LINEAR COMPRESSOR

专利摘要:
A linear compressor is provided. The linear compressor can include a casing with a cylindrical shape, a casing cover that covers both open ends of the casing, a cylinder accommodated in the casing and defining a compression space for a refrigerant, a piston that reciprocates within the cylinder in an axial direction to compress the coolant within the compression space, an engine assembly that includes an engine that powers the piston and a stator cover that supports the engine, and resonant springs accommodated in the stator cover that support the piston to allow the piston to resonate. The resonant springs can be arranged in a circular way at three points with the same interval around a center in an axial direction.
公开号:BR102017008102A2
申请号:R102017008102-8
申请日:2017-04-19
公开日:2020-06-23
发明作者:Junghae Kim；Hyunsoo Kim；Jeonguk BYUN；Jongwoo LEE；Eonpyo HONG
申请人:Lg Electronics Inc；Lg Electronics Inc.；
IPC主号:

专利说明:

[0001] [0001] A linear compressor is disclosed in this document. Foundations
[0002] [0002] Cooling systems are systems in which a refrigerant circulates to generate cold air. In such a cooling system, refrigerant compression, condensation, expansion and evaporation processes are performed repeatedly. For this, the cooling system includes a compressor, a condenser, an expansion device and an evaporator. In addition, the cooling system can be installed in a refrigerator or air conditioner that is an appliance.
[0003] [0003] In general, compressors are machines that receive energy from a power generation device, such as an electric motor or a turbine, to compress air, a refrigerant, or various useful gases, thereby increasing the pressure. Compressors are being used widely in home appliances or industrial fields.
[0004] [0004] Compressors can be broadly classified into reciprocating compressors, in which a compression space, into / from which a useful gas is aspirated and discharged, is defined between a piston and a cylinder to allow the piston to be subjected to linear reciprocal movement into the cylinder, thereby compressing a refrigerant; rotary compressors, in which a compression space, into / from which a useful gas is aspirated or discharged, is defined between an eccentrically rotating roller and a cylinder to allow the roller to eccentrically rotate along an inner wall of the cylinder, thereby compressing a refrigerant; and scroll compressors, in which a compression space, into / from which a refrigerant is aspirated and discharged, is defined between an orbiting spiral and a fixed roller to compress a refrigerant while the orbiting spiral rotates along the fixed roller . In recent years, a linear compressor with a simple structure has been extensively developed, which is connected directly to a drive motor, in which a piston exerts a linear reciprocal movement to improve the compression efficiency without mechanical losses due to the conversion of movement.
[0005] [0005] In general, the linear compressor can aspirate and compress a refrigerant in a sealed enclosure while a piston exerts a linear reciprocal movement inside the cylinder by a linear motor and then discharges the refrigerant.
[0006] [0006] The linear motor is configured to allow a permanent magnet to be arranged between an internal stator and an external stator. The permanent magnet can exert linear reciprocal movement by an electromagnetic force between the permanent magnet and the internal (or external) stator. In addition, because the permanent magnet operates in the state in which the permanent magnet is connected to the piston, the permanent magnet can suck and compress the refrigerant, while exerting a linear reciprocal movement inside the cylinder, and then discharge the refrigerant.
[0007] [0007] A linear compressor with an enclosure shape with a height that is a little high in a vertical direction is disclosed in Korean Patent Registry No. 10-1307688, which is incorporated into this document by reference. The compressor can increase in size due to the shape of the enclosure and, therefore, a large internal space of a refrigerator or an air conditioner in which the compressor is provided may be necessary. More particularly in the refrigerator, machinery space can increase in size due to the compressor, causing a loss of storage space.
[0008] [0008] Thus, to reduce the size of the linear compressor, it may be necessary to reduce the size of a main part or component of the compressor. However, in this case, the compressor may lose performance.
[0009] [0009] To resolve the limitation described above, a linear compressor, in which a gas bearing easily operates between a cylinder and a piston to reduce the size of an internal part or component while maintaining compressor performance, is disclosed in Korean Patent Publication No. 10-2016-0000324, which is incorporated herein by reference.
[0010] [0010] According to the structure described above, although a spring is provided between a support and a rear cover to absorb a piston impact, a lateral force can be generated, as only a spring is provided in a center in an axial direction of the compressor. Thus, when the compressor operates, an equilibrium may not be maintained, generating vibration noise. BRIEF DESCRIPTION OF THE FIGURES
[0011] [0011] Modalities will be described in detail with reference to the following figures, in which the same reference numerals refer to the same elements and where:
[0012] [0012] Fig. 1 is a perspective view illustrating an external appearance of a linear compressor according to an embodiment;
[0013] [0013] Fig. 2 is an exploded perspective view illustrating a liner and liner cover of the linear compressor according to an embodiment;
[0014] [0014] Fig. 3 is an exploded perspective view illustrating internal parts or components of the linear compressor according to an embodiment;
[0015] [0015] Fig. 4 is a cross-sectional view taken along line IV-IV 'in Fig. 1;
[0016] [0016] Fig. 5 is a perspective view of a main body when viewed from the rear side;
[0017] [0017] Fig. 6 is a perspective view of the main body when seen from a front side;
[0018] [0018] Fig. 7 is an exploded perspective view illustrating a coupling structure for a discharge cover, a discharge valve, a gasket and a structural frame according to an embodiment;
[0019] [0019] Fig. 8 is a cross-sectional view illustrating a state in which the structural frame and the discharge cover are coupled to each other according to an embodiment;
[0020] [0020] Fig. 9 is an exploded perspective view illustrating the structural frame and a cylinder according to an embodiment;
[0021] [0021] Fig. 10 is a perspective view illustrating a state in which the structural frame and the cylinder are coupled to each other according to an embodiment;
[0022] [0022] Fig. 11 is a plan view showing a state in which the structural frame and the cylinder are coupled to each other according to an embodiment;
[0023] [0023] Fig. 12 is a cross-sectional view of a state in which the structural frame and the cylinder are coupled to each other according to a modality;
[0024] [0024] Fig. 13 is an exploded perspective view showing a piston and a suction valve according to an embodiment;
[0025] [0025] Fig. 14 is a left side view or first side view of the piston;
[0026] [0026] Fig. 15 is a cross-sectional view illustrating a state in which the piston is inserted into the cylinder according to a modality;
[0027] [0027] Fig. 16 is a perspective view of a stator cover according to an embodiment;
[0028] [0028] Fig. 17 is an exploded perspective view illustrating a support coupling structure and a resonant spring according to an embodiment;
[0029] [0029] Fig. 18 is a plan view of the support;
[0030] [0030] Fig. 19 is a plan view of a counterweight according to an embodiment;
[0031] [0031] Fig. 20 is an exploded perspective view of a rear cover and a first enclosure cover when viewed from a front side according to an embodiment;
[0032] [0032] Fig. 21 is an exploded perspective view of the rear cover, a first support device or support, and a first enclosure cover when viewed from a rear side;
[0033] [0033] Fig. 22 is a plan view of a first disc spring according to an embodiment;
[0034] [0034] Fig. 23 is an exploded perspective view of a discharge cover, a second support device or support, and a second enclosure cover when viewed from a front side according to an embodiment;
[0035] [0035] Fig. 24 is an exploded perspective view of the discharge cover, the second support device, and the second enclosure cover when viewed from a rear side;
[0036] [0036] Fig. 25 is a plan view of the second support device according to an embodiment;
[0037] [0037] Fig. 26 is a cross-sectional view illustrating an arrangement relationship of a process pipe and the second casing cover according to an embodiment;
[0038] [0038] Fig. 27 is a cut-away perspective view taken along line XXVII-XXVII 'in Fig. 1;
[0039] [0039] Fig. 28 is a cross-sectional view taken along line XXVIII-XXVIII 'in Fig. 1;
[0040] [0040] Fig. 29 is a cross-sectional view taken along line XXIX-XXIX 'in Fig. 1;
[0041] [0041] Fig. 30 is a cross-sectional view taken along line XXX-XXX 'in Fig. 1;
[0042] [0042] Fig. 31 is a cross-sectional view taken along line XXXI-XXXI 'in Fig. 1;
[0043] [0043] Fig. 32 is a cross-sectional view taken along line XXXII-XXXII 'in Fig. 1;
[0044] [0044] Fig. 33 is a cross-sectional view taken along line XXXIII-XXXIII 'in Fig. 1;
[0045] [0045] Fig. 34 is a cross-sectional view taken along line XXXIV-XXXIV 'in Fig. 1;
[0046] [0046] Fig. 35 is a cross-sectional view taken along line XXXV-XXXV 'in Fig. 1;
[0047] [0047] Fig. 36 is a cross-sectional view taken along line XXXVI-XXXVI 'in Fig. 1;
[0048] [0048] Fig. 37 is a cross-sectional view taken along line XXXVIl-XXXVII 'of Fig. 1; and
[0049] [0049] Fig. 38 is a cross-sectional view illustrating a state in which a refrigerant flows into the compressor according to a modality. DETAILED DESCRIPTION
[0050] [0050] From now on, exemplary modalities will be described in detail with reference to the attached figures. The modalities can, however, be incorporated in many different ways and should not be interpreted as being limited to the modalities set out in this document; instead, alternative modalities included in other previous inventions or that fall within the spirit and scope of the present disclosure will fully transmit the concept to those skilled in the art.
[0051] [0051] Fig. 1 is a perspective view illustrating an external appearance of a linear compressor according to a modality. Fig. 2 is an exploded perspective view showing a liner and liner cover of the linear compressor according to an embodiment.
[0052] [0052] With reference to Figs. 1 and 2, a linear compressor 10 according to an embodiment can include a housing 101 and housing covers 102 and 103 coupled to housing 101. Each of the first and second housing covers 102 and 103 can be understood as a component of enclosure 101.
[0053] [0053] A leg 50 can be attached to a lower portion of the housing 101. Leg 50 can be attached to a product base on which the linear compressor 10 is installed or provided. For example, the product may include a refrigerator and the base may include a refrigerator machinery space base. As another example, the product may include an outdoor unit for an air conditioner and the base may include an outdoor unit base.
[0054] [0054] Housing 101 may be approximately cylindrical in shape and be arranged to remain in a horizontal or an axial direction. In Fig. 1, the housing 101 can extend in the horizontal direction and be relatively low in a radial direction. That is, since the linear compressor 10 has a low height, when the linear compressor 10 is installed or provided at the base of the refrigerator's machinery space, a machinery space can be reduced in height.
[0055] [0055] A terminal 108 can be installed or provided on an external surface of the housing 101. Terminal 108 can be understood as a component to transmit external energy to a motor assembly (see reference numeral 140 of Fig. 3) of the compressor linear 10. Terminal 108 can be connected to a guide line of a coil (see reference numeral 141c in Fig. 3).
[0056] [0056] Angle 109 can be installed or provided outside terminal 108. Angle 109 can include a plurality of angles surrounding terminal 108. Angle 109 can protect terminal 108 from external impact.
[0057] [0057] Both sides of housing 101 can be opened. Housing covers 102 and 103 can be coupled to both open sides of housing 101. Housing covers 102 and 103 can include a first housing cover 102 coupled to an open side of housing 101 and a second housing cover 103 coupled to to the other open side of housing 101. An internal space of housing 101 can be sealed by housing covers 102 and 103.
[0058] [0058] In Fig. 1, the first housing cover 102 can be arranged on a first portion or right portion of the linear compressor 10, and the second housing cover 103 can be arranged on a second portion or left portion of the linear compressor 10 That is, the first and second enclosure covers 102 and 103 can be arranged to face each other.
[0059] [0059] The linear compressor 10 additionally includes a plurality of pipes 104, 105 and 106 provided in housing 101 or in housing covers 102 and 103 for aspirating, discharging, or injecting refrigerant. The plurality of pipes 104, 105 and 106 can include a suction pipe 104 through which the refrigerant can be sucked into the linear compressor 10, a discharge pipe 105 through which the compressed refrigerant can be discharged from the linear compressor 10 , and a process pipeline through which the refrigerant can be supplied to the linear compressor 10.
[0060] [0060] For example, the suction pipe 104 can be coupled to the first casing cover 102. The refrigerant can be sucked into the linear compressor 10 through the suction pipe 104 in an axial direction.
[0061] [0061] The discharge pipe 105 can be coupled to an external circumferential surface of the housing 101. The refrigerant sucked through the suction pipe 104 can flow in an axial direction and then be compressed. In addition, the compressed refrigerant can be discharged through the discharge line 105. The discharge line 105 can be arranged in a position that is adjacent to the second housing cover 103 instead of the first housing cover 102.
[0062] [0062] Process piping 106 can be coupled to the outer circumferential surface of housing 101. A worker can inject refrigerant into linear compressor 10 through process piping 106.
[0063] [0063] Process piping 106 can be coupled to housing 101 at a height other than a height of discharge piping 105 to avoid interference with discharge piping 105. Height can be understood as a distance from leg 50 in vertical direction (or in the radial direction). Since the discharge pipe 105 and the process pipe 106 are coupled to the outer circumferential surface of the housing 101 at different heights, a worker's convenience of work can be improved.
[0064] [0064] At least a portion of the second casing cover 103 may be disposed adjacent to an internal circumferential surface of the casing 101, which corresponds to a point to which the process tubing 106 can be coupled. That is, at least a portion of the second casing cover 103 can act as a flow resistance for the refrigerant injected through process piping 106.
[0065] [0065] Thus, in view of the passage of the refrigerant, the passage of the refrigerant introduced through the process piping 106 may have a size that gradually decreases towards the internal space of the housing 101. In this process, the refrigerant pressure can be reduced to allow the refrigerant to be vaporized. In addition, in this process, oil contained in the refrigerant can be separated. Thus, the refrigerant from which the oil is separated can be introduced into a piston 130 to improve the compression performance of the refrigerant. The oil can be understood as a useful oil existing in a cooling system.
[0066] [0066] A cover support part 102a is arranged on an internal surface of the first housing cover 102. A first support device 500, which will be described later, can be coupled to the cover support part 102a. The cover support part 102a and the first support device 500 can be understood as devices for supporting a main body of the linear compressor 10. Here, the main body of the compressor represents a part provided in the housing 101. For example, the main body it can include a drive part that reciprocates forward and backward movement and a support part that supports the drive part. The drive part can include parts such as piston 130, a magnetic structural frame 138, a permanent magnet 146, a support 400 and a suction silencer 150. In addition, the support part can include parts such as resonant springs 176a and 176b, a rear cover 170, a stator cover 300 and the first support device 500.
[0067] [0067] A plug 102b can be arranged or provided on an internal surface of the first housing cover 102. The plug 102b can be understood as a component that prevents the main body of the compressor, particularly the engine assembly 140, from colliding with the enclosure 101 and thus be damaged due to vibration or an impact occurred during transport of the linear compressor 10. The plug 102b may be arranged or provided adjacent to the rear cover 170, which will be described below. Thus, when the linear compressor 10 is shaken, the rear cover 170 may interfere with the plug 102b to prevent the impact from being transmitted to the motor assembly 140.
[0068] [0068] A spring coupling part or portion 101a may be arranged or provided on the inner surface of the housing 101. For example, the spring coupling part 101a may be arranged in a position that is adjacent to the second housing cover 103. The spring coupling part 101a can be coupled to a second support spring 610 of a second support device or support 600, which will be described below. Since the spring coupling part 101a and the second support device 600 are coupled together, the main body of the compressor can be supported stably within the housing 101.
[0069] [0069] Fig. 3 is an exploded perspective view illustrating internal components of the linear compressor according to a modality. Fig. 4 is a cross-sectional view illustrating internal components of the linear compressor according to an embodiment.
[0070] [0070] With reference to Figs. 3 and 4, the linear compressor 10 according to an embodiment can include a cylinder 120 provided in the housing 101, the piston 130, which exerts a linear reciprocal movement within the cylinder 120, and the motor assembly 140, which functions as a linear motor to apply actuation force to piston 130. When motor assembly 140 is actuated, piston 130 can exert linear reciprocal movement in the axial direction.
[0071] [0071] The linear compressor 10 can additionally include a suction silencer 150 coupled to piston 130 to reduce noise generated from the refrigerant sucked through the suction pipe 104. The refrigerant sucked through the suction pipe 104 can flow into the piston 130 through the suction silencer 150. For example, while the refrigerant passes through the suction silencer 140, the flow noise of the refrigerant can be reduced.
[0072] [0072] The suction muffler 150 can include a plurality of mufflers 151, 152 and 153. The plurality of mufflers 151, 152 and 153 can include a first muffler 151, a second muffler 152 and a third muffler 153, which can be coupled to each other.
[0073] [0073] The first muffler 151 can be arranged or provided within the piston 130, and the second muffler 152 can be coupled to a rear portion of the first muffler 151. In addition, the third muffler 153 can accommodate the second muffler 152 there and extend to a rear side of the first silencer 151. In view of the direction of flow of the refrigerant, the refrigerant sucked through the suction pipe 104 can pass successively through the third silencer 153, the second silencer 152 and the first silencer 151. In this process , the refrigerant flow noise can be reduced.
[0074] [0074] The suction silencer 150 can additionally include a silencer filter 155. The silencer filter 155 can be arranged on or on an interface on or on which the first silencer 151 and the second silencer 152 are coupled to each other. For example, the muffler filter 155 can be circular in shape, and an outer circumferential portion of the muffler filter 155 can be supported between the first and second mufflers 151 and 152.
[0075] [0075] The "axial direction" can be understood as a direction in which the piston 130 exercises a reciprocal movement, that is, a horizontal direction in Fig. 4. In addition, "in the axial direction", a direction from the suction 104 towards a compression space P, that is, a direction in which the refrigerant flows, can be defined as a "forward direction", and a direction opposite to the forward direction can be defined as a "backward direction" ". When piston 130 moves forward, the compression space P can be compressed. On the other hand, the "radial direction" can be understood as a direction that is perpendicular to the direction in which the piston 130 exercises reciprocal movement, that is, a vertical direction in Fig. 4.
[0076] [0076] The piston 130 may include a piston body 131 with an approximately cylindrical shape and a part of piston flange or flange 132 that extends from the piston body 131 in the radial direction. The piston body 131 can move reciprocally inside the cylinder 120, and the piston flange part 132 can move reciprocally outside the cylinder 120.
[0077] [0077] Cylinder 120 can be configured to accommodate at least a portion of the first muffler 151 and at least a portion of the piston body 131. The cylinder 120 may have the compression space P, in which the refrigerant can be compressed by the piston 130. In addition, a suction port 133, through which the refrigerant can be introduced into the compression space P, can be defined in a front portion of the piston body 131, and a suction valve 135 which selectively opens the suction port. suction 133 can be arranged or provided on a front side of suction port 133. A coupling port, to which a predetermined coupling member 135a can be coupled, can be defined in an approximately central portion of the suction valve 135.
[0078] [0078] A discharge cap 200, which defines a discharge space 160a for the refrigerant discharged from the compression space P, and a discharge valve assembly 161 and 163, coupled to the discharge cap 200 to selectively discharge the refrigerant compressed in the compression space P, can be provided on a front side of the compression space P. The discharge space 160a can include a plurality of parts of space or spaces, which can be partitioned by internal walls of the discharge cover 200. The plurality of parts of space can be arranged or provided in the forward and backward direction to communicate with each other.
[0079] [0079] The discharge valve assembly 161 and 163 can include a discharge valve 161, which can be opened when the pressure of the compression space P is above a discharge pressure to introduce refrigerant into the discharge space, and a spring assembly 163, arranged or provided between the discharge valve 161 and the discharge cover 200 to provide elastic force in the axial direction. The spring assembly 163 can include a valve spring 163a and a spring support or support part 163b that supports the valve spring 163a to the discharge cover 200. For example, the valve spring 163a can include a disc spring. The spring support part 163b can be integrally injection molded to the valve spring 163a through an injection molding process, for example.
[0080] [0080] The discharge valve 161 can be coupled to the valve spring 163a, and a rear portion or rear surface of the discharge valve 161 can be arranged to be supported on a front surface of the cylinder 120. When the discharge valve 161 is supported on the front surface of the cylinder 120, the compression space can be maintained in the sealed state. When the discharge valve 161 is spaced from the front surface of the cylinder 120, the compression space P can be opened to allow the refrigerant in the compression space P to be discharged.
[0081] [0081] The compression space P can be understood as a defined space between the suction valve 135 and the discharge valve 161. In addition, the suction valve 135 can be arranged on or on one side of the compression space P, and the discharge valve 161 can be arranged on or on the other side of the compression space P, that is, on an opposite side of the suction valve 135.
[0082] [0082] While the piston 130 exerts a linear reciprocal movement inside the cylinder 120, when the pressure of the compression space P is below the discharge pressure and a suction pressure, the suction valve 135 can be opened to suck the refrigerant to the compression space P. On the other hand, when the pressure of the compression space P is above the suction pressure, the suction valve 135 can compress the refrigerant of the compression space P in a state in which the suction valve 135 is closed .
[0083] [0083] When the pressure of the compression space P is above the discharge pressure, valve spring 163a can be deformed forward to open the discharge valve 161. Here, the refrigerant can be discharged from the compression space P into the discharge space of the discharge cover 200. When the refrigerant discharge is complete, valve spring 163a may provide restoring force to discharge valve 161 to close discharge valve 161.
[0084] [0084] The linear compressor 10 additionally includes a connection pipe 261 coupled to the discharge cap 200 to allow refrigerant to flow through the discharge space 160a of the discharge cap 200 to flow into the discharge cap 200. For example , the connecting pipe 261 can be made of a metallic material.
[0085] [0085] The linear compressor 10 can additionally include a loop pipe 262 coupled to one or the first side of the discharge cover 200 connected to the connection pipe 261 to transfer the refrigerant flowing through the connection pipe 261 to the connection pipe discharge 105. The loop pipe 262 may have one or a first side coupled to the connection pipe 261 and the other or a second side coupled to the discharge pipe 105.
[0086] [0086] The handle pipe 262 can be made of a flexible material and have a relatively long length. In addition, loop pipe 262 can extend in a circular fashion from connecting pipe 261 along the inner circumferential surface of housing 101 and be coupled to discharge pipe 105. For example, loop pipe 262 may have a curled shape.
[0087] [0087] The linear compressor 10 can additionally include a structural frame 110. The structural frame 110 is understood as a component that fixes the cylinder 120. For example, the cylinder 120 can be fitted by pressure in the structural frame 110. Each one of the cylinder 120 and structural frame 110 can be made of aluminum or an aluminum alloy material, for example.
[0088] [0088] The structural frame 110 can be arranged or provided to surround the cylinder 120. That is, the cylinder 120 can be arranged or provided to be housed in the structural frame 110. In addition, the discharge cover 200 can be coupled to a front surface of structural frame 110 using a coupling member.
[0089] [0089] Motor assembly 140 may include an external stator 141 attached to structural frame 110 and arranged or provided to surround cylinder 120, an internal stator 148 arranged or provided to be spaced inwardly from external stator 141, and the 146 permanent magnet 146 arranged or provided in a space between external stator 141 and internal stator 148.
[0090] [0090] The permanent magnet 146 can be subjected to linear reciprocal movement by mutual electromagnetic force between the external stator 141 and the internal stator 148. In addition, the permanent magnet 146 can be provided as a single magnet with a polarity, or by means of coupling a plurality of magnets with three polarities to each other.
[0091] [0091] The magnetic structural frame 138 can be installed or provided over the permanent magnet 146. The magnetic structural frame 138 can have an approximately cylindrical shape and be arranged or provided to be inserted in the space between the external stator 141 and the internal stator 148 .
[0092] [0092] With reference to the cross-sectional view of Fig. 4, the magnetic structural frame 138 can be coupled to the piston flange part 132 to extend in an external radial direction and then be folded forward. The permanent magnet 146 can be installed or provided on a front portion of the magnetic structural frame 138. When the permanent magnet 146 exerts reciprocal movement, the piston 130 can exert reciprocal movement together with the permanent magnet 146 in the axial direction.
[0093] [0093] The external stator 141 may include coil winding bodies 141b, 141c and 141d and a stator core 141a. Coil winding bodies 141b, 141c, and 141 d may include a coil 141b and a coil 141c wound in a circumferential direction of coil 141b. Coil winding bodies 141b, 141c, and 141 d may additionally include a terminal part or portion 141 d that guides a power line connected to coil 141c so that the power line is led out or exposed to the outside of the stator external 141. The terminal part 141d can be arranged or provided to be inserted into a terminal insertion part or portion (see reference numeral 119c of Fig. 9).
[0094] [0094] Stator core 141a may include a plurality of core blocks in which a plurality of laminations are laminated in a circumferential direction. The plurality of core blocks may be arranged or provided to surround at least a portion of the coil winding bodies 141b and 141c.
[0095] [0095] A stator cover 300 can be arranged or provided on one or a first side of the external stator 141. That is, the external stator 141 can have one or a first side supported by the structural frame 110 and the other or a second side supported by the stator cover 300.
[0096] [0096] The linear compressor 10 can additionally include a cover coupling member 149a for coupling the stator cover 300 to structural frame 110. The cover coupling member 149a can pass through the stator cover 300 to extend forward to the structural frame 110 and then be coupled to a first coupling hole (see reference numeral 119a in Fig. 9) of the structural frame 110.
[0097] [0097] The internal stator 148 can be fixed to a circumference of the structural frame 110. In addition, in the internal stator 148, the plurality of laminations can be laminated in the circumferential direction outside the structural frame 110.
[0098] [0098] The linear compressor 10 can additionally include a support 400 that supports the piston 130. The support 400 can be coupled to a rear portion of the piston 130, and the silencer 150 can be arranged or provided to pass through the interior of the support 400 The piston flange part 132, the magnetic structural frame 138 and the support 400 can be coupled to each other using a coupling member.
[0099] [0099] A counterweight 179 can be attached to support 400. A weight of counterweight 179 can be determined based on a frequency range of activation of the compressor body.
[0100] [00100] The linear compressor 10 can additionally include a rear cover 170 coupled to the stator cover 300 to extend backwards and supported by the first support device 500. The rear cover 170 can include three support legs, and the three support legs. support can be coupled to a rear surface of the stator cover 300. A spacer 181 can be arranged or provided between the three support legs and the rear surface of the stator cover 300. A distance from the stator cover 300 to an end The rear cover 170 can be determined by adjusting the thickness of the spacer 181. In addition, the rear cover 170 can be spring supported by the support 400.
[0101] [00101] The linear compressor 10 can additionally include an inflow guide part or guide 156 coupled to the rear cover 170 to guide an inflow of the refrigerant into the suction 150. At least a portion of the inflow guide part 156 can be inserted on the suction silencer 150.
[0102] [00102] The linear compressor 10 can additionally include a plurality of resonant springs 176a and 176b that can be adjusted in natural frequency to allow piston 130 to perform a resonant movement.
[0103] [00103] The plurality of resonant springs 176a and 176b can include a first resonant spring 176a supported between the support 400 and the stator cover 300 and a second resonant spring 176b supported between the first resonant spring 176a and the back cover 170. The part actuator that exerts reciprocal movement within the linear compressor 10 can be moved steadily by the action of the plurality of resonant springs 176a and 176b to reduce vibration or noise due to the movement of the actuation part. Support 400 may include a spring support part or support 440 coupled to the first resonant spring 176a.
[0104] [00104] The linear compressor 10 may include structural frame 110 and a plurality of sealing members or seals 127, 128, 129a and 129b which increase a coupling force between the peripheral parts or components around structural frame 110. The plurality of sealing members 127, 128, 129a and 129b includes a first sealing or sealing member 127 arranged or provided in a portion in which the structural frame 110 and the discharge cover 200 are coupled together. The first sealing member 127 can be arranged or provided in a second installation groove (see reference numeral 116b of Fig. 9) of the structural frame 110.
[0105] [00105] The plurality of sealing members 128, 128, 129a and 129b may additionally include a second sealing member or seal 128 arranged or provided in a portion in which the structural frame 110 and cylinder 120 are coupled to each other. The second sealing member 128 can be arranged or provided in a first installation groove (see reference numeral 116a of Fig. 9) of structural frame 110.
[0106] [00106] The plurality of sealing members 127, 128, 129a and 129b may additionally include a third sealing or sealing member 129 arranged or provided between cylinder 120 and structural frame 110. The third sealing member 129a can be arranged or provided in a cylinder groove (see reference numeral 121e of Fig. 12) defined in the rear portion of cylinder 120. The third sealing member 129a can prevent the refrigerant inside a gas pocket (see reference numeral 110b of Fig 13), arranged or provided between an inner circumferential surface of structural frame 110 and an outer circumferential surface of cylinder 120, flows outwardly to increase a coupling force between structural frame 110 and cylinder 120.
[0107] [00107] The plurality of sealing members 127, 128, 129a and 129b may additionally include a fourth sealing or sealing member 129b arranged or provided in a portion in which the structural frame 110 and the internal stator 148 are coupled to each other. The fourth sealing member 129b can be arranged or provided in a third installation groove (see reference numeral 111a of Fig. 10) of structural frame 110. Each of the first to the fourth sealing members 127, 128, 129a and 129b it may have a ring shape.
[0108] [00108] The linear compressor 10 can additionally include the second support device 600 coupled to the discharge cover 200 to support one or a first side of the main body of the compressor 10. The second support device 600 can be arranged or provided adjacent to the second housing cover 103 to resiliently support the main body of the compressor 10. The second support device 600 can include a second support spring 610. The second support spring 610 can be coupled to the spring coupling part 101a.
[0109] [00109] The linear compressor 10 can additionally include the first support device 500 coupled to the rear cover 170 to support the other or a second side of the main body of the compressor 10. The first support device 500 can be coupled to the first housing cover 102 to elastically support the main body of the compressor 10. The first support device 500 may include a first disc spring 510. The first disc spring 510 can be coupled to the cover support part 102a.
[0110] [00110] Hereinafter, a coupled state of the main body will be described.
[0111] [00111] Fig. 5 is a perspective view of the main body when viewed from a rear side. Fig. 6 is a perspective view of the main body when viewed from the front.
[0112] [00112] As illustrated in the figures, the first support device 500 can be fixed and mounted on the rear cover 170 by a rear cover coupling member 176. The rear cover coupling members 176 can be arranged circularly in one angle of about 120 ° around the axial direction of the compressor. That is, three rear cover coupling members 176 can be provided, and the three rear cover coupling members 176 can be arranged circularly in the same interval.
[0113] [00113] The rear cover coupling member 176 can be coupled to a cover body 171 of the rear cover 170 in a position corresponding to an intermediate point between the coupling legs 174. Thus, the rear cover coupling member 176 can provide a stable coupling structure and also uniformly disperse a load transmitted through the rear cover coupling member 176 to the second support device 600 and the rear cover 170.
[0114] [00114] Three coupling legs 174 extending from the cover body 171 of the rear cover 170 in a discharge direction can be provided and arranged in a circular fashion at an angle of about 120 ° around a center of the direction axial of the compressor 10. A cover side accommodation part or accommodation 177 that extends outwardly from the cover body 171 can be arranged or provided between coupling legs 174 adjacent to each other.
[0115] [00115] The cover side accommodation part 177 can be arranged or provided in a space between the rear cover coupling members 176. The second resonant spring 176b accommodated in the cover side accommodation part 177 can be supported stable. As a result, three cover side accommodation parts 177 can also be provided and arranged in a circular fashion at an angle of about 120 ° around a center of the axial direction or central longitudinal axis of the compressor 10. Thus, the Whole coupling can be distributed in the same interval to prevent stress from being concentrated when coupled, as well as coinciding with a structural balance. In addition, a charge transmitted by the second resonant spring 176b can be dispersed evenly.
[0116] [00116] As described above, the rear cover coupling member 176 and the second resonant spring 176b can be successively arranged or provided in a circumference of the cover body 171 in a rotational direction around the center of the axial direction of the compressor 10. Thus, the load applied to the cover body 171 in opposite directions can be dispersed evenly across an entire surface of the cover body 171 in a uniform position.
[0117] [00117] The rear cover 170 can be coupled to the stator cover 300 by the rear cover coupling member 176. The rear cover coupling member 176 can be coupled to a leg coupling part 175 arranged or provided at one end of coupling leg extension 174. Thus, the rear cover coupling members 176 can be provided and arranged in a circular fashion at an angle of about 120 ° around the center of the axial direction of the compressor 10.
[0118] [00118] Resonant springs 176a and 176b can be arranged in a circular fashion between the plurality of coupling legs 174. Two resonant springs 176a and 176b can be arranged or provided between two coupling legs 174. Thus, six pairs of resonant springs 176a and 176b can be provided between the cover body 171 and the stator cover 300 to effectively reduce a lateral force while maintaining adequate stiffness for a piston resonance 130.
[0119] [00119] Resonant springs 176a and 176b can be arranged circularly between the rear cover coupling members 176 on a surface of the stator cover 300, to which the rear cover coupling members 176 can be coupled, to maintain a weight and balance in general format. Thus, a uniform load can be transmitted to an entire circumference of the stator cover 300 to maintain a balance of the stator cover 300.
[0120] [00120] The support 400 between the cover body 171 and the stator cover 300 can support the first and second resonant springs 176a and 176b in both directions. The spring support parts 440 can also be arranged circularly at an angle of about 120 ° around the axial direction of the compressor. Thus, the load applied to support 400 can be dispersed evenly and, thus, the plurality of resonant springs 176a and 176b can be maintained to be balanced.
[0121] [00121] Thus, since the plurality of resonant springs 176a and 176b are arranged in a circular manner along a circumference of the support 400, a lateral force that acts in the radial direction when the compressor 10 is activated can be effectively reduced. In addition, a number of resonant springs 176a and 176b connected to the support 400 can increase to provide adequate stiffness, while reducing a length of each of the resonant springs 176a and 176b. In addition, a pair of resonant springs 176a and 176b can be arranged in a circular fashion at the same angle to steadily support the support 400, which can be vibrated at a high speed.
[0122] [00122] The motor assembly 140 can be arranged or provided between the stator cover 300 and the structural frame 110, and the external stators 141 of the motor assembly 140 can be arranged in a circular manner between the stator cover 300 and the frame structural 110.
[0123] [00123] The cover coupling member 149a can be mounted on the stator cover 300 and the structural frame 110 to secure the motor assembly 140. Three cover coupling members 149a can be provided and arranged in a circular shape at an angle of about 120 ° around the center of the axial direction of the compressor 10. Both ends of the cover coupling member 149a and can be fixed respectively to the stator cover 300 and the structural frame 110 and arranged to pass between the external stators 141 .
[0124] [00124] The cover coupling member 149a can be arranged or provided at an intermediate point between the rear cover coupling members 176. The rear cover coupling member 176 and the cover coupling member 149a can be arranged circulate around the center of the axial direction of the compressor 10 and also arranged successively to alternate with each other. Thus, a load applied to the cover coupling member 149a can also be dispersed evenly over an entire surface of the cover coupling member 149a.
[0125] [00125] The discharge cover 200 can be mounted on or on the discharge side of structural frame 110. The discharge cover 200 can be attached to and mounted on structural frame 110 by a discharge cover coupling member 219b. The discharge cover coupling member 219b can pass through the discharge cover 200 from the outside of the discharge cover 200 and then be coupled to structural frame 110. Thus, three discharge cover coupling members 219b can be arranged in accordance with circular shape at an angle of about 120 ° around the center of the axial direction of the compressor 10. The discharge cover coupling member 219b can be arranged or provided between the cover coupling members 149a.
[0126] [00126] The discharge cover coupling member 219b may not be arranged in a center between the cover coupling members 149a, but be arranged or provided in a position which is angled to one side between the cover coupling members 149a due to an arrangement of the end part 141 of an arranged structure of the connecting pipe 261 and the loop pipe 262.
[0127] [00127] However, each discharge cover coupling member 219b may be arranged to be spaced at the same distance from the corresponding cover coupling member 149a, and in addition, discharge cover coupling members 219b may be arranged to be spaced the same distance from each other. Thus, a load applied to structural frame 110 can be dispersed evenly.
[0128] [00128] As described above, the adjacent components in the coupling structure between the discharge cover 200, the structural frame 110, the stator cover 300, the rear cover 170 and the first support device 500, which are arranged successively in the axial direction, can be coupled in positions that are arranged in a circular shape at a predetermined angle, but not arranged in the same extension line, to transmit a load applied to the axial direction in a state in which the load is evenly dispersed. Thus, the coupling structure between the discharge cover 200, the structural frame 110, the stator cover 300, the rear cover 170 and the second support device 600, which are separate from each other, can be maintained in a stable manner , and the charge can be dispersed evenly to adjacent components to maintain overall balance.
[0129] [00129] More particularly, the cover coupling member 149a and the resonant springs 176a and 176b can be arranged or provided in the same extension line. Thus, the structural frame 110 and the stator cover 300 can be fixed on the same first extension line L1.
[0130] [00130] In addition, a first spring coupling member 540 and the rear cover coupling member 176 may be arranged or provided in the same extension line. Thus, the stator cover 300, the rear cover 170 and the first support device 500 can be fixed on the same second extension line L2.
[0131] [00131] The first extension line L1 and the second extension line L2 can rotate at an angle of about 60 ° in the rotational direction. Thus, the coupling structures can be provided to be arranged circularly at an angle of about 60 ° over an angle of about 360 ° to prevent the load from being concentrated on either side inside the compressor 10, maintaining thus, the balance in general.
[0132] [00132] Furthermore, as the adjacent components do not overlap or interfere with each other due to the coupling structure, it may be unnecessary to provide a separate structure to avoid interference between them. Thus, each component can be compact and also easier during assembly work.
[0133] [00133] Thus, if there is no maintenance of the general balance of the main body and interference between the coupling structures, the angles arranged in a circular shape of the components may be adjustable in a state in which each of the components is coupled or supported in the three points.
[0134] [00134] From now on, the main body will be described.
[0135] [00135] Fig. 7 is an exploded perspective view illustrating a coupling structure of the discharge cover, the discharge valve, the gasket and the structural frame according to an embodiment. Fig. 8 is a cross-sectional view illustrating a state in which the structural frame and the discharge cover are coupled to each other according to an embodiment.
[0136] [00136] As illustrated in the figures, the linear compressor 10 according to an embodiment can include a discharge valve assembly 161 and 163 and the discharge cover 200 coupled to the discharge valve assembly 161 and 163 to define a discharge space for the refrigerant discharged from the compression space P of the cylinder 120. For example, the discharge valve assembly 161 and 163 can be press fit and coupled to the discharge cover 200.
[0137] [00137] A first gasket 270 can be arranged or provided between the discharge valve assembly 161 and 163 and the discharge cover 200, and a second gasket 280 can be arranged or provided between the discharge cover 200 and the structural frame 110 to reduce noise and vibration, which occurs in the discharge cover 200.
[0138] [00138] The discharge valve assembly 161 and 163 may include the discharge valve 161 installed or provided on or at a front end of the cylinder 120 to selectively open the compression space P and the spring assembly 163 coupled to a front side of the discharge valve 161. When the discharge valve 161 is attached close to the front end of the cylinder 161, the compression space P can be closed. When the discharge valve 161 moves forward and is then spaced from the cylinder 161, the refrigerant compressed in the compression space P can be discharged.
[0139] [00139] Spring assembly 163 may include valve spring 163a coupled to discharge valve 161. For example, valve spring 163a may include a disc spring with a plurality of cut grooves. A coupling port, to which the discharge valve 161 can be attached, can be defined in an approximately central portion of the valve spring 163a.
[0140] [00140] Spring assembly 163 may include spring support part 163b coupled to valve spring 163a. The spring support part 163b can be understood as a component coupled to the discharge cover 200 to support the valve spring 163a to the discharge cover 200. For example, the spring support part 163b can be snap-fit and coupled to the discharge cover 200. In addition, the spring support part 163b can be integrally injection molded to valve spring 163a through an injection molding process, for example.
[0141] [00141] Due to the injection molding of the spring support part 163b, the spring assembly 163 can steadily support the discharge valve 161 within the discharge cover 200 under a high temperature environment of about 150 ° C . In addition, a structure can be provided in which the spring assembly 163 is snap-fitted and secured within the discharge cover 200 to prevent the spring assembly 163 from moving.
[0142] [00142] The discharge cover 200 may additionally include the first gasket 270 installed or provided on the front side of the spring assembly 163. The first gasket 270 may allow the spring assembly 163 to be affixed close to the discharge cover 200 and prevent refrigerant from leaking through a space between spring assembly 163 and discharge cap 200.
[0143] [00143] The spring support part 163b may include a first protrusion 163c that prevents the discharge valve 161 and spring assembly 163 from rotating. A plurality of first protrusions 163c can be provided on an outer circumferential surface of the spring support part 163b.
[0144] [00144] For example, three first protrusions 163c may be arranged or provided in the same interval along a circumference of the spring support part 163b. That is, the first protrusions 163c can be arranged in a circular fashion at an angle of about 120 ° around the center of the spring assembly 163. Thus, the spring assembly 163 can be maintained in balance of a general weight and structure to prevent local inclination and vibration from occurring.
[0145] [00145] A plurality of second protrusions 271 projecting outwardly can be arranged or provided in the first gasket 270. Three second protrusions 271 can be arranged or provided in the same interval along a circumference of the first gasket 270. The second protrusion 271 can be arranged or provided in the same position as the first protrusion 163c. Thus, the first gasket 270 can also be kept in balance of the weight and structure in general to prevent local inclination and vibration from occurring.
[0146] [00146] The discharge cover 200 may additionally include a recess or recess part 217 coupled to an outer circumferential surface of the spring assembly 163 or an outer circumferential surface of the gasket 270. Each of the first protrusion 163c and the second protrusion 271 it can be housed in the recess part 217. The recess part 217 can be defined in the first cover 210 and a plurality of the recess parts 217 can be to correspond to the plurality of protrusions 163c and 271.
[0147] [00147] A method of coupling the spring assembly 163 to the discharge cover 200 will be described below. The first gasket 270 can be accommodated in a third part or portion 213 of the discharge cover 200. The second protrusion 217 of the first gasket 270 can be inserted into the recess part 217.
[0148] [00148] Spring assembly 163 can be snapped onto discharge cover 200. When the first gasket 270 is pressed, a front surface of spring assembly 163 can be attached to third part 213, and the first protrusion 163c can be arranged or provided in the recessed part 217.
[0149] [00149] As the spring assembly 163 is press-fitted to the discharge cover 200, the spring assembly 163 and the discharge valve 161 can be supported stably on or by the discharge cover 200. In addition, as the first and the second protrusions 163c and 271 are coupled to the recess parts 217, rotation of the spring assembly 163 and the discharge valve 161 can be prevented. As the recess parts 217 and protrusions 163c and 271 are coupled to each other, the spring assembly 163 and the first gasket 270 may not rotate, but must be kept to be fixed and mounted within the discharge cover 200. Thus, a vibration and spacing due to rotation can be prevented.
[0150] The discharge cover 200 may include a plurality of covers 210, 230 and 250 that define a plurality of discharge spaces or a plurality of discharge chambers. The plurality of covers 210, 230 and 250 can be attached to the structural frame 110 and stacked forward in relation to the structural frame 110.
[0151] The discharge cover 200 may include a first cover 210 that defines a first part of space or space 210a in which the discharge valve 161 and spring assembly 163 can be arranged. The first cover 210 can be moved forward.
[0152] [00152] The first cover 210 may include a first part or portion 211 that defines a rear surface of the first cover 210 and provides a coupling surface, to which the structural frame 110 can be attached, and a displaced part or step 215a that extends forward from the first part 211. The first cover 210 may have a shape that is lowered forward from the first part 211 by the first displaced part 215a.
[0153] [00153] The first cover 210 may include a second part or portion 212 which extends in a first predetermined length inwardly from the first part displaced 215a in the radial direction. The first cover 210 may additionally include a second displaced part or step 215b that extends forward from the second part 212. The first cover 210 may have a shape that is lowered forward from the second part 212 by the second part displaced 215b. The recessed part 217 can be defined on an outer circumferential surface of the displaced second part 215b.
[0154] [00154] The first cover 210 may include a third part or portion 213 which extends a second predetermined length inwardly from the second part displaced 215b in the radial direction. The third part 213 may have an accommodation surface on which the spring assembly 163 is accommodated.
[0155] [00155] The first gasket 270 can be arranged on the third part 213, and the spring assembly 163 can be attached to a rear side of the third part 213. Thus, the third part 213 can be attached to a front surface of the spring assembly 163. In addition, the outer circumferential surface of the spring assembly 163 can be snapped into the displaced second part 215b.
[0156] [00156] The first cover 210 may additionally include a displaced third part or step 215c that extends forward from the third part 213. The first cover 210 may have a shape that is lowered forward from the third part 213 by the displaced third part 215c. The first cover 210 may also include a fourth part or portion 214 that extends inwardly from the displaced third part 215 in the radial direction.
[0157] [00157] A plug 218 projecting backwards can be arranged in an approximately central portion of the fourth part 214. When the linear compressor 10 operates abnormally, particularly when an open degree of the discharge valve 161 is greater than a level predefined or predetermined, plug 218 may protect the discharge valve 161 or valve spring 163a.
[0158] [00158] The abnormal operation can be understood as a momentary abnormal behavior of the discharge valve 161 due to a change in the flow rate or pressure inside the compressor. The plug 218 can interfere with the discharge valve 161 or the valve spring 163a to prevent the discharge valve 161 or valve spring 163a from moving further forward.
[0159] [00159] Discharge holes 216a and 216b, through which the refrigerant flowing through the first part of space 200a can be transferred to the second cover 230, can be defined in the first cover 200. The discharge holes 216a and 216b can include a first discharge port 216a defined in the second part 212. A plurality of the first discharge port 216a can be provided, and the plurality of first discharge ports 216a can be arranged or provided to be spaced from each other along a circumference of the second part 212.
[0160] [00160] Once the discharge valve 161 is opened, the refrigerant, which does not pass through the spring assembly 163, of the refrigerant flowing to the first part of space 210a, that is, the refrigerant existing on one side at the upstream of the spring assembly 163, can be discharged out of the first cover 210 through the first discharge port 216a. In addition, the refrigerant discharged through the first discharge port 216a can be introduced into the second space part 230a of the second cover 230.
[0161] [00161] The discharge holes 216a and 216b can include a second discharge hole 216b defined in the fourth part 214. A plurality of the second discharge hole 216b can be provided, and the plurality of second discharge holes 216b can be arranged or provided to be spaced from each other along a circumference of the fourth part 214.
[0162] [00162] When the discharge valve 161 is opened, the refrigerant, which passes through the spring assembly 163, of the refrigerant flowing to the first part of space 210a, that is, the refrigerant existing on one side downstream of the assembly spring 163, can be discharged from the first cover 210 through the second discharge port 216b. In addition, the refrigerant discharged through the second discharge port 216b can be introduced into the second space part 230a of the second cover 230.
[0163] [00163] A number of second discharge holes 216b may be less than a number of first discharge holes 216a. Thus, in the refrigerant passing through the discharge valve 161, a relatively large amount of refrigerant can pass through the first discharge ports 216a, and a relatively small amount of refrigerant can pass through the second discharge ports 216b.
[0164] [00164] A volume ratio of the first to the third parts of space 210a, 230a and 250a can be determined as a predefined or predetermined ratio. The second part of space 230a can have a volume greater than that of the first part of space 210a, and the third part of space 250a can have a volume less than the volume of the second part of space 230a. Thus, the refrigerant can flow from the first part of space 210a to the second part of space 230a with relatively large volume to reduce pulsation and noise. In addition, the refrigerant can flow from the second part of space 230a to the third part of space 250a with relatively small volume to ensure a flow rate of the refrigerant.
[0165] [00165] The discharge cover 200 can additionally include the connection pipe 260 through which the refrigerant within the second part of space 230a can be transferred to the third space part 250a of the third cover 250. The connection pipe 260 can be attached to the second cover 230 to extend outside the second cover 230 and then be folded at least once and attached to the third cover 250.
[0166] [00166] Once the connection pipe 260 extending to the outside of the second cover 230 and coupled to the external surface of the third cover 250 is provided, the discharge passage for the refrigerant can be lengthened and, thus, the pulse of the refrigerant can be reduced. The refrigerant flowing through the connecting pipe 260 can flow through the loop pipe 262 and then be discharged outside the linear compressor 10 through the discharge pipe 105 connected to the loop pipe 262.
[0167] [00167] A discharge cover coupling hole 219a, through which a coupling member 219b that couples the discharge cover 200 to structural frame 110, can be defined in the discharge cover 200. Three cover coupling holes discharge 219a can be defined at a predetermined interval along the outer circumference of the discharge cover 200. That is, the three coupling members 219b can be arranged circularly at an angle of about 120 ° around the center of the cover discharge cover 200. Thus, discharge cover 200 can be stably coupled to structural frame 110.
[0168] [00168] A cover flange 219, onto which one side of the discharge cover 200 projects, can be arranged or provided on or on one side of the discharge cover 200 and one of the discharge cover coupling holes 219a can be defined in the cover flange 219. The cover flange 219 can extend a predetermined length so that one of the three discharge cover coupling holes 219a defined in the same range is defined in the discharge cover 200 with the asymmetrical shape.
[0169] [00169] A cover recess part or recess 211a, which is recessed inward, can be defined on one side of the cover flange 219. The cover recess part 211a can be defined in a position corresponding to an insertion part terminal 119c, which will be described below, and be lowered to a shape corresponding to a shape of at least a portion of an outer circumference of the terminal insertion part 119c. Thus, since the terminal insertion part 119c is exposed through the cover recess part 211a in a state in which the discharge cover 200 is coupled to the front surface of the structural frame 110, a terminal connected to an electrical wire can pass through the cover recess part 211a and the terminal insertion part 119c.
[0170] [00170] The second gasket 280 can be arranged or provided between the discharge cover 200 and the structural frame 110. The second gasket 280 can contact or contact each one between the rear surface of the discharge cover 200 and the front surface structural frame 110 to prevent vibration from the discharge cover 200 from being transmitted to structural frame 110. That is, since the second gasket 280 may be arranged or provided in the vibration transmission path of the discharge cover 200, in which vibration necessarily occurs, for structural frame 110, vibration transmission can be prevented and, thus, the occurrence of noise due to vibration transmission can be prevented.
[0171] [00171] Structural frame 110 may include a structural frame body 111 that extends in the axial direction and a structural frame flange 112 that extends outwardly from structural frame body 111 in the radial direction. The structural frame body 111 has a space which is cylindrical in shape with a central axis in the axial direction and in which the cylinder is housed.
[0172] [00172] Fig. 9 is an exploded perspective view illustrating the structural frame and the cylinder according to an embodiment. Fig. 10 is a perspective view illustrating a state in which the structural frame and the cylinder are coupled to each other according to an embodiment. Fig. 11 is a plan view showing a state in which the structural frame and the cylinder are coupled to each other according to an embodiment. Fig. 12 is a cross-sectional view of a state in which the structural frame and the cylinder are coupled to each other according to an embodiment.
[0173] [00173] As illustrated in the figures, cylinder 120 according to one embodiment can be coupled to structural frame 110. For example, cylinder 120 can be inserted into structural frame 110.
[0174] [00174] Structural frame 110 may include a structural frame body 111 that extends in the axial direction and a structural frame flange 112 that extends outwardly from structural frame body 111 in the radial direction. The structural frame body 111 may include a cylindrical shaped main body housing space with a central axis in the axial direction and accommodating the cylinder body 121 there. A third installation groove 111a, into which a fourth sealing member or seal 129b can be inserted between the structural frame body 111 and the internal stator 148, can be defined in a rear portion of the structural frame body 111.
[0175] [00175] The structural frame flange 112 may include a first wall 115a with a ring shape and coupled to the cylinder flange 122, a second wall 115b with a ring shape and arranged to surround the first wall 115a, and a third wall 115c connecting a rear end of the first wall 115a to a rear end of the second wall 115b. Each of the first wall 115a and the second wall 115b can extend in the axial direction, and the third wall 115c can extend in the radial direction.
[0176] [00176] Thus, a part of structural frame space or space 115d can be defined by the first to third walls 115a, 115b and 115c. The structural frame space portion 115d can be lowered backwards from a front end of the structural frame flange 112 to form a portion of the discharge passage through which the refrigerant discharged through the discharge valve 161 can flow.
[0177] [00177] A second installation groove 116b, defined at a front end of the second wall 115b and in which the first sealing member 127 can be installed, can be defined on the structural frame flange 112. A flange housing part 111b, into which at least a portion of the cylinder 120, for example, the cylinder flange 122 can be inserted, can be defined in an internal space of the first wall 115a. For example, the flange housing portion 111b may have an internal diameter equal to or less than an external diameter of the cylinder flange 122.
[0178] [00178] When cylinder 120 is snap-fitted to structural frame 110, cylinder flange 122 may interfere with first wall 115a. In this process, the cylinder flange 122 can be deformed.
[0179] [00179] The structural frame flange 112 may additionally include a sealing member accommodation portion or accommodation 116 that extends inwardly from a rear end of the first wall 115a in the radial direction. A first installation groove 116, into which the second sealing member 128 can be inserted, can be defined in the sealing member accommodation part 116. The first installation groove 116 can be lowered backwards from the accommodation part of sealing member 116.
[0180] [00180] The structural frame flange 112 can include coupling holes 119a and 119b for coupling structural frame 110, the discharge cover coupling member 219b and the cover coupling member 149a to each other. A plurality of coupling holes 119a and 119b can be provided along an outer circumference of the second wall 115b.
[0181] [00181] Coupling holes 119a and 119b can include a first coupling hole 119a to which the cover coupling member 149a can be coupled. First three coupling holes 119a can be defined in positions corresponding to the three cover coupling members 149a, so that the first three coupling holes 119a can be coupled respectively to the three cover coupling members 149a. In addition, the first coupling holes 119a can be arranged circularly at the same angle, that is, an angle of about 120 ° around the center of the axial direction of the compressor 10. That is, the first coupling holes 119a can be arranged at the same interval along the circumference of the structural frame flange 112.
[0182] [00182] Coupling holes 119a and 119b can additionally include a second coupling hole 119b, to which a predetermined coupling member can be coupled to couple the discharge cover 200 to structural frame 110. Three second coupling holes 119b can be defined in positions corresponding to the three discharge cover coupling members 219b, so that the three second coupling holes 119a are coupled respectively to the three discharge cover coupling members 219b. In addition, the second coupling holes 119b can be arranged circularly at the same angle, that is, an angle of about 120 ° around the center of the axial direction of the compressor 10. That is, the second coupling holes 119b can be arranged at the same interval along the circumference of the structural frame flange 112.
[0183] [00183] A portion in which the first and second coupling holes 119a and 119b are defined can be displaced on the front surface of the structural frame flange 112. That is, a protrusion that is projected to be displaced in a shape corresponding to a cross-sectional shape of the stator core 141a may be arranged or provided in a portion in which the second coupling orifice 119b is defined. The portion in which the second coupling orifice 119b is defined may protrude further than the portion in which the first coupling orifice 119a is defined. Thus, when the compressor 10 is activated, air can flow through the portion, in which the first coupling orifice 119a is defined, to prevent a loss from occurring due to air resistance.
[0184] [00184] The structural frame flange 112 may include the end insertion part 119c which provides an exit path from an end part or portion 141d of the motor assembly 140. The end part 141d can extend forward from the coil 141c and be inserted into the terminal insertion part 119c. Thus, the terminal part 141d can extend from the motor assembly 140 and the structural frame 110 to pass through the terminal insertion part 119c and then be connected to a cable which is directed to the terminal 108.
[0185] [00185] Three terminal insertion parts or portions 119c can be provided, and the three terminal insertion parts 119c can be arranged or provided along an outer circumference of the second wall 115b. The end part 141d can be inserted into an end insert 119c among the three end insert 119c. The rest of the end insertion parts 119c can be provided to prevent the structural frame 110 from being deformed and maintain a balance of the structural frame 110. The end insertion parts 119c can be arranged in a circular fashion at the same angle, i.e. an angle of about 120 ° around the center of the axial direction of the compressor 10, taking into account a general balance of the structural frame flange 112 and a relationship between the first and second coupling holes 119a and 119b.
[0186] [00186] A structural frame recess or recess 119d, in which the remaining portion, except for the first coupling orifice 119a, the second coupling orifice 119b and the end insertion part 119c, is recessed, can be defined along of a circumference of a left surface or first surface of the structural frame flange 112. Three parts of structural frame recess 119d may be provided in the same shape as the arranged shape of the first and second coupling holes 119a and 119b and the part terminal insert 119. Similarly, the three recess parts of structural frame 119d can be arranged in a circular fashion at the same angle, that is, an angle of about 120 ° around the center of the axial direction of the compressor 10.
[0187] [00187] Thus, the three holes, that is, the first and second coupling holes 119a and 119b, the terminal insertion part 119c, and the structural frame recess part 119b can be provided along the circumference of the flange of structural frame 112 and also arranged or provided at a predetermined interval in a circumferential direction around the central portion in the axial direction of structural frame 110. Thus, structural frame 110 can be supported at three points in the peripheral parts, that is, in the roof stator 300 and discharge cover 200, to maintain a weight balance and achieve a stable coupling.
[0188] [00188] When the structural frame 110 is coupled to the stator cover 300 or to the discharge cover 200 or fitted by pressure and coupled to the cylinder 120, a great stress can be applied to the structural frame 110. In addition, the load generated while the compressor is activated can be transmitted through the coupling structure.
[0189] [00189] In this embodiment, since the first and second coupling holes 119a and 119b, the terminal insertion part 119c and the structural frame recess 119d can be arranged or provided at the three points of the structural frame flange 112 that is, they can be arranged or uniformly arranged in the circumferential direction around the central portion in the axial direction of the structural frame 110, a concentration of stress can be prevented, and a load generated during operation can be dispersed evenly.
[0190] [00190] The recessed part of structural frame 119d may prevent a fine deformation of structural frame 110, which occurs when the coupling member is coupled to the first and second coupling holes 119a and 119b, from having an influence on the part flange housing 111b into which cylinder 120 is inserted, thereby preventing cylinder 120 from being deformed and preventing the occurrence of mounting defects in cylinder 120. That is, when the coupling member is coupled to the first and the According to coupling holes 119a and 119b, deformation can occur only in an area adjacent to the first and second coupling holes 119a and 119b in an internal area of the recessed part of structural frame 119d.
[0191] [00191] Structural frame 110 may additionally include a slope portion or portion of structural frame 113 that extends in an inclined plane from structural frame flange 112 to structural frame body 111. An outer surface of the sloping part structural frame 113 can be tilted at an angle of about 0 ° to about 90 ° with respect to the outer circumferential surface of the structural frame body 111, i.e., in the axial direction.
[0192] [00192] A gas orifice 114, which guides the refrigerant discharged from the discharge valve 161 to a gas inlet part or inlet 126a of cylinder 120, can be defined in the frame tilting part 113. Gas orifice 114 can pass through the interior of the tilting part of structural frame 113.
[0193] [00193] The gas orifice 114 can extend from the structural frame flange 112 to the structural frame body 111 by means of the structural frame inclination part 113. Since the gas orifice 114 is defined by passing through a portion of the frame with a relatively thick thickness to the structural frame flange 112, the structural frame inclination part 113 and the structural frame body 111, the structural frame 110 can be prevented from having its strength reduced due to the formation of the gas 114. Gas orifice 114 may extend in an inclined plane corresponding to an extension direction of the structural frame inclination part 113.
[0194] [00194] A discharge filter 205, which filters foreign substances from the refrigerant introduced into the gas orifice 114, can be arranged in an inlet port 114a of the gas orifice 114. The discharge filter 205 can be installed or provided in the third wall 115c.
[0195] [00195] The discharge filter 205 can be installed on or inside a filter groove 117 defined in the structural frame flange 112. The filter groove 117 can be lowered backwards from the third wall 115c and have a shape corresponding to a discharge filter shape 205.
[0196] [00196] That is, the inlet port 114a of gas orifice 114 can be connected to filter groove 117 and gas orifice 114 can pass through structural frame flange 112 and structural frame inclination part 113 from of the filter groove 117 to extend to the inner circumferential surface of the frame body 111. Thus, an outlet port 114b of the gas orifice 114 can communicate with the inner circumferential surface of the frame body 111.
[0197] [00197] The linear compressor 10 can additionally include a filter sealing member or seal 118 installed or provided on a rear side, that is, an outlet side of the discharge filter 205. Each of the filter sealing members 118 can have an approximately annular shape. The filter sealing member 118 can be placed over the filter groove 117. When the discharge filter 200 presses on the filter groove 117, the filter sealing member 118 can be snapped into the filter groove 117.
[0198] [00198] Three parts of structural frame slope 113 can be provided along the circumference of the structural frame body 111.0 gas orifice 114 can be defined in only one part of structural frame slope 113 among the three parts of structural frame slope 113. The rest of the tilting portions of structural frame 113 can be provided to prevent structural frame 110 from being deformed and maintain the balance of structural frame 110.
[0199] [00199] The structural frame inclination parts 113 can also be arranged circularly at an angle of about 120 ° around the center in the axial direction of the compressor 10. In addition, the terminal insertion part 119c and the inclination of frame 113, can be arranged at the same angle, that is, on the same extension line. Thus, a general structure of the structural frame flange 112 can be further improved in stability, and the frame 110 can generally be maintained in a stable state during the operation of the compressor 10.
[0200] [00200] In addition, when structural frame 110 is coupled to stator cover 300 or discharge cover 200 or fitted by pressure and coupled to cylinder 120, a great deal of stress can be applied to structural frame 110. If only a part of structural frame slope 113 is provided in frame 110, stress can be concentrated at a specific point, causing deformation of structural frame 110. Thus, in this embodiment, the three parts of structural frame slope 113 can be provided outside the frame body. structural 111, that is, uniformly arranged in the circumferential direction around the central portion in the axial direction of structural frame 110 to prevent stress from being concentrated.
[0201] [00201] That is, the cylinder 120 can be coupled to the interior of the structural frame 110. For example, the cylinder 120 can be coupled to the structural frame 110 through a pressure fitting process, for example.
[0202] [00202] Cylinder 120 may include a cylinder body 121, extending in the axial direction, and a cylinder flange 122 arranged or provided outside a front portion of cylinder body 121. Cylinder body 121 may be cylindrical in shape. with a central axis in the axial direction and be inserted into the frame body 111. Thus, an outer circumferential surface of the cylinder body 121 can be arranged to face an inner circumferential surface of the frame body 111. The inlet part gas 126, into which refrigerant gas flowing through gas orifice 114 can be introduced, can be provided in cylinder body 121.
[0203] [00203] The linear compressor 10 may additionally include a pocket of gas 110b disposed or provided between the inner circumferential surface of the structural frame 110 and the outer circumferential surface of the cylinder 120 so that the gas used as the bearing can flow. A cooling gas passage from the outlet port 114b of the gas orifice 114 to the gas inlet part 126 can define at least a portion of the gas pocket 110b. In addition, the gas inlet part 126 may be arranged or provided on an inlet side of a cylinder nozzle 125, which will be described below.
[0204] [00204] The gas inlet part 126 can be lowered inwardly from the outer circumferential surface of the cylinder body 121 in the radial direction. In addition, the gas inlet part 126 may have a circular shape along the outer circumferential surface of the cylinder body 121 with respect to the central axis in the axial direction.
[0205] [00205] A plurality of the gas inlet part 126 may be provided. For example, two gas inlet parts 126 can be provided. A first gas inlet part 126a between the two gas inlet parts 126 may be arranged or provided in a front portion of the cylinder body 121, i.e., in a position that is close to the discharge valve 161, and a second gas inlet part 126b, may be arranged in a rear portion of cylinder body 121, i.e., a position that is close to a suction side of the refrigerant compressor. That is, the first gas inlet part 126a can be arranged or provided on a front side with respect to a central portion in a forward and backward direction of the cylinder body 121, and the second gas inlet part 126b it can be arranged or provided on a rear side.
[0206] [00206] The first gas inlet part 126a may be arranged or provided in a position that is adjacent to the outlet port 114b of the gas orifice 114. That is, a distance from the outlet port 114b of the gas orifice 114 to the the first gas inlet part 126a may be less than a distance from the outlet port 114b to the second gas inlet part 126b.
[0207] [00207] Since an internal pressure of cylinder 120 is relatively high in a position that is close to the discharge side of the refrigerant, that is, the interior of the first gas inlet part 126a, the outlet port 114b of the orifice gas 114 can be arranged or provided adjacent to the first gas inlet part 126a and thus a relatively large amount of refrigerant can be introduced into cylinder 120 through the first gas inlet part 126a. As a result, a function of the gas bearing can be improved. In addition, while piston 130 exercises reciprocal movement, abrasion of cylinder 120 and piston 130 can be prevented.
[0208] [00208] A cylinder filter member 126c can be installed or provided in the gas inlet part 126. The cylinder filter member 126c can prevent a foreign substance of a predetermined size or larger from being introduced into cylinder 120 and perform a oil absorption function contained in the refrigerant. The predetermined size can be about 1 pm.
[0209] [00209] The cylinder filter member 126c may include a filament that is wound around the gas inlet part 126, for example. The filament can be made of a polyethylene terephthalate (PET) material and have a predetermined thickness or diameter, for example.
[0210] [00210] The filament thickness or diameter can be determined to have adequate dimensions, taking into account a filament resistance. If the thickness or diameter of the filament is very small, the filament can be easily broken due to its very low resistance. On the other hand, if the thickness or diameter of the filament is very large, a filtering effect in relation to foreign substances can be deteriorated due to a very large pore in the gas inlet part 126 when the filament is wound.
[0211] [00211] The cylinder body 121 may additionally include the cylinder nozzle 125 which extends inwardly from the gas inlet part 126 in the radial direction. The cylinder nozzle 125 can extend to the inner circumferential surface of the cylinder body 121.
[0212] [00212] The cylinder nozzle 125 may include a first nozzle part or nozzle 125a extending from the first gas inlet part 126a to the inner circumferential surface of the cylinder body 121 and a second nozzle part or nozzle 125 extending from the second gas inlet part 126b to the inner circumferential surface of the cylinder body 121.
[0213] [00213] The refrigerant that is filtered by the cylinder filter member 126c, when passing through the first gas inlet part 126a, can be introduced into a space between the inner circumferential surface of the first cylinder body 121 and the outer circumferential surface of the piston body 131 through the first nozzle part 125a. In addition, the refrigerant that is filtered by the cylinder filter member 126c, when passing through the second gas inlet part 126b, can be introduced into a space between the inner circumferential surface of the first cylinder body 121 and the outer circumferential surface of the piston body 131 through the second nozzle part 125. The gas coolant flowing to the outer circumferential surface of the piston body 131 through the first and second nozzle parts 125a and 125b can provide a levitation force to the piston 130 to perform a function like the gas bearing in relation to piston 130.
[0214] [00214] The cylinder flange 122 may include a first flange 122a extending outwardly from the cylinder body 121 in the radial direction and a second flange 122b extending forward from the first flange 122a. A front cylinder part or portion 121a of cylinder body 121 and the first and second flanges 122a and 122b can define a portion of deformable space or space 122e which is deformable when cylinder 120 is snapped into structural frame 110. The second flange 122b can be snapped onto an inner surface of the first wall 115a of structural frame 110. That is, the inner surface of the first wall 115a and the outer surface of the second flange 122b, respectively, can provide snap-fit parts which are fitted by pressure in relation to each other.
[0215] [00215] The guide groove 115e for easily processing the gas orifice 114 can be defined on the structural frame flange 112. The guide groove 115e can be formed by lowering at least a portion of the second wall 115b and defined in a edge of the filter groove 117.
[0216] [00216] While the gas orifice 114 is being processed, a processing mechanism may perform drilling from the filter groove 117 to the structural frame tilting part 113. The processing mechanism may interfere with the second wall 115b, causing a limitation that does not make drilling easy. Thus, in this embodiment, the guide groove 115e can be defined in the second wall 115b and the processing mechanism can be arranged in the guide groove 115e to facilitate the processing of the gas orifice 114.
[0217] [00217] Fig. 13 is an exploded perspective view illustrating the piston and the suction valve according to an embodiment. Fig. 14 is a left side view or a side view of the piston. Fig. 15 is a cross-sectional view illustrating a state in which the piston is inserted into the cylinder according to an embodiment.
[0218] [00218] As illustrated in the figures, piston 130 can exert reciprocal movement in the axial direction, that is, in the forward and backward direction inside the cylinder 120, and the suction valve 135 can be coupled to a front surface of the piston 130.
[0219] [00219] The linear compressor 10 can additionally include a valve coupling member 134 that couples the suction valve 135 to a coupling port 133a of piston 130. Coupling port 133a can be defined in an approximately central portion of a surface front end of piston 130. Valve coupling member 134 can pass through valve coupling port 135a of suction valve 135 and be coupled to coupling port 133a.
[0220] [00220] Piston 130 may include a piston body 131 with an approximately cylindrical shape and extending in the forward and backward direction and a piston flange 132 extending outwardly from piston body 131 in the radial direction . The front portion of the piston body 131 can include a front end of the main body 131a in which the coupling orifice 133a can be defined. A suction port 133, which is selectively covered by the suction valve 135, can be defined at the front end of main body 131a.
[0221] [00221] A plurality of the suction port 133 can be provided, and the plurality of suction port 133 can be defined outside the coupling port 133a. The plurality of suction ports 133 can be arranged in a circular manner around the coupling port 133a.
[0222] [00222] A number of suction holes 133 can be determined according to a flow rate of the refrigerant that passes through the suction holes 133. Thus, a sum of total areas of the plurality of suction holes 133 can be the same, and the number and size of suction holes 133 can be adjusted.
[0223] [00223] When the plurality of suction ports 133 is provided, although a portion of the suction ports 133 is blocked or abnormal, the refrigerant can be introduced. When the plurality of suction ports 133 is provided, excessive pressure may not be applied to the suction valve 135, which is elastically deformable when the refrigerant passes through to prevent the suction valve 135 from being damaged.
[0224] [00224] A pair of suction holes 133 may be arranged or provided adjacent to each other. The plurality of suction ports 133, in which two suction ports 133 are provided in pairs, can be arranged or provided in the same gap around the coupling port 133a. That is, the plurality of pairs of suction holes 133 can be arranged in a circular fashion at an angle of about 90 ° around a center of piston 130.
[0225] [00225] The suction valve 135 can have a plate-shaped structure, that is, a plate shape made of elastic metal or resin material to open and close the suction port 133 according to the flow of the refrigerant . The suction valve 135 can include a plurality of cover plates 135b extending outwardly with respect to the central portion in which the valve coupling orifice 135a can be defined. Four cover plates 135b can be arranged or provided in the same arrangement as that of the suction holes 133. That is, a cover plate 135b can cover the pair of suction holes 133 which are successively adjacent to each other.
[0226] [00226] The cover plate 135b may have a width that gradually increases outwardly from the central portion. Thus, the covered portion of the suction port 133 can increase in width, and the elastic deformable portion connected to the central portion can decrease in width to allow the cover plate 135b to be elastically deformed easily.
[0227] [00227] The cover plate 135b and the adjacent cover plate 135b can rotate at an angle of approximately 90 ° to each other and thus be spaced from each other. Thus, an effect of the refrigerant passing through the suction holes 133 adjacent to each other can be minimized to allow the refrigerant to flow smoothly. In addition, a cover plate 135b can be configured to cover two suction holes 133, so that cover plate 135b with a predefined or predetermined elastic constant can be elastically deformed easily when the refrigerant flows and then opens.
[0228] [00228] An opening 135d can be defined on one side of the cover plate 135b adjacent to the central portion. The opening 135d can be defined between the coupling orifice 135a and the suction orifice 133 to allow the cover plate 135b to be elastically deformed more effectively.
[0229] [00229] A rear portion of piston body 131 can be opened to aspirate the coolant. At least a portion of the suction muffler 150, i.e. the first muffler 151, can be inserted into the piston body 131 through the open rear portion of the piston body 131.
[0230] [00230] A first piston groove 136a can be defined on the outer circumferential surface of the piston body 131. The first piston groove 136a can be defined on a front side with respect to a center line C1 in a radial direction of the piston body 131. The first piston groove 136a can be understood as a component that guides a smooth flow of the refrigerant gas introduced through the cylinder nozzle 125 and prevents a loss of pressure from occurring. The first piston groove 136a can be defined along a circumference of the outer circumferential surface of the piston body 131 and have, for example, an annular shape.
[0231] [00231] A second piston groove 136b can be defined on the outer circumferential surface of the piston body 131. The second piston groove 136b can be defined on a rear side in relation to the center line C1 in the radial direction of the piston body 131. The second piston groove 136b can be understood as a "discharge guide groove" that guides the discharge of the refrigerant gas used to levitate the piston 130 to the outside of the cylinder 120. As the refrigerant gas is discharged outside the cylinder 120 through the second piston groove 136b, the refrigerant gas used as the gas bearing can be prevented from being introduced back into the compression space P through the front side of the piston body 131.
[0232] [00232] The second piston groove 136b can be spaced from the first piston groove 136 and defined along the circumference of the outer circumferential surface of the piston body 131. For example, the second piston groove 136b can be annular in shape. A plurality of second piston grooves 136b can be provided.
[0233] [00233] The second piston groove 136b may be smaller in size than the size of the first piston groove 136. Due to the structure described above, a very large amount of refrigerant gas, used as the gas bearing, can flow into the second piston groove 136b compared to the first piston groove 136 to prevent the gas bearing from deteriorating in performance.
[0234] [00234] Furthermore, a width of the first piston groove 136a in the forward and backward direction may be greater than a width of the second piston groove 136a in the forward and backward direction.
[0235] [00235] Piston flange 132 may include a flange body 132a that extends outwardly from the rear portion of piston body 131 in the radial direction and a piston coupling part or portion 132b that further extends outwardly from the flange body 132a in the radial direction. The piston coupling part 132b can include a piston coupling hole 132c to which a support coupling member 460 can be attached. The support coupling member 460 can pass through the piston coupling orifice 132c and be coupled to the magnetic structural frame 138 and the support 400. In addition, three piston coupling parts 132b can be provided and arranged in a circular manner in one angle of about 120 ° around the center of the piston.
[0236] [00236] Thus, deformation of the piston 130 can be prevented when the piston 130, the magnetic structural frame 110 and the support 400 are coupled together by the support coupling member 460. In addition, a load transmitted during the operation of the compressor 10 can be evenly dispersed to the piston in general 130 to maintain a balance of piston 130.
[0237] [00237] The second piston groove 136b can be arranged or provided between the first piston groove 136 and the piston flange 132. The piston body 131 can include a first body 131b, in which piston grooves 136a and 136b are defined and extending in the axial direction, a piston inclination part or portion 131c extending in an inclined plane from the first body 131a in the axial direction, and a second body 131d extending from the piston inclination part 131c to the piston flange 132 in the axial direction. The piston inclination portion 131c can extend backwards inward in the radial direction at a predetermined angle (0).
[0238] [00238] The second body 131d may have an outside diameter smaller than an outside diameter of the first body 131b. In addition, an inner circumferential surface 131e of the first body 131b and an inner circumferential surface of the second body 131d can form a curved surface. Thus, the first body 131b may have a thickness greater than that of the second body 131d.
[0239] [00239] Due to a difference in shape and thickness of the first body 131b and the second body 131d, a flow space through which the refrigerant gas used as the gas bearing flows can be relatively large outside the second body 131d. Thus, the refrigerant gas flowing through the second piston groove 136b can be easily discharged.
[0240] [00240] Additionally, since the outer circumferential surface of the second body 131d is arranged or provided in a position that is relatively far from the inner circumferential surface of the cylinder 120, a force (lateral force) in the radial direction can be applied to the piston 130 while piston 130 exercises reciprocal movement, and movement of piston 130 in the radial direction can occur. Thus, a phenomenon in which the piston body 131 interferes with the rear end of the cylinder 120 can be prevented. In addition, since the movement of the piston body 131 is guided so that a degree of freedom of the resonant springs 176a and 176 is ensured, stress applied to the resonant springs 176a and 176b while the compressor operates can be reduced, preventing the resonant springs 176a and 176b are worn and damaged.
[0241] [00241] Piston 130 can be levitated from the inner circumferential surface of cylinder 120 by a refrigerant pressure introduced through cylinder nozzle parts 125a and 125b. The refrigerant passing through cylinder 120 may have a flow cross-sectional area that gradually increases from cylinder nozzle parts 125a and 125b towards a space between cylinder 120 and piston 130 to prevent pressure from falling suddenly when the soda flows.
[0242] [00242] The piston 130 can exert a reciprocal movement inside the cylinder 120 in the forward and backward direction. During alternation of piston 130, the first piston groove 136a defined in piston body 131 can be arranged between the two cylinder nozzles 125a and 125b provided in cylinder 120. Thus, during alternation of piston 130, the refrigerant discharged through the the discharge valve 161 can flow uniformly to the outer circumferential surface of the piston body 131 through the gas inlet part 126 and the cylinder nozzle 125 of the cylinder 120.
[0243] [00243] At least a portion of the refrigerant flowing to the inner circumferential surface of cylinder 120 through the second nozzle part 125 and the second gas inlet part 126b can flow forward to the first piston groove 136a, and the residual refrigerant can flow backwards. As described above, due to the structure of the first piston groove 136a, the refrigerant can be uniformly fed from the front side to the rear side of the piston body 131.
[0244] [00244] The refrigerant flowing to the outer circumferential surface of the piston body 131 and thus used as the gas bearing can be discharged to the outside of cylinder 120. At least a portion of the refrigerant used as the gas bearing can flow to the rear side of cylinder 120, that is, a portion into which the refrigerant is sucked into cylinder 120, and the remaining refrigerant can flow to the front side of cylinder 120, that is, a portion in which the space compression ratio P is defined.
[0245] [00245] The refrigerant that flows to the front and rear sides of cylinder 120 and is then discharged from cylinder 120 can be introduced back into the compression space P to stop the flow of the refrigerant flowing into the compression space P through of the suction valve 135. Thus, the compression performance of the refrigerant may be deteriorated.
[0246] [00246] Thus, the second piston groove 136b can be defined in the rear portion of the piston body 131 to increase an amount of refrigerant used as the gas bearing, i.e. refrigerant flowing to the rear side of cylinder 120 in the refrigerant flowing to the outer circumferential surface of the piston body 131 through the cylinder nozzle 125. The refrigerant flowing to the rear side of the cylinder 120 may contain the refrigerant passing through the first piston groove 136a.
[0247] [00247] Since the second piston groove 136b is provided in the piston body 131, the pressure loss on the rear side of the cylinder 120 can be reduced, and thus the refrigerant discharge through the rear side of the cylinder 120 can be performed more easily. The refrigerant can be discharged to the outside through a space between the rear end of the cylinder 120 and the piston flange 132.
[0248] [00248] Thus, a quantity of refrigerant flowing to the rear side of cylinder 120 in the refrigerant used as the gas bearing can increase to relatively reduce a quantity of refrigerant introduced in the compression space P. As a result, compressor compression efficiency linear 10 can be improved, and energy consumption can be reduced. Thus, when the linear compressor 10 is provided in a refrigerator, the energy consumption of the refrigerator can be reduced.
[0249] [00249] For example, when the second piston groove 136b is not provided in the piston body 131, a fact, in which the ratio of the refrigerant flowing to the front side and the rear side of cylinder 120 is about 45: 55, is confirmed through experimental results. On the other hand, when the second piston groove 136b is provided in the piston body 131, this ratio of the refrigerant flowing to the front and rear side of the cylinder 120 of 40: 60 is confirmed through the experimental results.
[0250] [00250] Fig. 16 is a perspective view of the stator cover according to an embodiment. As shown in the figure, the stator cover 300 may include a flat portion or portion 310 with a circular shape and a flap 320 that extends backward along a circumference of the flat portion 310. A center of the flat portion 310 can be opened , and the muffler 150 and the magnetic structural frame 110 can pass through the open center of the flat part 310. In addition, an entire surface of the flat part 310 can support the stator cover 300 on one rear side.
[0251] [00251] A third coupling hole 311, to which the cover coupling member 149a can be coupled, can be defined in the stator cover 300. Three third coupling holes 311 can be provided to match the number of coupling members of cover 149a and arranged at the same interval along the flat part 310 of the stator cover 300. In addition, the third coupling holes 311 can be defined at the same interval around the center of the axial direction of the compressor 10 and arranged circularly in an angle of about 120 °.
[0252] [00252] A fourth coupling hole 312, to which the rear cover coupling member 176 to be coupled to the rear cover 170 can be attached, can be defined in the flat part 310. In addition, three fourth coupling holes 312 can be arranged or provided in the same interval around the center of the axial direction of the compressor 10 and arranged in a circular shape at an angle of about 120 °. The fourth coupling hole 312 can be defined in a center between the third coupling holes 311 spaced from each other. That is, the third coupling holes 311 and the fourth coupling holes 312 can be arranged in a successive circular fashion at an angle of about 60 ° around the center of the stator cover 300. Thus, the third coupling holes 311 and the fourth coupling holes 312 can alternatively be arranged in succession at the same interval along the circumference of the flat part 310 of the stator cover 300.
[0253] [00253] The third coupling holes 311 and the fourth coupling holes 312 can be defined in a central portion between the stator covers 141a which are successively arranged in the motor assembly 140. Thus, an arranged space of the coupling member of cover 149a and rear cover coupling member 176, which are coupled to the third and fourth coupling holes 311 and 312, can be ensured to improve workability and achieve a compact size. In addition, for this purpose, six stator cores 141a can be provided. The cover coupling member 149a and the rear cover coupling member 176 can be arranged between the stator cores 141a.
[0254] [00254] A stator side support part or support 313 that supports a front end of the first resonant spring 176a can be arranged or provided in the flat part 310. The stator side support part 313 can project backwards from from a position corresponding to an assembled position of the first resonant spring 176a and be formed through a transformation process, such as forming when the stator cover 300 is molded. In addition, the stator side support part 313 can be inserted into the first resonant spring 176a to maintain a steadily accommodated state of the first resonant spring 176a.
[0255] [00255] A pair of stator side support parts 313 can be arranged or provided adjacent to each other to match the arrangement of the first resonant springs 176a, and all six stator side support parts 313 in which two parts of stator side supports 313 are provided in pairs and can be arranged in the same range. That is, the stator side support parts 313 can be arranged in a circular fashion in pairs at an angle of 120 ° around the center in the axial direction of the compressor 10. In addition, the stator side support part 313 can be arranged in a center between the fourth coupling holes 312.
[0256] [00256] The flap 320 may include a first flap 321 and a flap 322, each of which has a predetermined height. The first flap 321 can be arranged in a position corresponding to that of the stator side support part 313 and be larger than the second flap 322. In addition, the first flap 321 can cover a lower end of the first resonant spring 176a mounted on stator side support part 313 to maintain a stable mounted state without separating the first resonant spring 176a (see Fig. 5).
[0257] [00257] The second edge 322 may be lower than the first edge 321 and arranged or provided between the first edges 321. In addition, the second flap 322 has a width equal to or slightly greater than a width of the leg. coupling 174 of the rear cover 170. Thus, in a state in which the rear cover 170 is coupled to the stator cover 300, the leg coupling part 175 of the coupling leg 174 that contacts or contacts the flat part 310 can be exposed through the second flap 322 (see Fig. 5).
[0258] [00258] Fig. 17 is an exploded perspective view illustrating a support coupling structure and a resonant spring according to an embodiment. Fig. 18 is a plan view of the support.
[0259] [00259] As illustrated in the figures, support 400 can include a support body 410 and a spring support part or portion 440 that extends along a circumference of support body 410. Support 400 can support a rear end of the first resonant spring 176a and a leading end of the second resonant spring 176b through the spring support portion 440.
[0260] [00260] The support body 410 can have a cylindrical shape, a rear surface from which it is completely open. The support body 410 can have a front support surface 420 and a circumferential support surface 430. The front support surface 420 can have a center which is open in a circular manner and thus the third muffler 153 can pass through the open center of the front support surface 420. In addition, the front support surface 420 can be coupled to the magnetic structural frame 110 and piston 130 and exert reciprocal movement together with piston 130 when piston 130 exerts reciprocal movement.
[0261] [00261] A support hole 421, to which the support coupling member 460 for coupling the support support, the magnetic structural frame 110 and the piston 130 to each other can be coupled, can be defined on the front support surface 420. Three support holes 421 can be defined at the same interval. That is, the three support holes 421 can be arranged circularly at an angle of about 120 ° around a center of support 400.
[0262] [00262] A first front hole 422 can be defined between the support holes 421. The first front holes 422 can extend longitudinally along the front surface of the support 400 to allow air to flow when the support 400 exerts reciprocal movement in the directions for back and forth.
[0263] [00263] A plurality of side holes 431 can be defined along a circumference of the circumferential support surface 430. Side holes 431 can discharge air from inside the support body 410 to the outside effectively when the support 400 exerts movement reciprocal to prevent support 400 from having an influence on wind speed. In addition, support 400 can be lightweight due to side hole 431, and a structurally unnecessary portion can be removed to reduce manufacturing costs.
[0264] [00264] The spring support part 440 can be arranged or provided on the circumferential support surface 430. The spring support part 440 can be folded out from an open rear end of the support body 410. In addition, a reinforcement part or portion 432, which prevents the spring support part 440 from being deformed, can project from an edge on which the spring support part 440 and the support body 410 come into contact with or contact each other. A plurality between the reinforcement part 432 can be provided, and the plurality of reinforcement parts 432 can project successively at a predetermined interval along the spring support part 440.
[0265] [00265] In addition, three spring support parts 440 can be provided and arranged circularly at an angle of about 120 ° around the center of the axial direction of support 400. In addition, the spring support part 440 it may be arranged or provided in the same position as those of the resonant springs 176a and 176b. Thus, the rear end of the first resonant spring 176a and the rear end of the second resonant spring 176b can be supported by the spring support portion 440.
[0266] [00266] A pair of spring housing parts or accommodations 442 and 452 may be arranged or provided in the spring support portion 440 to support the pair of resonant springs 176a and 176b. The spring housing parts 442 and 452 can include a rear protrusion 442, which protrudes from the spring support part 440, and a front protrusion 452, on which an accommodation or accommodation member 450 mounted on the support part spring clip 440 can be arranged or provided.
[0267] [00267] Support 400 can be manufactured by processing sheet metal, for example. When support 400 is processed, rear protrusion 442 projecting outwardly from spring support portion 440 can be formed. In addition, the rear protrusion 442 may be arranged or provided along a circumference of a support hole 441 defined in the spring support part 440. Thus, the rear protrusion 442 can be circular in shape and be inserted at the front end of the second resonant spring 176b.
[0268] [00268] In addition, the accommodation member 450 with an annular shape can be inserted into the support hole 441. The accommodation member 450 can be manufactured by injection molding using a plastic material and snapped into the spring support part 440, for example. The accommodation member 450 can include a snap-fit part or portion 451 snap-fit into the support hole 441 and a front protrusion 452 that protrudes forward from the spring support part 440. The front protrusion 452 can have the same shape as the rear protrusion 442 and be inserted at the rear end of the first resonant spring 176a.
[0269] [00269] Thus, each of the first two resonant springs 176a and the second resonant springs 176b can be supported by the spring support part 440. In addition, the first six resonant springs 176a and the six second resonant springs 176b can be supported as a whole by support 400.
[0270] [00270] If necessary, support 400 can be processed through sheet metal processing to form folded spring support part 440 and then front protrusion 452 and rear protrusion 442 can be formed through cut processing , for example. However, due to the structure described above, support 400 can be formed very simply through sheet metal processing, and accommodation member 450, which can be injection molded, can be mounted to support resonant springs 176a and 176b arranged on both sides in the forward and backward direction. Thus, productivity can be improved and manufacturing costs can be reduced compared to those in the process described above, in which cutting processing is performed after performing sheet metal processing is performed to form the front and rear protrusions. 452 and 442, which project to both sides.
[0271] [00271] Fig. 19 is a plan view of a counterweight according to an embodiment. As shown in the figure, counterweight 179 can have a circular plate shape with a central front opening 179a and be mounted on the inner surface of support 400. Counterweight 179 can be integrally coupled to support 400 by support coupling member 460 coupled to support 400. In addition, the counterweight 179 can have the same shape as a shape of the front support surface 420.
[0272] [00272] That is, three weight holes 179b can be defined in the counterweight 179 and three second front holes 179c can be defined between the weight holes 179a. Each of the weight holes 179b can be the same size as the support hole 421 and be arranged or provided in the same position as the support hole 421. Thus, the counterweight 179 and can be fixed to and mounted on the support 400 by the support coupling member 460. In addition, the second front hole 179c can be the same size and shape as the side hole 431 and be arranged or provided in the same position as the side hole 431. Thus, when the support 400 exerts movement reciprocal it is possible to allow an air flow inside and outside the support 400.
[0273] [00273] A template groove 179d, into which a template can be inserted, can be defined in a center of the second front hole 179c to facilitate the assembly process. The template groove 179d can also be formed in a position corresponding to the support 400.
[0274] [00274] The three weight holes 179b defined in the counterweight 179 can also be arranged circularly at the same interval at an angle of about 120 ° around a center of the counterweight 179. In addition, a second front hole 179c can be defined between the two weight holes 179b. Counterweight 179 may also have the coupling structure on which counterweight 179 is supported at three points. Thus, a weight balance of the support coupling member 460 can be balanced as a whole, stress can be dispersed evenly when the support coupling member 460 is coupled, and a load generated during the operation of the compressor 10 can be transmitted uniformly.
[0275] [00275] Fig. 20 is an exploded perspective view of a rear cover and a first enclosure cover when viewed from a front side according to an embodiment. Fig. 21 is an exploded perspective view of the rear cover, the first support device, and the first enclosure cover when viewed from the rear side. Fig. 22 is a plan view of a first disc spring according to an embodiment.
[0276] [00276] As illustrated in the figures, the first support device 500 can be coupled to the first housing cover 102 in a state in which the first support device 500 is coupled to one end of the compressor body 100, i.e., one end of the rear cover 170. The first support device 500 may include a first spring plate 510. When the first support device 500 is coupled to the first housing cover 102, the first plate spring 510 can be attached to the rear cover 170.
[0277] [00277] The first disc spring 510 may be arranged to rise within the housing 101 so that the axis of the compressor body 100 passes through it. When the first support device 500 includes the first disc spring 510, the first support device 500 may be reduced in size. In addition, the vibration of the compressor body 100 can be effectively absorbed, and also a collision between the compressor body 100 and the housing 101 can be prevented by a large transverse stiffness (stiffness in a direction perpendicular to an axial direction of the body compressor) and a small longitudinal stiffness (stiffness in the axial direction of the compressor body).
[0278] [00278] The first support device 500 can additionally include a first spring connection part 520 connected to the first spring plate 510. The first spring connection part 520 can allow the first support device 500 to be easily coupled to the first casing cover 102.
[0279] [00279] A cover support part 102a that couples the first support device 500 can be provided in the first cover of the housing 102. The cover support part 102a can be integrated with the first cover of the housing 102 or coupled to the first cover of casing 102.
[0280] [00280] The first spring connection part 520 can be inserted into a housing part or portion 102c of the cover support part 102a. A damper or damper part 530 may be arranged or provided between the first spring connection part 520 and the cover support part 102a. Thus, the vibration transmitted from the first spring connection part 520 may not be transmitted to the cover support part 102a, but may be absorbed by the damper part 530.
[0281] [00281] The damper part 530 can be made of a rubber material or material that is capable of absorbing an impact while being deformed by an external force. The damper part 530 may have an opening 534 through which the refrigerant can pass.
[0282] [00282] In this embodiment, the vibration in the axial direction of the compressor body 100 can be absorbed by the first spring plate 510 and the vibration in the radial direction can be absorbed by the damper part 530. Thus, the transmission of the vibration of the compressor body 100 for housing 101 it can be effectively prevented by the first housing cover 102.
[0283] [00283] The first spring connection part 520 may include a refrigerant passage through which the refrigerant sucked through the suction pipe 104 can pass.
[0284] [00284] The first disc spring 510 may include an outer flap 511, an inner flap 515 and a connecting part or portion 519 with a spiral shape and connecting the outer flap 511 to the inner flap 515. The inner flap 515 may include a plurality of rounded extension parts or portions 516 spaced from each other in a circumferential direction. In addition, the connecting part 519 can be connected to each of the plurality of rounded extension parts 516.
[0285] [00285] The first spring connection part 520 can be formed integrally with the inner flap 515 through insertion injection molding, for example. Thus, in a state in which the first spring connection part 520 is molded by insertion injection into the inner flap 515, the first spring connection part 520 can be prevented from being separated in the axial direction of the compressor body 100. In a state in which the first spring connection part 520 is molded by insertion injection to the first plate spring 510, a plurality of holes 517 filled with a resin, when the insertion injection molding is performed, can be defined in the inner flap 515 to prevent the first spring connection part 520 from rotating with respect to the first plate spring 510.
[0286] [00286] A plurality of extension parts or portions 513 may be arranged or provided on an inner circumferential surface of the outer flap 511. The plurality of extension parts 513 may be arranged or provided to be spaced from each other in the circumferential direction of the flap outer 511, and the connecting part 519 can be connected to each one of the plurality of extension parts 513. A coupling hole 514, through which the first spring coupling member 540 can pass to couple the first spring plate 510 to the rear cover 170, it can be defined in each of the plurality of extension parts 513.
[0287] [00287] The first spring coupling member 540 can pass through the first spring plate 510 and be coupled to the rear cover coupling hole 172. In addition, the rear cover coupling member 149a can be coupled in a state in which the first disc spring 510 is spaced a predetermined distance behind the rear cover 170 and is elastically deformed in the axial direction of the first disc spring 510.
[0288] [00288] The first disc spring 510 can be attached to the rear cover 170 by the three rear cover coupling members 149a. To that end, three rear cover coupling holes 514 can be provided. In addition, the three rear cover coupling holes 514 can be arranged circularly at an angle of 120 ° around a center of the rear cover 170. The rear cover coupling holes 514 can be arranged circularly in one same gap in the circumferential surface of the first spring plate 510. In addition, three extension parts 513 and three connecting parts 519 connecting the extension parts 513 can be provided.
[0289] [00289] Thus, when the compressor 10 operates, a load applied to the first spring plate 510 may not tend to either side, but be evenly distributed over the entire first spring plate 510. Thus, the load can be dispersed from effectively, and the damping effect of the first spring plate 510 can be achieved while maintaining balance.
[0290] [00290] The rear cover 170 can include a cover body 171, in which the rear cover coupling hole 172 can be defined, and three coupling legs 174 that extend towards the motor 140. In addition, each of the coupling legs 174 can be coupled to the rear surface of the stator cover 300.
[0291] [00291] A leg coupling part 175 can be folded out and arranged or provided at a lower end of each coupling leg 174. A leg hole 175a can be defined in the leg coupling part 175, and the leg member rear cover coupling 176 can be coupled to leg hole 175a to couple rear cover 170 to stator cover 300.
[0292] [00292] The cover side accommodation part 177 may extend outwardly and be arranged or provided in a space between an upper end of the rear cover 170 and the rear cover coupling members 176. The rear end of the second resonant spring 176b can be supported by the cover side accommodation part 177.
[0293] [00293] A number of first plugs 102b can be the same as a number of coupling legs 174. The plurality of first plugs 102b can extend from an inner circumferential surface of the first casing cover 102 to the axis of the body of the compressor 100. The plurality of first plugs 102b can be arranged or provided to be spaced from the inner circumferential surface of the first housing cover 102 in the circumferential direction. In addition, the plurality of coupling legs 174 may be arranged or provided to be spaced from one another in the circumferential direction of the cover body 171.
[0294] [00294] In a state in which the compressor body 100 is attached to the first housing cover 102 by the first support device 500, each of the plurality of coupling legs 174 may be arranged to face each of the plurality of first buffers 102b. Each of the plurality of coupling legs 174 can be spaced from each of the plurality of first plugs 102b. That is, three first plugs 102b can be provided as the leg coupling parts 175 and arranged in a circular fashion at the same interval at an angle of about 120 ° around a center of the housing 101.
[0295] [00295] In a state in which the compressor body 100 does not operate, a distance between housing 101 and motor 140 may be greater than a distance between structural frame 110 and housing 101 and between stator cover 300 and housing 101.
[0296] [00296] Thus, according to one modality, although the compressor body 100 vibrates in the radial direction, other components of the compressor body 100, in addition to motor 140, may not directly collide with housing 101, but first come into contact with or contact the first plug 102b to prevent the compressor body 100, in addition to the motor 140, from being damaged during the transfer of the compressor 10.
[0297] [00297] The three coupling legs 174 can be provided and, in addition, the stator cover 300 and the first spring plate 510, which are coupled to the coupling legs 174, and other components connected to the stator cover 300 and the first plate spring 510 can also be coupled at three points to maintain a general weight balance and prevent local deformation from occurring during assembly. In addition, although coupling leg 174 contacts or contacts the first plug 102b to generate an impact, a load can be dispersed evenly across the rear cover 170 and the entire stator cover 300 and the entire first spring plate 510, which are connected to the rear cover 170, to minimize damage to the compressor body 100.
[0298] [00298] A recess or recess part 171a is defined in the cover body 171. The recess part 171 is lowered from the cover body 171 to the motor 140. In the state in which the compressor body 100 does not operate from the part recess 171a, the first spring connection part 520 can be spaced from the recess part 171a.
[0299] [00299] When the compressor body 100 moves towards the first spring connection part 520 by vibration in the axial direction of the compressor body 100, if the recess part 171a comes into contact with the first spring connection part 520 , the compressor body 100 may no longer move towards a right side. Thus, a movement distance of the compressor body 100 in the axial direction can be reduced to prevent the first disc spring 510 from being excessively deformed. That is, according to one embodiment, the first spring connection part 520 can function as a "third plug" that restricts the movement of the compressor body 100 in one direction when the vibration of the compressor body 100 in the axial direction occurs.
[0300] [00300] Fig. 23 is an exploded perspective view of a discharge cover, a second support device and a second enclosure cover when viewed from a rear side according to an embodiment. Fig. 24 is an exploded perspective view of the discharge cover, the second support device, and the second enclosure cover when viewed from a rear side. Fig. 25 is a plan view of the second support device according to an embodiment.
[0301] [00301] As illustrated in the figures, the second support device 600 can be coupled to the housing 101 in a state of being connected to the discharge cover 200 of the compressor body 100. The second support device 600 can include a second spring plate 610 which reduces the inclination of the compressor body 100 to prevent the compressor body 100 from colliding with the housing. The second support device 600 can additionally include a second spring connection part or portion 620 connected to the second spring plate 610. The second spring connection part 620 can be coupled to the discharge cover 200. In addition, the second support 600 may additionally include a second support device coupling member 630 which couples the second spring connection part 620 to the discharge cover 200.
[0302] [00302] The discharge cover 200 may include a protrusion of cover 290 to which the second spring connection part 620 can be attached. The cover protrusion 290 can be integrated with the discharge cover 200 or coupled to the discharge cover 200. In addition, the cover protrusion 290 can include an insertion part or portion 291 inserted in the second spring connection part 620.
[0303] [00303] In a state in which the insertion part 291 is inserted in the second spring connection part 620, a protrusion 622 may be arranged or provided on an internal circumferential surface 621 of the second spring connection part 620 to prevent the cover protrusion 290 and the second spring connection part 620 rotate relative to each other, and a protrusion housing groove 292, in which protrusion 322 can be housed, can be defined in cover protrusion 290. In addition , the second support device coupling member 630 can be coupled to the insertion part 291 of the cover protrusion 290 inserted in the second spring connection part 620.
[0304] [00304] The second spring connection part 620 can be formed integrally with the second spring plate 610 through insertion injection molding, for example. The second spring connection part 620 can be made of a rubber material to absorb vibrations, for example.
[0305] [00305] The second disc spring 610 may include an outer flap 611, an inner flap 615 and a connecting part or portion 619 with a spiral shape and connecting the outer flap 611 to the inner flap 615. In a state in which the second spring connection part 620 is injection molded to the second spring plate 610, holes 617 with the same function as the plurality of holes 517 defined in the first spring plate 510 can be defined in the inner flap 615 to prevent the second part spring connection plate 620 rotate with respect to second plate spring 610.
[0306] [00306] A plurality of fixing parts or portions 612 extending outwardly in the radial direction may be arranged or provided in the outer flap 611.
[0307] [00307] The second support device 600 may additionally include a washer 640 coupled to the second spring connecting part 620 by the second support device coupling member 630. The washer 640 can have an open cylindrical side.
[0308] [00308] The second housing cover 103 may include a second plug 103a which restricts movement of the compressor body 100 in the axial direction when the compressor body 100 vibrates in the axial direction to prevent the second plate spring 610 from being deformed and preventing the compressor body 100 collides with the housing 101 when the compressor body 100 vibrates in the radial direction.
[0309] [00309] The second plug 103a can have a cylindrical shape in which the washer 640 is housed and open towards the washer 640. That is, the washer 640 and the second plug 103a can be arranged so that the open portions thereof facing each other. Washer 640 can have an internal diameter less than a diameter of the second plug 103a, and thus washer 640 can be housed in plug 103a.
[0310] [00310] While the compressor body 100 operates, when the compressor body 100 vibrates in the radial direction, the washer 640 may come into contact with an internal circumferential surface of the second plug 103a in a state in which the washer 640 is housed in the second buffer 103a to restrict the movement of the compressor body in the radial direction, thereby preventing the compressor body 100 from colliding with housing 101. In addition, in a state in which the operation of the compressor body 100 is interrupted, one end The open part of the washer 640 can be laterally spaced from a surface facing it of the second plug 103a. Thus, while the compressor body 100 operates, when the compressor body 100 vibrates in the axial direction, the washer 640 can contact or contact the same facing surface of the second plug 103a in the axial direction to restrict the movement of the body compressor 100 in the axial direction.
[0311] [00311] The second support device 600 can be attached to and mounted on the spring coupling part 101a by the second support device coupling member 630 provided on the inner surface of the housing 101. The second spring connection part 620 can be in a state of being accommodated on the cover protrusion 290. In addition, when the second housing cover 103 is mounted on the opening of the housing 101, the washer 640 can be in a state of being inserted into the second plug 103a.
[0312] [00312] Fig. 26 is a cross-sectional view illustrating an arrangement relationship of a process piping and a second casing cover according to an embodiment. As illustrated in the figures, when refrigerant is injected into housing 101 through a supply opening 106a of process piping 106 connected to housing 101, a resistor that separates the refrigerant from the oil can be provided in housing 101 if the oil is contained in the soda.
[0313] [00313] At least a portion of the second casing cover 103 may be arranged or provided adjacent to the inner circumferential surface of the casing 101, which corresponds to a point at which the process tubing 106 is coupled. That is, at least a portion of the second casing cover 103 can act as a resistance to the flow of the injected refrigerant through process piping 106. That is, the second casing cover 103 can be a resistor that restricts the flow of the refrigerant.
[0314] [00314] At least a portion of the second casing cover 103 may be arranged or provided to overlap the supply opening 106a in a direction in which the refrigerant is supplied from process piping 106 to allow the second cover of casing 103 acts as the resistance to flow. In addition, to allow the second casing cover 103 to act as the refrigerant resistance, a minimum distance between the second casing cover 103 and the supply opening 106a must be less than an inner diameter D1 of process piping 106 .
[0315] [00315] A diameter D2 of a supply passage defined by the supply opening 106a and the second casing cover 103 may be smaller than the inner diameter D1 of process piping 106. Thus, in view of the passage of the refrigerant, the The passage of the refrigerant introduced through the process piping 106 may have a size that gradually decreases towards the internal space of the housing 101.
[0316] [00316] The interior of the housing 101 may be in a vacuum-like state. In addition, to reduce the time taken to inject the refrigerant, the refrigerant can be injected into housing 101 when the linear compressor 10 operates. Since the internal pressure of the housing 101 is similar to the vacuum, the liquid refrigerant can be naturally vaporized while the liquid refrigerant is injected through the process line 106.
[0317] [00317] In a state in which the operation of the linear compressor 10 is interrupted, although a portion of the liquid refrigerant is not vaporized while the liquid refrigerant is injected through the process pipe 106, the liquid refrigerant and the oil can be separated from each other. another for a difference in density between them inside the casing 101. However, when the refrigerant is injected into the casing 101 while the linear compressor 10 operates, if the liquid refrigerant is not vaporized, the liquid refrigerant from which the oil does not is separated it can flow to the suction silencer 150. Thus, to prevent oil from flowing to the suction silencer 150 when the refrigerant is injected while the linear compressor 10 operates, the liquid refrigerant has to be quickly and completely vaporized to separate the oil.
[0318] [00318] According to one embodiment, when the liquid refrigerant is injected through process piping 106, the second casing cover 103 can act as the refrigerant flow resistance so that the liquid refrigerant is quickly and completely vaporized. Thus, according to one modality, the refrigerant can have its pressure reduced while the refrigerant is injected and, thus, the liquid refrigerant can be completely vaporized. In this process, oil contained in the refrigerant can be separated.
[0319] [00319] When the oil is separated from the refrigerant, only the refrigerant can be sucked into piston 130 to prevent cylinder nozzle 125 from cylinder 120 from being blocked. The liquid oil separated from the refrigerant can be affixed to one or more surfaces of the inner circumferential surface of the housing 101, the outer circumferential surface of the second housing cover 103 and the outer circumferential surface of the compressor body 100.
[0320] [00320] The supply passage can have a diameter D2 that is about 1/2 or less than the diameter D1 of process pipe 106, so that the refrigerant pressure is sufficiently reduced. In addition, the supply passageway can have a cross-sectional area of the passage that is about 50% smaller or less than a cross-sectional area of process pipeline 106. If the cross-sectional area of the passage of the supply exceeds the cross-sectional area of the process pipeline 106 by 50%, the liquid refrigerant cannot be vaporized.
[0321] [00321] In addition, the cross-sectional area of the supply passage can be increased by about 30% or more than the cross-sectional area of process pipe 106. If the cross-sectional area of the passage delivery time is about 30% less than the cross-sectional area of process piping 106, the liquid refrigerant may be sufficiently vaporized, or the time taken to inject the refrigerant can significantly increase to deteriorate work efficiency.
[0322] [00322] Hereinafter, the coupling structure described above inside the compressor will be described according to its position.
[0323] [00323] Fig. 27 is a cut-away perspective view taken along line XXVII-XXVII 'of Fig. 1. As illustrated in the figure, the second support device 600 can be fixed to and mounted on the spring coupling part 101a provided within the housing 101 by the second support device coupling members 630. The second support device coupling members 630 can be arranged circularly in the same range at an angle of about 120 ° around a center of the second support device 600. The second support device coupling members 630 can be arranged circularly at the same angle.
[0324] [00324] Three connecting parts with a spiral shape of the second plate spring 610 that form the second support device 600 can be provided and the connected points can be arranged in a circular manner in the same interval. In addition, the washer 640 mounted on the second spring connection part 519 may be in a state of being housed in the second plug 103a. Thus, a load transmitted to the second support device 600 can be dispersed evenly and the second support device 600 can support the body of the compressor 100 while being kept in balance.
[0325] [00325] Fig. 28 is a cross-sectional view taken along line XXVIII-XXVIII 'of Fig. 1. Fig. 29 is a cross-sectional view taken along line XXIX-XXIX' of Fig. 1 .
[0326] [00326] As shown in the figures, the discharge cover 200 can be attached to the structural frame 110 by the discharge cover coupling member 219b. The discharge cover 200 can have a plurality of partitioned spaces in which the compressed refrigerant can be housed. The discharge cover coupling member 219b may not pass through the internal space of the discharge cover 200, but extend outwardly to pass through a portion attached proximally to structural frame 110 and thus be coupled to structural frame 110.
[0327] [00327] The three discharge cover coupling members 219b can be arranged circularly in the same range at an angle of about 120 ° around a center of the discharge cover 200. Thus, the discharge cover 200 can be fixedly fixed to and mounted on the structural frame 110 to prevent deformation from occurring when the discharge cover 200 is attached and evenly disperse a load that occurs during the operation of the compressor 10.
[0328] [00328] In addition, the spring assembly 163 can be provided inside the discharge cover 200 to elasticly support the discharge valve 161. Thus, when the pressure of the compressed refrigerant, which is applied to the discharge valve 161, reaches a predefined or predetermined pressure, the spring assembly 163 can be elastically deformed to move back and open the discharge valve 161.
[0329] [00329] Spring assembly 163 may include a valve spring 163a formed of three spiral connection parts and spring flap 163b arranged or provided in a circumference of valve spring 163a. In addition, three first protrusions 163c can be arranged in a circular fashion on the spring flap 163a at the same interval and combined with the recess parts 217 within the discharge cover 200. Thus, the spring assembly 163 may not rotate into the interior of the discharge cover 200, but be fixed and stably mounted.
[0330] [00330] Fig. 30 is a cross-sectional view taken along line XXX-XXX 'of Fig. 1. As shown in the figure, cylinder 120 and piston 130 can be arranged in the center of structural frame 110. In addition in addition, three first coupling holes 119a, second coupling holes 119b and three end insertion parts 119c can be arranged in a circular manner in the circumferential direction of the structural frame flange 112.
[0331] [00331] The first three coupling holes 119a coupled to the cover coupling member 149a can be arranged circularly at an angle of about 120 ° around the center of structural frame 110. In addition, the three second coupling members 119b coupled to the discharge cover coupling member 219b can be arranged circularly at an angle of about 120 ° around the center of structural frame 110. In addition, end insertion parts 119c can be arranged circularly in an angle of about 120 ° around the center of structural frame 110.
[0332] [00332] Thus, the second coupling holes 119b and the terminal insertion parts 119c can be arranged in a space between the first coupling holes 119a. In addition, the first coupling holes 119a and end insertion parts 119c can be arranged circularly in positions that rotate at an angle of about 60 °, and the second coupling holes 119b can be arranged between the first coupling hole coupling 119a and the terminal insertion part 119c.
[0333] [00333] As described above, the first coupling holes 119a, the second coupling holes 119b and the terminal insertion parts 119c can be arranged successively on the structural frame flange 112 in the circumferential direction. Thus, the overall balance of the structural frame flange 112 can be maintained, and stress that occurs when structural frame 110 is mounted or a load that occurs when the compressor operates can be transmitted uniformly to maintain a stable state.
[0334] [00334] Fig. 31 is a cross-sectional view taken along line XXXI-XXXI 'of Fig. 1. As shown in the figure, the six stator cores 141a can be arranged in a circular fashion in the same range outside the body structural frame 111. In addition, the stator cores 141a can be spaced in the same range as each other. For example, stator cores 141a can be arranged circularly at an angle of 60 ° around a center of motor assembly 140.
[0335] [00335] The cover coupling member 149a connecting the structural frame 110 to the stator cover 300 may be arranged in a space between the stator cores 141a. Thus, the three cover coupling members 149a can extend to traverse the three spaces of the spaces defined by the six stator cores 141a.
[0336] [00336] The end insertion parts 119c can be provided in the structural frame 110 in positions corresponding to the spaces between the rest of the three stator cores 141a, except for the space between the stator cores 141a in which the cover coupling member 149a is located. willing. That is, the terminal insertion parts 119c can be arranged in a circular fashion to continue the cover coupling member 149a with the stator core 141a between them.
[0337] [00337] Fig. 32 is a cross-sectional view taken along line XXXII-XXXII 'in Fig. 1. Fig. 33 is a cross-sectional view taken along line XXXIII-XXXIII' in Fig. 1 Fig. 34 is a cross-sectional view taken along line XXXIV-XXXIV 'in Fig. 1.
[0338] [00338] As illustrated in the figures, the cover coupling member 149a can be coupled to the stator cover 300, and the rear cover 170 can be coupled to the stator cover 300 by the rear cover coupling member 176. The stator cover 300 can be configured to support resonant springs 176a and 176b.
[0339] [00339] The third coupling holes 311, to which the cover coupling member 149a can be attached, can be arranged circularly at an angle of about 120 ° around the center of the stator cover 300. The part of leg coupling 175 of the rear cover 170 can be arranged in a space between the cover coupling members 149a. The rear cover coupling member 176 which passes through the leg coupling part 175 can be coupled.
[0340] [00340] The cover coupling member 149a and the rear cover coupling member 176 can be arranged circularly at an angle of about 60 °. Thus, the cover coupling member 149a and the rear cover coupling member 176 can be alternately coupled in succession along the circumference of the stator cover 300.
[0341] [00341] The pair of resonant springs 176a and 176b can be arranged between the coupling legs 174 and all six resonant springs 176a and 176b can be arranged in a circular manner. Thus, the coupling leg 174 can extend to a space between the resonant springs 176a and 176b.
[0342] [00342] Furthermore, the support 400 can be provided in the internal space of the rear cover 170, and the counterweight 179 can be provided in the internal surface of the support 400. The three weight holes 179 and three second front holes 179c can be defined in counterweight 179 and be arranged in a circular fashion at the same interval around the center of the support 400. In addition, the support coupling member 460 can be coupled to each of the weight holes 179a, and the counterweight 179 can be mounted on the support 400 and simultaneously coupled to the magnetic structural frame 110 and piston 130.
[0343] [00343] Thus, the counterweight 179, the magnetic structural frame 110 and the piston 130, which are coupled to the support 400, in addition to the support 400 can be coupled stably in the same range to maintain the weight balance. In addition, stress that occurs when the support coupling member 460 is coupled and a load that occurs when the compressor 10 operates can be dispersed evenly to maintain balance in general.
[0344] [00344] The rear end of the first resonant spring 176a and the front end of the second resonant spring 176b can be supported by the spring support part 440 that extends out of support 400. The spring support part 440 can extend to pass through the space between the coupling legs 174 within the rear cover 170. In addition, the three spring support parts 440 can be arranged in a circular fashion in the same interval to evenly spread the load transmitted by the resonant springs 176a and 176b . Thus, a lateral force generated during the operation of the compressor 10 can be suppressed to a maximum.
[0345] [00345] Fig. 35 is a cross-sectional view taken along line XXXV-XXXV 'in Fig. 1. Fig. 36 is a cross-sectional view taken along line XXXVI-XXXVI' in Fig. 1 Fig. 37 is a cross-sectional view taken along line XXXVIl-XXXVIl 'in Fig. 1.
[0346] [00346] As illustrated in the figures, the second resonant spring 176b can be supported by the cover side accommodation part 177. The cover side accommodation part 177 can project out of the cover body 171 and extend from three points spaced in the same interval as each other to steadily support the second resonant spring 176b.
[0347] [00347] Coupling legs 174 can also be folded forward from three points and the first plugs 102b can be arranged in positions corresponding to coupling legs 174. The first plugs 102b can be arranged at three points which are spaced at the same interval from each other with respect to the center of the housing 101.
[0348] [00348] The rear cover coupling member 176 may be disposed between the cover side accommodation parts 177 on which the second resonant spring 176b is arranged. Thus, the rear cover coupling member 176 can be coupled in one position, except for points where a load is applied by the second resonant spring 176b and thus the stress that occurs when mounted and the load that occurs when the compressor operates can maintained uniformly along the circumference of the rear cover 170.
[0349] [00349] The recess part 171a can be defined on the inner surface of the rear cover 170 and a suction induction tube 178 can be provided in a center of the recess part 171a. The suction induction tube 178 can be arranged or provided in a center of the recess part 171a, that is, a center of the housing 101. In addition, the recess part 171a can partially extend towards the resonant springs 176a and 176b . In addition, three portions of the recess part 171a may extend towards the resonant springs 176a and 176b.
[0350] [00350] The first support device 500 can be coupled to the rear surface of the rear cover 170 by the first spring coupling member 540. The first spring coupling member 540 can space the first support device 500 of the rear cover 170 in one predetermined distance. The first support device 500 can be formed by the first disc spring 510 including the plurality of spiral connection parts 519 to reduce vibration and noise that occur during the operation of the compressor 10.
[0351] [00351] Fig. 38 is a cross-sectional view illustrating a state in which a refrigerant flows into the compressor according to a modality. As illustrated in the figure, a flow of refrigerant in the linear compressor 10 according to an embodiment will be described. The refrigerant sucked into housing 101 via suction pipe 104 can be introduced into piston 130 via suction silencer 150. Piston 130 exerts a reciprocal movement in the axial direction by driving the engine assembly 140.
[0352] [00352] When the suction valve 135 coupled to the front side of the piston 130 is open, the refrigerant can be introduced into the compression space P and then be compressed. When the discharge valve 161 is open, the compressed refrigerant can be introduced into the discharge space of the discharge cover 200.
[0353] [00353] The refrigerant introduced in the discharge space can flow from the first part of space 210a to the second part of space 230a within the discharge cover 200, and the refrigerant within the second part of space 230a can be introduced in the third part of space 250a through connecting pipe 260. The refrigerant within the third part of space 250a can be discharged from the discharge cover 200 through loop pipe 262 and then discharged outside the linear compressor 10 through the discharge pipe 105.
[0354] [00354] A linear compressor according to modalities disclosed in this document can have the following advantages.
[0355] [00355] According to modalities disclosed in this document, each of the first and second support devices, the discharge cover, the support, the stator cover and the rear cover cover, which are provided in the cylindrical housing to form the main body of the compressor, can be supported and coupled at three points. Thus, when the components are coupled together, the components can be coupled at the same interval to prevent stress from being partially concentrated when coupled.
[0356] [00356] Additionally, to realize the coupling structure described above, each of the components can be coupled at the three points with the same distance between them in the same coupling structure. Thus, the components can be symmetrical and harmonic in their general shape in relation to each other to achieve balance in the total weight. Therefore, the balance of the main body of the compressor can be maintained even when the compressor is activated and, thus, the occurrence of noise and vibration can be minimized.
[0357] [00357] In addition, the plurality of coupling members coupled to the support and stator cover can be arranged in a circular fashion in the same interval to prevent the coupling members from interfering with each other, thereby improving workability and assembly productivity. In addition, an additional structure to avoid interference can be omitted to create a compact structure. More particularly, since the support structures of the resonant springs, as well as the plurality of coupling members, are arranged at a predetermined distance in the circumferential direction of the support and stator cover, the total space of the support and stator cover it can be provided as the coupling structure to provide the most compact and balanced coupling structure.
[0358] [00358] Furthermore, since the resonant springs are arranged in a circular shape around the axial direction of the compressor, the compressor can be reduced in length while maintaining its rigidity using the plurality of resonant springs for make the compressor more compact. The resonant springs can be arranged in a circular fashion at the same interval at the three points, and the pair of resonant springs can be provided at each point to suppress lateral force while maintaining adequate resonance stiffness, thereby improving mode, reliability and operating stability.
[0359] [00359] Modalities disclosed in this document provide a linear compressor that is capable of being improved in stability and reliability of operation by maintaining a balance through coupling and support structures at three points of components of a main body inside the compressor with a cylindrical shape. Modalities disclosed in this document also provide a linear compressor in which a plurality of resonant springs is arranged in a circular shape to make the compressor with a compact size. Modalities disclosed in this document also provide additionally a linear compressor in which a plurality of resonant springs is arranged in a circular manner in the same interval to minimize lateral force.
[0360] [00360] Modalities disclosed in this document additionally provide a linear compressor in which, when components of a main body inside a housing are assembled, coupling members are arranged in a circular manner to prevent the components from interfering with each other, thereby improving productivity and workability.
[0361] [00361] Modalities disclosed in this document provide a linear compressor that can include a casing with a cylindrical shape; a casing cover that covers both open ends of the casing; a cylinder accommodated in the housing and defining a compression space for a refrigerant; a piston that exercises reciprocal movement inside the cylinder in an axial direction to compress the refrigerant within the compression space; an engine mount that includes an engine that powers the piston and a stator cover that supports the engine; and resonant springs accommodated in the stator cover and support the piston to allow the piston to perform a resonant movement. The resonant springs can be arranged in a circular manner at three points with the same gap around a center in an axial direction. A pair of resonant springs can be arranged in parallel at each of the three points.
[0362] [00362] The linear compressor may additionally include a rear cover coupled to the stator cover on one rear side of the stator cover and which supports the other end of each of the resonant springs. The rear cover may include a cover body arranged or provided on the rear side of the stator cover, and three coupling legs bent from one edge of the cover body to pass through a space between the resonant springs and extend into the stator cover. A rear cover coupling member that passes through the coupling legs and is coupled to the stator cover for coupling the coupling legs to the stator cover can be arranged or provided at one end of each coupling leg.
[0363] [00363] The linear compressor can additionally include a structural frame that can be provided in the housing and on which the cylinder can be mounted, the structural frame being coupled to the motor assembly. Three cover coupling members that connect the structural frame to the stator cover can be provided, and the cover coupling members can be arranged in a circular manner at three points with the same gap around the center in the axial direction. The rear cover coupling member can be coupled between stator cover cover coupling members. The cover coupling members can traverse spaces between the plurality of stator cores that define the exterior of the motor assembly to extend into the structural frame.
[0364] [00364] A stator cover circumference can include a first circumferential part or portion that extends from a position corresponding to each of the resonant springs to cover a lower end of the resonant spring and a second circumferential part or portion that extends from a position corresponding to each of the coupling legs between the first circumferential parts at a height less than that of each of the first circumferential parts so that a lower end of the coupling leg is exposed. A cover side accommodation part or accommodation that extends outwardly between the coupling legs and supports the other end of each of the resonant springs may be arranged or provided in the cover body. Three cover side accommodation parts can be provided and arranged in a circular manner at the same interval around the center in the axial direction.
[0365] [00365] A first support device or support with a disc spring shape, which connects the cover body to the enclosure cover, can be arranged or provided in the cover body, the first support device can be fixed to and mounted on the rear cover by the rear cover coupling members which can be arranged circularly in the same gap around the center in the axial direction, and three rear cover coupling members can be provided between the cover side accommodation parts .
[0366] [00366] A support can be arranged or provided inside the rear cover, and three parts of spring support that extend outwards from positions that are arranged in a circular way in the same interval around the center in the axial direction can be arranged or provided on a circumference of the support to support a rear end of the first resonant spring and a front end of the second resonant spring.
[0367] [00367] A discharge cover that provides at least one space in which the discharged refrigerant can be temporarily accommodated can be arranged or provided in the structural frame, the discharge cover can be fixed and mounted by the discharge cover coupling member coupled to the structural frame, and the three discharge cover coupling members can be arranged circularly in the same gap around the center in the axial direction to pass through the discharge cover. A second support device or support with a disc spring shape, which connects the discharge cover to the enclosure cover, can be arranged or provided on the discharge cover. The second support device can be fixed to and mounted on an internal surface of the enclosure by three second support device coupling members that can be arranged in a circular manner at the same interval around the center in the axial direction.
[0368] [00368] A part or portion of spring coupling projecting inward and to which the second support device coupling member can be coupled to mount the second support device on it can be arranged or provided on the internal surface of the housing, and three spring coupling parts can be arranged in a circular fashion in the same gap around the center in the axial direction.
[0369] [00369] A terminal insertion part or portion, in which a terminal part or portion that provides power for the motor assembly can be inserted, can be arranged or provided in the structural frame. Three terminal insertion parts or portions can be arranged circularly in the same interval around the center in the axial direction.
[0370] [00370] Modalities disclosed in this document provide a linear compressor that can include a casing with a cylindrical shape; a structural frame that is provided in the housing and on which a cylinder that accommodates a piston that compresses a refrigerant can be mounted; a discharge cover that can be mounted on one side of the structural frame and in which the compressed refrigerant can be temporarily housed; an engine assembly mounted on the structural frame and including an engine that provides power to the piston and a stator cover that supports the engine; a plurality of resonant springs accommodated in the stator cover and which support the piston to allow the piston to perform a resonant movement; and a rear cover coupled to the stator cover to fix the resonant springs. Each of the structural frames, the discharge cover, the stator cover and the rear cover can include a coupling member for coupling at three points, and the three points can be arranged in a circular fashion at the same interval around the center in the axial direction.
[0371] [00371] Modalities disclosed in this document also provide a linear compressor that can include a casing with a cylindrical shape; a casing cover that covers both open ends of the casing; a structural frame that is provided in the housing and on which a cylinder that houses a piston that compresses a refrigerant can be mounted; an engine mount mounted on the structural frame and including an engine that powers the piston and a stator cover that supports the engine; a plurality of resonant springs accommodated on the stator cover and arranged at three points that can be arranged circularly around a center in the axial direction to support the piston, so that a resonant movement of the piston can be performed; and a rear cover coupled to the stator cover to fix the resonant springs. The structural frame and stator cover can be supported at three points by three cover coupling members. The cover coupling members that connect the stator cover to the structural frame can be arranged in the same first extension line as the resonant springs, and the cover coupling members that couple the stator cover to the rear cover at three points can be arranged. be arranged on a second extension line that rotates at a predefined or predetermined angle from the first extension line.
[0372] [00372] A first disc spring that resiliently supports the rear cover to the enclosure cover can be mounted on the rear cover, and the first disc spring can be supported on the enclosure cover at three points by the first three coupling members. support device. The first support device coupling members can be arranged or provided on the second extension line.
[0373] [00373] A second disc spring that elastically supports the discharge cover inside the enclosure can be mounted on the discharge cover, and the second disc spring can be supported inside the enclosure at three points for three second coupling members support device. The second support device coupling members can be arranged or provided on the first extension line.
[0374] [00374] The details of one or more modalities are set out in the attached figures and in the specification. Other characteristics will be apparent from the description and figures and from the claims.
[0375] [00375] Any reference in this specification to "a modality", "a modality", "exemplary modality", etc., means that a particular feature, structure or feature described in connection with the modality is included in at least one modality . The appearances of such phrases in various places in the specification are not necessarily all referring to the same modality. In addition, when a particular feature, structure or feature is described in connection with any modality, it is understood that it is within the competence of one skilled in the art to make such feature, structure or feature in connection with other of the modalities.
[0376] [00376] Although modalities have been described with reference to a number of illustrative modalities of them, it must be understood that countless other modifications and modalities that will be covered by those versed in the technique will be within the spirit and scope of the principles of this disclosure. More particularly, several variations and modifications are possible in the parts and / or arrangements of the arrangement of the components of the subject combination arrangement within the scope of the disclosure, figures and claims attached. In addition to variations and modifications to the parts and / or arrangements of the components, alternative uses will also be evident for those skilled in the art.

权利要求:
Claims (16)
[0001]
Linear compressor, characterized by the fact that it comprises: a casing with a cylindrical shape; a casing cover that covers both open ends of the casing; a cylinder accommodated in the housing and defining a compression space for a refrigerant; a piston that exercises reciprocal movement within the cylinder in an axial direction to compress the refrigerant within the compression space; an engine mount that includes an engine that provides power to the piston and a stator cover that supports the engine; and resonant springs accommodated in the stator cover that support the piston to allow the piston to perform a resonant movement, in which the resonant springs are arranged in a circular manner at a plurality of points having the same interval between them around a compressor center linear in an axial direction.
[0002]
Linear compressor, according to claim 1, characterized by the fact that the resonant springs include a pair of resonant springs provided in parallel at each of the three points.
[0003]
Linear compressor according to claim 1, characterized in that it additionally includes a rear cover coupled to the stator cover on a rear side of the stator cover that supports a first end of each of the resonant springs, in which the rear cover includes: a cover body provided on the rear side of the stator cover; and three coupling legs bent from one edge of the cover body to pass through a space between the resonant springs and extend to the stator cover.
[0004]
Linear compressor, according to claim 3, characterized in that a rear cover coupling member that passes through the coupling legs and is coupled to the stator cover to couple the coupling legs to the stator cover is provided in a end of each coupling leg.
[0005]
Linear compressor, according to claim 4, characterized by the fact that it additionally includes a structural frame which is provided in the housing and on which the cylinder is mounted, the structural frame being coupled to the motor assembly, in which three coupling members cover plates connecting the structural frame to the stator cover are provided, and the cover coupling members are arranged in a circular fashion at three points having the same gap around the center in the axial direction.
[0006]
Linear compressor, according to claim 5, characterized by the fact that the rear cover coupling member is coupled between stator cover cover coupling members.
[0007]
Linear compressor, according to claim 5, characterized by the fact that the cover coupling members cross spaces between the plurality of stator cores that define an exterior of the motor assembly to extend up to the structural frame.
[0008]
Linear compressor, according to claim 5, characterized by the fact that a circumference of the stator cover includes: a first circumferential portion extending from a position corresponding to each of the resonant springs to cover a lower end of the resonant springs; and a second circumferential portion extending from a position corresponding to each coupling leg between the first circumferential portion at a height less than a height from each of the first circumferential portions, so that a lower end of each of the coupling legs is exposed.
[0009]
Linear compressor according to claim 3, characterized in that a cover-side accommodation portion that extends out between the coupling legs and supports a second end of each of the resonant springs is provided in the cover body .
[0010]
Linear compressor according to claim 9, characterized by the fact that three portions of accommodation on the side of the cover are provided and arranged in a circular manner in the same interval around the center in the axial direction.
[0011]
Linear compressor, according to claim 9, characterized by the fact that a first support including a disc spring, which connects the cover body to the housing cover, is provided in the cover body, the first support is fixed and mounted on the rear cover by the rear cover coupling members, which are arranged in a circular manner in the same interval around the center in the axial direction, and three rear cover coupling members are provided between the cover side accommodation portions.
[0012]
Linear compressor, according to claim 11, characterized by the fact that a support is provided inside the rear cover, and three spring support portions that extend outwards from positions that are arranged in a circular way in the same interval around the center in the axial direction they are provided in a circumference of the support to support a rear end of a first resonant spring of the resonant springs and a front end of a second resonant spring.
[0013]
Linear compressor, according to claim 11, characterized by the fact that a discharge cover that provides at least one space in which the discharged refrigerant is temporarily accommodated is provided in the structural frame, the discharge cover is fixed and assembled by three members discharge cover coupling coupled to the structural frame, and the three discharge cover coupling members are arranged circularly in the same gap around the center in the axial direction to pass through the discharge cover.
[0014]
Linear compressor according to claim 13, characterized in that a second support including a disc spring, which connects the discharge cover to the housing cover, is provided in the discharge cover, and the second support is fixed and mounted on an internal surface of the enclosure for three seconds support coupling members that are arranged in a circular manner in the same interval around the center in the axial direction.
[0015]
Linear compressor, according to claim 14, characterized by the fact that three spring coupling portions projecting inward and to which the second support coupling members are coupled to mount the second support on them are provided on the inner surface of the housing, and the three spring coupling portions are arranged in a circular fashion at the same interval around the center in the axial direction.
[0016]
Linear compressor, according to claim 5, characterized by the fact that a terminal insertion portion, in which a terminal that supplies power to the motor assembly is inserted, is provided in the structural frame, and three terminal insertion portions are arranged in circular shape in the same interval around the center in the axial direction.

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法律状态:
2018-01-09| B12F| Other appeals [chapter 12.6 patent gazette]|

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2020-05-26| B150| Others concerning applications: publication cancelled [chapter 15.30 patent gazette]|Free format text: ANULADA A PUBLICACAO CODIGO 15.21 NA RPI NO 2443 DE 31/10/2017 POR TER SIDO INDEVIDA. 15.21 ANULADO PARA FINS DE PROSSEGUIMENTO DO FLUXO PROCESSUAL DO PEDIDO, EM ATENDIMENTO AO PARECER RECURSAL QUE REFORMOU A DECISAO EM REFERENCIA |

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2020-06-23| B03A| Publication of a patent application or of a certificate of addition of invention [chapter 3.1 patent gazette]|

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2021-11-09| B06W| Patent application suspended after preliminary examination (for patents with searches from other patent authorities) [chapter 6.23 patent gazette]|

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申请号 | 申请日 | 专利标题

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KR1020160047847A|KR102238332B1|2016-04-19|2016-04-19|Linear compressor|

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