Rotary compressor

专利摘要:
In the present invention, the hermetic rotary compressor includes a power mechanism 104 for generating a rotational force by the power supplied to the inside of the sealed container 101, and a compressor mechanism 112 for compressing the refrigerant gas by the rotational force of the power mechanism 104. Compressor body consisting of; A refrigerant suction pipe (115) installed at an outer side of the compressor main body such that one end portion communicates with the compressor sphere (112) and designed to have an optimum length so that refrigerant gas having an optimal pressure pulsation can be supplied to the compressor sphere (112); In this case, the compression efficiency due to overcompression of the refrigerant gas during operation of the compressor is increased, whereby the cooling capacity of the cooling device is improved.
公开号:KR20040044029A
申请号:KR1020020072526
申请日:2002-11-20
公开日:2004-05-27
发明作者:박기원
申请人:엘지전자 주식회사；
IPC主号:

专利说明:

Hermetic rotary compressor {ROTARY COMPRESSOR}
[7] The present invention relates to a hermetic rotary compressor, and more particularly, to a hermetic rotary compressor for optimizing the pressure pulsation of the refrigerant suction unit to improve the efficiency of the compressor.
[8] A sealed rotary compressor used for refrigerant compression in a refrigeration cycle device of an electronic device such as an air conditioner is illustrated in FIG. 1, which will be briefly described as follows.
[9] As shown, the conventional hermetic rotary compressor is provided with an electric mechanism part 4 composed of a rotor 2 and a stator 3 inside the hermetic container 1, and at the center of the rotor 2. The rotating shaft 5 is press-fitted to the shaft hole 2a formed in the vertical direction.
[10] In addition, an eccentric portion 6 is integrally formed at the lower end of the rotary shaft 5, and a rolling piston 7 is inserted outside the eccentric portion 6, and the rolling piston 7 rotates. A compression mechanism 12 including a cylinder 9 and upper and lower bearings 10 and 11 is provided to form a compression space 8 for compressing a refrigerant gas.
[11] In addition, a valve assembly 15 is provided at the outlet side of the discharge hole 10a formed in the upper bearing 10, and a silencer 16 is provided at the top of the valve assembly 15 to reduce discharge noise. have.
[12] An accumulator 17 is provided outside the sealed container 1 to prevent the inflow of liquid refrigerant, and the accumulator 17 and the suction port 9a of the cylinder 9 are refrigerant gas. The refrigerant suction pipe 18 is installed so that the gas can flow into the compression space inside the cylinder 9.
[13] In addition, a discharge tube 19 for discharging the high-pressure refrigerant gas compressed by the compression mechanism 12 to the outside is provided on the upper surface of the sealed container 1.
[14] When power is applied in the conventional hermetic rotary compressor configured as described above, the rotor 2 of the electric mechanism unit 4 rotates, and the rotary shaft 5 press-fitted to the rotor 2 rotates. .
[15] As described above, the eccentric portion 5a formed at the lower end of the rotary shaft 5 and the rolling piston 7 coupled to the eccentric portion 5a rotate as the rotary shaft 5 rotates, and the cylinder 9 is rotated. The refrigerant gas of low temperature and low pressure sucked into the compression space 8 through the suction port 9a of the gas is compressed into a refrigerant gas of high temperature and high pressure.
[16] In addition, the refrigerant gas compressed as described above is discharged through the valve assembly 15 to be discharged into the sealed container 1 through the through hole 16a of the muffler 16, and the high temperature and high pressure refrigerant discharged as described above. The gas is discharged to the outside through the discharge pipe 18 through the gap between the rotor 2 and the stator 3.
[17] Meanwhile, the refrigerant gas circulated through the accumulator 17 is separated into a liquid state and a gas state, and the gaseous refrigerant is supplied back to the compression space 8 of the cylinder 9 through the refrigerant suction pipe 18. Compression is achieved.
[18] By the way, in the conventional hermetic rotary compressor configured as described above, the refrigerant suction part has a limitation in improving the efficiency of the compressor because the structure of the refrigerant suction part is not considered for the pressure pulsation which greatly affects the compression efficiency of the compressor. Had
[19] The object of the present invention devised in view of the above problems is to provide a hermetic rotary compressor suitable for improving the efficiency of the compressor by designing the suction part structure of the compressor in an optimal state in consideration of pressure pulsation.
[1] 1 is a longitudinal sectional view showing a structure of a conventional hermetic rotary compressor.
[2] Figure 2 is a longitudinal sectional view showing the hermetic rotary compressor of the present invention.
[3] Figure 3 is an experimental graph of the relationship between the pressure pulsation and cooling power for each frequency.
[4] Explanation of symbols on the main parts of the drawings
[5] 101: airtight container 104: electric mechanism part
[6] 112: compressor section 115: refrigerant suction pipe
[20] In order to achieve the object of the present invention as described above
[21] With sealed containers,
[22] An electric mechanism unit generating a rotational force by the power supplied and installed inside the sealed container;
[23] A compression mechanism unit for compressing the refrigerant gas by the rotational force of the electric mechanism unit;
[24] A refrigerant suction pipe installed at an outer side of the compressor main body so that one end portion communicates with the compressor sphere, and designed to have an optimum length so that refrigerant gas having an optimal pressure pulsation can be supplied to the compressor sphere; Provided is a hermetically sealed rotary compressor, comprising a configuration.
[25] Hereinafter, the present invention will be described in detail with reference to an embodiment of the enclosed rotary compressor configured as described above with reference to the accompanying drawings.
[26] Figure 2 is a longitudinal sectional view showing the hermetic rotary compressor of the present invention, as shown, the basic structure of the hermetic rotary compressor is the same as in the prior art.
[27] That is, the shaft mechanism 102a is formed in the hermetically sealed container 101 including the rotor 102 and the stator 103, and is formed in a vertical direction in the center of the rotor 102. The rotary shaft 105 is press-fitted and fixed, an eccentric portion 106 is integrally formed at the lower end of the rotary shaft 105, and a rolling piston 107 is inserted outside the eccentric portion 106.
[28] In addition, a compression mechanism 112 including a cylinder 109 and upper and lower bearings 110 and 111 is formed so that the rolling piston 107 rotates to form a compression space 108 for compressing the refrigerant gas. In the upper bearing 110, a discharge hole 110a is formed to discharge the compressed gas discharged from the compression space 108 to the outside of the compression space 108, and the upper portion of the discharge hole 110a The valve assembly 113 and the silencer 114 for reducing the discharge noise are provided.
[29] Here, in the present invention, one side of the cylinder 109 is formed with an inlet 109a communicating with the compression space 108, the inlet 109a to supply the refrigerant gas to the inside of the compression space 108 and In addition, a refrigerant suction pipe 115 having a predetermined length is installed to generate a pressure pulsation in an optimal state.
[30] In the figure, reference numeral 116 denotes a discharge tube for discharging the high-pressure refrigerant gas compressed by the compression mechanism unit 112 to the outside.
[31] As described above, when the rotor 102 of the electric mechanism 104 rotates when the power is applied to the hermetic rotary compressor, the rotary shaft 105 pressed into the rotor 102 rotates. As the rotary shaft 105 rotates, the eccentric portion 105a formed at the lower end of the rotary shaft 105 and the rolling piston 107 coupled to the eccentric portion 105a rotate, and the suction port 109a of the cylinder 109 rotates. The low-temperature low-pressure refrigerant gas sucked into the compression space 108 of the compression mechanism (112) is compressed into a high-temperature, high-pressure refrigerant gas.
[32] The refrigerant gas compressed in the compression space 108 is discharged through the discharge hole 110a and discharged into the sealed container 101 through the through hole 113a of the muffler 113 as described above. The discharged high-temperature high-pressure refrigerant gas is discharged to the outside through the discharge pipe 115 through the gap between the rotor 102 and the stator 103.
[33] On the other hand, the refrigerant gas flowing into the compression space 108 as described above is introduced through the refrigerant suction pipe 115 formed in communication with the suction port (109a), the refrigerant suction pipe 115 in consideration of the pressure pulsation Since the length is designed to be optimal, the wavelengths overlap and flow in, like a kind of beat, so that overcompression of the refrigerant gas occurs in the compression space 108, thereby increasing the compression efficiency by increasing the volumetric efficiency.
[34] 3 is a graph obtained by experimenting the relationship between the pressure pulsation and cooling power (cooling capacity) for each frequency, as shown in this, the resonance occurs at the tube frequency of 60Hz, 120Hz, 180Hz, 240Hz, where the mass flow rate (cold power) is Since the resonance frequency region is very narrow, the increase in cold power is rapidly extinguished beyond the resonance point.
[35] In the graph, when the refrigerant suction pipe is designed to the proper length, the increase in cooling power is smaller than in the 1st and 2nd modes, but in the 3rd mode, the length decreases, so the cooling power is increased without increasing the loss. The effect can be obtained.
[36] As described above in detail, the hermetic rotary compressor of the present invention is designed to optimize the refrigerant suction pipe for introducing the refrigerant gas into the compression space of the cylinder in consideration of the pressure pulsation, and to prevent overcompression of the refrigerant gas during operation of the compressor. There is a synergistic effect of the compression efficiency.

权利要求:
Claims (2)
[1" claim-type="Currently amended] With sealed containers,
An electric mechanism unit generating a rotational force by the power supplied and installed inside the sealed container;
A compression mechanism unit for compressing the refrigerant gas by the rotational force of the electric mechanism unit;
Sealed rotary type is characterized in that it comprises a refrigerant suction pipe is installed on the outer side of the sealed container so that one end is in communication with the compressor sphere is designed to the optimum length so that the refrigerant gas with the optimum pressure pulsation can be supplied to the compressor sphere. compressor.
[2" claim-type="Currently amended] The method of claim 1,
The length of the refrigerant suction pipe is a hermetic rotary compressor, characterized in that the length is designed to cause resonance with 60Hz, 120Hz, 180Hz, 240Hz.

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同族专利:

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引用文献:

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公开号 | 申请日 | 公开日 | 申请人 | 专利标题

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法律状态:
2002-11-20|Application filed by 엘지전자 주식회사

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2002-11-20|Priority to KR1020020072526A

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2004-05-27|Publication of KR20040044029A

优先权:

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申请号 | 申请日 | 专利标题

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KR1020020072526A|KR20040044029A|2002-11-20|2002-11-20|Rotary compressor|