Apparatus for returning oil of accumulator in hermetic compressor

专利摘要:
The present invention relates to an accumulator oil recovery device of a hermetic compressor, the present invention is an accumulator container coupled to the refrigerant pipe is connected to the evaporator, and is formed in the form of a curved pipe, one side of the hermetic container and the compression mechanism is mounted inside A coupling tube coupled to one side of the coupling tube and the other side penetratingly inserted into a bottom surface of the accumulator vessel to guide the refrigerant gas flowing into the accumulator vessel to the compression mechanism, and a large portion of the radius of curvature of the coupling tube; A refrigerant flow tube configured to include an oil flow tubing that communicates the bottom of the accumulator vessel and guides the oil filled in the bottom of the accumulator vessel into the connecting pipe, and the refrigerant flowing through the evaporator is sucked into the compressor port through the accumulator container and the connecting pipe. On the bottom of the accumulator By preventing oil from interfering with the oil flow flowing into the compressor section through the oil flow customs and connecting pipes, the refrigerant and oil flow into the compressor section smoothly, and minimize vibration noise caused by the interference between the refrigerant flow and the oil flow. I would have to.
公开号:KR20020092474A
申请号:KR1020010031108
申请日:2001-06-04
公开日:2002-12-12
发明作者:안병하；이승준；차강욱
申请人:주식회사 엘지이아이；
IPC主号:

专利说明:

Accumulator oil recovery device for hermetic compressors {APPARATUS FOR RETURNING OIL OF ACCUMULATOR IN HERMETIC COMPRESSOR}
[9] The present invention relates to an accumulator oil recovery device of a hermetic compressor, and particularly, an accumulator oil recovery device of an hermetic compressor which allows oil accumulated therein to smoothly flow into the compression mechanism without causing interference with refrigerant gas sucked into the compression mechanism. It is about.
[10] Generally, a compressor is a device that compresses a gas such as a refrigerant. There are various kinds of such compressors, such as a rotary compressor, a reciprocating compressor, a scroll compressor, and the like, according to a method of compressing a gas. Such a compressor constitutes a refrigeration cycle apparatus mounted in a refrigerator or an air conditioner, and the refrigeration cycle apparatus forms a closed system.
[11] The configuration of the hermetic compressors as described above usually includes a hermetically sealed container formed to have a predetermined internal space, an electric machine part mounted inside the hermetically sealed container to generate a driving force, and a compressor mechanism for compressing a refrigerant by receiving a driving force of the electric mechanism part. It is configured to include. In addition, the compressor is a high-pressure system in which the refrigerant is sucked directly into the compression mechanism is compressed and then discharged into the sealed container and at the same time discharged through the discharge pipe coupled to the sealed container, and the refrigerant is first sucked into the sealed container and then the compression mechanism It is classified into a low pressure method which is sucked into and compressed and then discharged through a discharge pipe, and the high pressure compressor includes an accumulator to prevent the liquid refrigerant from being directly sucked into the compression mechanism.
[12] 1 shows an example of a hermetic compressor of a high pressure type. As shown in FIG. 1, the hermetic compressor includes a hermetic container 10 and an electric mechanism 20 mounted inside the hermetic container 10 and the electric motor. The compression mechanism (30) and the compression mechanism (30) for compressing the gas received by the driving force of the mechanism portion 20 and the closed container 10 is connected by the connecting tube of the curved shape so as to be located on the side of the sealed container (10) 30) and an accumulator A for preventing the introduction of the liquid refrigerant.
[13] On the other hand, the accumulator (A) is formed in a cylindrical shape having a predetermined internal space, the accumulator container 50, a portion of the connecting pipe 40 is located in a predetermined length therein, and the accumulator container 50 A refrigerant pipe (60) connected to an evaporator (not shown) on the other side of the accumulator and mounted on the accumulator container (50) so as to be positioned above the end of the connection pipe (40) located inside the accumulator container (50). Screen 70 for filtering the oil and foreign matter mixed in the refrigerant flowing into the accumulator container 50 through the refrigerant pipe 60 and the screen holder 71 for fixing the screen 70 to the inside of the accumulator container 50 It is configured to include.
[14] The connecting pipe 40 has a predetermined length following the horizontal pipe portion 41 having a predetermined straight length and the curved pipe portion 42 and the curved pipe portion 42 that are bent to have a predetermined curvature following the horizontal pipe portion 41. It consists of a vertical pipe portion 43 is formed extending in a straight length of the horizontal pipe portion 41 is coupled to the sealed container 10 side and most of the vertical pipe portion 43 is located inside the accumulator container 50 Done. And an auxiliary fixing member 80 for fixing the vertical pipe portion 43 of the connecting pipe 40 to the accumulator container 50 is coupled to the end of the vertical pipe portion 43 and the bottom side of the accumulator container 50 is coupled. An oil through hole 44 is formed in the vertical pipe part 43 of the connection pipe 40 located at the.
[15] As described above, the operation of the hermetic compressor accumulator is performed by the driving force of the electric mechanism part 20 being transmitted to the compressor mechanism part 30 so that the compressor mechanism part 30 is operated. The refrigerant passing through the evaporator is introduced into the accumulator vessel 50 through the refrigerant pipe 60 by the suction force.
[16] As the refrigerant flowing into the accumulator container 50 passes through the screen 70, foreign substances mixed in the refrigerant and the refrigerant in a liquid state are filtered, and the refrigerant in the gas state passing through the screen 70 passes through the connecting pipe 40. Through the compression mechanism 30 is introduced. Then, the liquid refrigerant filtered in the screen 70 and the oil mixed in the refrigerant flow through the inner circumferential wall of the accumulator vessel 50 and accumulate on the bottom of the accumulator vessel 50 and the bottom surface of the accumulator vessel 50. The refrigerant in the liquid state accumulated in the vaporization is sucked into the compression mechanism part 30 mounted in the sealed container 10 through the connection pipe 40. The refrigerant gas sucked into the compression mechanism unit 30 is compressed and discharged.
[17] And the oil accumulated in the bottom of the accumulator container 50 is introduced into the connecting pipe 40 through the oil through hole 44 formed in the connecting pipe 40 and the oil introduced into the connecting pipe 40 is connected to the connection. The lubricating function is introduced into the compression mechanism 30 through the pipe 40. At this time, in order for the oil filled in the bottom surface of the accumulator container 50 to flow into the connection pipe 40 through the oil through hole 44 of the connection pipe 40, the oil pressure accumulated on the bottom surface of the accumulator container 50 is increased. The pressure inside the connecting pipe 40 must be greater than the pressure of the refrigerant flowing through the connecting pipe 40, since the flow rate of the oil is relatively higher than the flow rate of the oil. Out of the connection pipe (40) side (44).
[18] However, in the accumulator of the conventional hermetic compressor as described above, the accumulator container 50 in the process of the refrigerant is sucked into the compressor sphere 30 through the accumulator A due to the pressure difference due to the periodic volume change of the compressor sphere 30. As the oil filled in the bottom of the accumulator vessel 50 is introduced into the connecting pipe 40 by the periodic constant pressure difference therein, the periodic flow of the oil not only interrupts the flow of the refrigerant, but also the periodic flow excitation pulsation. There was a problem that causes the vibration and noise to occur.
[19] An object of the present invention devised in view of the above point is an accumulator oil recovery device of a hermetic compressor that allows oil that accumulates therein to smoothly flow into the compression mechanism without causing interference with refrigerant gas sucked into the compression mechanism. In providing.
[1] 1 is a cross-sectional view showing an example of a general hermetic compressor,
[2] 2 is a cross-sectional view of the hermetic compressor equipped with the hermetic compressor accumulator oil recovery device of the present invention;
[3] 3 is a cross-sectional view showing an operating state of the hermetic compressor accumulator oil recovery device of the present invention.
[4] ** Explanation of symbols for main parts of drawings **
[5] 10; Hermetically sealed container 20; Electric mechanism part
[6] 30; Compression mechanism section 40; Connector
[7] 50; Accumulator vessel 60; Refrigerant tube
[8] 90; Oil Flow Customs
[20] In order to achieve the object of the present invention as described above, the accumulator container is coupled to the refrigerant pipe connected to the evaporator, and is formed in the shape of a curved pipe, one side of which is coupled to one side of the sealed container in which the electric mechanism part and the compression mechanism part are mounted. In addition, the other side is coupled so as to penetrate through the bottom of the accumulator container, the connecting pipe for guiding the refrigerant gas flowing into the accumulator container to the compression mechanism, and the portion of the curvature radius of the connecting pipe and the accumulator container bottom surface Provided is an accumulator oil recovery device for a hermetic compressor comprising an oil flow customs pipe for guiding oil filled in the bottom surface of the accumulator container into a connecting pipe.
[21] Hereinafter, the hermetic compressor accumulator oil recovery apparatus of the present invention will be described according to the embodiment shown in the accompanying drawings.
[22] Figure 2 shows a hermetic compressor equipped with an example of the hermetic compressor accumulator oil recovery apparatus of the present invention, when described with reference to this, first, the hermetic compressor is driven inside the hermetic container 10 having a predetermined internal space. The mechanism part 20 and the compression mechanism part 30 are provided. And the accumulator (A) is located on the side of the sealed container 10, the sealed container 10 and the accumulator (A) is connected by a connecting pipe 40 formed in the shape of a curved tube. That is, one side of the connection pipe 40 is coupled to one side of the sealed container 10 so as to communicate with the compression mechanism 30 and the other side is coupled to the accumulator (A).
[23] In addition, the accumulator A is formed in a cylindrical shape having a predetermined internal space, and an accumulator container 50 in which a part of the connecting pipe 40 is positioned and coupled to a predetermined length therein, and the accumulator container 50 A refrigerant pipe (60) connected to the evaporator on the other side, and mounted on the accumulator container (50) so as to be positioned above the end of the connection pipe (40) located inside the accumulator container (50). A screen 70 for filtering oil and foreign substances mixed in the refrigerant flowing into the accumulator container 50 through the 60 and a screen holder 71 for fixing the screen 70 to the inside of the accumulator container 50. It is configured by.
[24] The connecting pipe 40 has a predetermined length following the horizontal pipe portion 41 having a predetermined straight length and the curved pipe portion 42 and the curved pipe portion 42 that are bent to have a predetermined curvature following the horizontal pipe portion 41. It consists of a vertical pipe portion 43 is formed extending in a straight length of the horizontal pipe portion 41 is coupled to the sealed container 10 side and most of the vertical pipe portion 43 is located inside the accumulator container 50 Done. An auxiliary fixing member 80 for fixing the vertical tube portion 43 of the connecting tube 40 to the accumulator container 50 is coupled to an end portion of the vertical tube portion 43.
[25] And the oil flow for guiding the oil filled in the bottom surface of the accumulator container 50 to communicate the portion of the large curvature radius of the connector pipe portion 42 and the accumulator container 50 to the inside of the connection pipe 40 Customs 90 is combined. That is, the oil flow customs pipe 90 is formed to have a predetermined length, and one side thereof is coupled to communicate with the inside of the connection pipe 40 at a large radius of curvature of the connection pipe 40, and the other side of the accumulator The bottom surface of the container 50 is coupled to communicate with the inside.
[26] The oil flow customs tube 90 is preferably made of a tubule having a relatively smaller inner diameter than the connecting pipe 40 and formed in a curved shape.
[27] Hereinafter, the operation and effect of the hermetic compressor accumulator oil recovery device of the present invention will be described.
[28] First, when the driving force of the transmission mechanism unit 20 is transmitted to the compression mechanism unit 30 to operate the compression mechanism unit 30, the refrigerant passing through the evaporator by the suction force by the periodic volume change of the compression mechanism unit 30 It flows into the accumulator container 50 through the coolant pipe 60.
[29] As the refrigerant flowing into the accumulator container 50 passes through the screen 23, the foreign matter mixed in the refrigerant and the refrigerant in the liquid state are filtered out, and the refrigerant in the gas state passing through the screen 70 passes through the connection pipe 40. Through the compression mechanism 30 is introduced. Then, the liquid refrigerant filtered in the screen 70 and the oil mixed in the refrigerant flow through the inner circumferential wall of the accumulator vessel 50 and accumulate on the bottom of the accumulator vessel 50 and the bottom surface of the accumulator vessel 50. The refrigerant in the liquid state accumulated in the vaporization is sucked into the compression mechanism part 30 mounted in the sealed container 10 through the connection pipe 40.
[30] Meanwhile, in the process of the refrigerant gas flowing through the connection pipe 40 and being sucked into the compression mechanism 30, as shown in FIG. 3, the inner side of the connection pipe bent part 42, that is, the radius of curvature is shown. The flow rate of the refrigerant gas flowing to this small portion is relatively slow and the flow rate of the refrigerant gas flowing to the portion having a large radius of curvature of the curved portion 42 is relatively large, so that the portion of the curved portion 42 has a small radius of curvature. As we move from to the larger part of the pressure, a smaller pressure gradient is achieved.
[31] Thus, oil accumulated in the bottom surface of the accumulator vessel 50 due to the difference in the radius of curvature of the connecting pipe bent portion 42 and the bottom side of the accumulator vessel 50 is oil flow customs 90 Through the curvature radius of the connector pipe portion 42 is introduced into a large portion flows to the bottom surface of the connector pipe 40 is introduced into the compression mechanism (30). At this time, the oil flowing into the curved pipe portion 42 of the connecting pipe 40 through the oil flow customs pipe 90 is a small radius of curvature of the curved pipe portion 42 does not flow due to the pressure difference, the radius of curvature Since the large portion and the bottom surface of the horizontal pipe part 41 flow, the interference with the refrigerant gas flowing into the connection pipe 40 does not occur, so that the flow of the refrigerant gas is smooth and the flow of the oil is also smooth. It is smooth.
[32] As described above, the accumulator oil recovery device of the hermetic compressor according to the present invention is a refrigerant flow through which the refrigerant passing through the evaporator is sucked into the compressor port through the accumulator vessel and the connecting pipe and the oil flowing into the bottom surface of the accumulator vessel is an oil flow customs tube. And by preventing the interference of the oil flow flowing into the compressor section through the connecting pipe, the refrigerant and oil flows smoothly into the compressor section, and minimizes the vibration noise caused by the interference between the refrigerant flow and the oil flow to reduce the suction flow rate of the refrigerant. In addition to increasing the compression performance due to the increase has the effect of improving the reliability.

权利要求:
Claims (1)
[1" claim-type="Currently amended] The accumulator container is connected to the evaporator and the refrigerant pipe is coupled, and is formed in a curved tube shape so that one side thereof is coupled to one side of the sealed container in which the electric mechanism part and the compression mechanism part are mounted therein, and the other side is inserted into the bottom surface of the accumulator container. A coupling pipe coupled to guide the refrigerant gas flowing into the accumulator vessel to the compression mechanism, and a portion having a large radius of curvature of the coupling tube and a bottom surface of the accumulator vessel to connect oil filled in the bottom of the accumulator vessel. An accumulator oil recovery device for a hermetic compressor comprising an oil flow customs pipe to guide the inside of the pipe.

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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:
2001-06-04|Application filed by 주식회사 엘지이아이

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2001-06-04|Priority to KR1020010031108A

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2002-12-12|Publication of KR20020092474A

优先权:

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申请号 | 申请日 | 专利标题

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KR1020010031108A|KR20020092474A|2001-06-04|2001-06-04|Apparatus for returning oil of accumulator in hermetic compressor|