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公开(公告)号:US20200378386A1
公开(公告)日:2020-12-03
申请号:US16838261
申请日:2020-04-02
Applicant: LG ELECTRONICS INC.
Inventor: Jingyu LEE , Sangmin NA , Wonbae PARK
IPC: F04C29/02 , F04C18/356 , F04C18/324 , F01C21/08
Abstract: A rotary compressor may include a rotary shaft; a plurality of plates that supports the rotary shaft; a cylinder provided between the plurality of plates to define a compression space, and provided with a vane slot; a roller slidably coupled to the rotary shaft inside of the cylinder, and having a hinge groove on an outer circumferential surface thereof; and a vane, a first end of which is slidably coupled to the vane slot of the cylinder, and a second end of which is rotatably coupled to the hinge groove of the roller. At least one of first and second axial end surfaces of the roller facing the plurality of plates is provided with a dimple portion having a predetermined depth. With this structure, contact surfaces between the roller and the plate may be prevented from being in close contact with each other, preventing the roller or the plate from being damaged or a performance of the compressor from deteriorating due to friction loss, thereby improving reliability and performance of the compressor.
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公开(公告)号:US20220412358A1
公开(公告)日:2022-12-29
申请号:US17722526
申请日:2022-04-18
Applicant: LG ELECTRONICS INC.
Inventor: Sangmin NA , Jingyu LEE
IPC: F04C18/356
Abstract: A rotary compressor is provided for which a vane slot is formed in each cylinder, a suction port is disposed at one side of the vane slot in a circumferential direction with a partition wall interposed therebetween, and at least one elastic portion is formed in a penetrated or recessed manner at at least one circumferential side surface of the partition wall or between circumferential side surfaces. Accordingly, an elastic strain of the partition wall may increase to reduce friction loss between the vane slot and a vane, a sealing distance may be secured between axial side surfaces of the partition wall to prevent refrigerant leakage between the vane slot and the suction port, an amount of oil or refrigerant stored between the vane and the vane slot may be increased by virtue of the at least one elastic portion formed on an inner surface of the vane slot defining the partition wall, thereby improving lubricity.
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公开(公告)号:US20210215397A1
公开(公告)日:2021-07-15
申请号:US17060646
申请日:2020-10-01
Applicant: LG Electronics Inc.
Inventor: Jingyu LEE , Sangmin NA
Abstract: A rotary compressor includes at least one cylinder in which a discharge guide groove is disposed at one side of a vane slot; a roller orbitably provided in the cylinder, and disposed with a hinge groove on an outer circumferential surface thereof; a vane in which one end portion thereof is rotatably inserted into the hinge groove of the roller, and the other end portion thereof is slidably inserted into the vane slot of the cylinder; and a plurality of bearing plates that seals both side surfaces of the cylinder, and at least one side of which is disposed with a discharge port to communicate with the discharge guide groove. The discharge port communicates with a refrigerant residual space defined between the vane slot and the discharge guide groove. Refrigerant in the refrigerant residual space may be discharged even after the roller passes through the discharge guide groove.
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