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公开(公告)号：US20170248353A1
公开(公告)日：2017-08-31
申请号：US15212416
申请日：2016-07-18
Applicant: LG ELECTRONICS INC.
Inventor： Jingyu LEE , Jeonghyeon PARK , Yeongcheol KO
CPC classification number: F25B31/026 , F04C18/356 , F04C23/008 , F04C28/26 , F04C29/0085 , F04C2210/26 , F04C2240/40 , F04C2240/806 , F04C2270/58 , F25B13/00 , F25B41/04 , F25B49/022 , F25B2600/2501
Abstract: A high pressure compressor and a refrigerating cycle device including a high pressure compressor are provided. The high pressure compressor may include a casing in which refrigerant discharged from a compression unit or device is filled into an inner space provided with a drive motor; a suction pipe directly connected to a suction port of the compression unit; a discharge pipe in communication with an inner space of the casing; a first valve provided at the discharge pipe or the suction pipe to control a flow the discharged refrigerant from a high pressure side to a low pressure side when the drive motor is stopped; a bypass pipe connected between a discharge side and a suction side based on the compression device; and a second valve provided at the bypass pipe to move refrigerant at the high pressure side to the low pressure side through the bypass pipe, thereby allowing a differential pressure operation to continue when the compressor is stopped, to enhance energy efficiency as well as allowing a suction pressure and a discharge pressure to rapidly reach an equilibrium pressure during restart so as to efficiently perform the restart.
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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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Patent Agency Ranking
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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公开(公告)号：US20170248356A1
公开(公告)日：2017-08-31
申请号：US15345561
申请日：2016-11-08
Applicant: LG ELECTRONICS INC.
Inventor： Jingyu LEE , Jeonghyeon PARK , Yeongcheol KO
Abstract: A high pressure compressor according to the present disclosure and a refrigerating cycle device to which the high pressure compressor is applied may include a casing having a sealed inner space; drive motor provided in the inner space of the casing; a compression unit provided in the inner space of the casing, and provided with a compression space for compressing refrigerant, and provided with a suction port for guiding refrigerant into the compression space, and provided with a discharge port for guiding refrigerant compressed in the compression space into the inner space of the casing a discharge valve provided in the compression unit to selectively open or close the discharge port according to a difference between a pressure of the inner space of the casing and a pressure of the compression space of the compression unit; a first valve configured to suppress refrigerant discharged from the inner space of the casing from flowing backward into the inner space of the casing; a bypass pipe connected between a discharge side and a suction side of the compression unit based on the compression unit; and a second valve provided at the bypass pipe to selectively open or close the bypass pipe.
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公开(公告)号：US20210381511A1
公开(公告)日：2021-12-09
申请号：US17313107
申请日：2021-05-06
Applicant: LG ELECTRONICS INC.
Inventor： Jingyu LEE , Sangmin Na
IPC: F04C18/344 , F04C15/00
Abstract: A rotary compressor is provided that may include a roller slidingly coupled to an eccentric portion of a rotational shaft so as to be moved along an inner circumferential surface of a cylinder by the rotational shaft, and a vane slidingly coupled to the cylinder so as to divide the compression space into a plurality of compression chambers. An oil supply groove may be formed on an outer circumferential surface of the eccentric portion or an inner circumferential surface of the roller that faces the outer circumferential surface of the eccentric portion, and a depth of the oil supply groove may decrease as a distance in a circumferential direction from the second oil supply hole increases. Accordingly, an amount of oil supplied between the eccentric portion and the roller may be increased to thereby reduce friction loss.
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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：US20200370549A1
公开(公告)日：2020-11-26
申请号：US16838227
申请日：2020-04-02
Applicant: LG ELECTRONICS INC.
Inventor： Jingyu LEE , Shin KIM , Kyuchul HAN
IPC: F04C2/00
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 of the roller; 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. When an imaginary line passing through an axial center of the rotary shaft and a hinge center of the vane is a first center line, and a radial center line of the vane slot passing through the hinge center of the vane is a second center line, the vane slot is disposed such that the second center line is intersected by a predetermined tilting angle with respect to the first center line. With this structure, a roller reaction force is canceled to suppress an increase in side pressure or side wear between a vane and a vane slot into which the vane is inserted.
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