公开(公告)号：US12110894B2

公开(公告)日：2024-10-08

申请号：US18282011

申请日：2022-03-16

Applicant: LG ELECTRONICS INC.

Inventor： Jinung Shin ,  Joonhong Park ,  Seoungmin Kang

IPC: F04C18/344 ,  F04C18/356 ,  F04C29/02

CPC classification number: F04C29/028 ,  F04C18/3441 ,  F04C18/356 ,  F04C29/023 ,  F04C2240/30 ,  F04C2240/56 ,  F04C2240/603

Abstract: A rotary compressor is provided that may include a casing having an oil storage space; a cylinder; a main bearing and a sub bearing; a rotary shaft; a roller having a vane slot and a back pressure chamber; and at least one vane. An oil supply hole that communicates the back pressure chamber with the oil storage space may pass through the main bearing or the sub bearing, or through the roller. Accordingly, as high-pressure oil is supplied directly to a rear end surface of the vane, it is possible to increase efficiency of the compressor by increasing a back pressure on the vane and suppressing a delay in starting the compressor, and it is also possible to reduce collision noise and wear in the vane and the cylinder by suppressing vibration of the vane.

公开(公告)号：US11971032B2

公开(公告)日：2024-04-30

申请号：US17967094

申请日：2022-10-17

Applicant: LG ELECTRONICS INC.

Inventor： Kiyoul Noh ,  Seokhwan Moon ,  Joonhong Park

IPC: F04C18/344 ,  F04C15/06 ,  F04C29/02

CPC classification number: F04C18/3441 ,  F04C15/064 ,  F04C29/023 ,  F04C2210/206 ,  F04C2240/603

Abstract: A vane rotary compressor may include a main bearing and a sub bearing provided with a plurality of back pressure pockets each having a different pressure formed on a surface facing the cylinder, a rotational shaft radially supported by the main bearing and the sub bearing, a roller provided with a back pressure chamber that communicates with the plurality of back pressure pockets and having a plurality of vanes configured to divide a compression space into a plurality of compression chambers. At least one of the main bearing or the sub bearing is provided with an oil supply passage that communicates with a back pressure pocket having a relatively low pressure among the plurality of back pressure pockets. Accordingly, oil may be smoothly supplied to a back pressure pocket having a low pressure.

公开(公告)号：US11703055B2

公开(公告)日：2023-07-18

申请号：US17183505

申请日：2021-02-24

Applicant: LG ELECTRONICS INC.

Inventor： Jinung Shin ,  Seoungmin Kang ,  Joonhong Park

IPC: F04C18/356 ,  F04C29/12

CPC classification number: F04C18/3564 ,  F04C29/12 ,  F04C2240/20 ,  F04C2240/50 ,  F04C2240/60 ,  F05B2210/12 ,  F05B2240/20 ,  F05B2240/50

Abstract: A rotary compressor is provided that may include a rotational shaft, first and second bearings configured to support the rotational shaft in a radial direction, a cylinder disposed between the first and second bearings to form a compression space, a rotor disposed in the compression space and coupled to the rotational shaft to compress a refrigerant as the rotor rotates, and at least one vane slidably inserted into the rotor, the at least one vane coming into contact with an inner peripheral surface of the cylinder to separate the compression space into a plurality of regions. At least one of the first bearing and the second bearing may include first and second pockets formed on a surface facing the rotor, and at least one of the first pocket and the second pocket may be formed in an asymmetrical shape.

公开(公告)号：US10982675B2

公开(公告)日：2021-04-20

申请号：US16260313

申请日：2019-01-29

Applicant: LG ELECTRONICS INC.

Inventor： Joonhong Park ,  Bumdong Sa

IPC: F04C29/02 ,  F04C18/356 ,  F04C29/00 ,  F04C23/00 ,  F01C21/08

Abstract: A rotary compressor may include a rotational shaft coupled to a drive motor and having a central passage, an eccentric portion provided eccentrically from the rotational shaft, a cylinder through which the rotational shaft passes, the cylinder forming a compression chamber in which refrigerant is accommodated, a roller an inner circumferential surface of which is in close contact with an outer circumferential surface of the eccentric portion, the roller rolling and compressing a refrigerant, a vane inserted into the cylinder, the vane protruding from an inner circumferential surface of the cylinder when backpressure is applied to the vane to be in contact with an outer circumferential surface of the roller, and partitioning the compression chamber into a plurality of chambers; a plurality of oil supply grooves on an outer circumferential surface of the eccentric portion; and an oil supply passage that communicates the central passage with the oil supply grooves.

公开(公告)号：US12228130B2

公开(公告)日：2025-02-18

申请号：US18610425

申请日：2024-03-20

Applicant: LG ELECTRONICS INC.

Inventor： Seseok Seol ,  Joonhong Park ,  Kiyoul Noh

IPC: F04C18/356

Abstract: A rotary compressor provided that may include a casing, a cylinder, a roller, and at least one vane slidably inserted into the roller, and the roller may have at least one bypass passage through which spaces on both sides of a contact point based on a rotational direction of the roller communicate with each other. Through the at least one bypass passage, residual refrigerant remaining in a compression space even after a discharge stroke may be bypassed to a suction chamber, thereby minimizing the refrigerant remaining in the compression space after the discharge stroke. Also, loss due to overcompression in a residual space may be suppressed or prevented while reducing suction loss due to the introduction of overcompressed high-pressure refrigerant by the bypassing the refrigerant in the residual space toward a suction side in advance.

公开(公告)号：US20240328420A1

公开(公告)日：2024-10-03

申请号：US18610425

申请日：2024-03-20

Applicant: LG Electronics Inc.

Inventor： Seseok SEOL ,  Joonhong Park ,  Kiyoul Noh

IPC: F04C18/356

CPC classification number: F04C18/356 ,  F04C2240/30

Abstract: A rotary compressor provided that may include a casing, a cylinder, a roller, and at least one vane slidably inserted into the roller, and the roller may have at least one bypass passage through which spaces on both sides of a contact point based on a rotational direction of the roller communicate with each other. Through the at least one bypass passage, residual refrigerant remaining in a compression space even after a discharge stroke may be bypassed to a suction chamber, thereby minimizing the refrigerant remaining in the compression space after the discharge stroke. Also, loss due to overcompression in a residual space may be suppressed or prevented while reducing suction loss due to the introduction of overcompressed high-pressure refrigerant by the bypassing the refrigerant in the residual space toward a suction side in advance.

公开(公告)号：US11773854B2

公开(公告)日：2023-10-03

申请号：US17961672

申请日：2022-10-07

Applicant: LG ELECTRONICS INC.

Inventor： Sedong Lee ,  Seoungmin Kang ,  Joonhong Park

IPC: F03C2/00 ,  F03C4/00 ,  F04C2/00 ,  F04C18/356 ,  F04C18/344 ,  F04C29/12 ,  F04C23/00

CPC classification number: F04C18/3568 ,  F04C18/344 ,  F04C29/126 ,  F04C23/001 ,  F04C2240/20 ,  F04C2240/50

Abstract: A rotary compressor may include an outflow passage through which refrigerant flows out of a compression space. The outflow passage may include at least one first outflow guide portion disposed in a main bearing or a sub bearing, at least one second outflow guide portion formed through between both axial ends of a roller, and at least one third outflow guide portion disposed in a bearing opposite to the bearing with the at least one first outflow guide portion based on the roller. This may minimize an amount of refrigerant remaining in the compression space. A pressure difference on a front of a vane may also be eliminated, which may suppress or prevent vane jumping. As the outflow passage is periodically opened, refrigerant leakage may be suppressed or prevented during a compression stroke.

公开(公告)号：US11644035B1

公开(公告)日：2023-05-09

申请号：US17881883

申请日：2022-08-05

Applicant: LG ELECTRONICS INC.

Inventor： Joonhong Park ,  Seoungmin Kang ,  Jinung Shin

IPC: F04C18/34 ,  F04C2/32 ,  F04C29/12 ,  F04C18/344 ,  F04C2/344 ,  F04C23/00

CPC classification number: F04C18/3445 ,  F04C2/321 ,  F04C2/344 ,  F04C18/3442 ,  F04C29/124 ,  F04C23/008 ,  F04C2210/26 ,  F04C2240/50

Abstract: A rotary compressor may include a casing, a cylinder, a main bearing, a sub bearing, a rotational shaft, a roller having at least one vane slot and a back pressure chamber, and at least one vane. The roller may include at least one spring insertion groove formed in an inner end portion of the at least one vane slot in a lengthwise direction of the at least one vane slot, and a vane spring that supports a rear surface of the vane toward an inner circumferential surface of the cylinder may be disposed in the at least one spring insertion groove. Accordingly, elastic force may be supplied to the rear surface of the vane, to suppress or prevent trembling of the vane caused while the vane passes through a proximal portion during operation.

公开(公告)号：US11619230B2

公开(公告)日：2023-04-04

申请号：US17502098

申请日：2021-10-15

Applicant: LG ELECTRONICS INC.

Inventor： Joonhong Park ,  Kiyoul Noh ,  Seokhwan Moon

IPC: F04C18/344 ,  F04C29/02 ,  F04C29/00 ,  F01C21/08

Abstract: A vane rotary compressor includes a roller rotatably supported in a cylinder and including a plurality of vane slots formed along a circumferential direction with back pressure chambers formed at one end of each of the vane slots. A plurality of vanes are slidably supported in the vane slots protruding toward an inner circumferential surface of the cylinder. A compression space formed by the vanes between the roller and the cylinder includes an inlet port and an outlet port formed at both sides of a contact point between the roller and the cylinder. A vane positioned between the inlet port and the outlet port is configured such that a front gap between a front surface of the vane and the inner circumferential surface of the cylinder is smaller than a rear gap between a rear surface of the vane and an inner surface of the back pressure chamber.

公开(公告)号：US20230088672A1

公开(公告)日：2023-03-23

申请号：US17869037

申请日：2022-07-20

Applicant: LG ELECTRONICS INC.

Inventor： Seseok SEOL ,  Seoungmin Kang ,  Joonhong Park

IPC: F04C18/344 ,  F04C29/12

Abstract: A rotary compressor is provided that may include a cylinder having an inner peripheral surface defined in an annular shape to define a compression space, and provided with a suction port configured to communicate with the compression space and through which refrigerant is suctioned into the compression space; a roller rotatably provided in the compression space of the cylinder, and having a plurality of vane slots that provides a back pressure at one side thereinside and that is provided at a predetermined interval along an outer peripheral surface of the roller; and a plurality of vanes slidably inserted into the plurality of vane slots, respectively, and configured to rotate together with the roller, front end surfaces of which come into contact with the inner peripheral surface of the cylinder due to the back pressure to partition the compression space into a plurality of compression chambers. High-pressure refrigerant may be accommodated between one of the plurality of vanes and the inner peripheral surface of the cylinder.