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：US11566621B1

公开(公告)日：2023-01-31

申请号：US17880801

申请日：2022-08-04

Applicant: LG ELECTRONICS INC.

Inventor： Kiyoul Noh ,  Minho Lee ,  Bumdong Sa

IPC: F04C18/34 ,  F04C18/356 ,  F04C2/32 ,  F04C2/344 ,  F04C18/344 ,  F04C29/12 ,  F04C23/00

Abstract: A rotary compressor may include a cylinder having an inner peripheral surface defined in an annular shape to define a compression space, and a suction port that extends in a lateral direction 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 provided at a predetermined interval along an outer peripheral surface of the roller; a plurality of vanes slidably inserted into the plurality of vane slots, respectively, 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; and a main bearing and a sub bearing provided at ends of the cylinder and in contact with surfaces of the plurality of vanes, respectively, and spaced apart from each other to define surfaces of the compression space, respectively. At least one surface of the vane in contact with the main bearing and the sub bearing may be a curved surface having a predetermined curvature.

公开(公告)号：US11378079B2

公开(公告)日：2022-07-05

申请号：US17099943

申请日：2020-11-17

Applicant: LG ELECTRONICS INC.

Inventor： Seokhwan Moon ,  Jinung Shin ,  Kiyoul Noh

IPC: F04C18/32 ,  F01C21/08 ,  F01C21/02 ,  F04C29/12

Abstract: A rotary compressor may include a rotational shaft; first and second bearings that support the rotational shaft in a radial direction; a cylinder disposed between the first bearing and the second bearing, and forming a compression space; a rotor forming a contact point, disposed in the compression space, and having a predetermined gap with the cylinder, and coupled to the rotational shaft to compress refrigerant according to rotation; and at least one vane slidably inserted into the rotor, and contacting an inner circumferential surface of the cylinder to separate the compression space into a plurality of regions. Each of the at least one vane may include an upper pin that extends upward, and a lower pin that extends downward, a surface of the first bearing may include a first rail groove into which the upper pin may be inserted, and a first step disposed adjacent to the first rail groove, and a surface of the second bearing may include a second rail groove into which the lower pin may be inserted, and a second step disposed adjacent to the second rail groove.

公开(公告)号：US11346221B2

公开(公告)日：2022-05-31

申请号：US16241160

申请日：2019-01-07

Applicant: LG ELECTRONICS INC.

Inventor： Seokhwan Moon ,  Seoung-Min Kang ,  Kiyoul Noh

IPC: F01C21/08 ,  F01C1/344 ,  F25B1/04 ,  F04C18/344 ,  F04C28/22 ,  F04C29/12

Abstract: A backpressure rotary compressor may include at least one vane, at least one vane slot configured to accommodate the at least one vane and provided with a pocket portion and a slide portion, and a backpressure passage provided with a backpressure inlet disposed in front of the at least one vane slot and a backpressure outlet formed in the pocket portion. The backpressure passage may perform a role of allowing a compression chamber and the pocket portion to communicate with each other. According to the backpressure passage rotary compressor, proper pressure may be supplied to an inner end of the vane, thereby reducing a mechanical loss caused by pressure occurring in a close contact portion between an outer end of the at least one vane and an inner circumferential surface of the cylinder, and achieving high efficiency in relation to driving a device.

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：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：US11578724B2

公开(公告)日：2023-02-14

申请号：US17179708

申请日：2021-02-19

Applicant: LG ELECTRONICS INC.

Inventor： Seokhwan Moon ,  Seseok Seol ,  Kiyoul Noh

IPC: F04C18/348 ,  F04C18/356 ,  F04C18/32 ,  F01C21/08 ,  F01C1/32 ,  F04C29/12 ,  F01C21/02 ,  F01C21/18 ,  F01C1/324

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 to form a contact point forming a predetermined gap with the cylinder 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 each vane coming into contact with an inner peripheral surface of the cylinder to separate the compression space into a plurality of regions. The at least one vane may include a pin that extends upward or downward, and a lower surface of the first bearing or an upper surface of the second bearing may include a rail groove into which the pin may be inserted.

公开(公告)号：US11499555B2

公开(公告)日：2022-11-15

申请号：US16734679

申请日：2020-01-06

Applicant: LG ELECTRONICS INC.

Inventor： Kiyoul Noh ,  Seokhwan Moon ,  Joonhong Park

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

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：US20210301662A1

公开(公告)日：2021-09-30

申请号：US17099943

申请日：2020-11-17

Applicant: LG ELECTRONICS INC.

Inventor： Seokhwan MOON ,  Jinung Shin ,  Kiyoul Noh

IPC: F01C1/324 ,  F01C21/02 ,  F01C21/08 ,  F01C21/18

Abstract: A rotary compressor may include a rotational shaft; first and second bearings that support the rotational shaft in a radial direction; a cylinder disposed between the first bearing and the second bearing, and forming a compression space; a rotor forming a contact point, disposed in the compression space, and having a predetermined gap with the cylinder, and coupled to the rotational shaft to compress refrigerant according to rotation; and at least one vane slidably inserted into the rotor, and contacting an inner circumferential surface of the cylinder to separate the compression space into a plurality of regions. Each of the at least one vane may include an upper pin that extends upward, and a lower pin that extends downward, a surface of the first bearing may include a first rail groove into which the upper pin may be inserted, and a first step disposed adjacent to the first rail groove, and a surface of the second bearing may include a second rail groove into which the lower pin may be inserted, and a second step disposed adjacent to the second rail groove.