公开(公告)号：US11174865B2

公开(公告)日：2021-11-16

申请号：US15926254

申请日：2018-03-20

Applicant: LG ELECTRONICS INC.

Inventor： Seokhwan Moon ,  Seoungmin Kang ,  Jinung Shin

IPC: F04C23/00 ,  F04C18/10 ,  F04C29/02 ,  F04C18/356 ,  F04C15/06

Abstract: A hermetic compressor includes a casing, a cylinder in the casing, a first bearing and a second bearing defining a compression space together with the cylinder, a roller located at an eccentric position with respect to an inner surface of the cylinder and configured to vary a volume of the compression space, and a vane inserted into the roller to rotate together with the roller, and drawn out toward the inner surface of the cylinder to divide the compression space into compression chambers. An inlet port in communication with the compression space is defined in the first bearing, and an intermediate plate is located between the cylinder and the inlet port and defines a suction passage connected to the inlet port, where a peripheral length of an inner peripheral surface of the suction passage is greater than a peripheral length of an outer peripheral surface of the suction passage.

公开(公告)号：US10473102B2

公开(公告)日：2019-11-12

申请号：US15417486

申请日：2017-01-27

Applicant: LG ELECTRONICS INC.

Inventor： Yunhi Lee ,  Seoungmin Kang ,  Jinung Shin ,  Seokhwan Moon ,  Byeongchul Lee

IPC: F04C18/356 ,  F01C21/08 ,  F04C27/00 ,  F04C29/00 ,  F04C23/00

Abstract: A compressor is provided in which an outer circumferential side cross-sectional area of a vane slot is formed smaller than an inner circumferential side cross-sectional area thereof to decrease an area receiving a force in a roller direction by a vane to reduce a contact force between the roller and the vane, and a gas accommodation portion selectively forming a suction pressure and an intermediate pressure is formed between the vane and the vane slot to control the contact force. A contact surface of the vane facing the roller is formed at a side of a compression chamber to reduce the contact force, and a space forming a discharge pressure is formed at at least either one side of a side surface of the vane and a cylinder to decrease a side directional reaction force applied to the vane, thereby reducing a friction between the vane and the cylinder.

公开(公告)号：US12258966B2

公开(公告)日：2025-03-25

申请号：US18443400

申请日：2024-02-16

Applicant: LG ELECTRONICS INC.

Inventor： Joonhong Park ,  Seoungmin Kang ,  Jinung Shin

IPC: F04C18/344 ,  F01C21/08 ,  F01C21/10 ,  F04C29/02 ,  F04C29/12

Abstract: A rotary compressor is disclosed. The rotary compressor may include a casing, a cylinder, main and sub bearings, a rotational shaft, a roller, at least one vane, and a vane support portion that axially supports the at least one vane formed on a bearing surface to extend along a reciprocating direction of the at least one vane from an inner circumferential surface of at least one back pressure pocket at an end of circumferential ends of the at least one back pressure pocket, adjacent to a contact point, and/or protrude axially from the inner circumferential surface of the at least one back pressure pocket and extend in a circumferential direction. This may secure a wide axial support area for a rear end of the at least one vane passing the contact point and/or near the contact point, to suppress or prevent axial tilting of the at least one vane, thereby reducing friction loss, wear, and vibration noise due to the axial tilting of the at least one vane during operation of the compressor.

公开(公告)号：USRE50022E1

公开(公告)日：2024-06-25

申请号：US17720972

申请日：2022-04-14

Applicant: LG Electronics Inc.

Inventor： Jinung Shin ,  Seokhwan Moon ,  Kiyoul Noh

IPC: F04C18/344 ,  F04C29/00

CPC classification number: F04C18/344 ,  F04C18/3441 ,  F04C18/3442 ,  F04C29/005

Abstract: A rotary compressor includes a cylinder that is coupled to an inner space of a casing and that defines a compression space, a first bearing and a second bearing located at upper and lower sides of the cylinder, a roller disposed eccentrically with respect to an inner circumferential surface of the cylinder to vary a volume of the compression space based on rotation, and a vane inserted into the roller to rotate together with the roller, and drawn out toward the inner circumferential surface of the cylinder during the rotation of the roller to partition the compression space into a plurality of compression chambers. A suction passage communicating with the compression space is defined in the first bearing or the second bearing, and a suction port communicating between the suction passage and the compression space is defined on a side surface of the cylinder.

公开(公告)号：US12018686B2

公开(公告)日：2024-06-25

申请号：US17864599

申请日：2022-07-14

Applicant: LG ELECTRONICS INC.

Inventor： Jinung Shin ,  SeSeok Seol ,  Sedong Lee

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

CPC classification number: F04C18/3445 ,  F04C18/3442 ,  F04C29/124 ,  F04C23/008 ,  F04C2210/26 ,  F04C2240/50 ,  F04C2250/101

Abstract: A rotary compressor is provided that may include a cylinder having an inner peripheral surface; a roller; and a plurality of vanes slidably inserted into the plurality of vane slots 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. The cylinder may further include a suction flow path for refrigerant that may include a suction port that communicates with the compression space to suction the refrigerant in a lateral direction, and a suction passage disposed in a direction that crosses the suction port to provide communication between the compression space and the suction port.

公开(公告)号：US11754071B2

公开(公告)日：2023-09-12

申请号：US17499313

申请日：2021-10-12

Applicant: LG Electronics Inc.

Inventor： Seokhwan Moon ,  Seoungmin Kang ,  Jinung Shin

IPC: F04C15/06 ,  F04C23/00 ,  F04C18/10 ,  F04C29/02 ,  F04C18/356 ,  F04C18/344

CPC classification number: F04C15/06 ,  F04C18/10 ,  F04C18/3562 ,  F04C18/3564 ,  F04C23/008 ,  F04C29/023 ,  F04C18/344 ,  F04C2240/30 ,  F04C2240/40 ,  F04C2240/50

Abstract: A hermetic compressor includes a casing, a cylinder in the casing, a first bearing and a second bearing defining a compression space together with the cylinder, a roller located at an eccentric position with respect to an inner surface of the cylinder and configured to vary a volume of the compression space, and a vane inserted into the roller to rotate together with the roller, and drawn out toward the inner surface of the cylinder to divide the compression space into compression chambers. An inlet port in communication with the compression space is defined in the first bearing, and an intermediate plate is located between the cylinder and the inlet port and defines a suction passage connected to the inlet port, where a peripheral length of an inner peripheral surface of the suction passage is greater than a peripheral length of an outer peripheral surface of the suction passage.

公开(公告)号：US11448216B2

公开(公告)日：2022-09-20

申请号：US17177683

申请日：2021-02-17

Applicant: LG ELECTRONICS INC.

Inventor： Joonhong Park ,  Seoungmin Kang ,  Jinung Shin

IPC: F04C23/00 ,  F04C18/344 ,  F04C18/356 ,  F04C29/00

Abstract: A rotary compressor is provided that may include a rotational shaft including at least one protrusion formed on an outer peripheral surface, 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. The rotor may include at least one groove which is formed on an inner peripheral surface and faces the at least one protrusion.

公开(公告)号：US10883501B2

公开(公告)日：2021-01-05

申请号：US16019891

申请日：2018-06-27

Applicant: LG Electronics Inc.

Inventor： Seokhwan Moon ,  Kiyoul Noh ,  Jinung Shin

IPC: F03C2/00 ,  F03C4/00 ,  F04C2/00 ,  F04C18/00 ,  F04C18/344 ,  F04C23/00 ,  F25B31/02 ,  F25B1/10 ,  F01C21/08 ,  F01C21/10 ,  F25B1/04

Abstract: The present disclosure relates to a two-stage rotary compressor in which refrigerant inhaled into a compression space of a cylinder is compressed sequentially in two axially connected compression chambers and then is discharged. A rotary compressor according to an embodiment of the present disclosure includes a first compression unit and a second compression unit arranged on and along a single rotation shaft. Middle-pressure refrigerant discharged from the first compression unit flows into the second compression unit. A maximum gas force of the first compression unit and a maximum gas force of the second compression unit counteract with each other, thereby reducing a reaction force acting on a rotation shaft. According to the present disclosure, a single rotary compressor is configured to separately achieve the stroke volume increase and the compression period increase.