公开(公告)号：US20240151231A1

公开(公告)日：2024-05-09

申请号：US18282011

申请日：2022-03-16

Applicant: LG ELECTRONICS INC.

Inventor： Jinung SHIN ,  Joonhong PARK ,  Seoungmin KANG

IPC: F04C29/02 ,  F04C18/356

CPC classification number: F04C29/028 ,  F04C18/356 ,  F04C2240/30 ,  F04C2240/56 ,  F05B2240/60

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：US20180372102A1

公开(公告)日：2018-12-27

申请号：US16019891

申请日：2018-06-27

Applicant: LG Electronics Inc.

Inventor： Seokhwan MOON ,  Kiyoul NOH ,  Jinung SHIN

IPC: F04C18/344 ,  F04C23/00 ,  F25B31/02 ,  F25B1/10

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.

公开(公告)号：US20180340534A1

公开(公告)日：2018-11-29

申请号：US15986114

申请日：2018-05-22

Applicant: LG Electronics Inc.

Inventor： Jinung SHIN ,  Seokhwan MOON ,  Kiyoul NOH

IPC: F04C18/344 ,  F04C29/00 ,  F04C29/12

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：US20220243728A1

公开(公告)日：2022-08-04

申请号：US17562175

申请日：2021-12-27

Applicant: LG ELECTRONICS INC.

Inventor： Seseok SEOL ,  Jinung SHIN ,  Joonhong PARK

IPC: F04C2/344 ,  F04C15/06

Abstract: A rotary compressor may include a case, a cylinder, a roller, a vane, a main bearing and a sub bearing, and a discharge passage defined in the main bearing or the sub bearing to discharge refrigerant compressed in a compression space. The discharge passage may include at least one discharge hole formed through the main bearing or the sub bearing, and at least one discharge guide groove having a first end that communicates with the at least one discharge hole and a second end that extends from the at least one discharge hole toward a contact point between the cylinder and the roller and is recessed from one surface of the main bearing or the sub bearing forming the compression space. Accordingly, an amount of refrigerant remaining in the compression space even after a discharge stroke may be reduced.

公开(公告)号：US20210363990A1

公开(公告)日：2021-11-25

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

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：US20180266419A1

公开(公告)日：2018-09-20

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 ,  F04C18/356 ,  F04C29/02

CPC classification number: F04C23/008 ,  F04C15/06 ,  F04C18/10 ,  F04C18/3562 ,  F04C18/3564 ,  F04C29/023 ,  F04C2210/26 ,  F04C2240/30

Abstract: A hermetic compressor includes a casing, a cylinder coupled to an inside of the casing, the cylinder defining a compression space, a first bearing and a second bearing defining a compression space together with the cylinder, a roller located 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 circumferential surface of the cylinder when the roller rotates to divide the compression space into a plurality of compression chambers. An inlet port in communication with the compression space is defined in the first bearing or the second bearing, and a refrigerant suction pipe penetrating through the casing is inserted to be coupled to the inlet port.

公开(公告)号：US20230349382A1

公开(公告)日：2023-11-02

申请号：US17983566

申请日：2022-11-09

Applicant: LG ELECTRONICS INC.

Inventor： Jinung SHIN ,  Seoungmin KANG

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

CPC classification number: F04C29/028 ,  F04C29/0057 ,  F04C18/344 ,  F04C2240/603

Abstract: A rotary compressor is disclosed. A back pressure pocket among a plurality of back pressure pockets closest to a discharge port disposed in at least one of main bearing or sub bearing is radially spaced from an inner circumferential surface of a bearing hole, and communicates with an inner space of a casing through a back pressure passage formed through at least one of the main bearing or the sub bearing. Accordingly, the back pressure pocket closest to the discharge port may strongly support a vane passing near a reference point toward a cylinder while forming a discharge pressure, or a super discharge pressure higher than the discharge pressure. This may suppress or prevent chattering of the vane near the reference point to reduce vibration noise while suppressing or preventing wear between the vane and the cylinder to enhance compression efficiency. This may also suppress or prevent leakage between compression chambers, thereby preventing delay of initial startup of the compressor.

公开(公告)号：US20230228270A1

公开(公告)日：2023-07-20

申请号：US17989873

申请日：2022-11-18

Applicant: LG ELECTRONICS INC.

Inventor： Seseok SEOL ,  Jinung SHIN ,  Sedong LEE

IPC: F04C29/00 ,  F04C18/344

CPC classification number: F04C29/0078 ,  F04C18/344

Abstract: A rotary compressor is provided that may include a rotation preventing key between a roller and a rotary shaft, the roller being a separable-type roller assembled into the rotary shaft. The rotation preventing unit may constrain rotation of the roller and allow axial movement of the roller with respect to the rotary shaft. Thus, axial movement of the roller along the rotary shaft may be suppressed or prevented, and thus, friction loss and abrasion between the roller and a main bearing or between the roller or a sub bearing may be suppressed or prevented.

公开(公告)号：US20200271114A1

公开(公告)日：2020-08-27

申请号：US16734755

申请日：2020-01-06

Applicant: LG ELECTRONICS INC.

Inventor： Kiyoul NOH ,  Seokhwan MOON ,  Jinung SHIN

IPC: F04C18/344 ,  F04C29/12

Abstract: A vane rotary compressor may include a cylinder provided with at least one outlet port; a plurality of bearings coupled to both sides of the cylinder in an axial direction of the cylinder to form a compression space together with the cylinder; a rotational shaft radially supported by the plurality of bearings; a roller rotatably coupled to the rotational shaft and provided with a plurality of vane slots formed in a circumferential direction, each having a first end opened to an outer circumferential surface thereof; a plurality of vanes slidably inserted into the plurality of vane slots of the roller, respectively, and protruding toward an inner circumferential surface of the cylinder to partition the compression space into a plurality of compression chambers, respectively; a discharge valve coupled to the cylinder to open and close the at least one outlet port; and at least one bypass hole formed in at least one of the plurality of bearings or formed in the cylinder to bypass a portion of refrigerant compressed in the compression chamber.

公开(公告)号：US20170218956A1

公开(公告)日：2017-08-03

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 ,  F04C27/00 ,  F04C29/00

Abstract: The present disclosure may provide a compressor in which an outer circumferential side cross-sectional area of a vane slot is formed to be smaller than an inner circumferential side cross-sectional area thereof to decrease an area receiving a force in a roller direction by a vane so as to reduce a contact force between the roller and the vane, and a gas accommodation portion capable of selectively forming a suction pressure and an intermediate pressure is formed between the vane and the vane slot to appropriately control a contact force between the vane and the roller, and a contact surface of the vane facing the roller is broadly formed at a side of a compression chamber to appropriately reduce a contact force between the roller and the vane, and a space portion forming a discharge pressure is formed at least either one side of a side surface of the vane and a cylinder corresponding thereto to decrease a side directional reaction force applied to the vane, thereby reducing a mechanical friction loss between the vane and the cylinder.