公开(公告)号：US20240167476A1

公开(公告)日：2024-05-23

申请号：US18283057

申请日：2022-03-18

Applicant: LG ELECTRONICS INC.

Inventor： Joonhong PARK ,  Seseok SEOL ,  Seoungmin KANG

IPC: F04C29/02

CPC classification number: F04C29/028 ,  F04C29/025 ,  F04C2240/50 ,  F04C2240/603 ,  F05B2210/14

Abstract: A rotary compressor is provided that may include at least one vane that is slidably inserted into at least one vane slot provided in a roller or a cylinder so as to separate a compression space into a plurality of compression chambers. The at least one vane has an at least one oil supply groove formed in at least one of axial side surfaces, respectively, facing a main bearing and a sub bearing. The at least one oil supply groove may be longer in a longitudinal direction of the at least one vane than in a widthwise direction of the at least one vane. With this structure, it is possible to suppress friction loss and wear on a friction surface by supplying oil to the friction surface in contact with the at least one vane.

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：US20240344518A1

公开(公告)日：2024-10-17

申请号：US18616519

申请日：2024-03-26

Applicant: LG ELECTRONICS INC.

Inventor： Seseok SEOL ,  Yunhi LEE ,  Seoungmin KANG

IPC: F04C29/06 ,  F04C18/22

CPC classification number: F04C29/06 ,  F04C18/22 ,  F04C18/344 ,  F04C18/356 ,  F04C2210/261 ,  F04C2210/268 ,  F04C2240/30 ,  F04C2240/50

Abstract: A rotary compressor is provided that may include a casing, a cylinder, a main bearing, a sub bearing, a rotational shaft, a roller, and at least one vane. The cylinder may include at least one elastic deformation unit to absorb impact with the at least one vane. With this structure, a collision force caused due to chattering of the at least one vane may be absorbed to suppress or prevent friction loss and/or wear between the cylinder and the vane, thereby enhancing compressor efficiency, reducing vibration noise, and enabling fast initial actuation.

公开(公告)号：US20230131102A1

公开(公告)日：2023-04-27

申请号：US17961672

申请日：2022-10-07

Applicant: LG ELECTRONICS INC.

Inventor： Sedong LEE ,  Seoungmin KANG ,  Joonhong PARK

IPC: F04C18/356 ,  F04C18/344 ,  F04C29/12

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, to communicate with the at least one first outflow guide portion through the at least one second outflow guide portion. This may minimize an amount of refrigerant remaining in the compression space, thereby enhancing compression efficiency. A pressure difference on a front of a vane may also be eliminated, which may suppress or prevent vane jumping, thereby reducing wear of the vane or cylinder. As the outflow passage is periodically opened, refrigerant leakage may be suppressed or prevented during a compression stroke, thereby preventing under-compression.

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：US20240369059A1

公开(公告)日：2024-11-07

申请号：US18274829

申请日：2022-01-06

Applicant: LG ELECTRONICS INC.

Inventor： Bumdong SA ,  Seseok SEOL ,  Seoungmin KANG

IPC: F04C2/344

Abstract: A rotary compressor according to the present embodiment comprises: a main bearing and a sub-bearing which are respectively provided on both sides of a cylinder in the axial direction and each provided with a guide groove; a roller which is accommodated in the cylinder and rotated along with a rotary shaft; at least one vane which is slidably inserted in the roller, and on which a guide protrusion that is slidably inserted in the guide groove in the circumferential direction is extended in the axial direction; and a bearing member which is provided between the guide groove of at least one bearing between the main bearing and the sub-bearing and the guide protrusion of the vane. As such, the frictional loss between the vane or the roller and the main bearing or the sub-bearing facing same can be reduced to improve the compressor efficiency.

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：US20220003235A1

公开(公告)日：2022-01-06

申请号：US17181076

申请日：2021-02-22

Applicant: LG ELECTRONICS INC.

Inventor： Seseok SEOL ,  Seoungmin KANG ,  Bumdong SA

IPC: F04C18/344

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. The at least one vane may include a pin that extends in an axial direction, and at least one of the first bearing and the second bearing may include a rail groove into which the pin may be inserted.

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.

公开(公告)号：US20240309870A1

公开(公告)日：2024-09-19

申请号：US18443400

申请日：2024-02-16

Applicant: LG Electronics Inc.

Inventor： Joonhong PARK ,  Seoungmin KANG ,  Jinung SHIN

IPC: F04C18/344 ,  F04C29/02

CPC classification number: F04C18/3441 ,  F04C29/02 ,  F04C2240/50

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.