公开(公告)号：US20230184250A1

公开(公告)日：2023-06-15

申请号：US17926210

申请日：2021-04-15

Applicant: LG ELECTRONICS INC.

Inventor： Bumdong SA ,  Seseok SEOL ,  Seokhwan MOON

IPC: F04C18/344

CPC classification number: F04C18/344 ,  F04C2240/20 ,  F04C2240/50 ,  F04C2210/12

Abstract: A rotary compressor is provided that may include a cylinder; a chamber eccentrically formed in the cylinder and accommodating a predetermined working fluid; a rotor rotatably received in the chamber and arranged so as to be concentric to the cylinder; first and second bearings disposed on upper and lower portions, respectively, of the cylinder so as to close the chamber, and which support a drive shaft of the rotor; a plurality of vanes movably installed on the rotor in a radial direction thereof, and protruding from the rotor up to an inner circumferential surface of the cylinder so as to divide the chamber into a plurality of compression spaces; first and second guide grooves which, in order to accommodate a portion of the vanes, are formed on respective surfaces, facing the chamber, of the first and second bearings so as to be concentric to the chamber, and guide the plurality of vanes while the rotor is rotating so that the plurality of vanes continuously protrude up to the inner circumferential surface of the cylinder; and an auxiliary bearing which is provided in at least one of the first guide groove or the second guide groove and rotating with the plurality of vanes.

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：US20200217203A1

公开(公告)日：2020-07-09

申请号：US16551101

申请日：2019-08-26

Applicant: LG ELECTRONICS INC.

Inventor： Sedong LEE ,  Bumdong SA ,  Seseok SEOL

IPC: F01C21/08 ,  F04C18/352 ,  F25B1/04

Abstract: A rotary compressor: a casing; a plurality of bearings provided in an internal space of the casing; at least one cylinder provided between the bearings to form a compression space and has a vane slot; a rolling piston accommodated in the compression space to perform an orbiting movement; at least one vane that is slidably inserted into the vane slot of the cylinder, the at least one vane configured to separate the compression space into a suction chamber and a discharge chamber; a discharge cover including a noise reducing space to accommodate refrigerant discharged from the compression space; and a bypass flow path that allows the noise reducing space of the discharge cover to be connected between a sidewall of the vane slot and a side of the vane facing the sidewall.

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：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：US20200056612A1

公开(公告)日：2020-02-20

申请号：US16544170

申请日：2019-08-19

Applicant: LG ELECTRONICS INC.

Inventor： Seseok SEOL ,  Bumdong SA

IPC: F04C29/02 ,  F04C2/356 ,  F04C2/344 ,  F04B9/129 ,  F04B27/08

Abstract: A rotary compressor includes a cylinder, a drive unit, a piston, a vane, and an oil passage. The cylinder includes a suction chamber for suctioning fluid and a compression chamber for compressing fluid. The drive unit rotates a drive shaft by connecting to the cylinder. The piston oscillates in the cylinder by connecting to the drive shaft. The vane extends between the cylinder and the piston so as to separate the suction chamber from the compression chamber, and some parts of the length of the vane are inserted into a slide groove formed in the cylinder. One end of the vane is connected to the coupling groove formed in the piston. The oil passage is disposed between one end of the vane and the rolling piston so as to receive oil therethrough.

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：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.

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：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.