公开(公告)号：US11891995B2

公开(公告)日：2024-02-06

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 ,  F04C23/00 ,  F01C21/08

CPC classification number: F04C18/3445 ,  F04C18/3442 ,  F04C29/124 ,  F01C21/0809 ,  F04C18/3441 ,  F04C23/008 ,  F04C2240/40 ,  F04C2240/50 ,  F04C2240/603

Abstract: A rotary compressor may include a cylinder having an inner peripheral surface that defines 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 provided at a predetermined interval along an outer peripheral surface of the roller; and a plurality of vanes slidably inserted into the vane slots, respectively, and configured to rotate together with the roller, front end surfaces of which come into contact with 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 vanes and the cylinder.

公开(公告)号：US11421688B2

公开(公告)日：2022-08-23

申请号：US17113230

申请日：2020-12-07

Applicant: LG ELECTRONICS INC.

Inventor： Bumdong Sa ,  Joonhong Park ,  Seseok Seol

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

Abstract: A vane-type compressor is provided. The vane-type compressor may include a cylindrical cylinder having opposite open ends along an axial direction, an inner circumferential surface of the cylinder being eccentric from an outer circumferential surface of the cylinder, a main bearing and a sub bearing, respectively, positioned at the open ends of the cylinder, a rotor coupled to a shaft supported by the main bearing and the sub bearing and installed eccentric from the inner circumferential surface of the cylinder, and a plurality of vanes coupled to the rotor to rotate along with the rotor, the plurality of vanes dividing the inner circumferential surface of the cylinder into a plurality of spaces including a suction chamber and a compression chamber when the rotor rotates. An elastic member may be installed at a point at which a minimum gap is maintained between the inner circumferential surface of the cylinder and the rotor so that a portion of the elastic member protrudes inward of the inner circumferential surface of the cylinder. An end of a discharge dimple formed in the inner circumferential surface of the cylinder extends up to the point.

公开(公告)号：US11732712B2

公开(公告)日：2023-08-22

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 ,  F04C18/356 ,  F04C18/344 ,  F04C29/12

CPC classification number: F04C2/344 ,  F04C15/06 ,  F04C2240/30 ,  F04C2240/50

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：US11174863B2

公开(公告)日：2021-11-16

申请号：US16541260

申请日：2019-08-15

Applicant: LG ELECTRONICS INC.

Inventor： Joonhong Park ,  Kiyoul Noh ,  Seokhwan Moon

IPC: F04C18/344 ,  F04C29/02

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：US10794187B2

公开(公告)日：2020-10-06

申请号：US15992314

申请日：2018-05-30

Applicant: LG Electronics Inc.

Inventor： Joonhong Park ,  Bumdong Sa

IPC: F01C21/08 ,  F04C18/356 ,  F04C29/12 ,  F04C23/00

Abstract: The present invention includes a case, a driving motor, a rotating shaft, a cylinder having a compression space formed in a central portion thereof, a roller, a main bearing and a sub bearing, and a vane for partitioning the compression space into a suction chamber and a compression chamber, wherein the vane includes a vane housing provided with a space portion and a communication hole formed through one side of a front end portion thereof to form a flow path of a compressed refrigerant, and a valve member slidably installed in the space portion of the vane housing and selectively communicating the space portion with the compression chamber, wherein the flow path of the compressed refrigerant is formed by the movement of the valve member.

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：US12123414B2

公开(公告)日：2024-10-22

申请号：US18283057

申请日：2022-03-18

Applicant: LG ELECTRONICS INC.

Inventor： Joonhong Park ,  Seseok Seol ,  Seoungmin Kang

IPC: F04C18/356 ,  F01C21/08 ,  F04C29/02 ,  F25B31/00 ,  F25B31/02

CPC classification number: F04C29/028 ,  F01C21/0863 ,  F04C18/356 ,  F04C29/025 ,  F25B31/002 ,  F25B31/026 ,  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：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：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：US20210180597A1

公开(公告)日：2021-06-17

申请号：US17113230

申请日：2020-12-07

Applicant: LG ELECTRONICS INC.

Inventor： Bumdong SA ,  Joonhong Park ,  Seseok Seol

IPC: F04C18/344 ,  F04C18/356

Abstract: A vane-type compressor is provided. The vane-type compressor may include a cylindrical cylinder having opposite open ends along an axial direction, an inner circumferential surface of the cylinder being eccentric from an outer circumferential surface of the cylinder, a main bearing and a sub bearing, respectively, positioned at the open ends of the cylinder, a rotor coupled to a shaft supported by the main bearing and the sub bearing and installed eccentric from the inner circumferential surface of the cylinder, and a plurality of vanes coupled to the rotor to rotate along with the rotor, the plurality of vanes dividing the inner circumferential surface of the cylinder into a plurality of spaces including a suction chamber and a compression chamber when the rotor rotates. An elastic member may be installed at a point at which a minimum gap is maintained between the inner circumferential surface of the cylinder and the rotor so that a portion of the elastic member protrudes inward of the inner circumferential surface of the cylinder. An end of a discharge dimple formed in the inner circumferential surface of the cylinder extends up to the point.