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：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：US11448215B2

公开(公告)日：2022-09-20

申请号：US17120573

申请日：2020-12-14

Applicant: LG ELECTRONICS INC.

Inventor： Seokhwan Moon ,  Seoungmin Kang ,  Byeongchul Lee

IPC: F03C2/00 ,  F03C4/00 ,  F04C2/00 ,  F04C15/00 ,  F04C18/344 ,  F01C21/08 ,  F04C27/00 ,  F04C29/12 ,  F04C23/00

Abstract: A hermetic compressor is provided that may include a vane that is inserted into a roller, rotates with the roller, and is pushed out toward an inner circumference of a cylinder by rotation of the roller to divide the compression chamber into a plurality of spaces. The vane may include a body having a sealing surface that contacts the inner circumference of the cylinder and inserted into the roller; and a guide that extends from an axial end of the body in a direction crossing a direction the vane slides out, and that is slidably inserted into a guide groove formed on at least one of the first bearing or the second bearing to restrain the vane from sliding out of the roller toward the inner circumference of the cylinder.

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：US12110894B2

公开(公告)日：2024-10-08

申请号：US18282011

申请日：2022-03-16

Applicant: LG ELECTRONICS INC.

Inventor： Jinung Shin ,  Joonhong Park ,  Seoungmin Kang

IPC: F04C18/344 ,  F04C18/356 ,  F04C29/02

CPC classification number: F04C29/028 ,  F04C18/3441 ,  F04C18/356 ,  F04C29/023 ,  F04C2240/30 ,  F04C2240/56 ,  F04C2240/603

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：US11732584B2

公开(公告)日：2023-08-22

申请号：US17536222

申请日：2021-11-29

Applicant: LG ELECTRONICS INC.

Inventor： Jonghun Lee ,  Seoungmin Kang ,  Seungmock Lee

IPC: F01C21/08 ,  F04C18/344

CPC classification number: F01C21/0809 ,  F04C18/3446 ,  F04C2240/10 ,  F04C2250/30

Abstract: A rotary compressor is provided that may include a cylinder having an inner circumferential surface with an annular shape to form a compression space; a roller having a plurality of vane slots disposed at predetermined intervals along an outer circumferential surface thereof, and rotatably inserted into the compression space of the cylinder; and a plurality of vanes slidably inserted into the respective vane slots to rotate together with the roller and by which the compression space is divided into a plurality of compression chambers. At least one of the vane slots is unequally spaced in a circumferential direction. Accordingly, periodicity of noise may be reduced to thereby increase the effect of noise reduction of the compressor.

公开(公告)号：US11703055B2

公开(公告)日：2023-07-18

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

CPC classification number: F04C18/3564 ,  F04C29/12 ,  F04C2240/20 ,  F04C2240/50 ,  F04C2240/60 ,  F05B2210/12 ,  F05B2240/20 ,  F05B2240/50

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：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：US10767649B2

公开(公告)日：2020-09-08

申请号：US15855091

申请日：2017-12-27

Applicant: LG ELECTRONICS INC.

Inventor： Seokhwan Moon ,  Seoungmin Kang ,  Byeongchul Lee

IPC: F03C2/00 ,  F03C4/00 ,  F04C2/00 ,  F04C23/00 ,  F04C18/344 ,  F01C21/10 ,  F04C27/00

Abstract: A hermetic compressor may include a cylinder having an elliptical inner circumferential surface; a roller eccentric from the inner circumferential surface; and at least one vane withdrawn towards the inner circumferential surface when the roller is rotated to divide a compression chamber. On the basis of a contact point where the inner circumferential surface and an outer circumferential surface are closest, a first center line passes through a center of the cylinder, an ellipse positioned at a first side of the first center line and forming the inner circumferential surface is a first ellipse, a center point of the first ellipse is a first center point, an ellipse positioned at a second side of the first center line and forming the inner circumferential surface is a second ellipse, a center point of the second ellipse is a second center point, and the first center point and the second center point are spaced apart from the center.