公开(公告)号：US20210017985A1

公开(公告)日：2021-01-21

申请号：US16929518

申请日：2020-07-15

Applicant: LG ELECTRONICS INC.

Inventor： Suchul KIM ,  Changeol Jo ,  Donghyun Sohn

IPC: F04C18/02 ,  F04C23/00

Abstract: A scroll compressor is provided in which a center of a back pressure chamber is eccentrically disposed relative to a center of a fixed scroll. For example, the center of the back pressure chamber may be moved towards a center of an orbiting scroll at a time of discharge, thereby preventing displacement of the fixed scroll and ensuring stability in orbital movement of the orbiting scroll.

公开(公告)号：US12098723B2

公开(公告)日：2024-09-24

申请号：US18367576

申请日：2023-09-13

Applicant: LG ELECTRONICS INC.

Inventor： Jeonghun Kim ,  Changeol Jo ,  Nara Han ,  Juhwan Yun

IPC: F04C28/26 ,  F04C18/02 ,  F04C23/00 ,  F04C27/00 ,  F04C29/12

CPC classification number: F04C28/26 ,  F04C18/0215 ,  F04C18/0246 ,  F04C27/005 ,  F04C29/128 ,  F04C23/008 ,  F04C2240/805 ,  F04C2270/185

Abstract: A scroll compressor is provided that may include a block insertion groove to accommodate a discharge port and at least one bypass hole disposed in a rear surface of a non-orbiting end plate of a non-orbiting scroll, and a retainer block including at least one bypass valve to open or close the bypass hole inserted into the block insertion groove. The bypass hole may include a first bypass hole and a second bypass hole. The bypass valve may include a first bypass valve to open or close the first bypass hole and a second bypass valve to open or close the second bypass hole, and may be disposed between the block insertion groove and the retainer block facing the block insertion groove. Accordingly, the first and second bypass valves are not fastened to the non-orbiting end plate, which may allow the non-orbiting end plate to be made thin.

公开(公告)号：US11767843B2

公开(公告)日：2023-09-26

申请号：US17843101

申请日：2022-06-17

Applicant: LG ELECTRONICS INC.

Inventor： Changeol Jo ,  Suchul Kim ,  Junghwan Jang

IPC: F03C2/00 ,  F03C4/00 ,  F04C2/00 ,  F04C29/02 ,  F04C18/02 ,  F01C17/06 ,  F04C23/00

CPC classification number: F04C18/0215 ,  F01C17/066 ,  F04C29/028 ,  F04C23/008

Abstract: A scroll compressor may include an oil supply passage formed in a main frame. A first end of the oil supply passage may be open toward an orbiting space of the main frame and a second end may be open toward an Oldham ring. With this configuration, even if refrigerant suctioned through a refrigerant suction pipe sweeps away oil, which lubricates a sliding surface between a key and a key groove adjacent to the refrigerant suction pipe while passing through between the key and the key groove, oil may be quickly and smoothly supplied to the sliding surface. This may prevent wear between the key and the key groove so as to enhance efficiency of the compressor.

公开(公告)号：US11415132B2

公开(公告)日：2022-08-16

申请号：US16876281

申请日：2020-05-18

Applicant: LG ELECTRONICS INC.

Inventor： Changeol Jo ,  Suchul Kim ,  Ikhyeon Kwon

IPC: F01C1/02 ,  F04C27/00 ,  F04C18/02 ,  F01C17/06 ,  F04C23/00

Abstract: A scroll compressor is provided in which one of a fixed scroll or an orbiting scroll is provided with at least one guide groove, and the other is provided with a self-rotation prevention member inserted into the at least one guide groove to revolve in the at least one guide groove and configured to prevent self-rotation of the orbiting scroll.

公开(公告)号：US11841014B1

公开(公告)日：2023-12-12

申请号：US18109559

申请日：2023-02-14

Applicant: LG ELECTRONICS INC.

Inventor： Changeol Jo ,  Jeonghun Kim ,  Nara Han ,  Jihoon Park

IPC: F04C28/26 ,  F04C29/12 ,  F04C18/02

CPC classification number: F04C18/0261 ,  F04C18/0215 ,  F04C29/124

Abstract: A scroll compressor is provided. In the scroll compressor, a valve accommodating groove that accommodates a discharge port and bypass holes is recessed by a predetermined depth into a rear surface of a non-orbiting scroll, and a valve guide is disposed between the rear surface of the non-orbiting scroll and a rear surface of the back pressure chamber assembly facing the rear surface of the non-orbiting scroll. Bypass valve guide holes into which bypass valves that open and close the bypass holes are slidably inserted are formed in the valve guide. Accordingly, the bypass valves that suppress or prevent overcompression in compression chambers are not fastened to a non-orbiting end plate, which may allow the non-orbiting end plate to be reduced in thickness. As the non-orbiting end plate is reduced in thickness, lengths of the bypass holes may be reduced, thereby decreasing dead volumes in the bypass holes.

公开(公告)号：US11549511B2

公开(公告)日：2023-01-10

申请号：US16953635

申请日：2020-11-20

Applicant: LG ELECTRONICS INC.

Inventor： Changeol Jo

IPC: F04C18/02 ,  F04C29/02

Abstract: A scroll compressor may include a casing having a low pressure portion and a high pressure portion, a refrigerant suction pipe that communicates with the low pressure portion and a refrigerant discharge pipe that communicates with the high pressure portion, a drive motor installed inside of the low pressure portion, an orbiting scroll coupled to the drive motor to perform an orbiting motion, a non-orbiting scroll engaged with the orbiting scroll to form a compression chamber, and a refrigerant guide provided on the non-orbiting scroll to guide a refrigerant suctioned into the low pressure portion to be suctioned into the compression chamber, whereby an increase in specific volume of refrigerant suctioned into the compression chamber may be suppressed, and thus, an amount of refrigerant suctioned into the compression chamber may increase, thereby improving efficiency of the compressor.

公开(公告)号：US11242854B2

公开(公告)日：2022-02-08

申请号：US16929518

申请日：2020-07-15

Applicant: LG ELECTRONICS INC.

Inventor： Suchul Kim ,  Changeol Jo ,  Donghyun Sohn

IPC: F04C18/02 ,  F04C23/00 ,  F04C27/00 ,  F04C29/00

Abstract: A scroll compressor is provided in which a center of a back pressure chamber is eccentrically disposed relative to a center of a fixed scroll. For example, the center of the back pressure chamber may be moved towards a center of an orbiting scroll at a time of discharge, thereby preventing displacement of the fixed scroll and ensuring stability in orbital movement of the orbiting scroll.

公开(公告)号：US12098724B2

公开(公告)日：2024-09-24

申请号：US18138920

申请日：2023-04-25

Applicant: LG ELECTRONICS INC.

Inventor： Changeol Jo ,  Jeonghun Kim ,  Nara Han ,  Jihoon Park

IPC: F04C29/12 ,  F04C18/02 ,  F04C29/00

CPC classification number: F04C29/124 ,  F04C18/0215 ,  F04C18/0261 ,  F04C29/0035

Abstract: A scroll compressor is disclosed. The scroll compressor may include a back pressure hole formed through a non-orbiting scroll and a back pressure chamber assembly such that a compression chamber and a back pressure chamber communicate with each other. A back pressure valve may be disposed inside of the back pressure hole and move along a longitudinal direction of the back pressure hole by a pressure difference between the compression chamber and the back pressure chamber, to vary a flow path area of the back pressure hole. The back pressure valve may include a valve body that extends in an axial direction and a plurality of holes formed through the valve body in the axial direction. With the configuration, pressure pulsation in the back pressure chamber may be suppressed or prevented.

公开(公告)号：US11953003B2

公开(公告)日：2024-04-09

申请号：US18100712

申请日：2023-01-24

Applicant: LG ELECTRONICS INC.

Inventor： Changeol Jo ,  Jeonghun Kim ,  Nara Han ,  Juhwan Yun

IPC: F04C18/02 ,  F04C28/26 ,  F04C29/12

CPC classification number: F04C18/0215 ,  F04C28/26 ,  F04C29/124 ,  F04C29/128

Abstract: A scroll compressor is provided, the scroll compressor having a block insertion groove recessed by a predetermined depth into a rear surface of a non-orbiting scroll to accommodate a discharge port and a plurality of bypass holes, and a retainer block having a bypass valve that opens and closes the plurality of bypass holes fixedly inserted into the block insertion groove. The bypass valve may be fixed to a first axial side surface of the retainer block facing the block insertion groove. Through this, the bypass valve that suppresses or prevents overcompression of a compression chamber is not fastened to a non-orbiting end plate, which may allow the non-orbiting end plate to be reduced in thickness. This may shorten lengths of the plurality of bypass holes and the discharge port by the reduced thickness of the non-orbiting end plate, thereby decreasing a dead volume in the plurality of bypass holes and the discharge port.

公开(公告)号：US20210396228A1

公开(公告)日：2021-12-23

申请号：US16953635

申请日：2020-11-20

Applicant: LG Electronics Inc.

Inventor： Changeol Jo

IPC: F04C18/02

Abstract: A scroll compressor may include a casing having a low pressure portion and a high pressure portion, a refrigerant suction pipe that communicates with the low pressure portion and a refrigerant discharge pipe that communicates with the high pressure portion, a drive motor installed inside of the low pressure portion, an orbiting scroll coupled to the drive motor to perform an orbiting motion, a non-orbiting scroll engaged with the orbiting scroll to form a compression chamber, and a refrigerant guide provided on the non-orbiting scroll to guide a refrigerant suctioned into the low pressure portion to be suctioned into the compression chamber, whereby an increase in specific volume of refrigerant suctioned into the compression chamber may be suppressed, and thus, an amount of refrigerant suctioned into the compression chamber may increase, thereby improving efficiency of the compressor.