公开(公告)号：US20230400024A1

公开(公告)日：2023-12-14

申请号：US18109559

申请日：2023-02-14

Applicant: LG ELECTRONICS INC.

Inventor： Changeol JO ,  Jeonghun KIM ,  Nara HAN ,  Jihoon PARK

IPC: F04C18/02 ,  F04C29/12

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：US20250146488A1

公开(公告)日：2025-05-08

申请号：US18836795

申请日：2022-11-17

Applicant: LG ELECTRONICS INC.

Inventor： Changeol JO ,  Jeonghun KIM ,  Nara HAN ,  Juhwan YUN

IPC: F04C18/02 ,  F04C28/24

Abstract: A scroll compressor is disclosed. The scroll compressor has back pressure holes which are formed in a non-orbiting scroll and a back pressure chamber assembly, and communicate a compression chamber and a back pressure chamber. In addition, a back pressure valve is provided inside the back pressure hole to change the passage area of the back pressure hole by moving along the longitudinal direction of the back pressure hole due to the pressure difference between the compression chamber and the back pressure chamber. Due to the back pressure valve, pressure pulsation in the back pressure chamber can be improved.

公开(公告)号：US20240077080A1

公开(公告)日：2024-03-07

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 ,  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：US20240102469A1

公开(公告)日：2024-03-28

申请号：US18367576

申请日：2023-09-13

Applicant: LG ELECTRONICS INC.

Inventor： Jeonghun KIM ,  Changeol JO ,  Nara HAN ,  Juhwan YUN

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

CPC classification number: F04C18/0215 ,  F04C28/26 ,  F04C29/128 ,  F04C2270/185

Abstract: A scroll compressor is provided that may include a block insertion groove configured 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 configured to open or close the at least one bypass hole inserted into the block insertion groove. The at least one bypass hole may include a first bypass hole and a second bypass hole. The at least one bypass valve may include a first bypass valve configured to open or close the first bypass hole and a second bypass valve configured 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 that suppress or prevent overcompression in a compression chamber are not fastened to the non-orbiting end plate, which may allow the non-orbiting end plate to be made thin. As the non-orbiting end plate may be reduced in thickness, a length of the first and second bypass holes may be reduced, thereby decreasing a dead volume in the first and second bypass holes.

公开(公告)号：US20220154718A1

公开(公告)日：2022-05-19

申请号：US17502124

申请日：2021-10-15

Applicant: LG ELECTRONICS INC.

Inventor： Minjin LEE ,  Minjae KIM ,  Jeonghun KIM ,  Jinhak CHOI ,  Yongbae LEE

IPC: F04C18/02 ,  F04C23/00 ,  F04C29/06

Abstract: A scroll compressor may include a compressor chamber, a back pressure chamber, a first intermediate pressure hole, a second intermediate pressure hole, a third intermediate pressure hole, a back pressure switching unit configured to selectively connect the first intermediate pressure hole and the back pressure chamber or the second intermediate pressure hole and the back pressure chamber, a capacity variable unit configured to selectively open and close a capacity variable passage, and a mode switching unit provided outside of the casing and configured to control opening and closing operations of the back pressure switching unit and the capacity variable unit. This may simplify the structure of the back pressure switching unit and the mode switching unit, thereby maintaining compactness of the compressor while installing the back pressure switching unit inside of the casing, and thus, operation reliability of the mode switching unit may be secured and maintenance facilitated.