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.

公开(公告)号：US20190219055A1

公开(公告)日：2019-07-18

申请号：US15960266

申请日：2018-04-23

Applicant: LG ELECTRONICS INC.

Inventor： Minjae KIM ,  Jaeheon JEONG ,  Jinhak CHOI

IPC: F04C28/26 ,  F04C18/02 ,  F04C27/00

CPC classification number: F04C28/265 ,  F04C18/0215 ,  F04C27/008

Abstract: A scroll compressor including a bypass passage to guide compressed refrigerant from a compression chamber to a low pressure portion of the compressor; a valve that is inserted in a valve receiving portion and slides between first and second positions in which the bypass passage is respectively closed and opened; a ring-shaped seal between an outer peripheral surface of the valve and an inner peripheral surface of the valve receiving portion; and a seal groove formed in at least one of the outer peripheral surface of the valve and the inner peripheral surface of the valve receiving portion, the seal being inserted into the seal groove, wherein at least one of the outer peripheral surface of the valve, the inner peripheral surface of the valve receiving portion, and the inner peripheral surface of the seal groove has an inclined surface that is inclined in the opening/closing direction of the valve.