公开(公告)号：US10731647B2

公开(公告)日：2020-08-04

申请号：US15345561

申请日：2016-11-08

Applicant: LG ELECTRONICS INC.

Inventor： Jingyu Lee ,  Jeonghyeon Park ,  Yeongcheol Ko

IPC: F04C28/06 ,  F25B49/02 ,  F04C28/26 ,  F25B31/02 ,  F04C23/00 ,  F04C18/356 ,  F04C29/12 ,  F04B49/06

Abstract: A high pressure compressor according to the present disclosure and a refrigerating cycle device to which the high pressure compressor is applied may include a casing having a sealed inner space; drive motor provided in the inner space of the casing; a compression unit provided in the inner space of the casing, and provided with a compression space for compressing refrigerant, and provided with a suction port for guiding refrigerant into the compression space, and provided with a discharge port for guiding refrigerant compressed in the compression space into the inner space of the casing a discharge valve provided in the compression unit to selectively open or close the discharge port according to a difference between a pressure of the inner space of the casing and a pressure of the compression space of the compression unit; a first valve configured to suppress refrigerant discharged from the inner space of the casing from flowing backward into the inner space of the casing; a bypass pipe connected between a discharge side and a suction side of the compression unit based on the compression unit; and a second valve provided at the bypass pipe to selectively open or close the bypass pipe.

公开(公告)号：US10309700B2

公开(公告)日：2019-06-04

申请号：US15212416

申请日：2016-07-18

Applicant: LG ELECTRONICS INC.

Inventor： Jingyu Lee ,  Jeonghyeon Park ,  Yeongcheol Ko

IPC: F25B49/02 ,  F25B31/02 ,  F04C18/356 ,  F04C28/26 ,  F04C29/00 ,  F25B13/00 ,  F25B41/04 ,  F04C23/00

Abstract: A high pressure compressor may include a casing in which a refrigerant discharged from a compression device is filled into an inner space provided with a drive motor, a suction pipe directly connected to a suction port of the compression device, a discharge pipe in communication with the inner space of the casing, a first valve provided at the discharge pipe or the suction pipe to control a flow of the discharged refrigerant from a high pressure side to a low pressure side when the drive motor is stopped, a bypass pipe connected between a discharge side and a suction side based on the compression device, and a second valve provided at the bypass pipe to move the refrigerant at the high pressure side to the low pressure side through the bypass pipe, thereby allowing a differential pressure operation to continue when the compressor is stopped.