公开(公告)号：US20230304706A1

公开(公告)日：2023-09-28

申请号：US18013230

申请日：2021-07-01

Applicant: LG ELECTRONICS INC.

Inventor： Changgook MOON ,  Junchul OH ,  Hyojo BAE ,  Seheon CHOI ,  Kyungmin KIM ,  Jinhyeok MUN ,  Byeongchul LEE

IPC: F25B31/00 ,  F04D29/42 ,  F04D25/06 ,  F04D29/056 ,  F04D29/053 ,  F04D17/10 ,  F25B31/02

CPC classification number: F25B31/006 ,  F04D17/10 ,  F04D25/06 ,  F04D29/053 ,  F04D29/056 ,  F04D29/4206 ,  F25B31/026

Abstract: A turbo compressor and a refrigeration cycle device having a turbo compressor are provided. The turbo compressor includes a housing having a motor chamber; a drive motor having a stator and a rotor in the motor chamber of the housing; a first compression portion and a second compression portion, respectively, provided on opposite ends of a rotary shaft; a connecting passage that connects an exit of the first compression portion and an entrance of the second compression portion; an inlet passage that penetrates a first side of the housing to communicate with an inside of the motor chamber and guide a refrigeration fluid to the motor chamber; and an outlet passage that penetrates a second side of the housing to communicate with the inside of the motor chamber and guide the refrigeration fluid in the motor chamber out of the housing. Thus, a gas foil bearing provided in the motor chamber may be quickly actuated by supplying the refrigeration fluid to the motor chamber, and at a same time, heat generated from the motor chamber may be quickly dissipated even in a highspeed operation, thereby improving efficiency of the turbo compressor and a refrigeration cycle device having a turbo compressor.