公开(公告)号：US12078175B2

公开(公告)日：2024-09-03

申请号：US17919934

申请日：2021-03-08

Applicant: LG Electronics Inc.

Inventor： Jaeha Lee ,  Sungyong Ahn ,  Howon Lee

IPC: F04C29/12 ,  F04C18/02 ,  F04C23/00 ,  F04C29/02 ,  F04C29/04 ,  F04C29/06

CPC classification number: F04C29/124 ,  F04C18/0215 ,  F04C29/023 ,  F04C29/065

Abstract: A compressor comprises a discharge valve which is provided so as to be coupled to a fixed scroll and open/close a discharge hole. The discharge valve includes a coupling portion which is coupled to one surface of the fixed scroll, the surface facing a muffler, and a head portion extending from the coupling portion and opening/closing the discharge hole. The head portion may be provided with a communicating hole for allowing the discharge hole and the muffler to be in communication with each other. Accordingly, a backflow of a compressed refrigerant is prevented during the operation of the compressor, and thus over-compression of the refrigerant can be prevented. Also, when the compressor stops operating, only a certain amount of the discharged refrigerant is allowed to flow backward to prevent a reverse rotation of an orbiting scroll and a decrease in the oil level of the oil stored in a case.

公开(公告)号：US11268510B2

公开(公告)日：2022-03-08

申请号：US16526421

申请日：2019-07-30

Applicant: LG Electronics Inc.

Inventor： Jaeha Lee ,  Jinho Kim ,  Sungyong Ahn ,  Yoonsung Choi

IPC: F04C15/06 ,  F04C29/12 ,  F04C18/02 ,  F04B39/10 ,  F04C23/00

Abstract: A fluid compressor is provided. The fluid compressor includes a case including an inlet configured to introduce fluid to be compressed, a compression unit including a compression chamber configured to compress the fluid introduced into the case, and a discharge port configured to discharge the compressed fluid to the outside of the compression chamber, a motor configured to drive the compression unit, and a valve configured to open and close the discharge port. The valve includes a fastening portion coupled to the compression unit to be spaced a first distance from the discharge port.

公开(公告)号：US11002287B2

公开(公告)日：2021-05-11

申请号：US15971354

申请日：2018-05-04

Applicant: LG Electronics Inc.

Inventor： Sungyong Ahn ,  Seheon Choi

IPC: F04D29/44 ,  F04D29/58 ,  F04D29/60 ,  F04D29/40 ,  F25B31/00 ,  F04D25/06 ,  F04D29/051 ,  F04D29/057 ,  F25B31/02 ,  F04D29/62 ,  F04D29/041 ,  F04D17/08 ,  F04D29/52 ,  F25B1/053

Abstract: A turbo compressor includes a driving unit including a stator and a rotor that are configured to generate a rotational force and a rotary shaft that is connected to and rotated by the rotor, an impeller connected to the rotary shaft to pressurize a suction refrigerant in the radial direction of the rotary shaft and a casing that receives the driving unit and the impeller and supports the rotary shaft. The casing includes a first shell to which the stator is fixed and that rotatably supports the rotary shaft, and a second shell that is spaced apart from the first shell and surrounds the first shell. A shell passage is defined between the first and second shells. The discharged refrigerant cools the driving unit, which improves the efficiency of the compressor.