公开(公告)号：US20230023176A1

公开(公告)日：2023-01-26

申请号：US17960241

申请日：2022-10-05

Applicant: LG ELECTRONICS INC.

Inventor： Jun Chul OH ,  Kyungmin KIM ,  Seheon CHOI

IPC: F04D29/58 ,  F04D17/10 ,  F04D29/051 ,  F04D29/053 ,  F04D29/054

Abstract: A turbo compressor may include a motor casing having a motor space; a drive motor provided in the motor space; a rotary shaft coupled to the drive motor and configured to transmit a rotational force; an impeller coupled to a first side of the rotary shaft and configured to rotate together with a rotation of the rotary shaft; a thrust bearing runner coupled to a second side of the rotary shaft opposite to the first side and configured to rotate together with the rotation of the rotary shaft; a bearing casing to support the thrust bearing runner; an inlet flow path configured to guide fluid introduced into the impeller; a discharge flow path configured to guide fluid discharged from the impeller; and a cooling flow path branched from the discharge flow path and configured to guide the fluid to the bearing casing.

公开(公告)号：US20210172458A1

公开(公告)日：2021-06-10

申请号：US17055289

申请日：2019-04-24

Applicant: LG ELECTRONICS INC.

Inventor： Jun Chul OH ,  Kyungmin KIM ,  Seheon CHOI

IPC: F04D29/58 ,  F04D17/10 ,  F04D29/051 ,  F04D29/053

Abstract: A turbo compressor comprises a rotary shaft including a rotor; a first impeller coupled to one side of the rotary shaft, a thrust bearing runner coupled between the first impeller and the rotary shaft, an impeller sleeve compressed and coupled between the first impeller and the thrust bearing runner, a second impeller coupled to the other side of the rotary shaft, and a tie rod passing through the first impeller and a thrust bearing and fastened to the rotary shaft.

公开(公告)号：US20200291987A1

公开(公告)日：2020-09-17

申请号：US16812806

申请日：2020-03-09

Applicant: LG Electronics Inc.

Inventor： Changgook MOON ,  Jun Chul OH ,  Seheon CHOI

IPC: F16C17/04

Abstract: Disclosed herein is a thrust bearing for a turbo compressor, the thrust bearing has a structure that is modified in response to a portion where a deformation amount of a thrust runner is relatively large on the basis of magnitude of a force applied at the time of rotation of a shaft of a turbo compressor, to maintain a thickness of an oil film constantly and to increase a load supporting force of the thrust bearing, thereby ensuring improved durability of the thrust bearing.