Bearing Supporting Assembly and Machining Method Thereof, and Centrifugal Compressor

Patent metadata

Field	Value
Publication number	US-2022010812-A1
Application number	US-201917289077-A
Country	US
Kind code	A1
Filing date	Oct 24, 2019
Priority date	Dec 25, 2018
Publication date	Jan 13, 2022
Grant date	—

Abstract

The present disclosure relates to a bearing supporting assembly and a machining method thereof, and a centrifugal compressor. The bearing supporting assembly includes: bearing supports, provided with through holes for mounting radial bearings; and a fixing plate, detachably mounted at one end of each of the bearing supports along an axial direction, sides, away from the bearing supports, of the fixing plates being configured to mount first thrust bearings.

First claim

1 . A hearing supporting assembly, comprising:
a bearing support, provided with a through hole; a fixing plate, detachably mounted at one end of the bearing support along an axial direction of the through hole; a radial bearing, mounted in the through hole; and a first thrust bearing, mounted on a side, away from the bearing support, of the fixing plate.

2 . The bearing supporting assembly according to claim 1 , wherein the fixing plate is configured to limit a displacement of the radial bearing along the axial direction.

3 . The bearing supporting assembly according to claim 1 , wherein a locating ring is arranged at one end. facing towards the bearing support, of the fixing plate, the bearing support is provided with an annular first groove, the locating ring is arranged into the first groove, and an inner wall of the locating ring engages with an outer wall of a partial length section of the radial bearing.

4 . The bearing supporting assembly according to claim 1 , further comprising a shell, wherein a first end of the bearing support is connected to the fixing plate, a second end of the bearing support is connected to the shell, and radial outline dimensions of the bearing support gradually increase from the first end to the second end thereof.

5 . The bearing supporting assembly according to claim 1 , further comprising a shell, wherein a spigot is formed at one end. connected to the shell, of the bearing support, and is configured to perform first location on connection between the bearing support and the shell.

6 . The bearing supporting assembly according to claim 5 , further comprising a pin configured to perform second location on connection between the bearing support and the shell.

7 . The bearing supporting assembly according to claim 1 , wherein the bearing support is provided with a vent hole configured to communicate a space where the radial bearing is located with a space where the first thrust bearing is located.

8 . A centrifugal compressor, comprising the bearing supporting assembly according to claim 1 .

9 . The centrifugal compressor according to claim 8 , further comprising: a main shaft, a diffuser, a thrust disk and a second thrust bearing, wherein the thrust disk is configured to rotate together with the main shaft and is located between the diffuser and the fixing plate along the axial direction: and
the first thrust bearing is arranged at one end. away from the bearing support, of the fixing plate, and the second thrust bearing is arranged at one end. close to the fixing plate, of the diffuser.

10 . The centrifugal compressor according to claim 9 , wherein a clearance between one side of the thrust disk and the first thrust bearing and a clearance between the other side of the thrust disk and the second thrust bearing are limited through mutual abutting of the diffuser and the fixing plate.

11 . The centrifugal compressor according to claim 10 , wherein a second groove is formed at one end. close to the fixing plate, of the diffuser, the second thrust bearings is arranged at the bottom of the second groove along an axial direction, and the thrust disk is located in the second groove.

12 . The centrifugal compressor according to claim 9 , wherein at least one of the first thrust bearing, the second thrust bearing and the radial bearing is an air-suspending bearing.

13 . A machining method of the bearing supporting assembly according to claim 1 , comprising:
assembling the bearing support and the shell into a combined body; locating and clamping the combined body on machining equipment; and machining the through hole of the bearing support and an end face for mounting the fixing plate to a preset size through one-time location and clamping.

14 . The machining method according to claim 13 , wherein two bearing supports are arranged in the shell at intervals along the axial direction and after the two bearing supports and the shell are assembled into the combined body, machining the through holes of the bearing supports comprises:
machining the through holes of the two bearing supports to the preset size through one-time location and clamping.

15 . The machining method according to claim 14 . wherein the step of machining the through holes of the two bearing supports to a preset size through one-time location and clamping comprises:
sequentially machining the through holes of the two bearing supports to the preset size from one side of the shell.

16 . The machining method according to claim 13 , wherein a spigot is formed at one end, connected to the shell, of the bearing support; and the step of assembling the bearing support and the shell into the combined body comprises:
assembling the bearing support and the shell through the spigot to perform first location; fixing the bearing support and the shell through a fastener; and after fixing a flange disk of the bearing support and the shell, punching a pin to perform second location.

17 . The machining method according to claim 13 , wherein after machining, the machining method further comprises:
disassembling the combined body formed by assembling the bearing support and the shell, so as to mount the radial bearing in a slate where the bearing support is separated from the shell.

Assignees

• Gree Electric Appliances Inc Zhuhai

Inventors

• Liu Hua
• Zhang Zhiping
• Li Hongbo
• Zhong Ruixing
• Chen Yuhui
• Ye Wenteng
• Qi Jingli
• Liu Sheng

Classifications

• F16C35/02

  in the case of sliding-contact bearings · CPC title

• F16C17/107 Primary

  with at least one surface for radial load and at least one surface for axial load · CPC title

• F04D29/624 Primary

  especially adapted for elastic fluid pumps · CPC title

• F04D29/057 Primary

  hydrostatic; hydrodynamic · CPC title

• F05D2240/52

  Axial thrust bearings · CPC title