Compressor having a sleeve guide assembly

Patent metadata

Field	Value
Publication number	US-10458409-B2
Application number	US-201715597425-A
Country	US
Kind code	B2
Filing date	May 17, 2017
Priority date	Jun 6, 2016
Publication date	Oct 29, 2019
Grant date	Oct 29, 2019

Abstract

A compressor may include a shell, a bearing housing, an orbiting scroll, and a non-orbiting scroll. The bearing housing is supported within the shell and includes a central body and a plurality of arms. Each arm extends radially outwardly from the central body and has a first aperture. The orbiting scroll is supported on the bearing housing. The non-orbiting scroll is meshingly engaged with the orbiting scroll and includes a plurality of second apertures. Each second aperture receives a plurality of bushings and a fastener. The fastener extends through the bushings and into a corresponding one of the first apertures in the bearing housing to rotatably secure the non-orbiting scroll relative to the bearing housing while allowing relative axial movement between the non-orbiting scroll and the bearing housing.

First claim

What is claimed is:

1. A compressor comprising:
a shed;
a bearing housing supported within the shell, the bearing housing including a central body and a plurality of arms extending radially outward from the central body, each of the plurality of arms having a first aperture;
an orbiting scroll supported on the bearing housing; and
a non-orbiting scrod meshingly engaged with the orbiting scroll and including a plurality of second apertures, each of the plurality of second apertures receiving a plurality of bushings and a fastener, the fastener extending through the plurality of bushings and into a corresponding one of the first apertures in the bearing housing to rotatably secure the non-orbiting scroll relative to the bearing housing while allowing relative axial movement between the non-orbiting scroll and the bearing housing,
wherein a first longitudinal axis of a first hushing of the plurality of bushings inside each of the plurality of second apertures is radially misaligned with a second longitudinal axis of a second bushing of the plurality of bushings inside each of the plurality of second apertures.

2. The compressor of claim 1 , wherein one of the plurality of bushings inside each of the plurality of second apertures extends axially out of the plurality of second apertures and abuts a corresponding arm of the plurality of arms of the bearing housing.

3. The compressor of claim 2 , wherein another one of the plurality of bushings inside each of the plurality of second apertures extends axially out of the plurality of second apertures and axially separates a head of the fastener from a flange of the non-orbiting scroll.

4. The compressor of claim 3 , wherein one of the plurality of bushings is axially longer than another of the plurality of bushings.

5. The compressor of claim 1 , wherein the first and second longitudinal axes are radially misaligned with a third longitudinal axis of a corresponding one of the plurality of second apertures.

6. The compressor of claim 1 , wherein each of the plurality of second apertures receives two bushings.

7. The compressor of claim 1 , wherein the fasteners threadably engage the first apertures.

8. The compressor of claim 1 , further comprising a floating seal assembly cooperating with the non-orbiting scroll to define a biasing chamber containing intermediate-pressure fluid axially biasing the non-orbiting scroll toward the orbiting scroll.

9. The compressor of claim 1 , wherein the non-orbiting scroll includes a flange through which at least one of the plurality of second apertures extends.

10. The compressor of claim 1 , wherein the non-orbiting scroll includes a plurality of radially outwardly extending portions, and wherein each of the plurality of second apertures extends through a respective one of the plurality of radially outwardly extending portions.

11. The compressor of claim 1 , wherein an axial end of the first bushing of the plurality of bushings inside each of the plurality of second apertures abuts an axial end of the second bushing of the plurality of bushings inside each of the plurality of second aperture such that the first and second bushings of the plurality of bushings inside each of the plurality of second apertures is stacked upon each other.

12. A compressor comprising:
a shell;
a bearing housing fixed within the shell, the bearing housing including a central body and a plurality of arms extending radially outward from the central body, each of the plurality of the arms having a first aperture;
a non-orbiting scroll including a plurality of second apertures;
an orbiting scroll supported on the bearing housing and meshingly engaged with the non-orbiting scroll;
a plurality of bushings each having a third aperture, each of the plurality of second apertures in the non-orbiting scroll receiving at least two of the plurality of bushings; and
a plurality of fasteners rotatably securing the non-orbiting scroll relative to the bearing housing, each of the plurality of fasteners extending through the third apertures of the plurality of corresponding bushings and are received in a corresponding one of the first apertures in the bearing housing,
wherein an axial end of a first one of the at least two of the plurality of bushings inside each of the plurality of second apertures abuts an axial end of a second one of the at least two of the plurality of bushings inside each of the plurality of second apertures such that the first one of the at least two of the plurality of bushings is stacked upon the second one of the at least two of the plurality of bushings.

13. The compressor of claim 12 , wherein one of the at least two of the plurality of bushings inside each of the plurality of second apertures extends axially out of the plurality of the second apertures and abuts a corresponding arm of the plurality of arms of the bearing housing.

14. The compressor of claim 13 , wherein another one of the at least two of the plurality of bushings inside each of the plurality of second apertures extends axially out of the plurality of second apertures and axially separates a head of the fastener from a flange of the non-orbiting scroll.

15. The compressor of claim 14 , wherein one of the at least two of the plurality of bushings is axially longer than another of the at least two of the plurality of bushings.

16. The compressor of claim 12 , wherein a first longitudinal axis of the first one of the at least two of the plurality of bushings inside each of the plurality of second apertures is radially misaligned with a second longitudinal axis of the second one of the at least two of the plurality of bushings inside each of the plurality of second apertures, wherein one of the first and second longitudinal axes of the at least two of the plurality of bushings inside each of the plurality of second apertures is radially misaligned with a third longitudinal axis of a corresponding second aperture of the plurality of second apertures.

17. The compressor of claim 12 , wherein each of the plurality of second apertures receives only two of the plurality of bushings.

18. The compressor of claim 12 , wherein the fasteners threadably engage the first apertures.

19. The compressor of claim 12 , further comprising a floating seal assembly cooperating with the non-orbiting scroll to define a biasing chamber containing intermediate-pressure fluid axially biasing the non-orbiting scroll toward the orbiting scroll.

20. The compressor of claim 12 , wherein the non-orbiting scroll includes a flange through which at least one of the plurality of second apertures extends.

21. The compressor of claim 12 , wherein the non-orbiting scroll includes a plurality of radially outwardly extending portions, and wherein each of the plurality of second apertures extends through a respective one of the plurality of radially outwardly extending portions.

22. The compressor of claim 12 , wherein clearance gaps are defined between the non-orbiting scroll and at least portions of the at least two of the plurality of bushings.

23. The compressor of claim 12 , wherein clearance gaps are defined by at least portions of the at least two of the plurality of bushings and at least portions of the fastener received in the third apertures of the at least two bushings.

Assignees

• Emerson Climate Technologies

Inventors

• Su Xiaogeng
• Ramalingam Srinivasan

Classifications

• F04C2240/56

  Bearing bushings or details thereof · CPC title

• F04C27/00

  Sealing arrangements in rotary-piston pumps specially adapted for elastic fluids · CPC title

• F04C29/0021 Primary

  Systems for the equilibration of forces acting on the pump (interstice adjustment other than by fluid pressure F01C21/102) · CPC title

• F04C2240/805

  Fastening means, e.g. bolts · CPC title

• F04C29/068

  the silencing means being arranged inside the pump housing · CPC title