Compressor having damped scroll

Patent metadata

Field	Value
Publication number	US-11353022-B2
Application number	US-202016886145-A
Country	US
Kind code	B2
Filing date	May 28, 2020
Priority date	May 28, 2020
Publication date	Jun 7, 2022
Grant date	Jun 7, 2022

Abstract

A compressor may include a shell assembly, orbiting and non-orbiting scrolls, a bearing housing, a bushing, a damper, and a fastener. The bearing housing includes a first aperture. The bushing may include an axial end abutting the bearing housing. The bushing may extend through a second aperture of the non-orbiting scroll. The bushing may include a third aperture. The damper may be received in a pocket that may be defined by and disposed radially between an outer diametrical surface of the bushing and an inner diametrical surface of the non-orbiting scroll. The damper may be at least partially disposed within the second aperture and may encircle the second portion of the bushing. The fastener may include a shaft portion and a flange portion. The shaft portion may extend through the third aperture and into the first aperture. The flange portion may contact a first axial end of the damper.

First claim

What is claimed is:

1. A compressor comprising:
a shell assembly;
an orbiting scroll disposed within the shell assembly and including a first end plate and a first spiral wrap extending from the first end plate;
a non-orbiting scroll including a second end plate and a second spiral wrap extending from the second end plate, the second spiral wrap cooperating with the first spiral wrap to define compression pockets therebetween;
a bearing housing fixed relative to the shell assembly and including a first aperture;
a bushing having an axial end abutting the bearing housing, the bushing extending through a second aperture of the non-orbiting scroll, the bushing including a first portion having a first diameter and a second portion having a second diameter that is smaller than the first diameter, the bushing having a third aperture extending axially therethrough;
a first damper received on the bushing, the first damper at least partially disposed within the second aperture and encircling the second portion of the bushing; and
a fastener including a shaft portion and a flange portion, the shaft portion extending through the third aperture and into the first aperture, the flange portion contacting a first axial end of the first damper,
wherein a second axial end of the first damper contacts an annular ledge of the bushing, and wherein the annular ledge of the bushing defines a transition between the first and second portions of the bushing, and
wherein the compressor further comprises a second damper disposed within the second aperture of the non-orbiting scroll, wherein an axial end of the second damper contacts another annular ledge of the bushing.

2. The compressor of claim 1 , wherein the first damper is a solid annular member formed from an elastomeric material.

3. The compressor of claim 2 , wherein the elastomeric material has a glass transition temperature less than or equal to −20° C., a hardness within the range of 40-95 Shore A, and a damping factor greater than or equal to 0.1 between temperatures of −40° C. and −20° C.

4. The compressor of claim 1 , wherein the second aperture of the non-orbiting scroll includes a first portion having a first diameter and a second portion having a second diameter that is larger than the first diameter of the first portion of the second aperture.

5. The compressor of claim 4 , wherein the first damper is at least partially disposed within the second portion of the second aperture of the non-orbiting scroll.

6. The compressor of claim 5 , wherein the first damper contacts an annular ledge of the non-orbiting scroll that defines a transition between the first and second portions of the second aperture of the non-orbiting scroll.

7. The compressor of claim 1 , wherein another axial end of the second damper contacts a surface of the bearing housing.

8. The compressor of claim 1 , wherein another axial end of the second damper contacts an annular ledge of the non-orbiting scroll.

9. The compressor of claim 1 , wherein the first damper is clamped between the flange portion of the fastener and a surface of the bushing such that the flange portion of the fastener contacts an axial end of the bushing.

10. A compressor comprising:
a shell assembly;
an orbiting scroll disposed within the shell assembly and including a first end plate and a first spiral wrap extending from the first end plate;
a non-orbiting scroll including a second end plate and a second spiral wrap extending from the second end plate, the second spiral wrap cooperating with the first spiral wrap to define compression pockets therebetween;
a bearing housing fixed relative to the shell assembly and including a first aperture;
a bushing having an axial end abutting the bearing housing, the bushing extending through a second aperture of the non-orbiting scroll, the bushing having a third aperture extending axially therethrough;
a first damper received in a pocket defined by and disposed radially between an outer diametrical surface of the bushing and an inner diametrical surface of the non-orbiting scroll, the first damper at least partially disposed within the second aperture and encircling at least a portion of the bushing; and
a fastener including a shaft portion and a flange portion, the shaft portion extending through the third aperture and into the first aperture, the flange portion contacting a first axial end of the first damper,
wherein the non-orbiting scroll includes a plurality of protrusions arranged in a circular pattern around the bushing, and wherein the protrusions contact the fastener.

11. The compressor of claim 10 , wherein the first damper is a solid annular member formed from an elastomeric material, and wherein the elastomeric material has a glass transition temperature less than or equal to −20° C., a hardness within the range of 40-95 Shore A, and a damping factor greater than or equal to 0.1 between temperatures of −40° C. and −20° C.

12. The compressor of claim 10 , wherein a second axial end of the first damper contacts an annular ledge of the bushing, wherein the annular ledge of the bushing defines a transition between first and second portions of the bushing, wherein the first portion of the bushing has a first diameter, wherein the second portion of the bushing has a second diameter that is different than the first diameter.

13. The compressor of claim 12 , wherein the second aperture of the non-orbiting scroll includes a first portion having a first diameter and a second portion having a second diameter that is larger than the first diameter of the first portion of the second aperture.

14. The compressor of claim 13 , wherein the first damper is at least partially disposed within the second portion of the second aperture of the non-orbiting scroll, and wherein the first damper contacts an annular ledge of the non-orbiting scroll that defines a transition between the first and second portions of the second aperture of the non-orbiting scroll.

15. The compressor of claim 14 , further comprising a second damper disposed within the second aperture of the non-orbiting scroll, wherein an axial end of the second damper contacts another annular ledge of the bushing.

16. The compressor of claim 15 , wherein another axial end of the second damper contacts a surface of the bearing housing.

17. The compressor of claim 15 , wherein another axial end of the second damper contacts an annular ledge of the non-orbiting scroll.

18. The compressor of claim 10 , wherein the first damper is clamped between the flange portion of the fastener and a surface of the bushing such that the flange portion of the fastener contacts an axial end of the bushing.

19. A compressor comprising:
a shell assembly;
an orbiting scroll disposed within the shell assembly and including a first end plate and a first spiral wrap extending from the first end plate;
a non-orbiting scroll including a second end plate and a second spiral wrap extending from the second end plate, the second spiral wrap cooperating with the first spiral wrap to define compression pockets therebetween;
a bearing housing fixed relative to the shell assembly and including a first aperture;
a bushing having an axial end abutting the bearing housing, the bushing extending through a second aperture of the non-orbiting scroll, the bushing having a third aperture extending axially therethrough;
a first damper received in a pocket defined by and disposed radially between an outer diametrical surface of the bushing and an inner diametrical surface of the non-orbiting scrol

Assignees

• Emerson Climate Technologies

Inventors

• Oh Jonyeon
• Shepherd Joseph M
• Knapke Brian J
• Ramalingam Srinivasan
• Lin Gui
• Baker Steven J
• Strand Miles E

Classifications

• F04C29/068

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

• F04C29/063

  Sound absorbing materials · CPC title

• F04C18/0215 Primary

  where only one member is moving · CPC title

• F05C2225/00

  Synthetic polymers, e.g. plastics; Rubber · CPC title

• F04C29/06

  Silencing (gas-flow silencers or exhaust apparatus for machines or engines in general F01N) · CPC title