Compressor flow restrictor

Patent metadata

Field	Value
Publication number	US-11892211-B2
Application number	US-202217749997-A
Country	US
Kind code	B2
Filing date	May 20, 2022
Priority date	May 23, 2021
Publication date	Feb 6, 2024
Grant date	Feb 6, 2024

Abstract

A climate-control system may include a first compressor, a second compressor, a suction manifold, and a flow restrictor. The first and second compressors each include a shell and a compression mechanism. The shells define suction chambers from which the compression mechanisms draw working fluid. The shells include suction inlet fittings through which working fluid is drawn into the suction chambers. The suction inlet fittings are fluidly connected to the suction manifold. The suction manifold provides suction-pressure working fluid to the suction inlet fittings of the first and second compressors. The flow restrictor may be at least partially disposed within the suction manifold.

First claim

What is claimed is:

1. A climate-control system comprising:
a first compressor including a first shell and a first compression mechanism, the first shell defining a first suction chamber from which the first compression mechanism draws working fluid, the first shell including a first suction inlet fitting through which working fluid is drawn into the first suction chamber;
a second compressor including a second shell and a second compression mechanism, the second shell defining a second suction chamber from which the second compression mechanism draws working fluid, the second shell including a second suction inlet fitting through which working fluid is drawn into the second suction chamber;
a suction manifold fluidly connected to the first and second suction inlet fittings; and
a flow restrictor disposed at least partially within the suction manifold, wherein the flow restrictor includes a body, a flange, and an aperture extending through the body and the flange, and wherein the flange extends radially outward from the body.

2. The climate-control system of claim 1 , wherein the flow restrictor is brazed to the suction manifold.

3. The climate-control system of claim 1 , wherein an outer diameter of the flange is larger than an inner diameter of the suction manifold.

4. The climate-control system of claim 3 , wherein a braze material fixedly attaches the flow restrictor to the suction manifold.

5. The climate-control system of claim 4 , wherein the braze material contacts the flange and an axial end surface of the suction manifold.

6. The climate-control system of claim 5 , wherein the braze material contacts a chamfered surface of the flange.

7. The climate-control system of claim 5 , wherein the flow restrictor is partially received in an end of the suction manifold and engages the first suction inlet fitting of the first compressor.

8. The climate-control system of claim 7 , wherein the flow restrictor extends out of the end of the suction manifold and is concentric with the end of the suction manifold and the first suction inlet fitting.

9. The climate-control system of claim 1 , wherein the first shell defines a first lubricant sump disposed within the first suction chamber, wherein the second shell defines a second lubricant sump disposed within the second suction chamber, and wherein the climate-control system further comprises a lubricant equalization conduit engaging the first and second shells and fluidly connecting the first lubricant sump with the second lubricant sump.

10. The climate-control system of claim 1 , wherein the flow restrictor is partially received in a first end of the suction manifold and engages the first suction inlet fitting of the first compressor, wherein a second end of the suction manifold that engages the second suction inlet fitting, and wherein the second end of the suction manifold does not include a flow restrictor.

11. A climate-control system comprising:
a first compressor including a first shell and a first compression mechanism, the first shell including a first suction inlet fitting through which working fluid is drawn into the first compressor for compression in the first compression mechanism;
a second compressor including a second shell and a second compression mechanism, the second shell including a second suction inlet fitting through which working fluid is drawn into the second compressor for compression in the second compression mechanism;
a suction manifold fluidly connected to the first and second suction inlet fittings; and
a flow restrictor disposed at least partially within the suction manifold, wherein the flow restrictor includes a body, a flange, and an aperture extending through the body and the flange, and wherein the flange extends radially outward from the body.

12. The climate-control system of claim 11 , wherein the flow restrictor is brazed to the suction manifold.

13. The climate-control system of claim 11 , wherein an outer diameter of the flange is larger than an inner diameter of the suction manifold.

14. The climate-control system of claim 13 , wherein a braze material fixedly attaches the flow restrictor to the suction manifold.

15. The climate-control system of claim 14 , wherein the braze material contacts the flange and an axial end surface of the suction manifold.

16. The climate-control system of claim 15 , wherein the braze material contacts a chamfered surface of the flange.

17. The climate-control system of claim 15 , wherein the flow restrictor is partially received in an end of the suction manifold and engages the first suction inlet fitting of the first compressor.

18. The climate-control system of claim 17 , wherein the flow restrictor extends out of the end of the suction manifold and is concentric with the end of the suction manifold and the first suction inlet fitting.

19. The climate-control system of claim 11 , wherein the first shell defines a first suction chamber and a first lubricant sump disposed within the first suction chamber, wherein the second shell defines a second suction chamber and a second lubricant sump disposed within the second suction chamber, and wherein the climate-control system further comprises a lubricant equalization conduit engaging the first and second shells and fluidly connecting the first lubricant sump with the second lubricant sump.

20. The climate-control system of claim 19 , wherein the flow restrictor is partially received in a first end of the suction manifold and engages the first suction inlet fitting of the first compressor, wherein a second end of the suction manifold that engages the second suction inlet fitting, and wherein the second end of the suction manifold does not include a flow restrictor.

21. The climate-control system of claim 11 , wherein at least one of the flow restrictor and the suction manifold includes markings indicating a size of an inner diameter of the flow restrictor.

Assignees

• Copeland Lp

Inventors

• Witt Brandon Jerome
• Landfair Philip L
• Vaghela Vishal Kumar
• Shinde Satyam Anandrao

Classifications

• F04C2270/24

  Level of liquid, e.g. lubricant or cooling liquid · CPC title

• F04C2210/26

  Refrigerants with particular properties, e.g. HFC-134a · CPC title

• F04C18/356

  with vanes reciprocating with respect to the outer member · CPC title

• F04C18/344

  with vanes reciprocating with respect to the inner member · CPC title

• F04C18/0215

  where only one member is moving · CPC title