Scroll compressor with unmachined separator plate and method of making same

Patent metadata

Field	Value
Publication number	US-9951772-B2
Application number	US-201514841263-A
Country	US
Kind code	B2
Filing date	Aug 31, 2015
Priority date	Jun 18, 2015
Publication date	Apr 24, 2018
Grant date	Apr 24, 2018

Abstract

A scroll compressor includes scroll compressor bodies, which, in turn, include a fixed scroll compressor body and a moveable scroll compressor body. The scroll compressor bodies have respective bases and respective scroll ribs that project from the respective bases, and which mutually engage about an axis for compressing fluid. The scroll compressor also includes a housing to house the scroll compressor bodies. A separator plate is configured to separate a high-pressure gas chamber from a low-pressure gas chamber within the housing. The separator plate has no machined surfaces, and has an outer perimeter portion which is attached to an unmachined inner surface of the housing. Having no machined surfaces indicates that no material is removed from the separator plate during its manufacture apart from operations to form initial inner and outer diameters of the separator plate.

First claim

What is claimed is:

1. A method of manufacturing a scroll compressor comprising:
assembling scroll compressor bodies having respective bases and respective scroll ribs that project from the respective bases and which mutually engage about an axis for compressing fluid;
assembling a housing shell section over the scroll compressor bodies;
constructing a separator plate, wherein constructing a separator plate comprises:
piercing an inner portion of a metal blank of substantially constant thickness and trimming a perimeter portion of the metal blank, to form an annular member;
forming the annular member into a frusto-conical shape having an axially-extending curved outer wall, and a central opening having an axially-extending curved inner wall;
wherein no surface of the annular member is machined;

assembling the axially-extending curved inner wall to a central hub of one of the scroll compressor bodies;
press-fitting the separator plate into the housing; and
attaching the axially-extending curved outer wall to an unmachined inner surface of the housing shell section.

2. The method of claim 1 , wherein attaching the axially-extending curved outer wall to the unmachined inner surface of the housing shell section comprises welding the axially-extending curved outer wall to the unmachined inner surface of the housing shell section.

3. The method of claim 1 , wherein forming a central opening having an axially-extending curved inner wall comprises forming a central opening having an axially-extending curved inner wall having a cylindrical portion.

4. The method of claim 1 , wherein constructing a separator plate comprises constructing a separator plate having a substantially constant thickness.

5. The method of claim 1 , wherein forming the annular member comprises forming the annular member with a substantially constant thickness between 2.5 and 10.0 mm.

6. The method of claim 1 , wherein constructing a separator plate further comprises forming the axially-extending curved outer wall and the axially-extending curved inner wall using a non-material-removal finishing operation.

7. The method of claim 1 , wherein the piercing step and the trimming step are performed simultaneously by stamping the metal blank to form the annular member such that an outer diameter and an inner diameter of the annular member are formed simultaneously by the stamping operation.

8. The method of claim 7 , wherein stamping the metal blank to form the annular member such that the outer diameter and the inner diameter of the annular member are formed simultaneously comprises stamping the metal blank on a hard tool configured to restrain movement of the metal blank.

9. The method of claim 1 , wherein the piercing step is performed after the forming of the annular member into a frusto-conical shape.

10. A method for manufacturing a separator plate having no machined surfaces, the separator plate used in a scroll compressor, the method comprising:
piercing an inner portion of a metal blank of substantially constant thickness and trimming a perimeter portion of the metal blank, to form an annular member;
forming the annular member into a frusto-conical shape having an axially-extending curved outer wall, and a central opening having an axially-extending curved inner wall without machining; and
shaping an outer periphery and an inner periphery of the annular member without machining;
wherein the formed annular member comprises a separator plate for a scroll compressor, the formed annular member having a substantially constant thickness.

11. The method of claim 10 , wherein forming the annular member with a central opening having an axially-extending curved inner wall comprises forming the annular member with a central opening with an axially-extending curved inner wall having a cylindrical portion.

12. The method of claim 10 , wherein forming the annular member comprises forming the annular member with a substantially constant thickness between 2.5 mm and 10.0 mm.

13. The method of claim 10 , further comprising a forming operation in which a non-material-removal finishing operation is performed on the axially-extending curved outer wall and the axially-extending curved inner wall.

14. The method of claim 13 , wherein the non-material-removal finishing operation comprises one of burnishing and ironing.

15. The method of claim 10 , wherein the piercing step and the trimming step are performed simultaneously by stamping the metal blank to form the annular member such that an outer diameter and an inner diameter of the annular member are formed simultaneously by the stamping operation.

16. The method of claim 15 , wherein stamping the metal blank to form the annular member such that the outer diameter and the inner diameter of the annular member are formed simultaneously comprises stamping the metal blank on a hard tool configured to restrain movement of the metal blank.

17. The method of claim 10 , wherein the shaping step is performed subsequent to the forming step.

Assignees

• Duppert Ronald J
• Bessel Kurt William Robert
• Bitzer Kuehlmaschinenbau Gmbh

Inventors

• Duppert Ronald J
• Bessel Kurt William Robert

Classifications

• F04C2240/52

  for assemblies with supports on both sides · CPC title

• F04C2230/60

  Assembly methods · CPC title

• F04C23/008

  Hermetic pumps · CPC title

• F04C18/0215 Primary

  where only one member is moving · CPC title

• F04C2240/30

  Casings or housings · CPC title