Scroll compressor having axial guide support

Patent metadata

Field	Value
Publication number	US-10634141-B2
Application number	US-201715459594-A
Country	US
Kind code	B2
Filing date	Mar 15, 2017
Priority date	Sep 17, 2014
Publication date	Apr 28, 2020
Grant date	Apr 28, 2020

Abstract

To be as lightweight and compact, for example for automotive technology, a scroll compressor further includes an axial guide that supports the movable compressor body to prevent movements in the direction parallel to a centre axis of the stationary compressor body and, in the event of movements, guides it in the direction transverse to the centre axis. A coupling prevents the movable compressor body from rotating freely. The axial guide supports a compressor body base, which carries the scroll vane, of the second compressor body against an axial support face, in that the axial support face abuts a sliding body such that it is slidable transversely to the centre axis. The sliding body is slidable transversely to the centre axis, on a carrier element that is arranged in the compressor housing.

First claim

The invention claimed is:

1. A compressor, including
a compressor housing,
a scroll compressor unit that is arranged in the compressor housing and has a first, stationary compressor body and a second compressor body that is movable in relation to the stationary compressor body, whereof first and second scroll vanes, in the shape of a circle involute, engage in one another to form compressor chambers when the second compressor body is moved in relation to the first compressor body on an orbital path,
an axial guide that supports the second compressor body to prevent movements in a direction parallel to a centre axis of the stationary compressor body and, in an event of movements, guides the second compressor body in a direction transverse to the centre axis, a drive motor that drives an eccentric drive for the scroll compressor unit, wherein the eccentric drive has an entrainer that is driven by the drive motor, that revolves on a path about a central axis of a drive shaft and that cooperates with an entrainer receptacle in the second compressor body,
and a coupling that prevents the second compressor body from rotating freely,
the axial guide supports a compressor body base, which carries the scroll vane, of the second compressor body against an axial support face, in that the axial support face abuts a sliding body such that the axial support face is slidable transversely to the centre axis, the sliding body for its part being supported, such that the sliding body is slidable transversely to the centre axis, on a carrier element that is arranged in the compressor housing; and
wherein the axial support face is supported on an annular face of the sliding body that surrounds the centre axis.

2. The compressor according to claim 1 , wherein the sliding body is movable in two dimensions, in relation to the compressor body base and in relation to the carrier element.

3. The compressor according to claim 1 , wherein the sliding body is movably guided in a two-dimensional guidance with play in relation to at least one of the compressor body base and the carrier element.

4. The compressor according to claim 3 , wherein the axial guide has a first guiding element that is arranged on the sliding body and a second guiding element that is either connected to the compressor body base or to the carrier element.

5. The compressor according to claim 3 , wherein the guidance with play has, as the guiding elements, a guide pin and a guide recess that cooperates with the guide pin, and these are movable in two dimensions in relation to one another.

6. The compressor according to claim 1 , wherein the axial support face takes the form of an annular face surrounding a centre axis of the second compressor body.

7. The compressor according to claim 1 , wherein the axial support face is adjoined, at least one of radially outwardly and radially inwardly, by an edge face of the second compressor body base that is set back in relation to a plane in which the axial support face extends.

8. The compressor according to claim 1 , wherein the sliding body is supported against the carrier element by means of a sliding bearing face.

9. The compressor according to claim 1 , wherein the carrier element has a carrier face against which the sliding body is supported by means of the sliding bearing face.

10. The compressor according to claim 1 , wherein the sliding body takes a plate-like form, as an annular disc.

11. The compressor according to claim 1 , wherein the first, stationary compressor body is made from cast steel.

12. The compressor according to claim 1 , wherein the second compressor body is made from aluminium alloy.

13. The compressor according to claim 1 , wherein the sliding body is made from spring steel.

14. The compressor according to claim 1 , wherein the carrier element is made from sintered material.

15. The compressor according to claim 4 , wherein the carrier element has a carrier face formed by an open-pored sintered material, on which the sliding body is supported by means of its sliding bearing face.

16. The compressor according to claim 14 , wherein the entrainer receptacle is integrated in the compressor body base.

17. The compressor according to claim 16 , wherein the entrainer receptacle is arranged on the compressor body base such that the entrainer receptacle does not project beyond the axial support face in the direction parallel to the centre axis.

18. The compressor according to claim 1 , wherein the centre axis of the stationary compressor body extends in a level position.

19. The compressor according to claim 1 , wherein a drive shaft of the drive motor extends in a level position.

20. The compressor according to claim 1 , wherein the compressor housing is made from an aluminium alloy.

21. A compressor, including
a compressor housing, a scroll compressor unit that is arranged in the compressor housing and has a first, stationary compressor body and a second compressor body that is movable in relation to the stationary compressor body, whereof first and second scroll vanes, in the shape of a circle involute, engage in one another to form compressor chambers when the second compressor body is moved in relation to the first compressor body on an orbital path, an axial guide that supports the second compressor body to prevent movements in a direction parallel to a centre axis of the stationary compressor body and, in an event of movements, guides the second compressor body in a direction transverse to the centre axis, a drive motor that drives an eccentric drive for the scroll compressor unit, wherein the eccentric drive has an entrainer that is driven by the drive motor, that revolves on a path about a central axis of a drive shaft and that cooperates with an entrainer receptacle in the second compressor body, and a coupling that prevents the second compressor body from rotating freely, the axial guide supports the second compressor body against an axial support face that is formed by the latter such that second compressor body is slidable transversely in relation to the centre axis, and the axial support face is formed by a compressor body base of the second compressor body that carries the scroll vane; and wherein the axial support face abuts a sliding body such that the axial support face is slidable transversely to the centre axis, and
wherein the axial support face is supported on an annular face of the sliding body that surrounds the centre axis.

22. The compressor according to claim 21 , wherein the centre axis of the stationary compressor body extends in a level position.

23. The compressor according to claim 21 , wherein a drive shaft of the drive motor extends in a level position.

24. The compressor according to claim 21 , wherein the compressor housing is made from an aluminium alloy.

Assignees

• Bitzer Kuehlmaschinenbau Gmbh

Inventors

• Gossen Dimitri
• Ceylan Muzaffer

Classifications

• F04C2240/801

  Wear plates · CPC title

• F04C29/0021

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

• F04C23/008

  Hermetic pumps · CPC title

• F04C2240/50

  Bearings · CPC title

• F04C29/0057 Primary

  for eccentric movement · CPC title