Scroll compressor and process for compressing a gaseous fluid with the scroll compressor

Patent metadata

Field	Value
Publication number	US-11905951-B2
Application number	US-202017431676-A
Country	US
Kind code	B2
Filing date	Apr 6, 2020
Priority date	May 29, 2019
Publication date	Feb 20, 2024
Grant date	Feb 20, 2024

Abstract

A scroll compressor for compressing a gaseous fluid, in particular a refrigerant. The scroll compressor exhibits a non-moving stator with at least one outlet and a moving orbiter, each with a base plate and a spiral-shaped wall that extends from the base plate. The base plates are arranged relative to one another in such a way that the walls interlock with one another and closed working chambers are created. The volumes and the positions of the working chambers are changed in reaction to a rotary movement of the orbiter here.

First claim

The invention claimed is:

1. A scroll compressor for compressing a gaseous fluid comprising:
a non-moving stator with a base plate and a spiral-shaped wall that extends from the base plate;
at least one outlet; and
a moving orbiter with a base plate and a spiral-shaped wall that extends from the base plate, wherein the base plate of the stator and the base plate of the orbiter are arranged relative to one another in such a way that the wall of the stator and the wall of the orbiter interlock with one another and create closed working chambers, wherein volumes and positions of the working chambers are changed in reaction to a rotary movement of the orbiter, wherein the wall of the stator and the wall of the orbiter are configured in such a way that a first end chamber of the working chambers and a second end chamber of the working chambers of a compression path, as well as an intermediate chamber arranged between the first end chamber and the second end chamber at inner ends of the wall of the stator and the wall of the orbiter are formed in an area of the at least one outlet based on a rotation angle of the orbiter, and wherein at least one of the wall of the stator and the wall of the orbiter in an area of the inner ends is configured in such a way that a gap is created between the wall of the stator and the wall of the orbiter as a flow path from the intermediate chamber to at least one of the first end chamber and the second end chamber or as a flow path from the first end chamber to the second end chamber based on the rotation angle of the orbiter, wherein a degree of opening of the flow path is dependent on the rotation angle of the orbiter, wherein as the rotation angle of the orbiter increases, the degree of opening of the flow path from the intermediate chamber to the at least one of the first end chamber and the second end chamber increases from 0 to a maximum, and the degree of opening of the flow path from the first end chamber to the second end chamber gradually increases from when the degree of opening of the flow path from the intermediate chamber to the at least one of the first end chamber and the second end chamber is the maximum.

2. The scroll compressor according to claim 1 , wherein the wall of the stator with the inner end on the wall of the orbiter and the wall of the orbiter with the inner end on the wall of the stator are arranged next to one another and create the sealed intermediate chamber based on the rotation angle of the orbiter.

3. The scroll compressor according to claim 1 , wherein the gap is created, based on the rotation angle of the orbiter, between the wall of the stator and the wall of the orbiter as a flow path from the intermediate chamber to the first end chamber and/or the gap is created as a flow path from the intermediate chamber to the second end chamber, wherein the degree of opening of each of the flow paths is dependent on the rotation angle of the orbiter.

4. The scroll compressor according to claim 1 , wherein the at least one of the wall of the stator and the wall of the orbiter is constructed with a wall thickness reduced in the area of the inner ends between two sections in order to increase an original volume of the intermediate chamber.

5. The scroll compressor according to claim 4 , wherein the at least one of the wall of the stator and the wall of the orbiter is constructed in such a way that the wall thickness of the at least one of the wall of the stator and the wall of the orbiter decreases continuously from a first one of the two sections moving towards a second one of the two sections and is then increased in an area of the second one of the two sections to an original thickness at the second one of the two sections.

6. The scroll compressor according to claim 1 , wherein the at least one of the wall of the stator and the wall of the orbiter exhibits a constant wall thickness across a height of the at least one of the wall of the stator and the wall of the orbiter.

7. The scroll compressor according to claim 1 , wherein the wall of the orbiter is constructed in such a way in the area of the inner end that a gap is created between the wall of the stator and the wall of the orbiter as a flow path from the intermediate chamber to the at least one of the first end chamber and the second end chamber.

8. The scroll compressor according to claim 1 , wherein the wall of the stator is constructed in such a way in the area of the inner end that a gap is created between the wall of the stator and the wall of the orbiter as a flow path from the intermediate chamber to the at least one of the first end chamber and the second end chamber.

9. A process for compressing the gaseous fluid using the scroll compressor according to claim 1 , wherein in a certain range of the rotation angle of the orbiter with an arrangement of the stator and the orbiter a gap is opened between the wall of the stator and the wall of the orbiter as a flow path from the intermediate chamber to the at least one of the first end chamber and the second end chamber, whose degree of opening is dependent on the rotation angle of the orbiter, wherein the intermediate chamber is closed at a rotation angle of 0° with the arrangement of the stator and orbiter.

10. The process according to claim 9 , wherein the flow path from the intermediate chamber to the at least one of the first end chamber and the second end chamber is opened in the rotation angle range of greater than 0° up to 60°.

11. The process according to claim 9 , wherein an open gap is created between the intermediate chamber and one of the first end chamber and the second end chamber with an arrangement of the stator and the orbiter at the rotation angle of the orbiter in a range around 20°, wherein the flow path between the intermediate chamber and the one of the first end chamber and the second end chamber exhibits a degree of opening of around 20%.

12. The process according to claim 9 , wherein an open gap is created between the intermediate chamber and the first end chamber, as well as between the intermediate chamber and the second end chamber, with an arrangement of the stator and the orbiter at the rotation angle of the orbiter in a range around 30°.

13. The process according to claim 12 , wherein a flow path between the intermediate chamber and one of the first end chamber and the second end chamber exhibits a degree of opening of around 40%.

14. The process according to claim 9 , wherein a gap is created between the intermediate chamber and the first end chamber, as well as between the intermediate chamber and the second end chamber with an arrangement of the stator and the orbiter at the rotation angle of the orbiter in a range around 60° in such a way that compressed fluid flows between the first end chamber and the second end chamber.

15. The process according to claim 9 , wherein a flow path between the first end chamber and the second end chamber is continuously opened at the rotation angle within a range greater than 30° and fully open at the rotation angle of around 115° with an arrangement of the stator and the orbiter.

16. A scroll compressor for compressing a gaseous fluid comprising:
a non-moving stator with a base plate and a spiral-shaped wall that extends from the base plate;
at least one outlet; and
a moving orbiter with a base plate and a spiral-shaped wall that extends from the base plate, wherein the base plate of the stator and the base plate of the orbiter are arranged relative to one another in such a way that the wall of the stator and the wall of the orbiter interlock with one another and create closed working

Assignees

• Hanon Systems

Inventors

• Gutberlet Dirk
• Dursun Kadir
• Friedl Michael

Classifications

• F04C18/0215 Primary

  where only one member is moving · CPC title

• F04C2240/10

  Stators · CPC title

• F04C18/0269

  Details concerning the involute wraps · CPC title

• F04C18/0246

  Details concerning the involute wraps or their base, e.g. geometry · CPC title

• F04C2240/20

  Rotors · CPC title