Scroll compressor with engineered shared communication port

Patent metadata

Field	Value
Publication number	US-12140147-B2
Application number	US-202318469249-A
Country	US
Kind code	B2
Filing date	Sep 18, 2023
Priority date	Sep 30, 2021
Publication date	Nov 12, 2024
Grant date	Nov 12, 2024

Abstract

An asymmetric scroll compressor includes a compressor housing. An orbiting scroll member and a non-orbiting scroll member disposed within the compressor housing. The orbiting scroll member and the non-orbiting scroll member each includes a baseplate and a wrap extending from the baseplate. The orbiting scroll member and the non-orbiting scroll member intermeshed to form a plurality of compression pockets. A driveshaft affixed to the orbiting scroll member and configured to orbit the orbiting scroll member from a first orbital position to a second orbital position. A communication port disposed on the baseplate of one of the orbiting scroll member and the non-orbiting scroll such that: in the first orbital position, the communication port communicates with a first enclosed pocket of the plurality of compression pockets, and in the second orbital position, the communication port communicates with a second enclosed pocket of the plurality of compression pockets.

First claim

What is claimed is:

1. An asymmetric scroll compressor comprising:
a compressor housing;
an orbiting scroll member and a non-orbiting scroll member disposed within the compressor housing, the orbiting scroll member and the non-orbiting scroll member each include a baseplate and a wrap extending from the baseplate, the orbiting scroll member and the non-orbiting scroll member intermeshed to form a plurality of compression pockets;

a driveshaft coupled to the orbiting scroll member and configured to orbit the orbiting scroll member from a first orbital position to a second orbital position;
a communication port disposed in a porting envelope, the porting envelope defined by an overlapping area from relative orbital movements of a first enclosed pocket and a second enclosed pocket of the plurality of compression pockets, the communication port including an inner side having a contour matching a contour of an inner side of the porting envelope and an outer side having a contour matching a contour of an outer side of the porting envelope, the inner side and the outer side being opposite sides of the communication port, the inner side of the communication port and the inner side of the porting envelope being closer to the driveshaft than the outer side of the communication port and the outer side of the porting envelope, respectively, such that:
in the first orbital position, the communication port communicates with the first enclosed pocket of the plurality of compression pockets, and
in the second orbital position, the communication port communicates with the second enclosed pocket of the plurality of compression pockets, wherein the orbiting scroll member has an intermediate orbital position between the first orbital position and the second orbital position such that:
in the intermediate orbital position, the communication port communicates with both the first enclosed pocket and the second enclosed pocket, wherein the communication port outlet spans across the wrap of the orbiting scroll member to extend onto both the first enclosed pocket and the second enclosed pocket.

2. The asymmetric scroll compressor of claim 1 , wherein the first enclosed pocket and the second enclosed pocket are adjacent in a radial direction and separated by one of the wraps.

3. The asymmetric scroll compressor of claim 1 , wherein the first enclosed pocket and the second enclosed pocket are at or about a same pressure between the first orbital position and the second orbital position.

4. The asymmetric scroll compressor of claim 1 , further comprises a porous material disposed in the communication port, the communication port configured to transfer fluid through the porous material, and the porous material configured to mitigate wear on a tip seal disposed on one of the wraps.

5. The asymmetric scroll compressor of claim 1 , wherein the communication port is disposed within the baseplate of the non-orbiting scroll member.

6. A method of communicating working fluid at an intermediate pressure with an asymmetric scroll compressor, comprising:
orbiting an orbiting scroll member affixed to a driveshaft from a first orbital position to a second orbital position to intermesh with a non-orbiting scroll member of the asymmetric scroll compressor, forming a plurality of compression pockets, and the orbiting scroll member and the non-orbiting scroll member each include a baseplate and a wrap extending from the baseplate;
receiving the working fluid at a suction pressure from a suction intake disposed between the orbiting scroll member and the non-orbiting scroll member;
enclosing the working fluid in the suction intake to obtain a first enclosed pocket of the plurality of compression pockets;
communicating the working fluid at an intermediate pressure from a communication port including a communication port disposed in a porting envelope, the porting envelope defined by an overlapping area from relative orbital movements of a first enclosed pocket and a second enclosed pocket of the plurality of compression pockets, the communication port including an inner side having a contour matching a contour of an inner side of the porting envelope and an outer side having a contour matching a contour of an outer side of the porting envelope, the inner side and the outer side being opposite sides of the communication port, the inner side of the communication port and the inner side of the porting envelope being closer to the driveshaft than the outer side of the communication port and the outer side of the porting envelope, respectively, such that:
in the first orbital position, communicating with the first enclosed pocket of the plurality of compression pockets via the communication port, and
in the second orbital position, communicating with a second enclosed pocket of the plurality of compression pockets via the communication port; and

discharging the working fluid at a discharge pressure through a discharge, wherein the orbiting scroll member has an intermediate orbital position between the first orbital position and the second orbital position such that:
in the intermediate orbital position, the communication port communicates with both the first enclosed pocket and the second enclosed pocket, wherein the communication port spans across the wrap of the orbiting scroll member to extend onto both the first enclosed pocket and the second enclosed pocket.

7. The method of claim 6 , wherein
the first enclosed pocket and the second enclosed pocket are adjacent in a radial direction and separated by one of the wraps.

8. The method of claim 6 , further comprising:
maintaining the first enclosed pocket and the second enclosed pocket at or about a same pressure at the intermediate orbital position.

9. The method of claim 6 , further comprising:
orbiting the orbiting scroll member from a suction orbital position to the first orbital position to enclose the working fluid in the suction intake.

10. A refrigerant circuit, comprising:
an asymmetric scroll compressor, an expander, a condenser, and an evaporator fluidly connected, wherein the asymmetric scroll compressor includes:
a compressor housing;
an orbiting scroll member and a non-orbiting scroll member disposed within the compressor housing, the orbiting scroll member and the non-orbiting scroll member each include a baseplate and a wrap extending from the baseplate, the orbiting scroll member and the non-orbiting scroll member intermeshed to form a plurality of compression pockets;

a driveshaft affixed to the orbiting scroll member configured to orbit the orbiting scroll member from a first orbital position to a second orbital position;
a communication port including a communication port disposed in a porting envelope, the porting envelope defined by an overlapping area from relative orbital movements of a first enclosed pocket and a second enclosed pocket of the plurality of compression pockets, the communication port including an inner side having a contour matching a contour of an inner side of the porting envelope and an outer side having a contour matching a contour of an outer side of the porting envelope, the inner side and the outer side being opposite sides of the communication port, the inner side of the communication port and the inner side of the porting envelope being closer to the driveshaft than the outer side of the communication port and the outer side of the porting envelope, respectively, such that:
in the first orbital position, the communication port communicates with the first enclosed pocket of the plurality of compression pockets, and
in the second orbital position, the communication port communicates with the second enclosed pocket of the plurality of compression

Assignees

• Trane Int Inc

Inventors

• Ziolkowski Jr Joseph E
• Mlsna Eric S

Classifications

• F04C2240/80

  Other components · CPC title

• F04C23/008

  Hermetic pumps · CPC title

• F04C18/0261

  Details of the ports, e.g. location, number, geometry · CPC title

• F01C1/0253

  Details concerning the base · CPC title

• F04C18/0253

  Details concerning the base · CPC title