Scroll compressor with economizer injection

Patent metadata

Field	Value
Publication number	US-11480176-B2
Application number	US-202016912849-A
Country	US
Kind code	B2
Filing date	Jun 26, 2020
Priority date	Jun 28, 2019
Publication date	Oct 25, 2022
Grant date	Oct 25, 2022

Abstract

A scroll compressor includes a compressor housing, an orbiting scroll member, a non-orbiting scroll member, an economizer injection inlet, and a discharge outlet. The orbiting scroll member and the non-orbiting scroll member are disposed within the compressor housing. The orbiting scroll member and the non-orbiting scroll member are intermeshed thereby forming a compression chamber within the compressor housing. The non-orbiting scroll includes a plurality of compression inlet ports. An economizer injection inlet is formed through the compressor housing and in fluid communication with the compression chamber via the compression inlet ports. The discharge outlet is in fluid communication with the compression chamber.

First claim

What is claimed is:

1. A scroll compressor, comprising:
a compressor housing;
an orbiting scroll member disposed within the compressor housing;
a non-orbiting scroll member disposed within the compressor housing, wherein the orbiting scroll member and the non-orbiting scroll member are intermeshed thereby forming a compression chamber within the compressor housing, the non-orbiting scroll including one or more compression inlet ports;
an economizer injection inlet formed through the compressor housing and in fluid communication with the compression chamber via the one or more compression inlet ports;
a discharge outlet in fluid communication with the compression chamber; and
an intermediate pressure chamber formed in the compressor housing between the non-orbiting scroll member and the compressor housing, the intermediate pressure chamber including a first helical channel,
wherein the one or more compression inlet ports include a first compression inlet port, the first helical channel fluidly connecting the economizer injection inlet to the first compression inlet port, and the first helical channel configured to direct a first portion of working fluid from the economizer injection inlet to the first compression inlet port.

2. The compressor of claim 1 , wherein the first helical channel has a continuously curved surface.

3. The compressor of claim 1 , wherein the first helical channel has a circumferential curvature following a circumferential curvature of the compressor housing in a first circumferential direction.

4. The compressor of claim 1 , wherein the first helical channel descends axially from the economizer injection inlet to the first compression inlet port.

5. The compressor of claim 1 , wherein a helical shape of the first helical channel extends for less than a full turn.

6. The compressor of claim 1 , wherein the one or more compression inlet ports include a second compression inlet port, the intermediate pressure chamber includes a second helical channel that connects the economizer injection inlet to the second compression inlet port, the second helical channel configured to direct a second portion of the working fluid from the economizer injection inlet to the second compression inlet port, and the second helical channel having a continuously curved surface.

7. The compressor of claim 6 , wherein a helical shape of the second helical channel has a circumferential curvature following a circumferential curvature of the compressor housing in a second circumferential direction, the second helical shape descends axially from the economizer injection inlet to the second compression inlet port, the second helical channel extends for less than a full turn, and the first helical channel and second helical channel diverge from the economizer injection inlet.

8. A heating, ventilation, air conditioning, and refrigeration (HVACR) system, comprising:
a refrigerant circuit, including:
a compressor, a condenser, an expansion device, an economizer, and an evaporator, fluidly connected, wherein a working fluid flows therethrough, and
wherein the compressor is a scroll compressor, the scroll compressor including:
a compressor housing;
an orbiting scroll member disposed within the compressor housing;
a non-orbiting scroll member disposed within the compressor housing, wherein the orbiting scroll member and the non-orbiting scroll member are intermeshed thereby forming a compression chamber within the compressor housing, the non-orbiting scroll including one or more compression inlet ports;
an economizer injection inlet formed through the compressor housing and in fluid communication with the compression chamber via the one or more compression inlet ports;
a discharge outlet in fluid communication with the compression chamber; and
an intermediate pressure chamber formed in the compressor housing between the non-orbiting scroll member and the compressor housing, the intermediate pressure chamber including a first helical channel,
wherein the one or more compression inlet ports include a first compression inlet port, the first helical channel fluidly connecting the economizer injection inlet to the first compression inlet port, and the first helical channel configured to direct a first portion of the working fluid from the economizer injection inlet to the first compression inlet port.

9. The HVACR system of claim 8 , wherein the first helical channel has a continuously curved surface.

10. The HVACR system of claim 8 , wherein the first helical channel has a circumferential curvature following a circumferential curvature of the compressor housing in a first circumferential direction.

11. The HVACR system of claim 8 , wherein the first helical channel descends axially from the economizer injection inlet to the first compression inlet port.

12. The HVACR system of claim 8 , wherein a helical shape of the first helical channel extends for less than a full turn.

13. The HVACR system of claim 8 , wherein the one or more compression inlet ports include a second compression inlet port, the intermediate pressure chamber includes a second helical channel that connects the economizer injection inlet to the second compression inlet port, the second helical channel configured to direct a second portion of the working fluid entering the economizer injection inlet to the second compression inlet port, and the second helical channel having a continuously curved surface.

14. The HVACR system of claim 13 , wherein a helical shape of the second helical channel has a circumferential curvature following a circumferential curvature of the compressor housing in a second circumferential direction, the second helical shape descends axially from the economizer injection inlet to the second compression inlet port, the second helical channel extends for less than a full turn, and the first helical channel and second helical channel diverge from the economizer injection inlet.

15. A scroll compressor, comprising:
a compressor housing having a plurality of portions including an upper housing portion and a lower housing portion;
an orbiting scroll member disposed within the compressor housing;
a non-orbiting scroll member disposed within the compressor housing, wherein the orbiting scroll member and the non-orbiting scroll member are intermeshed thereby forming a compression chamber within the compressor housing, the non-orbiting scroll including one or more compression inlet ports;
an economizer injection inlet formed through the upper housing portion and in fluid communication with the compression chamber via the one or more compression inlet ports; and
a discharge outlet in fluid communication with the compression chamber, and
wherein the upper housing portion and the non-orbiting scroll member are sealingly engaged, thereby forming an intermediate pressure chamber therebetween, the intermediate pressure chamber including a first helical channel, and
the one or more compression inlet ports include a first compression inlet port, the first helical channel fluidly connecting the economizer injection inlet to the first compression inlet port, and the first helical channel configured to direct a first portion of the working fluid from the economizer injection inlet to the first compression inlet port.

16. The scroll compressor of claim 15 , wherein the first helical channel has a continuously curved surface.

17. The scroll compressor of claim 15 , wherein the first helical channel has a circumferential curvature following a circumferential curvature of the compressor housing in a first circ

Assignees

• Trane Int Inc

Inventors

• Lepak Derrick
• Betthauser Torin Allan

Classifications

• F04C27/005

  Axial sealings for working fluid · CPC title

• F04C2240/30

  Casings or housings · CPC title

• F04C18/0261

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

• F04C23/008

  Hermetic pumps · CPC title

• F04C18/0215 Primary

  where only one member is moving · CPC title