Scroll compressor with bypass portions

Patent metadata

Field	Value
Publication number	US-11047386-B2
Application number	US-201816186221-A
Country	US
Kind code	B2
Filing date	Nov 9, 2018
Priority date	May 21, 2013
Publication date	Jun 29, 2021
Grant date	Jun 29, 2021

Abstract

A scroll compressor includes a discharge port at a central portion, and a pair of scrolls that define two compression chambers continuously moving toward the discharge port, and a plurality of bypass portions defined at with an each interval along a compression path of each compression chamber. Compression gradients of the both compression chambers are different from each other. An interval between a bypass portion closest to the discharge port and another bypass portion is defined as a first interval. The first interval of a the bypass portion belonging to a compression chamber having a relatively larger compression gradient is smaller than that of the bypass portion belonging to the other compression chamber.

First claim

What is claimed is:

1. A scroll compressor comprising:
a first scroll that defines a first discharge port and a second discharge port; and
a second scroll disposed in the first scroll and configured to orbit relative to the first scroll, wherein the first scroll and the second scroll are configured to define a first compression chamber and a second compression chamber between the first scroll and the second scroll based on the second scroll orbiting relative to the first scroll,
wherein the second scroll is configured to orbit relative to the first scroll to thereby move the first compression chamber and the second compression chamber toward the first discharge port and the second discharge port, respectively, the movement of the first compression chamber defining a compression path of the first compression chamber, and the movement of the second compression chamber defining a compression path of the second compression chamber, and
wherein the scroll compressor further comprises:
a plurality of first bypass portions disposed along the compression path of the first compression chamber, and
a plurality of second bypass portions disposed along the compression path of the second compression chamber.

2. The scroll compressor of claim 1 , wherein the first discharge port and the second discharge port are spaced apart from each other and are each arranged to be eccentric from a radial center of the scroll compressor.

3. The scroll compressor of claim 1 , wherein the first discharge port has an elongated shape that is different from a shape of the second discharge port.

4. The scroll compressor of claim 1 , wherein the first discharge port is configured to communicate with the first compression chamber based on the first compression chamber having moved to the first discharge port, and
wherein the second discharge port is configured to communicate with the second compression chamber based on the second compression chamber having moved to the second discharge port.

5. The scroll compressor of claim 1 , wherein the plurality of first bypass portions are arranged along the compression path of the first compression chamber, and the first discharge port is arranged closer to a radial center of the scroll compressor than the plurality of first bypass portions, and
wherein the plurality of second bypass portions are arranged along the compression path of the second compression chamber, and the second discharge port is arranged closer to the radial center of the scroll compressor than the plurality of second bypass portions.

6. The scroll compressor of claim 1 , wherein an overall cross-sectional area of the plurality of second bypass portions is greater than or equal to an overall cross-sectional area of the plurality of first bypass portions.

7. The scroll compressor of claim 6 , wherein at least one of the plurality of first bypass portions comprises a plurality of first bypass holes,
wherein at least one of the plurality of second bypass portions comprises a plurality of second bypass holes, and
wherein a number of bypass holes in the plurality of second bypass holes is greater than or equal to a number of bypass holes in the plurality of first bypass holes.

8. The scroll compressor of claim 7 , wherein a cross-sectional area of each of the plurality of first bypass holes is equal to a cross-sectional area of each of the plurality of second bypass holes.

9. The scroll compressor of claim 1 , wherein at least one of the plurality of first bypass portions comprises a plurality of first bypass holes,
wherein at least one of the plurality of second bypass portions comprises a plurality of second bypass holes,
wherein a cross-sectional area of the first discharge port is greater than a cross-sectional area of each of the plurality of first bypass holes, and
wherein a cross-sectional area of the second discharge port is greater than a cross-sectional area of each of the plurality of second bypass holes.

10. A scroll compressor, comprising:
a first scroll comprising a first wrap that is disposed on a first plate portion, wherein (i) a first discharge port and a second discharge port are defined through the first plate portion, (ii) a plurality of first bypass portions are defined through the first plate portion and are disposed along an inner radial surface of the first wrap, and (iii) a plurality of second bypass portions are defined through the first plate portion and are disposed along an outer radial surface of the first wrap; and
a second scroll comprising a second wrap that is disposed on a second plate portion, the second scroll configured to perform an orbiting movement relative to the first scroll to form (i) a first compression chamber between the inner radial surface of the first wrap and an outer radial surface of the second wrap, and (ii) a second compression chamber between the outer radial surface of the first wrap and an inner radial surface of the second wrap,
wherein the second scroll is configured to orbit relative to the first scroll to thereby move the first compression chamber and the second compression chamber toward the first discharge port and the second discharge port, respectively, the movement of the first compression chamber defining a compression path of the first compression chamber, and the movement of the second compression chamber defining a compression path of the second compression chamber.

11. The scroll compressor of claim 10 , wherein the first discharge port and the second discharge port are spaced apart from each other and are each arranged to be eccentric from a radial center of the scroll compressor.

12. The scroll compressor of claim 10 , wherein a shape of the first discharge port is elongated along a direction of the inner radial surface of the first wrap, and is different from a shape of the second discharge port.

13. The scroll compressor of claim 10 , wherein the first discharge port is configured to communicate with the first compression chamber based on the first compression chamber having moved to the first discharge port, and
wherein the second discharge port is configured to communicate with the second compression chamber based on the second compression chamber having moved to the second discharge port.

14. The scroll compressor of claim 10 , wherein the plurality of first bypass portions are sequentially arranged along the inner radial surface of the first wrap, and the first discharge port is arranged along the inner radial surface of the first wrap closer to a radial center of the scroll compressor than the plurality of first bypass portions, and
wherein the plurality of second bypass portions are arranged sequentially along the outer radial surface of the first wrap, and the second discharge port is arranged along the outer radial surface of the first wrap closer to the radial center of the scroll compressor than the plurality of second bypass portions.

15. The scroll compressor of claim 10 , wherein an overall cross-sectional area of the plurality of second bypass portions is greater than or equal to an overall cross-sectional area of the plurality of first bypass portions.

16. The scroll compressor of claim 15 , wherein at least one of the plurality of first bypass portions comprises a plurality of first bypass holes that penetrate through the first plate portion,
wherein at least one of the plurality of second bypass portions comprises a plurality of second bypass holes that penetrate through the first plate portion, and
wherein a number of bypass holes in the plurality of second bypass holes is greater than or equal to a number of bypass

Assignees

• Lg Electronics Inc

Inventors

• Choi Yongkyu
• Won Inho
• Kim Cheolhwan

Classifications

• F04C2210/26

  Refrigerants with particular properties, e.g. HFC-134a · CPC title

• F04C2240/40

  Electric motor · CPC title

• F04C28/26

  using bypass channels · CPC title

• F04C29/023

  Lubricant distribution through a hollow driving shaft (F04C29/025 takes precedence) · CPC title

• F04C15/06

  Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet · CPC title