Accumulator

Patent metadata

Field	Value
Publication number	US-10502469-B2
Application number	US-201715709211-A
Country	US
Kind code	B2
Filing date	Sep 19, 2017
Priority date	Apr 21, 2017
Publication date	Dec 10, 2019
Grant date	Dec 10, 2019

Abstract

An accumulator having a case which forms a space in which liquid refrigerant and gaseous refrigerant are accommodated, a suction pipe connected to a first side of the case, a connection pipe that connects a second side of the case to a suction side of the compressor, and a gas-liquid separation pipe disposed inside the case to guide the gaseous refrigerant to the connection pipe, and in which the gas-liquid separation pipe is disposed inside the case and is separated from the connection pipe.

First claim

What is claimed is:

1. An accumulator that is connectable to a compressor, comprising:
a case to hold a liquid refrigerant and a gaseous refrigerant;
a suction pipe provided at a first side of the case;
a connection pipe for connecting a second side of the case to a suction side of the compressor; and
a gas-liquid separation pipe provided inside the case to guide the gaseous refrigerant to the connection pipe, and
wherein the gas-liquid separation pipe is separate from the connection pipe, and
wherein a discharge end of the gas-liquid separation pipe is spaced apart from the suction end of the connection pipe by a predetermined distance in an upward direction.

2. The accumulator of claim 1 , wherein the gas-liquid separation pipe extends a predetermined length in the longitudinal direction of the case.

3. The accumulator of claim 2 , wherein a central axis of the gas-liquid separation pipe and a central axis of the case overlap with each other.

4. The accumulator of claim 3 , wherein a central axis of the suction pipe and a central axis of the gas-liquid separation pipe overlap with each other.

5. The accumulator of claim 1 , further comprising:
a liquid refrigerant inflow preventing plate that is provided inside the case to support the discharge end of the gas-liquid separation pipe.

6. The accumulator of claim 5 , wherein the liquid refrigerant inflow preventing plate is horizontally disposed inside the case, and
wherein the gas-liquid separation pipe extends upwardly from the liquid refrigerant inflow preventing plate.

7. The accumulator of claim 6 , wherein an oil recovery hole is formed at a side of the liquid refrigerant inflow preventing plate.

8. The accumulator of claim 6 , wherein the liquid refrigerant inflow preventing plate is spaced apart from a lower end portion of the case by a predetermined distance in an upward direction.

9. The accumulator of claim 5 , wherein the liquid refrigerant inflow preventing plate separates an inner cavity of the case into a first cavity and a second cavity, the first cavity being located above the second cavity.

10. The accumulator of claim 9 , wherein the liquid refrigerant inflow preventing plate comprises a plate having a through hole through which the gas-liquid separation pipe passes.

11. The accumulator of claim 10 , wherein the plate comprises an oil recovery hole through which oil in the first cavity may be received into the second cavity.

12. The accumulator of claim 10 , wherein the liquid refrigerant inflow preventing plate further comprises an inner extension portion that extends upwardly from an outer edge of the through hole and surrounds a portion of the gas-liquid separation pipe.

13. The accumulator of claim 10 , wherein the liquid refrigerant inflow preventing plate further comprises an outer extension portion that extends upwardly from an outer edge of the plate, and
wherein an outer circumferential surface of the outer extension portion is attached to an inner circumferential surface of the case.

14. The accumulator of claim 5 , wherein the case comprises:
a cylindrical body;
an upper cap that covers an upper end portion of the body; and
a lower cap that covers a lower end portion of the body, and
wherein the liquid refrigerant inflow preventing plate is attached to an inner circumferential surface of the body or an inner circumferential surface of the lower cap, the liquid refrigerant inflow preventing plate disposed to separate an inner cavity of the body and an inner cavity of the lower cap.

15. The accumulator of claim 14 , wherein the connection pipe extends horizontally and extends inside the case through a side surface of the lower cap.

16. The accumulator of claim 14 , wherein the connection pipe comprises:
a horizontal portion that extends horizontally; and
a bent portion that is bent at an end portion of the horizontal portion, and
wherein the connection pipe extends inside the case through a side surface of the lower cap or through a bottom surface of the lower cap.

17. The accumulator of claim 16 ,
wherein the suction end of the connection pipe that extends inside the lower cap is bent in an upward direction.

18. The accumulator of claim 1 , further comprising:
a screen member disposed between the suction pipe and the gas-liquid separation pipe to separate the liquid refrigerant from the gaseous refrigerant.

19. The accumulator of claim 5 , further comprising:
a vibration preventing plate disposed above the liquid refrigerant inflow preventing plate, wherein the vibration preventing plate supports the gas-liquid separation pipe.

20. An accumulator that is connectable to a compressor, comprising:
a case to hold a liquid refrigerant and a gaseous refrigerant;
a suction pipe provided at a first side of the case;
a connection pipe for connecting a second side of the case to a suction side of the compressor;
a gas-liquid separation pipe provided inside the case to guide the gaseous refrigerant to the connection pipe; and
a liquid refrigerant inflow preventing plate provided inside the case to support the discharge end of the gas-liquid separation pipe,
wherein the gas-liquid separation pipe is separate from the connection pipe, and
wherein an oil recovery hole is formed at a side of the liquid refrigerant inflow preventing plate.

Assignees

• Lg Electronics Inc

Inventors

• KU Sejin
• Park Hyungjin
• Byun Sangmyung
• Jin Gyeongsu

Classifications

• F25B2500/12

  Sound · CPC title

• F25B2500/13

  Vibrations · CPC title

• F25B43/006 Primary

  Accumulators · CPC title

• F25B43/043

  for compression type systems · CPC title

• F25B41/40

  Fluid line arrangements · CPC title