Reciprocating compressor

Patent metadata

Field	Value
Publication number	US-12196198-B2
Application number	US-202117471773-A
Country	US
Kind code	B2
Filing date	Sep 10, 2021
Priority date	Jan 22, 2021
Publication date	Jan 14, 2025
Grant date	Jan 14, 2025

Abstract

A reciprocating compressor includes a suction muffler including a partition wall that partitions an inner space of the suction muffler into multiple spaces. The suction muffler further includes a guide pipe that is provided at the partition wall and that defines a resonance hole configured to reduce noise in a specific band.

First claim

What is claimed is:

1. A reciprocating compressor comprising:
a cylinder; and
a suction muffler configured to receive refrigerant and to supply the refrigerant to the cylinder, the suction muffler comprising:
a suction muffler body that defines a suction space configured to receive the refrigerant, the suction muffler body further defining a suction hole,
a suction pipe portion that is disposed inside the suction muffler body and extends from the suction hole,
a partition wall that is disposed at the suction muffler body and partitions the suction space into a first space and a second space, and
a guide pipe that is disposed at the partition wall and defines a refrigerant passage in fluid communication with the first and second spaces, the guide pipe being separably coupled to the suction pipe portion, wherein the guide pipe comprises:
a first pipe portion that extends from the partition wall to the first space and has a circumferential surface defining a resonance hole, the first pipe portion having a first end that is in fluid communication with the suction pipe portion and configured to introduce the refrigerant suctioned through the suction hole, and
a second pipe portion that extends from the partition wall to the second space, the second pipe portion having a second end that is configured to discharge the refrigerant from the guide pipe to the second space, and

wherein the suction pipe portion is in contact with the first end of the first pipe portion to thereby support the first pipe portion.

2. The reciprocating compressor according to claim 1 , wherein the suction pipe portion extends from the suction hole to a central portion of the suction muffler body.

3. The reciprocating compressor according to claim 1 , wherein the suction pipe portion comprises:
a pipe discharge portion configured to discharge the refrigerant in the suction pipe portion to the guide pipe; and
a support stepwise portion that protrudes inward from an inner circumferential surface of the pipe discharge portion and supports the first end of the first pipe portion.

4. The reciprocating compressor according to claim 1 , wherein the guide pipe extends from the first space to the second space in a direction crossing the partition wall.

5. The reciprocating compressor according to claim 1 , wherein the guide pipe extends from the first space to the second space through the partition wall.

6. The reciprocating compressor according to claim 1 , wherein a length of the second pipe portion is greater than a length of the first pipe portion.

7. The reciprocating compressor according to claim 1 , wherein the partition wall comprises:
a partition wall plate connected to the guide pipe; and
a protrusion that protrudes from the partition wall plate and is in contact with an inner surface of the suction muffler body, and
wherein the suction muffler body comprises a support jaw that supports the partition wall plate.

8. The reciprocating compressor according to claim 7 , wherein the suction muffler body comprises a first suction muffler body and a second suction muffler body, and
wherein the partition wall plate is disposed within the second suction muffler body.

9. The reciprocating compressor according to claim 8 , wherein an inner surface of the second suction muffler body supports the protrusion of the partition wall, and
wherein an end of the first suction muffler body is configured to apply pressure to the protrusion of the partition wall.

10. The reciprocating compressor according to claim 9 , wherein the first suction muffler body comprises a flange and an inner wall that are spaced apart from each other to thereby define an insertion space therebetween, the insertion space receiving an end of the second suction muffler body.

11. The reciprocating compressor according to claim 10 , wherein the inner wall of the first suction muffler body is configured to apply pressure to the protrusion of the partition wall.

12. The reciprocating compressor according to claim 1 , wherein the first space comprises a resonance chamber, and the second space comprises a cavity chamber, and
wherein the resonance chamber and the cavity chamber are configured to reduce noise generated in the reciprocating compressor.

13. The reciprocating compressor according to claim 1 , further comprising:
a tank disposed between the cylinder and the suction muffler and configured to receive the refrigerant from the suction muffler and to discharge the refrigerant to the cylinder; and
a discharge muffler disposed at a side of the tank and configured to receive the refrigerant compressed in the cylinder and to discharge the refrigerant to an outside of the discharge muffler.

14. The reciprocating compressor according to claim 13 , wherein the tank is disposed between the suction muffler and the discharge muffler and connects the suction muffler and the discharge muffler to each other.

15. The reciprocating compressor according to claim 13 , wherein the refrigerant passage extends from the first end of the first pipe portion facing away from the tank to the second end of the second pipe portion facing the tank, and
wherein a distance between the partition wall and the first end of the first pipe portion is less than a distance between the partition wall and the second end of the second pipe portion.

16. The reciprocating compressor according to claim 1 , wherein the partition wall is disposed inside the suction muffler body.

17. The reciprocating compressor according to claim 1 , wherein the refrigerant passage extends from the first end of the first pipe portion to the second end of the second pipe portion, and
wherein each of the resonance hole and the first end of the first pipe portion is configured to supply the refrigerant in the first space to the second space through the refrigerant passage.

18. The reciprocating compressor according to claim 1 , wherein the resonance hole passes through the circumferential surface of the first pipe portion and is in fluid communication with the refrigerant passage inside the first pipe portion.

19. A reciprocating compressor comprising:
a cylinder; and
a suction muffler configured to receive refrigerant and to supply the refrigerant to the cylinder, the suction muffler comprising:
a suction muffler body that defines a suction space configured to receive the refrigerant, the suction muffler body further defining a suction hole,
a suction pipe portion that is disposed inside the suction muffler body and extends from the suction hole,
a partition wall that is disposed at the suction muffler body and partitions the suction space into a first space and a second space, and
a guide pipe that is disposed at the partition wall and defines a refrigerant passage in fluid communication with the first and second spaces, wherein the guide pipe comprises:
a first pipe portion that extends from the partition wall to the first space and has a circumferential surface defining a resonance hole, the first pipe portion having a first end configured to introduce the refrigerant suctioned through the suction hole, and
a second pipe portion that extends from the partition wall to the second space, the second pipe portion having a second end configured to discharge the refrigerant from the guide pipe to the second space, and

wherein the suction pipe portion comprises:
a pipe discharge portion configured to discharge the refrigerant in the suction pipe portion to the guide pipe, and
a support stepwise portion that protrudes inward from an inner

Assignees

• Lg Electronics Inc

Inventors

• Cho Jaeho
• Kim Sukang

Classifications

• F04B39/0066

  using sidebranch resonators, e.g. Helmholtz resonators · CPC title

• F04B53/16

  Casings; Cylinders; Cylinder liners or heads; Fluid connections · CPC title

• F05B2210/14

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

• F05B2260/96

  Preventing, counteracting or reducing vibration or noise · CPC title

• F04B41/00

  Pumping installations or systems specially adapted for elastic fluids (free-piston pumps specially adapted for elastic fluids or systems incorporating such pumps F04B31/00; piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for F04B35/00) · CPC title