Reciprocating compressor

Patent metadata

Field	Value
Publication number	US-11859604-B2
Application number	US-202117384454-A
Country	US
Kind code	B2
Filing date	Jul 23, 2021
Priority date	Jan 22, 2021
Publication date	Jan 2, 2024
Grant date	Jan 2, 2024

Abstract

A reciprocating compressor includes a cylinder that defines a compressing space and a discharge muffler configured to receive refrigerant compressed in the cylinder and to discharge the refrigerant. The discharge muffler includes a discharge muffler body and a discharge guide supported by the discharge muffler body. The discharge muffler body defines a discharge space configured to receive the refrigerant from the cylinder and includes a wall protruding from an inner circumferential surface of the discharge muffler body. The discharge guide is coupled to the wall and includes a pipe that defines a pipe inflow hole configured to receive the refrigerant from the discharge space and a pipe outflow hole configured to discharge the refrigerant. The discharge guide further includes a fixing bracket that couples the pipe to the discharge muffler body.

First claim

What is claimed is:

1. A reciprocating compressor comprising:
a cylinder that defines a compressing space; and
a discharge muffler configured to receive refrigerant compressed in the cylinder and to discharge the refrigerant, the discharge muffler comprising:
a discharge muffler body that defines a discharge space configured to receive the refrigerant from the cylinder, the discharge muffler body comprising a wall that protrudes from an inner circumferential surface of the discharge muffler body, and
a discharge guide supported by the discharge muffler body and coupled to the wall,

wherein the discharge guide comprises:
a pipe that defines (i) a pipe inflow hole configured to receive the refrigerant from the discharge space and (ii) a pipe outflow hole configured to discharge the refrigerant, and
a fixing bracket that couples the pipe to the discharge muffler body.

2. The reciprocating compressor of claim 1 , wherein the pipe comprises:
a first pipe part that extends in a first direction; and
a second pipe part that extends from the first pipe part in a second direction that is different from the first direction.

3. The reciprocating compressor of claim 2 , wherein the discharge muffler body defines a discharge guide hole configured to introduce the refrigerant from the cylinder into the discharge muffler, and
wherein the pipe inflow hole is defined at the first pipe part and faces the discharge guide hole.

4. The reciprocating compressor of claim 3 , wherein the discharge muffler body further defines a discharge part configured to discharge the refrigerant from the discharge muffler, and
wherein the pipe outflow hole is defined at the second pipe part and faces the discharge part.

5. The reciprocating compressor of claim 4 , wherein the first direction is a vertical direction, and the second direction is a horizontal direction, and
wherein the discharge guide hole is spaced apart from the discharge part and defined above the discharge part in the vertical direction.

6. The reciprocating compressor of claim 1 , wherein the fixing bracket comprises a bracket body that defines an insertion groove coupled to the wall, the bracket body having at least one stepwise section supported by the discharge muffler body.

7. The reciprocating compressor of claim 6 , wherein the at least one stepwise section comprises:
a first stepwise section recessed from an outer surface of the bracket body, the first stepwise section defining a first step width that is less than an outer width of the bracket body; and
a second stepwise section recessed relative to the first stepwise section, the second stepwise section defining a second step width that is less than the first step width.

8. The reciprocating compressor of claim 7 , wherein the discharge muffler body comprises:
an inner wall that is spaced apart from an outer surface of the discharge muffler body, the inner wall including a first jaw that supports the first stepwise section; and
a wall protrusion part that is stepped inward relative to the inner wall, the wall protrusion part including a second jaw that supports the second stepwise section.

9. The reciprocating compressor of claim 1 , further comprising:
a tank that is disposed at one side of the cylinder and defines a discharge chamber configured to receive the refrigerant from the cylinder and to supply the refrigerant to the discharge space,
wherein the discharge chamber has a primary discharge room configured to carry the refrigerant received from the cylinder.

10. The reciprocating compressor of claim 9 , wherein the wall divides the discharge space into one or more discharge rooms that are configured to receive the refrigerant from the primary discharge room.

11. The reciprocating compressor of claim 1 , wherein the wall comprises a first wall and a second wall that are spaced apart from each other, and
wherein the first wall and the second wall divide the discharge space into a plurality of discharge rooms that are configured to carry the refrigerant received from the cylinder.

12. The reciprocating compressor of claim 11 , wherein the plurality of discharge rooms comprise:
a secondary discharge room defined between the first wall and the discharge muffler body.

13. The reciprocating compressor of claim 12 , wherein the plurality of discharge rooms further comprise:
a tertiary discharge room defined between the second wall and the discharge muffler body; and
a quaternary discharge room defined between the first wall and the second wall, the quaternary discharge room being in fluid communication with the tertiary discharge room.

14. The reciprocating compressor of claim 13 , wherein the first wall separates the secondary discharge room from the quaternary discharge room.

15. The reciprocating compressor of claim 1 , wherein the discharge muffler body comprises:
a first muffler body that defines a discharge guide hole configured to introduce the refrigerant from the cylinder into the discharge muffler; and
a second muffler body that is coupled to the first muffler body and defines a discharge part configured to discharge the refrigerant from the discharge muffler, the second muffler body having a bottom surface that supports the discharge guide.

16. The reciprocating compressor of claim 1 , further comprising:
a tank disposed between the cylinder and the discharge muffler, the tank defining a discharge chamber configured to receive the refrigerant from the cylinder and to discharge the refrigerant to the discharge space; and
a suction muffler disposed at one side of the tank and configured to supply the refrigerant to the tank.

17. The reciprocating compressor of claim 16 , wherein the tank is disposed between the suction muffler and the discharge muffler, the tank facing the cylinder and connecting the suction muffler to the discharge muffler.

18. The reciprocating compressor of claim 16 , wherein the tank further defines a suction chamber configured to receive the refrigerant from the suction muffler and to supply the refrigerant to the cylinder.

19. The reciprocating compressor of claim 18 , further comprising:
a shell that defines an enclosed space that accommodates the cylinder, the discharge muffler, the suction muffler, the tank, and the refrigerant,
wherein the suction muffler defines a suction hole configured to introduce the refrigerant in the enclosed space into the suction muffler.

20. The reciprocating compressor of claim 19 , wherein the suction muffler further defines a suction guide hole configured to supply the refrigerant in the suction muffler to the cylinder.

Assignees

• Lg Electronics Inc

Inventors

• Cho Jaeho
• Kim Sukang

Classifications

• F04B39/0072 Primary

  characterised by assembly or mounting · CPC title

• F04B39/0061 Primary

  using muffler volumes · CPC title

• F04B39/121

  Casings · CPC title

• F04B39/122

  Cylinder block · CPC title

• F04B39/123

  Fluid connections · CPC title