Reciprocating compressor

Patent metadata

Field	Value
Publication number	US-10267301-B2
Application number	US-201514936487-A
Country	US
Kind code	B2
Filing date	Nov 9, 2015
Priority date	Nov 10, 2014
Publication date	Apr 23, 2019
Grant date	Apr 23, 2019

Abstract

A reciprocating compressor including a shell, a suction pipe, a driver located at the inner portion of the shell to generate a rotary force, a compressor located in the shell and a muffler assembly is provided. The compressor includes a connecting rod configured to convert the rotary force to a linear driving force, a piston connected to the connecting rod and a cylinder into which the piston is movably inserted is provided. The muffler assembly is configured to transfer a refrigerant suctioned through the suction pipe to the cylinder and includes a suction muffler having an inner portion and a suction hole through which a refrigerant is suctioned, an inner pipe installed at the inner portion of the suction muffler, the inner pipe having a bent portion, the inner pipe providing communication between the suction hole and the cylinder and a coupler disposed at the bent portion.

First claim

What is claimed is:

1. A reciprocating compressor comprising:
a shell having an inner portion;
a suction pipe coupled to the shell;
a driver located at the inner portion of the shell to generate a rotary force;
a compressor located in the shell, the compressor including:
a connecting rod configured to convert the rotary force to a linear driving force;
a piston connected to the connecting rod; and
a cylinder into which the piston is movably inserted; and

a muffler assembly configured to transfer a refrigerant suctioned through the suction pipe to the cylinder, the muffler assembly including:
a suction muffler including a first assembly having a suction hole through which a refrigerant is suctioned, a second assembly coupled to an upper side of the first assembly and having a discharge hole, and a first inner portion formed inside the first and the second assemblies;
a discharge muffler including a third assembly, a fourth assembly coupled to a lower side of the third assembly, and a second inner portion formed inside of the third and fourth assemblies; and
a tank installed between the second assembly and the third assembly and having a suction space into which refrigerant passing through the suction muffler is introduced and a discharge space into which refrigerant compressed in the cylinder is introduced,
wherein the suction muffler includes:
an inner pipe installed at the first inner portion of the first and the second assemblies and configured to provide communication between the suction hole and the cylinder, the inner pipe including a first pipe portion that is coupled to the first assembly and extends horizontally, a second pipe portion that is coupled to the second assembly and extends vertically and a bent portion to connect the first pipe portion with the second pipe portion, the second pipe portion having a first coupler to be coupled with the second assembly; and
a second coupler disposed at the bent portion, the second coupler located at the first inner portion of the first and the second assemblies and coupled with the first assembly,

wherein the second pipe portion includes a top surface to be slanted with respect to the first pipe portion, the top surface facing the tank, and
wherein the first coupler includes a protrusion that protrudes upward from the top surface.

2. The reciprocating compressor according to claim 1 , wherein the inner pipe further comprises:
a third coupler disposed at the first pipe portion and coupled to an inner portion of the suction hole.

3. The reciprocating compressor according to claim 2 , wherein the first assembly comprises a first member coupled to the third coupler, the first member having a fitting groove, and
wherein the third coupler is inserted into the fitting groove.

4. The reciprocating compressor according to claim 3 , further comprising a filter installed at the fitting groove to filter a foreign substance in a refrigerant introduced through the suction hole.

5. The reciprocating compressor according to claim 1 , wherein the suction muffler further comprises a second member disposed at an upper, inner surface of the second assembly, the second member having a groove, and
wherein the first coupler is coupled to the groove.

6. The reciprocating compressor according to claim 1 , wherein the suction muffler further comprises a third member disposed at a bottom surface of the first assembly, and
wherein the second coupler is coupled to the third member.

7. The reciprocating compressor according to claim 6 , wherein the third member comprises:
a plurality of protrusions; and
seating grooves formed between adjacent protrusions of the plurality of protrusions on opposite sides of the third member, and
wherein the second coupler is inserted into the seating grooves.

8. The reciprocating compressor according to claim 6 , wherein the suction muffler further comprises a supporter disposed at the bottom surface of the first assembly, the supporter being spaced apart from the third member to support a lower portion of the inner pipe.

9. The reciprocating compressor according to claim 1 , wherein the inner pipe further comprises:
a pipe suction hole formed at the first pipe portion and aligned with the suction hole; and
a pipe discharge hole formed at the second pipe portion and aligned with the discharge hole.

10. The reciprocating compressor according to claim 1 , wherein the second coupler protrudes from opposite side surfaces of the bent portion to be coupled to the suction muffler.

11. The reciprocating compressor according to claim 1 , further comprising a discharge pipe coupled to the shell,
wherein the muffler assembly includes a discharge hose connecting the discharge muffler to the discharge pipe.

Assignees

• Lg Electronics Inc

Inventors

• Kim Dowan
• Lim Sanghyun
• Son Inho

Classifications

• F04B39/0027

  Pulsation and noise damping means · CPC title

• F04B39/0061 Primary

  using muffler volumes · CPC title

• F04B39/0072

  characterised by assembly or mounting · CPC title

• F04B39/123

  Fluid connections · CPC title

• F04B39/14

  Provisions for readily assembling or disassembling · CPC title