Reciprocating compressor

Patent metadata

Field	Value
Publication number	US-2016131124-A1
Application number	US-201514937505-A
Country	US
Kind code	A1
Filing date	Nov 10, 2015
Priority date	Nov 10, 2014
Publication date	May 12, 2016
Grant date	—

Abstract

A reciprocating compressor according to an aspect includes a driving unit; a connecting rod; a piston; a cylinder; and a valve assembly, wherein the valve assembly includes a valve plate forming a main body, a suction inlet and a discharge outlet disposed at the valve plate and coming in communication with a compression space of the cylinder to guide a refrigerant flow, a suction valve and a discharge valve disposed at the valve plate and selectively opening the suction inlet and the discharge outlet, and a plurality of coupling portions disposed at the valve plate, and a plurality of corresponding coupling portions disposed to correspond to each of the plurality of coupling portions and preventing the valve assembly from being erroneously assembled are disposed at the cylinder.

First claim

What is claimed is:

1 . A reciprocating compressor, comprising:
a driver configured to provide a rotary force; a connecting rod coupled to the driver to convert a rotary motion to a linear motion; a piston connected to the connecting rod to linearly reciprocate; a cylinder configured to accommodate the piston and having a compression space for compressing a refrigerant by the linear reciprocating motion of the piston; and a valve assembly installed at a portion of the cylinder to selectively allow a refrigerant to flow, the valve assembly including:
a valve plate;
a suction inlet and a discharge outlet disposed at the valve plate, and configured to be in communication with the compression space of the cylinder to guide a refrigerant flow;
a suction valve disposed at the valve plate to selectively open the suction inlet;
a discharge valve disposed at the valve plate to selectively open the discharge outlet; and
at least one valve plate coupling portion at the valve plate, and
at least one cylinder coupling portion at the cylinder and coupled to the at least one valve plate coupling portion,
wherein the combination of the at least one valve plate coupling portion and the at least one cylinder coupling portion are configured such that the valve plate is mountable to the cylinder when facing a first direction and is not mountable to the cylinder when facing a second direction opposite the first direction.

2 . The reciprocating compressor according to claim 1 , wherein the at least one valve plate coupling portion includes a plurality of valve plate coupling portions, and
wherein the at least one cylinder coupling portion includes a plurality of cylinder coupling portions.

3 . The reciprocating compressor according to claim 2 , wherein the valve plate includes an edge portion configured to form an outer circumferential surface of the valve plate; and
wherein the plurality of valve plate coupling portions are formed at the edge portion.

4 . The reciprocating compressor according to claim 3 , wherein the plurality of valve plate coupling portions include a first valve plate coupling portion and a second valve plate coupling portion disposed at the edge portion, the first valve plate coupling portion being spaced from the second valve plate coupling portion.

5 . The reciprocating compressor according to claim 4 , wherein at least the second valve plate coupling portion is disposed such that a central portion of the second valve plate coupling portion is spaced apart from a vertical line which passes through the center of the valve plate.

6 . The reciprocating compressor according to claim 4 , wherein a distance which extends clockwise from a central portion of the first valve plate coupling portion to a central portion of the second valve plate coupling portion along the edge portion is different from a distance which extends counterclockwise from the central portion of the first valve plate coupling portion to the central portion of the second valve plate coupling portion along the edge portion.

7 . The reciprocating compressor according to claim 3 , wherein a contact protrusion configured to come in contact with one side of the cylinder to prevent the valve assembly from moving is formed at the edge portion of the valve assembly.

8 . The reciprocating compressor according to claim 2 , wherein each valve plate coupling portion of the plurality of valve plate coupling portions is formed with a different width or size relative to the other valve plate coupling portions of the plurality of valve plate coupling portions.

9 . The reciprocating compressor according to claim 2 , wherein the plurality of valve plate coupling portions includes two or more fixing protrusions configured to protrude from the valve plate.

10 . The reciprocating compressor according to claim 9 , wherein the plurality of cylinder coupling portions includes two or more protrusion grooves into which the two or more fixing protrusions are inserted.

11 . A reciprocating compressor, comprising:
a driver configured to provide a rotary force; a compressor having a piston configured to linearly reciprocate by the rotary force provided from the driver, and a cylinder configured to form a compression space for compressing a refrigerant suctioned thereinto by the piston; a suction/discharge part having a refrigerant inlet for supplying a refrigerant to the cylinder and a refrigerant outlet for discharging a refrigerant compressed in the cylinder; a valve assembly installed at a portion of the cylinder between the suction/discharge part and the cylinder to selectively allow a refrigerant to flow; a gasket mounted between the suction/discharge part and the valve assembly, and configured to be in communication with each of the refrigerant inlet and the refrigerant outlet; and a plurality of fastening protrusions formed at the cylinder or the suction/discharge part, the plurality of fastening protrusions being inserted into the gasket, wherein the gasket includes a plurality of erroneous assembly prevention holes into which a corresponding fastening protrusion of the plurality of fastening protrusions is inserted, each erroneous assembly prevention hole of the plurality of erroneous assembly prevention holes having a different shape or size relative to the other erroneous assembly prevention holes of the plurality of erroneous assembly prevention holes.

12 . The reciprocating compressor according to claim 11 , wherein the gasket includes a first flow hole configured to be in communication with the refrigerant inlet, and a second flow hole configured to be in communication with the refrigerant outlet, and
wherein the first flow hole has a different size or shape relative to the second flow hole.

13 . The reciprocating compressor according to claim 11 , wherein the corresponding fastening protrusion is formed to have a same shape or size of the erroneous assembly prevention hole into which the corresponding fastening protrusion is inserted.

14 . The reciprocating compressor according to claim 11 , wherein the plurality of fastening protrusions is formed at the suction/discharge part, and protrudes toward the cylinder.

15 . The reciprocating compressor according to claim 11 , wherein the gasket includes:
a main body portion configured to be in communication with each of the refrigerant inlet and the refrigerant outlet; and a plurality of coupling portions configured to extend from the main body portion, and wherein each of the coupling portion includes one of the plurality of erroneous assembly prevention holes.

16 . The reciprocating compressor according to claim 15 , wherein the plurality of coupling portions includes:
a first coupling portion configured to extend from the main body portion; and a second coupling portion disposed apart from the first coupling portion and configured to extend from the main body portion, and wherein the plurality of erroneous assembly prevention holes include:
a first erroneous assembly prevention hole formed at the first coupling portion; and
a second erroneous assembly prevention hole formed at the second coupling portion.

17 . The reciprocating compressor according to claim 16 , wherein the main body portion is formed in a circular or oval shape, and
wherein the first coupling portion and the second coupling portion extend in a radial direction of the main body portion.

18 . The reciprocating compressor according to claim 17 , wherein an angle between a segment which connects the center of the first

Assignees

• Lg Electronics Inc

Inventors

• Kim Dowan
• Cho Jaeho
• Yang Yongjin
• Son Inho
• Park Kangkyun
• Choi Jeayoung

Classifications

• F04B35/01

  the means being mechanical · CPC title

• F04B39/10 Primary

  Adaptations or arrangements of distribution members · CPC title

• F04B39/0061

  using muffler volumes · CPC title

• F04B39/1066 Primary

  Valve plates · CPC title

• F04B39/1073

  the members being reed valves · CPC title