Linear compressor

Patent metadata

Field	Value
Publication number	US-10323630-B2
Application number	US-201715496077-A
Country	US
Kind code	B2
Filing date	Apr 25, 2017
Priority date	May 3, 2016
Publication date	Jun 18, 2019
Grant date	Jun 18, 2019

Abstract

A linear compressor is provided that may include a shell; a compressor body accommodated in the shell to compress a refrigerant; a discharge cover assembly through which the refrigerant compressed in the compressor body may be discharged; a cover pipe that extends from the discharge cover assembly to discharge the refrigerant discharged into the discharge cover assembly to an outside of the discharge cover assembly; a discharge pipe coupled to the shell to discharge the refrigerant flowing along the cover pipe to an outside of the shell; a loop pipe having a first end connected to the cover pipe and a second end connected to the discharge pipe; and a coupling member that respectively couples both the first and second ends of the loop pipe to the cover pipe and the discharge pipe. The coupling member may include a connection member, a first portion of which is inserted into the loop pipe and a second portion of which is inserted into the discharge pipe or the cover pipe. The connection member may be formed of a steel material. At least one of the discharge pipe or the cover pipe may be formed of a steel material.

First claim

What is claimed is:

1. A linear compressor, comprising:
a shell;
a compressor body accommodated in the shell to compress a refrigerant;
a discharge cover assembly through which the refrigerant compressed in the compressor body is discharged;
a cover pipe that extends from the discharge cover assembly to discharge the refrigerant discharged into the discharge cover assembly to an outside of the discharge cover assembly;
a discharge pipe coupled to the shell to discharge the refrigerant flowing along the cover pipe to an outside of the shell;
a loop pipe having a first end connected to the cover pipe and a second end connected to the discharge pipe; and
a coupling member that respectively couples both the first and second ends of the loop pipe to the cover pipe and the discharge pipe, wherein the coupling member includes:
a connection member, a first portion of which is inserted into the loop pipe and a second portion of which is inserted into the discharge pipe or the cover pipe; and
a pipe cover that surrounds the loop pipe and the connection member, wherein the pipe cover includes:
a first cover that surrounds the loop pipe; and
a second cover that extends from the first cover to surround the connection member, wherein the second cover has an outer diameter less than an outer diameter of the first cover.

2. The linear compressor according to claim 1 , wherein the connection member includes:
an insertion portion inserted into the loop pipe; and
one or more stoppers that protrudes from an outer circumferential surface of the connection member to restrict an insertion depth of the insertion portion.

3. The linear compressor according to claim 2 , wherein at least one separation prevention protrusion that prevents the insertion portion from being separated from the loop pipe is provided on an outer circumferential surface of the insertion portion, and a protrusion accommodation groove into which the protrusion is accommodated is defined in an inner circumferential surface of the loop pipe.

4. The linear compressor according to claim 2 , wherein the connection member further includes a coupling portion inserted into the discharge pipe or the cover pipe, wherein the coupling portion has a diameter greater than an outer diameter of the insertion portion, and wherein the second cover has an outer diameter less than the outer diameter of the coupling portion.

5. The linear compressor according to claim 4 , wherein the coupling portion is provided at a point which is spaced apart from the one or more stoppers, and wherein the second cover is provided between the coupling portion and the one or more stoppers.

6. The linear compressor according to claim 5 , wherein an accommodation groove that accommodates an end of the second cover is defined in a surface of the coupling portion, which faces the loop pipe.

7. The linear compressor according to claim 4 , further including a sealing member provided on an outer circumferential surface of the coupling portion, wherein a sealing member seating groove in which the sealing member is seated is defined in the outer circumferential surface of the coupling portion.

8. The linear compressor according to claim 1 , wherein the pipe cover is integrated with the loop pipe and the connection member through insert injection molding, and one or more holes into which a portion of the pipe cover is filled are provided in the loop pipe.

9. The linear compressor according to claim 8 , wherein the one or more holes includes a plurality of holes spaced a predetermined distance from each other in one of a circumferential direction or a longitudinal direction of the loop pipe.

10. The linear compressor according to claim 1 , wherein the connection member is formed of a steel material, and wherein at least one of the discharge pipe or the cover pipe is formed of a steel material.

11. A linear compressor, comprising:
a shell;
a compressor body accommodated in the shell to compress a refrigerant;
a discharge cover assembly through which the refrigerant compressed in the compressor body is discharged;
a cover pipe that extends from the discharge cover assembly to discharge the refrigerant discharged into the discharge cover assembly to an outside of the discharge cover assembly;
a discharge pipe coupled to the shell to discharge the refrigerant flowing along the cover pipe to an outside of the shell;
a loop pipe having a first end connected to the cover pipe and a second end connected to the discharge pipe; and
a plurality of coupling members that couples the first and second ends of the loop pipe to the cover pipe and the discharge pipe, respectively, wherein each of the plurality of coupling members includes a connection member, a first portion of which is inserted into the loop pipe and a second portion of which is inserted into the discharge pipe or the cover pipe, wherein the connection member includes:
an insertion portion inserted into the loop pipe; and
one or more stoppers that protrudes from an outer circumferential surface of the connection member to restrict an insertion depth of the insertion portion, wherein the coupling member includes a pipe cover that surrounds the loop pipe and the connection member, and wherein the pipe cover is integrated with the loop pipe and the connection member through insert injection molding, and one or more holes into which a portion of the pipe cover is filled are provided in the loop pipe.

12. The linear compressor according to claim 11 , wherein the one or more holes includes a plurality of holes spaced a predetermined distance from each other in one of a circumferential direction or a longitudinal direction of the loop pipe, and wherein the pipe cover includes:
a first cover that surrounds the loop pipe; and
a second cover that extends from the first cover to surround the connection member, wherein the second cover has an outer diameter less than an outer diameter of the first cover.

13. The linear compressor according to claim 12 , wherein the connection member further includes a coupling portion inserted into the discharge pipe or the cover pipe, wherein the coupling portion has a diameter greater than an outer diameter of the insertion portion, and the second cover has an outer diameter less than the outer diameter of the coupling portion.

14. The linear compressor according to claim 13 , wherein the coupling portion is provided at a point which is spaced apart from the one or more stoppers, and the second cover is provided between the coupling portion and the one or more stoppers.

15. The linear compressor according to claim 14 , wherein an accommodation groove that accommodates an end of the second cover is defined in a surface of the coupling portion, which faces the loop pipe.

16. The linear compressor according to claim 12 , further including a sealing member provided on an outer circumferential surface of the coupling portion, wherein a sealing member seating groove in which the sealing member is seated is defined in the outer circumferential surface of the coupling portion.

17. The linear compressor according to claim 11 , wherein the connection member is formed of a steel material, and wherein at least one of the discharge pipe or the cover pipe is formed of a steel material.

18. A linear compressor, comprising:
a shell;
a compressor body accommodated in the shell to compress a refrigerant;
a discharge cover assembly through which the refrigerant compressed in the compressor body is discharged;
a cover pipe that extends from the discharge cover assembly to

Assignees

• Lg Electronics Inc

Inventors

• Kang Donghan
• Kim Junghae
• Kim Changkyu
• Kim Hyunsoo
• Yu Hyosang

Classifications

• F04B39/0055

  with a special shape of fluid passage, e.g. bends, throttles, diameter changes, pipes · CPC title

• F04B39/123 Primary

  Fluid connections · CPC title

• F04B35/045

  using solenoids · CPC title

• F04B39/0072

  characterised by assembly or mounting · CPC title

• F04B39/121

  Casings · CPC title