Linear compressor

Patent metadata

Field	Value
Publication number	US-10539127-B2
Application number	US-201715584338-A
Country	US
Kind code	B2
Filing date	May 2, 2017
Priority date	May 3, 2016
Publication date	Jan 21, 2020
Grant date	Jan 21, 2020

Abstract

The linear compressor is provided that may include a shell having first and second ends open, a first shell cover that covers a first end of the shell, a second shell that covers a second end of the shell, a compressor body accommodated in the shell to compress a refrigerant, a first support that supports a first end of the compressor body within the shell and coupled to the first shell cover in a state of being spaced apart from the shell, and a second support that supports a second end of the compressor body and fixed to the shell.

First claim

What is claimed is:

1. A linear compressor, comprising:
a shell having both first and second ends open;
a first shell cover that covers the first end of the shell;
a second shell cover that covers the second end of the shell;
a compressor body accommodated in the shell to compress a refrigerant;
a first support that supports a first end of the compressor body within the shell and coupled to the first shell cover in a state of being spaced apart from the shell; and
a second support that supports a second end of the compressor body and fixed to the shell, wherein the first support includes:
a first plate spring; and
a first spring connection portion that extends from a center of the first plate spring; a first buffer, wherein the first shell cover includes a cover coupling portion into which the first spring connection portion is inserted and the first buffer is fitted.

2. The linear compressor according to claim 1 , wherein the second support includes a second plate spring, and wherein a central longitudinal axis of the compressor body passes through a center of the first plate spring and a center of the second plate spring.

3. The linear compressor according to claim 2 , wherein the first buffer includes:
a first contact surface that contacts an end of the first spring connection portion; and
a second contact surface that extends from the first contact surface to come into contact with an outer surface of the first spring connection portion.

4. The linear compressor according to claim 2 , wherein each of the cover coupling portion, the first buffer, and the first spring connection portion has a non-circular cross-section.

5. The linear compressor according to claim 2 , wherein the first plate spring includes:
an outer rim connected to the compressor body;
an inner rim integrally coupled to the first spring connection portion; and
connecting portion that connects the outer rim to the inner rim, wherein one or a plurality of holes through which a portion of the first spring connection portion passes are defined in the inner rim, and the first spring connection portion includes:
a first portion that contacts a first surface of the first plate spring;
a second portion that contacts a second surface of the first plate spring, which is opposite to the first surface; and
a third portion that passes through a center of the inner rim to connect the first portion to the second portion.

6. The linear compressor according to claim 2 , further including a coupling member that couples the first plate spring to the compressor body in a state in which the first plate spring is spaced apart from the compressor body, wherein the coupling member includes:
an insertion portion inserted into the compressor body;
a contact having a diameter greater than a diameter of the insertion portion and extending from an end of the insertion portion to come into contact with the compressor body;
a spring insertion portion having a diameter less than the diameter of the contact and extending from an end of the contact to pass through the first plate spring.

7. The linear compressor according to claim 2 , wherein the second support includes a second spring connection portion that extends from the second plate spring, and wherein the compressor body includes:
a cover protrusion coupled to the second spring connection portion; and
an insertion portion that protrudes from a front surface of the cover protrusion and inserted into the second spring connection portion, wherein a projection is provided on one of an outer circumferential surface or an inner circumferential surface of the second spring connection portion, and a projection insertion groove into which the projection is inserted is defined in the other one of the outer circumferential surface or the inner circumferential surface of the second spring connection portion to prevent the second spring connection portion from relatively rotating with respect to the cover protrusion.

8. The linear compressor according to claim 7 , wherein the second plate spring includes:
an inner rim to which the second spring connection portion is integrally coupled at a central portion thereof;
an outer rim which is spaced apart from the inner rim and from which a fixed portion to be fixed to the shell protrudes; and
a connecting portion that connects the outer rim to the inner rim, and wherein the second spring connection portion includes:
a first portion that contacts a first surface of the second plate spring;
a second portion that contacts a second surface of the second plate spring, which is opposite to the first surface; and
a third portion that passes through a center of the inner rim to connect the first portion to the second portion.

9. The linear compressor according to claim 8 , wherein one or a plurality of holes through which a portion of the second spring connection portion passes are defined in an edge area of the inner rim.

10. The linear compressor according to claim 8 , further including:
a fixing bracket mounted on an inner circumferential surface of the shell;
a second buffer fitted into a hole defined in the second plate spring; and
a coupling member that passes through the second buffer and is inserted into the fixing bracket.

Assignees

• Lg Electronics Inc

Inventors

• Lee Sangmin
• Ki Sunghyun
• Kim Junghae
• Yoon Jihyun
• Yang Jaeyong

Classifications

• F04B35/045 Primary

  using solenoids · CPC title

• F04B39/0027

  Pulsation and noise damping means · CPC title

• F04B39/0044

  with vibration damping supports · CPC title

• F04B39/0072

  characterised by assembly or mounting · CPC title

• F04B39/12

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