US 12,313,051 B2Granted

Linear compressor

AssigneeLG Electronics Inc.

InventorsWooju Jeon, Kyungmin Lee, Sangik Son

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Abstract

An elastic body and a linear compressor including the same are provided. The linear compressor comprises a cylinder; a piston reciprocating axially inside the cylinder; a drive unit disposed outside the cylinder; a stator cover coupled to a rear of the drive unit; a spring supporter comprising a body portion coupled to a rear of the piston and a seating portion extending outward from the body portion and disposed at a rear of the stator cover; a back plate disposed at a rear of the seating portion; a plurality of first elastic bodies disposed between the stator cover and the seating portion; and a plurality of second elastic bodies disposed between the seating portion and the back plate, wherein the plurality of first elastic bodies and the plurality of second elastic bodies each form a closed space in which a gas is accommodated.

Claims10

Dependent claims

A linear compressor comprising:

a cylinder;
a piston configured to reciprocate axially inside the cylinder;
a drive unit disposed outside the cylinder;
a stator cover coupled to a rear of the drive unit;
a spring supporter comprising a body portion coupled to a rear of the piston and a seating portion configured to extend outward from the body portion and disposed at a rear of the stator cover;
a back plate disposed at a rear of the seating portion;
a plurality of first elastic bodies disposed between the stator cover and the seating portion, the plurality of first elastic bodies being in contact with at least one of a rear surface of the stator cover or a front surface of the seating portion;
and
a plurality of second elastic bodies disposed between the seating portion and the back plate, the plurality of second elastic bodies being in contact with at least one of a rear surface of the seating portion or a front surface of the back plate,
wherein the plurality of first elastic bodies and the plurality of second elastic bodies each form a closed space in which a gas is accommodated,
wherein the at least one of the rear surface of the stator cover or the front surface of the seating portion defines a first seating groove that is in contact with the plurality of first elastic bodies,
wherein the at least one of the rear surface of the seating portion or the front surface of the back plate defines a second seating groove that is in contact with the plurality of second elastic bodies, and
wherein the first and second seating grooves have a curvature less than curvatures of the plurality of first elastic bodies and the plurality of second elastic bodies.

10 more elements

A linear compressor comprising:

a cylinder;
a piston configured to reciprocate axially inside the cylinder;
a drive unit disposed outside the cylinder;
a stator cover coupled to a rear of the drive unit;
a spring supporter comprising a body portion coupled to a rear of the piston and a seating portion configured to extend outward from the body portion and disposed at a rear of the stator cover;
a back plate disposed at a rear of the seating portion;
a first elastic body disposed between the stator cover and the seating portion, the first elastic body being in contact with at least one of a rear surface of the stator cover or a front surface of the seating portion;
and
a second elastic body disposed between the seating portion and the back plate, the second elastic body being in contact with at least one of a rear surface of the seating portion or a front surface of the back plate,
wherein the first elastic body surrounds the body portion and is formed as one body in a circumferential direction,
wherein a shape of the second elastic body corresponds to a shape of the first elastic body,
wherein the second elastic body overlaps axially the first elastic body,
wherein each of the first elastic body and the second elastic body forms a closed space in which a gas is accommodated,
wherein the at least one of the rear surface of the stator cover or the front surface of the seating portion defines a first seating groove that is in contact with the first elastic body,
wherein the at least one of the rear surface of the seating portion or the front surface of the back plate defines a second seating groove that is in contact with the second elastic body, and
wherein the first and second seating grooves have a curvature less than curvatures of the first elastic body and the second elastic body.

13 more elements

Dependencies are inferred from the claim text.

Facts

Application: 18/011,431Filed 15 Jun 2021
Priority: KR 10-2021-00028318 Jan 2021
Published: US 2023/0332588 A119 Oct 2023
Granted: 27 May 2025
Term ends: Not estimatedThe source records don’t support an estimate.

Classification16 codes

F04B 35/04
Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or…:…
F04B 35/045
The means being electric: using solenoids
F04B 39/00
Component parts, details, or accessories, of pumps or pumping systems specially adapted
F04B 39/0005
Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of…:…