公开(公告)号：US10900477B2

公开(公告)日：2021-01-26

申请号：US16292826

申请日：2019-03-05

Applicant: LG ELECTRONICS INC.

Inventor： Hyunsoo Kim ,  Geonwoo Kim ,  Junghae Kim ,  Chulgi Roh

IPC: F04B39/12 ,  F04B39/10 ,  F04B39/00 ,  F04B35/04

Abstract: A linear compressor includes a shell, a frame in the shell, a cylinder defining a compression space, a piston in the cylinder, a motor assembly configured to drive the piston, a discharge cover unit defining a discharge space, a discharge valve configured to selectively open and close the compression space, and a valve spring assembly configured to provide elastic force that causes the discharge valve to contact the cylinder. The discharge cover unit includes a cover housing that defines an opening configured to communicate with the discharge space, a discharge cover that inserts into the cover housing through the opening, that contacts an inner surface of the cover housing, and that covers the opening, and a fixing ring configured to be positioned at an inner surface of the discharge cover. A thermal expansion coefficient of the fixing ring is greater than that of the discharge cover.

公开(公告)号：US20190032649A1

公开(公告)日：2019-01-31

申请号：US15801474

申请日：2017-11-02

Applicant: LG ELECTRONICS INC.

Inventor： Chulgi Roh ,  Dongkyun Ha ,  Kiil Hwang ,  Sangeun Bae ,  Sangmin Lee

IPC: F04B39/00 ,  F04B39/12

CPC classification number: F04B39/0044 ,  F04B35/04 ,  F04B35/045 ,  F04B39/121 ,  F04B39/123 ,  F04B39/127 ,  F04B39/14 ,  F16F15/067

Abstract: A linear compressor is provided that may include a shell having a cylindrical shape, a compressor main body inserted into the shell, a first shell cover coupled to a rear end of the shell, a first support coupled to a front end of the compressor main body that supports the front end of the compressor main body, and a second support that couples a rear end of the compressor main body to the first shell cover and supports the rear end of the compressor main body. The first support may include a support head coupled to a center of the front end of the compressor main body, and a pair of dampers having both ends respectively coupled to the support head and an inner circumferential surface of the shell.

公开(公告)号：US12258957B2

公开(公告)日：2025-03-25

申请号：US17358302

申请日：2021-06-25

Applicant: LG Electronics Inc.

Inventor： Sangjin Song ,  Junghae Kim ,  Chulgi Roh

IPC: F04B53/14 ,  F04B53/16

Abstract: A linear compressor includes: a piston configured to reciprocate in an axial direction, and a cylinder that is provided on a radially outer side of the piston to accommodate the piston and that defines a compression space with the piston. The cylinder includes: a gas hole defined at the cylinder such that a first end of the gas hole is at an outer circumferential surface of the cylinder and a second end of the gas hole is at an inner circumferential surface of the cylinder, and a gas pocket that is in communication with the gas hole and that is recessed from the inner circumferential surface of the cylinder, where a length of the gas pocket in the axial direction of the cylinder is longer than a length of the gas pocket in a circumferential direction of the cylinder.

公开(公告)号：US11725642B2

公开(公告)日：2023-08-15

申请号：US16929546

申请日：2020-07-15

Applicant: LG Electronics Inc.

Inventor： Geonwoo Kim ,  Junghae Kim ,  Jaeyong Jang ,  Donghan Kang ,  Jinwoong Jung ,  Chulgi Roh

IPC: F04B35/04 ,  F04B39/12 ,  F04B39/16 ,  F04B39/02 ,  F04B53/20 ,  B01D46/00

CPC classification number: F04B35/045 ,  F04B39/122 ,  F04B39/16 ,  B01D46/0005 ,  B01D46/0012 ,  B01D46/0047 ,  B01D2279/35 ,  F04B39/023 ,  F04B39/0292 ,  F04B53/20 ,  F05B2210/14 ,  F05B2260/98

Abstract: A linear compressor includes a compressor body configured to compress a refrigerant. The compressor body includes a cylinder, a discharge valve, a groove, a gas hole, and a flow restrictor. The cylinder receives a piston. The discharge valve is configured to open and close one side of the cylinder and define a compression space for the refrigerant together with the piston. The groove is defined in an outer circumferential surface of the cylinder and into which at least a portion of the refrigerant discharged through the discharge valve is introduced. The gas hole is defined in the groove to pass through the cylinder. The flow restrictor includes twisting wires made of different materials and is disposed to be wound around the groove.

公开(公告)号：US10830232B2

公开(公告)日：2020-11-10

申请号：US16249417

申请日：2019-01-16

Applicant: LG Electronics Inc.

Inventor： Hyunsoo Kim ,  Geonwoo Kim ,  Chulgi Roh

IPC: F04B35/04 ,  F04B53/04 ,  F04B39/08 ,  F04B39/12

Abstract: A linear compressor includes a shell, a discharge pipe coupled to the shell, a compressor main body located inside of the shell, a cover housing that defines a discharge space that discharges refrigerant to the discharge pipe, and a guide pipe coupled to the cover housing and configured to guide refrigerant from the discharge space to the discharge pipe. The cover housing includes a flange portion configured to couple to the compressor main body, a chamber portion that extends from the flange portion and that defines the discharge space, an accommodation groove configured to accommodate the guide pipe, and a communication groove that penetrates an inner wall of the accommodation groove and that extends to the discharge space. The guide pipe is configured to insert into the communication groove in a state in which the guide pipe is accommodated in the accommodation groove.

公开(公告)号：US10527032B2

公开(公告)日：2020-01-07

申请号：US15804142

申请日：2017-11-06

Applicant: LG ELECTRONICS INC.

Inventor： Hyunsoo Kim ,  Geonwoo Kim ,  Chulgi Roh

IPC: F04B39/12 ,  F04B35/04 ,  F04B39/00

Abstract: A linear compressor includes a frame including a frame body, a frame head that extends from a front end of the frame body, a flange groove defined in the frame head, and a body hole that passes through the frame body; a cylinder including a cylinder body inserted into the body hole, a cylinder flange, and a cylinder head provided on a front end of the cylinder flange; and a lock ring press-fitted to be coupled to the flange groove and provided in a space defined between the cylinder head and an inner circumferential surface of the flange groove.

公开(公告)号：US09695811B2

公开(公告)日：2017-07-04

申请号：US14317120

申请日：2014-06-27

Applicant: LG ELECTRONICS INC.

Inventor： Kyoungseok Kang ,  Wonhyun Jung ,  Chulgi Roh ,  Kiwook Song ,  Jookon Kim ,  Sangsub Jeong

IPC: F04B35/04 ,  F04B39/00 ,  F04B39/12 ,  F04B39/02

CPC classification number: F04B35/045 ,  F04B39/0061 ,  F04B39/0284 ,  F04B39/122 ,  F04B39/127

Abstract: A linear compressor is provided. The linear compressor may include a shell having a refrigerant inlet, a cylinder arranged in the shell, a piston that reciprocates in the cylinder, a motor assembly that provides a drive force to the piston and having a permanent magnet, and a frame arranged on or at a side of the motor assembly. The cylinder may include a first outer circumference with which an inner stator of the motor assembly may be combined, and a second outer circumference that extends from the first outer circumference and forcibly press-fit into the frame.