公开(公告)号：US11384836B2

公开(公告)日：2022-07-12

申请号：US17117823

申请日：2020-12-10

Applicant: LG Electronics Inc.

Inventor： Youngkyun Lim ,  Jeongwoo Kim ,  Donghan Kim

IPC: F16J1/02 ,  F16J1/00 ,  F25B31/02

Abstract: A piston for a compressor includes a bearing portion having a cylindrical shape to define a suction space into which refrigerant is accommodated therein, the bearing portion being provided with a bearing surface facing an inner circumferential surface of the cylinder, a head portion coupled to a front opening of the bearing portion and provided with a plurality of suction ports which communicate with the suction space, the head portion having a compression surface configured to face a compression space to compress the refrigerant in the compression space, and a flange portion coupled to a rear opening of the bearing portion and provided with a through-passage through which the refrigerant is introduced from a muffler unit to the suction space, the flange portion being coupled to a driving portion to transmit driving force to the piston. The bearing surface is subjected to a surface treatment to improve abrasion resistance.

公开(公告)号：US11746767B2

公开(公告)日：2023-09-05

申请号：US17381654

申请日：2021-07-21

Applicant: LG ELECTRONICS INC.

Inventor： Sangik Son ,  Wooju Jeon ,  Youngkyun Lim ,  Donghan Kim

IPC: F04B35/04 ,  F04B39/02 ,  F04B39/12 ,  F04B39/00 ,  F04B53/18 ,  F04B53/16

CPC classification number: F04B35/045 ,  F04B39/0005 ,  F04B39/0292 ,  F04B39/122 ,  F04B53/18 ,  F04B53/162

Abstract: A linear compressor includes a cylinder that defines a compression space of a refrigerant and has a cylindrical shape, and a piston disposed in the cylinder and reciprocating along an axis of the cylinder. The cylinder includes a gas inlet formed on an outer circumferential surface of the cylinder, a supply port radially passing through the cylinder and communicating with the gas inlet, and a recess communicating with the supply port and formed on an inner circumferential surface of the cylinder. An angle formed by an axial cross section of the recess and a straight line extending the supply port and an angle formed by the axial cross section of the recess and a straight line extending the inner circumferential surface of the cylinder each are an acute angle.

公开(公告)号：US11549498B2

公开(公告)日：2023-01-10

申请号：US16983431

申请日：2020-08-03

Applicant: LG Electronics Inc.

Inventor： Donghan Kim ,  Youngkyun Lim ,  Kiil Hwang

IPC: F04B39/00 ,  F04B39/10 ,  F16K17/04 ,  F16K25/00 ,  F04B35/04 ,  F16K15/14 ,  F16K99/00 ,  F04B39/12

Abstract: A linear compressor includes a discharge valve detachably attached to a front end surface of a cylinder to open and close a compression space of the cylinder; and a valve spring elastically supporting a rear surface of the discharge valve to press the discharge valve toward the front end surface of the cylinder. The discharge valve includes reinforced fiber, and the reinforced fiber is arranged parallel to the front end surface of the cylinder. Accordingly, while a rigidity of the discharge valve is improved, a weight of the valve is reduced to enhance responsiveness of the valve, suppress abrasion of the cylinder, and reduce striking sound.