公开(公告)号：US20230407915A1

公开(公告)日：2023-12-21

申请号：US18144433

申请日：2023-05-08

Applicant: LG Electronics Inc.

Inventor： Younghwan KIM ,  Jinkook KIM ,  Sangmin KIM

IPC: F16C33/10 ,  F16C29/04

CPC classification number: F16C33/103 ,  F16C29/046 ,  F04B39/122

Abstract: A reciprocating compressor may include a ball bearing positioned between a thrust surface of a cylinder block and a thrust surface of a crankshaft. The ball bearing may include a ball cage in a ring shape, a plurality of balls rotatably coupled to the ball cage, at least one washer positioned at least one of between the thrust surface of the cylinder block and the plurality of balls and between the thrust surface of the crankshaft and the plurality of balls, and a rotation preventing portion that limits rotation of the washer with respect to the corresponding thrust surface. According to a reciprocating compressor having the rotation preventing portion, as relative rotation of the washer with respect to the thrust surface of the cylinder block and/or the thrust surface of the crankshaft is restrained even if a rotational force higher than a viscous force acting on the washer is applied because a viscosity of oil is lowered, it is possible to eliminate the problem of deterioration of reliability and performance of the compressor.

公开(公告)号：US20210215143A1

公开(公告)日：2021-07-15

申请号：US16852725

申请日：2020-04-20

Applicant: LG ELECTRONICS INC.

Inventor： Ki Yeon LEE ,  Jinkook KIM ,  Wonseok KANG

IPC: F04B35/04 ,  F04B39/12

Abstract: A motor assembly for compressing a fluid by causing a rotational shaft to reciprocate by providing a drive force to the rotational shaft, and a reciprocating compressor including a motor assembly are provided. The motor assembly may include a cylinder block in which a bore is formed and which is penetrated by the rotational shaft, a stator coupled to the cylinder block, a rotor installed at an outer circumferential surface of the stator so as to be rotated by the stator and which is coupled to the rotational shaft so as to rotate together with the rotational shaft, and at least one fastening member that fastens the stator and the cylinder block to each other such that the stator is supported by the cylinder block.

公开(公告)号：US20240418158A1

公开(公告)日：2024-12-19

申请号：US18702208

申请日：2022-06-29

Applicant: LG ELECTRONICS INC.

Inventor： Younghwan KIM ,  Jinkook KIM ,  Jongmok LEE

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

Abstract: A reciprocating compressor according to an embodiment of the present disclosure includes a crankshaft including a shaft portion, an eccentric mass portion, and a pin portion, and an oil groove positioned on an outer surface of the pin portion is configured to supply an oil to a pressurized portion of a bearing immediately before entering a section in which a gas load increases. For example, the oil groove can supply the oil to the bearing in a stroke section immediately before a crank angle reaches 270°. According to the above configuration, the oil is supplied to the pressurized portion of the bearing formed by the pin portion of the crankshaft and a connecting rod immediately before entering a stroke section subjected to a high load. Accordingly, lubrication by the oil can be smoothly performed in the stroke section subjected to the high load, and oil shortage can be improved even if the oil groove adopts a structure in which the bearing is open at the top and bottom.

公开(公告)号：US20190093647A1

公开(公告)日：2019-03-28

申请号：US16136403

申请日：2018-09-20

Applicant: LG ELECTRONICS INC.

Inventor： Young Hwan KIM ,  Wonseok KANG ,  Jinkook KIM

IPC: F04B39/02 ,  F04B35/01 ,  F16N7/36

Abstract: A lubricating oil supply apparatus may include a rotational portion that rotates together with a rotational shaft and a fixed portion that maintains a fixed location thereof and supplies oil through a space that circles with respect to a rotational center of the rotational portion, thereby supplying oil regardless of a rotational direction of the rotational shaft.