公开(公告)号：US11863021B2

公开(公告)日：2024-01-02

申请号：US17524938

申请日：2021-11-12

Applicant: LG Electronics Inc.

Inventor： Inbum Park ,  Bokann Park ,  Chisung Park ,  Donghyun Lee

IPC: H02K1/00 ,  H02K7/00 ,  H02K21/00 ,  H02K1/276 ,  F04B35/04 ,  F25B31/02 ,  H02K1/28 ,  H02K7/02 ,  H02K21/14

CPC classification number: H02K1/276 ,  F04B35/04 ,  F25B31/023 ,  H02K1/28 ,  H02K7/02 ,  H02K21/14

Abstract: A hermetic compressor includes an electric motor that includes a rotor having a plurality of permanent magnets inserted into a rotor core, a connection part made of a non-magnetic material and provided at an axial end portion of the rotor core, and an inertial core made of a magnetic material and provided at an axial end of the connection part. The connection part includes a plurality of first fixing portions, a plurality of second fixing portions spaced apart from the plurality of first fixing portions in an axial direction, and a plurality of link portions disposed between the plurality of first fixing portions and the plurality of second fixing portions.

公开(公告)号：US20220145872A1

公开(公告)日：2022-05-12

申请号：US17491682

申请日：2021-10-01

Applicant: LG ELECTRONICS INC.

Inventor： Mingeon JEONG ,  Bokann Park ,  Kyoungjun Park ,  Seeun Kim

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

Abstract: A hermetic compressor may include a frame, a crankshaft, and an oil pump. The crankshaft may be rotatably mounted to the frame. The oil pump may be mounted to a lower portion of the crankshaft to be rotatable together with the crankshaft. The oil pump may pump oil from a lower region to an upper region of a shell using centrifugal force. The crankshaft may be provided with a hollow hole therein that is inclined in two directions with respect to an axial direction of the crankshaft. This may result in increasing a dynamic pressure for scattering the oil to the upper region of the shell and an oil supply amount.