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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
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.
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公开(公告)号：US20220170475A1
公开(公告)日：2022-06-02
申请号：US17482712
申请日：2021-09-23
Applicant: LG ELECTRONICS INC.
Inventor： Inbum Park , Kyoungjun Park , Kiyeon Lee
Abstract: A hermetic compressor includes: a compression unit; a motor unit; a crankshaft that connects the motor unit and the compression unit; and a bearing member provided with a shaft receiving hole so as to support the crankshaft in a radial direction. An oil supply groove that defines a part of an oil supply passage is formed on an outer circumferential surface of the crankshaft, and the oil supply groove is provided between the outer circumferential surface of the crankshaft and an inner circumferential surface of the bearing member facing the outer circumferential surface of the crankshaft to be located out of pressed regions generated when the crankshaft rotates. As the oil supply groove that supplies oil to a bearing surface between the crankshaft and a main bearing is formed by avoiding the pressed regions, oil may be smoothly supplied to the bearing surface.
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