公开(公告)号：US11710992B2

公开(公告)日：2023-07-25

申请号：US16918556

申请日：2020-07-01

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Jinwoo Cho ,  Hongseok Kim ,  Jae-Woo Park ,  Ui-Yoon Lee

IPC: H02K1/18 ,  F25B31/02

CPC classification number: H02K1/185 ,  F25B31/026

Abstract: A compressor including a housing, and a motor including a stator to be interference fitted into and fixed to an inner circumferential surface of the housing and a rotor rotatable inside the stator. The stator includes an annular back yoke disposed inside the housing, a plurality of teeth extending radially inward from the back yoke, and a coil wound on the plurality of teeth. The back yoke includes a deformation portion compressed and deformed by the housing while the stator is interference fitted into the inner circumferential surface of the housing, a contact portion which protrudes radially outward from the deformation portion and being in contact with the housing, and a cavity formed on a radial inner side of the deformation portion into which the deformation portion is deformed.

公开(公告)号：US11965520B2

公开(公告)日：2024-04-23

申请号：US18091841

申请日：2022-12-30

Applicant: Samsung Electronics Co., Ltd. ,  NEUROS CO., LTD.

Inventor： Jinwoo Cho ,  Woong Hwang ,  Kyeongdong Kim

IPC: F04D29/057

CPC classification number: F04D29/057 ,  F05D2240/53

Abstract: An airfoil journal bearing including a bearing housing having an inner surface forming a hollow so that a rotation shaft is insertable in the hollow; an airfoil in the hollow so that, when the rotation shaft is inserted in the hollow, the airfoil encloses at least 180 to 360 degrees of a circumference of the rotation shaft; and a ring member enclosing an outer surface of the bearing housing. The bearing housing includes an insert slit formed through the bearing housing from the inner surface of the bearing housing to the outer surface of the bearing housing. The airfoil includes an insert part bent from a circumferential direction of the airfoil to a radial direction of the bearing housing and extending, through the insert slit, to the outer surface of the bearing housing. The airfoil is engaged with an outer surface of the ring member through the insert part.

公开(公告)号：US12100994B2

公开(公告)日：2024-09-24

申请号：US16951535

申请日：2020-11-18

Applicant: Samsung Electronics Co., Ltd.

Inventor： Jinwoo Cho ,  Wonsoo Kang ,  Jimin Kim ,  Keeyeon Cho ,  Jinwoo Han ,  Woong Hwang

IPC: H02K1/27 ,  H02K1/2733 ,  H02K3/52 ,  H02K21/16

CPC classification number: H02K1/2733 ,  H02K2213/03

Abstract: A brushless direct current (BLDC) motor includes a rotor having a cylindrical permanent magnet to which a shaft is centrally coupled, and supported to rotate on the shaft. An annular stator surrounds the rotor and includes a plurality of teeth and a wound coil to generate an electromagnetic field. The permanent magnet includes a stress reducing portion, which is provided at opposite end portions thereof, and which has a shape having a mass or a volume which is smaller than a mass or a volume per unit length in an axial direction of a portion of the permanent magnet other than the opposite end portions, to reduce centrifugal stress caused by spinning of the rotor.