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公开(公告)号：US11898576B2
公开(公告)日：2024-02-13
申请号：US17548228
申请日：2021-12-10
Inventor： Huanwen Huang , Hsienchou Lin , Jingyi Luo
CPC classification number: F04D29/441 , F04D17/16 , F04D25/06 , F04D29/624
Abstract: A centrifugal fan and an air conditioning apparatus are provided. The centrifugal fan includes a top plate, a baseplate, a motor, a flow guiding cover, and a plurality of blades. A motor mounting hole is disposed at a central position of the baseplate, and the motor has a motor housing. The motor housing is mounted on the motor mounting hole and is fastened to the baseplate, and the motor at least partially extends between the baseplate and top plate. The blades are fastened between the top plate and the baseplate, and the plurality of blades are disposed around the motor. The flow guiding cover is sheathed on an outer peripheral side of the motor housing, and is detachably mounted on the baseplate.
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公开(公告)号：US20240128816A1
公开(公告)日：2024-04-18
申请号：US18395645
申请日：2023-12-25
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Bin Lai , Yu Wang , Zijing Wang , Huanwen Huang
CPC classification number: H02K1/2766 , H02K11/25 , H02K21/14
Abstract: A variable flux permanent-magnet synchronous motor, a powertrain, and a fan are disclosed, which are applied to the field of motors. The variable flux permanent-magnet synchronous motor includes a stator system 10, a rotor system 20, and a variable magnet system 30. The variable magnet system 30 is located in the stator system 10 or the rotor system 20. The rotor system 20 includes a first permanent magnet 201. The variable magnet system 30 includes a second permanent magnet 301 and a heating apparatus 302. Coercive force of the second permanent magnet 301 is lower than coercive force of the first permanent magnet 201. The heating apparatus 302 is configured to heat the second permanent magnet 301, so that the second permanent magnet 301 has variable flux in a magnetic field.
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