公开(公告)号：US20170054352A1

公开(公告)日：2017-02-23

申请号：US15240185

申请日：2016-08-18

Applicant: Johnson Electric S.A.

Inventor： Yue Li ,  Kwong Yip Poon ,  Chui You Zhou ,  Jie Chai ,  Wen Liang Li ,  Lin Ping Gui ,  Tao Zhang ,  Qiang Zhou

IPC: H02K19/04 ,  H02K1/27 ,  H02K3/18 ,  H02K1/14

CPC classification number: H02K19/04 ,  H02K1/146 ,  H02K1/148 ,  H02K1/2706 ,  H02K3/18 ,  H02K21/16 ,  H02K29/03 ,  H02K2213/03

Abstract: A fluid generating device and an electric apparatus utilizing the fluid generating device are provided. The fluid generating device includes a motor and an impeller driven by the motor. The motor is a single phase direct current brushless motor which includes a stator and a rotor. The stator includes a stator core and a stator winding. The stator core includes an outer ring portion, teeth extending inwardly from the outer ring portion, a pole shoe formed at the tooth. Slot openings are formed between the pole shoes. The rotor is received in a receiving chamber defined by the pole shoes. Inner surfaces of the pole shoes and the rotor form therebetween a substantially even air gap. The presence of even air gap can reduce the cogging torque of the motor, thus reducing the startup current and noise of the motor.

Abstract translation: 提供了一种利用流体产生装置的流体产生装置和电气装置。 流体产生装置包括马达和由马达驱动的叶轮。 电动机是包括定子和转子的单相直流无刷电动机。 定子包括定子芯和定子绕组。 定子铁芯包括外环部分，从外环部分向内延伸的齿，形成在齿上的极靴。 在滑靴之间形成狭缝开口。 转子被容纳在由极靴限定的接收室中。 极靴和转子的内表面之间形成基本均匀的气隙。 均匀气隙的存在可以减小电机的齿槽转矩，从而降低电机的启动电流和噪声。

公开(公告)号：US20160341219A1

公开(公告)日：2016-11-24

申请号：US15160225

申请日：2016-05-20

Applicant: Johnson Electric S.A.

Inventor： Yue Li ,  Chui You Zhou ,  Gang Li ,  Yong Wang ,  Yong Li ,  Wei Zhang ,  Ming Chen ,  Jie Chai ,  Kwong Yip Poon ,  Wen Liang Li ,  Lin Ping Gui

IPC: F04D29/66 ,  H02K1/27 ,  H02K5/16 ,  F04D17/16 ,  A47L5/12 ,  F04D29/28 ,  F04D29/44 ,  F04D29/42 ,  A45D20/00 ,  A47K10/48 ,  H02K1/14 ,  F04D25/06

CPC classification number: F04D29/661 ,  A45D20/00 ,  A47K10/48 ,  A47L9/0081 ,  F04D17/16 ,  F04D25/06 ,  F04D29/281 ,  F04D29/4226 ,  F04D29/441 ,  H02K1/148 ,  H02K7/14 ,  H02K29/03 ,  H02K2213/03

Abstract: A single-phase motor, an airflow generating apparatus, and an electric apparatus are provided. The motor includes a stator and a rotor. The stator includes a stator core and stator windings. The stator core includes a ring-shaped yoke and multiple pole portions. A magnetic bridge or slot opening is formed between each two adjacent pole portions. An end surface of each pole portion includes an arc surface. A positioning groove is formed in each arc surface. The arc surfaces of the pole portions cooperatively form a receiving cavity. The rotor includes a rotary shaft and a permanent magnet fixed to the rotary shaft. The permanent magnet is received in the receiving cavity. The arc surfaces are located on a cylindrical surface centered around a rotation axis of the rotary shaft. The cogging torque of the motor can be reduced, thus reducing the startup current and hence the noise of the motor.

Abstract translation: 提供单相电动机，气流发生装置和电气设备。 电动机包括定子和转子。 定子包括定子铁心和定子绕组。 定子铁芯包括环形磁轭和多极部分。 在每个两个相邻的极部之间形成磁桥或槽开口。 每个极部分的端面包括弧形表面。 在每个弧形表面上形成定位槽。 极部分的弧形表面协同地形成接收腔。 转子包括旋转轴和固定到旋转轴的永磁体。 永磁体被容纳在接收腔中。 弧形表面位于围绕旋转轴的旋转轴线居中的圆柱形表面上。 可以减小电动机的齿槽转矩，从而降低启动电流，从而降低电机的噪音。