Fluid Generating Device and Electric Apparatus Using the Same

摘要

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.

主权项

1. A fluid generating device comprising:
a single phase motor comprising:
a stator comprising a stator core and a stator winding wound around the stator core, the stator core comprising a yoke, a plurality of teeth extending inwardly from the yoke, a pole face formed at a distal end of each of the teeth and extending along a circumferential direction of the motor;a rotor rotatable relative to the stator, the rotor being received in a receiving chamber surrounded by the pole faces, the rotor comprising a plurality of magnetic poles confronting the pole faces of the stator, outer surfaces of the magnetic poles of the rotor and the pole faces of the stator being coaxial with each other to thereby form there between a substantially even air gap; and an impeller being driven by the rotor to generate a fluid flow.