ELECTRIC MOTOR AND ELECTRIC PUMP

摘要

An electric pump has a pump body, a pump magnet received in the pump body, an impeller received in the pump body and fixed to the pump magnet, and a disc type electric motor. The electric motor includes a stator, disc type coils fixed to a surface of the stator, a rotor rotatably positioned above the coils, and a circuit board electrically connected to the coils. The rotor has a rotor magnet positioned beneath the pump body and magnetically coupled to the pump magnet. When the coils are energized, an axial magnetic field is generated to drive the rotor and, through the magnetic coupling between the rotor magnet and the pump magnet, rotate the impeller.

主权项

1. An electric pump, comprising:
a pump body; a pump magnet rotatably disposed in the pump body; an impeller disposed in the pump body and fixed to the pump magnet; and a disc type electric motor positioned beneath the pump body for rotating the magnet and the impeller, the disc type electric motor comprising a stator and a rotor, the stator comprising: a stator core, a number of disc type coils fixed to a surface of the stator core, and a circuit board positioned on an end of the stator and electrically connected to the disc type coils, the rotor comprising a rotor magnet positioned between the disc type coils and the pump body, the magnet being positioned confronting the pump magnet to produce a magnetic coupling between the rotor magnet and the pump magnet, wherein when electrical power is applied to the circuit board, the disc type coils generate an axial magnetic field to drive the rotor, thereby rotating the pump magnet and the impeller.