Cooling permanent magnet motor

The invention relates to a cooling permanent magnet motor, and belongs to the technical field of permanent magnet motors, and the method comprises the steps: firstly, enabling a liquid cooling working medium to impact the surfaces of a stator and a rotor through an air nozzle under the action of compressed air in a gas-liquid two-phase flow manner, forming a liquid film, and forming a powerful cooling effect on the surfaces of the stator and the rotor; secondly, the gas-liquid mixture enters an annular air gap between the rotor and the stator, a high-speed rotating liquid film is formed on the surface of the rotor, the liquid cooling working medium moves in the axis direction under the impact of compressed air while doing high-speed rotating motion, and efficient convection forced cooling is formed in the liquid cooling working medium; and finally, the liquid is collected in a negative pressure outlet channel on the stator, and efficient cooling of the permanent magnet motor is realized through a cooling mode