MOTOR, COMPRESSOR, AND REFRIGERATION DEVICE

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The present application provides a motor, a compressor, and a refrigeration device. The motor comprises : a stator, the stator comprising a stator core and a winding, the stator core being provided with multiple stator protruding teeth, and the winding being wound on the multiple stator protruding teeth; and a rotor, the rotor comprising a rotor core and permanent magnets, and the permanent magnets being disposed on the rotor core. A ratio of the number of the stator protruding teeth to the number of phases of the winding is configured to be suitable for adjusting the intensity of a demagnetization reverse magnetic field generated by energization of the winding. Since the ratio of the number of the stator protruding teeth to the number of phases of the winding is designed to adjust the intensity of the demagnetization reverse magnetic field generated by the energization of the winding, even if the permanent magnets lack heavy rare earth elements such as dysprosium and terbium, the demagnetization reverse magnetic field generated by the energization of the winding can still be reduced by increasing the ratio of the number of the stator protruding teeth to the number of phases of the winding, so that the demagnetization reverse magnetic field cannot demagnetize the permanent magnets, thereby improving the overall anti-demagnetization capability of the motor, and facilitating the proposal of a motor requiring fewer heavy rare earth elements and having anti-demagnetization capability.