Motor, compressor and refrigerator

The invention provides a motor, a compressor and a refrigerator. The motor comprises a stator and a rotor, the stator comprises a stator core, the stator core comprises a stator yoke and a plurality of stator teeth, a stator groove is formed between every two adjacent stator teeth at intervals, the rotor comprises a rotor yoke and a magnetic shoe, the diameter of the groove bottom of each stator groove is A1, the diameter of the inner surface of each stator tooth is A2, and A2 is larger than or equal to 5 * A1 and smaller than or equal to 6 * A1, and the circle center of the inner surface of the stator tooth is located on an extension line of a connecting line of the center of the inner surface of the stator tooth and the circle center of the stator inner hole. According to the motor provided by the invention, the diameter A2 of the inner surface of each stator tooth is set to be 5-6 times of the diameter A1 of the groove bottom of each stator groove, and the circle center of the inner surface of each stator