SINGLE-PHASE PERMANENT MAGNET SYNCHRONOUS ELECTRIC MOTOR, AND DUST COLLECTOR

Disclosed are a single-phase permanent magnet synchronous motor and a dust collector. The single-phase permanent magnet synchronous motor comprises a plurality of types of stator teeth, the plurality of types of stator teeth comprising at least: a first-type stator tooth (10); and a second-type stator tooth (20), the first-type stator tooth (10) and the second-type stator tooth (20) enclosing an annular working cavity for accommodating a rotor part (30), wherein the size of a central angle corresponding to a first contour line of an end face of the first-type stator tooth (10) facing the rotor part (30) is different from the size of a central angle corresponding to a second contour line of an end face of the second-type stator tooth (20) facing the rotor part (30). Compared with an ordinary single-phase permanent magnet motor, the motor has a significantly reduced cogging torque, a greatly reduced torque ripple, and an obviously increased motor output torque. The single-phase permanent magnet synchronous motor is small in size, light in weight, simple in structure, convenient for large-scale manufacture and low in manufacturing cost.