| 摘要 |
A single phase permanent magnet motor (10) includes a stator (20) and a rotor (50). The stator (20) includes a stator core (30) and a stator winding (39). The stator core (30) includes an outer yoke (31), teeth (33) extending inwardly from the outer yoke (31), and pole shoes (35) extending from inner ends of the teeth (33). The rotor (50) is received in a space cooperatively defined by the pole shoes (35). The rotor (50) includes circumferentially arranged permanent magnetic poles (55). An outer circumferential surface of the permanent magnetic poles (55) is concentric with an inner circumferential surface of the pole shoes (35), such that a uniform air gap is formed between the pole shoes (35) and magnetic poles (55). The single phase permanent magnet motor (10) forms the uniform air gap, which reduces the vibration and noise. The pole shoes (35) form invisible positioning slots (38), which avoids the negative effect of the positioning slots (38)to the thickness of the air gap and reduces the startup dead point. |
