| 摘要 |
<p>A motor having a salient pole rotor (12) using a noise mitigating disk (34) at each end of the rotor. The rotor, when rotating, has a tendency to pump air into the motor through slots between the poles of the rotor. The air is forced back out of the motor through slots between the poles of the stator, through air vents in the motor housing, and/or through slots between the poles on the rotor. This air pumping causes an annoying noise, such as a siren effect, in certain environments. The disks placed on the shaft and flush at the ends of the rotor greatly reduce the air pumping, thereby reducing the noise to a negligible level, and resulting in a relatively quiet motor when functioning.</p> |
