| 摘要 |
To prevent the generation of noise from axial oscillations of the fan wheel on electric machinery, especially motors and generators in motor vehicles, the fan wheel is composed of a support assembly consisting of a plurality of adjacent metal discs or rings, surrounded by a preferably molded plastic fan circle in which the fan blades are embedded. The component discs of the support assembly may be of different thickness to provide different natural resonant frequencies, thereby further suppressing axial oscillations. |
