| 发明名称 |
Electric Fan |
| 摘要 |
An electric fan has an electric motor driving an axial fan. The fan has a cup-shaped hub, with a front wall, and a side wall from which there extends a plurality of outer blades. The motor has an outer rotor including a rotor cap to which the front wall of the hub is attached. From the inner surface of the hub and/or from the outer surface of the rotor cap, there extend protruding formations which, when the fan performs an oscillation of predetermined extent with respect to the rotor, impact the rotor cap and/or the hub, limiting the extent of the oscillation of the fan with respect to the rotor. |
| 申请公布号 |
US2015300374(A1) |
申请公布日期 |
2015.10.22 |
| 申请号 |
US201514689832 |
申请日期 |
2015.04.17 |
| 申请人 |
Johnson Electric S.A. |
发明人 |
GABBIN Giuliano;PROCOPIO Ermanno;Morra Giuseppe |
| 分类号 |
F04D29/66;F04D25/06;F04D29/52;F04D29/32;F04D29/38;F04D19/00;F04D25/10 |
主分类号 |
F04D29/66 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. An electric fan comprising:
an electric motor including an external rotor and an internal stator; and an axial fan including a substantially cup-shaped central hub, with a front wall, facing and connected to the rotor, and a side wall which surrounds the rotor, and from which there extends a plurality of outer blades, wherein protruding formations extend from the inner surface of the hub of the fan and/or from the outer surface of the rotor, and wherein, when the fan performs an oscillation of predetermined extent with respect to the rotor, the protruding formations impact the rotor and/or the hub, limiting the extent of the oscillation of the fan with respect to the rotor. |
| 地址 |
Murten CH |
