| 发明名称 |
AXIAL FAN |
| 摘要 |
There is provided with an axial fan comprising an impeller having a plurality of vanes; a motor rotating the impeller; a casing housing the impeller and the motor; a motor base mounting the motor; and a plurality of spokes connecting the motor base and the casing, wherein the motor base has a plurality of reinforcement ribs thereon, the plurality of reinforcement ribs being equal to or more than the plurality of spokes in number, and wherein the casing has a natural frequency equal to or higher than a frequency being transmitted to the casing from the motor when the motor is rotated at a rotation speed of 20000 rpm or more. |
| 申请公布号 |
US2014186198(A1) |
申请公布日期 |
2014.07.03 |
| 申请号 |
US201314063674 |
申请日期 |
2013.10.25 |
| 申请人 |
MINEBEA CO., LTD. |
发明人 |
ODA Yusuke;NONAKA Tomoko;NISHIZAWA Masaaki;UCHIKAWA Shinichi |
| 分类号 |
F04D29/66;F04D25/06 |
主分类号 |
F04D29/66 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. An axial fan comprising:
an impeller having a plurality of vanes; a motor rotating the impeller; a casing housing the impeller and the motor; a motor base mounting the motor; and a plurality of spokes connecting the motor base and the casing, wherein the motor base has a plurality of reinforcement ribs thereon, the plurality of reinforcement ribs being equal to or more than the plurality of spokes in number, and wherein the casing has a natural frequency equal to or higher than a frequency being transmitted to the casing from the motor when the motor is rotated at a rotation speed of 20000 rpm or more. |
| 地址 |
Kitasaku-gun JP |
