发明名称 |
Axial fan, centrifugal fan, and electronic equipment employing one of these fans |
摘要 |
A low-noise axial fan is provided with whirring sound minimized. The axial fan includes a plurality of blades arranged around a rotation axis at predetermined layout pitches. The blades are arranged at varied layout pitches. For instance, the layout pitch between the two adjacent blades may be different from the layout pitch between the remaining blades. This arrangement controls the whirring sound of the fan, which would be high in level if the blades were arranged at an equal layout pitch. A low-noise axial fan thus results.
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申请公布号 |
US6488472(B1) |
申请公布日期 |
2002.12.03 |
申请号 |
US20010769263 |
申请日期 |
2001.01.26 |
申请人 |
SEIKO EPSON CORPORATION |
发明人 |
MIYAZAWA ATSUSHI |
分类号 |
F04D29/38;F04D29/28;F04D29/30;F04D29/32;F04D29/66;(IPC1-7):F04D29/28 |
主分类号 |
F04D29/38 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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