发明名称 |
Cooling apparatus for electrical equipment |
摘要 |
A cooling apparatus for electrical equipment having heat-generating components, air-intake apertures and air-outlet apertures includes a fan, a forward-rotation power control circuit, a reverse-rotation power control circuit, an indicator, a long-term timer and a short-term timer. The forward-rotation power control circuit rotates the fan in a forward direction such that air flows in through the air-intake apertures, over the heat-generating components and away through the air-outlet apertures, in response to a forward-rotation command signal. The reverse-rotation power control circuit rotates the fan in the opposite direction. The long-term timer continuously applies the forward-rotation command signal to the forward-rotation power control circuit during a first predetermined period. The indicator indicates the expiration of the first predetermined period. When the indicator is reset, the short-term timer is enabled to continuously apply the reverse-rotation command signal to the reverse-rotation power control circuit during a second predetermined period shorter than the first predetermined period.
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申请公布号 |
US6152699(A) |
申请公布日期 |
2000.11.28 |
申请号 |
US19970980938 |
申请日期 |
1997.12.01 |
申请人 |
SANSHA ELECTRIC MANUFACTURING COMPANY, LIMITED |
发明人 |
SHIKATA, KUNIO;KARINO, KUNIO;OKADA, TOSHIKATSU |
分类号 |
H02K9/02;F04D19/00;H05K7/20;(IPC1-7):F04B49/00 |
主分类号 |
H02K9/02 |
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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