发明名称 |
Axial flow fan having a compact circuit board and impeller blade arrangement |
摘要 |
An axial flow fan comprising a printed circuit board which mounts the circuitry for operating the motor which is a bipolar winding motor. A voltage regulator IC and a driving IC for a bipolar winding motor are mounted on the printed circuit board. The fan housing is employed as a heat sink for the voltage regulator. Large circuit elements are eliminated. The axial flow fan further comprises a plurality of blades for cooling electronic components wherein the blades comprise of a plurality of specially designed airfoil sections, each section having along substantially the entire length thereof, a cross-sectional shape characterized by a maximum thickness located substantially constantly between about 19% chord to about 20% chord and a maximum camber located substantially constantly between about 45% chord to about 46% chord. The circuitry, housing, and blades are designed so that the axial width of the axial fan is decreased while maintaining performance parameters and design constraints.
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申请公布号 |
US6129528(A) |
申请公布日期 |
2000.10.10 |
申请号 |
US19980118843 |
申请日期 |
1998.07.20 |
申请人 |
NMB USA INC. |
发明人 |
BRADBURY, PHILLIP JAMES;NGUYEN, PHEP XUAN;JENKINS, JR., CHALMERS R. |
分类号 |
F04D29/38;H02K7/14;H02K11/00;H02K11/04;H02K29/00;(IPC1-7):F04B17/00 |
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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