| 摘要 |
<p>An axial flow fan (100) 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 (70) is employed as a heat sink for the voltage regulator. Large circuit elements are eliminated. The axial flow fan (70) further comprises a plurality of blades (11) for cooling electronic components wherein the blades (11) comprise 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 (70), and blades (11) are designed so that the width of the axial fan is decreased while maintaining performance parameters and design constraints.</p> |
