| 摘要 |
Disclosed herewith is a micro-fan. The micro-fan includes a hub attached to a rotating shaft and a plurality of blades extended from the side surface of the hub. In the micro-fan, if a leading edge is defined as the foremost edge of each of the blades consisting of a straight line portion and one or more arc portions, a trailing edge is defined as the rearmost edge of each of the blades, a chord line is defined as a line connecting two opposite points respectively situated in the leading and trailing edges and a blade angle is defined as an angle formed by the chord line and the horizontal line passing through the same point of the leading edge as that through which the chord line passes and lying in the same vertical plane as that in which the leading edge lies, the straight line portions of the leading and trailing edges are perpendicular to the hub and form a predetermined inside angle.
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