Samsung Electro-mechanics Co., Ltd.

Woang Sik Park

Chang Keun Jun

Disclosed is a micro fan. The micro fan comprises a hub rotatably mounted to a shaft, and a plurality of blades radially formed on a circumferential outer surface of the hub, wherein each blade has an airfoil-shaped cross-section which generates lift force larger than drag force; and wherein, when assuming that one end of the airfoil-shaped cross-section of each blade, which is rounded at a predetermined radius, is a leading edge, the other end of the airfoil-shaped cross-section of each blade is a trailing edge, a straight line which connects the leading edge and the trailing edge with each other is a chord line, a thickness center line between the leading edge and the trailing edge is a mean line, and an inclination angle of the chord line with respect to a parallel line which is drawn from the leading edge is a blade angle, a blade angle at a root of the blade which is adjacent to the hub is about 24&deg;-34&deg;, a blade angle at a tip of the blade which is adjacent to a duct of the micro fan is about 18&deg;-28&deg;, and a span twist angle which is represented by a difference between the blade angles at the root and the tip is 2&deg;-12&deg; of helical twist.

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Suwon, South Korea

Woang Sik Park