Patent ID: 6472781
Filing Date: 2002-10-29
Classification: F04D

Abstract:
A fan motor to be mounted to an inside of a casing of a thin electronic appliance such as a personal computer, comprising:a fan for inhaling and exhausting air in a manner that an inhaling direction of air is perpendicular to an exhausting direction thereof; a drive unit for driving said fan; an outer housing member for accommodating said fan and drive unit, at least a part of said outer housing member being made from a material with good heat conductance, formed with a heat transferring portion thermally conductively connected to a heat source of the thin electronic appliance, said outer housing member having a first face and a second face which are opposite to said drive unit; and an intake hole provided in each face of said outer housing member, defining a first intake hole in the first face and a second intake hole in the second face, each said intake hole having a diameter for inhaling air in the vicinity of said first face and said second face; wherein said fan includes a rotor and a plurality of fan blades formed on an outer peripheral side surface of the rotor, said rotor having a diameter defined by the outer peripheral side surface thereof, and wherein said first and second intake holes supply air to said fan from respective opposite sides thereof, and have larger diameters than that of said rotor, while at least one of said first and second intake holes are formed to define a certain portion in which the air is drawn in from one side of said fan only. 2.The fan motor according to claim 1, wherein a radiator is provided in an exhaust direction of said fan.