Patent ID: 6348748
Filing Date: 2002-02-19
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 different diameters which are larger than that of said rotor.