Centrifugal fan

Details Centrifugal fan Centrifugal fan

2011-03-08

2011-03-08

Hoffberg, Robert J (Department: 2835)

Electricity: electrical systems and devices

Housing or mounting assemblies with diverse electrical...

For electronic systems and devices

C361S704000, C361S719000, C415S175000, C415S176000, C415S178000, C415S203000, C417S366000, C417S428000

Reexamination Certificate

active

07903406

ABSTRACT:
A centrifugal fan includes a cylindrical housing for housing an impeller, a motor for driving the impeller and a disk-like circuit board that are arranged coaxially in an accumulated manner. When the impeller rotates, air is taken in along the axial direction of the housing and goes out through an air outlet disposed in the circumference surface of the housing. A ring-like air inlet is disposed in a wall face on one side of the housing in the axial direction. An outer rim of the circuit board that is disposed inside the wall face is substantially within the inside edge of the air inlet, and a self-heating electronic component is mounted on the circuit board at the outer edge portion. A part of air taken in from the air inlet flows at a vicinity of the electronic component so that the electronic component is cooled.

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