Fan frame structure

Details Fan frame structure Fan frame structure

2006-11-30

2009-10-20

Look, Edward (Department: 3745)

Rotary kinetic fluid motors or pumps

Working fluid passage or distributing means associated with...

Casing having multiple parts releasably clamped

C415S220000

Reexamination Certificate

active

07604459

ABSTRACT:
The present invention relates to a fan frame structure, which is composed of a plastic seat and a metal circular casing. At least two opposing guard fences disposed in a radial manner and extended upwards from a top edge of said seat. A fitting rim for inserting the metal circular casing is provided between an inner surface of the guard fence and a top surface of the seat. A side column is extended from a top side of the guard fence to cover and support the metal circular casing. Accordingly, the use of costly metal material can be reduced to lower the production cost, and the decrease of strength and deformation of the fan frame structure due to high temperature can be prevented. Meanwhile, the frame wall thickness can be reduced to enlarge the fan blade, thereby increasing air flow, fan speed and heat dissipation performance of a cooling fan.

REFERENCES:
patent: 2007/0231142 (2007-10-01), Liu et al.

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