Airflow guiding structure for a heat-dissipating fan

Details Airflow guiding structure for a heat-dissipating fan Airflow guiding structure for a heat-dissipating fan

2005-05-31

2005-05-31

Verdier, Christopher (Department: 3745)

Rotary kinetic fluid motors or pumps

Working fluid passage or distributing means associated with...

Vane or deflector

C415S119000, C415S211200, C415S220000

Reexamination Certificate

active

06899521

ABSTRACT:
A heat-dissipating fan includes a casing having an air outlet, a base mounted in the air outlet, and a plurality of ribs each mounted between the base and the casing. An impeller is mounted on the base and includes a plurality of blades. Each rib includes in sequence at least a first radial guiding portion, a first circumferential guiding portion, and a second radial guiding portion. Each of the first radial guiding portion and the second radial guiding portion extends in a direction having an inclining angle with an axial direction of the air outlet. The first radial guiding portion, the first circumferential guiding portion, and the second radial guiding portion guide airflow passing through the air outlet and increase wind pressure of the airflow when the impeller is turning.

REFERENCES:
patent: 2021086 (1935-11-01), Oskamp
patent: 6398492 (2002-06-01), Cho et al.
patent: 6561762 (2003-05-01), Horng et al.
patent: 6695045 (2004-02-01), Chang
patent: 232110 (1961-01-01), None
patent: 62-243993 (1987-10-01), None

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