Centrifugal fan with improved air cooling for its motor, especia

Details Centrifugal fan with improved air cooling for its motor, especia Centrifugal fan with improved air cooling for its motor, especia

1998-07-29

2000-03-07

Ramirez, Nestor

Electrical generator or motor structure

Dynamoelectric

Rotary

310 58, 417369, 415203, H02K 714, H02K 908, F04D 1704

Patent

active

060344512

ABSTRACT:
A centrifugal fan for a motor vehicle has a fan rotor driven in rotation by an electric motor and lodged in a central part of a casing. The outer walls of the casing define, in conjunction with a peripheral portion of the rotor, a volute for channeling air which is delivered by the rotor in a tangential direction. The outer wall of the casing includes a longitudinal side wall portion formed with through apertures constituting diversion ports, for taking off some of the air delivered by the rotor and diverting this air through an external duct fixed to the casing and open into the central region of the latter, so as to cool the motor.

REFERENCES:
patent: 5743721 (1998-04-01), Graham et al.
patent: 5744213 (1998-04-01), Nelson
Patent Abstracts of Japan, vol. 010, No. 257, Sep. 3, 1986 and JP 61 085214 A (Nissan Motor Co. Ltd; Others: 01), Apr. 30, 1986.
French Search report dated Apr. 30, 1998.

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