Automotive fan structure

Details Automotive fan structure Automotive fan structure

1995-05-31

1996-12-10

Look, Edward K.

Fluid reaction surfaces (i.e., impellers)

Rotor having flow confining or deflecting web, shroud or...

Axially extending shroud ring or casing

416169R, 248604, F04D 2932

Patent

active

055825079

ABSTRACT:
The axial flow fan structure has an outer ring and an inner ring that establish an annular air passage. An odd-number of arms join the inner and outer rings together and at least one of the arms is skewed with respect to a radius of the annular air passage in order to reduce noise and vibration and to increase fan efficiency. Labyrinth air passages are provided between the fan and the outer ring to impede air blow-past and to improve further efficiency and noise reduction. Internal vanes are also provided to cool the fan-driving motor in which each of the vane members have at least two edges, the respective edges forming different angles relative to the axis of fan rotation.

REFERENCES:
patent: 2557223 (1951-06-01), Hans
patent: 3145910 (1964-08-01), Jolly
patent: 4210835 (1980-07-01), Neveux
patent: 4685513 (1987-08-01), Longhouse
patent: 5035398 (1991-07-01), Chiang
patent: 5180279 (1993-01-01), McLane-Goetz et al.
patent: 5183382 (1993-02-01), Carroll
patent: 5244347 (1993-09-01), Gallivan et al.
patent: 5326228 (1994-07-01), Gallivan et al.

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