Axial flow fan

Details Axial flow fan Axial flow fan

1985-04-02

1986-01-14

Yeung, James C.

Rotary kinetic fluid motors or pumps

Working fluid passage or distributing means associated with...

Casing with mounting means

417354, F04D 2508, F04D 2944

Patent

active

045643350

ABSTRACT:
An axial-flow fan comprising a fan wheel surrounded by a casing, the casing having a cylindrical flow passage in its axial central portion which is broadened at least toward the exhaust side by way of corner pockets into a regular multi-corner profile circumscribing the diameter of the fan wheel. The hub of the fan wheel is provided on the inlet side with an annular surface that reduces the outer diameter of the hub in the form of a conical configuration that faces the incoming air and which extends at least over one-third of the entire axial length of the hub.

REFERENCES:
patent: 3128939 (1964-04-01), Szydlowski
patent: 3229897 (1966-01-01), Papst
patent: 3334807 (1967-08-01), McMahan
patent: 3362627 (1968-01-01), Papst
patent: 3367423 (1968-02-01), Van Ranst
patent: 3378192 (1968-04-01), Friese
patent: 3531221 (1970-09-01), Herberg
patent: 4061188 (1977-12-01), Beck
patent: 4128364 (1978-12-01), Papst et al.
patent: 4166310 (1979-09-01), Rothe et al.
patent: 4167376 (1979-09-01), Papst
patent: 4225285 (1980-09-01), Sturm

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