Method of making axial fan impeller

Details Method of making axial fan impeller Method of making axial fan impeller

1984-07-02

1986-09-09

Garrett, Robert E.

Fluid reaction surfaces (i.e., impellers)

Specific blade structure

Integrally shaped or blended into hub

416227A, 416195, 416DIG3, 291568B, 291568CF, F03D 1102

Patent

active

046106014

ABSTRACT:
The axial fan produced by the novel method may have a cylindrical shroud, an impeller mounted coaxially within the shroud, and a bell-shaped deflector extending across the exhaust to redirect the airflow toward radially outward directions. A malleable blank may be cut and shaped to form the impeller having at least three blades, the peripheries of which define a cylinder coaxial with the shroud. The impeller should have a depth-to-radius ratio exceeding 0.5.

REFERENCES:
patent: 787745 (1905-04-01), Freid
patent: 1321378 (1919-11-01), Kohn
patent: 1734541 (1929-11-01), Tedman
patent: 2064845 (1936-12-01), Moray et al.
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patent: 2731193 (1956-01-01), Lall et al.
patent: 3189982 (1965-06-01), Merz
patent: 3201857 (1965-08-01), Klonoski
patent: 3951611 (1976-04-01), Morrill
patent: 4162053 (1979-07-01), Bjornson
patent: 4379813 (1983-04-01), Newman

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