Back-skewed fan

Details Back-skewed fan Back-skewed fan

1983-11-08

1986-02-11

Powell, Jr., Everette A.

Fluid reaction surfaces (i.e., impellers)

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

Axially extending shroud ring or casing

416DIG2, 416238, F04D 2938

Patent

active

045696322

ABSTRACT:
A compact, efficient axial flow fan with blades that are rearwardly (i.e., away from the direction of fan rotation) skewed and which are oriented at a pitch ratio which continuously decreases as a function of increasing blade radius along the radially outermost 30% of the blade.

REFERENCES:
patent: 2061 (1865-08-01), Tripp
patent: 296271 (1884-04-01), Pistoja
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patent: 1593516 (1926-07-01), Sutter
patent: 1991095 (1935-02-01), Hochstetter
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patent: 2709035 (1955-05-01), Schmidt
patent: 2903076 (1959-09-01), Johannesen
patent: 3367423 (1968-02-01), Van Ranst
patent: 3826591 (1974-07-01), Wilson
patent: 4329946 (1982-05-01), Longhouse
patent: 4358245 (1982-11-01), Gray
patent: 4396351 (1983-08-01), Hayashi et al.
patent: 4459087 (1984-07-01), Barge
patent: 4505641 (1985-03-01), Tsuchikawa et al.

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