High efficiency, low axial profile, low noise, axial flow fan

Details High efficiency, low axial profile, low noise, axial flow fan High efficiency, low axial profile, low noise, axial flow fan

1993-07-12

1994-07-05

Kwon, John T.

Fluid reaction surfaces (i.e., impellers)

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

416169A, 416189, 416DIG2, F04D 2938

Patent

active

053262255

ABSTRACT:
The fan blades have a particular geometry that combines high efficiency, low axial profile, and low noise in an axial flow fan. The fan also comprises a circular outer band that coacts with a surrounding shroud structure to form a labyrinth air seal. The shroud structure comprises two parts that cooperatively define a radially inwardly open groove within which a flange of the fan band is received to form the labyrinth seal.

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patent: 5183382 (1993-02-01), Carroll

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