Fan impeller assembly

Details Fan impeller assembly Fan impeller assembly

1995-07-27

1996-09-10

Look, Edward K.

Fluid reaction surfaces (i.e., impellers)

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

Radially extending web or end plate

416241A, F04D 2928

Patent

active

055540040

ABSTRACT:
A molded impeller fan assembly has a backing plate and a plurality of blades extending generally orthogonally upwardly therefrom. A V-shaped buttress is formed at the transition of each blade to the backing plate. Each buttress is defined by a pair of opposed walls which are formed where the backing plate curves gradually upward toward the blade apex. A V-shaped indentation is disposed between the walls in a side of the backing plate opposite the blades. The walls of the buttress serve to transfer centrifugal and impact forces from the blades to the backing plate.

REFERENCES:
patent: 3095822 (1963-07-01), Kiefer
patent: 3521973 (1970-07-01), Schouw

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