Fluid moving device and associated method

Details Fluid moving device and associated method Fluid moving device and associated method

1998-03-31

2000-01-18

Look, Edward K.

Fluid reaction surfaces (i.e., impellers)

Articulated, resiliently mounted or self-shifting impeller...

Sectional, staged or nonrigid working member

416132R, 416 1, 416 39, 416240, 416228, 415 1, 415 12, 415 47, 415141, B63H 126

Patent

active

06015263&

ABSTRACT:
A fluid moving device (100) includes a rotatable assembly (101), and a plurality of fan blades (102-04) disposed circumferentially around and extending outward from rotatable assembly (101), at least one of plurality of fan blades (102-04) includes shape memory alloy. The fan blade which includes shape memory alloy transforms into a predetermined shape memory state when the fan blade experiences a predetermined temperature which may be as a result of a predetermined temperature of surrounding fluid passing over fan blades (102-04) when rotation of rotatable assembly (101) is at a given speed. The shape memory state increases or decreases volume flow of surrounding fluid when rotatable assembly (101) is rotating at substantially a constant speed. The speed is substantially constant which limits noise generated from fluid moving (100) device while volume flow rate of the fluid moving device is being changed.

REFERENCES:
patent: 3558369 (1971-01-01), Wang et al.
patent: 3764227 (1973-10-01), Albertzart
patent: 5389888 (1995-02-01), Urano et al.
Shape Memory Alloys, by Hodgson, et al, obtained by accessing: www.sma-inc.com, on Mar. 31, 1998.

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