Low-profile axial-flow single-blade piezoelectric fan

Details Low-profile axial-flow single-blade piezoelectric fan Low-profile axial-flow single-blade piezoelectric fan

1997-05-30

1999-01-19

Budd, Mark O.

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

310331, 310332, 4174132, H01L 4108

Patent

active

058617035

ABSTRACT:
A low-profile, axial-flow, single-blade piezoelectric fan is provided. The fan is in the form of a piezoelectric fan assembly (300) which contains a housing (302) defining an axial flow-through internal cavity. Inside the housing (302) is a single fan blade (314) which is attached at only one end to the housing (302). A piezoelectric element (318) is fixedly mounted to the single fan blade (314) and causes the single fan blade (314) to deflect when the piezoelectric element (318) is activated. This piezoelectric fan assembly (300) may be used to cool electronic components in applications where low-power and low-volume fanning is desired.

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"Theory of Air Flow Generation by a Resonant Type PVF.sub.2 Bimorph Cantilever Vibrator,"M. Toda, Ferroelectrics, 1979, vol. 22, pp. 911-918, RCA Research Laboratories, Inc., Japan.

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