Journal ArticleDOI
A piezoelectric fan using pzt ceramics
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TLDR
In this paper, a fan consisting of a piezoelectric bimorph tipped with an additional flexible blade is introduced, which can supply sufficient and constant air flow without any structural destruction for a long time.Abstract:
A fan consisting of a piezoelectric bimorph tipped with an additional flexible blade is introduced. Since the flexible blade resonates in a large amplitude but the bimorph vibrates in a very small amplitude, the fan can supply sufficient and constant air flow without any structural destruction for a long time. The fan case has two air outlets which are directed oppositely each other. The fan with such outlets can supply an air flow of 4 m3/hr at an applied voltage of 140 Vp–p. Another type of a piezoelectric fan using multi-layered PZT ceramic elements produced by a thick film printing technique is introduced. This fan is suitable for low voltage operation and it can supply an air flow of 1 m3/hr at an applied voltage of 17Vp–p.read more
Citations
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Journal ArticleDOI
Heat transfer by a piezoelectric fan on a flat surface subject to the influence of horizontal/vertical arrangement
TL;DR: In this paper, a total of six piezoelectric fans with various blade geometries are made and tested, and the influence of geometric parameters, including the horizontal/vertical arrangement, and location of the piezofan, on the performance of the fans is examined.
Journal ArticleDOI
On the Flow Around Flexible Plates, Oscillating with Large Amplitude
A. Ihara,H. Watanabe +1 more
TL;DR: In this paper, the effects of the distances between two plates on the flow structure were investigated for oscillations in-phase and in counter-phase, and it was shown that the normal flow in the downstream direction was greatly affected by the distance between the two plates, but that such flow was scarcely affected for inphase oscillation.
Journal ArticleDOI
Analysis on a composite cantilever beam coupling a piezoelectric bimorph to an elastic blade
Kui Yao,Kenji Uchino +1 more
TL;DR: In this paper, a lumped-mass model was used to describe the deflection of a composite piezoelectric cantilever beam, coupled with a bimorph to an elastic plate.
Journal ArticleDOI
Numerical investigation of convective heat transfer on a vertical surface due to resonating cantilever beam
TL;DR: In this paper, a simplified vibrating cantilever beam model is made to simulate the piezoelectric fan and the flow and heat transfer performances induced by the vibrating beam operating at different flexural modes and opening inlets are studied by numerical simulation.