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Proceedings Paper

New configurations of oscillatory flow pumps using bimorph piezoelectric actuators
Author(s): Sandro L. Vatanabe; Rogério F. Pires; Paulo H. Nakasone; Emílio C. N. Silva
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Paper Abstract

Precision flow pumps have been widely studied over the last three decades. They have been applied in the areas of Biology, Pharmacy and Medicine in applications usually related to the dosage of medicine and chemical reagents. In addition, thermal management solutions for electronic devices have also been recently developed using these kinds of pumps offering better performance with low noise and low power consumption. In previous works was presented the working principle of a pump based on the use of a bimorph piezoelectric actuator inserted in a fluid channel to generate flow. This work presents a novel configuration of piezoelectric flow pumps using a bimorph piezoelectric actuator of different aspect ratio. Sensibility studies of the rectangular cross-sectional area channel are conducted computationally (CFD) and three parameters are investigated: resonance frequency and oscillation amplitude of the piezoelectric actuator, and pressure inside the channel. Also, experimental tests are conducted to verify the influence of clamps' rigidity and actuator's insulator. The experimental results show that improving these two aspects it is possible to achieve higher flow rates.

Paper Details

Date Published: 22 April 2008
PDF: 11 pages
Proc. SPIE 6930, Industrial and Commercial Applications of Smart Structures Technologies 2008, 69300U (22 April 2008); doi: 10.1117/12.776797
Show Author Affiliations
Sandro L. Vatanabe, Escola Politécnica da Univ. de São Paulo (Brazil)
Rogério F. Pires, Inoveo Indústria, Comérico e Serviços de Automação de Sistemas Ltda. (Brazil)
Paulo H. Nakasone, Escola Politécnica da Univ. de São Paulo (Brazil)
Emílio C. N. Silva, Escola Politécnica da Univ. de São Paulo (Brazil)

Published in SPIE Proceedings Vol. 6930:
Industrial and Commercial Applications of Smart Structures Technologies 2008
L. Porter Davis; Benjamin Kyle Henderson; M. Brett McMickell, Editor(s)

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