Computational and experimental characterization of a low-cost piezoelectric valveless diaphragm pump

Autor(es)

Choi, Andres ^[1] ; Vatanabe, Sandro L. ^[1] ; de Lima, Cicero R. ^[2] ; Silva, Emilio C. N. ^[1]

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo, Dept Mechatron & Mech Syst Engn, Sao Paulo - Brazil

^[2] Univ Fed Abc, Sch Engn Modeling & Appl Sci, BR-09210580 Santo Andre - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Journal of Intelligent Material Systems and Structures; v. 23, n. 1, p. 53-63, JAN 2012.
• Citações Web of Science: 3

Resumo

Flow pumps act as important devices in areas such as Bioengineering, Medicine, and Pharmacy, among other areas of Engineering, mainly for delivering liquids or gases at small-scale and precision flow rate quantities. Principles for pumping fluids based on piezoelectric actuators have been widely studied, since they allow the construction of pump systems for displacement of small fluid volumes with low power consumption. This work studies valveless piezoelectric diaphragm pumps for flow generation, which uses a piezoelectric ceramic (PZT) as actuator to move a membrane (diaphragm) up and down as a piston. The direction of the flow is guaranteed by valveless configuration based on a nozzle-diffuser system that privileges the flow in just one pumping direction. Most research efforts on development of valveless flow pump deal either with computational simulations based on simplified models or with simplified physical approaches based on analytical models. The main objective of this work is the study of a methodology to develop a low-cost valveless piezoelectric diaphragm flow pump using computational simulations, parametric study, prototype manufacturing, and experimental characterization. The parametric study has shown that the eccentricity of PZT layer and metal layer plays a key role in the performance of the pump. (AU)

• Processo FAPESP: 11/02387-4 - Dispositivos piezocompósitos inovadores para nanoposicionamento e coleta de energia
• Beneficiário: Emílio Carlos Nelli Silva
• Modalidade de apoio: Auxílio à Pesquisa - Regular
• Processo FAPESP: 04/14675-0 - Estudo de viabilidade técnica de uma bomba de fluxo piezelétrica
• Beneficiário: Rogério Felipe Pires
• Modalidade de apoio: Auxílio à Pesquisa - Pesquisa Inovativa em Pequenas Empresas - PIPE