Mechanism of piezoelectric micropump with four flexible valves

4th International Conference on Advanced Composite Materials and Manufacturing Engineering 2017

材料科学;化学

Wei, Changzhi^1,2 ; Wei, Shoushui^3 ; Ren, Xiaofei^3

School of Information Science and Engineering, University of Jinan, Jinan

250029, China^1

Shandong Provincial Key Laboratory of Network Based Intelligent Computing, Jinan

250029, China^2

School of Control Science and Engineering, Shandong University, Jinan

250061, China^3

关键词: Biological samples;    Input and outputs;    Liquid transport;    Micro pump;    Operating frequency;    Piezoelectric micropumps;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/207/1/012041/pdf
DOI  :  10.1088/1757-899X/207/1/012041

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

A piezoelectric micropump with four flexible valves is proposed and its mechanism is researched. In the micropump chamber four asymmetric flexible valves are used to achieve single direction flow. The instantaneous velocities are analyzed and the peak input and output velocities are 0.14 m/s and 0.2 m/s respectively. The net flow rate is calculated, which is about 2.5×10-11m3/s. Due to the low operating frequency, flexible valves structure, no heat and no restriction on transport fluid type, this kind of micropump can be used for liquid transport and other biological sample containing DNA.