Fabrication and experiment of piezoelectric pump imitating peristalsis

This study proposes a piezoelectric pump without a check valve to simulate the peristaltic motion of the stomach as a traveling wave. The traveling wave is formed by the vibration of the piezoelectric element and affected by interval, phase, etc. Therefore, the design parameters are determined using these conditions, and a multiphysical analysis through COMSOL Multiphysics is conducted to verify the feasibility. The pump is modeled according to the traveling wave applying method according to the phase. The flow rates are compared according to each model. The optimum conditions are selected and applied to the modeling of the experiment. Fluid analysis is then conducted. The experimental model is fabricated based on the analysis result. A pump with 16-ceramic connections is used in the experiment. A casing is made with a three-dimensional printer for the same situation as the boundary conditions. The experiments are performed for 20 min, and the possibility of this pump is verified through one- and two-way flow experiments.

[1]  Yong Liu,et al.  An improved resonantly driven piezoelectric gas pump , 2013, Journal of Mechanical Science and Technology.

[2]  J. Lima,et al.  Piezoelectric pumping in flow analysis: Application to the spectrophotometric determination of gabapentin. , 2007, Analytica chimica acta.

[3]  Rathnamala Rao,et al.  Design and simulation of high pressure piezohydraulic pump with active valves , 2016, 2016 International Conference on Electrical, Electronics, and Optimization Techniques (ICEEOT).

[4]  Seung-Hyun Lee,et al.  Thermal performance criterion for nanofluids in laminar flow regime , 2017 .

[5]  Cheng Guangming.  Preliminary Research of Piezo-pump Using Ball Check Valves , 2005 .

[6]  Dong Jin Kang.  Effects of channel curvature on the performance of viscous micro-pumps , 2014 .

[7]  T. Teng,et al.  Performance evaluation on vacuum pumps using nanolubricants , 2016 .

[8]  B. Y. Majlis,et al.  MEMS-based piezoelectric micropump for precise liquid handling , 2012, 2012 International Conference on System Engineering and Technology (ICSET).

[9]  Xiuhua He,et al.  A bidirectional valveless piezoelectric micropump with three chambers applying synthetic jet , 2016 .

[10]  V. K. Gupta,et al.  Modeling and flow analysis of piezoelectric based micropump with various shapes of microneedle , 2017 .

[11]  Jinwook Lee,et al.  Effects of different piezo-acting mechanism on two-stage fuel injection and CI combustion in a CRDi engine , 2016 .

[12]  S. Ueha,et al.  Ultrasonic motors : theory and applications , 1993 .

[13]  F. M. White,et al.  Fluid Mechanics (7th edition in SI Units) , 2011 .

[14]  Nam Seo Goo,et al.  Development of a Peristaltic Micropump for Bio-Medical Applications Based on Mini LIPCA , 2008, ArXiv.

[15]  Wu Bo-da.  A Study on Testing for Micro Piezo-pump with Integral Valve , 2006 .

[16]  J. Huber,et al.  Fabrication of normally-closed bidirectional micropumps in silicon–polymer technology featuring photopatternable silicone valve lips , 2011 .