Design of a Piezoelectric Pump Driven by Inertial Force of Vibrator Supported by a Slotted Beam

Machines

Shanlin Liu¹  Qiaosheng Pan¹  Xiaoliang Wang¹  Yong Zhang¹ 

[1] Anhui Province Key Laboratory of Measuring Theory and Precision Instrument, School of Instrument Science and Optoelectronics Engineering, Hefei University of Technology, Hefei 230009, China;

关键词: piezoelectric pump;    slotted beam;    inertial force;    displacement amplifier;    resonance drive;   

DOI  :  10.3390/machines10060460

来源: DOAJ

【 摘 要 】

This paper introduces the design, manufacture, dynamic analysis, and experimental results of a piezoelectric pump driven by the inertial force of a vibrator supported by a slotted beam. The piezoelectric vibrator is composed of a mass block, displacement amplifier, and slotted beam fixed with both ends. In the resonant mode, the displacement amplifier drives the slotted beam to work, and produces amplitude and inertial force. In this paper, the design of the slotted beam optimizes the output of the displacement amplifier. In addition, the slotted beam supports the displacement amplifier and increases the elastic output. The pump body adopts polydimethylsiloxane (PDMS) check valves and compressible spaces to improve the output performance. This research studies the influence of stiffness and mass on the output performance by qualitatively analyzing the inertial output force of the vibrator. Nine kinds of slotted beams with different stiffnesses and different mass blocks are designed for comparison. Thereafter, an optimal structure of the piezoelectric pump is selected. The experimental results show that under a driving voltage of 700 ${\mathrm{V}}_{\mathrm{pp}}$ , the maximum flowrate is 441 mL${ \min }^{-1}$ and the maximum back pressure is 25.3 kPa.

【 授权许可】

Unknown