Resonant Type Piezoelectric Pump Driven at the Power Frequency Using a Tuning Fork Vibrator

Abstract

A resonant type piezoelectric pump driven by a tuning fork vibrator (TFV) is developed in this study. The resonant frequency of the TFV is designed to be the power frequency, thus the pump can directly work in a resonant state under a power frequency power supply. Three factors affecting the performance of the piezoelectric pump are investigated in this paper, including the thickness of the TFV, the material of the pump chamber diaphragm and the quantity of inlet valve. The Taguchi method is adopted to obtain the best combination among the three factors. In accordance with the optimized results of the Taguchi method, a final prototype piezoelectric pump is fabricated via 3D printing technology. When driven by the power frequency power supply, the maximum flow rate of the prototype piezoelectric pump can reach 441.77 ml/min.

Experiment to Determine the Relationship Between Temperature and Tuning Fork Frequency

“…Physically the tuning fork consists of two arms (tines) and a handle forming the letter U and is made of various materials [1], [5]. Tuning forks can resonate with different frequencies that can be adjusted by placing an object on one of the tines [1], [5]- [7]. Changes in temperature on the tuning fork affect the frequency produced [1], [2].…”

Development of a dual-mode electro-hydrostatic actuator with serial-parallel hybrid configured piezoelectric pumps

“…The experimental results show that the diaphragm system reaches resonance under the driving frequency of 265 Hz, the diaphragm's amplitude is double amplified and the maximum gas flow rate is achieved as 186.8 ml min −1 . A resonant type piezoelectric pump driven by a tuning fork vibrator is developed by Pan et al [29], and the resonant frequency of which is designed to be the power frequency, the maximum flow rate of which at the resonant frequency can reach 441.77 ml min −1 . In order to improve the output pressure of the piezoelectric pump, a resonant piezoelectric pump using a displacement-amplifying vibrator is proposed by Pan et al [30] in another study.…”

“…Therefore, there is always a trade-off between large flow and large carrying capacity in the single-mode structure, i.e. either in the multi-pump serial structure alone or in [27] single pump in resonant PM film 230 Hz N/A 1.68 l min −1 Air Wang et al [28] single pump in resonant PM film 265 Hz 56.7 kPa 0.19 l min −1 Air Dong et al [33] triple pump in series PM film 220 Hz 4.08 kPa 1.5 l min −1 Air Wang et al [34] dual pump in parallel MM stack 150 Hz 0.6 MPa 2.6 l min −1 Oil Pan et al [29] single pump in resonant PM film 50 Hz N/A 0.44 l min −1 Water Pan et al [30] single pump in resonant PM stack 395 Hz 4.73 MPa 65.7 ml min −1 Air Zhu et al [35] dual pump in parallel MM stack 180 Hz 0.6 MPa 2.7 l min −1 Oil the multi-pump parallel structure alone. The properties of the smart material-based pumps mentioned above are summarized in table 1.…”