Parametric analysis of the output performance of a valveless piezoelectric pump with a bullhorn-shaped structure

2021 ◽  
Vol 92 (7) ◽  
pp. 075005
Author(s):  
Lipeng He ◽  
Dianbin Hu ◽  
Jingran Wang ◽  
Zheng Zhang ◽  
Ziming Zhou ◽  
...  
Keyword(s):  
Parametric Analysis ◽  
Piezoelectric Pump ◽  
Output Performance ◽  
Valveless Piezoelectric Pump

Valveless Piezoelectric Pump with Reverse Diversion Channel

Electronics ◽  
2021 ◽  
Vol 10 (14) ◽  
pp. 1712
Author(s):  
Yongming Yao ◽  
Zhicong Zhou ◽  
Huiying Liu ◽  
Tianyu Li ◽  
Xiaobin Gao
Keyword(s):  
Reverse Flow ◽  
Structural Parameters ◽  
Maximum Flow ◽  
Simulation Software ◽  
Return Flow ◽  
Piezoelectric Pump ◽  
Output Performance ◽  
Diversion Channel ◽  
Tesla Valve ◽  
Valveless Piezoelectric Pump

In order to reduce backflow and improve output performance, a valveless piezoelectric pump with a reverse diversion channel was produced. The channel was designed based on the structure of the Tesla valve, which has no moving parts and can produce a high-pressure drop during reverse flow. Therefore, this special flowing channel can reduce the backflow of a valveless piezoelectric pump, which has the characteristic of one-way conduction. This work first revealed the relationship between the main structural parameters of the Tesla valve and the kinetic energy difference of liquid. Then, by using simulation software, the structure was verified to have the characteristics of effective suppression of the backflow of valveless piezoelectric pumps. Through setting multiple simulations, some important parameters that include the optimal height between the straight channels (H), the optimal angle (α) between the straight channel and the inclined channel, as well as the optimal radius (R) of the channel were confirmed. Finally, a series of prototypes were fabricated to test the output performance of this valveless piezoelectric pump. Comparing the experimental results, the optimal parameters of the Tesla valve were determined. The results suggest that when the parameters of the Tesla valve were H = 8 mm, α = 30°, and R = 3.4 mm, the output performance of this piezoelectric pump became best, which had a maximum flow rate of 79.26 mL/min with a piezoelectric actuator diameter of 35 mm, an applied voltage of 350 Vp-p, and a frequency of 28 Hz. The effect of this structure in reducing the return flow can be applied to fields such as agricultural irrigation.

scholarly journals Advances in Valveless Piezoelectric Pumps

2021 ◽  
Vol 11 (15) ◽  
pp. 7061
Author(s):  
Qiufeng Yan ◽  
Yongkang Yin ◽  
Wanting Sun ◽  
Jun Fu
Keyword(s):  
Structure Design ◽  
Future Research ◽  
Liquid Cooling ◽  
Piezoelectric Pump ◽  
Pump Design ◽  
Output Pressure ◽  
Output Performance ◽  
Development Tendency ◽  
Important Branch ◽  
Valveless Piezoelectric Pump

Piezoelectric pump design is regarded as a hot research topic in the microfluidic field, and has been applied in liquid cooling, precision machinery and other relevant domains. The valveless piezoelectric pump becomes an important branch of the piezoelectric pump, because it successfully avoids the problem of “pump-lagging of valve” during the valve piezoelectric pump processing. This paper summarizes the development of valveless piezoelectric pumps, and introduces some different configurations of valveless piezoelectric pumps. The structure and material of all kinds of valveless piezoelectric pumps are elaborated in detail, and also the output performance of the pump is evaluated and analyzed with the variations in flow rate and output pressure as reference. By comparing the flow of different types of valveless piezoelectric pumps, the application of valveless piezoelectric pumps is also illustrated. The development tendency of the valveless piezoelectric pump is prospected from the perspective of structure design and machining methods, which is expected to provide novel ideas and guidance for future research.

scholarly journals Improving Output Performance of a Resonant Piezoelectric Pump by Adding Proof Masses to a U-Shaped Piezoelectric Resonator

Micromachines ◽  
2021 ◽  
Vol 12 (5) ◽  
pp. 500
Author(s):  
Jian Chen ◽  
Wenzhi Gao ◽  
Changhai Liu ◽  
Liangguo He ◽  
Yishan Zeng
Keyword(s):  
Flow Rate ◽  
Maximum Flow ◽  
Working Fluid ◽  
Driving Voltage ◽  
Piezoelectric Resonator ◽  
Piezoelectric Pump ◽  
Compact Structure ◽  
Output Performance ◽  
Volume Efficiency ◽  
Working Efficiency

This study proposes the improvement of the output performance of a resonant piezoelectric pump by adding proof masses to the free ends of the prongs of a U-shaped piezoelectric resonator. Simulation analyses show that the out-of-phase resonant frequency of the developed resonator can be tuned more efficiently within a more compact structure to the optimal operating frequency of the check valves by adjusting the thickness of the proof masses, which ensures that both the resonator and the check valves can operate at the best condition in a piezoelectric pump. A separable prototype piezoelectric pump composed of the proposed resonator and two diaphragm pumps was designed and fabricated with outline dimensions of 30 mm × 37 mm × 54 mm. Experimental results demonstrate remarkable improvements in the output performance and working efficiency of the piezoelectric pump. With the working fluid of liquid water and under a sinusoidal driving voltage of 298.5 Vpp, the miniature pump can achieve the maximum flow rate of 2258.9 mL/min with the highest volume efficiency of 77.1% and power consumption of 2.12 W under zero backpressure at 311/312 Hz, and the highest backpressure of 157.3 kPa under zero flow rate at 383 Hz.

The characters exploration of a piezoelectric pump with fishtail-shaped bluffbody

2021 ◽  
pp. 1045389X2110386
Author(s):  
Yi Hou ◽  
Lipeng He ◽  
Zheng Zhang ◽  
Baojun Yu ◽  
Hong Jiang ◽  
...  
Keyword(s):  
Flow Rate ◽  
Preliminary Investigation ◽  
Maximum Flow ◽  
Theoretical Explanation ◽  
Maximum Flow Rate ◽  
Bluff Bodies ◽  
Conical Flow ◽  
Piezoelectric Pump ◽  
Valveless Piezoelectric Pump ◽  
Shape And Size

This paper focuses on a new structure in the valveless piezoelectric pump, which has a combination structure of the conical flow channel and two fishtail-shaped bluffbodies in the chamber of the pump. The fishtail-shaped bluffbody is inspired by the shape of the swimming fish to diminish the backflow and optimize the performance of the pump. The performance is studied by changing the shape and size of the inlet and outlet, the bluff bodies’ height and the space between two bluff bodies. The results show that the 3 mm × 3 mm square inlet, 3 mm diameter round outlet, 3 mm height of bluffbodies, 6.8 mm pitch of bluffbodies has a best performance in all 10 prototypes, which implements a maximum flow rate of 87.5 ml/min at 170 V 40 Hz with a noise of 42.6 dB. This study makes a preliminary investigation and theoretical explanation for the subsequent optimization of this structure, improved the performance of the valveless piezoelectric pump, broaden the thinking of the design for the bluffbody for better performance of the valveless piezoelectric pump.

Design and experiment of valveless piezoelectric pump with triangular prism bluff body

2016 ◽  
Vol 24 (2) ◽  
pp. 327-334
Author(s):  
张蕊华 ZHANG Rui-hua ◽  
张建辉 ZHANG Jian-hui ◽  
朱银法 ZHU Yin-fa ◽  
胡笑奇 HU Xiao-qi
Keyword(s):  
Bluff Body ◽  
Triangular Prism ◽  
Piezoelectric Pump ◽  
Valveless Piezoelectric Pump

Structural-fluid coupling simulation and experimental verification on valveless piezoelectric pump

2016 ◽  
Vol 24 (1) ◽  
pp. 112-118
Author(s):  
曾 平 ZENG Ping ◽  
李立安 LI Li-an ◽  
胥 锋 XU Feng ◽  
刘国君 LIU Guo-jun ◽  
温建明 WEN Jian-ming
Keyword(s):  
Experimental Verification ◽  
Piezoelectric Pump ◽  
Fluid Coupling ◽  
Valveless Piezoelectric Pump

Research on double-outlet valveless piezoelectric pump with fluid guiding body

2020 ◽  
Vol 302 ◽  
pp. 111785 ◽  
Author(s):  
Bangcheng Zhang ◽  
Yong Huang ◽  
Lipeng He ◽  
Quanwen Xu ◽  
Guangming Cheng
Keyword(s):  
Piezoelectric Pump ◽  
Valveless Piezoelectric Pump

scholarly journals Simulation of raindrop-shaped flow tube valveless piezoelectric pump

2019 ◽  
Vol 1314 ◽  
pp. 012047
Author(s):  
Ming Tang ◽  
Qibo Bao ◽  
Jianhui Zhang ◽  
Liyi Lai ◽  
Qingshuang Ning
Keyword(s):  
Flow Tube ◽  
Piezoelectric Pump ◽  
Valveless Piezoelectric Pump
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