Design and experimental research of piezoelectric pump based on macro fiber composite

Dong, Jing; Chen, Quanqu; Xu, Zhi; Chen, Wenhua; Wu, Yue; Yang, Zhigang

doi:10.1016/j.sna.2020.112123

Cited by 14 publications

(3 citation statements)

References 14 publications

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“…As the diameter of the inlet increases from 0.2 to 1 mm, the central displacement of the actuator changes from 10 to 20 μm and stabilizes at 20 μm, while the gas flowrate increases from 12.7 to 95 mL/min and then decreases to 51 mL/min. This phenomenon occurs mainly because if the inlet diameter is too large, the efficiency of the fluid being sucked in is low, and the rate of backflow from the inlet increases 27 from 0.4 to 2 mm, both the displacement and gas flowrate initially increase and then stabilize. The phenomenon changes with the change in the inlet diameter because of the structural differences below and above the PE actuator.…”

Section: Structural Optimization Of the Piezoelectric Micropumpmentioning

confidence: 99%

Analytical and experimental study of a valveless piezoelectric micropump with high flowrate and pressure load

Xuan

et al. 2023

Microsyst Nanoeng

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Miniaturized gas pumps based on electromagnetic effect have been intensively studied and widely applied in industries. However, the electromagnetic effect-based gas pumps normally have large sizes, high levels of noises and high power consumption, thus they are not suitable for wearable/portable applications. Herein, we propose a high-flowrate and high-pressure load valveless piezoelectric micropump with dimensions of 16 mm*16 mm*5 mm. The working frequency, vibration mode and displacement of the piezoelectric actuator, the velocity of gas flow, and the volume flowrate of the micropump are analyzed using the finite element analysis method. The maximum vibration amplitude of the piezoelectric actuator reaches ~29.4 μm. The output gas flowrate of the pump is approximately 135 mL/min, and the maximum output pressure exceeds 40 kPa. Then, a prototype of the piezoelectric micropump is fabricated. Results show that performance of the micropump is highly consistent with the numerical analysis with a high flowrate and pressure load, demonstrated its great potential for wearable/portable applications, especially for blood pressure monitoring.

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Section: Structural Optimization Of the Piezoelectric Micropumpmentioning

confidence: 99%

Analytical and experimental study of a valveless piezoelectric micropump with high flowrate and pressure load

Xuan

et al. 2023

Microsyst Nanoeng

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“…Generally, the fluid is driven by the piezoelectric pump through the piezoelectric vibrator and special structures. It has the advantages of a simple structure [ 15 ], easy miniaturization [ 16 ], and no electromagnetic interference [ 17 ], leading to widespread use in microfluidic applications [ 5 , 6 , 7 ], medical equipment [ 18 , 19 , 20 ], fuel cells [ 21 , 22 , 23 ], and other fields. In terms of structure, piezoelectric pumps can be divided into valve-based piezoelectric pumps and valve-less piezoelectric pump [ 13 ].…”

Section: Introductionmentioning

confidence: 99%

Working Mechanisms and Experimental Research of Piezoelectric Pump with a Cardiac Valve-like Structure

Zhou

Sun²,

Fu³

et al. 2022

Micromachines

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In this study, based on the working principle of the cardiac valve structure that prevents blood from flowing back, a piezoelectric pump with a cardiac valve-like structure (PPCVLS) is designed. The operating principles of cardiac-valve-like structures (CVLSs) are introduced. Furthermore, the closure conditions of the CVLSs on both sides of the flow channel are explored. The principle behind the working-state conversion between “valve-based” and “valve-less” of PPCVLS is also analyzed. A high-speed dynamic microscopic image-analysis system was utilized to observe and verify the working-state conversion between “valve-based” and “valve-less” PPCVLSs. The resonant frequency of the piezoelectric pump was measured by Doppler laser vibrometer, and the optimal working frequency of the piezoelectric vibrator was determined as 22.35 Hz. The prototype piezoelectric pump was fabricated by the 3D printing technique, and the output performance of the piezoelectric pump was also evaluated. The experimental results show that the piezoelectric pump is valve-based when the driving voltage is greater than 140V, and the piezoelectric pump is valve-less when the driving voltage is less than 140 V. Furthermore, the maximum output pressure of the piezoelectric pump was 199 mm H2O when driven by the applied voltage of 220 V at 7 Hz, while the maximum flow rate of the piezoelectric pump was 44.5 mL/min when driven by the applied voltage of 220 V at 11 Hz.

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“…Accordingly, piezoelectric pumps have become the most widely researched microfluidic pumps. According to whether there are valves, piezoelectric pumps can be divided into valve-less [7][8][9][10], with passive valves [11][12][13] and with active valves [14][15][16]. According to number of chambers, piezoelectric pumps can be divided into single-chamber [17,18] and multi-chamber [9,[14][15][16][19][20][21].…”

Section: Introductionmentioning

confidence: 99%

A multi-chamber piezoelectric pump based on pumping unit with double circular piezoelectric unimorph actuators

Wang¹,

Peng²,

Tang³

et al. 2021

Smart Mater. Struct.

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For improving flow rate of multi-chamber piezoelectric pump with active valves, principle and structure of multi-chamber piezoelectric pump based on pumping unit with double circular piezoelectric unimorph actuators (CPUAs) are proposed. Double CPUAs are coaxially and symmetrically arranged on top and bottom of pump chamber and work in same frequency and phase at same time to provide driving force for pump. Two active piezoelectric valves with annular boundary are designed on left and right of pumping unit to ensure the multi-chamber piezoelectric pump bidirectionally pump fluid with high control accuracy and stop characteristics. Process compatible with printed circuit board (PCB) process is used to manufacture pump to ensure low cost. Flow rate model is established to numerically simulate flow characteristics of the pump. Pump is also experimentally tested and analyzed. Results show that proposed principle and structure can effectively improve flow rate and out pressure of multi-chamber piezoelectric pump with high control accuracy and stop characteristics of flow. Moreover, flow rate model can accurately describe its flow characteristics, which will be beneficial to design and optimize multi-chamber piezoelectric pumps with active valves. Proposed principle and structure of multi-chamber piezoelectric pumps with active valves have potential applications in complex microfluidic systems such as biochemical analysis, drug delivery and chip cooling.

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Design and experimental research of piezoelectric pump based on macro fiber composite

Cited by 14 publications

References 14 publications

Analytical and experimental study of a valveless piezoelectric micropump with high flowrate and pressure load

Analytical and experimental study of a valveless piezoelectric micropump with high flowrate and pressure load

Working Mechanisms and Experimental Research of Piezoelectric Pump with a Cardiac Valve-like Structure

A multi-chamber piezoelectric pump based on pumping unit with double circular piezoelectric unimorph actuators

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