Development and Characterization a Single-Active-Chamber Piezoelectric Membrane Pump with Multiple Passive Check Valves

In order to prevent the backward flow of piezoelectric pumps, this paper presents a single-active-chamber piezoelectric membrane pump with multiple passive check valves. Under the condition of a fixed total number of passive check valves, by means of changing the inlet valves and outlet valves’ conf...

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Main Authors: Ronghui Zhang, Feng You, Zhihan Lv, Zhaocheng He, Haiwei Wang, Ling Huang
Format: Article
Language:English
Published: MDPI AG 2016-12-01
Series:Sensors
Subjects:
Online Access:http://www.mdpi.com/1424-8220/16/12/2108
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author Ronghui Zhang
Feng You
Zhihan Lv
Zhaocheng He
Haiwei Wang
Ling Huang
author_facet Ronghui Zhang
Feng You
Zhihan Lv
Zhaocheng He
Haiwei Wang
Ling Huang
author_sort Ronghui Zhang
collection DOAJ
description In order to prevent the backward flow of piezoelectric pumps, this paper presents a single-active-chamber piezoelectric membrane pump with multiple passive check valves. Under the condition of a fixed total number of passive check valves, by means of changing the inlet valves and outlet valves’ configuration, the pumping characteristics in terms of flow rate and backpressure are experimentally investigated. Like the maximum flow rate and backpressure, the testing results show that the optimal frequencies are significantly affected by changes in the number inlet valves and outlet valves. The variation ratios of the maximum flow rate and the maximum backpressure are up to 66% and less than 20%, respectively. Furthermore, the piezoelectric pump generally demonstrates very similar flow rate and backpressure characteristics when the number of inlet valves in one kind of configuration is the same as that of outlet valves in another configuration. The comparison indicates that the backflow from the pumping chamber to inlet is basically the same as the backflow from the outlet to the pumping chamber. No matter whether the number of inlet valves or the number of outlet valves is increased, the backflow can be effectively reduced. In addition, the backpressure fluctuation can be significantly suppressed with an increase of either inlet valves or outlet valves. It also means that the pump can prevent the backflow more effectively at the cost of power consumption. The pump is very suitable for conditions where more accurate flow rates are needed and wear and fatigue of check valves often occur.
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spelling doaj.art-bde8bf8025144e38877cdae77292e84d2022-12-22T04:19:41ZengMDPI AGSensors1424-82202016-12-011612210810.3390/s16122108s16122108Development and Characterization a Single-Active-Chamber Piezoelectric Membrane Pump with Multiple Passive Check ValvesRonghui Zhang0Feng You1Zhihan Lv2Zhaocheng He3Haiwei Wang4Ling Huang5Research Center of Intelligent Transportation System, School of Engineering, Sun Yat-sen University, Guangzhou 510275, ChinaSchool of Civil Engineering and Transportation, South China University of Technology, Guangzhou 510640, ChinaDepartment of Computer Science, University College London, 66-72 Gower Street, London WC1E 6EA, UKResearch Center of Intelligent Transportation System, School of Engineering, Sun Yat-sen University, Guangzhou 510275, ChinaSchool of Civil Engineering and Transportation, South China University of Technology, Guangzhou 510640, ChinaSchool of Civil Engineering and Transportation, South China University of Technology, Guangzhou 510640, ChinaIn order to prevent the backward flow of piezoelectric pumps, this paper presents a single-active-chamber piezoelectric membrane pump with multiple passive check valves. Under the condition of a fixed total number of passive check valves, by means of changing the inlet valves and outlet valves’ configuration, the pumping characteristics in terms of flow rate and backpressure are experimentally investigated. Like the maximum flow rate and backpressure, the testing results show that the optimal frequencies are significantly affected by changes in the number inlet valves and outlet valves. The variation ratios of the maximum flow rate and the maximum backpressure are up to 66% and less than 20%, respectively. Furthermore, the piezoelectric pump generally demonstrates very similar flow rate and backpressure characteristics when the number of inlet valves in one kind of configuration is the same as that of outlet valves in another configuration. The comparison indicates that the backflow from the pumping chamber to inlet is basically the same as the backflow from the outlet to the pumping chamber. No matter whether the number of inlet valves or the number of outlet valves is increased, the backflow can be effectively reduced. In addition, the backpressure fluctuation can be significantly suppressed with an increase of either inlet valves or outlet valves. It also means that the pump can prevent the backflow more effectively at the cost of power consumption. The pump is very suitable for conditions where more accurate flow rates are needed and wear and fatigue of check valves often occur.http://www.mdpi.com/1424-8220/16/12/2108piezoelectric membrane pumpPZT actuatormultiple check valvesflow ratebackpressure
spellingShingle Ronghui Zhang
Feng You
Zhihan Lv
Zhaocheng He
Haiwei Wang
Ling Huang
Development and Characterization a Single-Active-Chamber Piezoelectric Membrane Pump with Multiple Passive Check Valves
Sensors
piezoelectric membrane pump
PZT actuator
multiple check valves
flow rate
backpressure
title Development and Characterization a Single-Active-Chamber Piezoelectric Membrane Pump with Multiple Passive Check Valves
title_full Development and Characterization a Single-Active-Chamber Piezoelectric Membrane Pump with Multiple Passive Check Valves
title_fullStr Development and Characterization a Single-Active-Chamber Piezoelectric Membrane Pump with Multiple Passive Check Valves
title_full_unstemmed Development and Characterization a Single-Active-Chamber Piezoelectric Membrane Pump with Multiple Passive Check Valves
title_short Development and Characterization a Single-Active-Chamber Piezoelectric Membrane Pump with Multiple Passive Check Valves
title_sort development and characterization a single active chamber piezoelectric membrane pump with multiple passive check valves
topic piezoelectric membrane pump
PZT actuator
multiple check valves
flow rate
backpressure
url http://www.mdpi.com/1424-8220/16/12/2108
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