eprintid: 1535759
rev_number: 34
eprint_status: archive
userid: 608
dir: disk0/01/53/57/59
datestamp: 2017-01-14 22:25:58
lastmod: 2021-10-20 23:35:16
status_changed: 2017-08-03 10:39:25
type: article
metadata_visibility: show
creators_name: Zhang, R
creators_name: You, F
creators_name: Lv, Z
creators_name: He, Z
creators_name: Wang, H
creators_name: Huang, L
title: Development and Characterization a Single-Active-Chamber Piezoelectric Membrane Pump with Multiple Passive Check Valves
ispublished: pub
divisions: UCL
divisions: B04
divisions: C05
keywords: piezoelectric membrane pump; PZT actuator; multiple check valves; flow rate; backpressure
note: This is an open access article distributed under the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).
abstract: 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.
date: 2016-12
date_type: published
official_url: http://dx.doi.org/10.3390/s16122108
oa_status: green
full_text_type: pub
pmcid: PMC5191088
language: eng
primo: open
primo_central: open_green
article_type_text: Journal Article
verified: verified_manual
elements_id: 1196410
doi: 10.3390/s16122108
pii: s16122108
lyricists_name: Lu, Zhihan
lyricists_id: ZLUXX31
actors_name: Flynn, Bernadette
actors_id: BFFLY94
actors_role: owner
full_text_status: public
publication: Sensors
volume: 16
number: 12
article_number: 2108
event_location: Switzerland
issn: 1424-8220
citation:        Zhang, R;    You, F;    Lv, Z;    He, Z;    Wang, H;    Huang, L;      (2016)    Development and Characterization a Single-Active-Chamber Piezoelectric Membrane Pump with Multiple Passive Check Valves.                   Sensors , 16  (12)    , Article 2108.  10.3390/s16122108 <https://doi.org/10.3390/s16122108>.       Green open access   
 
document_url: https://discovery.ucl.ac.uk/id/eprint/1535759/1/Zhang_Development_Characterization_Single-Active-Chamber.pdf