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A valveless piezoelectric pump with novel flow path design of function of rectification to improve energy

Frontiers of Mechanical Engineering 2022, Volume 17, Issue 3, doi: 10.1007/s11465-022-0685-3

Abstract: Existing valveless piezoelectric pumps are mostly based on the flow resistance mechanism to generateflow field simulation, the proposed tubes were integrated into a piezo-driven chamber, and a novel valvelesspiezoelectric pump with the function of rectification (NVPPFR) was reported.Unlike previous pumps, the reported pump directed the reflux fluid to another flow channel differentThe development of NVPPFR compensated for the inefficiency of traditional valveless piezoelectric pumps

Keywords： composite tube valveless piezoelectric pump rectification energy efficiency

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Theoretical analysis and experimental investigation of valveless piezoelectric pump with unsymmetrical

ZHANG Jianhui, LU Jizhuang, XIA Qixiao, LI Hong

Frontiers of Mechanical Engineering 2007, Volume 2, Issue 1, Pages 13-19 doi: 10.1007/s11465-007-0002-1

Abstract: A novel valveless piezoelectric pump with unsymmetrical ridges is presented at first.cuneiform channels are asymmetrically and alternately formed between the unsymmetrical ridges and the piezoelectricThen, by analyzing the vibration of the piezoelectric vibrator, the vibration deformation function andFinally, a real valveless piezoelectric pump with unsymmetrical ridges is manufactured, and the flowrate of the pump is measured through experiments.

Keywords： unsymmetrical theoretical flow theoretical equation pump flow converse flow

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Research on the valveless piezoelectric pump with Y-shape pipes

ZHANG Jianhui, LU Jizhuang, XIA Qixiao

Frontiers of Mechanical Engineering 2007, Volume 2, Issue 2, Pages 144-151 doi: 10.1007/s11465-007-0024-8

Abstract: A piezoelectric pump with its Y-shape elements is presented.Y-shape pipes are fixed outside the chamber serving as an inlet and outlet, with the chamber and a piezoelectricThe pump has the potential to be miniaturized and integrated.In this paper, the structure of the pump is first presented.of the theory on this pump.

Keywords： chamber serving beneficial working frequency long-link correction

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Present situation and classification of piezoelectric pump

Fang YE, Shouyin WANG, Wei CHENG, Qixiao XIA, Jianhui ZHANG,

Frontiers of Mechanical Engineering 2009, Volume 4, Issue 4, Pages 420-429 doi: 10.1007/s11465-009-0052-7

Abstract: According to the present classification method for a piezoelectric pump, this paper reviews the developmentA volumetric piezoelectric pump, which belongs to traditional volumetric pumps, can be divided into apiezoelectric pump with or without valves.A new valveless piezoelectric pump nowadays becomes a hot issue in scientific research.New forms of piezoelectric pumps, different from traditional ones, are only at the stage of conception

Keywords： piezoelectric pump development and present situation new classification method valveless piezoelectricpump new forms of piezoelectric pump

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Piezoelectric pump with flexible venous valves for active cell transmission

Frontiers of Mechanical Engineering 2022, Volume 17, Issue 4, doi: 10.1007/s11465-022-0712-4

Abstract: The development of organ-on-a-chip systems demands high requirements for adequate micro-pump performanceIn this study, we designed a piezoelectric pump with a flexible venous valve inspired by that of humansPerformance test of the proposed pump with deionized water as the transmission medium shows a maximumA computational model of the electric-solid-liquid multi-physical field coupling of the piezoelectricIn addition, the multi-physical field coupling computational model established for the proposed piezoelectric

Keywords： venous valve flexible venous valve cell transmission organ-on-a-chip system piezoelectric device

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Novel piezoelectric pump with “E”-shaped valve found from sub-experiments

Jianhui ZHANG, Jun HUANG, Xiaoqi HU, Qixiao XI,

Frontiers of Mechanical Engineering 2010, Volume 5, Issue 2, Pages 212-218 doi: 10.1007/s11465-010-0009-x

Abstract: Increasing the driving frequency of a piezoelectric vibrator can resolve the bottleneck of low flow ina valve piezoelectric pump.However, a piezoelectric pump of a traditional valve body presents the hysteretic nature of the valveFirst, through the sub-experiment on various parameters of the plate valve of a piezoelectric pump, theSecond, an “E”-shaped valve and piezoelectric pump with an “E”-shaped valve (

Keywords： piezoelectricity valve pump experiment “ E” -shaped valve

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Piezoelectric diffuser/nozzle micropump with double pump chambers

WANG Wei, ZHANG Ying, TIAN Li, CHEN Xiaojie, LIU Xiaowei

Frontiers of Mechanical Engineering 2008, Volume 3, Issue 4, Pages 449-453 doi: 10.1007/s11465-008-0076-4

Abstract: check valve fatigue and valve clogging, diffuser/nozzle elements are used for flow rectification in a valvelessIn this paper, a diffuser/nozzle Si/Glass micropump with two pump chambers by IC and MEMS technologyThe pump is equipped with a glass cover board so as to conveniently observe the flow status.The driving force of the micropump is produced by the PZT piezoelectric actuator.back pressure, and flow rate are both double that of the pump driven in same-phase.

Keywords： diffuser/nozzle Si/Glass phenomenon rectification diffuser/nozzle micropump frequency

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Research on the method of cavitations resistance in a piezoelectric pump with 3-dimensional mesh structure

ZHANG Jian-hui, Bai Heng-jun, XIA Qi-xiao, NING Hong-gang, ONUKI Akiyoshi

Frontiers of Mechanical Engineering 2006, Volume 1, Issue 4, Pages 429-433 doi: 10.1007/s11465-006-0052-9

Abstract: The volume valve piezoelectric pump has received increasing attention from many areas because of itsHowever, when the pump is working, it produces cavitations and the air bubbles that originate from thesewill flow out of the pump.Cavitations occurring in the pump will bring out noise and shorten the life of the pump.Furthermore, air bubbles flowing out of the pump will hinder its application in areas such as medical

Keywords： different 3-dimensional occurrence effective Resistant-Layers

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Research on applications of piezoelectric materials in smart structures

Jinhao QIU, Hongli JI

Frontiers of Mechanical Engineering 2011, Volume 6, Issue 1, Pages 99-117 doi: 10.1007/s11465-011-0212-4

Abstract:

Piezoelectric materials have become the most attractive functional materials for sensors and actuatorsIn this article, some research activities on the applications of piezoelectric materials in smart structuresenergy harvesting using new electronic interfaces, structural health monitoring based on a new type of piezoelectric

Keywords： piezoelectric materials vibration control energy harvesting structural health monitoring piezoelectric

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Elliptical lobe shape gerotor pump design to minimize wear

Mohammad Reza KARAMOOZ RAVARI

Frontiers of Mechanical Engineering 2011, Volume 6, Issue 4, Pages 429-434 doi: 10.1007/s11465-011-0247-6

Abstract:

The gerotor pumps are the most important parts of mechanical equipment that have a vast number of applications in industries and automobiles. Because the gerotor pumps cannot be adjusted for wear so it is important to reduce the wear as much as possible. In this paper first mathematical equations for elliptical lobe shape rotors profile and curvature of them have been derived and then Specific flow and wear rate proportional factor (WRPF) have been formulated. To reach the minimum wear in rotors teeth, the ellipse shape factor is changed for each value of number of outer rotor teeth in a feasible range and wear rate proportional factor has been resulted. Also in order to have better comparison specific flow has been presented. The obtained results have been compared with circular pumps with similar geometrical parameters and show the significant improvement in wear of the rotors with negligible changes in the specific flow.

Keywords： gerotor pump elliptical lobe shape pump wear rate proportional factor (WRPF) specific flow

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Robust isogeometric topology optimization for piezoelectric actuators with uniform manufacturability

Frontiers of Mechanical Engineering 2022, Volume 17, Issue 2, doi: 10.1007/s11465-022-0683-5

Abstract: Piezoelectric actuators have received substantial attention among the industry and academia due to quickHowever, the design of piezoelectric actuators always suffers from the emergence of several localizedcurrent paper is to propose a robust isogeometric topology optimization (RITO) method for the design of piezoelectricthe conventional finite element method is applied to compute the unknown electro elastic fields in piezoelectricFinally, the RITO formulation for the design of piezoelectric materials is developed, and several numerical

Keywords： piezoelectric actuator isogeometric topology optimization uniform manufacturability robust formulation

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Novel precision piezoelectric step rotary actuator

LIU Jianfang, YANG Zhigang, ZHAO Hongwei, CHENG Guangming

Frontiers of Mechanical Engineering 2007, Volume 2, Issue 3, Pages 356-360 doi: 10.1007/s11465-007-0062-2

Abstract: A novel piezoelectric (PZT) precision step rotary actuator was developed on the basis of PZT technology

Keywords： developed stability ineffective anchoring/loosening technology piezoelectric

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Extended two-fluid model applied to analysis of bubbly flow in multiphase rotodynamic pump impeller

Zhiyi YU, Guoyu WANG, Shuliang CAO

Frontiers of Mechanical Engineering 2009, Volume 4, Issue 1, Pages 53-59 doi: 10.1007/s11465-009-0006-0

Abstract: and air-water two-phase flow with the inlet gas volume fraction being 15% in a multiphase rotodynamic pumpimpeller and the pump head performance is predicted.

Keywords： two-fluid model multiphase rotodynamic pump SIMPLEC algorithm numerical simulation

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R&D of the ground-coupled heat pump technology in China

Nairen DIAO, Ping CUI, Junhong LIU, Zhaohong FANG,

Frontiers in Energy 2010, Volume 4, Issue 1, Pages 47-54 doi: 10.1007/s11708-009-0080-3

Abstract: The ground-coupled heat pump (GCHP) systems have been identified as one of the best sustainable energy

Keywords： ground source heat pump ground heat exchanger HVAC China

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Evaluation of the performance of a centralized ground-water heat pump system in cold climate region

Shilei LU,Zhe CAI,Li ZHANG,Yiran LI

Frontiers in Energy 2014, Volume 8, Issue 3, Pages 394-402 doi: 10.1007/s11708-014-0310-1

Abstract: The aim of this study is to evaluate the performance of a centralized open-loop ground-water heat pumpThe analysis of the testing data indicates that the average heat-pump coefficient of performance (COP

Keywords： ground-water heat pump (GWHP) actual coefficient of performance heat transfixion