Results 101 to 110 of about 191 (125)
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Review of Scientific Instruments, 2021
In response to the serious problem of backflow in valveless piezoelectric pumps, this paper proposes a valveless piezoelectric pump with a bullhorn-shaped structure. In this paper, we analyze the flow guide by using the “tail flow space pressure comparison method” and “fluid unit dynamic analysis method,” revealing the working principle of the flow ...
Lipeng He +6 more
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In response to the serious problem of backflow in valveless piezoelectric pumps, this paper proposes a valveless piezoelectric pump with a bullhorn-shaped structure. In this paper, we analyze the flow guide by using the “tail flow space pressure comparison method” and “fluid unit dynamic analysis method,” revealing the working principle of the flow ...
Lipeng He +6 more
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Design methodology of a self-priming PMMA valveless piezoelectric micro-pump
2013 IEEE International Instrumentation and Measurement Technology Conference (I2MTC), 2013A design methodology for a self-priming PMMA valveless piezoelectric micro-pump has been proposed. A finite element-based software has been used to investigate the feasible device configurations. Both actuator and diffuser parameters have been studied.
Arlindo G. S. Barreto Neto +5 more
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A valveless piezoelectric pump with multistage Y-shape treelike bifurcate tubes
2012 IEEE International Conference on Robotics and Biomimetics (ROBIO), 2012At present, liquid cooling system employed piezoelectric pump, in which valve limits reliability and miniaturization of the piezoelectric pump and liquid cooling system. For this problem, a valveless piezoelectric pump with multistage Y-shape treelike bifurcate tubes is developed in this research.
Jun Huang 0004, Jianhui Zhang
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Fabrication and Drive Test of Piezoelectric PDMS Valveless Micro Pump
Journal of the Chinese Institute of Engineers, Transactions of the Chinese Institute of Engineers,Series A/Chung-kuo Kung Ch'eng Hsuch K'an, 2008Poly-dimethylsiloxane (PDMS) valveless micropumps with single chambers and double chambers, based on a reciprocation principle, are fabricated in this work. A drive test of a piezoelectric valveless PDMS micro pump is conducted and the influence on the flow behavior of water is investigated.
Hsien-Kuang Liu
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Science China Technological Sciences, 2011
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Chunsheng Zhao, Jianhui Zhang
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zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Chunsheng Zhao, Jianhui Zhang
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Design and flow characteristic of valveless piezoelectric pump with half-cone bluff body
Proceedings of the 2020 2nd International Conference on Big Data and Artificial Intelligence, 2020The valveless piezoelectric pumps with half-cone bluff body (HCBB) of different radii (R = 2mm, 2.5mm, 3mm and 3.5mm) were designed. The working principle of pumps and the vibration characteristic of piezoelectric vibrator were analyzed, and the output quantity formula of pumps was deduced.
Tianxiang Yan, Ping Wen, Dong Su
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Fabrication and Basic Characterization of a Piezoelectric Valveless Micro Jet Pump
Japanese Journal of Applied Physics, 2008A piezoelectric-driven valveless micro jet pump with a novel channel structure has been designed and fabricated. The simple structure micro jet pump consists of a lead zirconate titanate (PZT) diaphragm and flow channels. The design of the flow channels focuses on a cross junction formed by the neck of the pump chamber and one outlet and two opposite ...
Katsuhiko Tanaka +5 more
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Experimental study of valveless piezoelectric pump with raindrop-shaped tubes
Proceedings of the 2018 International Conference on Service Robotics Technologies, 2018This paper draws inspiration from the natural phenomenon of raindrops landing in the air, and puts forward a kind of valveless piezoelectric pump with raindrop-shaped tubes. According to this idea, we designed and manufactured a valveless piezoelectric pump with raindrop-shaped tubes, which is driven by a piezoelectric vibrator.
Li Fan +4 more
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Science China Technological Sciences, 2010
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Qixiao Xia +2 more
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zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Qixiao Xia +2 more
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Design and experiment of valveless piezoelectric pump with triangular prism bluff body
Optics and Precision Engineering, 2016以三棱柱阻流体为无移动部件阀,结合3D打印技术的快速一体成型特点,设计并制作了以压电振子为动力源的三棱柱阻流体无阀压电泵.分析了该无阀压电泵的工作原理、理论流量和振子振动特性,推导出了它的的流量表达式.利用有限元法对三棱柱阻流体的流阻特性进行了仿真模拟,由其内部压强分布及进出口流速情况,定性分析了三棱柱阻流体的正反向流阻大小.最后,使用3D打印机制作了该无阀泵的试验样机,并进行了流阻和流量测量试验.试验结果表明:三棱柱阻流体具有正反向绕流流阻不等的特性,当驱动电压为550 V,驱动频率为8 Hz时,该压电泵的输出流量达到最大,为29.8 mL/min.结果证明了该三棱柱阻流体无阀压电泵具有良好的输送流体的能力.
张蕊华 ZHANG Rui-hua +3 more
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