| 气泡对无阀微泵动态特性影响的实验研究 |
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| 引用本文： | 蒋丹,李松晶,杨平.气泡对无阀微泵动态特性影响的实验研究[J].气动实验与测量控制,2010(3):34-38,62. |
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| 作者姓名： | 蒋丹 李松晶 杨平 |
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| 作者单位： | [1]电子科技大学机电学院,成都611731 [2]哈尔滨工业大学机电学院,哈尔滨150001 |
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| 基金项目： | 教育部留学回国基金项目（24403604）; 浙江大学流体传动及控制国家重点实验室开放基金项目（GZKF-2007002） |
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| 摘 要： | 采用高速摄像机拍摄了收缩管/扩张管型无阀压电微泵泵腔中气泡的变化,包括进入、移动、合并和分离等过程。同时,采用压阻式微型压力传感器测试无阀压电微泵泵腔的压力脉动。实验结果表明气泡进入泵腔之后,流体有效体积弹性模量和无阀微泵压力脉动幅值明显减少,气泡的进入使无阀微泵的工作性能大大降低,甚至导致微泵无法正常工作;而气泡移动、合并和分离对流体有效体积弹性模量和微泵的动态特性影响较小。
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| 关 键 词： | 无阀微泵 气泡 高速摄像 压力脉动 |
Experimental study on the influence of bubbles on dynamic characteristics of valve-less micropump |
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| Authors: | JIANG Dan LI Song-jing YANG Ping |
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| Institution: | 1.School of Mechatronics Engineering,University of Electronic Science and Technology of China,Chengdu 611731,China;2.School of Mechatronics Engineering,Harbin Institute of Technology,Harbin 150001,China) |
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| Abstract: | The actions of bubbles in a piezoelectric valve-less nozzle/diffuser micropump,including entrance,movement,combination and separation in the pump chamber,are recorded by a high speed video camera.A piezoresistive micro pressure transducer is used to measure the pressure pulsations in the piezoelectric valve-less micropump chamber.Experimental results show that the effective bulk modulus of fluid and the amplitude of pressure pulsations in the valve-less micropump decrease significantly with the bubbles into the pump chamber.The entrance of bubbles can lead to performance deterioration and even complete failure of the micropump.However,the movement,combination and separation of bubbles have little effect on the effective bulk modulus of fluid and the dynamic characteristics of micropump. |
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| Keywords: | valve-less micropump bubble high-speed video pressure pulsation |
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