|
|
|
| Design of singlechamber gas piezoelectric pump |
| SUN Xiao-Feng, YANG Zhi-Gang, HE Ye-Rong, SHAO Ze-Bo |
| (1. Department of Machinery and Electricity Engineering, Jilin Institute of Chemical Technology, Jilin, Jilin 132022, China; 2.College of Mechanical Science and Engineering, Jilin University, Changchun, Jilin 130025, China; 3.Jilin Machinery Manufacture Branch,PetroChina Northeast Refining ＆ Chemical Engineering Co. Ltd., Jilin, Jilin 132021, China) |
|
|
|
|
Abstract In order to fabricate gas piezoelectric pumps with better performance, a new type of umbrellashaped rubber valve was designed. The discharge coefficient of that valve was analyzed, and the valve performance was simulated by applying Ansys software. Consequently, the natural frequencies from first to tenth order and the critical pressure difference across the valve under which it will be failure were determined. The results showed that the pump breaks down, i.e., its valve cannot close by itself properly due to a too large opening height, if the pressure difference across the valve is higher than the critical value 800 Pa, when working at a frequency lower than the firstorder natural frequency of the valve. Also, the thermal performance of the piezoelectric vibrator was measured when pumping air. It was showed that the temperature of the vibrator at thermal equilibrium is less than 70 ℃ when it was driven 110 V voltage at a less than 400 Hz frequency. A singlechamber gas piezoelectric pump with the newly designed umbrella rubber valve was tested by using air and water. It was showed that for air the optimum working frequency is 380 Hz, and the maximum output flowrate and pressure are 1 889 mL/min and 5.1 kPa; for liquid, however, the best working frequency is 240 Hz, and the maximum output flowrate and pressure are 300 mL/min and 25.0 kPa. These results confirm that the singlechamber gas piezoelectric pump has a better capability of pumping gas.
|
|
Received: 15 September 2012
Published: 31 March 2013
|
|
|
|
| ［1］Spence W J, Corbett W T, Dominguez L R. An electronically controlled piezoelectric insulin pump and valves［J］. IEEE Transactions on Sonics and Ultrasonics, 1978, 25(3): 153-156.［2］孙晓锋,杨志刚,柴丛良, 等. 单腔双振子压电泵的结构设计与试验研究［J］. 压电与声光, 2007, 29(5): 593-595.Sun Xiaofeng,Yang Zhigang,Chai Congliang, et al. Structural design and experimental research on singlechambered piezoelectric pump with double actuators［J］. Piezoelectectrics ＆ Acoustooptics, 2007, 29(5): 593-595. (in Chinese)［3］孙晓锋, 李欣欣, 杨志刚.带整体开启阀的双腔串联压电薄膜泵［J］. 吉林大学学报:工学版,2006, 36(4): 529-533.Sun Xiaofeng,Li Xinxin,Yang Zhigang. Piezoelectric membrane pump with seriesconnected double chambers and holistic opening valve［J］. Journal of Jilin University:Engineering and Technology Edition,2006, 36(4):529-533. (in Chinese)［4］杨志刚, 孙晓锋, 张德君. 双腔串联两阀与三阀压电泵的性能研究［J］. 光学精密工程, 2007, 15(2): 219-223.Yang Zhigang, Sun Xiaofeng, Zhang Dejun. Performance research on doublevalved and threevalved piezoelectric pumps with double serieswound chambers［J］. Optics and Precision Engineering, 2007, 15 (2):219-223. (in Chinese)［5］Kan Junwu, Tang Kehong, Liu Guojun, et al. Development of serialconnection piezoelectric pumps［J］. Sensors and Actuators A,2008, 144(2): 321-327.［6］孙晓锋,杨志刚,姜德龙.两种双腔串联压电泵结构设计与性能比较［J］. 排灌机械工程学报,2011,29(1):31-34.Sun Xiaofeng, Yang Zhigang,Jiang Delong. Structural design and performance comparison of two kinds of piezoelectric pump with two chambers in series［J］. Journal of Drainage and Irrigation Machinery Engineering, 2011,29(1):31-34. (in Chinese)［7］姜德龙,程光明,孙晓锋，等.输送流体双腔并联压电泵性能分析与试验研究［J］.西安交通大学学报,2010,44(3):82-85. Jiang Delong,Cheng Guangming,Sun Xiaofeng,et al. Performance analysis and experimental study on delivery fluid of doublechamber piezoelectric pump in parallel［J］. Journal of Xi′an Jiaotong University, 2010,44(3):82-85. (in Chinese)［8］Anis Y, Houkal J, Holl M, et al. Diaphragm picoliter pump for singlecell manipulation［J］. Biomedical Microdevices, 2011, 13(4):651-659.［9］Ma H K, Huang S H,Chen B R,et al.Numerical study of a novel microdiaphragm flow channel with piezoelectric device for proton exchange membrane fuel cells［J］. Journal of Power Sources,2008,180(1): 402-409.［10］孙晓锋.双振子压电泵设计理论与结构优化技术研究 ［D］.长春:吉林大学机械科学与工程学院,2009.［11］Laser D J, Santiago J G. A review of micropumps［J］. Journal of Micromechanics and Microengineering, 2004, 14(6): 35-64. |
|
|
|
