中文摘要：

针对坡面腔底无阀压电泵流量小的问题,提出并研制了一种锥管坡面腔底无阀压电泵,即将锥管与坡面腔底组合式新结构作为其无移动部件阀。首先,提出了锥管坡面腔底无阀压电泵结构并分析其工作原理,对泵流量进行理论分析;同时,运用Fluent软件的动网格功能对其内部流场模拟分析。仿真结果表明,该泵具有单向流动特性,在泵腔内部产生漩涡利于液体的混合搅拌。最后,加工制作了锥管坡面腔底无阀压电泵样机,并对该泵进行了流量试验。试验结果表明,驱动电压峰值为250V,频率为5 Hz时,最大流量为25.9mL/min,证明了锥管坡面腔底无阀压电泵的有效性。

英文摘要：

Aiming at the small flow rate problem of valveless piezoelectric pump with slopes element,a structure of valveless piezoelectric pump with taper pipe slopes element is proposed and fabricated,that is,using the new combination structure of the taper pipe and slopes element as its non-mobile components of the valve.Firstly,the structure of valveless piezoelectric pump with taper pipe slopes element is designed and its working principle is analyzed,then its flow rate of the pump is analyzed theoretically.Meanwhile,the Fluent software and its dynamic grid function is employed in simulating the flow fields of the pump.The simulation results show that the pump has a function of unidirectional flow characteristics,and fluid swirl in favor of mixing liquid inside the pump chamber.Finally,we manufactured the valveless piezoelectric pump,and the experimental results shows that the maximum flow rate of the valveless pump with taper pipe slopes element is 25.9mL/min at a driving power supply peak voltage of250 Vand frequency of 5Hz.These results demonstrate the feasibility of the valveless piezoelectric pump with taper pipe slopes element.