3D打印的锥管坡面腔底无阀压电泵
Principles and Experimental Verification of Valveless Piezoelectric Pump with Taper Pipe Slopes Element

为提高阀压电泵的流量特性和解决泵加工工艺性差的问题，研制出了锥形流管坡面腔底阀泵。首先，提出并设计了锥形流管坡面腔底阀泵，分析了该泵的工作原理；然后，利用ansys软件对泵腔内流场做了模拟分析，分析结果表明该泵具有传输流体的能力；最后，利用3D打印技术制作了锥形流管坡面腔底阀泵，并对泵的频率 流量特性进行了试验，驱动频率为8 Hz时，锥形流管坡面腔底阀泵的流量达到最大值26.8 ml/min，比相同尺寸坡面腔底阀压电泵在相同驱动电压条件下输出的最大流量增加了18.6%。试验结果表明，锥形流管坡面腔底阀泵的流量特性优于坡面腔底阀压电泵，且采用3D打印技术制作压电泵，提高了泵加工的工艺性，缩短了加工周期，降低了加工成本。
In order to improve the flow characteristics of the valveless piezoelectric pump and improve poor pump processing technology, a valveless piezoelectric pump with taper pipe slopes element was developed. First, the valveless piezoelectric pump with taper pipe slopes element was proposed and designed, and its working principle was analyzed. Meanwhile, Ansys software was used to simulate the flow fields of the pump. The simulation results show that the pump has a function of transmission fluid. Finally, a valveless piezoelectric pump with taper pipe slopes element was produced using 3D printing technology, and the relationships between flow rate and driving frequency were experimentally investigated. Test results show that when the driving frequency was 8 Hz, the flow rate of the valveless piezoelectric pump with taper pipe slopes element reached a maximum of 26.8 ml/min, which is 18.6% more than that of the same sized valveless piezoelectric pump with slopes element under the same driving voltage. The experimental results showed that the flow characteristics of the valveless piezoelectric pump with taper pipe slopes element were superior to the pump with a slopes element. Thus, the processing technology on valveless piezoelectric pump was improved, the processing cycle was shortened, and the processing costs were reduced using 3D printing technology.