【摘要】 介绍了收缩管 /扩张管型无阀压电泵的一种典型结构 ,分别分析了收缩管和扩张管管内流动特性 ,认为收缩管 /扩张管在无阀压电泵中起动态阀的作用 ,其主要结构参数有锥形角和扩散比等 ,这些参数对泵的性能起决定性的影响。推导了此类无阀压电泵的流量计算公式及效率公式。更多还原

【Abstract】 This paper introduced a typical structure of a diffuser/nozzle based valveless piezoelectric pump,and analyzed the flow characteristics in the diffuser and nozzle respectively.Diffuser/nozzle acted asa dynamic valve in the pump;its important structure parameters are cone angle and diffusion ratio,they have key influence on the pump performance.Some formulae for volume flow and efficiency of the pump are derived.更多还原