微型动态被动阀效率分析及其优化设计

Efficiency Analysis and Optimal Design of a Micro Dynamic Passive Valve

为提高现有三角结构微型动态被动阀的效率,先对动态被动阀效率表达式进行了研究,得出其效率取决于流体逆、正向损失系数比的结论,而后基于这一结论建立了一种优化模型,并与普通三角结构进行了效率比较。数值计算与对比实验的结果表明,优化模型的效率提高到三角结构的两倍。

To improve a micro dynamic passive valve, we study its efficiency equation and conclude that its efficiency is determined by the loss coefficient ratio between positive direction flow and negative direction flow of the liquid inside the pumps. The bigger the ratio, the more efficient the pump is. Based on the conclusion, we establish an optimization model of the micro dynamic passive valve to raise the ratio. Then we compare the efficiency of the optimization model with that of the existing micro dynamic passive valve of triangle shape. The numerical calcu- lation and comparative experiment indicate that the optimization model reduces the pressure loss of positive direction flow and enhances the efficiency as twice as that of the micro dynamic passive of triangle shape.