几种防灰结构消声元件性能参数的试验研究

介绍一种阻性和抗性组合式消声箱的试验，通过不同结构的组合几种防灰结构消声元件的性能参数进行试验研究。结果表明，防灰结构消声器的经验设计法是可行的，通流断面的变化对消声器的压力损失影响较大。

Experiment on the Property Parameters of Severa Dirt-proof Silencer Elements

A sound attenator case of absorption and impedance compound was introduced, and then the experiment on the parameters of the dirt-proof silencer elements were studied by constituting the different structural element. The results showed that the traditional method was practicable to design a dirt-proof silencer, and that the pressure loss of the silencer was greatly influenced by changing the structure section.