子午加速式通风机采用串列后导叶的实验研究

Experiment and Research on Meridian Accelerated Speed Type Ventilation Fan with Series Arrangement Rear Blade

本文分析了子午加速通风机未能大量推广使用的原因,提出来采用串列后导叶代替单列后导叶的办法及简单的设计计算方法。

It is a first time to made a series arrangement blade design to the rear blede of a meridian acclerated speed type ventilation fan. It also provides a simple and reliable calculation method for the design of a series arrangement rear blade. In a comparasion with tests of an equivalent signle arrangement rear blade, it has shown the application of series arrangement blade to the rear blade of meridian accelerated speed vantilation fan could increase the static pressure and efficiency of an ventilation fan. It also can increase the ventialtion distance and keep its normal noise level.