exhalation valve

Method The static model of the exhalation valve and control equation of flowfield were coupling solved .

方法采用呼气活门静态特性方程与流场控制方程耦合求解的方法，计算加压供氧面罩呼气活门的呼气阻力。

Objective To find out the reason of " dithering " of exhalation valve plate in pressure oxygen mask under high overpressure condition .

目的找出加压供氧面罩呼气活门的活门板在高余压状态下发生抖动的原因。