降低通风机空气动力噪声的方法

Reduction Methods of Air-flow Noise for Blower

通风机空气动力噪声强度大是通风机噪声的主要部分,且不易控制。分析了通风机空气动力噪声产生的机理,提出通过优化风机的蜗舌间隙、蜗舌半径以及叶道出口涡流区相对宽度等关键结构参数降低噪声的方法。

The aerodynamic noise strength of the centrifugal blower is bigger, and it is the main block in the centrifugal blower noise, and don＇t easy to control. Mechanism of centrifugal blower creating aerodynamic noise is analyzed, and the methods for noise reduction by optimizing structure parameters such as volute throat gap, volute throat radial and relative width of swirl regions in exit blade channel are put forward.