低噪声通风机设计方法研究

本文阐述了风机噪声产生的原因,着重对空气动力噪声进行了机理分析。以此为根据,作者在风机设计与研究中,采用了航空上的一些先进技术,并提出了一些切实可行的降噪方法,其中有的已通过实验验证,具有良好的降噪效果。文中着重分析了风机叶片叶型对噪声的影响,并根据理论分析和实验结果,找到了精选低噪声风机叶片的主要原则。

An Investigation of the Design of Low-Noise Ventilators

In this paper the generation of ventilator noise is analysized arid the aerodynamic noise, the principlal one for ventilators is Stressed upon. Based on the analysis of the noise mechanism, the authors adopted some advanced technology from the aeronautics field into the design and development of ventilators, and put forward realistic methods for noise reduction, of which some had been verified to be very effective. The essentials for choosing ventilator blade airfolls according to the theoretical analysis and experiments of the effect of airfoils on aerodynamic noise are also given.