【摘要】 以BKJ型轴流式局部通风机为研究对象 ,采用减小动叶与机壳间隙和在局扇进口加由玻璃钢材料制作的微穿孔板消声器方法 ,对其实施降噪研究 ,使局扇噪声从 99dB(A)降低到 84dB(A)。更多还原

【Abstract】 Having analysed the noise mechanism reduced by BKJ mining partial fans,this paper applies the methods by reducing the tip gap between rotor_blades and case and equipping the silencer made by glass fibre reinforced plastic in the inlet of the fan to reduce noise.The results of experiments show that the noise can be reduced from 99 dB(A) to 84 dB(A).更多还原