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前言国内矿井轴流式通风机的扩散器均是采用苏式60度扩散器,都选用片式阻性消声结构,与德国立式扩散塔选用的扩散器内筒(芯筒)、弯道导叶、扩散器外筒和扩散塔的周边消声结构相比较,其动压损失大,通风阻力也大。在选用消声结构的同时,必须考虑消声结构对空气动力性能的影响,以免降低通风机的效能。因此,我们设计和选用轴流式通风机的消声结构时,必须要考虑经济合理,消声效果好的
Preface The domestic mine shaft fan diffuser are used in the Soviet-style 60-degree diffusers, are selected chip resistive muffler structure, with the German vertical diffusion diffuser tower (core barrel), the curve Vane, diffuser outer diffuser and the surrounding structure of the muffler compared to its dynamic pressure loss, ventilation resistance is also large. In the selection of muffler structure, we must consider the structure of the muffler aerodynamic performance, so as not to reduce the effectiveness of the ventilator. Therefore, when we design and select the muffler structure of the axial fan, we must consider the economic and reasonable, good sound-absorbing effect