Our attention to the credibility of axial fan size, to ensure product quality axial fans, focusing on small profits, rapid delivery, and after-sales service system when moving, increase the distance between the vanes 220 axial fans, bit stream Interference When the impact of reducing the ratio of the speed of change in the wake of faster blade acts as a sound barrier also decreases with increasing distance. Thus, at least three parameters that affect the size of the interference noise: blade shape velocity waveform (ie blade loading), leaf blades radiating surface distance between the columns and as a sound source. Very small pitch may have two acoustic impact. If the vanes on the rotor blades interference field force established to make the rotor blades into a pulsating sound source, while the leaves are still sound barrier. Axial fan specifications, axial fans, ventilation equipment from Plumper Plumper Shandong Dezhou ventilation plant. Dezhou Plumper ventilation plant (www.frtfsb.com) (www.frtfsb.com) strong, credible, in Dezhou fan, ventilation equipment industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Plumper ventilation equipment into the brilliant and you work for a better future!