Abstract:

Analyze of the FBD series flameproof push-rotating axial local fan noise generation mechanism and original noise reduction measures, mainly based on the rotating axial fan noise sources and noise frequency characteristics, in as much as possible change the installation dimensions and structural design of the premise, put forward a new local fan noise reduction scheme, after a large number of experimental studies, by using the side air intake inlet structure design, changing the inlet line, and achieved good results, fans imports more than 15 dB noise reduction.