How to deal with axial fan noise?
This reduces the separation zone of the blade exit section, the eddy current intensity and size of the separation zone, and the noise decreases.
For the noise generated by the impeller, usually through the blade perforation approach to reduce noise, with the perforation method, you can make part of the air flow through the blade high pressure surface to the leaves low pressure surface, can promote the leaf separation point to move below the flow
The turbulence of the fan in operation will also produce a part of the noise, eddy current noise is mainly due to a certain turbulence flow of gas flow to the blade when the flow turbulence noise. Airflow through the blade surface due to pulsating turbulent surface layer of turbulence generated boundary layer noise and some other reasons.
The impeller is an integral part of every type of fan that can not be left, and it produces very noticeable noise at high speeds and low loads. This noise is mainly due to the rotation of the blade around the blade and the design of the blade Uneven flow of the interaction caused by the noise. This is just one of the reasons
Speaking of noise solutions, we must first find the cause of noise, fan noise may be caused by many reasons, here are a few of the most common reasons.
