In life, we often suffer from the noise of the cooling fan, which adversely affects the quality of our lives and work. The noise of the cooling fan is a very headache. We usually use the cooling axial fan mainly for It can achieve a good ventilation effect. However, while the cooling fan brings us good heat dissipation, it also brings us annoying noise. So how do we deal with this situation? Can it be the best of both worlds?

If you want to know the solution of the axial fan noise, then we must first understand how the noise of the cooling fan is generated in use. The impeller is the most important component of the fan. It will also bring some problems when it plays its role. A good phenomenon is the appearance of noise. When the impeller rotates at high speed and low load, there will be obvious noise, usually called discrete noise. Discrete noise is due to the structure around the blade and the rotation of the blade mouth design test. The noise generated by the interaction of the formed uneven flow field, the interference noise of the intake air before the air inlet due to the presence of the leading blade or the metal mesh cover. Rotational frequency noise generated by blades in a non-smooth or asymmetric casing. Because the noise generated by the impeller itself cannot be completely solved for the user, because the fan always encounters some air resistance during use, these resistances themselves will produce a certain amount of noise.

Vortex noise is a typical type in the fan industry. The turbulence noise is generated when the airflow with a certain turbulence degree flows to the blade. The airflow flows through the turbulent boundary layer noise generated by the pulsating turbulent boundary layer on the blade surface. The vortex noise caused by the off-body vortex caused by the turbulent adhering layer of the blade surface falling off the blade trailing edge. These kinds of noises are difficult to solve, and users need to master some skills. From the perspective of the use of fans, we can't ignore some of the effects of noise while paying attention to the efficiency of fan use. Solving the noise problem is also a new requirement put forward by users in many places.