The characteristics of variable frequency heat sink fan the air velocity of the variable frequency heat sink fan is larger than that of the backward inclined blade, so the kinetic energy of the air flow is converted into pressure energy in the shell spiral chamber, and the absolute velocity of the backward inclined blade to the air flow is smaller, as a result, the flow loss is small at the rotational speed of energy, so the proportion of the static head used to overcome the resistance of the system is large.

 The efficiency of frequency converter cooling fan has a direct influence on the power of fan shaft, the efficiency of Fan with backward blades is high, the shaft power required by fan is small, the energy consumption point is small, the efficiency of Fan with forward blades is low, and the shaft power required by fan is large, that's a lot of power. Because the absolute velocity from the forward-inclined Blade to the air flow is greater than that from the backward-inclined Blade, the air flow loses more when energy is transferred, the speed of the air flow colliding with the casing is also greater, and the curvature of the backward-inclined blade channel is smooth, the air flow is also relatively smooth. Therefore, the noise of the forward-inclined Blade Fan is greater than that of the backward-inclined Blade Fan. 

The above is Dong Xing Yue on the Frequency Conversion Fan's characteristic brief introduction, when choosing the frequency conversion fan, chooses has the safeguard factory, has the quality and the after-sale safeguard, a good frequency conversion fan decides the equipment normal operation, it can also extend the service life and increase the working efficiency, if you want to know more about the cooling fan, you can pay attention to our http://www.dxymotors.com。