Points to note in the volute fluid design of the external rotor single-inlet centrifugal fan - From SunxFan

In the fan fluid design, in order to achieve the best balance design of noise, air volume and pressure, engineers need to accumulate experience continuously. We focus on several key points:

The design of the volute tongue is very important; many people do not understand this key point

The ratio of the center distances of the involute should pay attention to the relationship with the center point of the motor

The relationship between the air inlet and the impeller guide angle

Snail tongue pressure

CAE

SunxFan_CFD

SunxFan_Spiral shell design reference picture

Overall: From the parameters in the figure above, you can basically grasp the relevant design essentials. The remaining volute dimensions can refer to the above schematic diagram. If you have any questions, please contact SunxFan_Shunxuanfan.