Roof fan application in natural environment:

Roof fans are installed on the roof to carry out ventilation of the exhaust system, as the diversity of natural environments determines the material and construction characteristics of the fan application.

The equipment for preventing gas backflow after the roof fan is set to shut down, due to the high-speed operation of the fan under the pressure effect, the wind speed inside the blowing cylinder increases significantly, and the fan reversal is not good for the motor starting, which will be damaged due to excessive starting current.

When designing a rooftop fan, it should have reliable waterproof, rainproof, snow proof, and sand proof characteristics. Unlike precipitation, wind, snow, and sandstorms not only enter the fan from the top, but also from the bottom when the outdoor wind speed exceeds the specified compressive strength.