The working principle of the axial fan: When the leaf wheels are rotated, the gas enters the impeller from the axial direction of the air inlet, driven by the blades on the impeller, increases the energy of the gas, and then flows into the guide leaves. At the same time, the gas is introduced into the transpressor, and the transposer further converts the kinetic energy of the gas into a pressure energy. The working principle of the blade of the shaft fan is similar to the aircraft wing. The role of the aircraft is supported, and the axial flow fan is fixed and the air is moved.