Structural composition:

(1) Impeller: Impeller is the core part of axial flow fan, which consists of blades and hubs. The blades are usually forward curved, backward curved or radial, and the materials are steel, aluminum alloy, glass fiber reinforced plastic and so on.

(2) Enclosure: The enclosure is used to fix the impeller and the motor, and it also plays a protective role. Shell materials are steel, glass fiber reinforced plastic, plastic and so on.

(3) Air inlet: The air inlet is located in front of the impeller and used to guide gas into the impeller.

(4) Motor: The motor is the power source of the axial flow fan and drives the impeller to rotate.

 Classification of axial flow fans:

(1) Forward bending type: the blade inlet angle is greater than 90 degrees, and the air volume is large, but the efficiency is low, so it is suitable for places with high air volume requirements.

(2) Backward bending type: the blade inlet angle is less than 90 degrees, which has high efficiency, but the air volume is relatively small, so it is suitable for places with high wind pressure requirements.

(3) Radial type: the blade inlet angle is equal to 90 degrees, which is between the forward bending type and the backward bending type, and is suitable for general ventilation places.

 Features:

(1) Simple structure: the axial fan has compact structure, convenient installation and small floor space.

(2) Large air volume: the axial fan has a large air volume and is suitable for ventilation in large places.

(3) Low noise: made of high-quality materials, with low noise.

(4) High efficiency: the impeller of the axial flow fan is consistent with the gas flow direction, which reduces the gas flow loss and improves the efficiency.