Axial Fan Classification

There are two types of fans: axial flow and radial flow, which are divided according to the direction of air flow when the fan is working. When the axial flow fan is working, the blades push the air to flow in the same direction as the axis, so it is called an axial flow fan; when the radial flow fan is working, the blades push the air to flow in a direction perpendicular to the axis (i.e. radial), so it is called a radial flow fan.
Axial flow fans are divided into large axial flow fans, medium axial flow fans, and small axial flow fans. Choose the appropriate axial flow fan according to the required place of use.
Generally speaking, large axial flow fans are mainly suitable for exhaust in places such as dust and gravel fields; medium axial flow fans are mainly suitable for indoor ventilation and heat dissipation, such as granaries; small axial flow fans are mainly suitable for ventilation and heat dissipation of mechanical equipment, such as electrical cabinets.
Because the wind pressure of traditional turbo fans is not generated in the central part of the fan, but by the rotation of the fan blades. Therefore, no matter how high the speed is, there will be no wind blowing down below the axis. But under the fan axis is the heat core, which is the main source of heat. This situation caused the inherent defect of the traditional axial flow fan: the airflow cannot reach the central part smoothly due to the obstruction of the motor, resulting in a "blind spot". The existence of the blind spot causes the core part of the radiator to be too hot, affecting the overall heat dissipation effect. To solve this problem, the centrifugal radial flow fan was invented.