Kunshan Shengtang Ventilation introduction: What are the differences between centrifugal fans and axial fans?

Centrifugal fans and axial fans are two different types of fans, their working principles and structural characteristics are very different. The details are as follows:

1. Different working principles; The working principle of the centrifugal fan is to inhale the gas into the machine, generate centrifugal force through the high-speed rotation of the moving parts (such as impeller, tunnel, etc.), and bring the gas out of the fan to achieve the process of increasing the pressure of the gas and changing the flow rate.

The working principle of the axial flow fan is to inhale the gas along the axis of the machine, generate a force to push the gas through the rotation of the moving parts (such as blades and guide blades), push the air along the axis, and achieve the process of increasing the pressure of the gas and changing the flow rate.

2. Different air flow modes; The wind generated by the centrifugal fan is spread in an arc along the direction of centrifugal force, which is a centrifugal air flow mode. The air flow of centrifugal fans is usually characterized by high pressure and low flow, which is suitable for applications requiring high pressure, such as ventilation and air conditioning systems.

The wind generated by the axial flow fan is propelled along the axial direction, which is an axial air flow mode. The air flow of axial flow fans is usually characterized by low pressure and high flow rate, which is suitable for applications requiring large flow rate, such as smoke exhaust and auxiliary ventilation.

3. Different structural characteristics; The blade of the centrifugal fan is usually curved or beveled shape, and the number of blades is small. Due to the need for strong support for high-speed rotation, it usually has a heavy metal shell, and the impeller may also increase the support structure such as the bearing rod.

Axial fan blades are usually flat or flying wing shape, the number of blades is more, because the rotation speed is lower than that of centrifugal fans, so the structure is simple, the shell is lighter, and it is suitable for occasions where the installation cost is relatively low.

In summary, the difference between centrifugal fans and axial fans mainly lies in the working principle and air flow