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Axial Fan Working Principle

Jun 30, 2017

Ordinary axial fans can be used in general factories, Axial Fan warehouses, offices, residential and other places of ventilation, can also be used for chillers (air coolers), evaporators, condensers and other forced ventilation.

Anti-corrosion, explosion-proof axial fan with anti-corrosion materials and explosion-proof measures, and match the explosion-proof motor can be used for explosive, volatile, Axial Fan corrosive gas for general use of the premises ventilation equipment.

Require the axial flow of the fan should be no significant dust, no sticky and fiber material; motor direct-type temperature does not exceed 40 ℃, Axial Fan belt drive type temperature does not exceed 60 ℃.

Axial fan is mainly composed of impeller, housing, motor and other components, the use of steel and the stent duct connection. One of the anti-corrosion type axial fan impeller, Axial Fan the chassis are made of glass fiber reinforced plastic, Axial Fan other types of axial fans are generally made of steel.

working principle

When the impeller rotates, Axial Fan the gas enters the impeller from the air inlet in the axial direction, and the energy of the gas is raised by the pushing of the blade on the impeller and then flows into the guide vane. The guide vanes change the deflected airflow into axial flow and introduce the gas into the diffuser tube, further converting the kinetic energy of the gas into pressure energy, Axial Fan and finally introducing the working line.

Axial fan blades work in much the same way as aircraft wings. However, the latter is to lift the lift on the wing and support the weight of the aircraft, Axial Fan while the axial fan is fixed position and the air to move.

The cross-section of an axial fan is generally a wing profile. Axial Fan The blade may be fixed in position or rotatable about its longitudinal axis. The angle of the blade and the air flow or the spacing of the blades can be adjustable or adjustable. Changing the blade angle or spacing is one of the main advantages of axial fans. The small blade spacing angle produces a lower flow rate, while increasing the pitch can produce a higher flow rate.

The advanced axial fan can change the blade pitch (which is quite similar to the helicopter rotor) while the fan is running, thereby changing the flow accordingly. Axial Fan This is called an adjustable blade (VP) axial fan.


Axial fans, also known as local fans, is commonly used in industrial and mining enterprises a fan, but different from the general fan of its motor and fan are in a cylinder, Axial Fan the shape is a cylindrical, for local ventilation, easy installation, Ventilation effect is obvious, safe, you can connect the wind blower to the designated area.

When the axial fan is started, the motor current will be 5-6 times higher than the rated value, which will not only affect the service life of the motor but also consume more power. The system will have a certain margin in the design of the motor , The speed of the motor is fixed, Axial Fan but in the actual use of the process, sometimes to lower or higher speed operation, so the frequency conversion is very necessary. The inverter can realize the soft start of the motor, change the input voltage frequency of the equipment to achieve the purpose of energy saving and speed regulation, and can provide over-current, overvoltage and overload protection to the equipment.