Centrifugal fans are used more and more in production and life, and at the same time they have become an indispensable mechanical device. So what roles can centrifugal fans play in various applications?
1)The main function of centrifugal fan
1. Ventilation and ventilation
Centrifugal fans are widely used in boilers and industrial furnaces, mainly for ventilation and drafting. In the application, they can ensure the environment of the boiler room or industrial furnace, and also allow the replacement of oxygen-enriched air, so as to increase the firepower of the boiler or furnace. More violently, it can effectively save coal and other power resources and reduce production costs.
2. Dry air
Setting centrifugal fans in factories, warehouses and other production workshops can play a role in ventilation, ensuring fresh air in the space, and at the same time drying the air, ensuring that equipment and other industrial products maintain the original quality.
3. Dust emission
Set in mines and tunnels to ensure air circulation, have the effect of dust emission, ensure air transparency, and ensure the health of workers in mine tunnels.
4. Cooling
Setting a centrifugal fan in the cooling tower can not only play the role of ventilation, but also ensure the normal operation of the cooling tower, and the large flow of wind generated by the centrifugal fan can also play a good cooling effect.
5. Ventilation and cooling
Centrifugal fans can also be seen in household air conditioners. They can play the role of ventilation and heat dissipation, circulate the air and keep the indoor air dry, thereby reducing the incidence of colds, respiratory diseases and other diseases.
2) Working principle of centrifugal fan
The centrifugal fan is based on the principle of converting kinetic energy into potential energy, using a high-speed rotating impeller to accelerate the gas, then decelerate, change the flow direction, and convert the kinetic energy into potential energy (pressure). In a single-stage centrifugal fan, the gas enters the impeller from the axial direction, the gas changes to the radial direction as it flows through the impeller, and then enters the diffuser. In the diffuser, the gas changes the direction of flow and the increase in the cross-sectional area of the duct slows down the gas flow, which converts kinetic energy into pressure energy. The pressure increase occurs mainly in the impeller, and secondly in the diffusion process. In a multi-stage centrifugal fan, a recirculator is used to move the airflow to the next impeller, creating a higher pressure.
After the above introduction, it can be seen that the function of the centrifugal fan mainly includes ventilation and induced air, dry air, dust discharge, cooling, etc., and it mainly operates according to the working principle of converting kinetic energy into potential energy.
