Difference between axial flow fan and centrifugal fan
axial flow fan is characterized by the flow of the fluid along the axial direction of the fan blade. For example, fans and fans in the home. And the centrifugal type is the fluid from the axial suction of the fan after the use of centrifugal force will flow from the circumferential direction of the fluid, such as air blower, smoke hood.
Axial flow fan: flow, pressure.
Centrifugal fan: pressure, flow is small.
The direction of the flow direction of the axial flow fan is vertical and the rotating direction of the blades, and the flow direction of the centrifugal fan is cut in the direction of the blade rotation.
What form of wind turbine is the most important consideration of the flow and system resistance loss
Centrifugal fan with the axial flow fan, the biggest disadvantage is that the size of the large, precisely because of the different structure, in the same wind, the same wind pressure, the centrifugal fan power consumption than the axial flow fan, but the noise will be relatively small, so the axial flow fan used in the fire and ventilation, the use of wind turbine. In the hotel class of high-grade buildings, many of the requirements of the use of centrifugal fans
Axial flow, which is the same as the direction of the wind vane. Centrifugal force to throw the air out of the air.
The direction of the wind and the axis is parallel to the axial flow fan, (for example, the fire smoke exhaust fan) on the contrary is the centrifugal fan, (fan coil).
Axial flow fan and centrifugal fan cabinet the fundamental differences in the mechanical structure of the wind turbine:
The blade diameter of the axial flow fan is confined to the diameter of the shell,
And centrifugal fan is not the limitations, the blade forward curved or inclined blade, the wind quantity and the wind pressure is required to adapt to a wider. And the cabinet can do the noise elimination processing, the noise index has a very clear advantage.
Due to the general low speed by a motor, motor power, power consumption is much more. If the usual ventilation system as far as possible the use of centrifugal fan cabinet, fire smoke is not commonly used system using high temperature axial flow fan is more economic and reasonable!
Centrifugal fan than that of axial flow fan in the large flow and high pressure of portfolio selection has more advantages (mainly wind turbine efficiency and noise index)
The difference between centrifugal fan and axial flow fan:
1, the centrifugal fan has changed the flow of the medium in the air, and the axial flow fan does not change the flow of the media in the air duct;
2, the former air and wind pressure are great, the latter is very low and the wind pressure;
3, the former is more complex, the latter is more simple installation;
4, the former motor and the fan are generally connected by shaft, which is generally in the wind turbine;
5, the former is often installed in the air conditioning unit into the outlet, the boiler drum, lead fans, and so on, the latter is often installed in the wind pipe, or the outlet of the wind pipe.
Source: China environmental protection online
