The fundamental difference between the axial flow fan and centrifugal fan
Hbzhan content introduction: characteristics of axial flow fan is a fluid along the axial flow fan. For example, exhaust fan, electric fan and family. The centrifugal fan is a fluid from the axial suction after the use of centrifugal force will be thrown from the circumferential direction of fluid, such as air blower, the lampblack of axial flow fan: flow, pressure head is small. Centrifugal fan: pressure head, the flow of small.
Rotation direction perpendicular to the airflow direction vane axial fan, airflow direction of centrifugal fan blade cut in the direction of rotation. The main air blower selects what form is to consider the resistance loss of flow and system.
Centrifugal fan with an axial flow fan, the biggest drawback is the large volume, because of difference in structure, in the same volume, the same air pressure, power consumption of centrifugal fan to fan much larger than the shaft, but the noise will be relatively small, so the axial flow fan used in fire ventilation, multiple selection of centrifugal fan usually use.
In the hotel of high-grade buildings, many requests to give priority to the use of centrifugal fan flow, air and fan shaft in the same direction. Centrifugal, by centrifugal force to flow out.
The wind direction and parallel to the axis is called axial flow fan (such as fire, smoke exhaust fan) or centrifugal fan (fan, than the wind machine coil)
The fundamental difference between the axial flow fan and centrifugal fan cabinet in the machinery structure Fan: blade diameter axial-flow fan is confined to the outer diameter,
The centrifugal fan is not the limit, can use the blade forward or backward blade, the wind pressure to adapt to the requirements of a broader. But the cabinet can do the noise elimination, there are obvious advantages in noise index.
Due to the general low by motor speed, motor power, power consumption is much more. If the common 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
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