Centrifugal fan: large head and small flow. The flow direction of axial fan is perpendicular to the rotating direction of blade, and the flow direction of centrifugal fan is tangent to the rotating direction of blade. The most important thing to choose is to consider the flow rate and system resistance loss. The axial flow fan is characterized by the axial flow of fluid along the fan blade. For example, fans and household exhaust fans. The centrifugal type is the axial suction of fluid from the fan after the use of centrifugal force will be the fluid from the circumferential direction to throw out, such as blowers, smoke pumping machines.
The biggest disadvantage of centrifugal fans is that they are bulky compared with axial-flow fans. Because of their different structures, centrifugal fans consume much more electricity than axial-flow fans under the same air volume and pressure, but the noise will be relatively small. Therefore, axial-flow fans are often used in fire fighting and ventilation. Centrifugal fans are selected. Ting Da import bearing Miss Wang in the high-grade hotel buildings, many require the priority use of centrifugal fan.
Axial flow is the same direction as the axis of the blade. Centrifugation, the air is thrown out by centrifugal force.
The flow direction of the wind is parallel to the axis is called axial fan (such as fire exhaust fan) and vice versa is centrifugal fan (such as fan coil fan).
The fundamental difference between axial fan and cabinet centrifugal fan is in the mechanical structure of the fan.
Axial fan blade diameter is limited to the diameter of the shell, and centrifugal fan has no limitations in this respect, can be used blade tilt forward or backward blade, wind pressure requirements to adapt to a wider range. Moreover, the cabinet can make noise reduction, and has obvious advantages in noise indicators. Ding Da import bearing Miss Wang
Generally speaking, the number of motors is low, the power of the motor is large, and the power consumption is much more. If the usual ventilation system, try to use cabinet centrifugal fan, fire smoke exhaust system is not commonly used, the use of high-temperature axial fan is more economical and reasonable!
Centrifugal fans have more advantages than axial flow fans in the selection of combination of high wind volume and high wind pressure (mainly refers to fan efficiency and noise index)!
The difference between centrifugal fan and axial fan is that:
1. The centrifugal fan changes the flow direction of the medium in the duct, while the axial fan does not change the flow direction of the medium in the duct.
2, the former has great air volume and wind pressure, and the latter has low air volume and wind pressure.
3, the former installation is more complex, and the latter is simpler to install.
4, the former motor and fan are usually connected by shaft, and the latter motor is usually in the fan.
5. The former is often installed at the inlet and outlet of air-conditioning units, boiler drum, induced draft fan, etc. The latter is often installed in the air duct, or the front end of the air duct outlet.
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