What are the differences between axial fans and centrifugal fans?
The main difference between centrifugal fans and axial fans is that:1. The centrifugal fan changes the flow direction of the medium in the air duct, while the axial fan does not change the flow direction of the medium in the air duct;2, the former installation is more complex3, the former motor and fan are generally connected through the shaft, the latter motor generally in the fan;
The curved plate blade is welded to the conical steel hub. Change the flow by changing the angle of the blade in the upper inlet housing of the impeller.The casing can have an open entrance, but more commonly, it has a right angled bend to allow the motor to be placed outside the pipe. The excretory shell expands slowly to slow down the flow of air or gas and converts kinetic energy into useful static pressure.The role of axial fans and centrifugal fans in mechanical ventilation1, because the temperature and grain temperature difference is great, the first ventilation time should be chosen during the day, in order to reduce the gap between grain temperature and temperature, and reduce the occurrence of condensation. After the ventilation as far as possible in the evening, because the ventilation is to cool at night, humidity is relatively high, low temperature, so that reduce the water loss, and make full use of the night temperature, improve the cooling effect.2 centrifugal fan for ventilation early there may be a door and window and wall condensation, even slight condensation of surface grain surface, as long as the wind stop machine, open the window, open the axial fan, if necessary, changes the grain surface, the positions within the hot air outside the warehouse can be excluded. When the axial fan is used for the slow ventilation, there will be no condensation. Only the upper and middle grain temperature will rise slowly, and the grain temperature will decrease steadily as the ventilation continues.
4, the former is often installed in the air conditioning unit inlet and outlet, boiler drum, fan, and so on. The latter is usually installed in the middle of the air duct or the front end of the air duct.In addition, there is a diagonal (mixed flow) fan, the wind pressure coefficient is higher than the axial fan, and the flow coefficient is larger than the centrifugal fan.Fill the gaps between the axial flow fan and centrifugal fan. Meanwhile, the utility model has the characteristics of simple and convenient installation.The mixed flow (or axial thrust) fan combines the characteristics of axial and centrifugal fans, although it looks more like a conventional axial fan.
