The Main Difference Between Centrifugal Fans And Axial Fans

1. The centrifugal fan changes the flow direction of the medium in the air duct, while the axial flow fan does not change the flow direction of the medium in the air duct;
2. The former is more complicated to install;
3. The former motor and fan are generally connected by a belt-driven rotating wheel, while the latter motor is generally inside the fan;
4. The former is often installed at the inlet and outlet of the air conditioning unit, boiler blower, induced draft fan, etc. The latter is often installed in the air duct or at the front end of the air duct outlet.
In addition, there are oblique flow (mixed flow) fans, which have a higher wind pressure coefficient than axial flow fans and a larger flow coefficient than centrifugal fans. It fills the gap between axial flow fans and centrifugal fans. At the same time, it has the characteristics of simple and convenient installation. The mixed flow (or axial impingement) fan combines the characteristics of axial flow and centrifugal fans, although it looks more like a traditional axial flow fan. It has curved plate blades welded to a conical steel hub. The flow rate is varied by changing the angle of the blades in the inlet casing upstream of the impeller. The casing can have an open inlet, but more commonly it has a right-angle bend so that the motor can be placed outside the duct.