“MFI” “backward Inclined centrifugal Fans (BICF) are designed for Industrial Applications in which the fan delivers air containing corrosive fumes or light,erosive dust particles.
A Backward Inclined flat bladed wheel is used in this type of fan.
This wheel has heavier blades and greater resistance to erosion and corrosion-hence provides minimum maintenance under these contaminated air conditions.
BACKWARD INCLINED WHEEL
Backwardly inclined, thick, single sheet high strength steel blades continuously welded to a streamlined wheel cone and heavy steel backplate.
The wheel has a true non-overloading horsepower characteristic, mechanical efficiency over 80%, and steep, stable pressure curve.
PRESSURES TO 14 INCHES WG
Pressure from ½ to 14 inches in volumes up to 118,000CFM and temperatures to 800 F.
STEEP PRESSURE CHARACTERISTICS
So steep that if the original estimate of the system resistance was 30% low, the Backward Inclined Fan would deliver at least 90% of the original design.
The fan, with its high efficiency, uses far less horsepower than radial blades fans.
This permits smaller motor requirements and result in less power consumption.
The motor can be sized for the operating horse power of the fan and not over sized, thus increasing motor efficiency.
Fan speed with this type is 8% lower than with the airfoil wheel further reducing maintenance.