Backward-curved blades, as in Figure 3( b) , curve against the direction of the fan wheel' s rotation. Smaller blowers may have backward-inclined blades, which are straight, not curved. Larger....
Specialized in Industrial Fan, Exhaust Fan, Axial Fan, Ceiling Duct, Centrifugal inline, Centrifugal Fan & Blower, for Brand CKE, Spectek.
Forward curved impeller fans with their motors out of the airstream are suitable for a wide range of general medium pressure and ducted applications. Whilst multi-vane impellers are for clean air, ....