A fan designed by engineers at Stafford-based Axair makes use of a blade technology which, says the company, is 5dBa quieter and 20% more efficient than its competitors.
Running at 900rpm and delivering 1600m3/hr, the TurboFlo backward curved fan uses 13 blades on a non-repeating space pattern. Each blade has a different length, angle and area – a configuration which, claims Axair, banishes resonant frequencies at any operational speed.
The inside of the fan is also designed to reduce noise by ensuring an uninterrupted air path and thus avoiding sudden changes of air direction. Both blades and hub are moulded as one piece in glass-reinforced ABS.