toopy
Club Member
I think that’s the most efficient design for a ‘forward curve’ centrifugal fan of this type, the air is pulled in axially and flung out tangientally. I think it’s a fan design that’s delivers a very high flowrate for a given size. Try googling ‘forward curve fan’. We have massive versions at work for building ventilation.
Thanks for that, like i said, happy to be corrected
https://www.rs-online.com/designspark/fan-types-why-choose-a-forward-curved-centrifugal-fan
So the fans don't so much cut through the air, but rather they scoop it up and throw it out!