Dyson Air Multiplier™ fans work differently from conventional fans. They use Air Multiplier™ technology to draw in air and amplify it – from 15 to 18 times, depending on the model. With no blades or grille, they’re safe and easy to clean. And they produce an uninterrupted stream of smooth air, with no unpleasant buffeting.
Air is drawn into the base of the machine. The air is forced up into the loop amplifier and accelerated through the 1.3mm annular aperture, creating a jet of air that hugs the airfoil-shaped ramp. While exiting the loop amplifier, the jet pulls air from behind the fan into the airflow (inducement). At the same time, the surrounding air from the front and sides of the machine are forced into the air stream (entrainment), amplifying it 15 times. The result is a constant uninterrupted flow of cooling air.
It’s just that these blades are inside the lower canister, rather similar to, dare we say it, how a vacuum cleaner is set up, with the air then routed through the ring up top. The benefits of this tech are that there are no nasty blades to get fingers caught up in, but also that there’s no “buffeting” — that on-off gush of air caused by fan blades unceremoniously chopping up the air into inelegant segments