Cool Cf1 / Dyson
The Cool CF1 is the current version of the fan that made Dyson's name: the bladeless ring of air. There are no spinning blades. A brushless DC motor draws air in at the base and pushes it through a thin slot inside the loop, and that fast jet drags the surrounding air along with it, amplifying the flow up to thirteen times into a smooth, continuous stream rather than the chopped pulse of a bladed fan. The absence of blades is the point: nothing to catch small fingers, no grille to dismantle, just a wipe of the ring to clean. A Helmholtz cavity quietens the motor, dropping it to a near-silent sleep mode, and it draws only 30 watts. It suits someone who wants safe, easily cleaned, draught-smooth cooling on a desk or bedside, and accepts a premium price for it.
Design intent
- +The bladeless loop is the whole idea: a hidden motor accelerates air through a thin annular slot, and that jet draws surrounding air along with it to multiply the flow up to thirteen times, producing a smooth, continuous stream instead of the buffeting pulse a spinning blade creates.
- +Removing the blades does double duty as safety and maintenance design: with nothing fast-moving exposed there is no hazard to small fingers and no grille to take apart, so cleaning is a single wipe of the ring.
The Cool CF1 is the current version of the fan that made Dyson's name: the bladeless ring of air. There are no spinning blades. A brushless DC motor draws air in at the base and pushes it through a thin slot inside the loop, and that fast jet drags the surrounding air along with it, amplifying the flow up to thirteen times into a smooth, continuous stream rather than the chopped pulse of a bladed fan. The absence of blades is the point: nothing to catch small fingers, no grille to dismantle, just a wipe of the ring to clean. A Helmholtz cavity quietens the motor, dropping it to a near-silent sleep mode, and it draws only 30 watts. It suits someone who wants safe, easily cleaned, draught-smooth cooling on a desk or bedside, and accepts a premium price for it.
Design intent
- +The bladeless loop is the whole idea: a hidden motor accelerates air through a thin annular slot, and that jet draws surrounding air along with it to multiply the flow up to thirteen times, producing a smooth, continuous stream instead of the buffeting pulse a spinning blade creates.
- +Removing the blades does double duty as safety and maintenance design: with nothing fast-moving exposed there is no hazard to small fingers and no grille to take apart, so cleaning is a single wipe of the ring.
Trade-offs
- -It is expensive for a personal fan, and like any fan it moves air rather than cooling it, so it relieves heat by airflow alone and does not lower the room's temperature the way an air conditioner would.
- -The glossy 360mm loop attracts dust and can crowd a small desk, and reviewers find the oscillation motor noticeably louder than the airflow itself and the remote short-ranged, small frictions against an otherwise refined object.
