How Does The Dyson Air Multiplier Work?
Dyson Air Multiplier fan – AM01 desk fan, 12 inch, available in Silver/Iron
The Dyson Air Multiplier fan delivers a constant stream of smooth air. No blades. No buffeting.
Conventional fans have blades, which chop the air before it hits you, causing unpleasant buffeting. The Dyson Air Multiplier fan has no blades. Instead, it uses Air Multiplier technology to amplify air 15 times, generating up to 450 litres of smooth, uninterrupted air every second. No blades. No buffeting.
The 12 inch Dyson Air Multiplier fan is available in Silver/Iron. The 10 inch model is available in White/Silver.
How it works
The air is multiplied 15 times giving a smooth, unbuffetted air flow. View larger
1) Up to 27 litres of air per second is drawn in by an energy efficient, brushless motor. A combination of the technologies used in turbochargers and jet engines generates a powerful flow of air.
2) Airflow is accelerated though an annular aperture. It passes over a 16 degree airfoil-shaped ramp, which channels its direction.
3) Air behind the Dyson Air Multiplier fan is drawn into the airflow, through a process known as inducement.
4) Air around the machine is also drawn into the airflow, through a process known as entrainment, amplifying it 15 times. The resulting airflow is smooth and constant, with no unpleasant buffeting.
Dyson Air Multiplier fan features
No blades so safe to use
Easy to clean
The blades on conventional fans cause unpleasant buffeting because they chop the air. Air Multiplier technology gives an uninterrupted stream of air.
There are no fast-spinning blades on the Dyson Air Multiplier fan, so it’s safe and doesn’t need to have a grille.
Easy to clean
Because there are no awkward grilles to disassemble and put back, the Dyson Air Multiplier fan is easy to clean. Just wipe the loop amplifier with a cloth.
Touch-tilt – pivots on its own centre of gravity
The motor is positioned in the base rather than at the top, which allows the Dyson Air Multiplier fan to pivot on its own centre of gravity for easy touch-tilt. So it’s not top-heavy and cumbersome like other fans.
Unlike conventional fans, which have a few settings to adjust power, the airflow generated by the Dyson Air Multiplier fan can be adjusted at the turn of a dial to deliver precisely the amount you want.
To oscillate a conventional fan you have to hold it steady, pull the toggle and watch it judder. The Dyson Air Multiplier fan oscillates 90º at the touch of a button.
2 year parts and labour guarantee
The Dyson Air Multiplier fans come with a 2 year parts and labour guarantee. And if you do need help or advice you can call Dyson’s award-winning customer service team for free. You’ll be put straight through to a Dyson expert.
Touch tilt control
The problem with conventional fans
Electric fans hadn’t changed much since they were invented in 1882. Grilles have been added. Materials are different. Buttons have popped up. But the fundamental problem remains the same – their blades chop the air. And choppy air causes annoying and uncomfortable buffeting. Take out the blades, and the buffeting stops. But how do you make a fan that works without blades?
How air behaves at high speed
Whilst developing the technology behind the Dyson Airblade hand dryer, Dyson engineers noticed how accelerating air at high speeds through a narrow aperture caused surrounding air to be drawn in. They realised that this phenomenon could be useful, particularly in a fan. After running hundreds of tests, they discovered the ideal ramp angle, aperture width and loop amplifier dimensions to develop a fan without blades.
To generate a jet of air powerful enough to work properly, the motor needed to be able to pull in more than 20 litres of air per second. To do this Dyson engineers designed a new type of 3-dimensional impeller with nine asymmetrically aligned fins, combining technologies found in jet engines and turbochargers.
To test airflow smoothness, Dyson engineers used a technique called Laser Doppler Anemometry. Millions of tiny particles were injected into the airflow to make flow patterns visible to laser technology. Four lasers were used to track the speed and direction of the particles, taking up to 2,000 measurements per second. Four million velocity measurements allowed fluid dynamics engineers to create a detailed map of the airflow.
One engineer had the original idea, but it took every discipline from Dyson’s 350-strong team of engineers and scientists to develop Air Multiplier technology.
How AM01 12 inch compares to AM01 10 inch:
|AM01 12 inch|
Size of fan: 12 inches
Total height: 547 mm
|AM01 10 inch|
Size of fan: 10 inches
Total height: 496 mm