Air Multiplier by Dyson


Industrial designer James Dyson has launched a fan with no blades. Update: this project is included in Dezeen Book of Ideas, which is on sale now for £12.

The motor is positioned in the product's base.

Air is passed through a ring-shaped aperture in the rim of the top section and travels through the loop over an aerofoil.


Click for larger image

The fan produces an even flow of air, controlled by a continuous dimmer switch.

Watch a movie about the design here.

Here's some more information from Dyson:


Say goodbye to the blade
No blades. No buffeting.

Chop, chop. The blades on conventional electric fans literally chop the air, which means the airflow is uneven, causing unpleasant buffeting.

The Dyson Air Multiplier™ fan has no blades. Instead it uses Air Multiplier™ technology to amplify air 15 times, expelling 405 litres of cool, smooth and uninterrupted air every second.

Air is accelerated through an annular aperture set within the loop amplifier. This creates a jet of air which passes over an airfoil-shaped ramp that channels its direction. Surrounding air is drawn into the airflow (this is called inducement and entrainment).

Dyson’s fluid dynamics engineers ran hundreds of simulations to measure and map airflow – allowing them to precisely optimise how the Dyson Air Multiplier™ fan works.

The Dyson Air Multiplier™ fan is powered by an efficient brushless motor and air speed can be precisely adjusted with dimmer-switch control. Fans with blades are only wired to run at just two or three settings.

No blades means no need for a grille; so it’s safe and simple to clean.

And because its motor is at its base, the Dyson Air Multiplier™ fan can be tilted with a touch, unlike a conventional top-heavy fan, which needs to be positioned with two hands and can topple easily.

James Dyson says

“I’ve always been disappointed by fans. Their spinning blades chop up the airflow, causing annoying buffeting. They’re hard to clean. And children always want to poke their fingers through the grille. So we’ve developed a new type of fan that doesn’t use blades.”

Dyson Air Multiplier™ fan: the facts

No buffeting

The blades on conventional fans cause unpleasant buffeting because they chop the air. Air Multiplier™ technology gives an uninterrupted stream of air that doesn’t distract or buffet you.


With its simple loop the Dyson Air Multiplier™ fan is quickly wiped clean with a cloth. Fans with blades are nigh on impossible to clean, with dust and dirt building up inside the cage. The same dust and dirt is then billowed into your face when the fan is switched on.


Unlike top-heavy conventional fans, the Dyson Air Multiplier™ fan has an energy-efficient motor is at its base, meaning it has a low centre of gravity and doesn’t topple over.


You have to use two hands to position a fan with blades. The Dyson Air Multiplier™ fan adjusts easily with a touch of the hand. It pivots on its low centre of gravity and stays put.

Variable airflow

Fans with blades have limited settings. The Dyson Air Multiplier™ fan uses an energy-efficient brushless motor, which means air speed can be precisely adjusted up or down. The airflow control switch control allows people to pick their perfect airflow.

Oscillation control

To oscillate a conventional fan you have to hold it steady, pull the toggle and watch it judder. Oscillating the Dyson Air Multiplier™ fan through 90º is simple. Press the button.


The Dyson Air Multiplier™ fan is constructed from tough Acrylontride butadiene styrene – ABS (C8H8 C4H6 C3H3N)n). ABS is a tough thermoplastic used to make light, rigid and moulded products. It has shock absorbing properties and is used to make car bumpers, crash helmets and modern golf club heads. It’s used in Dyson vacuum cleaners and Dyson Airblade™ hand dryers too.

Posted on Tuesday October 13th 2009 at 1:08 pm by . Copyright policy | Comments policy

  • mekaratta

    Great design

  • Neo

    It is not amazing that people like Dyson are presenting their products just with 3D renders?
    Where is the prototype? or the product?

    I expect design students to do renders, since is faster and cheaper that building protos, but not ideal for engineered projects like this.

  • Tim

    Another wonderful true machine, bravo…

  • Clever Idea, Dyson gotta love em’

  • Mark Harrison

    James has done it again! He will now have all the ‘fans’ he has ever wanted! Sorry couldn’t resit it tee hee :-)

    Would this design work as a ceiling fan, with the motor tucked away up in the cavity with just the minimalist ring showing?

  • Prof Z

    see the patent , great industrial design but may be too simple volumes

  • amsam

    I admit I have never been bothered by the buffetted air coming out of a fan, but this really is a thing of beauty.

  • Gerry

    It does not give information comparing energy consumption to a conventional fan. If it was more efficient I’m sure they would be promoting it in thier literature.

  • New visual design, but decades from being new technology:

  • chachi

    neo – you can find actual pics of the fan pretty easy. this was a good site with review of using it.

  • Gravy

    And the renderings are poor.

  • biggy

    I want to know how powerful it really is compared to a proper fan.

  • Neo

    Thanks chachi, I always prefer the real thing, the renders look usually quiet sad compared to the product itself.
    Is far better in pictures.

  • christian

    The idea’s great but the final design and styling needs some serious consideration.

  • Donald Waters

    Technology seems great, but why do all Dyson products look like they were designed in the 80’s, and have a VERY masculine, and quite aggressive look? The design doesn’t seem to reflect the soothing characteristic of cooling air, or reflect any cultural references. For me, I would never want something looking like this in my own home. Naturally a very subjective comment though, I accept.

  • Prof Z

    As i’m a design addict and great fan of air designers, i will have outside Starck (for wind energy)and inside Dyson fan and Lehanneur air cleaner….

  • A designer?
  • tanya telford – T

    id like to know more about the pros re: environmentally friendlier, have read a couple of reviews of this fan but with slightly different information included so im not completely sure. It does look and sound good though.

  • W

    Could this tech be used to power boats?

  • Stef

    We got our display samples yesterday, so do feel free to come and have a look!!

    Coexistence ltd
    288 Upper Street
    London N1 2TZ

    t.020 7354 8817

  • tanya telford – T

    Donald, I kind of agree with you re: aesthetics. When I was thinking about this fan I easily imagined it in offices – even on every desk (instead of air conditioning) but not so easily in a home, although more easily in white,

  • dora

    This fan is amazing, I just saw it in person at The Conran Shop and they look great. They’re offering free shipping on all fans until Oct 23!

  • Max,

    The technological achievement ISNT the fan motor in the base, it is the employment of an airfoil that creates the difference in pressure that moves the air through the airfoil loop. Yes, both technologies (airfoils and fans) have been around a long time, but their implementation and execution together is both new and exciting. This is the difference between Ives and Dyson, invention and innovation.

  • Actually, not a squirrel cage fan but a bladeless air amplifier. see Been used for decades in industrial applications- but typically quite noisy. The basic idea is you release compressed air through a couple of jets, and the expanding air carries along adjacent, stagnant air, from the surrounding volume. Can be very efficient. High cool factor, but it would be nice if the PR and Dyson site put their products in perspective.

  • herc

    Thank goodness – unpleasant buffeting was the bane of my life.
    £200 to make the problem go away is quite a bargain.

  • chameleon

    To answer W’s question on whether the technology can be applied to power boats, I think it should be possible as water is just a much higher density fluid, but still a fluid. The principle here is basically fluidic, specifically (I think) it is called Coanda Effect, named after one Henri Coanda.

    To Mark Harrison’s question, I think it can be ceiling-mounted with only the annula showing as long as the concealed base is supplied with sufficient air from the ceiling space. This air is important as it is the driver of the effect, i.e. this primary air flow creates the “inducement” & “entrainment” that gives rise to the resulting large volume of air that carries out the blowing work. Really, this thing can be applied to many other fan-based applications, such as air-conditioner, exhaust fan, etc.

  • Fantastic design indeed!! That fan model is very attractive and performance is higher than I expected. Continuous dimmer switch option will be helpful to control fan power and speed option nicely. Overall, it is just perfect for my new purchase. Thanks.

  • This is cool. I cannot wait to see this in action.

  • This is cool. I cannot wait to see this is operation.