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Technology

Jet engine technology. Reduced turbulence.

Dyson fan airflow schematic

Mixed flow impeller.

Using technologies found in turbochargers and jet engines, a mixed flow impeller draws air into the machine. The eleven impeller fins are asymmetric, so each one harmonises with the others, balancing the tone. And every one has a scalloped trailing edge, to reduce turbulence and further improve acoustics.

Dyson fan cutaway
Dyson fan cutaway

Airfoil-shaped ramp.

After the impeller builds air pressure, up to 38 litres of air per second is forced up into the eccentrically aligned loop. It’s then accelerated over an airfoil-shaped ramp, which harnesses the Coanda effect to manipulate the powerful flow of air. Airflow clings to the ramp, which is angled at precisely 16° – channelling its direction for optimum personal cooling.

Air Multiplier™ technology airflow schematic

Inducement and entrainment.

Air Multiplier™ technology exploits the Bernoulli principle, which creates an area of low pressure. This induces air behind the fan, whilst surrounding air follows the airflow in a process known as entrainment – multiplying the initial airflow by as much as 15 times.

Dyson fan noise dissipation animation
Dyson fan noise dissipation animation

Helmholtz cavity.

The acoustically engineered motor bucket houses a Helmholtz cavity. When sound waves enter the cavity, the pressure fluctuation within the chamber reflects them back. The waves are bounced within the cavity, dissipating sounds in the range of 1,000 Hertz – similar to the tone produced by a mosquito’s beating wing. This improves the tonal quality of the machine.

Less energy, less noise.

Dyson fan motor close-up

Brushless DC motor.

The newly calibrated brushless motor provides variable power, rather than the limited settings on conventional motors. It generates powerful airflow, whilst using less energy.

Dyson motor airflow schematic

Aerodynamic diffuser.

Airflow is separated into controlled paths and streamlined, so that air passes through the machine quietly and with greater efficiency. This means the motor can be calibrated to run more slowly while generating powerful airflow, further reducing overall noise.

Dyson Cool ™ desk fan

Overall rating

4.5/5

374 Reviews

91% of reviewers would recommend to a friend.

Reviewed on 06 April 2017

I wouldn't be without it

AlanCM

Fantastic multispeed fan, so controllable and quiet with a remote control and timer to help you get to sleep in sweltering conditions. For me, a 'must have'.

Read more

Read all reviews

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Price match promise

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Free scheduled delivery

Next day delivery, including weekends

Money back guarantee

Free 35-day return policy

Pay monthly

Spread the cost up to 12 months

Price match promise

Dyson Price Promise.

Our prices are checked and matched daily, so you can be confident that you're getting the best price direct from Dyson.

-  If you find a lower price at qualifying retailers within 7 days of purchase, we’ll refund the difference.

-  Contact our Customer Service team on 0800 298 0298 to get started.

 

Free scheduled delivery

Free next-day delivery

On orders placed before before 7pm seven days a week.

Scheduled delivery

Pick a day and time slot that suits you. Free options available.

Click and collect

We’ll deliver your machine to a pick-up location of your choice.

Please note that spares, tools and accessories are dispatched separately and will be delivered within 3-5 days.

Money back guarantee

Money back guarantee.

We offer a 35-day returns policy, in case you change your mind (on vacuums, hair care, lighting, purifiers, fans and heaters only).

-  You may cancel up to 35 days after receiving your machine.

-  Contact us on 0800 298 0298 or askdyson@dyson.co.uk to cancel.

See our returns policy for further details.

 

2-year or 5-year guarantee.

We don't stop caring about our machines once they're yours. We offer a guarantee on parts and labour.

5-year guarantee on:

-  Upright and cylinder vacuums.

2-year guarantee on:

-  Cordless vacuums;

-  Hair dryers;

-  Purifiers, fans and heaters.

Auto registration

Register your guarantee automatically when buying direct.

Pay monthly

Spread the cost to suit your budget

-  Choose a monthly instalment plan with PayPal Credit up to 12 months.

-  Interest rate of either 0% p.a. or 14.9% p.a. depending on the product.

Apply online at checkout

-  Select instalments at checkout and apply with simple steps.

-  Minimum order £199.

Representative example

Using PayPal Credit, a £1,200 purchase split over 12 monthly payments:

-  At 0% p.a. would cost £100.00 per month.

-  At 14.9% p.a. would cost £107.73 per month.

 

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