Monday 20 Aug 2018
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News for vacuum cleaners on Monday 20 Aug 2018

What makes Dyson vacuum cleaners different? (Dyson Ltd)

Dyson explain what makes their vacuum cleaners different.

Root Cyclone™ technology

Ordinary vacuum cleaners have bags and filters that clog and restrict airflow. Dyson machines all include patented Root Cyclone™ technology, which uses centrifugal forces to spin dust and dirt out of the air and straight into the bin. No bags. No loss of suction. You’ll only find this in a Dyson vacuum.

Dyson vacuum cleaner Root Cyclone™ technology

No ordinary cyclone

James Dyson first invented cyclone technology for vacuum cleaners 30 years ago. Ever since, Dyson engineers have been improving it, making it work better and better. As they invent, they patent – protecting their efforts from copycat manufacturers. To date, they have filed 564 patents. You won’t find Root Cyclone™ technology in any other vacuum cleaner.

Why ordinary vacuums lose suction

Ordinary vacuum cleaners, even those that don’t use bags, lose suction power as they vacuum. Here’s why:

Bagged vacuum cleaners

The bag is meant to trap dust and dirt, and allow air to escape through millions of tiny holes in the paper. But when you start to use a bagged machine, dust and dirt collects in the bag and clogs the holes. This restricts the airflow, which causes a loss of suction, reducing the efficiency of the vacuum and leaving dust and dirt behind in your home.

Bagless vacuum cleaners

Ordinary bagless cleaners work in a similar way to those with bags. The cyclone collects the large dirt, but a central filter is still required to trap the fine dust. Just like a bag, it quickly clogs and restricts the airflow, causing a loss of suction and reducing the efficiency of the cleaner.

Competitor vacuum cleaners

Why Dyson vacuums with Root Cyclone™ technology don’t loose suction

Dyson’s patented Root Cyclone™ technology doesn’t rely on a bag to trap all the dust and dirt. Instead, it spins the air so fast that centrifugal forces up to 150,000 times the force of gravity fling dust and dirt out of the air and straight into the clear bin.

Root Cyclone™ + core separator

In their latest machines, Dyson engineers have combined Root Cyclone™ technology with a core separator – an extra cyclonic stage between the outer and inner cyclones – to separate particles as small as 0.5 microns from the airflow. You could fit 200 of these particles on a full stop.

Outer cyclone

First, dust is drawn into a powerful cyclone. Centrifugal forces of 500 G fling larger dirt, debris, fibres and pet hairs into the clear bin.


The air passes through here, while fibres and pet hairs that have escaped the outer cyclone are sieved out and directed back into the bin.

Inner cyclones

Finally, a cluster of smaller, faster cyclones generate centrifugal forces of up to 150,000 G – extracting particles as small as mould and bacteria. By the time the air leaves a Dyson vacuum, it contains up to 150 times less mould spores and bacteria than the air you breathe.

Dyson Root Cyclone™

Ball™ technology

Upright vacuum cleaners have always used fixed wheels. But wheeled vacuums are awkward to steer and can make you work a lot harder than you need to. All that back and forth around corners and obstacles. Ball™ technology is a new way to steer. Dyson Ball™ vacuums ride on a ball, which pivots around itself so you can instantly change direction with just a turn of the wrist.

Dyson Ball™ technology

Dyson digital motors

Michael Faraday discovered electromagnetic induction, the principle behind the electric motor, in 1831. Yet, despite being technologically advanced at the time, electric motors have changed very little since. Bulky, old-fashioned components and lots of moving parts prone to failure.

Dyson engineers have spent a decade developing new types of highly efficient digital motors. The Dyson digital motor is smaller, lighter, cleaner and more power-efficient than conventional electric motors.

Dyson digital motors

The problem with conventional motors

Conventional A/C motors use big, fragile fans, copper windings and brushes that wear out easily, making them inefficient and unreliable. And as the carbon brushes wear down, they emit carbon particles, which is bad for the environment.

conventional vacuum cleaner motor

Dyson digital motors

Dyson digital motors use digital pulse technology, spinning at up to 104,000 times a minute (five times faster than a racing car engine). They are incredibly efficient too – due in part to high tolerances. For example, the impeller spins at over 600mph with only 0.3mm clearance between the blade tip and the impeller housing. And no carbon brushes means no carbon emissions.

Dyson digital motors

How the Dyson digital motor works

  1. Circuit board and capacitors

    Microprocessors control motor timing and speed, adjusting up to 3,000 times a second. The capacitors supply power to the circuit board and take the pressure of high-frequency currents away from the battery.

  2. Stator

    By sending a current through coiled copper wire, a strong electromagnetic field is produced. The stator (controlled by the microprocessor) rapidly switches the polarity of this field between north and south.

  3. Neodymium magnet

    The Dyson digital motor in the DC30 and DC31 handhelds uses a neodymium magnet. Neodymium is the strongest magnetic material known – ten times lighter and ten times more powerful than your average fridge magnet. It spins at up to 104,000 times per minute as it reacts to the alternating electromagnetic fields produced in the stator.

  4. Impeller and vane diffuser

    The impeller is aerodynamically engineered with continuously curving blades to spin at extreme speeds (in fact, there is barely a 2D section to any part of the blade surface). The airflow it produces is channelled up and through the vane diffuser, cooling components on the way.
How the Dyson digital motor works


Dyson estimate your vacuum cleaner will travel 930 metres during a house clean. During development testing, Dyson vacuum cleaners travel 1,357,168 metres.

Dyson estimate you’ll pull the power cable taut 1,170 times during its life. Dyson power cables are tugged taut 10,000 during development.

You probably don’t drive with care when using your vacuum cleaner. Dyson push the floor tool of a Dyson vacuum cleaner into a wall 10,000 times during development.

How many times will you open your vacuum cleaner bin to empty it. Dyson’s test rig presses the bin release button 1,560 times during development.

Testing is a lengthy, iterative process. But one that results in continual improvement.

Where to buy a Dyson

Visit the Dyson website to find you nearest Dyson retailer.

Alternatively, you can shop online direct from Dyson’s website at

For further information: What makes Dyson vacuum cleaners different?

Dyson Ltd
Tetbury Hill
SN16 0RP
United Kingdom
Telephone 0800 298 0298
News Ref:1562

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