Sunday, 26 August 2018 23:24

LAUNCH VIDEOS: Dyson's new purifying fans take in-home air purification to the next level


Dyson has two sets of fan clubs – its loyal customers who love Dyson products with the same passion as Apple fans, and its actual range of various fan types, the most recent of which are the purest yet.

I would hardly be the first to say it, but if Dyson ever decides to make smartphones, Apple, Samsung and everyone else had better watch out.

The same goes for any future Dyson-made electric vehicles – Tesla should start getting very worried, and not just because Elon Musk seems to waver between sane genius and evil genius several times a day.

So, now comes the latest product from James Dyson and his team of creators bending reality to their will, whose brand new purifying fans promise to "clean every corner of the room", doing so with a "unique approach to purification driven by in-house expertise in electronics, filtration, and airflow".

Now, one thing is true when it comes to solving a problem – knowing it is there and being able to very accurately identify it is very important.

In the modern world, most of the air we consume is indoors, and the reality is that it can contain microscopic particles which are invisible to the human eye.

Dyson explains that "pollution sources like urban pollution, particulate matter and pollen can enter the home and combine with indoor pollution sources like cleaning products, pet dander and disintegrated faeces, scented candles, indoor paints and cooking fumes".

"Because modern homes are becoming better sealed to comply with energy efficiency requirements, pollutants can be trapped inside and circulation of airflow can become compromised."

This is where Dyson's new Pure Cool purifying fans come into play, in two styles – a large tower format for floor placement, and a small desk format for worktops and floors.

The improved filters in these fans "automatically purify the whole room, capturing gases and 99.95% of ultrafine particles as small as 0.1 microns".

Paul Dawson, vice-president for DysonHealth and Beauty, said: “At Dyson we develop machines for real people and real homes, creating technology that works well in the test lab but more importantly doing what they’re expected to do in a real-world setting.

"To clean the air at home, a purifier needs more than a filter. It needs to automatically sense pollution, capture gases and ultrafine particles, and project clean air to every corner of the room. The Dyson Pure CoolTM purifying fan does all of this, allowing it to automatically clean a whole room properly".

To explain what Dyson means by cleaning a whole room properly, the company explains that it adheres and surpasses the "AHAM AC1-2015 standard", which sets out how air cleaner manufacturers can define their performance by “the relative reduction of particulate matter suspended in the air in a specified test chamber”.

We're told "this means their performance is based on cleaning efficiency rates only", with the company proudly boasting that it designs its "purifying fans to go beyond test chamber conditions and focus on real home conditions – this is more than just having an efficient filter".

"When Dyson engineers set out to design a purifying fan, their research concluded that to clean an entire room properly, you also need to sense pollution events automatically; capture ultrafine pollutants; and project cleaner air around the room using Air Multiplier technology. The Dyson purifying fan is designed and tested to do all of this."

Here are the three videos from the launch of Dyson's new filters in Australia last week, the article continues below, please read on!

Here are the new ways in which Dyson's new purifying fans work:

Sensing: A new LCD display shows which particles and gases the Dyson Pure Cool purifying fan is automatically sensing in real time. A unique Dyson algorithm processes the input from three sensors and then displays air quality readings.

Lasers measure and detect ultrafine particles. A separate sensor detects the amount of VOCs (Volatile Organic Compounds, such as benzene and formaldehyde, emitted from paint, burning candles and materials in furniture) and NO2 present. A third sensor measures relative humidity and temperature.

Capturing: An improved filter in the new Dyson Pure Cool purifying fan captures both particulate matter and gases. Dyson engineers have incorporated 60% more HEPA media into a taller and deeper filter, and they’ve introduced three times more activated carbon, which can absorb gases, odours, domestic fumes and VOCs.

Nine metres of condensed and sealed borosilicate microfibre filters capture 99.95% of particle pollution as small as 0.1microns2 such as allergens, bacteria, pollen and mould. Activated carbon filters, which have been coated with Tris (Trishydroxymethylaminomethane) to increase the absorption efficiency, remove gases including NO2, formaldehyde and benzene. Dyson filters meet the industry standards of EN1822.

Projecting: The Dyson Pure Cool purifying fan is the only purifier with Air Multiplier technology and 3500 degree oscillation, allowing it to project clean air to every corner of the room. By expanding the degree of oscillation to 3500 degrees and using Air Multiplier technology, the machine can project 290 litres of purified air per second to every corner of the room.

To avoid a cooling effect in winter, the Dyson Pure Cool purifying fan features a unique new diffused airflow mode. Along with the forward airflow mode, which cools you as a fan with purified air, there is now a diffused airflow or purification-only mode, which can be used when you want to purify the air but don’t want air blowing on you.

Inside the annular loop a valve mechanism is driven by a brushless stepper motor, to allow switching between diffused mode and fan mode.

Fan mode

In fan mode a baffle stays in place to deliver a powerful, frontward stream of purified air. This can cool you down in the summer while purifying the room.

Diffused mode

The baffle moves to block the front aperture, diverting air through the rear of the annular loop at a 450 angle. Because the aperture is wider, this creates a more diffused airflow, uses less energy and generates less noise. And purification effectiveness is maintained, without the cooling airflow.

Dyson Link app: Available for iOS and Android, the Dyson Link app enables you to track indoor and outdoor pollution, temperature and humidity levels. You can also use it to control your machine and see how many hours of filter life you have left.

The new machines come with full Over the Air Update Capability (OTA) – meaning Dyson owners can continue to get the most advanced Dyson software even after purchasing the machine.

Engineered for real homes: Dyson purifying fans are designed to work in real homes. Some manufacturers of conventional air purifiers gauge their performance using a laboratory test method called 'Clean Air Delivery Rate'. It is conducted in a compact chamber just 12m2 in size, with an added fan to circulate the air - and only one sensor to measure air quality. It is not representative of many living room environments.

Dyson engineers also created a lab test called the POLAR test. It is "based on a larger living room size, with no added fan. Eight sensors in the corners of the room and one sensor in the centre collect air quality data every 5 seconds, detecting particles of indoor air pollution that are 300 times narrower than a human hair.

Analysing the data across all nine sensors lets Dyson engineers ensure the Dyson Pure Cool purifying fans deliver a uniform cleaning performance throughout the whole room.

Evan Stevens, Head of Engineering for Dyson Environmental Control said: “We needed to test our machines in an environment that reflects how our owners actually use their machines and the rooms in which they are used. So we built a chamber without a ceiling fan, made it 27m2 in size, and added 9 sensors capable of detecting particles 300 times narrower than a human hair.

"3D mapping our machine’s performance in this chamber lets us know that when our machine says the air in a room is clean, it truly is clean”.

So, what are some of the pollution sources at home? Dyson shares the details:

Outdoor air pollution: Sources such as tree pollen, particulate matter and city pollution can enter the home and may remain trapped there.

Wood burning fireplaces and stoves: Wood-burning fireplaces and stoves emit particulate matter during combustion.

Pollen: Plants and flowers can release microscopic pollen into the air.

Pet hair and disintegrated faeces: Cats, dogs and other household pets can spread this microscopic material around the home.

Scented candles: Some chemical substances found in scented candles can release benzene and formaldehyde into the air as they burn.

Furniture foam: Foam that can be found in furniture can release formaldehyde gas

Indoor paints: Some indoor paints can use volatile organic compounds, which can be released as gaseous chemicals when they dry and potentially throughout their life

Air fresheners: Some household air fresheners can contain volatile organic compounds and benzene, which can be released with the fragrance when sprayed.

Gas hobs and cooking fumes: Gas hobs and the food cooking process itself can emit fumes, odours and particles into the air.

Cleaning products: Household cleaning products can contain benzene and household fumes and odours.

Carpets, rugs and flooring: Some carpets, rugs, flooring and their backing materials can emit formaldehyde when new

How did Dyson "pioneer purification"?

The company notes that it "first entered the purifying fan category in 2015 in response to the increasing global problem of indoor air pollution.

"Dyson has continued to pioneer purifying fans globally, leading new test methods in China, the world’s largest market for air purifiers.

"In January 2018, China’s Household Appliance Standard and Technology Industry Alliance released the first accreditation for intelligent air purifying fans – featuring test methods first developed on Dyson’s UK Technology Campus. Dyson is the first company to test its machines according to this new standard".

Calibrating sensors

"Dyson engineers have calibrated the sensors inside the Dyson Pure CoolTM purifying fans with scientific particulate readers that cost up to £20k. An array of 30 Dyson sensors have sat alongside air quality monitoring labs in both King’s College London and Peking University in Beijing to understand how Dyson sensors react and ensure they are delivering the same feedback as world leading academic equipment.

"The sensors were left running outside in boxes for 6 months across 3 seasons in dirty, hot, wet and freezing conditions to gather long term running information. Collecting 288 pieces of data a second gave Dyson engineers over 5 billion data points for analysis and meant the most effective calibration possible could be applied to the new generation of machines".

Range: The new Dyson Pure Cool purifying fans come in two versions - a larger tower format for floor placement, and a smaller desk format for desks, worktops and floors. Both machines are available in a White/Silver colour and Black/Nickel colour.

Guarantee: Dyson Pure Cool purifying fans have a 2 year parts and labour guarantee.

Remote control: A magnetised remote control can be neatly stored on top of the machine and used to control the functioning of the product.

Sleep timer: Pre-set intervals ranging from 15 minutes to 9 hours.

Night time mode: Monitors and purifies using the machine’s quieter settings, with a dimmed display.

3500 oscillation: high-precision brushless stepper motor and infra-red encoder provides variable and controllable oscillation angles, up to 350 degrees. 28 individual magnets also allow the oscillation angle to be set manually.

Connectivity: Dyson Pure CoolTM purifying fans are integrated with the Dyson Link app 4.1, which has been designed for iOS and Android.

The machine is compatible with dual band (2.4 GHz and 5 GHz), and comes with full Over the Air Update Capability (OTA) – meaning Dyson owners can continue to get the most advanced Dyson software even after purchasing the machine.

Investment: £22m invested on new test labs, engineering research & development, prototypes, connectivity research and protecting IP.

Prototypes: 75 engineers spread over six countries developed 2,605 prototypes of the machine and sub-assemblies during development.

Price and availability: The Dyson Pure Cool purifying fans will be available in white/silver and black/nickel from and all major electrical retailers and department stores from September 2018 with a recommended retail price of A$649 (desk format) and A$799 (tower format)

More information on both new fans is here


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Alex Zaharov-Reutt

One of Australia’s best-known technology journalists and consumer tech experts, Alex has appeared in his capacity as technology expert on all of Australia’s free-to-air and pay TV networks on all the major news and current affairs programs, on commercial and public radio, and technology, lifestyle and reality TV shows. Visit Alex at Twitter here.



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