Introducing the Dyson HEPA Big+Quiet Formaldehyde Purifier

Listen to this article

Dyson announces the launch of its new air purification technology for professional use in shared spaces – addressing the problem of indoor air quality in shared spaces.

There is increasing pressure on businesses to create healthy environments to support the wellbeing of employees and occupiers. Outdoor pollutants can enter shared environments and react with indoor pollutants, creating a complex mixture of dirty air – at times, causing indoor air to be more polluted than the outdoor air1. Higher CO2 levels indoors can impact wellbeing and cognitive abilities2 for occupiers of the space.

The Dyson HEPA Big+Quiet Formaldehyde purifier uses Cone Aerodynamics to deliver up to 90 litres of airflow per second of purified air, and a CO2 sensor to promote a clean and comfortable indoor environment. Designed with a fixed projection angle of 50 degrees to reduce airflow interference and operating at a Sound Power Level of 55.6 decibels of noise on maximum airflow speed, the Dyson HEPA Big+Quiet Formaldehyde purifier is Dyson’s quietest most powerful purifier yet.

Powerful projection for shared spaces

The Dyson HEPA Big+Quiet Formaldehyde purifier offers more than double the airflow of previous Dyson models, at up to 90 litres of airflow per second. To achieve this, Dyson engineers developed a new energy-efficient, low-pressure air delivery system: Cone Aerodynamics.

Advertisement

Cone Aerodynamics uses the Coanda effect to merge two streams of air over a smooth surface, resulting in a powerful and condensed jet of air that purifies air across large spaces, with minimal noise. Powerful projection is critical to ensure that the machine effectively delivers clean air in large, shared spaces and displaces dirty air back towards the filter. The Dyson HEPA Big+Quiet Formaldehyde purifier projects purified air at a fixed angle of 50o to reduce airflow interference.

Senses and reports CO2 levels in real time

Higher CO2 levels indoors can impact wellbeing and cognitive abilities3. The Dyson HEPA Big+Quiet Formaldehyde purifier incorporates a CO2 sensor, which provides live, colour coded readings of CO2 levels on the 1.44” LCD screen. If CO2 levels exceed recommended levels, the screen will show the reading in red, clearly indicating to occupiers of the space when ventilation is required.

Three-phases of fully sealed filtration

The Dyson HEPA Big+Quiet Formaldehyde purifier features a fully sealed filtration system to HEPA H13 grade4, ensuring purified air is projected back into the room. It’s three-phase filtration system is engineered to capture ultrafine pollutants, remove gases and destroy formaldehyde.

  1. The HEPA H13-grade particle filter is 3.8 times larger than its predecessor and captures 99.95% of particles as small as 0.1 microns, including dust and allergens. The larger filter lasts over 20,000 hours and can be replaced separately with the carbon filter, reducing unnecessary waste.
  2. Activated carbon filter combats NO2 specifically, which can be emitted from cooking in open-plan kitchen facilities, or by entering indoor environments from outdoor sources such as nearby road traffic. Acting like a sponge, the large surface area of the carbon filter captures gases like NO2, VOCs and odours.
  3. The Dyson Selective Catalytic Oxidation (SCO) filter has a unique coating, with the same structure as the Cryptomelane mineral. Its billions of atom-sized tunnels break down formaldehyde molecules into tiny amounts of water and CO2. It then re-generates with oxygen from the air to keep destroying formaldehyde continuously.

Sources of formaldehyde inside shared spaces include pressed wood products, cleaning agents, carpets, paint, wallpapers, and varnishes. Being 500 times smaller than particles the size of 0.1 microns, formaldehyde is particularly difficult to capture. When left undetected, it can lead to prolonged exposure due to continuous release of airborne chemicals, known as off-gassing. This can be exacerbated by modern, well-sealed spaces as pollutants become trapped inside and are unable to escape.

Quiet, even on full power:

Operating at a Sound Power Level of 55.6 decibels on maximum airflow speed, the Dyson HEPA Big+Quiet Formaldehyde purifier has been acoustically engineered with a low-pressure, high velocity system to minimise noise without compromising performance.

To achieve this, Dyson’s in-house team of acousticians and noise and vibration engineers optimized components within the motor and compressor:

  • Broadband Helmholtz silencer is a cavity shaped to capture sound waves of certain target frequencies, formed of microporous material. As sound waves are transmitted from the source (the compressor) along the airflow pathways, the Helmholtz silencer traps sound energy and dissipates low-frequency noise.
  • A unique labyrinth seal controls air recirculation by extending the airflow pathway, reducing the amount of energy it holds and reducing swirl in the recirculating air.
  • By soft mounting the motor within the compressor, Dyson engineers were able to isolate motor vibrations from the machine at the source before they became amplified, minimising the acoustic level generated from vibrations.

Real-World Testing

The industry standard test for purifiers, Clean Air Delivery Rate (CADR), is tested in a small test chamber of 12m2 with just one sensor and artificial air mixing. For Dyson’s largest, quietest, and most powerful purifier to date, Dyson engineers constructed a 100m2 test chamber on Dyson’s Hullavington campus. The chamber is equipped with 36 sensors to measure the machine’s ability to thoroughly and evenly clean the equivalent of a large, open-plan space. By implementing this rigorous testing method, Dyson can ensure that its purifier performs optimally in real-world settings5, surpassing traditional testing methods to promote healthy and comfortable shared environments.

References

1 Indoor Air Quality | US EPA

2 Du, B., Tandoc, M.C., Mack, M.L., Siegel, J.A., (2020). Indoor CO2 concentrations and cognitive function: A critical review. Indoor Air. 30(6), 1067-1082. DOI: 10.1111/ina.12706

3 Du, B., Tandoc, M.C., Mack, M.L., Siegel, J.A., (2020). Indoor CO2 concentrations and cognitive function: A critical review. Indoor Air. 30(6), 1067-1082. DOI: 10.1111/ina.12706

4 Markets to insert local caveat from Claims Matrix ref. HEPA H-13 grade filtration

5 Markets to insert local caveat for 100m2 room testing from Claims Matrix

Dyson

Dyson technology for your business - From hand dryers and hair dryers, to vacuums, purifying fans and lighting, Dyson technology is engineered with your employees and guests in mind.

CAMFIL HVAC Filtration Solutions

Related Articles

We've noticed you are using an ad blocker

Advertising helps bring you fresh independent content. Please disable the adblock plugin or settings in your web browser to access the content you are trying to reach on www.fmindustry.com.