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How Dyson Made Their Latest Hand Dryer 35% Quieter¹
A hand dryer for quiet
places
In a far-flung washroom, loud hand dryers might
not be the end of the world. But for spaces where people work, eat or
relax, excessive and invasive noise can be disruptive – compromising
not just comfort, but wellbeing too.
So for Dyson’s acoustic engineers, the aim
was to design a hand dryer that could operate inside the washrooms of
sound-sensitive spaces like offices, schools and restaurants –
without disturbing those outside.
And just as crucially, without compromising the
performance that makes Dyson Airblade™ hand
dryers fast to dry hands hygienically with HEPA filtered air.
In other words – exactly the kind of
ambitious challenge that every Dyson engineer looks forward to…
Which compromise?
During the development of a hand dryer,
manufacturers try to strike a balance between speed, hygiene and noise. But
a lack of technology, or engineering expertise, can mean a compromise.
So you may find a hand dryer that’s quiet,
but because it has to use a weak motor to keep noise levels low, it may not
dry hands quickly.
Forcing washroom users to give up and leave with
hands still damp – risking the increased spread of bacteria by up to
1,000 times.²
Fast hand dryers fare little better. They use
bigger motors to improve their dry times, but can generate lots of noise as
a result.
But now, with the latest development in Airblade™ technology, Dyson engineers have
invented a hand dryer that doesn’t have to compromise – on
speed, hygiene, or sound.
How they did it
Reducing sound generated by the Dyson Airblade V hand dryer would require Dyson engineers to
design acoustic improvements throughout the machine.
From the motor that powers the hand dryer, to the
airflow paths inside it, and the precision-engineered slots where
high-speed air exits the machine, each new development contributed to a
significant reduction in noise leves – all
while maintaining a fast, hygiene dry time at just 12 seconds.
In fact, their work has resulted in a machine that
generates 35% less sound than its predecessor.¹ Which really is something
to shout about.
35% Quieter¹
Dyson
engineers measure sound with the ‘Loudness’ scale. It’s a
method faithful to how humans hear. Loudness testing shows that the new
Dyson Airblade V hand dryer is 35% quieter than
its predecessor¹ - a reduction that actually sounds that much quieter to
your ear.
Reprogrammed Dyson digital motor V4
Precisely
tuned to 1000W to draw less air though the machine – reducing sound
from turbulence.
Aerodynamic motor package
Redesigned
impeller and inner diffuser enable sound – optimised airflow paths.
Precision air apertures
Reduction
in slot size from 0.8mm to 0.5mm reduces overall noise and maintains air
velocity.
Certified by Quiet Mark
Decibel
levels and sound quality have been tested and approved by the Noise
Abatement Society.
¹Loudness
reduction comparted to the original Airblade V
hand dryer.
²D.
R.PATRICK, G. FINDON and T. E. MILLER: Residual moisture determine the level
of touch-contact associated bacterial transfer following hand ashing, Epidemiol. Infect.
(1997), 119, 319±325.
Contact
For further information or would like to
consider purchasing a Dyson Airblade™ hand
dryers please contact the Singapore DYSON authorized distributor –
VISO PTE LTD on +65 6850-5092 or +65 8207-7862 or visit www.viso.com.sg/dysonairblade.
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