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Friday, October 23, 2009

How to Reinvent the Wheel - Or in This Case the Dyson Air Multiplier

By Geoff Cummings

How do you improve something that has been around it seems like forever, essentially unchanged during most of that time, and charge 10 times as much for it?

Putting a new spin (pardon the pun) on a piece of household or office equipment can't be easy. But, British inventor James Dyson, of the bagless vacuum cleaner fame, has come up with something quite revolutionary. And because it is so unique, just like many of his inventions are, he can charge a premium price.

This new piece of technology? A fan, but without blades! Almost a reinvention of the wheel.

Costing close on £200 or in US dollars around $300 for the 10" version, this new fan doesn't come cheap. the 12" version works out about £20 ($30) more.

So, what makes this Air Multiplier so different?

For a start it is bladeless, at least as far as can be seen from the outside. So, without blades, or grilles, it is much easier to clean. And because there are no blades, this results in no buffeting which is normal with conventional fans as the wind that blades create hit you.

The way it works is by air being drawn in, then accelerated through an annular aperture which is set within a loop amplifier. The resultant effect is that as the Air Multiplier amplifies the air every fifteen seconds hundreds of litres of cooling air are churned out every second.

It also has oscillation and a simple power control, and comes in several colors.

One drawback, however, the Dyson Air Multiplier is in short supply, and there is currently a waiting list to get hold of one.

So, if you have that much money to spare be my guest. As for me, I'll stick with the common-or-garden desktop low-cost blade fan, until I get rich.

Geoff runs a home products site at along with property repairs advice at

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