eCharcha.Com   Support eCharcha.Com. Click on sponsor ad to shop online!

Advertise Here

Go Back   eCharcha.Com > Science and Technology > Technology

Notices

Technology Discuss all things technology that dont fit in the Computing forum...

Reply
 
Thread Tools Display Modes
  #1  
Old October 13th, 2009, 02:32 PM
echarcha's Avatar
echarcha echarcha is offline
Sutradhar {admin}
 
Join Date: Jul 2000
Location: CA, USA
Posts: 44,928
echarcha has a reputation beyond reputeecharcha has a reputation beyond reputeecharcha has a reputation beyond reputeecharcha has a reputation beyond reputeecharcha has a reputation beyond reputeecharcha has a reputation beyond reputeecharcha has a reputation beyond reputeecharcha has a reputation beyond reputeecharcha has a reputation beyond reputeecharcha has a reputation beyond reputeecharcha has a reputation beyond repute
Lightbulb Bladeless fan! Amazing technology.

This is straight out of science fiction. A fan without blades!

Quote:
Dyson launches the bladeless electric fan
By Paul Taylor
Published: October 13 2009 00:09 | Last updated: October 13 2009 00:09



First there was the bagless vacuum cleaner, then the towel-less hand dryer: Now James Dyson, the British inventor, has developed a bladeless electric fan which goes on sale on Tuesday in the US and Australia.

The Dyson Air Multiplier fan – which looks like something straight out of a sci-fi movie – uses advancements in airflow engineering instead of traditional blades to ‘multiply’ air 15 times and push out 119 gallons of smooth and uninterrupted air every second.

As a result, Dyson claims the bladeless fan, which works by forcing a jet of air out of a narrow circular slit and then over an aerofoil-shaped blade, is at least as efficient as its bladed counterpart, more comfortable and much safer.

Conventional electric fans have gone largely unchanged for years,” notes Mr Dyson. “The fundamental problem has remained the same for more than 125 years – the blades ‘chop’ the air creating an uneven airflow and unpleasant buffeting.”

Mr Dyson and his team of fluid dynamics engineers developed the technology behind the bladeless fan after studying the performance of an earlier Dyson invention, the Dyson Airblade commercial hand dryer that uses sheets of clean air travelling at 400mph to dry hands far more quickly and efficiently than rivals.

A team of fluid dynamics engineers spent four years running hundreds of simulations to precisely measure and optimise the machine’s circular aperture and airfoil-shaped ramp before perfecting Dyson’s Air Multiplier technology.

“We realised that this inducement, or amplification, effect could be further enhanced by passing airflow over a ramp,” says Mr Dyson. “And of course this was the point where the idea of a bladeless fan became a real possibility. Here was a way to create turbulent-free air and finally do away with blades.”

The new fan works by drawing air into the base of the machine. The air is forced up into the loop amplifier and accelerated through the 1.3mm annular aperture, creating a jet of air that hugs the airfoil-shaped ramp. While exiting the loop amplifier, the jet pulls air from behind the fan into the airflow (inducement). At the same time, the surrounding air from the front and sides of the machine are forced into the air stream (entrainment), amplifying it 15 times. The result is a constant uninterrupted flow of cooling air.

The Dyson Air Multiplier is powered by an energy efficient brushless motor and air speed can be precisely adjusted with a dimmer switch. It will be available in two sizes, a 10-inch model costing $300 and a 12-inch model costing $330.

LINK
__________________
eCharcha.com
-Loud and Proud Desi Opinions
Reply With Quote
  #2  
Old October 13th, 2009, 04:37 PM
dhurandhar's Avatar
dhurandhar dhurandhar is offline
Dhureshvar Dhuracharya
 
Join Date: Mar 2001
Location: Omnipresent
Posts: 13,276
dhurandhar has a reputation beyond reputedhurandhar has a reputation beyond reputedhurandhar has a reputation beyond reputedhurandhar has a reputation beyond reputedhurandhar has a reputation beyond reputedhurandhar has a reputation beyond reputedhurandhar has a reputation beyond reputedhurandhar has a reputation beyond reputedhurandhar has a reputation beyond reputedhurandhar has a reputation beyond reputedhurandhar has a reputation beyond repute
Re: Bladeless fan! Amazing technology.

Quote:
Originally Posted by echarcha View Post
This is straight out of science fiction. A fan without blades!
Quote:
We can't fault Dyson for chutzpah. After putting the company's spin on vacuum cleaners and then hand dryers, we probably should've guessed that a revolution in table fan engineering was next up. When we first saw an image of the Dyson Air Multiplier "bladeless fan" a few spurious theories popped into our heads as to how it works, but it didn't take long to figure it out: it has blades in it. It's just that these blades are inside the lower canister, rather similar to, dare we say it, how a vacuum cleaner is set up, with the air then routed through the ring up top. The benefits of this tech are that there are no nasty blades to get fingers caught up in, but also that there's no "buffeting" -- that on-off gush of air caused by fan blades unceremoniously chopping up the air into inelegant segments. Unfortunately, the downside of the Dyson method is that you can't make Darth Vader voices through the backside of the fan, and the whole assembly is closer in noise pollution to that of an actual vacuum cleaner than a regular table fan.
http://www.engadget.com/2009/10/12/d...fan-you-never/
__________________
Hum woh hai jo vidhaata ka bhagya likhte hai
Reply With Quote
Reply

Bookmarks

Tags
air fan, bladeless fan, dyson, fan, inventions, sci-fi, vacuum cleaner


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Business of Technology desichacha Technology 3 March 24th, 2010 07:12 PM
The politics of technology krishna Indian Politics 10 January 19th, 2007 10:28 AM
The technology behind your erection! 2gud Health 7 July 9th, 2005 05:53 AM
Why are we behind in implementing technology padhu Computing 8 August 1st, 2003 12:05 PM
Talibanism in Technology echarcha Cultural Exchange 3 April 8th, 2003 11:03 AM


All times are GMT -7. The time now is 09:27 PM.


Powered by vBulletin® Version 3.7.2
Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.
Site Copyright © eCharcha.Com 2000-2012.