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4 comments
Anonymous Poster

Bladeless (Coanda) Fan

08/26/2010 4:28 PM

Has anyone out there a picture or newspaper cutting of the Bladeless fan that was a market failure back in the seventies?

I appear to have weeded out my references, notes and drawings , although it may turn up.

The latest version is being touted in an exhibition of British innovation which appears odd considering the provenance of the latest inventors.

I realise that the subject has been discussed here before but I think no-one was able to cite the Company or country that produced it.

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Guru

Join Date: Oct 2008
Location: Newcastle Oz
Posts: 943
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#1

Re: Bladeless (Coanda) Fan

08/26/2010 7:30 PM

Sounds like a job for peterg7lyq

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Guru
Technical Fields - Technical Writing - New Member Engineering Fields - Piping Design Engineering - New Member

Join Date: May 2009
Location: Ketchikan, AK, USA
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#2

Re: Bladeless (Coanda) Fan

08/26/2010 11:54 PM

Try searching "bladeless fan" and "coanda fan"; one of the various pictures might resemble what you are remembering.

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Anonymous Poster
#4

Re: Bladeless (Coanda) Fan

08/31/2010 8:17 AM

Thank you for your help chaps.

I found the Japanese version (1980) and it appears the Dyson submission is indeed for an improved version of the basic concept.

Comments suggested that the Japanese version was never produced, but I do recall seeing a photo of a fan circa late 70's which showed a circular outlet covered with what I assume was a deflector screen, and the blurb indicated that it was utilising the Coanda effect . It could have been a mock up, of course.

These can be described as back end airmovers which induce air to come out of the core, whereas front end airmovers take the induced and primary air through the body.

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