Lambda
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Posts: 566
Registered: 15-4-2005
Location: Netherlands
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Cyclone Dust Remover - Build your own Cyclone Dust Remover
Cyclone Dust Remover - Build your own Cyclone Dust Remover
Marco's Cyclone (aka The Nordic Sucker):
http://www.elisanet.fi/dncmrc/cyclone.htm
Note:
The Links that were give to Bill Pentz's OLD Website Cyclone Index (http://cnets.net/~eclectic/woodworking/cyclone/index.cfm) and Pages, are NOT working anymore !
Bill Pentz has a NEW Website !!:
http://www.billpentz.com/
And the Cyclone Index Page Link can now be found Here:
http://billpentz.com/woodworking/cyclone/index.cfm
Introduction:
I have always been bored about having my little shop permanently dusted from occasional use of power tools (usually sanding or sawing). In summer it
is usually viable to move outdoors the table saw (!) but if it's raining or snowing it's just a mess.
It was autumn 2003 and my renovation project was complete. I was left with a wood dust collector that had been great to pump building dust outdoors
but was a poor performer with its original filter bag (see Dust management for do-it-yourself building: http://www.elisanet.fi/dncmrc/dust.htm). It simply let all the fine dust through, namely the most dangerous one for my lungs.
After reading a lot on the Internet, especially Bill Pentz pages (which I kindly recommend: http://www.billpentz.com/) I understood that even a better (read pricey) bag wouldn't have helped. I decided to modify my basic dust collector by
adding a cyclone at its intake and a cartridge filter at its exhaust. The cyclone would capture all solid particles and coarse dust, the impeller
would pump only almost-clean air and the cartridge filter would retain the finest dust.
I don't have my shop in a two-car garage, with several woodworking tools scattered all around: my shop is only some 12 m2. Two meters of flexible
suction hose were enough for me and I was confident that my 550 W dust collector was up to the task.
Cyclone links:
Bill Pentz Personal Web Pages - Home:
http://www.billpentz.com/
Bill Pentz Cyclone Index Page:
http://billpentz.com/woodworking/cyclone/index.cfm
Steve Cater's Cyclone Project:
http://billpentz.com/woodworking/Cyclone/Steve%20Cater%20Cyc...
http://web.ripnet.com/~scater/Cyclone.htm
Lambda
[Edited on 13-2-2010 by Lambda]
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watson.fawkes
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I can second the recommendation for this site. It's quite good about
ventilation. The only thing to be careful of is that dust collection requires a minimum duct velocity (a linear measure) to keep particles suspended,
whereas a fume hood seeks a target face velocity at the hood, which translates to a volumetric measure of air flow. That difference in goals aside,
most of the other issues are in common.
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Lambda
National Hazard
Posts: 566
Registered: 15-4-2005
Location: Netherlands
Member Is Offline
Mood: Euforic Online
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Bill Pentz has indeed done some very exhaustive work on Cyclone Designing, and a pretty good job in presenting his efforts on his
Website too.
Bill Pentz Personal Web Pages - Home:
http://www.billpentz.com/
Bill Pentz Cyclone Index Page:
http://billpentz.com/woodworking/cyclone/index.cfm
Quote: Originally posted by watson.fawkes  |
... The only thing to be careful of is that dust collection requires a minimum duct velocity (a linear measure) to keep particles suspended, whereas a
fume hood seeks a target face velocity at the hood, which translates to a volumetric measure of air flow. That difference in goals aside, most of the
other issues are in common. |
And in order to obtain maximum efficiency above those minimum duct velocity conditions, the following Article addresses;
Operating Cyclones at the proper entrance velocity is important to maximize their dust collection efficiency and because fan motors pushing air
through cyclones consume a significant portion of the energy used by a modern cotton gin.
Obtained from: http://www.cotton.org
Entrance Velocity Optimization for Modified Dust Cyclones - By Paul A. Funk, S. Ed Hughs & Greg A. Holt (JCS04-178).pdf
http://www.cotton.org/journal/2000-04/3/upload/jcs04-178.pdf
Lambda
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