The Shop > Electronics & IC Programing
soldering fume extractor?
PekkaNF:
That is very nice. Very professional and works100%. I would not be too worried about dead critters on the roof. Outside tends to be pretty good ventilation and any small exposure is spatially dispersed.
I have few small snags on this solution, although something like that will be my firs choice:
* I do most of my electronic hobbies in the winter and typically here weather is pretty cold. If used too long it will pump some air (heat) out.
* Snow load on the roof cold weather. This means that the duct on the attic must be insulated and outlet must be made pretty professionally. When few tons of snow starts to move, all stuff must be bolted to roof under structure or there will be hole...
* Inavasive to the house construction.....red tape and all that.
Lot of that problem could be avoided if I could went air out trough the ventilation window, but I need to test how to avoid condensation and other issues.
My plan to is to test venting out and then build on three way valve. Exhaust out or into room. Plan "B" is a loud fan with local removal and good filtering.
Pekka
PK:
The nice thing about the fume cabinet approach is that you don't need much air flow or velocity.
All the other options require fast moving air to entrain the fumes.
PekkaNF:
Exactly.
And since you are venting it out there is no need for higher grade filter (higher presure drop or big area) and normal ducting is cheaper and very available compared to point removal system that you need high velocity, careful inlet design and flexible hose/articulated arm to get close enough.
I made rudimentary tests and point-removal system is fairly close to vacuum cleaner domain.....quiet system might be possible, but something like 400w induction motor, big radial fan, fairly big filter and it still needs silencers....doable but it really comes down to proper engineering or it olnly looks like one, but does not work properly. Nice design challenge, but if a proper radial fan does not land on my arms miracuosly, I think I'll take the easy solution.
Pekkka
S. Heslop:
--- Quote from: PK on March 24, 2016, 05:41:04 AM ---Here's one I prepared earlier. There's a plenum chamber at the top and a row of holes at the back of the 'ceiling' with some filter foam over them. But mostly it just vents out the main extraction chimney (same system used for the laser cutters and reflow oven). I'm sure the roof is littered with bird carcasses by now....
The front cover slides up some PVC trim strips and can be pinned into a couple of positions.
Before we had this, we tried all the 'point extraction' options. The only ones that removed enough fumes to prevent headaches were so noisy and cumbersome that they were impractical.
This is just some MDF, acrylic sheet and a lick of paint and removes 100% of the fumes.
--- End quote ---
That's very cool. I've been thinking about building a fume cabinet myself lately and that gives me something to go on.
Navigation
[0] Message Index
[*] Previous page
Go to full version