TSB
screen printing => Equipment => Topic started by: Rockers on September 20, 2017, 08:16:12 PM
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Working just a couple of meters away from our Atlas Copco compressor really has taken a toll on my mental health. Feeling totally stressed fro all the noise around me especially the compressor kicking in. My ability to concentrate is gone, memory issues etc.
Sound proofing the compressor would help a lot I think.
Now what options are there? I came across sound curtains, which reduce the noise by up to 20 dB. Anyone here having soundproofed their compressor. Any photos available?
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Kaeser is the answer bar none the most quite unit I have heard, compressors need good ventilation what ever you do make certain it does not restrict airflow
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I know purchasing a new one may not be in the immediate plan. Can you post a picture showing the unit, its location, and proximity to other equipment to possibly come up with some ideas? I'm assuming this is an oil-less compressor due to the exceptional noise.
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Kaeser is the answer bar none the most quite unit I have heard, compressors need good ventilation what ever you do make certain it does not restrict airflow
That`s true regarding the the air circulation. I was looking into it already. The sound curtains seem to be a good solution in regard to sound proofing and air circulation .Other option would be to move the compressor out of the building which of course would piss off my neighbors well and proper.
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I know purchasing a new one may not be in the immediate plan. Can you post a picture showing the unit, its location, and proximity to other equipment to possibly come up with some ideas? I'm assuming this is an oil-less compressor due to the exceptional noise.
Here you go.
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Glad you brought this up. We have a 25hp sullair screw compressor and it's crazy loud. The constant droning forced us to use ear plugs for a few months. I was thinking about getting some 2x4s and walling it off with drywall, but it's 100cfm and really moves some air. It's also a little close to our panel and I don't think I could get away with it. Would also have to make some type of access door... so I think that's kind of out. Our best bet would probably be to downsize on the compressor.... we really don't need all that air. I got it for next to nothing and it's a beast, but damn the noise gets old.
I think a good solution could be built without wall framing or significant construction using black iron pipe and floor flange secured to the floor and walls. Then a sound proof blanket could be attached somehow. Might be effective, might not. Still have to worry about air flow / venting. But I think a balnket would be better than putting up a wall in our case. If I end up doing it I'll post pics. Unless of course someone has done this a better way....
Some of the sound proof blankets do look promising though
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Glad you brought this up. We have a 25hp sullair screw compressor and it's crazy loud. The constant droning forced us to use ear plugs for a few months. I was thinking about getting some 2x4s and walling it off with drywall, but it's 100cfm and really moves some air. It's also a little close to our panel and I don't think I could get away with it. Would also have to make some type of access door... so I think that's kind of out. Our best bet would probably be to downsize on the compressor.... we really don't need all that air. I got it for next to nothing and it's a beast, but damn the noise gets old.
I think a good solution could be built without wall framing or significant construction using black iron pipe and floor flange secured to the floor and walls. Then a sound proof blanket could be attached somehow. Might be effective, might not. Still have to worry about air flow / venting. But I think a balnket would be better than putting up a wall in our case. If I end up doing it I'll post pics. Unless of course someone has done this a better way....
Some of the sound proof blankets do look promising though
This is what I found yesterday. I think this might be a good solution but wanted to see if anyone else had some other ideas.
These curtains can be order made and have air inlet and outlet.
http://www.enoisecontrol.com/air-compressor-sound-enclosure/ (http://www.enoisecontrol.com/air-compressor-sound-enclosure/)
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My suggestion would be to go by any HVAC supplier and buy two 4x8 sheets of 1 inch (or thicker if they have it) duct insulation. It will be stiff with foil on one side and made from tight fiberglass. Not the stuff that floats around in the air. Also get a roll of their aluminum tape for sealing ducts and even a quart bucket of the sealing goo that dries hard in an hour.
Cut three 8 foot tall strips and tape them into a standing partition (viewed from above would be in the shape of a "U") to surround and slide up to the wall to isolate each (are there 2?). That would leave the top open high for any needed air circulation and could be pulled away for any servicing.
I believe that would drastically lower the sound level.
I used all of those same items to make a cover (pic below) for my dryer to dissipate the exhausting heat from the intake and outtake openings.
I did use a number of "L" angle brackets with nuts and bolts (note the washers on the sides to affix the sides to the top) to make all the corners rigid before applying the tape and goo.
---followup
I looked at the link you posted and my visual of what i was saying was like his middle picture. Check the prices of the above components and I'll wager they are far less expensive than the curtains. Maybe not. I think I paid something like $25 for each 4x8 panel and another $20-30 for tape and goo. Oh, and if you need an air inlet, get a simple A/C ceiling grill from HD and cut an opening and tape it in as needed.
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I'd be HIGHLY skeptical of 20 db of reduction from those curtains.
I'm sending this off to my sound engineer buddy and get his opinion... 20db is a LOT!
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First of all, start using earplugs TODAY. Not just for stress level, but for the future of your hearing. The soft, cone-shaped plugs that you roll & insert are the best. And if you want to really get some peace, put on safety earmuffs over them. You'll feel like you're on another planet.
Plugs: https://www.amazon.com/Ear-Buddy-Premium-Plugs-Decibels/dp/B00PSX6ZV2/ref=sr_1_10_s_it?s=hpc&ie=UTF8&qid=1506002138&sr=1-10&keywords=ear+plugs (https://www.amazon.com/Ear-Buddy-Premium-Plugs-Decibels/dp/B00PSX6ZV2/ref=sr_1_10_s_it?s=hpc&ie=UTF8&qid=1506002138&sr=1-10&keywords=ear+plugs)
Earmuffs: https://www.amazon.com/s/ref=a9_asi_1?rh=i%3Atools%2Ck%3Aindustrial+ear+muffs&keywords=industrial+ear+muffs&ie=UTF8&qid=1506002334 (https://www.amazon.com/s/ref=a9_asi_1?rh=i%3Atools%2Ck%3Aindustrial+ear+muffs&keywords=industrial+ear+muffs&ie=UTF8&qid=1506002334)
As for building an enclosure, you can check this out, too: https://acousticalsolutions.com/soundproofing-small-loud-widgets/ (https://acousticalsolutions.com/soundproofing-small-loud-widgets/)
(I haven't built an enclosure, but looked into it before getting a Brown press, which made it a non-issue.)
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I'm with Gilligan on that, 20dB across the whole audio spectrum sounds very fishy for 'curtains'.
They probably say something like "Up to a twenty dB reduction in sound", implying it will attenuate 20 dB at 20 kilohertz, where most everyone is already deaf, but 1 or 2 dB down in the 20-100Hz range, the range in which the noise is pounding your brain into a pulp.
I'd look into doing something like screenexpress mentions, I'd just add that if you can double wall an enclosure and 'acoustically decouple' those two walls, you'll have a massive drop in noise. Not easy, but might be worth it in your case.
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We have our 2 compressors in a room down the hall, hardly hear them at all ;D. However, we've moving, so this discussion is right up our alley. We are planning on walling them off in a corner of our new location.
Steve
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I keep looking at the pictures and the compressors do not appear as I expected. I do not see any opening that would require air input. What am I missing?
I was even thinking, with a front 3 sided enclosure as I mentioned, you could even put a top on it with flex wrap tubing (like over my dryer) to run even the top noise outside; or way off to the end of the room to muffle the sound even more.
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If you can afford it, a Mattei compressor is really quiet and can be on the production floor. Probably others as well designed for interior shop use. Soundproofing our screw compressors was impossible. That jet engine whine could go though concrete. Piston compressors on/off process is controllable, but enclosing a compressor is just asking for it to break down when it overheats on a hot day.
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Here is the 411 on the proper way to isolate your sound.
https://www.soundisolationcompany.com/education/soundproofing-101-3/best-wall-soundproofing/ (https://www.soundisolationcompany.com/education/soundproofing-101-3/best-wall-soundproofing/)
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You have the compressor so close to your carousel, must really drive you crazy.
There is no problem running air pipes in the building. I put my compressors on the roof (I have a new one like yours and a old noisy one as a backup) and I have a black plastic water pipes running in the building, just get a high pressure pipe.
Must be somewhere, on the roof, behind the building, anywhere other than next to the carousel.
You can leave the extra tanks where they are.
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You have the compressor so close to your carousel, must really drive you crazy.
There is no problem running air pipes in the building. I put my compressors on the roof (I have a new one like yours and a old noisy one as a backup) and I have a black plastic water pipes running in the building, just get a high pressure pipe.
Must be somewhere, on the roof, behind the building, anywhere other than next to the carousel.
You can leave the extra tanks where they are.
Yes it`s very troubling having the compressor so close to the press and the loading station. Unfortunately we are on limited space here and as you can imagine factory space is very expensive in Japan.
Wish I could put it up on the roof, but we are on the ground floor of a 3 floor building and my landlord is breeding race pigeons on the roof so that option is off the table anyway. Behind the building is a parking lot and then residential properties, same at the front. I`m screwed;)
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If that's the case I'd build a box around it from 2 layers of thin board, like chalk board and fill it with a good quality insulation.
Just check what airflow you need inside the box and what they recommend so that it won't overheat.
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Is there any sound foam inside the compressor? Like glued to the sheetmetal panels themselves?
I have to do my new one too, well now 'new' but a used 15HP MARK screw compressor. Someone has actually ripped all the foam off of mine, although it gets old and starts falling apart anyway.
I've always chucked my compressors onto a wood pallet with strips of old squeegee around the bottom to kill off any vibration that will amplify the drone of the screw compressor/motor somewhat. It is helpful.
For me personally I haven't encountered a screw compressor that I can't bring back from incessant maddening noise to a tolerable drone using the pallet/squeegee and replacing sound foam inside the box itself.
I understand everyone is different though. For me it's piston compressors, that consistent thumping drives me nuts and brings on headaches, but even placing squeegee under those to absorb a bit of vibration does quite a bit.
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Many have pointed out you need good airflow.
One trick there is to zig zag the vent(s).
Building a box around it is going to be the best way to do it. Once you do it make a huge difference.
Use layers of dryawall with a viscous compound between them called Green Glue. I have used this to soundproof walls and boxes, it works well.
Also use Roxul insulation between the joists, that stuff really kills sound.