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Another, home made, shop air cleaner. It blows big time!

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Forum topic by b2rtch posted 01-20-2013 02:35 PM 6145 views 17 times favorited 25 replies Add to Favorites Watch
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b2rtch

4351 posts in 1795 days


01-20-2013 02:35 PM

Trying to fight the dust in suspension the air in my shop I decided the make a shop air cleaner. None of the ideas in this air cleaner are new, I just read about the subject and I made my own.


This is the inlet
I read that better than to have the air cleaner in the middle of the shop , it is better to have it again a long wall to establish a circular air flow in the shop.
It certainly works, I can feel the air circulating in every part of my shop.

As I get older, accessibility was a big concern for me and installing the cleaner on the ceiling makes it difficult to replace the filters.
I installed the cleaner on the top of an existing shelf. I just need a two step ladder to replace the filters.
Since I took the picture, I reinforced the self under the cleaner.


The outlet.

I installed four stages of filtration , ending with a MER12 filter.
As you can see the filters are very easy to replace.

When I first looked for a blower, the fist guy I called wanted $100.00 for his blower, the second one wanted $75.00 and the third one gave it to me free of charge.
This is fairly recent 110 volts , four speeds blower. On high speed it blows a lot of air.

I do not think that I ever showed a picture to the tool rack that I made several months ago, here you go.

Thank you for reading.
Bertrand

-- Bert


25 replies so far

View DIYaholic's profile

DIYaholic

14541 posts in 1421 days


#1 posted 01-20-2013 02:42 PM

Nice Air Cleaner. Your lungs will be thankful!!!
Were you able to find a remote, with time & speed control???

-- Randy-- I may not be good...but I am slow! If good things come to those who wait.... Why is procrastination a bad thing?

View JoeinGa's profile

JoeinGa

3665 posts in 753 days


#2 posted 01-20-2013 02:47 PM

”Since I took the picture, I reinforced the self under the cleaner”

I was wondering if that big box was only balancing on the shelf 1/2 it’s width :-)
Is it also bolted to the wall?

I was following the answers when you posted asking about building this. Nice job on yours.

-- Perform A Random Act Of Kindness Today ... Pay It Forward

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b2rtch

4351 posts in 1795 days


#3 posted 01-20-2013 02:52 PM

I do not need a remote control.
I have timer installed right at the power supply and when I receive it Monday, I shall install a four position chain switch to select the speed.

-- Bert

View Lee Barker's profile

Lee Barker

2169 posts in 1597 days


#4 posted 01-20-2013 02:59 PM

This is inspiring, Bert. On my way to work I pass a heating/cooling place that often has discard furnaces in its dumpster. I’d wager there are multi-speed fans in those.

Would you mind some details about the filters and their approximate cost?

Thanks kindly,

Lee

-- "...in his brain, which is as dry as the remainder biscuit after a voyage, he hath strange places cramm'd with observation, the which he vents in mangled forms." --Shakespeare, "As You Like It"

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b2rtch

4351 posts in 1795 days


#5 posted 01-20-2013 03:10 PM

I have about $40.00 in the filter the MER12 being the most expensive at about $32.00 but because of the other filters before, it should last me at least a year.
The first filter is there just to stop the big chunks ,the second one is a “4” and the third one a “7” and the third one it a MERV 12.
I read somewhere that MERV12 or 13 is equivalent to an HEPA filter.
I might buy, a MERV 14 to replace the 12 even before the 12 is dirty, my lungs are worth it.
There is one on Amazon for $85.00!
http://www.amazon.com/Nordic-Pure-20x25x4M14-C-1-Furnace/dp/B0073J2TXC/ref=sr_1_3?ie=UTF8&qid=1358694823&sr=8-3&keywords=MERV14+20x25x4

MERV, or Minimum Efficiency Reporting Value, is a numerical value given to filters in order to identify its filtering abilities.

This is now an international industry standard set up by the committee that oversees the filter industry. This standard is used for determining the filters ability to capture and hold dirt and dust in specific size ranges. Some filter manufacturers such as 3M use their own rating system, which is not approved as an industry standard.

MERV Rating Average Particle Size Efficiency in Microns
1-4 3.0-10.0 less then 20%
6 3.0-10.0 49.9%
8 3.0-10.0 84.9%
10 1.0-3.0 50%-64.9%, 3.0-10.0 85% or greater
12 1.0-3.0 80%-89.9%, 3.0-10.0 90% or greater
14 0.3-1.0 75%-84.9%, 1.0-3.0 90% or greater
16 0.3-1.0 75% or greater

A human hair is 20-40 microns in size.

MERV ratings are determined by adding particles of varying sizes (1-12) into a controlled testing environment. The particles are added upstream of the test filter and a laser particle counter samples the air before it enters the filter and after it leaves the filter. The two particle counts are compared to calculate the Particle Size Efficiency of the tested filter. Once this is determined, a MERV Parameters chart is used to determine the MERV rating.

MERV ratings range from 1 – 16 and measurements are in microns. Some of the common particles related to MERV ratings are pet dander, insecticide dust, smog, dust, viruses, wood, tobacco smoke, spores, bacteria and pollen.

Some of the most common filters found in residential use only have a MERV rating of 1 to 4. These are typically disposable panel type filters and do not do a good job of filtering the air because they will not stop particles smaller than 10 microns. NOTE: Filters in this range usually are not advertised with any specific MERV rating.

MERV 5 to 8 rated filters are a better choice and are more commonly found in commercial applications. These filters will collect particles as small as 3 microns and are a good choice for home owners also.

Filters with a MERV rating of 9 to 12 are used in commercial and industrial applications and will stop particles in the 1 to 3 micron range. These filters are a great choice for homeowners who want the best dust control possible. When using filters in this group it is important to change them on a regular schedule because if they become heavily loaded with dust they can have a negative impact on equipment performance.

-- Bert

View DIYaholic's profile

DIYaholic

14541 posts in 1421 days


#6 posted 01-20-2013 03:17 PM

Bert,
Great explanation of the “MERV System”, many will gain knowledge from this post!!! Thanks.

-- Randy-- I may not be good...but I am slow! If good things come to those who wait.... Why is procrastination a bad thing?

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b2rtch

4351 posts in 1795 days


#7 posted 01-20-2013 03:31 PM

I just found this people ,they seems to be too inexpensive to be “honest” ;

http://www.airfiltersdelivered.com/store/index.php

6×20x25×4 MERV13 filters for $116.00

-- Bert

View JohnInHadley's profile

JohnInHadley

22 posts in 740 days


#8 posted 01-20-2013 03:41 PM

Mathias Wandel recently did his own research on filters and saw dust. It changed my perspective. I didn’t realise that sometimes the outside air is dirtier than in the shop. It’s worth a look.
John in Hadley

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b2rtch

4351 posts in 1795 days


#9 posted 01-20-2013 06:00 PM

I saw that and I know that outside air for sure dirtier than the one inside my shop after it went through the filters again and again.

-- Bert

View teejk's profile

teejk

1215 posts in 1431 days


#10 posted 01-20-2013 06:39 PM

Bert…I’m not as concerned about 100% pure air as you are (life is a series of choices after all). Along with the hassle of changing the filters, putting the cost of the filters out there does certainly reinforce something I have said more than once…airborne capture should be step 2. Get as much as you can at source!

I’m still in design phase and re-visiting Pentz. I’m leaning towards a system that will be able to create a wind-tunnel at any tool that would make Bill happy.

Did you do any research on “washable” filters at all? (hard to believe but I do have a little “green” streak in me).

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b2rtch

4351 posts in 1795 days


#11 posted 01-20-2013 06:52 PM

I already have a dust collection system but I need to improve it.
This is mostly to clean the air in my shop during the night so that when I come in the morning I do not sneeze and caught.
The next step is cyclone and duct, coming soon.

-- Bert

View REO's profile

REO

664 posts in 820 days


#12 posted 01-20-2013 08:32 PM

nice post Bert! Well thought out DIY filter.

View PurpLev's profile

PurpLev

8476 posts in 2395 days


#13 posted 01-20-2013 09:01 PM

nice build, and any thing you can do to keep the air cleaner can only be good, and even at $100 a year for filters It really is a good investment

-- ㊍ When in doubt - There is no doubt - Go the safer route.

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b2rtch

4351 posts in 1795 days


#14 posted 01-20-2013 09:04 PM

Thank you all.
I really can feel the difference when stepping in and working in my shop

-- Bert

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b2rtch

4351 posts in 1795 days


#15 posted 01-20-2013 09:11 PM

Thank you all.
I really can feel the difference when stepping in and working in my shop

-- Bert

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