Picture of Make an Air Purifier on the cheap
I'm sure there are some of you out there, like myself, whose room is full of dust, allergens, and other debris.  After looking at the prices of some of the purifiers on the market, I decided to make one myself, and construct an instructable on how to recreate it.  
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Step 1: What you'll need

Picture of What you'll need
You will need the following parts:

A foot of 3 - inch diameter PVC tubing
A 3 - inch diameter computer fan (mine was 12V)
An AC/DC adapter, with a DC output the same as your fans
Filter for a room air conditioner
Toggle switch
Hose clamp for the 3 - inch pipe

I already had the fan and adapter laying around, but everything shouldn't cost more than 20 dollars.

You will need the following tools:

Drill and various bits
Soldering iron + solder
Hot glue gun + sticks

Step 2: Preparation

Picture of Preparation
Start by drilling two small holes for the wires of the adapter, and the wires of the fan.  Make sure your holes are placed close enough to the top so that you have room to install the fan.  

Next, make one larger hole in between the two smaller ones to accommodate the toggle switch.  

Step 3: Assembly pt. 1

Picture of Assembly pt. 1
Twist together, then solder the negative wires together.  

The twist and solder each of the positive wires to the prongs of the toggle switch.  (Positive on the adapter has a white stripe)

Step 4: Assembly pt. 2

Picture of Assembly pt. 2
Push the toggle switch through the large hole, and screw on the anchor that comes with it.  Next, using the hot glue gun, glue the holes where the wires go into, and around the toggle switch to form an air tight seal.  Allow a couple minutes to completely cool.  

Then, place the fan on the top, make sure its centered with the air flow going AWAY from the pipe, and hot glue the corners down.   Then, form a nice tight seal around the edges of the fan and pipe.  
tinker2343 years ago
wow awesome now have to figure away to block off the air from the glass door one issue solved in my room thanks i wonder if i could hide this and still work i love this project very simple oh i am rambling again sorry
ATHANCHEW3 years ago
How well does this filter works?
did something similar in Iraq for the dust!!! used bat powered fans off Ebay and some MRE boxes! used Wet wipes as Filter!!!! it work well for about a month ! the fan from ebay kept breaking down! lol
redrover344 years ago
I like this, especially since I can do it almost completely with stuff I have in my shop. I am going to add another filter section with a cartridge of activated charcoal. I'll post the results...
Gottwinkies4 years ago
Very nice, very inspring! Now I find myself eyeballing my old computer with the toasted hard drive- Mouhahahahaaa! Those little fans have so many uses, but I didn't think about hooking one to an adapter. Thanks!
Nice. If you added some aquarium activated charcoal or something similar, between the filter layers, it could also help to remove fumes and chemical odors. I don't know where you find it but there is a product that is basically corrigated paper coated with charcoal
Putting a layer of washed, activated charcoal, between the filter layers will do the same thing. When I had aquariums, I used to make my own filters after I found out that the charcoal was just activated charcoal, and could be bought in the pharmacy area of most stores. You wash, or rinse off, the charcoal to eliminate the dust before using.