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portable battery powered carbon filter

idea

Member
i have been kicking around an idea about making a portable carbon filter and fan to use when i am transporting smelly stuff in my locked trunk.

smell hasn't been a problem yet when i have to drive around with some in my trunk because the amounts have been really small, but i could see in the future that it might be.

i was going to start by making a diy carbon filter, then i would hook it up to a muffin computer case fan that i have modified to run off of a battery. then i would build a case to hold the fan and filter setup.

i am thinking that it will just take in smelly air around it and exhaust clean air in the same space. then i will just let it run in my trunk to cut down on the smell.

has anyone ever made anything like this? any plans? any ideas as to how to do this?
 

boroboro

Member
Great idea! You don't need a battery, though, 12V power should be easy to find in the trunk. You could run 12V fans directly, or use a 12V -> 120V inverter to run a regular small carbon filter.

Be careful which wire you choose for 12V power, and it's power capacity. Wouldn't want you to blow a fuse the first time you step on the brakes (brake lights + filter might blow the fuse), then get pulled over for no brake lights. That would suck.

If I wanted to set something like that up, I would use a regular small grow room carbon filter, a 12V to 120V inverter, and a separate wire run up to the vehicle battery + terminal (with a fuse up near the battery).
 

geopolitical

Vladimir Demikhov Fanboy
Veteran
My dryer/filter is already 12v powered. It's just a rubbermaid organizer like this one:
http://www.shoplet.com/office/plima...1-8w-x-8-3-8d-x-9-3-4h-Black-Clear_162635.jpg

Bottoms of all the drawers are cut out and replaced with fine metal mesh. Top drawer is filled with carbon, bottom ones are full of the item to be dried. 12v 120mm axial fan is mounted to the top with a 120mm fan filter mounted on the bottom to keep the carbon from being sucked up.

As far as adapting a grow room style filter to a cars automotive system, a bilge blower for a boat is already available in standard duct sizes and is 12v to boot so you can direct wire it in, no adapters needed.
 

idea

Member
Bottoms of all the drawers are cut out and replaced with fine metal mesh. Top drawer is filled with carbon, bottom ones are full of the item to be dried. 12v 120mm axial fan is mounted to the top with a 120mm fan filter mounted on the bottom to keep the carbon from being sucked up.

did you fill in any gaps between the drawers or is it not an issue because the air flow is strong through the center? sounds like a great idea to me. i need some good dryers.
 

geopolitical

Vladimir Demikhov Fanboy
Veteran
Didn't have to fill in any gaps, there's next to none when the drawers are shut and airfllow is strong enough to compensate for the tiny ones that are there. I did try to make another one out of the walmart knockoff brand, but there were substantial gaps when the drawers were shut and it didn't work well. Mostly I used an axial fan because I'm still working through a case of 40 whisper quiets I have left over from when I did computer repair as a side line.
 

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