Introduction: Portable USB HEPA Air Purifier / Fume Extractor

This is a homemade ventilation system for home use. It's made from an Target clear plastic box.

Goal is to use easy to get parts to make a portable air purifier or fume extractor for work and Hobbyist activities.

Step 1: Parts/Tools You Might Need:

1 x Clear plastic box - SteriliteĀ® 6 Qt Clear Storage - $0.97

1 x HEPA air purifier - Holmes AER1 HEPA Type Total Air Filter - $ 13.99

2 x 120mm high cfm Fan (work with 5V and 12 V) - Protechnic Fan 12V, 120 x 120 x 25mm - $7.5 x 2

1 x 120mm finger guard and mounting - 120mm Fan Grill Finger Guard & round rubber feet - $ 7.99

1 x 5V to 12V DC/DC converter - USB DC 5V TO 12V Step-up - Optional - $ 5.63 (From China)

1 x 2.1mm x 5.5mm female power jack adapter - 2.1mm x 5.5mm Female CCTV Power Jack Adapter

1 x Power bank

2 ~ 4 zip tie to hold the air filter.

Tools you might need:

Precision Knife Set x 1

Ruler x 1

Step 2: Making the Box - Air Filter

Use the exacto knife and metal to cut the rectangle shape for the HEPA air filter.

Use zip tie to secure the air filter.

Step 3: Making the Box - Fans and Mounting

Use the 120mm finger guard as a guide and cut it with exacto knife.

Make 4 holes for the mounting.

Put the rubber into the top cover mounting holes first will be easier for next step.

Pull the rubber all the way to make sure it's tight and secure.

Step 4: Powering Up the Air Purifier

Connect the fan wire to the 2.1mm x 5.5mm female power jack adapter. Red to +(plus) and Black to - (minus)

Connect USB power cable to 2.1mm female power jack adapter and plug in the usb port to the power bank.

At this point you should be able to see the fan running.

To get a high speed, insert the 5V to 12V Converter in between and the fan will run at full speed.

Step 5: Conclusion

I use low speed while I was in the office and I put it in high speed when I was in the garage working on Arduino project. So far this thing works great. Some decoration might make it looks better.

Comments

author
Wrrr 10-G made it! (author)2016-02-28

Nice idea and thorough instructable, thank you. I have one thing to add: please remember that the device in its current form will not remove the volatiles from soldering fumes, only 'particles'. To remove volatiles / hazardous fumes you WILL need activated carbon. You could simply add such a beast to the dust filter in you original design.

author
neilhsieh made it! (author)neilhsieh2016-03-04

Thank you for your suggestion. Just got one from amazon. The size is a good fit.

Here is the link

2016-03-04 09.26.28.jpg2016-03-04 09.27.09.jpg
author
tomatoskins made it! (author)2016-02-24

Such a great idea! I've been meaning to make a fume extractor for a while. Thanks for the inspiration!

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