HEPA Air Scrubber Chamber gasket and mount etc

thingiverse

Air cleaner for DIY enclosures like the Lack table etc. The gasket appears to be a crucial component because dirty air drawn through the HEPA filter can potentially flow along above the top activated carbon in the chamber. To prevent this, I added a gasket with a small flap that can be pushed past the lip of the frame down into the carbon chamber to stop any air from passing straight through. This should help force the air through the Activated Carbon Charcoal to remove smells etc. Print in TPU Support bracket The support bracket has been strengthened and widened because the complete filter unit weighs around 750g - nearly 2lb. Printed in PLA but may benefit from ABS or similar if your enclosure temperatures go very high! Filter Cover This lid may help reduce the risk of stirring up the captured fine dust and improves the overall appearance of the HEPA filter assembly. The lid is a close fit, enlarge as required. The best way to check for a good close fit is to cut off object bottom by 18mm (see CURA image above), or other slicer, and just print the lip to see how well it fits your HEPA filter assembly before printing the whole lid. NozzleToFan: Added Nozzle ToFan2.stl component to enlarge the recirculated air outlet in line with fan output footprint and included honeycomb grille to match the lid. Fan Gasket: Print two. Added to improve sound and vibration damping - print in TPU or similar high flex filament. Rooba HEPA filters are relatively cheap - see Amazon... https://www.amazon.co.uk/filters-iRobot-Roomba-Hannets-8-0-0-3/dp/B00RAPHENY/ref=sr_1_2?ie=UTF8&qid=1521018910&keywords=3+HEPA+filters+iRobot Other parts are as revised/designed by jmillerfo Full assembly instructions https://www.thingiverse.com/thing:2394452 14/12/2017: Added 87mm straight pipe and collar gasket. 23/01/2019: ChamberGuideGasketB.stl modified