Portable Respirator V2

The V2 individual portable aerator is an improved version of https://www.thingiverse.com/thing:4227395/files .

What's new:

• Reinforcement of the strap attachments (a little too fragile on version 1) and the structure of the case.

• improvement of the design.

• flatter (less clutter).

• addition of a space compatible with a thick filter or folded accordion (increases the exchange surface and therefore the efficiency of the filter and reduces the air resistance. the filter can be changed without stopping the fan and without risk of putting your fingers in the ventilation.

• there is no need to drill a hole to pass the power supply of the fan. it is necessary to connect the fan wires on the steel fixing bolts and connect the battery on these 2 bolts

• for a use of the ventilator as personal protection equipment (I am not responsible for the quality of your assembly, your materials and the filter added inside), the plans of a hood with positive pressure has been added (it may be necessary to adapt the pattern to your anatomy). This hood allows a portable aerator (aerator placed in the back). The material of the hood can be made of impermeable surgical drape (Kim Gard), plastic film (90 micron minimum thickness), light impermeable or waterproof fabric (parachute cloth) or gummed craft paper reinforced with adhesive (duck tape). The hood is reusable but do not share it with another person for obvious reasons of hygiene. a too important air leakage in the neck, can be solved by adding a moderately tight elastic around the neck and / or by taping the bottom of the hood on the clothes. you can extend the insertion holes of the ventilators by a flexible tube of the same diameter if you want to wear the respirators at the belt.

assembly of the printed parts. you will need :

• 4 steel bolts, 4 to 5 cm long and 4 mm in diameter (+ 4 suitable bolts). the head of the bolts will preferably be flat.

• glue adapted to the 3D printing plastic (for PLA: neoprene or cianoacrylate or epoxy contact glue or hot glue or fast-setting polyvinyl glue).

• 3 screws (wood or plaster screws) 2 cm long and 4.5 mm diameter.

• A computer fan 8 cm by 8 cm and 2.6 cm thick or less.

• A 12V battery suitable for the fan (check the fan amperage).

For the hood:

• a transparent semi-rigid screen (about 100 to 800 micron thick) made of PVC or another transparent plastic.

• Duck Tape, glue suitable for the fabric and plastic used.

English versus (automatic translate)

The V2 portable individual aerator is an improved version of https://www.thingiverse.com/thing:4227395/files.

What changes:

• reinforcement of strap attachments (a little too fragile on version 1) and the structure of the case.

• improved design.

• more, flat (less bulk).

• addition of a space compatible with a thick filter or folded in accordion. the filter can be changed without stopping the fan and without risk. -There is no longer a need to drill a hole to pass the power supply to the fan.

• for the use of the aerator as personal protective equipment (I am not responsible for the quality of your assembly, your materials and the filter added inside), the plan of a hood with positive pressure has been added (it may be necessary to adapt the pattern to your anatomy). This hood allows one ventilators (ventilator placed in the back). the material of the hood may be, medical kimgard, plastic film (90 micron minimum thickness), light waterproof or waterproofed fabric (parachute canvas) or gummed craft paper reinforced with adhesive (duck tape). the hood is reusable but do not share it with another person for obvious hygienic reasons. Too great an air leak in the neck, can be resolved by adding a moderately tight elastic around the neck and / or by taping the bottom of the hood on the clothes. this aerator will not protect you to toxic vapors and gases. From the point of view of infectious risk, its usefulness is that of a barrier risk (protects postilions and accidental hand contact on the face and its mucous membranes).

assembly of printed parts:

you will need:

• 4 steel bolts, 4 to 5 cm long and 4 mm in diameter (+ 4 bolts adapted). the head of the bolts should preferably be flat. - glue suitable for 3D printing plastic (for PLA: neoprene or cianoacrylate or epoxy contact glue or hot glue or polyvinyl glue with quick setting).

• 3 screws (wood or plaster screws) 2 cm long and 4.5 mm diameter.

• a computer fan of 8 cm by 8 cm and thickness 2.6 cm or less.

• a 12 V battery suitable for the fan (check the fan amperage).

The hood:

• a semi-rigid transparent screen (approximately 100 to 800 microns thick) made of PVC or another transparent plastic.

• Duck Tape, glue suitable for the fabric and plastic used.

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