Air Purification Snorkel

Given the current pandemic crisis, a friend of mine suggested that we try to adapt a diving snorkel as a PPE for medical personal. The idea is to create a positive pressure inside the mask that cover the whole face. Using a power bank as our energy source to drive a 5V blower fan, a 6015 fan in this design, we managed to create a good enough ventilation for the wearer to breath comfortably.

While the subject of using handheld vacuum HEPA filter is still debatable, this filter can be easily obtained and does not restrict the flow too much. The filter supposed to filter out particulates of size bigger than 0.3 micron by about 99.99%. While the virus by itself is smaller at about 0.125 micron, it will have to piggy back on fluid excreted from the patient, usually about the size of 3-5 micron. So we hope this apparatus will be of some value given the current situation.

The design split the fan casing from the nozzle attachment. This way others can try to adapt the fan casing un