I believe the way to go is to use a brushless motor, (those are the ones used in commercial ventilators), DC motors used in portable vaccum cleaners does have enought pressure capability but being brushed has make them unreliable for continuos use, the one you mention in your post doesnt have enough pressure , it get only to 10 cm3 aprox.
i found that brushless motors and drivers used in drones and remote controlled helicopters are not as hard to find, not expensive and suited for high RPM, and continuos use, i've just ordered one like this (we are in mexico), but they are available all around the world.
https://articulo.mercadolibre.com.mx/ML ... delism-_JM
to test it, we are working in the meantime in find/design and impeller and a case for it.
Jan Pawlik wrote: ↑
Thu Mar 26, 2020 11:01 pm
In this topic i would like to discuss the possible solution for designing the make-shift, yet reliable CPAP. We already have some prototype solutions, but I am more than convinced, that you may have better ideas. Surely, we will find a lot of different solutions, and probably we will sort them to three-separate classes: desperate/emergency/semi-proffesional.
Here I enclose the general idea. We want to base the idea on 32 mm polypropylene plumbing tubes.
This is exemplary DC brushless blower:
https://www.tme.eu/Document/50a75551f55 ... 99_DTE.pdf
We may also consider a car blower concerning the "desperate class".