<div dir="ltr"><div dir="ltr"><br></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Wed, Mar 25, 2020 at 11:18 AM J.Vidal <<a href="mailto:javi2302@gmail.com">javi2302@gmail.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr">tiene idea que motor emplean?<br></div></blockquote><div><br></div><div>Hay que tener en cuenta que de momento (creo que) son todos prototipos.</div><div><br></div><div>Por si sirve como referencia, siguiendo varios links desde el articulo que mencionaba en mi mail previo (<a href="https://hackaday.com/2020/03/23/mit-ventilator-designed-with-common-manual-resuscitator-submitted-for-fda-testing/" target="_blank">https://hackaday.com/2020/03/23/mit-ventilator-designed-with-common-manual-resuscitator-submitted-for-fda-testing/</a>) llegue a este paper (del MIT, del 2010): <a href="https://e-vent.mit.edu/wp-content/uploads/2020/03/DMD-2010-MIT-E-Vent.pdf">https://e-vent.mit.edu/wp-content/uploads/2020/03/DMD-2010-MIT-E-Vent.pdf</a> donde aparece como dato concreto:</div><div><br></div><div><b style="color:rgb(56,118,29)">4.4. Motor</b><font color="#38761d">
According to initial experiments, a maximum
torque of 1.5 Nm was required for maximum
volume delivery. A </font><b style=""><font color="#990000">PK51 DC gearmotor</font></b><font color="#38761d"> with a
stall torque of 2.8 Nm was selected for the
prototype. Despite the lower torque value
measured in our experiment, </font><font color="#990000">we found that this
motor did not provide quite enough torque to
effectively drive the cam at the slower inhalation
cycle rates prescribed to some patients</font><font color="#38761d">. </font><font color="#990000">While a
larger motor will be necessary to achieve better
speed control, this motor functioned acceptably</font><font color="#38761d"> at the proof-of-concept phase. It was desirable
for its gear reduction ratio of 51:1, and an
operating speed in the required range of 50-70
rpm. </font><br></div><br>Saludos,<br> Daniel.<blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
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