زکریا 3 سال قبل
Single Venturi vs. Multi Venturi
All venturi vacuum pumps require compressed air fed into a nozzle. The nozzle is a gradually restrictive orifice that slowly expands. This controls the amount of air that can pass through it as well as accelerating it. The air then leaves the first nozzle as a fast moving bead. This moves across a gap on its way into a second receiver nozzle. Across this gap is where vacuum is made. In a single venturi the second receiver nozzle exhausts out to atmosphere. In a multi venturi the second receiver nozzle continues the process over again and sends air across another gap to create vacuum. The air enters a third and then a forth nozzle before exiting the pump to atmosphere. By recycling the compressed air across multiple nozzles we can utilize the remaining energy to increase vacuum flow, thus making the multi venturi 3 times more efficient than the single venturi.