Dual diaphragm pump

F - Mech Eng,Light,Heat,Weapons – 04 – B

Patent

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Details

F04B 43/02 (2006.01) F04B 43/04 (2006.01)

Patent

CA 2384993

A diaphragm pump has first and second diaphragms each having a set of valve holes (the two sets being non-aligned) in the diaphragm surface thereof, one inlet port and one outlet port. The ports are positioned for sealing contact with the diaphragms at points that are not aligned with the holes in the diaphragms. A driver electrostatically actuates the two diaphragms independently to cause diaphragm movement to a plurality of diaphragm positions to control flow of fluid through the pump.

L'invention concerne une pompe à membrane comportant une première et une seconde membrane ayant chacune un ensemble de trous de valve sur leurs surfaces, les deux ensembles n'étant pas alignés, ainsi qu'un orifice d'entrée et un orifice de sortie. Ces orifices sont placés de manière à être en contact étanche avec les membranes, en des points non alignés avec les trous dans lesdites membranes. Un organe d'entraînement actionne les deux membranes de manière électrostatique et indépendante afin de provoquer le déplacement des membranes vers plusieurs positions en vue de réguler l'écoulement du liquide à travers la pompe.

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