Mikrodosiersystem für die Freistrahldosierung von Flüssigkeiten

摘要

A microdispensing system for the open-jet dispensing of liquids, with a valve having a valve chamber (16) bounded by an impermeable elastic membrane (11) and filled with the liquid for dispensing, one or more liquid supply lines (24,26) leading to said valve chamber (16) while an outlet closed from the exterior by the membrane in the position of rest leads from said chamber to a dispensing nozzle (10). An actuator chamber (29) is disposed on the other side of the membrane and in said actuator chamber (29) there is provided an electromechanical drive (30) connected to the membrane for the purpose of briefly lifting the membrane from the outlet, and in that said actuator chamber is closed in pressure-tight relationship in such manner that it can be subjected to a pressure differing from atmospheric pressure.