Perforated disc and valve comprising the same

摘要

PCT No. PCT/DE97/01952 Sec. 371 Date May 21, 1998 Sec. 102(e) Date May 21, 1998 PCT Filed Sep. 5, 1997 PCT Pub. No. WO98/13601 PCT Pub. Date Apr. 2, 1998The orifice plate has a complete fluid passageway including inlet orifices, outlet orifices and at least one channel (cavity) disposed between them. The at least three functional levels of the orifice plate, having in each case a characteristic orifice structure, are constructed one on top of the other through electrodeposition (multi-layer electroplating), so the orifice plate is embodied in one piece. Because the orifice plate should be hydraulically unthrottled if the available plate surface is small, the inlet orifices are created with the largest possible circumferences. The orifice plate is particularly suited for use at injection valves, in paint nozzles, inhalers or ink-jet printers, in freeze-drying methods, for spraying or injecting fluids, or for atomizing medications.