Perforated disc and valve comprising the same

US6050507A · kind A · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Volker Holzgrefe · Ditzingen, DE
• Stefan Arndt · Stuttgart, DE
• Nikolaus Simon · Gerlingen, DE
• Frank Schatz · Kornwestheim, DE
• Heinz Fuchs · Homberg (Efze), DE
• Gunter Dantes · Eberdingen, DE
• Detlef Nowak · Untergruppenbach, DE
• Jorg Heyse · Markgröningen, DE
• Beate Ader · Stuttgart, DE

Key dates

• Filing date: May 21, 1998
• Grant date: Apr 18, 2000
• Expiry date: May 21, 2018

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02T10/12
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

The 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.