Orifice plate, in particular for injection valves

US5899390A · kind A · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Stefan Arndt · Stuttgart, DE
• Dietmar Hahn · Gerlingen, DE
• Heinz Fuchs · Homberg (Efze), DE
• Gottfried Flik · Leonberg, DE
• Guenter Dantes · Eberdingen, DE
• Gilbert Moersch · Stuttgart, DE
• Detlef Nowak · Untergruppenbach, DE
• Joerg Heyse · Markgröningen, DE
• Beate Ader · Stuttgart, DE
• Frank Schatz · Kornwestheim, DE

Key dates

• Filing date: Nov 26, 1996
• Grant date: May 4, 1999
• Expiry date: Nov 26, 2016

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S239/90
• WIPO field: Textile and paper machines
• WIPO sector: Mechanical engineering

Abstract

An orifice plate includes a complex axial through passage for a fluid is created, composed of inlet openings, outlet openings, and at least one conduit located between them. The at least three functional planes of the orifice plate, each with a characteristic opening structure, are built up on one another by electroplating metal deposition (multilayer electroplating) . A layer of the orifice plate deposited by electroplating can have one or more functional planes. The orifice plate is particularly suitable for use on injection valves in fuel injection systems, in paint nozzles, inhalers, inkjet printers, for freeze-drying processes, for spraying or injecting liquids, for example beverages, or for atomizing medications.