Orifice plate, in particular for injection valves, and method for manufacturing an orifice plate

US5924634A · 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 22, 1996
• Grant date: Jul 20, 1999
• Expiry date: Nov 22, 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 complete axial through passage for a fluid, in particular for a fuel, including inlet openings, outlet openings, and at least one conduit located between them. The inlet and outlet openings are arranged in the orifice plate so that they do not overlap at any point when projected into one plane. This offset of the outlet openings with respect to the inlet openings results in an S-shaped flow profile for the medium, onto which an atomization-promoting turbulence is thus imposed. The orifice plate is particularly suitable for use on injection valves in fuel injection systems, in paint nozzles, or for freeze-drying processes.