Valve apparatus and method for controlling fluid flow

US5197508A · kind A · utility

Assignee

• Mannesmann AG · DE

Inventors

• Helmut Gottling · Altwarmbüchen, DE
• Rudolf Moller · Gehrden, DE
• Reinhard Mauentobben · Hannover, DE
• Gerhard Scharnowski · Gehrden, DE
• Dieter Meisoll · Hannover, DE
• Huu-Tri Nguyen · Lehrte, DE

Key dates

• Filing date: Feb 21, 1992
• Grant date: Mar 30, 1993
• Expiry date: Feb 21, 2012

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T137/86815
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

A valve device and method for controlling the operation of the valve device, in particular a proportionally acting solenoid valve, consisting of a valve housing in which several pressure fluid chambers provided with pressure fluid connections are present, having two valves which are arranged within the valve housing and are providing with moveable valve members, the valve members being connected to a valve rod which serves for actuation. In order to simplify the construction of the valve, and provide reliable and reproducible detection and control of the valve opening cross section, two valves members (4, 5) and (12, 13) of the two valves are arranged coaxially and are jointly connected to a valve rod (20), actuatable simultaneously with it. A pressure fluid chamber is arranged between the valves. A permanent magnet (9) is arranged on or in the valve rod (20) for detecting the position of the valve rod in such a manner that the range of the displacement path produced by actuation of the valve rod lies within the pressure fluid chamber (10). A field sensor 29 extends through the valve housing wall into the corresponding pressure fluid chamber (10).