Pressure regulating valve with optimized deaeration

US6092783A · kind A · utility

Assignee

• Mannesmann AG · DE

Inventors

• Gerhard Scharnowski · Gehrden, DE
• Reinhard Mauentobben · Hannover, DE

Key dates

• Filing date: Mar 16, 1999
• Grant date: Jul 25, 2000
• Expiry date: Mar 16, 2019

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T137/8704
• WIPO field: Control
• WIPO sector: Instruments

Abstract

An electropneumatic pressure regulating valve has an electromagnet fastened, as an actuating drive, to a valve housing. At least one work connection and a deaeration connection in the valve housing are guided, respectively, to a work chamber and deaeration chamber arranged inside the valve housing. The work chamber and the deaeration chamber are separated from one another by a valve seat corresponding to a valve tappet as closing element. The valve tappet proceeds from the electromagnet and is movable longitudinally through the work chamber via a movable magnet armature of the electromagnet. To improve the deaeration behavior and to achieve a more precise control capability during deaeration, the valve tappet has a through-hole which is directed longitudinally proceeding from its lower disk face and which opens into a pressure-tight coil interior space within the electromagnet. The coil interior space is sealed against the work chamber by a seal which enables the longitudinal movability of the valve tappet.