Electropneumatic valve assembly

US10619655B2 · kind B2 · utility

Assignee

• HOERBIGER AUTOMATISIERUNGSTECHNIK HOLDING GMBH · DE

Inventors

• Györg Molnar · Waldenbuch, DE
• Michael D. Kirn · Altensteig, DE
• Benedikt Hildebrandt · Echterdingen, DE
• Sebastian NEISS · Stuttgart, DE
• Max Schrobenhauser · Peiting, DE
• Daniel HALLER · Stuttgart, DE
• Jochen Schaible · Altensteig, DE
• Manjeet Singh BILRA · Tuttlingen, DE

Key dates

• Filing date: Oct 12, 2018
• Grant date: Apr 14, 2020
• Expiry date: Oct 12, 2038

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T137/87209
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

An electropneumatic valve assembly comprises an electropneumatic pilot stage and a pneumatic power stage which is actuated by the pilot stage. Each pilot valve switches at least two power valves, and the valve assembly has a housing with an electrical signal input, with a compressed-air port, at least one vent port and at least one working outlet. The housing is layered with a pilot stage housing and a power stage housing connected along a substantially planar parting surface. At least one sealing element is between the pilot stage housing and power stage housing surrounding a control pressure region between the pilot stage housing and power stage housing. The control pressure region has two actuation regions for two power valves and has a duct-like connection with a defined flow cross section between the two actuation regions. An outlet of the associated pilot valve opens into the control pressure region.