Valve and valve arrangement

US10890268B2 · kind B2 · utility

Assignee

• ALFMEIER PRÄZISION SE · DE

Inventors

• Erich Dörfler · Treuchtlingen, DE
• Matthias Mitzler · Graben, DE

Key dates

• Filing date: Apr 2, 2019
• Grant date: Jan 12, 2021
• Expiry date: Jun 14, 2039

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16K31/025
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

A valve includes a flow chamber and an actuating chamber, and a connecting valve opening. An actuating element can close or open the valve opening. An SMA element and a restoring element move the actuating element in opposite directions. A first area of the flow chamber is attachable to an air supply unit, and a second area of the flow chamber is attachable to a media reservoir and to atmosphere to release air from the flow chamber via an opening. An actuator coupled with the actuating element selectively connects the opening to atmosphere or closes the opening. A first check valve prevents fluid from flowing back from the second area of the flow chamber through the valve opening into the first area of the flow chamber when the actuating element is in the opening position.