Safety valve and tank

US12181103B2 · kind B2 · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Friedrich Muehleder · Rochlitz, DE
• Raed Hamada · Stuttgart, DE

Key dates

• Filing date: Oct 28, 2021
• Grant date: Dec 31, 2024
• Expiry date: Nov 7, 2041

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02E60/32
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

The invention relates to a safety valve comprising a valve body with a guide bore which defines a longitudinal axis, a first opening which is formed on a base of the guide bore, and a second opening which is formed at a distance to the base along the longitudinal axis and which extends along a radial direction extending transversely to the longitudinal axis; a valve needle which is movably mounted in the guide bore of the valve body in an axial direction and which comprises a seal surface facing the first opening; a compression spring device with a spring that is compressed by a deflection and thereby biases the valve needle along the longitudinal axis into a seal position, in which the seal surface of the valve needle seals the first opening; and a thermally activatable trigger unit which has an extension along the longitudinal axis, said extension being greater than the deflection, and which is designed to collapse when a trigger temperature is reached, wherein the compression spring device is supported against the trigger unit.