Control and monitoring system for gas burners

US4125357A · kind A · utility

Assignee

• Jenaer Glaswerk, Schott & Gen. · DE

Inventors

• Klaus Kristen · Wiesbaden, DE
• Herwig Scheidler · Mainz, DE

Key dates

• Filing date: Jul 14, 1977
• Grant date: Nov 14, 1978
• Expiry date: Jul 14, 1997

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F23N2229/16
• WIPO field: Thermal processes and apparatus
• WIPO sector: Mechanical engineering

Abstract

An electronic control system monitors, in a gas burner, the four functions of (1) initial ignition of the gas, (2) continued combustion of the gas, (3) the average time rate at which the gas is burned, and (4) the maximum temperature of the combustion chamber. A first comparator is responsive to a first thermosensitive element for controlling the average burning rate (or energy output) and the maximum temperature limit; a second comparator is responsive to a second thermosensitive unit for monitoring the flame of the burner, to sense initial and continued ignition; a third comparator functions as a timedelay circuit in association with the second comparator during an initial ignition procedure; and a fourth comparator controls the source of gas in response to the condition of the first and second comparators, so that gas is supplied only when both safe and necessary.