Boiler having a hot gas generator for burning liquid or gaseous fuels

US4147134A · kind A · utility

Assignee

• Interliz Anstalt · LI

Inventors

• Alfred Vogt · Freiensteinau, DE
• Wolfgang Kunkel · Dresden, DE

Key dates

• Filing date: Nov 4, 1977
• Grant date: Apr 3, 1979
• Expiry date: Nov 4, 1997

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F23J2900/13003
• WIPO field: Thermal processes and apparatus
• WIPO sector: Mechanical engineering

Abstract

A boiler having a hot gas generator for burning liquid or gaseous fuels. The hot gas generator comprises a combustion chamber unit, into the combustion chamber of which the fuel and air for combustion are introduced and in which the combustion of the fuel takes place. The combustion gases are conveyed out of the combustion chamber into a water cooled boiler firebox. A compressor supplies the air for combustion into the combustion chamber unit. A flue gas conduit, which leads to the flue gas vent of the boiler, at its inlet end, which is connected with the boiler firebox, is connected with the air intake of the compressor of the hot gas generator for recirculating a regulatable amount of flue gases into the combustion chamber unit of the hot gas generator. The flue gas conduit offers a resistance to the flow of flue gas therein, which resistance is greater than the chimney draft force present in the flue gas vent of the boiler.