BURNER OF THERMIC GAS JET CUTTER Russian patent published in 2001 - IPC

FIELD: gas flame treatment of materials. SUBSTANCE: jet head with tube for feeding combustible is arranged coaxially relative to combustion chamber. Rod with grooves is arranged inside said tube. Grooves form ducts for heating combustible. Intermediate shell is placed with gap between outer casing of burner and wall of combustion chamber. Annular passages of cooling system are formed by walls of members of burners with possibility for heating oxidizer supplied to burner in its outer annular passages and with possibility for cooling it in inner passage due to transmitting heat to fed combustible. EFFECT: possibility of rational use of combustible energy, simplified operation of burner. 2 dwg