Combustion appliance for raising the temperature of exhaust gas

A combustion appliance for raising the temperature of exhaust gas arranged in a bend of an exhaust pipe to raise the temperature of exhaust gas through burner combustion, characterized in that it comprises a fuel injection nozzle for injecting fuel downstream in a direction of flow of the exhaust gas in the bend of said exhaust pipe, an ignitor for igniting fuel mist injected from said fuel injection nozzle, a double-cylinder type flame stabilizer coaxially surrounding the injection nozzle and the ignitor about the injection nozzle, a toroidal blocking plate on a distal end of said stabilizer for closing between inner and outer cylinders of said stabilizer, a combustion air introduction line connected to a proximal end of said stabilizer for introducing combustion air to between said inner and outer cylinders, a plurality of combustion air inflow holes formed throughout a periphery of said inner cylinder at a proximal end thereof, a plurality of peripheral fins formed on the periphery of said inner cylinder radially inwardly through cutting and bending-up at positions shifted from said inflow holes toward the distal end of the inner cylinder such that the combustion air is introduced from circumferentially to form a swirling flow inside the inner cylinder and a plurality of end fins formed on said blocking plate in a direction of fuel injection through cutting and bending-up such that the combustion air is discharged circumferentially to form a swirling flow around flame blown out of said inner cylinder.