Recuperative burner and associated oven

摘要

The burner nozzle (28) is positioned at the end of a gas supply pipe (26). The burner nozzle is enclosed by a partition (34) forming a first annular duct (36) and spaced apart from the gas feeder-pipe. An outer casing (38) spaced apart from the partition forms a second annular duct (42). A recuperator (22) spaced apart behind the burner nozzle consists of several directly communicating chambers (K1-8) running radially in relation to the annular ducts. The chambers are alternately connected to the second annular duct on the radial inside, and, on the radial outside, are connected to the second annular duct and have an outlet (66) radially outwards. The chambers are connected radially inwards to the first annular duct, and have an air-inlet (70) on the radial outside.