PURPOSE: To protect a burner gun of a main burner against overheat of a pilot and to protect a pilot burner against burnt waste gas of high temperature in the case of heat storage operation.
CONSTITUTION: A heat storage type radiant tube burner comprises a burning cylinder 3 having a plurality of holes 4 concentrically provided at a radial interval in a radiant tube 2 and distributed on a peripheral wall, a main burner 6 extended along a central axis of the cylinder 3 and opened in a rear range of the cylinder, a heat storage unit 14 provided in a burning air supply passage 13 of the burner 6, and a pilot burner 9 provided in parallel with the axis of the burner 6 in burner gun 40 of the burner 6. Ends 41, 41' of the burner 9 are extended at least to an end face of a burner tip 7 of the burner 6.
YURI TOSHIYASU
NAKANISHI KATSUYUKI
NAKAGAWA FUTAHIKO
KOBASHI MASAMITSU
KAWASAKI STEEL CO