| 摘要 |
PROBLEM TO BE SOLVED: To cool down the inside of a furnace in a short time by laminating a plurality of planar heat storage materials having a large number of through holes integrally while keeping a specified space such that the through holes of adjacent heat storage materials are not aligned each other and then sectioning the space between a heat storage body thus obtained and the inner surface of a radiant tube with a partitioning member. SOLUTION: A heat storage body 14a comprises a plurality of planar heat storage materials 15 of ring-like sintered ceramic, or the like, having a large number of through holes 16, and a plurality of spacers 17. The heat storage materials 15 and the spacers 17 are laminated alternately on the inner tube 12a of a burner such that the through holes 16 of adjacent heat storage materials 15 are not aligned each other before being fixed in an outer tube 13a. The space A between the outer tube 13a and a radiant tube is divided into two in the longitudinal direction by means of a baffle plate 23a. Exhaust openings 25a, 24a also serving as a cooling air supply opening and a combustion air supply opening, respectively, are made in front and rear of the baffle plate 23a. |
