| 摘要 |
PROBLEM TO BE SOLVED: To provide a structure which achieves the vertical inversion of a radiant tube even in an existing one-point support part, to elongate a life of the radiant tube by using the structure, and to reduce operation costs.SOLUTION: A heating furnace comprises: a radiant tube in which a substantially-symmetrical pipe conduit is bridged and arranged in the furnace width direction in such a vertical direction that an M-figure is laterally laid; and support means 13 which supports the radiant tube by a bracket part 8 provided at a furnace shell. In the heating furnace using the radiant tube, bracket parts 9 and 8 are vertically and symmetrically arranged at an upper bent part 5 and a lower bent part 7 of the radiant tube, connection support means 12 for connecting and supporting the brackets is provided between the upper bent part 5 and the lower bent part 7, and an intermediate bent part 6 is directly or indirectly supported to a wall at the side of an exhaust opening. |
