To provide a heat treatment device capable of suitably preventing ignition of a flammable material extracted from a workpiece W even while adopting a compact and inexpensive configuration.
A heat treatment device includes a treatment chamber 1a to which a workpiece W is supplied, a gas circulation path 2 which circulates a circulation gas G to/from the treatment chamber 1a, and a heating means 3 for heating the circulation gas G, and performs heating treatment of the workpiece W that is supplied to the treatment chamber 1a by heating the circulation gas G by the heating means 3. In the heat treatment device, the heating means 3 is constituted of a burner B for combusting fuel F and supplying a combustion exhaust gas E generated by the combustion to the gas circulation path 2.
Ichiro Miyake
Kunihiko Higashi