Continuous heating furnace

摘要

A continuous heating furnace includes a furnace main body, a conveyance unit configured to convey a baking object W in the furnace main body, a plurality of heating sections heated by combustion, each having a first radiation surface configured to be heated by combustion and transfers heat to the baking object conveyed by the conveyance unit and arranged in the conveyance direction of the baking object in the furnace main body, and a cooling preheater having a second radiation surface configured to receive radiant heat from the baking object when being opposite to the baking object conveyed by the conveyance unit and a gas flow path configured to preheat a gas used for combustion in the heating section by the heat from the second radiation surface.

主权项

1. A continuous heating furnace comprising:
a furnace main body; a conveyance unit configured to convey a baking object in the furnace main body; a plurality of heating sections heated by combustion, each having a first radiation surface configured to be heated by combustion and transfers radiant heat to the baking object conveyed by the conveyance unit, and arranged in a conveyance direction of the baking object in the furnace main body; and at least one cooling preheater having a second radiation surface configured to receive radiant heat from the baking object when the second radiation surface is opposite to the baking object conveyed by the conveyance unit, and a gas flow path configured to preheat a gas used for combustion in the heating section by heat from the second radiation surface, the second radiation surface being an external surface of the at least one cooling preheater, the gas flow path being formed inside the at least one cooling preheater, wherein the at least one cooling preheater is located between the plurality of heating sections, and the first radiation surface and the second radiation surface are disposed to adjoin in the conveyance direction of the baking object.