BELL-TYPE FURNACE WITH A HEAT DISPENSING DEVICE POSITIONED WITHIN A PROTECTIVE HOOD, IN PARTICULAR FED BY AN ENERGY SOURCE EXTERNAL TO THE FURNACE CHAMBER, FOR DISPENSING HEAT TO ANNEALING GAS

摘要

A furnace (100) for the heat treatment of annealing stock (102), wherein the furnace (100) has a closeable first furnace chamber (104) which is designed for receiving and for the heat treatment of annealing stock (102) by means of thermal interaction of the annealing stock (102) with a heatable or coolable first annealing gas (112) in the first furnace chamber (104), and a removable first protective hood (120) by means of which the first furnace chamber (104) can be closed. Furthermore, a first heat exchange device (108) which is at least partially located in the interior of the first furnace chamber (104) closed by means of the first protective hood (120) is provided for heat exchange with the first annealing gas (112) within the first protective hood (120). The heat exchange device (108) is arranged in such a manner relative to a first annealing gas ventilator (130) for driving the annealing gas that, in each operating state of the furnace (100), the annealing gas driven by the first annealing gas ventilator (130) energizes the heat exchange device (100).