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 for a heat treating of annealing stock, wherein the furnace comprises a closeable first furnace chamber which is designed for receiving and for heat treating of annealing stock by means of thermally interacting the annealing stock with a heatable or coolable first annealing gas in the first furnace chamber, and a removable first protective hood by means of which the first furnace chamber can be closed. Further, a first heat exchange device which is at least partially located in the interior of the first furnace chamber closed by means of the first protective hood is provided for heat exchanging with the first annealing gas within the first protective hood. The heat exchange device is arranged in such a manner relative to a first annealing gas ventilator for driving the annealing gas that, in each operating state of the furnace, the annealing gas driven by the first annealing gas ventilator blows against the heat exchange device.