Heat chamber furnace for heat treatment with gaseous atmosphere quenching

Furnace for thermal treatment with gaseous atmosphere quenching consisting of a bell inside which there is provided a rotor regulating the gas atmosphere flow, a heat exchanger regulating the temperature of the gas atmosphere and a thermal chamber configured for thermal treatment and the following gaseous atmosphere quenching, said thermal chamber consisting of a surface positioned on a side adjacent to the heat exchanger and a surface positioned on an opposed side to the surface adjacent to the heat exchanger and wherein a surface consists of a plurality of screens which connect the inside of the thermal chamber with the inside of the bell to allow the passage of the gas atmosphere from the thermal chamber to the bell, wherein said screens are adjustable to modify the passage section and so the flow of the gas atmosphere in function of the temperature required by the thermal treatment, and wherein said screens are hinged to said surface of the thermal chamber positioned on a side adjacent to the heat exchanger.