A horno of thermal treatment in controlled atmosphere equipped with a tunnel. (Machine-translation by Google Translate, not legally binding)

摘要

The present invention improves these two design deficiencies by first having a separate atmosphere producing system that is constantly igniting independently of the temperature control system, and having, secondly, a cooling system that only extracts the excess heat produced. By combustión for the atmosphere. The invention uses a conventional burner system of the type hitherto used only externally to the furnace, but places such a burner system internally in the furnace. This burner system is constantly ignited irrespective of the oven temperature control system. The control of the ratio to produce the desired inert annealing atmosphere is achieved in the same way and with the same reliability as with the voncenvional external burner system. Since the burner system is exothermic and placed inside the furnace, the heat produced by it increases the temperature of the furnace, and by appropriate pre-adjustment of the burners, the desired temperatures in the various furnace zones can be maintained in normal operation. When the work load of cogre that passes through the oven is at an optimum level. If, during operation, the temperature of any zone is above or below that desired for the annealing operation, an adjustment and regulation is obtained by auxiliary heating and/or cooling means that are automatically operated by the system. Temperature control. In this way, appropriate temperatures can be maintained in the furnace without continuously regulating the gas ratios for the atmosphere-producing burners. The objects of the invention and the advantageous results obtained therewith will be explained in more detail after describing a preferred embodiment. (Machine-translation by Google Translate, not legally binding)