Air overheating device for chambers hood, includes vertical wide conduit whose mouth splays towards front inside hood and base opens in tubes that cross furnace

摘要

The device has a vertical wide conduit (6) whose mouth splays towards front inside a hood (1) and base opens in tubes (7) that cross a furnace (4). An opening of the hood is closed by a shutter (2) that controls the starting of a turbine. The turbine delivers cold air that is heated by the furnace. The tubes are fixed in holes pierced in front and rear walls of the furnace.