FURNACE DEVICE Russian patent published in 2000 - IPC

FIELD: power engineering, applicable for heating and drying of materials. SUBSTANCE: the furnace device has an injector torch, having a gas nozzle, mixer, extension piece and a torch stone, in addition it is provided with a metal sealed housing enveloping the torch and completely or partially installed in the furnace; the bottom of the sealed housing is positioned past the mixer, and its cover - before the torch gas nozzle; made inside the sealed housing are air tubes coaxially enveloping the injector torch, the inlets of the tubes come out of the cover into the atmosphere, and the outlets of the tubes are positioned near the bottom in a spaced relation. The cross-section of the tubes should be within 1 to 2 cross-sections of the mixer narrower part, and the space between the tubes and bottom should be within one to two diameters of the air pipes. EFFECT: expanded control range of thermal capacity. 2 cl, 1 dwg