APPARATUS FOR COOLING METAL IN SINGLE-STACK HOOD-TYPE FURNACE Russian patent published in 1999 - IPC

FIELD: thermal treatment of roll of cold-rolled strip of tin. SUBSTANCE: apparatus has portable construction, ejector air fan common for the whole section, pipeline with valves for supplying air to stand, annular collector embracing muffle from the bottom and provided with supports, flexible hose and flange for connecting with riser of ejector air fan. Pipeline is further provided with vertical risers mounted in parallel with muffle generatrix and having openings oriented to muffle. Vertical guides and bearing vertical pipes are connected with annular collector having two diametrically arranged plugs. Collector is connected with ejector air conduit through two branch pipes via powered valve and time relay. Risers have slit openings faced to muffle surface. Bearing vertical pipes have openings positioned above riser cut in staggered arrangement. Horizontal pipes have plugs positioned at points of attachment of these plugs to eyelet platform and are provided with slit openings positioned at both sides in axial alignment with pipe. EFFECT: intensified cooling of metal in furnace, simplified construction and enhanced reliability in operation. 2 dwg