Patent ID: 7748237

Claim:
A convection glass furnace comprising: a housing having a glass inlet receiving glass plates for treatment and a glass outlet outputting treated glass plates; a roller table transporting glass plates through said housing for treatment; a plurality of gas collection boxes disposed above and below said roller table, each gas collection box being a sealed enclosure having: a cold gas inlet; an exhaust outlet; a heating device disposed in said sealed enclosure, said heating device receiving cold gases from said cold gas inlet and heating said cold gases to form hot gases; a jet-flow plate formed on said sealed enclosure and disposed adjacent to said roller table and having a plurality of hot gas outlets arranged to blow said hot gases toward said glass plates to heat said gas plates, said jet-flow plate further having a plurality of exhaust gas inlets collecting exhaust gases from said glass plates; and a suspension mechanism and an upper and lower body with at least one gas collection box being disposed in each of said bodies and, wherein said gas-collection box in the upper furnace body can be moved up and down by said suspension mechanism relative to the glass plates; wherein said exhaust gases are passed through said sealed enclosure to said cold gas inlet.