Patent ID: 7371996

Claim:
A roller-equipped annealing lehr for flat glass ( 1 ), having a roller conveyor, which is accommodated inside a lehr housing, and having heating units ( 2 ) that are arranged in pairs above and below the roller conveyor, in rows situated one after another and extending transversely to the feed direction, and are associated with temperature regulators provided with actual temperature values that are measured in a position-dependent fashion and predetermined associated desired values wherein a feedback loop arrangement ( 3 , 4 , 5 ) is provided, which, for at least one pair of heating units ( 2 ) situated at a particular position in the row, presets as a control variable the heating output required to predetermine the temperature distribution in the region of this position as a predetermined portion of a heating output, which is calculated based on at least one actual temperature value measured at a different position in the row.