Patent ID: 6772610
Filing Date: 2004-08-10
Classification: C03B

Abstract:
A flat glass ribbon annealing lehr, including pre-annealing, annealing and post-annealing zones defined along an internal chamber of the lehr, and comprising:groups of cooling-air heat exchangers, producing heat exchange by radiation, selectively situated above and/or beneath the glass ribbon, within the internal lehr chamber and located in each of corresponding zones; a first single cooling-air intake manifold connected to groups of exchangers in the pre-annealing and annealing zones, which manifold is situated where the pre-annealing and annealing zones meet; and a second single cooling-air intake manifold connected to groups of exchangers in the annealing and post-annealing zones, which manifold is situated where the annealing and post-annealing zones meet.