| 摘要 |
A preheater (12) preheating flat glass sheets prior to further heating to a higher temperature is disclosed as including a conveyor (18) and a pair of opposed forced convection heaters (20) that each include a plurality of elongated housings (22) having a baffle (30) that extends diagonally between the housing ends (26) and is spaced from outlets (28) of the housing to provide a mixing chamber (32) that results in mixing of hot gas supplied from opposite directions to plenum of the housing. This mixing provides a uniform flow of hot gas through the outlets (28) between the housing ends and thereby provides uniform preheating of the glass sheet over its entire extent.
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