| 摘要 |
A nozzle housing assembly, which is used in a convection heating furnace for a heat treatable glass sheet. The nozzle housing assembly (1) comprises an elongated enclosure (2), at least one elongated heating resistance (3) in the enclosure (2) for heating convection air, and orifices (4) in a bottom surface of the enclosure for blasting heated convection air against the glass sheet. The enclosure (2) is divided with a flow-throttling partition (5) into a top supply duct (6) and a bottom nozzle box (7), the heating resistances (3) being housed in the latter. Flow-throttling openings (8) present in the partition (5) are positioned to comply with the location and shape of the heating resistances (3). |
