METHOD FOR IMPROVING AN AIR CIRCULATION AND A WAY FOR HEATING AIR IN A GLASS TEMPERING OVEN

摘要

Method for tempering glass in an oven (1) in which oven the glass (G) is moved while resting on rolls (4) in horizontal plane and of heating of the glass a significant part occurs with convection air which is circulated with the help of one or several blowing units (BU) which air is heated with heating resistors (5) which are located inside a blowing chamber (3) and are mainly located in longitudinal direction regarding the oven after which the air is blown towards the glass (G) through nozzle rows (6n). A roll space (8) and a suction space (7) are separated with the help of pressure from each other by extending the length of a plate (9) and width measures to be essentially larger than the length and/or the width of the blowing chamber (3) or by arranging an element (7co), (7cov), (9e) of other kind which constricts the flow of the air between the roll space (8) and the suction space (7) thanks to which elements the underpressure of the suction space (7) has an effect totally or at least for the most part on suction channels (7c), (7ce) or has an effect on a suction space (7i) and only a little bit on the roll space (8) in which case the convection air is sucked at least mainly from the roll space through the mentioned suction channels and the suction space.

主权项

1. Method for tempering glass in an oven (1) in which oven the glass (G) is moved while resting on rolls (4) in horizontal plane and of heating of the glass a significant part occurs with convection air which is circulated with the help of one or several blowing units (BU) which air is heated with heating resistors (5) which are located inside a blowing chamber (3) and are mainly located in longitudinal direction regarding the oven after which the air is blown towards the glass (G) through nozzle rows (6n), characterized in that a roll space (8) and a suction space (7) are separated with the help of pressure from each other by extending the length of a plate (9) and width measures to be essentially larger than the length and/or the width of the blowing chamber (3) or by arranging an element (7co), (7cov), (9e) of other kind which constricts the flow of the air between the roll space (8) and the suction space (7) thanks to which elements the underpressure of the suction space (7) has an effect totally or at least for the most part on suction channels (7c), (7ce) or has an effect on a suction space (7i) and only a little bit on the roll space (8) in which case the convection air is sucked at least mainly from the roll space through the mentioned suction channels and the suction space.