Patent ID: 11858843
Assignee: SEDAK GMBH & CO. KG
Field: Other special machines (Mechanical engineering)
Classification: CPC C | IPC C

Claim 9:
10. A method for annealing a glass pane, the method comprising:
transporting the glass pane horizontally on rollers;
providing flat vertical walls that run parallel to axes of the rollers, each of the flat vertical walls being arranged above the glass pane so as to extend to a distance of no more than 10 mm from the glass pane and a thickness of the flat vertical wall is less than a diameter of the roller;
guiding cooling air from first cooling air feeds, each of which is arranged between two of the rollers and runs parallel to the axes of the rollers, onto an underside of the glass pane, each of the first cooling air feeds extending over a width of the glass pane; and
guiding cooling air from second cooling air feeds, each of which is arranged between two of the flat vertical walls and runs parallel to the axes of the rollers, onto a top of the glass pane, each of the second cooling air feeds extending over a width of the glass pane,
wherein each of the first and second cooling air feeds comprises a nozzle having a slit with the nozzle becoming increasingly narrow in the direction toward the glass pane so as to form a flow channel extending across the width of the glass pane that is substantially “V”-shaped in cross-section and continuously tapers to where the cooling air emerges from the flow channel,
the cooling air from each of the first cooling air feeds strikes the underside of the glass pane, is deflected outward to both sides toward the rollers, and strikes the rollers and is diverted downward such that return of this cooling air occurs between the rollers and outer sides of the first cooling air feeds, and
the cooling air from each of the second cooling air feeds strikes the top of the glass pane, is deflected outward to both sides toward the flat vertical walls, and strikes the flat vertical walls and is diverted upward such that return of this cooling air occurs between the flat vertical walls and outer sides of the second cooling air feeds.