| 摘要 |
The invention relates to a device for cooling glass sheets using jets of air emitted by at least one pipe-shaped nozzle, including a casing (4) supplying air to said nozzle, the air flow ejected via the ejection opening (3) of the nozzle consecutively passes through a tapered portion (1), the inner cross-section of which decreases in the direction of flow, then through a cylindrical portion (2) including the ejection opening, wherein the inner cross-section of said cylindrical portion corresponds to the smallest cross-section of the tapered portion and to the inner cross-section of the ejection opening, wherein the length of the cylindrical portion of the nozzle is greater than six times the diameter of the ejection opening. Said device provides high heat exchange during the cooling of glass sheets, thus making it possible to increase the reinforcing effect on the glass and/or to reduce the power of the fans used for conveying the air through the nozzles. |
