Apparatus and method for the uniform drying of board materials

Details Apparatus and method for the uniform drying of board materials Apparatus and method for the uniform drying of board materials

F - Mech Eng,Light,Heat,Weapons

27

B

F27B 9/06 (2006.01) F27B 9/00 (2006.01)

Patent

CA 2668451

Disclosed is an apparatus and method for the uniform drying of boards, such as gypsum wallboards. The apparatus includes a dryer through which a series of boards are conveyed in a side-by-side relationship. While in the dryer, heated air is delivered over the boards via a series of separate air channels. A bypass duct delivers a portion of or a totality of unreheated air to the outermost channels where the cooler air displaces a volume of the warmer air. As a result, the air in the outermost channels is cooler than the air in the interior channels. Air from the outermost channels is then directed over the exposed longitudinal edges of the boards.

L'invention concerne un appareil et un procédé pour le séchage uniforme de plaques, telles des plaques murales en gypse. L'appareil comprend un séchoir à travers lequel est transportée une série de plaques côte à côte. Dans le séchoir, de l'air chaud est fourni sur les plaques par une série de canaux d'air séparés. Un conduit de dérivation fournit une partie ou la totalité de l'air non réchauffé vers les canaux les plus extérieurs où l'air plus frais chasse l'air plus chaud. Par conséquent, l'air dans les canaux les plus extérieurs est plus frais que l'air dans les canaux intérieurs. L'air des canaux les plus extérieurs est alors dirigé par-dessus les bords longitudinaux exposés des plaques.

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