Method and device for drying sheets of drywall

A device for drying sheets, comprising:

• a feed device for feeding sheets, arranged in tiers, through the device with a main drying stage 20 and a final drying stage 21
• with at least two drying chambers 43 in each case
• wherein each drying chamber has nozzle boxes which are arranged in tiers transversely to the transporting direction
• with circulating air passages, arranged in the chambers 43, with feed means and heating devices for the circulating air, and also means for feeding feed air and means for discharging exhaust air
• wherein
• a feed device is arranged between the main drying stage 20 and the final drying stage 21 and directs exhaust air from the main drying stage 20 into the final drying stage 21.
• A single drying chamber, and/or a plurality of drying chambers, but at most half of the drying chambers 43, is or are equipped with controllable feed devices, with which the exhaust air from the main drying stage 20 is apportioned to these.
• A single drying chamber, and/or a plurality of drying chambers, but at most the second half of the drying chambers, is or are equipped with controllable discharge devices, with which the exhaust air from the final drying stage 21 can be extracted from these.
• The feed device between the main drying stage 20 and the final drying stage 21 is equipped with a transporting means.
• In the final drying stage 21 on the suction side of the drying chamber 43, the boundary surfaces are open to the adjacent drying chamber 43 of the same section.