| 摘要 |
The invention concerns an arrangement for reversal of air flow produced by means of at least one blower 20. A drum 23 rotatable around its longitudinal axis 24 is arranged around the blower or blowers, said drum having openings 25, 26 on its outer surface to permit air flow through the drum. Drum 23 extends from the floor of the drying chamber to the ceiling or is connected in another way on its ends. By rotating drum 23 around its longitudinal axis 24 between two different positions reversal of the air flow directions in the drying chamber is produced in a very simple manner although the blower is arranged stationary and drives the air in the same direction the entire time. A heat battery 21 is arranged on the suction side of blower 20. <IMAGE>
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