Printing press with a dryer system and method for the operation of a dryer of a printing material be - and / or processing printing press

摘要

Printing press with at least one printing unit (02), by means of which a web of printed material (11) a - or both sides a - or more colors can be printed, and a dryer system with a dryer (03), by means of which the printing material (11) can be guided, and in the case of the passing to the drying in the dryer interior with hot air dryer can be brought into contact, whereby for heating the dryer inlet air at least a first heat exchanger (16) being provided, by means of which on the cold side, at least a part of the in the dryer (03) of the dryer inlet air to be guided as a supply air stream (14), and on the hot side, a in the heat exchanger (16) to be heated heat to the dryer inlet air donating, different heating fluid from a dryer exhaust air is guided, characterized in that the dryer (03) at least one heating zone (36) and at least one a to the heating zone (36) in the downstream direction of the printing material path comprises the cooling zone (37), that the cooling zone (37) by means of a second dryer inflow (23) dryer inlet air is supplied to a second temperature which is lower than the temperature of the dryer inlet air of the at least one heating zone (36) and which by means of the first heat exchanger (16) heated dryer inlet air of a heating zone (36) of the dryer (03) is supplied, and that a dryer exhaust air current (39) from the cooling zone (37), as a whole, or at least partially to the heat exchanger (16) as a supply air stream (14) or at least as part of the feed air stream (14) is fed to.