Process and apparatus for non-thermal drying of objects freshly painted with a water-based paint, in particular car bodies

摘要

The objects (2) to be dried are forced-convectively charged with dry air in a drying tunnel (1) and the moisture-laden air is condensatively dried in an air drying device (11) to a specific target value of absolute residual moisture. In order to be able to regulate fluctuations in the moisture supply with low inertia, only a portion of the circulated air, the size of which is adjusted as required, is dried in the air drying device (11) with a consistently high condensation capacity to a residual moisture which is well below the target air circulation humidity, and the remaining, untreated part of the circulated air after mixing with the dried partial air stream is returned to the dryer housing (1). IMAGE