Printing machine liq. tempering, using tempering liq. closed circuit

摘要

The tempering liq. circulates in the closed circuit (2). It moves liq. from a tempering unit (4) to a printing machine part (1) to be treated along a delivery line (6). From the machine part the liq. is returned to the mixt. along a return line (14). The liq. temp. is controlled by a thermostat (8). The thermostat switches the tempering unit according to required heating or cooling of the liq. to maintain a rated temp. In dependence on the instantaneous temp. in the delivery line, a certain part of the return line liq. is branched-off of the return line liq. and returned to the delivery line, by passing the tempering unit, for equalising the temp.