The temperature control unit is a self-venting system. It includes a pump, heating and cooling and serves as a container for the heat transfer medium. The heat transfer medium is regulated to a predetermined temperature value, which is measured via a temperature sensor at the flow connection of the temperature control unit. Optional, the temperature can also be controlled using an external temperature sensor, which is located, for example, in the injection molding tool. The temperature controller switches on the heating and cooling of the unit accordingly until the heat transfer medium has reached the specified temperature. This temperature is kept constant. Using a pump, the heat transfer medium circulates in an external circuit (e.g. Injection molding tool). The pump speed can be variably adjusted via the frequency converter. As a result, the external flow rate can be adapted to requirements. The cooling process is carried out via a heat exchanger, through which cold water flows. The cooling water is supplied via the cooling water connection.

heat transfer medium

Water is used as a heat transfer medium. It is automatically supplied to the temperature control unit via the cooling water inlet or system water inlet. The heat transfer medium water is in a closed circuit without oxygen contact in order to largely prevent oxidation. Water above 100 °C is under increased pressure (e.g. 4 bar at an operating temperature of 140 °C). To prevent evaporation, the pressure prevailing in heat transfer circuit is raised accordingly.