Device for producing a multi-component mixture and method for operating said type of device

A device for producing a multi-component mixture, the device comprising a mixing chamber and a mixing device, wherein the mixing device has a stirrer which is arranged in the mixing chamber and is rotatably driven about an axis of rotation (L), wherein a temperature control channel system through which a temperature control medium can flow is arranged inside the stirrer for the purpose of controlling the temperature of the stirrer;

• wherein the temperature control channel system comprises:
• (i) a temperature control lance that is arranged in a cavity of the stirrer, wherein the temperature control lance includes outer walls defining an interior space, a pipe positioned within the interior space, a supply flow portion within the interior space but outside of the pipe for receiving a supply of the temperature control medium, and a return flow portion inside the pipe for receiving a flow of the temperature control medium from the supply flow portion;
• or
• (ii) a heat pipe that is arranged in a cavity of the stirrer, wherein the heat pipe includes outer walls defining an interior space that represents a closed system relative to the cavity of the stirrer for containing a working medium for transferring heat to the stirrer.