Accurate temperature measurement in household kettles

摘要

A vessel for preparing heated water or other liquid includes a container, an electric heater and a temperature sensing probe mounted through a wall of the container. The probe includes an efficient heat transferring structure in direct thermal contact with and wet by the liquid. An electrical sensor within the probe is in intimate thermal contact with the transferring structure and has electrical properties directly correlating with the temperature of the transferring structure. The transferring structure is attached to a supporting structure mounted to the wall by an elastomeric efficient thermal insulating material held in compression providing physical support for the probe and sealing the wall from leaking and insuring that the sensor is primarily thermally responsive to the temperature of the transferring surface and to the liquid but is thermally insulated from variations in the temperature of the supporting wall.