Accurate temperature measurement in household kettles

A - Human Necessities – 47 – J

Patent

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Details

A47J 27/21 (2006.01)

Patent

CA 2723090

A vessel for the preparation of heated water or liquid based material includes a container for the liquid, an electric heater and a temperature sensing probe mounted through a wall or base of the container. The probe Includes an efficient heat transferring structure in direct thermal contact with and wet by the liquid inside the container. An electrical sensor within the probe is an intimate thermal contact with the efficient heat transfer structure and has electrical properties which directly correlate with the temperature of the heat transferring structure. The heat transferring structure is attached to a supporting structure mounted to the wall or base by an elastomeric efficient thermal insulating material held in compression to provide physical support for the probe and to seal the wall from leaking and to Insure that the sensor is primarily thermally responsive to the temperature of the heat transferring surface and to the liquid.

Un récipient pour la préparation deau chaude ou dune substance à base de liquide comprend un contenant pour liquide, un dispositif chauffant électrique et une sonde de détection de température installée à travers la base ou une paroi dudit contenant. Ladite sonde possède une structure de transfert de chaleur efficace, qui est placée en contact thermique direct avec le liquide situé dans le contenant, et qui est mouillée par celui-ci. Un capteur électrique situé dans la sonde est en contact thermique étroit avec la structure de transfert de chaleur efficace, et possède des propriétés électriques qui sont en corrélation directe avec la température de ladite structure de transfert de chaleur. Cette dernière est fixée à une structure support installée sur la base ou sur la paroi grâce à un matériau élastomère thermo-isolant efficace, qui est comprimé pour soutenir la sonde, empêcher les fuites dans la paroi et aider le capteur offre une réaction thermique appropriée à la température de la surface de transfert de chaleur ainsi quau liquide.

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