Device and method for the continuous heating of a liquid to...

A - Human Necessities – 47 – J

Patent

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A47J 31/46 (2006.01) A47J 31/54 (2006.01)

Patent

CA 2390225

The invention relates to a device for the continuous heating of a liquid to a constant temperature, particularly for domestic applications and more specifically for preparing coffee, comprising a reservoir (1) of water at ambient temperature, a pump (2), a heating body (3) whose electrical power supply is controlled by a switch, and a user outlet (15) for liquid at the desired temperature. It comprises a device (16, 22, 24) for regulating the flow rate of cold water delivered by the pump (2) to the heating body (3) controlled by the temperature of the liquid leaving the heating body (3) and a device (16a, 29, 28) for recirculating water leaving the heating body (3) to the reservoir (1) or to the inlet side of the pump (2) for as long as this water has not reached a minimum pre-established operating temperature, the recirculation device also being controlled by the temperature of the water leaving the heating body (3). It comprises a rated valve (4) on the user liquid outlet (15).

Cette invention a trait à un appareil permettant de chauffer continûment un liquide à une température constante, notamment à des fins domestiques et, plus précisément pour la préparation de café. Cet appareil comporte un réservoir (1) d'eau à température ambiante, une pompe (2), un corps de chauffe (3) dont l'alimentation en électricité est commandée par un commutateur et une sortie (15) distribuant un liquide à la température souhaitée. Il est équipé d'un dispositif (16, 22, 24), permettant de réguler le débit d'eau froide délivrée par la pompe (2) au corps de chauffe (3), commandé par la température du liquide sortant du corps de chauffe (3), et d'un dispositif (16a, 29, 28) faisant recirculer l'eau sortant du corps de chauffe (3) vers le réservoir (1) ou le côté entrée de la pompe (2) tant que l'eau n'a pas atteint une température minimale prédéterminée de fonctionnement. Ce dispositif de recirculation est également commandé par la température de l'eau sortant du corps de chauffe (3). La sortie de liquide (15) est pourvue d'une soupape étalonnée (4).

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