Nestec S.a.

Jean-Bernard Pulzer

Christophe Boussemart

Ruguo Hu

The invention relates to a liquid heating device, in particular for household application, mainly for preparing hot beverages comprising a body provided with a liquid flow channel which comprises a liquid inlet and outlet and is connected to at least one electrical heating body whose feeding is controlled by switching means connected to control means. The inventive device is characterized in that the channel consists of at least one first and second portions thereof which are connected to each other by a third channel portion forming a connection conduit, each first and second channel portion are associated with the heating body and the connection conduit is associated with an intermediate temperature sensor connected to said control means, wherein the temperature sensor is disposed in such a way that it is brought into contact with the liquid flowing in the channel and the control and switching means are configured in such a way that it is possible to control the heating body of said at least second channel portion according to the quantity of useful energy supplyable thereto in order to raise the intermediate temperature measured by the intermediate temperature sensor to a specified temperature.

Liquid heating device and method for heating a liquid

The invention relates to a liquid heating device, in particular for household application, mainly, for preparing hot beverages comprising a body provided with a liquid flow channel which comprises a liquid inlet and outlet and is connected to at least one electrical heating body whose feeding is controlled by switching means connected to control means. The inventive device is characterised in that the channel consists of at least one first and second portions thereof which are connected to each other by a third channel portion forming a connection conduit, each first and second channel portion are associated with the heating body and the connection conduit is associated with an intermediate temperature sensor connected to said control means, wherein the temperature sensor is disposed in such a way that it is brought into contact with the liquid flowing in the channel and the control and switching means are configured in such a way that it is possible to control the heating body of said at least second channel portion according to the quantity of useful energy supplyable thereto in order to raise the intermediate temperature measured by the intermediate temperature sensor to a specified temperature.

The present invention concerns a device for the heating of a liquid in a beverage machine comprising at least one set of at least two resistors, wherein said resistors are electrically linked together so as to use one resistor of each set individually or in serial with one or more of the resistors of the same set, at least one individual resistor and at least one set of two resistors, wherein said resistors are electrically linked together so as to use the first resistor of a set individually or in serial with one or more of the following resistors of the same set, said resistors transferring the maximum of energy to the flow of liquid and allowing a finer control of the liquid temperature.

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Fleurier, Switzerland

Jean-Bernard Pulzer