Method for heating a liquid in a cooking vessel and induction heating device

摘要

A method for heating a liquid in a cooking vessel is provided. According to various aspects, an induction heating device includes a resonant circuit having an induction heating coil. A parameter value of the resonant circuit may be determined, depending on a temperature of the cooking vessel. A radio-frequency square-wave voltage may be applied at a predefined heating power setpoint value to the resonant circuit to supply heating power to the cooking vessel. The time profile of the parameter value may be evaluated for determining the boiling point of the liquid. After the boiling point has been determined, the heating power setpoint value may be reduced by a predefined amount over a predefined time period after which a current parameter value may be determined and stored. The parameter value may be adjusted to a setpoint value which is dependent on the stored parameter value.

主权项

1. A method for heating a liquid, which is contained in a cooking vessel, utilizing an induction heating device, the method comprising:
continuously determining a parameter value of a resonant circuit of the induction heating device, the resonant circuit comprising an induction heating coil, wherein the parameter value comprises a period duration of a naturally resonant oscillation of the resonant circuit, and wherein the parameter value depends on a temperature of a base of the cooking vessel; applying a radio-frequency square-wave voltage to the resonant circuit such that a heating power is supplied to the base of the cooking vessel at a heating power setpoint value; evaluating a time profile of the parameter value to determine a boiling point of the liquid; after the boiling point of the liquid has been determined, reducing the heating power setpoint value by a predefined amount over a predefined time period, wherein the predefined amount being reduced to a range of 10% to 50% of a maximum heating power setpoint value; after the predefined time period has elapsed, determining and storing a current parameter value; and adjusting the heating power setpoint value based on the stored current parameter value.