E.g.o. Elektro-geraetebau Gmbh

E.g.o. Elektro-gerätebau Gmbh

E.g.o. Elektro Gerate Blanc U. Fischer

E.g.o. Regeltechnik Gmbh

Wilfried Schilling

Ralf Dorwarth

Werner Kappes

Robert Kicherer

Eugen Wilde

Stefan Westrich

Martin Volk

Tobias Schönherr

Michael Riffel

Andreas Kleinhans

Bernhard Goetz

Oliver Gremm

Nils Platt

Wilhelm Perrin

Uwe Schaumann

Gerhard Goessler

Martin Baier

Christian Egenter

Volker Brennenstuhl

Lutz Ose

Hans Mohr

Konrad Schoenemann

Uwe Winkler

Mathias Bellm

Erich John

Friedrich Koch

Siegbert Berger

Thomas Haag

Konrad Schönemann

Michael Stoeffler

Joerg Boegel

Juergen Katzenmayer

Alfred Fischer

Norbert Gärtner

Paul-Peter Wilhelm

Juergen Schwackenhofer

Sebastian Stadtmüller

Uwe Kreiter

Siegberg Lorenz

Norbert Dr Gärtner

An induction heating device comprises a frequency converter that generates a high-frequency drive voltage from an intermediate circuit voltage generated at least temporarily as a function of an AC mains voltage, a resonant circuit having an induction heating coil, with the drive voltage applied to the resonant circuit, and a temperature detection device that determines a temperature of a cooking vessel base which is heated by means of the induction heating coil. An auxiliary voltage source generated the intermediate circuit voltage over predefined time periods at a constant level. The frequency converter generates the drive voltage over time periods such that the resonant circuit oscillates at a natural resonant frequency in a substantially de-attenuated manner, and the temperature detection device further measuring at least one oscillation parameter over the time periods, and to evaluate the at least one measured oscillation parameter in order to determine the temperature.

Method and induction heating device for determining a temperature of a cooking vessel base

A method for heating a cooking vessel utilizing an induction heating device is provided. According to various aspects, the induction heating device includes a resonant circuit with an induction heating coil. A specified amount of energy may be supplied to the cooking vessel with the induction heating device depending on a heating power level selected by a user and/or on a cooking vessel type selected by the user. A parameter value of the resonant circuit which is dependent on a temperature of the cooking vessel, in particular of the bottom of the cooking vessel, may be determined and stored. The parameter value may be regulated to a setpoint which is dependent on the stored parameter value.

Method for heating a cooking vessel with an induction heating device and induction heating device

A method and apparatus for preparing foodstuffs cooked in a liquid in a cooking vessel is provided. According to various aspects, an induction heating device includes a resonant circuit with an induction heating coil. A parameter value of the resonant circuit may be determined, depending on a temperature of a bottom of the vessel. During a heating-up phase, a high-frequency rectangular voltage may be applied to the resonant circuit to supply heating power to the bottom of the vessel. A heating power setpoint may be periodically varied and may be set to a first value during a first interval of a period, and set to a second, smaller value during a remaining interval. A determination of a change in the parameter value within the period may be made, and an evaluation of the change in order to determine the boiling point of the liquid and end the heating-up phase.

Method for induction heating and induction heating device

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.

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

A gas oven has an oven muffle and a gas burner for said oven muffle. The gas oven has a thermogenerator for generating electrical energy during operation of the gas burner for the purpose of supplying electrical energy to an electrical functional unit, for example for supplying said electrical energy to a fan or a control of the gas oven. In this case, the thermogenerator is designed and arranged to be heated, and for heat to be introduced by the gas burner.

Gas oven

The invention may enable provision of a method for facilitating operation of an induction heating device, and a pot detection method for an induction heating device and to an induction heating device. The induction heating device is characterized by determining a low point of a resonant cycle on a linking node of a parallel resonant circuit and a switching element, determining a low point voltage at the low point of the resonant cycle and switching on the switching element at the low point of the resonant cycle for a cycle duration that is determined depending on the low point voltage in such a manner that a low point voltage does not exceed a predetermined maximum value in the following resonant cycles.

Induction heating device and associated operating and saucepan detection method

The invention relates to a method for operating an induction heating device. The induction heating device comprises an induction coil and a frequency converter for producing a control voltage for the induction coil. The frequency converter comprises a rectifier rectifying an alternating supply voltage (UN), an intermediate circuit capacitor, looped in between output terminals of the rectifier and equalizing the rectified voltage (UG), and at least one controllable switching element, looped in between the output terminals of the rectifier. According to the invention, in a predetermined discharge interval (INT) before a zero crossing (ND) of the alternating supply voltage (UN), the intermediate circuit capacitor is discharged to a threshold value by controlling the at least one switching element before the induction coil is controlled in order to produce an adjustable heating capacity.

Method for operating an induction heating device

A gas burner module for a gas cooktop has a gas burner with an ignition and monitoring electrode, and also ignition and control electronics, a flame monitoring device and a gas valve. A burner foot in the form of a base is provided as a supporting element of the gas burner module. These parts of the gas burner module are combined to form a unit and are mechanically connected to one another in such a way that they form a constructional unit which can be handled independently.

Gas burner module for a gas cooktop, and gas cooktop

A method for regulating a cooking process of a cooking product in an oven of a steamer, during which the moisture in the oven coming from the cooking product is at least periodically determined over time by a moisture sensor. During a measuring phase there is no introduction of steam into the steam oven and the moisture sensor is evaluated. For a given cooking process with fixed times for the supply of steam, on the basis of the moisture sensor evaluation during the measuring phase, the end of cooking is determined. Prior to the measuring phase and during a steam phase, steam is introduced into the oven, the steam supply being terminated following the steam phase and prior to the measuring phase during a ventilating phase. During the ventilating phase the steam concentration in the oven is greatly reduced.

Method and steam cooking apparatus for regulating cooking processes in an oven

An induction heating device for a glass ceramic hob or cooktop is embodied as an autonomous component. Said induction heating device comprises a bearing device which, in addition to the induction coil, supports a component support comprising power electronics and control electronics. Only the control connections for the control signals in relation to the power of a line and a direct connection to the household power are provided on said induction heating device. The control electronics ensure the power of a line to the power electronics. Advantageously, said induction heating devices have external dimensions which are the same as traditional radiant heating bodies and thus can easily be used in lieu of said traditional radiant heating bodies when constructing said hob.

Induction heating device and hob having such an induction heating device

An operating control device, such as for an appliance, is disclosed comprising sensor elements with a capacitive sensing function, the elements being located underneath a metallic surface that is used as the operating field. An insulating layer is situated between the elements and the metallic surface. When pressure is applied to the metallic surface the capacitance of the sensor element is altered by capacitive coupling. This alteration of capacitance can be determined by a corresponding evaluation circuit or the like for detecting activation of the device.

Operating control comprising a capacitive sensor element and an electrical device comprising an operating control of this type

A controller of a hob is connected to a temperature sensor of a radiation based heating element. In principle, two different groups of temperature sensors can be used, whose resistance values differ by approximately a factor of three. When the hob is first used, the resistance of the temperature sensor is measured at room temperature and is classified in one of the two groups of temperature sensors on the basis of a limit value between the two typical temperature profiles of the groups of temperature sensors. On the basis of this, calibration of the controller is carried out for the purpose of adjusting to the established group to which the temperature sensor belongs.

Method and device for identifying a temperature sensor connected to a control unit

An elongate contact switch is disclosed having several partial contact areas and associated illumination means for indicating the actuation mode and also the actuation point to an operator, in order to increase operational effectiveness. The illumination means can be directly associated with individual partial contact areas or can indicate the progress of movements for operating the contact switch by applying a finger and pulling the same along a contact area. Moreover, malfunctions can be indicated to the operator.

Method for the optical marking of a touch contact switch and touch contact switch

A potentiometer (PTPT) has a first terminal (A), a second terminal (A) and an intermediate tap (ZA), a resistor being between the first terminal (A) and the second terminal (A) irrespective of the position of the potentiometer (PTPT). In an evaluation method, a first drive voltage (GND) and at least one second drive voltage (VS), which is different than the first drive voltage, are applied to the first terminal (A) and/or the second terminal (A) and/or a third drive voltage (VS) is applied to the intermediate tap (ZA). The evaluation can be made from the different measurement voltages measured at the terminals.

Method for evaluating a potentiometer and circuit arrangement having a potentiometer

A cooking hob has a cooking hob plate made of glass-ceramic and in which several individual heating units are provided that have a regular hexagonal shape and adjoin each other. Elongate illumination segments are disposed on the outer contours of said heating units. When the cooking hob is operated with several adjacent heating units as a connected heating area, the entire outer contour of said heating area is illuminated, thus indicating to the user which heating units are activated together.

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Kraichtal, Germany

Wilfried Schilling