E.g.o. Elektro-geraetebau Gmbh

E.g.o. Elektro-Gerätebau Gmbh

Christian Egenter

Max-Felix Mueller

Wilfried Schilling

Marcus Frank

Mathias Bellm

Werner Kappes

Ulrich Waechter

Stefan Westrich

Michael Rupp

Stephane Lomp

Timo Dalaker

Uwe Schaumann

Kay Schmidt

Michael Riffel

Elmar Herweg

Oliver Gremm

Ralf Pawlowitsch

Jochen Rickert

Thomas Haag

Michael Eberle

Hartmut Friedrich

Michael Stoeffler

Thorsten Grunow

Klaas Lulofs

Ulrich Wächter

Jan Draak

Marius Lehner

Gabriel Rupp

Robin Goebel

Matthias Mangler

Juergen Katzenmayer

Alfred Fischer

Wolfgang Mohr

Sebastian Stadtmüller

Michael Stöffler

Christian Goetze

Etienne Fuchs

Max-Felix Müller

Robin Göbel

Karl-Heinz Vötter

Adelheid Hellemann-Kleck

Beate Schmid

Georg Florl

Christian Götze

Method of operating an apparatus for wirelessly transmitting electrical power in the direction of an electrical consumer by means of inductive coupling, wherein the apparatus comprises:

Method of operating an apparatus for wirelessly transmitting electrical power in the direction of an electrical consumer and system

A device () for wirelessly transferring power toward a consumer () by way of inductive coupling, wherein the device () has:

Device for wirelessly transferring power toward a consumer by way of inductive coupling

A method for operating a system having a device for the wireless transmission of energy to an electrical consumer by means of inductive coupling, and an electrical consumer, wherein the device has: a rectifier for generating a DC voltage from a line voltage, an inverter which is fed from the DC voltage and designed to generate a pulse-width-modulated activation signal, a power coil activated by the pulse-width-modulated activation signal, by means of which an alternating magnetic field can be generated to transmit the energy, a communication device designed to exchange data bi-directionally with the electrical consumer, and a regulator designed to regulate a power output by the inverter to a predetermined setpoint, and wherein the electrical consumer has: a switching device for changing the load impedance of the electrical consumer, and a communication device designed to exchange data bi-directionally with the device, wherein the method comprises the steps: synchronizing the operation of the device and the operation of the electrical consumer in such a way that, during a change in the load impedance of the electrical consumer, a transition frequency and/or a transition duty cycle of the pulse-width-modulated activation signal is/are set in such a way that voltages and/or currents induced in the electrical consumer do not exceed and/or fall below specified threshold values.

Method for operating a Ki system

A method is provided for operating a device for wireless transfer of energy in the direction of an electrical consumer via inductive coupling. The method involves sequentially carrying out a power transfer, a data exchange, a measurement of setup parameters, and a measurement of a resonance frequency, wherein during the power transfer, an electrical actual power emitted by an inverter is regulated to a predetermined electrical setpoint value, wherein during the data exchange, data are exchanged between the device and the electrical consumer via a communication unit, wherein during the measurement of the setup parameters, objects possibly arranged over a power coil are detected, wherein during the measurement of the resonance frequency, a resonance frequency of a resonant circuit having the power coil is ascertained, and wherein the measurement of the resonance frequency is executed immediately before or immediately after the measurement of the setup parameters or the data exchange.

Method for operating a device for wireless transfer of energy in the direction of an electrical consumer by means of inductive coupling and device

A method for operating an induction hob (), wherein the induction hob () comprises: an inverter (), which is supplied with a supply voltage (US), at least one capacitor (), and an induction heating coil (), wherein the at least one capacitor () and the induction heating coil () are interconnected such that they constitute an oscillating circuit (), and wherein the inverter () is configured to generate a pulse-width modulated excitation voltage (UA) for the oscillating circuit () from the supply voltage (US), wherein the method comprises the following steps: a) generation of the pulse-width modulated excitation voltage (UA) having a predefined voltage characteristic, b) measurement of a resulting oscillating circuit current (iS), particularly by means of the induction heating coil (), c) determination of electrical oscillating circuit parameters, according to the voltage characteristic of the pulse-width modulated excitation voltage (UA) and the measured oscillating circuit current (iS), d) n-times repetition of steps a) to c) using a different voltage characteristic of the excitation voltage (UA) for the determination of electrical voltage characteristic-dependent oscillating circuit parameters, and e) determination of operating variables of the induction hob () from voltage characteristic-dependent electrical oscillating circuit parameters.

Method for operating an induction hob and induction hob

A method for controlling an induction coil on an induction hob involves a power generation for a primary power on the induction coil for power transmission to an electrical consumer put onto a cover above the induction coil, which consumer has a receiver coil and an electrical load connected thereto, being adjusted. The induction coil forms a primary-side resonant circuit with a capacitance connected in series, and the induction coil and the receiver coil are coupled in the style of a transformer such that a current in the induction coil induces a voltage in the receiver coil with a flow of current and generation of the secondary power in the load of the electrical consumer. The control means can attempt to adjust the desired secondary power to a steady state using maximum modulation of the voltage effectively applied to the primary-side resonant circuit, as second manipulated variable. The primary power is decreased in a first step by virtue of the voltage effectively applied to the primary-side resonant circuit, as second manipulated variable, being decreased before the operating frequency as first manipulated variable is increased in a second, subsequent step.

Method for controlling an induction coil, and induction coil apparatus

Method for operating an apparatus for wirelessly transferring energy in the direction of an electrical consumer by means of inductive coupling, wherein the apparatus comprises:

Method for operating an apparatus for wirelessly transferring energy in the direction of an electrical consumer by means of inductive coupling, apparatus and system

A hob plate above a radiant heating device and a safety temperature limiter between said radiant heating device and hob plate, which safety temperature limiter is designed to deactivate the radiant heating device when a switch-off temperature is reached. To actuate the radiant heating device, a cooking vessel is first placed on the hob plate above the radiant heating device and then the radiant heating device is activated and at the same time detection of a first switch-on time starts. When a switch-off temperature is reached at the safety temperature limiter, the radiant heating device is deactivated by said safety temperature limiter. The first switch-on time that has elapsed up to that point between activation and deactivation of the radiant heating device is detected and compared with a predefined limit switch-on time. If the first switch-on time lies below the limit switch-on time the radiant heating device is switched off.

Method for actuating a heating device of a hob, and hob

In a method for controlling a cooking appliance having heating devices and an internal cooking appliance controller by means of an external control device which is arranged outside the cooking appliance and may be a mobile telephone, this external control device provides the cooking appliance controller with control commands. The external control device is classified by the cooking appliance controller either as an automatic control device or as a manual control device, wherein its control commands are implemented by the cooking appliance controller after the classification. A check is carried out continuously or at intervals during operation of the cooking appliance in order to determine whether the classification still applies.

Method for controlling a cooking appliance using an external control device, cooking appliance and system

In order to heat water in a cooking vessel which is placed above at least one induction heating coil of an induction hob, a controller drives the induction heating coil with a prespecified relatively high power density. During the heating, operating parameters of the induction heating coil are detected and evaluated by the controller in order to monitor a relative temperature profile of the temperature of a cooking vessel base. As soon as this relative temperature profile levels off to a considerable extent or a gradient of the relative temperature profile decreases, the controller identifies this and determines this as the situation of a 'lightly boiling' state and of a temperature of a top side of the cooking vessel base which is 5&#xb0; C. to 15&#xb0; C. below the boiling point being reached. The power density is then automatically reduced for a predetermined hold time, wherein an operator can maintain this state or, after a certain time, heating up can be performed to a greater extent again automatically.

Method for operating an induction hob, and induction hob

An induction hob has a hob plate, a plurality of induction heating coils arranged under the hob plate and a plurality of sensor coils arranged under the hob plate. The induction heating coils are rectangular, wherein at least two induction heating coils are arranged one behind the other and at least three induction heating coils are arranged one next to the other. Two adjacent induction heating coils form an adjacent region with one another in which the two induction heating coils lie with their adjacent sides. At least one sensor coil is arranged in each adjacent region, wherein precisely a single sensor coil is provided in a spacing direction from the one induction heating coil to the adjacent induction heating coil.

Induction hob and method for controlling an induction hob

An induction hob has a hob plate, a plurality of induction heating coils which are arranged below the hob plate, and a plurality of sensor coils which are arranged below the hob plate and above the induction heating coils, and also temperature sensors. The sensor coils and the temperature sensors are arranged on a flexible support and electrical conductors make electrical contact with the sensor coils on the flexible support. The flexible support has a single common connection device for electrical contact to be made.

Induction hob and flexible support for an induction hob

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

Growing community of inventors

Bretten, Germany

Christian Egenter