Electrolux Home Products Corporation N.v.

Electrolux Appliances Aktiebolag

Massimo Zangoli

Laurent Jeanneteau

Alex Viroli

Thibaut Rigolle

Massimo Nostro

Svend Erik Christiansen

Erik Svend Christiansen

Mario Barocci

Michael Herzog

Ulrich Häutle

Andrea Rossi

Filippo Martini

Filippo Milanesi

Fabio Angeli

Gerhard Klein

Nicola Terracciano

Chunlong Xu

Klaus Schlötterer-Fratoianni

Enrico Valentini

Claudio Paolini

Emanuel Urgese

Björn Leyh

Lukasz Wasinkiewicz

Thibaut Rogolle

Adriano Scotto D'Apollonia

Holger Wundling

Ulrich HÄUTLE

Luca Di Carlo

Diana Valerio

Jacek Jurek

Laurent Jeannetau

Pasquale Mei

Nicola Sparnacci

Simone Santilano

Michele Forti

Elia Schiaratura

Giacomo Corsi

Alan Mengozzi

The disclosure relates to a power supply circuit for a cooking device, in particular for an induction cooking device, more particularly for an induction hob, wherein the power supply circuit includes a single frequency adapting unit, in particular a filtering unit, for adapting at least one external supply signal into a single or at least one internal AC supply signal; at least one DC signal generating unit for converting the one or at least one internal AC supply signal into at least one signal component of an internal DC supply signal; and at least one heating frequency generating unit for converting one or at least one DC supply signal supplied by at least one DC signal generating unit into a heating frequency signal for supplying at least one heating unit with electrical power.

Power supply circuit for a cooking device and cooking device

The invention relates to a method for determining properties of the electrical current provided to an induction heating element () of an induction cooking appliance (). The induction cooking appliance () has a heating power energy unit () including a heating power generator () with at least one switching element () adapted to provide pulsed electric power to said induction heating element (). The induction cooking appliance () also has an oscillating circuit () with at least one resonance capacitor (). The induction heating element () is electrically coupled with the heating power generator () and the oscillating circuit (). The induction cooking appliance () also has a control entity (), wherein an input of a measurement circuit () is coupled with a node of the heating power energy unit ().

Method for determining properties of electrical current provided to an induction heating element

The invention relates to a method for calibrating a power control loop of an induction hob (), the induction hob () comprising a power stage () including at least one induction element (), a measurement unit () and a control unit (), the method comprising the steps of: &#x2014;coupling the at least one induction element () with a reference load; &#x2014;powering the power stage () at predefined working conditions by means of said control unit (); &#x2014;deriving a measurement value being indicative for the power transferred from the power stage () to the reference load by means of said measurement unit (); &#x2014;providing the measurement value to the control unit (); &#x2014;calculating a correction value based on the measurement value and a reference value; &#x2014;storing the correction value in a storage entity in order to modify measurement values provided by the measurement unit () based on the correction value when operating the induction hob ().

Method for calibrating a power control loop of an induction hob

A method for checking functions of fans includes starting a normal operation mode, evaluating a fan monitoring signal depending on the fans' speeds, and starting a dynamic fan checking routine. If the monitoring signal is smaller than a lock threshold value, normal operation proceeds. If the monitoring signal is bigger than the lock threshold value, a multiple-fan checking routine is started. During each fan test the corresponding fan is activated for a predetermined time period, while the other fans are deactivated during the time period, and the monitoring signal is compared with the lock threshold value and a disconnecting threshold value. If the monitoring signal is bigger than the lock threshold value, the corresponding fan is locked and an error is detected. If the monitoring signal is smaller than the disconnecting threshold value, the corresponding fan is disconnected and an error is detected.

Method for checking the functions of a plurality of fans

The invention relates to an assembly unit for an induction hob with at least one induction element has a) at least one carrying element for carrying the circuits and/or devices for supplying the at least one induction element. The at least one carrying element has a base area and side areas protruding upwards from the base area. The at least one carrying element is connectable with at least one further carrying element along a side area. The side areas have connection elements for connection with the at least one further carrying element, preferably at least one power wire slot for inserting at least one power supply wire and/or preferably at least one signal wire slot for inserting at least one signal wire. Furthermore, the invention a method for manufacturing an assembly unit is described.

Assembly unit for an induction hob, induction hob and method for manufacturing an assembly unit

The present invention relates to an induction hob with a cooking surface () and a number of induction coils () within said cooking surface (). The induction coils () are arranged on the cooking surface () according to predetermined scheme, so that at least two induction coils () can be covered by a standard cooking vessel (). Each induction coil () is connected to at least one induction generator being switched or switchable between a high power and a low power. Each induction generator is separately controllable, so that the induction coils () are switched or switchable between the high power and the low power. At least one control unit is provided for controlling the individual induction coils () according to a predetermined time pattern. Further, the present invention relates to a corresponding method for controlling the induction hob.

Induction hob and a method for controlling an induction hob

A method for controlling an induction heating cooking apparatus, comprises the steps of a) transforming a supply current (I) having a base frequency, for example 50 Hz or 60 Hz, into an induction current (I) having a higher frequency than the base frequency of the supply current, b) feeding the induction current into at least one inductor of the induction heating cooking apparatus to generate a magnetic induction field, c) detecting a deviation or distortion of the actual shape or frequency spectrum of the supply current or a rectified supply current from a predetermined admissible shape or frequency spectrum lying outside of a pre-given tolerance range, d) adapting the induction current or the electrical power associated with the induction current until the detected deviation or distortion of the actual shape or frequency spectrum of the supply current or a rectified supply current from the predetermined shape or frequency spectrum lies within the pre-given tolerance range again.

Method and device for controlling an induction heating cooking apparatus

A method for dynamic wave form correction includes providing an input power signal by an AC power source and rectifying the input power signal by a frequency converter into a half waves signal whose half wave is delimited by two subsequent zero-crossings. The time lag between the two zero-crossings defines a half wave duration. The frequency converter converts the half waves signal into a working current signal for supplying an induction heating device. In a frequency shifting operation, the frequency of the working signal is first increased from a first base frequency to a maximum frequency, and is then decreased to a second base frequency different from the first base frequency within a time period smaller than the half wave duration. A zero crossing of the half wave signal is passed within the frequency shifting operation. An arrangement for dynamic wave form correction of a power supply is also provided.

Method and arrangement for dynamic wave form correction

The invention relates to a cooking device () for a cooking container (), a) wherein the cooking device () comprises at its lower surface () a curved, especially concave, cooking surface () adapted to the form of the cooking container (), b) wherein the cooking surface () comprises a first () and a second () partial surface, c) wherein the cooking container () comprises a first area () adjacent to the first partial surface () and a second area () adjacent to the second partial surface (), d) wherein the first area () is heated by a first induction element () and the second area () is heated by a second induction element (), e) wherein each induction element () comprises an individual heat sensor () and f) wherein at least the second induction element () can be controlled independently from the first induction element ().

Cooking device for a cooking container

The present invention relates to a method for controlling a cooking device, in particular an induction hob. The method comprises the steps of activating an overload power (P) for at least one electric or electronic component of the cooking device by using at least two synchronized generators, which overload power (P) is greater than a standard maximum power (P), deactivating the overload power (P) after a predetermined period (&#x394;t), and operating the cooking device at a power (P), which is at most the standard maximum power (P). The standard maximum power (P) is provided for a permanent operation of the cooking device. The overload power (P) and/or the period (&#x394;t) are determined by a function depending on at least the overload power (P) and the period (&#x394;t). The present invention relates further to a corresponding apparatus for controlling a cooking device, in particular an induction hob.

Method and apparatus for controlling a cooking device, in particular an induction hob

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Santarcangelo di Romagna, Italy

Massimo Zangoli