EP4581905A1 - Système de transmission d'énergie par induction - Google Patents

Système de transmission d'énergie par induction

Info

Publication number
EP4581905A1
EP4581905A1 EP23739593.4A EP23739593A EP4581905A1 EP 4581905 A1 EP4581905 A1 EP 4581905A1 EP 23739593 A EP23739593 A EP 23739593A EP 4581905 A1 EP4581905 A1 EP 4581905A1
Authority
EP
European Patent Office
Prior art keywords
modulation
unit
induction
transmission system
control parameter
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP23739593.4A
Other languages
German (de)
English (en)
Inventor
Antonio Muñoz Fumanal
Alberto Dominguez Vicente
Jorge VILLA LOPEZ
Jorge ESPAÑOL LEZA
Jorge Tesa Betes
Konstantin ILIEV
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BSH Hausgeraete GmbH
Original Assignee
BSH Hausgeraete GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by BSH Hausgeraete GmbH filed Critical BSH Hausgeraete GmbH
Publication of EP4581905A1 publication Critical patent/EP4581905A1/fr
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/02—Induction heating
    • H05B6/10—Induction heating apparatus, other than furnaces, for specific applications
    • H05B6/12—Cooking devices
    • H05B6/1209—Cooking devices induction cooking plates or the like and devices to be used in combination with them
    • H05B6/1236—Cooking devices induction cooking plates or the like and devices to be used in combination with them adapted to induce current in a coil to supply power to a device and electrical heating devices powered in this way
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B2213/00—Aspects relating both to resistive heating and to induction heating, covered by H05B3/00 and H05B6/00
    • H05B2213/06—Cook-top or cookware capable of communicating with each other

Definitions

  • the invention relates to an induction energy transmission system according to the preamble of claim 1 and a method for operating an induction energy transmission system according to the preamble of claim 14.
  • Induction energy transmission systems for the inductive transmission of energy from a primary coil of a supply unit to a secondary coil of an installation unit are already known from the prior art.
  • US Pat. No. 3,761,668 A proposes an induction hob which, in addition to inductively heating cooking utensils, is also intended to supply energy to small household appliances, such as a mixer. Energy provided inductively by a primary coil of the induction hob is partially transferred to a secondary coil integrated in the small household appliance.
  • control parameters of the supply unit for example a switching frequency and/or a duty cycle, for controlling and supplying energy to the supply unit must be able to be varied over a particularly large range in order to be able to set a supply power for a specific small household appliance as required.
  • undesired electromagnetic interference such as noise or flicker, can occur, which severely limits operating comfort for users.
  • the object of the invention is in particular, but not limited to, to provide a generic device with improved properties in terms of ease of use.
  • the object is achieved according to the invention by the features of claims 1 and 14, while advantageous refinements and developments of the invention can be found in the subclaims.
  • the invention is based on an induction energy transmission system, in particular an induction cooking system, with a set-up plate, with a supply unit arranged below the set-up plate, which has at least one supply induction element for the inductive provision of energy, with a control unit, which in an operating state controls the supply unit and supplies it with energy and with at least one set-up unit for setting it up on the set-up plate, the set-up unit having at least one receiving induction element for receiving the inductively provided energy.
  • Such a configuration can advantageously provide an induction energy transmission system with improved properties in terms of ease of use, in particular in terms of comfortable and/or safe and/or low-noise operation.
  • Compliance with EMC standards and/or flicker compliance can advantageously be achieved using simple technical means.
  • a spectral power density of a switching frequency of the supply unit can advantageously be reduced by means of frequency modulation.
  • Flicker can advantageously be controlled according to a flicker standard, in particular according to the DIN EN 61000-3-3 standard and/or the IEC standard 1000-3-3, in particular through an advantageous control of individual or several supply induction elements, at least largely, in particular essentially completely, avoided.
  • the further unit could be designed as a temperature sensor or as a stirring unit or the like.
  • the installation unit could be designed as a small household appliance.
  • the small household appliance is preferably a location-independent household appliance, which at least the recording induction element and at least one functional unit, which provides at least one household appliance function in an operating state.
  • location-independent is to be understood as meaning that the small household appliance can be positioned freely in a household by a user, and in particular without any aids, in particular in contrast to a large household appliance, which is permanently positioned at a specific position in a household and/or is installed, such as an oven or a refrigerator.
  • the control parameter set of the supply unit comprises at least two different control parameters, based on which the control unit controls an amount of energy inductively provided in the operating state by at least one of the supply induction elements of the supply unit.
  • the control parameter set can, for example, include a switching frequency of the supply unit as a first control parameter and a duty cycle of the supply unit as a second control parameter of the supply unit.
  • the control parameter set can also include further control parameters of the supply unit that appear useful to a person skilled in the art.
  • the control unit can be in the Operating state modulate several, in particular all, control parameters within the modulation period using at least one modulation technique.
  • a plurality of different predefined modulation profiles are stored in the memory unit of the control unit, which can be automatically called up by the control unit, in particular based on a user's selection of a specific operating mode and/or a target power for operating the installation unit provided via at least one supply induction element of the supply unit are.
  • the set-up unit in the operating state it would also be conceivable for the set-up unit in the operating state to wirelessly transmit to the control unit by means of a communication unit at least one modulation profile, which is in particular designed specifically for the set-up unit.
  • control unit is intended to vary the modulation profile at least based on a parameter relating to the setup unit.
  • the modulation technology can advantageously be adapted particularly well to an individual operating situation, in particular to the individual operation of different installation units.
  • control unit has at least one sensor unit for detecting the parameter relating to the setup unit.
  • the parameter relating to the installation unit could include, for example, a temperature of the installation unit and/or an area of the installation plate on which the installation unit is set up in the operating state, and/or an operating time of the installation unit or the like.
  • the parameter relating to the installation unit is an electrical parameter of the installation unit and/or an influence of the installation unit on at least one electrical parameter of the supply unit.
  • the parameter relating to the setup unit could, for example, be an electrical parameter of the receiving induction element, in particular an inductance and/or an electrical resistance and/or an impedance and/or a capacity and/or an electrical voltage and/or current strength and/or an electrical power and/or be a resonance frequency of the recording induction element and / or at least one component connected to the recording induction element.
  • the electrical parameter of the installation unit comprises at least one electrical power of the installation unit, in particular a minimum power and/or a maximum power, preferably a target power currently set by a user.
  • the parameter can include an influence of the installation unit on an impedance of at least one supply induction element of the supply unit.
  • the modulation profile has a linear course at least in sections within the modulation period.
  • a modulation profile that is linear at least in sections interference influences during operation of the induction energy transmission system, such as acoustic noise or the like, can advantageously be particularly reliably reduced, preferably minimized.
  • a “linear course at least in sections” is to be understood here as meaning that the modulation profile has at least one section of a plurality of at least three consecutive modulation intervals, in which the at least one control parameter of the control parameter set is changed by the control unit by the same amount.
  • the modulation period could have a section which consists of at least three successive modulation intervals, in which the control unit modifies the at least one control parameter of the control parameter set by a first amount in the first of the successive modulation intervals, and by a second amount in the second of the successive modulation intervals, which is the Corresponds to twice the first amount, and in the third of the successive modulation intervals increases or decreases by a third amount, which corresponds to four times the first amount.
  • the modulation profile is mirror-symmetrical at least in sections within the modulation period. This can advantageously further reduce the occurrence of disruptive effects, in particular flicker.
  • a desired target power for supplying the installation unit can advantageously be set particularly precisely.
  • the at least partially mirror-symmetrical modulation profile could, for example, have a first section in which the at least one control parameter of the control parameter set has a, for example linear or exponential, course, which can be described by a first mathematical function, and a second section immediately following the first section, which can be described by a second mathematical function, which can be converted into the first mathematical function by reflection on an axis of symmetry.
  • the induction energy transmission system has a hob which includes the control unit and the supply unit.
  • a hob which includes the control unit and the supply unit.
  • an induction energy transmission system designed as an induction cooking system with the aforementioned advantageous properties can be provided, which, in addition to an inductive energy supply to set-up units designed as small household appliances through the supply unit, also enables classic inductive heating of cooking utensils.
  • the induction energy transmission system has a small appliance supply unit, which includes the control unit and the supply unit.
  • the stand is preferably designed as a kitchen worktop.
  • the invention is further based on a method for operating an induction energy transmission system, in particular according to one of the preceding claims, with a set-up plate, with a supply unit arranged below the set-up plate, which has at least one supply induction element for inductively providing energy, and with at least one set-up unit for setting up onto the set-up plate, wherein the set-up unit has at least one receiving induction element for receiving the inductively provided energy.
  • At least one control parameter of a control parameter set of the supply unit is modulated within a modulation period using at least one modulation technique.
  • the induction energy transmission system can advantageously be operated particularly efficiently.
  • the induction energy transmission system can advantageously be operated particularly safely and/or comfortably, in particular with little noise and in compliance with EMC and flicker standards.
  • the induction energy transmission system should not be as described above
  • the induction energy transfer system can achieve one described herein Mode of operation has a number of individual elements, components and units that deviate from the number mentioned herein.
  • FIG. 2 is a schematic diagram showing a time course of a control parameter of a control parameter set, by means of which the control unit controls the supply unit in an operating state,
  • FIG. 3 is a schematic diagram showing a modulation period within which the control unit, in a first configuration, modulates at least one control parameter of the control parameter set by means of at least one modulation technique
  • FIG. 4 shows a schematic diagram showing a modulation profile, based on which the control unit modulates the at least one control parameter of the control parameter set within the modulation period in the first configuration
  • FIG. 5 is a schematic diagram showing a first further modulation profile, based on which the control unit in the first configuration modulates the at least one control parameter of the control parameter set in a first further modulation period,
  • Fig. 6 is a schematic diagram to show a second further modulation profile, based on which the control unit in the first configuration determines the at least one control parameter of the Control parameter set is modulated in a second further modulation period,
  • FIG. 7 shows two schematic diagrams to represent a third further modulation profile, based on which the control unit in the first configuration modulates the at least one control parameter of the control parameter set in a third further modulation period,
  • 9 is a schematic diagram showing modulation periods within which the control unit, in a second configuration, modulates at least one control parameter of the control parameter set by means of at least one modulation technique based on at least one predefined modulation profile,
  • 10 is a schematic diagram showing further modulation periods within which the control unit in the second configuration modulates at least one control parameter of the control parameter set using at least one modulation technique based on at least one predefined modulation profile,
  • 11 shows two schematic diagrams to represent one of the further modulation profiles, based on which the control unit in the first configuration modulates the at least one control parameter of the control parameter set in one of the further modulation periods,
  • FIG. 12 is a schematic diagram showing a further modulation period, within which the control unit in the second configuration modulates the at least one control parameter of the control parameter based on at least one further modulation profile, which is an inverse of the further modulation profile,
  • FIG. 13 shows a schematic process flow diagram of a method for operating the induction energy transmission system
  • Fig. 14 shows a further exemplary embodiment of an induction energy transmission system with a set-up plate, a supply unit, a control unit and two set-up units set up on the set-up plate in a schematic representation.
  • FIG. 1 shows an induction energy transmission system 10a in a schematic representation.
  • the induction energy transmission system 10a has a mounting plate 12a and a supply unit 14a.
  • the supply unit 14a is arranged below the mounting plate 12a and has at least one supply induction element 16a for inductively providing energy.
  • the supply unit 14a comprises a total of four supply induction elements 16a, which are arranged under the mounting plate 12a.
  • the induction energy transmission system 10a has a control unit 18a, which controls the supply unit 14a in an operating state and supplies it with energy.
  • the control unit 18a includes an inverter (not shown) for controlling and supplying energy to the supply unit 14a.
  • control unit 18a supplies the supply unit 14a with electrical energy in the form of an alternating supply current 66a (see Figure 3), the frequency of which corresponds to a switching frequency 168a (see Figure 3), with which the control unit 18a operates the inverter.
  • the induction energy transmission system 10a is designed here as an induction cooking system and includes a hob 46a.
  • the hob 46a is designed as an induction hob.
  • the stand plate 12a is designed as a hob plate 154a.
  • the hob plate 154a is part of the hob 46a.
  • the hob 46a includes the control unit 18a and the supply unit 14a.
  • the induction energy transmission system 10a includes at least one installation unit 20a for installation on the installation plate 12a.
  • the installation unit 20a has at least one recording induction element 24a.
  • the receiving induction element 24a is intended to receive inductively provided energy.
  • the receiving induction element 24a is intended to receive the energy inductively provided by the supply induction element 16a.
  • the induction energy transmission system 10a includes the installation unit 20a and a further installation unit 22a.
  • the installation unit 20a is designed as a small household appliance designed, namely as a food processor 52a and intended, among other things, for mixing and / or stirring food.
  • the further installation unit 22a is designed as another small household appliance, namely as a kettle 54a.
  • Figure 2 shows a schematic diagram for an exemplary representation of a time course of a control parameter 26a of a control parameter set of the supply unit 14a.
  • the control unit 18a controls the supply unit 14a based on the control parameter set.
  • the control parameter set comprises at least two control parameters 26a, 26a'.
  • the control parameter set includes a switching frequency 168a of the supply unit 14a as control parameter 26a.
  • the control parameter set also includes a duty cycle 172a (see FIG. 9) of the supply unit 14a as control parameter 26a' (see FIG. 9).
  • a time in milliseconds is plotted on an abscissa 56a of the diagram in FIG. 2.
  • the switching frequency 168a of the supply unit 14a is plotted in kilohertz on an ordinate 58a of the diagram.
  • a curve shows a time course of an alternating mains voltage 32a, which is rectified by a rectifier (not shown) of the control unit 18a in such a way that an instantaneous value of the alternating mains voltage 32a changes within half a period 30a, and the alternating mains voltage 32a changes its electrical polarity within one period 60a does not change from two half periods 30a.
  • the AC mains voltage 32a has a frequency of 50 Hz, so that the period duration 60a lasts 20 milliseconds and half the period duration 30a corresponds to 10 milliseconds.
  • the control unit 18a modulates at least one control parameter 26a, 26a' of the supply unit 14a within a modulation period 28a (see FIG. 3) by means of at least one modulation technique.
  • the control unit 18a modulates the switching frequency 168a of the supply unit 14a using frequency modulation.
  • FIG. 3 shows a diagram for a schematic representation of the modulation period 28a, within which the control unit 18a modulates the switching frequency 168a in the first configuration by means of at least one frequency modulation.
  • a time in milliseconds is plotted on an abscissa 62a of the diagram.
  • the switching frequency 168a in kilohertz and the alternating supply current 66a in amperes are plotted on an ordinate 64a.
  • the modulation period 28a corresponds to an integer multiple, in this case eleven times, half the period length 30a of the AC mains voltage 32a.
  • the switching frequency 168a corresponds to an average switching frequency 68a, which corresponds to one of the average power inductively provided by the supply induction element 16a.
  • the control unit 18a modulates the in the operating state in the first configuration
  • the modulation profile 38a is mirror-symmetrical with respect to an axis of symmetry 76a, so that the course of the modulation profile 38a in the second section 74a results from mirroring the course in the first section 72a on the symmetry axis 76a.
  • the first further modulation profile 78a has a linear and essentially continuous course with a flatter increase in the switching frequency 168a compared to the second section 102a.
  • the first further modulation profile 78a is mirror-symmetrical at least in sections.
  • the first further modulation profile 78a is mirror-symmetrical with respect to an axis of symmetry 106a, so that a course of the first further modulation profile 78a in a second section 108a results from mirroring the course in the first section 100a on the symmetry axis 106a.
  • Figure 6 shows a schematic diagram to represent a second further modulation profile 82a, based on which the control unit 18a determines the at least one control parameter 26a of the control parameter set, in the present first configuration the switching frequency 168a, within a second further modulation period 84a, following the first further modulation period 78a, modulated by means of at least one modulation technique, in the present case a further different frequency modulation.
  • the second further modulation period 84a corresponds to an integer multiple of half the period length 30a of the AC mains voltage 32a.
  • a time in milliseconds is plotted on an abscissa 110a of the diagram.
  • the switching frequency 168a is plotted in kilohertz on an ordinate 112a of the diagram.
  • the second further modulation profile 82a can be described by a continuous mathematical function.
  • the second further modulation profile 82a has an exponential course at least in sections within the second further modulation period 84a.
  • the second further modulation profile 82a has a continuous course with an exponentially increasing switching frequency 168a.
  • the second further modulation profile 82a has a continuous course with an exponentially decreasing switching frequency 168a.
  • the second further modulation profile 82a is mirror-symmetrical at least in sections.
  • the second further modulation profile 82a is mirror-symmetrical with respect to an axis of symmetry 118a, so that a course of the second further modulation profile 82a in the second section 116a results from mirroring the course in the first section 114a on the symmetry axis 118a.
  • the control unit 18a is intended to vary the third further modulation profile 86a at least based on a parameter 40a relating to the setup unit 20a or the further setup unit 22a.
  • the parameter 40a is a target power set by a user, which is to be provided by the supply induction element 16a to supply the installation unit 20a.
  • a general course of the third further modulation profile 86a is continuous, linear in sections and an inverse of the first further modulation profile 78a (see FIG. 5).
  • the control unit 18a varies a frequency value range 130a of the third further modulation profile 86a in the operating state in such a way that the course of the power 124a shown in the upper diagram results.
  • FIG. 8 shows two schematic diagrams to represent a fourth further modulation profile 90a, based on which the control unit 18a sets the at least one control parameter 26a of the control parameter set, in the present first configuration the switching frequency 168a, within a fourth further modulation period 92a, following the third further modulation period 88a, modulated by means of at least one modulation technique, in the present case a further different frequency modulation.
  • the fourth further modulation period 92a corresponds to an integer multiple of half the period duration 30a of the AC mains voltage 32a.
  • a time in milliseconds is plotted on an abscissa 140a of a lower diagram.
  • the switching frequency 168a is plotted in kilohertz on an ordinate 142a of the lower diagram.
  • the time in milliseconds is plotted on an abscissa 136a of an upper diagram.
  • An impedance 42a of the supply induction element 16a is plotted on an ordinate 138a of the upper diagram.
  • the fourth further modulation profile 90a differs from the third further modulation profile 86a essentially with regard to a parameter 50a relating to the setup unit 20a, which the control unit 18a uses as a basis for a variation of the fourth further modulation profile 90a.
  • the parameter 50a includes an influence of the setup unit 20a on the impedance 42a of the supply induction element 16a.
  • the control unit 18a varies the fourth further modulation profile 90a in such a way that the course of the impedance 42a shown in the upper diagram results. Due to the frequency modulation of the switching frequency 168a, the impedance 42a changes and has an excess 144a in sections and a deficit 146a in sections.
  • the control unit 18a varies the fourth further modulation profile 90a such that the impedance 42a is constant on average over the fourth further modulation period 92a.
  • control unit 18a additionally modulates the switching frequency 168a within an intermediate modulation period 44a, which corresponds to a maximum of half the period length 30a of the AC mains voltage 32a, by means of at least one further frequency modulation.
  • the control unit 18a varies in the operating state, in addition to the frequency modulation described above, based on the fourth further modulation profile 90a, within the intermediate modulation period 44a Switching frequency 168a for a short time, namely within half the period 30a
  • FIG. 9 shows a schematic diagram for representing modulation periods 28a', 80a', 84a' within which the control unit 18a in a second configuration at least one control parameter 26a' of the control parameter set of the supply unit 14a by means of at least one modulation technique based on at least one predefined modulation profile 38a', 78a ', 82a' modulated.
  • the control unit 18a modulates the duty cycle 172a as a control parameter 26a' of the supply unit 14a by means of at least one duty cycle modulation.
  • a time in milliseconds is plotted on an abscissa 176a of the diagram.
  • the duty cycle 172a of the supply unit 14a is plotted in percent on an ordinate 178a of the diagram.
  • the modulation period 28a' comprises a plurality of successive modulation intervals 34a', 36a', each of which corresponds to an integer multiple of half the period duration 30a of the AC mains voltage 32a (see Figure 2).
  • two modulation intervals 34a', 36a' that differ from one another are shown as examples.
  • the control unit 18a increases the duty cycle 172a.
  • the control unit 18a lowers the duty cycle 172a.
  • the modulation profile 38a' can be described by a continuous mathematical function.
  • the modulation profile 38a' has an at least partially linear course within the modulation period 28a'.
  • the first further modulation profile 78a' is mirror-symmetrical at least in sections.
  • the first further modulation profile 78a' is mirror-symmetrical with respect to the symmetry axis 76a', so that a course of the first further modulation profile 78a' in a second section 108a' results from mirroring the course in the first section 100a' on the symmetry axis 76a.
  • Communication element further communication element further communication element

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Ac-Ac Conversion (AREA)

Abstract

L'invention concerne un système de transmission d'énergie par induction (10a ; 10b), en particulier un système de cuisson par induction, comprenant une plaque de cuisson (12a ; 12b), une unité d'alimentation (14a ; 14b) qui est disposée au-dessous de la plaque de cuisson (12a ; 12b) et comprend au moins un élément d'induction d'alimentation (16a ; 16b) pour fournir de l'énergie par induction, comprenant en outre une unité de commande (18a ; 18b) qui commande l'unité d'alimentation (14a ; 14b) dans un état de fonctionnement et l'alimente en énergie, et comprenant au moins une unité de placement (20a, 22a ; 20b, 22b) destinée à être placée sur la plaque de table de cuisson (12a ; 12b), ladite unité de placement (20a, 22a ; 20b, 22b) ayant au moins un élément d'induction d'acceptation (24a ; 24b) pour recevoir l'énergie fournie par induction. Afin d'améliorer la facilité d'utilisation, l'unité de commande (18a ; 18b) dans l'état de fonctionnement module au moins un paramètre de commande (26a, 26a') de l'une des unités d'alimentation (14a ; 14b) dans une période de modulation (28a, 28a', 80a, 80a', 84a, 84a', 88a, 88a', 92a, 92a', 182a'') au moyen d'au moins une technique de modulation.
EP23739593.4A 2022-08-30 2023-07-12 Système de transmission d'énergie par induction Pending EP4581905A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP22382808 2022-08-30
PCT/EP2023/069381 WO2024046640A1 (fr) 2022-08-30 2023-07-12 Système de transmission d'énergie par induction

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EP4581905A1 true EP4581905A1 (fr) 2025-07-09

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EP23739593.4A Pending EP4581905A1 (fr) 2022-08-30 2023-07-12 Système de transmission d'énergie par induction

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Publication number Priority date Publication date Assignee Title
WO2025261966A1 (fr) * 2024-06-19 2025-12-26 BSH Hausgeräte GmbH Système de transmission d'énergie par induction et procédé de fonctionnement d'un système de transmission d'énergie par induction

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3761668A (en) 1972-03-01 1973-09-25 Gen Electric Small electrical apparatus powered by induction cooking appliances
DE102011088918A1 (de) * 2011-12-16 2013-06-20 E.G.O. Elektro-Gerätebau GmbH Verfahren zum Übertragen von Daten, Induktionsheizvorrichtung, induktiv beheizbares Kochgefäß und System
CN111692616B (zh) * 2019-03-12 2022-05-27 泰科电子(上海)有限公司 多灶头电磁炉
EP3836752B1 (fr) * 2019-12-13 2023-06-07 Ztove ApS Mise en place d'un récipient de cuisson par chauffage de boucle de régulation dans un système de cuisson par induction

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