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EP3066888B2 - Dispositif table de cuisson à induction - Google Patents
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EP3066888B2 - Dispositif table de cuisson à induction - Google Patents

Dispositif table de cuisson à induction

Info

Publication number
EP3066888B2
EP3066888B2 EP14806727.5A EP14806727A EP3066888B2 EP 3066888 B2 EP3066888 B2 EP 3066888B2 EP 14806727 A EP14806727 A EP 14806727A EP 3066888 B2 EP3066888 B2 EP 3066888B2
Authority
EP
European Patent Office
Prior art keywords
induction
induction heating
unit
heating element
detection circuit
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.)
Active
Application number
EP14806727.5A
Other languages
German (de)
English (en)
Other versions
EP3066888B1 (fr
EP3066888A1 (fr
Inventor
Nicolas Blasco Rueda
Oscar Garcia-Izquierdo Gango
Ignacio Garde Aranda
Oscar Gracia Campos
Pablo Jesus Hernandez Blasco
Daniel Palacios Tomas
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
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Application filed by BSH Hausgeraete GmbH filed Critical BSH Hausgeraete GmbH
Publication of EP3066888A1 publication Critical patent/EP3066888A1/fr
Application granted granted Critical
Publication of EP3066888B1 publication Critical patent/EP3066888B1/fr
Publication of EP3066888B2 publication Critical patent/EP3066888B2/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • H05B6/06—Control, e.g. of temperature, of power
    • 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
    • H05B6/06—Control, e.g. of temperature, of power
    • H05B6/062—Control, e.g. of temperature, of power for cooking plates or the like
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C7/00—Stoves or ranges heated by electric energy
    • F24C7/08—Arrangement or mounting of control or safety devices
    • F24C7/087—Arrangement or mounting of control or safety devices of electric circuits regulating heat
    • F24C7/088—Arrangement or mounting of control or safety devices of electric circuits regulating heat on stoves
    • 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
    • H05B2213/03—Heating plates made out of a matrix of heating elements that can define heating areas adapted to cookware randomly placed on the heating plate
    • 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
    • H05B2213/05—Heating plates with pan detection means

Definitions

  • the invention relates to an induction hob device according to the preamble of claim 1.
  • An induction cooktop device comprising an induction heating element designed for heating cookware placed on the cooktop and a detection circuit designed to detect cookware placed on the cooktop in conjunction with the induction heating element.
  • the induction heating element is connected via a relay either to a heating frequency unit or to the detection circuit.
  • the detection circuit is thus only connected to the induction heating element when the relay is in the corresponding switching position.
  • the object of the invention is, in particular, to provide a generic device with an advantageous design. This object is achieved according to the invention by the features of claim 1, while advantageous embodiments and further developments of the invention can be found in the dependent claims.
  • the invention relates to an induction hob device with at least one induction heating element, which is provided for heating cooking utensils, and with at least one detection circuit, which in conjunction with the at least one induction heating element is provided for at least the detection of placed cooking utensils.
  • the at least one detection circuit be directly connected to the at least one induction heating element, independent of any operating state.
  • An “induction cooktop device” is understood to be, in particular, a part, especially a subassembly, of an induction cooktop.
  • An “induction heating element” is understood to be, in particular, a wound electrical conductor through which, in at least one operating state, high-frequency alternating current, especially heating current, flows.
  • the induction heating element is specifically designed to convert electrical energy into an alternating magnetic field, which is intended to induce eddy currents and/or remagnetization effects in a metallic, preferably at least partially ferromagnetic, cookware, which are converted into heat.
  • the induction heating element is designed to cause the cookware to heat up.
  • the induction cooktop device comprises at least two, in particular at least three, advantageously at least four, particularly advantageously at least eight, preferably at least ten, and most preferably a plurality of induction heating elements.
  • a "detection circuit” is understood to be, in particular, an electrical circuit that, depending on the position of cooking equipment above the induction heating element, is designed to change at least one detection parameter. Specifically, the detection circuit is traversed by at least one detection current in at least one operating state. Specifically, the detection circuit is designed to change at least one frequency of the detection current depending on the position of cooking equipment above the induction heating element.
  • the detection circuit could be designed to change at least one phase angle of the detection current depending on the position of cooking equipment above the induction heating element.
  • the detection circuit is designed to be supplied by at least one sensor current supply unit, which is configured to be separate from at least one power current supply unit for supplying the at least one induction heating element.
  • the induction cooktop device comprises at least two, in particular at least three, advantageously at least four, particularly advantageously at least eight, preferably at least ten, and particularly preferably a plurality of detection circuits.
  • a number of induction heating elements and a number of detection circuits are at least substantially, in particular exactly, the same.
  • a detection circuit is connected to at least two, in particular at least three, advantageously at least four, and particularly advantageously a plurality of induction heating elements.
  • Independent of an operating state is understood to mean, in particular, independent of at least one position of at least one switching element and/or independent of any current flow through the induction heating element.
  • the phrase "that the detection circuit is directly connected to the induction heating element independent of an operating state” is understood to mean, in particular, that the detection circuit and the induction heating element form a closed circuit in every operating state, particularly at least for alternating current. In particular, an electric current, in particular alternating current, flows through the closed circuit in every heating operating state.
  • the detection circuit is traversed by a detection current corresponding to a heating current in every operating state.
  • at least one electrically conductive connection exists between the detection circuit and the induction heating element, particularly for alternating current.
  • the connection between the detection circuit and the induction heating element is free of switching elements, especially relays and/or transistors.
  • "Provided for” is understood to mean specifically programmed, designed, and/or equipped. The fact that an object is intended for a specific function should be understood in particular to mean that the object fulfills and/or performs this specific function in at least one application and/or operating state.
  • the inventive design allows for the provision of an induction cooktop device with an advantageous construction.
  • low production costs can be achieved.
  • switching elements for establishing a connection between the detection circuit and the induction heating element can be omitted.
  • problems due to low current through contacts of a switching element, especially a relay can be avoided.
  • detection can advantageously be carried out independently of the switching state of a switching element, especially a relay.
  • an induction cooktop device comprising at least one induction heating element, which is part of at least one power resonant circuit and is intended for heating cookware, and comprising at least one detection circuit, which is intended for detecting cookware and which includes the at least one induction heating element in at least one operating state.
  • the at least one detection circuit includes at least one protection unit connected to the at least one induction heating element and from which the at least one power resonant circuit branches off.
  • the protection unit is specifically designed to protect at least the at least one detection circuit from external voltages, regardless of the operating state, and particularly at least in a heating operating state.
  • the at least one protection unit is designed to prevent, at least substantially, the ingress of heating current, especially high-frequency current, into the detection circuit.
  • the frequency value of a detection current differs from the frequency value of a heating current by a factor of at least 10, particularly by at least 100, advantageously by at least 500, and most advantageously by at least 1000.
  • “External voltages” are understood to mean, in particular, voltages that are advantageously present across at least one heating frequency unit and/or across the at least one induction heating element in an operating state.
  • “external voltages” are understood to mean, in particular, voltages that are intended to be used to operate the at least one induction heating element in an operating state.
  • the phrase "that the protective unit is designed to prevent, at least substantially, the ingress of, in particular, high-frequency heating current into the detection circuit” is specifically intended to mean that the protective unit is designed to prevent a proportion of up to 50%, in particular up to 30%, advantageously up to 15%, particularly advantageously up to 10%, preferably up to 5%, and most preferably up to 2% of the heating current incident on the protective unit from passing through, in particular from reaching, the protective unit, especially from reaching a second side facing away from the first side.
  • This allows, in particular, an induction cooktop device with an advantageous design, from which precise detection of cooking utensils can be advantageously achieved.
  • the induction cooktop device comprises at least one heating frequency unit for supplying the at least one induction heating element, wherein the at least one detection circuit is branched off from a connection between the at least one heating frequency unit and the at least one induction heating element.
  • a "heating frequency unit” is understood to be, in particular, an electrical unit that generates an oscillating electrical signal, preferably with a frequency of at least 1 kHz, more particularly of at least 10 kHz, advantageously of at least 20 kHz, and particularly of a maximum of 100 kHz, for at least one induction heating element.
  • the heating frequency unit is designed to provide a maximum electrical power of at least 100 W, more particularly of at least 500 W, advantageously of at least 1000 W, and preferably at least 1500 W, as required by the induction heating element.
  • the heating frequency unit advantageously comprises at least one inverter, preferably comprising at least two, preferably series-connected, bidirectional unipolar switches, which are in particular formed by a transistor and a diode connected in parallel, and particularly advantageously comprising at least one buffer capacitance connected in parallel to each of the bidirectional unipolar switches, which is in particular formed by at least one capacitor.
  • a voltage tap of the heating frequency unit is in particular arranged at a common contact point of two bidirectional unipolar switches.
  • the at least one heating frequency unit and the at least one induction heating element form the at least one power resonant circuit in at least one operating state.
  • a "connection" between the heating frequency unit and the induction heating element is understood in particular to mean a bridging of at least one distance between the heating frequency unit and the induction heating element, which is electrically conductive in at least one operating state.
  • the connection between the heating frequency unit and the induction heating element could be made directly and/or via at least one switching element.
  • the at least one detection circuit is "branched off” from a connection between the at least one heating frequency unit and the at least one induction heating element” means that at least one, and preferably exactly one, electrically conductive contact point exists by means of which the at least one detection circuit is connected to the connection between the at least one heating frequency unit and the at least one induction heating element. This allows, in particular, precise detection of cookware placed on the induction heating element.
  • the induction cooktop device include at least one protective unit designed to protect at least one detection circuit from external voltages, particularly those occurring during operation of the at least one induction heating element, regardless of the operating state, and especially during heating operation. This prevents, in particular, the ingress of high-frequency alternating current into the detection circuit.
  • components designed for low voltage can be used instead of those designed for high power, resulting in a more cost-effective design.
  • the at least one protection unit be connected, regardless of the operating state, between an input of the at least one detection circuit and a branch from the connection between the at least one heating frequency unit and the at least one induction heating element.
  • the protection unit is connected, regardless of the operating state, to the side of the branch from the connection between the heating frequency unit and the induction heating element facing the detection circuit.
  • the protection unit is located outside the power resonant circuit, regardless of the operating state. This allows for a particularly durable design.
  • the at least one protective unit include at least one capacitor.
  • this capacitor differs from a capacitor in the power resonant circuit, especially from a damping capacitor and/or a resonant capacitor. This allows for a more cost-effective design.
  • the at least one detection circuit and the at least one induction heating element form a resonant circuit at least in one operating state, particularly outside of a heating operating state.
  • a "resonant circuit” is understood to be, in particular, a resonant electrical circuit that includes at least the induction heating element and at least one capacitor, which is, in particular, part of the detection circuit.
  • the detection circuit and the induction heating element are designed to perform electrical oscillations at least in one operating state. This allows, in particular, the precise detection of placed cooking equipment.
  • the induction cooktop device includes a control unit designed to determine at least one cooking cookware parameter as a function of a change in the natural frequency of the at least one detection circuit.
  • a "control unit” is understood to be, in particular, an electronic unit that is preferably at least partially integrated into a control and/or regulation unit of an induction cooktop and that is preferably designed to control and/or regulate at least the heating frequency unit.
  • the control unit includes a processing unit and, in particular, in addition to the processing unit, a storage unit with a control and/or regulation program stored therein, which is intended to be executed by the processing unit.
  • the control unit has at least one amplifier for amplifying the detection current.
  • the control unit has at least one analog-to-digital converter for converting the detection current.
  • the cooking cookware parameter is defined as the presence and/or absence of placed cooking cookware.
  • the cooking cookware parameter is defined as the size and/or shape and/or material of placed cooking cookware.
  • other variations of the cooking vessel parameter that appear sensible to an expert are conceivable. This can achieve a high level of user comfort, in particular.
  • the cooking vessel parameter can be determined precisely.
  • At least one detection circuit be designed to detect cooking utensils, in particular exclusively, outside of a heating operating state.
  • the heating frequency unit and in particular its buffer capacity, is designed to prevent, and in particular block, the detection of cooking utensils placed on the unit during heating operation.
  • the buffer capacity is designed to short-circuit the detection circuit during heating operation. This allows for a more durable and/or cost-effective design.
  • FIG. 1 shows an induction cooktop 30 with an induction cooktop device 10 according to the invention.
  • the induction cooktop 30 has a base body 32 for placing cooking utensils on.
  • the base body 32 is designed as a cooktop plate.
  • the base body 32 forms a cooking surface.
  • the induction cooktop 30 includes a control unit 34 for entering and/or selecting operating parameters, for example, a heating power and/or a heating power density and/or a heating zone.
  • the control unit 34 is designed to output a value of an operating parameter to an operator.
  • the induction cooktop device 10 includes a control unit 28, which is designed to execute actions and/or change settings depending on the operating parameters entered by means of the control unit 34.
  • the induction hob device 10 comprises several induction heating elements 12, which are intended for heating placed cooking cookware (see figure). Fig. 2 ). In Fig. 2 For the sake of clarity, only one of the multiple components and/or objects is marked with a reference symbol.
  • the induction heating elements 12 form a variable cooking surface area.
  • the induction heating elements 12 form a cooktop matrix.
  • the induction heating elements are designed as classic induction heating elements and form a classic cooking surface. In this case, each induction heating element could form a separate heating zone for heating cookware placed on it.
  • the induction cooktop device 10 comprises several heating frequency units 16 for supplying the induction heating elements 12.
  • the heating frequency units 16 are part of a power supply unit 48, which is designed to supply the induction heating elements 12.
  • Each heating frequency unit 16 includes an inverter.
  • Each heating frequency unit 16 includes two bidirectional unipolar switches connected in series.
  • Each heating frequency unit 16 includes two buffer capacitors 42 connected in series. One buffer capacitor 42 is connected in parallel to each of the unipolar switches.
  • the heating frequency units 16 In an operating state, the heating frequency units 16 generate high-frequency alternating current to supply the induction heating elements 12.
  • the high-frequency alternating current is designed as heating current.
  • the heating current has a frequency of several kilohertz.
  • the heating current in a heating operating state could have a frequency between 25 kHz and 75 kHz. Alternatively, other frequencies that would be considered suitable by a person skilled in the art are conceivable.
  • the heating frequency units 16 are each connected to the induction heating elements 12 by means of an electrically conductive connection 18.
  • the induction heating elements 12 are connected to ground via a resonant unit 56 at connection points 46 opposite the heating frequency units 16.
  • the heating frequency units 16 form a power resonant circuit with the induction heating elements 12 and a portion of the resonant unit 56.
  • the induction cooktop device 10 includes the resonant unit 56.
  • the resonant unit 56 includes a resonant capacitor for each induction heating element 12. Each resonant capacitor has two capacitors.
  • the induction cooktop device 10 comprises a circuit unit 36, which is designed to establish or interrupt the connection 18 between the heating frequency units 16 and the induction heating elements 12.
  • the circuit unit 36 comprises several switching elements, with each switching element being arranged in one of the connections 18 between one of the heating frequency units 16 and one of the induction heating elements 12.
  • the circuit unit 36 is controllable by the control unit 28.
  • an embodiment without a circuit unit is conceivable, in which the heating frequency units and the induction heating elements are directly connected to each other (see Figure 1). Fig. 4 ). In this case, the connection between the heating frequency units and the induction heating elements is continuously electrically conductive, especially regardless of the operating state.
  • the induction hob device 10 comprises several rectifiers 38 which are connected to a phase 40 of a supply network (cf. Fig. 2
  • the rectifiers 38 rectify an alternating current coupled via phase 40.
  • Each rectifier 38 is connected to two heating frequency units 16.
  • Two heating frequency units 16 are connected to phase 40 of the supply network via a rectifier 38.
  • the induction cooktop device 10 comprises several detection circuits 14. Each detection circuit 14, in conjunction with one induction heating element 12, is designed to detect cookware placed on the cooktop. Each detection circuit 14 is directly connected to one of the induction heating elements 12, regardless of the operating state (see figure). Fig. 3 The detection circuits 14 are directly connected to the induction heating elements 12, independent of the switching position of the circuit unit 36. In the present embodiment, each detection circuit 14 is connected to a connection point 44 of the induction heating element facing the heating frequency unit 16. 12 connected. The detection circuits 14 are branched off from the connections 18 between the heating frequency units 16 and the induction heating elements 12. The branches 24 from the connections 18 between the heating frequency units 16 and the induction heating elements 12 are arranged between the connection points 44 facing the heating frequency units 16 and the circuit unit 36.
  • the induction cooktop device 10 comprises several protective units 20 designed to protect the detection circuits 14 from external voltages, regardless of the operating state.
  • the protective units 20 are connected to the sides of the branches 24 facing the detection circuits 14, regardless of the operating state.
  • the protective units 20 are connected between an input 22 of the detection circuits 14 and the branches 24 of the connections 18 between the heating frequency units 16 and the induction heating elements 12, regardless of the operating state.
  • Each protective unit 20 has a capacitor 26.
  • the capacitors 26 have capacitances of essentially 100 pF.
  • the protective units 20 exhibit a resistance between 200 k ⁇ and 600 k ⁇ for the heating current.
  • capacitors with a capacitance in the range of 50 pF to 150 pF are preferably conceivable.
  • the protective unit could comprise any series and/or parallel connection of capacitors.
  • other protective units that would appear sensible to a person skilled in the art are conceivable as an alternative to a capacitor.
  • the induction cooktop device 10 comprises a sensor current supply unit 50, which is provided for supplying the detection circuits 14 with detection current.
  • the sensor current supply unit 50 is also provided for supplying the control unit 28.
  • the sensor current supply unit 50 and the power current supply unit 48 are separate.
  • the sensor current supply unit 50 is connected to a phase 52 of the supply network.
  • the phase 52 to which the sensor current supply unit 50 is connected is different from the phase 40 to which the power current supply unit 48 is connected.
  • the power current supply unit and the sensor current supply unit are connected to the same phase. In both cases, the induction heating elements 12 and the detection circuits 14 are supplied independently of each other.
  • the detection circuits 14 supply the induction heating elements 12 with high-frequency alternating current, which is configured as a detection current.
  • the detection current has a frequency of several MHz.
  • the detection current could have a frequency between 1.5 MHz and 2.2 MHz in an operating state.
  • the protective units 20 have a resistance between 0.7 k ⁇ and 1 k ⁇ for the detection current.
  • one of the detection circuits 14 and one of the induction heating elements 12 each form a resonant circuit.
  • the detection current frequency is essentially 1.5 MHz.
  • the detection current frequency increases depending on the size, shape, and material of the cookware.
  • An output 54 of each of the detection circuits 14 is connected to the control unit 28.
  • the output 54 of the detection circuit 14 is connected to ground via the control unit 28.
  • the control unit 28 determines a cookware characteristic based on a change in the natural frequency of the detection circuit 14.
  • the control unit 28 determines the size, shape, and material of the cookware placed on it based on the magnitude of the change in the natural frequency of the detection current.
  • the connections 18 between the heating frequency units 16 and the induction heating elements 12 are interrupted by the circuit unit 36.
  • An operating state in which the detection circuits 14 detect placed cooking cookware is separate from a heating operating state in which the induction heating elements 12 heat placed cooking cookware.
  • a heating operating state at least one of the connections 18 between the heating frequency units 16 and the induction heating elements 12 is established.
  • the detection circuits 14 branched off from the connections 18 between the heating frequency units 16 and the induction heating elements 12 are short-circuited by the buffer capacitors 42 of the heating frequency unit 16.
  • the buffer capacitors 42 exhibit a low impedance at a frequency of the detection current, thus short-circuiting the detection circuits 14 directly connected to the induction heating elements 12.
  • high-frequency alternating currents flow through the resonant circuits formed by the induction heating elements 12 and the detection circuits 14. These currents have a substantially similar frequency to the heating currents.
  • the detection circuits 14 detect cookware placed on the unit outside of a heating operating state. Outside of a heating operating state, detection currents flow through the resonant circuits formed by the induction heating elements 12 and the detection circuits 14.
  • the number of detection circuits is less than the number of induction heating elements.
  • the detection circuits could be connected to several induction heating elements via multiplexing, with the protection unit being located between the multiplexer and the induction heating elements. It is also conceivable that the protection unit is located between the multiplexer and the input of the detection circuit.
  • the outputs of the detection circuits are connected to the connection points of the induction heating elements furthest from the heating frequency units.
  • an additional protection unit could be provided between the outputs of the detection circuits and the connection points of the induction heating elements furthest from the heating frequency units, in particular in addition to the protection unit that branches off from the connection between the heating frequency unit and the induction heating element.
  • control unit is designed to enable a heating operating state, in particular the operation of the induction heating element, especially only when cooking cookware is in place, and to prevent it in a cooking cookware-free state.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Induction Heating Cooking Devices (AREA)

Claims (8)

  1. Dispositif de table de cuisson à induction comprenant au moins un élément chauffant à induction (12) qui est ménagé pour un échauffement de récipient de cuisson, et comprenant au moins un circuit de détection (14) qui, en interaction avec l'au moins un élément chauffant à induction (12), est ménagé pour une détection de récipient de cuisson, dans lequel l'au moins un circuit de détection (14) est directement relié à l'au moins un élément chauffant à induction (12) indépendamment d'un état de fonctionnement, caractérisé par au moins une unité de fréquence de chauffage (16) pour une alimentation de l'au moins un élément chauffant à induction (12), l'au moins un circuit de détection (14) étant dérivé d'une liaison (18) entre l'au moins une unité de fréquence de chauffage (16) et l'au moins un élément chauffant à induction (12).
  2. Dispositif de table de cuisson à induction selon la revendication 1, caractérisé par au moins une unité de protection (20) qui est ménagée pour protéger au moins l'au moins un circuit de détection (14) contre des tensions extérieures indépendamment d'un état de fonctionnement.
  3. Dispositif de table de cuisson à induction selon la revendication 2, caractérisé en ce que l'au moins une unité de protection (20), indépendamment d'un état de fonctionnement, est raccordée entre une entrée (22) de l'au moins un circuit de détection (14) et un branchement (24) de la liaison (18) entre l'au moins une unité de fréquence de chauffage (16) et l'au moins un élément chauffant à induction (12).
  4. Dispositif de table de cuisson à induction au moins selon la revendication 2, caractérisé en ce que l'au moins une unité de protection (20) présente au moins un condensateur (26).
  5. Dispositif de table de cuisson à induction selon l'une quelconque des revendications précédentes, caractérisé en ce que l'au moins un circuit de détection (14) et l'au moins un élément chauffant à induction (12) forment un circuit oscillant au moins dans un état de fonctionnement.
  6. Dispositif de table de cuisson à induction selon l'une quelconque des revendications précédentes, caractérisé par une unité de commande (28) qui est ménagée pour détecter au moins une caractéristique de récipient de cuisson en fonction d'une modification de la fréquence propre de l'au moins un circuit de détection (14).
  7. Dispositif de table de cuisson à induction selon l'une quelconque des revendications précédentes, caractérisé en ce que l'au moins un circuit de détection (14) est ménagé pour détecter un récipient de cuisson en dehors d'un état de fonctionnement de chauffe.
  8. Table de cuisson à induction comprenant au moins un dispositif de table de cuisson à induction (10) selon l'une quelconque des revendications 1 à 7.
EP14806727.5A 2013-11-05 2014-10-27 Dispositif table de cuisson à induction Active EP3066888B2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ES201331611A ES2535245B1 (es) 2013-11-05 2013-11-05 Dispositivo de campo de cocción por inducción
PCT/IB2014/065630 WO2015068077A1 (fr) 2013-11-05 2014-10-27 Dispositif table de cuisson à induction

Publications (3)

Publication Number Publication Date
EP3066888A1 EP3066888A1 (fr) 2016-09-14
EP3066888B1 EP3066888B1 (fr) 2019-08-07
EP3066888B2 true EP3066888B2 (fr) 2026-01-14

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP14806727.5A Active EP3066888B2 (fr) 2013-11-05 2014-10-27 Dispositif table de cuisson à induction

Country Status (4)

Country Link
US (1) US10694589B2 (fr)
EP (1) EP3066888B2 (fr)
ES (2) ES2535245B1 (fr)
WO (1) WO2015068077A1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
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KR102069581B1 (ko) * 2017-06-26 2020-01-23 엘지전자 주식회사 유도 가열 장치 및 유도 가열 장치의 제어 방법
CN109458638B (zh) * 2018-08-17 2020-09-08 浙江绍兴苏泊尔生活电器有限公司 电磁炉功率控制方法及电磁炉
EP3967108A1 (fr) * 2019-05-10 2022-03-16 BSH Hausgeräte GmbH Ensemble appareil de cuisson
CN112393280A (zh) * 2019-08-19 2021-02-23 广东美的白色家电技术创新中心有限公司 一种电磁灶台和电磁灶台的控制方法
EP4576933A1 (fr) 2023-12-18 2025-06-25 BSH Hausgeräte GmbH Dispositif de table de cuisson à induction, table de cuisson à induction et procédé de fonctionnement d'un dispositif de table de cuisson à induction
WO2025223888A1 (fr) 2024-04-26 2025-10-30 BSH Hausgeräte GmbH Procédé de fonctionnement d'un système de détection de batterie de cuisine d'un dispositif de plaque de cuisson à induction, et dispositif de plaque de cuisson à induction

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EP0561207A2 (fr) † 1992-03-14 1993-09-22 E.G.O. Elektro-Geräte Blanc und Fischer GmbH & Co. KG Commande d'une plaque de cuisson à induction
WO2004107819A1 (fr) † 2003-05-28 2004-12-09 Tubitak-Bilten (Turkiye Bilimsel Ve Teknik Arastirma Kurumu-Bilgi Teknolojileri Ve Elektronik Arastirma Enstitusu) Plan de cuisson par induction
DE10349036A1 (de) † 2003-10-22 2005-05-25 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Elektronisches Vorschaltgerät mit Schutzschaltung für den Schalttransistor eines Wandlers
EP1793653A2 (fr) † 2005-12-02 2007-06-06 LG Electronics Inc. Appareil et procédé pour détecter une charge cuisinière électrique
EP2034801B1 (fr) † 2007-09-05 2012-10-31 Whirlpool Corporation Appareil de cuisson par induction amélioré et procédé pour vérifier les capacités de cuisson d'un appareil de cuisson
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ES2747917T3 (es) 2020-03-12
US10694589B2 (en) 2020-06-23
WO2015068077A1 (fr) 2015-05-14
US20160262213A1 (en) 2016-09-08
ES2747917T5 (en) 2026-03-31
EP3066888B1 (fr) 2019-08-07
ES2535245B1 (es) 2016-02-16
EP3066888A1 (fr) 2016-09-14
ES2535245A1 (es) 2015-05-07

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