EP2692202B1 - Dispositif de chauffage par induction - Google Patents

Dispositif de chauffage par induction Download PDF

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Publication number
EP2692202B1
EP2692202B1 EP12713357.7A EP12713357A EP2692202B1 EP 2692202 B1 EP2692202 B1 EP 2692202B1 EP 12713357 A EP12713357 A EP 12713357A EP 2692202 B1 EP2692202 B1 EP 2692202B1
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EP
European Patent Office
Prior art keywords
induction heating
unit
units
heating
frequency
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Application number
EP12713357.7A
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German (de)
English (en)
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EP2692202A1 (fr
Inventor
Daniel ANTÓN FALCÓN
Claudio Carretero Chamarro
José María De La Cuerda Ortín
Ignacio Garde Aranda
Pablo Jesús Hernández Blasco
Sergio Llorente Gil
Paul Muresan
José Joaquín Paricio Azcona
Diego Puyal Puente
Magdy Saoudi
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BSH Hausgeraete GmbH
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BSH Hausgeraete GmbH
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Publication of EP2692202A1 publication Critical patent/EP2692202A1/fr
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    • 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
    • H05B6/065—Control, e.g. of temperature, of power for cooking plates or the like using coordinated control of multiple induction coils

Definitions

  • the invention is based on an induction heating device according to the preamble of claim 1.
  • Induction cookers which have a control unit, a first and a second inductor and a first and a second inverter, which in an operating mode in which the first induction heating unit is directly connected to the first high frequency generator and the second induction heating unit directly to the second heating frequency unit connected via the at least two induction heating units are connected.
  • the invention is based on an induction heating device, in particular an induction hob device, having at least one control unit, at least one first and one second induction heating unit and at least one first and one second heating frequency unit, which in at least one operating mode, in which the first induction heating unit with the first heating frequency unit is directly connected to the first heating frequency unit, and the second induction heating unit is directly connected to the second heating frequency unit, preferably only to the second heating frequency unit, via which at least two induction heating units are connected.
  • an induction heating device in particular an induction hob device, having at least one control unit, at least one first and one second induction heating unit and at least one first and one second heating frequency unit, which in at least one operating mode, in which the first induction heating unit with the first heating frequency unit is directly connected to the first heating frequency unit, and the second induction heating unit is directly connected to the second heating frequency unit, preferably only to the second heating frequency unit, via which at least two induction heating units are connected.
  • control unit is provided for operating the heating-frequency units in separate operating sections in an operating mode in which the heating-frequency units are connected via the induction heating units.
  • a "control unit” is to be understood as meaning, in particular, an electronic unit which is preferably at least partially integrated in a control and / or regulating unit of the induction heating device and which is preferably one of them is provided to control at least the Schufrequenzüen and / or to regulate.
  • the control unit preferably comprises a computing unit and, in particular in addition to the computing unit, a memory unit with a control and / or regulating program stored therein, which is intended to be executed by the computing unit.
  • heating frequency unit is to be understood in particular as meaning an electrical unit which generates an oscillating electrical signal, preferably at a frequency of at least 1 kHz, in particular of at least 10 kHz, advantageously of at least 20 kHz and in particular of not more than 100 kHz for an induction heating unit.
  • the heating frequency unit is provided to provide a maximum electrical power of at least 1000 W, in particular at least 2000 W, advantageously at least 3000 W, and preferably at least 3500 W, required by the induction heating unit.
  • the heating frequency unit comprises in particular at least one inverter, which preferably has 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 at least one damping capacitor connected in parallel to the bidirectional unipolar switches, which is in particular formed by at least one capacitor.
  • a high-frequency power supply of the induction heating unit can be provided.
  • a voltage tap of the radio-frequency unit is arranged in particular at a common contact point of two bidirectional unipolar switches.
  • An "induction heating unit” is to be understood in particular as a unit having at least one induction heating element.
  • induction heating element is to be understood in particular as a wound electrical conductor, preferably in the form of a circular disk through which high-frequency alternating current flows in at least one operating state.
  • the induction heating element is preferably provided to convert electrical energy into an alternating magnetic field, which is intended to cause in a metallic, preferably at least partially ferromagnetic, heating means, in particular cooking utensils, eddy currents and / or remagnetization effects, which are converted into heat.
  • a "direct connection” is to be understood in particular as meaning an electrical connection which, at least in one Operating state with a current flow of alternating current through the connection with a frequency between 1 kHz and 100 kHz, an impedance that is smaller in magnitude than 10 V / A, in particular less than 1 V / A, preferably less than 0.1 V. / A is and whose amount, in particular over a frequency range of 1 kHz to 100 kHz by a maximum of 100%, in particular a maximum of 40%, preferably a maximum of 10% and preferably a maximum of 5% varies.
  • an "operating section" of a heating frequency unit is to be understood as meaning in particular a time range which preferably has a length of at least 1 ms, in particular of at least 10 ms, in which the heating frequency unit has a frequency which is in particular substantially constant between 1 kHz and 100 kHz is operated.
  • substantially constant it should be understood, in particular, that a value of a variable deviates by a maximum of 25%, in particular by a maximum of 15%, and preferably by a maximum of 5%, from an average value of the variable.
  • "Separate" operating sections are to be understood in particular as operating sections that differ from operating sections that at least partially overlap in time. In particular, a flexible heating device can be achieved.
  • the heating frequency units are intended to be operated over a single phase.
  • a "single phase” is to be understood in particular as a phase of a domestic power connection, preferably a three-phase house connection.
  • both Schufrequenzüen are connected to a single rectifier, which is supplied by the single phase with AC voltage.
  • a simple, inexpensive heating device can be provided.
  • the induction heating device has at least one resonance unit, which in at least one operating state is connected directly to a common contact of at least the first and the second induction heating unit.
  • a "resonance unit” is to be understood in particular as a unit which comprises at least one resonance capacitance, which is preferably formed by at least one capacitor, which differs preferably from a damping capacity and / or a capacitance which is connected in parallel with a switching element.
  • a resonant capacitance is formed by a combination of series and parallel circuits of a plurality of capacitors.
  • the resonance capacity is in particular part of an electrical resonant circuit, in particular an electrical series resonant circuit.
  • the resonance capacitance in at least one operating state is connected in series with the induction heating unit and is particularly advantageously intended to be charged via the induction heating unit by at least one heating frequency unit, in particular if the induction heating unit is raised to a higher electrical potential by the switching arrangement is placed.
  • the resonance capacity is arranged in particular on a side of the induction heating unit facing away from the frequency unit in the direction of a line path.
  • an induction heating unit is operated in a full bridge circuit. In a full-bridge circuit, the induction heating unit is arranged together with a, preferably in series with the induction heating unit, resonant capacitance between two voltage dividing units formed by Schufrequenzajien in the bridge branch.
  • an induction heating unit is operated in a half-bridge circuit.
  • the induction heating unit is arranged between a voltage divider formed by the heating frequency unit and a voltage divider formed by two resonance capacitances in the bridge branch.
  • a "common contact” of the induction heating units is to be understood in particular as a contact which is in each case connected directly to the induction heating units and whose connections to the heating frequency units differ from direct connections.
  • a "contact” is to be understood in particular an electrical connection point, in particular a pole of an electrical component.
  • a cost-reduced induction heating device can be achieved.
  • the control unit is provided, in an operating mode in which the heating frequency units are connected via the induction heating units and operated in mutually differing operating sections, starting points of at least two, in particular at least five, advantageously at least ten and in particular of all successive operating sections of an induction heating unit a maximum of 5 s, in particular a maximum of 2 s, in particular a maximum of 700 ms, advantageously a maximum of 500 ms and preferably a maximum of 300 ms to space.
  • a temporally uniform heat generation can be achieved.
  • the induction heating device has at least one further induction heating unit and a switching arrangement which is provided by switching commands of the control unit, at least three, in particular at least six, advantageously at least ten, different combinations of at least one of the at least two Schufrequenzüen and at least one of to connect at least three induction heating units directly to each other.
  • the switching arrangement has at least two switching elements, which in particular are both arranged between the first induction heating unit and the first heating frequency unit.
  • the switching elements By arranging the switching elements "between" the heating frequency unit and the induction heating unit, it should be understood in particular that in an operating state in which the induction heating unit is supplied with high-frequency alternating current, the induction heating unit with the switching means in any order on a single contact, preferably a voltage tap, the heating frequency unit are arranged in series.
  • the first switching element with the Schufrequenzü with the first switching element, the second switching element and the second switching element, the induction heating directly connected.
  • the control unit is at least provided to at least two of the induction heating units alternately, preferably periodically alternating, in particular with a period of up to 7 s, in particular a maximum of 5 s, preferably a maximum of 2 s, to supply one of the heating frequency units with high-frequency alternating current, in addition in particular, the switching states of the switching arrangement and / or the frequency of the heating frequency unit can be changed by the control unit.
  • a flexible, cost-reducing induction heating device can be provided.
  • reduced wear can be achieved by less frequent control of switching elements of the switching arrangement.
  • the invention advantageously has at least one sensor which, at least in an operating mode in which the first induction heating unit is connected directly to the first high frequency generator and the second induction heating unit is directly connected to the second heating frequency unit, is connected via the at least two induction heating units , is provided, at least one performance characteristic of the first induction heating unit in an operating section of second induction heating unit to determine.
  • a "performance characteristic” should be understood to mean, in particular, an electrical parameter, preferably a magnitude of an electrical current, an electrical voltage and / or the electrical power.
  • the sensor has a plurality of sensor elements which are provided to jointly determine and / or estimate an electrical power.
  • estimating a quantity, it should be understood, in particular, that a determined value of the size deviates at most 30%, in particular at most 20%, advantageously at most 10% and preferably at most 5% from an exact value of the variable. In particular, it is possible to achieve a reduction of flicker, ie voltage fluctuations in the mains voltage caused by power fluctuations.
  • the control unit is provided, in an operating mode in which the heating frequency units are connected via the induction heating units and in which at least one average power is required for both the first and the second induction heating unit, to operate the heating frequency units simultaneously in a phase-delayed control mode .
  • An average power should in particular be understood to mean a power of more than 800 W, preferably more than 1000 W and in particular more than 1200 W.
  • a sum of the mean powers is greater than 1500 W, advantageously greater than 1800 W and preferably greater than 2000 W.
  • a threshold of the requested powers for a change to the phase-delayed control mode is dependent on heating means heated by the first and second induction heating units , in particular cookware.
  • a "phase-delayed control mode” is to be understood in particular as a mode in which the heating frequency units operate at the same set frequency and a power output via the induction heating units in particular from the set frequency, a phase shift of the switching times of the heating frequency units against each other and / or a duty cycle of the generated high-frequency alternating currents is dependent. In particular, increased flexibility can be achieved.
  • FIG. 1 shows a formed as an induction hob home appliance 10 with an induction heating device designed as an induction heating 12 with four induction heating 20, 22, 24, 26, each having an induction heating element designed as an inductor.
  • the induction heating units 20, 22, 24, 26 are disposed below a cooktop panel 14.
  • the induction heating device 12 has a power module 18 operated by a single phase 16 of a three-phase in-house connection, which is provided to supply the induction heating units 20, 22, 24, 26 with high-frequency alternating current with a frequency between 20 kHz and 100 kHz ,
  • the power module 18 has two heating frequency units 30, 32, which are intended to be operated via the single phase 16 and to supply the induction heating units 20, 22, 24, 26 ( Fig. 2 ).
  • the frequency of the heating-frequency units 30, 32 is dependent inter alia on a heating power requested for the induction heating unit 20, 22, 24, 26 via an operating unit 28 and a cooking utensil which is arranged in a cooking zone on the hob plate 14 above the induction heating unit 20, 22, 24, 26, and is determined by a control unit 34 of the induction heater 12.
  • the control unit 34 has an arithmetic unit, a memory unit and an operating program stored in the memory unit, which is intended to be executed by the arithmetic unit.
  • FIG. 2 shows a circuit for the induction heating device 12.
  • a voltage applied to a phase 16 between 220 V and 230 V with a network frequency between 49 Hz and 51 Hz is rectified in a rectifier 36 and partially stored in a buffer capacity 38.
  • the poles of the buffer capacitor 38 form two external contacts 40, 42 between which a pulsating DC voltage is applied.
  • the heating frequency units 30, 32 are arranged between the external contacts 40, 42 and convert the pulsating DC voltage into high-frequency alternating current.
  • the heating-frequency units 30, 32 each have two switching elements 44, 46, which are connected in series between the external contacts 40, 42 and designed as bidirectional unipolar switches, each having a parallel-connected damping capacitor 48, 50.
  • the switching elements 44, 46 are each formed by an IGBT 52, 54 (insulated gate bipolar transistor) and a parallel connected diode 56, 58.
  • a voltage tap 60, 62 is arranged in each case at a common contact of the two IGBTs 52, 54.
  • the control unit 34 causes by alternating, high-frequency control of the two IGBTs 52, 54 at the voltage tap 60 a high-frequency alternating voltage with pulsating amplitude, which follows a high-frequency alternating current when connecting an induction heating unit 20, 22, 24, 26.
  • the voltage taps 60, 62 of the heating frequency units 30, 32 are connected to a switching arrangement 64 having six relay elements formed switching elements 66, 68, 70, 72, 74, 76, which are designed as a single pole changeover switch, and by switching commands of the control unit 34 thereto it is intended to directly connect 16 different combinations of up to two of the two heating frequency units 30, 32 and up to two of the four induction heating units 20, 22, 24, 26.
  • the switching elements 66, 68, 70, 72, 74, 76 designed as single-pole changeover switches have three contacts and two switching states.
  • the first contact In a first switching state, the first contact is directly connected to the second contact and in a second switching state, the first and the third contact are directly connected (in the illustration, the first contact is arranged on the left and the second contact on the top right).
  • the switching elements 66, 68, 70, 72, 74, 76 are arranged in a cascaded circuit.
  • a first contact of the switching element 66 is connected directly to the voltage tap 60 of the heating frequency unit 30.
  • a second and a third contact of the switching element 66 is in each case directly connected to a first contact of the two switching elements 68, 70.
  • the induction heating units 20, 22, 24, 26 are each directly connected to one of the second or third contacts of the switching elements 68, 70.
  • each of the induction heating units 20, 22, 24, 26 can be so by suitable switching states of the switching elements 66, 68, 70, 72, 74, 76 individually with each of the heating frequency units 30, 32 are directly connected. Furthermore, any two of the induction heating units 20, 22, 24, 26 may be directly connected to different induction heating units 30, 32 simultaneously. Likewise, for each of the induction heating units 20, 22, 24, 26, a boost operation in which a single induction heating unit 20, 22, 24, 26 is simultaneously directly connected to both heating frequency units 30, 32 is possible. The induction heating units 20, 22, 24, 26 are each operated in a half-bridge circuit.
  • the induction heating units 20, 22, 24, 26 each have a common contact 78, 79, each directly connected to a resonance unit 80, 81 formed by two resonance capacitances 82, 84 and 83, 85, each of individual capacitors consist.
  • the resonant capacitances 82, 84 and 83, 85 are each connected in series and one of the resonant capacitances 82, 83 is connected directly to one of the external contacts 40 and the other of the resonant capacitors 84, 85 is connected directly to the other external contact 42.
  • Both of the resonance capacitances 84, 82 and 83, 85 are each directly connected to the two induction heating units 20, 22 and 24, 26, respectively.
  • the induction heating device 12 thus has a control unit 34, a first and a second induction heating unit 20, 22 and a first and a second heating frequency units 30, 32, which in an operating mode in which the first induction heating unit 20 is directly connected to the first heating frequency unit 30 and the second induction heating unit 22 is directly connected to the second heating frequency unit 32 through which two induction heating units 20, 22 are connected. Furthermore, it is possible for the heating frequency units 30, 32 to be connected via the third and the fourth induction heating units 24, 26. Furthermore, the induction heating device 12 designed as a current transformer ammeter with analog-to-digital converter, which are provided as sensors 86, 88 for determining a current flowing through the voltage tap 60, 62 of the heating frequency units 30, 32 amperage.
  • the ammeters are each directly connected to the voltage tap 60, 62 of one of the heating frequency units 30, 32 and the first contact of the switching elements 66, 72 of the switching arrangement 64 and thus arranged between an induction heating unit 20, 22, 24, 26 and a heating frequency unit 30, 32.
  • the control unit 34 is provided for operating the heating frequency units 30, 32 in operating mode in which the heating frequency units 30, 32 are connected via the induction heating units 20, 22 and 24, 26, respectively, in mutually different operating sections 90, 91.
  • the FIG. 3 shows a schematic, exemplary course of the electrical power P 1 , P 2 , in such a Operating state in the first and second induction heating units 20, 22 are implemented, and a sum P SUM of these services P 1 , P 2 as a function of the time t.
  • the switching elements 66, 68, 72, 74 permanently maintain their switching state in this operating mode, so that the first induction heating unit 20 is continuously directly connected directly to the first heating frequency unit 30 and the second induction heating unit 22 is continuously directly connected to the second heating frequency unit 32.
  • the control unit 34 is provided, in the operating mode in which the heating frequency units 30, 32 are connected via the induction heating units 20, 22 and are operated in mutually differing operating sections 90, 92 and 91, 93, starting points of successive operating sections 90, 92 or 91, 93 of the first and second induction heating unit with 2 s to space.
  • the power curve shown in the diagram is repeated periodically with a period t MUX of 2 s.
  • a first operating section 91 of the induction heating unit 20 follows, in which it is supplied by the first heating frequency unit 30 with high-frequency alternating current.
  • the other heating frequency unit 32 is inactive in this operating state, ie does not generate a high-frequency alternating current.
  • part of the high frequency alternating current of the first heating frequency unit 30 flows from the voltage tap 60 via the switching arrangement 64, the first induction heating unit 20, common contact 79, the second induction heating unit 22 and the switching arrangement 64 to the voltage tap 62 of the second heating frequency unit 32 and thence via the diodes and attenuation capacities of the second heating frequency unit 32 and thus generates a power output via the second induction heating unit 22.
  • the ammeter, between the second Schufrequenzaise 32 and the second induction heating unit 22 is arranged as a sensor 88, is provided to an electric current and thus a performance of the second induction heating unit 22 in the first operating section 91 of the first induction heating unit 20 to determine.
  • a voltage measuring device 98 which measures the voltage between the external contacts 40, 42, determines the electrical power that is converted in the second induction heating unit 22. This is between 0 W and 100 W depending on the power of the first induction heating unit 20 and increases with decreasing frequency of the heating frequency unit 30.
  • the first operating section 91 may correspond to the selected power of Indutiksweiser 20 and the sum of the selected for the induction heating units 20, 22, any duration t 1 between 0 and t MUX , ie 2 s, which in particular corresponds to a multiple of half the period of the grid frequency.
  • the second induction heating unit 22 is supplied with high-frequency alternating current by the second heating-frequency unit 32.
  • the other heating frequency unit 30 is inactive in this operating state, ie does not generate a high-frequency alternating current. Due to the fact that during the second operating section 92 the first heating frequency unit 30 is connected to the second heating frequency unit 32 via the induction heating units 20, 22, part of the high frequency alternating current of the second heating frequency unit 32 flows through the diodes 56, 58 and damping capacities 48, 50 of the second heating frequency unit 32 and thus generates a power output via the first induction heating unit 20.
  • the ammeter which is arranged as a sensor 88 between the first heating frequency unit 30 and the first induction heating unit 20, is intended to provide an electric current and thus a performance characteristic of the first induction heating unit 20 in FIG second operating section of the second induction heating unit 22 to determine.
  • the voltage meter 98 which measures the voltage between the external contacts 40, 42, again determines the electrical power which is converted in the first induction heating unit 20 during the operating state 92 of the second induction heating unit 22. This is between 0 and 100 W depending on the power of the second induction heating unit 22 and increases with decreasing frequency of the heating frequency unit 32.
  • the second operating section 92 has a duration t 2 which corresponds to t MUX , ie 2 s, less the duration of the first operating section 91.
  • the second operating section 92 is again followed by an operating section 93, in which the induction heating unit 20 is supplied with high-frequency alternating current by the heating-frequency unit 30.
  • the starting point of the operating section 93 is spaced apart from the starting point of the operating section 91 by t MUX , ie 300 ms.
  • the control unit 34 is provided for minimizing power surges due to power fluctuations by reducing the sum P SUM of the powers P 1 , P 2 of the two induction heating units 20, 22 is kept substantially constant in the different operating sections 90, 92.
  • control unit 34 is provided in an operating mode in which the heating frequency units 30, 32 are connected via the induction heating units 20, 22 and in which a power is required for both the first and the second induction heating units 20, 22 which is larger as 1000 W or by a sum of the requested powers is greater than 2000 W, the Schufrequenzüen 20, 22 operate simultaneously in a phase-delayed drive mode.
  • switching elements are arranged between the induction heating units 20, 22, 24, 26 and the resonance units 80, 81 or in which operating modes are permitted in which a sum of the lengths of the operating sections 90, 91, 92, 93 is shorter is the period T mux at which the starting points of the operating sections 91, 93 and 90, 92 are spaced apart.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • General Induction Heating (AREA)
  • Induction Heating Cooking Devices (AREA)

Claims (7)

  1. Dispositif de chauffage à induction comprenant au moins une unité de commande (34), comprenant au moins une première et une deuxième unités de chauffage par induction (20, 22, 24, 26), comprenant au moins une première et une deuxième unités de fréquence de chauffage (30, 32), lesquelles, dans au moins un mode de fonctionnement dans lequel la première unité de chauffage par induction (20, 22, 24, 26) est directement reliée à la première unité de fréquence de chauffage (30, 32) et dans lequel la deuxième unité de chauffage par induction (20, 22, 24, 26) est directement reliée à la deuxième unité de fréquence de chauffage (30, 32), sont reliées par l'intermédiaire des au moins deux unités de chauffage par induction (20, 22, 24, 26), l'unité de commande (34), dans un mode de fonctionnement dans lequel les unités de fréquence de chauffage (30, 32) sont reliées par l'intermédiaire des unités de chauffage par induction (20, 22, 24, 26), étant ménagée pour faire fonctionner les unités de fréquence de chauffage (30, 32) dans des sections fonctionnelles (90, 91, 92, 93) se différenciant les unes des autres, et comprenant au moins une unité de résonance (80, 81) qui, dans au moins un état de fonctionnement, est directement reliée à un contact commun (78, 79) au moins de la première et de la deuxième unités de chauffage par induction (20, 22, 24, 26), caractérisé en ce que l'unité de commande (34), dans un mode de fonctionnement dans lequel les unités de fréquence de chauffage (30, 32) sont reliées par l'intermédiaire des unités de chauffage par induction (20, 22, 24, 26) et dans lequel au moins une puissance moyenne est demandée aussi bien pour la première que pour la deuxième unités de chauffage par induction (20, 22, 24, 26), est ménagée pour faire fonctionner simultanément les unités de fréquence de chauffage (30, 32) dans un mode avec commande retardée en phase.
  2. Dispositif de chauffage par induction selon la revendication 1, caractérisé en ce que les unités de fréquence de chauffage (30, 32) sont ménagées pour être mises en fonction par l'intermédiaire d'une seule phase (16).
  3. Dispositif de chauffage par induction selon l'une quelconque des revendications précédentes, caractérisé en ce que l'unité de commande (34), dans un mode de fonctionnement dans lequel les unités de fréquence de chauffage (30, 32) sont reliées par l'intermédiaire des unités de chauffage par induction (20, 22, 24, 26) et dans lequel des sections fonctionnelles (91, 92) se différenciant les unes des autres sont mises en fonction, est ménagée pour espacer au maximum d'une seconde des points de départ d'au moins deux sections fonctionnelles (91, 93) successives au moins de la première unité de chauffage par induction (20, 22, 24, 26).
  4. Dispositif de chauffage par induction selon l'une quelconque des revendications précédentes, caractérisé par au moins une unité supplémentaire de chauffage par induction (20, 22, 24, 26) et par un dispositif de commutation (64) qui est ménagé, en raison d'instructions de commutation de l'unité de commande (34), pour relier directement entre elles au moins trois combinaisons différentes d'au moins une des au moins deux unités de fréquence de chauffage (30, 32) et au moins une des au moins trois unités de chauffage par induction (20, 22, 24, 26).
  5. Dispositif de chauffage par induction selon l'une quelconque des revendications précédentes, caractérisé par au moins un capteur (86, 88) qui, dans au moins un mode de fonctionnement dans lequel la première unité de chauffage par induction (20, 22, 24, 26) est directement reliée au premier générateur de haute fréquence (30, 32) et dans lequel la deuxième unité de chauffage par induction (20, 22, 24, 26) est directement reliée à la deuxième unité de fréquence de chauffage (30, 32), par l'intermédiaire desquelles au moins deux unités de chauffage par induction (20, 22, 24, 26) sont reliées, est ménagé pour mesurer au moins une grandeur caractéristique de puissance de la première unité de chauffage par induction (20, 22, 24, 26) dans la section fonctionnelle (90, 92) de la deuxième unité de chauffage par induction (20, 22, 24, 26).
  6. Appareil ménager comprenant un dispositif de chauffage par induction (12) selon l'une quelconque des revendications précédentes.
  7. Procédé de fonctionnement d'un dispositif de chauffage par induction (12) selon l'une quelconque des revendications 1 à 5, comprenant au moins une unité de commande (34), comprenant au moins une première et une deuxième unités de chauffage par induction (20, 22, 24, 26), comprenant au moins une première et une deuxième unités de fréquence de chauffage (30, 32), lesquelles, dans au moins un mode de fonctionnement dans lequel la première unité de chauffage par induction (20, 22, 24, 26) est directement reliée à la première unité de fréquence de chauffage (30, 32) et dans lequel la deuxième unité de chauffage par induction (20, 22, 24, 26) est directement reliée à la deuxième unité de fréquence de chauffage (30, 32), sont reliées par l'intermédiaire des au moins deux unités de chauffage par induction (20, 22, 24, 26), les unités de fréquence de chauffage (30, 32), dans un mode de fonctionnement dans lequel les unités de fréquence de chauffage (30, 32) sont reliées par l'intermédiaire des unités de chauffage par induction (20, 22, 24, 26), étant mises en fonction par l'unité de commande (34) dans des sections fonctionnelles (90, 91, 92, 93) se différenciant les unes des autres, et comprenant au moins une unité de résonance (80, 81) qui, dans au moins un état de fonctionnement, est directement reliée à un contact commun (78, 79) au moins de la première et de la deuxième unités de chauffage par induction (20, 22, 24, 26), caractérisé en ce que dans un mode de fonctionnement dans lequel les unités de fréquence de chauffage (30, 32) sont reliées par l'intermédiaire des unités de chauffage par induction (20, 22, 24, 26) et dans lequel au moins une puissance moyenne est demandée aussi bien pour la première que pour la deuxième unités de chauffage par induction (20, 22, 24, 26), les unités de fréquence de chauffage (30, 32) sont simultanément mises en fonction dans un mode avec commande retardée en phase par l'unité de commande (34).
EP12713357.7A 2011-03-30 2012-03-19 Dispositif de chauffage par induction Active EP2692202B1 (fr)

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ES201130485 2011-03-30
PCT/IB2012/051302 WO2012131526A1 (fr) 2011-03-30 2012-03-19 Dispositif de chauffage par induction

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EP2692202B1 true EP2692202B1 (fr) 2017-01-04

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ES2673130B1 (es) * 2016-12-19 2019-03-28 Bsh Electrodomesticos Espana Sa Dispositivo de aparato domestico de coccion por induccion con una matriz de elementos de calentamiento
ES2673132B1 (es) * 2016-12-19 2019-03-28 Bsh Electrodomesticos Espana Sa Dispositivo de aparato de cocción por inducción.
ES2764740A1 (es) * 2018-12-04 2020-06-04 Bsh Electrodomesticos Espana Sa Dispositivo de aparato de cocción
CN115299180A (zh) * 2020-01-07 2022-11-04 Ghsp公司 感应式灶台显示器

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FR2839605B1 (fr) * 2002-05-07 2004-09-10 Elka Module de cuisson electrique a induction et procede de commande du module
ES2300168B1 (es) * 2005-10-27 2009-05-08 Bsh Electrodomesticos España, S.A. Encimera de cocina y procedimiento para el funcionamiento de una encimera de cocina.
ES2330496B1 (es) * 2007-10-31 2010-09-08 Bsh Electrodomesticos España, S.A. Dispositivo de coccion.
DE102008042512A1 (de) * 2008-09-30 2010-04-01 BSH Bosch und Siemens Hausgeräte GmbH Kochfeld und Verfahren zum Betreiben eines Kochfelds
JP5317633B2 (ja) * 2008-11-11 2013-10-16 キヤノン株式会社 定着装置
CN102171919B (zh) * 2009-08-04 2013-11-13 松下电器产业株式会社 电力变换装置及感应加热装置
ES2384919B1 (es) * 2009-12-28 2013-05-20 Bsh Electrodomésticos España, S.A. Dispositivo de aparato de cocción.
RU107012U1 (ru) * 2011-03-17 2011-07-27 Общество с ограниченной ответственностью "АгроИнновация" Система индукционной обработки жидких пищевых продуктов

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RU2567853C2 (ru) 2015-11-10
WO2012131526A1 (fr) 2012-10-04
EP2692202A1 (fr) 2014-02-05
CN103548416B (zh) 2016-09-07
CN103548416A (zh) 2014-01-29
RU2013144044A (ru) 2015-05-10

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