EP3240361B1 - Appareil de cuisson à chauffage par induction - Google Patents

Appareil de cuisson à chauffage par induction Download PDF

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Publication number
EP3240361B1
EP3240361B1 EP17156479.2A EP17156479A EP3240361B1 EP 3240361 B1 EP3240361 B1 EP 3240361B1 EP 17156479 A EP17156479 A EP 17156479A EP 3240361 B1 EP3240361 B1 EP 3240361B1
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EP
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Prior art keywords
heating
inverter circuit
coils
coil
area
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EP17156479.2A
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German (de)
English (en)
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EP3240361A1 (fr
Inventor
Takuya Hashimoto
Ryuuji Nagata
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Panasonic Intellectual Property Management Co Ltd
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Panasonic Intellectual Property Management Co Ltd
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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 present disclosure relates to an induction heating cooker used in kitchens for general households.
  • an induction heating cooker of this type is disclosed in, for example, Japanese Patent Unexamined Publication No. 2005-267996 .
  • This induction heating cooker includes a plurality of heating coils for induction heating of a heating target object, a plurality of inverter circuits, input current detection means, switching voltage detection means, and control means.
  • the control means controls the inverter circuits. In a case where a plurality of heating target objects are simultaneously heated, the control means suppresses an interference sound of the heating target object by driving the corresponding inverter circuits at the same frequency.
  • the heating coil which is operated first in a case where the switching voltage with respect to the input current is larger than the predetermined value, if induction heating is performed at the driving frequency as it is by the heating coil, there is a possibility that voltage applied to the switching means becomes excessive and the switching element may be destroyed.
  • control means reduces (switches) the driving frequency of the inverter circuit corresponding to the heating coil operated first until an optimum driving frequency to obtain the rated input power.
  • induction heating is performed with respect to the heating target object.
  • the driving frequency of the heating coil operated after the second is matched to the optimum driving frequency of the heating coil operated first.
  • the driving frequency of the inverter circuit is always fixed to a driving frequency approaching to an audible range during heating. Therefore, there is a possibility that the user may hear a sound of the driving frequency of the inverter circuit, so that the user feels discomfort.
  • the present disclosure provides the induction heating cooker which can suppress the pot noise caused by a difference between the driving frequencies of the inverter circuits corresponding to the plurality of heating coils and enables the user to have friendly usability while reducing a concern that the user hears the sound of the driving frequency of the inverter circuit.
  • an induction heating cooker including: a top plate in which a heating target object is placed; a plurality of heating coils which are disposed under the top plate and heat the heating target object; a inverter circuit which is provided corresponding to each of the plurality of heating coils and supplies high-frequency current to each of the heating coils; a controller which controls an operation of the inverter circuit; and an operation display which is operated by a user, in which the inverter circuit includes a switching unit which switches current of a resonance circuit, and the controller includes a conduction time detector which detects a conduction period of time of the switching unit.
  • the controller is configured to; in a case where the conduction periods of time of the switching units of a first inverter circuit corresponding to the first heating coil and a second inverter circuit corresponding to the second heating coil are equal to or less than a predetermined value, make driving frequencies of the switching unit of the first inverter circuit and the second inverter circuit be a predetermined driving frequency; in a case where the conduction period of time of the switching unit is longer than the predetermined value, make the driving frequency of the first inverter circuit or the second inverter circuit which has been detected as having the conduction period of time longer than the predetermined value be smaller than the predetermined driving frequency; and inductively heat the heating target object by the first heating coil and the second heating coil.
  • the controller in a case where the distance between the first heating coil and the second heating coil is smaller than the first predetermined distance, the controller may be configured to drive the first inverter circuit and the second inverter circuit at the same frequency.
  • the top plate includes a first heating area and a second heating area on which the heating target object is placed, in the first heating area, three or more of the plurality of heating coils are arranged in parallel in a front-back direction or a right-left direction of the induction heating cooker and the heating coil operated is switched according to the heating target object, the second heating area is formed to have a heating coil having a larger diameter than a diameter or a minor axis of one of the plurality of the heating coils constituting the first heating area, the controller may be configured to, in a case where the plurality of heating coils of the first heating area and the second heating area are simultaneously operated, respectively drive the inverter circuits corresponding to the heating coils at the same frequency; and in a case where the plurality of heating target objects are simultaneously heated in the first heating area and the second heating area, determine the driving frequencies of the inverter circuits respectively corresponding to the heating coils according to the distance between the heating coils of the first
  • the user can freely select a position in which the heating target object is placed on the first heating area, so that usability can be improved and a limited space can be effectively used.
  • the second heating area may be provided at least on the right or left of the first heating area.
  • FIG. 1 is a diagram illustrating an overall sectional configuration of an induction heating cooker according to EMBODIMENT 1 of the present disclosure.
  • FIG. 2 is a diagram illustrating a circuit configuration of the induction heating cooker.
  • heating target objects 1a and 1b placed on top plate 2 are heated by heating coils 3a and 3b.
  • Inverter circuits 4a and 4b respectively supply high frequency resonance current to heating coils 3a and 3b.
  • heating coil 3 is representative of heating coils 3a and 3b
  • inverter circuit 4 is representative of inverter circuits 4a and 4b.
  • top plate 2 formed of heat-resistant glass which is an insulator is provided. Heating target objects 1a and 1b are placed to respectively face heating coils 3a and 3b with top plate 2 interposed therebetween.
  • Inverter circuit 4 is connected to an alternating current (AC) power supply through a rectifier circuit and a smoothing circuit connected to the rectifier circuit.
  • AC alternating current
  • the rectifier circuit is configured to have a diode bridge for converting AC voltage from the AC power supply into direct current (DC) voltage.
  • the smoothing circuit is configured to have a choke coil and a smoothing capacitor.
  • a serial connection body of first switching element (IGBT: Insulated Gate Bipolar Transistor) 20a and second switching element (IGBT) 20b respectively including a reverse conduction diode therein is connected to the smoothing circuit as a switching unit.
  • the resonance circuit is connected between a connection point between first switching element 20a and second switching element 20b and a low potential side or a high potential side of the smoothing capacitor constituting the smoothing circuit (low potential side in FIG. 2 ).
  • the resonance circuit is formed to have heating coil 3 which inductively heats heating target object 1 and a resonance capacitor which resonates with heating coil 3 being connected with each other in series.
  • inverter circuit 4 is configured to have first switching element 20a and second switching element 20b so that the high frequency resonance current is supplied to heating coil 3. Furthermore, first switching element 20a and second switching element 20b are collectively referred to as switching element 20.
  • an input current detector is provided in the induction heating cooker for detecting input current of inverter circuit 4.
  • circuit configuration of the induction heating cooker including inverter circuit 4 is not limited to the above described configuration and can use known ones.
  • heating coil 3a and heating coil 3b are disposed so that distance X between heating coil 3a and heating coil 3b is a first predetermined distance (for example, 4 cm).
  • distance X is a distance between nearest positions between an outer periphery of first heating coil 3a and an outer periphery of second heating coil 3b.
  • the first predetermined distance is set to a distance (for example, 4 cm) so that magnetic flux from a plurality of heating coils 3a and 3b does not enter to one heating target object 1.
  • operation display 8 is provided to perform an input by a user.
  • Controller 5 exclusively and alternately conducts first switching element 20a and second switching element 20b illustrated in FIG. 2 at a constant frequency and controls output of inverter circuit 4 based on a signal transmitted from operation display 8, so that start or stop of heating is performed.
  • operation display 8 displays information recognized by induction heating cooker based on a signal transmitted from controller 5. With this, the information is notified to the user, and the user is encouraged to operate the induction heating cooker.
  • controller 5 includes conduction time detector 6 (see FIG. 1 ) for detecting a conduction period of time of switching element 20. Further, controller 5 includes a resonant voltage detector for detecting resonance voltage of inverter circuit 4 and a heating target object detector for determining whether or not heating target object 1 is placed on top plate 2 based on a detected value of the input current detector and the resonant voltage detector.
  • Impedance of heating coil 3 is changed depending on presence or absence, size, and the like of heating target object 1 placed above heating coil 3, and thus the current flowing through inverter circuit 4 and the resonance voltage are changed. Accordingly, it is possible to detect presence or absence of heating target object 1 by detecting the resonance voltage.
  • controller 5 controls a period of time of on-state of switching element 20, that is, the conduction period of time so that detected current in the input current detector is a predetermined value.
  • the period of time of on-state of switching element 20 is increased, current flowing through heating coil 3 is increased and the resonance voltage becomes higher by heating coil 3 and the resonant capacitor.
  • the heating target object detector makes the current for detection flow through heating coil 3 and detects change of the detected value of the resonance voltage accordingly. Then, the heating target object detector determines whether or not there is heating target object 1 above heating coil 3 by comparing the amount of change of the detected value with a threshold which is set in the heating target object detector. Further, when the heating target object detector determines that heating target object 1 is disposed above heating coil 3, the heating target object detector outputs a detection signal to controller 5.
  • heating target object 1 is detected using the resonance voltage
  • FIG. 3 is a flowchart illustrating heating control of the induction heating cooker according to EMBODIMENT 1.
  • the heating target object detector determines whether or not heating target objects 1a and 1b are placed above heating coils 3a and 3b.
  • controller 5 controls inverter circuits 4a and 4b and performs heating of heating target objects 1a and 1b so that thermal power becomes thermal power displayed on operation display 8 (S04) .
  • controller 5 causes operation display 8 to display that heating target object 1 is not placed (for example, "--" is displayed), and does not perform heating (No in S03).
  • the heating target object detector determines whether or not there is heating target object 1 at a constant period (for example, a period of two seconds). As a result, even in a case where heating target object 1 is placed halfway, it is possible to immediately determine presence or absence of heating target object 1 and to perform heating. In addition, when a state in which heating target object 1 is not placed continues for a constant period of time (for example, one minute), controller 5 determines that the user is not willing to heat and returns to a state in which the power switch is pressed (that is, a state where inverter circuit 4 is not driven).
  • the user presses the heating on / off key respectively corresponding to heating coils 3a and 3b in operation display 8.
  • controller 5 Next, an operation of controller 5 will be described.
  • Controller 5 includes conduction time detector 6 for detecting the conduction period of time of switching element 20(IGBT) as described above.
  • a predetermined value for example, 32 ⁇ s
  • controller 5 drives inverter circuit 4 at a predetermined driving frequency (for example, 23 kHz, a period is 43.4 ⁇ s)without changing a driving frequency to inductively heat heating target object 1 (S06).
  • controller 5 reduces the driving frequency (for example, 20.8 kHz, a period is 48 ⁇ s)of inverter circuit 4 to inductively heat heating target object 1 (S07).
  • distance X between heating coil 3a and heating coil 3b is equal to or more than the first predetermined distance (for example, 4 cm), it is possible to prevent magnetic flux from the plurality of heating coils 3a and 3b from entering into one heating target object 1. Accordingly, even in a case where the driving frequencies of inverter circuits 4a and 4b corresponding to the plurality of heating coils 3a and 3b are different from each other, an occurrence of a pot noise is suppressed.
  • EMBODIMENT 1 has been described using two heating coils 3a and 3b, the present disclosure is not limited to such a configuration.
  • the plurality of heating coils 3 may be arranged in a matrix shape in the front-back and the right-left.
  • heating target object 1 can be disposed at an arbitrary position on top plate 2 by the user.
  • Heating target object 1 is heated by one or more heating coils 3 (heating coil group) disposed under heating target object 1.
  • the driving frequency of inverter circuit 4 is determined and induction heating is performed according to distance X between the heating coil group and nearest heating coil 3 from the heating coil group which respectively heat heating target object 1.
  • An overall sectional configuration and a circuit configuration of the induction heating cooker according to EMBODIMENT 2 are the same as those in the induction heating cooker according to EMBODIMENT 1 of FIG. 1 . Therefore, the same reference numerals are given to components of the same function and the same configuration as those of the induction heating cooker of EMBODIMENT 1, and description thereof is omitted.
  • the driving frequencies of all of inverter circuits 4a and 4b corresponding to the plurality of heating coils 3a and 3b are set to same frequency (for example, 23 kHz).
  • the induction heating cooker is configured so that total electric power is restricted in order to prevent breaker interruption in a case where the plurality of heating coils 3 are simultaneously operated and the heating target object is heated. Accordingly, in a case where the plurality of heating coils 3 are simultaneously operated, output power from one inverter circuit 4 becomes lower as compared with when single heating coil 3 is operated. Therefore, even in a case where small thermal power is set, it is possible to provide desired power without reducing the driving frequency of inverter circuit 4. Accordingly, a possibility that the user approaching to an audible range of the driving frequency can hear the sound of the driving frequency is reduced.
  • the driving frequency of inverter circuit 4 is controlled in the same manner as EMBODIMENT 1. Specifically, in a case where the conduction period of time of switching element 20 of inverter circuit 4 is larger than the predetermined value, the driving frequency of inverter circuit 4 is reduced (for example, 20.8 kHz).
  • An interference sound of heating target object 1 is caused by magnetic flux of different frequency bands from the plurality of heating coils 3 entering into one heating target object 1. Accordingly, in a case where distance X between heating coils 3 is large, and magnetic flux from the plurality of heating coils 3 does not enter into heating target object 1, it is not necessary to make the driving frequencies of the inverter circuits 4 corresponding to heating coils 3 be the same frequency even when the plurality of heating coils 3 are simultaneously operated to heat heating target object 1.
  • FIG. 4 is a plan view of the induction heating cooker according to EMBODIMENT 3 of the present disclosure.
  • FIG. 5 is a circuit diagram of a switching unit for switching the heating coils of the induction heating cooker according to Embodiment 3 of the present disclosure.
  • EMBODIMENT 3 a specific configuration example of a heating area on top plate 2 and an operation of the induction heating cooker in the configuration will be described.
  • the induction heating cooker of EMBODIMENT 3 includes first heating area 11 and second heating area 12 (12a and 12b) in which heating target object 1 is placed on top plate 2.
  • Heating coil 31 corresponds to first heating area 11.
  • heating coil 31 three or more (four in FIG. 4 ) heating coils of circular or elliptical shape are arranged in parallel in the front-back direction or the right-left direction (right-left direction in FIG. 4 ).
  • heating coil 32 (32a and 32b) corresponds to second heating area 12 (12a and 12b).
  • Heating coil 32 is configured to have heating coils of which a diameter is larger than a diameter or minor axis of heating coil 31 constituting first heating area 11.
  • heating coil 31 which heats heating target object 1c according to a size or position of heating target object 1c in first heating area 11.
  • switching unit 7 (7a to 7d) switches a connection of the plurality of heating coils 31 (31a to 31d) corresponding to first heating area 11.
  • Controller 5 controls a contact point (for example, contact point of relay) of switching unit 7 to switch heating coil 31 to be connected according to heating target object 1c placed on top plate 2.
  • heating target object 1c when heating target object 1c is placed across two (31c and 31d) of a right side among four oval heating coils 31a to 31d in a line in first heating area 11 and the user operates operation display 8 to start heating, a connection of heating coil 31 is switched by switching unit 7. With this, heating is performed by two heating coils 31c and 31d of the right side, and high-frequency current is not supplied to two remaining heating coils 31a and 31b of a left side.
  • heating target object 1c is placed across two (31b and 31c) of the center of four oval heating coils 31 in a line in first heating area 11 and the user operates operation display 8 to start heating
  • the connection of heating coil 31 is switched by switching unit 7 and heating is performed in two heating coils 31b and 31c of the center.
  • the high-frequency current is not supplied to remaining heating coils 31a and 31d.
  • heating target object 1 When heating target object 1 is placed on two heating coils 31a and 31b of the left side in first heating area 11, the connection of heating coil is switched by switching unit 7 and heating is performed by two heating coils 31a and 31b of the left side in the same manner.
  • heating target object 1c when heating target object 1c is placed across all four (31a to 31d) of four oval heating coils 31 in a line and the user operates operation display 8 to start heating, heating is performed by all of four heating coils 31a to 31d.
  • heating target object 1c when heating target object 1c is placed across right three (31b to 31d) of four oval heating coils 31 in a line and operation display 8 is operated to heat, heating is performed by right three heating coils 31b to 31d.
  • the connection of heating coil 31 is switched in the same manner.
  • heating target object 1c is placed on one heating coil 31 among four oval heating coils 31a to 31d in a line and the user operates operation display 8 to start heating, heating is performed by only one heating coil 31.
  • An induction heating cooker built and used in a cabinet of a kitchen or the like has limitations on sizes of an equipment body and a top plate to be provided.
  • the connection of heating coil 31 is switched by switching unit 7 in the induction heating cooker of EMBODIMENT 3, it is possible to freely select a position on which heating target object 1c is placed and to effectively utilize a limited space of top plate 2.
  • heating target object 1c can be heated even if the position of heating target object 1c is changed within first heating area 11, it is possible to improve usability of the user and to effectively utilize the limited space of top plate 2.
  • inverter circuit 4 corresponding to heating coil 31 operated is driven at same frequency in the same manner as EMBODIMENT 2.
  • the driving frequency of inverter circuit 4 corresponding to each of heating coils 31 and 32 is determined according to distance X between heating coil 31 group operated in first heating area 11 and heating coil 32 operated in the second heating area in the same manner as EMBODIMENT 1 or EMBODIMENT 2.
  • the driving frequency in a case where the conduction period of time of switching element 20 of inverter circuit 4 becomes longer, is decreased.
  • inverter circuit 4 is respectively driven at the same frequency without changing the driving frequency.
  • distance X is a distance between nearest positions between an outer periphery of nearest heating coil 31d from operated heating coil 32 (32b) in operated heating coil 31 group (31c and 31d) and an outer periphery of heating coil 32b.
  • EMBODIMENT 3 By the configuration of EMBODIMENT 3, it is possible to suppress the pot noise which is caused by a difference between the driving frequencies of inverter circuits 4 corresponding to the plurality of heating coils.
  • a plan view of the induction heating cooker according to EMBODIMENT 4 is the same as that in the induction heating cooker according to EMBODIMENT 3 in FIG. 4 .
  • second heating area 12 is provided at least on the right or left of first heating area 11. That is, the plurality of heating areas are disposed in the right-left direction in a line in front of the induction heating cooker.
  • FIG. 4 illustrates an example in which second heating areas 12a and 12b are provided on both side of first heating area 11.
  • the present disclosure can provide the induction heating cooker which can suppress the pot noise which is caused by a difference between the driving frequencies of the inverter circuits corresponding to the plurality of heating coils while reducing a concern that the user hears the sound of the driving frequency of the inverter circuit. Accordingly, the induction heating cooker can be widely used for cookers or the like used in kitchens for general households or kitchens for business.

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

Claims (4)

  1. Appareil de cuisson à chauffage par induction comprenant :
    une plaque supérieure (2) dans laquelle un objet cible de chauffage (1) est placé;
    une pluralité de bobines chauffantes (3) qui sont disposées sous la plaque supérieure (2) et chauffent l'objet chauffant cible (1) ;
    un circuit inverseur (4) qui est disposé en correspondance avec chacune de la pluralité de bobines chauffantes (3) et fournit un courant de haute fréquence à chacune des bobines chauffantes (3) ;
    un dispositif de commande (5) qui commande une opération du circuit inverseur (4) ; et
    un affichage d'opération (8) qui est actionné par un utilisateur,
    le circuit inverseur (4) comprenant une unité de commutation (7) qui commute le courant d'un circuit de résonance,
    le dispositif de commande (5) comprenant un détecteur de temps de conduction (6) qui détecte une période de temps de conduction de l'unité de commutation (7), et
    caractérisé en ce que :
    le dispositif de commande (5) est conçu pour,
    au cas où une première bobine chauffante (3a) et une deuxième bobine chauffante (3b) parmi la pluralité de bobines chauffantes (3) sont actionnées simultanément, et une distance entre la première bobine chauffante (3a) et la deuxième bobine chauffante (3b) est égale ou supérieure à une première distance prédéterminée,
    i) au cas où les périodes de temps de conduction des unités de commutation (7) d'un premier circuit inverseur (4a) correspondant à la première bobine chauffante (3a) et d'un deuxième circuit inverseur (4b) correspondant à la deuxième bobine chauffante (3b) sont égales ou inférieures à une valeur prédéterminée,
    faire en sorte que des fréquences d'excitation du premier circuit inverseur (4a) et du deuxième circuit inverseur (4b) constituent une fréquence d'excitation prédéterminée ;
    ii) au cas où la période de temps de conduction de l'unité de commutation (7) est plus longue que la valeur prédéterminée,
    faire en sorte que la fréquence d'excitation du premier circuit inverseur (4a) ou du deuxième circuit inverseur (4b) qui a été détectée comme présentant la période de temps de conduction plus longue que la valeur prédéterminée soit plus courte que la fréquence d'excitation prédéterminée ; et
    chauffer par induction l'objet chauffant cible (1) par la première bobine chauffante (3a) et la deuxième bobine chauffante (3b).
  2. Appareil de cuisson à chauffage par induction selon la revendication 1,
    dans lequel, au cas où la distance entre la première bobine chauffante (3a) et la deuxième bobine chauffante (3b) est inférieure à la première distance prédéterminée, le dispositif de commande (5) est conçu pour entraîner le premier circuit inverseur (4a) et le deuxième circuit inverseur (4b) à la même fréquence.
  3. Appareil de cuisson à chauffage par induction selon la revendication 1 ou 2,
    dans lequel la plaque supérieure (2) comprend une première zone de chauffage (11) et une deuxième zone de chauffage (12) sur laquelle l'objet chauffant cible (1) est placé,
    dans la première zone de chauffage (11), au moins trois de la pluralité de bobines chauffantes (3) sont agencées en parallèle dans une direction avant-arrière ou une direction droite-gauche de l'appareil de cuisson à chauffage par induction et la bobine chauffante (3) actionnée est commutée en fonction de l'objet chauffant cible (1),
    la deuxième zone de chauffage (12) est formée pour présenter une bobine chauffante (3) présentant un diamètre supérieur à un diamètre ou un axe mineur de la pluralité des bobines chauffantes (3) constituant la première zone de chauffage (11), et
    le dispositif de commande (5) est conçu pour,
    au cas où la pluralité de bobines chauffantes (3) de la première zone de chauffage (11) sont actionnées simultanément, entraîner respectivement les circuits inverseurs (4) correspondant aux bobines chauffantes (3) à la même fréquence, et
    au cas où une pluralité des objets chauffants cibles (1) sont chauffés simultanément dans la première zone de chauffage (11) et la deuxième zone de chauffage (12), déterminer les fréquences d'excitation des circuits inverseurs (4) correspondant respectivement aux bobines chauffantes (3) en fonction de la distance entre les bobines chauffantes (3) de la première zone de chauffage (11) et la bobine chauffante (3) de la deuxième zone de chauffage (12), et chauffer par induction les objets chauffants cibles (1) par les bobines chauffantes (3) de la première zone de chauffage (11) et la bobine chauffante (3) de la deuxième zone de chauffage (12).
  4. Appareil de cuisson à chauffage par induction selon la revendication 3,
    dans lequel la deuxième zone de chauffage (12) est disposée au moins à droite ou à gauche de la première zone de chauffage (11).
EP17156479.2A 2016-04-25 2017-02-16 Appareil de cuisson à chauffage par induction Active EP3240361B1 (fr)

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JP2016086786A JP6827163B2 (ja) 2016-04-25 2016-04-25 誘導加熱調理器

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EP3240361B1 true EP3240361B1 (fr) 2018-12-05

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CN113382491B (zh) * 2020-03-10 2023-08-15 松下家电(中国)有限公司 电磁加热设备的控制方法
WO2023211910A1 (fr) * 2022-04-28 2023-11-02 Electrolux Appliances Aktiebolag Plaque de cuisson à induction comprenant trois bobines d'induction
WO2024039015A1 (fr) * 2022-08-17 2024-02-22 삼성전자주식회사 Appareil de chauffage par induction et son procédé de commande

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JPH05347180A (ja) * 1992-06-16 1993-12-27 Matsushita Electric Ind Co Ltd 電磁誘導加熱調理器
JP4325446B2 (ja) 2004-03-18 2009-09-02 パナソニック株式会社 誘導加熱装置
JP2011103225A (ja) * 2009-11-11 2011-05-26 Panasonic Corp 誘導加熱装置
PL2506664T3 (pl) * 2011-03-28 2016-08-31 Bsh Hausgeraete Gmbh Urządzenie sprzętu do gotowania
JP5938718B2 (ja) * 2011-12-26 2016-06-22 パナソニックＩｐマネジメント株式会社 誘導加熱調理器とその制御方法
EP2846607B1 (fr) * 2013-09-05 2016-05-18 Electrolux Appliances Aktiebolag Table de cuisson par induction comprenant une zone de cuisson avec trois ou plusieurs bobines d'induction et procédé permettant de commander une zone de cuisson
JP5734390B2 (ja) * 2013-10-29 2015-06-17 三菱電機株式会社 誘導加熱調理器

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JP2017199460A (ja) 2017-11-02
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