EP1361780B1 - Induktionskochmodul und Steuerungsverfahren des Moduls - Google Patents

Induktionskochmodul und Steuerungsverfahren des Moduls Download PDF

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Publication number
EP1361780B1
EP1361780B1 EP03291077A EP03291077A EP1361780B1 EP 1361780 B1 EP1361780 B1 EP 1361780B1 EP 03291077 A EP03291077 A EP 03291077A EP 03291077 A EP03291077 A EP 03291077A EP 1361780 B1 EP1361780 B1 EP 1361780B1
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EP
European Patent Office
Prior art keywords
arms
ind1
hot plate
inductors
inductor
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.)
Expired - Lifetime
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EP03291077A
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English (en)
French (fr)
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EP1361780A1 (de
Inventor
Didier Montloup
François Forest
Jean-Yves Gaspard
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.)
Agtech
Elka
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Agtech
Elka
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Priority claimed from FR0205698A external-priority patent/FR2839604A1/fr
Application filed by Agtech, Elka filed Critical Agtech
Publication of EP1361780A1 publication Critical patent/EP1361780A1/de
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Publication of EP1361780B1 publication Critical patent/EP1361780B1/de
Anticipated expiration legal-status Critical
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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
    • 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
    • H05B6/04—Sources of current

Definitions

  • the present invention relates to an electric induction cooking module as defined in the preamble of the first claim.
  • the invention also relates to a method for controlling such a module.
  • Multi-fireplace induction cooking systems (2 or 4) in the consumer market use, for the most part, the architecture of Figure 1A.
  • the elementary module consists of two inductors I1, I2 and two generators G1, G2, each of these generators supplying an inductor and one.
  • two modules are used.
  • the undeniably most suitable electronic generator for the application is the resonant inverter G of Figure 1B.
  • the resonance is introduced by associating with the inductor, of naturally inductive nature, capacitors C1 and C2, typically of a few hundred nF, to achieve a nominal operating frequency of about twenty kHz, with the following technologies: Current inducers say "pancake".
  • the power supplied to the inductor is adjusted by varying the control frequency of the inverter.
  • Figure 2 shows in the top line the voltage applied to the generator G1 and in the bottom line the voltage applied to the generator G2.
  • the object of the present invention is to develop an induction electric cooking module of the corresponding type above, making it possible to better use the electronics and, above all, to be able to dispose of one or the other of the two foci in the case in question. of a module with two homes, the maximum power available.
  • the mounting of the cooking module according to the invention is perfectly symmetrical to a double title first at each level. home and between the two homes. This makes it possible on the one hand to produce totally identical and interchangeable circuits and, on the other hand, it reduces the power of the two electronic switches associated with each inverter arm. At the industrial level, this translates into considerable savings both in the cost of components and in manufacturing and storage. Even so, every household can operate at maximum power.
  • the switching means of the two coils of the same inductor are controlled in the same way, the coils (and their resonance capacitors) of a focus being connected directly to one of the terminals of the power supply and the coils (and their resonance capacitors) of the other furnace being bridged between the two arms of the same generator.
  • the two arms of the same generator are controlled in phase or in phase opposition.
  • the switching means is provided with a passage resistance.
  • each electronic switch is provided with an antiparallel diode and a capacitor for switching assistance.
  • the switching means are controlled in the same way, the two coils associated with their resonance capacitor of a focus being each connected directly to one of the two terminals of the power supply and the two associated coils to their resonance capacitor of the other focus being connected in series between the two arms (bridge state).
  • the two arms of the same generator are controlled at the same frequency in phase or in phase opposition.
  • the adjustment of the power of the hearth in the direct state is carried out by the adjustment of the switching frequency and the setting of the hearth in the bridge state is effected by the adjustment of the respective durations of the controls in phase or in opposition of phase.
  • the fully inactive state of one focus is achieved by placing it in the bridge state and continuously maintaining control in phase.
  • the inductors of a home can be constituted by 2n coils.
  • the inductor (I1, I2) of the cooking module is divided into two independent windings of which one IND1 is shown.
  • This winding IND1 is connected by a terminal to the electronic switches T1 and T2 of one of the two arms which receive the control signals S1 and S2.
  • These electronic switches comprise in parallel a capacitor and a diode unreferenced.
  • the other terminal of the winding is connected in series with the resonance capacitor C1.
  • the assembly Downstream of the capacitor C1, the assembly comprises a switch RL1 which, in position P1, directly connects the assembly consisting of the coil IND1 and the resonance capacitor C1 to one of the terminals of the supply; in P2 position it connects the same set to the peer P2 output of the switch of the other winding associated with the same household. It is then a bridge mounting and the operation of this assembly depends on the difference of the voltages delivered by each of the two arms of the generator.
  • each inductor (Ii) is formed of two independent windings (INDi, INDi ') and each generator is formed of two arms (Bi, Bi + 1).
  • the arms Bi are each formed of two electronic switches (T1i, T2i) connected in series between the two supply terminals (L1, L2) of the network and the junction point (Ai) of the two electronic switches is a connected branch point. to a winding (IND1) and (IND2) (respectively IND1 'and IND2') of each of the two inductors (I1, I2).
  • the switching means (Rli) of the two inductors (I1, I2) are coupled so as not to assume the same state at the same time.
  • Figure 4 shows the first case of direct connection of the IND winding 1 which can then receive all the available power.
  • FIG. 5 shows the case of the bridge connection of two inverter arms B1 and B2, associated with the two windings IND1, IND1 'of the same inductor I1 and their resonance capacitor.
  • the timing diagram of FIG. 6 represents the control of the voltages VA, VB, either in phase or in phase opposition, which mainly concerns the operation of the inductor mounted in a bridge.
  • the terminals of the assembly consisting of the two windings and the two bridge-connected resonance capacitors receive the same voltages VA and VB so that the difference of these two voltages applied to the set is zero and that there is no current flowing through it.
  • the windings IND1, IND1 'then provide no energy to the container
  • the difference of the two voltages applied to the set is an alternating voltage to the frequency of the control signal S (typically 10kHz) and the windings IND1 and IND1 'can supply energy to the container
  • the principle described above can be generalized to the division of the inductor of a focus into 2n independent coils.
  • the command then makes it possible to obtain the various desired modes of operation.
  • master and slave The master inductor-generator set is the one on which the user requests the highest power. It is placed in the configuration where the two parts are powered independently (inductor 1 in Figure 7).
  • the control of the two arms then operates as follows: the frequency of the control signals Si is the same (synchronous control) for the two arms and it is adjusted according to the desired power on the master inductor.
  • the two arms can be controlled either in phase or in phase opposition ( Figure 6), at the scale of the switching frequency ( ⁇ 20kHz).
  • the power supplied to the master inductor is independent of the phase mode or in phase opposition mode, each coil being supplied independently by an arm (voltages VA and VB).
  • the slave inductor In the case of the slave inductor, its two windings in series with the resonance capacitors are powered by the bridge consisting of the two arms, therefore by the voltage VA - VB. In phase opposition, this voltage will be a slot of amplitude equal to the DC supply voltage of the arms and frequency equal to the frequency imposed by the master. In phase, the voltage VA - VB will be zero. It is then enough to alternate, over some periods of the alternative network, the mode in phase and the mode in opposition of phase to regulate the power on the inductor slave. At the limit, if we want to completely stop it, we keep the mode permanently in phase.
  • the power on the master inductor is regulated by the switching frequency of the inverter arms, the power on the slave inductor by the choice of the number of network periods on which the mode in opposition of phase is allowed.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Inverter Devices (AREA)
  • Cookers (AREA)
  • Control Of High-Frequency Heating Circuits (AREA)
  • Induction Heating Cooking Devices (AREA)

Claims (8)

  1. Modul zum elektrischen Kochen mit Induktion mit zwei Induktoren, die über einen Generator (Wechselrichter) gespeist werden, der die gleichgerichtete Spannung des Stromversorgungsnetzes empfängt und der von zwei Zweigen gebildet ist, die jeweils von zwei zwischen zwei Versorgungsanschlüssen des Netzes in Reihe geschalteten elektronischen Schaltern gebildet sind, und einem Resonanzkondensator, der jeder Wicklung zugeordnet und in Reihe geschaltet ist,
    dadurch gekennzeichnet, dass
    - jeder Induktor von zwei unabhängigen Wicklungen (IND1, IND1') und (IND2, IND2') gebildet ist,
    - jeder Generator von zwei Zweigen (B1, B2) gebildet ist,
    Figure imgb0001
    die Verbindungsstelle (Ai) der zwei elektronischen Schalter eine Zweigstelle ist, die mit einer Wicklung (IND1) und (IND2) (bzw. IND1' und IND2') eines jeden der beiden Induktoren verbunden ist,
    Figure imgb0002
    der jeder Wicklung (IND1) zugeordnete Resonanzkondensator (Ci) in Reihe geschaltet ist, wodurch eine Einheit gebildet wird, wovon
    • einer der beiden Anschlüsse an einen der Zweige (Bi) angeschlossen ist und
    • der andere Anschluss an ein Umschaltmittel (Rli) angeschlossen ist, um direkt mit einem der Anschlüsse der Versorgung (Direktzustand) oder mit dem homologen Anschluss der anderen Einheit des gleichen Induktors (Brückenzustand) verbunden zu werden,
    • die Umschaltmittel (Rli) der beiden Induktoren gekoppelt sind, um nicht gleichzeitig den gleichen Zustand einzunehmen.
  2. Modul zum elektrischen Kochen nach Anspruch 1, dadurch gekennzeichnet, dass das Umschaltmittel (Rli) mit einem Durchgangswiderstand ausgestattet ist.
  3. Modul zum elektrischen Kochen nach Anspruch 1, dadurch gekennzeichnet, dass jeder elektronische Schalter (T1i, T2i) mit einer Antiparalleldiode und mit einem Umschalthilfe-Kondensator ausgestattet ist.
  4. Modul zum elektrischen Kochen nach Anspruch 1, dadurch gekennzeichnet, dass die Umschaltmittel (RL1, RL1' bzw. RL2, RL2') auf die gleiche Art und Weise gesteuert werden, wobei die zwei ihrem Resonanzkondensator zugeordneten Wicklungen einer Kochzone jeweils direkt mit einem der beiden Anschlüsse der Versorgung verbunden sind und die zwei ihrem Resonanzkondensator zugeordneten Wicklungen der anderen Kochzone zwischen den beiden Zweigen in Reihe geschaltet sind (Brückenzustand).
  5. Modul zum elektrischen Kochen nach Anspruch 1, dadurch gekennzeichnet, dass die beiden Zweige (Bi) eines gleichen Generators mit der gleichen Frequenz gleichphasig oder gegenphasig gesteuert werden.
  6. Modul zum elektrischen Kochen nach Anspruch 1, dadurch gekennzeichnet, dass die Einstellung der Leistung der Kochzone im Direktzustand über die Einstellung der Schaltfrequenz und die Einstellung der Kochzone im Brückenzustand über die Einstellung der jeweiligen Zeiten der gleichphasigen oder gegenphasigen Steuerung erfolgt.
  7. Modul zum elektrischen Kochen nach Anspruch 1, dadurch gekennzeichnet, dass der vollkommen inaktive Zustand einer Kochzone, wobei die andere in Betrieb ist, dadurch realisiert wird, dass sie in den Brückenzustand versetzt und permanent die gleichphasige Steuerung aufrechterhalten wird.
  8. Modul zum elektrischen Kochen nach Anspruch 1, dadurch gekennzeichnet, dass die Induktoren der Kochzone von 2n Wicklungen gebildet sind.
EP03291077A 2002-05-07 2003-05-05 Induktionskochmodul und Steuerungsverfahren des Moduls Expired - Lifetime EP1361780B1 (de)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
FR0205698A FR2839604A1 (fr) 2002-05-07 2002-05-07 Module de cuisson electrique a induction et procede de commande du module
FR0205698 2002-05-07
FR0305408 2003-05-02
FR0305408A FR2839605B1 (fr) 2002-05-07 2003-05-02 Module de cuisson electrique a induction et procede de commande du module

Publications (2)

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EP1361780A1 EP1361780A1 (de) 2003-11-12
EP1361780B1 true EP1361780B1 (de) 2006-01-25

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AT (1) ATE316749T1 (de)
DE (1) DE60303350T2 (de)
ES (1) ES2257649T3 (de)
FR (1) FR2839605B1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102960054A (zh) * 2010-06-28 2013-03-06 Bsh博世和西门子家用电器有限公司 炉灶装置

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004010331B4 (de) * 2004-02-25 2014-03-20 Newfrey Llc Verfahren und Vorrichtung zum Erzeugen eines elektrischen Heizstroms, insbesondere zum induktiven Erwärmen eines Werkstücks
EP1951003B2 (de) † 2007-01-23 2022-11-16 Whirlpool Corporation Verfahren zur Regelung eines Induktionskochfeldes und zur Ausführung dieses Verfahrens adaptiertes Induktionskochfeld
KR20090057495A (ko) * 2007-12-03 2009-06-08 삼성전자주식회사 유도가열조리기 및 그 제어방법
ES2353890B1 (es) 2008-12-19 2012-01-26 Bsh Electrodomesticos España, S.A. Campo de cocción con al menos tres zonas de calentamiento.
ES2384919B1 (es) * 2009-12-28 2013-05-20 Bsh Electrodomésticos España, S.A. Dispositivo de aparato de cocción.
ES2385807B1 (es) * 2010-03-16 2013-06-17 BSH Electrodomésticos España S.A. Dispositivo de encimera de cocción.
EP2506669B2 (de) 2011-03-29 2023-10-11 BSH Hausgeräte GmbH Schaltungsvorrichtung
RU2567853C2 (ru) * 2011-03-30 2015-11-10 Бсх Хаусгерете Гмбх Индукционное нагревательное устройство
EP2704524A1 (de) * 2012-08-28 2014-03-05 AEG Power Solutions GmbH Vorrichtung zum Erwärmen mittels elektromagnetischer Induktion, insbesondere Induktionsheizung oder Induktionsofen
ES2673693B1 (es) 2016-12-23 2019-04-09 Bsh Electrodomesticos Espana Sa Horno de coccion y procedimiento para el funcionamiento de un horno de coccion

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0612699B2 (ja) * 1985-11-27 1994-02-16 株式会社東芝 誘導加熱調理器
CH690891A5 (de) * 1996-03-07 2001-02-15 Thomann Electronics Ag Heizleistungsregulierung für Induktionskochherd.
FR2792157B1 (fr) * 1999-04-09 2001-07-27 Jaeger Regulation Table de cuisson par induction comportant des foyers a induction alimentes par des generateurs

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102960054A (zh) * 2010-06-28 2013-03-06 Bsh博世和西门子家用电器有限公司 炉灶装置
CN102960054B (zh) * 2010-06-28 2016-10-26 Bsh家用电器有限公司 炉灶装置
US10009959B2 (en) 2010-06-28 2018-06-26 BSH Hausgeräte GmbH Cooker hob device

Also Published As

Publication number Publication date
ES2257649T3 (es) 2006-08-01
DE60303350T2 (de) 2006-09-07
FR2839605B1 (fr) 2004-09-10
DE60303350D1 (de) 2006-04-13
ATE316749T1 (de) 2006-02-15
FR2839605A1 (fr) 2003-11-14
EP1361780A1 (de) 2003-11-12

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