EP0986287A2 - Circuit de commutation à deux sorties, son circuit électrique et son procédé de commande de la puissance fournie aux sorties du circuit de commutation - Google Patents

Circuit de commutation à deux sorties, son circuit électrique et son procédé de commande de la puissance fournie aux sorties du circuit de commutation Download PDF

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Publication number
EP0986287A2
EP0986287A2 EP99117713A EP99117713A EP0986287A2 EP 0986287 A2 EP0986287 A2 EP 0986287A2 EP 99117713 A EP99117713 A EP 99117713A EP 99117713 A EP99117713 A EP 99117713A EP 0986287 A2 EP0986287 A2 EP 0986287A2
Authority
EP
European Patent Office
Prior art keywords
power
control
current
coil
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.)
Withdrawn
Application number
EP99117713A
Other languages
German (de)
English (en)
Other versions
EP0986287A3 (fr
Inventor
Jose Ramon Garcia Jimenez
Jose Andres Garcia Martinez
Jose Miguel Burdio Pinilla
Abelardo Martinez Iturbe
Fernando Monterde Aznar
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 Balay SA
Original Assignee
Balay SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Balay SA filed Critical Balay SA
Publication of EP0986287A2 publication Critical patent/EP0986287A2/fr
Publication of EP0986287A3 publication Critical patent/EP0986287A3/fr
Withdrawn legal-status Critical Current

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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
    • 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 that concerns us here consists of a reversing circuit with two outputs of the type consisting of a three-phase H bridge in which Power semiconductors are included, controlled by a control circuit are to regulate the power fed into it outputs, and in the it also includes two switches, the actuation of which is the topology changed to one of the charges or the two charges simultaneously supply; and which has the task of the control circuit, the state of the Power semiconductors control to the power fed into the charges control, improve, these are preferably coils as in Induction kitchens can be used.
  • One of the improvements of the Control circuit is to determine the time at which the container withdrawn from the spool in a quick and effective manner to the Interrupt the operation of the reversing switch, and all of this without any additional costs.
  • Another object of the invention is to oversize the Avoid changeover switches and power semiconductors and increase their lifespan increase; for which the electricity is distributed among them.
  • control circuit of the invention has the task of application to enable a method of control to control the Power supply to the coils optimized.
  • Another object of the invention is the switching of the To synchronize power semiconductors with the implementation of the voltage by 0, which is also expressed in a longer lifespan.
  • the method of the invention also reduces the number of Changes in the state of the switches, and the changes take place, by reducing the power to the minimum so that the operation of the Reverse switch, and as a result, the performance increases progressively, so that this also affects the preservation of a longer life the changeover switch and thus the reversing circuit.
  • the invention is in the field of Induction kitchens applicable, but they can also be used in any other area can be applied in which the power fed into two charges with the help an inverter circuit must be controlled.
  • induction kitchens is known from the prior art, whose coils are supplied with the help of a reversing circuit which consists of a non-symmetrical bridge consists of three-phase H, which has a common Branch and two independent branches in which Power semiconductor elements were provided, the activation of one Control circuit is regulated to the power fed into the coils regulate, and which also includes shading elements to select which Coil or coils are supplied with the power.
  • the heating of a ferromagnetic container over the flat winding an induction coil is attached by the action of the induced currents and the magnetic hysteresis generated by the periodic change of the Magnetic field generated by the induction coil.
  • control circuits that control the power provided by the inverter circuit is fed are connected to an external control, the signals or Generates instructions that refer to the performance provided by the user for each of the coils has been selected so that the control circuit is the fed Regulates power by controlling the pulse width that is sent to the power semiconductors is laid out in the three branches of the non-symmetrical bridge three-phase H of the reversing circuit are provided.
  • the control circuit also controls the state of the changeover switch of the Inversion circuit to change its topology and allow it to one of the loads is supplied independently or both loads at the same time be supplied.
  • the reversing circuits have the disadvantage that the current in the Locked state flowing through the power semiconductor elements is increased, causing this are heated more and have a shorter lifespan.
  • a single coil If a single coil is supplied, it can over-speed with the help of a Heating are supplied, for which a power is applied that is higher than is the nominal benefit.
  • This mode of operation causes the current flowing through the Switches and flows through the power semiconductors, which is oversized this and a reduction in their lifespan.
  • control circuits used include circuits for determination the time the container is withdrawn from the spool by the Abolish regulation of the benefit from this point in time. These circuits can be improved to get better reliability in getting this To achieve function.
  • the invention provides one new circuit and a new procedure to control the in the outputs of the Reverse switch fed power available, which in turn was improved.
  • the two output inversion circuit of the invention comprises a bridge non-symmetrical three-phase H, which is a common and two mutually independent branches is determined in which power semiconductor elements are included to increase the power fed into the output regulate, and which also includes two switches, the operation of which Changing the topology of the reversing switch causes one of the charges independently or to supply the two loads at the same time; and he is through it characterized in that between each cargo and the common branch means are available to compensate for the inductive nature of the charge, so that the heating of the power semiconductors is reduced, resulting in a longer Lifetime of the same is achieved.
  • the means for compensating the inductive character are advantageously the Charge of capacitors determined.
  • the reversing switch is characterized in that it comprises means to get a sample of the current flowing through each coil to connect to the To establish a control circuit, these means being determined by transformers, the first of which is connected in series with the charge, and the second of which is on the control circuit is created as will be described below.
  • the control circuit also includes means to monitor the state of the changeover switch Reverse switch and change its topology so that it it is possible to supply a load independently if one of the loads Power required, or to supply both loads at the same time if this require performance at the same time.
  • These means only operate the changeover switches when there is a change in configuration, i.e. if any cargo is activated or deactivated, so that their operation is very limited, what resulting in a longer lifespan, causing reliability problems be cleared out.
  • the control cycle includes means that enable the Power semiconductor devices and the switch to share when a single Charge is fed, which also has a longer lifespan Results in power semiconductors
  • the control circuit of the invention also includes means for generating Current references based on the generation of a voltage per charge, which receive the instruction signals and generate a reference to the selected one Performance is proportional; it also includes means for comparing the Current reference with the current flowing through the coil, i.e. one per spool in order to generate a pulse, the duration of which is equal to the time during which the current through the coil is higher than the reference current
  • the duration of the impulses represents that Control circuit provides the information necessary to make the decision meet whether the pulse width that is applied to the power semiconductors is reduced, should be maintained or increased.
  • the means for generating current references convert the power signals into DC voltage levels around.
  • the voltage levels are in the Comparative means compared with the voltage, which is related to the current of the coil the resistance of the charge of the current transformer is obtained, is proportional.
  • the means that control the state of the changeover switches and the means for generating of current references of the control circuit of the invention are with a communication interface connected via which the connection with the external Control is performed to receive the instruction signals and the Send the operating status of the control circuit to the external control.
  • the control circuit of the invention advantageously comprises a detector which Carrying out the voltage of the network by 0 so that any change in the Pulse width of the power semiconductors or each activation of the switch with the Implementation of the voltage is synchronized by 0, so that the operation of the Power semiconductors and the changeover switch, and thus the reversing circuit is maintained.
  • control circuit of the invention means includes the duration of the pulses applied during a half period of the network the control of the pulse width of the power semiconductors are created, add up so that short-term faults can be filtered and the effect of the distortion of the network in the power fed in is minimized.
  • Another feature of the control circuit of the invention relates to the means for Detection of the withdrawal of the container from the coils by a comparator be determined for each coil using the current flowing through the coil 0 compares and is associated with means of measuring the time that passes since the power semiconductors are switched over by a voltage half cycle to generate that is applied to each coil to increase the power across them control so that if this time is shorter than an experimentally predetermined one Value is the presence of the container above the spool is determined; so that, if this value is exceeded, it is determined that the container has been withdrawn, the inverter circuit deactivating until it goes from is activated to check the absence of the container.
  • the process repeats itself for a short period of time until the container is proven or until the end of the performance requirement for this load.
  • a minimum requirement performance set the limit power is called, so that if a power below the Limit power is required, the supply up to the value of the limit power short periods of time is carried out to the required performance, which is less than the limit power is to be provided, using this process as a control the operating circuit or energy control is known.
  • the power devices are according to a current control the deletion of the single-pole voltage operated at constant frequency.
  • the deletion time is zero and thus the performance is maximum if the Current reference is not reached, for a current control of the voltage inversion transitioned at variable frequency which enables the operating frequency decrease and in this way increase performance.
  • the Power semiconductor devices In the event that a single coil requires a power that is less than or equal to the nominal power and greater than or equal to the limit power, the Power semiconductor devices according to a current control of the extinction of the single-pole voltage at constant frequency as in the previous case activated, but with the difference that the frequency used is higher because the Power is less Likewise in this case, if the deletion time is zero and therefore the power is at a maximum if the current reference is not reached Current control of the voltage inversion with variable frequency passed, which makes it possible to reduce the operating frequency and to this Way to increase performance.
  • the Power semiconductor devices according to a current control of the extinction of the single-pole voltage at constant frequency activated for the two charges, the frequency is identical for both charges.
  • the reference current for the charge becomes a current control of the voltage inversion at a variable frequency passed, which allowed to reduce the operating frequency and to this Way to increase the performance in the cargo.
  • the Current control with the help of the control of the deletion of the single-pole voltage maintained, but at the same frequency as in the first coil, which is why the frequency of the switchover is identical, as explained above.
  • the method of the invention states that the level of limit performance is the level below which control the deletion of the voltage is not is able to reduce the performance, even if the maximum voltage the voltage in the coil is not zero this Performance level is approximately a quarter of the nominal performance.
  • Table 1 shows the position of R1 and R2 as a function of that for B1 and B2 selected performance.
  • the inverter circuit of the invention comprises a common branch and two mutually independent branches, each of which two power semiconductors S1-S6 contains, with S2, S4 and S6 the higher power semiconductors and S1, S3 and S5 represent the lower power semiconductors.
  • the power semiconductors are determined by transistors between their transmitters and a diode has been attached to a path for the current collector to provide the cut of the transistors, since the charge is an inductive Character has (switching frequency greater than resonance frequency).
  • the coils B1 and B2 connected, each between the common branch and one of the independent branches is arranged
  • the capacitors C1 and C2 go into series attached, as well as the first of the transformers T1 and T2.
  • the reversing switch includes the switches R1 and R2, which are switched by a Control circuit ( Figure 2) can be controlled to only one of the coils or to supply both coils at the same time.
  • a DC voltage Ve is applied to the input of the reversing switch is obtained by rectifying the voltage of the network, which with the help the activation of the transistors in a control circuit AC voltage is converted to the power applied to the coils feed and control.
  • the transformers T1 and T2 are means for taking a sample of the current get that flows through each coil.
  • Capacitors C1 and C2 are used to compensate for the inductive type receive the charge, which reduce the current in the section of the transistors, thereby these are heated less.
  • the control circuit that controls the power that was fed into the coils is shown in Figure 2 and includes an interface 2, the Connection means of the control circuit with an external controller 1 represents.
  • the external controller is a block that generates the signals or instructions that point out the condition of the controls over which the User controls the operation of the coils.
  • the external control receives the via interface 2 Operating state of the reversing switch as described below becomes.
  • the signals or instructions are applied to a generator of current references 3 applied, which provides the signals DC1 and DC2 to the Instructions provided by the external controller 1 are proportional are.
  • a circuit is included in the controller 3, which the operation of the Switch R1 and R2 of the reversing circuit (Table 1) controls so that this can only be activated when a coil B1 and / or B2 is activated or is deactivated.
  • the signals DC1 and DC2 have a constant frequency and a variable one Pulse width and are connected to an analog circuit 4, 4 'for converting the Pulses into a rectified reference voltage, which is called intensity references I1 and I2 are used.
  • the intensity references I1 and I2 are applied to comparators 5 and 5 ', in their non-inversion input the second of the transformers T1 and T2 see above is connected that a renewed supply of current IB1 or IB2 by the coil B1 or B2 flows, which is generated with those of the reference I1 and I2 is compared, which is why every time the current IB1 or IB2 is the reference exceeds, a pulse P1, P2 is generated, the width of which is greater, the longer is the period during which the reference is exceeded.
  • the pulses P1 and P2 are applied to a control circuit of pulse width 7 created that controls the activation of the power semiconductor S1-S6.
  • the activation of the power semiconductors represents the peculiarity that when a only coil B1 or B2 is supplied, the power semiconductors S1-S6 and Switch R1-R2 are divided, i.e. all work so that they keep the currents under split up.
  • control circuit 7 includes an integrator, which is within a Half period of the network the pulses P1 and P2 are added together to the time during which the reference power is exceeded, and so on ensure that the heating is done correctly.
  • a Detector 8 provided the implementation of the voltage of the network through 0 of it also allows the conversion of power semiconductors S1-S6 and Execute changeover switches R1 and R2 when the voltage is 0.
  • the second of the transformers T1 and T2 are also connected to the Comparators 6 and 6 'connected, the inversion input of which is connected to the OV, so that the level of the voltage 0 is compared with the voltage in the Resistors connected to the output of the transformers for All of this is provided to determine if a container is above the spool is present or not, as will be shown below.
  • any change in pulse width or Activation of the changeover switch synchronized using the signal from the detector 8 the implementation of the voltage of the network is made available by zero.
  • control circuit mentioned works according to the procedure that follows is described.
  • the toggle switches R1 and / or R2 acts on the toggle switches R1 and / or R2 to determine whether one only load and which of them is supplied, or whether both loads be supplied simultaneously, all based on the instructions given by the external controller 1 can be made available.
  • the References I1 and I2 are generated, which are proportional to the selected power, and they are compared with the current of the coils IB1, IB2, the pulses P1 and To generate P2, depending on which the operation of transistors S1-S6 is controlled.
  • the Power semiconductor devices S1-S6 according to a control of Quenching current with single-pole voltage activated at constant frequency, and if as in the previous case, if the deletion time is zero and therefore the Power is maximum, the reference current is not reached, becomes a control of the inversion current with voltage at variable frequency thereby making it possible to reduce the operating frequency and in this way to increase the power in the load, as shown in Figure 3.
  • the changeable frequency is smaller than in the previous case.
  • the power devices S1-S6 are checked according to a control of the Quenching current with single-pole voltage at constant frequency for both Charges activated, with the frequency being identical in both charges.
  • the extinguishing time is zero on one of the loads and therefore the power is at a maximum, becomes when the reference current for this charge is not reached a control of the inversion current with voltage at a variable frequency passed, thereby making it possible to reduce the operating frequency and in this way to increase the performance in the cargo.
  • the other cargo is the control of the current using a quenching control with single-pole voltage maintained, but at the same frequency as the first, which is why the Frequency of switching is identical, as already explained above.
  • the control is carried out in the low power semiconductors S4 and S6, so that the triggering circuits of the power devices can be easily carried out since the duty cycle of the low semiconductor devices is always equal to 0.5, which enables the technique of Bootstrap is used for the supply of the trigger circuits of the higher devices without any limitation of the minimum pulse width, as already explained above.
  • the limit power is set as the minimum line below which the Control of voltage cancellation is unable to increase performance reduce the voltage in the coil even at the maximum extinguishing time is zero.
  • a Change in inversion circuit carried out by S4 and S6 constantly are closed and S3 and S5 are kept open in this way the circuit gets a half-bridge configuration, making the maximum Power is reduced to about a quarter of the nominal power, which is the Corresponds to the limit power that is applied.
  • the method of the invention performs the following steps out:
  • the measured time is less than the predetermined time Time threshold, the presence of the container is determined, giving a signal is generated, which indicates that the container is present over the coil, and wherein control of performance according to the described method is maintained.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Inverter Devices (AREA)
  • Control Of Voltage And Current In General (AREA)
  • Control Of Electrical Variables (AREA)
  • Ac-Ac Conversion (AREA)
EP99117713A 1998-09-08 1999-09-08 Circuit de commutation à deux sorties, son circuit électrique et son procédé de commande de la puissance fournie aux sorties du circuit de commutation Withdrawn EP0986287A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ES9801895 1998-09-08
ES9801895A ES2143430B1 (es) 1998-09-08 1998-09-08 Circuito inversor de dos salidas, y circuito y procedimiento de control de la potencia entregada en las salidas del inversor.

Publications (2)

Publication Number Publication Date
EP0986287A2 true EP0986287A2 (fr) 2000-03-15
EP0986287A3 EP0986287A3 (fr) 2000-08-09

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EP99117713A Withdrawn EP0986287A3 (fr) 1998-09-08 1999-09-08 Circuit de commutation à deux sorties, son circuit électrique et son procédé de commande de la puissance fournie aux sorties du circuit de commutation

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EP (1) EP0986287A3 (fr)
ES (1) ES2143430B1 (fr)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1194011A2 (fr) * 2000-09-29 2002-04-03 BSH Balay, S.A. Circuit convertisseur et son procédé de commande
WO2011051856A1 (fr) 2009-10-26 2011-05-05 BSH Bosch und Siemens Hausgeräte GmbH Plaque de cuisson à au moins deux résistances, et dispositif électronique de puissance
WO2011055283A1 (fr) 2009-11-05 2011-05-12 BSH Bosch und Siemens Hausgeräte GmbH Table de cuisson équipée d'au moins deux inducteurs de chauffage
WO2011113660A1 (fr) * 2010-03-16 2011-09-22 BSH Bosch und Siemens Hausgeräte GmbH Dispositif de table de cuisson
EP2445306A2 (fr) 2010-10-21 2012-04-25 FagorBrandt SAS Procédé de commande en fonctionnement d'une table de cuisson à induction et table de cuisson à induction utilisant ce procédé
EP2692205A1 (fr) * 2011-03-31 2014-02-05 BSH Bosch und Siemens Hausgeräte GmbH Dispositif de chauffage par induction
EP2753147A3 (fr) * 2013-01-02 2017-01-04 LG Electronics Inc. Appareil de cuisson à induction
US9554426B2 (en) 2013-01-02 2017-01-24 Lg Electronics Inc. Induction heat cooking apparatus and method for controlling output level thereof
CN110476479A (zh) * 2017-04-14 2019-11-19 三菱电机株式会社 感应加热装置
WO2024046629A1 (fr) * 2022-08-30 2024-03-07 BSH Hausgeräte GmbH Appareil de cuisson
WO2024094654A1 (fr) * 2022-10-31 2024-05-10 Nicoventures Trading Limited Chauffage par induction

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2352772B1 (es) 2008-12-19 2012-01-26 Bsh Electrodomésticos España, S.A. Campo de cocción con varios elementos de calentamiento y al menos un grupo constructivo de la electrónica de potencia.
ES2430039B1 (es) * 2012-05-11 2014-10-02 Bsh Electrodomésticos España, S.A. Aparato de cocción con una unidad de calentamiento

Citations (4)

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Publication number Priority date Publication date Assignee Title
US4885447A (en) * 1985-01-23 1989-12-05 Balay, S.A. System for the induction heating of the electric plates of a cooker
EP0717581A1 (fr) * 1994-11-24 1996-06-19 Balay, S.A. Système de chauffage par induction
EP0844807A1 (fr) * 1996-11-21 1998-05-27 Balay S.A. Commande optimale de la puissance installée dans une foyer de cuisson par induction avec une topologie reconfigurable
WO1998032310A1 (fr) * 1997-01-20 1998-07-23 Induced Energy Ltd. Appareil de chauffage par induction

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1981000801A1 (fr) * 1979-09-17 1981-03-19 Matsushita Electric Ind Co Ltd Installation de chauffage a induction
IT1281843B1 (it) * 1995-01-25 1998-03-03 Meneghetti Ampelio & C S N C Dispositivo di controllo particolarmente per fornelli ad induzione multipiastra

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4885447A (en) * 1985-01-23 1989-12-05 Balay, S.A. System for the induction heating of the electric plates of a cooker
EP0717581A1 (fr) * 1994-11-24 1996-06-19 Balay, S.A. Système de chauffage par induction
EP0844807A1 (fr) * 1996-11-21 1998-05-27 Balay S.A. Commande optimale de la puissance installée dans une foyer de cuisson par induction avec une topologie reconfigurable
WO1998032310A1 (fr) * 1997-01-20 1998-07-23 Induced Energy Ltd. Appareil de chauffage par induction

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1194008A2 (fr) * 2000-09-29 2002-04-03 BSH Balay, S.A. Circuit convertisseur et son procédé de commande
EP1194008A3 (fr) * 2000-09-29 2005-12-28 BSH Balay, S.A. Circuit convertisseur et son procédé de commande
EP1194011A3 (fr) * 2000-09-29 2005-12-28 BSH Balay, S.A. Circuit convertisseur et son procédé de commande
EP1194011A2 (fr) * 2000-09-29 2002-04-03 BSH Balay, S.A. Circuit convertisseur et son procédé de commande
US10925122B2 (en) 2009-10-26 2021-02-16 BSH Hausgeräte GmbH Cook top comprising at least two heating elements and a power electronics arrangement
WO2011051856A1 (fr) 2009-10-26 2011-05-05 BSH Bosch und Siemens Hausgeräte GmbH Plaque de cuisson à au moins deux résistances, et dispositif électronique de puissance
WO2011055283A1 (fr) 2009-11-05 2011-05-12 BSH Bosch und Siemens Hausgeräte GmbH Table de cuisson équipée d'au moins deux inducteurs de chauffage
WO2011113660A1 (fr) * 2010-03-16 2011-09-22 BSH Bosch und Siemens Hausgeräte GmbH Dispositif de table de cuisson
EP2445306A2 (fr) 2010-10-21 2012-04-25 FagorBrandt SAS Procédé de commande en fonctionnement d'une table de cuisson à induction et table de cuisson à induction utilisant ce procédé
FR2966688A1 (fr) * 2010-10-21 2012-04-27 Fagorbrandt Sas Procede de commande en fonctionnement d'une table de cuisson a induction et table de cuisson a induction utilisant ce procede.
EP2445306A3 (fr) * 2010-10-21 2012-12-26 FagorBrandt SAS Procédé de commande en fonctionnement d'une table de cuisson à induction et table de cuisson à induction utilisant ce procédé
EP2692205A1 (fr) * 2011-03-31 2014-02-05 BSH Bosch und Siemens Hausgeräte GmbH Dispositif de chauffage par induction
US9554426B2 (en) 2013-01-02 2017-01-24 Lg Electronics Inc. Induction heat cooking apparatus and method for controlling output level thereof
US9572201B2 (en) 2013-01-02 2017-02-14 Lg Electronics Inc. Induction heat cooking apparatus and method for controlling output level thereof
EP2753147A3 (fr) * 2013-01-02 2017-01-04 LG Electronics Inc. Appareil de cuisson à induction
CN110476479A (zh) * 2017-04-14 2019-11-19 三菱电机株式会社 感应加热装置
EP3612004A4 (fr) * 2017-04-14 2020-04-15 Mitsubishi Electric Corporation Appareil de chauffage par induction
CN110476479B (zh) * 2017-04-14 2021-11-09 三菱电机株式会社 感应加热装置
WO2024046629A1 (fr) * 2022-08-30 2024-03-07 BSH Hausgeräte GmbH Appareil de cuisson
WO2024094654A1 (fr) * 2022-10-31 2024-05-10 Nicoventures Trading Limited Chauffage par induction

Also Published As

Publication number Publication date
ES2143430B1 (es) 2000-12-16
ES2143430A1 (es) 2000-05-01
EP0986287A3 (fr) 2000-08-09

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