EP2453714A1 - Dispositif de chauffage à induction - Google Patents

Dispositif de chauffage à induction Download PDF

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Publication number
EP2453714A1
EP2453714A1 EP11187090A EP11187090A EP2453714A1 EP 2453714 A1 EP2453714 A1 EP 2453714A1 EP 11187090 A EP11187090 A EP 11187090A EP 11187090 A EP11187090 A EP 11187090A EP 2453714 A1 EP2453714 A1 EP 2453714A1
Authority
EP
European Patent Office
Prior art keywords
inductor
switching
unit
inductor coil
frequency
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Withdrawn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
EP11187090A
Other languages
German (de)
English (en)
Inventor
Daniel Anton Falcon
Magdy Saoudi
Claudio Carretero Chamarro
Jose Maria De La Cuerda Ortin
Pablo Jesus Hernandez Blasco
Oscar Jimenez Navascues
Sergio Llorente Gil
Arturo Mediano Heredia
Jose Joaquin Paricio Azcona
Diego Puyal Puente
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BSH Hausgeraete GmbH
Original Assignee
BSH Bosch und Siemens Hausgeraete GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by BSH Bosch und Siemens Hausgeraete GmbH filed Critical BSH Bosch und Siemens Hausgeraete GmbH
Publication of EP2453714A1 publication Critical patent/EP2453714A1/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Withdrawn legal-status Critical Current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 is based on an induction heating device according to the preamble of claim 1.
  • Induction heaters which comprise a larger number of inductor coils than frequency units and a larger number of inductor coils than resonant units.
  • the inductor coils are fixedly connected in pairs to a resonance unit. An assignment of the inductor coils to the frequency units via a switching arrangement of the induction heater.
  • the object of the invention is in particular to provide a generic induction heater with lower requirements for a control algorithm with the same complexity of a switching arrangement.
  • the object is achieved by the features of claim 1, while advantageous embodiments and modifications of the invention can be taken from the dependent claims.
  • the invention is based on an induction heating device, in particular a cooktop induction heating device, with at least one inductor coil, a first and a second resonance unit and a switching arrangement.
  • the switching arrangement be provided for selectively assigning the inductor coil to the first or the second resonance unit.
  • provided is intended to be understood in particular specifically designed and / or equipped and / or programmed.
  • An “inductor coil” 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 inductor coil is preferably intended to supply electrical energy indirectly via induced eddy currents To convert heat.
  • a “switching arrangement” is to be understood in particular as an entirety of switching elements.
  • the switching elements are preferably relays, in particular electromechanical relays, and particularly advantageously semiconductor switches, in particular transistors and / or thyristors and / or triacs.
  • the switching arrangement to the inductor “optionally assign the first or the second resonance unit” should be understood in particular that the switching elements of the switching arrangement are arranged such that in a first switching state, a first conduction path between the inductor and the first resonance unit and in a second switching state enable a second conduction path between the inductor and the second resonance unit.
  • conductive path is intended to be understood in particular an electrically conductive conductor portion between two points, which is preferably an electrical resistivity of not more than 10- 4 ohm-m, in particular of not more than 10- 5 ohm-m, advantageously of more than 10- 6 ohm-m, and particularly advantageously of up to 10- 7 ⁇ m at 20 ° C has.
  • a "resonance unit” is to be understood in particular as meaning a unit which comprises at least one resonance capacitor, which differs in particular from a damping capacitor.
  • the resonance capacitor is in particular part of an electrical resonant circuit, in particular of an electrical series resonant circuit.
  • the resonant capacitor is in particular connected to the inductor coil, preferably via at least one switching element, and is particularly advantageously designed to be charged via the inductor coil by a frequency unit, in particular when the inductor coil is set by the switching arrangement to a higher electrical potential.
  • the resonance capacitor is arranged in particular on a side of the inductor coil facing away from the frequency unit in the direction of a line path.
  • the resonance unit comprises at most two capacitors, which are connected in particular in a half-bridge circuit between two busbars.
  • the induction heating device comprises at least one frequency unit.
  • a "frequency unit” is to be understood in particular as meaning an electrical unit which generates an oscillating electrical signal, preferably with a frequency of at least 1 kHz, in particular of at least 10 kHz and advantageously of at least 20 kHz, for the inductor coil.
  • the frequency unit comprises in particular at least one inverter, which preferably comprises two switching units.
  • a “switching unit” is to be understood as meaning, in particular, a unit which is intended to interrupt a line path comprising the switching unit.
  • the switching unit is a bidirectional unipolar switch which in particular allows a current flow through the switch along the conduction path in both directions and in particular short-circuits an electrical voltage in at least one polarity direction.
  • the inverter comprises at least two bipolar transistors with insulated gate electrode and particularly advantageously at least one damping capacitor. In this way, a high-frequency power supply of the inductor coils can be provided, whereby a heating of a ferromagnetic cooking utensil can be made possible by the inductor coils.
  • the frequency unit of the inductor coil is permanently assigned.
  • the frequency unit of the inductor coil is permanently assigned.
  • the inductor coil is operated independently of a switching state of the switching device exclusively by a specific frequency unit.
  • a “switching state of the switching arrangement” is to be understood in particular a specific combination of switch positions of the switching elements of the switching arrangement.
  • the inductor coil can be electrically connected to a further inductor coil via at least one switching element of the switching arrangement.
  • a first unit can be electrically connected to a second unit via at least one switching element of the switching arrangement, it should be understood in particular that the two units are connected via a line path in at least one switching state of the switching arrangement and that the switching element is part of the line path.
  • the further inductor coil via at least one switching element of the switching arrangement with the frequency unit is electrically connected.
  • a flexible assignment of the further inductor coil to the frequency unit can be achieved.
  • the induction heating device comprise at least one further inductor coil which is permanently assigned to one of the resonance units.
  • the further inductor coil is permanently assigned to one of the resonance units
  • the further inductor coil can be operated independently of the switching state of the switching arrangement exclusively with the specific resonance unit.
  • an inseparable conduction path exists between the further inductor coil and the resonance unit.
  • the switching arrangement is provided for optionally assigning the further inductor coil to at least one of at least two frequency units.
  • the switching arrangement is intended to "optionally allocate the further inductor coil to at least one of at least two frequency units"
  • the switching arrangement is provided for this purpose is to form a conduction path from the further inductor coil to a first frequency unit in a first operating mode, to form a conduction path from the further inductor coil to a second frequency unit in a second operating state, and preferably in a third operating mode simultaneously to a conduction path from the further inductor coil the first frequency unit and the second frequency unit.
  • the induction heating device comprises a control unit which is intended to operate at least two inductor coils in a time division multiplex method.
  • a "control unit” should in particular be understood to mean an electronic unit which is preferably at least partially integrated in a control and / or regulating unit of an induction hob and which is preferably provided to control and / or supply at least the frequency unit and the switching elements of the switching arrangement regulate.
  • the control unit 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.
  • a "time-division multiplexing" is to be understood in particular as a control method in which individual time segments are defined, which are preferably run through one after the other, periodically recurring.
  • the switching state of the switching arrangement changes, preferably in such a way that a first inductor coil is supplied with energy in the first time segment and a second inductor coil in the second time segment.
  • a power supplied to the inductors during a period of time is greater than an average time power supplied to the inductors.
  • a period of the control method is 1 s to 5 s.
  • the time division multiplex method is preferably used when a total number of operated inductor coils exceeds a total number of all frequency units and, in particular, all heating powers of the operated inductor coils are different.
  • control unit is provided, at least two inductor coils in a time division multiplex method
  • a high ease of use can be achieved, in particular in an induction heater in which the total number of inductor coils is greater than the total number of frequency units.
  • any independent power stages for the inductor coils can be achieved.
  • the control unit is provided to select the two time-division-multiplexed inductor coils, taking into account a total number of past switching operations of the switching elements of the switching arrangement. Assuming that the control unit is intended to "select the two time-division-multiplexed inductor coils considering a total number of past switching operations of the switching elements of the switching arrangement", it should be understood in particular that the control unit selects from a single point of view the two inductor coils to be time-division multiplexed a minimization of switching operations of each individual switching element of the switching arrangement meets.
  • control unit is provided to operate the two inductor coils in the time-division multiplex method, which are connected to the same frequency unit via a common switching element, which has the minimum total number of past switching operations of all switching elements of the switching arrangement.
  • control unit is specially designed to detect and store the total number of past switching operations for each switching element.
  • a total number of all inductor coils is greater than a total number of all frequency units.
  • a “total number of inductor coils” should be understood to mean, in particular, the total number of all inductor coils of an induction hob.
  • a “total number of all frequency units” should be understood in particular the total number of all frequency units of the induction hob. This can reduce material and costs.
  • Advantageous is the total number of frequency units two in an induction hob with at least three inductor coils.
  • the total number of frequency units is four in a matrix induction hob.
  • a "matrix induction hob” is to be understood in particular an induction hob, in which the inductor coils are arranged in a regular grid under a cooktop plate, and a heated by means of the inductor coil region of the hob plate preferably at least 60%, in particular at least 70%, preferably at least 80% and particularly advantageously comprises at least 90% of a total area of the hob plate.
  • the matrix induction hob comprises at least 10, in particular at least 20, advantageously at least 30 and particularly advantageously at least 40 inductor coils. In this way, despite a limited number of frequency units, especially in matrix induction hobs, where experience teaches that usually a maximum of four cookware are heated, a high level of operating comfort can be ensured.
  • a sum of nominal powers of all inductor coils is greater than a sum of nominal powers of all frequency units.
  • a “sum of nominal powers of all inductor coils” is to be understood in particular as the sum of the nominal electrical powers of all induction coils of the induction hob.
  • a “sum of nominal powers of all frequency units” should in particular be understood as the sum of the nominal electrical powers of all frequency units of the induction hob.
  • a “nominal power" of a unit is to be understood in particular to mean a power for which the unit is designed for continuous operation.
  • the sum of the nominal powers of the frequency units preferably corresponds to an electric power provided maximally for the induction hob from the outside. This can reduce costs.
  • Fig. 1a shows a first induction hob with a cooktop plate 40a of a glass ceramic in a plan view.
  • the heating zone 42a has a diameter of 15 cm and has a nominal power of 1.4 kW and a peak power of 1.8 kW for a Kochschub istsschreib.
  • the heating zone 44a has a diameter of 18 cm and has a nominal power of 1.8 kW and a peak power of 2.5 kW for a Kochschub istsschreib.
  • the heating zone 46a has a diameter of 18 cm and has a nominal power of 1.8 kW and a peak power of 2.5 kW for a Kochschub istsWrit.
  • the heating zone 48a has a diameter of 15 cm and has a nominal power of 1.4 kW and a peak power of 1.8 kW for a Kochschub Anlagensschreib.
  • Each heating zone 42a, 44a, 46a, 48a has an inductor coil 10a, 12a, 14a, 16a associated with it below the hob plate 40a.
  • the heating zone 42a is associated with the inductor coil 10a.
  • the heating zone 44a is associated with the inductor coil 12a.
  • the heating zone 46a is associated with the inductor coil 14a.
  • the heating zone 48a is associated with the inductor coil 16a.
  • Fig. 1b shows an electrical circuit diagram of a first induction heating of the first induction hob.
  • the induction heating device comprises four inductor coils 10a, 12a, 14a, 16a and two frequency units 24a, 26a.
  • the frequency units 24a, 26a each have an output power of 2.3 kW.
  • a total number of all the inductor coils 10a, 12a, 14a, 16a is larger as a total number of all frequency units 24a, 26a.
  • a sum of nominal powers of all inductor coils 10a, 12a, 14a, 16a is greater than a sum of nominal powers of all frequency units 24a, 26a.
  • the invention is based on the fact that the output power of a single frequency unit 24a, 26a is sufficient to power one of the two small heating zones 42a, 48a in a cooking thrust mode by only one frequency unit 24a, 26a.
  • the switching arrangement 22a is provided to connect the inductor coils 10a, 12a, 14a, 16a respectively to one of the two frequency units 24a, 26a and one of two resonant units 18a, 20a of the induction heater.
  • the switching arrangement 22a is provided to selectively associate the two inductor coils 10a, 16a associated with the small heating zones 42a, 48a with the first resonance unit 18a or the second resonance unit 20a.
  • the switching arrangement 22a is provided to selectively associate the two inductor coils 12a, 14a associated with the larger heating zones 44a, 46a with one of the two frequency units 24a, 26a.
  • the frequency units 24a, 26a each include a snubber capacitor bank 54a, 56a and an inverter 50a, 52a.
  • the inverter 50a includes a first insulated gate bipolar transistor (hereinafter abbreviated to "IGBT") 58a and a second IGBT 60a.
  • the inverter 52a has a first IGBT 62a and a second IGBT 64a.
  • IGBTs any other switching unit that appears expedient to the person skilled in the art can be used, but preferably a bidirectional unipolar switch.
  • the induction heating device has a connection to a country-specific AC voltage source 66a, which supplies a mains voltage with an effective value of 230 V and a frequency of 50 Hz.
  • a corresponding AC power source supplies a 60 Hz power line voltage.
  • the voltage of AC power source 66a first becomes a filter 68a of the induction heaters which eliminates high-frequency noise and is essentially a low-pass filter.
  • a voltage filtered by the filter 68a is rectified by a rectifier 70a of the induction heater, which may be a bridge rectifier, so that a rectified voltage is applied to an output of the rectifier 70a, between a collector of the IGBT 58a and an emitter of the IGBT 60a is present.
  • the rectified voltage is also applied between a collector of the IGBT 62a and an emitter of the IGBT 64a.
  • An emitter of the IGBT 58a is conductively connected to a collector of the IGBT 60a.
  • an emitter of the IGBT 62a is conductively connected to a collector of the IGBT 64a.
  • the snubber capacitor banks 54a, 56a each consist of two capacitors, wherein a first capacitor is connected in parallel with the first IGBT 58a, 62a and a second capacitor is connected in parallel with the second IGBT 60a, 64a of the respective frequency unit 24a, 26a.
  • the switching arrangement 22a comprises six switching elements 28a, 30a, 32a, 34a, 36a, 38a.
  • the switching elements 28a, 30a, 32a, 34a, 36a, 38a are SPDT relay and identical.
  • Each of the switching elements 28a, 30a, 32a, 34a, 36a, 38a has a first, a second and a third contact and a coil, wherein the first contact by a corresponding control of the coil is selectively conductively connected to the second or the third contact ,
  • the resonance units 18a, 20a each consist of two resonance capacitors 72a, 74a, 76a, 78a.
  • the rectified by the rectifier 70a voltage is applied to the two series-connected resonance capacitors 72a, 74a of the resonance unit 18a. Further, the rectified voltage is applied to the two series resonance capacitors 76a, 78a of the resonance unit 20a.
  • the resonance unit 18a is electrically connectable to the inductor coil 10a via the switching element 28a and to the inductor coil 16a via the switching element 30a. Further, the resonance unit 18a between the two resonance capacitors 72a, 74a is fixedly connected to the inductor coil 12a.
  • the resonance unit 20a between the two resonance capacitors 76a, 78a is also via the switching element 28a with the inductor coil 10a and via the switching element 30a with the inductor coil 16a electrically connected. Further, the resonance unit 20a is fixedly connected to the inductor coil 14a between the two resonance capacitors 76a, 78a. Further, the inductor coil 10a is connected via the switching element 28a depending on the switching position of the switching element 28a either with the inductor coil 12a or with the inductor coil 14a. Furthermore, depending on the switching position of the switching element 30a, the inductor coil 16a is connected via the switching element 30a either to the inductor coil 12a or to the inductor coil 14a.
  • the inductor coil 10a is connectable to the frequency unit 24a via the two switching elements 32a and 34a. A connection of the inductor coil 10a to the frequency unit 26a is excluded. Conversely, the inductor coil 16a is connectable to the frequency unit 26a via the two switching elements 36a and 38a. A connection of the inductor coil 16a to the frequency unit 24a is excluded.
  • the inductor coil 12a is electrically connectable to the frequency unit 24a via the two switching elements 32a and 34a or to the frequency unit 26a via the switching element 36a.
  • the inductor coil 14a is electrically connectable to the frequency unit 26a via the two switching elements 36a and 38a or to the frequency unit 26a via the switching element 32a.
  • the induction heater includes a control unit 39a (in FIG Fig. 1b not shown), which is intended to control the switching arrangement 22a and the frequency units 24a, 26a and regulate a predetermined heating power.
  • the control unit 39a selects a frequency unit 24a, 26a and controls the switching arrangement 22a, so that a conductive connection between the frequency unit 24a , 26a and the inductor coil 10a, 12a, 14a, 16a associated with the selected heating zone 42a, 44a, 46a, 48a.
  • the two of the four heating zones 44a, 46a it is possible to select a heating output which exceeds the nominal power of a single frequency unit 24a, 26a.
  • the control unit 39a provided to operate the heating zones 44a, 46a associated inductors 12a, 14a in a booster mode in which an inductor coil 12a, 14a is operated in parallel to two frequency units 24a, 26a.
  • the control unit 39a switches the switching element 32a to the upper position, the switching element 34a to the lower position, and the switching element 36a to the upper position (see FIG. Fig. 1b ).
  • the control unit 39a switches the switching element 32a to the lower position, the switching element 36a to the lower position and the switching element 38a to the upper position.
  • control unit 39a assigns each of the two selected heating zones 42a, 44a, 46a, 48a to a frequency unit 24a, 26a, respectively the switching arrangement 22a controls accordingly.
  • control unit 39a is provided with at least two of the three activated inductor coils 10a, 12a, 14a, 16a corresponding to the selected heating zones 42a , 44a, 46a, 48a are operable in a time-division multiplexing manner.
  • the control unit 39a selects the two time-division-multiplexed inductors 10a, 12a
  • the inductor coil 14a is assigned to the frequency unit 26a and the resonance unit 20a by means of the switching elements 36a, 38a alone
  • the two inductor coils 10a, 12a are assigned to the frequency unit 24a and the resonance unit 18a.
  • the two switching elements 28a, 32a are each in the upper position.
  • the switching element 34a is controlled by the control unit 39a so as to periodically change its position and thus connect the inductor coil 10a during a period T 1 and the inductor coil 12a to the frequency unit 24a during a period T 2 .
  • Lengths of the time periods T 1 and T 2 are at a constant output power of the frequency unit 24a in a same ratio as selected power levels P 1 and P 2 for the two inductors 10a, 12a associated heating zones 42a, 44a.
  • Decisive in the time division multiplex method is the constant output power of the frequency unit 24a in different switch positions of the switching element 34a. This is accomplished by adjusting the switching frequency and the duty cycle of the inverter 50a of the frequency unit 24a.
  • the control unit 39a selects the two inductor coils 10a, 12a, 14a, 16a to be time-division-multiplexed in consideration of three aspects. First, the control unit 39a is provided to associate the two inductor coils 10a, 12a, 14a, 16a to be time division multiplexed with the same resonance unit 18a, 20a. Secondly, the control unit 39a is provided to select the two inductors 10a, 12a, 14a, 16a to be time-division multiplexed, depending on the selected power levels for the associated heating zones 42a, 44a, 46a, 48a.
  • control unit 39a generally selects the time-division multiplexing inductor coils 10a, 12a, 14a, 16a associated with the two heating zones 42a, 44a, 46a, 48a with the smallest selected power stage.
  • the heating coil 42a, 44a, 46a, 48a with the largest selected power level associated inductor 10a, 12a, 14a, 16a is usually operated on its own at a frequency unit 24a, 26a.
  • the control unit 39a is provided, in the meantime, for the two time-division-multiplexed inductor coils 10a, 12a, 14a, 16a taking into account a total number of switching operations of the switching elements 28a, 30a, 32a, 34a, 36a, 38a of FIG Select switching arrangement 22a.
  • the control unit 39a detects the total number of switching operations for each switching element 28a, 30a, 32a, 34a, 36a, 38a and stores this value in a dedicated semi-permanent electronic memory.
  • the control unit 39a selects those two time-division multiplexing inductors 10a, 12a, 14a, 16a, which perform a time-division multiplexing using of that switching element 28a, 30a, 32a, 34a, 36a, 38a allow the smallest total number of switching operations.
  • the control unit 39a may also associate the two inductor coils 10a, 14a for the time division multiplexing method. In this case, the inductor coil 12a is assigned to the frequency unit 26a and the resonance unit 18a by means of the switching element 36a.
  • the two inductor coils 10a, 14a are assigned to the frequency unit 24a and the resonance unit 20a.
  • the switching element 32a is controlled by the control unit 39a so as to periodically change its position.
  • the control unit 39a is provided to operate the inductors 10a, 12a, 14a, 16a in pairs in time-division multiplexing.
  • An assignment decision takes into account the same aspects as in the case of three heated heating zones 42a, 44a, 46a, 48a.
  • Fig. 2a and 2b a further embodiment of the invention is shown.
  • the following descriptions are essentially limited to the differences between the embodiments, with respect to the same components, features and functions on the description of the other embodiments, in particular the Fig. 1a and 1b , can be referenced.
  • the letter a in the reference numerals of the embodiment in the Fig. 1a and 1b by the letter b in the reference numerals of the embodiment of Fig. 2a and 2b replaced.
  • identically designated components in particular with regard to components with the same reference numerals, can in principle also to the drawings and / or the description of the other embodiment, in particular the Fig. 1a and 1b , to get expelled.
  • Fig. 2a shows a second induction hob with a cooktop plate 40b made of a glass ceramic in a plan view.
  • the heating zone 42b has a diameter of 15 cm and has a nominal power of 1.4 kW and a peak power of 1.8 kW for a Kochschub istsschreib.
  • the heating zone 44b has a diameter of 24 cm and has a nominal power of 2.2 kW and a peak power of 3.3 kW for a Kochschub istsschreib.
  • the heating zone 46b has a diameter of 18 cm and has a nominal power of 1.8 kW and a peak power of 2.5 kW for a Kochschub istsWrit.
  • Each heating zone 42b, 44b, 46b is associated below the cooktop panel 40b with an inductor coil 10b, 12b, 14b.
  • the heating zone 42b is associated with the inductor coil 10b.
  • the heating zone 44b is associated with the inductor coil 12b.
  • the heating zone 46b is associated with the inductor coil 14b.
  • Fig. 2b shows an electrical circuit diagram of a second induction heater of the second induction hob.
  • the induction heating device comprises three inductor coils 10b, 12b, 14b and two frequency units 24b, 26b. Due to a smaller number of inductor coils 10b, 12b, 14b compared to the previous embodiment, a switching arrangement 22b in this embodiment has only four switching elements 28b, 32b, 34b, 36b. With regard to an interconnection of the inductor coils 10b, 12b, 14b and a control by a control unit 39b, reference is made to the previous exemplary embodiment.
  • an induction heating device has further switching elements and more than four inductor coils, which are connected to frequency units by means of the further switching elements.
  • the switching elements which are designed as SPDT relays, are each replaced by two SPST relays.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • General Induction Heating (AREA)
  • Induction Heating Cooking Devices (AREA)
EP11187090A 2010-11-10 2011-10-28 Dispositif de chauffage à induction Withdrawn EP2453714A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ES201031652 2010-11-10

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Publication Number Publication Date
EP2453714A1 true EP2453714A1 (fr) 2012-05-16

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014033580A1 (fr) * 2012-08-27 2014-03-06 BSH Bosch und Siemens Hausgeräte GmbH Appareil électroménager
EP2744300A1 (fr) * 2012-12-11 2014-06-18 BSH Bosch und Siemens Hausgeräte GmbH Dispositif domestique de chauffage par induction

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2216255A1 (de) * 1971-04-06 1973-05-30 Environment One Corp Vorrichtung bzw. schaltung zur induktiven heizung eines metallgegenstandes mittels einer spule
WO1998032310A1 (fr) * 1997-01-20 1998-07-23 Induced Energy Ltd. Appareil de chauffage par induction
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
WO2011080642A1 (fr) * 2009-12-28 2011-07-07 BSH Bosch und Siemens Hausgeräte GmbH Système d'appareil de cuisson

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2216255A1 (de) * 1971-04-06 1973-05-30 Environment One Corp Vorrichtung bzw. schaltung zur induktiven heizung eines metallgegenstandes mittels einer spule
WO1998032310A1 (fr) * 1997-01-20 1998-07-23 Induced Energy Ltd. Appareil de chauffage par induction
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
WO2011080642A1 (fr) * 2009-12-28 2011-07-07 BSH Bosch und Siemens Hausgeräte GmbH Système d'appareil de cuisson

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014033580A1 (fr) * 2012-08-27 2014-03-06 BSH Bosch und Siemens Hausgeräte GmbH Appareil électroménager
EP2744300A1 (fr) * 2012-12-11 2014-06-18 BSH Bosch und Siemens Hausgeräte GmbH Dispositif domestique de chauffage par induction

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