EP2744300B1 - Dispositif domestique de chauffage par induction - Google Patents

Dispositif domestique de chauffage par induction Download PDF

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Publication number
EP2744300B1
EP2744300B1 EP13195726.8A EP13195726A EP2744300B1 EP 2744300 B1 EP2744300 B1 EP 2744300B1 EP 13195726 A EP13195726 A EP 13195726A EP 2744300 B1 EP2744300 B1 EP 2744300B1
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EP
European Patent Office
Prior art keywords
unit
resonance
inductors
heating device
induction heating
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EP13195726.8A
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German (de)
English (en)
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EP2744300A1 (fr
Inventor
Daniel Anton Falcon
Carlos CALVO MESTRE
Pablo Jesus Hernandez Blasco
Sergio Llorente Gil
Daniel Palacios Tomas
Diego Puyal Puente
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BSH Hausgeraete GmbH
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BSH Hausgeraete GmbH
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Publication of EP2744300A1 publication Critical patent/EP2744300A1/fr
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    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/02—Induction heating
    • H05B6/06—Control, e.g. of temperature, of power
    • H05B6/062—Control, e.g. of temperature, of power for cooking plates or the like
    • H05B6/065—Control, e.g. of temperature, of power for cooking plates or the like using coordinated control of multiple induction coils

Definitions

  • the invention is based on a household appliance induction heating device according to the preamble of claim 1.
  • the object of the invention is in particular to provide a generic device with improved properties in terms of high electrical efficiency and / or high maximum heating power.
  • 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 a domestic appliance induction heating device, in particular a cooktop induction heating device, with at least one heating frequency unit, at least two inductors which are operated in at least one operating mode parallel to the heating frequency unit, at least one resonance unit which is coupled to the heating frequency unit at least in the operating mode, and at least a control unit.
  • control unit is provided in at least one operating mode, at least in response to a number of parallel operated by the Schufrequreckeninheit inductors to adjust the resonance unit in size.
  • control unit is provided to set a larger capacity of the resonance unit with a high number of inductors than with a low number of inductors.
  • An "inductor” should in particular be understood to mean a heating element which is intended to emit an electromagnetic alternating field which is intended to be converted into heat in an advantageously metallic, preferably ferromagnetic, cooking utensil or oven heating element by means of eddy currents and / or remagnetization effects become.
  • the inductor in at least one operating state, converts a power of at least 100 W, in particular at least 300 W, advantageously at least 1000 W and preferably at least 2000 W, into an alternating magnetic field.
  • the inductor is formed by an electrical conductor, in particular a stranded conductor, which, especially in the form of a flat coil, is wound to an inductance.
  • a "heating frequency unit” should in particular be understood to mean an electrical unit which has an oscillating electrical signal, preferably with a frequency of at least 1 kHz, in particular of at least 10 kHz, advantageously of at least 20 kHz, and in particular of not more than 100 kHz for at least one inductor generated.
  • the heating frequency unit is provided to provide an electrical power of at least 100 W, in particular at least 300 W, advantageously at least 1000 W and preferably at least 2000 W, required in at least one operating state for at least one inductor.
  • the heating frequency unit comprises at least one inverter, which preferably has at least two bidirectional unipolar switches, which are formed in particular by a transistor and a diode connected in parallel, and particularly advantageously at least one snubber capacitor connected in parallel to the bidirectional unipolar switches. which is in particular formed by at least one capacitor.
  • a voltage tap of the heating frequency unit is arranged in particular at a common contact point of two bidirectional unipolar switches.
  • a “resonance unit” is to be understood in particular as meaning a unit which is provided, preferably in series with an inductor, alternatively in parallel with an inductor, together with the inductor to form an electrical resonant circuit which is advantageously excited by the heating frequency unit in at least one operating mode becomes.
  • an inductor which is operated by the heating frequency unit, is arranged in a bridge branch between the heating frequency unit and the resonance unit.
  • a resonance unit is "coupled" to a heating frequency unit should in particular mean that an alternating current generated by the heating frequency unit at least partially flows via the resonance unit.
  • the inductors are advantageous with operated at a switching frequency which is greater than a resonance frequency, which results from a capacity of the resonance unit and an inductance of the inductors.
  • a high efficiency can be achieved by the embodiment according to the invention.
  • a displacement of a resonance curve takes place, whereby a resonant frequency can be shifted to a low frequency, preferably above the threshold of 20 kHz, thus resulting in low switching losses , in particular at the same time high comfort, can be achieved and / or whereby a high overall performance can be achieved.
  • the domestic appliance induction heating device has at least one switching unit which switches at least two of the inductors, in at least one operating state, at least substantially in parallel.
  • two inductors are essentially "connected in parallel"
  • a closed conduction path exists which, except for the two inductors, only capacitances, resistances, in particular line resistances, sensors, in particular current sensors; and of parts of the heating frequency unit different switching elements, in particular a maximum of two switching elements having.
  • the closed power path has no sensor and / or no capacity.
  • the inductors each have an at least substantially identical inductance in a free and at least substantially complete, preferably of the same, in particular same, cooking utensil, occupied state, in particular a state in which the inductor is completely covered by a cooking utensil.
  • two values are at least substantially equal, should be understood in particular that the values differ by a maximum of 60%, in particular a maximum of 40%, advantageously a maximum of 20%, preferably a maximum of 10%, in particular a larger of the values as a reference is seen.
  • the inductors are of similar construction and, in particular, have an at least substantially identical shape, size and / or orientation.
  • a “switching unit” is to be understood in particular as a unit which has at least one switching element, in particular a number of switching elements, which is different from a switching element of a heating frequency unit.
  • the switching element is formed by a relay.
  • the switching element is formed by a semiconductor switch, in particular an IGBT, advantageously a MOSFET.
  • a low-cost and / or flexible design can be achieved.
  • the inductors are operated alternately by a heating frequency unit, wherein a switching unit is provided, which alternately couples the inductors to the heating frequency unit.
  • the resonance unit at least one Operaresonanziens, in particular at least two, advantageously at least three, more preferably at least four, Operaresonanziensen, and at least one switching element, in particular a number of switching elements corresponding to a number of Operaresonanziens, advantageously a number, the is one less than a number of the partial resonant units, which is intended to couple the Operaresonanziens in at least one operating condition with the Schufrequant exotic.
  • the resonance unit has at least one partial resonance unit which, independently of operating state, is coupled to the heating frequency unit, in particular is not coupled to another heat frequency unit in any operating state.
  • the switching element is provided for switching the partial resonance unit of a further partial resonance unit in parallel in at least one operating mode. In particular, a flexible and / or inexpensive selection of a resonance capacity can be achieved.
  • the resonance unit has a series of partial resonance units, wherein the sequence members, except for the first sequence member, each have a capacitance which corresponds at least substantially to an equal fraction, in particular one half, of a capacity of a sequence predecessor.
  • the switching elements of the Operaresonanzawakien are each provided to couple the Operaresonanzawamachen separately with the Schufrequenzü.
  • a high degree of flexibility in a selection of a resonance capacity can be achieved.
  • the domestic appliance induction heating device has at least one switching unit which is provided to couple different ones of the inductors solely to the heating frequency unit in different operating modes.
  • a high variety of operating modes can be achieved.
  • each of the inductors in an operating state in which it is operated by the heating frequency unit is coupled to the individual resonance unit, which is coupled to the heating frequency unit.
  • a simple construction can be achieved.
  • the invention can be used in a hob, which has at least one variable cooking area, wherein the inductors are part of the variable cooking area.
  • a "variable cooking area” should be understood to mean, in particular, a cooking area which is intended to form at least one cooking zone adapted to at least one set of cooking utensils.
  • the variable cooking area differs from a cooking surface in the cooking zones, in particular by markings on the cooking surface, are fixed.
  • the variable cooking region is formed by at least one inductor matrix.
  • variable cooking area has at least one sensor unit, which is formed in particular by the inductors themselves, which is intended to detect mounted cooking utensils, in particular by measuring at least one inductance and / or at least one capacitance.
  • the variable cooking area is provided to associate a detected cooking zone with a cooking zone adapted in shape, size and / or position.
  • variable cooking area has at least one control unit which is provided to evaluate measured values of the sensor unit, to calculate at least one cooking zone and to determine inductors which form this cooking zone.
  • control unit which is provided to evaluate measured values of the sensor unit, to calculate at least one cooking zone and to determine inductors which form this cooking zone.
  • FIG. 1 1 shows a domestic appliance 10 designed as an induction cooktop with a domestic appliance induction heating device 12 designed as a cooktop induction heating unit.
  • the domestic appliance induction heating device 12 has a variable cooking area 14.
  • the domestic appliance induction heating device 12 has an operator interface 16 designed as a touch display, which is provided for operating the domestic appliance induction heating device 12 by sending electrical signals to and receiving from a control unit 18 of the domestic appliance induction heating device 12.
  • the variable cooking area 14 is designed as an inductor matrix.
  • the domestic appliance induction heating device 12 has a multiplicity of inductors 20, 22, 24, 26 ( FIG. 2 ).
  • the inductors 20, 22, 24, 26 and the operator interface 16 are disposed on a lower surface of a cooking plate 13 of the domestic appliance induction heater 12.
  • the home appliance induction heater 12 further includes a heating frequency unit 30 and a resonance unit 40.
  • the heating frequency unit 30 is designed as an inverter.
  • the Schufrequenzong 30 is formed of two switching elements 34, 35 which are connected in series, wherein a first contact of a first of the switching elements 34 with a first pole 32 of a power supply 28 and a second contact of a second of the switching elements 35 with a second pole 33 of Power supply 28 is connected.
  • the power supply 28 has a rectifier unit, a filter unit and a buffer capacity.
  • the switching elements 34, 35 are designed as IGBTs.
  • a second contact of the first switching element 34 and a first contact of the second switching element 35 are connected to each other and form a Walkerfrequenzausgang 31.
  • the Schufrequenzü 30 each have freewheeling diodes 36, 37 and Snubberkapazticianen 38, 39, which are connected in parallel to the switching elements 34, 35.
  • the domestic appliance induction heating device 12 has a switching unit 50 which, in different operating states, connects the inductors 20, 22, 24, 26 combined to form a heating zone in parallel.
  • the switching unit 50 has switching elements 52, 54, 56, 58 which are each provided to connect a single one of the inductors 20, 22, 24, 26 with the heating frequency unit 30, more precisely the heating frequency output 31.
  • the switching elements 52, 54, 56, 58 are formed as a single-pole power switch.
  • the switching elements 52, 54, 56, 58 are each arranged between the heating frequency output 31 and a first contact of the inductors 20, 22, 24, 26. Second contacts of the inductors 20, 22, 24, 26 are connected directly to each other.
  • any one of the inductors 20, 22, 24, 26 can be coupled to the heating frequency unit 30 alone by the switching unit 50.
  • Each of the inductors 20, 22, 24, 26 is coupled to the resonance unit 40 in an operating state in which it is operated by the heating frequency unit 30.
  • the second contacts are connected to a resonance contact 41 of the resonance unit 40.
  • a switching unit is provided, the operating mode-dependent separation and connection of the inductors 20, 22, 24, 26 of the resonance unit 40 and / or a coupling of the inductors 20, 22, 24, 26 at allows an alternative heating frequency unit, which is operated in particular by another energy source, which in particular has a different phase. Higher overall performance and easily independent cooking zones can be achieved.
  • the resonance unit 40 has two partial resonance units 42, 44.
  • the partial resonance units 42, 44 are each formed by two resonance capacitances 43, 43 ', 45, 45'.
  • the resonance capacitances 43, 43 ', 45, 45' of a partial resonance unit 42, 44 are each connected in series between the poles 32, 33 of the power supply 28.
  • the resonance capacitances 43, 43 ', 45, 45' of a partial resonance unit 42, 44 each have an equal capacitance.
  • the resonance unit 40 is coupled to the heating frequency unit 30 in each operating state of the heating frequency unit 30.
  • a first of the partial resonance units 42 is coupled to the heating frequency unit 30 independently of the operating state.
  • the first partial resonance unit 42 has a center tap between the two Resonant capacitances 43, 43 ', which is directly connected to the resonance contact 41. Furthermore, the resonance unit 40 has a switching element 64 which is provided to couple a second one of the partial resonance units 44 with the heating frequency unit 30 in different operating modes. The switching element 64 is provided to connect a center tap between the resonance capacitances 45, 45 'of the second partial resonance unit 44 to the resonance contact 41.
  • the control unit 18 is provided to control the heating frequency unit 30.
  • the control unit 18 serves as a clock generator for the switching elements 34, 35 of the heating frequency unit 30.
  • the control unit 18 is provided in different operating modes depending on a number of parallel operated by the heating frequency unit 30 inductors 20, 22, 24, 26, the resonance unit in their To adjust size.
  • the control unit 18 is provided, depending on a number of parallel to be operated inductors 20, 22, 24, 26, the second Operaresonanziens 44 via the switching element 64 with the Schufrequenzinheit 30 to couple or separate from it.
  • the control unit 18 is designed to increase a capacity of the resonance unit 40 when a number of parallel-operated inductors 20, 22, 24, 26 increases.
  • the control unit 18 is provided to turn on the second sectionresonanziens 44 from a number of three parallel-connected inductors 20, 22, 24, 26.
  • FIG. 3 shows a diagram with Schufrequenz-power dependencies 71, 72, 73, 74, 75, 76 in different switching states.
  • a first heating frequency power dependency 71 represents a state having a single inductor 20, 22, 24, 26 that is coupled only to the first partial resonant unit 42.
  • a second heating frequency power dependency 72 represents a state with two inductors 20, 22, 24, 26 connected in parallel, which are coupled only to the first partial resonant unit 42. Due to the lower total inductance of the two inductors 20, 22, 24, 26 connected in parallel, a higher resonance frequency results compared to a single inductor 20, 22, 24, 26. Furthermore, there is a higher maximum power.
  • a third heating frequency power dependency 73 represents a state with three inductors 20, 22, 24, 26 connected in parallel, which are coupled only to the first partial resonant unit 42. Due to the lower total inductance of the three inductors 20, 22, 24, 26 connected in parallel, a higher resonance frequency results compared with the parallel connection of two inductors 20, 22, 24, 26. Furthermore, there is a higher maximum power.
  • a fourth heating frequency power dependency 74 represents a state with four parallel-connected inductors 20, 22, 24, 26 that are only coupled to the first partial resonant unit 42. Due to the lower total inductance of the four inductors 20, 22, 24, 26 connected in parallel, a higher resonance frequency results compared with the parallel connection of three inductors 20, 22, 24, 26. Furthermore, there is a higher maximum power.
  • a fifth heating frequency power dependency 75 represents a state with three inductors 20, 22, 24, 26 connected in parallel, which are coupled to both the first and the second partial resonant units 42, 44. Due to the higher capacity of the resonance unit 40, compared to the parallel connection of three inductors 20, 22, 24, 26 with only one coupled partial resonance unit 42, a lower resonance frequency results. Furthermore, there is a higher maximum power.
  • a sixth heating frequency power dependency 76 represents a state with four parallel-connected inductors 20, 22, 24, 26 coupled to both the first and the second partial resonant units 42, 44. Due to the higher capacitance of the resonance unit 40, compared with the parallel connection of four inductors 20, 22, 24, 26 with only one coupled partial resonance unit 42, a lower resonance frequency results. Due to the lower total inductance of the four inductors 20, 22, 24, 26 connected in parallel, a higher resonance frequency results compared with the parallel connection of three inductors 20, 22, 24, 26 with both coupled partial resonance units 42, 44. Furthermore, there is a higher maximum power.
  • a capacity of the resonance unit 40 is preselected by the control unit 18 by controlling the switching element 64. Subsequently, by changing electrical parameters, such as the heating frequency and the duty cycle, of the heating frequency unit 30 driving, signals with the aid of current and voltage sensors (not shown) set for the inductors 20, 22, 24, 26 requested heating power.
  • the heating frequency of a set initial value which corresponds for example to a maximum of the heating frequency, gradually reduced.
  • embodiments of the invention are conceivable in which the inductors are of dissimilar design and / or wherein the inductors form separate cooking zones.
  • FIGS. 4 to 5 two further embodiments of the invention are 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 FIGS. 1 to 3 , can be referenced.
  • the letters a and b to the reference numerals of the embodiments of FIGS. 4 to 5 added.
  • 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 embodiments, in particular the FIGS. 1 to 3 , to get expelled.
  • FIG. 4 shows a resonance unit 40a of an induction heating device according to the invention.
  • the resonance unit 40a has partial resonance units 42a, 44a, 46a, 48a in any number.
  • a first of the partial resonance units 42a has two resonance capacitances 43a, 43'a.
  • the resonance capacitances 43a, 43'a are connected in series between two poles 32a, 33a of a power supply, of which a heating frequency unit is coupled to the resonance unit 40a.
  • a common contact of the resonance capacitances 43a, 43'a forms a resonance contact 41a of the resonance unit 40a.
  • a second of the partial resonance units 44a has a resonance capacitance 45a.
  • the resonance unit 40a has a first switching element 64a which connects or disconnects a first contact of the resonance capacitance 45a of the second partial resonance unit 44a with the resonance contact 41a.
  • a second contact of the resonant capacitance 45a is connected to a pole 33a of the power supply.
  • a third of the partial resonance units 46a has a resonance capacitance 47a.
  • the resonance unit 40a has a second switching element 66a which establishes a connection of a first contact of the resonance capacitance 47a of the third partial resonance unit 46a with the first contact of the second partial resonance unit 42a.
  • a second contact of the resonant capacitance 45a is connected to a pole 32a of the power supply.
  • the further subresonance units 48a each have a resonance capacity 49a, whose first contacts can each be connected via further switching elements 68a to a first contact of a previous partial resonant unit 46a.
  • the resonance capacitances 45a, 47a, 49a of the second, third and further subresonance units 44a, 46a, 48a have an equal capacitance.
  • the second contacts of the resonance capacitors 45a, 47a, 49a of the second, third and further subresonance units 44a, 46a, 48a are alternately connected to different power supply poles 32a, 33a to minimize load on a buffering capacity of the high frequency equalizing current power supply.
  • each of the partial resonant units has a second resonant capacitance 45a ', 47a', 49a ', each between the first contact of the other resonant capacitance 45a, 47a, 49a and the pole 32a, 33a of the power supply, which does not match the other resonant capacitance 45a, 47a, 49a is connected.
  • FIG. 5 shows a resonance unit 40b of an induction heating device according to the invention.
  • the resonance unit 40b has subresonance units 42b, 44b, 46b, 48b in any number.
  • the resonance unit 40b has, for each of the partial resonance units 42b, 44b, an associated switching element 62b, 64b, 66b, 68b which is provided for separately connecting the associated partial resonance unit 42b, 44b, 46b, 48b to a resonance contact 41b of the resonance unit 40b ,
  • the Operasonanzawaen 42b, 44b, 46b, 48b form a sorted according to their capacity, descending sequence, wherein the terms of terms, except for a first sequence term, each having a capacity corresponding to one half of a capacity of a sequence predecessor.
  • the partial resonance units 42b, 44b, 46b, 48b each have two resonance capacitances 43b, 43b ', 45b, 45b', 47b, 47b ', 49b, 49b' of the same capacitance.
  • the switching elements 62b, 64b, 66b, 68b are respectively provided for common contacts of the resonance capacitors 43b, 43b ', 45b, 45b', 47b, 47b ', 49b, 49b' arranged in series between the poles of a power supply to the resonance contact 41b to join.
  • FIG. 5 allows an embodiment after FIG. 5 an optimization of a capacity of the resonance unit 40b as a function of cookware properties, a requested heating power and a number of inductors connected in parallel.
  • the control unit tries to set a requested heating power by varying electrical parameters. If the requested heating power is not achievable, since sufficient power can not be achieved, for example, with a heating frequency just above a resonance frequency, a capacitance of the resonance unit 40b is increased by switching the switching elements 62b, 64b, 66b, 68b and the electric current is again varied Parameters started.
  • An output of the heating frequency unit is interrupted during the switching of the switching elements 62b, 64b, 66b, 68b of the resonance unit 40b.
  • an inductor of a configuration according to the invention is simultaneously operated in at least one operating mode, in particular a boost mode, by more than one heating frequency unit, wherein the inductor is connected to heating frequency outputs of both heating frequency units.

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

Claims (9)

  1. Dispositif de chauffage à induction pour appareil ménager, notamment dispositif de chauffage à induction pour table de cuisson, comprenant au moins une unité de fréquence de chauffage (30), au moins deux inducteurs (20, 22, 24, 26) qui, dans au moins un mode de fonctionnement, sont actionnés en parallèle par l'unité de fréquence de chauffage (30), au moins une unité de résonance (40 ; 40a ; 40b) qui est couplée à l'unité de fréquence de chauffage (30) au moins dans le mode de fonctionnement, et au moins une unité de commande (18), caractérisé en ce que l'unité de commande (18), dans au moins un mode de fonctionnement au moins en fonction d'un nombre d'inducteurs (20, 22, 24, 26) actionnés en parallèle par l'unité de fréquence de chauffage (30), est ménagée pour adapter l'unité de résonance (40 ; 40a ; 40b) à leur grandeur.
  2. Dispositif de chauffage à induction pour appareil ménager selon la revendication 1, caractérisé par au moins une unité de commutation (50) qui commute au moins deux des inducteurs (20, 22, 24, 26) au moins essentiellement en parallèle, dans au moins un état de fonctionnement.
  3. Dispositif de chauffage à induction pour appareil ménager selon l'une quelconque des revendications précédentes, caractérisé en ce que l'unité de résonance (40 ; 40a, 40b) présente au moins une unité de résonance partielle (44 ; 44a, 46a, 48a ; 42b, 44b, 46b, 48b) et au moins un élément de commutation (64 ; 64a, 66a, 68a ; 62b, 64b, 66b, 68b), qui sont ménagés pour coupler l'unité de résonance partielle (44 ; 44a, 46a, 48a ; 42b, 44b, 46b, 48b) à l'unité de fréquence de chauffage (30) dans au moins un état de fonctionnement.
  4. Dispositif de chauffage à induction pour appareil ménager selon l'une quelconque des revendications précédentes, caractérisé en ce que l'unité de résonance (40 ; 40a, 40b) présente au moins une unité de résonance partielle (42 ; 42a) qui est couplée à l'unité de fréquence de chauffage (30) indépendamment de l'état de fonctionnement.
  5. Dispositif de chauffage à induction pour appareil ménager selon l'une quelconque des revendications précédentes, caractérisé en ce que l'unité de résonance (40b) présente une suite d'unités de résonance partielle (42b, 44b, 46b, 48b), des membres de la suite, excepté le premier membre de la suite, présentant respectivement une capacité qui correspond au moins essentiellement à une moitié d'une capacité d'un précédent de la suite.
  6. Dispositif de chauffage à induction pour appareil ménager selon l'une quelconque des revendications précédentes, caractérisé par au moins une unité de commutation (50) qui, dans différents modes de fonctionnement, est ménagée pour coupler différents inducteurs (20, 22, 24, 26) seuls à l'unité de fréquence de chauffage (30).
  7. Dispositif de chauffage à induction pour appareil ménager selon l'une quelconque des revendications précédentes, caractérisé en ce que chacun des inducteurs (20, 22, 24, 26), dans un état de fonctionnement dans lequel celui-ci est actionné par l'unité de fréquence de chauffage (30), est couplé à l'unité de résonance (40 ; 40a, 40b). '
  8. Dispositif de chauffage à induction pour appareil ménager selon l'une quelconque des revendications précédentes, caractérisé en ce que les inducteurs (20, 22, 24, 26) font partie d'une zone de cuisson variable.
  9. Appareil ménager, notamment table de cuisson, comprenant au moins un dispositif de chauffage à induction pour appareil ménager (12) selon l'une quelconque des revendications précédentes.
EP13195726.8A 2012-12-11 2013-12-04 Dispositif domestique de chauffage par induction Active EP2744300B1 (fr)

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DE102014213566A1 (de) * 2014-07-11 2016-01-14 E.G.O. Elektro-Gerätebau GmbH Induktionsheizvorrichtung und Verfahren zur Ansteuerung einer Induktionsheizvorrichtung
CN105451384A (zh) * 2014-07-31 2016-03-30 E.G.O.电气设备制造股份有限公司 感应加热***
KR102368372B1 (ko) * 2015-08-04 2022-02-28 삼성전자주식회사 유도 가열 장치 및 그 제어 방법
WO2023104886A1 (fr) * 2021-12-09 2023-06-15 BSH Hausgeräte GmbH Dispositif de table de cuisson à induction

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FR2773014B1 (fr) * 1997-12-23 2000-03-03 Europ Equip Menager Dispositif d'alimentation de plusieurs circuits resonants par un generateur de puissance a onduleur
EP2453714A1 (fr) * 2010-11-10 2012-05-16 BSH Bosch und Siemens Hausgeräte GmbH Dispositif de chauffage à induction
EP2506667B2 (fr) * 2011-03-29 2023-12-13 BSH Hausgeräte GmbH Dispositif de chauffage à induction

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