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EP2520131B1 - Système d'appareil de cuisson - Google Patents

Système d'appareil de cuisson Download PDF

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Publication number
EP2520131B1
EP2520131B1 EP10810979.4A EP10810979A EP2520131B1 EP 2520131 B1 EP2520131 B1 EP 2520131B1 EP 10810979 A EP10810979 A EP 10810979A EP 2520131 B1 EP2520131 B1 EP 2520131B1
Authority
EP
European Patent Office
Prior art keywords
inductor
inverter
cooking appliance
switching
cooking
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.)
Active
Application number
EP10810979.4A
Other languages
German (de)
English (en)
Other versions
EP2520131A1 (fr
Inventor
Daniel Palacios Tomas
José Miguel Burdio Pinilla
Ignacio Garde Aranda
Sergio Llorente Gil
Oscar Lucia Gil
Ignacio Millan Serrano
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 Hausgeraete GmbH
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Publication date
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Publication of EP2520131A1 publication Critical patent/EP2520131A1/fr
Application granted granted Critical
Publication of EP2520131B1 publication Critical patent/EP2520131B1/fr
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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
    • 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
    • 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 cooking device device, in particular a cooktop cooking 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 power output.
  • the invention is based on a cooking device device, in particular cooktop cooking device, with at least two inductors provided for connection to at least one alternating current source, each having at least one capacitance.
  • the cooking appliance device comprises at least one switching unit which is provided to connect the capacities of the inductors with one another in at least one operating mode.
  • a cooking device device which can be advantageously adapted to different power outputs can be provided.
  • this can realize a boost mode with a time-limited power increase, while a power loss in a normal mode can be kept low.
  • a number of necessary components can be kept low.
  • this makes it possible to keep a number of capacitors low, as a result of which a cost-effective cooking appliance device with a high power yield can be realized.
  • an "inductor” is to be understood as meaning, in particular, a structural unit forming a resonant circuit which can be represented in a circuit diagram by means of the capacitance, an inductance and an equivalent resistance.
  • the inductor is provided to heat by induction an object such as a saucepan or a pan, and thus form a cooking point.
  • a "capacity” should be understood to mean in particular a structural unit with at least one capacitor.
  • a capacitance is to be understood as meaning a total capacitance of the resonant circuit formed by means of the inductor, that is to say in particular a capacitance resulting from all the capacitors of the resonant circuit.
  • a capacity of electrical connections, such as in particular connection cable should be neglected.
  • “Provided” is to be understood in particular to be specially equipped and / or designed.
  • At least one of the inductors has an inductance which is connected in the at least one operating state with the two capacitors at the same time.
  • the power output of the inductor can be influenced particularly advantageously.
  • a resonance frequency of the resonant circuit can thereby be changed, whereby a power loss of the resonant circuit can be reduced.
  • An "inductance” should be understood to mean in particular a structural unit with at least one induction coil.
  • an inductance is to be understood as meaning an entire inductance acting on the resonant circuit formed by means of the inductor, i. in particular a resulting from all the voice coils of the resonant circuit inductance.
  • An inductance of electrical connections, in particular connecting cables, should be neglected.
  • the switching unit has at least one switching element which is provided in a switching position to switch the capacitors in parallel.
  • a value of the capacitance which acts on the corresponding resonant circuit can be increased, whereby in particular a maximum power output can advantageously be increased.
  • a “switching element” is to be understood here and below as an element for providing a switchable electrical connection.
  • the switching element may be formed mechanically, such as a switch, electrically formed, such as a relay, or electronically formed, such as a transistor.
  • the cooking appliance device comprises at least a first, the first inductor associated inverter and a second inverter associated with the second inductor.
  • an independent power supply of the inductors can be easily realized.
  • An "association" should be understood to mean, in particular, an assignment in a normal operating mode. In the normal operating mode, preferably the first inverter is associated with the first inductor, ie only for the power supply of the first inductor, whereas the second inverter is associated with the second inductor, ie only for the power supply of the second inductor.
  • the cooking appliance device further comprises a switching unit, which is provided in at least one switching position to switch the two inverters in parallel.
  • a switching unit which is provided in at least one switching position to switch the two inverters in parallel.
  • the switching unit has at least one first switching element, which is provided to connect the first inverter with the second inductor, which is associated with the second inverter.
  • the switching unit has a second switching element, which is provided to connect the second inverter to the first inductor, which is associated with the first inverter.
  • a boost mode can be provided for both inductors, resulting in high flexibility for an operator.
  • the switching unit is provided to connect the inverters each with at most one of the inductors at the same time.
  • the power provided by both inverters can be selectively supplied to an inductor, whereby the power output of this inductor can be increased particularly advantageously.
  • the two inverters can be connected to the same inductor or to different inductors.
  • the cooking appliance device has a control unit which is provided in at least one operating mode to close the switching unit for connecting the capacitors and the switching unit for connecting the inverters at the same time.
  • Fig. 1 schematically shows a circuit diagram of a cooking appliance device according to the invention.
  • the cooking appliance device is designed as a cooktop apparatus.
  • the Garellavoriques shown by way of example comprises two Garstellen 38, 40.
  • the Garstellen 38, 40 of Garausvoriques are each designed analog.
  • the cooking appliance can be provided with any number of Garstellen.
  • the first cooking station 38 comprises a first inverter 26 and a first inductor 10 associated with the first inverter 26.
  • the cooking station 38 comprises a DC voltage source 42.
  • the inverter 26 is designed as a half-bridge converter. It provides an AC voltage by means of the DC voltage of the DC voltage source 42. A frequency generated by the inverter 26 is adjustable.
  • the inverter 26 has two switching elements, which are connected in series between a positive terminal 44 and a negative terminal 46 of the DC voltage source 42 of the cooking station 38.
  • the inverter 26 comprises two diodes, which form so-called freewheeling diodes. A cathode of the first diode is connected to the negative terminal 46 of the DC voltage source 42.
  • An anode of the second diode is connected to the positive terminal 44 of the DC voltage source 42.
  • An anode of the first diode and a cathode of the second diode are connected together.
  • the inverter 26 includes a connecting line 48 for the inductor 10.
  • the anode of the first diode, the cathode of the second diode and the two switching elements are connected to each other via the connecting line 48.
  • the frequency generated by the inverter 26 is adjustable by means of a control of the switching elements.
  • the switching elements of the inverter 26 are formed by means of transistors.
  • the inductor 10 forms a resonant circuit. It comprises an inductor 20 and a capacitor 14.
  • the inductor 10 comprises two capacitors 50, 52.
  • the two capacitors 50, 52 have a common first terminal which is connected to the inductor 20 of the inductor 10 by means of a connecting lead 54 connected is.
  • a second terminal of the capacitor 50 is connected to the positive terminal 44 of the DC voltage source 42.
  • a second terminal of the capacitor 52 is connected to the negative terminal 46 of the DC voltage source 42.
  • the two capacitors 50, 52 are the same size.
  • the inductor 10 comprises an induction coil 56.
  • the induction coil 56 is provided for electromagnetic power coupling to magnetizable objects, such as, in particular, cooking pots.
  • An adjustment of the power output by the induction coil 56 is effected by means of the adjustment of the frequency which has occurred by the inverter 26. The output power becomes maximum when the generated frequency corresponds to a resonant frequency of the inductor 10.
  • the second cooking point 40 is designed analogously. It also comprises a separate DC voltage source 58 for supplying the inverter 28. In principle, however, it is also conceivable to design the two DC voltage sources 42, 58 in one piece.
  • the inverter 28 comprises two transistors Switching elements for switching a frequency of the inverter 28 and two diodes designed as freewheeling diodes. To connect the inductor 12, it comprises a connecting line 72, by means of which the switching elements and the diodes are connected to one another.
  • the inductor 12 comprises an inductance 22 with an induction coil 60 and a capacitance 16 with two capacitors 62, 64.
  • the two capacitors 62, 64 comprise a common first terminal, which is connected to the inductance 22 by means of a connecting lead 66, and a second one in each case Terminal, which are connected to a positive terminal 68 and a negative terminal 70 of the DC voltage source 58 of the second cooking station 40.
  • the cooking device device For switching the cooking stations 38, 40, the cooking device device comprises a switching unit 30 with two switching elements 32, 34.
  • the switching element 32 is assigned to the first inverter and the first inductor 10. It is arranged between the connection line 48 of the inverter 26 and the inductance 20.
  • the switching element 34 is associated with the second inverter 28 and the inductor 12. It is arranged between the connection line 72 of the inverter 28 and the inductance 22.
  • the switching elements 32, 34 are formed by means of relays.
  • each of the switching elements 32, 34 has a first switching position in which it connects the inverter 26, 28 of the corresponding cooking point 38, 40 with the inductor 10, 12 of the corresponding cooking point 38, 40. Since the two switching elements 32, 34 are independently switchable, the two Garstellen 38, 40 are activated independently.
  • a boost mode switchable In the boost mode, the switching unit 30 switches the two inverters 26, 28 parallel to each other and supplies the power provided by both inverters 26, 28 to one of the inductors 10, 12.
  • each of the switching elements 32, 34 additionally has a second switching position. In the second switching position, the switching element 32 connects the connecting line 48 of the first inverter 26 to the connecting line 72 of the second inverter 28. In the second switching position, the switching element 34 connects the connecting line 72 of the second inverter 28 to the inductor 10 of the first cooking point 38.
  • the switching unit 30 connects the inductor 10 with both inverters 26, 28.
  • the switching element 32 which is associated with the inductor 10, switched to its first switching position.
  • the inductor 10 is thus connected to the associated inverter 26.
  • the other switching element 34 is switched to the second switching position.
  • the two inverters 26, 28 are thus connected in parallel with each other. They jointly supply the first inductor 10 (cf. Fig. 2 ).
  • the switching unit 30 connects the inductor 12 with both inverters 26, 28.
  • the switching element 34 which is associated with the inductor 12, switched to its first switching position.
  • the inductor 12 is thus connected to the associated inverter 28.
  • the other switching element 32 is switched to the second switching position.
  • the inverter 26 associated with the first inductor 10 is also connected to the second inductor 12.
  • the two inverters 26, 28 are thus connected in parallel with each other. They jointly supply the second inductor 12.
  • the cooking appliance device comprises, in addition to the switching unit 30, a second switching unit 18, by means of which the capacitors 14, 16 of the two inductors 10, 12 can be connected to one another.
  • the switching unit 18 comprises a switching element 24, by means of which the two connecting lines 54, 66 for connecting the capacitances 14, 16 to the inductors 20, 22 are electrically connectable to each other. By closing the switching element 24, the capacitances 14, 16 of the different cooking stations 38, 40 are connected in parallel. That of the inductors 10, 12, for which the boost mode is switched, is thus available in the boost mode, a higher capacity.
  • the switching element 24 of the switching unit 18 is designed as a relay.
  • the cooking device device comprises a control unit 36, by means of which the switching elements 24, 32, 34 of the switching units 18, 30 and the switching elements of the inverters 26, 28 are controlled.
  • the control unit 36 activates the cooking stations 38, 40 by means of the switching unit 30 in accordance with an operator's specification. For this purpose, it includes the selected cooking point 38, 40 associated switching element 32, 34 and then provides by means of the two switching elements of the corresponding inverter 26, 28 a frequency corresponding to a selected power of the corresponding cooking point 38, 40.
  • the control unit 36 activates the selected cooking point 38, 40 by means of the switching unit 30. In addition, it switches the switching element 32, 34, which is assigned to the inactive Garstelle 38, 40, in the second switching position. In addition, it closes the switching element 24 of the second switching unit 18. Subsequently, by means of the switching elements of both inverters 26, 28, it sets a frequency which corresponds to a resonance frequency of the corresponding inductor 10 taking into account the coupled capacitances 14, 16.

Landscapes

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

Claims (9)

  1. Dispositif d'appareil de cuisson avec au moins deux inducteurs (10, 12) prévus pour le raccordement à au moins une source de courant alternatif, et des éléments constituant un circuit oscillant, lesquels présentent respectivement au moins une capacité (14, 16), avec au moins un premier onduleur (26) affecté au premier inducteur (10) et un deuxième onduleur (28) affecté au deuxième inducteur (12), caractérisé par au moins une unité de commutation (18) prévue afin de relier les capacités (14, 16) des inducteurs (10, 12) l'une à l'autre dans au moins un mode d'exploitation, l'unité de commutation (18) présentant au moins un élément de commutation (24) prévu afin de commuter les capacités (14, 16) en parallèle dans une position de commutation.
  2. Dispositif d'appareil de cuisson selon la revendication 1, caractérisé en ce qu'au moins un des inducteurs (10, 12) présente une inductivité (20, 22) reliée simultanément aux deux capacités (14, 16) dans l'au moins un état d'exploitation.
  3. Dispositif d'appareil de cuisson selon la revendication 1 ou 2, caractérisé par une unité de commutation (30) prévue afin de commuter les deux onduleurs (26, 28) en parallèle dans au moins une position de commutation.
  4. Dispositif d'appareil de cuisson selon la revendication 3, caractérisé en ce que l'unité de commutation (30) présente au moins un premier élément de commutation (32) prévu afin de relier le premier onduleur (26) au deuxième inducteur (12) affecté au deuxième onduleur.
  5. Dispositif d'appareil de cuisson selon la revendication 4, caractérisé en ce que l'unité de commutation (30) présente un deuxième élément de commutation (34) prévu afin de relier le deuxième onduleur (28) au premier inducteur (10) affecté au premier onduleur (26).
  6. Dispositif d'appareil de cuisson selon au moins l'une des revendications 1 ou 2, caractérisé en ce que l'unité de commutation (30) est prévue afin de relier simultanément les onduleurs (26, 28) respectivement avec au maximum un des inducteurs (10, 12).
  7. Dispositif d'appareil de cuisson selon au moins la revendication 3, caractérisé par une unité de commande (36) prévue dans au moins un mode d'exploitation afin de fermer simultanément l'unité de commutation (18) pour la liaison des capacités (14, 16) et l'unité de commutation (30) pour la liaison des onduleurs (26, 28).
  8. Appareil de cuisson, en particulier appareil de cuisson à induction, avec un dispositif d'appareil de cuisson selon l'une des revendications précédentes.
  9. Procédé d'exploitation d'un dispositif d'appareil de cuisson selon l'une des revendications 1 à 8, dans lequel les capacités (14, 16) des différents inducteurs (10, 12) du dispositif d'appareil de cuisson sont reliées l'une à l'autre dans au moins un mode d'exploitation, et dans lequel les capacités (14, 16) sont commutées en parallèle dans une position de commutation.
EP10810979.4A 2009-12-28 2010-12-15 Système d'appareil de cuisson Active EP2520131B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ES200931274A ES2384919B1 (es) 2009-12-28 2009-12-28 Dispositivo de aparato de cocción.
PCT/IB2010/055830 WO2011080642A1 (fr) 2009-12-28 2010-12-15 Système d'appareil de cuisson

Publications (2)

Publication Number Publication Date
EP2520131A1 EP2520131A1 (fr) 2012-11-07
EP2520131B1 true EP2520131B1 (fr) 2017-03-08

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP10810979.4A Active EP2520131B1 (fr) 2009-12-28 2010-12-15 Système d'appareil de cuisson

Country Status (3)

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EP (1) EP2520131B1 (fr)
ES (1) ES2384919B1 (fr)
WO (1) WO2011080642A1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2453714A1 (fr) * 2010-11-10 2012-05-16 BSH Bosch und Siemens Hausgeräte GmbH Dispositif de chauffage à induction
CN103548416B (zh) * 2011-03-30 2016-09-07 Bsh家用电器有限公司 感应加热装置及其运行方法和带感应加热装置的家用器具
CN103891400B (zh) * 2011-11-04 2016-03-30 Bsh家用电器有限公司 感应加热装置
ES2423237B1 (es) * 2011-11-04 2014-08-08 BSH Electrodomésticos España S.A. Dispositivo de aparato doméstico con unidades rectificadoras
KR102071957B1 (ko) * 2018-04-19 2020-01-31 엘지전자 주식회사 제어 알고리즘 및 회로 구조가 개선된 유도 가열 장치
KR102082507B1 (ko) 2018-05-16 2020-02-27 엘지전자 주식회사 제어 알고리즘 및 회로 구조가 개선된 유도 가열 장치

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1446737A (en) * 1972-11-15 1976-08-18 Matsushita Electric Ind Co Ltd Induction cooking appliances
FR2839605B1 (fr) * 2002-05-07 2004-09-10 Elka Module de cuisson electrique a induction et procede de commande du module
ES2201937B1 (es) * 2003-11-03 2005-02-01 Bsh Electrodomesticos España, S.A. Procedimiento para el funcionamiento de un circuito convertidor.
ES2300168B1 (es) * 2005-10-27 2009-05-08 Bsh Electrodomesticos España, S.A. Encimera de cocina y procedimiento para el funcionamiento de una encimera de cocina.

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
EP2520131A1 (fr) 2012-11-07
ES2384919B1 (es) 2013-05-20
WO2011080642A1 (fr) 2011-07-07
ES2384919A1 (es) 2012-07-16

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