EP2648476B1 - Dispositif de chauffage à induction - Google Patents

Dispositif de chauffage à induction Download PDF

Info

Publication number
EP2648476B1
EP2648476B1 EP13160666.7A EP13160666A EP2648476B1 EP 2648476 B1 EP2648476 B1 EP 2648476B1 EP 13160666 A EP13160666 A EP 13160666A EP 2648476 B1 EP2648476 B1 EP 2648476B1
Authority
EP
European Patent Office
Prior art keywords
unit
induction heating
rectifier
frequency
heating device
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
EP13160666.7A
Other languages
German (de)
English (en)
Other versions
EP2648476A1 (fr
Inventor
Pablo Jesus Hernandez Blasco
Sergio Llorente Gil
Oscar Lucia Gil
Arturo Mediano Heredia
Daniel Palacios Tomas
Hector Sarnago Andia
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
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 Hausgeraete GmbH filed Critical BSH Hausgeraete GmbH
Publication of EP2648476A1 publication Critical patent/EP2648476A1/fr
Application granted granted Critical
Publication of EP2648476B1 publication Critical patent/EP2648476B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

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

Definitions

  • the invention is based on an induction heating device according to the preamble of claim 1.
  • Such a device is made US Pat. No. 3,898,410 known.
  • Induction hobs are known whose inductors are operated via a rectifier unit formed by slow-recovery diodes.
  • the object of the invention is in particular to provide a generic device with improved high frequency capability and / or improved efficiency.
  • 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 cooking appliance induction heating device, advantageously induction hob device, with at least one rectifier unit which is intended to rectify the current of an electric energy source.
  • the object is achieved by an induction heating device according to claim 1.
  • claim 11 defines the operating method of the induction device.
  • the rectifier unit has at least one faster-recovering rectifier element, in particular at least two, advantageously at least three, preferably at least four, faster-recovery rectifier elements.
  • the at least one faster-recovering rectifier element differs from a freewheeling diode, in particular a rectifier element, which is connected in parallel with a switching element.
  • An "electric energy source” is to be understood in particular as meaning an energy source which has an electrical voltage of at least 50 V, in particular at least 100 V, advantageously at least 200 V, in particular an electrical AC voltage with a maximum frequency of 200 Hz, advantageously at most 60 Hz at most 50 Hz, and / or an electric current of in particular up to at least 5 A, advantageously at least 10 A, advantageously at least 15 A, in particular an alternating electrical current with a frequency of at most 200 Hz, advantageously at most 60 Hz, preferably at most 50 Hz, provides.
  • the electric energy source is at least one phase of a domestic power connection.
  • the rectifier unit is designed as a bridge rectifier.
  • the rectifier unit is provided to output a voltage applied to input contacts and / or a voltage supplied to the input contacts to output contacts.
  • a "rectifier element" is to be understood in particular as a single-pole electrical element which is provided with current flowing through at least up to a voltage of at least 300 V, advantageously at least 450 V, preferably at least 600 V, in only one direction.
  • the rectifier element is a diode. Two rectifier elements connected in the same direction in series or in parallel, between which a current path branches off, in particular in no operating state, should in particular be understood as a single rectifier element.
  • a “faster-recovering” rectifier element is understood to mean a rectifier element which has a reverse recovery time of a maximum of 100 ns, in particular a maximum of 50 ns, advantageously a maximum of 30 ns.
  • “provided” is meant in particular specially programmed, switched, designed and / or equipped understood.
  • a high-frequency capability of the rectifier unit can be achieved.
  • a high-frequency electric power source can be effectively used.
  • the induction heating device has at least one heating frequency unit which is provided to receive energy in at least one operating state via the rectifier unit and to supply at least one induction heating unit with a high-frequency alternating current.
  • the induction heating device has at least one induction heating unit.
  • An "induction heating unit” is to be understood in particular as a unit having at least one induction heating element. In particular, in an operating state in which the induction heating unit is supplied with high-frequency alternating current, all induction heating elements of the induction heating unit, preferably simultaneously, supplied with high-frequency alternating current.
  • an “induction heater” should in particular be understood to mean a heating element with at least one induction heating line, which is intended to pass through Induction effects, in particular induction of electric current and / or Ummagnetleitersemble, in one, preferably ferromagnetic, in particular metallic, heating means, in particular in a cooking utensil, in an oven wall and / or in a radiator, which is arranged in an oven to cause heating of the heating means.
  • the induction heating element is provided to transmit in at least one operating mode in which the induction heating is connected to a supply electronics, a power of at least 100 W, in particular at least 500 W, advantageously at least 1000 W, preferably at least 2000 W, in particular electrical energy into electromagnetic field energy, which is finally converted into heat in a suitable heating medium.
  • An "induction heating line” is to be understood as meaning, in particular, an electrical line which is intended to carry an electric current which is intended to induce induction effects in a suitable heating means.
  • the induction heating is as inductance, in particular as a coil, advantageously as a flat coil, preferably at least substantially in the form of a circular disc, alternatively in the form of an oval or a rectangle formed.
  • the induction heating line in particular with a coupled heating means, has an inductance of at least 1 nH, in particular at least 10 nH, advantageously at least 20 nH.
  • the induction heating line in particular without a coupled heating means, has an inductance of not more than 1000 nH, in particular not more than 100 nH, advantageously not more than 50 nH.
  • the induction heating is intended, at least in an operating state of high-frequency alternating current, in particular an alternating current having a frequency of at least 20 kHz, in particular at least 30 kHz, advantageously at least 50 kHz, preferably at least 60 kHz, in particular at most 500 kHz, in particular with a current strength of at least 0.5 A, in particular at least 1 A, advantageously at least 3 A, preferably at least 10 A, to be flowed through.
  • high-frequency alternating current in particular an alternating current having a frequency of at least 20 kHz, in particular at least 30 kHz, advantageously at least 50 kHz, preferably at least 60 kHz, in particular at most 500 kHz, in particular with a current strength of at least 0.5 A, in particular at least 1 A, advantageously at least 3 A, preferably at least 10 A, to be flowed through.
  • 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 20 kHz, in particular of at least 30 kHz, advantageously of at least 50 kHz, and in particular of not more than 500 kHz, for at least one Induced heating unit generates.
  • the Schufrequenzü is provided to at least one operating state, a DC voltage, a pulsating DC voltage and / or an AC voltage, in particular an AC voltage having a frequency of less than 200 Hz, in particular less than 60 Hz, advantageously less than 50 Hz, in a high-frequency To convert AC voltage.
  • the heating frequency unit is designed as an inverter.
  • the heating frequency unit has at least one, preferably at least two, switching elements.
  • the switching elements of switching elements with parallel rectifier element differ.
  • a “switching element” is to be understood in particular to mean an electronic element which is intended to produce and / or to separate an electrically conductive connection between two points, in particular contacts of the switching element
  • the switching element is designed as a semiconductor switching element, in particular as a transistor, advantageously as a bipolar transistor with preferably insulated gate electrode (IGBT)
  • the switching element is designed as a mechanical and / or electromechanical switching element, in particular as a relay
  • an efficient supply of the induction heating unit can be achieved.
  • the induction heating device has at least one resonance unit, which is provided to form at least one resonant subcircuit with an induction heating unit, and which is connected directly to the electric energy source in at least one operating state.
  • a "resonance unit” is to be understood in particular as a unit which comprises at least one resonance capacitance, which is preferably formed by at least one capacitor, which is preferably different from a damping capacity and / or a capacitance connected in parallel with a switching element.
  • a resonant capacitance is formed by a combination of series and parallel circuits of a plurality of capacitors.
  • a “resonant subcircuit” is to be understood, in particular, as part of a circuit in which at least one resonant capacitance of the resonant unit is connected in series and / or parallel to the induction heating unit.
  • a resonant frequency of the resonant subcircuit is at least 30 kHz, in particular at least 50 kHz, advantageously at least 70 kHz, preferably at least 100 kHz.
  • the resonance capacity is directly connected to the induction heating unit.
  • the at least one resonance subcircuit has at least one contact, which is directly connected to a common power contact of two switching elements of the heating frequency unit.
  • the at least one resonance capacitor is provided to be charged and / or discharged in at least one operating state, via at least one of the switching elements and the induction heating unit.
  • a "direct connection” is to be understood in particular as meaning an electrical connection which, at least in an operating state with a current flow of alternating current via the connection with a frequency between 1 kHz and 500 kHz, has an impedance which is smaller than its magnitude 10 V / A, in particular less than 1 V / A, preferably less than 0.1 V / A, and whose amount in particular over a frequency range from 1 kHz to 500 kHz by a maximum of 100%, in particular a maximum of 40%, advantageously a maximum 10%, and preferably at most 3%, varies.
  • An “impedance” should be understood in particular to mean a division of an effective voltage by an effective current of the electrical connection.
  • external contacts of the resonance unit are connected directly to contacts of the electric power source.
  • An “external contact” of the resonance unit should in particular be understood as a contact which is directly connected to exactly one resonance capacity of the resonance unit. In particular, an effective operation can be achieved.
  • the induction heating device has at least one induction heating unit which is connected at least in the manner of a half bridge.
  • half-bridge type should in particular be understood to mean that at least the induction heating unit is connected in a bridge branch between a common contact of two switching elements of the heating frequency unit and a common contact of two resonance capacitances of the resonance unit.
  • a common contact of two electrical elements is to be understood in particular as a contact which is directly connected to both electrical elements. In particular, an effective operation can be achieved.
  • the induction heating device has at least one resonance unit which has at least one external contact which is electrically conductively connected in at least one direction to at least one switching element of the heating frequency unit via at least one rectifier element, the connection being different from a connection having an electrical connection Component of the resonance unit has.
  • the external contact is over at least one another rectifier element electrically conductively connected in at least one direction with another switching element of the heating frequency unit.
  • the resonance unit has at least one further external contact, which is electrically conductively connected to at least one switching element of the heating frequency unit via at least one further rectifier element in at least one direction.
  • each resonant circuit has at least one, in particular exactly one rectifier element.
  • a "resonant circuit” is to be understood, in particular, as a closed electrical subcircuit, which in at least one operating state can be traversed by current in at least one direction and which has at least the induction heating unit and at least one resonant capacitance.
  • a subcircuit is to be understood, in particular, as an unbranched path along elements of an electrical circuit.
  • the rectifier element is a rectifier element of the rectifier unit, whereby a part savings can be achieved. It can, in particular by reducing and / or avoiding return currents, in particular resonant reverse currents, switching losses are minimized, whereby an efficiency of the induction heater can be increased.
  • the choice of rectifier elements according to the invention as an advantage faster recovering rectifier elements advantageous.
  • At most one rectifier element of the rectifier unit in particular at most one rectifier element of the induction heater, is simultaneously conducting.
  • a rectifier element is "conductive" should be understood in particular that it is from a current, in particular a current of at least 0.01 A, in particular at least 0.1 A, preferably at least 1 A, flows through.
  • a higher efficiency can be achieved because power losses can be avoided by additional components.
  • the induction heating device has at least one buffer capacity, which is connected directly to the electric power source, in particular this is connected in parallel.
  • an improved power factor can be achieved.
  • current peaks can be intercepted.
  • the induction heating device has at least one control unit which is provided to operate the heating frequency unit in at least one operating mode with a frequency that is smaller than a resonance frequency, which is given by an induction heating unit and a resonance unit.
  • the control unit is provided to generate high-frequency switching signals and thus to control the at least one switching contact of the at least one switching element of the heating frequency unit.
  • the control unit is provided to set a heating power of the induction heating unit as a function of an operator input.
  • the control unit has at least one arithmetic unit and preferably at least one memory unit in which, in particular, an operating program is stored which is executed by the arithmetic unit at least in an operating state. In particular, a simpler control can be achieved. In particular, an at least substantially linear frequency power dependency can be achieved.
  • a domestic appliance in particular cooking appliance, advantageously oven and / or hob, proposed with an induction heating according to the invention.
  • FIG. 1 shows a cooking appliance designed as a domestic appliance 10.
  • the domestic appliance 10 has four induction heating units 20, 22, 24, 26.
  • the induction heating units 20, 22, 24, 26 are designed as cooktop inductors, which are arranged under a cooktop panel.
  • the domestic appliance 10 has a power electronics unit 14, which is provided to supply the induction heating units 20, 22, 24, 26 with energy.
  • the power electronics unit 14 and the induction heating units 20, 22, 24, 26 are part of induction heaters 12.
  • FIG. 2 shows an induction heating device 12 with the induction heating unit 20.
  • the induction heating device 12 comprises a rectifier unit 30.
  • the induction heating unit 20 is hereby represented by a series connection of a coil and a resistor, which stands for an electric power decrease by a cooking utensil.
  • the induction heating device 12 has a heating frequency unit 50, which is provided to supply the induction heating unit 20 with high-frequency alternating current in various operating modes.
  • the rectifier unit 30 has four faster-recovery rectifier elements 32, 34, 36, 38.
  • the rectifier unit 30 is provided to rectify voltage and current of an electric power source 18, which are applied to input contacts 42 and 44 of the rectifier unit 30, and to supply a heating frequency unit 50.
  • the heating frequency unit 50 is provided to receive energy in the one operating state via the rectifier unit 30.
  • the rectifier elements 32, 34, 36, 38 are formed as diodes.
  • the induction heating device 12 has a buffer capacity 40 which is connected between the input contacts 42, 44 of the rectifier unit 30 and is thus connected directly to the electric power source 18. Furthermore, the rectifier unit 30 has two output contacts 56, 57, to which the heating frequency unit 50 is directly connected.
  • a first rectifier element 32 connects a first input contact 42 of the rectifier unit 30 to a first output contact 56 of the rectifier unit 30, so that a current flow to the first output contact 56 is possible.
  • a second rectifier element 34 connects a second output contact 57 of the rectifier unit 30 to a second input contact 44 of the rectifier unit 30, so that a current flow to the second input contact 44 is possible.
  • a third rectifier element 36 connects the second input contact 44 to the first output contact 56, so that a current flow to the first output contact 56 is possible.
  • a fourth rectifier element 38 connects the second output contact 57 to the first input contact 42, so that a current flow to the first input contact 42 is possible.
  • the heating frequency unit 50 is formed by two switching elements 52, 53.
  • the switching elements 52, 53 are designed as IGBTs.
  • a first switching element 52 of the heating frequency unit 50 has an input contact, which is connected directly to the first output contact 56 of the rectifier unit 30.
  • a second switching element 53 of the heating frequency unit 50 has an output contact which is directly connected to the second output contact 57 of the rectifier unit 30.
  • the first switching element 52 has an output contact which is directly connected to an input contact of the second switching element 53 via a common contact 51.
  • the induction heating device 12 has a resonance unit 60, which is provided to form two resonance subcircuits with the induction heating unit 20.
  • the resonance unit 60 has two resonance capacitances 62, 64.
  • a first resonance capacitance 62 and a second resonance capacitance 64 each form, with the induction heating unit 20, a resonant pitch circuit having a same resonance frequency.
  • the resonant frequency takes on a value between 20 kHz and 100 kHz depending on a used cooking utensil which influences an inductance of the induction heating unit 20.
  • the two resonance capacitances 62, 64 are connected directly to one another via a common contact 61.
  • the first resonant capacitance 62 has a further contact, which forms a first external contact 63 of the resonance unit 60.
  • the second resonant capacitance 64 has a further contact, which forms a second external contact 65 of the resonance unit 60.
  • the first external contact 63 is connected directly to the second input contact 44 of the rectifier unit 30 and thus to the electric power source 18.
  • the second external contact 65 is connected directly to the first input contact 42 of the rectifier unit 30 and thus to the electric power source 18.
  • the resonance unit 60 is directly connected to the electric power source 18 in an operating state.
  • the induction heating unit 20 is connected in a half-bridge manner.
  • the induction heating unit 20 is disposed in a bridge branch between the common contacts 51, 61 of the heating frequency unit 50 and the resonance unit 60.
  • the first external contact 63 is electrically conductively connected via the rectifier element 36 to the first output contact 56 and thus to the first switching element 52. Furthermore, the first external contact 63 is electrically conductively connected via the rectifier element 34 to the second output contact 57 and thus to the second switching element 53.
  • the second external contact 65 is electrically conductively connected via the rectifier element 32 to the first output contact 56 and thus to the first switching element 52. Furthermore, the second external contact 65 is electrically conductively connected via the rectifier element 38 to the second output contact 57 and thus to the second switching element 53. In each resonant circuit exactly one rectifier element 32, 34, 36, 38 of the rectifier unit 30 is arranged.
  • the induction heating device 12 has a control unit 16 which is provided to operate the heating frequency unit 50 in different operating modes, for example at different requested heating powers, at a frequency which is lower than the resonance frequency given by the induction heating unit 20 and the resonance unit 60 is.
  • the switching elements 52, 53 each have a control contact 54, 55.
  • the control unit 16 is provided to control the control contacts 54, 55 of the switching elements 52, 53 separately with a respective Anberichtcher S 1 , S 2 , for example, a switching current or a switching voltage to change switching states of the switching elements 52, 53, ie between a Change line state and a disconnected state.
  • the control unit 16 is provided to operate the heating frequency unit 50 and the switching elements 52, 53 in each operation mode at a frequency smaller than the resonance frequency given by the induction heating unit 20 and the resonance unit 60.
  • each regular operating mode in which at most one of the switching elements 52, 53 is opened at the same time, at most one of the rectifier elements 32, 34, 36, 38 of the rectifier unit 30 conducts simultaneously.
  • a first operating state in which a positive voltage is applied to the first input contact 42 of the rectifier unit 30 and the first switching element 52 is in a conduction state, the first rectifier element 32 conducts at most.
  • a second operating state in which at the first input contact 42 of the rectifier unit 30 is a positive voltage and the second switching element 53 is in a conduction state, the maximum directs the second rectifier element 34.
  • FIG. 3 shows the course of various characteristics S 1 , S 2 , U 1 , U 2 , I 1 , I 2 , I L of the induction heater 12 in a plurality of superimposed diagrams in response to a time t for a single control cycle in the case of a positive voltage at the first input contact 42.
  • the control cycles are repeated periodically.
  • a first control characteristic S 1 of the first switching element 52 is shown, in dependence of which the switching state of the first switching element 52 changes.
  • a first voltage U 1 is shown, which drops above the first switching element 52, measured from the first output contact 56 to the common contact 51.
  • a first current I 1 is shown flowing through the first switching element 52 from the output contact 56 to the common contact 51.
  • a second control characteristic S 2 of the second switching element 53 is shown, in dependence of which the switching state of the second switching element 53 changes.
  • a second voltage U 2 is shown, which drops across the second switching element 53, measured from the common contact 51 to the second output contact 57.
  • a second current I 2 is shown, which flows through the second switching element 53 from the common contact 51 to the second output contact 57.
  • a power current I L is shown, which flows from the common contact 51 of the switching elements 52, 53 to the common contact 61 of the resonance capacitances 62, 64.
  • the first switching element 52 is placed in the line state after the second switching element 53 has been set to the disconnected state by resetting the second control characteristic S 2 to zero.
  • the second resonant capacitance 64 then discharges via the first rectifier element 32, the first switching element 52 and the induction heating unit 20. Further, rectified current from the first output contact 56 via the first switching element 52 and the induction heating unit 20 charges the first resonant capacitance 62.
  • the induction heating unit 20 initially delays one Increase of the first current I 1 . Above the first switching element 52 is a voltage of almost 0V. Accordingly, a voltage supplied from the rectifier unit 30 drops across the second switching element 53, which is in the disconnected state.
  • the power current I L corresponds to the first current I 1 .
  • the power current I L comes to a stop by the induction heating unit 20.
  • a reciprocal of twice the time difference t 1 -t 0 corresponds to the natural frequency of the resonant subcircuits.
  • the second resonance capacitance 64 was partially charged with a back voltage, and the first resonance capacitance 62 was charged beyond the voltage supplied by the rectifier unit 30 with an overvoltage.
  • the counter voltage is applied to the first rectifier element 32 from the time t 1 backwards.
  • the overvoltage starts at time t 1 as the second voltage U 2 at the second switching element 53.
  • a second time t 2 analogously to the starting time t 0 , by setting the second control characteristic S 2 to the switching value, the second switching element 53 is placed in the line state, after resetting the first control characteristic S 1 to zero, the first switching element 52 in the disconnected state was shifted.
  • a reciprocal of twice the time difference t 2 -t 0 corresponds to the frequency with which the heating frequency unit 50 is operated.
  • the first resonance capacitance 62 then discharges via the second switching element 53, the induction heating unit 20 and the second rectifier element 34.
  • Above the second switching element 53 is a voltage of almost 0V.
  • the power current I L corresponds to a negative of the second current I 2 .
  • the power current I L comes to a stop by the induction heating unit 20.
  • the first resonance capacitance 62 was partially charged with a reverse voltage and the second resonance capacitance 64 was charged across the voltage also supplied from the rectifier unit 30 is charged with an overvoltage.
  • the counter voltage is applied to the second rectifier element 34 from time t 3 onwards.
  • the overvoltage starts at time t 3 as the first voltage U 1 at the first switching element 52.
  • a new cycle begins as from the start time t 0 .
  • a reciprocal of the difference t 4 - t 0 corresponds to the frequency with which the heating frequency unit 50 is driven.
  • a distance t 2 - t 1 or t 4 - t 3 in which no power is converted, changed.
  • the power of the induction heating unit 20 can be changed in linear dependence on the frequency as long as the frequency is smaller than the resonance frequency, with a reduction in the frequency corresponding to a reduction in power. This is ensured by the control unit 16 and current sensors (not shown in detail). Since the currents I 1 , I 2 , I L are zero at the times t 0 , t 2 , t 4 , switching losses in the switching elements 52, 53 are avoided.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • General Induction Heating (AREA)

Claims (10)

  1. Dispositif de chauffe à induction, en particulier dispositif de champ de cuisson à induction, avec au moins une unité de redresseur (30), prévue afin de redresser de l'électricité d'une source d'énergie électrique (18), dans lequel l'unité de redresseur (30) présente au moins un élément de redresseur à récupération rapide (32, 34, 36, 38), qui présente un temps de récupération inverse maximal de 100 ns, l'élément de redresseur (32, 34, 36, 38) étant une diode, caractérisé en ce que dans au moins un mode d'exploitation au maximum un élément de redresseur (32, 34, 36, 38) de l'unité de redresseur (30) est simultanément conducteur.
  2. Dispositif de chauffe à induction selon l'une des revendications précédentes, caractérisé par au moins une unité de fréquence de chauffe (50), prévue afin de prélever de l'énergie via l'unité de redresseur (30) et d'alimenter au moins une unité de chauffe à induction (20, 22, 24, 26) en courant alternatif à haute fréquence dans au moins un état de fonctionnement.
  3. Dispositif de chauffe à induction selon l'une des revendications précédentes, caractérisé par au moins une unité de résonance (60) prévue afin de constituer au moins un circuit résonnant partiel avec une unité de chauffe à induction (20, 22, 24, 26), et directement reliée à la source d'énergie électrique (18) dans au moins un état de fonctionnement.
  4. Dispositif de chauffe à induction selon l'une des revendications précédentes, caractérisé par au moins une unité de chauffe à induction (20, 22, 24, 26) câblée au moins à la manière d'un demi-pont.
  5. Dispositif de chauffe à induction, au moins selon la revendication 2, caractérisé par au moins une unité de résonance (60), qui présente au moins un contact extérieur (63, 65), lequel est relié de manière électriquement conductrice à au moins un élément de commutation (52, 53) de l'unité de fréquence de chauffe (50) via au moins un élément de redresseur (32, 34, 36, 38) dans au moins une direction.
  6. Dispositif de chauffe à induction selon la revendication 5, caractérisé en ce que l'élément de redresseur (32, 34, 36, 38) est un élément de redresseur (32, 34, 36, 38) de l'unité de redresseur (30).
  7. Dispositif de chauffe à induction selon l'une des revendications précédentes, caractérisé par au moins une capacité de tampon (40) reliée directement avec la source d'énergie électrique (18) dans au moins un état de fonctionnement.
  8. Dispositif de chauffe à induction au moins selon la revendication 2, caractérisé par au moins une unité de commande (16) prévue afin d'exploiter dans au moins un mode d'exploitation l'unité de fréquence de chauffe (50) selon une fréquence inférieure à une fréquence de résonance donnée par une unité de chauffe à induction (20, 22, 24, 26) et une unité de résonance (60).
  9. Appareil ménager, en particulier appareil de cuisson, avec au moins un dispositif de chauffe à induction (12) selon l'une des revendications précédentes.
  10. Procédé d'exploitation d'un dispositif de chauffe à induction (12) selon l'une des revendications 1 à 8, avec au moins une unité de redresseur (30), dans lequel de l'électricité d'une source d'énergie électrique (18) est redressée par l'unité de redresseur (30), l'unité de redresseur (30) présentant au moins un élément de redresseur à récupération rapide (32, 34, 36, 38), lequel présente un temps de récupération inverse maximal de 100 ns, l'élément de redresseur (32, 34, 36, 38) étant une diode, caractérisé en ce que dans au moins un mode d'exploitation au maximum un élément de redresseur (32, 34, 36, 38) de l'unité de redresseur (30) est simultanément conducteur.
EP13160666.7A 2012-04-02 2013-03-22 Dispositif de chauffage à induction Active EP2648476B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ES201230499 2012-04-02

Publications (2)

Publication Number Publication Date
EP2648476A1 EP2648476A1 (fr) 2013-10-09
EP2648476B1 true EP2648476B1 (fr) 2016-05-25

Family

ID=48040003

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13160666.7A Active EP2648476B1 (fr) 2012-04-02 2013-03-22 Dispositif de chauffage à induction

Country Status (1)

Country Link
EP (1) EP2648476B1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015221068A1 (de) 2015-10-28 2017-05-04 BSH Hausgeräte GmbH Hausgeräteheizvorrichtung

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3898410A (en) * 1972-06-16 1975-08-05 Environment One Corp AC to RF converter circuit for induction cooking unit

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3814888A (en) * 1971-11-19 1974-06-04 Gen Electric Solid state induction cooking appliance
DE4224405A1 (de) * 1992-03-14 1993-09-16 Ego Elektro Blanc & Fischer Induktive kochstellenbeheizung
KR100750546B1 (ko) * 2002-06-26 2007-08-20 미쯔이 죠센 가부시키가이샤 유도 가열 방법 및 장치
KR20090057495A (ko) * 2007-12-03 2009-06-08 삼성전자주식회사 유도가열조리기 및 그 제어방법
FR2954661A1 (fr) * 2009-12-23 2011-06-24 Jaeger Inducteurs sur phases equilibrees

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3898410A (en) * 1972-06-16 1975-08-05 Environment One Corp AC to RF converter circuit for induction cooking unit

Also Published As

Publication number Publication date
EP2648476A1 (fr) 2013-10-09

Similar Documents

Publication Publication Date Title
EP1931177B1 (fr) Circuit de dispositif de chauffage
EP2888925B1 (fr) Appareil électroménager
EP2744299A1 (fr) Dispositif domestique de chauffage par induction
DE102012220324A1 (de) Induktionsheizvorrichtung
WO2014091389A1 (fr) Composant de commutation, en particulier composant de commutation pour un appareil ménager
EP2692202B1 (fr) Dispositif de chauffage par induction
EP2384083A1 (fr) Agencement de commutation pour un appareil de cuisson à induction, procédé de fonctionnement d'un agencement de commutation et appareil de cuisson à induction
EP2648476B1 (fr) Dispositif de chauffage à induction
EP2506673B1 (fr) Plaque de cuisson a induction
EP2515608B1 (fr) Dispositif d'appareil ménager
EP2582201B1 (fr) Dispositif de chauffage à induction
EP3066888A1 (fr) Dispositif table de cuisson à induction
DE102013205746A1 (de) Induktionsheizvorrichtung
DE102013207786A1 (de) Hausgeräteinduktionsheizvorrichtung
EP2506667B1 (fr) Dispositif de chauffage à induction
EP2706817B1 (fr) Plaque de cuisson
EP2774456B1 (fr) Dispositif de chauffage par induction
EP2506670B1 (fr) Dispositif de chauffage à induction
EP2380394B1 (fr) Plaque de cuisson à induction comprenant au moins un onduleur
EP2214454B1 (fr) Champ de cuisson à induction doté de plusieurs inducteurs
EP2692203B1 (fr) Dispositif de chauffage par induction
DE102012206940A1 (de) Induktionsheizvorrichtung
DE112015001830T5 (de) Induktions-Heizeinrichtung
WO2016071824A1 (fr) Dispositif pour appareil de cuisson
DE102014220047A1 (de) Gargerätevorrichtung

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

17P Request for examination filed

Effective date: 20140409

RBV Designated contracting states (corrected)

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: BSH HAUSGERAETE GMBH

17Q First examination report despatched

Effective date: 20150806

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

INTG Intention to grant announced

Effective date: 20160107

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: LANGUAGE OF EP DOCUMENT: GERMAN

Ref country code: AT

Ref legal event code: REF

Ref document number: 803247

Country of ref document: AT

Kind code of ref document: T

Effective date: 20160615

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 502013003100

Country of ref document: DE

REG Reference to a national code

Ref country code: LT

Ref legal event code: MG4D

REG Reference to a national code

Ref country code: NL

Ref legal event code: MP

Effective date: 20160525

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160525

Ref country code: LT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160525

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160525

Ref country code: NO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160825

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LV

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160525

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160926

Ref country code: RS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160525

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160525

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160525

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160525

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160525

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160525

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160525

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160525

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160525

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SM

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160525

Ref country code: PL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160525

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 502013003100

Country of ref document: DE

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20170228

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160525

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20170322

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160525

REG Reference to a national code

Ref country code: IE

Ref legal event code: MM4A

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20171130

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20170322

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20170331

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20170322

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20170331

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20170322

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20170331

REG Reference to a national code

Ref country code: BE

Ref legal event code: MM

Effective date: 20170331

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20170331

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160525

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160525

REG Reference to a national code

Ref country code: AT

Ref legal event code: MM01

Ref document number: 803247

Country of ref document: AT

Kind code of ref document: T

Effective date: 20180322

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: HU

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT; INVALID AB INITIO

Effective date: 20130322

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160525

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CY

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20160525

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20180322

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160525

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: TR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160525

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160525

Ref country code: HR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160525

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160925

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20240331

Year of fee payment: 12