EP3556180B1 - Appareil électroménager - Google Patents

Appareil électroménager Download PDF

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Publication number
EP3556180B1
EP3556180B1 EP17822459.8A EP17822459A EP3556180B1 EP 3556180 B1 EP3556180 B1 EP 3556180B1 EP 17822459 A EP17822459 A EP 17822459A EP 3556180 B1 EP3556180 B1 EP 3556180B1
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EP
European Patent Office
Prior art keywords
household appliance
switching elements
appliance device
row
column
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
EP17822459.8A
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German (de)
English (en)
Other versions
EP3556180A1 (fr
Inventor
José Miguel Burdio Pinilla
Tomas Cabeza Gozalo
Sergio Llorente Gil
Oscar Lucia Gil
Ignacio Millan Serrano
Alejandro NAVAL PALLARES
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
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BSH Hausgeraete GmbH
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Publication of EP3556180A1 publication Critical patent/EP3556180A1/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
    • H05B6/065—Control, e.g. of temperature, of power for cooking plates or the like using coordinated control of multiple induction coils
    • 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
    • H05B1/00—Details of electric heating devices
    • H05B1/02—Automatic switching arrangements specially adapted to apparatus ; Control of heating devices
    • H05B1/0202—Switches
    • 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
    • H05B2213/00—Aspects relating both to resistive heating and to induction heating, covered by H05B3/00 and H05B6/00
    • H05B2213/03—Heating plates made out of a matrix of heating elements that can define heating areas adapted to cookware randomly placed on the heating plate
    • 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
    • H05B2213/00—Aspects relating both to resistive heating and to induction heating, covered by H05B3/00 and H05B6/00
    • H05B2213/05—Heating plates with pan detection means

Definitions

  • the invention relates to a household appliance device, in particular a cooking device device according to the preamble of claim 1.
  • a household appliance device with at least one inverter unit in a half-bridge or full-bridge circuit for operating several inductors by means of a multiplexer is already known from the prior art.
  • the document EP 0 862 714 B1 discloses a household appliance device according to the preamble of claim 1.
  • the object of the invention is in particular to provide a device of the generic type with improved properties with regard to efficiency.
  • the object is achieved according to the invention by the features of claim 1, while advantageous configurations and developments of the invention can be found in the subclaims.
  • a household appliance device in particular a cooking device device and preferably a hob device, is proposed with at least a number N of row switching elements, with at least a number M of column switching elements and with at least one heating matrix, which has at least one, in particular exactly one, number NxM of heating matrix elements, where for any i from 1 to N and any j from 1 to M with a total number N + M of column switching elements and row switching elements greater than 2, the i, j th heating matrix element is at least one, preferably exactly one, i, j th Comprises inductor and is connected to both the i-th row switching element and the j-th column switching element, and with at least one switching diode, which connects at least one of the row switching elements or at least one of the column switching elements to at least one reference potential.
  • a “household appliance device” should be understood to mean in particular at least a part, preferably at least one subassembly, of a household appliance.
  • the household appliance device can also include the entire household appliance.
  • the household appliance is in particular as a cooking device, preferably as a microwave, an oven and / or a, in particular variable, hob, in particular a matrix hob, and particularly preferably as a inductive cooking appliance, such as in particular an induction oven and / or preferably an induction hob, in particular a matrix induction hob.
  • a “cooking appliance device” is to be understood in particular as a household appliance device which at least partially forms a cooking appliance.
  • a "variable hob” is to be understood in particular as a hob in which inductors are arranged, in particular in a regular spatial arrangement, in particular under a hob plate of the household appliance device, and at least partially form at least one heating zone, preferably several variable heating zones, which preferably comprises a region of the hob plate of at least 10%, preferably of at least 30% and particularly advantageously of at least 40% of a total area of the hob plate.
  • the inductors are provided for the purpose of forming the heating zone and adapting it to the cooking utensil as a function of a position of cooking utensils positioned on the hob plate.
  • “Provided” is to be understood in particular as specifically programmed, designed and / or equipped.
  • an object is provided for a specific function should be understood in particular to mean that the object fulfills and / or executes this specific function in at least one application and / or operating state.
  • a “number” should be understood to mean any number from the set of natural numbers. In particular, it should always apply that the total number N + M of column switching elements and row switching elements is greater than 2 if the number N of row switching elements and / or the number M of column switching elements is greater than 1.
  • a “row switching element” and / or a “column switching element” should be understood to mean in particular switching elements which rows and / or columns of a grid are assigned to and / or define a circuit diagram arrangement.
  • the circuit arrangement is in particular different from a spatial arrangement in which the column switching elements and row switching elements can be arranged in a particularly compact arrangement preferred by a person skilled in the art.
  • the row switching elements are in particular connected to a reference potential common to the row switching elements.
  • the reference potential common to the line switching elements is in particular an operating potential of an operating voltage with which the household appliance device is operated.
  • the reference potential common to the line switching elements is in particular a ground potential.
  • the column switching elements are in particular with connected to a further reference potential common to the column switching elements.
  • the further reference potential common to the column switching elements is in particular a further operating potential of the operating voltage.
  • the further reference potential common to the column switching elements is in particular different from a ground potential.
  • an operating voltage is applied between the reference potential common to the row switching elements and the further reference potential common to the column switching elements.
  • a “switching element” is to be understood as meaning in particular an element which is provided to connect a first connection to at least one second connection in an electrically conductive manner in at least one first switching state and the first connection to the second connection in at least one second switching state to separate.
  • the switching element has in particular at least one control connection via which the switching state of the switching element can be controlled.
  • the switching element is provided in particular to transition from one of the switching states to the other switching state in a switching process.
  • the switching element can be designed as any switching element, preferably a semiconductor switching element, that appears sensible to a person skilled in the art, such as a transistor, preferably an FET, a MOSFET and / or an IGBT, preferably an RC-IGBT and particularly preferably a HEMT Transistor.
  • a “HEMT transistor” is to be understood in particular as a high electron mobility transistor, in particular with a particularly high electron mobility, which is particularly preferred at 25 ° C., in particular at least 400 cm 2 V -1 s -1 is at least 600 cm 2 V -1 s -1 , more preferably at least 800 cm 2 V -1 s -1 and particularly preferably at least 1000 cm 2 V -1 s -1 .
  • the switching element has at least one first connection, which is preferably a source connection, a second connection, which is preferably a drain connection, and / or a control connection, which is in particular a gate connection.
  • at least one diode, in particular a feedback diode, and / or at least one capacitance, in particular a damping capacitance, of the household appliance device can be connected in parallel to the switching element.
  • At least one i-th row switching element and at least one j-th column switching element which are shown in particular in a full-bridge topology or preferably a half-bridge topology are used in particular as inverter switching elements and together form at least partially, preferably completely, an i, j-th inverter unit of the household appliance device.
  • the household appliance device comprises, in particular, a number N ⁇ M of inverter units.
  • An "i, j-th inverter unit” is to be understood as meaning, in particular, a unit which is provided to supply a high-frequency heating current, preferably with a frequency of at least 1 kHz, in particular of at least 10 kHz and advantageously of at least 20 kHz, in particular at a Operation of the i, j-th inductor, to provide and / or to generate.
  • the household appliance device has, in particular, a control unit which is provided for controlling the row switching elements and the column switching elements.
  • a “control unit” is to be understood in particular as an electronic unit which is preferably at least partially integrated in a control and / or regulating unit of a household appliance.
  • the control unit preferably comprises a computing unit and, in particular, in addition to the computing unit, a memory unit with a control and / or regulating program stored therein, which is provided to be executed by the computing unit.
  • the control unit is particularly advantageously provided to control the row switching elements and the column switching elements as inverter switching elements, in particular in such a way that a smooth switching process occurs between at least a first switching state and a second switching state of the switching elements.
  • a “soft switching process” is to be understood as meaning, in particular, a switching process with a negligibly low power loss, which occurs in particular when the switching process is preferably at least substantially free of voltage.
  • the control unit is provided to switch the switching elements in an at least substantially voltage-free switching process with a switching frequency which is greater than a resonance frequency of the i, j-th heating matrix element.
  • a “vanishingly low value” is to be understood in particular as a value that is in particular at least a factor of 10, preferably at least a factor 50, preferably at least a factor 100 and particularly preferably at least a factor 500 less than an operating maximum value.
  • a “heating matrix” is to be understood in particular as a grid of a circuit diagram arrangement of i, j-th heating matrix elements. The i, j-th heating matrix element is in particular connected at least indirectly and preferably directly to both the i-th row switching element and the j-th column switching element.
  • the i, j-th inductor has at least one, in particular exactly one i, j-th connection, which is connected both to the i-th row switching element, in particular to a first connection of the i-th row switching element, and to the j- th column switching element, in particular with a second connection of the j-th column switching element.
  • An “inductor” is to be understood in particular as an electrical component which, in at least one cooking operating state, is provided to inductively heat at least one cookware that is positioned on the hob plate of the household appliance device.
  • the inductor comprises at least one, preferably in the form of a circular disk, wound electrical conductor through which a high-frequency heating current flows in at least the cooking operating state.
  • the inductor is preferably provided to convert electrical energy into an alternating magnetic field in order to cause eddy currents and / or magnetic reversal effects in the cookware, which are converted into heat.
  • a household appliance device with improved properties with regard to efficiency, in particular cost efficiency and / or energy efficiency, can advantageously be provided by a corresponding configuration.
  • a particularly soft and thus energy-efficient switching process can advantageously be achieved.
  • a number of switching elements can be reduced, since switching elements partially operate several inductors, whereby component costs can be saved.
  • different inductors of the heating matrix can be controlled individually, thereby reducing energy consumption and in particular, a stray electrical field can be reduced.
  • the above-mentioned arrangement particularly advantageously enables the switching elements to be switched softly, specifically in particular at least essentially free of voltage, as a result of which switching losses can be reduced.
  • an advantageous detection of cookware can be made possible, additional components, such as sensor elements, can be avoided.
  • the inductors are spatially arranged in an inductor matrix which, with regard to a proximity ratio of at least two of the inductors, is relatively is different to one another from the heating matrix in which the inductors are arranged in a circuit diagram.
  • An "inductor matrix” is to be understood in particular as a grid of a spatial arrangement of the inductors below a hob plate of the household appliance device.
  • a “different proximity ratio” is to be understood in particular to mean that nearest neighbors of i, j-th inductors in the inductor matrix are not nearest neighbors of i, j-th inductors in the heating matrix.
  • An “i, j-th inductor for which i ⁇ j applies in the heating matrix” is to be understood in particular as an off-diagonal inductor which is arranged outside a diagonal of the heating matrix.
  • in the inductor matrix i, j-th inductors of the same i or the same j are adjacent to one another and preferably directly adjacent to one another.
  • the i, j-th inductors of the same i or the same j are arranged in the same row or column of the heating matrix.
  • the total number N + M of column switching elements and row switching elements is less than or equal to the number N ⁇ M of heating matrix elements.
  • the number N of column switching elements is equal to the number M of row switching elements.
  • the heating matrix is then designed as a square matrix.
  • the total number N + M of column switching elements and row switching elements is one greater than the number N ⁇ M of heating matrix elements.
  • the heating matrix is designed in particular as a vector, preferably a row vector, in particular if the number N of row switching elements is 1, or as a column vector, in particular if the number M of column switching elements is 1.
  • the i, j-th heating matrix element have at least one ij-th diode, by means of which the i, j-th inductor at least with the i-th Line switch element is connected.
  • the i, j-th diode is connected to the i, j-th connection between the i, j-th inductor and the i-th row switching element.
  • the i, j-th diode allows in particular a current flow in the direction of the i-th row switching element and preferably blocks a current flow in the direction of the i, j-th inductor.
  • the i, j-th diode can be dispensed with.
  • a flyback diode and / or a damping capacitor of the household appliance device could be connected in parallel to the j-th column switching element.
  • the i, j-th heating matrix element further advantageously has at least one i, j-th further diode, by means of which the i, j-th inductor is connected at least to the j-th column switching element.
  • the i, j-th further diode is connected to the i, j-th connection between the i, j-th inductor and the j-th column switching element.
  • the i, j-th diode allows in particular a current flow in the direction of the i, j-th inductor and preferably blocks a current flow in the direction of the j-th column switching element. Furthermore, in the event that the number M of column switching elements is equal to 1, the further i, j-th diode can be dispensed with. In addition, a flyback diode and / or a damping capacitor could in particular be connected in parallel to the i-th row switching element. In this way, an uncontrolled flow of current, in particular between a plurality of heating matrix elements, can be avoided.
  • the i, j-th heating matrix element has at least one i, j-th capacitance, by means of which the i, j-th inductor is connected to at least one reference potential common to the heating matrix elements.
  • the reference potential common to the heating matrix elements is in particular the operating potential.
  • the i, j-th heating matrix element has in particular at least one i, j-th further capacitance, by means of which the i, j-th inductor is connected to at least one further reference potential common to the heating matrix elements.
  • the further reference potential common to the heating matrix elements is in particular the further operating potential.
  • the i, j-th capacitance comprises at least one capacitor.
  • the capacitance can preferably comprise a plurality of capacitors, in particular a capacitor network, which preferably consists of capacitors connected at least partially in series and / or in parallel with one another. Furthermore, the capacitance can in particular be adjustable.
  • the i, j-th inductor has in particular at least one i, j-th further connection which is connected to the i, j-th capacity as well as with the i, j-th further capacity is connected. In this way, a natural frequency of an oscillating circuit of the household appliance device can advantageously be matched to the area of application by a corresponding selection of the capacitances.
  • the heating matrix comprises a number N of row diodes, the i-th row diode connecting at least the i-th row switching element to at least one further reference potential common to the row switching elements, in particular the further operating potential.
  • the switching diode is the i-th row diode.
  • the heating matrix comprises a number M of column diodes, the jth column diode connecting at least the jth column switching element to at least one reference potential common to the column switching elements, in particular the operating potential.
  • the switching diode is the j-th column diode.
  • a particularly smooth shifting process can be achieved in this way.
  • control unit is provided in at least one cooking utensil detection mode, when an operating voltage assumes an at least essentially negligibly low value, to determine at least one electrical parameter occurring at at least one of the inductors.
  • the electrical parameter is preferably correlated with an electromagnetic coupling of the inductor with a cooking utensil, in particular with a degree of coverage and / or a material of the cooking utensil.
  • the control unit can infer the electromagnetic coupling of the inductor to the cookware at least on the basis of the electrical parameter and preferably determine this.
  • the electrical parameter corresponds in particular to a direct control variable.
  • the electrical parameter is advantageously an electrical signal and / or electronic signal, in particular measured by a sensor unit of the household appliance device.
  • the electrical parameter is preferably a frequency, amplitude and / or phase of a voltage that is applied to the inductor and / or of a current that flows through the inductor. This can a flexibility of the household appliance device can be improved since cooking utensils can be detected.
  • control unit is provided in the cooking utensil detection mode to first charge the inductor and then to discharge it again when an operating voltage assumes an at least essentially negligible value.
  • control unit is advantageously provided to detect a characteristic curve of a discharging process of the inductor and to determine the electrical characteristic variable by means of this characteristic curve.
  • the characteristic curve is in particular a time profile of the electrical parameter.
  • control unit is provided to determine the electrical characteristic value by adapting a comparison characteristic curve to the characteristic curve, in particular based on parameters for generating the comparison characteristic curve.
  • the household appliance device should in particular not be restricted to the application and embodiment described above.
  • the household appliance device can have a number of individual elements, components and units that differs from a number of individual elements, components and units mentioned herein in order to fulfill a mode of operation described herein.
  • values lying within the stated limits should preferably also be deemed disclosed and can be used as desired
  • Fig. 1 shows a household appliance 48a with a household appliance device in a schematic top view.
  • the household appliance 48a is designed as a cooking appliance.
  • the household appliance 48a is a hob, in particular a variable induction hob.
  • the household appliance 48a can be designed as any household appliance 48a, in particular a cooking appliance, which is different from a hob and in particular appears to be advantageous to a person skilled in the art, such as a microwave or an induction oven.
  • the household appliance device has a hob plate 50a.
  • the household appliance device is provided to operate at least one cookware which is arranged at any position on the hob plate 50a.
  • the hob plate 50a comprises preferred heating zone positions 52a, which indicate preferred positions for cooking utensils.
  • the hob plate 50a has six preferred heating zone positions 52a.
  • only one of the preferred heating zone positions 52a is provided with a reference number.
  • the hob plate 50a can in particular have any number of preferred heating zone positions 52a or even no preferred heating zone positions 52a.
  • Fig. 2 shows a schematic circuit diagram of part of the household appliance device.
  • the household appliance device comprises at least a number N of row switching elements 10a.
  • the household appliance device further comprises at least a number M of column switching elements 12a.
  • the household appliance device comprises at least one heating matrix 14a.
  • the heating matrix 14a has at least one i, j-th heating matrix element 16a for any i from 1 to N and any j from 1 to M.
  • the heating matrix 14a has a number N ⁇ M of heating matrix elements 16a.
  • a total number N + M of row switching elements 10a and column switching elements 12a is greater than 2.
  • the total number N + M of row switching elements 10a and column switching elements 12a is less than or equal to the number N ⁇ M of heating matrix elements 16a.
  • N and / or M can be any other natural number that is considered to be particularly advantageous by a person skilled in the art.
  • a number N can be selected to be equal to a number M or such that the total number N + M is one greater than the number N ⁇ M.
  • the i-th row switch element 10a is designed as a transistor.
  • the i-th row switch element 10a has a first connection.
  • the first connection is a source connection.
  • the first connection of the i-th row switch element 10a is connected to the i, j-th heating matrix element 16a.
  • the i-th row switch element 10a has a second connection.
  • the second connection is a drain connection.
  • the second connection of the i-th row switch element 10a is connected to a reference potential 30a common to the row switch elements 10a.
  • the reference potential 30a common to the row switching elements 10a is an operating potential of an operating voltage, specifically preferably a ground potential.
  • the household appliance device has, in particular, a rectifier which at least partially converts a line voltage into the operating voltage.
  • the operating voltage is the voltage which is present between the reference potential 30a common to the row switching elements 10a and a further reference potential 32a common to the column switching elements 12a.
  • the i-th row switch element 10a has a control connection.
  • the control connection is a gate connection.
  • the control connection is connected to a control unit 38a of the household appliance device.
  • the j-th column switching element 12a is formed as a transistor.
  • the j-th column switching element 12a has a first connection.
  • the first connection is a source connection.
  • the first connection of the j-th column switching element 12a is connected to the further reference potential 32a common to the column switching elements 12a.
  • the further reference potential 32a common to the column switching elements 12a is the further operating potential.
  • the j-th column switching element 12a has a second terminal.
  • the second connection is a drain connection.
  • the second terminal of the j-th column switching element 12a is connected to the i, j-th heating matrix element 16a.
  • the j-th column switching element 12a has a control connection.
  • the control connection is a gate connection.
  • the control connection is connected to the control unit 38a of the household appliance device.
  • the i-th row switch element 10a and the j-th column switch element 12a are arranged in a half-bridge topology. It is conceivable that the household appliance device comprises i-th further row switching elements 10a and j-th further column switching elements 12a, so that i-th row switching elements 10a, the i-th further ones Row switching elements 10a, the j-th column switching elements 12a and the j-th further column switching elements 12a can be arranged in a full-bridge topology.
  • the i-th row switching element 10a and the j-th column switching element 12a serve as inverter switching elements.
  • the i-th row switching element 10a and the j-th column switching element 12a together form at least one i, j-th inverter unit 54a of the household appliance device.
  • the household appliance device comprises in particular a number N ⁇ M inverter units 54a.
  • the control unit 38a is provided to control the i-th row switching element 10a and the j-th column switching element 12a as inverter switching elements.
  • the control unit 38a controls the i-th row switching element 10a and the j-th column switching element 12a in such a way that a soft switching process occurs between at least a first switching state and a second switching state of the i-th row switching element 10a and the j-th column switching element 12a.
  • the i, j-th heating matrix element 16a has at least one i, j-th inductor 18a.
  • the i, j-th inductor 18a is connected both to the i-th row switching element 10a and to the j-th column switching element 12a.
  • the i, j-th inductor 18a has at least one i, j-th connection 20a.
  • the i, j-th connection 20a is connected both to the i-th row switch element 10a, in particular the first connection of the i-th row switch element 10a, and to the j-th column switch element 12a, in particular to the second connection of the j-th column switch element 12a , connected.
  • a total of N ⁇ M inductors 18a are arranged in a circuit diagram in the heating matrix 14a.
  • the i, j-th heating matrix element 16a has at least one i, j-th diode 24a.
  • the i, j-th inductor 18a is connected at least to the i-th row switching element 10a by means of the i, j-th diode 24a.
  • a first connection of the i, j-th diode 24a is connected to the i, j-th connection 20a of the i, j-th inductor 18a.
  • a second connection of the i, j-th diode 24a is connected to a first connection of the i-th row switch element 10a.
  • the i, j-th diode 24a allows a current to flow in the direction of the i-th row switching element 10a.
  • the i, j-th diode 24a blocks a current flow in the direction of the i, j-th inductor 18a.
  • the i, j-th heating matrix element 16a has at least one i, j-th further diode 26a.
  • the i, j-th inductor 18a is connected at least to the j-th column switching element 12a.
  • a first connection of the i, j-th further diode 26a is connected to the i, j-th terminal of the i, j-th inductor 18a.
  • a second connection of the i, j-th further diode 26a is connected to the second connection of the j-th column switching element 12a.
  • the i, j-th further diode 26a allows a current to flow in the direction of the i, j-th inductor 18a.
  • the i, j-th further diode 26a blocks a current flow in the direction of the j-th column switching element 12a.
  • the i, j-th heating matrix element 16a has at least one i, j-th capacitance 28a.
  • the i, j-th capacitance 28a is a capacitor.
  • the i, j-th inductor 18a is connected to at least one reference potential 30a common to the heating matrix elements 16a.
  • the reference potential 30a common to the heating matrix elements 16a is the operating potential.
  • a first connection of the i, j-th capacitance 28a is connected to an i, j-th further connection 42a of the i, j-th inductor 18a.
  • a second connection of the i, j-th capacitance 28a is connected to the common reference potential 30a.
  • An i, j-th heating matrix element 16a has at least one i, j-th further capacitance 29a.
  • the i, j-th further capacitance 29a is a capacitor.
  • an i, j-th inductor 18a is connected to at least one further reference potential 32a common to the heating matrix elements 16a.
  • the further reference potential 32a common to the heating matrix elements 16a is a further operating voltage.
  • a first connection of the i, j-th further capacitance 28a is connected to an i, j-th further connection 42a of the i, j-th inductor 18a.
  • a second connection of the i, j-th capacitance 28a is connected to the further reference potential 32a common to the heating matrix elements 16a.
  • the i, j-th capacitance 28a can be designed as a capacitor network which comprises a plurality of capacitors in series and / or capacitors connected in parallel.
  • the household appliance device has a number M of column diodes 36a.
  • the j-th column diode 36a connects at least one j-th column switching element 12a to at least one reference potential 30a common to the column switching elements 12a.
  • the reference potential 30a common to the column switching elements 12a is equal to a reference potential 30a common to the row switching elements 10a.
  • a first connection of the j-th column switching element 12a is connected to a further reference potential 32a common to the column switching elements 12a.
  • a second terminal of the j-th column switching element 12a is connected to a first terminal of a j-th column diode 36a.
  • the j-th column diode 36a blocks a current in the direction of the Column switching elements 12a common reference potential 30a.
  • the j-th column diode 36a allows a current from the direction of the reference potential 30a common to the column switching elements 12a.
  • the household appliance device has a number N of row diodes 34a.
  • the i-th row diode 34a connects at least one i-th row switching element 10a to at least one further reference potential 32a common to the row switching elements 10a.
  • the further reference potential 32a common to the row switching elements 10a is a further operating voltage.
  • the further reference potential 32a common to the row switching elements 10a is equal to the further reference potential 32a common to the column switching elements 12a.
  • a first connection of the i-th row diode 34a is connected to a first connection of the i-th row switching element 10a.
  • a second connection of the i-th row diode 34a is connected to the further reference potential 32a common to the row switching elements 10a.
  • the i-th row diode 34a blocks a current from the direction of the further reference potential 32a common to the row switching elements 10a.
  • the i-th row diode 34a allows a current from the direction of the further reference potential 32a common to the row switching elements 10a.
  • Fig. 3 a plan view of a part of the household appliance device with an inductor matrix 22a is shown.
  • the i, j-th inductors 18a are spatially arranged in the inductor matrix 22a.
  • the inductor matrix 22a is different from the heating matrix 14a with respect to the proximity relationships of at least two of the i, j-th inductors 18a relative to one another.
  • i, j-th inductors 18a of the same i or j are adjacent to one another.
  • Fig. 4 shows a method for controlling the household appliance device.
  • the method can be applied equivalently to any further i-th electrical components and j-th electrical components.
  • the method includes an operating step 56a.
  • the control unit 38a controls the 2nd row switching element 10a and the 1st column switching element 12a as inverter switching elements.
  • the 2nd row switching element 10a and the 1st column switching element 12a alternately change from a first switching state to a second switching state through a switching process.
  • the 2nd row switching element 10a and the 1st column switching element 12a connect the 2.1th heating matrix element 16a, in particular the 2.1th inductor 18a, alternately to the reference potential 30a common to the row switching elements 10a and to the further reference potential common to the column switching elements 12a 32a.
  • the 2nd row switching element 10a and the 1st column switching element 12a generate a supply voltage with which the 2.1th heating matrix element 16a, in particular the 2.1th inductor 18a, is operated.
  • a heating current flows through the 2.1th heating matrix element 16a, in particular the 2.1th inductor 18a.
  • the method comprises a cookware recognition mode 40a.
  • the cooking utensil detection mode 40a runs at the same time as operating step 56a. Alternatively, the cookware detection mode 40a can take place independently of the operating step 56a.
  • the cookware detection mode 40a comprises a loading step 58a.
  • the control unit 38a controls the 1st column switching element 12a in such a way that it changes to a first switching state.
  • the 1,1th heating matrix element 16a, in particular the 1,1th capacitance 28a is charged to the further reference potential 32a common to the column switching elements 12a by means of the 1st column switching element 12a.
  • the control unit 38a controls the 1st row switching element 10a in such a way that it is in a second switching state and thus does not establish a conductive connection to the reference potential 30a common to the row switching elements 10a. No current flows, which means that the charged voltage is retained.
  • the 2.2th heating matrix element 16a in particular the 2.2th capacitance 28a, is charged with the reference potential 30a made available by the 2nd line switch element 10a and shared with the line switch elements 10a.
  • the controls Control unit 38a switches on the 2nd row switching element 10a, so that this changes to a second switching state.
  • the 2.2th heating matrix element 16a in particular the 2.2th capacitance 28a, is charged to the reference potential 30a common to the row switching elements 10a.
  • the control unit 38a controls the 2nd column switching element 12a in such a way that it is in the second switching state and thus no conductive connection to the further reference potential 32a common to the column switching elements 12a is established. No current flows, which means that the charged voltage is retained.
  • the cookware detection mode 40a comprises an unloading step 60a.
  • the unloading step 60a is performed during the operating step 56a.
  • the operating voltage which is applied between the 2nd row switching element 10a and the 1st column switching element 12a varies over time. If the operating voltage assumes an at least essentially vanishingly low value, the discharging step 60a is carried out.
  • the control unit 38a discharges the 1,1-th heating matrix element 16a.
  • the control unit 38a switches the 1st line switching element 10a to the first switching state.
  • the 1st row switching element 10a connects the 1.1th heating matrix element 16a, in particular the 1.1th capacitance 28a, to the reference potential 30a common to the row switching elements 10a.
  • the heating matrix element 16a, in particular the 1.1-th capacitance 28a discharges.
  • a characteristic curve 46a of the discharging process is recorded.
  • Another characteristic curve 47a of the discharging process is recorded.
  • the cooking utensil detection mode 40a comprises a determination step 62a.
  • a comparison characteristic curve is adapted to the characteristic curve 46a detected in the discharging step 60a and in particular to the further characteristic curve 47a.
  • a quality of an electromagnetic coupling is determined from the parameters of the comparison characteristic. From the quality of the electromagnetic coupling, a degree of overlap between the 1,1-th inductor 18a and a cookware coupled to the 1,1-th inductor 18a and / or a material of the cookware is determined.
  • FIG. 13 shows a diagram of the method for controlling the home appliance device.
  • a time is plotted on an abscissa axis 64a.
  • a voltage is plotted on an ordinate axis 66a.
  • a first voltage curve 68a shows a time profile of the supply voltage which is applied to the 2,1-th heating matrix element 16a.
  • a second voltage curve 70a shows a time profile of a voltage which is applied to the 1,1-th heating matrix element 16a.
  • a third voltage curve 72a shows a time profile of a voltage which is applied to the 1,2-th heating matrix element 16a.
  • a fourth voltage curve 74a shows a time profile of a voltage which is applied to the 2.2th heating matrix element 16a.
  • a fifth voltage curve 76a shows a time profile of the operating voltage.
  • FIG. 13 shows a diagram of the method for controlling the home appliance device.
  • a time is plotted on an abscissa axis 64a.
  • a current is plotted on an ordinate axis 66a.
  • a first current curve 80a shows a time profile of the heating current which flows through the 2.1th heating matrix element 16a.
  • a second current curve 82a shows a time profile of a current which flows through the 1,1-th heating matrix element 16a.
  • a third current curve 84a shows a current which flows through the 1,2-th heating matrix element 16a.
  • a fourth current curve 86a shows a current flowing through the 2.2th heating matrix element 16a.
  • Figure 6b is an area of the graph of Figure 6a is shown at a point in time T at which the operating voltage assumes an at least essentially vanishingly low value.
  • the abscissa axis 64a has a finer scale than in FIG Figure 6a .
  • the second current curve 82a and the second voltage curve 70a show the charging step 58a of the 1,1-th heating matrix element 16a.
  • the 1,1th heating matrix element 16a is charged with the further reference potential 32a common to the column switching elements 12a.
  • the discharging step 60a as soon as the operating voltage, the fifth voltage curve 76a, assumes an at least substantially zero value, the 1,1th heating matrix element 16a is discharged.
  • a current flows which corresponds to the second current curve 82a.
  • the second voltage curve 70a is recorded.
  • the second voltage characteristic serves as a characteristic 46a for determining the electrical characteristic.
  • the second current curve 82a is recorded.
  • the second current curve 82a serves as a further characteristic curve 47a for determining the electrical parameter.
  • Fig. 7 shows a circuit diagram of a further embodiment of the invention.
  • the further exemplary embodiment differs from the previous exemplary embodiment at least essentially with regard to a number N and a number M.
  • a number N of row switching elements 10b is equal to the number M of column switching elements 12b.
  • the total number N + M of row switching elements 10b and column switching elements 12b is less than or equal to the number N ⁇ M of heating matrix elements 16b.
  • At least the i-th row switching element 10b, in particular all row switching elements 10b, and / or at least the j-th column switching element 12b, in particular all column switching elements 12b, are designed as switches, preferably relays.
  • the household appliance device also has an additional inverter unit 54b.
  • the inverter unit 54b has a first inverter element 88b.
  • the inverter unit 54b also has a second inverter element 89b.
  • the inverter elements 88b, 89b are designed as transistors.
  • the inverter element 88b connects the row switching elements 10b to a reference potential 30b common to the row switching elements 10b.
  • the further inverter element 89b connects the column switching elements 12b to a further reference potential 32b common to the column switching elements 12b.
  • Fig. 8 shows another embodiment of the invention.
  • the further exemplary embodiment differs from the previous exemplary embodiment at least essentially with regard to a number N and a number M.
  • the heating matrix 14f forms a circuit diagram vector, in particular a column vector. In an embodiment for which it applies that the total number N + M is one greater than the number N, i, 1st diodes 24f can be dispensed with.
  • Fig. 9 shows another embodiment of the invention.
  • the further exemplary embodiment differs from the previous exemplary embodiment at least essentially with regard to a number N and a number M.
  • the total number N + M of row switching elements 10g and column switching elements 12g is one greater than the number N ⁇ M of heating matrix elements 16g.
  • the heating matrix 14g forms a circuit diagram vector, in particular a column vector.
  • the total number N + M is one greater than the number N, i, 1st diodes 24g can be dispensed with.
  • the household appliance device has a number of N return diodes 90g.
  • the i-th flyback diode 90g is connected to the i-th row switching element 10g.
  • the i-th flyback diode 90g is connected in parallel to the i-th row switching element 10g.
  • a first connection of the flyback diode 90g is connected to a first connection of the i-th row switching element 10g.
  • a second connection of the i-th flyback diode 90g is connected to a second connection of the i-th row switching element 10g.
  • the i-th flyback diode 90g blocks a current flow in the direction of the reference potential 30g common to the row switching elements 10g.
  • the i-th flyback diode 90g allows a current to flow from the direction of the reference potential 30g common to the row switching elements 10g.
  • the household appliance device can have a number of further return diodes 90g.
  • a j-th further flyback diode 90g could be connected in parallel to a j-th column switching element 12g.
  • a column diode can be dispensed with.
  • Fig. 10 shows another embodiment of the invention.
  • the further exemplary embodiment differs from the previous exemplary embodiment at least essentially with regard to a number of additional electrical components.
  • the present exemplary embodiment differs in a circuit of row diodes 34h.
  • the i-th row diode 34h is connected to an i, j-th terminal 20h of an i, j-th inductor 18h.
  • a first connection of the i-th Row diode 34h is connected to the i, j-th terminal 20h.
  • a second connection of the i-th row diode 34h is connected to a further reference potential 32h common to the row switching elements 10h.
  • the i-th row diode 34h blocks a current from the direction of the further reference potential 32h common to the row switching elements 10h.
  • the i-th row diode 34h allows a current to pass from the direction of the further reference potential 32h common to the row switching elements 10h.
  • Fig.11 shows another embodiment of the invention.
  • the further exemplary embodiment differs from the previous exemplary embodiment at least essentially with regard to a number of additional electrical components.
  • the household appliance device has a number N of line capacities 92k.
  • the i-th row capacitance 92k is connected in parallel to an i-th row switching element 10k.
  • an i-th flyback diode 90k is connected in parallel to an i-th row switching element 10k.
  • a first connection of the i-th row capacitance 92k is connected to a first connection of the i-th row switching element 10k.
  • a second connection of the i-th row capacitance 92k is connected to a second connection of the i-th row switching element 10k.
  • a column diode can be dispensed with.
  • Fig.12 shows another embodiment of the invention.
  • the further exemplary embodiment differs from the previous exemplary embodiment at least essentially in terms of a number N and a number M.
  • the total number N + M of row switching elements 10p and column switching elements 12p is one greater than the number N ⁇ M of heating matrix elements 16p.
  • the heating matrix 14p forms a circuit diagram vector, in particular a line vector.
  • the total number N + M is one greater than the number N
  • j 1st further diodes can be dispensed with.
  • the household appliance device has a number of M further return diodes 91p.
  • the j-th further flyback diode 91p is connected to the j-th column switching element 12p.
  • the j-th further flyback diode 91p is connected in parallel to the j-th column switching element 12p.
  • a first connection of the further flyback diode 91p is connected to a first connection of the j-th column switching element 12p.
  • a second connection of the j-th further flyback diode 91p is connected to a second connection of the j-th column switching element 12p.
  • the j-th further flyback diode 91p allows a current to flow in the direction of the column switching elements 12p common reference potential 32p.
  • the j-th further flyback diode 91p blocks a current flow from the direction of the reference potential 32 common to the column switching elements 12p.
  • the household appliance device can have a number of flyback diodes 90p.
  • An i-th flyback diode 90p could be connected in parallel with an i-th row switching element 10p.
  • a row diode can be dispensed with in the present case.
  • Fig. 13 shows another embodiment of the invention.
  • the further exemplary embodiment differs from the previous exemplary embodiment at least essentially with regard to a number of additional electrical components.
  • the household appliance device has a number M of column capacities 93q.
  • the j-th column capacitance 93q is connected in parallel to a j-th column switching element 12q.
  • a first connection of the j-th column capacitances 93q is connected to a first connection of the j-th column switching element 12q.
  • a second connection of the j-th column capacitances 93q is connected to a second connection of the j-th column switching element 12q.
  • an i-th row diode 34 can be dispensed with.

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

Claims (18)

  1. Dispositif d'appareil ménager, en particulier dispositif d'appareil de cuisson, avec au moins un nombre N d'éléments de commutation de lignes (10a-q), avec au moins un nombre M d'éléments de commutation de colonnes (12a-q) et avec au moins une matrice chauffante (14a-q), laquelle présente au moins un nombre NxM d'éléments de matrice chauffante (16a-q), dans lequel de quelconques i de 1 à N et de quelconques j de 1 à M, avec un nombre total N+M d'éléments de commutation de lignes (10a-q) et d'éléments de commutation de colonnes (12a-q), sont supérieurs à 2, dans lequel le i, j-ième élément de matrice chauffante (16a-q) comprend au moins un i, j-ième inducteur (18a-q) et est relié à la fois au i-ième élément de commutation de lignes (10a-q) et au j-ième élément de commutation de colonnes (12a-q), caractérisé par au moins une diode de commutation (34a-q, 36a-q), qui relie au moins l'un des éléments de commutation de lignes (10a-q) ou au moins l'un des éléments de commutation de colonnes (12a-q) à au moins un potentiel de référence (30a-q, 32a-q).
  2. Dispositif d'appareil ménager selon la revendication 1, caractérisé en ce que le i, j-ième inducteur (18a-q) présente au moins un i, j-ième raccordement (20a-q), lequel est relié à la fois au i-ième élément de commutation de lignes (10a-q) et au j-ième élément de commutation de colonnes (12a-q).
  3. Dispositif d'appareil de cuisson selon la revendication 1 ou 2, caractérisé en ce que les inducteurs (18a-q) sont disposés spatialement dans une matrice d'inducteurs (22a), laquelle diffère, quant aux relations de voisinage d'au moins deux des inducteurs (18a-q) l'un par rapport à l'autre, de la matrice chauffante (14a-q), dans laquelle les inducteurs (18a-q) sont disposés à la façon d'un schéma de connexions.
  4. Dispositif d'appareil de cuisson selon la revendication 3, caractérisé en ce que dans la matrice d'inducteurs (22a), les inducteurs (18a-q) sont disposés spatialement de telle sorte qu'au moins un i, j-ième inducteur (18a-q), pour lequel i=j dans la matrice chauffante (14a-q), est voisin d'au moins i, j-ième inducteur (18a-q) pour lequel i≠j dans la matrice chauffante (14a).
  5. Dispositif d'appareil de cuisson selon la revendication 3 ou 4, caractérisé en ce que dans la matrice d'inducteurs (22a) les i, j-ièmes inducteurs (18a-q) sont voisins l'un de l'autre selon i ou selon j.
  6. Dispositif d'appareil de cuisson selon l'une des revendications précédentes, caractérisé en ce que le nombre N d'éléments de commutation de lignes (10b) équivaut au nombre M d'éléments de commutation de colonnes (12b).
  7. Dispositif d'appareil de cuisson selon l'une des revendications 1 à 5, caractérisé en ce que le nombre total N+M d'éléments de commutation de lignes (10f-q) et d'éléments de commutation de colonnes (12f-q) est supérieur d'une unité au nombre NxM d'éléments de matrice chauffante (16f-q).
  8. Dispositif d'appareil de cuisson selon l'une des revendications précédentes, caractérisé en ce que le i, j-ième élément de matrice chauffante (16a; 16b; 16p; 16q) présente au moins une i, j-ième diode (24a; 24b; 24p; 24q), au moyen de laquelle le i, j-ième inducteur (18a; 18b; 18p; 18q) est relié au moins au i-ième élément de commutation de lignes (10a; 10b; 10p; 10q).
  9. Dispositif d'appareil de cuisson selon l'une des revendications précédentes, caractérisé en ce que le i, j-ième élément de matrice chauffante (16a-k) présente au moins une i, j-ième diode supplémentaire (26a-k), au moyen de laquelle le i, j-ième inducteur (18a-k) est relié au moins au j-ième élément de commutation de colonnes (12a-k).
  10. Dispositif d'appareil de cuisson selon l'une des revendications précédentes, caractérisé en ce que le i, j-ième élément de matrice chauffante (16a-q) présente au moins une i, j-ième capacité (28a-q), au moyen de laquelle le i, j-ième inducteur (18a-q) est au moins relié à au moins un potentiel de référence (30a-q) commun aux éléments de matrice chauffante (16a-q).
  11. Dispositif d'appareil de cuisson selon l'une des revendications précédentes, caractérisé par un nombre M de diodes de colonnes (36a-f; 36h; 36p; 36q-q), dans lequel la j-ième diode de colonne (36a-f; 36h; 36p; 36q-q) relie au moins le j-ième élément de commutation de colonnes (12a-f; 12h; 12p; 12q-q) à au moins un potentiel de référence (30a-f; 30h; 30p;30q-q) commun aux éléments de commutation de colonnes (12a-f; 12h; 12p; 12q-q).
  12. Dispositif d'appareil de cuisson selon l'une des revendications précédentes, caractérisé par un nombre N de diodes de lignes (34a-k), dans lequel la i-ième diode de lignes (34a-k) relie au moins le i-ième élément de commutation de ligne (10a-k) à au moins un potentiel de référence (32a-k) supplémentaire commun aux éléments de commutation de lignes (10a-k).
  13. Dispositif d'appareil de cuisson selon l'une des revendications précédentes, caractérisé par une unité de commande (38a-q), prévue pour une commande des éléments de commutation de lignes (10a-q) et des éléments de commutation de colonnes (12a-q).
  14. Dispositif d'appareil de cuisson selon la revendication 13, caractérisé en ce que l'unité de commande (38a-q) est prévue afin de commander les éléments de commutation de lignes (10a-q) et les éléments de commutation de colonnes (12a-q) sous la forme d'éléments de commande d'onduleur.
  15. Dispositif d'appareil de cuisson selon la revendication 13 ou 14, caractérisé en ce que l'unité de commande (38a-q) est prévue afin de déterminer, dans au moins un mode de détection d'élément de batterie de cuisine (40a), lorsque la tension d'alimentation adopte une faible valeur au moins essentiellement infime, au moins une grandeur électrique caractéristique se manifestant en au moins l'un des inducteurs (18a-q).
  16. Dispositif d'appareil de cuisson selon la revendication 15, caractérisé en ce que l'unité de commande (38a-q) est, dans le mode de détection d'élément de batterie de cuisine (40a), prévue afin de charger d'abord l'inducteur (18a-q) et de le décharger ensuite à nouveau, lorsqu'une tension d'alimentation adopte une valeur faible au moins essentiellement infime.
  17. Dispositif d'appareil ménager selon la revendication 16, caractérisé en ce que l'unité de commande (38a-q) est prévue, dans le mode de détection d'élément de batterie de cuisine (40a), afin de capter une courbe caractéristique (46a, 47a) d'un processus de déchargement de l'inducteur (18a-d) et de déterminer la grandeur électrique caractéristique au moyen de celle-ci.
  18. Appareil ménager (48a), en particulier appareil de cuisson, avec un dispositif d'appareil ménager selon l'une des revendications précédentes.
EP17822459.8A 2016-12-19 2017-12-12 Appareil électroménager Active EP3556180B1 (fr)

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ES201631615A ES2673131B1 (es) 2016-12-19 2016-12-19 Dispositivo de aparato domestico de coccion por induccion con una matriz de elementos de calentamiento
PCT/IB2017/057812 WO2018116053A1 (fr) 2016-12-19 2017-12-12 Appareil électroménager

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WO2018116053A1 (fr) 2018-06-28
ES2673131A1 (es) 2018-06-19
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EP3556180A1 (fr) 2019-10-23
US20190274190A1 (en) 2019-09-05
CN110063090B (zh) 2021-06-08
CN110063090A (zh) 2019-07-26

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