EP3556180A1 - Appareil électroménager - Google Patents

Appareil électroménager

Info

Publication number
EP3556180A1
EP3556180A1 EP17822459.8A EP17822459A EP3556180A1 EP 3556180 A1 EP3556180 A1 EP 3556180A1 EP 17822459 A EP17822459 A EP 17822459A EP 3556180 A1 EP3556180 A1 EP 3556180A1
Authority
EP
European Patent Office
Prior art keywords
switching elements
appliance device
inductor
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.)
Granted
Application number
EP17822459.8A
Other languages
German (de)
English (en)
Other versions
EP3556180B1 (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
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 EP3556180A1 publication Critical patent/EP3556180A1/fr
Application granted granted Critical
Publication of EP3556180B1 publication Critical patent/EP3556180B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • 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
    • 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
    • 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
  • a household appliance device with at least one inverter unit in half-bridge or full-bridge circuit for operating a plurality of inductors by means of a multiplexer is already known from the prior art.
  • the object of the invention is in particular to provide a generic device with improved properties in terms of 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 relates to a household appliance device, in particular a cooking device device and preferably a cooktop device, having 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 having at least one, in particular exactly one, number N * M of heating matrix elements 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 means that the i, j-th heating matrix element comprises at least one, preferably exactly one, i, j-th inductor and is connected to both the i-th row switching element and the j-th column switching element, and at least a switching diode which connects at least one of the row switching elements or at least one of the column switching elements with at least one reference potential.
  • a "household appliance device” is to be understood as meaning, in particular, at least one part, preferably at least one subassembly, of a domestic appliance
  • Cooking appliance preferably as a microwave, an oven and / or a, in particular variable, hob, in particular a matrix cooktop, 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 formed.
  • a "cooking appliance device” is to be understood in particular as meaning a household appliance device which at least partially forms a cooking appliance.
  • a variable hob is to be understood in this context to mean, in particular, a cooktop in which inductors, in particular in a regular spatial arrangement, in particular under a cooktop panel the domestic appliance device, are arranged and at least partially at least one heating zone, preferably a plurality of variable heating zones form, which comprises a portion of the hob plate preferably of at least 10%, preferably at least 30% and more preferably at least 40% of a total area of the hob plate / include.
  • the inductors are designed to form the heating zone and to adapt it to the cooking utensil, depending on a position of a cooking utensil positioned on the hob plate.
  • the term "provided” should be understood to mean specially programmed, designed and / or equipped.Assuming that an object is intended for a specific function should in particular mean that the object fulfills this specific function in at least one application and / or operating state
  • a "number” is to be understood as meaning any number from the set of natural numbers. In particular, it should always be true 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 on
  • Switching elements are understood, which lines and / or columns of a grid are associated with a switchable arrangement and / or define them.
  • 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 preferred arrangement by a person skilled in the art and in particular particularly compact.
  • the line switching elements are in particular with a
  • Line switching elements common reference potential is in particular a
  • the reference potential common to the row switching elements is in particular a ground potential.
  • the column switching elements are in particular with a further reference potential common to the column switching elements connected.
  • 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 different in particular from a ground potential. In particular, lies between the reference potential common to the row switching elements and the further common to the column switching elements
  • switching element is to be understood in this context, in particular an element which to do so
  • the switching element has at least one control connection via which the switching state of the switching element can be controlled.
  • the switching element is in particular provided to change over from one of the switching states to the other switching state in a switching operation.
  • the switching element can be embodied as any switching element which appears sensible to a person skilled in the art, preferably semiconductor switching element, such as a transistor, preferably as FET, as MOSFET and / or as IGBT, preferably as RC-IGBT and particularly preferably as HEMT. Transistor.
  • a "HEMT transistor” should be understood in particular to be a high-electron mobility transistor, in particular having a particularly high electron mobility, which is in particular at 25 C C, in particular at least 400 cm 2 V ' V, preferably at least 800 cm 2 V ' V 1, more preferably at least
  • the switching element has at least one first terminal, which is preferably a source terminal, a second terminal, which is preferably a drain terminal, and / or a control terminal, which is in particular a gate terminal, on.
  • at least one diode, in particular a regeneration diode, and / or at least one capacitance, in particular a damping capacitance can be connected to the switching element
  • Household appliance device to be connected in parallel. At least one i-tes
  • Row switching element and at least one j-th column switching element in particular in a full-bridge topology or preferably are connected in a half-bridge topology, serve in particular as inverter switching elements and together form at least partially, preferably completely, an i, jth inverter unit of the household appliance device.
  • the household appliance device comprises in particular a number ⁇ ⁇ ⁇ of inverter units.
  • An "ij-th inverter unit” is to be understood in particular as meaning a unit which is intended 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,
  • control unit is to be understood as meaning, in particular, an electronic unit which is preferably at least partially integrated in a control and / or regulating unit of a domestic appliance
  • Control unit a computing unit and in particular in addition to the arithmetic unit, a memory unit with a stored therein control and / or control program, which is intended to be executed by the arithmetic unit.
  • the control unit is provided to the line switching elements and the
  • a "soft switching operation” is to be understood as meaning, in particular, a switching operation with a negligibly low power loss, which occurs in particular when the switching operation is preferably at least substantially free of stress.
  • ZVS zero voltage switching
  • control unit is provided to the switching elements in an at least in
  • Substantially stress-free switching operation to switch with a switching frequency which is greater than a resonance frequency of the ij-th heating matrix element.
  • a "vanishingly small value” is to be understood in particular as a value which in particular at least by a factor of 10, preferably by at least a factor of 50, preferably by at least a factor of 100, and more preferably by at least a factor of 500 less than an operating maximum value.
  • a "heating matrix” is to be understood as meaning, in particular, a raster of a circuit-wise arrangement of i, j-th heating matrix elements.
  • the i, j-th heating matrix element is in particular at least indirectly and preferably directly connected to both the i-th row switching element and the j-th column switching element
  • a connection between the electrical components is free of at least one further electrical component, which has a phase between a current and a voltage and / or or preferably a current and / or a voltage itself.
  • the i, j-th inductor at least one, in particular exactly one i, j-th connection, which with both the i-th
  • An "inductor” is to be understood in particular as meaning an electrical component which is provided in at least one cooking operating state, at least partially at least one cooking utensil which is mounted on the cooking surface plate of the cooking appliance
  • Household appliance device is positioned to heat inductively.
  • the inductor comprises at least one, preferably in the form of a circular disk, wound electrical conductor which is traversed in at least the Gar Anlagensschreib of a high-frequency heating current.
  • the inductor is preferably designed to convert electrical energy into an alternating magnetic field in order to cause eddy currents and / or re-magnetization effects in the cooking utensil, which are converted into heat.
  • Household appliance device with improved properties in terms of efficiency, in particular a cost-efficiency and / or energy efficiency, are provided.
  • a particularly soft and thus energy-efficient switching operation can be achieved.
  • a number of switching elements can be reduced because switching elements operate in part several inductors, which component costs can be saved.
  • different inductors of the heating matrix can be controlled individually, thereby reducing energy consumption and
  • an electrical stray field can be reduced.
  • the abovementioned arrangement makes it possible to switch the switching elements soft, in particular at least substantially without voltage, as a result of which switching losses can be reduced.
  • an advantageous detection of cooking utensils can be made possible, wherein additional components, such as sensor elements, can be avoided.
  • the inductors are arranged spatially in an inductor matrix, which is relative to a neighborhood ratio of at least two of the inductors is different from the heating matrix, in which the inductors are arranged in a circuit diagram.
  • An "inductor matrix” is to be understood in particular as meaning a grid of a spatial arrangement of the inductors below a cooking field plate of the household appliance device
  • Neighborhood Ratio is to be understood in particular 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.
  • Heating matrix is arranged.
  • the ij-th inductors of the same i or the same j are arranged in a same row or column of the heating matrix.
  • Line switching elements is less than or equal to the number N * M of Bankmandijkerianan.
  • N * M of Bankmandijkerianan In order to operate a number N * M of heating matrix elements with the smallest possible total number N + M of column switching elements and row switching elements and to advantageously reduce component costs, it is proposed that the number N of
  • Column switching elements is equal to the number M of row switching elements.
  • the heating matrix is then formed as a square matrix.
  • Heating matrix is in particular as a vector, preferably a row vector, in particular if the number N of the
  • the ij-th heating matrix element has at least one ij-th diode, by means of which the ij-th inductor at least with the i-th Row switching element is connected.
  • the i, jth diode is at the i, jth terminal between the i, jth inductor and the ith row switching element
  • the i, jth diode allows a current to 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 has at least one further jth diode, by means of which the i, jth inductor is connected at least to the jth column switching element.
  • the i, jth additional diode is connected to the i, jth terminal between the i, jth inductor and the jth column switching element.
  • the i, jth diode allows a current to 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.
  • the other i, j-th diode can be dispensed with.
  • a flyback diode and / or an attenuation capacitor could be connected in parallel to the i-th row switching element. In this way, in particular an uncontrolled flow of current, in particular between a plurality of heating matrix elements, can be avoided.
  • the i, j-th heating matrix element at least one i, j-th
  • Heating matrix elements common reference potential is in particular the
  • the i, j-th heating matrix element has, in particular, at least one further, jth capacitance, by means of which the i, jth inductor is connected to at least one further reference potential common to the heating matrix elements.
  • the further common reference potential common to the heating matrix elements is in particular the further operating potential.
  • the i, j-th capacity comprises at least one capacitor.
  • the capacitance may 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.
  • the capacity can be adjustable in particular.
  • the i, j-th inductor has in particular at least one i, j-th further connection, which with both the ij-th capacity and is connected to the i, j-th further capacity.
  • the heating matrix comprises a number N of row diodes, wherein the ith row diode at least the ith row switching element with at least one further reference potential common to the row switching elements,
  • the switching diode connects the i-th row switching element with a reference potential common to the row switching elements.
  • 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 with at least one reference potential common to the column switching elements, in particular the operating potential.
  • the switching diode is the jth column diode. This allows a particularly soft switching operation can be achieved.
  • control unit in at least one
  • Gargeschirrerkennungsmodus is provided for when an operating voltage assumes an at least substantially vanishingly small value to determine at least one occurring at least one of the inductors electrical characteristic.
  • 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 inductor with a cooking utensil, in particular with a degree of coverage and / or a material of the cooking utensil.
  • Close control unit at least on the basis of the electrical characteristic on the electromagnetic coupling of the inductor with the cooking utensils and preferably determine this.
  • the electrical parameter corresponds in particular to a direct
  • the electrical parameter is an electrical signal and / or an electronic signal, in particular measured by a sensor unit of the household appliance device.
  • the electrical characteristic is a frequency, amplitude and / or phase of a voltage applied to the inductor and / or a current flowing through the inductor. This can a flexibility of the household appliance device can be improved, since cookware can be detected.
  • control unit be in the
  • Gargeschirrerkennungsmodus is provided to first charge the inductor and then, when an operating voltage assumes an at least substantially vanishingly low value to recharge.
  • an operating voltage assumes an at least substantially vanishingly low value to recharge.
  • Control unit in the cooking dish detection mode provided to detect a characteristic of a discharge of the inductor and to determine the electrical characteristic by means of this characteristic.
  • the characteristic is in particular a time course of the electrical parameter.
  • the 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. This can be done in a simple manner, a discharge of the inductor, which can be avoided that a short circuit with other electrical components.
  • the household appliance device should not be limited to the application and embodiment described above.
  • the household appliance device should not be limited to the application and embodiment described above.
  • the household appliance device should not be limited to the application and embodiment described above.
  • Fig. 1 shows a household appliance with a household appliance device in one
  • FIG. 2 is a schematic circuit diagram of a part of the household appliance device with a heating matrix
  • FIG. 3 shows a part of the household appliance device with an inductor matrix in a schematic plan view
  • FIG. 5 a, b show various diagrams of typical current and / or voltage characteristics in an operation of the household appliance device
  • Fig. 6 a, b different graphs with typical power and / or
  • FIG. 7 shows another household appliance device in a circuit diagram
  • Fig. 8 shows another household appliance device in a circuit diagram
  • Fig. 9 shows another household appliance device in a circuit diagram
  • Fig. 10 shows another household appliance device in a circuit diagram
  • Fig. 11 shows a further household appliance device in a circuit diagram
  • Fig. 12 shows a further household appliance device in a circuit diagram
  • Fig. 13 shows another household appliance device in a circuit diagram
  • Fig. 1 shows a household appliance 48a with a household appliance device in a schematic plan view.
  • the household appliance 48a is designed in the present case as a cooking appliance.
  • the household appliance 48a is a hob, in particular a variable induction hob.
  • the household appliance 48a may be designed as any domestic appliance 48a, in particular cooking appliance, which differs from a cooking hob and, in particular, appears to be advantageous to a person skilled in the art, for example as a microwave or an induction baking oven.
  • the household appliance device has a hob plate 50a.
  • Household appliance device is intended to operate at least one cooking utensil, which is arranged at an arbitrary position on the hob plate 50a.
  • the cooktop panel 50a includes preferred heater zone locations 52a that identify preferred positions for cookware.
  • the hob plate 50a has six preferred heating zone positions 52a. For a better overview, only one of the preferred heating zone positions 52a is provided with a reference numeral. In particular, the hob plate 50a may have any number of preferred ones
  • Fig. 2 shows a schematic diagram of a part of the household appliance device.
  • the home appliance device comprises at least a number N of row switching elements 10a. Furthermore, the household appliance device 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 of N + M of
  • Row switching elements 10a and column switching elements 12a is greater than 2. Die
  • 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, which is considered by a skilled person to be particularly advantageous.
  • a number N may be chosen equal to a number M or such that the total number N + M is greater than the number N * M by one.
  • the i-th row switching element 10a is formed as a transistor.
  • the i-th row switching element 10a has a first terminal.
  • the first port is a source port.
  • the first terminal of the i-th row switching element 10a is connected to the i, jth heating matrix element 16a.
  • the i-th row switching element 10a has a second terminal.
  • the second port is a drain port. The second
  • Terminal of the ith row switching element 10a is connected to a reference potential 30a common to the row switching elements 10a.
  • the reference potential 30a common to the row switching elements 10a is an operating potential of an operating voltage, preferably a ground potential.
  • the household appliance device has
  • 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 switching element 10a has a control terminal.
  • Control terminal is a gate terminal.
  • the control terminal is connected to a control unit 38a of the household appliance device.
  • the jth column switching element 12a is formed as a transistor.
  • Column switching element 12a has a first terminal.
  • the first port is a source port.
  • the first terminal of the jth 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 jth column switching element 12a has a second terminal.
  • the second port is a drain port. The second
  • Terminal of the jth column switching element 12a is connected to the i, jth heating matrix element 16a.
  • the jth column switching element 12a has a control terminal.
  • the control terminal is a gate terminal.
  • the control terminal is connected to the control unit 38a of the home appliance device.
  • the ith row switching element 10a and the jth column switching element 12a are arranged in a half-bridge topology. It is conceivable that the household appliance device i-th comprises further row switching elements 10a and jth further column switching elements 12a, so that the ith row switching elements 10a, the ith further ones Row switching elements 10a, the jth column switching elements 12a and the jth further column switching elements 12a may be arranged in a full-bridge topology.
  • the ith row switching element 10a and the jth column switching element 12a serve as inverter switching elements.
  • Column switching element 12a together form at least one i-th inverter unit 54a of the household appliance device.
  • the household appliance device comprises a number N * M of inverter units 54a.
  • the control unit 38a is provided to drive the i-th row switching element 10a and the jth column switching element 12a as inverter switching elements.
  • the control unit 38a controls the i-th row switching element 10a and the jth column switching element 12a so that a smooth switching operation 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, jth inductor 18a.
  • the i, j-th inductor 18a is connected to both the ith row switching element 10a and the jth
  • the i, j-th inductor 18a has at least one i, j-th terminal 20a.
  • the i, j-th terminal 20a is connected both to the i-th row switching element 10a, in particular to the first terminal of the ith row switching element 10a, and to the jth column switching element 12a, in particular to the second terminal of the jth column switching element 12a , connected.
  • a total of N * M inductors 18a are arranged in a circuit diagram.
  • the i, j-th heating matrix element 16a has at least one i-th diode 24a.
  • the i-th inductor 18a is connected at least to the i-th row switching element 10a.
  • a first terminal of the i, jth diode 24a is connected to the ijth terminal 20a of the i, jth inductor 18a.
  • a second terminal of the i-th diode 24a is connected to a first terminal of the i-th row switching element 10a.
  • the ij-th diode 24a allows a current flow in the direction of the i-th row switching element 10a.
  • the ij-th diode 24a blocks a current flow in the direction of the i, jth inductor 18a.
  • the ij-th heating matrix element 16a has at least one ij-th further diode 26a.
  • the ij-th inductor 18a is at least the jth
  • a first terminal of the i-th further diode 26a is connected to the i, j-th terminal of the i, j-th inductor 18a.
  • a second terminal of the i, jth further diode 26a is connected to the second terminal of the jth
  • the i, j-th heating matrix element 16a has at least one i, jth capacitance 28a.
  • the i, j-th capacitance 28a is a capacitor.
  • the ijth inductor 18a is connected at least to a 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 terminal of the i, jth capacitance 28a is connected to an i, jth further terminal 42a of the i, jth inductor 18a.
  • a second terminal 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, jth additional capacity 29a.
  • the i, jth additional capacitance 29a is a capacitor.
  • an i, jth inductor 18a is connected at least to a 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 terminal of the i, jth further capacitance 28a is connected to an i, jth further terminal 42a of the i, jth inductor 18a.
  • a second terminal of the i, jth capacitance 28a is connected to the further reference potential 32a common to the heating matrix elements 16a.
  • the ijth capacity 28a may be considered to be a
  • Capacitor network may be formed, which comprises a plurality of capacitors in series and / or parallel capacitors.
  • the household appliance device has a number M of column diodes 36a.
  • the jth 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 terminal 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 jth column switching element 12a is connected to a first terminal of a jth column diode 36a.
  • the jth column diode 36a blocks a current in the direction of the Column switching elements 12a common reference potential 30a.
  • the jth column diode 36a allows a current from the direction of the common reference potential 30a to the column switching elements 12a.
  • the home appliance device has a number N of line diodes 34a.
  • the ith line diode 34a connects at least one i th line switching element 10a to at least one further reference potential 32a common to the line 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 terminal of the i-th row diode 34a is connected to a first terminal of the i-th row switching element 10a.
  • a second terminal of the ith line diode 34a is connected to the further reference potential 32a common to the row switching elements 10a.
  • the ith line 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 shows a plan view of a part of the household appliance device with an inductor matrix 22a.
  • i J -th inductors 18a of the same i in FIG. 3 are provided with the same hatching.
  • Inductors 18a, for which i j in the
  • Heating matrix 14a is valid, are additionally marked with a dot.
  • the i, j-th inductors 18a are spatially arranged in the inductor matrix 22a.
  • the inductor matrix 22a is different than the heating matrix 14a with respect to neighborhood ratios of at least two of the i, j-th inductors 18a relative to each other.
  • i, j-th inductors 18a of the same i or j are adjacent to each other.
  • the method can be equivalently transferred to any other i-th electrical components and j-th electrical components.
  • the method includes an operation 56a.
  • the control unit 38a drives the 2nd line switching element 10a and the 1st column switching element 12a as inverter switching elements.
  • the 2nd line switching element 10a and the 1st column switching element 12a alternately go from a first switching state to a second switching state by a switching operation.
  • the second row switching element 10a and the 1st column switching element 12a connect the 2, 1-th heating matrix element 16a, in particular the 2, 1-th inductor 18a, alternately with the reference potential 30a common to the row switching elements 10a and the further reference potential common to the column switching elements 12a 32a.
  • the second line switching element 10a and the 1st column switching element 12a generate a supply voltage with which the 2, 1-th heating matrix element 16a, in particular the 2, 1-th inductor 18a, is operated.
  • a heating current flows.
  • the method includes a cooking dish detection mode 40a.
  • Garware detection mode 40a is timed to coincide with operation 56a.
  • the cooking dish detection mode 40a may be independent of the
  • the cooking dish detection mode 40a includes a loading step 58a.
  • the control unit 38a controls the 1-th
  • the 1, 1-th heating matrix element 16a in particular the 1, 1-th capacitance 28a, is loaded by means of the 1-th column switching element 12a on the further reference potential 32a common to the column switching elements 12a.
  • the control unit 38a activates the 1-th row switching element 10a such that it is in a second switching state and thus does not establish a conductive connection with the reference potential 30a common to the row switching elements 10a. There is no current flowing, which maintains the charged voltage.
  • Heating matrix element 16a in particular the 2, 2 nd capacity 28a, loaded with the 2d line switching element 10a provided, the line switching elements 10a common reference potential 30a.
  • the Control unit 38a the second line switching element 10a, so that this goes into a second switching state.
  • the 2, 2-th heating matrix element 16a, in particular the 2, 2-th capacity 28a, is common to the line switching elements 10a
  • the control unit 38a controls the 2nd one
  • common further reference potential 32a is produced. There is no current flowing, which maintains the charged voltage.
  • the cooking dish detection mode 40a includes a discharge step 60a.
  • Discharge step 60a is performed during the operation step 56a.
  • Operating voltage applied between the 2 nd line switching element 10a and the 1 th column switching element 12a varies with time. If the operating voltage assumes an at least substantially negligible value, the discharging step 60a is carried out.
  • the control unit 38a discharges the 1, 1-th heating matrix element 16a. For this purpose, the control unit 38a switches the first line switching element 10a into the first one
  • the 1-th row switching element 10a connects the 1, 1-th heating matrix element 16a, in particular the 1, 1-th capacity 28a, with the reference potential 30a common to the row switching elements 10a.
  • the heating matrix element 16a in particular the 1, 1-th capacitor 28a, discharges.
  • a characteristic curve 46a of the discharge process is detected.
  • a further characteristic curve 47a of the discharge process is detected.
  • the cooking dish detection mode 40a includes a determining 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. From parameters of the comparison characteristic, a quality of an electromagnetic coupling is determined. From the quality of the electromagnetic coupling is also a
  • Fig. 5a shows a diagram of the method for controlling the household 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 temporal
  • a second voltage curve 70a shows a time course 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 2.2-th heating matrix element 16a.
  • a fifth voltage curve 76a shows a time profile of the operating voltage.
  • the curves 68a, 70a, 72a, 74a, 76a are shown again.
  • FIG. 5b shows a region of the graph of FIG.
  • FIG. 5a shows a diagram of the method for controlling the household appliance device.
  • a time is plotted on an abscissa axis 64a.
  • On a ordinate axis 66a, a current is applied.
  • a first current curve 80a shows a time profile of the heating current which flows through the 2, 1-th heating matrix element 16a.
  • Current curve 82a shows a time profile of a current flowing through the 1, 1-th heating matrix element 16a.
  • a third current curve 84a shows a current flowing through the 1, 2-th heating matrix element 16a.
  • a fourth current waveform 86a shows a current flowing through the 2.2-th heating matrix element 16a.
  • FIG. 6b shows a region of the graph of FIG. 6a at a time T at which the operating voltage assumes an at least substantially negligible value.
  • the abscissa axis 64a has a finer scaling than in FIG. 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, 1-th heating matrix element 16a In the charging step 58a, the 1, 1-th
  • the fifth voltage curve 76a assumes an at least substantially vanishing value
  • the 1, 1-th heating matrix element 16a is discharged.
  • the second voltage curve 70a is detected.
  • the second voltage characteristic serves as a characteristic 46a for determining the electrical parameter.
  • the second current curve 82a is detected.
  • the second current curve 82a serves as a further characteristic 47a for determining the electrical parameter.
  • Embodiments, in particular of Figures 1 to 6, can be referenced.
  • the letter a is the reference numerals of the embodiment in the figures 1 to 6 adjusted.
  • the letter a is replaced by the letters b, f, g, h, k, p and q.
  • Fig. 7 shows a circuit diagram of another embodiment of the invention.
  • the further embodiment differs from the previous embodiment at least substantially with respect 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. Further, the total number N + M of
  • Row switching elements 10b and column switching elements 12b less than or equal to the number ⁇ ⁇ ⁇ of heating matrix elements 16b.
  • Column switching element 12b in particular all column switching elements 12b, as a switch, preferably relay formed.
  • the household appliance device has an additional inverter unit 54b.
  • the inverter unit 54b has a first inverter element 88b.
  • the inverter unit 54b has a second inverter element 89b.
  • the inverter elements 88b, 89b are as
  • the inverter element 88b connects the
  • Embodiment differs from the previous embodiment, at least substantially with respect to a number N and a number M.
  • the heating matrix 14f forms a circuit-vector, in particular a column vector. In one embodiment, for which the total number N + M is greater than the number N by one, it is possible to dispense with i, 1-th diodes 24f. 9 shows a further embodiment of the invention. The further
  • Embodiment differs from the previous embodiment, at least substantially with respect to a number N and a number M.
  • 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-vector, in particular a column vector.
  • the total number N + M is greater than the number N by one, it is possible to dispense with i, 1-th diodes 24g.
  • the home appliance device has a number of N
  • the ith return diode 90g is connected to the i-th row switching element 10g.
  • the ith return diode 90g is connected in parallel with the i-th row switching element 10g.
  • a first terminal of the flyback diode 90g is connected to a first terminal of the i-th row switching element 10g.
  • a second terminal of the ith return diode 90g is connected to a second terminal of the i-th row switching element 10g.
  • the ith return diode 90g blocks a current flow in the direction of the reference potential 30g common to the row switching elements 10g.
  • the ith return diode 90g allows current to flow from the direction of the row switching elements 10g
  • Household appliance device having a number of further return diodes 90 g.
  • a jth further flyback diode 90g could be connected in parallel with a jth column switching element 12g. Furthermore, it is possible to dispense with a column diode in the present case.
  • Fig.10 shows another embodiment of the invention.
  • the further means is a single item of the invention.
  • Embodiment differs from the previous embodiment, at least substantially with respect to a number of additional electrical components.
  • the present embodiment differs by a circuit of line diodes 34h.
  • the ith line diode 34h is connected to an i, jth terminal 20h of an i, jth inductor 18h.
  • a first connection of the ith Row diode 34h is connected to the i, jth terminal 20h.
  • a second terminal of the ith line 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 common to the row switching elements 10h
  • the ith line diode 34h allows a current to flow from the direction of the further reference potential 32h common to the row switching elements 10h.
  • Fig.1 shows a further embodiment of the invention.
  • Embodiment differs from the previous embodiment, at least substantially with respect to a number of additional electrical components.
  • the home appliance device has a number N of line capacitances 92k.
  • the i-th row capacitance 92k is connected in parallel with an i-th row switching element 10k.
  • an ith return diode 90k is connected in parallel to an i-th row switching element 10k.
  • a first terminal of the i-th row capacitance 92k is connected to a first terminal of the ith row switching element 10k.
  • a second terminal of the i-th row capacitance 92k is connected to a second terminal of the ith row switching element 10k.
  • Fig.12 shows another embodiment of the invention. The further
  • Embodiment differs from the previous embodiment, at least substantially with respect to a number N and a number M.
  • Total number N + M of row switching elements 10p and column switching elements 12p is one greater than the number ⁇ ⁇ ⁇ of heating matrix elements 16p.
  • the heating matrix 14p forms a circuit-vector, in particular a row vector.
  • 1-th further diodes can be dispensed with.
  • the household appliance device has a number of M further return diodes 91 p.
  • the jth further flyback diode 91p is connected to the jth column switching element 12p.
  • the jth further flyback diode 91p is connected in parallel with the jth column switching element 12p. A first connection of the others
  • the flyback diode 91p is connected to a first terminal of the j-th column switching element 12p.
  • a second terminal of the jth further flyback diode 91p is connected to a second terminal of the jth column switching element 12p.
  • the jth further flyback diode 91p allows current to flow in the direction of the column switching elements 12p common reference potential 32p.
  • the jth 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 may have a number of flyback diodes 90p.
  • An ith return diode 90p could be connected in parallel with an ith row switching element 10p. Furthermore, it is possible to dispense with a line diode in the present case.
  • Fig. 13 shows another embodiment of the invention. The further
  • Embodiment differs from the previous embodiment, at least substantially with respect to a number of additional electrical components.
  • the home appliance device has a number M of column capacitances 93q.
  • the jth column capacitance 93q is connected in parallel with a jth column switching element 12q.
  • a first terminal of the jth column capacitance 93q is connected to a first terminal of the jth column switching element 12q.
  • a second terminal of the jth column capacitance 93q is connected to a second terminal of the jth column switching element 12q.

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

Abstract

La présente invention concerne un appareil électroménager muni d'au moins une unité convertisseuse dans un circuit à demi-ponts ou à ponts complets pour le fonctionnement de plusieurs inducteurs au moyen d'un multiplexeur. Pour améliorer le rendement de l'appareil électroménager, un appareil électroménager, en particulier un appareil de cuisson, selon la présente invention, a au moins un nombre N d'éléments de commutation de ligne (10a-q), au moins un nombre M d'éléments de commutation de colonne (12a-q) et au moins une matrice de chauffage (14a-q) qui comprend au moins un nombre ΝxΜ d'éléments de matrice de chauffage (16a-q). Pour tout i de 1 à N et pour tout j de 1 à M avec un nombre total N+M d'éléments de commutation de ligne (10a-q) et d'éléments de commutation de colonne (12a-q) plus grand que 2, il s'applique que le i, jème élément de matrice de chauffage (16a-q) comprend au moins un i, jème inducteur (18a-q) et qu'il est relié aussi bien au ième élément de commutation de ligne (10a-q) qu'au jème élément de commutation de colonne (12a-q), et à au moins une diode (34a-q, 36a-q) qui relie au moins un des éléments de commutation de ligne (10a-q) ou au moins un des éléments de commutation de colonne (12a-q) à au moins un potentiel de référence (30a-q, 32a-q).
EP17822459.8A 2016-12-19 2017-12-12 Appareil électroménager Active EP3556180B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
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

Publications (2)

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EP3556180A1 true EP3556180A1 (fr) 2019-10-23
EP3556180B1 EP3556180B1 (fr) 2020-11-04

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US (1) US11153940B2 (fr)
EP (1) EP3556180B1 (fr)
CN (1) CN110063090B (fr)
ES (1) ES2673131B1 (fr)
WO (1) WO2018116053A1 (fr)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20190327792A1 (en) 2018-04-23 2019-10-24 Whirlpool Corporation Control circuits and methods for distributed induction heating devices
EP4042834A1 (fr) 2019-10-08 2022-08-17 BSH Hausgeräte GmbH Appareil de cuisson

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DK0862714T3 (da) * 1995-11-21 2003-06-02 Electrolux Ab Madlavningsoverflade med styreorganer
EP0862174A1 (fr) 1997-02-27 1998-09-02 Lite-On Technology Corp. Dispositif de changement de disque pour lecteur de disque optique
IT1319292B1 (it) * 2000-11-08 2003-10-10 Whirlpool Co Dispositivo per rilevare la collocazione di utensili di cottura su unpiano di cottura ad elementi riscaldanti discreti e distribuiti.
ES2567796T3 (es) * 2001-10-12 2016-04-26 Whirlpool Corporation Placa de cocina con elementos de calentamiento discretos distribuidos
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ES2356780B1 (es) * 2009-01-20 2012-03-13 Bsh Electrodomésticos España, S.A. Campo de cocción con al menos una zona de calentamiento de varios elementos de calentamiento.
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ES2586583T3 (es) * 2011-02-21 2016-10-17 Mitsubishi Electric Corporation Cocina de calentamiento por inducción
DE102012201236A1 (de) * 2011-02-25 2012-08-30 BSH Bosch und Siemens Hausgeräte GmbH Hausgerätekalibriervorrichtung
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DE102011087216A1 (de) 2011-11-28 2013-05-29 BSH Bosch und Siemens Hausgeräte GmbH Kochfeld
CN104604330A (zh) * 2012-10-25 2015-05-06 松下知识产权经营株式会社 感应加热装置
EP2779788B1 (fr) * 2013-03-11 2015-08-19 Electrolux Appliances Aktiebolag Procédé permettant d'attribuer des bobines d'induction d'une table de cuisson par induction et table de cuisson par induction
EP3028540B1 (fr) 2013-08-02 2020-03-11 BSH Hausgeräte GmbH Ensemble table de cuisson
CN104754789B (zh) * 2013-12-25 2016-08-17 美的集团股份有限公司 智能识别锅具大小的电磁加热装置及其控制方法
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PL3170363T3 (pl) * 2014-07-15 2018-10-31 Arçelik Anonim Sirketi Układ i sposób zmniejszania szumu generowanego przez wielostrefową kuchenkę indukcyjną zasilaną falownikiem quasi-rezonansowym
DE102014224051A1 (de) 2014-11-25 2016-05-25 E.G.O. Elektro-Gerätebau GmbH Induktionskochfeld und Verfahren zur Steuerung eines Induktionskochfelds
CN205454134U (zh) 2016-04-09 2016-08-10 诸暨市知联电子科技有限公司 一种电磁感应加热的蒸煮系统

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WO2018116053A1 (fr) 2018-06-28
CN110063090A (zh) 2019-07-26
US11153940B2 (en) 2021-10-19
EP3556180B1 (fr) 2020-11-04
ES2673131A1 (es) 2018-06-19
ES2673131B1 (es) 2019-03-28
CN110063090B (zh) 2021-06-08
US20190274190A1 (en) 2019-09-05

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