EP3337293A1 - Dispositif d'appareil de cuisson et procédé destiné au fonctionnement d'un appareil de cuisson - Google Patents

Dispositif d'appareil de cuisson et procédé destiné au fonctionnement d'un appareil de cuisson Download PDF

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Publication number
EP3337293A1
EP3337293A1 EP17203736.8A EP17203736A EP3337293A1 EP 3337293 A1 EP3337293 A1 EP 3337293A1 EP 17203736 A EP17203736 A EP 17203736A EP 3337293 A1 EP3337293 A1 EP 3337293A1
Authority
EP
European Patent Office
Prior art keywords
unit
heating
cooking appliance
converter
cooking
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP17203736.8A
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German (de)
English (en)
Inventor
Pablo Jesus Hernandez Blasco
Ignacio Lope Moratilla
Oscar Lucia Gil
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
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 EP3337293A1 publication Critical patent/EP3337293A1/fr
Pending legal-status Critical Current

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    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/02—Induction heating
    • H05B6/06—Control, e.g. of temperature, of power
    • H05B6/062—Control, e.g. of temperature, of power for cooking plates or the like
    • 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

Definitions

  • the invention relates to a cooking device device according to the preamble of claim 1 and to a method for operating a cooking device device according to claim 14.
  • cooking appliance devices designed as induction hobs which comprise a heating device with at least one inductor, at least one resonance capacitor associated with the inductor and at least one inverter.
  • a heating device with at least one inductor, at least one resonance capacitor associated with the inductor and at least one inverter.
  • current transformers and / or measuring resistors are used as a rule.
  • the object of the invention is in particular to provide a generic device with improved properties in terms of efficiency.
  • the object is solved by the characterizing features of claim 1 and the features of claim 14, while advantageous embodiments and further developments of the invention can be taken from the subclaims.
  • the invention is based on a cooking device device, in particular a hob device and advantageously an induction hob device, with at least one heating device, which comprises at least one heating unit, at least one resonance unit associated with the heating unit and at least one inverter, which is provided to provide at least one heating current.
  • the cooking appliance device comprises at least one measuring device which is provided to detect a capacitance voltage of the resonant capacitance for determining the heating current in at least one operating state and to provide a measured signal correlated with the heating current based on the capacitance voltage, in particular for, advantageously direct, Evaluation and / or monitoring of the heating current.
  • a measuring device which is provided to detect a capacitance voltage of the resonant capacitance for determining the heating current in at least one operating state and to provide a measured signal correlated with the heating current based on the capacitance voltage, in particular for, advantageously direct, Evaluation and / or monitoring of the heating current.
  • a "cooking device device” is to be understood as meaning, in particular, at least one part, in particular a subassembly, of a cooking appliance, in particular an oven and / or, advantageously, a cooktop.
  • the cooking appliance is designed as an induction cooking appliance, in particular as an induction baking oven and / or advantageously as an induction hob.
  • a “heating device” should also be understood to mean in particular a circuit and / or a unit which is provided to heat at least one food item and / or cooking utensil and / or to provide a heating power for heating at least one item to be cooked and / or cooked.
  • the heating unit has in particular a heating element, preferably designed as an inductor, and is advantageously provided to heat the food and / or the cooking utensils by means of eddy current and / or magnetic reversal effects.
  • the heating unit can also comprise a plurality, in particular at least two, at least three and / or at least four, heating elements and / or at least one switching arrangement, in particular for switching on, switching off and / or switching over the heating elements.
  • the inverter is in particular provided to the heating current, in particular an oscillating electric current, preferably with a switching frequency of at least 1 kHz, advantageously of at least 10 kHz and more preferably of at least 20 kHz and / or of at most 160 kHz, advantageously of at most 120 kHz and particularly advantageously of at most 80 kHz, in particular for operation of the heating unit, to provide and / or to produce.
  • the resonance capacitance is advantageously designed as a resonance capacitor and, in particular in at least one operating state with the heating unit, forms at least part of an electrical oscillating circuit and / or preferably an electrical oscillating circuit.
  • the resonance capacitance has the capacitance voltage in at least one operating state and / or is provided for providing the capacitance voltage.
  • a "capacitance voltage” should be understood as meaning, in particular, a voltage stored in a capacitor, in particular the resonant capacitance, and / or a voltage dropping across the capacitor, in particular the resonant capacitance.
  • the capacitance voltage can be defined in particular a voltage between two Potential values and / or a voltage between a defined potential value and a, preferably earthed, ground potential correspond.
  • an object is assigned to another object, it should be understood in particular that in at least one operating state at least one, preferably direct, electrically conductive connection exists between the object and the further object.
  • a “measuring device” is to be understood as meaning, in particular, a circuit and / or unit which is in operative connection, in particular with the use of the capacitance voltage, of a measuring signal correlated with the heating current and / or to provide, in particular at least for a determination of at least one value of the heating current and / or advantageous for determining a, in particular temporal, course of the heating current.
  • the measuring device is electrically connected to the heater.
  • a "measuring signal correlated with the heating current” should be understood as meaning in particular a measuring signal, in particular a current signal and / or advantageously a voltage signal, by means of which at least one value of the heating current and / or advantageously one, in particular temporal, course of the heating current is determined can and / or, which at least one value of the heating current and / or advantageously a, in particular temporal course of the heating current, advantageously directly, maps.
  • the measurement signal can also correspond to the heating current.
  • the cooking appliance device may comprise at least one further unit, in particular at least one detection unit, at least one evaluation unit and / or advantageously an arithmetic unit, which may in particular be provided at least for detection, processing, further processing and / or evaluation of the measurement signal.
  • a "computing unit” is to be understood as meaning in particular an electrical and / or electronic unit, which in particular has an information input, an information processing and an information output.
  • the arithmetic unit further comprises at least one processor, at least one memory, at least one input and / or output means, at least one operating program, at least one control routine, at least one control routine and / or at least one calculation routine.
  • the arithmetic unit at least on the basis of the measurement signal to close at least one value of the heating current and / or advantageously a, in particular temporal course of the heating current and / or at least determine a value of the heating current and / or advantageously a, in particular temporal, course of the heating current, advantageously directly.
  • the arithmetic unit can be provided to determine further variables of the cooking appliance device on the basis of the measuring signal, for example a power output of the heating unit.
  • the arithmetic unit is further provided to control and / or regulate an operation of the cooking appliance device, in particular of the inverter.
  • a cooking appliance apparatus having improved properties in terms of efficiency, in particular, time efficiency, measurement efficiency, power efficiency, component efficiency, space efficiency and / or cost efficiency can be provided.
  • a measurement accuracy in particular by using a resonance capacity with a precise capacitance value and / or due to an advantageously simple calibration of the resonance capacity, can be improved.
  • additional components such as voltage and / or current meter units, which can be advantageously saved space and / or costs can be reduced.
  • a control algorithm of the cooking device device can be simplified and / or reliability can be improved.
  • the measuring signal is a voltage signal correlated with the heating current, whereby in particular an advantageously simple measurement and / or further processing of the measuring signal can be achieved.
  • the measurement signal is proportional to the heating current, in particular a profile of the heating current, in particular an advantageously simple and / or direct evaluation of the heating current can be achieved, wherein the use of complicated calculation algorithms can advantageously be dispensed with.
  • the measuring device comprises at least one converter unit, which, in particular for generating the measuring signal, is provided for at least partial conversion, in particular reshaping and / or adaptation, of the capacitance voltage. In this way, in particular, an advantageously direct determination of the heating current can be achieved.
  • the transducer unit could be contactlessly connected to the resonant capacitance and / or connected in series with the resonant capacitance while being integrated into, for example, a circuit of the heater.
  • the converter unit is connected at least partially parallel to the resonance capacitance, whereby in particular an advantageously reliable measurement can be achieved, in particular since an operating current in the measuring device and / or at least the converter unit is advantageous at least in comparison to a current intensity in the heating device is reduced.
  • the converter unit is designed as a differentiator and the measurement signal corresponds in particular to a time derivation of the capacitance voltage, in particular generated by means of the converter unit.
  • the measurement signal corresponds in particular to a time derivation of the capacitance voltage, in particular generated by means of the converter unit.
  • the converter unit may in particular be actively configured and in particular comprise at least one operational amplifier.
  • the transducer unit is made passive.
  • An "active object” is to be understood in particular as an object which is intended to be actively controlled and / or controlled and / or which requires at least one supply voltage for operation.
  • a "passive object” should be understood to mean, in particular, an object which, in particular during operation and / or in an operating state, is free from a drive possibility and / or a supply voltage.
  • an advantageously efficient converter unit can be provided.
  • advantageously a fatigue strength and / or a service life of the cooking appliance device can be increased.
  • the converter unit could, for example, be designed as an inductive converter unit and / or comprise at least one inductor.
  • the converter unit is designed as a capacitive converter unit.
  • the converter unit comprises at least one converter capacitor and advantageously a converter capacitor.
  • the converter unit is particularly preferred as the converter unit as RC member formed.
  • the converter unit define a converter limit frequency which is at least 3 times, advantageously at least 5 times, preferably at least 10 times and particularly preferably at least 20 times the switching frequency of the inverter the previously mentioned switching frequency of the inverter corresponds.
  • a "converter limit frequency” should be understood as meaning, in particular, a cutoff frequency of the converter unit above or below which signal frequencies, in particular the capacitance voltage, are at least partially blocked and / or attenuated and / or above or below which signal frequencies, in particular the capacitance voltage. at least partially free of conversion by the transducer unit. In this way, in particular, an advantageously high measuring accuracy can be achieved.
  • the measuring device comprises at least one filter unit, which is intended to at least partially reduce noise and / or signal noise.
  • the filter unit is preferably connected in parallel to the converter unit.
  • the filter unit is preferably connected upstream of the converter unit and provided in particular for filtering the capacitance voltage.
  • the filter unit is advantageously arranged between the resonance capacitor and the converter unit.
  • the filter unit of the converter unit can be connected downstream and be provided in particular for filtering the measurement signal.
  • the filter unit is preferably arranged between the converter unit and a further unit of the cooking appliance device, advantageously the aforementioned further unit.
  • the measuring device may comprise at least two filter units.
  • the cooking device device comprises a decoupling unit, which is provided to the heating device and the Galvanically separate the measuring device from each other.
  • the decoupling unit can be designed as any decoupling unit, such as, for example, as an inductive decoupling unit, as an optical decoupling unit and / or as a capacitive decoupling unit.
  • the decoupling unit comprises at least one decoupling capacity.
  • the decoupling unit can also be designed as decoupling capacity.
  • the cooking device device comprises a matching unit, in particular a measuring range adjusting unit, which is provided to superimpose the measuring signal with a constant offset signal, advantageously an offset voltage.
  • the measuring device can include the matching unit. In this way, in particular an advantageous adaptation of a measuring range can be achieved.
  • a method for operating a cooking device device which has at least one heating unit, which comprises at least one heating unit, at least one heating unit associated resonance capacity and at least one inverter, which is intended to provide at least one heating current, wherein a determination of the heating current, in particular by means of a measuring device, detected in at least one operating state, a capacitance voltage of the resonant capacitor and based on the capacitance voltage correlated with the heating current measuring signal is provided, in particular for, advantageously direct, evaluation and / or monitoring of the heating current.
  • an efficiency in particular a time efficiency, a measurement efficiency, a power efficiency, a component efficiency, a construction space efficiency and / or a cost efficiency can be improved.
  • a measurement accuracy in particular by using a resonance capacity with a precise capacitance value and / or due to an advantageously simple calibration of the resonance capacity, can be improved.
  • additional components such as voltage and / or current meter units, which can be advantageously saved space and / or costs can be reduced.
  • a control algorithm of the cooking device device can be simplified and / or reliability can be improved.
  • the cooking device device and the method for operating the cooking appliance device should not be limited to the application and embodiment described above.
  • the cooking appliance apparatus and the method for operating the cooking apparatus apparatus for performing a function described herein may have a different number from a number of individual elements, components and units mentioned herein.
  • FIG. 1 shows an example as a hob, in the present case in particular as an induction hob, trained cooking appliance 32a in a schematic plan view.
  • the cooking appliance 32a is provided for heating at least one item of food and / or cooking utensils (not shown).
  • a cooking appliance could also be designed as an oven and preferably as an induction oven.
  • the cooking appliance 32a comprises a cooking device device.
  • the cooking appliance device has an operating unit 34a.
  • the operating unit 34a serves to input and / or select various parameters, such as a power level, by a user.
  • the cooking appliance device further comprises a computing unit 36a.
  • the arithmetic unit 36a has a processor, a memory and a memory in the Memory stored operating program, which is intended to be executed by the processor.
  • FIG. 2 shows a schematic diagram of the cooking appliance device.
  • the cooking appliance device comprises a power source 38a.
  • the energy source 38a is formed in the present case by way of example as a grid connection.
  • the cooking appliance device comprises a rectifier unit (not shown).
  • the rectifier unit is intended to rectify a mains voltage of the energy source 38a and to supply it to an energy storage unit 40a of the cooking appliance device.
  • an energy source other than a mains connection in particular a voltage source.
  • the cooking appliance device comprises a heating device 10a.
  • the heater 10a is operatively connected to the power source 38a.
  • the heating device 10a is provided to provide a heating power in at least one operating state, in particular for heating the food and / or cooking utensils.
  • the heater 10a has a heating unit 12a.
  • the heating unit 12a comprises by way of example exactly one heating element.
  • the heating element is designed as an inductor.
  • the heating unit 12a is associated with at least one heating zone in the present case.
  • the heating unit 12a is provided for immediate heating of the food and / or the cooking utensils by eddy current and / or Ummagnetmaschines bine.
  • a heating unit comprises a plurality of heating elements, advantageously designed as inductors, and / or a switching arrangement for switching between the heating elements.
  • at least one heating element of a heating unit and / or all heating elements of a heating unit could also be designed as a heating resistor.
  • the heater 10a includes an inverter 18a.
  • the inverter 18a includes two inverter switches 42a, 44a.
  • the inverter switches 42a, 44a are identical to each other.
  • the inverter switches 42a, 44a are bidirectional, formed unipolar semiconductor switch.
  • Each of the inverter switches 42a, 44a in the present case comprises an inverter switching element designed as an IGBT.
  • Each of the inverter switches 42a, 44a is electrically connected to a center tap 46a of the inverter 18a.
  • the inverter 18a is provided to a pulsating rectified line voltage of the power storage unit 40a in a high-frequency heating current i 0 convert to provide at the center tap 46 and in particular the heating unit supply 12a.
  • a switching frequency of the inverter 18a in the present case is between 10 kHz and 100 kHz and advantageously between 20 kHz and 80 kHz.
  • inverter switches differently and / or to use a diode and / or buffer capacitor connected in parallel with an inverter switching element.
  • at least one inverter switch could also comprise an inverter switching element designed as a transistor, FET and / or MOSFET.
  • the heating device 10a comprises at least one resonance capacitor 14a, 16a.
  • the cooking appliance device comprises by way of example two resonance capacitances 14a, 16a, in particular a first resonant capacitance 14a and a second resonant capacitance 16a, wherein each of the resonant capacitances 14a, 16a cooperates with at least one of the inverter switches 42a, 44a.
  • the resonance capacitances 14a, 16a are of identical construction.
  • the resonance capacitances 14a, 16a are each designed as a capacitor.
  • the resonance capacitances 14a, 16a each have a capacitance value of 520 nF in the present case.
  • the resonance capacitances 14a, 16a are associated with the heating unit 12a.
  • the resonance capacitances 14a, 16a are connected to the heating unit 12a.
  • the term "connected” should be understood to mean here and below, in particular directly, electrically connected. Accordingly, the resonance capacitances 14a, 16a are each part of an electrical resonant circuit and can be charged via the inverter 18a. In principle, however, a heating device could also have exactly one resonance capacity. In addition, it is conceivable to form resonance capacities different from each other.
  • a first terminal of the inverter 18a is connected to a first terminal of the energy storage unit 40a. Furthermore, the first port of the Inverter 18a connected to a first terminal of the first resonant capacitor 14a. A second terminal of the inverter 18a is connected to a second terminal of the energy storage unit 40a. Further, the second terminal of the inverter 18a is connected to a second terminal of the second resonance capacitance 16a.
  • the center tap 46a of the inverter 18a is connected to a first terminal of the heating unit 12a.
  • a second terminal of the heating unit 12a is connected to a second terminal of the first resonance capacitor 14a. Further, the second terminal of the heating unit 12a is connected to a first terminal of the second resonance capacitance 16a.
  • the heating unit 12a is disposed in the bridge branch between the center tap 46a and the resonance capacitances 14a, 16a.
  • the heating unit 12a is operated in the present case in a half-bridge circuit. Alternatively, it is conceivable to operate a heating unit in a full bridge circuit.
  • the cooking device device comprises a measuring device 20a.
  • the measuring device 20a is in operative connection with the heating device 10a, in the present case in particular the second resonance capacity 16a.
  • the measuring device 20a is connected to the heating device 10a, in particular the second resonance capacity 16a.
  • the measuring device 20a is in operative connection with the arithmetic unit 36a.
  • the measuring device 20a is connected to the arithmetic unit 36a.
  • the measuring device 20a is for a determination of the heating current io, in the present case in particular a time course of the heating current io, provided.
  • the measuring device 20a is provided to engage in at least one operating state, a capacitor voltage V c of the second resonance capacitor 16a to capture and provide the basis of the capacitor voltage V c of the second resonant capacitor 16a with the heating current io correlated measurement signal S.
  • the measuring signal S is a voltage signal correlated with the heating current io.
  • the measurement signal S in the present case is proportional to the heating current i 0 .
  • the arithmetic unit 36a may also comprise, for example, an analog-to-digital converter connected downstream of the measuring device 20a.
  • a measuring device could also be provided with one, in particular one Computing unit deviating further unit of a Garellavorraum be connected, such as with a detection unit, a measuring unit and / or an evaluation unit.
  • a measuring device could additionally or alternatively also be connected to a first resonance capacity.
  • a measuring signal of a measuring device could also correspond to a current signal.
  • a cooking appliance device in principle, in particular in addition to a measuring device, further measuring units, in particular voltage and / or current measuring units include, in particular to increase reliability. However, a cooking appliance device is preferably free of further measuring units.
  • the measuring device 20 a comprises a converter unit 22 a.
  • the converter unit 22a is connected in parallel with the second resonance capacity 16a. In the present case, the converter unit 22a directly adjoins the second resonance capacitor 16a, in particular in such a way that no further components are arranged between the converter unit 22a and the second resonance capacitor 16a.
  • the converter unit 22a is designed as a differentiator.
  • the converter unit 22a is also passive in the present case and in particular free of active components.
  • the converter unit 22a is designed as a capacitive converter unit.
  • the converter unit 22a is further designed as an RC element.
  • the converter unit 22a is provided for at least partial conversion of the capacitance voltage v c of the second resonance capacitance 16a.
  • the converter unit 22a comprises at least one converter capacitor 48a.
  • the converter unit 22a comprises exactly one converter capacity 48a.
  • the converter capacitor 48a is designed as a capacitor.
  • the converter capacitance 48a has a capacitance value between 10 nF and 0.1 pF and advantageously between 1 nF and 1 pF.
  • the converter capacity 48a has, for example, a capacitance value of 33 pF.
  • the converter unit 22a comprises at least one converter resistor 50a.
  • the converter unit 22a comprises exactly one converter resistor 50a.
  • the transducer resistor 50a corresponds to a measuring resistor.
  • the transducer resistor 50a is connected in parallel with the second resonant capacitor 16a.
  • One above the Transformer resistance 50a falling voltage in the present case corresponds to the measurement signal S.
  • the transducer resistor 50a has a resistance value between 100 k ⁇ and 10 ⁇ and advantageously between 10 k ⁇ and 100 ⁇ .
  • the converter resistor 50a has, for example, a resistance value of 1.6 k ⁇ .
  • a first terminal of the converter capacitor 48a is connected to the second terminal of the first resonant capacitor 14.
  • the first terminal of the converter capacitor 48a is also connected to the second terminal of the heating unit 12a.
  • the second terminal of the converter capacitor 48a is connected to the first terminal of the second resonant capacitor 16a.
  • a second terminal of the converter capacitance 48a is connected to a first terminal of the converter resistor 50a.
  • the second terminal of the converter capacity 48a is connected to a first terminal of the arithmetic unit 36a.
  • a second terminal of the converter resistor 50a is connected to the second terminal of the second resonant capacitor 16a.
  • the second terminal of the converter resistor 50a is further connected to a second terminal of the arithmetic unit 36a.
  • a converter unit could also comprise a plurality of converter capacities and / or converter resistors.
  • a converter unit could also be actively configured and comprise, for example, at least one operational amplifier.
  • a converter unit could in principle also comprise at least one additional inductor.
  • the converter unit 22a is provided in the present case to a time derivative of the capacitance voltage V c of the second resonant capacitor 16a.
  • V c capacitance voltage
  • C 2 corresponds to the capacitance value of the second resonance capacitance 16 a.
  • the converter unit 22a defines a converter limit frequency f c , which corresponds to at least 20 times the switching frequency of the inverter 18a.
  • f c 1 / 2 ⁇ ⁇ R d ⁇ C d
  • R d corresponds to the resistance value of the converter resistor 50 a and C d corresponds to the capacitance value of the converter capacitor 48 a.
  • the converter limit frequency f c is selected such that at least the first five harmonics of the switching frequency of the inverter 18a can be detected.
  • FIG. 3 shows an example of a diagram of some signals of Garellavorraum.
  • An ordinate axis 52a is shown as a size axis.
  • the measurement signal S and the capacitance voltage v c of the second resonance capacitance 16a are shown in volts.
  • An abscissa axis 54a shows the time in milliseconds.
  • a curve 56a illustrates a time profile of the measurement signal S.
  • a curve 58a illustrates a time profile of the capacitance voltage v c of the second resonance capacitance 16a. Due to the time derivative, the measurement signal S has a phase shift relative to the capacitance voltage v c of the second resonance capacitance 16 a.
  • FIG. 4 shows by way of example a further diagram of some signals of the cooking appliance device.
  • a course of the measurement signal S compared to a course of the heating current io.
  • An ordinate axis 60a is shown as a size axis.
  • the time in milliseconds is shown on an abscissa axis 62a.
  • the curve 56a in turn illustrates the time profile of the measurement signal S.
  • a curve 64a illustrates a time profile of the heating current io.
  • the measurement signal S thus forms a course of the heating current i 0 directly.
  • FIGS. 5 to 7 Further embodiments of the invention are shown. The following descriptions and the drawings are essentially limited to the differences between the exemplary embodiments, with reference in principle to the same reference components, in particular with respect to components with the same reference numerals, to the drawings and / or the description of the other embodiments, in particular FIGS. 1 to 4 , can be referenced.
  • To distinguish the embodiments of the letter a is the reference numerals of the embodiment in the FIGS. 1 to 4 readjusted.
  • the letter a is replaced by the letters b to d.
  • FIG. 5 a further embodiment of the invention is shown.
  • the reference numerals of the embodiment of the FIG. 5 the letter b is added.
  • the further embodiment of the FIG. 5 differs from the previous embodiment, at least substantially by an embodiment of a measuring device 20b.
  • the measuring device 20b comprises at least one filter unit 24b, 26b.
  • the measuring device 20b comprises two filter units 24b, 26b.
  • the filter units 24b, 26b are at least substantially identical in construction.
  • the filter units 24b, 26b are passive and in particular free of active components.
  • the filter units 24b, 26b are designed as low-pass filters.
  • the filter units 24b, 26b are connected in parallel with each other.
  • the filter units 24b, 26b are also connected in parallel to a converter unit 22b and to a second resonant capacitor 16b.
  • a first filter unit 24b of the filter units 24b, 26b is connected upstream of the converter unit 22b.
  • the first filter unit 24b is arranged between the second resonance capacitance 16b and the converter unit 22b.
  • the first filter unit 24b is provided for filtering a capacitance voltage v c of the second resonance capacitance 16b.
  • the first filter unit 24b comprises a first filter resistor 66b and a first filter capacitor 68b, in particular arranged parallel to the second resonant capacitor 16b.
  • a second filter unit 26b of the filter units 24b, 26b is connected downstream of the converter unit 22b.
  • the second filter unit 26b is arranged between the converter unit 22b and a further unit of the cooking appliance device.
  • the second filter unit 26b is provided for filtering a measurement signal S, in particular generated by the converter unit 22b.
  • the second filter unit 26b comprises a second filter resistor 70b and a second filter capacitor 72b, in particular arranged parallel to the second resonant capacitor 16b.
  • a measuring device could also have exactly one filter unit, in particular a first filter unit or a second filter unit, and / or at least three filter units. It is also conceivable to design at least one filter unit as a bandpass filter.
  • FIG. 6 a further embodiment of the invention is shown.
  • the reference numerals of the embodiment of the FIG. 6 the letter c is adjusted.
  • a cooking appliance device further comprises a decoupling unit 28c.
  • the decoupling unit 28c is designed as a capacitive decoupling unit.
  • the decoupling unit 28c is provided to galvanically separate a heating device 10c and a measuring device 20c from each other.
  • the decoupling unit 28c comprises at least one decoupling capacitance 74c.
  • the decoupling unit 28c comprises exactly one decoupling capacitance 74c.
  • the decoupling capacitance 74c is designed as a decoupling capacitor.
  • the decoupling capacitance 74c is connected in parallel with a converter capacitance 48c of a converter unit 22c.
  • a first terminal of the decoupling capacitance 74c is connected to a second terminal of a second resonant capacitance 16c.
  • a second terminal of the decoupling capacitance 74c is connected to a second terminal of a converter resistor 50c of the converter unit 22c.
  • FIG. 7 a further embodiment of the invention is shown.
  • the reference numerals of the embodiment of the FIG. 7 the letter d is added.
  • a cooking appliance device further comprises a fitting unit 30d.
  • the adapting unit 30d is formed as a measuring range adjusting unit.
  • the adaptation unit 30d is provided for superimposing a measurement signal S produced in particular by a converter unit 22d with a constant offset signal, in the present case in particular an offset voltage.
  • the adaptation unit 30d comprises at least one matching resistor 76d.
  • the matching unit 30d comprises exactly one matching resistor 76d.
  • the matching resistor 76d is connected in series with a converter resistor 50d of the converter unit 22d.
  • a matching resistor could also be designed as a variable matching resistor, for example as a potentiometer.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Induction Heating Cooking Devices (AREA)
EP17203736.8A 2016-12-13 2017-11-27 Dispositif d'appareil de cuisson et procédé destiné au fonctionnement d'un appareil de cuisson Pending EP3337293A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ES201631581A ES2673100B1 (es) 2016-12-13 2016-12-13 Dispositivo de aparato de cocción y procedimiento para la puesta en funcionamiento de un dispositivo de aparato de cocción

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EP3337293A1 true EP3337293A1 (fr) 2018-06-20

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EP17203736.8A Pending EP3337293A1 (fr) 2016-12-13 2017-11-27 Dispositif d'appareil de cuisson et procédé destiné au fonctionnement d'un appareil de cuisson

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EP (1) EP3337293A1 (fr)
ES (1) ES2673100B1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2437573A1 (fr) * 2009-05-26 2012-04-04 Mitsubishi Electric Corporation Dispositif de cuisson par induction et procédé de chauffage par induction
EP3030041A1 (fr) * 2014-12-03 2016-06-08 BSH Hausgeräte GmbH Dispositif de plaque de cuisson et procédé destiné au fonctionnement d'une plaque de cuisson
DE102016202775A1 (de) * 2015-03-18 2016-09-22 BSH Hausgeräte GmbH Gargerätevorrichtung und Verfahren zum Betrieb einer Gargerätevorrichtung

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4820891A (en) * 1986-11-29 1989-04-11 Kabushiki Kaisha Toshiba Induction heated cooking apparatus
GB2342723B (en) * 1998-10-15 2002-09-18 Edgcumbe Instr Ltd Electrical test apparatus
GB2530716A (en) * 2014-09-09 2016-04-06 Robert William Moore Cascade circuit tester

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2437573A1 (fr) * 2009-05-26 2012-04-04 Mitsubishi Electric Corporation Dispositif de cuisson par induction et procédé de chauffage par induction
EP3030041A1 (fr) * 2014-12-03 2016-06-08 BSH Hausgeräte GmbH Dispositif de plaque de cuisson et procédé destiné au fonctionnement d'une plaque de cuisson
DE102016202775A1 (de) * 2015-03-18 2016-09-22 BSH Hausgeräte GmbH Gargerätevorrichtung und Verfahren zum Betrieb einer Gargerätevorrichtung

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Publication number Publication date
ES2673100B1 (es) 2019-03-28
ES2673100A1 (es) 2018-06-19

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