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EP3560279B1 - Dispositif pour appareil de cuisson - Google Patents

Dispositif pour appareil de cuisson Download PDF

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Publication number
EP3560279B1
EP3560279B1 EP17822461.4A EP17822461A EP3560279B1 EP 3560279 B1 EP3560279 B1 EP 3560279B1 EP 17822461 A EP17822461 A EP 17822461A EP 3560279 B1 EP3560279 B1 EP 3560279B1
Authority
EP
European Patent Office
Prior art keywords
operating state
heating
control unit
heating element
cooking appliance
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
EP17822461.4A
Other languages
German (de)
English (en)
Other versions
EP3560279A1 (fr
Inventor
Sergio Llorente Gil
Dan Neumayer
Carlos Obon Abadia
Jose Manuel Palacios Gasós
Edgar Jorge RAMIREZ LABOREO
Fernando Sanz Serrano
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BSH Hausgeraete GmbH
Original Assignee
BSH Hausgeraete GmbH
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 EP3560279A1 publication Critical patent/EP3560279A1/fr
Application granted granted Critical
Publication of EP3560279B1 publication Critical patent/EP3560279B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • H05B6/10—Induction heating apparatus, other than furnaces, for specific applications
    • H05B6/12—Cooking devices
    • H05B6/129—Cooking devices induction ovens
    • 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
    • H05B1/0227—Applications
    • H05B1/0252—Domestic applications
    • H05B1/0258—For cooking
    • H05B1/0261—For cooking of food
    • H05B1/0263—Ovens
    • 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 an induction cooking device according to claim 1.
  • a cooking appliance device with a heating element is already known from the prior art, which heats an object in a heating operating state.
  • the heating element is designed as an induction heating element and is part of a cooking appliance designed as a cooktop, which has the cooking appliance device.
  • a sensor unit detects three electrical parameters outside of the heating operating state, namely an electric current flowing through the heating element in the heating operating state, an electrical voltage present at the heating element in the heating operating state and an electrical power supplied to the system in the heating operating state. Outside the heating operating state, the sensor unit transmits the detected electrical parameters to a control unit, which then determines a temperature of the object heated by the heating element.
  • a control unit which then determines a temperature of the object heated by the heating element.
  • an induction cooking appliance according to the preamble of claim 1 is known.
  • the documents DE 198 52 617 A1 and JP 2006 228541A disclose further prior art induction cooking devices.
  • the object of the invention is in particular to provide a generic device with improved properties with regard to temperature determination.
  • the object is achieved according to the invention by the features of claim 1, while advantageous refinements and developments of the invention can be found in the dependent claims.
  • An induction cooking appliance device is proposed, preferably an induction oven device, with at least one heating element, which is provided in at least one heating operating state for heating at least one object, and with a control unit, which is provided in the heating operating state from an impedance of the heating element and the Object comprehensive system to determine a temperature of the heated object by the heating element.
  • a “cooking appliance device”, namely an “induction cooking appliance device”, advantageously an “oven device” and preferably an “induction oven device”, should in particular mean at least a part, in particular a subassembly, of a cooking appliance, specifically an induction cooking appliance, advantageously an oven and preferably an induction oven.
  • a die Cooking appliance device having cooking appliance as a grill and/or as a steamer and/or as a microwave oven and/or as a hob and/or as an oven.
  • a “heating element” should be understood to mean an element which is intended to convert electrical energy into heat and, in particular, to supply it to at least one object to be heated.
  • the heating element is designed as an induction heating element and is preferably intended to generate an electromagnetic alternating field, in particular with a frequency between 17 kHz and 150 kHz, which is intended in particular to be heated in an object that is to be heated, in particular a metal, preferably ferromagnetic, by eddy current induction and/or Magnetic reversal effects to be converted into heat.
  • the object to be heated could be, for example, a cooking utensil, which could be provided in particular for being placed on a hob plate of a hob.
  • the object to be heated could be a cooking utensil, for example, which could be intended to be placed in a cooking chamber of a cooking appliance, such as an oven.
  • the object to be heated consists in particular at least partially and advantageously at least to a large extent of a metal, in particular a ferromagnetic one. At least “to a large extent” should be understood to mean in particular a proportion of at least 70%, in particular at least 80%, advantageously at least 90% and preferably at least 95%.
  • the cooking appliance device has at least one supply unit.
  • the supply unit is intended in particular for connection to at least one mains power supply and/or to at least one household network, in particular to at least one phase of the mains power supply and/or the household network.
  • the supply unit in the heating operating state, provides at least one high-frequency alternating current for the heating element, which is designed in particular as an induction heating element.
  • the supply unit has in particular at least one inverter which, in the heating operating state, generates in particular the high-frequency alternating current for the heating element, which is in particular designed as an induction heating element.
  • heating operating state is to be understood in particular as a state in which the control unit operates the heating element and this, in particular, object to be heated is heated.
  • control unit controls the supply unit in the heating operating state and, by means of the supply unit, supplies electrical energy in the form of at least one high-frequency alternating current to the heating element designed as an induction heating element.
  • 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 cooking appliance, in particular an induction cooking appliance, advantageously a baking oven and preferably an induction baking oven, and which is preferably provided for this purpose to control and/or regulate at least the supply unit and/or the heating element.
  • the control unit comprises an arithmetic unit and, in particular, in addition to the arithmetic unit, a memory unit with a control and/or regulation program stored therein, which is intended to be executed by the arithmetic unit.
  • the control unit is intended to determine the temperature of the object heated by the heating element during the heating of the object and in particular while avoiding switching off the supply unit and/or interrupting the heating of the object.
  • Provided should be understood to mean, in particular, specially programmed, designed and/or equipped.
  • the fact that an object is provided for a specific function is to 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.
  • the configuration according to the invention makes it possible to achieve particularly advantageous properties with regard to temperature determination. Furthermore, in particular, a high level of operating convenience can be achieved.
  • the temperature of the object can be determined precisely, as a result of which, in particular, simple control and/or little programming effort for the control unit and/or high performance can be achieved.
  • there is no need to detect the temperature of the object by means of at least one temperature sensor, for example by means of at least one infrared sensor and/or by means of at least one resistance sensor.
  • Indirect determination of the temperature of the object makes it possible in particular to dispense with at least one temperature sensor, as a result of which in particular low costs and/or low storage can/can be made possible.
  • a high level of accuracy can be achieved independently of a value for the temperature of the object, since the accuracy is restricted, for example, by a restricted measurement range at least one sensor unit and/or at least one temperature sensor can be avoided.
  • control unit is provided to take into account a frequency with which the control unit operates the heating element in the heating operating state when determining the temperature.
  • the frequency is at least essentially and advantageously exactly identical to a frequency of the high-frequency alternating current, which the supply unit provides in particular in the heating operating state. In this way, in particular, errors due to fluctuations in the frequency that have not been taken into account can be avoided and/or a particularly precise determination of the temperature can be made possible.
  • the cooking appliance device has at least one sensor unit, which is intended to detect at least one electrical parameter in the heating operating state and to transmit at least one sensor parameter characterizing the detected parameter to the control unit for determining the temperature.
  • a “sensor unit” is to be understood in particular as meaning at least one unit which has at least one detector for detecting at least the electrical parameter and which is provided to output at least one sensor parameter characterizing the detected parameter.
  • the sensor unit has at least one transmission module, which is provided to transmit the sensor parameter to the control unit, in particular to at least one reception module of the control unit, in the heating operating state.
  • the control unit has at least one receiving module, which is provided to receive the sensor parameter in the heating operating state from the sensor unit, in particular from the transmission module of the sensor unit.
  • the control unit is provided in particular for determining the impedance of the system comprising the heating element and the object from the sensor parameter received from the sensor unit and in particular for determining the temperature of the object heated by the heating element from this impedance.
  • additional sensor units and/or temperature sensors can be dispensed with, as a result of which, in particular, low costs and/or low complexity can/can be achieved.
  • the sensor unit could be provided to detect the frequency with which the control unit operates the heating element in the heating operating state in the heating operating state.
  • the electrical parameter could in particular be the frequency with which the control unit operates the heating element in the heating mode.
  • the control unit specifies the frequency in the heating operating state and, in particular, uses the frequency specified by the control unit in the heating operating state to determine the temperature of the object.
  • the sensor unit is preferably provided to detect the electrical current flowing through the heating element in the heating operating state and/or the electrical voltage present at the heating element in the heating operating state and/or the electrical power supplied to the system in the heating operating state, and in particular in the form to transmit at least one sensor parameter to the control unit.
  • the electrical parameter is an electrical current flowing through the heating element in the heating operating state and/or an electrical voltage present at the heating element in the heating operating state and/or electrical power supplied to the system in the heating operating state.
  • the sensor unit could, for example, have at least one ammeter and/or at least one voltmeter and/or at least one power meter and/or at least one analog/digital converter.
  • the electrical parameter can be detected in a particularly simple manner, as a result of which a low level of complexity can be made possible.
  • the control unit is provided to take into account at least one inductance of the heating element, which is designed in particular as an induction heating element, in the heating operating state when determining the temperature.
  • the sensor unit could be provided to detect at least one additional electrical parameter in the heating operating state and to transmit at least one additional sensor parameter characterizing the detected additional parameter to the control unit for determining the temperature.
  • the additional electrical parameter could be the inductance of the heating element, which is designed in particular as an induction heating element.
  • the control unit could be provided to determine the inductance of the heating element, which is designed in particular as an induction heating element, from the sensor parameter in the heating operating state.
  • the control unit is provided to take into account at least one effective, in particular ohmic, resistance of the system in the heating operating state when determining the temperature.
  • the additional electrical parameter could be the effective, in particular ohmic, resistance of the system.
  • the control unit could be provided to determine the effective, in particular ohmic, resistance of the system from the sensor parameter in the heating operating state. In this way, in particular, a high level of accuracy can be made possible when determining the temperature.
  • the control unit is provided to take into account at least one ratio between an effective, in particular ohmic, resistance of the system in the heating operating state and the impedance of the system in the heating operating state when determining the temperature.
  • the additional electrical parameter could be the ratio between an effective, in particular ohmic, resistance of the system in the heating operating state and the impedance of the system.
  • the control unit could be provided to determine the ratio between an effective, in particular ohmic, resistance of the system in the heating operating state and the impedance of the system from the sensor parameter in the heating operating state. In this way, in particular, a low error rate can be achieved when determining the temperature.
  • the control unit has at least one storage unit and is intended to determine the temperature by comparing the impedance of the system with at least one dependence of an impedance on a temperature stored in the storage unit.
  • the stored dependency could be stored in the form of at least one table in the memory unit and the control unit could be provided in particular to determine the temperature by assigning the impedance to at least one temperature stored in the table, which could be assigned to at least one corresponding and/or closest impedance value. to determine.
  • the dependency could be stored in the memory unit in the form of at least one mathematical function in particular, and the control unit could be provided in particular to determine the temperature by calculating the temperature using the function at the given impedance.
  • At least two, in particular at least four, advantageously at least eight, particularly advantageously at least twelve and preferably a large number of dependencies could be stored in the memory unit.
  • Each dependency stored in the memory unit could be provided in particular for at least one given frequency and/or assigned to at least one given frequency with which the control unit in the heating mode the heating element could operate in particular.
  • a high degree of accuracy can be achieved in particular when determining the temperature.
  • the cooking appliance device could have the object, which could be embodied as a cooking utensil and in particular intended to be placed on a hob plate of a hob.
  • the cooking appliance device preferably has the object which is designed as a muffle wall.
  • the muffle wall could be designed, for example, as a muffle rear wall and/or as a muffle side wall and/or as a muffle top wall and/or as a muffle bottom wall.
  • the cooking appliance device has at least one muffle, which in particular at least essentially forms the muffle wall.
  • the cooking appliance device has in particular at least one appliance door which at least partially delimits the cooking space in the heating operating state.
  • the muffle has at least one muffle rear wall and/or at least one muffle side wall, advantageously at least two muffle side walls, and/or at least one muffle top wall and/or at least one muffle bottom wall.
  • the muffle delimits the cooking chamber in particular at least partially and advantageously at least essentially in the heating operating state together with the appliance door.
  • the cooking chamber is provided in particular for the introduction of food to be cooked, such as food, for heating and/or for warming and/or for keeping the food to be cooked warm.
  • the system made up of the heating element and the object heated by the heating element can in particular be precisely defined, as a result of which a high level of accuracy and/or a low error rate in determining the temperature can/can be made possible.
  • the temperature can be determined exactly and/or with a minimum error rate for a given impedance for each frequency with which the control unit operates the heating element in particular.
  • a particularly accurate temperature determination can be achieved in particular by an induction cooking appliance, preferably by an induction oven, with at least one induction cooking appliance device according to the invention, preferably with at least one induction oven device according to the invention.
  • the temperature determination can be further improved by a method for operating a device according to the invention
  • Induction cooking appliance device advantageously an induction oven device according to the invention, with at least one heating element, which is provided in at least one heating operating state for heating at least one object, wherein in the heating operating state a temperature of the object heated by the heating element is determined from an impedance of a system comprising the heating element and the object becomes.
  • the induction cooking device should not be limited to the application and embodiment described above.
  • the cooking appliance device can have a number of individual elements, components and units that differs from a number specified here in order to fulfill a function described herein.
  • the cooking appliance 24 could be designed as a grill appliance and/or as a steamer appliance and/or as a microwave appliance and/or as a hob, with only induction cooking appliances being claimed.
  • the cooking appliance 24 is designed as a baking oven, in particular as an induction baking oven.
  • the cooking appliance device 10 is designed as a baking oven device, in particular as an induction baking oven device.
  • the cooking appliance device 10 has a muffle 26 .
  • the muffle 26 partially delimits a cooking space 28 .
  • the muffle 26 essentially delimits the cooking chamber 28 together with a cooking appliance door 30 .
  • the cooking appliance device 10 has the cooking appliance door 30 .
  • the muffle 26 has a muffle bottom wall 32 , a muffle top wall 34 , two muffle side walls 36 , 38 and a muffle rear wall 40 .
  • the cooking appliance device 10 has an operator interface 42 for entering and/or selecting operating parameters (cf. 1 ), for example a heating power and/or a heating power density and/or a heating zone.
  • the operator interface 42 is provided for outputting a value of an operating parameter to an operator.
  • the cooking appliance device 10 has a control unit 16 .
  • the control unit 16 is provided to carry out actions and/or to change settings as a function of operating parameters entered by means of the user interface 42 .
  • the control unit 16 regulates an energy supply to at least one heating element 12 (cf. 2 and 3 ).
  • the cooking appliance device 10 has two heating elements 12 .
  • the cooking appliance device 10 could in particular have a different number of heating elements 12 .
  • the cooking appliance device 10 could have exactly one single heating element 12 .
  • the cooking appliance device 10 could have at least three, in particular at least four, advantageously at least five and preferably a plurality of heating elements 12, for example.
  • the heating elements 12 are arranged outside of the cooking space 28 .
  • a lower heating element 12 of the heating elements 12 is in an installed position below the muffle bottom wall 32 arranged.
  • the lower heating element 12 is arranged in a vicinity of the muffle bottom wall 32 .
  • An upper heating element 12 of the heating elements 12 is arranged in an installed position above the muffle top wall 34 .
  • the upper heating element 12 is arranged in a vicinity of the muffle top wall 34 . Only one of the heating elements 12 is described below.
  • the heating element 12 is designed as an induction heating element. In the heating operating state, the heating element 12 is provided for heating an object 14 . In the heating operating state, the heating element 12 inductively heats the object 14 .
  • the cooking appliance device 10 has the object 14 (cf. Figures 1 to 3 ).
  • the object 14 is designed as a muffle wall.
  • the object 14 is in the form of the muffle bottom wall 32 .
  • the object is designed as the muffle top wall 34 .
  • the cooking appliance device 10 has a supply unit 44 (cf. 3 ).
  • the supply unit 44 is intended for connection to a household network 46 .
  • the supply unit 44 provides a high-frequency alternating current with a frequency f for supplying the heating element 12 .
  • control unit 16 controls the supply unit 44 to supply the heating element 12 .
  • control unit 16 operates the heating element 12 by means of the supply unit 44 at the frequency f.
  • the control unit 16 determines a temperature T of the object 14 heated by the heating element 12 from an impedance Z 0 of a system 18 comprising the heating element 12 and the object 14.
  • the control unit 16 takes the frequency into account f, with which the control unit 16 operates the heating element 12 in the heating mode.
  • control unit 16 determines the impedance Z 0 of the system 18 from sensor parameters. In the heating operating state, the control unit 16 receives the sensor parameters from a sensor unit 20 (cf. 1 ).
  • the cooking appliance device 10 has the sensor unit 20 (cf. 1 ). In the heating operating state, the sensor unit 20 detects electrical parameters. In the present exemplary embodiment, the sensor unit 20 detects three electrical parameters. Following the detection of the electrical parameters, sensor unit 20 transmits a sensor parameter characterizing the corresponding detected parameter to control unit 16 in order to determine temperature T.
  • the sensor unit 20 detects an electrical current I 0 flowing through the heating element 12 in the heating operating state (cf. Figures 3 and 4 ).
  • the electrical parameter is an electrical current I 0 flowing through the heating element 12 in the heating operating state.
  • the sensor unit 20 detects an electrical voltage V 0 present at the heating element 12 in the heating operating state (cf. Figures 3 and 4 ).
  • the electrical parameter is an electrical voltage V 0 present at the heating element 12 in the heating operating state.
  • the sensor unit 20 detects an electrical power Po supplied to the system 18 in the heating operating state (cf. Figures 3 and 4 ).
  • the electrical parameter is an electrical power Po supplied to the system 18 in the heating operating state. Only one of the electrical parameters is described below.
  • control unit 16 determines the impedance Z 0 of the system 18 from the electrical parameter 18 the temperature T of the object 14 heated by the heating element 12 is determined.
  • the control unit 16 uses a formula that is dependent on the electrical parameter. From the determined impedance Z 0 of the system 18, the control unit 16 determines the temperature T of the object 14 in the heating operating state.
  • the control unit 16 When determining the temperature T, the control unit 16 takes into account an inductance L eq of the heating element 12 in the heating operating state (cf. 3 ). From the electrical parameter, the control unit 16 determines the inductance L eq of the heating element 12 in the heating operating state. When determining the inductance L eq of the heating element 12, the control unit 16 uses a formula dependent on the electrical parameter.
  • the control unit 16 When determining the temperature T, the control unit 16 takes into account an effective resistance R eq of the system 18 in the heating operating state (cf. 3 ). From the electrical parameter, the control unit 16 determines the effective resistance R eq of the system 18 in the heating operating state. In determining the effective resistance R eq of the system 18, the control unit 16 uses a formula dependent on the electrical parameter.
  • C is a capacitance 48 of the system 18 (cf. 3 ).
  • the quantity ⁇ is proportional to the frequency f with which the control unit 16 operates the heating element 12 in the heating operating state.
  • control unit 16 determines the impedance Z 0 of the system 18 and the inductance L eq of the heating element 12 and the effective resistance R eq of the system 18 in the heating operating state Detect characteristic variable and transmit a corresponding number of further sensor parameters characterizing the further detected characteristic variable to control unit 16 .
  • the additional electrical parameter could be, for example, the impedance Z 0 of the system 18 and/or the inductance L eq of the heating element 12 and/or the effective resistance R eq of the system 18 .
  • the control unit 16 When determining the temperature T, the control unit 16 takes into account a ratio between the effective resistance R eq of the system 18 in the heating operating state and the impedance Z 0 of the system 18 in the heating operating state. In the present exemplary embodiment, the control unit 16 determines the relationship between the heating mode in the heating mode effective resistance R eq of the system 18 in the heating mode and the impedance Z 0 of the system 18 from the above formulas. Alternatively or additionally, the further electrical parameter could be the ratio between the effective resistance R eq of the system 18 in the heating operating state and the impedance Z 0 of the system 18, for example.
  • the control unit 16 has a memory unit 22 (cf. 1 ) on.
  • the control unit 16 determines the temperature T by comparing the impedance Z 0 of the system 18 with a dependence of an impedance Z 0 on a temperature stored in the storage unit 22 (cf. 5).
  • figure 5 shows the dependency of an impedance Z 0 on a temperature at two different frequencies f 1 , f 2 .
  • the frequency f 1 is essentially 110 kHz.
  • the frequency f 2 is essentially 130 kHz.
  • the temperature T of the object 14 depends on the impedance Z 0 of the system 18.
  • the temperature T of the object 14 depends on the frequency f with which the control unit 16 operates the heating element 12 in the heating operating state.
  • the temperature T of the object 14 is dependent on the inductance Leq of the heating element 12.
  • the temperature T of the object 14 is dependent on the effective resistance Req of the system 18.
  • the temperature T of the object 14 is dependent on the ratio between the effective resistance R eq of the system 18 in the heating mode and the impedance Z 0 of the system 18.
  • control unit 16 adjusts the frequency f at which the control unit 16 operates the heating element 12 in the heating operating state. By adapting the frequency f with which the control unit 16 operates the heating element 12 in the heating operating state, the control unit 16 regulates a cooking chamber temperature prevailing in the cooking chamber 28 in the heating operating state.
  • control unit 16 could use the electrical parameter, for example, to control and/or regulate a heating power density provided by the heating element 12 and/or a power supplied to the heating element 12 in the heating operating state.
  • control unit 16 could use the electrical parameter to protect electrical and/or electronic units, for example.
  • an operator enters an objective temperature T obj via the operator interface 42 (cf. 6 ).
  • the control unit 16 could, for example, a use the objective temperature T obj , which could be defined and/or specified, for example, by a particularly automatic cooking program and/or by a cooking strategy and/or by a particularly selected function.
  • the control unit 16 compares the objective temperature T obj and the temperature T of the object 14 with one another in a temperature control step 50 . Depending on the comparison of the objective temperature T obj and the temperature T of the object 14 , the control unit 16 determines an objective power P obj in the temperature control step 50 .
  • the control unit 16 determines at least one modulation parameter from the objective power P obj in a power control step 52 .
  • the modulation parameter could be the frequency f, for example, with which the control unit 16 operates the heating element 12 in the heating mode.
  • the modulation parameter could be a duty cycle D, for example, with which the control unit 16 operates the heating element 12 in the heating operating state.
  • control unit 16 operates the heating element 12 with the modulation parameter.
  • control unit 16 transmits the modulation parameter to the supply unit 44.
  • the supply unit 44 provides the objective power P obj by means of the modulation parameter.
  • the sensor unit 20 detects at least one output signal from the supply unit 44.
  • the output signal and the electrical parameter are in particular at least substantially and advantageously completely identical.
  • the output signal is an electric current I 0 flowing through the heating element 12 in the heating operating state.
  • the output signal is an electrical voltage V 0 present at the heating element 12 in the heating operating state.
  • the output signal is an electrical power P 0 supplied to the system 18 in the heating mode.
  • the sensor unit 20 transmits the electrical parameter to the control unit 16.
  • the control unit 16 takes the electrical parameter into account in the power control step 52.
  • the control unit 16 determines the temperature T of the object 14 in a temperature determination step 54.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Induction Heating Cooking Devices (AREA)

Claims (9)

  1. Dispositif pour appareil de cuisson par induction comprenant au moins un élément chauffant (12), lequel sert, dans au moins un état de fonctionnement du chauffage, au chauffage d'au moins un objet (14), et comprenant une unité de commande (16) servant à déterminer, à l'état de fonctionnement du chauffage, sur base de l'impédance (Z0) d'un système (18) englobant l'élément chauffant (12) et l'objet (14), la température (T) de l'objet (14) chauffé par l'élément chauffant (12), caractérisé en ce que l'unité de commande (16) comprend au moins une unité de mémorisation (22) servant à déterminer la température (T) par comparaison de l'impédance (Z0) du système (18) avec au moins une dépendance, enregistrée dans l'unité de mémorisation (22), d'une impédance d'une température, l'unité de commande (16) servant à tenir compte lors de la détermination de la température (T), d'au moins un rapport entre une résistance effective (Req) du système (18) à l'état de fonctionnement du chauffage, et l'impédance (Z0) du système (18) à l'état de fonctionnement du chauffage.
  2. Dispositif pour appareil de cuisson par induction selon la revendication 1, caractérisé en ce que l'unité de commande (16) sert à tenir compte, lors de la détermination de la température (T), d'une fréquence (f), avec laquelle l'unité de commande (16) fait fonctionner l'élément chauffant (12) en état de fonctionnement du chauffage.
  3. Dispositif pour appareil de cuisson par induction selon l'une des revendications précédentes, caractérisé par au moins une unité de détection (20), qui sert à détecter, à l'état de fonctionnement du chauffage, au moins une caractéristique électrique et à transférer au moins un paramètre de détection caractérisant la caractéristique détectée, à l'unité de commande (16) dans le but de déterminer la température.
  4. Dispositif pour appareil de cuisson par induction selon la revendication 3, caractérisé en ce que l'unité de détection (20) sert à détecter, à l'état de fonctionnement du chauffage, le courant électrique (I0) circulant, à l'état de fonctionnement du chauffage, dans l'élément chauffant (12).
  5. Dispositif pour appareil de cuisson par induction selon la revendication 3 ou 4, caractérisé en ce que l'unité de détection (20) sert à détecter, en l'état de fonctionnement du chauffage, la tension (V0) électrique présente, en l'état de fonctionnement du chauffage, sur l'élément chauffant (12).
  6. Dispositif d'appareil de cuisson par induction selon l'une des revendications 3 à 5, caractérisé en ce que l'unité de détection (20) sert à détecter, en l'état de fonctionnement du chauffage, la puissance (P0) électrique amenée, en l'état de fonctionnement du chauffage, au système (18).
  7. Dispositif pour appareil de cuisson par induction selon l'une des revendications précédentes, caractérisé en ce que l'unité de commande (16) sert à tenir compte, lors de la détermination de la température (T), d'au moins une inductance (Leq) de l'élément chauffant (12), en l'état de fonctionnement du chauffage.
  8. Dispositif d'appareil de cuisson par induction selon l'une des revendications précédentes, caractérisé par l'objet (14), lequel est réalisé en tant que parois de moufle.
  9. Appareil de cuisson par induction comprenant au moins un dispositif pour appareil de cuisson par induction (10) selon l'une des revendications précédentes.
EP17822461.4A 2016-12-23 2017-12-12 Dispositif pour appareil de cuisson Active EP3560279B1 (fr)

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USD914447S1 (en) 2018-06-19 2021-03-30 Sharkninja Operating Llc Air diffuser
USD934027S1 (en) 2018-08-09 2021-10-26 Sharkninja Operating Llc Reversible cooking rack
USD903413S1 (en) 2018-08-09 2020-12-01 Sharkninja Operating Llc Cooking basket
USD883014S1 (en) 2018-08-09 2020-05-05 Sharkninja Operating Llc Food preparation device
USD883015S1 (en) 2018-08-09 2020-05-05 Sharkninja Operating Llc Food preparation device and parts thereof
WO2020176477A1 (fr) 2019-02-25 2020-09-03 Sharkninja Operating Llc Système de cuisson avec protection
US11033146B2 (en) 2019-02-25 2021-06-15 Sharkninja Operating Llc Cooking device and components thereof
USD918654S1 (en) 2019-06-06 2021-05-11 Sharkninja Operating Llc Grill plate
USD982375S1 (en) 2019-06-06 2023-04-04 Sharkninja Operating Llc Food preparation device
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DE19818831C2 (de) * 1998-04-27 2003-11-13 Hubert Eric Walter Verfahren, Vorrichtung und Behältnis zur Erwärmung vorgefertigter Speisen
DE19852617A1 (de) * 1998-11-14 2000-01-20 Aeg Hausgeraete Gmbh Garofen mit Induktionsbeheizung und Verfahren zum Beheizen einer Ofenmuffel eines Garofens
ES2246640B1 (es) * 2003-05-15 2006-11-01 Bsh Electrodomesticos España, S.A. Regulacion de la temperatura para un elemento calentador de calentamiento inducido.
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