EP1732357A2 - Dispositif de chauffage pour appareils de cuisson à induction - Google Patents

Dispositif de chauffage pour appareils de cuisson à induction Download PDF

Info

Publication number
EP1732357A2
EP1732357A2 EP06113590A EP06113590A EP1732357A2 EP 1732357 A2 EP1732357 A2 EP 1732357A2 EP 06113590 A EP06113590 A EP 06113590A EP 06113590 A EP06113590 A EP 06113590A EP 1732357 A2 EP1732357 A2 EP 1732357A2
Authority
EP
European Patent Office
Prior art keywords
heating
inductor
temperature
control unit
frequency
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.)
Ceased
Application number
EP06113590A
Other languages
German (de)
English (en)
Other versions
EP1732357A3 (fr
Inventor
Luis Angel Barragan Perez
José Miguel Burdio Pinilla
Jose Ramon Garcia Jiménez
Pablo Jesus Hernandez Blasco
Sergio Llorente Gil
Alfonso Lorente Perez
Fernando Monterde Aznar
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 Bosch und Siemens 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 Bosch und Siemens Hausgeraete GmbH filed Critical BSH Bosch und Siemens Hausgeraete GmbH
Publication of EP1732357A2 publication Critical patent/EP1732357A2/fr
Publication of EP1732357A3 publication Critical patent/EP1732357A3/fr
Ceased legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/02—Induction heating
    • H05B6/06—Control, e.g. of temperature, of power
    • H05B6/062—Control, e.g. of temperature, of power for cooking plates or the like
    • 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
    • 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 heating device for a Indutationsgarêt according to the preamble of claim 1.
  • a heating device for a Indutationsgarêt is known in which a control unit monitors the temperature of a cooking vessel to reach a cooking temperature.
  • a control unit monitors the temperature of a cooking vessel to reach a cooking temperature.
  • the cooking of a liquid or a dish in the cooking container can be detected and the heat output of an inductor for heating the cooking vessel can be automatically reduced so that the water in the cooking vessel boils only slightly or the dish in the cooking vessel does not burn.
  • the object of the invention is in particular to provide a generic heating device for a Indutationsgarêt, which is improved in terms of monitoring to achieve a cooking temperature of the cooking vessel.
  • the invention relates to a heating device for a Indutationsgarêt comprising an inductor for heating a heating element of a cooking vessel and a control unit which is prepared to monitor the heating element to reach a cooking temperature.
  • the monitoring be done by adjusting a frequency of the alternating current flowing through the inductor and detecting at least one electrical quantity as a function of time.
  • a frequency monitoring can be done very reliable and timely.
  • the detection of the electrical size allows a particularly simple monitoring of the cooking temperature. As a result, the cooking can be detected very quickly and reacted quickly, for example, by reducing the heating power.
  • the Indutationsgarêt can be a stove or just a hob or oven and the cooking container a pot or a baking oven or the like.
  • the electrical quantity may be a size of the induction cooking appliance, for example the input voltage used by a circuit for generating an alternating current in the inductor.
  • the electrical variable is a size of the inductor, for example the current through the inductor and / or the voltage at the inductor.
  • a single electrical quantity may be detected as a function of time, for example a current or voltage value, or a plurality of electrical variables may be detected as a function of time, for example a current and a voltage value.
  • the designation of the electrical quantity is also used for an ensemble of interrelated and time-dependent electrical quantities.
  • the electrical quantity is advantageously in a known relationship to the temperature of the heating element.
  • This relationship can be absolute, so that from the electrical size, the temperature of the heating element can be determined directly. However, it is sufficient if the relationship is relative, so that from a change in the electrical quantity on a change in the temperature of the heating element can be concluded.
  • the detection of the electrical variable as a function of time is expediently carried out by a chronological sequence of several measurements of the size and in particular by determining the gradient of the size from the measurements.
  • the electrical quantity is correlated with the inductance of a system comprising the inductor and the heating element.
  • a change in the temperature of the heating element typically also changes the inductance of the heating element and thereby the inductance of the system comprising the inductor and the heating element.
  • the electrical variable with the inductance of this system in indirect or direct connection, it can be concluded in a simple manner from the electrical variable to the temperature or the temperature movement of the heating element. Monitoring the temperature for cooking is possible in a simple manner.
  • the electrical quantity is correlated with the power of the inductor and in particular is in direct proportion to the power, which makes it particularly easy to deduce the temperature of the heating element.
  • a particularly simple and convenient control of the heating device can be achieved when the control unit for controlling the power of the inductor is prepared based on the electrical size.
  • the electrical quantity can be evaluated both for the purpose of controlling the electrical power and for monitoring the cooking temperature, whereby the same size - or the same ensemble of sizes - can be used to control two processes. Components can be saved and data processing processes simplified.
  • the control unit for keeping constant the temperature of the heating element is prepared based on the electrical size.
  • control unit is prepared for keeping the frequency constant during the detection as a function of time.
  • an operating point of the measurements can be kept stable, whereby reliably usable results of the measurement can be achieved.
  • control unit is provided for determining measuring time ranges with at least one intermediate heating time range, wherein the frequency in the measuring time ranges is set at an identical measuring frequency and in the heating time range at a heating frequency different from the measuring frequency.
  • the heating frequency can be varied independently of, for example, a favorable measuring frequency for power control of the inductor without impairing the reliability of the monitoring.
  • the control unit is provided for detecting an undershoot of the absolute value of the gradient of the electrical variable below a limit value and for a response of the control to the undershooting.
  • a particularly simple monitoring of the achievement of the cooking temperature can be achieved by detecting the undershooting of the absolute value of the gradient of the electrical variable below a limit.
  • the gradient of the electrical quantity that is, the change of the electrical quantity with time, decreases as the temperature increases after a rise during heating during cooking remains largely constant.
  • This stability can be recognized in a particularly simple way by suitably setting the limit value.
  • the reaction includes controlling the power of the inductor to maintain the temperature of the heating element constant. This can prevent burning of the dish.
  • a particularly advantageous possibility of the control is that the temperature is kept constant at the value of the time of falling below. Here, the temperature can be kept constant even at the beginning of cooking, so that a strong cooking or overcooking is prevented.
  • the reaction is a control of the power of the inductor to reduce the temperature of the heating element by a predetermined amount of temperature.
  • the temperature amount is selectable by an operator.
  • the temperature amount may be a selectable temperature range or a category such as "large”, “medium” or “small”. The operator can thus choose how much the water or the dish should cook.
  • a particularly reliable avoidance of overcooking or burning can be achieved if the control unit for determining the limit value is provided as a function of the time profile of the electrical variable. Recognition of cooking takes some time. In addition, the heating element is already slightly hotter than the cooking temperature when cooking the water or the dish. If there is only a small amount of water or a small amount of food in the cooking container, the time delay or temperature difference can lead to overcooking or burning. This can be counteracted if the limit is set higher during rapid heating, cooking is thus "detected" sooner so that the time delay and the temperature difference are somewhat compensated. With a large amount of water or a dish in the cooking container, a little more time is available, so that the limit can be set lower.
  • control unit is prepared to control a verification phase prior to reaction and after underflow. Random errors can be avoided, for example, by several further measurements that are made after detecting the undershoot. The reaction is then carried out after the further measurements. Conveniently, the duration of the verification phase is dependent on the time profile of the electrical variable, whereby a time delay can be kept low at a rapid boil.
  • the invention is also directed to a method of controlling a heating device for an induction cooking appliance, in which a heating element of a cooking container is monitored by a control unit for reaching a cooking temperature. It is proposed that the monitoring be done by adjusting a frequency of the alternating current flowing through an inductor and the detection of an electrical quantity as a function of time. It can be achieved a quick and reliable detection of cooking in a simple manner.
  • FIG. 1 shows a heating device 2 with a schematically illustrated and designed as a winding inductor 4 under a support plate 6.
  • a cooking container 8 is shown in the form of a cut pot, the bottom of the pot comprises a heating element 10 of a ferritic material.
  • a control unit 12 Connected to the inductor 4 is a control unit 12 which generates an alternating current in the inductor 4 via a circuit 14.
  • the schematically illustrated circuit 14 comprises a half-bridge circuit of power transistors and rectifiers, which are supplied with an input voltage u 0 of a current source 16, for example a power supply network.
  • the control unit 12 serves to control the circuit 14 and comprises measuring elements for measuring the voltage u 1 , which is applied to the inductor 4, and the current i i , which flows through the inductor 4.
  • the input voltage u 0 is detected by the control unit 12, which has means for detecting peak values and mean values of the input voltage u 0 , the voltage u 1 and the current i 1 .
  • the control unit 12 has arithmetic, storage and / or evaluation means which are provided for detecting one or more of these variables as electrical variables as a function of time.
  • the circuit 14 is switched by the control unit 12 so that an alternating current with the frequency f flows through the inductor 4.
  • the magnetic field generated by the alternating current generates eddy currents in the heating element 10, which heat the heating element 10.
  • the power P at which the heating element 10 is heated is dependent on the frequency f, as shown in the diagram in FIG. In Figure 2, the power P is above the frequency f of the current i 1 applied by the inductor 4.
  • the power P is in units of the maximum power P max and the frequency f is plotted in units of the resonant frequency f r of a resonant circuit comprising the inductor 4.
  • the power P reaches the maximum power P max , for example three kW. If the frequency f is switched higher or lower by the control unit 12, the power P is smaller than the maximum power P max .
  • the power P is dependent not only on the frequency f but also on the inductance L of the system comprising the inductor 4 and the heating element 10.
  • the power P is shown in two curves, namely at a low temperature T 1 and at a higher temperature T 2 of the heating element 10.
  • the measurement of the power P can be carried out by measuring one or more of the above-mentioned electrical variables whose change is correlated with the temperature T of the heating element 10.
  • FIG. 3 shows an example of a course of the temperature T (t) of the heating element 10 together with the associated curve of the power P (t) of the inductor 4 and a profile of the electrical variable p (t), which is determined or calculated by the control unit 12 , Also shown is the first derivative dp / dt of the time course of the electrical quantity p (t), thus the gradient of the electrical quantity p (t).
  • the power P of the inductor 4 is set to a power value P 1 .
  • the control unit 12 sets the frequency f to a first Value adjusts the power P of the inductor 4 by measuring and / or calculating the electrical quantity p detected and in a deviation of the power P from the desired power value P 1 by an iterative process, the frequency f changed until the power P to the desired Power value P 1 is set.
  • the heating element 10 is heated so that its temperature T (t) increases. Due to this, the value of the electrical quantity p (t) slowly decreases.
  • the gradient dp / dt of the electrical quantity p (t) is negative in this case, but increases slowly by a flattening of the time profile of the electrical quantity p (t).
  • the temperature T (t) reaches the boiling temperature of the liquid or of the dish in the cooking container 8, the temperature T (t) no longer rises or only very slightly increases.
  • the gradient dp / dt of the electrical quantity p (t) approaches zero or is very low.
  • the gradient dp / dt exceeds a predetermined limit value G or the absolute value of the gradient dp / dt falls below this limit value G.
  • the limit value G can be fixed in advance.
  • a reaction is initiated by the control unit 12, which comprises a reduction of the power P (t) to a lower power value P 2 .
  • the recognition of exceeding or falling below the limit value G can be effected by one or more triggers and / or comprise measuring or calculating steps.
  • the power value P 2 is chosen so that the water or the dish in the cooking container 8 slightly simmer.
  • the temperature T (t) can also be kept constant by keeping the electrical quantity p (t) constant.
  • the control of the power P (t) of the inductor 4 is thus based on the electrical variable p (t).
  • the temperature T (t) is adjusted by constant checking of the electrical quantity p (t) at the constant value, so that burning of the dish is at least largely prevented. If, for example, at a point in time t x, the dish cakes on the heating element 10, forming an insulating layer and thus only one low heat transfer from the heating element 10 to the court be possible, the power P of the inductor 4 is successively corrected downwards, so that the temperature T (t) of the heating element 10 remains stable at the set value.
  • FIG. 4 shows a diagram in which the frequency f of the current i 1 is plotted against the time t by the inductor 4. While a number of measurement time periods .DELTA.t 1, the frequency f stable at a measuring frequency f M, and held the electric variable p (t) in each case once several times or recorded respectively.
  • Heating time ranges ⁇ t 2 in which the frequency f is set to a heating frequency f H1 or f H2 , are respectively arranged between the measuring time ranges ⁇ t 1 .
  • the heating frequencies f H1 , f H2 are independent of the measuring frequency f M and can be varied as desired to control the power P within predetermined limits.
  • the measuring frequency f M - at least over a measuring cycle of several measuring time ranges .DELTA.t 1 - always the same, so that a stable operating point for detecting the electrical quantity p (t) is achieved.
  • FIG. 5 shows a diagram analogous to FIG. 3, in which the temperature T (t) of the heating element 10 and the power P (t) of the inductor 4 are plotted against time.
  • the application of the electrical variable p (t) and the gradient dp / dt of the electrical variable p (t) analogously to FIG. 3 has been omitted, the course of these variables being analogous to FIG.
  • the absolute value of the gradient dp / dt falls below the limit value G at the instant t 1 , the control unit 12 leaving the power P (t) of the inductor 4 initially at the high power value P 1 .
  • the temperature T (t) decreases from the first temperature T 1 , which was reached at the time t 1 , by a predetermined temperature amount ⁇ T to a lower temperature T 2 .
  • the temperature amount .DELTA.T was previously set by an operator by a corresponding input to the control unit 12 to "medium", so that the temperature T 2 ensures a medium strong cooking on a court in the cooking container 8 is.
  • the temperature T 2 is reached and the power P (t) of the inductor 4 is increased to a somewhat increased power value P 2 to maintain the temperature T (t) of the heating element 10 at the temperature T 2 and the desired one Cooking the dish in the cooking tray 8 upright.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Induction Heating Cooking Devices (AREA)
  • Cookers (AREA)
EP06113590A 2005-06-08 2006-05-05 Dispositif de chauffage pour appareils de cuisson à induction Ceased EP1732357A3 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ES200501472A ES2292299B1 (es) 2005-06-08 2005-06-08 Dispositivo de calentamiento para una cocina de induccion.

Publications (2)

Publication Number Publication Date
EP1732357A2 true EP1732357A2 (fr) 2006-12-13
EP1732357A3 EP1732357A3 (fr) 2008-07-30

Family

ID=36817947

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06113590A Ceased EP1732357A3 (fr) 2005-06-08 2006-05-05 Dispositif de chauffage pour appareils de cuisson à induction

Country Status (2)

Country Link
EP (1) EP1732357A3 (fr)
ES (1) ES2292299B1 (fr)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100084395A1 (en) * 2008-10-08 2010-04-08 Whirlpool Corporation Method for controlling a static power conversion unit and induction heating system for cooling appliances using such method
EP2194756A1 (fr) 2008-12-02 2010-06-09 Whirpool Corporation Procédé pour contrôler le système de chauffage à induction d'un appareil de cuisine
EP2194755A1 (fr) 2008-12-02 2010-06-09 Whirpool Corporation Procédé pour contrôler le système de chauffage à induction d'un appareil de cuisine
EP2326140A1 (fr) 2009-11-18 2011-05-25 Whirlpool Corporation Procédé pour contrôler un système de chauffage à induction
US8466394B2 (en) 2009-09-11 2013-06-18 Whirlpool Corporation Method for detecting and compensating noises in induction heating systems for domestic and professional kitchen and induction heating system using such method
US20130161317A1 (en) * 2011-12-23 2013-06-27 Samsung Electronics, Co., Ltd. Induction heating cooker and control method thereof
US8598497B2 (en) 2010-11-30 2013-12-03 Bose Corporation Cooking temperature and power control
US8754351B2 (en) 2010-11-30 2014-06-17 Bose Corporation Induction cooking
US9470423B2 (en) 2013-12-02 2016-10-18 Bose Corporation Cooktop power control system
EP3267113A1 (fr) * 2016-07-06 2018-01-10 E.G.O. ELEKTRO-GERÄTEBAU GmbH Procédé de fonctionnement d'une plaque de cuisson et plaque de cuisson
DE102016115284A1 (de) 2016-08-17 2018-02-22 Deutsches Zentrum für Luft- und Raumfahrt e.V. Reparaturverfahren für ein Werkstück aus einem Kunststoffmaterial, Reparaturvorrichtung
EP3300453A1 (fr) * 2016-09-23 2018-03-28 Electrolux Appliances Aktiebolag Procédé de détection d'ébullition et table de cuisson à induction comprenant un mécanisme de détection d'ébullition
EP3386270A1 (fr) 2017-04-04 2018-10-10 Electrolux Appliances Aktiebolag Procédé et système de chauffage par induction

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2062985B (en) * 1979-11-12 1983-11-02 Matsushita Electric Ind Co Ltd Small load detection by comparison between input and output parameters of an induction heat cooking apparatus
JPS6433879A (en) * 1987-07-29 1989-02-03 Shinko Electric Co Ltd High-frequency induction heater
EP0427879B1 (fr) * 1989-11-13 1993-12-29 AEG-Elotherm GmbH Appareil et procédé de chauffage par induction de pièces
JPH09245956A (ja) * 1996-03-07 1997-09-19 Matsushita Electric Ind Co Ltd 誘導加熱調理器
JP2001155846A (ja) * 1999-09-13 2001-06-08 Fuji Electric Co Ltd 電磁調理器用加熱調理容器の温度制御装置

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Cited By (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2175690A1 (fr) 2008-10-08 2010-04-14 Whirpool Corporation Procédé de contrôle d'une unité de conversion de puissance statique et système de chauffage par induction pour appareils de cuisson utilisant ledit procédé
US20100084395A1 (en) * 2008-10-08 2010-04-08 Whirlpool Corporation Method for controlling a static power conversion unit and induction heating system for cooling appliances using such method
US8492685B2 (en) 2008-10-08 2013-07-23 Whirlpool Corporation Method for controlling a static power conversion unit and induction heating system for cooling appliances using such method
US8530805B2 (en) 2008-12-02 2013-09-10 Whirlpool Corporation Method for controlling an induction heating system of a cooking appliance
EP2194756A1 (fr) 2008-12-02 2010-06-09 Whirpool Corporation Procédé pour contrôler le système de chauffage à induction d'un appareil de cuisine
EP2194755A1 (fr) 2008-12-02 2010-06-09 Whirpool Corporation Procédé pour contrôler le système de chauffage à induction d'un appareil de cuisine
US8563905B2 (en) 2008-12-02 2013-10-22 Whirlpool Corporation Method for controlling the induction heating system of a cooking appliance
US8466394B2 (en) 2009-09-11 2013-06-18 Whirlpool Corporation Method for detecting and compensating noises in induction heating systems for domestic and professional kitchen and induction heating system using such method
US10136477B2 (en) 2009-11-18 2018-11-20 Whirlpool Corporation Method for controlling an induction heating system
EP2326140A1 (fr) 2009-11-18 2011-05-25 Whirlpool Corporation Procédé pour contrôler un système de chauffage à induction
US11979962B2 (en) 2009-11-18 2024-05-07 Whirlpool Corporation Method for controlling an induction heating system
US8598497B2 (en) 2010-11-30 2013-12-03 Bose Corporation Cooking temperature and power control
US8754351B2 (en) 2010-11-30 2014-06-17 Bose Corporation Induction cooking
US9006622B2 (en) 2010-11-30 2015-04-14 Bose Corporation Induction cooking
US9131537B2 (en) 2011-03-29 2015-09-08 Boise Corporation Cooking temperature and power control
US20130161317A1 (en) * 2011-12-23 2013-06-27 Samsung Electronics, Co., Ltd. Induction heating cooker and control method thereof
US9470423B2 (en) 2013-12-02 2016-10-18 Bose Corporation Cooktop power control system
EP3267113A1 (fr) * 2016-07-06 2018-01-10 E.G.O. ELEKTRO-GERÄTEBAU GmbH Procédé de fonctionnement d'une plaque de cuisson et plaque de cuisson
US10708982B2 (en) 2016-07-06 2020-07-07 E.G.O. Elektro-Geraetebau Gmbh Method for operating a hob, and hob
US10857741B2 (en) 2016-08-17 2020-12-08 Deutsches Zentrum fuer Luft—und Raumfahrt e.V. Repair method for a workpiece of a plastics material, repair apparatus
WO2018033399A1 (fr) 2016-08-17 2018-02-22 Deutsches Zentrum für Luft- und Raumfahrt e.V. Procédé de réparation d'une pièce en matière plastique, dispositif de réparation
DE102016115284A1 (de) 2016-08-17 2018-02-22 Deutsches Zentrum für Luft- und Raumfahrt e.V. Reparaturverfahren für ein Werkstück aus einem Kunststoffmaterial, Reparaturvorrichtung
WO2018054617A1 (fr) * 2016-09-23 2018-03-29 Electrolux Appliances Aktiebolag Procédé de détection d'ébullition et plaque de cuisson à induction comprenant un mécanisme de détection d'ébullition
CN109792804A (zh) * 2016-09-23 2019-05-21 伊莱克斯家用电器股份公司 用于沸腾检测的方法以及包括沸腾检测机构的感应灶具
EP3300453A1 (fr) * 2016-09-23 2018-03-28 Electrolux Appliances Aktiebolag Procédé de détection d'ébullition et table de cuisson à induction comprenant un mécanisme de détection d'ébullition
CN109792804B (zh) * 2016-09-23 2022-04-19 伊莱克斯家用电器股份公司 用于沸腾检测的方法以及包括沸腾检测机构的感应灶具
US11330678B2 (en) * 2016-09-23 2022-05-10 Electrolux Appliances Aktiebolag Method for boil detection and induction hob including a boil detection mechanism
AU2017329374B2 (en) * 2016-09-23 2022-09-15 Electrolux Appliances Aktiebolag Method for boil detection and induction hob including a boil detection mechanism
EP3386270A1 (fr) 2017-04-04 2018-10-10 Electrolux Appliances Aktiebolag Procédé et système de chauffage par induction

Also Published As

Publication number Publication date
ES2292299B1 (es) 2008-10-16
EP1732357A3 (fr) 2008-07-30
ES2292299A1 (es) 2008-03-01

Similar Documents

Publication Publication Date Title
EP1732357A2 (fr) Dispositif de chauffage pour appareils de cuisson à induction
DE2917007C2 (de) Hochfrequenzofen
DE69832329T2 (de) Verfahren und Vorrichtung zur Regelung eines elektrischen Heizelementes
DE4022846C2 (de) Vorrichtung zur Leistungssteuerung und -begrenzung bei einer Heizfläche aus Glaskeramik oder einem vergleichbaren Material
EP1625774B1 (fr) Regulation de temperature destinee a un element de chauffage chauffe par induction
EP3482661B1 (fr) Procédé de réglage d'une puissance de chauffage d'au moins un élément chauffant d'un appareil électroménager
EP3177107B1 (fr) Procede de fonctionnement d'une plaque de cuisson a induction
EP3267113B1 (fr) Procédé de fonctionnement d'une plaque de cuisson
DE102005057585B3 (de) Garverfahren
EP0652688B1 (fr) Méthode pour commander la puissance de chauffage d'une plaque vitro-céramique selon les conditions de cuisson requises
CH669297A5 (de) Verfahren zum steuern und regeln der heizleistung in der aufheizphase eines kochgefaesses.
EP1391141B1 (fr) Procede et dispositif pour limiter et/ou reguler la temperature superficielle d'une plaque de cuisson
CH664862A5 (de) Verfahren zum ueberwachen der berechneten temperatur eines widerstandsheizelements und anordnung zur durchfuehrung dieses verfahrens.
EP2789918B1 (fr) Procédé destiné à la cuisson d'un produit de cuisson et appareil de cuisson
EP1768461B1 (fr) Méthode pour générer, traiter et évaluer un signal en correlation avec la température, et dispositif correspondant
EP1897414B1 (fr) Dispositif pour monter en température un élément chauffant
EP3136822B1 (fr) Procede de determination de temperature
EP0806887A1 (fr) Procédé et dispositif pour reconnaître le stade de cuisson d'aliments à cuire
EP1492385A2 (fr) Méthode et dispositif de reconnaissance de processus de chauffage
DE202010004437U1 (de) Backofen zum Niedertemperaturgaren
DE102019205408B4 (de) Verfahren zum Betrieb eines Kochfelds mit Dampfgarfunktion und Kochfeld
EP3339827A1 (fr) Capteur de température à c ur pour un appareil de cuisson, procédé de détection de la position d'un capteur de température à c ur ainsi que procédé de détermination de la conductivité thermique d'un appareil de cuisson
DE19805626C2 (de) Verfahren und Einrichtung zum Betreiben einer Kochstelle
EP4221459A1 (fr) Procédé de commande d'une zone de cuisson
EP2001267B1 (fr) Procédé destiné à la commande d'un champ de cuisson et dispositif d'exécution du procédé

Legal Events

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

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL BA HR MK YU

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL BA HR MK YU

17P Request for examination filed

Effective date: 20090130

AKX Designation fees paid

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR

17Q First examination report despatched

Effective date: 20090414

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

Owner name: BSH HAUSGERAETE GMBH

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

Free format text: STATUS: THE APPLICATION HAS BEEN REFUSED

18R Application refused

Effective date: 20180318