EP2117281A2 - Hotplate with a hotplate field and method for controlling a cooking process - Google Patents

Hotplate with a hotplate field and method for controlling a cooking process Download PDF

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Publication number
EP2117281A2
EP2117281A2 EP09006109A EP09006109A EP2117281A2 EP 2117281 A2 EP2117281 A2 EP 2117281A2 EP 09006109 A EP09006109 A EP 09006109A EP 09006109 A EP09006109 A EP 09006109A EP 2117281 A2 EP2117281 A2 EP 2117281A2
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EP
European Patent Office
Prior art keywords
cooking
sensor unit
cooking zone
hob
heat sensor
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP09006109A
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German (de)
French (fr)
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EP2117281A3 (en
EP2117281B1 (en
Inventor
Dominic Beier
Lars Ellerkamp
Holger Dr. Ernst
Uwe Femmer
Sonja Dr. Heitmann
Ulrich Dr. Kienitz
Thomas Dr. Krümpelmann
Holger Dr. Sandring
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.)
Miele und Cie KG
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Miele und Cie KG
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Publication date
Application filed by Miele und Cie KG filed Critical Miele und Cie KG
Publication of EP2117281A2 publication Critical patent/EP2117281A2/en
Publication of EP2117281A3 publication Critical patent/EP2117281A3/en
Application granted granted Critical
Publication of EP2117281B1 publication Critical patent/EP2117281B1/en
Not-in-force 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
    • H05B6/06—Control, e.g. of temperature, of power
    • H05B6/062—Control, e.g. of temperature, of power for cooking plates or the like

Definitions

  • the invention relates to a hob with a hob plate, in particular of glass ceramic with at least one cooking zone for abdovdes cookware, an electrical control for controlling the power of a arranged below the cooking zone heater, wherein a heat sensor unit is disposed in the center of the cooking zone below the hob plate and a method for controlling a cooking process on such a hob.
  • Such a hob and method for controlling a cooking process is from the DE 10 2004 002 058 B3 known.
  • the method described there is suitable for hobs with Strahlungssammlungkörpem and based on the exact measurement of the heat radiation of the cookware and the glass ceramic disc.
  • the temperature at the bottom of the cookware is determined.
  • the evaluation of the output signals of at least two heat sensor units as well as the comparison with previously defined stored reference values is necessary in order then to control the heating power of the heating device as a function of the output signals.
  • the influence of the emissivity of the cookware tray as well as the degree of soiling of the glass ceramic disk on the measurement result when detecting the pot base temperature must also be taken into account. In order to be able to take this influence into account and to design a method for optimal control of the cooking process, several complex sensor arrangements are required.
  • the invention thus raises the problem of designing an arrangement which is independent of the influence of the emission coefficient of the cooking utensil or the contamination of the glass ceramic pane and for detecting the temperature of the cooking utensil floor and a method for controlling an optimum cooking process with the aid of a simplified sensor arrangement.
  • a heat sensor unit with only one thermopile is sufficient to detect the temperature of the bottom of the cookware.
  • Fig. 1 shows an embodiment of a hob according to the invention.
  • the cooktop has a hob plate 1 designed as a glass ceramic plate, which has at least one cooking zone 2 for a cookware 3 to be placed on it.
  • the cookware 3 is arranged by means of a heating device 4 arranged in the installed position of the hob below the hob plate 1 and designed as an induction heater. In the present embodiment, it is a hob with multiple cooking zones, of which only a single cooking zone 2 is shown and explained.
  • a heat sensor unit 5 preferably at least one thermopile, arranged for non-contact temperature measurement of the temperature at the bottom 6 of the cookware 3.
  • the power of the heater 4 is controlled or regulated depending on the output signals of the heat sensor unit 5 by means of the electric control.
  • the heat sensor unit 5 is arranged in a receptacle 7 which is in heat-conducting contact with the underside of the hob plate 1.
  • the receptacle 7 is pot-shaped and designed to be open in the direction of the underside of the hob plate 1, so that the heat radiation emanating from the bottom 6 of the cookware 3 can be detected.
  • the receptacle 7 is formed with an integrated heater 8.
  • the receptacle 7 forms with the heater 8 a heating block, which is heated to carry out the method according to the invention for detecting the temperature at the bottom 6 of the cookware 3 and the dependent control of the power of the induction heating (heater 4) to a defined temperature.
  • the receptacle 7 may be formed in several parts.
  • the heating block is heated to a desired temperature of z. B. 100 ° C heated.
  • the heating block temperature is controlled either by a temperature sensor integrated in the thermopile or a separate temperature sensor in the heating block. Due to the very good heat-conducting contact of the receptacle 7 with the hob plate 1 and the glass ceramic pane is mitbebuildt in the cooking zone 2.
  • the thermopile (heat sensor unit 5) is equipped with a filter that matches the transmission wavelength range of the glass-ceramic disk covers or overlaps. In this way, the heat radiation of the bottom 6 of the cookware 3 can reach the thermopile.
  • thermopile can also be integrated in the receptacle 7, which is equipped with a filter which coincides with the non-transmissive wavelength range of the glass-ceramic disc.
  • this Thermopile measures only the temperature on the underside of the glass ceramic pane.
  • the induction heating is switched on, thus directly heating the underside of the bottom 6 of the cookware 3.
  • the bottom 6 also heats the glass ceramic pane in the area of the cooking zone 2 on which the cookware 3 stands with.
  • the power of the induction heating is regulated as a function of the output signal of the heat sensor unit 5 (thermopile).
  • the output of the thermopile is equal to zero.
  • a thermopile principally performs a difference measurement between the actual temperature and the temperature of the receiving surface by thermal radiation.
  • the temperature of the bottom 6 can be controlled very accurately by the temperature of the heating block or the temperature of the thermopile itself.
  • the prerequisite is that all elements of this system (thermopile, heating block, bottom of the cookware and glass ceramic disk) are exactly at the same temperature.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Electric Stoves And Ranges (AREA)
  • Cookers (AREA)
  • Induction Heating Cooking Devices (AREA)
  • Control Of Resistance Heating (AREA)

Abstract

The cooking surface has a cooking plate (1), particularly consisting of glass ceramic. A cooking zone (2) is provided for a cooking utensil (3). A heat sensor unit (5) is arranged in a cup-like receptacle towards the bottom of the cooking plate, which is located in heat conducting contact with the bottom of the cooking plate, and is provided above an integrated heater (4). An independent claim is included for a method for controlling a cooking process of a cooking surface.

Description

Die Erfindung betrifft ein Kochfeld mit einer Kochfeldplatte insbesondere aus Glaskeramik mit mindestens einer Kochzone für ein darauf abzustellendes Kochgeschirr, einer elektrischen Steuerung zur Steuerung der Leistung einer unterhalb der Kochzone angeordnete Heizeinrichtung, wobei im Zentrum der Kochzone unterhalb der Kochfeldplatte eine Wärmesensoreinheit angeordnet ist sowie ein Verfahren zur Steuerung eines Kochprozesses auf einem derartigen Kochfeld.The invention relates to a hob with a hob plate, in particular of glass ceramic with at least one cooking zone for abzustellendes cookware, an electrical control for controlling the power of a arranged below the cooking zone heater, wherein a heat sensor unit is disposed in the center of the cooking zone below the hob plate and a method for controlling a cooking process on such a hob.

Ein derartiges Kochfeld sowie Verfahren zur Steuerung eines Kochprozesses ist aus der DE 10 2004 002 058 B3 bekannt. Das dort beschriebene Verfahren ist für Kochfelder mit Strahlungsheizkörpem geeignet und basiert auf der exakten Messung der Wärmestrahlung des Kochgeschirrbodens und der Glaskeramikscheibe. Über die Verrechnung der Signale wird die Temperatur am Boden des Kochgeschirrs ermittelt. Zur Durchführung des Verfahrens ist die Auswertung der Ausgangssignale von mindestens zwei Wärmesensoreinheiten sowie der Vergleich mit vorher festgelegten abgespeicherten Referenzwerten erforderlich, um dann in Abhängigkeit der Ausgangssignale die Heizleistung der Heizeinrichtung zu steuern. Bei Kochfeldem ist außerdem der Einfluss des Emissionsgrades des Kochgeschirrbodens sowie der Verschmutzungsgrad der Glaskeramikscheibe auf das Messergebnis bei der Erfassung der Topfbodentemperatur zu berücksichtigen. Um diesen Einfluss berücksichtigen zu können und ein Verfahren zur optimalen Steuerung des Kochprozesses zu gestalten, sind mehrere aufwändige Sensoranordnungen erforderlich.Such a hob and method for controlling a cooking process is from the DE 10 2004 002 058 B3 known. The method described there is suitable for hobs with Strahlungsheizkörpem and based on the exact measurement of the heat radiation of the cookware and the glass ceramic disc. By calculating the signals, the temperature at the bottom of the cookware is determined. To carry out the method, the evaluation of the output signals of at least two heat sensor units as well as the comparison with previously defined stored reference values is necessary in order then to control the heating power of the heating device as a function of the output signals. In the case of cooktops, the influence of the emissivity of the cookware tray as well as the degree of soiling of the glass ceramic disk on the measurement result when detecting the pot base temperature must also be taken into account. In order to be able to take this influence into account and to design a method for optimal control of the cooking process, several complex sensor arrangements are required.

Der Erfindung stellt sich somit das Problem eine vom Einfluss des Emissionskoeffizienten des Kochgeschirrbodens bzw. der Verschmutzung der Glaskeramikscheibe unabhängige und einfach gestaltete Anordnung zur Erfassung der Temperatur des Kochgeschirrbodens sowie ein Verfahren zur Steuerung eines optimalen Kochprozesses mit Hilfe einer vereinfachten Sensoranordnung zu gestalten.The invention thus raises the problem of designing an arrangement which is independent of the influence of the emission coefficient of the cooking utensil or the contamination of the glass ceramic pane and for detecting the temperature of the cooking utensil floor and a method for controlling an optimum cooking process with the aid of a simplified sensor arrangement.

Erfindungsgemäß wird dieses Problem durch ein Kochfeld mit den Merkmalen des Patentanspruchs 1 sowie ein Verfahren zur Steuerung eines Kochprozesses mit den Merkmalen des Anspruchs 3 gelöst. Vorteilhafte Ausgestaltungen und Weiterbildungen der Erfindung ergeben sich aus dem nachfolgenden Unteranspruch.According to the invention this problem is solved by a hob with the features of claim 1 and a method for controlling a cooking process with the features of claim 3. Advantageous embodiments and modifications of the invention will become apparent from the following subclaim.

Die mit der Erfindung erreichbaren Vorteile bestehen insbesondere darin, dass auf ein Verhältnispyrometer sowie eine Lampe zur Reflexionsmessung sowie die dazu erforderlichen Verfahrensschritte zur Auswertung der Werte verzichtet werden kann.The advantages that can be achieved with the invention are, in particular, that it is possible to dispense with a ratio pyrometer and a lamp for reflection measurement as well as the process steps required for evaluating the values.

Mit dem beschriebenen Verfahren wird der Einfluss des Emissionskoeffizienten des Topfbodens sowie der Einfluss des Verschmutzungsgrades der Glaskeramikscheibe eliminiert. In einem vorteilhaften Ausführungsbeispiel der Erfindung ist eine Wärmesensoreinheit mit nur einem Thermopile ausreichend, um die Temperatur des Bodens am Kochgeschirr zu erfassen.With the described method, the influence of the emission coefficient of the pot bottom and the influence of the degree of contamination of the glass ceramic disk is eliminated. In an advantageous embodiment of the invention, a heat sensor unit with only one thermopile is sufficient to detect the temperature of the bottom of the cookware.

Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung rein schematisch dargestellt und wird nachfolgend näher beschrieben. Es zeigt

Figur 1
ein Ausführungsbeispiel eines erfindungsgemäßen Kochfelds in der Seitenansicht im Schnitt.
An embodiment of the invention is shown purely schematically in the drawing and will be described in more detail below. It shows
FIG. 1
an embodiment of a hob according to the invention in the side view in section.

Fig. 1 zeigt ein Ausführungsbeispiel eines erfindungsgemäßen Kochfelds. Das Kochfeld weist eine als Glaskeramikplatte ausgebildete Kochfeldplatte 1 auf, die wenigstens eine Kochzone 2 für ein darauf abzustellendes Kochgeschirr 3 aufweist. Das Kochgeschirr 3 ist mittels einer in der Einbaulage des Kochfeldes unterhalb der Kochfeldplatte 1 angeordneten und als Induktionsheizung ausgebildeten Heizeinrichtung 4 beheizbar. In dem vorliegenden Ausführungsbeispiel handelt es sich um ein Kochfeld mit mehreren Kochzonen, von denen lediglich eine einzige Kochzone 2 dargestellt und erläutert ist. Unterhalb der Kochfeldplatte 1 ist im Zentrum der Kochzone 2 eine Wärmesensoreinheit 5, vorzugsweise mindestens ein Thermopile, zur berührungslosen Temperaturmessung der Temperatur am Boden 6 des Kochgeschirrs 3 angeordnet. Die Leistung der Heizeinrichtung 4 wird in Abhängigkeit der Ausgangssignale der Wärmesensoreinheit 5 mittels der elektrischen Steuerung gesteuert oder geregelt. Die Wärmesensoreinheit 5 ist in einer Aufnahme 7 angeordnet, welche in wärmeleitenden Kontakt mit der Unterseite der Kochfeldplatte 1 steht. Die Aufnahme 7 ist topfartig und in Richtung der Unterseite der Kochfeldplatte 1 offen ausgebildet, so dass die vom Boden 6 des Kochgeschirrs 3 ausgehende Wärmestrahlung erfassbar ist. Die Aufnahme 7 ist mit einer integrierten Heizung 8 ausgebildet. Die Aufnahme 7 bildet mit der Heizung 8 einen Heizblock, der zur Durchführung des erfindungsgemäßen Verfahrens zur Erkennung der Temperatur am Boden 6 des Kochgeschirrs 3 und der davon abhängigen Steuerung der Leistung der Induktionsheizung (Heizeinrichtung 4) auf eine definierte Temperatur aufgeheizt wird. Für eine verbesserte Montage kann die Aufnahme 7 mehrteilig ausgebildet sein. Fig. 1 shows an embodiment of a hob according to the invention. The cooktop has a hob plate 1 designed as a glass ceramic plate, which has at least one cooking zone 2 for a cookware 3 to be placed on it. The cookware 3 is arranged by means of a heating device 4 arranged in the installed position of the hob below the hob plate 1 and designed as an induction heater. In the present embodiment, it is a hob with multiple cooking zones, of which only a single cooking zone 2 is shown and explained. Below the hob plate 1 is in the center of the cooking zone 2, a heat sensor unit 5, preferably at least one thermopile, arranged for non-contact temperature measurement of the temperature at the bottom 6 of the cookware 3. The power of the heater 4 is controlled or regulated depending on the output signals of the heat sensor unit 5 by means of the electric control. The heat sensor unit 5 is arranged in a receptacle 7 which is in heat-conducting contact with the underside of the hob plate 1. The receptacle 7 is pot-shaped and designed to be open in the direction of the underside of the hob plate 1, so that the heat radiation emanating from the bottom 6 of the cookware 3 can be detected. The receptacle 7 is formed with an integrated heater 8. The receptacle 7 forms with the heater 8 a heating block, which is heated to carry out the method according to the invention for detecting the temperature at the bottom 6 of the cookware 3 and the dependent control of the power of the induction heating (heater 4) to a defined temperature. For improved mounting, the receptacle 7 may be formed in several parts.

Zur Durchführung des erfindungsgemäßen Verfahrens wird der Heizblock auf eine Solltemperatur von z. B. 100°C aufgeheizt. Die Kontrolle der Heizblocktemperatur erfolgt entweder über einen im Thermopile integrierten Temperaturfühler oder einen separaten Temperaturfühler im Heizblock. Durch die sehr gut wärmeleitende Kontaktierung der Aufnahme 7 mit der Kochfeldplatte 1 wird auch die Glaskeramikscheibe im Bereich der Kochzone 2 mitbeheizt. Der Thermopile (Wärmesensoreinheit 5) ist mit einem Filter ausgestattet, das sich mit dem Transmissionswellenlängenbereich der Glaskeramikscheibe deckt bzw. überschneidet. Auf diese Weise kann die Wärmestrahlung des Bodens 6 des Kochgeschirrs 3 den Thermopile erreichen. Optional kann in der Aufnahme 7 auch ein zweiter Thermopile integriert sein, welches mit einem Filter ausgestattet ist, das sich mit dem nicht-transmittierenden Wellenlängenbereich der Glaskeramikscheibe deckt. Auf diese Weise misst dieser Thermopile nur die Temperatur auf der Unterseite der Glaskeramikscheibe.To carry out the method according to the invention, the heating block is heated to a desired temperature of z. B. 100 ° C heated. The heating block temperature is controlled either by a temperature sensor integrated in the thermopile or a separate temperature sensor in the heating block. Due to the very good heat-conducting contact of the receptacle 7 with the hob plate 1 and the glass ceramic pane is mitbeheizt in the cooking zone 2. The thermopile (heat sensor unit 5) is equipped with a filter that matches the transmission wavelength range of the glass-ceramic disk covers or overlaps. In this way, the heat radiation of the bottom 6 of the cookware 3 can reach the thermopile. Optionally, a second thermopile can also be integrated in the receptacle 7, which is equipped with a filter which coincides with the non-transmissive wavelength range of the glass-ceramic disc. In this way, this Thermopile measures only the temperature on the underside of the glass ceramic pane.

Wenn der Heizblock die definierte Temperatur erreicht hat, wird die Induktionsbeheizung eingeschaltet und somit direkt die Unterseite des Bodens 6 des Kochgeschirrs 3 erwärmt. Auch der Boden 6 heizt die Glaskeramikscheibe im Bereich der Kochzone 2 auf der das Kochgeschirr 3 steht mit auf. Die Leistung der Induktionsheizung wird in Abhängigkeit des Ausgangssignals der Wärmesensoreinheit 5 (Thermopile) geregelt. Für den Fall, dass die Temperatur des Heizblockes identisch ist mit der des Thermopiles sowie der der Glaskeramikscheibe und des Bodens 6 des Kochgeschirrs 3, ist das Ausgangssignal des Thermopiles gleich Null. Hier wird die Tatsache genutzt, dass ein Thermopile prinzipiell eine Differenzmessung zwischen Eigentemperatur und der Temperatur der Empfangsfläche durch Wärmestrahlung durchführt. Auf diese Weise kann die Temperatur des Bodens 6 sehr genau über die Temperatur des Heizblockes bzw. die Eigentemperatur des Thermopiles geregelt werden. Voraussetzung ist, dass alle Elemente dieses Systems (Thermopile, Heizblock, Boden am Kochgeschirr und Glaskeramikscheibe) exakt auf der gleichen Temperatur sind.When the heating block has reached the defined temperature, the induction heating is switched on, thus directly heating the underside of the bottom 6 of the cookware 3. The bottom 6 also heats the glass ceramic pane in the area of the cooking zone 2 on which the cookware 3 stands with. The power of the induction heating is regulated as a function of the output signal of the heat sensor unit 5 (thermopile). In the event that the temperature of the heating block is identical to that of the thermopile and the glass ceramic disc and the bottom 6 of the cookware 3, the output of the thermopile is equal to zero. Here, the fact is used that a thermopile principally performs a difference measurement between the actual temperature and the temperature of the receiving surface by thermal radiation. In this way, the temperature of the bottom 6 can be controlled very accurately by the temperature of the heating block or the temperature of the thermopile itself. The prerequisite is that all elements of this system (thermopile, heating block, bottom of the cookware and glass ceramic disk) are exactly at the same temperature.

Claims (3)

Kochfeld mit einer Kochfeldplatte (1) insbesondere aus Glaskeramik mit mindestens einer Kochzone (2) für ein darauf abzustellendes Kochgeschirr (3), einer elektrischen Steuerung zur Steuerung der Leistung einer unterhalb der Kochzone (2) angeordneten Heizeinrichtung (4), wobei im Zentrum der Kochzone (2) unterhalb der Kochfeldplatte (1) eine Wärmesensoreinheit (5) angeordnet ist,
dadurch gekennzeichnet,
dass die Wärmesensoreinheit (5) in einer topfartig und in Richtung der Unterseite der Kochfeldplatte (1) offen ausgebildeten Aufnahme angeordnet ist, welche in wärmeleitenden Kontakt mit der Unterseite der Kochfeldplatte (1) steht und über eine integrierte Heizeinrichtung (4) beheizbar ausgebildet ist.Hob with a hob plate (1), in particular made of glass ceramic, with at least one cooking zone (2) for a cooking utensil (3) to be placed thereon, an electric control for controlling the power of a heating device (4) arranged below the cooking zone (2), wherein in the center of Cooking zone (2) below the cooktop plate (1) a heat sensor unit (5) is arranged,
characterized,
in that the heat sensor unit (5) is arranged in a receptacle open in the manner of a pot and in the direction of the underside of the hob plate (1), which is in heat-conducting contact with the underside of the hob plate (1) and can be heated via an integrated heating device (4). Kochfeld mit einer Kochfeldplatte (1) nach Anspruch 2,
dadurch gekennzeichnet,
dass die Aufnahme mehrteilig ausgebildet ist.Hob with a hob plate (1) according to claim 2,
characterized,
that the receptacle is designed in several parts. Verfahren zur Steuerung eines Kochprozesses bei einem Kochfeld mit einer Kochfeldplatte (1) insbesondere aus Glaskeramik mit mindestens einer Kochzone (2) für ein darauf abzustellendes Kochgeschirr (3), welches über die unterhalb der Kochzone (2) angeordnete Heizeinrichtung (4) beheizbar ist, mit einer elektrischen Steuerung zur Steuerung der Leistung der Heizeinrichtung (4) und mit einer unterhalb der Kochzone (2) angeordneten Wärmesensoreinheit (5), über die der vom Kochgeschirr (3) nach unten ausgehende Wärmestrom detektiert wird, wobei die Leistung der Heizeinrichtung (4) in Abhängigkeit der Ausgangssignale der Wärmesensoreinheit (5) mittels der elektrischen Steuerung gesteuert oder geregelt wird,
dadurch gekennzeichnet,
dass die Wärmesensoreinheit (5) sowie eine mit der Unterseite der Kochzone (2) in wärmeleitenden Kontakt stehende Aufnahme mit integrierter Heizeinrichtung (4) für die Wärmesensoreinheit (5) in einem ersten Abschnitt des Verfahrens auf eine definierte Solltemperatur aufgeheizt werden und dass nach Erreichen dieser Solltemperatur die als Induktionsheizung ausgebildete Heizeinrichtung (4) zur Beheizung des Kochgeschirrs (3) eingeschaltet wird und das die Temperatur am Boden des Kochgeschirrs (3) im Wesentlichen der Solltemperatur entspricht, wenn das Ausgangssignal der Wärmesensoreinheit (5) gleich Null ist.Method for controlling a cooking process in a cooktop with a cooktop panel (1), in particular made of glass ceramic, with at least one cooking zone (2) for a cookware (3) to be placed thereon, which can be heated via the heating device (4) arranged below the cooking zone (2), with an electrical control for controlling the power of the heating device (4) and with a below the cooking zone (2) arranged heat sensor unit (5) over which the cooking utensil (3) downgoing heat flow is detected, wherein the power of the heating device (4 ) is controlled or regulated as a function of the output signals of the heat sensor unit (5) by means of the electrical control,
characterized,
in that the heat sensor unit (5) and a receptacle with integrated heat-conducting contact with the underside of the cooking zone (2) are heated to a defined setpoint temperature in a first section of the method and are heated to a defined setpoint temperature Set temperature designed as an induction heating heater (4) for heating the cookware (3) is turned on and the temperature at the bottom of the cookware (3) substantially corresponds to the desired temperature when the output of the heat sensor unit (5) is equal to zero.
EP09006109A 2008-05-06 2009-05-05 Hotplate with a hotplate field and method for controlling a cooking process Not-in-force EP2117281B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102008022387A DE102008022387A1 (en) 2008-05-06 2008-05-06 Hob with a cooktop panel and process to control a cooking process

Publications (3)

Publication Number Publication Date
EP2117281A2 true EP2117281A2 (en) 2009-11-11
EP2117281A3 EP2117281A3 (en) 2009-12-09
EP2117281B1 EP2117281B1 (en) 2010-08-18

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EP (1) EP2117281B1 (en)
AT (1) ATE478540T1 (en)
DE (2) DE102008022387A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2775791A1 (en) * 2013-03-04 2014-09-10 Miele & Cie. KG Cooking device

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012109204A1 (en) * 2012-09-28 2014-04-03 Miele & Cie. Kg cooking system
DE102019132486A1 (en) * 2019-11-29 2021-06-02 Miele & Cie. Kg Method for inductive heating of a medium by means of a small preparation device, small preparation device and system for carrying out the method

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004002058B3 (en) 2004-01-15 2005-09-08 Miele & Cie. Kg Method for controlling a cooking process in a hob and hob for performing the method

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4110588A (en) * 1976-08-23 1978-08-29 Holz George E Indirect induction apparatus for heating fluids
GB2069299B (en) * 1980-01-30 1983-06-22 Riccar Co Ltd Induction heating apparatus
DE19856140A1 (en) * 1998-12-04 2000-06-08 Bsh Bosch Siemens Hausgeraete Sensor-controlled cooktop with a sensor unit located below the cooktop
JP4123085B2 (en) * 2003-07-17 2008-07-23 松下電器産業株式会社 Induction heating cooker
JP4617676B2 (en) * 2004-01-27 2011-01-26 パナソニック株式会社 Induction heating cooker
ES2496970T3 (en) * 2006-02-21 2014-09-22 Panasonic Corporation Induction heating cooker

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004002058B3 (en) 2004-01-15 2005-09-08 Miele & Cie. Kg Method for controlling a cooking process in a hob and hob for performing the method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2775791A1 (en) * 2013-03-04 2014-09-10 Miele & Cie. KG Cooking device

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Publication number Publication date
EP2117281A3 (en) 2009-12-09
EP2117281B1 (en) 2010-08-18
DE502009000064D1 (en) 2010-09-30
DE102008022387A1 (en) 2009-11-12
ATE478540T1 (en) 2010-09-15

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