EP2445305A2 - Method for detecting containers arranged on a cooktop and cooktop - Google Patents

Method for detecting containers arranged on a cooktop and cooktop Download PDF

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Publication number
EP2445305A2
EP2445305A2 EP11186089A EP11186089A EP2445305A2 EP 2445305 A2 EP2445305 A2 EP 2445305A2 EP 11186089 A EP11186089 A EP 11186089A EP 11186089 A EP11186089 A EP 11186089A EP 2445305 A2 EP2445305 A2 EP 2445305A2
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EP
European Patent Office
Prior art keywords
hob
heating means
container
detection
inductors
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
EP11186089A
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German (de)
French (fr)
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EP2445305A3 (en
EP2445305B1 (en
Inventor
Etienne Alirol
Xavier Andre
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Groupe Brandt SAS
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FagorBrandt SAS
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Application filed by FagorBrandt SAS filed Critical FagorBrandt SAS
Publication of EP2445305A2 publication Critical patent/EP2445305A2/en
Publication of EP2445305A3 publication Critical patent/EP2445305A3/en
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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
    • 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
    • H05B3/00—Ohmic-resistance heating
    • H05B3/68—Heating arrangements specially adapted for cooking plates or analogous hot-plates
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B2213/00—Aspects relating both to resistive heating and to induction heating, covered by H05B3/00 and H05B6/00
    • H05B2213/03—Heating plates made out of a matrix of heating elements that can define heating areas adapted to cookware randomly placed on the heating plate
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B2213/00—Aspects relating both to resistive heating and to induction heating, covered by H05B3/00 and H05B6/00
    • H05B2213/05—Heating plates with pan detection means

Definitions

  • the present invention relates to a method for detecting the configuration of use of a hob.
  • This type of table comprises heating means arranged in a two-dimensional grid in the hob.
  • this type of table does not have predefined cooking zones, as described in the document FR 2 863 039 in the name of the Claimant.
  • the heating means are of a sufficiently small size that a conventional size cooking vessel covers a plurality of heating means.
  • a cooking zone is formed case by case, depending on the position and size of the container placed on the hob.
  • a cooking zone is constituted by a set of heating means covered at least partially by a container placed on the cooking surface. Only the heating means constituting a cooking zone associated with a detected container are activated for heating the container.
  • the heating means are analyzed one by one sequentially.
  • it is analyzed whether it is covered at least partially by a container placed on the work surface and its recovery rate is determined.
  • Running one by one the heating means generates a high latency in the detection of the configuration of use of the hob.
  • the document EP 2 034 799 describes a hob in which the detection of the set of inductors covered by a container placed on the hob, is implemented by means of the activation of a subset of inductors, the inductors of the subset being non-adjacent.
  • the inductors surrounding this inductor are then activated.
  • the recovery rate determined may be unstable over time and cause variations in the time of the heating power of a container for the same desired power demanded by a user of the hob.
  • the present invention aims to solve the aforementioned drawbacks and to provide a method for detecting the configuration of use of a hob to know the heating means can be activated for heating a container, quickly and stably in time.
  • the present invention aims according to a first aspect, a method of detecting the configuration of use of a hob having heating means distributed in a two-dimensional grid under a hob, comprising a step of activation implemented on subsets of means for detecting the presence of a container associated respectively with the heating means, the detection means of each subset being non-adjacent.
  • the activation step is repeated sequentially on said subsets of detection means until all the heating means are at least partially covered by at least one container placed on the plane of the sensor. work is identified.
  • the detection means activated simultaneously during the detection phase, not being adjacent, they have no influence between them, and all of the heating means covered by an identified container is stable over time .
  • the time used to identify the entirety of the heating means covered by at least one container placed on the worktop is reduced compared to the prior art.
  • the activation step is reiterated sequentially on all subsets of detection means of the hob.
  • the detection means of a single subset are activated simultaneously, the detection means of each subset being activated in turn.
  • the subsets of detection means correspond to a partition of all the detection means of the hob.
  • the present invention aims according to a second aspect, a hob having heating means distributed in a two-dimensional grid under a hob.
  • the hob comprises means adapted to implement the method of detecting the configuration of a hob according to the invention.
  • the hob includes means for activating the subassemblies of means for detecting the presence of a container respectively associated with the heating means, the detection means of each subassembly being non-adjacent, and comprises a microprocessor controlling the sequential reiteration of the activation of said subsets of detection means until all of the heating means covered at least in part by at least one container is placed on the working plane is identified.
  • the heating means and the detection means are inductors.
  • This hob has features and advantages similar to those described above in connection with the method of detecting the configuration of use of a hob.
  • the hob 10 has a hob 11 for receiving containers on the hob 10.
  • This hob 10 comprises heating means 12 distributed in a two-dimensional grid beneath the hob 11 of the hob 10.
  • the heating means 12 may consist of inductors 12 distributed in the hob 11.
  • the inductors are staggered as shown in FIG. figure 1 , as well as figure 2 which will be described later.
  • the inductors may be arranged according to a distribution in rows and columns, that is to say in a matrix arrangement.
  • Each inductor of the hob is independently controlled and operated only when a container covers at least a portion of the inductor.
  • the inductors 12 constitute both heating means and means for detecting the presence of a container.
  • the heating means are inductors constituting both heating means and detection means.
  • each radiant element must be associated with a system for detecting the presence of a container, such as for example a sensor, or an inductor.
  • FIG. 1 it has been shown in figure 1 , three cooking containers R1, R2, R3 arranged on the cooking surface 11 of the hob 10.
  • each cooking zone Z1, Z2, Z3 are constituted, each cooking zone Z1, Z2, Z3 respectively corresponding to each container R1, R2, R3.
  • Each cooking zone Z1, Z2, Z3 is constituted by a set of heating means 12 at least partially covered by a container R1, R2, R3.
  • the inductors covered by the first container R1, constituting a first cooking zone Z1, are activated.
  • the hob 10 further comprises a control and display panel 20 for the control of the hob 10 by the user.
  • control and display panel 20 is placed near a front edge 10a of the hob 10, intended to be placed facing the user standing in front of the table. cooking 10.
  • the containers R1, R2, R3 placed on the hob 10 are represented on the control and display panel 20.
  • the user recognizing on the control and display panel 20 the container placed on the hob 10, can control the heating of each container R1, R2, R3.
  • the hob 10 also comprises a microprocessor adapted to implement the method of detecting the configuration of use of a hob according to the invention which will be described later with reference to the figure 2 .
  • the microprocessor (not shown in the figures) comprises in particular, means for activating the means for detecting the presence of a container associated respectively with the heating means, that is to say here it can control the activation of the inductors.
  • the figure 2 illustrates heating means 12 or inductors distributed in a two-dimensional grid under a hob of the hob.
  • the heating means 12 are distributed in lines in a X-axis direction, each line being arranged so that the inductors of the two adjacent lines are arranged in staggered rows.
  • all of the heating means 12 or inductors of the hob 10 is divided into subsets of heating means or subsets of inductors.
  • the inductors 12 constituting each subset of heating means are shown with a different pattern or frame.
  • a first subset of heating means 12a is shown in broken lines
  • a second subset of heating means 12b is represented by horizontal parallel hatching
  • a third subset of heating means 12c is represented by hatching.
  • vertical parallels and a fourth subset of heating means 12d is represented by oblique parallel hatching.
  • all the heating means 12 of the hob 10 is divided into four subsets of heating means 12a, 12b, 12c, 12d.
  • the number of subsets of heating means may be different.
  • the heating means of the same subset are non-adjacent, that is to say that there is at least one inductor 12 disposed between them.
  • an activation step is carried out on the subsets of heating means 12a, 12b, 12c, 12d or subassemblies. of inductors 12a, 12b, 12c, 12d.
  • the activation step is repeated sequentially on the inductor subassemblies 12a, 12b, 12c, 12d until all the inductors 12 are covered at least in part by at least one container R1, R2, R3 laid on the worktop 11 is identified.
  • the activation step is reiterated sequentially on the four inductor subassemblies 12a, 12b, 12c, 12d of the hob 10.
  • inductors belonging to the first subset of inductors 12a are activated simultaneously, then the inductors belonging to the second subset 12b are activated simultaneously, followed by the sequential activation of inductors 12c, 12d of the third and fourth subset. in their turn.
  • the result of this activation step is the identification of the inductors 12 covered at least in part by the containers R1, R2, R3, placed on the hob 10.
  • the heating means 12 here the Inductors, identified as being covered by the corresponding container R1, R2, R3, are activated.
  • the recovery rate determined for the inductors covered by a container is reliable, and stable over time.
  • the detection time of the use configuration of the hob 10 is particularly reduced compared to the time used in the prior art.
  • T total NOT boy Wut ⁇ x T ind
  • Ng being the number of inductor subsets, and T ind the time necessary for the detection of the presence of a container on an inductor 12.
  • the number of inductors is 36
  • the number of inductor subsets is 4, and the time required for the detection of the presence of a container on a inductor T ind. is 60 ms, the time required to know the configuration of use of the hob 10 is 240 ms.
  • the time is notably reduced compared to the prior art where the detection of the inductors 12 is performed on all the inductor means of the hob 10 sequentially, the time required for the detection of the configuration of the hob. use of the hob being 2.16 s.
  • the configuration of use of a hob that is to say all the heating means which are covered by a container, and the recovery rate of each means heating this set by the container, is known quickly and stably in time.
  • the detection of the cooktop usage pattern does not cause any inconvenience when using the cooktop.
  • heating means may be radiant elements associated with a system for detecting the presence of a container.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Electric Stoves And Ranges (AREA)

Abstract

The method involves implementing activation step on sub-sets of detection units associated to subsets of heating units (12a-12d) i.e. inductors, where the detection units detect the presence of a container. The activation step is repeated sequentially on the sub-sets of detection units until wholeness of the heating units covered by the container positioned on a cooking surface is identified, where the subsets of the detection units correspond to a partition of total detection units of a cook top. An independent claim is also included for a cook top, comprising heating units distributed along a bi-dimensional grid under a cooking surface.

Description

La présente invention concerne un procédé de détection de la configuration d'utilisation d'une table de cuisson.The present invention relates to a method for detecting the configuration of use of a hob.

Elle concerne également une table de cuisson adaptée à mettre en oeuvre le procédé de détection conforme à l'invention.It also relates to a hob adapted to implement the detection method according to the invention.

Elle concerne de manière générale une table de cuisson dans laquelle un récipient peut être posé et chauffé à n'importe quel emplacement sur un plan de cuisson de cette table de cuisson.It generally relates to a hob in which a container can be placed and heated at any location on a hob of this hob.

Ce type de table comporte des moyens de chauffage disposés suivant une trame bidimensionnelle dans le plan de cuisson.This type of table comprises heating means arranged in a two-dimensional grid in the hob.

Ainsi, ce type de table n'a pas de zones de cuisson prédéfinies, comme décrit dans le document FR 2 863 039 au nom de la Demanderesse.Thus, this type of table does not have predefined cooking zones, as described in the document FR 2 863 039 in the name of the Claimant.

Les moyens de chauffage sont d'une taille suffisamment réduite pour qu'un récipient de cuisson de taille conventionnelle couvre plusieurs moyens de chauffage.The heating means are of a sufficiently small size that a conventional size cooking vessel covers a plurality of heating means.

Dans ce type de tables, une zone de cuisson est constituée au cas par cas, en fonction de la position et de la taille du récipient posé sur le plan de cuisson.In this type of table, a cooking zone is formed case by case, depending on the position and size of the container placed on the hob.

Ainsi, une zone de cuisson est constituée par un ensemble de moyens de chauffage recouverts au moins partiellement par un récipient posé sur le plan de cuisson. Seuls les moyens de chauffage constituant une zone de cuisson associée à un récipient détecté sont activés pour le chauffage du récipient.Thus, a cooking zone is constituted by a set of heating means covered at least partially by a container placed on the cooking surface. Only the heating means constituting a cooking zone associated with a detected container are activated for heating the container.

Par conséquent, avant et pendant la mise en oeuvre du chauffage des récipients, il est nécessaire de connaître les zones de cuisson présentes dans la table de cuisson.Therefore, before and during the implementation of the heating of the containers, it is necessary to know the cooking zones present in the hob.

Pour connaître les zones de cuisson, il faut connaître la configuration d'utilisation de la table de cuisson, c'est-à-dire l'ensemble des moyens de chauffage qui sont recouverts au moins partiellement par un récipient, ainsi que le taux de recouvrement de chaque moyen de chauffage de cet ensemble par le récipient.To know the cooking zones, it is necessary to know the configuration of use of the hob, that is to say all the heating means which are covered at least partially by a container, as well as the recovery rate of each heating means of this set by the container.

Dans ce but, dans certaines tables de cuisson, les moyens de chauffage sont analysés un par un séquentiellement. Ainsi, pour chaque moyen de chauffage, on analyse s'il est recouvert au moins partiellement par un récipient posé sur le plan de travail et on détermine son taux de recouvrement.For this purpose, in some hobs, the heating means are analyzed one by one sequentially. Thus, for each heating means, it is analyzed whether it is covered at least partially by a container placed on the work surface and its recovery rate is determined.

Ceci est décrit également dans le document FR 2 803 039 .This is also described in the document FR 2 803 039 .

Le fait de parcourir un par un les moyens de chauffage génère un temps de latence élevé dans la détection de la configuration d'utilisation de la table de cuisson.Running one by one the heating means generates a high latency in the detection of the configuration of use of the hob.

Ceci peut provoquer par exemple l'interruption de l'ébullition d'un liquide dans une casserole, ce qui peut être gênant pour l'utilisateur de la table de cuisson.This can cause for example the interruption of the boiling of a liquid in a pan, which can be inconvenient for the user of the hob.

Le document EP 2 034 799 décrit une table de cuisson dans laquelle la détection de l'ensemble d'inducteurs recouverts par un récipient posé sur la table de cuisson, est mise en oeuvre au moyen de l'activation d'un sous-ensemble d'inducteurs, les inducteurs du sous-ensemble étant non adjacents.The document EP 2 034 799 describes a hob in which the detection of the set of inductors covered by a container placed on the hob, is implemented by means of the activation of a subset of inductors, the inductors of the subset being non-adjacent.

Si l'on détecte qu'un inducteur appartenant au sous-ensemble est recouvert par un récipient, les inducteurs entourant cet inducteur sont ensuite activés.If it is detected that an inductor belonging to the subset is covered by a container, the inductors surrounding this inductor are then activated.

Néanmoins, des inducteurs adjacents activés simultanément s'influencent entre eux.Nevertheless, adjacent inductors activated simultaneously influence each other.

Par conséquent, le taux de recouvrement déterminé peut être instable dans le temps et provoquer des variations dans le temps de la puissance de chauffe d'un récipient pour une même puissance de consigne demandée par un utilisateur de la table de cuisson.Therefore, the recovery rate determined may be unstable over time and cause variations in the time of the heating power of a container for the same desired power demanded by a user of the hob.

Ceci peut provoquer par exemple une variation dans l'intensité de l'ébullition d'un liquide d'une casserole pour une même puissance de consigne demandée, ce qui peut être gênant pour l'utilisateur de la table de cuisson.This can cause for example a variation in the boiling intensity of a liquid of a pan for the same desired power demand, which can be inconvenient for the user of the hob.

La présente invention a pour but de résoudre les inconvénients précités et de proposer un procédé de détection de la configuration d'utilisation d'une table de cuisson permettant de connaître les moyens de chauffage susceptibles d'être activés pour la chauffe d'un récipient, de manière rapide et stable dans le temps.The present invention aims to solve the aforementioned drawbacks and to provide a method for detecting the configuration of use of a hob to know the heating means can be activated for heating a container, quickly and stably in time.

A cet effet, la présente invention vise selon un premier aspect, un procédé de détection de la configuration d'utilisation d'une table de cuisson comportant des moyens de chauffage répartis selon une trame bidimensionnelle sous un plan de cuisson, comportant une étape d'activation mise en oeuvre sur des sous-ensembles de moyens de détection de la présence d'un récipient associés respectivement aux moyens de chauffage, les moyens de détection de chaque sous-ensemble étant non adjacents.For this purpose, the present invention aims according to a first aspect, a method of detecting the configuration of use of a hob having heating means distributed in a two-dimensional grid under a hob, comprising a step of activation implemented on subsets of means for detecting the presence of a container associated respectively with the heating means, the detection means of each subset being non-adjacent.

Selon l'invention, l'étape d'activation est réitérée séquentiellement sur lesdits sous-ensembles de moyens de détection jusqu'à ce que l'intégralité des moyens de chauffage recouverts au moins en partie par au moins un récipient posé sur le plan de travail est identifiée.According to the invention, the activation step is repeated sequentially on said subsets of detection means until all the heating means are at least partially covered by at least one container placed on the plane of the sensor. work is identified.

Ainsi, les moyens de détection activés simultanément lors de la phase de détection, n'étant pas adjacents, ils n'ont pas d'influence entre eux, et l'intégralité des moyens de chauffage recouverts par un récipient identifiée est stable dans le temps.Thus, the detection means activated simultaneously during the detection phase, not being adjacent, they have no influence between them, and all of the heating means covered by an identified container is stable over time .

En outre, le temps employé pour identifier l'intégralité des moyens de chauffage recouverts par au moins un récipient posé sur le plan de travail, est réduit par rapport à l'art antérieur.In addition, the time used to identify the entirety of the heating means covered by at least one container placed on the worktop, is reduced compared to the prior art.

Ainsi, la configuration d'utilisation de la table de cuisson est connue rapidement et de manière stable dans le temps, ne causant pas de désagrément dans l'utilisation de la table de cuisson.Thus, the use configuration of the hob is known quickly and stably over time, causing no inconvenience in the use of the hob.

Avantageusement, l'étape d'activation est réitérée séquentiellement sur tous les sous-ensembles de moyens de détection de la table de cuisson.Advantageously, the activation step is reiterated sequentially on all subsets of detection means of the hob.

Ainsi, les moyens de détection d'un seul sous-ensemble sont activés simultanément, les moyens de détection de chaque sous-ensemble étant activés à leur tour.Thus, the detection means of a single subset are activated simultaneously, the detection means of each subset being activated in turn.

Selon une caractéristique, les sous-ensembles de moyens de détection correspondent à une partition de la totalité des moyens de détection de la table de cuisson.According to one characteristic, the subsets of detection means correspond to a partition of all the detection means of the hob.

Ainsi, tous les moyens de détection de la table de cuisson sont analysés.Thus, all the detection means of the hob are analyzed.

La présente invention vise selon un second aspect, une table de cuisson comportant des moyens de chauffage répartis selon une trame bidimensionnelle sous un plan de cuisson.The present invention aims according to a second aspect, a hob having heating means distributed in a two-dimensional grid under a hob.

Selon l'invention, la table de cuisson comporte des moyens adaptés à mettre en oeuvre le procédé de détection de la configuration d'une table de cuisson conforme à l'invention.According to the invention, the hob comprises means adapted to implement the method of detecting the configuration of a hob according to the invention.

Ainsi, la table de cuisson comporte des moyens d'activation des sous-ensembles de moyens de détection de la présence d'un récipient associés respectivement aux moyens de chauffage, les moyens de détection de chaque sous-ensemble étant non adjacents, et comporte un microprocesseur commandant la réitération séquentielle de l'activation desdits sous-ensembles de moyens de détection jusqu'à ce que l'intégralité des moyens de chauffage recouverts au moins en partie par au moins un récipient est posé sur le plan de travail est identifiée.Thus, the hob includes means for activating the subassemblies of means for detecting the presence of a container respectively associated with the heating means, the detection means of each subassembly being non-adjacent, and comprises a microprocessor controlling the sequential reiteration of the activation of said subsets of detection means until all of the heating means covered at least in part by at least one container is placed on the working plane is identified.

Dans un mode de réalisation, les moyens de chauffage et les moyens de détection sont des inducteurs.In one embodiment, the heating means and the detection means are inductors.

Cette table de cuisson présente des caractéristiques et avantages analogues à ceux décrits précédemment en relation avec le procédé de détection de la configuration d'utilisation d'une table de cuisson.This hob has features and advantages similar to those described above in connection with the method of detecting the configuration of use of a hob.

D'autres particularités et avantages de l'invention apparaîtront encore dans la description ci-après.Other features and advantages of the invention will become apparent in the description below.

Aux dessins annexés, donnés à titre d'exemple non limitatif :

  • la figure 1 est une vue schématique représentant une table de cuisson conforme à un mode de réalisation de l'invention; et
  • la figure 2 est un schéma illustrant les moyens de chauffage répartis selon une trame bidimensionnelle sous un plan de cuisson.
In the accompanying drawings, given by way of non-limiting example:
  • the figure 1 is a schematic view showing a hob according to an embodiment of the invention; and
  • the figure 2 is a diagram illustrating the heating means distributed in a two-dimensional grid under a hob.

On va décrire tout d'abord, en référence à la figure 1 une table de cuisson conforme à un mode de réalisation de l'invention, adaptée à mettre en oeuvre le procédé de détection de la configuration d'utilisation selon un mode de réalisation de l'invention.We will describe first, with reference to the figure 1 a hob according to an embodiment of the invention, adapted to implement the detection method of the use configuration according to one embodiment of the invention.

La table de cuisson 10 comporte un plan de cuisson 11 destiné à recevoir des récipients sur la table de cuisson 10.The hob 10 has a hob 11 for receiving containers on the hob 10.

Cette table de cuisson 10 comprend des moyens de chauffage 12 répartis suivant une trame bidimensionnelle sous le plan de cuisson 11 de la table de cuisson 10.This hob 10 comprises heating means 12 distributed in a two-dimensional grid beneath the hob 11 of the hob 10.

Dans un mode de réalisation, les moyens de chauffage 12 peuvent être constitués d'inducteurs 12 répartis dans le plan de cuisson 11.In one embodiment, the heating means 12 may consist of inductors 12 distributed in the hob 11.

Ces inducteurs sont disposés côte à côté de manière à couvrir l'ensemble de la surface du plan de cuisson 11.These inductors are arranged side by side so as to cover the entire surface of the hob 11.

Dans cet exemple, les inducteurs sont disposés en quinconce comme illustré à la figure 1, ainsi qu'à la figure 2 qui sera décrite ultérieurement.In this example, the inductors are staggered as shown in FIG. figure 1 , as well as figure 2 which will be described later.

Dans d'autres modes de réalisation, les inducteurs peuvent être disposés selon une répartition en lignes et colonnes, c'est-à-dire selon une disposition matricielle.In other embodiments, the inductors may be arranged according to a distribution in rows and columns, that is to say in a matrix arrangement.

Chaque inducteur de la table de cuisson est commandé indépendamment et mis en fonctionnement uniquement lorsqu'un récipient recouvre au moins une partie de cet inducteur.Each inductor of the hob is independently controlled and operated only when a container covers at least a portion of the inductor.

Dans cet exemple, les inducteurs 12 constituent à la fois, des moyens de chauffage et des moyens de détection de la présence d'un récipient.In this example, the inductors 12 constitute both heating means and means for detecting the presence of a container.

Ainsi, dans la suite de la description, on considère que les moyens de chauffage sont des inducteurs constituant à la fois des moyens de chauffage et des moyens de détection.Thus, in the following description, it is considered that the heating means are inductors constituting both heating means and detection means.

Bien entendu, la présente invention pourrait également être mise en oeuvre pour d'autres types de moyens de chauffage, par exemple, pour des éléments radiants disposés également selon une trame bidimensionnelle sous le plan de cuisson. Dans ce cas, chaque élément radiant doit être associé à un système permettant la détection de la présence d'un récipient, tel que par exemple un capteur, ou un inducteur.Of course, the present invention could also be implemented for other types of heating means, for example, for radiant elements also arranged in a two-dimensional grid beneath the hob. In this case, each radiant element must be associated with a system for detecting the presence of a container, such as for example a sensor, or an inductor.

A titre d'exemple nullement limitatif, on a illustré à la figure 1, trois récipients de cuisson R1, R2, R3 disposés sur le plan de cuisson 11 de la table de cuisson 10.By way of non-limiting example, it has been shown in figure 1 , three cooking containers R1, R2, R3 arranged on the cooking surface 11 of the hob 10.

Ainsi, dans cet exemple, trois zones de cuisson Z1, Z2, Z3 sont constituées, chaque zone de cuisson Z1, Z2, Z3 correspondant respectivement à chaque récipient R1, R2, R3.Thus, in this example, three cooking zones Z1, Z2, Z3 are constituted, each cooking zone Z1, Z2, Z3 respectively corresponding to each container R1, R2, R3.

Chaque zone de cuisson Z1, Z2, Z3 est constituée par un ensemble de moyens de chauffage 12 recouverts au moins partiellement par un récipient R1, R2, R3.Each cooking zone Z1, Z2, Z3 is constituted by a set of heating means 12 at least partially covered by a container R1, R2, R3.

Ainsi, par exemple, si un utilisateur commande la chauffe d'un premier récipient R1, les inducteurs recouverts par le premier récipient R1, constituant une première zone de cuisson Z1, sont activés.Thus, for example, if a user controls the heating of a first container R1, the inductors covered by the first container R1, constituting a first cooking zone Z1, are activated.

La table de cuisson 10 comporte en outre un panneau de commande et de visualisation 20 pour la commande de la table de cuisson 10 par l'utilisateur.The hob 10 further comprises a control and display panel 20 for the control of the hob 10 by the user.

Dans cet exemple de réalisation, le panneau de commande et de visualisation 20 est placé à proximité d'un bord avant 10a de la table de cuisson 10, destiné à être placé en vis-à-vis de l'utilisateur se tenant devant la table de cuisson 10.In this exemplary embodiment, the control and display panel 20 is placed near a front edge 10a of the hob 10, intended to be placed facing the user standing in front of the table. cooking 10.

Dans un mode de réalisation, lorsque la table de cuisson est mise en fonctionnement, les récipients R1, R2, R3 posés sur la table de cuisson 10 sont représentés sur le panneau de commande et de visualisation 20.In one embodiment, when the hob is put into operation, the containers R1, R2, R3 placed on the hob 10 are represented on the control and display panel 20.

Ainsi, l'utilisateur, reconnaissant sur le panneau de commande et de visualisation 20 le récipient posé sur la table de cuisson 10, peut commander la chauffe de chaque récipient R1, R2, R3.Thus, the user, recognizing on the control and display panel 20 the container placed on the hob 10, can control the heating of each container R1, R2, R3.

La table de cuisson 10 comporte également un microprocesseur adapté à mettre en oeuvre le procédé de détection de la configuration d'utilisation d'une table de cuisson conforme à l'invention qui sera décrit ultérieurement en référence à la figure 2.The hob 10 also comprises a microprocessor adapted to implement the method of detecting the configuration of use of a hob according to the invention which will be described later with reference to the figure 2 .

Le microprocesseur (non représenté sur les figures) comporte en particulier, des moyens d'activation des moyens de détection de la présence d'un récipient associé respectivement aux moyens de chauffage, c'est-à-dire qu'ici il peut commander l'activation des inducteurs.The microprocessor (not shown in the figures) comprises in particular, means for activating the means for detecting the presence of a container associated respectively with the heating means, that is to say here it can control the activation of the inductors.

On va décrire ensuite, en référence à la figure 2, le procédé de détection de la configuration d'utilisation d'une table de cuisson conforme à un mode de réalisation de l'invention.We will then describe, with reference to the figure 2 , the method of detecting the use configuration of a hob according to an embodiment of the invention.

La figure 2 illustre les moyens de chauffage 12 ou inducteurs répartis selon une trame bidimensionnelle sous un plan de cuisson de la table de cuisson.The figure 2 illustrates heating means 12 or inductors distributed in a two-dimensional grid under a hob of the hob.

Ainsi, dans cet exemple, les moyens de chauffage 12 sont répartis en lignes selon une direction des abscisses X, chaque ligne étant disposée de sorte que les inducteurs des deux lignes adjacentes soient disposés en quinconce.Thus, in this example, the heating means 12 are distributed in lines in a X-axis direction, each line being arranged so that the inductors of the two adjacent lines are arranged in staggered rows.

Dans cet exemple, la totalité des moyens de chauffage 12 ou inducteurs de la table de cuisson 10 est divisée en sous-ensembles de moyens de chauffage ou sous-ensembles d'inducteurs.In this example, all of the heating means 12 or inductors of the hob 10 is divided into subsets of heating means or subsets of inductors.

Sur la figure 2, les inducteurs 12 constituant chaque sous-ensemble de moyens de chauffage sont représentés avec un motif ou trame différente.On the figure 2 the inductors 12 constituting each subset of heating means are shown with a different pattern or frame.

Ainsi, un premier sous-ensemble de moyens de chauffage 12a est représenté en pointillé, un deuxième sous-ensemble de moyens de chauffage 12b est représenté par des hachures parallèles horizontales, un troisième sous-ensemble de moyens de chauffage 12c est représenté par des hachures parallèles verticales, et un quatrième sous-ensemble de moyens de chauffage 12d est représenté par des hachures parallèles obliques.Thus, a first subset of heating means 12a is shown in broken lines, a second subset of heating means 12b is represented by horizontal parallel hatching, a third subset of heating means 12c is represented by hatching. vertical parallels, and a fourth subset of heating means 12d is represented by oblique parallel hatching.

Ainsi, dans cet exemple, la totalité des moyens de chauffage 12 de la table de cuisson 10 est divisée en quatre sous-ensembles de moyens de chauffage 12a, 12b, 12c, 12d.Thus, in this example, all the heating means 12 of the hob 10 is divided into four subsets of heating means 12a, 12b, 12c, 12d.

Bien entendu, dans d'autres modes de réalisation le nombre de sous-ensemble de moyens de chauffage peut être différent.Of course, in other embodiments the number of subsets of heating means may be different.

Comme illustré à la figure 2, les moyens de chauffage d'un même sous-ensemble sont non adjacents, c'est-à-dire qu'il existe au moins un inducteur 12 disposé entre eux.As illustrated in figure 2 , the heating means of the same subset are non-adjacent, that is to say that there is at least one inductor 12 disposed between them.

Dans ce type de table de cuisson 10, une étape de détection des récipients R1, R2, R3 posés sur le plan de cuisson 11 est mise en oeuvre une fois que la table de cuisson 10 est mise en fonctionnement par l'utilisateur, ainsi que régulièrement le long du fonctionnement de la table de cuisson 10.In this type of hob 10, a step of detecting the containers R1, R2, R3 placed on the hob 11 is implemented. when the cooktop 10 is operated by the user, as well as regularly along the operation of the cooktop 10.

Comme indiqué ci-dessous, la détection des récipients R1, R2, R3 est bien connue de l'état de la technique et est décrit notamment dans le document FR 2 863 039 .As indicated below, the detection of the containers R1, R2, R3 is well known from the state of the art and is described in particular in the document FR 2 863 039 .

En résultat de l'étape de détection des récipients, l'ensemble des moyens de chauffage recouverts au moins partiellement par un récipient, ainsi que le taux de recouvrement de chaque moyen de chauffage recouvert par un récipient sont connus.As a result of the container detection step, all heating means at least partially covered by a container, as well as the recovery rate of each heating means covered by a container are known.

Ainsi, on connaît la configuration de la table de cuisson 10.Thus, the configuration of the hob 10 is known.

Dans ce mode de réalisation, afin de détecter la configuration d'utilisation de la table de cuisson 10, une étape d'activation est mise en oeuvre sur les sous-ensembles de moyens de chauffage 12a, 12b, 12c, 12d ou sous-ensembles d'inducteurs 12a, 12b, 12c, 12d.In this embodiment, in order to detect the use configuration of the hob 10, an activation step is carried out on the subsets of heating means 12a, 12b, 12c, 12d or subassemblies. of inductors 12a, 12b, 12c, 12d.

L'étape d'activation est réitérée séquentiellement sur les sous-ensembles d'inducteurs 12a, 12b, 12c, 12d jusqu'à ce que l'intégralité des inducteurs 12 recouverts au moins en partie par au moins un récipient R1, R2, R3 posé sur le plan de travail 11 est identifiée.The activation step is repeated sequentially on the inductor subassemblies 12a, 12b, 12c, 12d until all the inductors 12 are covered at least in part by at least one container R1, R2, R3 laid on the worktop 11 is identified.

Dans cet exemple, l'étape d'activation est réitérée séquentiellement sur les quatre sous-ensembles d'inducteurs 12a, 12b, 12c, 12d de la table de cuisson 10.In this example, the activation step is reiterated sequentially on the four inductor subassemblies 12a, 12b, 12c, 12d of the hob 10.

Ainsi, les inducteurs appartenant au premier sous-ensemble d'inducteurs 12a sont activés simultanément, ensuite les inducteurs appartenant au deuxième sous-ensemble 12b sont activés simultanément, suivis de l'activation séquentielle des inducteurs 12c, 12d du troisième et quatrième sous-ensemble à leur tour.Thus, the inductors belonging to the first subset of inductors 12a are activated simultaneously, then the inductors belonging to the second subset 12b are activated simultaneously, followed by the sequential activation of inductors 12c, 12d of the third and fourth subset. in their turn.

Le résultat de cette étape d'activation est l'identification des inducteurs 12 recouverts au moins en partie par les récipients R1, R2, R3, posés sur la table de cuisson 10.The result of this activation step is the identification of the inductors 12 covered at least in part by the containers R1, R2, R3, placed on the hob 10.

Ainsi, lorsque l'utilisateur de la table de cuisson 10, commande la chauffe de l'un des récipients R1, R2, R3, les moyens de chauffage 12, ici des inducteurs, identifiés comme étant recouverts par le récipient R1, R2, R3 correspondant, sont activés.Thus, when the user of the hob 10, controls the heating of one of the containers R1, R2, R3, the heating means 12, here the Inductors, identified as being covered by the corresponding container R1, R2, R3, are activated.

Dès lors que les inducteurs activés en même temps (inducteurs appartenant au sous-ensemble d'inducteurs) ne sont pas adjacents, il n'existe pas d'influence entre eux.Since the inductors activated at the same time (inductors belonging to the subset of inductors) are not adjacent, there is no influence between them.

Ainsi, le taux de recouvrement déterminé pour les inducteurs recouverts par un récipient est fiable, et stable dans le temps.Thus, the recovery rate determined for the inductors covered by a container is reliable, and stable over time.

Le temps de détection de la configuration d'utilisation de la table de cuisson 10 est notamment réduit par rapport au temps employé dans l'art antérieur.The detection time of the use configuration of the hob 10 is particularly reduced compared to the time used in the prior art.

Le temps requis pour la détection de la configuration d'utilisation de la table de cuisson 10 est donné par l'équation suivante : T total = N g ⁢ x T ind

Figure imgb0001
The time required for the detection of the use configuration of the hob 10 is given by the following equation: T total = NOT boy Wut ⁢ x T ind
Figure imgb0001

Ng étant le nombre de sous-ensembles d'inducteurs, et Tind le temps nécessaire pour la détection de la présence d'un récipient sur un inducteur 12.Ng being the number of inductor subsets, and T ind the time necessary for the detection of the presence of a container on an inductor 12.

A titre d'exemple nullement limitatif, si le nombre d'inducteurs est de 36, le nombre de sous-ensembles d'inducteurs est de 4, et le temps nécessaire pour la détection de la présence d'un récipient sur un inducteur Tind est de 60 ms, le temps nécessaire pour connaître la configuration d'utilisation de la table de cuisson 10 est de 240 ms.By way of non-limiting example, if the number of inductors is 36, the number of inductor subsets is 4, and the time required for the detection of the presence of a container on a inductor T ind. is 60 ms, the time required to know the configuration of use of the hob 10 is 240 ms.

Par conséquent, le temps est notamment réduit par rapport à l'art antérieur où la détection des inducteurs 12 est réalisée sur l'intégralité des moyens d'inducteurs de la table de cuisson 10 séquentiellement, le temps requis pour la détection de la configuration d'utilisation de la table de cuisson étant de 2,16 s.Therefore, the time is notably reduced compared to the prior art where the detection of the inductors 12 is performed on all the inductor means of the hob 10 sequentially, the time required for the detection of the configuration of the hob. use of the hob being 2.16 s.

Ainsi, grâce à l'invention, la configuration d'utilisation d'une table de cuisson, c'est-à-dire l'ensemble des moyens de chauffage qui sont recouverts par un récipient, ainsi que le taux de recouvrement de chaque moyen de chauffage de cet ensemble par le récipient, est connu rapidement et de manière stable dans le temps.Thus, thanks to the invention, the configuration of use of a hob, that is to say all the heating means which are covered by a container, and the recovery rate of each means heating this set by the container, is known quickly and stably in time.

Par conséquent, la détection de la configuration d'utilisation de la table de cuisson ne cause pas de désagrément lors de l'utilisation de la table de cuisson.Therefore, the detection of the cooktop usage pattern does not cause any inconvenience when using the cooktop.

Bien entendu, la présente invention n'est pas limitée aux exemples de réalisation décrits précédemment.Of course, the present invention is not limited to the embodiments described above.

En particulier, des moyens de chauffage peuvent être des éléments radiants associés à un système de détection de la présence d'un récipient.In particular, heating means may be radiant elements associated with a system for detecting the presence of a container.

Claims (6)

Procédé de détection de la configuration d'utilisation d'une table de cuisson (10) comportant des moyens de chauffage (12) répartis selon une trame bidimensionnelle sous un plan de cuisson (11), comportant une étape d'activation mise en oeuvre sur des sous-ensembles de moyens de détection de la présence d'un récipient associés respectivement aux moyens de chauffage (12a, 12b, 12c, 12d), les moyens de détection de chaque sous-ensemble (12a, 12b, 12c, 12d) étant non adjacents, caractérisé en ce que l'étape d'activation est réitérée séquentiellement sur lesdits sous-ensembles de moyens de détection (12a, 12b, 12c, 12d) jusqu'à ce que l'intégralité des moyens de chauffage (12) recouverts au moins en partie par au moins un récipient (R1, R2, R3) posé sur le plan de travail (11) est identifiée.Method for detecting the use configuration of a hob (10) comprising heating means (12) distributed in a two-dimensional grid under a hob (11), comprising an activation step implemented on subsets of means for detecting the presence of a container associated respectively with the heating means (12a, 12b, 12c, 12d), the detection means of each subassembly (12a, 12b, 12c, 12d) being non-adjacent, characterized in that the activation step is repeated sequentially on said subsets of detection means (12a, 12b, 12c, 12d) until all the heating means (12) covered at least in part by at least one container (R1, R2, R3) placed on the worktop (11) is identified. Procédé de détection conforme à la revendication 1, caractérisé en ce que l'étape d'activation est réitérée séquentiellement sur tous les sous-ensembles de moyens de détection (12a, 12b, 12c, 12d) de la table de cuisson (10).Detection method according to claim 1, characterized in that the activation step is repeated sequentially on all subsets of detection means (12a, 12b, 12c, 12d) of the hob (10). Procédé de détection conforme à l'une des revendications 1 ou 2, caractérisé en ce que lesdits sous-ensembles de moyens de détection (12a, 12b, 12c, 12d) correspondent à une partition de la totalité des moyens de détection de la table de cuisson (10).Detection method according to one of claims 1 or 2, characterized in that said subsets of detecting means (12a, 12b, 12c, 12d) correspond to a partition of all the detection means of the detection table. cooking (10). Procédé de détection conforme à l'une des revendications 1 à 3, caractérisé en ce que les moyens de chauffage (12) et les moyens de détection sont des inducteurs.Detection method according to one of claims 1 to 3, characterized in that the heating means (12) and the detection means are inductors. Table de cuisson comportant des moyens de chauffage répartis selon une trame bidimensionnelle sous un plan de cuisson (11), des moyens d'activation des sous-ensembles de moyens de détection de la présence d'un récipient associés respectivement aux moyens de chauffage (12a, 12b, 12c, 12d), les moyens de détection (12) de chaque sous-ensemble (12a, 12b, 12c, 12d) étant non adjacents, la table de cuisson étant caractérisée en ce qu'elle comporte un microprocesseur commandant la réitération séquentielle de l'activation desdits sous-ensembles de moyens de détection (12a, 12b, 12c, 12d) jusqu'à ce que l'intégralité des moyens de chauffage (12) recouverts au moins en partie par au moins un récipient (R1, R2, R3) posé sur le plan de travail (11) est identifiée.Cooking table comprising heating means distributed in a two-dimensional grid under a cooking surface (11), means for activating the subassemblies of means for detecting the presence of a container respectively associated with the heating means (12a). , 12b, 12c, 12d), the detection means (12) of each subassembly (12a, 12b, 12c, 12d) being non-adjacent, the hob being characterized in that it comprises a microprocessor controlling the reiteration sequential activation of said subsets of detection means (12a, 12b, 12c, 12d) until all of the heating means (12) covered at least in part by at least one container (R1, R2, R3) placed on the work plane (11) is identified. Table de cuisson (10) conforme à la revendication 5, caractérisé en ce que les moyens de chauffage (12) et les moyens de détection sont des inducteurs.Cooktop (10) according to claim 5, characterized in that the heating means (12) and the detecting means are inductors.
EP20110186089 2010-10-21 2011-10-21 Method for detecting containers arranged on a cooktop and cooktop Active EP2445305B1 (en)

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EP2914061A4 (en) * 2012-10-24 2015-10-28 Panasonic Ip Man Co Ltd Induction heating apparatus
WO2023099659A1 (en) * 2021-12-03 2023-06-08 BSH Hausgeräte GmbH Hob device, hob, and method for operating a hob device

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FR2863039A1 (en) 2003-11-27 2005-06-03 Brandt Ind Heating procedure for cooking vessel placed on cooker hob has series of inductors that detect presence of vessel and switch on appropriate number of heaters
EP2034799A1 (en) 2007-08-07 2009-03-11 BSH Bosch und Siemens Hausgeräte GmbH Hob with a sensor device and method for detecting cooking utensils on a hob

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FR2803039A1 (en) 1999-12-23 2001-06-29 Bosch Gmbh Robert METHOD AND DEVICE FOR DETECTING A CURVED SHIFT OF A VEHICLE
FR2863039A1 (en) 2003-11-27 2005-06-03 Brandt Ind Heating procedure for cooking vessel placed on cooker hob has series of inductors that detect presence of vessel and switch on appropriate number of heaters
EP2034799A1 (en) 2007-08-07 2009-03-11 BSH Bosch und Siemens Hausgeräte GmbH Hob with a sensor device and method for detecting cooking utensils on a hob

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Publication number Priority date Publication date Assignee Title
EP2914061A4 (en) * 2012-10-24 2015-10-28 Panasonic Ip Man Co Ltd Induction heating apparatus
WO2023099659A1 (en) * 2021-12-03 2023-06-08 BSH Hausgeräte GmbH Hob device, hob, and method for operating a hob device

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EP2445305B1 (en) 2015-03-18

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