EP3945749B1 - Procédé de fonctionnement d'une plaque de cuisson et plaque de cuisson - Google Patents

Procédé de fonctionnement d'une plaque de cuisson et plaque de cuisson Download PDF

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Publication number
EP3945749B1
EP3945749B1 EP21181189.8A EP21181189A EP3945749B1 EP 3945749 B1 EP3945749 B1 EP 3945749B1 EP 21181189 A EP21181189 A EP 21181189A EP 3945749 B1 EP3945749 B1 EP 3945749B1
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EP
European Patent Office
Prior art keywords
heating
hob
cooking vessel
power density
heating power
Prior art date
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Active
Application number
EP21181189.8A
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German (de)
English (en)
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EP3945749A1 (fr
Inventor
Aylin Schöffler
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EGO Elektro Geratebau GmbH
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EGO Elektro Geratebau GmbH
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Publication of EP3945749A1 publication Critical patent/EP3945749A1/fr
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    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/02—Induction heating
    • H05B6/06—Control, e.g. of temperature, of power
    • H05B6/062—Control, e.g. of temperature, of power for cooking plates or the like
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • 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

Definitions

  • the invention relates to a method for operating a hob and a hob with heating elements and with a hob controller, the hob controller being designed to carry out this method.
  • a so-called chef's function is known in which location-dependent heat output densities are specified for a heating area on a hob plate of a hob with a plurality of heating elements underneath.
  • the heating line density can either decrease or increase in the direction from left to right or from front to back.
  • just by moving a cooking vessel on the heating area of the hob plate its heating or power level can be varied without having to determine and operate suitable control elements for this.
  • a hob with a hob plate has a plurality of heating elements which can have different heat output densities. If the displacement of a cooking vessel that has been set up is detected, a case distinction can then be made between heating with a high heating output and heating with a low heating output. If heating is carried out with a low heat output, the cooking vessel will continue to be heated with the same low heat output even after it has been moved to its new position. If the cooking vessel was previously heated with a high heat output, the heat output is reduced to a low heat output after it has been moved.
  • the invention is based on the object of creating a method as mentioned at the outset and a hob as mentioned at the outset, with which problems of the prior art can be solved and in particular it is possible to use a hob in connection with such a chef's function or in the chef's To be able to operate intuitively and comfortably.
  • the hob has a hob plate and at least three heating elements on or below the hob plate. These heating elements form a variable heating area or define it through their arrangement.
  • the heating elements can be arranged regularly, preferably in the manner of a matrix. You can be arranged relatively close together or have a small distance from each other, for example less than 5cm or less than 3cm.
  • the hob has a hob controller in order to control the heating elements, each with a heating power density.
  • a power supply can be provided for this in a known manner, either by means of switches such as relays or semiconductor switches, or by means of power electronics for controlling induction heating coils as heating elements.
  • a heat output density is specified for the heating elements by the cooktop control, with which they then heat a cooking vessel placed above it on the heating area.
  • the hob controller is designed to recognize a cooking vessel placed on the heating area. This can be achieved with a wide variety of means, for example with so-called pan detection sensors, which can be capacitive or inductive. If induction heating coils are used as heating elements, they can also be used in a known manner to detect a cooking vessel placed on the heating area or in the area of the heating elements. This is sufficiently known from the prior art and does not need to be explained further.
  • the hob controller can operate at least one heating element in the heating area in this way with a chef-chef function or in a chef-chef mode, in which case it is designed to heat the cooking vessel, depending on the position of the cooking vessel in the heating area, by at least to heat with a heating element.
  • Different heating power densities are used for this heating, with different positions of the cooking vessel in the heating area corresponding to different heating power densities of the heating elements for the cooking vessel. So this corresponds to a chef's business, as is known from the prior art, for example from the aforementioned EP 3 001 772 B1 . If an operator moves the cooking vessel or places the cooking vessel in a different position, this heat output density can change depending on the position.
  • the method has the following steps.
  • the cooking vessel is selected for a subsequent manual assignment of a heating power density by an operator.
  • This manual assignment of a heating power density can be done by actuating control elements on the hob and thus directly on the hob control. Alternatively, this can be done via an external hob control, which can be designed and work as a type of remote control, for example, can also be a mobile device such as a tablet computer or a smartphone.
  • a heating power density is manually assigned by an operator to the at least one heating element, over which the selected cooking vessel is placed and which is provided for its heating due to its position. As explained above, this is advantageously done by means of control elements or an operating device. The cooking vessel can then be heated with this manually assigned heating power density, just as the operator obviously intended.
  • the heating operation for the cooking vessel with the manually assigned heat output density can last as long as you like.
  • a heat output density for heating the cooking vessel can again be set by changing the position of the cooking vessel in the heating area, ie again depending on the position.
  • the mentioned option of manually assigning a heating power density for the cooking vessel can be advantageous if a heating power density is desired that is not possible in the chef's mode, in particular because it is too low or too high.
  • said minimum distance is at least 2 cm, preferably at least 4 cm.
  • a maximum value does not need to be specified since a maximum movement of the cooking vessel is specified, so to speak, by the limitation of the heating area.
  • the stated minimum distances from at least 2 cm or from at least 4 cm can usually be well resolved or recognized by an aforementioned pot recognition for a reliable function of the recognition of cooking vessels.
  • the heating elements are arranged next to one another along a direction from a left lateral side of the hob to a right lateral side of the hob. This is particularly useful in the case of rectangular hobs or essentially rectangular heating areas.
  • the heating elements can be connected to one another at an aforementioned distance from one another.
  • the positions for different heating power densities can vary in this direction, that is to say from left to right, or the cooking vessel can be moved along this direction in order to be heated differently.
  • the heat output density increases when the cooking vessel is moved from the left lateral side to the right lateral side. This means that the cooking vessel is heated more the further it is moved towards the right lateral side.
  • the heating power density does not vary steplessly in one direction or along the direction, but is graded, so to speak, or the heating area is divided into different areas in which different heating power densities are specified.
  • the heating area can be divided into at least two areas with different or increasing heat output densities. More areas are advantageously provided, in particular exactly three areas or exactly four areas.
  • a position of the cooking vessel is determined based on its center point or center of gravity of the base, i.e. depending on the area in which this is or is positioned, the associated heating power density is used to heat the cooking vessel. Whether exactly one heating element is used for this or several heating elements is irrelevant for the invention, it is a question of the heating power density that is used overall to heat the cooking vessel, ie in relation to its area.
  • the heating power density can only be changed by moving along a direction from left to right or vice versa, but not by moving the cooking vessel forwards or backwards. It can therefore be provided that the chef's business only runs along one direction from left to right, alternatively, along a front-to-back direction, allows the heating power density to be varied for heating the cooking vessel.
  • the heating power density varies along a direction of movement from one corner to the opposite corner, ie in both directions of movement. For the invention, this plays no role, its function is guaranteed regardless.
  • the aforementioned movement of the cooking vessel by more than a minimum distance must take place either parallel to the direction of change in the heating power density or completely independently of it.
  • a movement of the cooking vessel that is independent of this is preferred for deleting the manual assignment, since this is even easier for an operator.
  • an operating element that can be actuated manually is provided. By actuating it, the cooking vessel can be selected for a subsequent manual assignment of a heating power density.
  • This control element can be arranged on the hob itself, advantageously together with other control elements, alternatively on an aforementioned external control device.
  • a heating power density can be entered by an external operating device or on the hob itself as a manual assignment of a heating power density, with voice input being used for this purpose. This makes it even easier for the operator to operate the hob.
  • this manual assignment is then still deleted according to the invention by actually moving the cooking vessel by at least the aforementioned minimum distance.
  • a cooking vessel that is newly placed on the heating area is heated directly, beginning with a heating line density that corresponds to its position in the heating area. It is particularly advantageous here that an operator does not have to carry out any prior confirming input, but rather its heating takes place directly after the cooking vessel has been set up according to its position.
  • This heating power density can be varied by moving the cooking vessel in the heating area, as explained above.
  • a hob has at least three heating elements, preferably significantly more.
  • the number can be at least six heating elements, advantageously at least eight or at least twelve heating elements.
  • the manually assigned heating power density is immediately deleted after the cooking vessel has been detected to be moving by more than the aforementioned minimum distance.
  • a corresponding signaling can be output to an operator, advantageously optically and/or acoustically.
  • the manually assigned heating power density is restored, i.e. it is not necessary to select again separately from a large number of possible heating power densities. This has the advantage that if the cooking vessel is moved or repositioned in the heating area, for example due to a lack of space, i.e.
  • a specific maximum period of time can be provided for this restoration, which is a maximum of 10 seconds, advantageously a maximum of 5 seconds.
  • the expiry of this period of time and its end can be signaled to the operator, advantageously optically and/or acoustically.
  • FIG. 1 1 shows a cooktop 11 according to the invention, which has a cooktop plate 12, which forms a heating area 13 thereon with its substantial surface.
  • Three pots T1, T2 and T3 are placed on the heating area 13 as cooking vessels.
  • the hob 11 has an operating device 20 in the front middle area.
  • the operating device 20 has a power display 22, represented here by a one-digit seven-segment display. This could also have two digits, and a matrix display with considerably more display options could also be provided, in particular as a full display.
  • a multiplicity of illuminated operating elements 23 are provided, advantageously in the form of touch switches with an illumination function.
  • An elongated strip is provided underneath as a so-called slider 25 .
  • a numerical value can be set in a known manner, for example a power level for a pot T or a numerical value for a timer or the like Correspond heating area 13 and allow their touch function, for example, its selection for subsequent influencing.
  • Other controls with general functions can be provided, as can be easily imagined.
  • induction heating coils 15 are distributed under the hob plate 12 in the heating area 13 as the heating elements mentioned at the outset. They are all of the same size or of identical design and cover the heating area 13 almost without gaps, except for the area occupied by the operating device 20 .
  • the induction heating coils 15 can be controlled individually and their heating output or heating output density can be adjusted. They can be operated individually or together to heat one or more pots T placed above them.
  • the induction heating coils 15 can function as pot detection sensors and detect the presence of a pot placed wholly or partially above it. But it can also be provided additional pot detection sensors, for example according to EP 3079443 A1 . This can be recognized and processed by a cooktop controller, which is advantageously integrated in the operating device 20, for a pot detection function mentioned at the outset. This is essential for the chef's business.
  • the heating area 13 is divided into five strip-like power zones 17a to 17e by broken lines in the front-rear direction running parallel to the left and right lateral sides of the cooktop 11 .
  • the central power zone 17c is somewhat larger or wider and comprises almost two induction heating coils 15 across its width.
  • the other power zones comprise only one induction heating coil across its width.
  • the numerical values "4, 6, 7, 8, 9" given behind it make it clear that each of these power zones 17a to 17e is assigned a specific power level, with these power levels being subdivided as usual. Of course, all power levels from 0 to 9 can be set manually using the operating device 20, possibly also so-called boost power levels. These power levels correspond to specific heating power densities, as is known from the prior art.
  • Power zone 17 therefore has power level 4, power zone 17b has power level 6, power zone 17c has power level 7, power zone 17d has power level 8 and power zone 17e has power level 9. So if a pot T is predominantly in one of these power zones he heated with their power level or their heating power density. At the out 1 apparent distribution of the pots T1 to T3, which in 3 is shown again, pot T1 has power level 6 due to its position in power zone 17b. Power level 7 results for pot T2 in power zone 17c. Pot T3 has power level 7 due to its placement predominantly in power zone 17d power level 8. Overlapping to the right into power zone 17e doesn't change that.
  • the hob 11 with the pots T1 to T3 can be operated in chef mode or with an aforementioned chef function. If, for example, the pot T3 is moved to the far right into the power zone 17e, so that its main area lies in this power zone 17e, then it is heated with the power level 9 or a corresponding heating power density.
  • the induction heating coils 15 are each generally controlled with such a heating power density that for pots T with a recognized position and base area or installation area, a heating power results that corresponds to the power level corresponds to their performance zone. This is known from the prior art. If pot T1 were pulled to the right in front of pot T2, it would be in power zone 17c and would therefore be heated at power level 7, ie one power level higher than before.
  • an operator does not want to heat the pot T1 with the power level corresponding to the chef's mode, i.e. the power level 6 corresponding to the power zone 17b on which the pot T1 is standing, but simply heat it with a different power level should be able to.
  • the operator selects the pot T1 by actuating the operating element 23 of the operating device 20 that corresponds to its position. Alternatively, if a cooktop control can recognize this, the pot T1 can be touched as a selection, this is in 4 shown.
  • power level 3 for the selected pot T1 is manually selected on slider 25, this is in figure 5 shown.
  • This power level 3 is then shown by the power display 22 .
  • it is also shown again at the location of the pot T1.
  • pot T1 is heated with power level 3 and is therefore significantly less heated than would actually correspond to its position in power zone 17b corresponding to power level 6.
  • the pot T1 As long as the pot T1 is not moved or the operator changes the power level manually, it is heated with this power level 3. Furthermore, the power level can be changed again manually on the slider 25, for example reduced or also increased, in particular also well beyond the power level 6, which actually corresponds to its position in the power zone 17b. If the operator now wants to heat the pot T1 again in the chef's mode, and in particular wants to set a different power level, he can use the pot T1 accordingly 6 move. According to a first possibility, it moves the pot T1 to the left or towards the left lateral side of the hob 11, specifically by the distance d1. This distance d1 is significantly greater than the minimum distance D shown below for the sake of information, which is recognized by a pan recognition function of the cooktop control.
  • the minimum distance D can be 5 cm here, for example.
  • the manual setting or assignment of the power level is deleted and the power level 4 corresponding to the position of the pot T1 in the power zone 17a shown as a dotted line is set.
  • the power level 4 is therefore displayed on the power display 22, as is also shown again within the pot symbol of T1 for clarification. From this point on, the manual assignment of the power level is actually deleted and forgotten, so to speak.
  • the operating device 20 is optically or acoustically signaled to an operator that by actuating an operating element 23, for example according to the position of the pot T1 in the heating area 13, the previously manually assigned power level 3 is set again .
  • the pot T1 is moved by the distance d2 towards the back of the hob 11, which is also well above the minimum distance D, then the manual assignment of a power level is also deleted again.
  • the new power level corresponds to the dotted position of the pot T1 within one of the power zones, here within the power zone 17b. For this reason, the pot T1 is now heated directly with the power level 6 corresponding to this power zone 17b. The number 6 then appears on the power display 22.
  • the pot T1 is only moved a small distance to the right forwards into the position shown in dot-dash lines with the distance d3, which is well below the minimum distance D, then nothing happens.
  • the manual assignment of performance level 3 is retained. A corresponding notice may possibly be displayed on the operating device 20, but this does not have to be the case. With such a slight movement of the pot T1, it is assumed that this was not done with the motivation to delete the manual assignment of a power level or to adjust the power level in accordance with the chef's mode.
  • Lifting a pot momentarily and returning it to the same position is not considered a movement or change of position. After that, the position is the same.
  • the time for this can be between 5 seconds and 20 seconds. This can be done, for example, to refill the water in the pot or to remove the food to be cooked. Only when the pot is on placed on the hob 11 or the heating area 13 in a different position than before, in particular with more than the minimum distance D between the two, this is regarded as a change of position and as a deliberate moving of the pot with the same consequences as explained above. In particular, a power level specified by the chef's operation is changed or a manual assignment of a power level is canceled.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Electric Stoves And Ranges (AREA)
  • General Preparation And Processing Of Foods (AREA)
  • Cookers (AREA)

Claims (13)

  1. Procédé d'utilisation d'une table de cuisson (11), en particulier d'une table de cuisson à induction (11), comprenant :
    - une plaque de cuisson (12),
    - au moins trois éléments chauffants (15), les éléments chauffants (15) formant ou définissant une zone de chauffage variable (13) sur la plaque de cuisson (12),
    - une commande de table de cuisson pour commander les éléments chauffants (15) avec respectivement une densité de puissance de chauffage et pour reconnaître un récipient de cuisson (T) placé sur la zone de chauffage (13),
    dans au moins un état de fonctionnement, la commande de la table de cuisson fait fonctionner au moins un élément chauffant (15) dans un mode de cuisson de chef, dans lequel la commande de la table de cuisson est conçue à cet effet, chauffer le récipient de cuisson (T) en fonction d'une position du récipient de cuisson (T) dans la zone de chauffage (13) par l'intermédiaire d'au moins un élément chauffant (15), des positions différentes du récipient de cuisson (T) dans la zone de chauffage (13) correspondant à des densités de puissance de chauffage différentes pour le récipient de cuisson (T),
    caractérisé par les étapes suivantes :
    - le récipient de cuisson (T) est sélectionné pour une attribution manuelle ultérieure d'une densité de puissance de chauffage par un opérateur,
    - une densité de puissance de chauffage est attribuée manuellement par un opérateur à au moins un élément chauffant (15) pour le récipient de cuisson sélectionné (T),
    - en déplaçant le récipient de cuisson (T) de plus d'une distance minimale (D) à l'intérieur de la zone de chauffage (13), la densité de puissance de chauffage attribuée manuellement est effacée et remplacée par une densité de puissance de chauffage correspondant à la position du récipient de cuisson (T) dans la zone de chauffage (13) après le déplacement, pour la poursuite du chauffage du récipient de cuisson (T).
  2. Procédé selon la revendication 1, caractérisé en ce que la distance minimale (D) est de 2 cm, de préférence de 4 cm.
  3. Procédé selon la revendication 1 ou 2, caractérisé en ce que les éléments chauffants (15) sont disposés les uns à côté des autres le long d'une direction allant d'un côté latéral gauche de la table de cuisson (11) à un côté latéral droit de la table de cuisson (11), en particulier en étant adjacents les uns aux autres, et en ce que, dans cette direction, les positions varient pour différentes densités de puissance de chauffage.
  4. Procédé selon la revendication 3, caractérisé en ce que la densité de puissance de chauffage augmente dans la direction allant du côté latéral gauche vers le côté latéral droit.
  5. Procédé selon l'une des revendications précédentes, caractérisé en ce que la zone de chauffage (13) est divisée, dans la direction allant d'un côté latéral gauche de la table de cuisson (11) vers un côté latéral droit de la table de cuisson (11), en au moins deux zones (17a - 17e) ayant une densité de puissance de chauffage différente ou croissante, de préférence en exactement trois zones ou exactement quatre zones.
  6. Procédé selon l'une des revendications précédentes, caractérisé en ce que, lors du déplacement ou du changement de position du récipient de cuisson (T) dans la direction allant d'un côté avant de la table de cuisson (11) vers un côté arrière de la table de cuisson (11), il n'y a pas de modification de la densité de puissance de chauffage dans la direction allant d'un côté latéral vers le côté latéral opposé de la table de cuisson (11) sans composante de déplacement.
  7. Procédé selon l'une des revendications précédentes, caractérisé en ce qu'une sélection du récipient de cuisson (T) pour une attribution manuelle ultérieure d'une densité de puissance de chauffage est effectuée par l'opérateur en actionnant un élément de commande (23) pouvant être actionné manuellement ou est effectuée par un appareil de commande externe.
  8. Procédé selon l'une des revendications précédentes, caractérisé en ce que l'attribution manuelle d'une densité de puissance de chauffage est effectuée par l'opérateur sur un dispositif de commande (20) avec des éléments de commande (23) pouvant être actionnés manuellement.
  9. Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce que l'attribution manuelle d'une densité de puissance de chauffage est effectuée par l'entrée d'un appareil de commande externe, de préférence par entrée vocale.
  10. Procédé selon l'une des revendications précédentes, caractérisé en ce qu'un récipient de cuisson (T) nouvellement placé sur la zone de chauffage (13) est chauffé en commençant directement avec une densité de chauffage qui correspond à sa position dans la zone de chauffage (13), de préférence sans saisie préalable par un opérateur.
  11. Table de cuisson (11) avec au moins trois éléments chauffants (15) et avec une commande de table de cuisson, la commande de table de cuisson étant conçue pour réaliser le procédé selon l'une des revendications précédentes.
  12. Table de cuisson selon la revendication 11, caractérisée en ce qu'au moins deux éléments chauffants (15) sont prévus l'un derrière l'autre dans une direction allant d'une face avant de la table de cuisson (11) vers une face arrière de la table de cuisson (11), la table de cuisson (11) présentant en particulier au total au moins quatre éléments chauffants (15) disposés de manière régulière, de préférence au moins douze éléments chauffants (15).
  13. Table de cuisson selon la revendication 12, caractérisée en ce que les éléments chauffants (15) sont disposés de manière matricielle.
EP21181189.8A 2020-07-30 2021-06-23 Procédé de fonctionnement d'une plaque de cuisson et plaque de cuisson Active EP3945749B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102020209648.1A DE102020209648A1 (de) 2020-07-30 2020-07-30 Verfahren zum Betrieb eines Kochfelds und Kochfeld

Publications (2)

Publication Number Publication Date
EP3945749A1 EP3945749A1 (fr) 2022-02-02
EP3945749B1 true EP3945749B1 (fr) 2023-04-19

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EP21181189.8A Active EP3945749B1 (fr) 2020-07-30 2021-06-23 Procédé de fonctionnement d'une plaque de cuisson et plaque de cuisson

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DE (1) DE102020209648A1 (fr)
ES (1) ES2950368T3 (fr)

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2872258B1 (fr) 2004-06-25 2006-11-10 Brandt Ind Sas Table de cuisson a plusieurs zones de cuisson
ES2331037B1 (es) * 2007-10-25 2010-09-21 Bsh Electrodomesticos España, S.A. Campo de coccion y procedimiento para el accionamiento de un campo de coccion.
EP2709424B1 (fr) * 2012-09-17 2015-09-02 Electrolux Professional S.p.A. Plaque de cuisson à induction améliorée
ES2564849B1 (es) 2014-09-24 2017-01-12 BSH Electrodomésticos España S.A. Dispositivo de campo de cocción
PL3079443T3 (pl) 2015-04-10 2018-04-30 E.G.O. Elektro-Gerätebau GmbH Indukcyjna płyta grzejna i elastyczny nośnik dla indukcyjnej płyty grzejnej
DE102016217783A1 (de) 2016-09-16 2018-03-22 E.G.O. Elektro-Gerätebau GmbH Verfahren zum Betrieb eines Kochfeldes mit mehreren Heizeinrichtungen
DE102018213655A1 (de) * 2018-08-14 2020-02-20 E.G.O. Elektro-Gerätebau GmbH Verfahren zur Ansteuerung einer Heizeinrichtung eines Kochfelds und Kochfeld

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ES2950368T3 (es) 2023-10-09
DE102020209648A1 (de) 2022-02-03

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