EP3705782B1 - Procédé de fonctionnement d'une plaque de cuisson pourvue d'une pluralité de points de cuisson et plaque de cuisson - Google Patents

Procédé de fonctionnement d'une plaque de cuisson pourvue d'une pluralité de points de cuisson et plaque de cuisson Download PDF

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Publication number
EP3705782B1
EP3705782B1 EP20160410.5A EP20160410A EP3705782B1 EP 3705782 B1 EP3705782 B1 EP 3705782B1 EP 20160410 A EP20160410 A EP 20160410A EP 3705782 B1 EP3705782 B1 EP 3705782B1
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EP
European Patent Office
Prior art keywords
power
cooking
display
illuminated
hob
Prior art date
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Active
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EP20160410.5A
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German (de)
English (en)
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EP3705782A1 (fr
Inventor
Hartmut Friedrich
Joel Schuster
Michael Stober
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.)
EGO Elektro Geratebau GmbH
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EGO Elektro Geratebau GmbH
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Publication of EP3705782A1 publication Critical patent/EP3705782A1/fr
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C7/00—Stoves or ranges heated by electric energy
    • F24C7/08—Arrangement or mounting of control or safety devices
    • F24C7/082—Arrangement or mounting of control or safety devices on ranges, e.g. control panels, illumination
    • F24C7/083—Arrangement or mounting of control or safety devices on ranges, e.g. control panels, illumination on tops, hot plates
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
    • G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
    • G09F9/33—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements being semiconductor devices, e.g. diodes
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/02—Induction heating
    • H05B6/06—Control, e.g. of temperature, of power
    • H05B6/062—Control, e.g. of temperature, of power for cooking plates or the like
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/02—Induction heating
    • H05B6/10—Induction heating apparatus, other than furnaces, for specific applications
    • H05B6/12—Cooking devices
    • H05B6/1209—Cooking devices induction cooking plates or the like and devices to be used in combination with them
    • H05B6/1218—Cooking devices induction cooking plates or the like and devices to be used in combination with them with arrangements using lights for heating zone state indication
    • 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 with several cooking zones and to a correspondingly designed hob which is designed to carry out this method.
  • Methods for displaying the power of a hob are widely known in the state of the art, for example from EN 10 2004 044 355 A1 , the EN 10 2011 006 274 A1 as well as EN 10 2016 223 848 A1 This allows an operator to see, possibly in different ways, what power or power level a cooking zone is currently set to. This power display enables the operator to check whether the power or power level corresponds to the desired state.
  • a method for displaying the power on a hob with two cooking zones has a single display device on which the currently set power or power level can be shown.
  • This power display is designed as a single segment display with several illuminated segments arranged next to one another. Depending on the set power, for which two control elements are provided, a different number of segments of the segment display are illuminated. The number of illuminated segments is calculated. This takes into account the power that can be generated on the induction heating coils. Segments on the segment display can be illuminated for a power display, starting from the left for one cooking zone and starting from the right for the other cooking zone. In this way, the total power available for the hob can be distributed between the two cooking zones without the risk of exceeding the maximum available power limit.
  • a further method for operating a hob in which four cooking zones are provided, each with an associated display device.
  • the current power levels of the cooking zones can be displayed on the display devices during operation of the hob.
  • On a further display device Four partial displays can be provided on which the remaining power still available is shown.
  • the invention is based on the object of creating a method as mentioned above and a hob as mentioned above, with which problems of the prior art can be avoided and in particular it is possible to display further information to an operator.
  • the hob is designed for either the entire hob to have a maximum power consumption.
  • the maximum power consumption can only apply to a part of the hob that is connected to one phase of a power grid in the house, for example a left and a right half.
  • This maximum power consumption represents a power limit that depends, for example, on the power provided by a power supply through the power grid in the house. This is explained in more detail below.
  • This power limit as the maximum power consumption must be sufficient for the operation of the entire hob, even if, for example, several cooking zones are to be operated.
  • a corresponding procedure for an induction hob is known from the EP 2 100 478 A1 There, too, a power limit for several inductively operated cooking surfaces must be dealt with together.
  • this power limit exists for the hob, a maximum power corresponding to this power limit can be distributed across multiple cooking zones. Depending on the level of this power limit and the power consumption, in particular a maximum power consumption, of the individual cooking zones, some of them can be operated at their maximum individual power, for example even two of them. Any power remaining until the power limit is reached can then be distributed across the other cooking zones. How exactly this is done and which priority may be assigned or used is not important for the present invention. The issue here is how such available power can be displayed to an operator in order to make it easier for them to select a power or power level for a cooking zone that is possible given the power limit.
  • a display device is provided for each hotplate to show a currently set power, which can also be a power level, as a power display or which can be displayed there. This serves to inform an operator which power or power level is actually prevailing at a hotplate. This can also be used to decide whether the power or power level can possibly be increased. For this purpose, the set power is always shown for each hotplate on the associated power display. This can be done in a manner known per se. According to the invention, a separate display device is provided for each hotplate.
  • the maximum available and selectable power is always displayed for each cooking zone, whereby the aforementioned power limit of the hob is still complied with if this maximum available and selectable power were to be set for this cooking zone.
  • This information is displayed to the operator in addition to the aforementioned power display of the currently set power or power level.
  • the display is shown for this cooking zone as well as for each of the other cooking zones, in particular on the respective associated power display, which Power is still available until the maximum power limit is reached.
  • a check is carried out to see whether the maximum power still available for one or each of the other cooking zones until the power limit is reached has changed. This can preferably be checked on each cooking zone. During such a check, if, for example, on a cooking zone with a total of four cooking zones, one cooking zone is operated at high power and another cooking zone is operated at low power, while the other two cooking zones are not operated at all, it is clear that the maximum permissible power for this cooking zone would probably still be available for all cooking zones except for the cooking zone operated at high power. However, this does not work for each of these cooking zones, of course, but only for one of them.
  • the power display will then show that only about half of the maximum power is available. This means that the operator knows immediately and at a glance that more than half of the maximum permissible power for this cooking area is not available and therefore cannot be set.
  • a power display can be provided for each cooking zone, which can display two pieces of information at the same time. Firstly, this is the currently set power or power level, whereby in practice the power is preferably displayed as the power level. These power levels usually range from 0 to 9 with a single-digit power display, i.e. from no power to maximum power. With a two-digit power display, this can go even higher.
  • a display device can have at least one illuminated digit as a light display, in order to show the currently set power. It can also be two digits. Such a power display of the currently set power or power level has become widely accepted and is very good and very intuitive to understand.
  • the display device can have another digit or a pair of digits on the illuminated display in order to be able to show the maximum power still available until the power limit is reached. So that this digit display can then be distinguished from the other digit display for the currently set power, it is recommended, for example, that the digit display for the currently set power be set in a first, brighter mode.
  • the digit display for the maximum power still available can then be set in a second mode, or the digits can be illuminated in a second mode that is darker than the first mode.
  • the display can be smaller, i.e. reduced in size, or be a different color or flashing.
  • the display device also has a segment display with a number of illuminated segments. These are also referred to as bar graphs. These illuminated segments are arranged in a line, particularly advantageously as a straight line. It is advantageous to have between 1 and 20 segments, particularly advantageous between 7 and 10 segments.
  • the currently set Power can be displayed by a corresponding number of segments illuminated in a first mode.
  • the first mode as previously explained, is a bright mode.
  • the number of brightly illuminated segments in the first mode corresponds to the power level set for this cooking zone.
  • An aforementioned numeric display can also be provided here, preferably a single-digit numeric display that shows the same information again directly as a number.
  • the maximum power still available for this cooking zone until the power limit is reached can be displayed by illuminating the other segments in a second mode that show the maximum power still available until the power limit is reached, in addition to the segments illuminated in the first mode.
  • the segment display has nine segments corresponding to power levels 0 or 1 to 9, and power level 5 is set for this cooking zone, five segments, preferably starting from the left, light up brightly in the first mode.
  • the maximum available power is power level 7
  • two other segments that are connected to the brightly illuminated segments can be dimly illuminated in the second mode, as previously explained. This means that an operator can see that this cooking zone is currently being operated at power level 5 and could be operated at a maximum of power level 7.
  • the currently set power is also shown with the number 7 as an illuminated display, an operator can very quickly and instinctively see the currently set power and the maximum available power and also visually compare or relate them to one another. This makes the hob very advantageous and convenient to use.
  • the second mode is brighter than the first mode.
  • Various known signaling devices can be used to signal to an operator that a power level exceeding a certain limit cannot be set. These can be acoustic and/or optical, but signal tones or beeps are considered to be particularly practical.
  • segment display can be designed so that those segments, especially in each illuminated display, that are not illuminated in the first mode or the second mode are not illuminated at all. This allows maximum differentiation to be achieved for quick and instinctive operation.
  • operating elements are integrated into the display device, so that it can be viewed as a fully-fledged operating device.
  • the operating elements can basically be designed in any way for the invention. They are advantageously designed as touch switches or have touch sensors, particularly advantageously capacitive touch sensors or sensor elements. These can even be arranged under the aforementioned segment display, so that a finger can be placed on one of the segments for operation, and the touch sensor registers this and triggers the operating function.
  • the power limit depends only on the total maximum power available for the hob, i.e. the power limit, as explained at the beginning. Boundary conditions at the individual cooking points, for example an individual maximum adjustable power, are not important. In this respect, a power display of both the currently set power and the maximum available power is best done in the usual power levels, which, as is well known, do not have to be divided proportionally.
  • a display device is then provided for a hob that can display power, so to speak.
  • the aforementioned segment display is particularly advantageous here, as it can also offer the desired display function in isolation and is therefore more suitable than a numeric display alone.
  • a top view of a simplified hob 11 according to the invention is shown.
  • the hob 11 has a conventional hob plate 12 on which four cooking zones 14a to 14d are provided.
  • Each of the cooking zones 14a to 14d is formed by its own heating device, which can be radiant heating devices or induction heating devices.
  • the cooking zone 14c is very large and has significantly more power than the others, for example at least 50% more.
  • the cooking zone 14b is somewhat larger than the cooking zones 14a and 14d. It can have a diameter that is about 2 cm larger and 30% more power.
  • a connection cable 13 extends to the right of the hob, which can be symbolically plugged into a conventional socket and is intended to illustrate that a certain power limit is provided for the hob, which comes from the normal house connection.
  • the maximum power consumption of the hob 11 with a mains voltage of 230 V and a fuse of 16 A can be around 3.7 kW. If you subtract around 100 W as the power requirement for controlling the hob 11, 3.6 kW of heating power can be generated or is available on the hob 11.
  • the hob 11 could also be electrically connected to two phases of a three-phase connection in a household, in which case the maximum power consumption or the power limit is doubled. The maximum power consumption is then provided for each phase, as explained at the beginning.
  • the hob 11 therefore has a power limit of 3.6 kW. A higher power consumption for the cooking zones 14a to 14d must not allow the hob to be controlled here.
  • the hob 11 has an ON switch 16 and four display devices 17a to 17d. As can be seen from their arrangement, each of the display devices 17a to 17d is clearly and permanently assigned to exactly one cooking point 14a to 14d. The display device 17a is assigned to the cooking point 14a and so on.
  • a display device 17 is not only used for the pure display of information or as a power display, for which the numeric display 19 with the two digits 21a and 21b is primarily provided, which is designed here as a seven-segment display. Each digit 21a and 21b is therefore formed in the usual way by seven illuminated segments 22.
  • the display device 17 also has a segment display 25 below the numeric display 19 with nine segments 26a to 26i arranged in a straight line. These each have exactly the same width, but different heights or are designed like a trapezoid, so that they are slightly higher overall.
  • the segments 26a to 26i can also be made to light up individually or displayed illuminated, similar to the illuminated segments 22 of the numeric display 19.
  • a separate LED is provided for each segment 26a to 26i.
  • touch sensors 28 form an operating device, so to speak, or take over the operating function within the display device 17, so that the functions of the display or illuminated display as well as the operation can be achieved with the display device 17.
  • the operation of the segment display 25 as a slider using the touch sensors 28 also takes place as is known from the prior art. If a finger is placed on one of the segments 26a to 26i above a corresponding touch sensor 28, this is understood as an operation to set a power or power level from 1 to 9 corresponding to this segment 26.
  • FIG.3 is now shown how the four display devices 17a to 17d look when the power level 5 has been set for the left rear cooking zone 14a on the corresponding display device 17a.
  • the numerical display 19 of the display device 17a shows the power level 5 is displayed illuminated by means of the right-hand digit. This is advantageously done illuminated or brightly, as is illustrated by the corresponding dense hatching.
  • this power level 5 is shown on the segment display 25 by the first five segments 26a to 26e lighting up brightly. This is also shown by dense hatching. If only these five segments, starting from the left, were to light up, it would be a light display in accordance with the state of the art.
  • the power consumption of the cooking area 14a at power level 5 is such that it is still well below the aforementioned power limit, for example 1 kW.
  • the remaining four segments 26 also light up, but much more weakly or less, as is illustrated by the weak hatching.
  • the dense hatching of the left five segments 26 corresponds to a first bright mode, as explained at the beginning.
  • the weak hatching of the right four segments 26 corresponds to a weakly lit second mode.
  • the slightly larger cooking zone 14b at the back right could also be operated at full power or maximum power level 9, but is not currently activated.
  • the digital display 19 is therefore dark, but the nine segments 26 of the segment display 25 are dimly lit in the second mode, as shown by the weak hatching.
  • the front left cooking zone 14c which can be designed for a significantly higher output, for example around 3 kW at a maximum power level of 9. Since these 3 kW are obviously not available at the power limit of 3.6 kW and a power consumption of 1 kW for the cooking zone 14a, the weak lighting in the second mode is only shown for the first eight segments on the segment display 25 for the cooking zone 14c that is not in use.
  • the ninth segment on the far right is not illuminated at all to show the operator that the cooking zone 14c can only be operated up to a maximum power level of 8. This "8" is not displayed separately, however.
  • FIG.5 A further variation is shown based on the representation of the Fig.3 , where only a power level of 4 has been set for the cooking zone 14c on the touch sensors of the segment display.
  • the numeric display 19 therefore shows the number 4.
  • the first four segments 26 of the segment display 25 light up brightly, starting from the left, and are therefore densely hatched.
  • the cooking zone 14c could also be operated up to power level 8, which is why the next four segments are dimly illuminated in the second mode. Only the ninth segment is not illuminated at all because power level 9 is not available due to the maximum power limit.
  • the cooking zone 14a could also be operated up to power level 8. Therefore, four additional segments 25 are dimly illuminated in the second mode to indicate this power reserve.
  • the cooking zone 14b could be operated up to a maximum power level of 4, which is why the first four segments 26 starting on the left are dimly lit in the second mode. Since no power is set, the associated digital display 19 remains dark or unlit.
  • the cooking zone 14d on the front right is slightly smaller than the cooking zone 14b, but it is the same size as the cooking zone 14a and can be operated up to power level 5. This is why the first five segments 26 in the second mode, starting on the left, are dimly lit and correspondingly dimly shaded. This digital display also remains dark because no power is set.
  • Fig.6 is based on the state of the Fig.5 shown how a power level 2 has been set by means of the display device 17d for the cooking zone 14d from the right. Therefore, starting on the left, the first two segments 26 light up brightly in the first mode and are densely hatched. Due to this additional power consumption of the cooking zone 14d, the cooking zone 14a can only be operated up to a maximum of power level 7, which is why only two further light segments are dimly lit in the second mode to indicate a power reserve. In a similar way, the display device 17c also shows that only three further segments 26 are dimly lit in the second mode. The maximum power level that can be set here is therefore 7.
  • a power level of 2 is set, which is why the first two segments 26 starting on the left are brightly lit in the first mode. Since this cooking zone 14d is Fig.5 could be operated up to a maximum of power level 5, three further segments are now dimly illuminated in the second mode and shown correspondingly dimly hatched.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Cookers (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
  • Induction Heating Cooking Devices (AREA)

Claims (11)

  1. Procédé de fonctionnement d'une table de cuisson (11) avec plusieurs foyers (14), dans lequel :
    - pour l'ensemble de la table de cuisson (11) ou pour une partie de la table de cuisson (11) qui est raccordée à une phase d'un réseau électrique dans la maison, une puissance maximale absorbée est prévue comme limite de puissance,
    - une puissance maximale correspondant à cette limite de puissance peut être répartie entre plusieurs zones de cuisson,
    - un dispositif d'affichage (17) propre et séparé est prévu pour chaque foyer (14), sur lequel une puissance ou un niveau de puissance actuellement réglé(e) peut être affiché(e) comme indication de puissance,
    - pour chaque foyer, la puissance réglée est toujours affichée sur l'indicateur de puissance correspondant,
    caractérisé en ce que
    - pour chaque foyer (14), le dispositif d'affichage (17) prévu pour celle-ci affiche toujours la puissance maximale disponible et sélectionnable, dont le réglage pour cette foyer (14) respecte toujours la limite de puissance,
    - après le réglage d'une puissance possible pour un foyer (14), le dispositif d'affichage (17) prévu pour ce foyer et pour chacun des autres foyers indique quelle puissance maximale est encore disponible pour ce foyer (14) jusqu'à ce que la limite de puissance soit atteinte,
    - la limite de puissance dépend uniquement de la puissance maximale totale disponible pour la table de cuisson (11) ou pour la partie de la table de cuisson (11) qui est raccordée à une phase d'un réseau électrique domestique, et non pas des conditions marginales de l'une des foyers (14),
    - après chaque modification d'un réglage de puissance sur un quelconque foyer (14), on vérifie sur chaque foyer (14) si la puissance maximale encore disponible jusqu'à l'atteinte de la limite de puissance a changé pour chacun des autres foyers.
  2. Procédé selon la revendication 1, caractérisé en ce qu'à chaque modification d'un réglage de puissance sur un foyer (14), l'affichage lumineux de la puissance maximale encore disponible jusqu'à l'atteinte de la limite de puissance change pour chacun des autres foyers (14).
  3. Procédé selon l'une des revendications précédentes, caractérisé en ce qu'un dispositif d'affichage (17) comporte au moins un chiffre (21) affiché de manière lumineuse pour la puissance actuellement réglée, de préférence deux chiffres (21).
  4. Procédé selon la revendication 3, caractérisé en ce que le dispositif d'affichage comporte en outre un autre chiffre ou une autre paire de chiffres pour indiquer la puissance maximale encore disponible jusqu'à ce que la limite de puissance soit atteinte.
  5. Procédé selon la revendication 4, caractérisé en ce que les autres chiffres sont éclairés dans un deuxième mode, plus sombre qu'un premier mode, dans lequel les chiffres sont représentés pour l'affichage lumineux de la puissance actuellement réglée.
  6. Procédé selon l'une des revendications 1 à 3, caractérisé en ce que le dispositif d'affichage comprend en outre un affichage à segments (25) avec un nombre de segments affichables lumineux (26) compris entre 1 et 20, qui sont disposés en ligne, de préférence entre 7 et 10, la puissance actuellement réglée étant indiquée par un nombre correspondant de segments (26) éclairés dans un premier mode, notamment en fonction d'un niveau de puissance auquel correspond le chiffre (21) affiché, la puissance maximale encore disponible jusqu'à ce que la limite de puissance soit atteinte étant indiquée par le fait que les autres segments (26) correspondant à la puissance maximale encore disponible jusqu'à ce que la limite de puissance soit atteinte sont éclairés dans un deuxième mode.
  7. Procédé selon l'une des revendications 4 à 6, caractérisé en ce que, dans l'affichage lumineux, les chiffres (21) ou les segments (26) du premier mode sont éclairés plus clairement que les chiffres (21) ou les segments (26) du deuxième mode.
  8. Procédé selon l'une des revendications 3 à 7, caractérisé en ce que les segments (26) de chaque indicateur lumineux qui ne sont pas éclairés dans le premier mode et qui ne sont pas éclairés dans le deuxième mode ne sont pas éclairés du tout.
  9. Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce que la limite de puissance dépend d'une puissance fournie par une alimentation en puissance par un réseau électrique domestique.
  10. Table de cuisson (11) comprenant une commande, plusieurs foyers (14) et un dispositif d'affichage (17) propre et séparé pour chacun des foyers (14), les dispositifs d'affichage (17) étant conçus pour afficher une puissance ou un niveau de puissance réglé pour le foyer (14) associé sous la forme d'un indicateur de puissance, caractérisée en ce que la commande est conçue pour mettre en oeuvre le procédé selon l'une des revendications précédentes.
  11. Table de cuisson selon la revendication 10, caractérisée en ce que le dispositif d'affichage (17) présente en outre, pour chacun des foyers (14), un affichage à segments (25) avec un nombre de segments (26) pouvant être affichés de manière lumineuse compris entre 1 et 20, qui sont disposés en ligne, de préférence entre 7 et 10 segments (26).
EP20160410.5A 2019-03-06 2020-03-02 Procédé de fonctionnement d'une plaque de cuisson pourvue d'une pluralité de points de cuisson et plaque de cuisson Active EP3705782B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102019203064.5A DE102019203064A1 (de) 2019-03-06 2019-03-06 Verfahren zum Betrieb eines Kochfelds mit mehreren Kochstellen und Kochfeld

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EP3705782A1 EP3705782A1 (fr) 2020-09-09
EP3705782B1 true EP3705782B1 (fr) 2024-05-01

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KR (1) KR20200107826A (fr)
DE (1) DE102019203064A1 (fr)

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DE102016117695A1 (de) * 2016-09-20 2018-03-22 Miele & Cie. Kg Kochfeld

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