EP3026981B1 - Plaque de cuisson à induction et procédé de commande d'une plaque de cuisson à induction - Google Patents

Plaque de cuisson à induction et procédé de commande d'une plaque de cuisson à induction Download PDF

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Publication number
EP3026981B1
EP3026981B1 EP15193655.6A EP15193655A EP3026981B1 EP 3026981 B1 EP3026981 B1 EP 3026981B1 EP 15193655 A EP15193655 A EP 15193655A EP 3026981 B1 EP3026981 B1 EP 3026981B1
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EP
European Patent Office
Prior art keywords
induction heating
coils
sensor
induction
coil
Prior art date
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Active
Application number
EP15193655.6A
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German (de)
English (en)
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EP3026981A1 (fr
Inventor
Timo Dalaker
Michael Eberle
Christian Egenter
Hartmut Friedrich
Thorsten Grunow
Stephane Lomp
Wolfgang Mohr
Michael Rupp
Michael Stöffler
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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Priority to PL15193655T priority Critical patent/PL3026981T3/pl
Publication of EP3026981A1 publication Critical patent/EP3026981A1/fr
Application granted granted Critical
Publication of EP3026981B1 publication Critical patent/EP3026981B1/fr
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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
    • H05B6/36—Coil arrangements
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/02—Induction heating
    • H05B6/06—Control, e.g. of temperature, of power
    • H05B6/062—Control, e.g. of temperature, of power for cooking plates or the like
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/02—Induction heating
    • H05B6/06—Control, e.g. of temperature, of power
    • H05B6/062—Control, e.g. of temperature, of power for cooking plates or the like
    • H05B6/065—Control, e.g. of temperature, of power for cooking plates or the like using coordinated control of multiple induction coils
    • 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
    • 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
    • H05B2213/07—Heating plates with temperature control means

Definitions

  • the invention relates to an induction hob and a method for controlling such an induction hob.
  • induction hobs With induction hobs, it is technically possible with an induction heating coil per se to determine the presence of a pot above the induction heating coil or on a cooking point defined by the induction heating coil, as long as the pot itself is suitable for inductive heating.
  • induction hobs for example, according to the EP 2670211 A2 , but it should now be possible through a variety of distributed induction heating coils, not only always cook with exactly one pot on exactly one hob with exactly one induction heating coil.
  • a plurality of significantly smaller induction heating coils is provided, of which, for example, five or seven together with sufficient coverage of a pot together for this pot quasi form a cooking point and heat the pot.
  • an induction hob is known with a plurality of round induction heating coils arranged under a cooktop panel. These induction heating coils can simultaneously perform a function as sensor elements.
  • the induction heating coils are all identical and identical.
  • induction hob is known with a plurality of induction heating coils arranged in a uniform grid.
  • the induction heating coils are all identical or identical with different shapes. They can be round, square or hexagonal.
  • the invention has for its object to provide an induction induction hob mentioned above and a process suitable for its control, which can be solved with the problems of the prior art and it is particularly possible, with not too much effort a Aufsetzort a pot on the induction hob recognize and to use for controlling the induction hob or the induction heating coils.
  • the induction hob has a hob plate and a plurality of induction heating coils, which are arranged below the hob plate. Furthermore, several sensor coils are arranged under the hob plate. These sensor coils work advantageously inductively to discover the presence of a pot over itself.
  • the induction heating coils are rectangular or approximately rectangular.
  • they are slightly elongated, where they are particularly advantageous 10% to a maximum of 50% longer than wide.
  • the approximate rectangular shape comes from the fact that the coil windings can not extend to the very corners or should not be bent. A radius at the corners can therefore be between 1 cm and 3 cm, in some cases even 5 cm. Nevertheless, the shape is substantially rectangular or is considered accordingly.
  • a basically similar rectangular induction heating coil is from the DE 20 2006 016 551 U1 known.
  • At least two induction heating coils are arranged one behind the other and at least three induction heating coils are arranged side by side. This means that at least six induction heating coils are provided on the induction hob, preferably eight or ten.
  • two adjacent induction heating coils form a neighboring area with one another, wherein these two induction heating coils then lie with their adjacent sides in this neighboring area.
  • two adjacent induction heating coils have a certain distance from each other, ie a distance between their outermost and their side defining coil turns. This distance between each other can be between 1 cm and 3 cm.
  • the sensor coil is advantageously also slightly wider than a neighboring area.
  • exactly one single sensor coil is provided in a distance direction from one induction heating coil to the adjacent induction heating coil.
  • two sensor coils may be provided in the region between two adjacent induction heating coils. These two sensor coils can then be provided next to one another, advantageously with the same orientation to the two adjacent induction heating coils.
  • the individual sensor coils can thus be used to detect the presence of a pot over itself with a relatively fine covering and thus to enable determination in the overall evaluation of all induction heating coils and of all sensor coils. where each pot is placed and how big this is. Because only a single sensor coil is provided in the direction of spacing between two adjacent induction heating coils, but possibly several in the transverse direction to this spacing direction, it can also be achieved that the induction heating coils lie relatively close to one another. So they can form a common cooking place for a common operation for heating a large pot without large gaps between the induction heating coils.
  • the sensor coils in the spacing direction are arranged so to speak symmetrically or uniformly between the induction heating coils.
  • a center point of a sensor coil is particularly advantageous not only in the neighboring area of two adjacent induction heating coils, but also between the adjacent sides of the induction heating coils, preferably exactly in the middle between these two adjacent sides.
  • sensor coils are arranged, but sensor coils are also arranged so that they run largely or completely over an induction heating coil.
  • these sensor coils are preferably above a central area or a central area of an induction heating coil arranged.
  • the pot placed over the induction heating coil is a rather large pot, which is then, with even greater probability, also covering one of the adjacent induction heating coils. Then it must be determined whether one of these induction heating coils should also go into heating mode.
  • the induction heating coils can be designed differently, in particular of different sizes.
  • all induction heating coils are the same size and / or even identical. This simplifies and reduces production costs.
  • a surface induction hob can be easily equipped with a number of induction heating coils.
  • all induction heating coils of an induction hob have the same winding direction. Thus, in principle, their mounting orientation is always the same.
  • the sensor coils are regularly and / or uniformly distributed, in particular with regard to their respective aforementioned orientation to a middle region or central region of induction heating coils and / or in neighboring regions between two adjacent induction heating coils.
  • the centers of the sensor coils are advantageously located between two induction heating coils.
  • the sensor coils are arranged on the short sides of the induction heating coils approximately centrally aligned with the short sides.
  • the one sensor coil arranged there or the plurality of sensor coils arranged there are displaced toward a central region of the induction hob or away from an outer region or outer edge of the induction hob, for example by 5% to 25% of their actual symmetrical or uniform arrangement.
  • This takes into account that coverage of an induction heating coil in the outer area or near the outer edge of the induction hob is rarer and, if it occurs, is achieved by a pot, so that detection even further to the outer area is actually not necessary.
  • An operator will hardly arrange a pot partly outwardly projecting beyond the outer area of the induction hob and partially overlapping an induction heating coil from the edge and want this pot to be heated.
  • the induction heating coil Only when this takes place so far that a significant portion of the induction heating coil is covered, for example, from 30% to 50%, and possibly also a sensor coil arranged in a middle region of this induction heating coil should the heating operation take place. Due to the displacement of the sensor coils away from the edge region or towards a central region of the induction hob, the density of the sensor coils and thus the recognition accuracy can be improved there while the number of components remains the same.
  • the sensor coils have a round shape, in particular a circular shape. This is mainly due to the fact that their geometric shape, unlike the induction heating, no essential importance and this round shape allows easy production.
  • a sensor coil may have 10 to 40 turns. Their diameter can be between 1 cm or 2 cm and 5 cm.
  • the sensor coils run at least partially above the induction heating coils and are arranged above it, in particular they thus run in a higher plane.
  • the sensor coils may be placed on the induction heating coils, but need not.
  • they are fixed independently of the induction heating coils or not fixed by placing them on the induction heating coils, but on a further carrier device.
  • This further support means is, for example, a flat carrier plate or carrier film which may be attached to the underside of the hob plate or simply be placed on the other induction hob or its Indutechnischmiesutzspulen that form the uppermost region or the top of the substructure of the induction cooktop.
  • a mechanical attachment to such a support means and an electrical contact can be made via this.
  • the sensor coils arranged centrally or centrally above an induction heating coil can essentially run in a region in which the induction heating coil has no coil turns in its center.
  • the arranged in the neighborhood areas sensor coils overlap the induction heating coils or their edge regions advantageously evenly and similarly. This is mainly because the sensor coils for a good function will preferably be wider than the width of a gap or intermediate region between adjacent induction heating coils.
  • the induction heating coils can have a single layer of turns or their turns can run in a single layer and thus a single plane. This is advantageous parallel to the hob plate and also parallel to a layer or plane in which the sensor coils run.
  • the sensor coils can be wound in one layer or their turns can run in a single layer or a single and advantageously common plane.
  • the sensor coils are advantageously identical to each other formed to reduce component costs.
  • all windings in a sensor coil have approximately the same diameter with deviations from 1 to 5 times a wire thickness. In this case, the windings form a quasi bundle with the smallest possible extent in the vertical direction and also in the diameter of the sensor coil. A disadvantage would be the geometrical extent of the bundle; the higher inductance would be advantageous for a smaller number of turns.
  • a sensor coil or all sensor coils can have or carry a temperature sensor, for example in their middle region or on a center.
  • Sensor coil and temperature sensor can form a unit, advantageously with a single electrical connection, so that they can be easily installed and connected.
  • the temperature sensor is particularly advantageous a temperature-dependent resistor, such as a PT1000.
  • the temperature sensor can be used together with the sensor coil to reliably detect the setting up of a pot above it, for example if no temperature increase takes place despite heating operation of the induction heating coil. Additionally or alternatively, it may be used for normal functions of a temperature sensor such as a hot display.
  • the sensor coils are always operated or should detect whether a pot is placed on the cooktop panel above them.
  • This continuous operation should mean here that the sensor coils are not operated every second or permanently, but for example in the interval mode or every few seconds, for example every 0.5 seconds to 30 seconds.
  • the operation of an induction heating coil for heating a raised pot should not mean that then the sensor coils no longer have to work. It can be provided that for the sake of simplicity, advantageously in an interval operation, all the sensor coils are operated continuously, that is, for example, capture all the aforementioned 0.5 second to 30 seconds or try to detect whether a pot is placed above them.
  • a sensor coil If a sensor coil is impaired in its function by an induction heating coil operated directly below or adjacent thereto, this does not interfere since it is then possible to start from an attached pot or a pot placed sufficiently on the induction heating coil. Otherwise, the induction heating coil would, due to their own operating conditions, especially in insufficiently placed pot or insufficient coverage, set the heating mode.
  • the resonant frequency of the sensor coils and their evaluation circuit is well above the operating frequency of the induction coil, preferably 5 times to 30 times higher. In this way, they can each work better and do not bother themselves.
  • an induction coil is only put into operation for heating a pot, provided that at least one of the sensor coils is covered by a pot. Then the presence of a pot is ensured.
  • an induction hob 11 according to the invention is shown in plan view, but with removed or without hob plate, so to speak, a substructure 12.
  • This substructure 12 can, as shown here, be connected as usual with a cooktop.
  • the substructure 12 has a support plate 13, which with supports or the like. then just connected to the hob plate.
  • induction heating coils 15a to 15h are arranged on the support plate 13 .
  • the Indu Vietnamese induction heating coils 15 are all identical and aligned identically, as can be detected at least in its central region at the discharge of a respective coil winding 19 a to 19 h down to the electrical connection.
  • the induction heating coils 15 each have long sides 16a to 16h and short sides 17a to 17h. At the corners they are slightly rounded because of the better guidance of the outer coil turns 19, since they should not be bent. Nevertheless, induction heating coils with this shape are to be regarded below as rectangular or at least approximately rectangular, as explained in the introduction.
  • the induction heating coils 15a to 15h each have a certain distance to their adjacent coils, which in practice may be 1 cm to 3 cm or even 5 cm, with rather smaller spacings being preferred.
  • neighboring areas 23 are formed, namely adjacent areas between long sides 16 of the induction heating coils, namely the neighboring areas 23ab, 23bc, 23cd, 23ef, 23fg and 23gh. These neighboring areas 23 are all the same width and the same length.
  • the induction heating coils 15 at their mutually facing or adjacent short sides 17 further neighboring areas, namely the neighboring areas 23ae, 23bf, 23cg and 23dh. These four neighboring areas are each the same length and the same width. They are slightly wider in the embodiment shown here than the long neighboring areas, but this does not play a major role.
  • sensor coils 25 are arranged in the neighboring areas 23 . These sensor coils 25 are formed as described above, so flat, single-wind or single-layer coils in a round shape with 10 turns to 30 turns. In each of the long neighboring areas, two such sensor coils 25 are arranged, namely the sensor coils 25ab, 25ab ', 25bc, 25bc', 25cd and 25cd 'in the upper three long neighboring areas 23ab, 23bc and 23cd. In the three lower long neighboring areas 23ef, 23fg and 23gh, it is the sensor coils 25ef, 25ef ', 25fg, 25fg', 25gh and 25gh '.
  • the upper sensor coil 25ab is located further from the upper short sides 17a and 17b of the induction heating coils 15a and 15b than the lower sensor coil 25ab 'from the lower short sides 17a' and 17b '.
  • This difference can be a few cm, but it is clear.
  • the displacement may be a few cm, for example 1 cm to 5 cm.
  • sensor coils 25 are arranged in the short neighboring areas 23ae, 23bf, 23cg and 23dh. These are also arranged exactly along a central longitudinal axis of the short neighboring areas, so overlap the respective upper and the respective lower induction heating coil 15 evenly, for example, also with one to three coil turns. These sensor coils 25 also have a small offset from the centric arrangement to the induction heating coils, so the sensor coils 25ae and 25cg are slightly displaced to the left from the center of the short sides 17 of the respectively adjacent induction heating coils 15. This displacement can be done by about 1 cm. By contrast, the sensor coils 25bf and 25dh are shifted to the right by the same amount. Again, this has proven to be advantageous in the context of the invention for the detection of erected pots.
  • 15 sensor coils are arranged in central areas of the induction heating coils, namely the sensor coils 25a, 25b, 25c, 25d, 25e, 25f, 25g and 25h. These are centered with respect to the long sides 16 of the induction heating coils, but shifted a short distance to the left or to the right from the center of the short sides 17 in the short neighboring areas 23 corresponding to the sensor coils 25ae, 25bf, 25cg and 25dh.
  • All sensor coils 25 are connected to a control of the induction hob 11, not shown here. A method for their control will be explained below. In their middle, they each carry a previously mentioned temperature sensor, indicated by the central small circle, which is advantageously a PT1000. The temperature sensors may be connected to the aforementioned controller.
  • the induction hob 11 has an operating area 27 with indicators and controls for adjusting the power of cooking zones, which are formed in different ways by one or more induction heating coils 15.
  • a very large pot 29a is placed, in the front middle area a medium sized pot 29b and right above a small pot 29c.
  • the pot 29a covers large portions of the induction heating coils 15a and 15b and small portions of the lower induction heating coils 15e and 15f. Furthermore, the sensor coils 25ab, 25ab ', 25ef, 25ae and 25bf as well as 25a and 25b are completely covered. This means that these sensor coils primarily recognize the presence of a raised pot above them. However, they do not realize that this is a single quasi-related and common with the same heat to be heated pot. Therefore, the overlay information of the induction heating coils 15 is still used.
  • the pot 29a should be pushed a little more over the two upper induction heating coils 15a and 15b so that it is heated more uniformly. But this is an optional extra feature. Also can be drawn by further evaluation of the sensor signal conclusions on the pot material.
  • the controller may also recognize that this pot 29b partially projects beyond the induction heating coil 15e.
  • the controller can recognize that the induction heating coil 15f is just as far covered by the pot 29a as the induction coil 15e due to the size and the arrangement of the pot 29a, it can recognize that the overall somewhat higher coverage of the induction heating coil 15f is additionally enhanced by a Part of the further pot 29b comes, but in turn this proportion is too low to justify heating by the induction heating coil 15f. Therefore, the pot 29b is heated only with the induction heating coil 15g.
  • the overall degree of coverage of the induction heating coil 15f taken alone, could be sufficient to start a heating operation for a presumably placed pot.
  • the induction heating coil 15d detects an overlap of about 30% to 40%. At the same time, the sensor coils 25d, 25cd 'and 25dh recognize a partial overlap. However, the induction heating coils 15c and 15h have no overlap. Thus, it can be seen that a pot is placed only above the induction heating coil 15d, and also its approximate size can be seen. Since even such small pots are to be heated inductively with the induction hob 11, the induction heating coil 15d just starts the heating operation for the pot 29c with a power level inputted to the operating section 27.
  • the large pot 29a top left is given the Fig. 2 to recognize that the overlap information of the induction heating coils 15 on the one hand and the affected sensor coils 25 on the other hand necessarily the presence of a single pot, and also about this size mean. If the pot 29a were even larger at the same center, it would very quickly cover the sensor coil 25bc 'and thus cause a signal at it. If it were even larger, but shifted slightly to the left, so to speak, so that its degree of coverage of the induction heating coils 15a and 15b would be greater, this would still mean the same heating mode, namely just by means of the induction heating coils 15a and 15b, which together then a cooking place for make this pot.
  • pot 29a were not circular, but oblong in the manner of a brewer, it could only be larger without covering additional sensor coils 25 in the downward direction, that is, more strongly via induction heating coils 15e and 15f. But then their degree of coverage would increase or one of the sensor coils 25e, 25f or 25ef 'would detect the presence of a pot over itself. If a certain overlap of the induction heating coils is achieved, or at the latest when overlapping one of the said sensor coils, then an additional operation of the induction heating coils 15e and 15f would also be justified.
  • the overlap of the sensor coil 25ef with such a small overlap of the induction heating coils 15e and 15f and the sensor coils 25ae and 25bf means that the sensor coil 25ef is covered by the same pot.
  • the sensor coils 25ae and 25bf could not be covered, except once again by very small pots.
  • all covering information of all Indutechnischswespulen 15 and all sensor coils 25 is always evaluated, and by recognizing the pot 29b can also explain the additional, caused by this pot coverage of Indutechnischswespule 15f.
  • the covering by the two pots 29a and 29b can not be done by a single large pot. Otherwise, the coverage of the induction heating coil 15f would be greater, furthermore, the induction heating coil 15c would have to be at least have a low degree of coverage and especially the sensor coils 25 bc 'and 25 f, which are not covered. The same applies to the sensor coil 25cg.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Induction Heating Cooking Devices (AREA)
  • General Induction Heating (AREA)

Claims (14)

  1. Plaque de cuisson à induction (11) comportant
    - une plaque de cuisson,
    - plusieurs bobines de chauffage à induction (15) disposées sous la plaque de cuisson, et
    - plusieurs bobines de détection (25) disposées sous la plaque de cuisson,
    dans lequel
    - au moins deux bobines de chauffage à induction (15) sont disposées l'une derrière l'autre et au moins trois bobines de chauffage à induction sont disposées côte à côte,
    - deux bobines de chauffage à induction (15) adjacentes forment l'une avec l'autre une zone adjacente, dans laquelle les deux bobines de chauffage à induction se situent dans la zone adjacente par leurs côtés adjacents (16, 17),
    - dans chaque zone adjacente, il est prévu au moins une bobine de détection (25),
    - il est prévu exactement une bobine de détection (25) dans une direction d'espacement de ladite bobine de chauffage à induction (15) par rapport à la bobine de chauffage à induction adjacente,
    caractérisée en ce que
    - les bobines de chauffage à induction (15) sont réalisées sous forme rectangulaire ou pratiquement rectangulaire,
    - les bobines de détection (25) s'étendent et sont disposées au moins partiellement au-dessus des bobines de chauffage à induction (15),
    - les bobines de détection (25) se superposent en proportions égales uniformément et de la même manière aux bobines de chauffage à induction (15).
  2. Plaque de cuisson à induction selon la revendication 1, caractérisée en ce qu'il est prévu dans au moins une zone adjacente au moins deux bobines de détection (25) disposées côte à côte le long des côtés adjacents (16) des bobines de chauffage à induction (15).
  3. Plaque de cuisson à induction selon la revendication 1 ou 2, caractérisée en ce qu'un point central d'une bobine de détection (25) se situe entre les côtés adjacents (16, 17) des bobines de chauffage à induction (15).
  4. Plaque de cuisson à induction selon la revendication 1, caractérisée en ce qu'une bobine de détection (25) est disposée sur une zone médiane ou une zone centrale d'une bobine de chauffage à induction (15), de préférence de chaque bobine de chauffage à induction.
  5. Plaque de cuisson à induction selon l'une quelconque des revendications précédentes, caractérisée en ce que la totalité des bobines de chauffage à induction (15) ont la même taille et/ou sont réalisées de manière identique, dans laquelle la totalité des bobines de chauffage à induction présentent de préférence le même sens d'enroulement.
  6. Plaque de cuisson à induction selon l'une quelconque des revendications précédentes, caractérisée en ce qu'exactement une bobine de détection unique (25) est disposée dans des zones adjacentes au niveau de deux bobines de chauffage à induction (15) qui sont disposées de manière à ce que leurs côtés courts (17) soient disposés de manière adjacente les uns aux autres, dans lequel il est prévu exactement deux bobines de détection (25), de préférence dans des zones adjacentes, entre deux bobines de chauffage à induction (15) qui sont disposées de manière adjacente l'une à l'autre par leurs côtés longs (16).
  7. Plaque de cuisson à induction selon l'une quelconque des revendications précédentes, caractérisée en ce que les bobines de détection (25) sont réparties le long des côtés longs (16) de manière non régulière ou non symétrique, mais en étant décalées vers une zone centrale de la plaque de cuisson à induction (11) ou de manière éloignée du bord.
  8. Plaque de cuisson à induction selon l'une quelconque des revendications précédentes, caractérisée en ce que, dans les zones adjacentes situées entre deux bobines de chauffage à induction (15) adjacentes dans lesquelles il n'est prévu qu'une seule bobine de détection (25), lesdites bobines de détection sont disposées au centre par rapport aux côtés longs (17) de la bobine de chauffage à induction, qui s'étendent dans les zones adjacentes.
  9. Plaque de cuisson à induction selon l'une quelconque des revendications précédentes, caractérisée en ce que les bobines de détection (25) présentent une forme arrondie, notamment une forme circulaire, dans laquelle celles-ci présentent de préférence de dix à quarante enroulements.
  10. Plaque de cuisson à induction selon l'une quelconque des revendications précédentes, caractérisée en ce que les bobines de chauffage à induction (15) et/ou les bobines de détection (25) présentent une couche d'enroulements unique ou en ce que les enroulements s'étendent dans une couche ou un plan unique.
  11. Plaque de cuisson à induction selon l'une quelconque des revendications précédentes, caractérisée en ce que les bobines de détection (25) présentent ou portent un capteur de température, de préférence dans leur zone centrale, dans laquelle le capteur de température est notamment une résistance dépendant de la température.
  12. Procédé de commande d'une plaque de cuisson à induction (11) selon l'une quelconque des revendications précédentes, caractérisé en ce que les bobines de détection (25) sont mises en fonctionnement en permanence ou détectent si une casserole (29) est placée au-dessus de celles-ci sur la plaque de cuisson.
  13. Procédé selon la revendication 12, caractérisé en ce que la fréquence de résonance des bobines de détection (25) ainsi que de leur circuit d'évaluation est sensiblement plus élevée, de préférence 5 à 30 fois plus élevée que la fréquence de fonctionnement des bobines d'induction (15).
  14. Procédé selon la revendication 12 ou 13, caractérisé en ce qu'une bobine d'induction (15) n'est mise en fonctionnement que si au moins l'une des bobines de détection (25) est recouverte par une casserole (29).
EP15193655.6A 2014-11-25 2015-11-09 Plaque de cuisson à induction et procédé de commande d'une plaque de cuisson à induction Active EP3026981B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL15193655T PL3026981T3 (pl) 2014-11-25 2015-11-09 Indukcyjna płyta grzejna i sposób sterowania indukcyjną płytą grzejną

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102014224051.4A DE102014224051A1 (de) 2014-11-25 2014-11-25 Induktionskochfeld und Verfahren zur Steuerung eines Induktionskochfelds

Publications (2)

Publication Number Publication Date
EP3026981A1 EP3026981A1 (fr) 2016-06-01
EP3026981B1 true EP3026981B1 (fr) 2017-08-09

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EP15193655.6A Active EP3026981B1 (fr) 2014-11-25 2015-11-09 Plaque de cuisson à induction et procédé de commande d'une plaque de cuisson à induction

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US (1) US10433375B2 (fr)
EP (1) EP3026981B1 (fr)
DE (1) DE102014224051A1 (fr)
ES (1) ES2644947T3 (fr)
PL (1) PL3026981T3 (fr)

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DE102017212216A1 (de) 2017-07-17 2019-01-17 E.G.O. Elektro-Gerätebau GmbH Verfahren zum Betrieb eines Kochfeldes
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DE102018203607A1 (de) 2018-03-09 2019-09-12 E.G.O. Elektro-Gerätebau GmbH Verfahren zur Darstellung einer Anzeige an einem Kochfeld und Kochfeld
CN110557856A (zh) * 2018-05-31 2019-12-10 宁波方太厨具有限公司 一种加热线盘结构及应用有该加热线盘结构的电磁灶
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US20160150600A1 (en) 2016-05-26
DE102014224051A1 (de) 2016-05-25
EP3026981A1 (fr) 2016-06-01
ES2644947T3 (es) 2017-12-01
US10433375B2 (en) 2019-10-01
PL3026981T3 (pl) 2018-01-31

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