EP3736500B1 - Platte für ein kochfeld - Google Patents

Platte für ein kochfeld Download PDF

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Publication number
EP3736500B1
EP3736500B1 EP19173111.6A EP19173111A EP3736500B1 EP 3736500 B1 EP3736500 B1 EP 3736500B1 EP 19173111 A EP19173111 A EP 19173111A EP 3736500 B1 EP3736500 B1 EP 3736500B1
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EP
European Patent Office
Prior art keywords
resistors
panel
rows
pin
plural
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
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EP19173111.6A
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English (en)
French (fr)
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EP3736500A1 (de
Inventor
Nevzat YALIN
Erol Özen
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.)
Vestel Elektronik Sanayi ve Ticaret AS
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Vestel Elektronik Sanayi ve Ticaret AS
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Priority to EP19173111.6A priority Critical patent/EP3736500B1/de
Publication of EP3736500A1 publication Critical patent/EP3736500A1/de
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Publication of EP3736500B1 publication Critical patent/EP3736500B1/de
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    • 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
    • F24C15/00—Details
    • F24C15/10—Tops, e.g. hot plates; Rings
    • F24C15/102—Tops, e.g. hot plates; Rings electrically heated
    • 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
    • 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
    • H05B1/00—Details of electric heating devices
    • H05B1/02—Automatic switching arrangements specially adapted to apparatus ; Control of heating devices
    • H05B1/0227—Applications
    • H05B1/0252—Domestic applications
    • H05B1/0258—For cooking
    • H05B1/0261—For cooking of food
    • H05B1/0266—Cooktops

Definitions

  • the present disclosure relates to a panel for a cooking hob.
  • US2012160820A1 discloses a cooking device which is capable of accurately detecting a liquid boiled over from a container in various directions and which is easy to use.
  • US2013008891A1 discloses an induction heating cooker that is capable of preventing a phenomenon that a drive circuit is stopped or a high-frequency current is reduced because boiling over is erroneously determined due to a fluctuation in electrostatic capacitance during cooking.
  • a panel for a cooking hob the panel being formed of an electrically and thermally insulative material, the panel comprising:
  • the hob may for example be a stand-alone hob or may be part of a cooker which also includes an oven.
  • the resistors in the one of the upper surface and the lower surface that underlie said region of the upper surface where heat is applied may be electrically connected in parallel with the resistors in the one of the upper surface and the lower surface that underlie said region of the upper surface where heat is applied.
  • the panel comprises plural thermally conductive pads on the upper surface, the thermally conductive pads being located at the junctions between respective pairs of serially connected resistors of the upper surface to transfer heat to the first ends of the pins when heat is applied to the thermally conductive pad.
  • a panel for a cooking hob the panel being formed of an electrically and thermally insulative material, the panel comprising:
  • the second end of the pin may normally be electrically connected with the pad. In another example, the second end of the pin may not be normally be electrically connected with the pad and makes an electrical connection with the pad when the pad expands.
  • the rows of resistors of the upper surface are parallel to each other.
  • the rows of resistors of the lower surface are parallel to each other.
  • each of the resistors of the rows of the upper surface has the same resistance.
  • each of the resistors of the rows of the lower surface has the same resistance.
  • each of the resistors of the rows of the upper surface and the rows of the lower surface has the same resistance.
  • the resistance of at least some of the resistors is different.
  • a cooking appliance comprising a hob having a panel as described above, a controller in communication with the rows of resistors of the upper surface and the lower surface, the controller being arranged to obtain a measure of the electrical resistance of the rows of resistors of the upper surface and the lower surface and to determine therefrom the location of said region or regions where heat is applied to the upper surface.
  • the drawings show examples of panels for a cooking appliance.
  • the cooking appliance may be for example a stand-alone hob (having one or more heater "rings") or may be for example a cooker having a hob and one or more ovens, a grill, etc.
  • the cooking appliance may for example use inductive heating of the pans or other cooking vessels placed on the hob, or may be an electric cooking appliance which has electrical resistive heating elements, a gas cooking appliance, a heat exchanger cooking appliance, etc.
  • the panel may therefore be or be part of an inductive hob.
  • the panel may be electrically insulative and may be formed of for example glass or ceramics or the like. In other examples, the panel may surround and/or underlie the heating rings of an electric or a gas or a heat exchanger hob.
  • a cooking appliance such as a hob or cooker or having a hob or the like
  • a user can be warned and/or corrective action can be taken, such as the cooking appliance turning itself off automatically.
  • Examples described herein use rows of resistors in the upper and lower surfaces of the panel.
  • the resistors in each row of the upper surface or the lower surface are normally electrically connected in series with each other and the resistors in each row of the other surface are normally not electrically connected with each other.
  • the panel is arranged such that when heat is applied to a region of the upper (cooking) surface, the not-normally-connected resistors that underlie the region of the upper surface where heat is applied are electrically connected in series with each other and are electrically connected with the resistors in the other surface that underlie the region of the upper surface where heat is applied. This affects the electrical resistance that is effectively provided by the various rows of resistors.
  • the resistances of the rows of resistors can be measured so as to enable the location of the region or regions where heat is being applied to be identified. This in turn gives an indication of how much liquid or other material has overflowed onto the cooking surface and exactly where. The user can then be warned and/or corrective action taken automatically (such as switching off the cooking appliance or turning down the heat being provided by the whole cooking appliance or at least locally in the region where an overspill has been detected).
  • a number of different ways of arranging the resistors in the upper and lower surfaces are possible.
  • FIG. 1 shows schematically a perspective view of a first example of a panel 10 for a cooking hob (not shown).
  • the cooking hob may be a stand-alone hob or may be provided as part of a cooker.
  • the hob may be for example an inductive heating hob or may be an electric or gas hob or use a heat exchange method.
  • the panel 10 provides a cooking surface, which is susceptible to spilling or overflow of liquids or the like from cooking vessels being heated on the hob in use.
  • the panel 10 is formed principally of an electrically insulative material, such as for example glass or ceramics or the like.
  • the panel 10 has an upper surface 12, which provides the cooking surface in use, and an opposed lower surface 14.
  • the panel 10 is solid throughout substantially the whole of its volume other than having through holes 16 which pass between the uppers and lower surfaces 12, 14, as will be discussed further below.
  • the panel 10 has a number of rows 18 of resistors 20 across the upper surface 12 or at least close to the upper surface 12, each upper row 18 having plural resistors 20. Likewise, the panel 10 has a number of rows 22 of resistors 24 across the lower surface 14 or at least close to the lower surface 14, each lower row 22 having plural resistors 24.
  • the rows 18, 22 are parallel to each other.
  • the rows 18, 22 of resistors 20, 24 are arrayed across the panel 10 so as to provide coverage across substantially the whole of the upper and lower surfaces 12, 14.
  • the spacing between the upper rows 18 and the lower rows 22 is the same, and the size of and distance between the resistors 20, 24 within the rows 18, 22 are the same.
  • resistors 20 in the upper rows 18 and resistors 24 in the lower rows 22 there is effectively a one-to-one correspondence between resistors 20 in the upper rows 18 and resistors 24 in the lower rows 22. This simplifies the measuring and control aspects, which will be discussed further below. There may nevertheless be examples where it may be useful to have different distances between some of the resistors 20, 24 and/or different size of resistors 20, 24.
  • the electrical resistance of the resistors 20 in the upper rows 18 is the same.
  • the electrical resistance of the resistors 24 in the lower rows 22 is the same.
  • the electrical resistance of the resistors 20, 24 in the upper and lower rows 18, 24 is the same. This again simplifies the measuring and control aspects, which will be discussed further below. There may nevertheless be examples where it may be useful to have different resistances for some of the resistors 20, 24. For example, as will be appreciated from the following, having different resistances for at least some of the resistors 20, 24 can help to identify the region where spillage has occurred more accurately.
  • the resistors 20 in each of the upper rows 18 are normally electrically connected in series with each other within the row 18. That is, in each of the upper rows 18, adjacent resistors 20 are electrically connected to each other at all times.
  • the resistors 24 in each of the lower rows 22 are normally not electrically connected with each other within the row 22. That is, in each of the lower rows 22, adjacent resistors 24 are not electrically connected with each other within the row 22 as a default, in particular when heat is not being applied to the panel 10 (which may occur when for example hot liquid or other material spills onto the upper surface 12).
  • the resistors 24 in each of the lower rows 22 are electrically connected with an adjacent resistor 24 in the row 22 only when (sufficient) heat is applied to the region of the upper surface 12 of the panel 10 that overlies the relevant resistor 24.
  • this is achieved as follows.
  • adjacent resistors 20 in the uppers rows 18 may be directly electrically connected to each other or may be electrically connected to each other via a pad 30 located at the junction between adjacent pairs of resistors 20.
  • the pads 30 provide the electrical connection between the adjacent pairs of resistors 20 in the upper rows 18, the pads 30 are formed of or include an electrically conductive material.
  • the pads 30 are also thermally conductive.
  • the pads 30 may conveniently be made of or include a metal.
  • adjacent resistors 24 in the lower rows 22 are separated from each other by respective small holes ( "pin holes") 32 in the material of the panel 10 located at the junctions between adjacent pairs of resistors 24.
  • the pin holes 32 represent the end of the cylindrical through holes 16 which extend through the panel 10 from the upper surface 12 to the lower surface 14.
  • One end of the cylindrical through holes 16 are centred between pairs of resistors 20 in the upper surface 12.
  • the second end of the cylindrical through holes 16 are centred between pairs of resistors 24 in the lower surface 14.
  • Each through hole 16 contains a length of material in the form of a thin and elongate shaft or pin 34.
  • the upper end of each pin 34 is in thermal contact with the respective pad 30 that is provided between the corresponding pair of resistors 20 in the upper row 18.
  • the length of the pin 34 when the pin 34 is cold is just less than the thickness of the panel 10 between the upper and lower surfaces 12, 14. As such, the lower end of each pin 34 does not normally extend to the lower surface 14.
  • the material of the pin 34 is such that the pin 34 extends or lengthens when heated and also so that the pin 34 is electrically conductive.
  • the pins 34 may conveniently be made of metal for example.
  • FIGS 3A and 3B show schematically different examples of electrical connection of resistors 20, 24 in the panel of Figures 1 and 2 according to where heat is applied to the panel 10.
  • a pan 40 is indicated schematically, with hot liquid or other material 42 overflowing the edges of the pan 40.
  • the spillage of material 42 is relatively small and therefore only extends over a relatively small region near the pan 40.
  • only a relatively small number of adjacent pairs of resistors 24 in a relatively small number of rows 22 in the lower surface 14 are electrically connected to each other by expansion of the corresponding pins 34 into the pin holes 32.
  • only the three leftmost pins 34 have expanded to fill the corresponding pin holes 32 between adjacent pairs of resistors 24 in the lower surface 14.
  • the other pins 34 have not extended to fill pin holes 32 between other pairs of resistors 24 in the lower surface 14 as those other pins 34 have not been heated or heated sufficiently.
  • the pins 34 that have expanded to fill pin holes 32 between adjacent pairs of resistors 24 in the lower surface 14 also make an electrical connection to the junction between corresponding pairs of resistors 20 in the upper surface 12.
  • the electrical connection of a pin 34 to the junction between a pair of resistors 20 in the upper surface 12 is via the pin 34 being in contact with the pad 30 between the pair of resistors 20.
  • the spillage of material 42 is relatively large and therefore extends to a relatively large region near the pan 40.
  • a relatively large number of adjacent pairs of resistors 24 in a relatively large number of rows 22 in the lower surface 14 are electrically connected to each other by expansion of the corresponding pins 34 into the pin holes 32.
  • all of the pins 34 have expanded to fill the corresponding pin holes 32 between adjacent pairs of resistors 24 in the lower surface 14.
  • the pins 34 that have expanded to fill pin holes 32 between adjacent pairs of resistors 24 in the lower surface 14 also make an electrical connection to the junction between corresponding pairs of resistors 20 in the upper surface 12.
  • a calculation can be made in advance of the overall electrical resistance for each combination when different pairs of adjacent resistors 24 in each lower row 22 are connected to each other and to the corresponding resistors 20 in the corresponding upper row 18. This may be carried out during for example manufacture of the panel 10 or the appliance in which the panel 10 is installed. It may be noted that the overall resistance for each combination when different pairs of adjacent resistors 24 in each lower row 22 are connected to each other and to the corresponding resistors 20 in the corresponding upper row 18 will (at least in general) be different and unique.
  • This data can be stored in some permanent, non-volatile memory or data storage area of the panel 10 or appliance, and may be stored in the form of for example a look-up table. This enables the resistance to be measured and then looked up so as to be able to identify which resistors 24 in the lower rows 22 have been electrically connected to each other and to which resistors 20 in the upper rows 18. This enables the extent of the region of the upper surface 12 that has been subject to a (hot) spillage to be identified.
  • Figure 1 shows schematically a controller 50 having separate electrical connections 52 to one end of each upper row 18 and each lower row 22 of resistors 20, 24.
  • the controller 50 may be a processor, a microcontroller, etc.
  • the controller 50 can continuously or periodically measure the resistance of each circuit formed by an upper row 18 and lower row 22 of resistors 20, 24. From the measured resistance, the controller 50 can identify which resistors 24 in the lower rows 22 have been electrically connected to each other and to which resistors 20 in the upper rows 18 and thereby identify the extent of the region of the upper surface 12 that has been subject to a (hot) spillage.
  • the controller 50 can cause some appropriate action to be taken. For example, the controller 50 can cause an appropriate warning to be triggered for the user, such as for example sounding an alarm and/or causing warning lights on the appliance to be flashed, etc.
  • the controller 50 may for example shut down the heating supplied by the cooking appliance, at least for heating rings or the like near the region that has been subject to a (hot) spillage. This may be particularly appropriate in the case that the controller 50 determines that the region is relatively large.
  • the controller 50 may cause anti-leakage measures to be implemented, such as causing retaining flaps or the like to be operated to be positioned around the edges so as to retain liquid on the upper surface 12.
  • FIG. 4 shows schematically a detailed perspective view of a portion of a second example of a panel 410.
  • components and features that correspond to components and features of the first example have their reference numerals increased by 400.
  • the arrangement of which resistors are normally connected and not connected is reversed compared to the first example.
  • the resistors 424 in each of the lower rows 422 are normally electrically connected with each other within the row 22. That is, in each of the lower rows 422, adjacent resistors 424 are electrically connected to each other at all times.
  • the resistors 420 in each of the upper rows 418 are normally not electrically connected in series with each other within the row 418.
  • adjacent resistors 420 are not electrically connected with each other within the row 418 as a default, in particular when heat is not being applied to the panel 410 (by for example hot liquid or other material spilling onto the upper surface 412).
  • the resistors 420 in each of the upper rows 418 are electrically connected with an adjacent resistor 420 in the row 418 only when (sufficient) heat is applied to the region of the upper surface 42 of the panel 410 that overlies the relevant resistor 420. In the present example, this is achieved as follows.
  • electrically conductive pads 460 are provided at the locations between adjacent pairs of resistors 420 in each of the upper rows 418.
  • Each pad 460 is sized so that normally it does not extend far enough laterally to contact the adjacent resistors 420 (as shown by hatching in Figure 4 ).
  • the pad 460 expands so as to make an electrical contact with the adjacent resistors 420 (as shown by shading in Figure 4 ), thereby electrically connecting the pair of adjacent resistors 420.
  • the pads 460 may be located in respective blind holes or recesses 470 in the upper surface 412 of the panel 410 which allow the pads 460 to expand and contract when heat is applied or removed.
  • each pad 460 is respectively electrically connected to the junction between the corresponding adjacent pairs of resistors 424 in the lower surface 414 by pins 480 which extend through through holes 416 in the panel 410.
  • the pins 480 always connect the pads 460 at the upper surface 412 to the junctions between the corresponding adjacent pairs of resistors 424 in the lower surface 414, and it is expansion of the pads 460 at the upper surface 412 that makes the connection between adjacent pairs of resistors 420 in the upper surface 412. This contrasts with the first example where expansion of the pin 480 makes the connection between adjacent pairs of resistors 24 in the lower surface 14.
  • a panel for a cooking hob has rows of resistors that are normally electrically connected in series with each other and rows of resistors that are normally not electrically connected with each other.
  • the not-normally-connected resistors that underlie the region of the upper surface where heat is applied are electrically connected in series with each other and with resistors in the other rows.
  • the electrical resistance through the rows can be measured. This gives an indication of where heat is being applied to the upper surface. This in turn gives an indication of how much liquid has overflowed and exactly where.
  • processor or processing system or circuitry referred to herein may in practice be provided by a single chip or integrated circuit or plural chips or integrated circuits, optionally provided as a chipset, an application-specific integrated circuit (ASIC), field-programmable gate array (FPGA), digital signal processor (DSP), graphics processing units (GPUs), etc.
  • the chip or chips may comprise circuitry (as well as possibly firmware) for embodying at least one or more of a data processor or processors, a digital signal processor or processors, baseband circuitry and radio frequency circuitry, which are configurable so as to operate in accordance with the exemplary embodiments.
  • the exemplary embodiments may be implemented at least in part by computer software stored in (non-transitory) memory and executable by the processor, or by hardware, or by a combination of tangibly stored software and hardware (and tangibly stored firmware).
  • Suitable devices include for example a hard disk and non-volatile semiconductor memory (including for example a solid-state drive or SSD).

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Electric Stoves And Ranges (AREA)

Claims (10)

  1. Platte (10) für ein Kochfeld, wobei die Platte (10) aus einem elektrisch und thermisch isolierenden Material gebildet ist, wobei die Platte (10) aufweist:
    eine Oberseite (12), die im Gebrauch eine Kochfläche bereitstellt;
    eine Unterseite (14), die der Oberseite (12) entgegengesetzt ist;
    wobei die Oberseite (12) mehrere Reihen (18) von mehreren Widerständen (20) hat, die über die Oberseite (12) angeordnet sind;
    wobei die Unterseite (14) mehrere Reihen (22) von mehreren Widerständen (24) hat, die entsprechend den über die Oberseite (12) angeordneten Reihen (18) mehrerer Widerstände (20) über die Unterseite (14) angeordnet sind; und
    mehrere elektrisch leitfähige Stifte (34), die von der Oberseite (12) in den Körper der Platte (10) zur Unterseite (14) verlaufen, wobei jeder Stift (34) an einem ersten Ende mit einer Verbindung zwischen einem jeweiligen Paar von in Reihe geschalteten Widerständen (20) der Oberseite (12) elektrisch verbunden ist;
    wobei die Widerstände (20) in jeder Reihe (18) der Oberseite (12) normalerweise miteinander elektrisch in Reihe geschaltet sind und die Widerstände (24) in jeder Reihe (22) der Unterseite (14) normalerweise nicht elektrisch miteinander verbunden sind;
    wobei jeder Stift (34) so angeordnet ist, dass, wenn Wärme auf einen Bereich der Oberseite (12) entsprechend dem ersten Ende des Stifts (34) ausgeübt wird, der Stift (34) derart expandiert, dass das zweite Ende des Stifts (34) eine elektrische Verbindung mit dem entsprechenden Paar von Widerständen (24) der Unterseite (14) macht, wodurch das Paar von Widerständen (24) der Unterseite (14) miteinander in Reihe und mit dem entsprechenden Paar von Widerständen (20) der Oberseite (12) elektrisch verbunden werden.
  2. Platte (10) nach Anspruch 1, wobei die Platte mehrere wärmeleitfähige Felder (30) auf der Oberseite (12) aufweist, wobei die wärmeleitfähigen Felder (30) an den Verbindungen zwischen jeweiligen Paaren von in Reihe geschalteten Widerständen (20) der Oberseite (12) angeordnet sind, um Wärme an die ersten Enden der Stifte (34) zu übertragen, wenn Wärme auf das wärmeleitfähige Feld (30) ausgeübt wird.
  3. Platte (410) für ein Kochfeld, wobei die Platte (410) aus einem elektrisch und thermisch isolierenden Material gebildet ist, wobei die Platte (410) aufweist:
    eine Oberseite (412), die im Gebrauch eine Kochfläche bereitstellt;
    eine Unterseite (414), die der Oberseite (412) entgegengesetzt ist;
    wobei die Oberseite (412) mehrere Reihen (418) von mehreren Widerständen (420) hat, die über die Oberseite (412) angeordnet sind;
    wobei die Unterseite (414) mehrere Reihen (422) von mehreren Widerständen (424) hat, die entsprechend den über die Oberseite (412) angeordneten Reihen (418) mehrerer Widerstände (420) über die Unterseite (414) angeordnet sind;
    wobei die Widerstände (420) in jeder Reihe (418) der Oberseite (412) normalerweise nicht elektrisch in Reihe miteinander verbunden sind und die Widerstände (424) in jeder Reihe (422) der Unterseite (414) normalerweise elektrisch miteinander verbunden sind;
    wobei die Platte (410) mehrere elektrisch leitfähige Stifte (460) auf der Oberseite (412) aufweist, wobei die elektrisch leitfähigen Stifte (460) zwischen jeweiligen Paaren von Widerständen (420) der Oberseite (412) angeordnet sind,
    wobei die Platte (410) mehrere elektrisch leitfähige Stifte (480) aufweist, die von der Unterseite (414) in den Körper der Platte (410) zur Oberseite (412) verlaufen;
    wobei jeder Stift (480) an einem ersten Ende mit einer Verbindung zwischen einem jeweiligen Paar von in Reihe geschalteten Widerständen (424) der Unterseite (414) elektrisch verbunden ist;
    wobei jedes elektrisch leitfähige Feld (460) so angeordnet ist, dass, wenn Wärme auf einen Bereich der Oberseite (12) entsprechend dem Feld (460) ausgeübt wird,
    das Feld (460) expandiert, um eine elektrische Verbindung zwischen dem entsprechenden Paar von Widerständen (420) der Oberseite (412) zu machen,
    wodurch das Paar von Widerständen (420) der Oberseite (412) miteinander in Reihe und mit dem entsprechenden Paar von Widerständen (424) der Unterseite (414) über den Stift (480) elektrisch verbunden werden.
  4. Platte (10, 410) nach einem der Ansprüche 1 bis 3, bei welcher die Reihen (18, 418) der Widerstände (20, 420) der Oberseite (12, 412) parallel zueinander sind.
  5. Platte (10, 410) nach einem der Ansprüche 1 bis 4, bei welcher die Reihen (22, 422) der Widerstände (24, 424) der Unterseite (14, 414) parallel zueinander sind.
  6. Platte (10, 410) nach einem der Ansprüche 1 bis 5, bei welcher jeder der Widerstände (20, 420) der Reihen (18, 418) der Oberseite (12, 412) den gleichen Widerstandswert hat.
  7. Platte (10, 410) nach einem der Ansprüche 1 bis 6, bei welcher jeder der Widerstände (24, 424) der Reihen (22, 422) der Unterseite (14, 414) den gleichen Widerstandswert hat.
  8. Platte (10, 410) nach Anspruch 6 und Anspruch 7, bei welcher jeder der Widerstände (20, 24, 420, 424) der Reihen (18, 418) der Oberseite (12, 412) und der Reihen (22, 422) der Unterseite (14, 414) den gleichen Widerstandswert hat.
  9. Platte (10, 410) nach einem der Ansprüche 1 bis 7, bei welcher der Widerstandswert von wenigstens manchen der Widerstände (20, 24, 420, 424) unterschiedlich ist.
  10. Kochgerät mit einem Kochfeld mit einer Platte (10, 410) nach einem der Ansprüche 1 bis 9, einer Steuerung in Kommunikation mit den Reihen (18, 22, 418, 422) der Widerstände (20, 24, 420, 424) der Oberseite (12, 412) und der Unterseite (14, 414), wobei die Steuerung eingerichtet ist, um ein Maß des elektrischen Widerstands der Reihen (18, 22, 418, 422) der Widerstände (20, 24, 420, 424) der Oberseite (12, 412) und der Unterseite (14, 414) zu erhalten und um daraus den Ort des Bereichs oder der Bereiche zu bestimmen, wo Wärme auf die Oberseite (12, 412) ausgeübt wird.
EP19173111.6A 2019-05-07 2019-05-07 Platte für ein kochfeld Active EP3736500B1 (de)

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EP3736500A1 EP3736500A1 (de) 2020-11-11
EP3736500B1 true EP3736500B1 (de) 2022-07-06

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EP2531002B1 (de) * 2010-01-29 2019-04-10 Panasonic Corporation Kochvorrichtung
ES2694399T3 (es) * 2010-06-10 2018-12-20 Panasonic Corporation Cocina de calentamiento por inducción
JP5202675B2 (ja) * 2011-03-29 2013-06-05 三菱電機株式会社 誘導加熱調理器
JP5722715B2 (ja) * 2011-07-11 2015-05-27 三菱電機株式会社 加熱調理器

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