EP2445309B1 - Temperaturmessvorrichtung für eine Gruppe von Induktoren eines Induktionskochfeldes, und zugehöriges Induktionskochfeld - Google Patents

Temperaturmessvorrichtung für eine Gruppe von Induktoren eines Induktionskochfeldes, und zugehöriges Induktionskochfeld Download PDF

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Publication number
EP2445309B1
EP2445309B1 EP11186031.8A EP11186031A EP2445309B1 EP 2445309 B1 EP2445309 B1 EP 2445309B1 EP 11186031 A EP11186031 A EP 11186031A EP 2445309 B1 EP2445309 B1 EP 2445309B1
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EP
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Prior art keywords
inductors
group
inductor
heat conductor
temperature
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EP11186031.8A
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English (en)
French (fr)
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EP2445309A1 (de
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Didier Gouardo
Philippe Richou
Serge Boyer
Jean-Pierre Nugeyre
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Groupe Brandt SAS
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Groupe Brandt SAS
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    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/02—Induction heating
    • H05B6/06—Control, e.g. of temperature, of power
    • H05B6/062—Control, e.g. of temperature, of power for cooking plates or the like
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B2213/00—Aspects relating both to resistive heating and to induction heating, covered by H05B3/00 and H05B6/00
    • H05B2213/07—Heating plates with temperature control means

Definitions

  • the present invention relates to a device for measuring the temperature of a group of inductors of an induction hob.
  • an induction hob comprising a set of inductors distributed in a two-dimensional grid in a hob of said induction hob, comprising a device for measuring the temperature of a group of inductors.
  • This device for measuring the temperature of an inductor comprises a temperature sensor delivering a temperature measurement and a heat conductor in thermal relation with said temperature sensor, said heat conductor comprising a plurality of branches attached to a common base in relation to one another. thermal with said temperature sensor
  • This device for measuring the temperature of an inductor takes into consideration that the bottom of the cooking vessel or containers is not systematically perfectly flat and that the cooking vessel or containers may be of different diameters.
  • this device for measuring the temperature of an inductor has the disadvantage of measuring the temperature of a cooking zone comprising a single inductor.
  • connection of the temperature measuring devices of an inductor to at least one electronic card of a control unit is complex to implement during the manufacture of such an induction hob.
  • This device for measuring the temperature of an inductor also presents the disadvantage of having the tabs of the heat conductor over an inductor in a radial direction relative to the induction coil.
  • This arrangement of the heat conductor relative to the inductor generates an averaged temperature measurement of the surface covered by the inductor by the tongues extending radially relative to the induction coil.
  • the maximum heating zone at the level of an inductor is at a diameter corresponding to half the diameter of the inductor.
  • this temperature measurement is an average value of the temperature at an inductor since the tongues of the heat conductor cover areas having a different temperature depending on their radial distance from the center of the induction coil. .
  • Such a device for measuring the temperature of an inductor can not measure a maximum temperature at an inductor.
  • this arrangement of the heat conductor with respect to the inductor causes a temperature measurement delay with respect to the temperature change at an inductor.
  • EP 1 575 336 A1 which describes a device for measuring the temperature of a group of inductors of an induction hob comprising a temperature sensor delivering a measurement of temperature and a heat conductor in thermal relation with said temperature sensor, said driver of heat comprising a plurality of branches attached to a common base in thermal relation with said temperature sensor, said heat conductor comprising at least two branches disposed above each inductor of said group of inductors, where at least a first branch of said conductor of heat is arranged on a first side between the central zone of an inductor and the outer edge of said inductor, and wherein at least one second branch of said heat conductor is disposed on a second side opposite said first side between the central zone said inductor and the outer edge of said inductor.
  • the present invention aims to solve the aforementioned drawbacks and to propose a device for measuring the temperature of a group of inductors of an induction hob, and an associated induction hob, for monitoring the temperature each inductor of a group of inductors at the lowest cost while ensuring the reliability and safety of use of the induction hob.
  • the present invention aims, in a first aspect, a device for measuring the temperature of a group of inductors of an induction hob comprising a temperature sensor delivering a temperature measurement and a heat conductor in thermal relation with said temperature sensor, said The outside of each inductor of a group of inductors is curved in the form of said inductor.
  • Such a temperature measuring device makes it possible to reduce the cost of obtaining an induction hob since the number of temperature measuring devices is equal to the number of groups of inductors.
  • each group of inductors comprises a single temperature measuring device so as to divide the number of temperature measuring devices by the number of inductors constituting a group of inductors of the induction hob.
  • thermometer measuring device makes it possible to minimize the number of electronic components of the control unit for the processing of the different signals sent by a temperature measuring device, as well as to minimize the processing capacity of the device.
  • at least one microcontroller processing the signals sent by a temperature measuring device since the signal processing is performed for a group of inductors.
  • connection of the temperature measuring device to at least one electronic card of a control unit is simplified during the manufacture of an induction hob since it is implemented for a group of inducers.
  • an induction hob comprising such a device for measuring the temperature of a group of inductors is guaranteed since each inductor of the group of inductors is thermally monitored by the measuring device of temperature.
  • the positioning of at least one branch of the heat conductor on each side of the central portion of each inductor of the group of inductors makes it possible to increase the thermal monitoring surface of each inductor.
  • Each branch of said heat conductor is disposed partly in a central zone located between the central zone and the outer edge of each inductor of a group of inductors.
  • each branch of said heat conductor disposed in said central zone between the central zone and the outer edge of each inductor of an inductor group is curved in the form of said inductor.
  • each branch of the heat conductor disposed in the central zone located between the central zone and the outer edge of each inductor of a group of inductors makes it possible to measure a maximum temperature at the level of an inductor.
  • each branch of the heat conductor covers the maximum heating area at an inductor at a diameter corresponding to half the diameter of the inductor.
  • each branch of the heat conductor makes it possible to maximize the overlap area of each inductor of a group of inductors so as to prevent a receptacle positioned on several inductors from covering or heat belonging to a group of inductors covered by the container.
  • said at least one first branch of said heat conductor and said at least one second branch of said heat conductor are arranged symmetrically on either side of a central axis M of each inductor of a group of inductors.
  • the present invention aims, according to a second aspect, a hob to induction, comprising a set of inductors distributed in a two-dimensional grid in a cooking plane of said hob, each inductor being powered by an inverter supply device controlled at a switching frequency, wherein said inductors are grouped together in one plurality of inductor groups.
  • Each group of inductors of the induction hob is equipped with a temperature measuring device according to the invention.
  • This induction hob has characteristics and advantages similar to those described above in connection with the temperature measuring device of a group of inductors according to the invention.
  • the hob 1 comprises heating means consisting of a set of inductors 2.
  • these inductors 2 are distributed in a two-dimensional grid in a hob 3 of the induction hob 1.
  • the induction hob 1 comprises a plurality of elementary inductors 2 arranged under the cooking plane 3 so as to cover the entire surface of the latter.
  • the inductors 2 are here of circular shape and of equal diameter, which can be of the order of 80 millimeters.
  • the inductors may be of different shape and size, such as, for example, triangular, rectangular, or octagonal.
  • the inductors 2 are arranged in line in a direction, for example horizontal as illustrated in FIG. figure 1 , and inductors 2 of each line are themselves arranged in staggered rows with the inductors 2 of adjacent lines so as to best cover the hob 3.
  • the arrangement of the inductors in the hob is not limiting and may be different.
  • the hob 3 thus formed via the inductors 2 can be of any shape, for example rectangular as illustrated in FIG. figure 1 .
  • the shape of the hob is not limiting and may be different, including square, circular or oval.
  • Such an induction hob 1 does not have predefined delimited heating zones, each heating zone being determined case by case depending on the position and the size of a container placed on the hob 3 and covering a subset of inductors 2.
  • Each inductor 2 can be fed in a conventional manner by an inverter supply device (not shown), composed of a half-bridge power electronic structure or a quasi-resonant circuit power electronics structure.
  • the container presence detection can be implemented by measuring the effective current flowing in each inductor 2 since it is dependent on the surface covered by said inductor 2 by a container.
  • the inductors 2 thus constitute both the heating means of a container and the means for detecting the presence of a container.
  • the control means (not shown) of the induction hob 1, comprising at least one or more microcontrollers, are able to control one or more containers placed on the hob 3 and apply operating powers to each zone. different or identical heaters which are dependent on the desired power demanded by the user for each container.
  • the induction hob 1 comprises a control keyboard 4 comprising at least selection means 5, such as, for example, sensor keys or touch screen, and display means 6, such as for example one or more LEDs made by means of light emitting diodes and / or one or more displays may be of the LCD type (acronym for the term Liquid Crystal Display).
  • selection means 5 such as, for example, sensor keys or touch screen
  • display means 6 such as for example one or more LEDs made by means of light emitting diodes and / or one or more displays may be of the LCD type (acronym for the term Liquid Crystal Display).
  • the temperature measuring device 7 of a group 18 of inductors 2 of an induction hob 1 comprises a temperature sensor 8 delivering a temperature measurement and a heat conductor 9 in thermal relation with said temperature sensor.
  • a group 18 of inductors 2 consists of three inductors 2.
  • each group of inductors may consist of a lower number of inductors, in particular two inductors, or a higher number of inductors, in particular four or more inductors.
  • the temperature sensor 8 may for example be a negative temperature coefficient sensor.
  • the type of temperature sensor is in no way limiting and may be different, such as, for example, of the type with a positive temperature coefficient.
  • the heat conductor 9 may be made for example of a material such as aluminum or copper.
  • the material constituting the heat conductor is in no way limiting and may be different, such as for example brass or an alloy.
  • the heat conductor 9 comprises a plurality of branches 10 attached to a common base 11 in thermal relation with the temperature sensor 8.
  • the heat conductor 9 comprises at least two branches 10 disposed above each inductor 2 of said group 18 of inductors 2, where at least a first branch 10 of said heat conductor 9 is disposed on a first side between the central zone 12 of an inductor 2 and the outer edge 13 of said inductor 2, and wherein at least one second leg 10 of said heat conductor 9 is disposed on a second side opposite said first side between the central zone 12 of said inductor 2 and the edge outside 13 of said inductor 2.
  • such a temperature measuring device 7 makes it possible to reduce the cost of obtaining an induction hob 1 since the number of temperature measuring devices 7 is equal to the number of groups 18 of inductors 2.
  • each group 18 of inductors 2 comprises a single temperature measuring device 7 so as to divide the number of measuring devices of temperature 7 by the number of inductors 2 constituting a group 18 of inductors 2 of the induction hob 1.
  • thermometer 7 makes it possible to minimize the number of electronic components of the control unit for processing the different signals sent by a temperature measuring device 7, as well as to minimize the capacity of the processing at least one signal processing microcontroller sent by a temperature measuring device 7 since the signal processing is performed for a group 18 of inductors 2.
  • connection of the temperature measuring device 7 to at least one electronic card of a control unit is simplified during the manufacture of an induction hob 1 since this is implemented for a group 18 of inductors 2.
  • an induction cooktop 1 comprising such a temperature measuring device 7 of a group 18 of inductors 2 is guaranteed since each inductor 2 of the group 18 of inductors 2 is monitored thermally by the temperature measuring device 7.
  • the heat conductor may comprise more than two branches disposed above each inductor of a group 18 of inductors.
  • said at least one first branch 10 of the heat conductor 9 and said at least one second branch 10 of the heat conductor 9 are arranged symmetrically on either side of a central axis M of each inductor 2 of a group 18 of inductors 2.
  • each branch 10 of the heat conductor 9 is arranged partly in a central zone located between the central zone 12 and the outer edge 13 of each inductor 2 of a group 18 of inductors 2.
  • each branch 10 of the heat conductor 9 disposed in the central zone located between the central zone 12 and the outer edge 13 of each inductor 2 of a group 18 of inductors 2 is curved according to the shape of said inductor 2.
  • each branch 10 of the heat conductor 9 disposed in the central zone located between the central zone 12 and the outer edge 13 of each inductor 2 of a group 18 of inductors 2 makes it possible to measure a maximum temperature at the an inductor 2.
  • each branch 10 of the heat conductor 9 covers the maximum heating zone at an inductor 2 located at a diameter corresponding to half the diameter of the inductor 2.
  • this arrangement of the curved portion 10a of each branch 10 of the conductor 9 relative to each inductor 2 of a group 18 of inductors 2 reactively monitors a temperature change at an inductor 2.
  • each branch 10 of the heat conductor 9 maximizes the overlap surface of each inductor 2 of a group 18 of inductors 2 so as to prevent a container positioned on several inductors 2 covers little or no heat conductor 9 belonging to a group 18 of inductors 2 covered by the container.
  • the temperature value determined by the temperature measuring device 7 is a maximum temperature value.
  • each branch 10 of the heat conductor 9 in the central zone located between the central zone 12 and the outer edge 13 of each inductor 2 of a group 18 of inductors 2 makes it possible to determine a value of maximum temperature that the container is centered or off-center with respect to the position of the temperature sensor 8 belonging to the temperature measuring device 7.
  • the heating zones formed randomly by the covering of inductors 2 by means of containers placed on the hob 3 are thermally monitored safely and at the least cost.
  • the common base 11 of the heat conductor 9 is located in the center of the heat conductor 9.
  • the temperature sensor 8 is disposed at the common base 11 of the heat conductor 9.
  • the common base 11 of the heat conductor 9 is disposed in the central portion of the group 18 of inductors 2.
  • the central line of the central zone situated between the central zone 12 and the outer edge 13 of an inductor 2 is at a distance of half a radius R from the central zone 12 of an inductor 2.
  • the curved portion 10a of the branches 10 of the heat conductor 9 of the temperature measuring device 7 extends along a central zone corresponding to half the diameter of the inductor 2.
  • Such a shape of the heat conductor 9 makes it possible to obtain a maximum overlap area of each of the inductors 2 of a group 18 of inductors 2 so as to measure the heating associated with a smaller diameter container ⁇ D disposed on the hob 3 and in a junction zone of several groups 18 of inductors 2.
  • each temperature measuring device 7 measures with increased precision the heating at each inductor 2 of a group 18 of inductors 2, even when the container disposed on the hob 3 and in a zone junction of several groups 18 of inductors 2 is of small diameter ⁇ D, such as for example of the order of 140mm.
  • each branch 10 of the driver of heat 9 arranged in the central zone situated between the central zone 12 and the outer edge 13 of each inductor 2 of a group 18 of inductors 2 follows the radius of curvature of the wound strand in the form of an induction coil of said inductor 2.
  • the common base 11 of the heat conductor 9 to which the branches 10 are attached is disposed in the central portion 14 of a group 18 of inductors 2.
  • each branch 10 of the heat conductor 9 extends from a first zone of the outer edge 13 of an inductor 2 to a second zone opposite to said first zone of the outer edge 13 of said inductor 2, where said first and second zones the outer edge 13 of said inductor 2 are disposed on either side of said central zone 12 of said inductor 2.
  • the end of said at least one first branch 10 of the heat conductor 9 and the end of said at least one second branch 10 of said heat conductor 9 are spaced from each other by a predetermined distance.
  • the ends of the at least first and second limbs 10 of the heat conductor 9 are spaced apart by a predetermined distance so as to prevent an induced current from flowing through the heat conductor 9. causing significant heating of the latter.
  • the predetermined distance between the ends of the at least first and second legs 10 of the heat conductor 9 makes it possible to cut off the current flow induced in the heat conductor 9.
  • the predetermined distance between the ends of said at least first and second legs 10 of the heat conductor 9 may be of the order of 20 mm.
  • each leg 10 of the heat conductor 9 comprises at least two tabs 15 parallel and spaced apart by a predetermined distance.
  • the predetermined distance between the said at least two parallel tabs 15 of each branch 10 of a heat conductor 9 minimizes the heating of the heat conductor 9 by the induced currents generated by an inductor 2.
  • the spacing of a predetermined distance between at least two parallel tabs 15 of a branch 10 of the heat conductor 9 makes it possible to avoid the circulation of an induced current inside this branch 10 of the heat conductor 9.
  • the slot formed between at least two parallel tabs 15 of a branch 10 of the heat conductor 9 makes it possible to cut off the circulation of an induced current inside this branch 10 of the heat conductor 9.
  • the spacing of a predetermined distance between at least two parallel tabs 15 of a branch 10 of the heat conductor 9 may be of the order of 2.5 mm.
  • the width of the parallel tabs 15 of a branch 10 of the heat conductor 9 may be of the order of 2mm.
  • each branch of the heat conductor may comprise more than two tabs.
  • the branches 10 of the heat conductor 9 are oriented above the inductors 2 of a group 18 of inductors 2 by means of a positioning element 16.
  • the positioning of the branches 10 of the heat conductor 9 relative to the inductors 2 of a group 18 of inductors 2 is guaranteed by means of the positioning element 16 so as to orient each branch 10 of the heat conductor 9 by relative to the central zone 12 of an inductor 2 and the outer edge 13 of said inductor 2.
  • the positioning element 16 holds in position the common base 11 of the heat conductor 9 and the temperature sensor 8.
  • the positioning element 16 is held in position on a support 17 of inductors 2, where the support 17 of inductors 2 also holds in position the inductors 2 of a group 18 of inductors 2.
  • the positioning element 16 cooperates with a support 17 of inductors 2 of a group 18 of inductors 2 so as to index the positioning of the branches 10 of the heat conductor 9 relative to the inductors 2 of the group 18 of inductors 2.
  • the inductor support 17 2 comprises an opening 20 for the passage of the positioning element 16. This opening 20 also allows the passage of electrical connection wires between the temperature sensor 8 and the control unit of the hob. induction 1.
  • the opening 20 of the support 17 of inductors 2 is disposed in central portion 14 of the group 18 of inductors 2.
  • the positioning element 16 is indexed with respect to the support 17 of inductors 2 by means of at least one, and preferably two, projecting element 22 formed on the contour of the opening 20 of the support 17 of inductors 2 inserted into a housing 23 formed on the contour of the positioning element 16.
  • the heat conductor 9 is positioned by relative to the positioning element 16 by means of two tabs 24 of the heat conductor 9 respectively inserted in a slot 25 of the positioning element 16.
  • the positioning element 16 may be a plug of silicone material.
  • the inductors 2 of a group 18 of inductors 2 are circular in shape.
  • the heat conductor 9 of the temperature measuring device 7 may be in thermal contact with a thermal insulating plate 19, such as for example based on ceramic fibers, so as to thermally isolate the heat conductor 9 from the inductors 2 of a group 18 of inductors 2.
  • This thermal insulating plate 19 is disposed above each group 18 of inductors 2.
  • the thermal insulating plate 19 may be of substantially triangular shape when a group 18 of inductors 2 is inscribed in a triangle.
  • thermal insulation board may be of different size and shape.
  • the thermal insulating plate 19 comprises an opening 21 for the passage of the positioning element 16. This opening 21 also allows the passage of the temperature sensor 8 and the heat conductor 9 respectively fixed on the positioning element 16.
  • the opening 21 of the thermal insulating plate 19 is disposed in central portion 14 of the group 18 of inductors 2.
  • a thermal insulation plate may cover a single inductor 2 with a number of thermal insulation plates 19 equal to the number of inductors 2 of the hob 3, or a thermal insulation plate 19 can cover all inductors 2 of the hob 3.
  • thermal insulating plate 19 between the induction coil of the inductor 2 and the heat conductor 9 of the temperature measuring device 7 makes it possible to promote the measurement of the heating of the container disposed on the hob 3 with respect to the heating of the inductor 2.
  • thermal insulating plate 19 as well as the distance between the induction coil of the inductor 2 and the heat conductor 9 of the temperature measuring device 7 make it possible to create an electrical insulator between the heat conductor 9. and the induction coil.
  • the heat conductor 9 of the temperature measuring device 7 may be in thermal contact with a plate of non-magnetic material (not shown) supporting the plan containers cooking zone 3 so as to reactively determine a temperature change at the plate of non-magnetic material when heating at least one container.
  • the induction hob 1 comprises control means provided with a control unit.
  • the control unit comprises at least one electronic card provided with at least one microcontroller capable of communicating with one or more temperature measuring devices according to the invention.
  • control unit controls in particular the inductors 2, and the temperature measuring device or devices 7 so as to monitor the temperature at each heating zone of the hob 3 of the induction hob 1 and managing the display and the extinction of at least one residual heat indicator on said at least one display means 6 as a function of the temperature determined by one or more temperature sensors 8.
  • such a temperature measuring device reduces the cost of obtaining an induction hob since the number of temperature measuring devices is equal to the number of groups of inductors.
  • each group of inductors comprises a single temperature measuring device so as to divide the number of temperature measuring devices by the number of inductors constituting a group of inductors of the induction hob.
  • the present invention is neither limited in the number of inductors distributed in a two-dimensional grid in the hob of the induction hob, nor in the number of heating zones that can be defined on the hob. from the position of a container covering a subset of inductors.
  • the number of inductors of the inductor group disposed below a heat conductor is not limited to the embodiment described above and may be different.

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

Claims (12)

  1. Temperaturmessvorrichtung (7) einer Gruppe (18) von Induktoren (2) einer Induktionskochplatte (1), umfassend einen Temperatursensor (8), der eine Temperaturmessung ausgibt, und einen Wärmeleiter (9), der in thermischer Verbindung mit dem Temperatursensor (8) steht, wobei der Wärmeleiter (9) eine Vielzahl von Verzweigungen (10) umfasst, die an einer gemeinsamen Grundplatte (11) befestigt sind, die in thermischer Verbindung mit dem Temperatursensor (8) steht, wobei der Wärmeleiter (9) mindestens zwei Verzweigungen (10) umfasst, die über jedem Induktor (2) der Gruppe (18) von Induktoren (2) angeordnet sind, wo mindestens eine erste Verzweigung (10) des Wärmeleiters (9) auf einer ersten Seite zwischen dem Mittelbereich (12) eines Induktors (2) und dem Außenrand (13) des Induktors (2) angeordnet ist, und wo mindestens eine zweite Verzweigung (10) des Wärmeleiters (9) auf einer zweiten Seite gegenüber der ersten Seite in Bezug auf den Mittelbereich (12) angeordnet ist, zwischen dem Mittelbereich (12) des Induktors (2) und dem Außenrand (13) des Induktors (2), dadurch gekennzeichnet, dass jede Verzweigung (10) des Wärmeleiters (9) teilweise in einem mittleren Bereich angeordnet ist, der sich zwischen dem Mittelbereich (12) und dem Außenrand (13) jedes Induktors (2) einer Gruppe (18) von Induktoren (2) befindet, und dadurch, dass der Teil (10a) jeder Verzweigung (10) des Wärmeleiters (9), der im mittleren Bereich angeordnet ist, der sich zwischen dem Mittelbereich (12) und dem Außenrand (13) jedes Induktors (2) einer Gruppe (18) von Induktoren (2) befindet, gemäß der Form des Induktors (2) gekrümmt ist.
  2. Temperaturmessvorrichtung (7) einer Gruppe (18) von Induktoren (2) einer Induktionskochplatte (1) nach Anspruch 1, dadurch gekennzeichnet, dass die mindestens eine erste Verzweigung (10) des Wärmeleiters (9) und die mindestens eine zweite Verzweigung (10) des Wärmeleiters (9) symmetrisch auf beiden Seiten einer Mittelachse (M) jedes Induktors (2) einer Gruppe (18) von Induktoren (2) angeordnet sind.
  3. Temperaturmessvorrichtung (7) einer Gruppe (18) von Induktoren (2) einer Induktionskochplatte (1) nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass der gekrümmte Teil (10a) jeder Verzweigung (10) des Wärmeleiters (9), der im mittleren Bereich angeordnet ist, der sich zwischen dem Mittelbereich (12) und dem Außenrand (13) jedes Induktors (2) einer Gruppe (18) von Induktoren (2) befindet, dem Krümmungsradius des in Form einer Induktionsspule gewickelten Leiterelements des Induktors (2) folgt.
  4. Temperaturmessvorrichtung (7) einer Gruppe (18) von Induktoren (2) einer Induktionskochplatte (1) nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass die gemeinsame Grundplatte (11) des Wärmeleiters (9), an der die Verzweigungen (10) befestigt sind, im Mittelteil (14) einer Gruppe (18) von Induktoren (2) angeordnet ist.
  5. Temperaturmessvorrichtung (7) einer Gruppe (18) von Induktoren (2) einer Induktionskochplatte (1) nach Anspruch 4, dadurch gekennzeichnet, dass sich jede Verzweigung (10) des Wärmeleiters (9) von einem ersten Bereich des Außenrands (13) eines Induktors (2) zu einem zweiten Bereich gegenüber dem ersten Bereich des Außenrands (13) des Induktors (2) erstreckt, wo der erste und zweite Bereich des Außenrands (13) des Induktors (2) auf beiden Seiten des Mittelbereichs (12) des Induktors (2) angeordnet sind.
  6. Temperaturmessvorrichtung (7) einer Gruppe (18) von Induktoren (2) einer Induktionskochplatte (1) nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass das Ende der mindestens einen ersten Verzweigung (10) des Wärmeleiters (9) und das Ende der mindestens einen zweiten Verzweigung (10) des Wärmeleiters (9) in einem vorausbestimmten Abstand voneinander beabstandet sind.
  7. Temperaturmessvorrichtung (7) einer Gruppe (18) von Induktoren (2) einer Induktionskochplatte (1) nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass jede Verzweigung (10) des Wärmeleiters (9) mindestens zwei parallele Zungen (15) umfasst, die in einem vorausbestimmten Abstand voneinander beabstandet sind.
  8. Temperaturmessvorrichtung (7) einer Gruppe (18) von Induktoren (2) einer Induktionskochplatte (1) nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass die Verzweigungen (10) des Wärmeleiters (9) über den Induktoren (2) einer Gruppe (18) von Induktoren (2) mithilfe eines Positionierelements (16) ausgerichtet werden.
  9. Temperaturmessvorrichtung (7) einer Gruppe (18) von Induktoren (2) einer Induktionskochplatte (1) nach Anspruch 8, dadurch gekennzeichnet, dass das Positionierelement (16) die gemeinsame Grundplatte (11) des Wärmeleiters (9) und den Temperatursensor (8) in Position hält.
  10. Temperaturmessvorrichtung (7) einer Gruppe (18) von Induktoren (2) einer Induktionskochplatte (1) nach Anspruch 8 oder 9, dadurch gekennzeichnet, dass das Positionierelement (16) auf einem Träger (17) von Induktoren (2) in Position gehalten wird, wo der Träger (17) von Induktoren (2) ebenfalls die Induktoren (2) einer Gruppe (18) von Induktoren (2) in Position hält.
  11. Temperaturmessvorrichtung (7) einer Gruppe (18) von Induktoren (2) einer Induktionskochplatte (1) nach einem der Ansprüche 1 bis 10, dadurch gekennzeichnet, dass die Induktoren (2) einer Gruppe (18) von Induktoren (2) kreisförmig sind.
  12. Induktionskochplatte (1), umfassend eine Einheit von Induktoren (2), die gemäß einem zweidimensionalen Raster in einem Kochfeld (3) der Kochplatte (1) verteilt sind, wobei jeder Induktor (2) von einer Versorgungsvorrichtung mit Wechselrichter versorgt wird, die mit einer Schaltfrequenz gesteuert wird, wo die Induktoren (2) in eine Vielzahl von Gruppen (18) von Induktoren (2) zusammengefasst sind, dadurch gekennzeichnet, dass jede Gruppe (18) von Induktoren (2) mit einer Temperaturmessvorrichtung (7) nach einem der Ansprüche 1 bis 11 ausgestattet ist.
EP11186031.8A 2010-10-21 2011-10-20 Temperaturmessvorrichtung für eine Gruppe von Induktoren eines Induktionskochfeldes, und zugehöriges Induktionskochfeld Active EP2445309B1 (de)

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FR1004133A FR2966687B1 (fr) 2010-10-21 2010-10-21 Dispositif de mesure de temperature d'un groupe d'inducteurs d'une table de cuisson a induction et table de cuisson a induction associee.

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Cited By (8)

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US10605464B2 (en) 2012-10-15 2020-03-31 Whirlpool Corporation Induction cooktop
US10893579B2 (en) 2017-07-18 2021-01-12 Whirlpool Corporation Method for operating an induction cooking hob and cooking hob using such method
US10993292B2 (en) 2017-10-23 2021-04-27 Whirlpool Corporation System and method for tuning an induction circuit
US11140751B2 (en) 2018-04-23 2021-10-05 Whirlpool Corporation System and method for controlling quasi-resonant induction heating devices
US11212880B2 (en) 2012-10-15 2021-12-28 Whirlpool Emea S.P.A. Induction cooking top
US11310874B2 (en) 2018-03-23 2022-04-19 Whirlpool Corporation Induction cooktop with improved magnetic flux concentrating foil
US11388785B2 (en) 2018-03-23 2022-07-12 Whirlpool Corporation Connection interface for induction coil array
US11405989B2 (en) 2018-03-23 2022-08-02 Whirlpool Corporation Temperature sensor compression features for induction cooktop assembly

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2994050B1 (fr) * 2012-07-26 2016-03-04 Fagorbrandt Sas Nappe de materiau isolant pour inducteurs d'un appareil de cuisson a induction et appareil de cuisson a induction associe

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FR2650669B1 (fr) * 1989-08-04 1993-10-29 Equipement Menager Cie Europ Dispositif de mesure de temperature pour appareil de cuisson a induction et appareil comportant un tel dispositif
DE19604436A1 (de) * 1996-02-07 1997-08-14 Bosch Siemens Hausgeraete Muldenplatteninduktor
FR2788115B1 (fr) * 1998-12-30 2001-03-23 Cepem Montage d'un capteur de temperature dans une table de cuisson
FR2867653B1 (fr) * 2004-03-12 2008-08-08 Brandt Ind Module d'assemblage de bobines d'induction d'une zone de cuisson par chauffage par induction et zone de cuisson comprenant lesdits modules
EP2337426B1 (de) * 2009-12-19 2014-08-20 Electrolux Home Products Corporation N.V. Induktionskochfeld mit Induktionsspulen und Vorrichtung zur Bestimmung der Induktionsspulentemperatur

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10605464B2 (en) 2012-10-15 2020-03-31 Whirlpool Corporation Induction cooktop
US11212880B2 (en) 2012-10-15 2021-12-28 Whirlpool Emea S.P.A. Induction cooking top
US11655984B2 (en) 2012-10-15 2023-05-23 Whirlpool Corporation Induction cooktop
US10893579B2 (en) 2017-07-18 2021-01-12 Whirlpool Corporation Method for operating an induction cooking hob and cooking hob using such method
US10993292B2 (en) 2017-10-23 2021-04-27 Whirlpool Corporation System and method for tuning an induction circuit
US11310874B2 (en) 2018-03-23 2022-04-19 Whirlpool Corporation Induction cooktop with improved magnetic flux concentrating foil
US11388785B2 (en) 2018-03-23 2022-07-12 Whirlpool Corporation Connection interface for induction coil array
US11405989B2 (en) 2018-03-23 2022-08-02 Whirlpool Corporation Temperature sensor compression features for induction cooktop assembly
US11140751B2 (en) 2018-04-23 2021-10-05 Whirlpool Corporation System and method for controlling quasi-resonant induction heating devices

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FR2966687B1 (fr) 2016-11-04
ES2583264T3 (es) 2016-09-20
EP2445309A1 (de) 2012-04-25
FR2966687A1 (fr) 2012-04-27

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