EP2440007B1 - Method for controlling the operation of a set of induction units of an induction cooktop and associated induction cooktop - Google Patents

Method for controlling the operation of a set of induction units of an induction cooktop and associated induction cooktop Download PDF

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Publication number
EP2440007B1
EP2440007B1 EP11184075.7A EP11184075A EP2440007B1 EP 2440007 B1 EP2440007 B1 EP 2440007B1 EP 11184075 A EP11184075 A EP 11184075A EP 2440007 B1 EP2440007 B1 EP 2440007B1
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EP
European Patent Office
Prior art keywords
inductors
heating zone
display
hob
residual heat
Prior art date
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.)
Revoked
Application number
EP11184075.7A
Other languages
German (de)
French (fr)
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EP2440007A2 (en
EP2440007A3 (en
Inventor
Jean-Marc Bugeia
Xavier Andre
Didier Gouardo
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Groupe Brandt SAS
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Groupe Brandt SAS
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Publication date
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Publication of EP2440007A2 publication Critical patent/EP2440007A2/en
Publication of EP2440007A3 publication Critical patent/EP2440007A3/en
Application granted granted Critical
Publication of EP2440007B1 publication Critical patent/EP2440007B1/en
Revoked legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • H05B6/06—Control, e.g. of temperature, of power
    • H05B6/062—Control, e.g. of temperature, of power for cooking plates or the like
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B2213/00—Aspects relating both to resistive heating and to induction heating, covered by H05B3/00 and H05B6/00
    • H05B2213/03—Heating plates made out of a matrix of heating elements that can define heating areas adapted to cookware randomly placed on the heating plate
    • 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

Definitions

  • the present invention relates to a control method in operation of a set 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, adapted to implement the control method according to the invention.
  • the invention relates to the control in operation of the inductors in an induction hob having no predefined heating zones.
  • Induction hobs with independent cooking hobs are already known, the number, position and size of hobs being defined by the induction hob manufacturer.
  • the cooking hobs are symbolized on the hob of the induction hobs by a marking made by screen printing.
  • Each cooking zone is respectively associated with one or more display elements of the control means.
  • the data required to control one of the cooking stoves are displayed by means of this or these respective display elements.
  • the safety data associated with each cooking stove such as the residual heat indicator, are displayed in the display element or elements associated with each cooking zone.
  • each heating zone is constituted case by case depending on the position and the size of the container placed on the cooking surface. vis-à-vis a subset of inductors.
  • each inductor is powered by an inverter supply device, including implementing a power switch of the bipolar transistor type such as an IGBT transistor (acronym for the term “Insulated Gate Bipolar Transistor”) or a transistor MOS (acronym for the term “Metal Oxide Semiconductor”).
  • a power switch of the bipolar transistor type such as an IGBT transistor (acronym for the term “Insulated Gate Bipolar Transistor") or a transistor MOS (acronym for the term “Metal Oxide Semiconductor”).
  • the position of at least one heating zone on the hob of a matrix-type induction hob may therefore be random. And therefore, the representation of said at least one heating zone on a display means, such as a graphical display, may also be random.
  • a heating zone does not correspond to one or more respective display elements on the display means since each zone can take a multitude of positions on the hob.
  • the documents are also known FR 2 863 039 A1 , WO 97/37515 A1 and WO 2009/053279 A1 which describe an induction hob where the inductors are distributed in a two-dimensional grid in a hob of the induction hob.
  • the induction hob is adapted to detect at least one heating zone consisting of a subset of inductors at least partially covered by a container, to represent the at least one heating zone on at least one means of heating. display, to operate inductors of said at least one heating zone, and to stop inductors of said at least one heating zone.
  • the document is also known DE 10 2007 057 332 A1 which describes a hob comprising independent cooking hobs whose number, position and size of the cooking hobs are predefined.
  • the cooking hobs are symbolized on the hob of the hob.
  • Each cooking zone is respectively associated with a display element of a display.
  • the data required to control one of the cooking stoves is displayed through the display element associated with a cooking zone.
  • the security data associated with each cooking zone such as the residual heat indicator, are displayed in the display element associated with a cooking zone.
  • EP 1 978 784 A1 which describes a hob where the heating elements are distributed in a two-dimensional grid in a hob of the hob.
  • a control unit makes it possible to determine an exceeding of a first threshold temperature value at at least one heating zone in the hob. Then, an indication can be displayed on a display to warn the user that an exceeding of a first threshold temperature value in at least one heating zone has been detected.
  • Said at least one detected heating zone corresponds to at least one zone where the temperature estimated according to a mathematical model, taking into account in particular the heating power and the heating time of the heating elements, exceeds a threshold temperature value.
  • the present invention aims to solve the aforementioned drawbacks and to provide a control method in operation of a set of inductors of an induction hob, and an associated induction hob, for managing in a manner secure with at least one display means the display and the extinction of at least one residual heat indicator generated by a heating of the hob at at least one heating zone of a container placed on the hob of the induction cooktop of the matrix type so as to warn and protect users.
  • the present invention aims, in a first aspect, a control method in operation of a set of inductors of an induction hob, said inductors being distributed in a two-dimensional grid in a cooking hob of said induction hob, and each inductor being powered by an inverter supply device, said inductors forming means for heating a container and means for detecting the presence of a container
  • the operating control method of a set of inductors of an induction hob makes it possible to clearly and significantly display the display position of at least one residual heat indicator on at least one means of display so as to guarantee the safety of users.
  • This operating method of operating a set of inductors of an induction hob makes it possible to display as realistically as possible at least one heating zone of the hob on said at least one means of cooking. display.
  • the step of detecting at least one heating zone consisting of a subset of inductors covered at least partially by a receptacle makes it possible to determine the presence or absence of one or more receptacles on the cooking surface of the cooking chamber.
  • matrix-type induction hob The step of detecting at least one heating zone consisting of a subset of inductors covered at least partially by a receptacle makes it possible to determine the presence or absence of one or more receptacles on the cooking surface of the cooking chamber.
  • the step of representing said at least one heating zone on at least one display means makes it possible to display on said at least one display means the positioning of the container or containers previously detected.
  • the step of operating the inductors of said at least one heating zone is implemented for each container detected and controlled by at least one power setpoint.
  • the operation of the inductors of the heating zone associated with each detected and controlled receptacle causes a heating zone to the location of the container (s) concerned on the hob of the matrix-type induction hob.
  • the step of stopping the inductors of said at least one heating zone is implemented after a programmed elapsed time or by a stop command of said at least one heating zone.
  • the presence of the heating zone (s) at the location of the container (s) concerned on the hob of the matrix-type induction hob must be signaled to the user so as to guarantee its safety.
  • the method implements the step of determining an exceeding of a first threshold temperature value at at least one zone of heating in said hob belonging to said at least one heating zone.
  • This step of determining an exceeding of a first threshold temperature value in the hob can determine the presence of the heating zone (s) at the location of the container (s) concerned on the cooking surface of the cooking zone. matrix-type induction hob.
  • the method implements the step of displaying at least one residual heat indicator on said at least one display means, wherein the position of said at least one residual heat indicator on said at least one means for displaying display is dependent on the position of said at least one heating zone detected in the hob.
  • This step of displaying at least one residual heat indicator on said at least one display means makes it possible to accurately display the actual position of at least one heating zone of the hob of the hob. matrix-type induction on said at least one display means by means of at least one residual heat indicator.
  • said at least one residual heat indicator is displayed at the same location as the representation of said at least one heating zone on said at least one display means as soon as an exceeding of said first temperature threshold value is detected at said at least one heating zone.
  • the displayed position of at least one residual heat indicator on said at least one display means corresponds to the actual position of at least one heating zone of the hob of the type induction hob. matrix since said displayed position corresponds to the position of at least one heating zone of a container placed on the hob, and not to the position of a temperature sensor located inside the hob.
  • said method comprises a step of determining the coordinates representing said at least one heating zone on said at least one display means during the step of detecting said at least one heating zone on said hob, and a step of assigning said coordinates representing said at least one heating zone on said at least one display means to the positioning coordinates of said at least one residual heat indicator on said at least one display as soon as an exceeding of said first temperature threshold value is detected at said at least one heating zone.
  • the present invention aims, in a second aspect, an induction hob, comprising a set of inductors distributed in a two-dimensional grid in a cooking plane of said induction hob, each inductor being powered by a device of inverter power supply.
  • the induction hob includes control means adapted to implement the control method.
  • This induction hob has characteristics and advantages similar to those described above in relation to the control method 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 can 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 FIGS. Figures 1 and 2 , and the inductors 2 of each line are themselves arranged in staggered rows with the inductors 2 of the 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 FIGS. Figures 1 and 2 .
  • 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. of heating, different or identical that are depending on the user-requested setpoint power for each container.
  • the induction hob 1 comprises a control keyboard 4 comprising at least selection means 5, such as for example touch keys or a touch screen, and display means 6, such as for example one or more lights made by means of light-emitting diodes and / or one or more displays that can be of the LCD type (acronym for the term Liquid Crystal Display).
  • selection means 5 such as for example touch keys or a touch screen
  • display means 6 such as for example one or more lights made by means of light-emitting diodes and / or one or more displays that can be of the LCD type (acronym for the term Liquid Crystal Display).
  • the step of detecting at least one heating zone Z1 consisting of a subset of inductors 2 at least partially covered by a container makes it possible to determine the presence or absence of one or more containers on the cooking surface. 3 of the induction cooktop 1 of the matrix type.
  • the step of representing said at least one heating zone Z1 on at least one display means 6 makes it possible to display on said at least one display means 7 the positioning of the container or containers previously detected.
  • Said at least one display means 6 is preferably a graphical type of display, such as for example the LCD (acronym for the English term Liquid Crystal Display) which can be monochrome or color.
  • LCD liquid crystal Display
  • This graphic display device allows the representation of graphic objects, such as, for example, the heating zone (s) Z1 of the hob 3, from the information collected by a control unit of the induction hob 1 comprising at least one microcontroller, where the information collected may include the presence or absence of one or more containers on the cooking plane 3, the position and / or the size of the container or containers detected.
  • the result of the step of detecting at least one heating zone Z1 makes it possible to determine the coordinates of the position of at least one container on the hob 3 of the induction hob 1. Then these coordinates of said at least one heating zone Z1 associated with said at least one container are transposed in the reference of said at least one display means 6 so as to represent at least one container on said at least one display means 6 by a graphic object .
  • the step of operating the inductors 2 of said at least one heating zone Z1 is implemented for each container detected and controlled by at least one power setpoint.
  • the operation of the inductors 2 of the heating zone Z1 associated with each detected and controlled receptacle causes a heating zone at the location of the receptacle (s) concerned on the hob 3 of the induction hob 1 of matrix type.
  • the step of stopping the inductors 2 of said at least one heating zone Z1 is carried out after an elapsed programmed duration or by a stop command of said at least one heating zone Z1.
  • the stop of the inductors 2 of said at least one heating zone Z1 can be manually controlled by the activation of one of the selection means 5 of the control keyboard 4 by activating a stop command of said at least one zone of Z1 heater.
  • the shutdown of the inductors 2 of said at least one heating zone Z1 can also be automatically controlled by the countdown of a previously programmed timer, where the countdown of the timer is controlled by a control unit of the induction cooktop. 1 comprising at least one microcontroller.
  • the programming of the timer can be performed through the selection means 5 of the control keyboard 4.
  • the presence of the heating zone or zones at the location of the container or containers concerned on the hob 3 of the induction cooktop 1 of matrix type is to be reported to the user so as to ensure its safety.
  • the method implements the step of determining an exceeding of a first threshold temperature value at at least one heating zone in said cooking plane 3 belonging to said at least one zone of heating. Z1 heater.
  • This step of determining an overrun of a first temperature threshold value in the hob 3 makes it possible to determine the presence of the heating zone or zones at the location of the container (s) concerned on the hob 3 induction cooktop 1 of the matrix type.
  • the operating control method of a set of inductors 2 of an induction cooktop 1 makes it possible to clearly and significantly display the display position of at least one residual heat indicator H on at least one display means 6 so as to guarantee the safety of the users.
  • This control method in operation of a set of inductors 2 of an induction hob 1 makes it possible to display as realistically as possible at least one heating zone of the hob 3 on said at least one display medium 6.
  • control method implements the step of displaying at least one residual heat indicator H on the hob 3 said at least one display means 6, wherein the position of said at least one residual heat indicator H on said at least one display means 6 is dependent on the position of said at least one heating zone detected in the plane cooking 3.
  • This step of displaying at least one residual heat indicator H on said at least one display means 6 makes it possible to accurately display the actual position of at least one heating zone of the hob 3 of the induction cooktop 1 of the matrix type on said at least one display means 6 by means of at least one residual heat indicator H.
  • Said at least one display means 6 makes it possible to display as many residual heat lamps H as detected heating zones of the hob 3.
  • the method comprises a step of determining the coordinates representing said at least one heating zone Z1 on said at least one display means 6 during the step of detecting said at least one heating zone Z1 on the hob 3, and a step of assigning said coordinates representing said at least one heating zone Z1 to said at least one display means 6 at the positioning coordinates of said at least one residual heat indicator H on said at least one display 6 as soon as an exceeding of said first threshold temperature value is detected at said at least one heating zone Z1.
  • the induction hob 1 comprises a plurality of temperature sensors 7 in the hob 3 detecting at least one heating zone of said hob 3.
  • the step of determining an overshoot of a first threshold temperature value is implemented by means of at least one temperature sensor 7 in the hob 3, where the at least one temperature sensor 7 is at least partially covered by a heated container during the step of operating the inductors 2 of said at least one heating zone Z1.
  • the step of displaying at least one residual heat indicator H on said at least one display means 6 displays the position of said at least one residual heat indicator H on said at least one display means 6 function of the position of said at least one temperature sensor 7 having detected the exceeding of the first temperature threshold value in the hob 3.
  • the temperature data measured by the temperature sensors 7 are analyzed by the control unit of the induction hob 1 so as to determine it is necessary to display at least one residual heat indicator H on said at least one display means 6.
  • the temperature data measured by the temperature sensors 7 can be in the form of digital data for their processing by at least one microcontroller of the control unit, where these temperature data are the image of the temperature present at the temperature level. at least one heating zone in the hob 3.
  • At least one temperature sensor 7 exceeds at least a first threshold temperature value, then at least one residual heat indicator H must be symbolized on said at least one display means 6.
  • said at least one residual heat indicator H is displayed on said at least one display means 6 at the corresponding position of at least one temperature sensor 7 in the hob 3 as soon as said at least one temperature sensor 7 belonging to said at least one heating zone Z1 detects the exceeding of said first temperature threshold value.
  • the displayed position of at least one residual heat indicator H on said at at least one display means 6 corresponds to the position of at least one temperature sensor 7 belonging to said at least one heating zone Z1 while minimizing the loss of precision of the display position of said at least one residual heat indicator H on said at least one display means 6 with respect to said at least one actual heating zone of the hob 3 while ensuring the safety of the user and limiting the loss of information of the position of said at least one actual zone of heating by said at least one residual heat indicator.
  • the residual heat indicator H is displayed on said at least one display means 6 at the position corresponding to the temperature sensor 7 measuring the highest temperature and detecting the exceeding of the first temperature threshold value following the shutdown of the inductors 2 of the heating zone Z1.
  • This temperature measurement of said temperature sensor 7 is read by the control unit of the induction hob 1 and follows the evolution of the temperature measurement of said temperature sensor 7.
  • the display of the residual heat indicator H is implemented on said at least one display means 6 as a function of the temperature sensor 7 having detected an exceeding of the first threshold temperature value. and where the measured temperature value is the highest, without taking into consideration the temperature measurement of the other temperature sensors 7 belonging to the heating zone Z1.
  • said at least one residual heat indicator H is displayed at the same location as the representation of said at least one heating zone Z1 on said at least one display means 6 as soon as at least one temperature sensor 7 belonging to said at least one heating zone Z1 detects the exceeding of said first threshold temperature value.
  • the displayed position of at least one residual heat indicator H on said at least one display means 6 corresponds to the actual position of at least one heating zone of the hob 3 of the cooking hob.
  • induction 1 of the matrix type since said displayed position corresponds to the position of at least one heating zone Z1 of a container placed on the hob 3, and not to the position of said at least one temperature sensor 7 located at the inside said at least one heating zone Z1 of a container placed on the cooking surface 3.
  • each inductor 2 of the induction hob 1 comprises a temperature sensor 7.
  • Such a hardware configuration of the induction hob 1 makes it possible by means of the processing of the temperature data coming from the sensors of temperature 7 by the control unit of said table 1 to define at least one heating zone of the hob 3 corresponding to at least one heating zone Z1 of a container on the hob 3.
  • the determination of at least one heating zone of the hob 3 can be implemented by means of a single temperature sensor 7 or several temperature sensors 7 depending on the position and the size of the container placed on the cooking plane 3 and detected by means of the inductors 2 and control means of the induction hob 1.
  • the number of temperature sensors 7 detecting the heating zone of the hob 3 corresponding to the heating zone Z1 is four.
  • each inductor group 8 comprises a single temperature sensor 7 measuring the temperature at each inductor 2 of an inductor group 8.
  • this hardware configuration of the induction hob 1 makes it possible, by means of the processing of the temperature data coming from the temperature sensors 7, by the control unit of said table 1 to delimit at least one heating zone of the heating plane. cooking 3 corresponding to at least one heating zone Z1 of a container on the hob 3 at the lowest cost by dividing the number of temperature sensors 7 by the number of inductors 2 constituting each group of inductors 8.
  • the cost of obtaining a matrix type induction cooktop 1 is minimized by reducing the number of temperature sensors 7 necessary for the display of at least one residual heat indicator H on said at least one display means 6 corresponding to at least one heating zone Z1 of a container on the hob 3, and simplifying the connection of these temperature sensors 7 to the control means of the induction hob 1 during the manufacture of it.
  • the determination of at least one heating zone of the hob 3 can be implemented by means of a single temperature sensor 7 or several temperature sensors 7 depending on the position and the size of the container placed on the cooking plane 3 and detected by means of the inductors 2 and control means of the induction hob 1.
  • the number of temperature sensors 7 detecting the heating zone of the hob 3 corresponding to the heating zone Z1 is three.
  • control method may comprise a step of determining at least one temperature sensor 7 covered at least partially by a container placed on the hob 3 during the step of operating the inductors 2 of said at least one heating zone Z1.
  • This information of said at least one temperature sensor 7 is stored by the control unit of the induction hob 1 until the step of stopping the inductors of said at least one heating zone Z1.
  • the control unit of the induction hob 1 controls the display of at least one residual heat indicator H on said at least one display means 6 in place of the graphic object of said at least one heating zone Z1 shown on said at least one display means 6.
  • the induction hob 1 comprises at least one energy meter detecting at least one heating zone of the hob 3.
  • the step of determining an overshoot of a first threshold temperature value is implemented by means of said at least one energy meter, wherein said at least one energy meter determines a level. for heating said at least one heating zone Z1 as a function of at least one operating parameter of at least one inverter supply device.
  • the step of displaying at least one residual heat indicator H on said at least one display means 6 displays the position of said at least one residual heat indicator H on said at least one display means 6 function of the operating data of said at least one inverter supply device read by said at least one energy meter having determined that the first temperature threshold value in the hob 3 has been exceeded.
  • the operating data of said at least one inverter supply device taken up by said at least one energy meter can be, in particular, the operating time of at least one inverter supply device and / or the power delivered to an inductor by at least one inverter supply device so as to determine a heating level of at least one heating zone Z1.
  • the operating data of said at least one inverter supply device read by said at least one energy meter are analyzed by the control unit. of the induction hob 1 so as to determine whether it is necessary to display at least one residual heat indicator H on said at least one display means 6.
  • the operating data of said at least one inverter supply device read by said at least one energy meter can be in the form of digital data for processing by at least one microcontroller of the control unit, where these data operating mode are the image of the temperature present at at least one heating zone in the hob 3.
  • At least one residual heat indicator H must be symbolized on said at least one heating element. display 6.
  • the control method also comprises a step of extinguishing said at least one residual heat indicator H following the determination of crossing a second threshold temperature value at said at least one heating zone in the hob. 3 belonging to said at least one heating zone Z1, where the second temperature threshold value is lower than the first temperature threshold value.
  • the crossing determination of a second temperature threshold value at said at least one heating zone in the hob 3 is implemented by at least one temperature sensor 7 belonging to said at least one heating zone Z1.
  • the temperature data measured by said at least one temperature sensor 7 can be continuously analyzed by the control unit of the induction hob 1 so as to determine when said at least one H residual heat indicator displayed on said at least one display means 6 can be turned off.
  • the residual heat indicator H displayed on said at least one display means 6 is extinguished when the temperature data measured by all these sensors 7 are lower than the second temperature threshold value.
  • the crossing determination of a second threshold temperature value at said at least one heating zone in the hob 3 belonging to said at least one heating zone Z1 is implemented. by the countdown of a predetermined duration through the control means of the induction hob 1, in particular at least one microcontroller, since the determination of an exceeding of the first threshold temperature value at the level of said minus one heating zone in the hob 3 belonging to said at least one heating zone Z1.
  • This predetermined duration may be dependent on the operating time at least one inverter supply device and / or the power delivered to an inductor by at least one inverter supply device.
  • the operating data of said at least one inverter supply device taken up by said at least one energy meter can be analyzed by the control unit of the induction hob 1 following the step of stopping the inductors 2 of said at least one heating zone Z1 so as to determine when said at least one residual heat indicator H displayed on said at least one display means 6 can be extinguished.
  • the first temperature threshold value is of the order of 60 ° C. and the second temperature threshold value is of the order of 50 ° C.
  • This temperature difference between the first temperature threshold value and the second temperature threshold value makes it possible to avoid a possible extinction of the at least one residual heat indicator H, then the re-display thereof, then to again the extinction of it if the monitored temperature oscillates around a single temperature threshold value.
  • the representation of said at least one new heating zone Z2 on said at least one display means 6 at least partially intersects the display of at least one residual heat indicator H on said at least one display means 6, whereas said method comprises a step of extinguishing said at least one control residual heat H then a step of representing said at least one new heating zone Z2 on said at least one display means 6.
  • the at least partial overlapping of a heating zone of the hob 3 by at least one new heating zone Z2 makes it possible to extinguish the display of a residual heat indicator H associated with said heating zone of the plane cooking 3 without major safety risk for the user.
  • the control method comprises a step of displaying said at least one residual heat indicator H on said at least one display means 6 corresponding to the heating zone of the hob 3 where the highest temperature is determined.
  • the at least partial overlapping of a first heating zone of the hob 3 by a second heating zone of the hob 3 makes it possible to extinguish the display of a residual heat indicator H associated with the heating zone 3. heating of the hob 3 having the lowest temperature without major safety risk for the user.
  • 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 implementing the control method in operation of an induction hob according to the invention.
  • control unit controls in particular the inductors 2, and the temperature sensor (s) 7 or the energy meter (s) so as to manage the display and the extinction of at least one residual heat indicator H on said at least one display means 6 at a given position image of the location of at least one container placed on the hob 3 of a matrix-type induction cooktop 1 and previously heated up by a subset of inductors 2 constituting at least one heating zone Z1, wherein said at least one heating zone Z1 constitutes a heating zone of the hob 3, as previously described.
  • the operating control method of a set of inductors of an induction hob makes it possible to clearly and significantly display the display position of at least one residual heat indicator. on at least one display means so as to guarantee the safety of the users by increased readability on said at least one display means.
  • 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.

Description

La présente invention concerne un procédé de commande en fonctionnement d'un ensemble d'inducteurs d'une table de cuisson à induction.The present invention relates to a control method in operation of a set of inductors of an induction hob.

Elle concerne également une table de cuisson à induction, comprenant un ensemble d'inducteurs répartis suivant une trame bidimensionnelle dans un plan de cuisson de ladite table de cuisson à induction, adaptée à mettre en oeuvre le procédé de commande conforme à l'invention.It also relates to an induction hob, comprising a set of inductors distributed in a two-dimensional grid in a hob of said induction hob, adapted to implement the control method according to the invention.

Plus particulièrement, l'invention concerne la commande en fonctionnement des inducteurs dans une table de cuisson à induction n'ayant pas de zones de chauffe prédéfinies.More particularly, the invention relates to the control in operation of the inductors in an induction hob having no predefined heating zones.

On connaît déjà dans les tables de cuisson à induction comprenant des foyers de cuisson indépendants dont le nombre, la position et la dimension des foyers de cuisson sont définis par le fabricant de tables de cuisson à induction. Les foyers de cuisson sont symbolisés sur le plan de cuisson des tables de cuisson à induction par un marquage réalisé par sérigraphie.Induction hobs with independent cooking hobs are already known, the number, position and size of hobs being defined by the induction hob manufacturer. The cooking hobs are symbolized on the hob of the induction hobs by a marking made by screen printing.

Chaque foyer de cuisson est associé respectivement à un ou plusieurs éléments d'affichage des moyens de commande.Each cooking zone is respectively associated with one or more display elements of the control means.

Les données nécessaires à la commande d'un des foyers de cuisson sont affichées au moyen de ce ou ces éléments d'affichage respectifs.The data required to control one of the cooking stoves are displayed by means of this or these respective display elements.

De même, les données de sécurité associées respectivement à chaque foyer de cuisson, tel que le témoin de chaleur résiduelle, sont affichées dans le ou les éléments d'affichage associés à chaque foyer de cuisson.Likewise, the safety data associated with each cooking stove, such as the residual heat indicator, are displayed in the display element or elements associated with each cooking zone.

Ainsi, l'association d'un témoin de chaleur résiduelle à une zone d'échauffement sur le plan de cuisson caractérisée par un foyer de cuisson est immédiate.Thus, the combination of a residual heat indicator to a heating zone on the cooking surface characterized by a cooking zone is immediate.

Cependant, dans une table de cuisson à induction comprenant des inducteurs disposés de façon matricielle dans le plan de cuisson, chaque zone de chauffe est constituée au cas par cas en fonction de la position et de la taille du récipient placé sur le plan de cuisson en vis-à-vis d'un sous-ensemble d'inducteurs.However, in an induction hob comprising inductors arranged in a matrix manner in the hob, each heating zone is constituted case by case depending on the position and the size of the container placed on the cooking surface. vis-à-vis a subset of inductors.

Il est nécessaire de commander ensuite chaque sous-ensemble d'inducteurs d'une zone de chauffe en fonction d'une puissance de consigne demandée par l'utilisateur pour la chauffe du récipient disposé sur la zone de chauffe.It is necessary to control each subset of inductors of a heating zone according to a desired power required by the user for heating the container disposed on the heating zone.

Classiquement, chaque inducteur est alimenté par un dispositif d'alimentation à onduleur, mettant notamment en oeuvre un interrupteur de puissance du type transistor bipolaire tel qu'un transistor IGBT (acronyme du terme anglo-saxon « Insulated Gate Bipolar Transistor ») ou un transistor MOS (acronyme du terme anglo-saxon « Metal Oxyde Semiconductor »).Conventionally, each inductor is powered by an inverter supply device, including implementing a power switch of the bipolar transistor type such as an IGBT transistor (acronym for the term "Insulated Gate Bipolar Transistor") or a transistor MOS (acronym for the term "Metal Oxide Semiconductor").

Sur une telle table de cuisson à induction de type matricielle, le nombre, la position et la dimension des zones de chauffe ne sont ni délimitées ni définies sur le plan de cuisson de ladite table de sorte à augmenter la souplesse d'utilisation de celle-ci.On such a matrix-type induction hob, the number, the position and the size of the heating zones are neither delimited nor defined on the plane of heating. cooking said table so as to increase the flexibility of use thereof.

La position d'au moins une zone de chauffe sur le plan de cuisson d'une table de cuisson à induction de type matricielle peut donc être aléatoire. Et par conséquent, la représentation de ladite au moins une zone de chauffe sur un moyen d'affichage, tel qu'un afficheur de type graphique, peut également être aléatoire.The position of at least one heating zone on the hob of a matrix-type induction hob may therefore be random. And therefore, the representation of said at least one heating zone on a display means, such as a graphical display, may also be random.

A chaque position possible d'un récipient sur le plan de cuisson d'une table de cuisson à induction de type matricielle, une zone de chauffe ne correspond pas à un ou plusieurs éléments d'affichage respectifs sur le moyen d'affichage puisque chaque zone de chauffe peut prendre une multitude de positions sur le plan de cuisson.At each possible position of a container on the hob of a matrix-type induction hob, a heating zone does not correspond to one or more respective display elements on the display means since each zone can take a multitude of positions on the hob.

Par conséquent, l'association d'un témoin de chaleur résiduelle à une zone d'échauffement sur le plan de cuisson d'une table de cuisson à induction de type matricielle n'est pas aisée à mettre en oeuvre, et ne peut pas être réalisée suivant le mode de fonctionnement des tables de cuisson à induction à foyers de cuisson indépendants et définis sur le plan de cuisson.Therefore, the association of a residual heat indicator with a heating zone on the hob of a matrix-type induction hob is not easy to implement, and can not be realized according to the operating mode of induction cooktops with independent cooking hobs and defined on the hob.

On connaît également les documents FR 2 863 039 A1 , WO 97/37515 A1 et WO 2009/053279 A1 qui décrivent une table de cuisson à induction où les inducteurs sont répartis suivant une trame bidimensionnelle dans un plan de cuisson de la table de cuisson à induction. La table de cuisson à induction est adaptée à détecter au moins une zone de chauffe constituée d'un sous-ensemble d'inducteurs recouverts au moins partiellement par un récipient, à représenter ladite au moins une zone de chauffe sur au moins un moyen d'affichage, à mettre en fonctionnement des inducteurs de ladite au moins une zone de chauffe, et à arrêter des inducteurs de ladite au moins une zone de chauffe.The documents are also known FR 2 863 039 A1 , WO 97/37515 A1 and WO 2009/053279 A1 which describe an induction hob where the inductors are distributed in a two-dimensional grid in a hob of the induction hob. The induction hob is adapted to detect at least one heating zone consisting of a subset of inductors at least partially covered by a container, to represent the at least one heating zone on at least one means of heating. display, to operate inductors of said at least one heating zone, and to stop inductors of said at least one heating zone.

On connaît également le document DE 10 2007 057 332 A1 qui décrit une table de cuisson comprenant des foyers de cuisson indépendants dont le nombre, la position et la dimension des foyers de cuisson sont prédéfinis. Les foyers de cuisson sont symbolisés sur le plan de cuisson de la table de cuisson. Chaque foyer de cuisson est associé respectivement à un élément d'affichage d'un afficheur. Les données nécessaires à la commande d'un des foyers de cuisson sont affichées au travers de l'élément d'affichage associé à un foyer de cuisson. De même, les données de sécurité associées respectivement à chaque foyer de cuisson, tel que le témoin de chaleur résiduelle, sont affichées dans l'élément d'affichage associé à un foyer de cuisson.The document is also known DE 10 2007 057 332 A1 which describes a hob comprising independent cooking hobs whose number, position and size of the cooking hobs are predefined. The cooking hobs are symbolized on the hob of the hob. Each cooking zone is respectively associated with a display element of a display. The data required to control one of the cooking stoves is displayed through the display element associated with a cooking zone. Likewise, the security data associated with each cooking zone, such as the residual heat indicator, are displayed in the display element associated with a cooking zone.

On connaît également le document EP 1 978 784 A1 qui décrit une table de cuisson où les éléments chauffant sont répartis suivant une trame bidimensionnelle dans un plan de cuisson de la table de cuisson. Et une unité de commande permet de déterminer un dépassement d'une première valeur seuil de température au niveau d'au moins une zone d'échauffement dans le plan de cuisson. Puis, une indication peut être affichée sur un afficheur pour prévenir l'utilisateur qu'un dépassement d'une première valeur seuil de température au niveau d'au moins une zone d'échauffement a été détecté. Ladite au moins une zone d'échauffement détectée correspond à au moins une zone où la température estimée selon un modèle mathématique, prenant en compte notamment la puissance de chauffe et la durée de chauffe des éléments chauffant, dépasse une valeur seuil de température.The document is also known EP 1 978 784 A1 which describes a hob where the heating elements are distributed in a two-dimensional grid in a hob of the hob. And a control unit makes it possible to determine an exceeding of a first threshold temperature value at at least one heating zone in the hob. Then, an indication can be displayed on a display to warn the user that an exceeding of a first threshold temperature value in at least one heating zone has been detected. Said at least one detected heating zone corresponds to at least one zone where the temperature estimated according to a mathematical model, taking into account in particular the heating power and the heating time of the heating elements, exceeds a threshold temperature value.

La présente invention a pour but de résoudre les inconvénients précités et de proposer un procédé de commande en fonctionnement d'un ensemble d'inducteurs d'une table de cuisson à induction, et une table de cuisson à induction associée, permettant de gérer de manière sécuritaire avec au moins un moyen d'affichage l'affichage et l'extinction d'au moins un témoin de chaleur résiduelle engendré par un échauffement du plan de cuisson au niveau d'au moins une zone de chauffe d'un récipient posé sur le plan de cuisson de la table de cuisson à induction du type matricielle de sorte à avertir et protéger les utilisateurs.The present invention aims to solve the aforementioned drawbacks and to provide a control method in operation of a set of inductors of an induction hob, and an associated induction hob, for managing in a manner secure with at least one display means the display and the extinction of at least one residual heat indicator generated by a heating of the hob at at least one heating zone of a container placed on the hob of the induction cooktop of the matrix type so as to warn and protect users.

A cet effet, la présente invention vise, selon un premier aspect, un procédé de commande en fonctionnement d'un ensemble d'inducteurs d'une table de cuisson à induction, lesdits inducteurs étant répartis suivant une trame bidimensionnelle dans un plan de cuisson de ladite table de cuisson à induction, et chaque inducteur étant alimenté par un dispositif d'alimentation à onduleur, lesdits inducteurs formant moyens de chauffage d'un récipient et moyens de détection de la présence d'un récipientFor this purpose, the present invention aims, in a first aspect, a control method in operation of a set of inductors of an induction hob, said inductors being distributed in a two-dimensional grid in a cooking hob of said induction hob, and each inductor being powered by an inverter supply device, said inductors forming means for heating a container and means for detecting the presence of a container

Le procédé de commande comprend au moins les étapes suivantes :

  • détection d'au moins une zone de chauffe constituée d'un sous-ensemble d'inducteurs recouverts au moins partiellement par un récipient ;
  • représentation de ladite au moins une zone de chauffe sur au moins un moyen d'affichage ;
  • mise en fonctionnement des inducteurs de ladite au moins une zone de chauffe ;
  • arrêt des inducteurs de ladite au moins une zone de chauffe ;
  • suite à l'arrêt des inducteurs de ladite au moins une zone de chauffe, détermination d'un dépassement d'une première valeur seuil de température au niveau d'au moins une zone d'échauffement dans ledit plan de cuisson appartenant à ladite au moins une zone de chauffe.
The control method comprises at least the following steps:
  • detecting at least one heating zone consisting of a subset of inductors at least partially covered by a receptacle;
  • representing said at least one heating zone on at least one display means;
  • operating the inductors of said at least one heating zone;
  • stopping the inductors of said at least one heating zone;
  • following the stopping of the inductors of the said at least one heating zone, determination of an exceeding of a first threshold temperature value at at least one heating zone in the said cooking plane belonging to the said at least one heating zone; a heating zone.

Selon l'invention, le procédé comprend également au moins l'étape suivante :

  • affichage d'au moins un témoin de chaleur résiduelle sur ledit au moins un moyen d'affichage,
  • où la position dudit au moins un témoin de chaleur résiduelle sur ledit au moins un moyen d'affichage est dépendante de la position de ladite au moins une zone d'échauffement détectée dans ledit plan de cuisson, et
  • où suite à une détection d'au moins une nouvelle zone de chauffe constituée d'un sous-ensemble d'inducteurs recouverts au moins partiellement par un récipient, si la représentation de ladite au moins une nouvelle zone de chauffe sur ledit au moins un moyen d'affichage recoupe au moins partiellement l'affichage d'au moins un témoin de chaleur résiduelle sur ledit au moins un moyen d'affichage, alors ledit procédé comprend une étape d'extinction dudit au moins un témoin de chaleur résiduelle puis une étape de représentation de ladite au moins une nouvelle zone de chauffe sur ledit au moins un moyen d'affichage.
According to the invention, the method also comprises at least the following step:
  • displaying at least one residual heat indicator on said at least one display means,
  • wherein the position of said at least one residual heat indicator on said at least one display means is dependent on the position of said at least one minus a heating zone detected in said hob, and
  • where following detection of at least one new heating zone consisting of a subset of inductors at least partially covered by a container, if the representation of said at least one new heating zone on said at least one means display at least partially intersects the display of at least one residual heat indicator on said at least one display means, then said method comprises a step of extinguishing said at least one residual heat indicator and then a step of representing said at least one new heating zone on said at least one display means.

Ainsi, le procédé de commande en fonctionnement d'un ensemble d'inducteurs d'une table de cuisson à induction permet d'afficher de manière claire et significative la position d'affichage d'au moins un témoin de chaleur résiduelle sur au moins un moyen d'affichage de sorte à garantir la sécurité des utilisateurs.Thus, the operating control method of a set of inductors of an induction hob makes it possible to clearly and significantly display the display position of at least one residual heat indicator on at least one means of display so as to guarantee the safety of users.

Ce procédé de commande en fonctionnement d'un ensemble d'inducteurs d'une table de cuisson à induction permet d'afficher de manière la plus réelle possible au moins une zone d'échauffement du plan de cuisson sur ledit au moins un moyen d'affichage.This operating method of operating a set of inductors of an induction hob makes it possible to display as realistically as possible at least one heating zone of the hob on said at least one means of cooking. display.

L'étape de détection d'au moins une zone de chauffe constituée d'un sous-ensemble d'inducteurs recouverts au moins partiellement par un récipient permet de déterminer la présence ou non d'un ou plusieurs récipients sur le plan de cuisson de la table de cuisson à induction de type matricielle.The step of detecting at least one heating zone consisting of a subset of inductors covered at least partially by a receptacle makes it possible to determine the presence or absence of one or more receptacles on the cooking surface of the cooking chamber. matrix-type induction hob.

L'étape de représentation de ladite au moins une zone de chauffe sur au moins un moyen d'affichage permet de visualiser sur ledit au moins un moyen d'affichage le positionnement du ou des récipients détectés préalablement.The step of representing said at least one heating zone on at least one display means makes it possible to display on said at least one display means the positioning of the container or containers previously detected.

Ensuite, l'étape de mise en fonctionnement des inducteurs de ladite au moins une zone de chauffe est mise en oeuvre pour chaque récipient détecté et commandé par au moins une consigne de puissance.Then, the step of operating the inductors of said at least one heating zone is implemented for each container detected and controlled by at least one power setpoint.

La mise en fonctionnement des inducteurs de la zone de chauffe associée à chaque récipient détecté et commandé provoque une zone d'échauffement à l'emplacement du ou des récipients concernés sur le plan de cuisson de la table de cuisson à induction de type matricielle.The operation of the inductors of the heating zone associated with each detected and controlled receptacle causes a heating zone to the location of the container (s) concerned on the hob of the matrix-type induction hob.

L'étape d'arrêt des inducteurs de ladite au moins une zone de chauffe est mise en oeuvre après une durée programmée écoulée ou par une commande d'arrêt de ladite au moins une zone de chauffe.The step of stopping the inductors of said at least one heating zone is implemented after a programmed elapsed time or by a stop command of said at least one heating zone.

La présence de la ou des zones d'échauffement à l'emplacement du ou des récipients concernés sur le plan de cuisson de la table de cuisson à induction de type matricielle est à signaler à l'utilisateur de sorte à garantir sa sécurité.The presence of the heating zone (s) at the location of the container (s) concerned on the hob of the matrix-type induction hob must be signaled to the user so as to guarantee its safety.

Suite à cette étape d'arrêt des inducteurs de ladite au moins une zone de chauffe, le procédé met en oeuvre l'étape de détermination d'un dépassement d'une première valeur seuil de température au niveau d'au moins une zone d'échauffement dans ledit plan de cuisson appartenant à ladite au moins une zone de chauffe.Following this step of stopping the inductors of said at least one heating zone, the method implements the step of determining an exceeding of a first threshold temperature value at at least one zone of heating in said hob belonging to said at least one heating zone.

Cette étape de détermination d'un dépassement d'une première valeur seuil de température dans le plan de cuisson permet de déterminer la présence de la ou des zones d'échauffement à l'emplacement du ou des récipients concernés sur le plan de cuisson de la table de cuisson à induction de type matricielle.This step of determining an exceeding of a first threshold temperature value in the hob can determine the presence of the heating zone (s) at the location of the container (s) concerned on the cooking surface of the cooking zone. matrix-type induction hob.

Puis, le procédé met en oeuvre l'étape d'affichage d'au moins un témoin de chaleur résiduelle sur ledit au moins un moyen d'affichage, où la position dudit au moins un témoin de chaleur résiduelle sur ledit au moins un moyen d'affichage est dépendante de la position de ladite au moins une zone d'échauffement détectée dans le plan de cuisson.Then, the method implements the step of displaying at least one residual heat indicator on said at least one display means, wherein the position of said at least one residual heat indicator on said at least one means for displaying display is dependent on the position of said at least one heating zone detected in the hob.

Cette étape d'affichage d'au moins un témoin de chaleur résiduelle sur ledit au moins un moyen d'affichage permet d'afficher avec précision la position réelle d'au moins une zone d'échauffement du plan de cuisson de la table de cuisson à induction du type matricielle sur ledit au moins un moyen d'affichage au moyen d'au moins un témoin de chaleur résiduelle.This step of displaying at least one residual heat indicator on said at least one display means makes it possible to accurately display the actual position of at least one heating zone of the hob of the hob. matrix-type induction on said at least one display means by means of at least one residual heat indicator.

Selon une caractéristique préférée de l'invention, ledit au moins un témoin de chaleur résiduelle est affiché au même emplacement que la représentation de ladite au moins une zone de chauffe sur ledit au moins un moyen d'affichage dès qu'un dépassement de ladite première valeur seuil de température est détecté au niveau de ladite au moins une zone de chauffe.According to a preferred characteristic of the invention, said at least one residual heat indicator is displayed at the same location as the representation of said at least one heating zone on said at least one display means as soon as an exceeding of said first temperature threshold value is detected at said at least one heating zone.

Ainsi, la position affichée d'au moins un témoin de chaleur résiduelle sur ledit au moins un moyen d'affichage correspond à la position réelle d'au moins une zone d'échauffement du plan de cuisson de la table de cuisson à induction du type matricielle puisque ladite position affichée correspond à la position d'au moins une zone de chauffe d'un récipient posé sur le plan de cuisson, et non à la position d'un capteur de température situé à l'intérieur du plan de cuisson.Thus, the displayed position of at least one residual heat indicator on said at least one display means corresponds to the actual position of at least one heating zone of the hob of the type induction hob. matrix since said displayed position corresponds to the position of at least one heating zone of a container placed on the hob, and not to the position of a temperature sensor located inside the hob.

Pratiquement, ledit procédé comprend une étape de détermination des coordonnées représentant ladite au moins une zone de chauffe sur ledit au moins un moyen d'affichage lors de l'étape de détection de ladite au moins une zone de chauffe sur ledit plan de cuisson, et une étape d'affectation desdites coordonnées représentant ladite au moins une zone de chauffe sur ledit au moins un moyen d'affichage aux coordonnées de positionnement dudit au moins un témoin de chaleur résiduelle sur ledit au moins un afficheur dès qu'un dépassement de ladite première valeur seuil de température est détecté au niveau de ladite au moins une zone de chauffe.Practically, said method comprises a step of determining the coordinates representing said at least one heating zone on said at least one display means during the step of detecting said at least one heating zone on said hob, and a step of assigning said coordinates representing said at least one heating zone on said at least one display means to the positioning coordinates of said at least one residual heat indicator on said at least one display as soon as an exceeding of said first temperature threshold value is detected at said at least one heating zone.

La présente invention vise, selon un second aspect, une table de cuisson à induction, comprenant un ensemble d'inducteurs répartis suivant une trame bidimensionnelle dans un plan de cuisson de ladite table de cuisson à induction, chaque inducteur étant alimenté par un dispositif d'alimentation à onduleur.The present invention aims, in a second aspect, an induction hob, comprising a set of inductors distributed in a two-dimensional grid in a cooking plane of said induction hob, each inductor being powered by a device of inverter power supply.

Selon l'invention, la table de cuisson à induction comprend des moyens de commande adaptés à mettre en oeuvre le procédé de commande.According to the invention, the induction hob includes control means adapted to implement the control method.

Cette table de cuisson à induction présente des caractéristiques et avantages analogues à ceux décrits précédemment en relation avec le procédé de commande selon l'invention.This induction hob has characteristics and advantages similar to those described above in relation to the control method according to the invention.

D'autres particularités et avantages de l'invention apparaîtront encore dans la description ci-après.Other features and advantages of the invention will become apparent in the description below.

Aux dessins annexés, donnés à titre d'exemples non limitatifs :

  • la figure 1 est une vue schématique de dessus illustrant une table de cuisson à induction conforme à un premier mode de réalisation de l'invention ; et
  • la figure 2 est une vue schématique de dessus illustrant une table de cuisson à induction conforme à un deuxième mode de réalisation de l'invention.
In the accompanying drawings, given as non-limiting examples:
  • the figure 1 is a schematic top view illustrating an induction hob according to a first embodiment of the invention; and
  • the figure 2 is a schematic top view illustrating an induction hob according to a second embodiment of the invention.

On va décrire tout d'abord, en référence aux figures 1 et 2, une table de cuisson à induction adaptée à mettre en oeuvre le procédé de commande en fonctionnement d'un ensemble d'inducteurs conforme à un mode de réalisation de l'invention.We will first describe, with reference to Figures 1 and 2 , an induction hob adapted to implement the control method in operation of a set of inductors according to an embodiment of the invention.

La table de cuisson 1 comprend des moyens de chauffage constitués par un ensemble d'inducteurs 2. Ces inducteurs 2 sont répartis suivant une trame bidimensionnelle dans un plan de cuisson 3 de la table de cuisson à induction 1.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.

Dans le mode de réalisation illustré aux figures 1 et 2, la table de cuisson à induction 1 comprend une pluralité d'inducteurs 2 élémentaires disposés sous le plan de cuisson 3 de façon à couvrir toute la surface de ce dernier.In the embodiment illustrated in Figures 1 and 2 , 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.

A titre d'exemple non limitatif, les inducteurs 2 sont ici de forme circulaire et de diamètre égal, pouvant être de l'ordre de 80 millimètres.By way of non-limiting example, the inductors 2 are here of circular shape and of equal diameter, which can be of the order of 80 millimeters.

Bien entendu, les inducteurs peuvent être de forme et de taille différentes, tel que par exemple triangulaire, rectangulaire, ou octogonale.Of course, the inductors can be of different shape and size, such as for example triangular, rectangular, or octagonal.

Dans un mode de réalisation, les inducteurs 2 sont disposés en ligne selon une direction, par exemple horizontale tel qu'illustré aux figures 1 et 2, et les inducteurs 2 de chaque ligne sont eux-mêmes disposés en quinconce avec les inducteurs 2 des lignes adjacentes de sorte à couvrir au mieux le plan de cuisson 3.In one embodiment, the inductors 2 are arranged in line in a direction, for example horizontal as illustrated in FIGS. Figures 1 and 2 , and the inductors 2 of each line are themselves arranged in staggered rows with the inductors 2 of the adjacent lines so as to best cover the hob 3.

Bien entendu, la disposition des inducteurs dans le plan de cuisson n'est nullement limitative et peut être différente.Of course, the arrangement of the inductors in the hob is not limiting and may be different.

Le plan de cuisson 3 ainsi formé par l'intermédiaire des inducteurs 2 peut être de toute forme, et par exemple rectangulaire tel qu'illustré aux figures 1 et 2.The hob 3 thus formed via the inductors 2 can be of any shape, for example rectangular as illustrated in FIGS. Figures 1 and 2 .

Bien entendu, la forme du plan de cuisson n'est nullement limitative et peut être différente, notamment carré, circulaire ou ovale.Of course, the shape of the hob is not limiting and may be different, including square, circular or oval.

Une telle table de cuisson à induction 1 ne comporte pas de zones de chauffe délimitées prédéfinies, chaque zone de chauffe étant déterminée au cas par cas en fonction de la position et de la taille d'un récipient posé sur le plan de cuisson 3 et recouvrant un sous-ensemble d'inducteurs 2.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.

Chaque inducteur 2 peut être alimenté de manière classique par un dispositif d'alimentation à onduleur (non représenté), composé d'une structure électronique de puissance en demi-pont ou d'une structure d'électronique de puissance en circuit quasi résonnant.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.

Il n'est pas nécessaire ici de décrire plus en détail le dispositif d'alimentation à onduleur bien connu pour l'alimentation des inducteurs d'une table de cuisson à induction.There is no need here to describe in more detail the well-known inverter feeder for feeding inductors of an induction cooktop.

Dans ce type de table de cuisson à induction, il est nécessaire de pouvoir détecter automatiquement le ou les récipients posés sur le plan de cuisson 3 de sorte à alimenter en énergie électrique uniquement les inducteurs 2 disposés sous les récipients.In this type of induction hob, it is necessary to be able to automatically detect the container or containers placed on the hob 3 so as to supply electrical energy only inductors 2 arranged under the containers.

Il est connu à cet effet d'utiliser les inducteurs 2 comme moyens de détection de présence de récipient.It is known for this purpose to use the inductors 2 as container presence detection means.

A titre d'exemple nullement limitatif, la détection de présence de récipient peut être mise en oeuvre par la mesure de courant efficace passant dans chaque inducteur 2 puisque celle-ci est dépendante de la surface recouverte dudit inducteur 2 par un récipient.By way of non-limiting example, 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.

Les inducteurs 2 constituent ainsi à la fois les moyens de chauffage d'un récipient et les moyens de détection de la présence d'un récipient.The inductors 2 thus constitute both the heating means of a container and the means for detecting the presence of a container.

Les moyens de commande (non représentés) de la table de cuisson à induction 1, comportant au moins un ou plusieurs microcontrôleurs, sont aptes à contrôler un ou plusieurs récipients posés sur le plan de cuisson 3 et appliquer des puissances de fonctionnement, à chaque zone de chauffe, différentes ou identiques qui sont dépendantes de la puissance de consigne demandée par l'utilisateur pour chaque récipient.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. of heating, different or identical that are depending on the user-requested setpoint power for each container.

La table de cuisson à induction 1 comprend un clavier de commande 4 comportant au moins des moyens de sélection 5, tel que par exemple des touches sensitives ou un écran tactile, et des moyens d'affichage 6, tel que par exemple un ou plusieurs voyants réalisés au moyen de diodes électroluminescentes et/ou un ou plusieurs afficheurs pouvant être du type LCD (acronyme du terme anglais Liquid Crystal Display).The induction hob 1 comprises a control keyboard 4 comprising at least selection means 5, such as for example touch keys or a touch screen, and display means 6, such as for example one or more lights made by means of light-emitting diodes and / or one or more displays that can be of the LCD type (acronym for the term Liquid Crystal Display).

On va décrire à présent le procédé de commande en fonctionnement d'un ensemble d'inducteurs d'une table de cuisson à induction mis en oeuvre par les moyens de commande de la table de cuisson à induction permettant de gérer de manière sécuritaire avec au moins un moyen d'affichage l'affichage et l'extinction d'au moins un témoin de chaleur résiduelle engendré par un échauffement du plan de cuisson au niveau d'au moins une zone de chauffe d'un récipient posé sur le plan de cuisson de la table de cuisson à induction du type matricielle de sorte à avertir et protéger les utilisateurs.We will now describe the control method in operation of a set of inductors of an induction hob implemented by the control means of the induction hob to manage safely with at least display means displaying and extinguishing at least one residual heat indicator generated by a heating of the hob at at least one heating zone of a container placed on the hob of the induction cooktop of the matrix type so as to warn and protect the users.

Le procédé de commande comprend au moins les étapes suivantes :

  • détection d'au moins une zone de chauffe Z1 constituée d'un sous-ensemble d'inducteurs 2 recouverts au moins partiellement par un récipient ;
  • représentation de ladite au moins une zone de chauffe Z1 sur au moins un moyen d'affichage 6 ;
  • mise en fonctionnement des inducteurs 2 de ladite au moins une zone de chauffe Z1 ;
  • arrêt des inducteurs 2 de ladite au moins une zone de chauffe Z1 ;
  • suite à l'arrêt des inducteurs 2 de ladite au moins une zone de chauffe Z1, détermination d'un dépassement d'une première valeur seuil de température au niveau d'au moins une zone d'échauffement dans ledit plan de cuisson 3 appartenant à ladite au moins une zone de chauffe Z1.
The control method comprises at least the following steps:
  • detecting at least one heating zone Z1 consisting of a subset of inductors 2 at least partially covered by a receptacle;
  • representing said at least one heating zone Z1 on at least one display means 6;
  • operating inductors 2 of said at least one heating zone Z1;
  • stopping inductors 2 of said at least one heating zone Z1;
  • following the stopping of the inductors 2 of said at least one heating zone Z1, determination of an exceeding of a first threshold temperature value at at least one heating zone in said cooking plane 3 belonging to said at least one heating zone Z1.

L'étape de détection d'au moins une zone de chauffe Z1 constituée d'un sous-ensemble d'inducteurs 2 recouverts au moins partiellement par un récipient permet de déterminer la présence ou non d'un ou plusieurs récipients sur le plan de cuisson 3 de la table de cuisson à induction 1 de type matricielle.The step of detecting at least one heating zone Z1 consisting of a subset of inductors 2 at least partially covered by a container makes it possible to determine the presence or absence of one or more containers on the cooking surface. 3 of the induction cooktop 1 of the matrix type.

L'étape de représentation de ladite au moins une zone de chauffe Z1 sur au moins un moyen d'affichage 6 permet de visualiser sur ledit au moins un moyen d'affichage 7 le positionnement du ou des récipients détectés préalablement.The step of representing said at least one heating zone Z1 on at least one display means 6 makes it possible to display on said at least one display means 7 the positioning of the container or containers previously detected.

Ledit au moins un moyen d'affichage 6 est préférentiellement un afficheur de type graphique, tel que par exemple du type LCD (acronyme du terme anglais Liquid Crystal Display) pouvant être monochrome ou couleur.Said at least one display means 6 is preferably a graphical type of display, such as for example the LCD (acronym for the English term Liquid Crystal Display) which can be monochrome or color.

Bien entendu, le type d'afficheur n'est nullement limitatif et peut être varié.Of course, the type of display is not limiting and can be varied.

Cet afficheur graphique permet la représentation d'objets graphiques, tel que par exemple la ou les zones de chauffe Z1 du plan de cuisson 3, à partir des informations recueillies par une unité de commande de la table de cuisson à induction 1 comprenant au moins un microcontrôleur, où les informations recueillies peuvent comprendre notamment la présence ou non d'un ou plusieurs récipients sur le plan de cuisson 3, la position et/ou la taille du ou des récipients détectés.This graphic display device allows the representation of graphic objects, such as, for example, the heating zone (s) Z1 of the hob 3, from the information collected by a control unit of the induction hob 1 comprising at least one microcontroller, where the information collected may include the presence or absence of one or more containers on the cooking plane 3, the position and / or the size of the container or containers detected.

Le résultat de l'étape de détection d'au moins une zone de chauffe Z1 permet de déterminer les coordonnées de la position d'au moins un récipient sur le plan de cuisson 3 de la table de cuisson à induction 1. Puis ces coordonnées de ladite au moins une zone de chauffe Z1 associée audit au moins un récipient sont transposées dans le repère dudit au moins un moyen d'affichage 6 de sorte à représenter au moins un récipient sur ledit au moins un moyen d'affichage 6 par un objet graphique.The result of the step of detecting at least one heating zone Z1 makes it possible to determine the coordinates of the position of at least one container on the hob 3 of the induction hob 1. Then these coordinates of said at least one heating zone Z1 associated with said at least one container are transposed in the reference of said at least one display means 6 so as to represent at least one container on said at least one display means 6 by a graphic object .

Ensuite, l'étape de mise en fonctionnement des inducteurs 2 de ladite au moins une zone de chauffe Z1 est mise en oeuvre pour chaque récipient détecté et commandé par au moins une consigne de puissance.Then, the step of operating the inductors 2 of said at least one heating zone Z1 is implemented for each container detected and controlled by at least one power setpoint.

La mise en fonctionnement des inducteurs 2 de la zone de chauffe Z1 associée à chaque récipient détecté et commandé provoque une zone d'échauffement à l'emplacement du ou des récipients concernés sur le plan de cuisson 3 de la table de cuisson à induction 1 de type matricielle.The operation of the inductors 2 of the heating zone Z1 associated with each detected and controlled receptacle causes a heating zone at the location of the receptacle (s) concerned on the hob 3 of the induction hob 1 of matrix type.

L'étape d'arrêt des inducteurs 2 de ladite au moins une zone de chauffe Z1 est mise en oeuvre après une durée programmée écoulée ou par une commande d'arrêt de ladite au moins une zone de chauffe Z1.The step of stopping the inductors 2 of said at least one heating zone Z1 is carried out after an elapsed programmed duration or by a stop command of said at least one heating zone Z1.

L'arrêt des inducteurs 2 de ladite au moins une zone de chauffe Z1 peut être commandée manuellement par l'activation d'un des moyens de sélection 5 du clavier de commande 4 en activant une commande d'arrêt de ladite au moins une zone de chauffe Z1.The stop of the inductors 2 of said at least one heating zone Z1 can be manually controlled by the activation of one of the selection means 5 of the control keyboard 4 by activating a stop command of said at least one zone of Z1 heater.

L'arrêt des inducteurs 2 de ladite au moins une zone de chauffe Z1 peut être également commandée automatiquement par le décompte d'une minuterie programmée préalablement, où le décompte de la minuterie est contrôlé par une unité de commande de la table de cuisson à induction 1 comprenant au moins un microcontrôleur. La programmation de la minuterie peut être réalisée au travers des moyens de sélection 5 du clavier de commande 4.The shutdown of the inductors 2 of said at least one heating zone Z1 can also be automatically controlled by the countdown of a previously programmed timer, where the countdown of the timer is controlled by a control unit of the induction cooktop. 1 comprising at least one microcontroller. The programming of the timer can be performed through the selection means 5 of the control keyboard 4.

La présence de la ou des zones d'échauffement à l'emplacement du ou des récipients concernés sur le plan de cuisson 3 de la table de cuisson à induction 1 de type matricielle est à signaler à l'utilisateur de sorte à garantir sa sécurité.The presence of the heating zone or zones at the location of the container or containers concerned on the hob 3 of the induction cooktop 1 of matrix type is to be reported to the user so as to ensure its safety.

Suite à cette étape d'arrêt des inducteurs 2 de ladite au moins une zone de chauffe Z1, le procédé met en oeuvre l'étape de détermination d'un dépassement d'une première valeur seuil de température au niveau d'au moins une zone d'échauffement dans ledit plan de cuisson 3 appartenant à ladite au moins une zone de chauffe Z1.Following this step of stopping inductors 2 of said at least one zone of Z1 heating, the method implements the step of determining an exceeding of a first threshold temperature value at at least one heating zone in said cooking plane 3 belonging to said at least one zone of heating. Z1 heater.

Cette étape de détermination d'un dépassement d'une première valeur seuil de température dans le plan de cuisson 3 permet de déterminer la présence de la ou des zones d'échauffement à l'emplacement du ou des récipients concernés sur le plan de cuisson 3 de la table de cuisson à induction 1 de type matricielle.This step of determining an overrun of a first temperature threshold value in the hob 3 makes it possible to determine the presence of the heating zone or zones at the location of the container (s) concerned on the hob 3 induction cooktop 1 of the matrix type.

Le procédé de commande comprend également au moins l'étape suivante :

  • affichage d'au moins un témoin de chaleur résiduelle H sur ledit au moins un moyen d'affichage 6, où la position dudit au moins un témoin de chaleur résiduelle H sur ledit au moins un moyen d'affichage 6 est dépendante de la position de ladite au moins une zone d'échauffement détectée dans le plan de cuisson 3.
The control method also comprises at least the following step:
  • displaying at least one residual heat indicator H on said at least one display means 6, wherein the position of said at least one residual heat indicator H on said at least one display means 6 is dependent on the position of said at least one heating zone detected in the hob 3.

Ainsi, le procédé de commande en fonctionnement d'un ensemble d'inducteurs 2 d'une table de cuisson à induction 1 permet d'afficher de manière claire et significative la position d'affichage d'au moins un témoin de chaleur résiduelle H sur au moins un moyen d'affichage 6 de sorte à garantir la sécurité des utilisateurs.Thus, the operating control method of a set of inductors 2 of an induction cooktop 1 makes it possible to clearly and significantly display the display position of at least one residual heat indicator H on at least one display means 6 so as to guarantee the safety of the users.

Ce procédé de commande en fonctionnement d'un ensemble d'inducteurs 2 d'une table de cuisson à induction 1 permet d'afficher de manière la plus réelle possible au moins une zone d'échauffement du plan de cuisson 3 sur ledit au moins un moyen d'affichage 6.This control method in operation of a set of inductors 2 of an induction hob 1 makes it possible to display as realistically as possible at least one heating zone of the hob 3 on said at least one display medium 6.

Suite à l'étape de détermination d'un dépassement d'une première valeur seuil de température dans le plan de cuisson 3, le procédé de commande met en oeuvre l'étape d'affichage d'au moins un témoin de chaleur résiduelle H sur ledit au moins un moyen d'affichage 6, où la position dudit au moins un témoin de chaleur résiduelle H sur ledit au moins un moyen d'affichage 6 est dépendante de la position de ladite au moins une zone d'échauffement détectée dans le plan de cuisson 3.Following the step of determining an exceeding of a first threshold temperature value in the hob 3, the control method implements the step of displaying at least one residual heat indicator H on the hob 3 said at least one display means 6, wherein the position of said at least one residual heat indicator H on said at least one display means 6 is dependent on the position of said at least one heating zone detected in the plane cooking 3.

Cette étape d'affichage d'au moins un témoin de chaleur résiduelle H sur ledit au moins un moyen d'affichage 6 permet d'afficher avec précision la position réelle d'au moins une zone d'échauffement du plan de cuisson 3 de la table de cuisson à induction 1 du type matricielle sur ledit au moins un moyen d'affichage 6 au moyen d'au moins un témoin de chaleur résiduelle H.This step of displaying at least one residual heat indicator H on said at least one display means 6 makes it possible to accurately display the actual position of at least one heating zone of the hob 3 of the induction cooktop 1 of the matrix type on said at least one display means 6 by means of at least one residual heat indicator H.

Ledit au moins un moyen d'affichage 6 permet d'afficher autant de témoins de chaleur résiduelle H que de zones d'échauffement du plan de cuisson 3 détectées.Said at least one display means 6 makes it possible to display as many residual heat lamps H as detected heating zones of the hob 3.

Pratiquement, le procédé comprend une étape de détermination des coordonnées représentant ladite au moins une zone de chauffe Z1 sur ledit au moins un moyen d'affichage 6 lors de l'étape de détection de ladite au moins une zone de chauffe Z1 sur le plan de cuisson 3, et une étape d'affectation desdites coordonnées représentant ladite au moins une zone de chauffe Z1 sur ledit au moins un moyen d'affichage 6 aux coordonnées de positionnement dudit au moins un témoin de chaleur résiduelle H sur ledit au moins un afficheur 6 dès qu'un dépassement de ladite première valeur seuil de température est détecté au niveau de ladite au moins une zone de chauffe Z1.In practice, the method comprises a step of determining the coordinates representing said at least one heating zone Z1 on said at least one display means 6 during the step of detecting said at least one heating zone Z1 on the hob 3, and a step of assigning said coordinates representing said at least one heating zone Z1 to said at least one display means 6 at the positioning coordinates of said at least one residual heat indicator H on said at least one display 6 as soon as an exceeding of said first threshold temperature value is detected at said at least one heating zone Z1.

Dans un mode de réalisation, la table de cuisson à induction 1 comprend une pluralité de capteurs de température 7 dans le plan de cuisson 3 détectant au moins une zone d'échauffement dudit plan de cuisson 3.In one embodiment, the induction hob 1 comprises a plurality of temperature sensors 7 in the hob 3 detecting at least one heating zone of said hob 3.

Dans ce mode de réalisation, l'étape de détermination d'un dépassement d'une première valeur seuil de température est mise en oeuvre au moyen d'au moins un capteur de température 7 dans le plan de cuisson 3, où ledit au moins un capteur de température 7 est recouvert au moins partiellement par un récipient mis en chauffe lors de l'étape de mise en fonctionnement des inducteurs 2 de ladite au moins une zone de chauffe Z1.In this embodiment, the step of determining an overshoot of a first threshold temperature value is implemented by means of at least one temperature sensor 7 in the hob 3, where the at least one temperature sensor 7 is at least partially covered by a heated container during the step of operating the inductors 2 of said at least one heating zone Z1.

Et l'étape d'affichage d'au moins un témoin de chaleur résiduelle H sur ledit au moins un moyen d'affichage 6 affiche la position dudit au moins un témoin de chaleur résiduelle H sur ledit au moins un moyen d'affichage 6 en fonction de la position dudit au moins un capteur de température 7 ayant détecté le dépassement de la première valeur seuil de température dans le plan de cuisson 3.And the step of displaying at least one residual heat indicator H on said at least one display means 6 displays the position of said at least one residual heat indicator H on said at least one display means 6 function of the position of said at least one temperature sensor 7 having detected the exceeding of the first temperature threshold value in the hob 3.

Suite à l'arrêt des inducteurs 2 de ladite au moins une zone de chauffe Z1, les données de température mesurées par les capteurs de température 7 sont analysées par l'unité de commande de la table de cuisson à induction 1 de sorte à déterminer s'il est nécessaire d'afficher au moins un témoin de chaleur résiduelle H sur ledit au moins un moyen d'affichage 6.Following the stopping of the inductors 2 of said at least one heating zone Z1, the temperature data measured by the temperature sensors 7 are analyzed by the control unit of the induction hob 1 so as to determine it is necessary to display at least one residual heat indicator H on said at least one display means 6.

Les données de température mesurées par les capteurs de température 7 peuvent se présenter sous forme de données numériques pour leur traitement par au moins un microcontrôleur de l'unité de commande, où ces données de température sont l'image de la température présente au niveau d'au moins une zone d'échauffement dans le plan de cuisson 3.The temperature data measured by the temperature sensors 7 can be in the form of digital data for their processing by at least one microcontroller of the control unit, where these temperature data are the image of the temperature present at the temperature level. at least one heating zone in the hob 3.

Si la température présente au niveau d'au moins un capteur de température 7 dépasse au moins une première valeur seuil de température, alors au moins un témoin de chaleur résiduelle H doit être symbolisé sur ledit au moins un moyen d'affichage 6.If the temperature present at at least one temperature sensor 7 exceeds at least a first threshold temperature value, then at least one residual heat indicator H must be symbolized on said at least one display means 6.

Dans un premier cas de fonctionnement, ledit au moins un témoin de chaleur résiduelle H est affiché sur ledit au moins un moyen d'affichage 6 à la position correspondante d'au moins un capteur de température 7 dans le plan de cuisson 3 dès que ledit au moins un capteur de température 7 appartenant à ladite au moins une zone de chauffe Z1 détecte le dépassement de ladite première valeur seuil de température.In a first case of operation, said at least one residual heat indicator H is displayed on said at least one display means 6 at the corresponding position of at least one temperature sensor 7 in the hob 3 as soon as said at least one temperature sensor 7 belonging to said at least one heating zone Z1 detects the exceeding of said first temperature threshold value.

Ainsi, la position affichée d'au moins un témoin de chaleur résiduelle H sur ledit au moins un moyen d'affichage 6 correspond à la position d'au moins un capteur de température 7 appartenant à ladite au moins une zone de chauffe Z1 en minimisant la perte de précision de la position d'affichage dudit au moins un témoin de chaleur résiduelle H sur ledit au moins un moyen d'affichage 6 par rapport à ladite au moins une zone d'échauffement réelle du plan de cuisson 3 tout en garantissant la sécurité de l'utilisateur et en limitant la perte d'information de la position de ladite au moins une zone réelle d'échauffement par ledit au moins un témoin de chaleur résiduelle.Thus, the displayed position of at least one residual heat indicator H on said at at least one display means 6 corresponds to the position of at least one temperature sensor 7 belonging to said at least one heating zone Z1 while minimizing the loss of precision of the display position of said at least one residual heat indicator H on said at least one display means 6 with respect to said at least one actual heating zone of the hob 3 while ensuring the safety of the user and limiting the loss of information of the position of said at least one actual zone of heating by said at least one residual heat indicator.

Dans le cas où la zone de chauffe Z1 recouvre plusieurs capteurs de température 7, le témoin de chaleur résiduelle H est affiché sur ledit au moins un moyen d'affichage 6 à la position correspondante au capteur de température 7 mesurant la température la plus élevée et détectant le dépassement de la première valeur seuil de température suite à l'arrêt des inducteurs 2 de la zone de chauffe Z1.In the case where the heating zone Z1 covers several temperature sensors 7, the residual heat indicator H is displayed on said at least one display means 6 at the position corresponding to the temperature sensor 7 measuring the highest temperature and detecting the exceeding of the first temperature threshold value following the shutdown of the inductors 2 of the heating zone Z1.

Cette mesure de température dudit capteur de température 7 est lue par l'unité de commande de la table de cuisson à induction 1 et suit l'évolution de la mesure de température dudit capteur de température 7.This temperature measurement of said temperature sensor 7 is read by the control unit of the induction hob 1 and follows the evolution of the temperature measurement of said temperature sensor 7.

Ainsi, dans un tel cas de fonctionnement, l'affichage du témoin de chaleur résiduelle H est mis en oeuvre sur ledit au moins un moyen d'affichage 6 en fonction du capteur de température 7 ayant détecté un dépassement de la première valeur seuil de température, et où la valeur de température mesurée est la plus élevée, sans prendre en considération la mesure de température des autres capteurs de température 7 appartenant à la zone de chauffe Z1.Thus, in such a case of operation, the display of the residual heat indicator H is implemented on said at least one display means 6 as a function of the temperature sensor 7 having detected an exceeding of the first threshold temperature value. and where the measured temperature value is the highest, without taking into consideration the temperature measurement of the other temperature sensors 7 belonging to the heating zone Z1.

Dans un deuxième cas de fonctionnement préféré, ledit au moins un témoin de chaleur résiduelle H est affiché au même emplacement que la représentation de ladite au moins une zone de chauffe Z1 sur ledit au moins un moyen d'affichage 6 dès qu'au moins un capteur de température 7 appartenant à ladite au moins une zone de chauffe Z1 détecte le dépassement de ladite première valeur seuil de température.In a second preferred operating case, said at least one residual heat indicator H is displayed at the same location as the representation of said at least one heating zone Z1 on said at least one display means 6 as soon as at least one temperature sensor 7 belonging to said at least one heating zone Z1 detects the exceeding of said first threshold temperature value.

Ainsi, la position affichée d'au moins un témoin de chaleur résiduelle H sur ledit au moins un moyen d'affichage 6 correspond à la position réelle d'au moins une zone d'échauffement du plan de cuisson 3 de la table de cuisson à induction 1 du type matricielle puisque ladite position affichée correspond à la position d'au moins une zone de chauffe Z1 d'un récipient posé sur le plan de cuisson 3, et non à la position dudit au moins un capteur de température 7 situé à l'intérieur de ladite au moins une zone de chauffe Z1 d'un récipient posé sur le plan de cuisson 3.Thus, the displayed position of at least one residual heat indicator H on said at least one display means 6 corresponds to the actual position of at least one heating zone of the hob 3 of the cooking hob. induction 1 of the matrix type since said displayed position corresponds to the position of at least one heating zone Z1 of a container placed on the hob 3, and not to the position of said at least one temperature sensor 7 located at the inside said at least one heating zone Z1 of a container placed on the cooking surface 3.

Dans un mode de réalisation, tel qu'illustré à la figure 2, chaque inducteur 2 de la table de cuisson à induction 1 comporte un capteur de température 7.In one embodiment, as illustrated in figure 2 each inductor 2 of the induction hob 1 comprises a temperature sensor 7.

Une telle configuration matérielle de la table de cuisson à induction 1 permet au moyen du traitement des données de température provenant des capteurs de température 7 par l'unité de commande de ladite table 1 de délimiter au moins une zone d'échauffement du plan de cuisson 3 correspondant à au moins une zone de chauffe Z1 d'un récipient sur le plan de cuisson 3.Such a hardware configuration of the induction hob 1 makes it possible by means of the processing of the temperature data coming from the sensors of temperature 7 by the control unit of said table 1 to define at least one heating zone of the hob 3 corresponding to at least one heating zone Z1 of a container on the hob 3.

La détermination d'au moins une zone d'échauffement du plan de cuisson 3 peut être mise en oeuvre au moyen d'un seul capteur de température 7 ou de plusieurs capteurs de température 7 en fonction de la position et de la taille du récipient posé sur le plan de cuisson 3 et détecté au moyen des inducteurs 2 et des moyens de commande de la table de cuisson à induction 1.The determination of at least one heating zone of the hob 3 can be implemented by means of a single temperature sensor 7 or several temperature sensors 7 depending on the position and the size of the container placed on the cooking plane 3 and detected by means of the inductors 2 and control means of the induction hob 1.

Dans le mode de réalisation illustré à la figure 2, le nombre de capteurs de température 7 détectant la zone d'échauffement du plan de cuisson 3 correspondant à la zone de chauffe Z1 est de quatre.In the embodiment illustrated in figure 2 , the number of temperature sensors 7 detecting the heating zone of the hob 3 corresponding to the heating zone Z1 is four.

Dans un mode de réalisation plus économique, tel qu'illustré à la figure 1, lesdits inducteurs 2 sont regroupés en groupe d'inducteurs 8, et chaque groupe d'inducteurs 8 comprend un unique capteur de température 7 mesurant la température au niveau de chaque inducteur 2 d'un groupe d'inducteurs 8.In a more economical embodiment, as illustrated in figure 1 said inductors 2 are grouped into an inductor group 8, and each inductor group 8 comprises a single temperature sensor 7 measuring the temperature at each inductor 2 of an inductor group 8.

Ainsi, cette configuration matérielle de la table de cuisson à induction 1 permet au moyen du traitement des données de température provenant des capteurs de température 7 par l'unité de commande de ladite table 1 de délimiter au moins une zone d'échauffement du plan de cuisson 3 correspondant à au moins une zone de chauffe Z1 d'un récipient sur le plan de cuisson 3 au moindre coût en divisant le nombre de capteurs de température 7 par le nombre d'inducteurs 2 constituant chaque groupe d'inducteurs 8.Thus, this hardware configuration of the induction hob 1 makes it possible, by means of the processing of the temperature data coming from the temperature sensors 7, by the control unit of said table 1 to delimit at least one heating zone of the heating plane. cooking 3 corresponding to at least one heating zone Z1 of a container on the hob 3 at the lowest cost by dividing the number of temperature sensors 7 by the number of inductors 2 constituting each group of inductors 8.

De cette manière, le coût d'obtention d'une table de cuisson à induction 1 de type matricielle est minimisé en réduisant le nombre de capteurs de température 7 nécessaire à l'affichage d'au moins un témoin de chaleur résiduelle H sur ledit au moins un moyen d'affichage 6 correspondant à au moins une zone de chauffe Z1 d'un récipient sur le plan de cuisson 3, et en simplifiant la connexion de ces capteurs de température 7 aux moyens de commande de la table de cuisson à induction 1 lors de la fabrication de celle-ci.In this way, the cost of obtaining a matrix type induction cooktop 1 is minimized by reducing the number of temperature sensors 7 necessary for the display of at least one residual heat indicator H on said at least one display means 6 corresponding to at least one heating zone Z1 of a container on the hob 3, and simplifying the connection of these temperature sensors 7 to the control means of the induction hob 1 during the manufacture of it.

La détermination d'au moins une zone d'échauffement du plan de cuisson 3 peut être mise en oeuvre au moyen d'un seul capteur de température 7 ou de plusieurs capteurs de température 7 en fonction de la position et de la taille du récipient posé sur le plan de cuisson 3 et détecté au moyen des inducteurs 2 et des moyens de commande de la table de cuisson à induction 1.The determination of at least one heating zone of the hob 3 can be implemented by means of a single temperature sensor 7 or several temperature sensors 7 depending on the position and the size of the container placed on the cooking plane 3 and detected by means of the inductors 2 and control means of the induction hob 1.

Dans le mode de réalisation illustré à la figure 1, le nombre de capteurs de température 7 détectant la zone d'échauffement du plan de cuisson 3 correspondant à la zone de chauffe Z1 est de trois.In the embodiment illustrated in figure 1 , the number of temperature sensors 7 detecting the heating zone of the hob 3 corresponding to the heating zone Z1 is three.

Avantageusement, le procédé de commande peut comprendre une étape de détermination d'au moins un capteur de température 7 recouvert au moins partiellement par un récipient posé sur le plan de cuisson 3 lors de l'étape de mise en fonctionnement des inducteurs 2 de ladite au moins une zone de chauffe Z1.Advantageously, the control method may comprise a step of determining at least one temperature sensor 7 covered at least partially by a container placed on the hob 3 during the step of operating the inductors 2 of said at least one heating zone Z1.

Cette information dudit au moins un capteur de température 7 est mémorisée par l'unité de commande de la table de cuisson à induction 1 jusqu'à l'étape d'arrêt des inducteurs de ladite au moins une zone de chauffe Z1.This information of said at least one temperature sensor 7 is stored by the control unit of the induction hob 1 until the step of stopping the inductors of said at least one heating zone Z1.

Lorsque ladite au moins une zone de chauffe Z1 est arrêtée, si au moins un capteur de température 7 appartenant à ladite au moins une zone de chauffe Z1 détecte un dépassement d'une première valeur seuil de température, alors l'unité de commande de la table de cuisson à induction 1 commande l'affichage d'au moins un témoin de chaleur résiduelle H sur ledit au moins un moyen d'affichage 6 en lieu et place de l'objet graphique de ladite au moins une zone de chauffe Z1 représentée sur ledit au moins un moyen d'affichage 6.When said at least one heating zone Z1 is stopped, if at least one temperature sensor 7 belonging to said at least one heating zone Z1 detects an overshoot of a first temperature threshold value, then the control unit of the induction hob 1 controls the display of at least one residual heat indicator H on said at least one display means 6 in place of the graphic object of said at least one heating zone Z1 shown on said at least one display means 6.

Dans un autre mode de réalisation, la table de cuisson à induction 1 comprend au moins un compteur d'énergie détectant au moins une zone d'échauffement du plan de cuisson 3.In another embodiment, the induction hob 1 comprises at least one energy meter detecting at least one heating zone of the hob 3.

Dans ce mode de réalisation, l'étape de détermination d'un dépassement d'une première valeur seuil de température est mise en oeuvre au moyen dudit au moins un compteur d'énergie, où ledit au moins un compteur d'énergie détermine un niveau d'échauffement de ladite au moins une zone de chauffe Z1 en fonction d'au moins un paramètre de fonctionnement d'au moins un dispositif d'alimentation à onduleur.In this embodiment, the step of determining an overshoot of a first threshold temperature value is implemented by means of said at least one energy meter, wherein said at least one energy meter determines a level. for heating said at least one heating zone Z1 as a function of at least one operating parameter of at least one inverter supply device.

Et l'étape d'affichage d'au moins un témoin de chaleur résiduelle H sur ledit au moins un moyen d'affichage 6 affiche la position dudit au moins un témoin de chaleur résiduelle H sur ledit au moins un moyen d'affichage 6 en fonction des données de fonctionnement dudit au moins un dispositif d'alimentation à onduleur relevées par ledit au moins un compteur d'énergie ayant déterminé le dépassement de la première valeur seuil de température dans le plan de cuisson 3.And the step of displaying at least one residual heat indicator H on said at least one display means 6 displays the position of said at least one residual heat indicator H on said at least one display means 6 function of the operating data of said at least one inverter supply device read by said at least one energy meter having determined that the first temperature threshold value in the hob 3 has been exceeded.

Les données de fonctionnement dudit au moins un dispositif d'alimentation à onduleur relevées par ledit au moins un compteur d'énergie peuvent être, en particulier, le temps de fonctionnement d'au moins un dispositif d'alimentation à onduleur et/ou la puissance délivrée à un inducteur par au moins un dispositif d'alimentation à onduleur de sorte à déterminer un niveau d'échauffement d'au moins une zone de chauffe Z1.The operating data of said at least one inverter supply device taken up by said at least one energy meter can be, in particular, the operating time of at least one inverter supply device and / or the power delivered to an inductor by at least one inverter supply device so as to determine a heating level of at least one heating zone Z1.

Suite à l'arrêt des inducteurs 2 de ladite au moins une zone de chauffe Z1, les données de fonctionnement dudit au moins un dispositif d'alimentation à onduleur relevées par ledit au moins un compteur d'énergie sont analysées par l'unité de commande de la table de cuisson à induction 1 de sorte à déterminer s'il est nécessaire d'afficher au moins un témoin de chaleur résiduelle H sur ledit au moins un moyen d'affichage 6.Following the arrest of the inductors 2 of said at least one heating zone Z1, the operating data of said at least one inverter supply device read by said at least one energy meter are analyzed by the control unit. of the induction hob 1 so as to determine whether it is necessary to display at least one residual heat indicator H on said at least one display means 6.

Les données de fonctionnement dudit au moins un dispositif d'alimentation à onduleur relevées par ledit au moins un compteur d'énergie peuvent se présenter sous forme de données numériques pour leur traitement par au moins un microcontrôleur de l'unité de commande, où ces données de fonctionnement sont l'image de la température présente au niveau d'au moins une zone d'échauffement dans le plan de cuisson 3.The operating data of said at least one inverter supply device read by said at least one energy meter can be in the form of digital data for processing by at least one microcontroller of the control unit, where these data operating mode are the image of the temperature present at at least one heating zone in the hob 3.

Si la température déterminée au niveau d'au moins une zone d'échauffement dans le plan de cuisson 3 dépasse au moins une première valeur seuil de température, alors au moins un témoin de chaleur résiduelle H doit être symbolisé sur ledit au moins un moyen d'affichage 6.If the temperature determined at at least one heating zone in the hob 3 exceeds at least a first threshold temperature value, then at least one residual heat indicator H must be symbolized on said at least one heating element. display 6.

Le procédé de commande comprend également une étape d'extinction dudit au moins un témoin de chaleur résiduelle H suite à la détermination de franchissement d'une deuxième valeur seuil de température au niveau de ladite au moins une zone d'échauffement dans le plan de cuisson 3 appartenant à ladite au moins une zone de chauffe Z1, où la deuxième valeur seuil de température est inférieure à la première valeur seuil de température.The control method also comprises a step of extinguishing said at least one residual heat indicator H following the determination of crossing a second threshold temperature value at said at least one heating zone in the hob. 3 belonging to said at least one heating zone Z1, where the second temperature threshold value is lower than the first temperature threshold value.

Dans un mode de réalisation, la détermination de franchissement d'une deuxième valeur seuil de température au niveau de ladite au moins une zone d'échauffement dans le plan de cuisson 3 est mise en oeuvre par au moins un capteur de température 7 appartenant à ladite au moins une zone de chauffe Z1.In one embodiment, the crossing determination of a second temperature threshold value at said at least one heating zone in the hob 3 is implemented by at least one temperature sensor 7 belonging to said at least one heating zone Z1.

Les données de température mesurées par ledit au moins un capteur de température 7 peuvent être analysées en permanence par l'unité de commande de la table de cuisson à induction 1 de sorte à déterminer à quel moment ledit au moins un témoin de chaleur résiduelle H affiché sur ledit au moins un moyen d'affichage 6 peut être éteint.The temperature data measured by said at least one temperature sensor 7 can be continuously analyzed by the control unit of the induction hob 1 so as to determine when said at least one H residual heat indicator displayed on said at least one display means 6 can be turned off.

Lorsqu'une zone d'échauffement du plan de cuisson 3 est détectée par plusieurs capteurs de température 7, le témoin de chaleur résiduelle H affiché sur ledit au moins un moyen d'affichage 6 est éteint lorsque les données de température mesurées par tous ces capteurs de température 7 sont inférieures à la deuxième valeur seuil de température.When a heating zone of the hob 3 is detected by several temperature sensors 7, the residual heat indicator H displayed on said at least one display means 6 is extinguished when the temperature data measured by all these sensors 7 are lower than the second temperature threshold value.

Dans un autre mode de réalisation, la détermination de franchissement d'une deuxième valeur seuil de température au niveau de ladite au moins une zone d'échauffement dans le plan de cuisson 3 appartenant à ladite au moins une zone de chauffe Z1 est mise en oeuvre par le décompte d'une durée prédéterminée au travers des moyens de commande de la table de cuisson à induction 1, en particulier au moins un microcontrôleur, depuis la détermination d'un dépassement de la première valeur seuil de température au niveau de ladite moins une zone d'échauffement dans le plan de cuisson 3 appartenant à ladite au moins une zone de chauffe Z1.In another embodiment, the crossing determination of a second threshold temperature value at said at least one heating zone in the hob 3 belonging to said at least one heating zone Z1 is implemented. by the countdown of a predetermined duration through the control means of the induction hob 1, in particular at least one microcontroller, since the determination of an exceeding of the first threshold temperature value at the level of said minus one heating zone in the hob 3 belonging to said at least one heating zone Z1.

Cette durée prédéterminée peut être dépendante du temps de fonctionnement d'au moins un dispositif d'alimentation à onduleur et/ou de la puissance délivrée à un inducteur par au moins un dispositif d'alimentation à onduleur.This predetermined duration may be dependent on the operating time at least one inverter supply device and / or the power delivered to an inductor by at least one inverter supply device.

Les données de fonctionnement dudit au moins un dispositif d'alimentation à onduleur relevées par ledit au moins un compteur d'énergie peuvent être analysées par l'unité de commande de la table de cuisson à induction 1 suite à l'étape d'arrêt des inducteurs 2 de ladite au moins une zone de chauffe Z1 de sorte à déterminer à quel moment ledit au moins un témoin de chaleur résiduelle H affiché sur ledit au moins un moyen d'affichage 6 peut être éteint.The operating data of said at least one inverter supply device taken up by said at least one energy meter can be analyzed by the control unit of the induction hob 1 following the step of stopping the inductors 2 of said at least one heating zone Z1 so as to determine when said at least one residual heat indicator H displayed on said at least one display means 6 can be extinguished.

A titre d'exemple nullement limitatif, la première valeur seuil de température est de l'ordre de 60°C et la deuxième valeur seuil de température est de l'ordre de 50°C.By way of non-limiting example, the first temperature threshold value is of the order of 60 ° C. and the second temperature threshold value is of the order of 50 ° C.

Cet écart de température entre la première valeur seuil de température et la deuxième valeur seuil de température, appelé généralement hystérésis, permet d'éviter une éventuelle extinction dudit au moins un témoin de chaleur résiduelle H, puis le réaffichage de celui-ci, puis à nouveau l'extinction de celui-ci si la température surveillée oscille autour d'une valeur seuil de température unique.This temperature difference between the first temperature threshold value and the second temperature threshold value, generally called hysteresis, makes it possible to avoid a possible extinction of the at least one residual heat indicator H, then the re-display thereof, then to again the extinction of it if the monitored temperature oscillates around a single temperature threshold value.

Avantageusement, suite à une détection d'au moins une nouvelle zone de chauffe Z2 constituée d'un sous-ensemble d'inducteurs 2 recouverts au moins partiellement par un récipient, si la représentation de ladite au moins une nouvelle zone de chauffe Z2 sur ledit au moins un moyen d'affichage 6 recoupe au moins partiellement l'affichage d'au moins un témoin de chaleur résiduelle H sur ledit au moins un moyen d'affichage 6, alors ledit procédé comprend une étape d'extinction dudit au moins un témoin de chaleur résiduelle H puis une étape de représentation de ladite au moins une nouvelle zone de chauffe Z2 sur ledit au moins un moyen d'affichage 6.Advantageously, following detection of at least one new heating zone Z2 consisting of a subset of inductors 2 covered at least partially by a container, if the representation of said at least one new heating zone Z2 on said at least one display means 6 at least partially intersects the display of at least one residual heat indicator H on said at least one display means 6, whereas said method comprises a step of extinguishing said at least one control residual heat H then a step of representing said at least one new heating zone Z2 on said at least one display means 6.

Ainsi, la lisibilité des données de l'affichage dudit au moins un moyen d'affichage 6 est améliorée.Thus, the readability of the data of the display of said at least one display means 6 is improved.

Le recoupement au moins partiel d'une zone d'échauffement du plan de cuisson 3 par au moins une nouvelle zone de chauffe Z2 permet d'éteindre l'affichage d'un témoin de chaleur résiduelle H associé à ladite zone d'échauffement du plan de cuisson 3 sans risque sécuritaire majeur pour l'utilisateur.The at least partial overlapping of a heating zone of the hob 3 by at least one new heating zone Z2 makes it possible to extinguish the display of a residual heat indicator H associated with said heating zone of the plane cooking 3 without major safety risk for the user.

Avantageusement, si l'affichage d'au moins un premier témoin de chaleur résiduelle H sur ledit au moins un moyen d'affichage 6 recoupe au moins partiellement l'affichage d'au moins un deuxième témoin de chaleur résiduelle H sur ledit au moins un moyen d'affichage 6, alors le procédé de commande comprend une étape d'affichage dudit au moins un témoin de chaleur résiduelle H sur ledit au moins un moyen d'affichage 6 correspondant à la zone d'échauffement du plan de cuisson 3 où la température la plus élevée est déterminée.Advantageously, if the display of at least a first residual heat indicator H on said at least one display means 6 at least partially intersects the display of at least a second residual heat indicator H on said at least one display means 6, then the control method comprises a step of displaying said at least one residual heat indicator H on said at least one display means 6 corresponding to the heating zone of the hob 3 where the highest temperature is determined.

Ainsi, la lisibilité des données de l'affichage dudit au moins un moyen d'affichage 6 est améliorée.Thus, the readability of the data of the display of said at least one display means 6 is improved.

Le recoupement au moins partiel d'une première zone d'échauffement du plan de cuisson 3 par une deuxième zone d'échauffement du plan de cuisson 3 permet d'éteindre l'affichage d'un témoin de chaleur résiduelle H associé à la zone d'échauffement du plan de cuisson 3 ayant la température la moins élevée sans risque sécuritaire majeur pour l'utilisateur.The at least partial overlapping of a first heating zone of the hob 3 by a second heating zone of the hob 3 makes it possible to extinguish the display of a residual heat indicator H associated with the heating zone 3. heating of the hob 3 having the lowest temperature without major safety risk for the user.

La table de cuisson à induction 1 comprend des moyens de commande pourvue d'une unité de commande. L'unité de commande comporte au moins une carte électronique pourvue d'au moins un microcontrôleur apte à mettre en oeuvre le procédé de commande en fonctionnement d'une table de cuisson à induction conforme à l'invention.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 implementing the control method in operation of an induction hob according to the invention.

Ainsi, l'unité de commande contrôle notamment les inducteurs 2, et le ou les capteurs de température 7, ou le ou les compteurs d'énergie de sorte à gérer l'affichage et l'extinction d'au moins un témoin de chaleur résiduelle H sur ledit au moins un moyen d'affichage 6 à une position donnée image de l'emplacement d'au moins un récipient posé sur le plan de cuisson 3 d'une table de cuisson à induction 1 de type matricielle et précédemment mis en chauffe par un sous-ensemble d'inducteurs 2 constituant au moins une zone de chauffe Z1, où ladite au moins une zone de chauffe Z1 constitue une zone d'échauffement du plan de cuisson 3, comme décrit précédemment.Thus, the control unit controls in particular the inductors 2, and the temperature sensor (s) 7 or the energy meter (s) so as to manage the display and the extinction of at least one residual heat indicator H on said at least one display means 6 at a given position image of the location of at least one container placed on the hob 3 of a matrix-type induction cooktop 1 and previously heated up by a subset of inductors 2 constituting at least one heating zone Z1, wherein said at least one heating zone Z1 constitutes a heating zone of the hob 3, as previously described.

Grâce à la présente invention, le procédé de commande en fonctionnement d'un ensemble d'inducteurs d'une table de cuisson à induction permet d'afficher de manière claire et significative la position d'affichage d'au moins un témoin de chaleur résiduelle sur au moins un moyen d'affichage de sorte à garantir la sécurité des utilisateurs par une lisibilité accrue sur ledit au moins un moyen d'affichage.Thanks to the present invention, the operating control method of a set of inductors of an induction hob makes it possible to clearly and significantly display the display position of at least one residual heat indicator. on at least one display means so as to guarantee the safety of the users by increased readability on said at least one display means.

Bien entendu, la présente invention n'est pas limitée aux exemples de réalisation décrits précédemment.Of course, the present invention is not limited to the embodiments described above.

En particulier, la présente invention n'est ni limitée en nombre d'inducteurs répartis suivant une trame bidimensionnelle dans le plan de cuisson de la table de cuisson à induction, ni en nombre de zones de chauffe pouvant être définies sur le plan de cuisson à partir de la position d'un récipient recouvrant un sous-ensemble d'inducteurs.In particular, 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.

Claims (9)

  1. A method for controlling the operation of a set of inductors (2) of an induction cooking hob (1), said inductors (2) being distributed in a two-dimensional array in a cooking surface (3) of said induction cooking hob (1), and each inductor (2) being powered by an inverter powering device, said inductors (2) forming means of heating a container and means of detecting the presence of a container,
    said method comprising at least the following steps:
    - detecting at least one heating zone (Z1) composed of a subset of inductors (2) covered at least partially by a container;
    - depicting said at least one heating zone (Z1) on at least one means of display (6);
    - turning on the inductors (2) of said at least one heating zone (Z1);
    - turning off the inductors (2) of said at least one heating zone (Z1);
    - after turning off the inductors (2) of said at least one heating zone (Z1), determining that a first temperature threshold value has been exceeded within at least one warming zone in said cooking surface (3) belonging to said at least one heating zone (Z1);
    characterized in that said method further comprises at least the following step:
    - displaying at least one indicator of residual heat (H) on said at least one means of display (6),
    - wherein the position of said at least one indicator of residual heat (H) on said at least one means of display (6) is dependent on the position of said at least one warming zone detected in said cooking surface (3), and
    - wherein after detection of at least one new heating zone (Z2) composed of a subset of inductors (2) covered at least partially by a container, if the depiction of said at least one new heating zone (Z2) on said at least one means of display (6) at least partially overlaps the display of at least one zone for viewing an indicator of residual heat (H) on said at least one means of display (6), then said method comprises a step of turning off said at least one zone for viewing an indicator of residual heat (H) on said at least one means of display (8), then said method comprises a step of turning off said at least one zone for viewing an indicator of residual heat (H) then a step of depicting said at least one new heating zone (Z2) on said at least one means of display (6).
  2. A method for controlling the operation of a set of inductors (2) of an induction cooking hob (1) according to claim 1, characterized in that said at least one indicator of residual heat (H) is displayed in the same location as the depiction of said at least one heating zone (Z1) on said at least one means of display (6) once said first temperature threshold value is detected to have been crossed in said at least one heating zone (Z1).
  3. A method for controlling the operation of a set of inductors (2) of an induction cooking hob (1) according to claim 2, characterized in that-said method comprises a step of determining the coordinates representing said at least one heating zone (Z1) on said at least one means of display (6) during the step of detecting said at least one heating zone (Z1) on said cooking surface (3), and a step of assigning said coordinates representing said at least one heating zone (Z1) on said at least one means of display (6) to the positioning coordinates of said at least one indicator of residual heat (H) on said at least one display (6) once said first temperature threshold value is detected to have been crossed in said at least one heating zone (Z1).
  4. A method for controlling the operation of a set of inductors (2) of an induction cooking hob (1) according to any one of the claims 1 to 3, characterized in that said method comprises a step of turning off said at least one indicator of residual heat (H) following the determination that a second temperature threshold value has been crossed in said at least one warming zone in said cooking surface (3) belonging to said at least one heating zone (Z1), wherein said second temperature threshold value is less than said first temperature threshold value.
  5. A method for controlling the operation of a set of inductors (2) of an induction cooking hob (1) according to any one of the claims 1 to 4, characterized in that if the display of at least one first indicator of residual heat (H) is displayed on said at least one means of display (6) at least partially overlaps the display of at least one second indicator of residual heat (H) on said at least one means of display (6), then said method comprises a step of displaying said at least one indicator of residual heat (H) on said at least one means of display (6) corresponding to the warming zone of said cooking surface (3) where the highest temperature is determined.
  6. A method for controlling the operation of a set of inductors (2) of an induction cooking hob (1) according to any one of the claims 1 to 5, said hob (1) comprising a plurality of temperature sensors (7) in said cooking surface (3) detecting at least one warming zone of said cooking surface (3), characterized in that:
    - said step of determining that a first temperature threshold value has been exceeded is implemented by means of at least one temperature sensor (7) in said cooking surface (3),
    - wherein said at least one temperature sensor (7) is covered at least partially by a container heated during said step of turning on the inductors (2) of said at least one heating zone (Z1), and
    - said step of displaying at least one indicator of residual heat (H) on said at least one means of display (6) displays the position of said at least one indicator of residual heat (H) on said at least one means of display (6) based on the position of said at least one temperature sensor (7) that detected that said first temperature threshold value had been exceeded in said cooking surface (3).
  7. A method for controlling the operation of a set of inductors (2) of an induction cooking hob (1) according to any one of the claims 1 to 5, said hob (1) comprising at least one energy meter detecting at least one warming zone of said cooking surface (3), characterized in that:
    - said step of determining that a first temperature threshold value had been exceeded is implemented by means of said at least one energy meter,
    - wherein said at least one energy meter determines a warming level of said at least one heating zone (Z1) based on at least one operating parameter of at least one inverter powering device, and
    - said step of displaying at least one residual heat (H) on said at least one means of display (6) displays the position of said at least one indicator of residual heat (H) on said at least one means of display (6) based on the operating data of said at least one inverter powering device recorded by said at least one energy meter that determined that said first temperature threshold value had been exceeded in said cooking surface (3).
  8. An induction cooking hob (1), comprising a set of inductors (2) distributed in a two-dimensional array in a cooking surface (3) of said induction cooking hob (1), each inductor (2) being powered by an inverter powering device, said inductors (2) forming means of heating a container and means of detecting the presence of a container, characterized in that it comprises control means adapted to implement the method of control according to any one of the claims 1 to 7.
  9. An induction cooking hob (1) according to claim 8, said hob (1) comprising a plurality of temperature sensors (7) in said cooking surface (3) detecting at least one warming zone of said cooking surface (3), characterized in that said inductors (2) are grouped into a group of inductors (8), and each group of inductors (8) comprising a single temperature sensor (7) measuring the temperature within a group of inductors (8).
EP11184075.7A 2010-10-07 2011-10-06 Method for controlling the operation of a set of induction units of an induction cooktop and associated induction cooktop Revoked EP2440007B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1003981A FR2966002B1 (en) 2010-10-07 2010-10-07 METHOD FOR OPERATING CONTROL OF INDUCTOR ASSEMBLY OF INDUCTION COOKTOP AND INDUCTION COOKTOP THEREFOR

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EP2440007A2 EP2440007A2 (en) 2012-04-11
EP2440007A3 EP2440007A3 (en) 2012-11-21
EP2440007B1 true EP2440007B1 (en) 2016-08-03

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EP11184075.7A Revoked EP2440007B1 (en) 2010-10-07 2011-10-06 Method for controlling the operation of a set of induction units of an induction cooktop and associated induction cooktop

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EP (1) EP2440007B1 (en)
ES (1) ES2600640T3 (en)
FR (1) FR2966002B1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9699834B2 (en) 2012-10-22 2017-07-04 Panasonic Intellectual Property Management Co., Ltd. Induction heating cooker
WO2017038014A1 (en) * 2015-08-28 2017-03-09 パナソニックＩｐマネジメント株式会社 Induction heating cooker
EP3503672B1 (en) * 2017-12-20 2022-08-10 Vestel Elektronik Sanayi ve Ticaret A.S. Induction cooktop
KR102631230B1 (en) * 2018-10-10 2024-01-29 엘지전자 주식회사 Induction heating device having improved function for distinguishing the object to be heated

Citations (13)

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Publication number Priority date Publication date Assignee Title
DE3118414A1 (en) 1981-05-09 1982-11-25 Diehl Gmbh & Co RESIDUAL HEAT INDICATOR FOR AN ELECTRICALLY HEATED STOVE
DE4007680A1 (en) 1990-03-10 1991-09-19 Grass Ag Glass-ceramic cooking hob - has field of sensor-driven elements each a preset different power outputs
DE4317040A1 (en) 1993-05-21 1994-04-28 Schott Glaswerke Glass ceramic hob with temperature display - has alphabetic display of state of hot plate, activated by temperature sensors beneath hot plate
WO1997037515A1 (en) 1996-03-29 1997-10-09 Kolja Kuse Homogeneous heating plate
DE19802571A1 (en) 1998-01-23 1999-08-05 Bosch Siemens Hausgeraete Hob with display elements
DE10033361A1 (en) 2000-07-08 2002-01-24 Thomas Wartmann Matrix cooking unit has matrices of heating zones and sensor points for locating cooking vessels and measuring cooking temperatures
EP1505854A1 (en) 2003-08-04 2005-02-09 Whirpool Corporation Random positioning cooking hob with user interface
EP1575336A1 (en) 2004-03-12 2005-09-14 Brandt Industries SAS Assembling module of induction coils of a induction heating cooking area and cooking area including the said modules
DE19936418B4 (en) 1998-10-05 2007-10-25 BSH Bosch und Siemens Hausgeräte GmbH Cooking appliance with a display unit for residual heat display and method for operating such a cooking appliance
EP1978784A1 (en) 2007-04-05 2008-10-08 Whirlpool Corporation Method for estimating the surface temperature of a random positioning cooking hob.
WO2009068387A2 (en) 2007-11-28 2009-06-04 BSH Bosch und Siemens Hausgeräte GmbH Household appliance display device
US7554060B2 (en) 2006-09-29 2009-06-30 England Raymond O Displaying cooking-related information
WO2010063539A2 (en) 2008-12-01 2010-06-10 BSH Bosch und Siemens Hausgeräte GmbH Hob comprising a visual display unit and method for operating a hob

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2863039B1 (en) * 2003-11-27 2006-02-17 Brandt Ind METHOD FOR HEATING A CONTAINER POSITIONED ON A COOKTOP HAVING HEATING MEANS ASSOCIATED WITH INDUCERS
ES2331037B1 (en) * 2007-10-25 2010-09-21 Bsh Electrodomesticos España, S.A. COOKING FIELD AND PROCEDURE FOR THE OPERATION OF A COOKING FIELD.

Patent Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3118414A1 (en) 1981-05-09 1982-11-25 Diehl Gmbh & Co RESIDUAL HEAT INDICATOR FOR AN ELECTRICALLY HEATED STOVE
DE4007680A1 (en) 1990-03-10 1991-09-19 Grass Ag Glass-ceramic cooking hob - has field of sensor-driven elements each a preset different power outputs
DE4317040A1 (en) 1993-05-21 1994-04-28 Schott Glaswerke Glass ceramic hob with temperature display - has alphabetic display of state of hot plate, activated by temperature sensors beneath hot plate
WO1997037515A1 (en) 1996-03-29 1997-10-09 Kolja Kuse Homogeneous heating plate
DE19802571A1 (en) 1998-01-23 1999-08-05 Bosch Siemens Hausgeraete Hob with display elements
DE19936418B4 (en) 1998-10-05 2007-10-25 BSH Bosch und Siemens Hausgeräte GmbH Cooking appliance with a display unit for residual heat display and method for operating such a cooking appliance
DE10033361A1 (en) 2000-07-08 2002-01-24 Thomas Wartmann Matrix cooking unit has matrices of heating zones and sensor points for locating cooking vessels and measuring cooking temperatures
EP1505854A1 (en) 2003-08-04 2005-02-09 Whirpool Corporation Random positioning cooking hob with user interface
EP1575336A1 (en) 2004-03-12 2005-09-14 Brandt Industries SAS Assembling module of induction coils of a induction heating cooking area and cooking area including the said modules
US7554060B2 (en) 2006-09-29 2009-06-30 England Raymond O Displaying cooking-related information
EP1978784A1 (en) 2007-04-05 2008-10-08 Whirlpool Corporation Method for estimating the surface temperature of a random positioning cooking hob.
WO2009068387A2 (en) 2007-11-28 2009-06-04 BSH Bosch und Siemens Hausgeräte GmbH Household appliance display device
WO2010063539A2 (en) 2008-12-01 2010-06-10 BSH Bosch und Siemens Hausgeräte GmbH Hob comprising a visual display unit and method for operating a hob

Also Published As

Publication number Publication date
EP2440007A2 (en) 2012-04-11
ES2600640T3 (en) 2017-02-10
FR2966002B1 (en) 2015-12-11
FR2966002A1 (en) 2012-04-13
EP2440007A3 (en) 2012-11-21

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