EP2440009B1 - Procédé de commande en fonctionnement d'un ensemble d'inducteurs d'une table de cuisson à induction et table de cuisson à induction associée - Google Patents

Procédé de commande en fonctionnement d'un ensemble d'inducteurs d'une table de cuisson à induction et table de cuisson à induction associée Download PDF

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Publication number
EP2440009B1
EP2440009B1 EP11184215.9A EP11184215A EP2440009B1 EP 2440009 B1 EP2440009 B1 EP 2440009B1 EP 11184215 A EP11184215 A EP 11184215A EP 2440009 B1 EP2440009 B1 EP 2440009B1
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EP
European Patent Office
Prior art keywords
heating zone
inductors
container
hob
new
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EP11184215.9A
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German (de)
English (en)
French (fr)
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EP2440009A2 (fr
EP2440009A3 (fr
Inventor
Didier Gouardo
Xavier Andre
Jean-Marc Bugeia
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Groupe Brandt SAS
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Groupe Brandt SAS
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Publication of EP2440009A3 publication Critical patent/EP2440009A3/fr
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    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/02—Induction heating
    • H05B6/06—Control, e.g. of temperature, of power
    • H05B6/062—Control, e.g. of temperature, of power for cooking plates or the like
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B2213/00—Aspects relating both to resistive heating and to induction heating, covered by H05B3/00 and H05B6/00
    • H05B2213/03—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.
  • each heating zone is constituted on a case-by-case basis depending on the position and the size of the container placed on the cooking surface under to 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”).
  • Each inverter supply device can be made either in a half-bridge architecture, implementing two power switches, or in a quasi-resonant circuit architecture, implementing a single power switch.
  • Such a hob without predefined heating zones having an automatic detection of containers, makes it possible to detect the sliding and / or the withdrawal of a container from an initial heating zone detected following the displacement of said container.
  • a step of searching for at least one new heating zone consisting of a subset of inductors at least partially covered by an object is implemented by control means of the induction hob.
  • the operating adjustment parameter (s) of the initial heating zone displaced are applied to said new heating zone associated with said object.
  • an operating mode of an induction hob has the drawbacks of either heating a container initially present on the cooking surface but not intended to be heated, or heating an incompatible object, such as by example a metal container lid, placed on the cooking surface.
  • EP 2 211 591 A1 which describes an inductive hob where the inductors are distributed in a two-dimensional grid in a hob of the induction hob, and a method of operating a hob with a plurality of hobs.
  • heating elements comprising the steps of detecting a cooking vessel by a detection device; forming a heating zone adapted to the cooking vessel detected with one or more heating elements; adjusting at least one operating parameter of a heating zone by means of a user interface; detecting an operation involving removing the cooking vessel from an original position and positioning a cooking vessel at a final position; assignment of the operation to one of at least three cases.
  • the at least one operating parameter set for the displaced heating zone is automatically taken over.
  • the at least one operating parameter set for the displaced heating zone is resumed only if the user confirms this with a corresponding input.
  • the at least one operating parameter set is set to a set value.
  • WO 2009 049989 A1 discloses a cooking device with a group of heating units, a heating group forming unit, which is provided to form a first heating unit heating unit which is adjusted to a first selection position of a cooking vessel, and an assigning device, which is provided for associating the first heating group with at least one heating operation parameter, wherein the assigning device in at least one operating mode, by sliding the cooking vessel in a second selection position, maintains the heating operation parameter for the heating operation of a second heating group which is adjusted to the second selection position.
  • an input unit and the assignment device is provided for, in joint action with the input unit, in at least one operating mode in case of lifting the cooking vessel to a new position of selection, assign the heating operation parameter to a heating group adjusted to the new selection position by means of an input signal of the input unit.
  • 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, to avoid the unwanted heating container or object placed on the hob following the displacement of a container associated with a heating zone initially detected.
  • said declaration confirmation step is to be executed so that said detected object at the location of said new of heated zone is taken into consideration as a container to be heated, and following said step of searching for at least one new heating zone consisting of a subset of inductors covered at least partially by an object, if a new heating zone consisting of a subset of inductors at least partially covered by an object is detected in a period of time greater than said predetermined duration value, where said inductors are unaffected by minus an initial heating zone not displaced, then a step of operation of said new heating zone is implemented with at least one same operating parameter of said initial heating zone displaced.
  • the steps of indicating said at least one new heating zone detected and confirmation of the declaration of the object associated with this new heating zone make it possible to avoid unwanted heating of the container or object placed on the hob following displacement of a container associated with a heating zone initially detected, in the case where said at least one new heating zone is distinct from said at least one initial heating zone.
  • an induction hob makes it possible on the one hand to ensure that a container initially present on the hob and having been moved or not is not heated later without the confirmation of the user, and secondly to ensure that an incompatible object, such as for example a metal container lid, placed on the hob is not heated following the displacement of a container initially present on the cooking plan.
  • Such an induction hob solves the drawbacks of an automatic detection of a container or object placed on the hob following the displacement of a container associated with a heating zone initially detected so as to avoid heating. either a container not intended to be heated placed on the hob, or an incompatible object placed on the hob.
  • control means of the induction hob in a limited period of time following the displacement of the container associated with an initial heating zone, said control means expect a signal of confirmation entry of the object associated with a new heating zone so as to ensure that the object is not a container placed on the hob to be heated or an incompatible object placed on the cooktop not to be heated.
  • This new heating zone is thus put into operation only after confirmation of the declaration of the object associated with the new heating zone by the user since the operating command of the new heating zone detected may not be desired by the user. user and only related to the automatic detection of object on the hob not assigned to an initial heating zone following the displacement of the container associated with an initial heating zone.
  • At least one of the operating parameters of the initial heating zone displaced is applied to the new heating zone associated with an object so as to avoid programming again at least one of the operating parameters of said new heating zone. moving a container associated with a heating zone initially detected.
  • At least one of the operating parameters of the displaced initial heating zone is transposed to the new heating zone so that one and the same vessel can be heated under similar conditions while avoiding to the user a new programming. operating parameters.
  • This transposition of at least one of the operating parameters of the initial heating zone moved to the new heating zone is implemented under the supervision of the user since it must confirm the declaration of the object associated with the new heating zone so as to guarantee the heating of a desired compatible object.
  • 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 induction hob 1 comprises heating means constituted by 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 FIG. figure 1 , 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 square as illustrated in FIG. figure 1 .
  • the shape of the hob is not limiting and may be different, including rectangular, 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.
  • Inductors 2 thus constitute both the heating means of a container and the means for detecting the presence of a container.
  • the control means (not shown) of the induction hob 1, comprising at least one or more microcontrollers, are able to control one or more containers placed on the hob 3 and apply operating powers to each zone. different or identical heaters which are dependent on the desired power demanded by the user for each container.
  • the induction hob 1 comprises a control keyboard 4 comprising at least selection means 5, such as for example 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 control method comprises a first step of detecting at least one initial heating zone Z1, Z2 consisting of a subset of inductors 2 at least partially covered by a receptacle.
  • the container or containers are positioned freely on the cooking plane 3 by the user and the initial heating zones Z1, Z2 are associated with these containers following the first detection step.
  • the first detection step comprises a search phase of at least one initial heating zone Z1, Z2 consisting of a subset of inductors 2 at least partially covered by a container.
  • This search phase of at least one initial heating zone Z1, Z2 consisting of a subset of inductors 2 at least partially covered by a receptacle may be implemented for example by scanning all the inductors 2 in accordance with a predetermined course.
  • the detection of the inductors 2 covered with a container does not need to be described in detail here and can be carried out according to the embodiment described in particular in the document FR 2 863 039 .
  • the inductors 2 belonging to a subset of inductors 2 forming an initial heating zone Z1, Z2, these inductors 2 are assigned to a list of inductors 2 used for a heating zone. initial Z1, Z2 of the hob 3.
  • a step of entering at least one set of cooking time associated with one of the initial heating zones Z1, Z2 can also be implemented through the selection means 5 of the control keyboard 4.
  • the control method also comprises a step of detecting at least one displacement of a container associated with an initial heating zone Z1 with respect to the hob 3.
  • This step of detecting at least one displacement of a receptacle is carried out following the displacement of a receptacle on the cooking plane 3.
  • This movement of a receptacle can be carried out with the latter lifted with respect to the hob 3, that is to say that the container is no longer brought into contact with the hob 3 during movement of said container, or by sliding thereof with respect to the hob 3 that is to say that the container is kept in contact with the hob 3 during the movement of said container.
  • the displacement of a container associated with an initial heating zone Z1 may correspond to the withdrawal of the container from the hob 3.
  • the detection of at least one movement of a container is implemented automatically by the control means of the induction hob 1.
  • Said at least one displacement of a container can be detected by a variation of a measurement made in at least one of the inductors 2 of the hob 3 for determining through the control means of the induction hob 1 if the container has been removed from the hob 3, or if the container has been moved so as to modify the overlap surface of one or more inductors 2, or if the container has been moved so as to cover one or more new inductors 2.
  • the variation of a measurement made in at least one of the inductors 2 of the hob 3 can be observed by the control means of the induction hob 1 for example by measuring the current flowing in an inductor 2, or in a control transistor of an inductor 2, or by analyzing an operating parameter of a control member of an electronic control circuit of an inductor 2.
  • control method comprises a step of searching for at least one new zone of heater Z3 consisting of a subset of inductors 2 covered at least partially by an object.
  • the detection of a displacement of at least one container causes the implementation by means of the control means of the induction hob 1 of a step of searching for at least one new heating zone Z3.
  • This search phase of at least one new heating zone Z3 consists of a subset of inductors 2 at least partially covered by a container can be implemented for example by scanning all the inductors 2 one or more times following a predetermined route.
  • This step of searching for at least one new heating zone Z3 can be carried out substantially identically to the search phase of at least one initial heating zone Z1, Z2 of the first detection step.
  • This step of searching for at least one new heating zone Z3 comprises a phase of checking the recovery of at least one of the inductors 2 constituting an initial heating zone Z1 displaced.
  • inductors 2 adjacent to the initial heating zone Z1 are covered by the container, then these inductor (s) 2 are added to the list of inductors 2 constituting the subset of inductors 2 of the new heating zone Z4. provided that they are free, that is to say not already assigned to at least one other initial heating zone Z2 not moved.
  • the inductors 2 belonging to a subset of inductors 2 forming a new heating zone Z4 are assigned to a list of inductors 2 used for a new heating zone Z4 of cooking plan 3.
  • the indication of the new heating zone Z4 is signaled to the user either by an audible signal emitted via the control means of the induction hob 1, or by a visual signal through the control means. 6 display of the control keypad 4.
  • the operating parameters, such as the target power and / or the cooking time, of the initial heating zone Z1 are automatically assigned to the new heating zone Z4.
  • control keyboard 4 In this way, no user intervention on the control keyboard 4 is necessary so as to improve the ergonomics of use of the induction cooktop 1.
  • the subset of inductors 2 of the new heating zone Z4 at least partially comprises inductors 2 of the inductor subassembly 2 of the initial heating zone Z1 following displacement of the receptacle relative to the hob 3 , then no confirmation of declaration of said container associated with the new heating zone Z4 is requested from the user and at least one operating parameter of the initial heating zone Z1 displaced is automatically assigned to the new heating zone Z4 of to improve the ergonomics and flexibility of the induction hob 1.
  • the automatic allocation of at least one operating parameter of an initial heating zone Z1 displaced to a new heating zone Z4 can be implemented provided that the time elapsed between the detecting the displacement of a container from the initial heating zone Z1 and the detection of a new heating zone Z4 associated with the container is included in a predetermined time interval, which may be less than, for example, 20 seconds.
  • this time interval between the displacement detection of a container of the initial heating zone and the detection of the new heating zone is in no way limiting and may be different.
  • Such a case of operation makes it easier to use the induction hob 1, especially when the container contains one or more foodstuffs to be stirred frequently, such as, for example, for sautéed vegetables or for turning pancakes.
  • the subset of inductors 2 of the initial heating zone Z1 displaced is completely empty, of such that the container does not cover any inductor 2 of the subset of inductors 2 of each initial heating zone Z1, Z2, then a step of detecting at least one new heating zone Z3 consisting of a subset of inductors 2 covered at least partially by an object is implemented, wherein said inductors 2 are not assigned to at least one initial heating zone Z1, Z2.
  • At least one new heating zone Z3 is determined following the displacement of at least one container of an initial heating zone Z1 with respect to the hob 3.
  • the inductors 2 belonging to a subset of inductors 2 forming a new heating zone Z3 are assigned to a list of inductors 2 used for a new heating zone Z3 of the hob 3.
  • the control method comprises a step of indicating said at least one new heating zone Z3 consisting of a subset of inductors 2 at least partially covered by an object.
  • the indication of the said at least one new heating zone Z3 is signaled to the user either by an audible signal emitted by means of the control means of the induction cooktop 1, or by a visual signal through the display means 6 of the control keyboard 4.
  • the object covering the subset of inductors 2 of the said at least one new heating zone Z3 detected by the control means of the induction hob 1 can be either a container adapted to cooperate with inductors to heat the heaters. food contained therein, an object incompatible with the operation of an induction cooktop 1, such as for example a container lid.
  • the control method also comprises a declaration confirmation step of the object associated with a new heating zone Z3.
  • the steps of indicating said at least one new Z3 heating zone detected and confirmation of the declaration of the object associated with this new heating zone Z3 make it possible to avoid the undesired heating of a container or of a placed object. on the cooking plane 3 following the displacement of a container associated with a heating zone Z1 initially detected, in the case where said at least one new heating zone Z3 is distinct from said at least one initial heating zone Z1, Z2 .
  • such an induction hob 1 allows on the one hand guarantee that a container initially present on the hob 3 and having been moved or not is not heated later without the confirmation of the user, and secondly to ensure that an incompatible object, such as for example a metal container lid, placed on the cooking surface 3 is not heated following the displacement of a container initially present on the hob 3.
  • an incompatible object such as for example a metal container lid
  • Such an induction hob 1 makes it possible to solve the disadvantages of an automatic detection of a container or object placed on the hob 3 following the displacement of a container associated with a heating zone Z1 initially detected so as to avoid heating either a container not intended to be heated placed on the hob 3, or an incompatible object placed on the hob 3.
  • the declaration confirmation of the object associated with a new heating zone Z3 can be implemented for example by activating a selection means 5 of the control keyboard 4, and in particular by pressing on a touch pad or a touch screen.
  • the cancellation of the declaration of the object associated with a new heating zone Z3 can also be implemented for example by the activation of a selection means 5 of the control keyboard 4, and in particular by a pressing a touch pad or a touch screen.
  • the confirmation and the cancellation of declaration of an object associated with a new heating zone Z3 can be implemented respectively by a short press on a touch pad or an area of a touch screen assigned to the new heating zone Z3 detected, and by a long press on the same touch pad or the same zone of the touch screen assigned to the new heating zone Z3 detected.
  • the step of searching for at least one new heating zone Z3 consisting of a subset of inductors 2 covered at least partially by an object is canceled.
  • said declaration confirmation step is to be executed so that said object detected at the location of said hot zone news Z3 is taken into consideration as a container to be heated.
  • control means of the table of induction cooking 1 In the case where an object is detected by the control means of the table of induction cooking 1 in a restricted period of time following the displacement of the container associated with an initial heating zone Z1, said control means await a declaration confirmation input signal of the object associated with a new heating zone Z3 so as to ensure that the object is not a container placed on the hob 3 not to be heated or an incompatible object placed on the hob 3 not to be heated.
  • This new heating zone Z3 is thus put into operation only after confirmation of the declaration of the object associated with the new heating zone Z3 by the user since the operation command of the new heating zone Z3 detected may not be desired. by the user and only related to the automatic detection of object on the hob 3 not assigned to an initial heating zone Z1, Z2 following the displacement of the container associated with an initial heating zone Z1.
  • the container is deposited on the hob 3 and a new heating zone Z3 associated with this container is detected by the control means of the induction hob 1 after a period of time less than the predetermined value.
  • P being for example of the order of one second, starting since the detection of at least one displacement of a container of an initial heating zone Z1.
  • the subset of inductors 2 constituting the new heating zone Z3 consists of inductors 2 not belonging to an initial heating zone Z1 displaced.
  • the inductors 2 associated with said initial heating zone Z1 are decommissioned.
  • these inductors 2 are decommissioned from the list of inductors 2 used for an initial heating zone Z1 of the hob 3 so as to consider them free and allow their allocation to a new heating zone Z3 following a displacement of a container on the hob 3 or the addition of a new container on the hob 3.
  • the object detected on the hob 3 by the control means of the induction hob 1 is considered to be a container placed on the hob 3 voluntarily by the user so as to apply to the minus one same operating parameter of the initial heating zone Z1 moved.
  • this new heating zone Z3 is put into operation automatically with allocation of at least one operating parameter, such as, for example, a reference power and / or a cooking time, of the initial heating zone Z1 displaced. since the displacement is taken into account as a voluntary action of the user to remove a container outside the hob 3 and reposition it or another on the hob to continue heating.
  • at least one operating parameter such as, for example, a reference power and / or a cooking time
  • the declaration confirmation of the object associated with a new heating zone Z3 is not implemented since the object placed on the hob 3 is considered to be the container belonging to the zone. initial heater Z1 or another container to be heated.
  • the subset of inductors 2 constituting the new heating zone Z3 may consist of inductors 2 belonging or not to an initial heating zone Z1 displaced.
  • the step of detecting at least one new heating zone Z3 consisting of a subset of inductors 2 at least partially covered by an object is implemented for inductors 2 not adjacent to at least one zone initial heating Z2 not displaced.
  • the subset of inductors 2 of the new heating zone Z3 does not include inductors 2 adjacent to those defined by at least one initial heating zone Z2 that is not displaced so as to avoid any heat dissipation. a container covering an initial heating zone Z2 not moved towards the object of the new heating zone Z3.
  • the positioning of an object on a new heating zone Z3 relative to an initial heating zone Z2 not displaced, where the inductors 2 of at least one initial heating zone Z2 not displaced and the inductors 2 of at least one new heating zone Z3 are not adjacent allows on the one hand to avoid heat transfer from one container to another and on the other hand to avoid disturbances of operation of the induction cooktop 1 related the proximity of these containers, caused in particular by different switching frequencies for the supply of inductor subassemblies 2 separate heating zones Z2, Z3 inducing noise.
  • the declaration confirmation step of the object is implemented then at least one same operating parameter of the initial heating zone Z1 displaced is applied to the new heating zone Z3 associated with the said object.
  • At least one operating parameter of the initial heating zone Z1 such as, for example, a desired power and / or a cooking time, is assigned to the new heating zone Z3 detected following the displacement of a container by relative to the hob 3 from said initial heating zone Z1.
  • the user can remove a container from an initial heating zone Z1 of the hob 3, depositing this container on the hob 3 in a zone distinct from said at least one initial heating zone Z1, Z2 which is detected as a new heating zone Z3, and assigning the operating parameter (s) of the initial heating zone Z1 to the new heating zone Z3 by means of the confirmation of declaration of the object associated with the new heating zone Z3.
  • the object placed on the hob 3 is not considered a container to be heated since the user has not confirmed the declaration thereof during a predetermined duration D allocated to this action.
  • a container addition step must be controlled by the user so as to perform a detection step similar to the first detection step of the control method.
  • the declaration of addition of a new container on the hob 3 may be implemented for example by the activation of a selection means 5 of the control keyboard 4, and in particular by a touch on a touch key or a touch screen.
  • the flow of the predetermined duration D of the declaration confirmation of the object associated with a new heating zone Z3 can for example start following the indication of said at least one new heating zone Z3 consisting of a subset of inductors 2 covered at least partially by an object.
  • the predetermined duration D of confirmation of declaration of the object associated with a new heating zone Z3 may be of the order of one minute.
  • the means of display 6 of the control keyboard 4 display the different new heating zones Z3 so that the user can select through the selection means 5 a new heating zone Z3 and then the next to confirm or not the declaration of the different objects on the cooking plan 3.
  • At least one and the same operating parameter of an initial heating zone Z1 displaced can be applied to a new heating zone Z3 associated with an object according to the selection order of the new heating zones Z3 by means of selection 5.
  • a step of detecting at least one heating zone Z3 consisting of a subset of inductors 2 at least partially covered by an object is repeated on all of said inductors 2 of said induction hob 1 according to a predetermined periodicity.
  • a new heating zone Z3 is periodically searched by the control means of the induction hob 1 following removal of a container associated with an initial heating zone Z1 so as to allow the reuse of at least one operating parameter of said initial heating zone Z1.
  • the user can perform operations outside the hob 3 with the container removed from an initial heating zone Z1 while retaining the operating parameter or parameters of this initial heating zone Z1 for later reuse. on a new Z3 heating zone to improve the ergonomics and flexibility of use of the induction hob 1.
  • the predetermined periodicity of the repetition of the detection of at least one heating zone Z3 consisting of a subset of inductors 2 covered at least partially by an object may be of the order 1 or 2 seconds.
  • the object detected on the hob 3 by the control means of the induction hob 1 is considered to be a container placed on the hob 3 voluntarily by the user so as to apply to the minus one operating parameter of the initial heating zone Z1 displaced.
  • this new heating zone Z3 is put into operation automatically with allocation of at least one operating parameter, such as, for example, a reference power and / or a cooking time, of the initial heating zone Z1 displaced. since the displacement is taken into account as a voluntary action of the user to remove a container outside the hob 3 and reposition it or another on the hob 3 to continue heating.
  • at least one operating parameter such as, for example, a reference power and / or a cooking time
  • the declaration confirmation of the object associated with a new heating zone Z3 is not implemented since the object placed on the hob 3 is considered to be the container belonging to the zone. initial heater Z1 or another container to be heated.
  • the inductors 2 belonging to a subset of inductors forming a new heating zone Z3, these inductors 2 are assigned to a list of inductors 2 used for a new heating zone Z3 of cooking plan 3.
  • the indication of said at least one new heating zone Z3 is signaled to the user either by an acoustic signal emitted by means of the control means of the induction hob 1, or by a visual signal at the through display means 6 of the control keyboard 4.
  • the subset of inductors 2 constituting the new heating zone Z3 may consist of inductors 2 belonging or not to an initial heating zone Z1 displaced.
  • a new heating zone Z3 consisting of a subset of inductors 2 at least partially covered by an object if a new heating zone Z3 consisting of a sub-assembly -et set of inductors 2 at least partially covered by an object is detected in a period of time greater than the predetermined duration value P, where said inductors 2 are not assigned to at least one initial heating zone Z2 not displaced, then a operating step of said new heating zone Z3 is implemented with at least one same operating parameter of said initial heating zone Z1 displaced.
  • At least one new heating zone Z3 is determined following the moving at least one container of an initial heating zone Z1 with respect to the hob 3, and the object detected on the hob 3 by the control means of the induction hob 1 is considered as a container placed on the cooking surface 3 voluntarily by the user so as to apply to it at least one operating parameter of the initial heating zone Z1 displaced.
  • this new heating zone Z3 is put into operation automatically with allocation of at least one operating parameter, such as, for example, a reference power and / or a cooking time, of the initial heating zone Z1 displaced. since the displacement is taken into account as a voluntary action of the user to remove a container outside the hob 3 and reposition it on the hob to continue heating.
  • at least one operating parameter such as, for example, a reference power and / or a cooking time
  • the object detected on the hob 3 by the control means of the induction hob 1 is considered to be a container placed on the hob 3 voluntarily by the user so as to apply to the minus one operating parameter of the initial heating zone Z1 displaced.
  • this new heating zone Z3 is put into operation automatically with allocation of at least one operating parameter, such as, for example, a reference power and / or a cooking time, of the initial heating zone Z1 displaced. since the displacement is taken into account as a voluntary action of the user to remove a container outside the hob 3 and reposition it or another on the hob 3 to continue heating.
  • at least one operating parameter such as, for example, a reference power and / or a cooking time
  • the declaration confirmation of the object associated with a new heating zone Z3 is not implemented since the object placed on the hob 3 is considered to be the container belonging to the zone. initial heater Z1 or another container to be heated.
  • the inductors 2 belonging to a subset of inductors forming a new heating zone Z3, these inductors 2 are assigned to a list of inductors 2 used for a new heating zone Z3 of cooking plan 3.
  • the indication of said at least one new heating zone Z3 is signaled to the user either by an audible signal emitted via the control means of the induction hob 1, or by a visual signal through the display means 6 of the control keyboard 4.
  • the subset of inductors 2 constituting the new heating zone Z3 may consist of inductors 2 belonging or not to an initial heating zone Z1 displaced.
  • a container addition step must be controlled by the user so as to perform a detection step similar to the first detection step of the control method.
  • the declaration of addition of a new container on the hob 3 may be implemented for example by the activation of a selection means 5 of the control keyboard 4, and in particular by a touch on a touch key or a touch screen.
  • the flow of the predetermined duration T of detection of an object placed on the hob 3 starts following the detection of the displacement of a container covering the subset of inductors 2 of an initial heating zone Z1.
  • the detection of the displacement of a receptacle covering the inductor subassembly 2 of an initial heating zone Z1 can be signaled to the user through the display means 6 of the control keyboard 4 so as to indicate the moment from which the flow of the predetermined duration T is taken into account.
  • the predetermined duration T of detection of an object placed on the cooking plane 3 may be of the order of twenty seconds.
  • the inductors 2 associated with said initial heating zone Z1 are decommissioned as soon as they are no longer covered. by a container.
  • these inductors 2 are decommissioned from the list of inductors 2 used for a heating zone Z1 of the hob 3 so as to consider them free and allow their allocation to a new heating zone Z3, Z4 following a displacement of a container on the hob 3 or the addition of a new container on the hob 3.
  • the inductors 2 could be reassigned to said at least one new heating zone Z3, Z4, and the inductors 2 allocated to an initial heating zone Z2 not moved are assigned to the list of inductors 2 covered by a container.
  • the method of operating a set of inductors of an induction hob avoids undesired heating of the container or object placed on the hob following the displacement.
  • a container associated with a heating zone initially detected in the case where said at least one new heating zone is distinct from said at least one initial heating zone.
  • an induction hob makes it possible on the one hand to guarantee that a container initially present on the hob and having been moved is not heated subsequently without the confirmation of the user. and on the other hand to ensure that an incompatible object, such as for example a metal container lid, placed on the cooking surface is not heated following the displacement of a container initially present on the plane of cooking. cooking.
  • Such an induction hob solves the drawbacks of an automatic detection of a container or object placed on the hob following the displacement of a container associated with a heating zone initially detected so as to avoid heating. either a container not intended to be heated placed on the hob, or an incompatible object placed on the hob.
  • the present invention is neither limited in the number of inductors distributed in a two-dimensional grid in the hob of the induction hob, nor in the number of heating zones that can be defined on the hob. from the position of a container covering a subset of inductors.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Induction Heating Cooking Devices (AREA)
  • General Induction Heating (AREA)
EP11184215.9A 2010-10-07 2011-10-06 Procédé de commande en fonctionnement d'un ensemble d'inducteurs d'une table de cuisson à induction et table de cuisson à induction associée Active EP2440009B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1003982A FR2966003B1 (fr) 2010-10-07 2010-10-07 Procede de commande en fonctionnement d'un ensemble d'inducteurs d'une table de cuisson a induction et table de cuisson a induction associee

Publications (3)

Publication Number Publication Date
EP2440009A2 EP2440009A2 (fr) 2012-04-11
EP2440009A3 EP2440009A3 (fr) 2012-11-21
EP2440009B1 true EP2440009B1 (fr) 2016-08-31

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EP11184215.9A Active EP2440009B1 (fr) 2010-10-07 2011-10-06 Procédé de commande en fonctionnement d'un ensemble d'inducteurs d'une table de cuisson à induction et table de cuisson à induction associée

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EP (1) EP2440009B1 (es)
ES (1) ES2605245T3 (es)
FR (1) FR2966003B1 (es)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2800453B1 (en) 2013-04-30 2018-09-19 Electrolux Appliances Aktiebolag Hob and methods for operating such a hob
EP2822355B1 (en) * 2013-07-03 2016-12-14 ELECTROLUX PROFESSIONAL S.p.A. Cooking hob and operation method thereof
CN112393283B (zh) * 2019-08-12 2023-04-07 佛山市顺德区美的电热电器制造有限公司 烹饪器具
DE102020208643A1 (de) 2020-07-09 2022-01-13 Eberspächer Catem Gmbh & Co. Kg Heizzelle und PTC-Heizeinrichtung umfassend eine solche
EP4250872A1 (en) * 2022-03-25 2023-09-27 Electrolux Appliances Aktiebolag Induction cooking hob
EP4297531A1 (en) * 2022-06-20 2023-12-27 Electrolux Appliances Aktiebolag Cooking appliance and method of operating a cooking appliance

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2863039B1 (fr) * 2003-11-27 2006-02-17 Brandt Ind Procede de chauffage d'un recipient pose sur une table de cuisson a moyens de chauffage associe a des inducteurs
ES2329326B1 (es) * 2007-10-17 2010-08-30 Bsh Electrodomesticos España, S.A. Dispositivo de coccion y procedimiento con un dispositivo de coccion.
ES2358818B1 (es) * 2009-01-22 2012-04-02 Bsh Electrodomesticos España, S.A Procedimiento para accionar un campo de cocción con una pluralidad de elementos de calentamiento.

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Publication number Publication date
EP2440009A2 (fr) 2012-04-11
ES2605245T3 (es) 2017-03-13
FR2966003B1 (fr) 2015-12-11
EP2440009A3 (fr) 2012-11-21
FR2966003A1 (fr) 2012-04-13

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