EP3868174A1 - Dispositif à induction - Google Patents

Dispositif à induction

Info

Publication number
EP3868174A1
EP3868174A1 EP19790303.2A EP19790303A EP3868174A1 EP 3868174 A1 EP3868174 A1 EP 3868174A1 EP 19790303 A EP19790303 A EP 19790303A EP 3868174 A1 EP3868174 A1 EP 3868174A1
Authority
EP
European Patent Office
Prior art keywords
sensor elements
unit
induction
sensor
activity
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.)
Pending
Application number
EP19790303.2A
Other languages
German (de)
English (en)
Inventor
Pablo Jesus Hernandez Blasco
Ignacio Lope Moratilla
Paul Muresan
Jose Manuel Palacios Gasos
Diego Puyal Puente
Francisco Villuendas Lopez
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BSH Hausgeraete GmbH
Original Assignee
BSH Hausgeraete GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by BSH Hausgeraete GmbH filed Critical BSH Hausgeraete GmbH
Publication of EP3868174A1 publication Critical patent/EP3868174A1/fr
Pending legal-status Critical Current

Links

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
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/02—Induction heating
    • H05B6/06—Control, e.g. of temperature, of power
    • H05B6/062—Control, e.g. of temperature, of power for cooking plates or the like
    • H05B6/065—Control, e.g. of temperature, of power for cooking plates or the like using coordinated control of multiple induction coils
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/02—Induction heating
    • H05B6/10—Induction heating apparatus, other than furnaces, for specific applications
    • H05B6/12—Cooking devices
    • H05B6/1209—Cooking devices induction cooking plates or the like and devices to be used in combination with them
    • H05B6/1245—Cooking devices induction cooking plates or the like and devices to be used in combination with them with special coil arrangements
    • H05B6/1272—Cooking devices induction cooking plates or the like and devices to be used in combination with them with special coil arrangements with more than one coil or coil segment per heating zone
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B2213/00—Aspects relating both to resistive heating and to induction heating, covered by H05B3/00 and H05B6/00
    • H05B2213/03—Heating plates made out of a matrix of heating elements that can define heating areas adapted to cookware randomly placed on the heating plate
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B2213/00—Aspects relating both to resistive heating and to induction heating, covered by H05B3/00 and H05B6/00
    • H05B2213/05—Heating plates with pan detection means
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B2213/00—Aspects relating both to resistive heating and to induction heating, covered by H05B3/00 and H05B6/00
    • H05B2213/07—Heating plates with temperature control means

Definitions

  • the invention relates to an induction device according to the preamble of claim 1.
  • an induction device is already known with a plurality of induction units arranged in a matrix and with a sensor unit for the detection of a sensor parameter, which is an activity parameter of the
  • Induction units is formed.
  • an electrical parameter in particular an electrical voltage and / or an electric current, is detected in the induction unit by means of an additional circuit connected to the induction unit.
  • the object of the invention is in particular to provide a generic device with improved properties with regard to the detection of certain parameters.
  • the object is achieved according to the invention by the features of claim 1, while advantageous refinements and developments of the invention can be found in the subclaims.
  • the invention is based on an induction device, in particular one
  • Induction hob device with at least one induction unit, in particular with at least one induction heating unit, with at least one sensor unit, which is provided for detection of at least one sensor parameter, and with at least one control unit, which is provided for evaluating the sensor parameter.
  • the sensor unit be installed above the
  • Induction unit is arranged and has a plurality of distributed, in particular matrix-like presence sensor elements, which are provided for the detection of at least one sensor parameter designed as a presence parameter of at least one object, in particular at least one set of cooking utensils, and / or a plurality of distributed, in particular matrix-like arranged
  • Activity characteristic of the induction unit designed sensor characteristic are provided, and / or a plurality of distributed, in particular arranged in a matrix
  • Has temperature sensor elements that are used for detection of at least one Temperature parameter at least one unit trained sensor parameter are provided.
  • Detection of certain parameters can be achieved.
  • a compact design can be achieved in particular.
  • precise detection can be made possible, in particular due to the spatial proximity of the sensor unit to the induction unit and / or to a set-up plate and / or to a cookware.
  • An independence of the sensor unit and the induction unit can be achieved, in particular due to a modular and / or independent character of the sensor unit relative to the induction unit, whereby in particular an influence of a change in the sensor unit and / or the induction unit on the induction unit and / or Sensor unit can be avoided.
  • Induction unit are formed. Due to the large number of presence sensor elements, a high resolution can be achieved, which means that even small objects and / or cooking utensils can be detected without any problems.
  • the activity sensor elements enable precise detection of an activity of the induction unit, as a result of which, in particular, incorrect activation of an induction unit can be avoided and / or a high safety standard can be provided.
  • an environmentally friendly and / or economical configuration can be achieved, in particular by exclusively activating the required induction units, as a result of which, in particular, a high level of operating comfort can be achieved.
  • an additional circuit for detecting an electrical voltage and / or an electrical current of the induction unit can be dispensed with, as a result of which, in particular, low costs can be achieved.
  • thermosensor elements in particular, a precise detection of a temperature of the unit can be made possible, whereby in particular optimal ones
  • Cooking results can be achieved.
  • overheating can occur Unit, which could in particular be the induction unit and / or the base plate, can be avoided, whereby in particular a long-lasting design can be achieved.
  • burning and / or overcooking of a food to be cooked can be avoided, as a result of which a high level of operating convenience can be achieved.
  • Induction hob device is to be understood in particular to mean at least a part, in particular a subassembly, of an induction device, in particular an induction hob.
  • the induction device is preferably provided for inductive energy transmission to at least one object.
  • the object could be
  • the object is preferably a cookware.
  • the object can be identical to the object, which in particular is used for detection by the large number of objects
  • Presence sensor elements are provided, in particular in the event that the object is intended for inductive energy transmission.
  • the induction device in particular in the form of an induction hob device, could, for example, have at least one stand plate, in particular in the form of a hob plate, which could be provided, in particular, for placing cookware, in particular for heating the cookware, and in particular together with at least one housing unit of the induction device, at least one Outer housing, in particular at least one hob outer housing, in particular at least one having the induction device
  • the induction device which in particular has the mounting plate, in particular in the form of a hob plate, could be provided for delivery and / or sale, in particular together with the, in particular as
  • the induction device which is designed in particular as an induction hob device, could, for example, be free of a set-up plate and in particular be provided in an arrangement below a set-up plate, in particular as a work plate and advantageously as a kitchen worktop.
  • the induction device which is in particular free of one, in particular as
  • Worktop-trained, stand-up plate could be for delivery and / or a sale may be provided separately from at least one, in particular designed as a worktop.
  • the set-up plate in particular designed as a worktop and advantageously as a kitchen worktop, could, for example, be part of at least one cooking system, which in particular could have the induction device and in particular the set-up plate, in particular as a worktop and advantageously designed as a kitchen worktop.
  • the induction device has at least two, advantageously at least three, particularly advantageously at least four, preferably at least eight and particularly preferably a multiplicity of induction units.
  • the induction units are in particular distributed and advantageously arranged in a matrix. Under one
  • induction unit is to be understood in particular as a unit which, in at least one operating state, energy, in particular in the form of an alternating electromagnetic field, advantageously for the purpose of an inductive one
  • the induction unit is advantageously designed as an induction heating unit and, in at least one operating state, supplies energy in particular to at least one object designed as cookware for the purpose of heating the cookware, in particular as a function of activation of the induction unit by the control unit.
  • control unit is provided to control and / or regulate at least the induction unit.
  • a “control unit” is to be understood in particular as an electronic unit which, in at least one operating state, has at least one device function and / or at least one device main function,
  • the control unit has, in particular, at least one computing unit and, in particular, in addition to the computing unit, at least one storage unit in which, in particular, at least one control and / or regulating program is stored, which in particular relates to a
  • control unit is provided to control and / or regulate at least one, in particular electrical and / or electronic cooktop unit different from the control unit.
  • control unit is provided to control and / or regulate at least one, in particular electrical and / or electronic cooktop unit different from the control unit.
  • a “cooktop unit” in particular at least a part, in particular a part
  • a cooktop in particular an induction cooktop, understood become.
  • At least one cooktop unit could, for example, be at least one
  • a “sensor unit” is to be understood in particular to mean a unit which has at least one sensor element designed as a detector for detecting at least one sensor parameter and which is in particular intended to output a value which characterizes the sensor parameter, the
  • Sensor parameter is advantageously a physical and / or chemical variable.
  • the sensor unit could actively detect the sensor parameter in at least one operating state, such as in particular by generating and emitting a measurement signal, in particular an electrical and / or optical measurement signal.
  • the sensor unit could passively detect the sensor parameter in at least one operating state, such as in particular by detecting at least one change in properties of at least one sensor component and / or the sensor element.
  • at least a large part of the and advantageously each of the sensor elements of the plurality of sensor elements has at least one detector for detecting at least one sensor parameter.
  • At least a large part of a number of elements should in particular be understood to mean a proportion of at least 70%, in particular at least 80%, advantageously at least 90% and preferably at least 95% of the number of elements.
  • a “multitude” of objects, in particular sensor elements and / or induction units in particular a number of at least six, in particular at least nine, advantageously at least twelve, particularly advantageously at least sixteen, preferably at least twenty-five, particularly preferably at least thirty-six , preferably be understood by at least forty-nine and particularly preferably by at least sixty-four objects.
  • Induction unit is arranged, it should be understood in particular that the
  • Sensor unit in an installation position in at least one vertical direction is at a greater distance from a surface than the induction unit and / or that the sensor unit in an installation position in at least one vertical direction is at a smaller distance from at least one set of cooking utensils and / or from the base plate has as the induction unit.
  • the vertical direction is in an installed position
  • Stand plate aligned The surface could be, for example, a floor and / or a floor and / or a footprint.
  • Essentially parallel is to be understood here to mean in particular an orientation of a direction relative to a reference direction, in particular in a plane, the direction relative to the reference direction being a deviation of in particular a maximum of 8 °, advantageously a maximum of 5 ° and particularly advantageously a maximum 2 °.
  • the expression “essentially perpendicular” is intended to define an orientation of a direction relative to a reference direction, the direction and the
  • Reference direction viewed in particular in one plane, enclose an angle of 90 ° and the angle has a maximum deviation of, in particular, a maximum of 8 °, advantageously a maximum of 5 ° and particularly advantageously a maximum of 2 °.
  • a “main extension plane” of an object is to be understood in particular to mean a plane which is parallel to a largest side surface of a smallest imaginary geometric cuboid, which still just completely surrounds the object, and in particular runs through the center of the cuboid.
  • the sensor unit could be arranged in an installed position, in particular on a side of the base plate facing away from the induction unit and / or toward the cooking utensil.
  • the sensor unit is advantageously arranged in an installed position on a side of the base plate facing the induction unit and / or facing away from the cookware.
  • the sensor unit is arranged in an installed position, in particular in the vertical direction, between the base plate and the induction unit.
  • the sensor unit could be arranged in a mounting position in a close range above the induction unit and in particular on the
  • the sensor unit could have at least one substrate on which the plurality of sensor elements of the sensor unit could be arranged in at least one assembled state.
  • the substrate could for example be plate-like and in particular have a thickness which could be much smaller than a length extension and / or a transverse extension of the substrate.
  • the substrate could be formed at least for the most part from at least one plastic, such as polyimide.
  • the substrate could, for example, be a printed circuit board and / or a film.
  • At least one of the, in particular at least a large part, and advantageously each of the sensor elements, in particular the activity sensor elements and / or the presence sensor elements and / or the temperature sensor elements, could be arranged on the substrate as a conductor track.
  • Activity sensor elements and / or the presence sensor elements and / or the temperature sensor elements could, in particular, at least largely consist of copper and / or aluminum and / or nickel.
  • the sensor unit could be arranged in an installation position, in particular in a vicinity of the mounting plate and advantageously on the mounting plate.
  • the sensor unit could be fixed in an installed position, in particular on the mounting plate, in particular by means of at least one non-positive and / or positive and / or advantageously material connection, and could be designed, for example, as at least one coating.
  • “At least for the most part” is to be understood in particular to mean a proportion, in particular a mass fraction and / or volume fraction, of at least 70%, in particular of at least 80%, advantageously of at least 90% and preferably of at least 95%.
  • Sensor elements and / or on induction units should in particular be understood that when viewing a vertical projection of the objects into a plane, at least a first object of the objects is at a distance of at most 300%, in particular of at most 250%, from at least a second object of the objects.
  • a maximum of 200% particularly advantageously of a maximum of 175%, preferably of a maximum of 150% and particularly preferably of a maximum of 125% of a maximum
  • Extension of a larger one of the objects in the plane and that the first object is at least a distance of at least 300%, in particular of at least 350%, advantageously of at least 400%, particularly advantageously of at least 450%, preferably of at least from a third object of the objects 500% and particularly preferably at least 600% of a maximum extension of a larger one of the objects in the plane.
  • a distance of at least 300% in particular of at least 350%, advantageously of at least 400%, particularly advantageously of at least 450%, preferably of at least from a third object of the objects 500% and particularly preferably at least 600% of a maximum extension of a larger one of the objects in the plane.
  • Sensor elements and / or on induction units should in particular be understood to mean a large number of objects which are arranged regularly, advantageously in the form of rows and columns and preferably in the form of a matrix with rows and columns.
  • the rows and columns of the matrix define at least two axes of the matrix.
  • the axes of the matrix could be oriented obliquely relative to one another.
  • the axes of the matrix are advantageously oriented at least substantially perpendicular to one another.
  • the matrix of objects could, for example, be a 3x3, in particular a 4x4, advantageously a 5x5, particularly advantageously a 6x6, preferably a 7x7 and particularly preferably an 8x8 matrix of objects.
  • the matrix can be particularly advantageously an XxY matrix in which at least one of the variables X and Y has a value of at least three, in particular at least four, advantageously at least five, particularly advantageously at least eight, preferably at least twelve and particularly preferably at least fifteen.
  • a “presence sensor element” is to be understood in particular as a sensor element which detects at least one presence and / or absence of at least one object in at least one operating state.
  • the presence parameter of the object identifies at least one presence and / or absence of the object.
  • Presence sensor element could be provided, in particular in addition to the presence and / or absence of at least one object, for example for the detection of at least one shape and / or at least one shape and / or at least one size and / or at least induction suitability and / or at least one material of the object be.
  • At least one object could, for example, be cutlery and / or kitchenware and / or a coin.
  • At least one object is advantageously a cookware which is arranged, in particular set up, in particular for heating above the induction unit and advantageously above the stand-up plate.
  • an “activity sensor element” is to be understood in particular as a sensor element which detects at least one activity state of the induction unit in at least one operating state.
  • the activity parameter of the induction unit identifies at least one activity state of the induction unit.
  • the activity sensor element could detect whether the induction unit is in an activated state or in a deactivated state.
  • the activity sensor element in the form of the activity parameter could, for example, detect a degree of activity of the induction unit, which in particular could indicate which heating power the
  • the activity sensor element detects the activity parameter of the induction unit by detecting one in the
  • Activity sensor element induced voltage which is particularly induced by an alternating electromagnetic field provided by the induction unit.
  • a “temperature sensor element” is to be understood in particular as a sensor element which detects at least one temperature of at least one unit in at least one operating state.
  • the temperature sensor element is to be understood in particular as a sensor element which detects at least one temperature of at least one unit in at least one operating state.
  • Temperature characteristic of the unit at least one temperature of the unit. At least one io
  • Unit could be, for example, the induction unit and / or the set-up plate and / or the cookware and / or at least one item to be cooked in the cookware.
  • control unit could be provided to determine the presence and / or absence of the object, in particular depending on the
  • the temperature parameter in particular in the case of at least one small object. This could in particular enable a particularly precise detection of the presence and / or absence of the object.
  • Provided is to be understood to mean, in particular, specially programmed, designed and / or equipped.
  • the fact that an object is provided for a specific function should in particular be understood to mean that the object fulfills and / or executes this specific function in at least one application and / or operating state.
  • the sensor unit be particularly advantageous when viewing a vertical projection of a footprint, which is defined at least by the induction unit, on one level over an area share of at least 50%, in particular at least 60%, advantageously at least 70% of at least 80%, preferably of at least 90% and particularly preferably of at least 95% of a surface spanned by the installation surface in the plane.
  • the sensor unit particularly advantageously extends over an entire surface extent spanned by the footprint in the plane.
  • a “footprint” is to be understood in particular to mean a surface portion of the mounting plate which is provided for mounting the object, in particular for the purpose of transmitting energy to the object.
  • the installation surface is advantageously designed as a cooking surface and is provided in particular for setting up cooking utensils, in particular for the purpose of heating the cooking utensils. In particular, at least a large part and advantageously all of them are in an installed position
  • Induction units arranged below the installation area.
  • the footprint is defined in particular by an arrangement of at least a large part and advantageously all of the induction units.
  • At least one of the, in particular at least a large part of and advantageously each of the activity sensor elements and at least one of the, in particular at least a large part of and advantageously each of the presence sensor elements could be designed differently from one another.
  • Activity sensor elements and at least one of the, in particular at least a large part of, and advantageously each of the presence sensor elements are embodied in one piece and in particular identically with one another, in particular as one and the same
  • One-piece is to be understood in particular to be understood to be at least integrally bonded, for example by means of a welding process, an adhesive process, a gating process and / or another, which is useful to the person skilled in the art
  • process and / or advantageously understood to be formed in one piece, such as by a manufacture from a casting and / or by a
  • Presence sensor elements each have at least one induction coil.
  • At least one of the, in particular at least a large part of, and advantageously each of the activity sensor elements and / or the presence sensor elements is arranged in at least one assembled state, in particular in an oscillating circuit, which is in particular part of the induction device.
  • the activity sensor elements and / or the presence sensor elements is arranged in at least one assembled state, in particular in an oscillating circuit, which is in particular part of the induction device.
  • Induction device in particular per activity sensor element and / or per Presence sensor element, at least one resonance capacitor and in particular at least one electrical resistor, in particular an electrical one
  • Transverse resistance which are arranged in particular together with the induction coil and advantageously in the resonant circuit. Especially in the case of
  • the sensor unit detects the as
  • Presence parameter designed sensor parameter in particular by changing a resonance frequency of the induction coil and / or by changing one
  • Resonance frequency of the resonant circuit and / or by changing an inductance of the induction coil. This enables an optimal detection of the sensor parameter, in particular in a structurally simple manner, whereby particularly low costs and / or high detection quality can be achieved.
  • Presence sensor elements and at least one of the, in particular at least a large part of and, advantageously, each of the temperature sensor elements can be embodied in one piece and in particular in an identical manner.
  • a respective temperature sensor element could, for example, be designed as a resistance wire, which in particular is wound into a coil and in particular the induction coil of the respective one
  • Activity sensor element and / or the respective presence sensor element could define.
  • Presence sensor elements and at least one of the, in particular at least a large part of, and advantageously each of the temperature sensor elements are designed differently from one another. This allows in particular a high degree of flexibility, in particular with regard to an arrangement of the temperature sensor elements relative to the
  • Activity sensor elements and / or to the presence sensor elements are made possible. In particular, simple and / or quick and / or inexpensive production can be achieved.
  • Presence sensor elements and at least one of the, in particular at least a large part of, and advantageously each of the temperature sensor elements are arranged at mutually different positions of at least one substrate of the sensor unit.
  • at least one of the, in particular at least a large part of and advantageously each of the activity sensor elements and / or presence sensor elements is arranged on a first layer of the substrate and at least one of the, in particular at least a large part of and advantageously each of the temperature sensor elements is arranged on at least a second layer of the substrate, which is opposite the first position of the substrate with respect to a main plane of extent of the substrate.
  • Presence sensor elements and at least one of the, in particular at least a large part of, and advantageously each of the temperature sensor elements are electrically connected in series.
  • one of the activity sensor elements and / or one of the presence sensor elements and one of the temperature sensor elements are electrically connected in series. In this way, optimal detection can be achieved, in particular by means of a simple electrical circuit, which in particular enables quick and / or uncomplicated installation.
  • Presence sensor elements and at least one of the, in particular at least a large part of, and advantageously each of the temperature sensor elements are integrally formed with one another.
  • one of the activity sensor elements and / or the presence sensor elements and at least one of the temperature sensor elements are integrally formed with one another.
  • Presence sensor elements have in particular at least one electrical one
  • Line element which is wound in particular to the induction coil and which is in particular designed as a thermistor or an RTD (resistance temperature detectors) and forms the temperature sensor element.
  • thermistor or an RTD (resistance temperature detectors)
  • Main extension plane of the induction unit is aligned, at least
  • Presence sensor elements and at least one of the temperature sensor elements when viewing a vertical projection of the sensor unit on a plane “at least partially overlapping”, should be understood in particular that when viewing a vertical projection of the sensor unit on a plane, the objects have an area fraction of at least 30%, in particular of at least 50%, advantageously of at least 70%, particularly hastily of at least 80%, preferably of at least 90% and particularly preferably of at least 95% of an area of a smaller one of the objects are arranged overlapping in the plane. In particular, this can do the same
  • Resolving power upon detection of the presence parameter and / or the activity parameter and the temperature parameter are provided, which in particular makes it easy to use.
  • Activity sensor elements and / or the presence sensor elements and / or the temperature sensor elements are arranged on different substrates and the substrates are arranged to overlap one another.
  • the substrates are arranged to overlap one another.
  • Presence sensor elements and / or the temperature sensor elements arranged on the same substrate whereby in particular a small variety of components and / or a low level of storage and / or low hardware costs can be made possible.
  • each of the temperature sensor elements is designed as a thermistor or an RTD.
  • the thermistor is in particular a resistance thermometer and could, for example, be designed as a thermistor and / or PTC thermistor.
  • a number of activity sensor elements and / or presence sensor elements and a number of temperature sensor elements could be different from one another, for example.
  • a number of activity sensor elements and / or presence sensor elements and a number of temperature sensor elements are preferably identical. In particular, exactly one temperature sensor element is assigned to one of the activity sensor elements and / or the presence sensor elements.
  • Induction units This allows, in particular, a high level of operating comfort and / or a simple assignment of a detected temperature parameter to a detected activity parameter and / or to a detected presence parameter.
  • Presence sensor elements and / or the temperature sensor elements when viewing a vertical projection of the sensor unit on one level each have an area extension of at most 25 cm 2 , in particular of at most 20 cm 2 , advantageously of at most 15 cm 2 , particularly advantageously of at most 12 cm 2 , preferably of has a maximum of 10 cm 2 and particularly preferably a maximum of 9 cm 2 in the plane.
  • at least one of the, in particular at least a large part of, and advantageously each of the sensor elements, in particular the activity sensor elements and / or the presence sensor elements and / or the temperature sensor elements could have a size which relates in particular to an object to be detected and / or to an object to be detected could be adapted.
  • a high resolution capability can be achieved, whereby in particular even small and / or minimal quantities to be detected can be detected.
  • the presence sensor elements in particular a shape and / or shape of even very small objects can be detected without problems.
  • sensor elements which are formed in particular by the induction units, in particular a fraction of an energy is to be transmitted to the object to be detected, as a result of which in particular an unwanted one
  • Heating of the object to be detected is kept low and / or entirely
  • Particularly advantageous properties with regard to the detection of a sensor parameter can in particular be achieved by an induction device, in particular by an induction hob, with at least one induction device according to the invention.
  • the induction device is not intended to be limited to the application and embodiment described above.
  • the induction device can have a number that differs from a number of individual elements, components and units specified here in order to fulfill a function described here.
  • Fig. 1 shows an induction device with an induction device in one
  • Fig. 3 shows a section of a sensor unit of the induction device with a
  • Activity sensor elements in a schematic top view, 4 shows one of the presence sensor elements and one of the activity sensor elements from FIG. 3 in an enlarged view
  • Fig. 5 shows a section of the sensor unit with a variety
  • Temperature sensor elements in a schematic top view, wherein an illustration of an electrical connection of the temperature sensor elements has been omitted,
  • Fig. 7 shows a section of the sensor unit with the
  • Presence sensor elements, the activity sensor elements and the temperature sensor elements in a schematic plan view, a substrate of the sensor unit being shown transparently,
  • Fig. 8 is an enlarged detail of Figure 7 in a schematic
  • Fig. 9 shows a resonant circuit of the sensor unit in a schematic
  • Fig. 10 shows a driver circuit of the sensor unit in a schematic
  • Fig. 11 is a diagram in which a normalized inductance and a normalized
  • Frequency are plotted over a standardized distance of the sensor unit to an object, in a schematic
  • Temperature sensor element of a sensor unit of an alternative induction device in a schematic plan view
  • FIG. 13 shows a presence sensor element, an activity sensor element and a
  • Temperature sensor element of a sensor unit of an alternative induction device in a schematic plan view.
  • FIG. 1 shows an induction device 30a, which is designed as an induction hob, with an induction device 10a, which is designed as an induction hob device.
  • induction device 30a and / or the induction device 10a can be designed, for example, for inductive energy transmission to an object (not shown) that is different from a cookware 38a.
  • the object could, for example, be a self-propelled working device and / or a handheld power tool and / or a blind and / or a remote control.
  • the induction device 10a has a stand plate 32a. In the present
  • the set-up plate 32a is designed as a hob plate. In an assembled state, the stand plate 32a forms part of one
  • the set-up plate 32a is provided for setting up cookware 38a (cf. FIG. 2).
  • the induction device 10a has a large number of induction units 12a for heating cookware 38a (cf. FIG. 2). In the figures, only one of multiple objects is provided with a reference symbol.
  • the induction device 10a has a large number of induction units 12a for heating cookware 38a (cf. FIG. 2). In the figures, only one of multiple objects is provided with a reference symbol.
  • Induction units 12a together define a footprint 22a.
  • a surface spanned by the induction units 12a in the plane and a surface spanned by the installation surface 22a in the plane are substantially congruent. Only one of the induction units 12a is described below.
  • the induction unit 12a is arranged in an installed position below the mounting plate 32a.
  • the induction unit 12a is provided for heating cooking utensils 38a placed on the set-up plate 32a above the induction unit 12a.
  • Induction unit 12a is designed as an induction heating unit in the present exemplary embodiment.
  • the induction device 10a has an operator interface 34a for the input and / or selection of operating parameters (cf. FIG. 1), for example a heating power and / or a heating power density and / or a heating zone.
  • operating parameters cf. FIG. 1
  • Operator interface 34a is provided for outputting a value of an operating parameter to an operator.
  • the induction device 10a has a control unit 16a.
  • the control unit 16a is provided in dependence on input by means of the operator interface 34a Execute operating parameter actions and / or change settings.
  • the control unit 16a regulates an energy supply to the in an operating state
  • Induction unit 12a Induction unit 12a.
  • the control unit 16a is provided for an evaluation and / or processing of at least one sensor parameter detected by a sensor unit 14a.
  • Induction device 10a has sensor unit 14a (see FIGS. 2 to 6). In an installed position, the sensor unit 14a is arranged below the mounting plate 32a (see FIG. 2). The sensor unit 14a is arranged in an installed position above the induction unit 12a. In an installed position, the sensor unit 14a is arranged between the induction unit 12a and the mounting plate 32a.
  • the sensor unit 14a When viewing a vertical projection of the installation surface 22a, which is defined at least by the induction unit 12a, onto one plane, the sensor unit 14a extends over an area portion of essentially 100% of an area spanned by the installation surface 22a in the plane.
  • a surface spanned by the sensor unit 14a in the plane and a surface spanned by the installation surface 22a in the plane are substantially congruent.
  • the sensor unit 14a is provided for the detection of at least one sensor parameter.
  • the sensor unit 14a is provided for the detection of at least three different sensor parameters, in particular of at least three different types and / or types of sensor parameters.
  • the sensor unit 14a has three sensor elements 18a, 24a, 26a, which are each provided for the detection of one of the different types and / or types of sensor parameters.
  • the sensor unit 14a has a substrate 36a (cf. FIGS. 2 to 8).
  • Sensor elements 18a, 24a, 26a are arranged on the substrate 36a.
  • the sensor elements 18a, 24a, 26a could be printed on the substrate 36a and / or applied to the substrate 36a by means of a coating.
  • the sensor unit 14a has a plurality of distributed ones
  • Presence sensor elements 18a (see FIGS. 3 and 4).
  • the presence sensor elements 18a are arranged in a matrix.
  • a number of presence sensor elements 18a is significantly larger than a number of induction units 12a.
  • the presence sensor elements 18a are designed to detect at least one object 20a as a presence parameter
  • the object 20a is part of the induction device 10a.
  • at least one object 20a is the cookware 38a.
  • the presence sensor elements 18a are provided for the detection of at least one sensor parameter designed as a presence parameter of the cookware 38a. Detect in the operating state
  • Presence sensor elements 18a at least one sensor characteristic configured as the presence characteristic of the object 20a and / or the cooking utensil 38a.
  • Each of the presence sensor elements 18a has at least one
  • Presence sensor elements 18a the sensor characteristic formed as the presence characteristic of the object 20a and / or the cookware 38a by changing an impedance and / or a resonance frequency of the induction coil.
  • the sensor unit 14a has a plurality of distributed ones
  • Activity sensor elements 24a (see FIGS. 3 and 4). In the present
  • the activity sensor elements 24a are arranged in a matrix.
  • a number of activity sensor elements 24a is significantly larger than a number of induction units 12a.
  • the activity sensor elements 24a are at least one for detection
  • the activity sensor elements 24a detect at least one designed as an activity parameter of the induction unit 12a
  • Each of the activity sensor elements 24a has at least one induction coil.
  • Presence sensor elements 18a are identical.
  • the activity sensor elements 24a and the presence sensor elements 18a are integrally formed with one another.
  • Presence sensor elements 18a are integrally formed with one another.
  • the sensor unit 14a has a plurality of distributed ones
  • Temperature sensor elements 26a (see FIGS. 5 and 6). In the present
  • the temperature sensor elements 26a are arranged in a matrix.
  • a number of temperature sensor elements 26a is significantly larger than a number of induction units 12a.
  • the temperature sensor elements 26a are at least one for detection
  • Temperature parameter provided at least one sensor parameter trained unit 28a.
  • the temperature sensor elements 26a detect at least one sensor parameter designed as a temperature parameter of at least one unit 28a.
  • the unit 28a is part of the induction device 10a. At least one unit 28a is the mounting plate 32a in the present embodiment.
  • the temperature sensor elements 26a are provided for the detection of at least one sensor parameter designed as the temperature parameter of the mounting plate 32a. In the operating state, the temperature sensor elements 26a detect at least one sensor parameter designed as a temperature parameter of the unit 28a and / or the mounting plate 32a.
  • Temperature sensor elements 26a is designed as a thermistor or an RTD. In the operating state, the temperature sensor elements 26 detected the as
  • Temperature parameter of the unit 28a and / or the mounting plate 32a formed sensor parameter by changing an electrical resistance of the respective temperature sensor element 26a as a function of a temperature.
  • Temperature sensor elements 26a are identical. A number of
  • Presence sensor elements 18a and a number of temperature sensor elements 26a are identical.
  • Temperature sensor elements 26a are designed differently from one another.
  • One of the activity sensor elements 24a and one of the temperature sensor elements 26a are each designed differently from one another.
  • Each of the presence sensor elements 18a and each of the temperature sensor elements 26a are configured differently from one another.
  • Each of the activity sensor elements 24a and each of the temperature sensor elements 26a are configured differently from one another.
  • one of the presence sensor elements 18a and one of the temperature sensor elements 26a are arranged at different positions of the substrate 36a of the sensor unit 14a.
  • Activity sensor elements 24a and in each case one of the temperature sensor elements 26a are arranged at different positions of the substrate 36a of the sensor unit 14a.
  • Temperature sensor elements 26a are arranged at different positions of the substrate 36a of the sensor unit 14a.
  • Each of the activity sensor elements 24a and each of the temperature sensor elements 26a are arranged at mutually different positions of the substrate 36a of the sensor unit 14a.
  • Temperature sensor elements 26a arranged in sections and advantageously completely overlapping (see FIGS. 7 and 8).
  • one of the presence sensor elements 18a and one of the temperature sensor elements 26a are arranged in sections and advantageously completely overlapping.
  • each of the presence sensor elements 18a has a surface extension of essentially 9 cm 2 in the plane when viewing a vertical projection of the sensor unit 14a on a plane. When viewed, each of the presence sensor elements 18a has a vertical one
  • Projection of the sensor unit 14a onto a plane each has an area extension of essentially 3 ⁇ 3 cm 2 in the plane.
  • each of the activity sensor elements 24a has a surface extension of essentially 9 cm 2 in the plane when viewing a vertical projection of the sensor unit 14a on a plane.
  • each of the activity sensor elements 24a in each case has an area extension of im
  • each of the temperature sensor elements 26a has a surface extension of essentially 9 cm 2 in the plane when viewing a vertical projection of the sensor unit 14a on a plane.
  • each of the temperature sensor elements 26a in each case has an area extension of im
  • the sensor unit 14a has a large number of electrical resonant circuits 50a (cf. FIG. 9).
  • an electrical resonant circuit 50a Only the resonant circuit 50a shown is described below.
  • the sensor unit 14a has a resonance capacitance 54a.
  • the resonance capacitance 54a and the presence sensor element 18a, in particular the induction coil of the presence sensor element 18a, are electrically connected in series.
  • the resonance capacitance 54a is designed as a capacitor.
  • the sensor unit 14a has an oscillator 52a, in particular per resonant circuit 50a.
  • the oscillator 52a has a Clapp oscillator.
  • One of the presence sensor elements 18a, the resonance capacitance 54a and the oscillator 52a are part of the resonant circuit 50a. If an object 20a
  • the presence sensor element 18a detects the object 20a, in particular by changing, advantageously by increasing, an inductance of the induction coil.
  • the sensor unit 14a has a large number of electrical driver circuits 56a (cf. FIG. 10). In the present exemplary embodiment, the sensor unit 14a has one electrical driver circuit 56a per presence sensor element 18a. Only the driver circuit 56a shown is described below.
  • sensor unit 14a has an electrical resistance 58a.
  • Presence sensor element 18a in particular the induction coil of the
  • Presence sensor element 18a are electrically connected in series.
  • the exemplary embodiment is the electrical resistor 58a as an electrical one
  • the sensor unit 14a has an energy source 60a, in particular per driver circuit 56a.
  • the energy source 60a is provided to provide electrical energy for the presence sensor element 18a.
  • the control unit 16a operates the presence sensor element 18a, in particular by means of the energy source 60a, at a fixed frequency.
  • the control unit 16a detects an impedance of the presence sensor element 18a in the operating state.
  • the presence sensor element 18a detects the object 20a, in particular by changing, advantageously by increasing, an inductance of the induction coil.
  • the control unit 16a detects an electrical voltage at a first measuring point 62a, which is arranged on a side of the presence sensor element 18a facing the resistor 58a. In the operating state, the control unit 16a detects an electrical voltage at a second measuring point 64a, which on a side of the resistor 58a facing away from the
  • Presence sensor element 18a is arranged.
  • the control unit 16a calculates an impedance of the presence sensor element 18a from the detected electrical voltages and from the electrical resistance 58a.
  • the control unit 16a determines in the
  • FIG. 11 shows a diagram in which a normalized inductance of one of the
  • Induction coils and a standardized frequency are each plotted over a standardized distance of the sensor unit 14a from the object 20a.
  • An inductance of one of the induction coils with respect to an inductance of the induction coil in the absence of the object 20a is plotted on a first ordinate axis 40a.
  • a second ordinate axis 42a is a frequency of one of the induction coils in relation to a frequency of the induction coil in the absence of the object 20a applied.
  • a distance between the sensor unit 14a and the object 20a is plotted on an abscissa axis 44a, based on a maximum extent of one of the sensor elements 18a, 24a, 26a.
  • the maximum extent of one of the sensor elements 18a, 24a, 26a is essentially 3 cm.
  • a curve 48a shown in solid lines shows a curve of the normalized inductance of one of the induction coils.
  • a curve 46a shown in broken lines shows a curve of the normalized frequency of one of the induction coils.
  • the inductance of the induction coil assumes a value of approximately 50% of a value which the Inductance of the induction coil assumes at a distance of the object 20a from the sensor unit 14a of essentially 30 mm.
  • FIGS. 12 and 13 show two further exemplary embodiments of the invention.
  • the following descriptions are essentially limited to the differences between the exemplary embodiments, reference being made to the description of the exemplary embodiment in FIGS. 1 to 11 with regard to components, features and functions that remain the same.
  • the letter a in the reference symbols of the exemplary embodiment in FIGS. 1 to 11 is replaced by the letters b and c in the reference symbols of the exemplary embodiment in FIGS. 12 and 13.
  • components with the same designation in particular with regard to components with the same reference numerals, reference can in principle also be made to the drawings and / or the description of the exemplary embodiment in FIGS.
  • FIG. 12 shows a section of an alternative sensor unit 14b
  • the sensor unit 14b has a plurality
  • Presence sensor elements 18b a large number of activity sensor elements 24b and a large number of temperature sensor elements 26a, each of which only one is shown.
  • One of the presence sensor elements 18b and one of the activity sensor elements 24b are each formed in one piece with one another.
  • Temperature sensor elements 26b are designed differently from one another.
  • One of the activity sensor elements 24b and one of the temperature sensor elements 26b are each designed differently from one another.
  • Each of the presence sensor elements 18b and each of the temperature sensor elements 26b are configured differently from one another.
  • Each of the activity sensor elements 24b and each of the temperature sensor elements 26b are configured differently from one another.
  • one of the presence sensor elements 18b and one of the temperature sensor elements 26b are electrically connected in series. In each case one of the activity sensor elements 24b and one of the
  • Temperature sensor elements 26b are electrically connected in series.
  • FIG. 13 shows a section of an alternative sensor unit 14c
  • the sensor unit 14c instructs a plurality
  • Presence sensor elements 18c a large number of activity sensor elements 24c and a large number of temperature sensor elements 26c, only one of which is shown in each case.
  • One of the presence sensor elements 18c and one of the activity sensor elements 24c are formed in one piece with one another.
  • One of the presence sensor elements 18c and one of the temperature sensor elements 26c are formed in one piece with one another.
  • One of the activity sensor elements 24c and one of the temperature sensor elements 26c are formed in one piece with one another.

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

Abstract

L'invention concerne un dispositif à induction (10a-c), en particulier un dispositif de plaque de cuisson à induction, comprenant au moins une unité à induction (12a-c), au moins une unité de capteur (14a-c) qui est prévue pour détecter au moins une grandeur caractéristique de capteur, et au moins une unité de commande (16 a-c) qui sert à évaluer la grandeur caractéristique de capteur. L'invention vise à fournir un dispositif de ce type présentant des propriétés améliorées en termes de détection de grandeurs caractéristiques déterminées. A cet effet, l'unité de capteur (14 a-c) est disposée dans une position de montage au-dessus de l'unité à induction (12a-c) et présente une pluralité d'éléments capteurs d'activité (24a-c) disposés de manière répartie, qui servent à détecter au moins une grandeur caractéristique de capteur conçue sous la forme d'une grandeur caractéristique d'activité de l'unité à induction (12a-c).
EP19790303.2A 2018-10-18 2019-10-16 Dispositif à induction Pending EP3868174A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ES201831011A ES2754821A1 (es) 2018-10-18 2018-10-18 Dispositivo de inducción
PCT/IB2019/058819 WO2020079609A1 (fr) 2018-10-18 2019-10-16 Dispositif à induction

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EP3868174A1 true EP3868174A1 (fr) 2021-08-25

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EP19790303.2A Pending EP3868174A1 (fr) 2018-10-18 2019-10-16 Dispositif à induction

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US (1) US20210410238A1 (fr)
EP (1) EP3868174A1 (fr)
ES (1) ES2754821A1 (fr)
WO (1) WO2020079609A1 (fr)

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Publication number Priority date Publication date Assignee Title
US10555380B2 (en) * 2017-03-28 2020-02-04 Inductive Intelligence, Llc Smart appliances, systems and methods

Family Cites Families (8)

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Publication number Priority date Publication date Assignee Title
JP3317017B2 (ja) * 1994-05-13 2002-08-19 富士電機株式会社 電磁調理器の温度検出器
JP3985539B2 (ja) * 2002-02-06 2007-10-03 松下電器産業株式会社 誘導加熱調理器
JP2005251454A (ja) * 2004-03-02 2005-09-15 Fuji Electric Fa Components & Systems Co Ltd 電磁誘導加熱装置
ES2376566B1 (es) * 2009-10-13 2013-01-29 Bsh Electrodomésticos España, S.A. Campo de cocción con sensores inductivos.
DE102014111899A1 (de) * 2014-08-20 2016-02-25 Miele & Cie. Kg Kochfeldeinrichtung und Verfahren zum Betreiben
ES2564889B1 (es) * 2014-09-24 2017-01-04 BSH Electrodomésticos España S.A. Dispositivo de aparato doméstico y procedimiento para la fabricación de un dispositivo de aparato doméstico
WO2018029002A1 (fr) * 2016-08-08 2018-02-15 Arcelik Anonim Sirketi Cuiseur chauffant à couche mince détectant des ustensiles de cuisson avec des procédés de chauffage améliorés
KR102052703B1 (ko) * 2017-06-26 2019-12-05 엘지전자 주식회사 용기 감지 센서 및 용기 감지 센서를 포함하는 유도 가열 장치

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ES2754821A1 (es) 2020-04-20
WO2020079609A1 (fr) 2020-04-23

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