EP3325888B1 - Dispositif plaque de cuisson - Google Patents

Dispositif plaque de cuisson Download PDF

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Publication number
EP3325888B1
EP3325888B1 EP16732345.0A EP16732345A EP3325888B1 EP 3325888 B1 EP3325888 B1 EP 3325888B1 EP 16732345 A EP16732345 A EP 16732345A EP 3325888 B1 EP3325888 B1 EP 3325888B1
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EP
European Patent Office
Prior art keywords
radiation
hob
infrared
radiation conductor
conductor
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.)
Active
Application number
EP16732345.0A
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German (de)
English (en)
Other versions
EP3325888A1 (fr
Inventor
Rafael Alonso Esteban
Pilar Blasco Herranz
Jesús CEAMANOS GAYA
Sergio Llorente Gil
Marta OSTA LOMBARDO
Julio Rivera Peman
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
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BSH Hausgeraete GmbH
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Publication date
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Publication of EP3325888A1 publication Critical patent/EP3325888A1/fr
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Publication of EP3325888B1 publication Critical patent/EP3325888B1/fr
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Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/02—Induction heating
    • H05B6/10—Induction heating apparatus, other than furnaces, for specific applications
    • H05B6/12—Cooking devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C7/00—Stoves or ranges heated by electric energy
    • F24C7/08—Arrangement or mounting of control or safety devices
    • F24C7/082—Arrangement or mounting of control or safety devices on ranges, e.g. control panels, illumination
    • F24C7/083—Arrangement or mounting of control or safety devices on ranges, e.g. control panels, illumination on tops, hot plates
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C15/00—Details
    • F24C15/10—Tops, e.g. hot plates; Rings
    • F24C15/102—Tops, e.g. hot plates; Rings electrically heated
    • F24C15/105—Constructive details concerning the regulation of the temperature
    • 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

Definitions

  • the invention relates to a hob according to the preamble of patent claim 1.
  • a hob is already known in which a radiation conductor is arranged in an installed position below a hob plate.
  • This radiation conductor absorbs infrared radiation emitted by a set-up cooking utensil at a first end of the radiation conductor and transports the absorbed infrared radiation to a second end of the radiation conductor, which is remote from the first end in the longitudinal direction of the radiation conductor and on which an infrared sensor is arranged.
  • the two ends are essentially punctiform and each have a surface area of essentially 1 mm 2 .
  • the object of the invention is in particular to provide a generic hob with improved properties with regard to temperature measurement.
  • the object is achieved according to the invention by the features of patent claim 1, while advantageous configurations and developments of the invention can be found in the dependent claims.
  • the invention is based on a cooktop with a cooktop device, in particular an induction cooktop device, which comprises a cooktop plate, which is provided for setting up at least one cooking utensil, and at least one radiation conductor, which is provided for the purpose of converting infrared radiation to the infrared in at least one operating state to direct the sensor.
  • a cooktop device in particular an induction cooktop device, which comprises a cooktop plate, which is provided for setting up at least one cooking utensil, and at least one radiation conductor, which is provided for the purpose of converting infrared radiation to the infrared in at least one operating state to direct the sensor.
  • the radiation guide has at least, in particular exactly one radiation receiving area, which extends over a significant part of the hob plate.
  • a "cooktop device” should be understood to mean at least a part, in particular a subassembly, of a cooktop, in particular an induction cooktop.
  • the hob device can also include the entire hob, in particular the entire induction hob.
  • Under a “cooktop plate” is to be understood in particular a unit that is provided in at least one operating state for setting up cookware and is intended in particular to a part of an outer housing, in particular the Hob device and/or a hob having the hob device.
  • the hob plate consists in particular at least to a large extent of glass and/or glass ceramic.
  • a "radiation guide” is to be understood in particular as an element which is intended to transmit, in particular to transport, at least infrared radiation, advantageously both visible light and infrared radiation, in the longitudinal direction of the element, in particular via total reflections within the element.
  • the radiation conductor is provided to at least essentially prevent at least electromagnetic radiation from escaping in directions oriented at least essentially perpendicular to a longitudinal direction of the radiation conductor.
  • the radiation conductor consists in particular at least to a large extent of a material with high transmissivity, such as glass fiber and/or plastic.
  • the radiation conductor is in particular designed as a unit that is connected in at least one assembled state.
  • the radiation guide could be designed in one piece.
  • partial areas of the radiation conductor could be connected to one another at least in a materially joined manner, for example by a welding process and/or by an adhesive process and/or by an injection molding process and/or by a coating process.
  • the radiation conductor is arranged in particular between at least one heating element, in particular the hob device, and the hob plate.
  • the hob device comprises at least one heating element and advantageously at least two, particularly advantageously at least four, preferably at least eight and particularly preferably several heating elements.
  • the hob device comprises at least one variable cooking surface area which is defined and/or formed in particular by at least some of the heating elements.
  • the radiation conductor is arranged in particular in an installed position above the heating element.
  • the radiation conductor could be placed on the heating element in the installed position.
  • the radiation conductor could, for example, be at least essentially elastic.
  • the radiation guide could be designed to be at least essentially dimensionally stable.
  • the hob device could have at least one carrier unit, which could be provided to carry and/or hold the radiation conductor in the installed position at least to a large extent.
  • “Infrared radiation” should be understood to mean, in particular, electromagnetic radiation from a wavelength range from 780 nm to 0.3 mm.
  • the hob device includes at least the Infrared sensor which is provided in particular for detecting at least infrared radiation.
  • the infrared sensor In an installation position, the infrared sensor is arranged in particular at a distance from at least one heating element.
  • the infrared sensor is arranged in an installed position outside of an in particular variable cooking surface area.
  • An “infrared sensor” is to be understood in particular as a sensor which has at least one infrared-sensitive detector and/or which is intended to detect at least one intensity and/or wavelength of incident infrared radiation.
  • a "sensor” should be understood to mean in particular at least one element which has at least one detector for detecting at least one detection parameter and which is intended to output a value characterizing the detection parameter, in particular a sensor parameter, with the detection parameter being advantageous is a physical and/or chemical variable.
  • the detector of the infrared sensor and/or a detection area of the infrared sensor are/is arranged in at least one mounted state, in particular in the vicinity of one end of the radiation guide, with the detector and/or the detection area being at a very short distance, in particular when all points are considered of the infrared sensor, to the end of the radiation conductor.
  • An “end” of the radiation conductor is to be understood in particular as an edge of the radiation conductor which, in an unwound state, is aligned perpendicular to a longitudinal extent of the radiation conductor.
  • a “longitudinal extension” of an object is to be understood in particular as a length of a longest side of a smallest imaginary geometric cuboid that just barely encloses the object.
  • the radiation receiving area is provided for receiving infrared radiation emitted by at least one set cooking utensil, which is in particular at least substantially perpendicular to the radiation receiving area, in particular to a surface extension of the radiation receiving area.
  • the radiation receiving area is advantageously provided for receiving infrared radiation transmitted through the hob plate.
  • the infrared radiation emitted by the cooking utensil passes through the hob plate in particular in a direction perpendicular to a main extension plane of the hob plate before it is picked up by the radiation pick-up area.
  • the radiation guide is arranged, in particular, at least to a large extent below the hob plate.
  • the radiation guide is arranged, in particular at least to a large extent, between the hob plate and at least one heating element.
  • at least a partial area of the radiation conductor is in the installed position in a region close to the hob plate, in particular an underside of the hob plate, arranged.
  • a "main extension plane" of an object is to be understood in particular as a plane which is parallel to a largest side face of the smallest imaginary geometric cuboid which just completely encloses the object and in particular runs through the center point of the cuboid.
  • a straight line and/or plane is aligned “at least essentially perpendicularly” to another straight line and/or plane that is separate from the one straight line and/or plane is to be understood in particular as meaning that the straight line and/or plane with the further straight line and/or plane in a projection onto at least one projection plane in which at least one of the straight lines and/or one of the planes is arranged, encloses an angle of at most 30°, in particular at most 15°, advantageously around deviates from an angle of 90° by a maximum of 10°, particularly advantageously by a maximum of 5° and preferably by a maximum of 2°.
  • the radiation receiving area extends over a “substantial part” of the hob plate is to be understood to mean that the radiation receiving area has a surface extension parallel to the hob plate of at least 75 mm 2 and/or that the radiation receiving area has a longitudinal extent parallel to the hob plate of at least 20 mm, preferably at least 35 mm and particularly preferably at least 50 mm.
  • An extent “parallel to an object” is to be understood in particular as an extent which is aligned at least essentially parallel to a main plane of extent of the object.
  • a straight line and/or plane is "at least essentially parallel" to another straight line and/or plane that is separate from the one straight line and/or plane in a projection onto at least one projection plane that is perpendicular to at least one of the planes or which, in particular in the case of two straight lines, includes both straight lines in which at least one of the straight lines and/or one of the planes is arranged is aligned
  • the straight line and/or plane with the other straight line and/or or plane includes an angle which deviates from an angle of 0° by a maximum of 15°, in particular by a maximum of 10°, advantageously by a maximum of 5° and preferably by a maximum of 3°.
  • the radiation recording area is preferably a coherent, in particular spatial, area which is in particular free of interruptions. Partial areas of the radiation conductor are in particular connected to one another. “Provided” should be understood to mean, in particular, specially programmed, designed and/or equipped. The fact that an object is provided for a specific function is to be understood in particular to mean that the object fulfills and/or executes this specific function in at least one application and/or operating state.
  • the configuration according to the invention makes it possible in particular to achieve an optimal temperature measurement.
  • a large part of the infrared radiation emitted by a cooking utensil can be used to determine the temperature, as a result of which in particular a small error tolerance and/or precise indication of a temperature can be achieved.
  • at least one maximum temperature can be detected in every operating state, which means that there is a low risk of boiling over.
  • a high signal strength of infrared radiation can be made possible.
  • the radiation absorption area should extend parallel to the hob plate by at least 100 mm 2 , in particular at least 200 mm 2 , advantageously at least 500 mm 2 , particularly advantageously at least 1000 mm 2 , preferably at least 5000 mm 2 and particularly preferably at least 10000 mm 2 .
  • the radiation guide has in particular a cross-sectional area, which is in particular at least substantially perpendicular to a longitudinal direction of the radiation guide, of a maximum of 60 mm 2 , in particular of a maximum of 40 mm 2 , advantageously of a maximum of 20 mm 2 , particularly advantageously of a maximum of 10 mm 2 , preferably of at most 5 mm 2 and particularly preferably at most 1 mm 2 .
  • all of the infrared radiation emitted by a cooking utensil can be recorded and/or a precise determination of the temperature can be made possible.
  • the radiation absorption area has at least one longitudinal extent parallel to the hob plate which covers at least 50%, in particular at least 60%, advantageously at least 70%, particularly advantageously at least 75% and preferably at least 80% of an extent of the hob plate in a direction parallel to the longitudinal extent and/or in particular parallel to a longitudinal direction of the radiation guide.
  • the longitudinal extent of the radiation receiving area is in particular aligned at least essentially parallel to the longitudinal direction of the radiation guide.
  • a "longitudinal direction" of an object is to be understood in particular as a direction which is aligned parallel to a longest side of an imaginary smallest geometric cuboid just surrounding the object. In this way, in particular, a high level of flexibility with regard to a set-up position of a cooking utensil and/or a high level of convenience can be achieved.
  • the radiation receiving area could be provided to receive infrared radiation aligned at least essentially perpendicularly to one end of the radiation conductor and in particular at least essentially parallel to the longitudinal direction of the radiation conductor.
  • the Radiation receiving area intended to receive infrared radiation aligned at least substantially perpendicularly to a longitudinal direction of the radiation conductor.
  • the radiation receiving area is arranged on a longitudinal side of the radiation guide.
  • the radiation receiving area is advantageously aligned at least essentially parallel to the longitudinal direction of the radiation guide.
  • the longitudinal extent of the radiation receiving area is aligned at least essentially parallel to the longitudinal direction of the radiation guide.
  • the radiation absorption area could be provided, for example, to absorb infrared radiation from a single, in particular large, heating zone.
  • the radiation receiving area is preferably provided for receiving infrared radiation from at least two heating zones.
  • the heating zones could be designed as multiple heating zones, for example. Multiple heating zones could be designed, for example, as heating zones lying close together and/or as concentrically arranged heating zones and/or as heating zones that partially encompass one another. Multiple heating zones could in particular have an elongate shape and be provided for heating a roaster and/or a casserole and/or an elongate cooking utensil.
  • the radiation absorption area is advantageously provided to absorb infrared radiation from at least two separate heating zones, which are intended to heat different cooking utensils in particular in at least one operating state in which the heating zones are active at least essentially at the same time.
  • the separate heating zones are arranged spaced apart from one another in a direction aligned at least essentially parallel to the hob plate and advantageously have a distance of at least 5 cm, in particular at least 8 cm, advantageously at least 10 cm, in the direction aligned at least essentially parallel to the hob plate cm, particularly advantageously at least 15 cm and preferably at least 20 cm.
  • at least one further radiation conductor can be dispensed with and/or a cost-effective design can be made possible.
  • the infrared sensor is provided to receive the infrared radiation of the heating zones from the radiation guide at least essentially simultaneously.
  • the radiation guide is intended in particular to conduct infrared radiation that has entered the radiation guide to the infrared sensor along at least essentially the same path, the path being defined in particular by a lateral boundary of the radiation guide and advantageously at least to a large extent, in particular completely, runs within the radiation conductor.
  • the radiation conductor is provided to conduct infrared radiation from different heating zones at least essentially simultaneously and in particular on at least essentially the same path, in particular while avoiding a splitting of the infrared radiation from the different heating zones into a plurality of beams.
  • the infrared sensor is arranged, in particular, at least to a large extent below the hob plate.
  • the phrase that the infrared sensor is intended to receive the infrared radiation of the heating zones from the radiation guide "at least essentially simultaneously” is to be understood in particular as meaning that the infrared sensor is intended to receive infrared radiation of a first of the heating zones and infrared radiation of a second of the heating zones at a time interval of at most 1 s, in particular at most 0.5 s, advantageously at most 0.1 s, particularly advantageously at most 0.01 s and preferably at most 0.001 s receive.
  • a timely detection of infrared radiation from both heating zones can be achieved.
  • the hob device includes a control unit which is provided to determine a temperature of that heating zone with the higher, in particular with the highest, temperature as a function of the infrared radiation received by the infrared sensor.
  • the infrared sensor transmits at least one sensor parameter to the control unit.
  • the sensor characteristic depends in particular on the infrared radiation received by the infrared sensor.
  • the control unit receives the sensor parameter transmitted by the infrared sensor and, based in particular on the received sensor parameter, determines a temperature of that heating zone with the higher, in particular with the highest, temperature.
  • control unit is to be understood in particular as an electronic unit which is preferably at least partially integrated in a control and/or regulating unit of a hob and which is preferably provided to control and/or regulate at least one electronic power unit.
  • the control unit comprises an arithmetic unit and, in particular, in addition to the arithmetic unit, a memory unit with a control and/or regulation program stored therein, which is intended to be executed by the arithmetic unit. In this way, in particular, a low risk of boiling over can be achieved.
  • the radiation conductor has at least one deflection element, which is aligned obliquely relative to a longitudinal direction of the radiation conductor and is intended to direct recorded infrared radiation at least partially in the longitudinal direction.
  • the deflection element and the longitudinal direction of the radiation conductor enclose a smallest angle of at least 1°, in particular of at least 3°, advantageously of at least 5°, particularly advantageously of at least 7 ° and preferably at least 10°.
  • the deflection element and the longitudinal direction of the radiation conductor enclose a smallest angle of a maximum of 45°, in particular of a maximum of 30°, advantageously of a maximum of 25°, when the radiation conductor is viewed in at least one sectional plane, which is in particular aligned at least essentially parallel to the longitudinal direction of the radiation conductor , particularly advantageously of a maximum of 20° and preferably of a maximum of 15°.
  • the absorbed infrared radiation has entered the radiation guide in particular and is advantageously located inside the radiation guide. In particular, the absorbed infrared radiation entered the radiation guide in a direction aligned at least substantially perpendicular to the longitudinal direction of the radiation guide.
  • the deflection element could be produced by means of extrusion and/or by means of a laser.
  • the phrase that the deflection element is intended to direct the absorbed infrared radiation "at least partially" in the longitudinal direction should be understood in particular to mean that the deflection element is intended to divert the absorbed infrared radiation from a direction at least essentially perpendicular to the Direct longitudinally aligned direction of incidence in a direction which encloses a smallest angle of at most 80°, in particular at most 70°, advantageously at most 65°, particularly advantageously at most 60° and preferably at most 55° with the longitudinal direction. In this way, in particular, rapid transmission of the recorded infrared radiation can be made possible.
  • the deflection element is arranged in at least one assembled state on a side of the radiation conductor which is remote from the hob plate. In this way, in particular, a targeted deflection and/or forwarding of the infrared radiation that has entered the radiation guide can be achieved.
  • the deflection element could be an independent element, for example, which could be arranged and/or placed and/or fastened in particular on the surface of the radiation conductor that faces away from the hob panel in at least one assembled state.
  • the deflection element is preferably designed as a surface element of the radiation conductor.
  • the deflection element is in particular formed in one piece with the radiation conductor, in particular with a surface of the radiation conductor.
  • the radiation conductor has at least one reflection element which, in at least one mounted state, is arranged on a side of the radiation conductor facing away from the hob plate and has a reflectivity of at least 0.8, in particular at least 0.85, advantageously at least 0.9 , particularly advantageously at least 0.95 and preferably at least 0.98.
  • the reflection element could be designed as a surface element of the radiation guide and in particular be arranged at least to a large extent within the radiation guide.
  • the reflection element could be produced by a surface treatment of a surface of the radiation guide.
  • the reflection element is advantageously designed as a coating and/or a lacquer and/or as a texturing and/or as an object that is materially bonded to the radiation conductor, in particular to a surface of the radiation conductor.
  • the reflection element is intended in particular to reflect incident infrared radiation to a proportion of at least 80%, in particular at least 85%, advantageously at least 90%, particularly advantageously at least 95% and preferably at least 98%.
  • the reflection element could consist at least for the most part of gold and/or aluminum.
  • a "reflectivity" of an object is to be understood in particular as a property of the object to reflect electromagnetic radiation as a function of a temperature of the object and in particular in addition to a dependence on the temperature as a function of wavelength and advantageously independently of a direction, in particular a direction of incidence, where the object is designed in particular as a Lambert radiator.
  • the reflectivity is also referred to in particular as a reflectance and advantageously as a hemispherical spectral reflectance. In this way, in particular, an escape of absorbed infrared radiation can be avoided and/or all of the absorbed infrared radiation can be used to determine the temperature.
  • the hob device comprises at least one further radiation conductor with a longitudinal direction which is aligned at least essentially perpendicular to a longitudinal direction of the radiation conductor.
  • the radiation guide and the further radiation guide are in particular of at least essentially identical design.
  • the radiation guide and the further radiation guide differ in an orientation of a longitudinal direction and, for example, additionally in a value of a longitudinal extension. This can especially in a large Area of the hob plate a temperature determination of placed cookware can be made possible.
  • the temperature of the cooking utensils with the lower temperature can be determined.
  • the hob should not be limited to the application and embodiment described above.
  • the hob can have a number of individual elements, components and units that differs from the number specified herein.
  • the hob device 10a includes a hob plate 12a.
  • the hob plate 12a forms part of an outer housing, in particular an outer housing of the hob 40a.
  • the hob plate 12a is provided for setting up cookware 14a (cf. 2 ).
  • the hob device 10a comprises a plurality of heating elements 42a (cf. 2 ).
  • the heating elements 42a are each intended to heat cookware 14a placed on the hob plate 12a above the heating elements 42a.
  • the heating elements 42a are designed as induction heating elements.
  • a part of the heating elements 42a forms a first variable cooking surface area 44a.
  • a part of the heating elements 42a forms a second variable cooking surface area 46a.
  • the variable cooking surface areas 44a, 46a are arranged next to one another.
  • a variable cooking surface area 44a, 46a is arranged on one side of the hob plate 12a. In the installed state, the variable cooking surface areas 44a, 46a extend from an area of the cooking area plate 12a facing towards an operator to an area facing away from an operator.
  • the heating elements could in particular form a single, contiguous, variable cooking surface area.
  • the heating elements could, for example, be arranged at a distance from one another, in particular in the form of a classic hob, and in particular each form an independent heating zone.
  • the hob device 10a includes a control unit 48a.
  • the operating unit 48a is provided for inputting and/or selecting operating parameters, for example a heating power and/or a heating power density and/or a heating zone.
  • the operating unit 48a is provided for outputting a value of an operating parameter to an operator.
  • the hob device 10a includes a control unit 30a.
  • the control unit 30a is provided for carrying out actions and/or changing settings depending on operating parameters entered by means of the operating unit 48a. In one operating state, the control unit 30a regulates an energy supply to the heating elements 42a.
  • the hob device 10a includes power electronics 50a (cf. 2 ). To regulate the energy supply to the heating elements 42a, the control unit 30a controls the power electronics 50a. Depending on activation by the control unit 30a, the power electronics 50a supplies the heating elements 42a with energy. The power electronics 50a provide a high-frequency alternating current to supply the heating elements 42a. In the operating state, the control unit 30a controls the power electronics 50a to supply that one of the heating elements 42a above which a cooking utensil 14a is placed.
  • the hob device 10a comprises two radiation conductors 16a (cf. Figures 1 to 4 ). Of the objects that are present several times, only one is provided with a reference number in each of the figures. In each case one radiation guide 16a is assigned to one of the variable cooking surface areas 44a, 46a. Only one of the radiation guides 16a and one of the variable cooking surface areas 44a, 46a is described below.
  • the radiation guide 16a conducts infrared radiation to an infrared sensor 18a.
  • the hob device 10a includes the infrared sensor 18a.
  • the infrared sensor 18a is arranged at one end of the radiation conductor 16a.
  • the infrared sensor 18a is arranged outside of the variable cooking surface area 44a, 46a.
  • the radiation conductor 16a has a radiation receiving area 20a (cf. Figures 2 to 4 ).
  • the radiation receiving area 20a is provided for receiving infrared radiation emitted by the cooking utensil 14a. In the mounted state, the radiation receiving area 20a faces the hob plate 12a.
  • the radiation receiving area 20a extends over a substantial part of the hob plate 12a.
  • the radiation receiving area 20a extends over essentially the entire variable cooking surface area 44a, 46a.
  • the radiation receiving area 20a has a longitudinal extent 22a parallel to the hob plate 12a, which is essentially 75% of an extent of the hob plate 12a in a direction parallel to the longitudinal extent 22a.
  • the radiation receiving area 20a has a surface extension parallel to the hob plate 12a of essentially 15000 mm 2 .
  • the radiation receiving area 20a is arranged on a surface of the radiation conductor 16a extending in a longitudinal direction 24a of the radiation conductor 16a.
  • the radiation absorption area 20a absorbs infrared radiation aligned essentially perpendicular to the longitudinal extension 22a of the radiation guide 16a (cf. Figures 2 to 4 ).
  • the radiation receiving area 20a absorbs infrared radiation, which emanates from all of the cooking utensils 14a placed above the radiation guide 16a.
  • the radiation absorption area 20a absorbs infrared radiation from a plurality of heating zones 26a, 28a. For example, two heating zones 26a, 28a are assumed below without loss of generality.
  • the radiation conductor 16a conducts the infrared radiation received by the radiation receiving area 20a to the infrared sensor 18a.
  • the infrared sensor 18a receives from the Radiation guide 16a essentially simultaneously the infrared radiation of the heating zones 26a, 28a. In the operating state, the infrared sensor 18a detects the infrared radiation received from the radiation conductor 16a.
  • the infrared sensor 18a transmits a sensor parameter to the control unit 30a. The sensor parameter depends on the infrared radiation received by the infrared sensor 18a.
  • the control unit 30a determines a temperature of that heating zone 26a, 28a with the higher temperature. Depending on the determined temperature, the control unit could, for example, control the power electronics, in particular to regulate the energy supply of those heating elements that are assigned to the heating zone with the determined temperature. In the operating state, the control unit could control and/or regulate a temperature-controlled cooking process, in particular as a function of the determined temperature.
  • the radiation conductor 16a has a deflection element 32a (cf. Figures 3 and 4 ).
  • the deflection element 32a is aligned obliquely relative to the longitudinal direction 24a of the radiation guide 16a.
  • the deflection element 32a and the longitudinal direction 24a of the radiation conductor 16a enclose a smallest angle of essentially 8°.
  • the deflection element 32a partially deflects infrared radiation received by the radiation receiving area 20a in the longitudinal direction 24a of the radiation guide 16a.
  • the deflection element 32a deflects infrared radiation received by the radiation receiving area 20a from a direction oriented essentially perpendicularly to the longitudinal direction 24a of the radiation guide 16a into a direction that allows total reflection of the received infrared radiation within the radiation guide 16a.
  • the deflection element 32a is designed as a surface element of the radiation conductor 16a. In the installed state, the deflection element 32a is arranged on a side of the radiation conductor 16a that faces away from the hob plate 12a. In the assembled state, the deflection element 32a is formed as a lower surface of the radiation conductor 16a.
  • the radiation guide 16a has a reflection element 34a (cf. Figures 3 and 4 ).
  • the reflection element 34a is arranged on a side of the radiation conductor 16a that faces away from the hob plate 12a.
  • the reflection element could be designed as a micro-texturing of a surface of the radiation conductor, which in the mounted state in particular on one of the Hob plate could be arranged opposite side of the radiation conductor.
  • the reflection element 34a is in the form of a coating on the radiation conductor 16a.
  • the reflection element 34a has a reflectivity of essentially 0.95. In the operating state, the reflection element 34a essentially prevents the infrared radiation that has been absorbed from escaping.
  • FIG 5 another embodiment of the invention is shown.
  • the following descriptions are essentially limited to the differences between the exemplary embodiments, with regard to components, features and functions that remain the same on the description of the exemplary embodiment of FIG Figures 1 to 4 can be referred.
  • the letter a is in the reference numerals of the exemplary embodiment in FIGS Figures 1 to 4 by the letter b in the reference numerals of the embodiment of FIG figure 5 replaced.
  • FIG 5 shows a hob 40b with a hob device 10b.
  • the hob device 10b includes a hob plate 12b.
  • two radiation conductors 16b and two infrared sensors 18b assigned to the radiation conductors 16b are arranged below the hob plate 12b.
  • the hob device 10b includes two further radiation conductors 36b.
  • the hob device 10b includes two further infrared sensors 52b.
  • a further infrared sensor 52b is assigned to one of the further radiation conductors 36b. Only one of the radiation conductors 16b, one of the infrared sensors 18b, one of the further radiation conductors 36b and one of the further infrared sensors 52b is described below.
  • the infrared sensor 18b and the further infrared sensor 52b are of essentially identical design.
  • the radiation conductor 16b and the further radiation conductor 36b are of essentially identical design.
  • the further radiation conductor 36b has a longitudinal direction 38b.
  • the longitudinal direction 38b of the further radiation conductor 36b is aligned essentially perpendicular to a longitudinal direction 24b of the radiation conductor 16b.
  • the further radiation guide 36b has a further radiation receiving area.
  • the further radiation absorption area has a longitudinal extent parallel to the hob plate 12b, which is essentially 92% of an extent of the hob plate 12b in a direction parallel to the longitudinal extent of the further Radiation absorption range is.
  • the further radiation absorption area essentially extends over two adjacently arranged variable cooking surface areas 44b, 46b.
  • a control unit 30b determines a temperature of that heating zone 26b, 28b with the higher temperature as a function of the infrared radiation received by the infrared sensor 18b and/or the further infrared sensor 52b. For example, a case is assumed with two heating zones 26b, 28b arranged above the radiation conductor 16b. One of the heating zones 26b, 28b is arranged above the further radiation conductor 36b. In the operating state, the control unit 30b determines a temperature of the heating zone 26b, 28b, which is arranged in the operating state above the radiation conductor 16b and the further radiation conductor 36b and has a temperature with a lower value, by means of the infrared received from the further infrared sensor 52b -Radiation.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Electric Stoves And Ranges (AREA)
  • Induction Heating Cooking Devices (AREA)

Claims (12)

  1. Table de cuisson comprenant au moins un dispositif de table de cuisson, lequel comprend une plaque de table de cuisson (12a-b), laquelle sert à poser au moins un ustensile de cuisson (14a-b), un détecteur infrarouge (18a-b) et au moins un guide de rayonnement (16a-b), lequel sert à guider, dans au moins un état de fonctionnement, le rayonnement infrarouge au détecteur infrarouge (18a-b), et dans lequel le guide de rayonnement (16a-b) comprend au moins une zone d'absorption du rayonnement (20a-b) pour une absorption du rayonnement infrarouge émis par au moins un ustensile de cuisson posé, caractérisée en ce que le domaine d'absorption de rayonnement (20a-b) se trouve sur le côté longitudinal du guide de rayonnement (16a-b), lequel s'étend au-dessus d'une grande partie de la plaque de table de cuisson (12a-b) et qui comprend une extension plane parallèlement à la plaque de table de cuisson (12a-b) d'au moins 75 mm2 et/ou une extension longitudinale parallèlement à la plaque de table de cuisson (12a-b) d'au moins 20 mm.
  2. Table de cuisson selon la revendication 1, caractérisée en ce que le domaine d'absorption de rayonnement (20a-b) comprend une extension plane parallèlement à la plaque de table de cuisson (12a-b) d'au moins 100 mm2.
  3. Table de cuisson selon l'une des revendications précédentes, caractérisée en ce que la zone d'absorption de rayonnement (20a-b) comprend au moins une extension longitudinale (22a-b) parallèlement à la plaque de table de cuisson (12a-b), laquelle s'élève à au moins 50% d'une extension de la plaque de table de cuisson (12a-b) dans une direction parallèle à l'extension longitudinale (22a-b).
  4. Table de cuisson selon l'une des revendications précédentes, caractérisée en ce que le domaine d'absorption de rayonnement (20a-b) sert à absorber au moins essentiellement à la perpendiculaire d'un sens longitudinal (24a-b) du guide de rayonnement (16a-b), le rayonnement infrarouge orienté.
  5. Table de cuisson selon l'une des revendications précédentes, caractérisée en ce que le domaine d'absorption de rayonnement (20a-b) sert à absorber le rayonnement infrarouge d'au moins deux zones de chauffage (26a-b, 28a-b).
  6. Table de cuisson selon la revendication 5, caractérisée en ce que le détecteur infrarouge (18a-b) est prévu pour recevoir du guide de rayonnement (16a-b) au moins essentiellement en même temps, le rayonnement infrarouge des zones de chauffage (26a-b, 28a-b).
  7. Table de cuisson selon la revendication 6, caractérisée en ce que le dispositif de table de cuisson comprend une unité de commande (30a-b) prévue pour, en fonction du rayonnement infrarouge reçu par le détecteur infrarouge (18a-b), déterminer la température de la zone de chauffage (26a-b, 28a-b) présentant la température la plus haute.
  8. Table de cuisson selon l'une des revendications précédentes, caractérisée en ce que le guide de rayonnement (16a-b) comprend au moins un élément de déviation (32a-b), lequel est orienté en oblique par rapport à un sens longitudinal (24a-b) du guide de rayonnement (16a) et est prévu pour diriger le rayonnement infrarouge absorbé au moins en partie dans la direction longitudinale (24a-b).
  9. Table de cuisson selon la revendication 8, caractérisée en ce que l'élément de déviation (32a-b) se trouve, dans au moins un état assemblé, sur un côté du guide de rayonnement (16a-b) tournant le dos à la plaque de table de cuisson (12a-b).
  10. Table de cuisson selon la revendication 8 ou 9, caractérisée en ce que l'élément de déviation (32a-b) est réalisé en tant qu'élément de surface du guide de rayonnement (16a-b).
  11. Table de cuisson selon l'une des revendications précédentes, caractérisée en ce que le guide de rayonnement (16a-b) comprend au moins un élément de réflexion (34a-b), lequel se trouve, dans au moins un état assemblé, sur un côté du guide de rayonnement (16a-b) tournant le dos à la plaque de table de cuisson (12a-b) et présente une réflexivité d'au moins 0,8.
  12. Table de cuisson selon l'une des revendications précédentes, caractérisée en ce que le dispositif de table de cuisson comprend au moins un autre guide de rayonnement (36b) avec une direction longitudinale (38b), lequel est orienté au moins essentiellement à la perpendiculaire d'un sens longitudinal (24b) du guide de rayonnement (16b).
EP16732345.0A 2015-07-20 2016-06-21 Dispositif plaque de cuisson Active EP3325888B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ES201531066A ES2597752B1 (es) 2015-07-20 2015-07-20 Dispositivo de campo de cocción
PCT/IB2016/053674 WO2017013505A1 (fr) 2015-07-20 2016-06-21 Dispositif plaque de cuisson

Publications (2)

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EP3325888A1 EP3325888A1 (fr) 2018-05-30
EP3325888B1 true EP3325888B1 (fr) 2023-08-09

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EP (1) EP3325888B1 (fr)
ES (1) ES2597752B1 (fr)
WO (1) WO2017013505A1 (fr)

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2072334A (en) * 1980-03-24 1981-09-30 Thorn Domestic Appliances Ltd Temperature responsive apparatus
DE3117205A1 (de) * 1981-04-30 1982-12-02 Ernst Dipl.-Kfm. Dr. 7100 Heilbronn Haag Optoelektronische kochfeldsteuerung
DE19856140A1 (de) * 1998-12-04 2000-06-08 Bsh Bosch Siemens Hausgeraete Sensorgesteuertes Kochfeld mit unterhalb der Kochfeldplatte angeordneter Sensoreinheit
US6140617A (en) * 1999-10-22 2000-10-31 General Electric Company Cooktop control and monitoring system including detecting properties of a utensil through a solid-surface cooktop
US6375350B1 (en) * 2000-08-08 2002-04-23 Quantum Logic Corp Range pyrometer
DE10064621A1 (de) * 2000-12-21 2002-06-27 Ego Elektro Geraetebau Gmbh Verfahren und Vorrichtung zur Erfassung der Tenperatur eines Kochgefäßes
JP4552735B2 (ja) * 2005-04-06 2010-09-29 パナソニック株式会社 加熱調理器
WO2007097295A1 (fr) * 2006-02-21 2007-08-30 Matsushita Electric Industrial Co., Ltd. Cuisiniere a chauffage par induction
ATE479316T1 (de) * 2007-06-05 2010-09-15 Miele & Cie Verfahren zur kochfeldsteuerung und kochfeld zur durchführung des verfahrens
DE112012003678A5 (de) 2011-09-05 2014-07-10 BSH Bosch und Siemens Hausgeräte GmbH Hausgerätvorrichtung mit Infrarotsensor
ES2423383B1 (es) * 2012-02-10 2014-09-12 Bsh Electrodomésticos España, S.A. Aparato de cocción por inducción con sensor de infrarrojos

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Publication number Publication date
EP3325888A1 (fr) 2018-05-30
WO2017013505A1 (fr) 2017-01-26
ES2597752A1 (es) 2017-01-20
ES2597752B1 (es) 2017-10-25

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