EP2469973A1 - Plaque de cuisson à induction dotée d'un éclairage de table de cuisson - Google Patents

Plaque de cuisson à induction dotée d'un éclairage de table de cuisson Download PDF

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Publication number
EP2469973A1
EP2469973A1 EP11193477A EP11193477A EP2469973A1 EP 2469973 A1 EP2469973 A1 EP 2469973A1 EP 11193477 A EP11193477 A EP 11193477A EP 11193477 A EP11193477 A EP 11193477A EP 2469973 A1 EP2469973 A1 EP 2469973A1
Authority
EP
European Patent Office
Prior art keywords
cooking
temperature
light
lighting
induction hob
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.)
Withdrawn
Application number
EP11193477A
Other languages
German (de)
English (en)
Inventor
Bastian Dittmann
Christoph Ortmann
Andreas SCHÜSSLER
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 Bosch und Siemens 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 Bosch und Siemens Hausgeraete GmbH filed Critical BSH Bosch und Siemens Hausgeraete GmbH
Publication of EP2469973A1 publication Critical patent/EP2469973A1/fr
Withdrawn legal-status Critical Current

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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
    • H05B6/1209—Cooking devices induction cooking plates or the like and devices to be used in combination with them
    • H05B6/1218—Cooking devices induction cooking plates or the like and devices to be used in combination with them with arrangements using lights for heating zone state indication

Definitions

  • the invention relates to an induction hob with at least one hotplate, wherein the at least one hotplate is associated with a cooking area lighting.
  • induction hobs of the aforementioned type in which a respective cooking point or trough can be illuminated by means of a lamp when the hotplate is activated.
  • the hotplate can be activated by generating a magnetic field at the location of the hotplate through one or more primary coils.
  • the magnetic field can heat a cookware set down on the hob.
  • the lamp is energized separately.
  • the object is achieved by an induction hob with at least one cooking point or trough, wherein the at least one hotplate is associated with cooking surface lighting and wherein the induction hob has at least one temperature measuring device for detecting a temperature at the at least one cooking point and the induction hob is adapted to a light emission of a Heater lighting to vary depending on a temperature detected at this hotplate.
  • An increase in temperature at a cooking point of an induction hob can thereby come about in particular by the fact that a cooking utensil located on the cooking surface is heated by a magnetic field generated by the induction cooktop and transfers this heat in part to the cooktop carrying it.
  • a display of residual heat can be achieved in a simple way.
  • the cooking area lighting is activated at an activated hotplate.
  • an activation of the hotplate can be detected even at a non-elevated temperature.
  • the cooking area lighting can illuminate the cooking area and / or an area adjacent to the cooking area.
  • the cooking surface lighting light of different colors can be emitted.
  • the light color of the cooking surface lighting can be temperature-varied. This provides a particularly intuitive color coding.
  • a wavelength of the radiated light decreases with increasing temperature, which accommodates a natural experience of a user in judging a height of a temperature.
  • the increase can be continuous or quasi-continuous with the temperature or alternatively stepwise.
  • the light emitted from the cooking surface illumination has at least one wavelength in a color range between red and yellow, e.g. a wavelength between 570 nm and 750 nm.
  • the light emitted by the cooking surface lighting has at least one wavelength in a color range between red and yellow, if the detected temperature is above a predetermined critical temperature, and has a shorter wavelength than yellow, eg green or blue if the sensed temperature is below a predetermined critical temperature.
  • a predetermined critical temperature e.g. a predetermined critical temperature
  • yellow e.g green or blue
  • a hot cooking area is characterized by a high temperature indicating color (red to yellow).
  • a light color may only be varied between a non-alarming perceived color and a high temperature indicative color.
  • the choice of color is basically not limited and may be e.g. also a flashing or similar include, e.g. a continuous light emission at an activated hotplate and a flashing light emission with a display of residual heat.
  • a wavelength of the radiated light decreases from the inside to the outside, e.g. from red to yellow.
  • the wavelength of all rings can be increased or decreased, but the wavelength difference is preferably retained at least qualitatively.
  • a color sequence of three rings with a color sequence from the inside to the outside with decreasing temperature may change from pale yellow-dark yellow-orange to dark yellow-orange-red.
  • the cooking surface lighting can have one or more color-tunable light sources or a plurality of differently colored light sources for the color-variable illumination.
  • light sources for example light emitting diodes, fluorescent tubes, etc. can be used.
  • the cooking surface lighting light in different geometric patterns can be emitted.
  • the cooking area lighting can transmit temperature information to a user even without a color and / or brightness variation.
  • the different patterns may produce a different area coverage of illuminated areas within a same outer contour, such as full area illumination, edge illumination or partial illumination, e.g. a strip-shaped lighting.
  • the different patterns may also include differently sized illuminated areas.
  • the different patterns have an increasing with increasing temperature integral brightness or luminous flux.
  • integral Brightness is understood to be the total (integrated) luminous flux of the area perceived by the lighting device as illuminated.
  • a lower integral brightness may be achieved by a smaller number of illuminated areas, with the (local) brightness of the areas not changing.
  • a lower temperature may be indicated by light of a comparatively high wavelength (e.g., red) with a comparatively small luminous flux
  • a higher temperature may be indicated by light of a comparatively short wavelength (e.g., yellow) having a comparatively high luminous flux.
  • the cooking area lighting can be powered by wire, e.g. over usual power cables.
  • the cooking surface lighting has at least one secondary coil for its supply. So can be dispensed with a wiring.
  • the secondary coil can be operated, for example, by the inductors or primary coils used for heating the cookware, or alternatively by means of dedicated, dedicated supply coils.
  • the cooking surface lighting can have a current or voltage regulator in order to reproducibly generate a specific light characteristic, in particular a defined brightness. Without such a current or voltage regulator and if the cooking area lighting has at least one secondary coil for its supply, a brightness of the light emitted by the cooking surface lighting may depend on a power applied to the cooking area, eg from a set cooking level. This power may at least roughly correlate with the temperature at the hob.
  • the cooking area lighting has at least one energy store for your operation when the secondary coil is not fed. So even with deactivated hotplate or associated primary coil residual heat can be displayed.
  • the energy store may for example be an accumulator or a supercapacitor ('Gold Cap' or similar).
  • the use of an energy storage device for operating cooking surface lighting for induction cooking fields can also be independent of the features that the induction hob has at least one temperature measuring device for detecting a temperature at the at least one cooking point and the induction hob is adapted to a light emission of a cooking area lighting depending on one of these Cook temperature detected to vary, represent an inventive feature.
  • the associated primary coil (s) may be operated at a power sufficient to operate the cooking surface lighting, but not sufficient for the operation of a cookware.
  • the at least one hotplate occupies no fixed position, but is flexibly formed or activated with a cookware being placed on a working surface of the induction hob at the location of the cookware.
  • the induction hob can be equipped with an attachment detection device for detecting an attachment and a position of the cookware and with a flat field of several comparatively small, primary coils, wherein only those primary coils are switched, which are covered by the cookware.
  • the cooking area lighting may then also illuminate only the cooking area thus formed and / or an immediately adjacent area around it.
  • the cooktop may preferably have a translucent cover, on the underside of which the cooktop lighting is arranged.
  • the hob lighting is well protected against external influences.
  • the at least one cooktop lighting can be coupled to its operation with at least one control device of the induction cooktop, wherein the control device is also coupled to the at least one temperature measuring device.
  • the induction hob can be set up to operate a cookware by means of eddy current induction or by means of a transformer coupling.
  • Fig.1 shows a sectional side view of a section of a cooking zone 1 of an induction hob 2 with a cooking area 1 associated cooking area lighting 3.
  • the cooking station 1 is formed on a top 4o a translucent hob cover 4 above a primary coil 5.
  • the primary coil 5 can generate an alternating magnetic field at and above the cooking point 1, which heats a cooking utensil 6 placed on the cooking point 1, by means of generation of eddy current or by transformative power transmission to an electrically operated cookware 6.
  • the cooking surface lighting 3 is arranged below the hob cover 4, wherein the cooking surface lighting 3 can radiate light through the hob cover 4 and 4o generates a corresponding illumination area on its upper side.
  • the cooking area lighting 3 is controllable by a control device 8 of the induction hob 2, which also controls the primary coil 5.
  • the control device 8 is further coupled to a temperature measuring device 9, wherein the temperature measuring device 9 can sense or detect a temperature at the cooking point 1 ("cooking point temperature").
  • the control device 8 it is thus possible for the induction hob 2 to control, in particular to vary, a light emission of the cooking surface lighting 3 as a function of the hotplate temperature detected at this hotplate 1.
  • the primary coil 5 may also supply the cooking area lighting 3, the cooking area lighting 3 having, for example, a secondary coil for transforming the energy from the alternating magnetic field generated by the primary coil 5.
  • the cooking surface lighting 3 may further comprise a voltage regulator or current regulator for providing a defined operating voltage and / or a defined operating current.
  • the cooking area lighting 3 can also have an energy store for operation when the primary coil 5 is deactivated.
  • the cooking surface lighting 3 may in particular have one or more light emitting diodes as the light source (s), but is not limited thereto.
  • the cooking area lighting 3 can also have one or more light guides, for example for guiding light from the at least one light source to the underside of the cooktop cover 4.
  • Fig.2 shows in plan view a cooking area, for example, the cooking area 1, which is surrounded by a color differently illuminable annular illumination area, for example, the illumination area 7.
  • the cooking surface lighting for example, the cooking surface lighting 3, for this purpose has a corresponding annular Lichtabstrahl Scheme.
  • the cooking area lighting 3 By means of the cooking area lighting 3, light of different color can be emitted, so that the illumination area 7 visible to a user can shine in different colors.
  • the color is set here as a function of the temperature detected by the temperature measuring device 9 hotplate temperature.
  • the color can be varied by way of example in stages between green, red, orange and yellow.
  • the correspondence to a corresponding range of the hotplate temperature is such that a wavelength of the radiated light decreases with increasing hotplate temperature for the colors red, orange and yellow.
  • the illumination area 7 can glow red if the temperature of the hotplate is between a critical temperature and a higher first limit temperature, this range corresponds to a hot stove.
  • the illumination area 7 can glow orange if the cooking station temperature is between the first limit temperature and an even higher second limit temperature, this area corresponding to a hot cooking place.
  • the illumination area 7 can glow yellow if the cooking station temperature is between the second limit temperature and an even higher third limit temperature, this area corresponding to a very hot cooking place.
  • the lighting area 7 can light green if the hotplate 1 is activated to operate a cookware 6.
  • FIG. 3 shows in plan view, the cooking area 1 with a producible by another cooktop lighting area 10.
  • the cooking area lighting light of different colors emitted simultaneously, in the form of the illumination area 10 with around the associated cooking area 1 around concentric rings 11a (inner ring ), 11b (middle ring) and 11c (outer ring), wherein a wavelength of the radiated light of the rings 11a, 11b, 11c increases from inside to outside. eg from yellow to red.
  • the wavelength of all rings 11a-c can be increased or decreased, but the wavelength difference is preferably retained at least qualitatively.
  • the three rings 11a, 11b, 11c in this order ie from the inside to the outside, at a comparatively high temperature at the same time bright yellow, dark yellow or orange light and change to dark yellow-orange-red at a comparatively low hotplate temperature.
  • the inner ring 11a may be orange, for example, and the middle ring 11b may be red, while the outer ring 11c is not lit.
  • an area of the illumination area 10 can also be temperature-adjusted. For example, at a hotplate temperature below the critical hotplate temperature with the hotplate 1 activated, only the inner ring 11a may light, eg, green or blue.
  • Fig.4A to 4D show in plan view the cooking area 1 with a lighting in different patterns lighting area 12, wherein the illumination area 12 now illuminates the surface of the cooking area. While an outer contour remains constantly ring-shaped, the light pattern generated therein changes depending on the hotplate temperature.
  • 4A shows a pattern of the illumination area 12 for a very hot cooking area 1, in which the illumination area 12 is illuminated over the entire surface. If there is only a hot cooking area 1, the lighting area 12 may, for example, only be illuminated annularly at its outer edge, but within the annular area it may be illuminated over the whole area, as in FIG 4B indicated.
  • 4C shows the luminous pattern of the illumination area 12 for a hotplate 1, wherein the pattern is now linear, so that an integral brightness of the illumination area 12 is lower than in a full-surface illumination.
  • Fig.4D shows the luminous pattern of the lighting area 12 for a warm, deactivated cooking area 1 (residual heat indicator), wherein the lighting area 12 is also formed by means of a line pattern, but with a lower line density than in 4C shown hot, activated cooking 1.
  • the cooking area lighting alternatively or additionally emit light in locally different brightness, so be dimmable.
  • a light emission can be varied as a function of steps or ranges of the hotplate temperature or continuously or quasi-continuously with the hotplate temperature.
  • the induction hob may also include a field or array of primary coils that are dynamically associated with a cookware parked on the hob.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Induction Heating Cooking Devices (AREA)
EP11193477A 2010-12-22 2011-12-14 Plaque de cuisson à induction dotée d'un éclairage de table de cuisson Withdrawn EP2469973A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE201010063881 DE102010063881A1 (de) 2010-12-22 2010-12-22 Induktionskochfeld mit Kochstellenbeleuchtung

Publications (1)

Publication Number Publication Date
EP2469973A1 true EP2469973A1 (fr) 2012-06-27

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EP11193477A Withdrawn EP2469973A1 (fr) 2010-12-22 2011-12-14 Plaque de cuisson à induction dotée d'un éclairage de table de cuisson

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EP (1) EP2469973A1 (fr)
DE (1) DE102010063881A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2683218A3 (fr) * 2012-07-05 2014-10-29 Diehl AKO Stiftung & Co. KG Procédé et dispositif d'indication de gradient thermique résiduel des dessus de cuisinières
US20150351163A1 (en) * 2014-05-30 2015-12-03 Samsung Electronics Co., Ltd. Cooking apparatus
ES2615333A1 (es) * 2015-12-04 2017-06-06 BSH Electrodomésticos España S.A. Dispositivo de campo de cocción
EP3768044A1 (fr) * 2019-07-16 2021-01-20 Electrolux Appliances Aktiebolag Appareil ménager et procédé d'alimentation d'au moins un premier et un second composant ou ensemble électrique ou électronique
US11246190B2 (en) 2019-05-08 2022-02-08 Whirlpool Corporation Cooking hob with edge lighting indicating burner unit use

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005249318A (ja) * 2004-03-05 2005-09-15 Sanyo Electric Co Ltd 加熱調理器
EP1596635A1 (fr) * 2003-02-14 2005-11-16 Kabushiki Kaisha Toshiba Table de cuisson a induction
JP2006294371A (ja) * 2005-04-08 2006-10-26 Matsushita Electric Ind Co Ltd 誘導加熱装置
WO2008042805A2 (fr) * 2006-09-29 2008-04-10 Bose Corporation Affichage d'informations concernant la cuisson
EP2141415A2 (fr) * 2008-06-02 2010-01-06 E.G.O. Elektro-Gerätebau GmbH Dispositif d'affichage pour une plaque de cuisson, plaque de cuisson et procédé de fonctionnement d'un tel dispositif d'affichage

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1596635A1 (fr) * 2003-02-14 2005-11-16 Kabushiki Kaisha Toshiba Table de cuisson a induction
JP2005249318A (ja) * 2004-03-05 2005-09-15 Sanyo Electric Co Ltd 加熱調理器
JP2006294371A (ja) * 2005-04-08 2006-10-26 Matsushita Electric Ind Co Ltd 誘導加熱装置
WO2008042805A2 (fr) * 2006-09-29 2008-04-10 Bose Corporation Affichage d'informations concernant la cuisson
EP2141415A2 (fr) * 2008-06-02 2010-01-06 E.G.O. Elektro-Gerätebau GmbH Dispositif d'affichage pour une plaque de cuisson, plaque de cuisson et procédé de fonctionnement d'un tel dispositif d'affichage

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2683218A3 (fr) * 2012-07-05 2014-10-29 Diehl AKO Stiftung & Co. KG Procédé et dispositif d'indication de gradient thermique résiduel des dessus de cuisinières
US20150351163A1 (en) * 2014-05-30 2015-12-03 Samsung Electronics Co., Ltd. Cooking apparatus
US10887950B2 (en) * 2014-05-30 2021-01-05 Samsung Electronics Co., Ltd. Cooking apparatus
ES2615333A1 (es) * 2015-12-04 2017-06-06 BSH Electrodomésticos España S.A. Dispositivo de campo de cocción
US11371716B2 (en) 2015-12-04 2022-06-28 BSH Hausgeräte GmbH Hob apparatus
US11246190B2 (en) 2019-05-08 2022-02-08 Whirlpool Corporation Cooking hob with edge lighting indicating burner unit use
EP3768044A1 (fr) * 2019-07-16 2021-01-20 Electrolux Appliances Aktiebolag Appareil ménager et procédé d'alimentation d'au moins un premier et un second composant ou ensemble électrique ou électronique

Also Published As

Publication number Publication date
DE102010063881A1 (de) 2012-06-28

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