EP3321592A1 - Cooking apparatus with light elements - Google Patents
Cooking apparatus with light elements Download PDFInfo
- Publication number
- EP3321592A1 EP3321592A1 EP17203551.1A EP17203551A EP3321592A1 EP 3321592 A1 EP3321592 A1 EP 3321592A1 EP 17203551 A EP17203551 A EP 17203551A EP 3321592 A1 EP3321592 A1 EP 3321592A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- cooking
- cooking surface
- cooking appliance
- light
- appliance according
- 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- Withdrawn
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Classifications
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- 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
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- 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
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- 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
-
- 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
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- 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
-
- 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
- F24C15/108—Mounting of hot plate on worktop
-
- 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
- F24C7/06—Arrangement or mounting of electric heating elements
- F24C7/062—Arrangement or mounting of electric heating elements on stoves
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- 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
- F24C7/06—Arrangement or mounting of electric heating elements
- F24C7/067—Arrangement or mounting of electric heating elements on ranges
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/68—Heating arrangements specially adapted for cooking plates or analogous hot-plates
- H05B3/74—Non-metallic plates, e.g. vitroceramic, ceramic or glassceramic hobs, also including power or control circuits
-
- 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
- H05B3/00—Ohmic-resistance heating
- H05B3/68—Heating arrangements specially adapted for cooking plates or analogous hot-plates
- H05B3/74—Non-metallic plates, e.g. vitroceramic, ceramic or glassceramic hobs, also including power or control circuits
- H05B3/742—Plates having both lamps and resistive heating elements
-
- 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
- H05B3/00—Ohmic-resistance heating
- H05B3/68—Heating arrangements specially adapted for cooking plates or analogous hot-plates
- H05B3/74—Non-metallic plates, e.g. vitroceramic, ceramic or glassceramic hobs, also including power or control circuits
- H05B3/746—Protection, e.g. overheat cutoff, hot plate indicator
-
- 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
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B2206/00—Aspects relating to heating by electric, magnetic, or electromagnetic fields covered by group H05B6/00
- H05B2206/02—Induction heating
- H05B2206/022—Special supports for the induction coils
Definitions
- the invention relates to a cooking appliance with a colored cooking surface, consisting of a glass or glass ceramic material, wherein at least one heating element and at least one luminous element are arranged in the region below the underside of the cooking surface.
- Cooking appliances with lighting elements are known from the prior art, in which the lighting elements are used to display operating conditions.
- Induction cooking appliances are usually formed today with a glass ceramic disk as a cooking surface.
- other materials such as, for example, tempered soda-lime glass or borosilicate glass, can also be used as cooking surface material if thermal overheating of these temperature-sensitive materials can be avoided.
- Cooking surfaces known from the prior art are therefore generally provided with a nap-like or similar structuring in the region of their underside.
- a glass or glass ceramic cooking surface can not balance the energy of a falling pot by deformation of the surface, such as a metal surface it could. Rather, the energy has to be transmitted to the environment through vibrations. If she is prevented, then leads the Impact load to break the cooking surface. For this reason, cooking surfaces are installed in such a way that they can avoid shock loads, for example when a pot falls down on the cooking surface.
- the heating elements, in particular induction coils are resiliently pressed against the underside of the cooking surface, so that they can also give in at the impact load.
- Lighting elements are used for cooking zone marking or for visualization of operating conditions, such as cooking situations or dangerous situations. To ensure good visibility, the lighting elements should be as close as possible to the bottom of the cooking surface. Then losses due to scattering are kept low and it is possible to achieve a good image sharpness and brightness of the light-emitting elements.
- the lighting elements themselves may u.a. be glass or glass ceramic and thereby have the property that the light emission along the length of the light element can be defined if necessary.
- a cooking appliance in which a heating element is arranged below the cooking surface.
- the heating element is supported by a housing.
- a neck housing is screwed laterally.
- the attachment housing carries a light source which couples its light into a light element designed as a light guide.
- the light guide is annular and surrounds the heating element.
- Another cooking appliance is out of the DE 40 02 322 A1 known.
- the DE 38 31 233 A1 is used here as a light source an annular light guide. This is embedded in the insulating material of the heating element.
- Another annular light guide is from the DE 43 35 893 A1 known.
- An inventive cooking appliance contains a colored cooking surface, consisting of a glass or glass ceramic material, wherein the cooking surface has an average transmission of> 0.1% for at least one of the spectral ranges 420 to 500 nm, 500 to 550 nm and 550 to 640 nm and a maximum Transmission of ⁇ 50% at 400-700 nm and additionally has a transmission of ⁇ 8% in the spectral range of 450-600 nm, wherein in the area below the underside of the cooking surface at least one heating element and at least one luminous element are arranged, characterized in that the Cooking surface is provided in the region of its top and / or bottom with a coating which is provided in the region of the light or elements with recesses, so that it forms a mask, wherein on the underside of the cooking surface in the region of the recesses, a light-diffusing element is attached.
- An inventive cooking appliance comprises a colored cooking surface with an average transmission of> 0.1%, preferably> 0.4%, in each case for at least one, preferably for each of the spectral ranges from 420 to 500 nm, 500 to 550 nm and 550 to 640 nm is.
- sufficiently bright color impressions in the blue to red spectral range can be produced with the luminous elements through the cooking surface on the display side formed by the cooking surface front side.
- With an average transmission> 0.4% clearly recognizable and sufficiently bright displays can be realized.
- the maximum transmission of the cooking surface is defined as ⁇ 50%, preferably ⁇ 25% at 400 nm - 700 nm, in addition to the transmission in the spectral range of 450-600 nm ⁇ 8%, preferably ⁇ 4% is. At a maximum transmission ⁇ 25%, the view is also denied from the outside even in the case of light irradiation.
- An inventive cooking appliance is such that the cooking surface is provided in the region of its top and / or bottom with a coating.
- the coating may have functional properties, wherein it prevents, for example, in a transparent or semi-transparent cooking surface, a view of the arranged under the cooking surface internals. Additionally or alternatively, the coating can also be used for optical decoration.
- the coating is provided with recesses in the area of the lighting elements, so that it forms a mask.
- a light-scattering element for example in the form of a roughening, preferably a coating, in particular an organic or ceramic coating, a scattering element, for example a scattering film, a scattering glass or ceramic plate or a diffusing plastic film, attached.
- the aforementioned coatings can be formed using: sol-gel materials, silicones, silicone resins, epoxy resins, methacrylates, polyurethane.
- ceramic components (color) pigments or scattering particles can be used.
- the light-diffusing element may be or may be an intermediate support. Examples of indirect carriers are glasses, glass ceramics or films, which in turn may be provided with organic and / or ceramic coatings.
- the indirect carriers of the light-scattering layer may be either self-adhesive, materially bonded (for example with an adhesive layer) or loosely connected by pressure forces to the underside.
- This causes light-diffusing element widening the viewing angle and reducing the Paralaxverschiebung, whereby the detection of this luminous appearance for the user significantly improved, and thus the reliability is increased.
- the following materials can be used as scattering materials: Lexan 8B28 (SABIC Innovative Plastics), Macrofol BL / LT (Bayer), Plexiglas SATINICE® (Röhm), OPALIKA® Glass (SCHOTT).
- Cooking surfaces are known from the prior art, which are provided for reasons of strength in the region of its underside with a knob-like or similar structuring.
- a filling layer of transparent material to be applied to the underside of the cooking surface at least in partial regions of the emitting surface of the lighting elements.
- the filling layer can consist of a transparent or translucent plastic, for example also of silicone.
- cooking surfaces are used, which are smooth on its underside, so not structured, in particular not knotted.
- an optical compensation filter may be arranged between the upper side of the cooking surface and the luminous element.
- Such an optical compensation filter shifts the location of the light emitted by the luminous element Leuchterscheinung. Due to the use of a colored glass ceramic, the light location is then shifted once more as it passes through the cooking surface.
- the optical compensation filter can now be matched to the material of the cooking surface, that ultimately the desired color appearance on the display side of the cooking surface can be generated. In this way, in particular cost-effective lighting elements using, for example, LEDs can be used.
- optical Compensation filters can be used to filter films or it may be suitable filter materials directly coated on the underside of the cooking surface or be placed directly in front of the light emitting element / LED or be integrated in the light guide or attached to the light guide.
- the compensation filter can also be designed such that it generates a scattering effect and thus widening of the viewing angle.
- the luminous element may consist of a light guide, a light guide holder and a light source.
- the optical waveguide can be formed from soda-lime glass, borosilicate glass, quartz, glass-ceramic or other transparent, in particular highly transparent types of glass. Such materials are preferred when lighting / display in the hot area of the cooking surface is to be achieved.
- transparent or colored plastics such as Plexiglas, salts or fluids as a light guide conceivable.
- the light feed into the light guide can usually be done by means of LEDs, which are available as commercially available LEDs in the colors white, blue, red and other colors. Furthermore, RGB LEDs can be used to generate any mixed colors.
- RGB LEDs instead of RGB LEDs, it may also be provided to use two differently colored LEDs, these LEDs radiating together into the light guide in order to selectively generate a predetermined mixed color. It is also conceivable that differently colored LEDs emit their light from two different locations in the light guide in order to illuminate this in different colors. It is also conceivable to use adapted LEDs, which compensate for a color shift through the colored cooking surface to the effect that the desired color is visible on the top of the cooking surface. This may be the original color of the LED but also a different color from the original light source. It is also conceivable to set a color filter directly in front of the light source or to design the light element accordingly as a filter. In this case, in particular, the task can be fulfilled, according to which the color shift by the colored cooking surface varies, in particular can be compensated, whereby in particular the original color of the LED is generated again or another hue is generated selectively.
- the luminous element can be arranged at a distance from the underside of the cooking surface, wherein preferably a distance in the range of 0.2 to 10 mm, particularly preferably 0.5 to 5 mm, particularly preferably 0.5 to 2 mm is provided.
- the distance range between 0.5 mm to 5 mm guaranteed with simultaneous damage, especially in large-sized colored glass or glass ceramic materials for the cooking surface a sufficiently high light output for visualization of a display on the cooking surface front.
- a distance range of up to 10 mm can be provided if high deflections / displacements of the cooking surface are expected, for example, in the case of large formats which are at the same time mounted in a swingable manner.
- a cooking appliance according to the invention is such that the lighting element (s) has a light source and a light guide with at least one light guide section into which the light source couples its light, and the light guide section or another light guide section coupled to the light guide section has a radiation area over which the light source Light of the bulb can be emitted toward the bottom of the cooking surface, then specific lighting situations can be generated specifically.
- the temperature-sensitive lighting means may in particular also be arranged away from the heating elements. With the Lichtleitabitesen can be punctual or surface-shaped luminous phenomena.
- At least one of the light guide sections is formed as a surface element.
- the emitting region of the lighting elements may be formed by a convex surface or a flat surface of the light guiding section.
- a convex surface or a flat surface of the light guiding section In particular, over flat surfaces can be produced easily recognizable luminous phenomena, which are not previously known in the art.
- the cooking appliance may have a plurality of heating elements below the cooking surface, wherein these are arranged in at least one row or their arrangement extending in the width or depth direction of the cooking surface.
- an induction cooking appliance can be constructed, in which the entire cooking surface is acted upon by heating elements in order to be able to carry out a freely selectable positioning of a pot on the cooking surface.
- a conceivable variant of the invention is such that the luminous element is arranged between two heating elements.
- the heating element and the lighting element can be electrified at a common electrical connection. As a result, a clear and simple contacting of the heating elements is possible.
- the induction coil may in particular comprise a copper coil including a holder (which is usually made of plastic).
- the induction coil can also be a temperature sensor or be associated with an electrical or optionally thermal insulation.
- the cooking appliance can also be equipped with a heating element in the form of an electric radiant heater or with a gas burner. Also conceivable are combination devices with different types of heating in one device.
- the invention can also be applied to grills or warming appliances, which also form cooking appliances within the scope of the invention.
- FIGS. 1a to 1i show various embodiments of rod-shaped optical fibers of a luminous element 30 wherein, with the exception of Figure 1g always two mutually angled light guide portions 34, 35 are used, which are integrally connected to each other via an angled portion 37.
- FIG. 1 a is selected a circular cross-section, which allows the light extraction via scattering or reflection region on the side facing away from the cooking surface of the light guide.
- FIG. 1b For this purpose, a light guide with a rectangular or square cross section is selected.
- Figure 1c shows a similar cross-sectional configuration of the light guide.
- the bend 37 is chosen so that the Lichtleitabroughe 34, 35 are at a low angle to each other. But they can also be arranged parallel to each other.
- Figure 1d is selected a rectangular cross-section for the light guide, wherein the height of the light guide is significantly greater than the width of the light guide.
- Figure 1e shows a further embodiment of a light guide.
- FIG. 1f shows a similar embodiment of a light guide as Figure 1c only with a round bar cross section.
- Figure 1g shows a variant of a cylindrical light guide.
- FIG. 1h shows a light guide similar to Figure 1d is designed, but has a lower height.
- FIG. 1i shows a light guide with a curved course.
- optical fibers are conceivable in which the extension can vary in the longitudinal direction in order to be able to realize emission regions 36 of different lengths.
- FIGS. 1e . 1l and 1m show light guides of a luminous element 30. These representations illustrate that the variation of the geometry of the radiating surface can vary both the extent of the light guide in depth and in width directions.
- Figures 1n to 1o optical fibers of a luminous element 30 are disclosed in which a plurality of Lichtleitabroughe 34, 35, 38 and 39 in one piece with each other are connected. It shows Figure 1n a bow-shaped geometry of the light guide, which is formed by a round rod. Figure 1m shows a bow-shaped geometry having a rectangular cross-section. 1o shows an optical waveguide design in which a further light-conducting section 39 terminates in the middle region between the two light-guiding sections 34 and 38.
- Illuminants 33 can be provided at the free end regions of the light-conducting sections 34, 38 and 39 in order to couple their light into the light guide.
- Figure 1q again shows a plate-shaped light guide, wherein the Lichtleitabites 35 has at its free end a concave geometry 30.1 to visualize an arcuate geometry, for example, the termination area of a heating element 20 can.
- FIG. 1r shows a light guide which is formed by a plate-shaped blank and two leg-like Lichtleitabitese 34 and 38 which pass over bends 37 in the Lichtleitabites 35.
- the light-guiding section 35 forms a large-area radiating surface 36.
- Figure 1s discloses a light guide having two plate-like Lichtleitabitese 34, 35, which merge via a bend 37 into each other.
- the Lichtleitabroughe 34, 35 are employed at a slight angle to each other or preferably arranged parallel to each other.
- Figure 1t discloses a similar variant as FIG. 1r However, wherein a smaller width of the Lichtleitabiteses 35 is selected so that a correspondingly narrower radiating surface 36 results.
- Figure 1u shows an embodiment of a light guide of the plate-like Lichtleitabroughe 34, 35 and 38, which merge via the bends 37 into each other.
- the Lichtleitabroughe 34, 38 are aligned parallel to each other.
- the Lichtleitabites 35 is provided with an opening 30.2, which preferably according to the geometry of the Heating element 20 has a circular shape.
- the breakthrough 30.2 is limited by the geometry edge 30.1.
- the radiation areas 36 are preferably arranged parallel to the bottom 12 of the cooking surface 10.
- the radiating surfaces 36 may also be at an angle to the bottom 12 of the cooking surface 10.
- FIG. 2 discloses an embodiment of a luminous element 30 with a two-part form of the light guide.
- an optical waveguide element in angular geometry is formed in one piece by the two light-conducting sections 34 and 35 or the angled section 37.
- the light guide section 34 is attached to a holder 60.
- the light guide section 35 is now inserted in a holder 70.
- the holder 70 carries a light guide section 38 designed as a rod profile.
- the light guide sections 35 and 38 are positioned in the holder 70 so that the light from the light element 33 coming from the light guide section 35 can be coupled into the light guide section 38.
- FIGS. 3a to 3e different embodiments of the invention are shown.
- a circular heating element 20 is symbolized in these representations, to which the emission areas 36 of luminous elements 30 are assigned.
- FIG. 3a indicates using the light guides FIG. 1i four arcuate radiating regions 36, which surround the heating element 20.
- FIG. 3b also shows using the light guides FIG. 1i two arcuate radiating regions 36 which surround the heating element 20.
- Figure 3c shows four line-shaped radiating regions 36, which surround the heating element 20, wherein the optical fibers according to Figure 1k be used.
- 3d figure shows four punctiform radiating regions 36 of bulbs 33 according to the use of the light guide according to Figure 1g are designed.
- a radiation region 36 is shown, which, using the light guide according to Figure 1u can be designed.
- FIGS. 4a to 4c illustrate that in a cooking appliance according to the invention a plurality of heating elements 20 may be installed.
- different emission regions 36 can be assigned to the section 42 in order to be able to optically mark either the boundary of the section 42 and / or to optically delimit individual heating elements 20.
- FIG. 4a shows not only in plan view circular heating elements 20, but also any other geometries of heating elements 20, for example, oval heating elements 20 can be used.
- Figure 4c shows that a plurality of rows of heating elements 20 may be installed on a section 42.
- FIG. 4d shows the rectangular shape of a mounted on a section 42 heating element 20.
- Bei FIG. 4a be optical fiber according to FIG. 1h or 1e , at FIG.
- FIG. 5 shows a cooking appliance for a surface induction application, wherein a plurality of induction coils 21 of heating elements 20 are mounted on a portion 42. Between the induction coils 21 lighting elements with light guides according to Figure 1g be arranged. Alternatively, according to FIG. 6 also a linear marking of the induction coils 21 with light sources, comprising light guides, for example according to the Figures 1j and 1k be used.
- FIG. 7 shows a cooking surface 10, which is preferably formed as a colored glass ceramic. It has an upper side 11 and a lower side 12. In the region of the underside 12, a coating 13 is applied to the cooking surface 10, which prevents inspection of the arranged in the area behind the bottom 12 of the cooking surface components.
- the coating 13 has partial interruptions 14, which serve as light passages. Thus, the coating 13 forms a mask.
- the viewing angle ⁇ 1 indicates up to which angle the user B can still perceive the light emitted by the illuminant 30 Leuchterscheinung.
- the cooking surface 10 is formed of a transparent glass material or a glass ceramic. It is colored to achieve a corresponding aesthetic appearance. In this case, the coloring can also be chosen such that a view through the glass ceramic is substantially prevented.
- heating elements are arranged in the area behind the bottom 12 of the cooking surface 10 in the area behind the bottom 12 of the cooking surface 10 in the area behind the bottom 12 of the cooking surface 10 heating elements are arranged.
- FIG. 8 shows the cooking appliance according to the invention, in contrast to FIG. 7 to improve the luminous appearance on the underside 12 of the cooking surface 10, a light-scattering element 15, in particular a light-scattering plane in the form of a roughening, organic or ceramic coating, a scattering film, a scattering glass or ceramic plate or a scattering plastic film is attached.
- the indirect carriers of the light-diffusing layer can either be bonded to the underside 12 with an adhesive layer or self-adhesively or loosely via pressure forces.
- the light scattering plane causes the viewing angle ⁇ 2 to widen and the parallax shift to be reduced, thereby detecting this luminous phenomenon is significantly improved for the user B.
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Induction Heating Cooking Devices (AREA)
- Electric Stoves And Ranges (AREA)
Abstract
Die Erfindung betrifft ein Kochgerät mit einer eingefärbten Kochfläche, bestehend aus einem Glas- oder Glaskeramikwerkstoff, wobei die Kochfläche eine mittlere Transmission von > 0,1% für mindestens einen der Spektralbereiche 420 bis 500 nm, 500 bis 550 nm und 550 bis 640 nm sowie eine maximale Transmission von < 50% bei 400-700 nm und zusätzlich eine Transmission von < 8% im Spektralbereich von 450-600 nm aufweist, wobei im Bereich unterhalb der Unterseite der Kochfläche wenigstens ein Heizelement und wenigstens ein Leuchtelement angeordnet sind, dadurch gekennzeichnet, dass die Kochfläche im Bereich ihrer Ober- und/oder Unterseite mit einer Beschichtung versehen ist, die im Bereich des oder der Leuchtelemente mit Aussparungen versehen ist, sodass sie eine Maskierung bildet, wobei auf der Unterseite der Kochfläche im Bereich der Aussparungen ein lichtstreuendes Element angebracht ist. The invention relates to a cooking appliance with a colored cooking surface, consisting of a glass or glass ceramic material, wherein the cooking surface has an average transmission of> 0.1% for at least one of the spectral ranges 420 to 500 nm, 500 to 550 nm and 550 to 640 nm and a maximum transmission of <50% at 400-700 nm and additionally a transmission of <8% in the spectral range of 450-600 nm, wherein in the area below the underside of the cooking surface at least one heating element and at least one luminous element are arranged, characterized that the cooking surface is provided in the region of its top and / or bottom with a coating which is provided in the region of the light emitting elements or with recesses, so that it forms a mask, wherein mounted on the underside of the cooking surface in the region of the recesses a light-scattering element is.
Description
Die Erfindung betrifft ein Kochgerät mit einer eingefärbten Kochfläche, bestehend aus einem Glas- oder Glaskeramikwerkstoff, wobei im Bereich unterhalb der Unterseite der Kochfläche wenigstens ein Heizelement und wenigstens ein Leuchtelement angeordnet sind.The invention relates to a cooking appliance with a colored cooking surface, consisting of a glass or glass ceramic material, wherein at least one heating element and at least one luminous element are arranged in the region below the underside of the cooking surface.
Aus dem Stand der Technik sind Kochgeräte mit Leuchtelementen bekannt, bei denen die Leuchtelemente zur Anzeige von Betriebszuständen verwendet sind.Cooking appliances with lighting elements are known from the prior art, in which the lighting elements are used to display operating conditions.
Induktionskochgeräte werden heute üblicherweise mit einer Glaskeramikscheibe als Kochfläche ausgebildet. Grundsätzlich sind auch andere Materialien, wie beispielsweise vorgespanntes Kalknatronglas oder Borosilikatglas als Kochflächenmaterial einsetzbar, wenn eine thermische Überhitzung dieser temperaturempfindlicheren Materialien vermieden werden kann.Induction cooking appliances are usually formed today with a glass ceramic disk as a cooking surface. In principle, other materials, such as, for example, tempered soda-lime glass or borosilicate glass, can also be used as cooking surface material if thermal overheating of these temperature-sensitive materials can be avoided.
Alle Materialien, sowohl Glaskeramik als auch Kalknatronglas oder Borosilikatglas sind sprödbrüchige Werkstoffe. Aus dem Stand der Technik bekannte Kochflächen, sind deshalb in der Regel im Bereich ihrer Unterseite mit einer noppenartigen oder dergleichen Strukturierung versehen. Zur Vermeidung von Glasbruch während der Montage, des Transports oder beim Betrieb des Kochgerätes in der Küche sind konstruktive Maßnahmen zu berücksichtigen. Eine Glas- oder Glaskeramikkochfläche kann die Energie eines herunterfallenden Topfes nicht durch Deformation der Oberfläche ausgleichen, wie beispielsweise eine Metalloberfläche es könnte. Vielmehr muss die Energie durch Schwingungen an die Umgebung weitergegeben werden. Wird sie daran gehindert, dann führt die Stoßbelastung zum Bruch der Kochfläche. Kochflächen werden aus diesem Grund so eingebaut, dass sie bei Stoßbelastungen zum Beispiel beim Herunterfallen eines Topfes auf die Kochfläche ausweichen können. Die Heizelemente, insbesondere Induktionsspulen werden federnd an die Unterseite der Kochfläche angedrückt, damit diese ebenfalls bei der Stoßbelastung nachgeben können.All materials, both glass ceramic and soda lime glass or borosilicate glass are brittle materials. Cooking surfaces known from the prior art are therefore generally provided with a nap-like or similar structuring in the region of their underside. To prevent glass breakage during assembly, transport or when operating the cooking appliance in the kitchen, constructive measures must be taken into account. A glass or glass ceramic cooking surface can not balance the energy of a falling pot by deformation of the surface, such as a metal surface it could. Rather, the energy has to be transmitted to the environment through vibrations. If she is prevented, then leads the Impact load to break the cooking surface. For this reason, cooking surfaces are installed in such a way that they can avoid shock loads, for example when a pot falls down on the cooking surface. The heating elements, in particular induction coils are resiliently pressed against the underside of the cooking surface, so that they can also give in at the impact load.
Leuchtelemente dienen zur Kochzonenmarkierung oder zur Visualisierung von Betriebszuständen, wie Kochsituationen oder Gefahrensituationen. Um eine gute Erkennbarkeit zu garantieren, sollen die Leuchtelemente möglichst dicht an die Unterseite der Kochfläche geführt werden. Dann werden Verluste durch Streuungen geringgehalten und es lässt sich eine gute Abbildungsschärfe und Helligkeit der Leucht-elemente erreichen. Die Leuchtelemente selber können u.a. aus Glas oder Glaskeramik sein und besitzen dabei die Eigenschaft, dass sich der Lichtaustritt entlang der Länge des Leuchtelementes bei Bedarf definieren lässt.Lighting elements are used for cooking zone marking or for visualization of operating conditions, such as cooking situations or dangerous situations. To ensure good visibility, the lighting elements should be as close as possible to the bottom of the cooking surface. Then losses due to scattering are kept low and it is possible to achieve a good image sharpness and brightness of the light-emitting elements. The lighting elements themselves may u.a. be glass or glass ceramic and thereby have the property that the light emission along the length of the light element can be defined if necessary.
Aus der
Ein weiteres Kochgerät ist aus der
Ein weiterer ringförmiger Lichtleiter ist aus der
Es ist Aufgabe der Erfindung, ein Kochgerät der eingangs erwähnten Art bereitzustellen, bei dem die Betriebssicherheit, die Bedienbarkeit und der Bedienkomfort verbessert sind.It is an object of the invention to provide a cooking appliance of the type mentioned, in which the reliability, usability and ease of use are improved.
Diese Aufgabe wird durch die Merkmale des unabhängigen Anspruchs gelöst. Vorteilhafte Ausgestaltungen und Weiterbildungen der Erfindung sind in den abhängigen Ansprüchen angegeben.This object is solved by the features of the independent claim. Advantageous embodiments and further developments of the invention are specified in the dependent claims.
Ein erfindungsgemäßes Kochgerät enthält eine eingefärbte Kochfläche, bestehend aus einem Glas- oder Glaskeramikwerkstoff, wobei die Kochfläche eine mittlere Transmission von > 0,1% für mindestens einen der Spektralbereiche 420 bis 500 nm, 500 bis 550 nm und 550 bis 640 nm sowie eine maximale Transmission von < 50% bei 400-700 nm und zusätzlich eine Transmission von < 8% im Spektralbereich von 450-600 nm aufweist, wobei im Bereich unterhalb der Unterseite der Kochfläche wenigstens ein Heizelement und wenigstens ein Leuchtelement angeordnet sind, dadurch gekennzeichnet, dass die Kochfläche im Bereich ihrer Ober- und/oder Unterseite mit einer Beschichtung versehen ist, die im Bereich des oder der Leuchtelemente mit Aussparungen versehen ist, sodass sie eine Maskierung bildet, wobei auf der Unterseite der Kochfläche im Bereich der Aussparungen ein lichtstreuendes Element angebracht ist.An inventive cooking appliance contains a colored cooking surface, consisting of a glass or glass ceramic material, wherein the cooking surface has an average transmission of> 0.1% for at least one of the spectral ranges 420 to 500 nm, 500 to 550 nm and 550 to 640 nm and a maximum Transmission of <50% at 400-700 nm and additionally has a transmission of <8% in the spectral range of 450-600 nm, wherein in the area below the underside of the cooking surface at least one heating element and at least one luminous element are arranged, characterized in that the Cooking surface is provided in the region of its top and / or bottom with a coating which is provided in the region of the light or elements with recesses, so that it forms a mask, wherein on the underside of the cooking surface in the region of the recesses, a light-diffusing element is attached.
Ein erfindungsgemäßes Kochgerät umfasst eine eingefärbte Kochfläche mit einer mittleren Transmission von > 0,1%, vorzugsweise > 0,4%, jeweils für mindestens einen, vorzugsweise für jeden der Spektralbereiche von 420 bis 500 nm, 500 bis 550 nm und 550 bis 640 nm beträgt. Hierbei können mit den Leuchtelementen durch die Kochfläche hindurch auf der von der Kochflächenvorderseite gebildeten Anzeigeseite genügend helle Farbeindrücke im blauen bis roten Spektralbereich hervorgerufen werden. Bei einer mittleren Transmission > 0,4 % können hierbei deutlich erkennbare und ausreichend helle Anzeigen verwirklicht werden. Um einen Einblick in den Innenaufbau der Kochgeräte zu verwehren und eine ästhetische, bevorzugt farbig gleichförmige, nicht transparente Kochfläche darzustellen, wird die maximale Transmission der Kochfläche mit < 50 %, vorzugsweise < 25 % bei 400 nm - 700 nm definiert, wobei zusätzlich die Transmission im Spektralbereich von 450 - 600 nm < 8 %, vorzugsweise < 4% beträgt. Bei einer maximalen Transmission < 25 % wird auch bei Lichteinstrahlung von außen der Einblick verwehrt.An inventive cooking appliance comprises a colored cooking surface with an average transmission of> 0.1%, preferably> 0.4%, in each case for at least one, preferably for each of the spectral ranges from 420 to 500 nm, 500 to 550 nm and 550 to 640 nm is. In this case, sufficiently bright color impressions in the blue to red spectral range can be produced with the luminous elements through the cooking surface on the display side formed by the cooking surface front side. With an average transmission> 0.4% clearly recognizable and sufficiently bright displays can be realized. In order to avoid an insight into the internal structure of the cooking appliances and to represent an aesthetic, preferably colored uniform, non-transparent cooking surface, the maximum transmission of the cooking surface is defined as <50%, preferably <25% at 400 nm - 700 nm, in addition to the transmission in the spectral range of 450-600 nm <8%, preferably <4% is. At a maximum transmission <25%, the view is also denied from the outside even in the case of light irradiation.
Ein erfindungsgemäßes Kochgerät ist derart beschaffen, dass die Kochfläche im Bereich ihrer Ober- und/oder Unterseite mit einer Beschichtung versehen ist. Die Beschichtung kann dabei funktionelle Eigenschaften aufweisen, wobei sie beispielsweise bei einer transparenten oder teiltransparenten Kochfläche eine Durchsicht auf die unter der Kochfläche angeordneten Einbauten verhindert. Zusätzlich oder alternativ kann die Beschichtung auch zur optischen Dekoration verwendet sein. Die Beschichtung ist im Bereich der Leuchtelemente mit Aussparungen versehen, sodass sie eine Maskierung bildet.An inventive cooking appliance is such that the cooking surface is provided in the region of its top and / or bottom with a coating. The coating may have functional properties, wherein it prevents, for example, in a transparent or semi-transparent cooking surface, a view of the arranged under the cooking surface internals. Additionally or alternatively, the coating can also be used for optical decoration. The coating is provided with recesses in the area of the lighting elements, so that it forms a mask.
Erfindungsgemäß ist auf der Unterseite der Kochfläche ein lichtstreuendes Element, beispielsweise eine lichtstreuende Ebene, beispielsweise in Form einer Aufrauhung, vorzugsweise einer Beschichtung, insbesondere einer organischen oder keramischen Beschichtung, einem Streuelement, beispielsweise einer streuenden Folie, einem streuenden Glas- oder Keramik-Plättchen oder einem streuenden Kunststofffilm, angebracht. Die vorgenannten Beschichtungen können beispielsweise gebildet werden unter Verwendung von: Sol-Gel-Materialien, Silikonen, Silikonharzen, Epoxyharzen, Metacrylaten, Polyurethan. Als keramische Anteile können (Farb-)Pigmente oder Streupartikel Verwendung finden. Wie vorstehend erwähnt, kann das lichtstreuende Element ein mittelbarer Träger sein oder einen solchen aufweisen. Beispiele für mittelbare Träger sind Gläser, Glaskeramiken oder Folien, die wiederum mit organischen und/oder keramischen Beschichtungen versehen sein können.According to the invention, a light-scattering element, for example in the form of a roughening, preferably a coating, in particular an organic or ceramic coating, a scattering element, for example a scattering film, a scattering glass or ceramic plate or a diffusing plastic film, attached. For example, the aforementioned coatings can be formed using: sol-gel materials, silicones, silicone resins, epoxy resins, methacrylates, polyurethane. As ceramic components, (color) pigments or scattering particles can be used. As mentioned above, the light-diffusing element may be or may be an intermediate support. Examples of indirect carriers are glasses, glass ceramics or films, which in turn may be provided with organic and / or ceramic coatings.
Die mittelbaren Träger der lichtstreuenden Schicht können entweder selbsthaftend, stoffschlüssig (beispielsweise mit einer Klebeschicht) oder lose über Andruckkräfte mit der Unterseite verbunden sein. Durch die Verbindung mit den örtlich begrenzten Leuchterscheinungen, die beispielsweise über eine Maskierung auf der Kochflächenunterseite begrenzt sind, bewirkt das lichtstreuende Element eine Aufweitung des Betrachtungswinkels und eine Reduzierung der Paralaxeverschiebung, wodurch die Erkennung dieser Leuchterscheinung für den Benutzer wesentlich verbessert und somit die Betriebssicherheit erhöht wird. Als Streumaterialien können beispielsweise die folgenden Stoffe Verwendung finden: Lexan 8B28 (SABIC Innovative Plastics), Macrofol BL / LT (Bayer), Plexiglas SATINICE® (Röhm), OPALIKA® Glas (SCHOTT).The indirect carriers of the light-scattering layer may be either self-adhesive, materially bonded (for example with an adhesive layer) or loosely connected by pressure forces to the underside. By the connection with the localized luminous phenomena, which are limited for example via a masking on the cooking surface underside, this causes light-diffusing element widening the viewing angle and reducing the Paralaxverschiebung, whereby the detection of this luminous appearance for the user significantly improved, and thus the reliability is increased. For example, the following materials can be used as scattering materials: Lexan 8B28 (SABIC Innovative Plastics), Macrofol BL / LT (Bayer), Plexiglas SATINICE® (Röhm), OPALIKA® Glass (SCHOTT).
Aus dem Stand der Technik sind Kochflächen bekannt, die aus Festigkeitsgründen im Bereich ihrer Unterseite mit einer noppenartigen oder dergleichen Strukturierung versehen sind. Um bei solchen Kochflächen eine verbesserte Anzeigequalität erreichen zu können, kann es vorgesehen sein, dass zumindest in Teilbereichen der Abstrahlfläche der Leuchtelemente eine Füllschicht aus transparentem Material auf die Unterseite der Kochfläche aufgebracht ist. Hierdurch werden die Streueffekte der strukturierten Unterseite reduziert bzw. ganz eliminiert. Die Füllschicht kann aus einem transparenten oder transluzenten Kunststoff, beispielsweise auch aus Silikon bestehen. Zur Verringerung des Teileaufwandes kann es aber auch vorgesehen sein, dass Kochflächen eingesetzt werden, die auf ihrer Unterseite glatt, also nicht strukturiert, insbesondere nicht genoppt sind.Cooking surfaces are known from the prior art, which are provided for reasons of strength in the region of its underside with a knob-like or similar structuring. In order to be able to achieve an improved display quality in such cooking surfaces, provision can be made for a filling layer of transparent material to be applied to the underside of the cooking surface at least in partial regions of the emitting surface of the lighting elements. As a result, the scattering effects of the structured underside are reduced or completely eliminated. The filling layer can consist of a transparent or translucent plastic, for example also of silicone. To reduce the parts cost, it may also be provided that cooking surfaces are used, which are smooth on its underside, so not structured, in particular not knotted.
Erfindungsgemäß kann es auch vorgesehen sein, dass zwischen der Oberseite der Kochfläche und dem Leuchtelement ein optischer Kompensationsfilter angeordnet ist. Ein solcher optischer Kompensationsfilter verschiebt den Lichtort der von dem Leuchtelement abgestrahlten Leuchterscheinung. Aufgrund der Verwendung einer eingefärbten Glaskeramik wird dann der Lichtort beim Durchtritt durch die Kochfläche nochmals verschoben. Der optische Kompensationsfilter kann nun derart auf das Material der Kochfläche abgestimmt sein, dass letztlich die gewünschte Farberscheinung auf der Anzeigenseite der Kochfläche erzeugbar ist. Hierdurch lassen sich insbesondere kostengünstige Leuchtelemente unter Verwendung von beispielsweise LEDs einsetzen. Als optische Kompensationsfilter lassen sich Filterfolien verwenden oder es können geeignete Filtermaterialien direkt auf die Unterseite der Kochfläche aufbeschichtet sein oder direkt vor dem Leuchtelement/ der LED angeordnet sein oder im Lichtleiter integriert sein oder am Lichtleiter angebracht sein. Der Kompensationsfilter kann zusätzlich auch so beschaffen sein, dass er eine Streuwirkung und damit Aufweitung des Betrachtungswinkels erzeugt.According to the invention, provision may also be made for an optical compensation filter to be arranged between the upper side of the cooking surface and the luminous element. Such an optical compensation filter shifts the location of the light emitted by the luminous element Leuchterscheinung. Due to the use of a colored glass ceramic, the light location is then shifted once more as it passes through the cooking surface. The optical compensation filter can now be matched to the material of the cooking surface, that ultimately the desired color appearance on the display side of the cooking surface can be generated. In this way, in particular cost-effective lighting elements using, for example, LEDs can be used. As optical Compensation filters can be used to filter films or it may be suitable filter materials directly coated on the underside of the cooking surface or be placed directly in front of the light emitting element / LED or be integrated in the light guide or attached to the light guide. In addition, the compensation filter can also be designed such that it generates a scattering effect and thus widening of the viewing angle.
Das Leuchtelement kann aus einem Lichtleiter, einer Lichtleiterhalterung und einem Leuchtmittel bestehen. Der Lichtleiter kann aus Kalknatronglas, Borosilikatglas, Quarz, Glaskeramik oder anderen transparenten, insbesondere hochtransparenten Glastypen gebildet sein. Solche Materialien sind bevorzugt, wenn eine Beleuchtung/Anzeige im Heißbereich der Kochfläche erreicht werden soll. Abhängig von der Umgebungstemperatur ist auch eine Verwendung von transparenten oder eingefärbten Kunststoffen, wie beispielsweise Plexiglas, Salzen oder Fluiden als Lichtleiter denkbar. Die Lichteinspeisung in die Lichtleiter kann üblicherweise mittels LEDs, die als handelsübliche LEDs in den Farben weiß, blau, rot und anderen Farben erhältlich sind erfolgen. Weiterhin können auch RGB-LEDs zur Erzeugung beliebiger Mischfarben eingesetzt sein. Anstatt von RGB-LEDs kann es auch vorgesehen sein, zwei farblich unterschiedliche LEDs zu verwenden, wobei diese LEDs gemeinsam in den Lichtleiter einstrahlen, um gezielt eine vorbestimmte Mischfarbe zu erzeugen. Denkbar ist es auch, dass verschiedenfarbige LEDs ihr Licht von zwei unterschiedlichen Orten in den Lichtleiter einstrahlen, um diesen in unterschiedlichen Farben zu beleuchten. Es ist auch denkbar, angepasste LEDs einzusetzen, die eine Farbverschiebung durch die eingefärbte Kochfläche dahingehend kompensieren, dass die gewünschte Farbe auf der Oberseite der Kochfläche sichtbar wird. Dies kann die ursprüngliche Farbe der LED aber auch eine von der ursprünglichen Lichtquelle abweichenden Farbe sein. Es ist auch vorstellbar, vor der Lichtquelle direkt einen Farbfilter vorzusetzen oder das Leuchtelement entsprechend als Filter zu gestalten. Hierbei kann insbesondere auch die Aufgabe erfüllt werden, wonach die Farbverschiebung durch die eingefärbte Kochfläche variiert, insbesondere kompensiert werden kann, wodurch insbesondere die ursprüngliche Farbe der LED wieder erzeugt wird oder ein anderer Farbton gezielt erzeugt wird.The luminous element may consist of a light guide, a light guide holder and a light source. The optical waveguide can be formed from soda-lime glass, borosilicate glass, quartz, glass-ceramic or other transparent, in particular highly transparent types of glass. Such materials are preferred when lighting / display in the hot area of the cooking surface is to be achieved. Depending on the ambient temperature is also a use of transparent or colored plastics, such as Plexiglas, salts or fluids as a light guide conceivable. The light feed into the light guide can usually be done by means of LEDs, which are available as commercially available LEDs in the colors white, blue, red and other colors. Furthermore, RGB LEDs can be used to generate any mixed colors. Instead of RGB LEDs, it may also be provided to use two differently colored LEDs, these LEDs radiating together into the light guide in order to selectively generate a predetermined mixed color. It is also conceivable that differently colored LEDs emit their light from two different locations in the light guide in order to illuminate this in different colors. It is also conceivable to use adapted LEDs, which compensate for a color shift through the colored cooking surface to the effect that the desired color is visible on the top of the cooking surface. This may be the original color of the LED but also a different color from the original light source. It is also conceivable to set a color filter directly in front of the light source or to design the light element accordingly as a filter. In this case, in particular, the task can be fulfilled, according to which the color shift by the colored cooking surface varies, in particular can be compensated, whereby in particular the original color of the LED is generated again or another hue is generated selectively.
Das Leuchtelement kann im Abstand zur Unterseite der Kochfläche angeordnet sein, wobei vorzugsweise ein Abstand im Bereich von 0,2 bis 10 mm, besonders bevorzugt 0,5 bis 5 mm, insbesondere bevorzugt 0,5 bis 2 mm vorgesehen ist. Der Abstandsbereich zwischen 0,5 mm bis 5 mm garantiert bei gleichzeitiger Beschädigungssicherheit insbesondere bei großformatigen eingefärbten Glas- oder Glaskeramikwerkstoffen für die Kochfläche eine ausreichend hohe Lichtausbeute zur Visualisierung einer Anzeige auf der Kochflächenvorderseite. Für derartige normal- bis kleinformatige Kochflächen kann auf einen Abstandsbereich von 0,5 bis 2 mm gegangen werden. Ein Abstandsbereich bis 10 mm kann vorgesehen sein, wenn hohe Durchbiegungen/Verstellungen der Kochfläche erwartet werden, bspw. bei großen Formaten, die gleichzeitig auch schwingbar gelagert sind.The luminous element can be arranged at a distance from the underside of the cooking surface, wherein preferably a distance in the range of 0.2 to 10 mm, particularly preferably 0.5 to 5 mm, particularly preferably 0.5 to 2 mm is provided. The distance range between 0.5 mm to 5 mm guaranteed with simultaneous damage, especially in large-sized colored glass or glass ceramic materials for the cooking surface a sufficiently high light output for visualization of a display on the cooking surface front. For such normal to small cooking surfaces can go to a distance range of 0.5 to 2 mm. A distance range of up to 10 mm can be provided if high deflections / displacements of the cooking surface are expected, for example, in the case of large formats which are at the same time mounted in a swingable manner.
Wenn ein erfindungsgemäßes Kochgerät dergestalt ist, dass das oder die Leuchtelemente ein Leuchtmittel und einen Lichtleiter mit wenigstens einem Lichtleitabschnitt aufweisen, in den das Leuchtmittel sein Licht einkoppelt, und dass der Lichtleitabschnitt oder ein mit dem Lichtleitabschnitt gekoppelter weiterer Lichtleitabschnitt einen Abstrahlbereich aufweist, über den das Licht des Leuchtmittels in Richtung auf die Unterseite der Kochfläche abstrahlbar ist, dann können gezielt individuelle Beleuchtungssituationen erzeugt werden. Die temperaturempfindlichen Leuchtmittel können insbesondere auch abseits der Heizelemente angeordnet sein. Mit den Lichtleitabschnitten lassen sich punktuelle oder flächenförmige Leuchterscheinungen gestalten.If a cooking appliance according to the invention is such that the lighting element (s) has a light source and a light guide with at least one light guide section into which the light source couples its light, and the light guide section or another light guide section coupled to the light guide section has a radiation area over which the light source Light of the bulb can be emitted toward the bottom of the cooking surface, then specific lighting situations can be generated specifically. The temperature-sensitive lighting means may in particular also be arranged away from the heating elements. With the Lichtleitabschnitten can be punctual or surface-shaped luminous phenomena.
Hierbei kann es auch vorgesehen sein, dass wenigstens einer der Lichtleitabschnitte als Flächenelement ausgebildet ist.In this case, it can also be provided that at least one of the light guide sections is formed as a surface element.
Wenn vorgesehen ist, dass wenigstens zwei Lichtleitabschnitte über eine Abwinklung einstückig ineinander übergehen, dann lässt sich über die einstückige Ausbildung zunächst ein geringer Teile- und Montageaufwand erreichen. Über die Lichtleitabschnitte können auch räumlich schwer zugängliche Bereiche unterhalb der Kochfläche zugänglich gemacht werden. Weiterhin können über die beiden im Winkel zueinanderstehenden Lichtleitabschnitte auch optische Einfassungen erzeugt werden, die einem Betrachter beispielsweise einen Kochzonenbereich markieren.If it is provided that at least two light-guiding sections merge into one another in one piece via an angling, then a low part and assembly effort can initially be achieved via the one-piece design. About the Lichtleitabschnitte spatially difficult to access areas below the cooking surface can be made accessible. Furthermore, it is also possible to produce optical enclosures by means of the two optical guide sections that are at an angle to one another, which mark a viewer, for example, a cooking zone area.
Der Abstrahlbereich der Leuchtelemente kann von einer konvexen Fläche oder einer ebenen Fläche des Lichtleitabschnittes gebildet sein. Insbesondere über ebene Flächen lassen sich gut erkennbare Leuchterscheinungen erzeugen, die so im Stand der Technik nicht vorbekannt sind.The emitting region of the lighting elements may be formed by a convex surface or a flat surface of the light guiding section. In particular, over flat surfaces can be produced easily recognizable luminous phenomena, which are not previously known in the art.
Das Kochgerät kann unterhalb der Kochfläche mehrere Heizelemente aufweisen, wobei diese in wenigstens einer Reihe angeordnet sind beziehungsweise deren Anordnung sich in Breiten- oder Tiefenrichtung der Kochfläche erstrecken. Auf diese Weise lässt sich insbesondere ein Induktionskochgerät aufbauen, bei der die gesamte Kochfläche mit Heizelementen beaufschlagt ist, um eine frei wählbare Positionierung eines Topfes auf der Kochfläche vornehmen zu können.The cooking appliance may have a plurality of heating elements below the cooking surface, wherein these are arranged in at least one row or their arrangement extending in the width or depth direction of the cooking surface. In this way, in particular, an induction cooking appliance can be constructed, in which the entire cooking surface is acted upon by heating elements in order to be able to carry out a freely selectable positioning of a pot on the cooking surface.
Eine denkbare Erfindungsvariante ist derart, dass das Leuchtelement zwischen zwei Heizelementen angeordnet ist.A conceivable variant of the invention is such that the luminous element is arranged between two heating elements.
Das Heizelement und das Leuchtelement können an einem gemeinsamen elektrischen Anschluss elektrifiziert werden. Hierdurch wird eine übersichtliche und einfache Kontaktierung der Heizelemente möglich.The heating element and the lighting element can be electrified at a common electrical connection. As a result, a clear and simple contacting of the heating elements is possible.
Bei Induktionskochgeräten kann die Induktionsspule insbesondere eine Kupferspule einschließlich Halterung (die meistens aus Kunststoff ausgebildet ist) umfassen. Zusätzlich kann der Induktionsspule auch ein Temperatursensor oder eine elektrische bzw. gegebenenfalls thermische Isolation zugeordnet sein. Im Rahmen der Erfindung kann das Kochgerät auch mit einem Heizelement in Form eines elektrischen Strahlungsheizkörpers oder mit einem Gasbrenner ausgestattet sein. Denkbar sind auch Kombinationsgeräte mit verschiedenen Beheizungsarten in einem Gerät. Weiterhin kann die Erfindung auch auf Grillgeräte oder Warmhaltegeräte angewendet werden, die im Rahmen der Erfindung ebenfalls Kochgeräte bilden.In induction cooking appliances, the induction coil may in particular comprise a copper coil including a holder (which is usually made of plastic). In addition, the induction coil can also be a temperature sensor or be associated with an electrical or optionally thermal insulation. In the context of the invention, the cooking appliance can also be equipped with a heating element in the form of an electric radiant heater or with a gas burner. Also conceivable are combination devices with different types of heating in one device. Furthermore, the invention can also be applied to grills or warming appliances, which also form cooking appliances within the scope of the invention.
Die Erfindung wird im Folgenden anhand von in den Zeichnungen dargestellten Ausführungsbeispielen näher erläutert. Es zeigen:
- Figuren 1 und 2
- verschiedene Darstellungen von Leuchtelementen,
- Figuren 3a-4e
- unterschiedliche Ausgestaltungsvarianten der Zuordnung von Leuchtelementen zu Heizelementen,
- Figur 5
- in Draufsicht einen Stützabschnitt für ein Kochgerät mit mehreren Heizelementen,
- Figur 6
- einen Stützabschnitt mit einer Vielzahl von Heizelementen,
- Figur 7
- ein Kochgerät mit einer Maskierung zur Einschränkung des Betrachtungswinkels einer Leuchterscheinung und
- Figur 8
- das Kochgerät gemäß
Fig. 7 mit einem Streuelement zur Erweiterung des Betrachtungswinkels durch Einführen einer lichtstreuenden Ebene auf der Kochflächenunterseite
- Figures 1 and 2
- various representations of luminous elements,
- FIGS. 3a-4e
- different design variants of the assignment of luminous elements to heating elements,
- FIG. 5
- in plan view a support portion for a cooking appliance with a plurality of heating elements,
- FIG. 6
- a support section with a plurality of heating elements,
- FIG. 7
- a cooking appliance with a mask to restrict the viewing angle of a light appearance and
- FIG. 8
- the cooking appliance according to
Fig. 7 with a scattering element for extending the viewing angle by introducing a light-scattering plane on the underside of the cooking surface
Die
Bei der Ausführungsvariante nach
Gemäß den
Die
In den
Bei den in den
In den
Die
Claims (13)
wobei die Kochfläche (10) eine mittlere Transmission von > 0,1% für mindestens einen der Spektralbereiche 420 bis 500 nm, 500 bis 550 nm und 550 bis 640 nm sowie eine maximale Transmission von < 50% bei 400-700 nm und zusätzlich eine Transmission von < 8% im Spektralbereich von 450-600 nm aufweist,
wobei im Bereich unterhalb der Unterseite (12) der Kochfläche (10) wenigstens ein Heizelement (20) und wenigstens ein Leuchtelement (30) angeordnet sind,
dadurch gekennzeichnet, dass
die Kochfläche (10) im Bereich ihrer Ober- (11) und/oder Unterseite (12) mit einer Beschichtung (13) versehen ist, die im Bereich des oder der Leuchtelemente (30) mit Aussparungen (14) versehen ist, sodass sie eine Maskierung bildet,
wobei auf der Unterseite (12) der Kochfläche (10) im Bereich der Aussparungen (14) ein lichtstreuendes Element (15) angebracht ist.Cooking appliance with a colored cooking surface (10) consisting of a glass or glass-ceramic material,
wherein the cooking surface (10) has an average transmission of> 0.1% for at least one of the spectral ranges 420 to 500 nm, 500 to 550 nm and 550 to 640 nm and a maximum transmission of <50% at 400-700 nm and in addition a Transmission of <8% in the spectral range of 450-600 nm,
wherein in the region below the underside (12) of the cooking surface (10) at least one heating element (20) and at least one luminous element (30) are arranged,
characterized in that
the cooking surface (10) in the region of its upper (11) and / or underside (12) is provided with a coating (13) which is provided in the region of the lighting elements (30) with recesses (14), so that they have a Masking forms,
wherein on the underside (12) of the cooking surface (10) in the region of the recesses (14) a light-scattering element (15) is mounted.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102013107523 | 2013-07-16 | ||
DE102013110277.8A DE102013110277B4 (en) | 2013-07-16 | 2013-09-18 | Cooking device with light elements |
EP14167301.2A EP2827064B1 (en) | 2013-07-16 | 2014-05-07 | Cooking apparatus with light elements |
Related Parent Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP14167301.2A Division-Into EP2827064B1 (en) | 2013-07-16 | 2014-05-07 | Cooking apparatus with light elements |
EP14167301.2A Division EP2827064B1 (en) | 2013-07-16 | 2014-05-07 | Cooking apparatus with light elements |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3321592A1 true EP3321592A1 (en) | 2018-05-16 |
Family
ID=50639354
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP14167301.2A Active EP2827064B1 (en) | 2013-07-16 | 2014-05-07 | Cooking apparatus with light elements |
EP17203551.1A Withdrawn EP3321592A1 (en) | 2013-07-16 | 2014-05-07 | Cooking apparatus with light elements |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP14167301.2A Active EP2827064B1 (en) | 2013-07-16 | 2014-05-07 | Cooking apparatus with light elements |
Country Status (6)
Country | Link |
---|---|
US (1) | US10228146B2 (en) |
EP (2) | EP2827064B1 (en) |
JP (1) | JP6621976B2 (en) |
CN (2) | CN104296200A (en) |
ES (1) | ES2880299T3 (en) |
PL (1) | PL2827064T3 (en) |
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EP3031785B1 (en) * | 2014-12-12 | 2018-10-17 | Schott AG | Method for producing a glass ceramic element having a structured coating |
US10314427B2 (en) * | 2015-07-27 | 2019-06-11 | Whirlpool Corporation | Light guide for generating illuminated indicia for an electric burner of a heating appliance |
US10314428B2 (en) | 2015-07-27 | 2019-06-11 | Whirlpool Corporation | Fiber optic light guide for generating illuminated indicia for an electric burner of a heating appliance |
WO2017108356A1 (en) * | 2015-12-25 | 2017-06-29 | Arcelik Anonim Sirketi | An induction heating cooker comprising a light source |
KR102493148B1 (en) | 2016-03-28 | 2023-01-27 | 엘지전자 주식회사 | Table |
CN105744665B (en) * | 2016-03-28 | 2019-01-25 | 邢昱 | Oscillatory type electromagnetic oven |
KR102493915B1 (en) * | 2016-06-03 | 2023-02-01 | 삼성전자주식회사 | Oven |
DE102018216818B4 (en) | 2018-09-28 | 2020-04-16 | Schott Ag | Worktop as well as a work table comprising a worktop |
EP3672363B1 (en) * | 2018-12-17 | 2021-05-05 | Electrolux Appliances Aktiebolag | Induction cooking hob with illumination equipment |
JP7241578B2 (en) * | 2019-03-15 | 2023-03-17 | リンナイ株式会社 | Liquid crystal display device and heating cooker provided with the same |
US11982447B2 (en) | 2021-11-29 | 2024-05-14 | Haier Us Appliance Solutions, Inc. | Appliance control panel lighting system |
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- 2014-05-07 EP EP14167301.2A patent/EP2827064B1/en active Active
- 2014-05-07 EP EP17203551.1A patent/EP3321592A1/en not_active Withdrawn
- 2014-07-15 CN CN201410336502.1A patent/CN104296200A/en active Pending
- 2014-07-15 CN CN201910676786.1A patent/CN110500622A/en active Pending
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Also Published As
Publication number | Publication date |
---|---|
EP2827064A1 (en) | 2015-01-21 |
ES2880299T3 (en) | 2021-11-24 |
US10228146B2 (en) | 2019-03-12 |
CN110500622A (en) | 2019-11-26 |
EP2827064B1 (en) | 2021-06-02 |
US20150021312A1 (en) | 2015-01-22 |
PL2827064T3 (en) | 2021-11-22 |
JP2015023028A (en) | 2015-02-02 |
JP6621976B2 (en) | 2019-12-18 |
CN104296200A (en) | 2015-01-21 |
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