EP2217036B2 - Kitchen worktop with induction hob - Google Patents

Kitchen worktop with induction hob Download PDF

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Publication number
EP2217036B2
EP2217036B2 EP10152083.1A EP10152083A EP2217036B2 EP 2217036 B2 EP2217036 B2 EP 2217036B2 EP 10152083 A EP10152083 A EP 10152083A EP 2217036 B2 EP2217036 B2 EP 2217036B2
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EP
European Patent Office
Prior art keywords
glass sheet
kitchen
cooktop
glass
hob
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EP10152083.1A
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German (de)
French (fr)
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EP2217036B1 (en
EP2217036A1 (en
Inventor
Michael Wollgram
Bernd Schultz
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Saint Gobain Glass France SAS
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Saint Gobain Glass France SAS
Compagnie de Saint Gobain SA
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    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/02—Induction heating
    • H05B6/10—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 comprises a kitchen worktop with an inductively heated hob, a method for its production and use.
  • Induction hobs are becoming more and more popular due to their good heating performance and many safety advantages.
  • heat is generated in ferromagnetic materials with the help of an alternating magnetic field. It enables the pots and pans to heat up quickly and at the same time ensures that the rest of the hob is not heated.
  • the hob only has the residual heat that is given off by the cooking appliances as reheating.
  • an induction cooker uses a larger part of the energy to generate heat in the pot and not on the hotplate.
  • the induction hob also offers advantages in terms of safety.
  • the induction hob is usually inserted into a recess in the kitchen worktop.
  • this process reduces the planarity of the worktop and creates new joints, which make hygienic cleaning of the worktop more difficult.
  • the joints are difficult to seal, so that water can get under the worktop. This ingress of water can damage the material of the worktop or the connected devices.
  • Moisture in crevices or joints is also an ideal breeding ground for mold, which is a problem that should not be underestimated when processing and preparing food.
  • completely planar worktops are in great demand in kitchens, also for aesthetic reasons.
  • DE 196 12 621 C2 discloses a hob with a hob made of glass or glass ceramic.
  • the hob has at least one cooking zone and one functional zone with operating elements.
  • the functional zone is embedded in a recess in the cooking surface using a hard, temperature and expansion-resistant material.
  • U1 discloses a worktop, in particular a kitchen worktop, counter top or counter cladding.
  • the worktop is made of glass.
  • the worktop contains scratch-resistant and dirt-repellent coatings.
  • WO 98/31198 A1 discloses an induction hob with a non-metallic hotplate.
  • the circuit arrangement enables the induction field to be switched on automatically for heating when a pot is placed on the hob.
  • the voltage can be regulated variably depending on the pot size.
  • EP 1 514 852 A1 discloses a transparent protective layer, in particular a scratch-resistant layer for glass.
  • the protective layer consists of at least one crystalline metal oxide layer which has at least one intermediate layer made of an amorphous, temperature-stable mixed oxide.
  • EP 1264 806 A1 , DE 102 43 500 A1 , EP 1 867 613 A1 and DE 10 2011 002556 A1 describe glass ceramic hobs with ceramic colors on the underside.
  • EP 0 716 270 A1 and JP H01 314511 A describe glass ceramic hobs with a scratch-resistant coating.
  • WO 2005/092810 A2 and U.S. 5,450,305 A describe hobs made of hardened glass.
  • the object of the invention is to provide a worktop with an integrated induction hob and scratch-resistant coating that does not have any recesses, joints, depressions, elevations, edges and / or other unevenness on the hob.
  • the worktop should be planar over the entire surface and have as uniform an appearance as possible.
  • the kitchen worktop with induction hob comprises at least one pane of glass with a length of more than 100 cm and a width of more than 40 cm.
  • the thickness of the glass pane can be selected by the person skilled in the art in the context of the application; thicknesses between 3 mm and 30 mm are preferred, particularly preferably 5 mm to 10 mm.
  • the inner area (A i ) delimited by the hob markings is less than 70%, preferably less than 50% of the total area (A G ) of the glass pane.
  • the inner area (A i ) results from the area resulting from the outer border of the hob marking. It corresponds to the minimum area in which all individual hobs are included. It depends on the number of each Hobs and their arrangement in relation to one another also have polygonal or rounded inner surfaces (A i ) possible.
  • the part of the glass pane surface not occupied by the inner surface (A i ) can be used as a work surface or storage surface on the kitchen worktop according to the invention.
  • An induction hob is attached under the hob markings on the back of the glass pane.
  • the induction hob is aligned so that suitable pots placed on the hob markings are heated.
  • the pots must contain a ferromagnetic material.
  • the areas of the glass pane adjacent to the pot are only slightly heated by the pot itself, but not by the induction field.
  • the glass pane preferably has a length of greater than 150 cm, preferably greater than 200 cm.
  • the size ranges of the glass pane length are preferably 150 cm to 400 cm, particularly preferably 200 cm to 300 cm.
  • the inner area (A i ) is preferably less than 50%, particularly preferably less than 30%, particularly preferably less than 20% of the total area (A G ) of the glass pane. This means that more than 70% of the glass pane can be used as work and storage space at the same time.
  • the underside of the glass pane has a ceramic color and / or a print. This means that the parts underneath the glass, such as the induction hob, are not visible. In principle, different ceramic colors are possible, but these must be temperature-resistant to the point that they can withstand the heat given off by the pot when the induction field is switched on. Examples of ceramic paints are emulsion paints containing inorganic pigments such as TiO 2 , Fe 2 O 3 , and Cr 2 O 3 and / or mixtures thereof.
  • the ceramic ink preferably comprises a ceramic screen printing ink.
  • the glass pane includes toughened safety glass. In addition to single-pane safety glass, multi-pane or laminated safety glass is also possible.
  • the inserted intermediate layers must, however, withstand the temperature fluctuations that arise in the area of the hob marking.
  • Optical and functional effects can be integrated with reflective or colored intermediate layers.
  • Examples of functional coatings are IR-reflecting intermediate layers, particularly preferably silver-containing intermediate layers.
  • the glass pane preferably contains cutouts, particularly preferably cutouts for fittings, sink, sink area and / or sink. It is thus possible to integrate appropriate wet fittings in the kitchen worktop according to the invention.
  • a corresponding sink is preferably mounted below the kitchen worktop according to the invention, so that the planar character of the work surface is not impaired.
  • the glass pane has a scratch-resistant coating on the surface, preferably containing metal oxides such as Al 2 O 3 , SiO 2 , ZrO 2 , SnO 2 , Y 2 O 3 , Si 3 N 4 and / or mixtures thereof.
  • the layer thickness is preferably 100 nm to 25000 nm, particularly preferably 1000 nm to 5000 nm.
  • This scratch-resistant coating prevents damage to the surface of the kitchen worktop according to the invention. In particular, placing kitchen appliances or cutting food on the worktop can easily scratch the work surface and disrupt the visual appearance. This does not affect the heating capacity of the cooking surfaces.
  • the glass pane preferably has lighting, particularly preferably LEDs or OLEDs, on the rear, i.e. on and / or to the side of the side with the attached induction hob. As a light source, these can illuminate the work surface from below and / or from the side.
  • the glass pane has a dirt-repellent, hydrophobic coating. This increases the contact angle of polar liquids such as water on the surface of the panes and thus reduces the wetting of the surface. The liquid drains off faster and cleans the surface. In addition, the formation of limescale is made more difficult.
  • Corresponding coatings can contain hydrophobic silanes such as alkyl alcohol silanes or alkyl chlorosilanes, for example octyltrimethoxysilane.
  • TiO 2 particles can be applied to the surface. When exposed to light, these catalytically decompose organic dirt particles on the pane surface.
  • Coatings with a hydrophobic and / or lipophobic effect for example fluorinated organic silanes, are also possible.
  • the invention also includes a method for producing the kitchen worktop according to the invention.
  • a pane of glass is provided. This is preferably cleaned and the edges of the disc sanded.
  • the hob markings are applied to the prepared pane. This can be done by scratching or printing heat-resistant ceramic paints. Another option is engraving using a suitable laser.
  • an induction hob is attached under the hob marking on the disc.
  • the term "attached” includes both a direct attachment to the pane, for example by means of suitable adhesive, and the non-fixed positioning under the pane. The distance can be determined by the effective radius of the induction hob.
  • the process involves applying a scratch-resistant coating to the glass pane.
  • the scratch-resistant coating is applied to the top of the glass, ie on the induction hob applied away from the side.
  • the process involves applying a hydrophobic, dirt-repellent coating to the glass pane.
  • the hydrophobic, dirt-repellent coating is applied to the top of the glass, i.e. on the side facing away from the induction hob.
  • the process involves applying a scratch-resistant coating to the glass pane and then applying a hydrophobic, dirt-repellent coating. This results in the layer structure of the glass pane, scratch-resistant coating and hydrophobic, dirt-repellent coating as the top layer.
  • the coating is applied to the top of the glass, i.e. on the side facing away from the induction hob.
  • the invention also includes the use of the kitchen worktop in a fitted kitchen and / or kitchenette.
  • the kitchen worktop according to the invention can be used in a kitchen unit and, for example, be provided with corresponding base cabinets.
  • a free-standing version with only suitable table legs is also possible.
  • the table legs can also be made of glass, so that the entire kitchen unit, except for the induction hob, can consist entirely of glass.
  • Figure 1 shows a schematic top view of the kitchen worktop.
  • the dimensions of the glass pane (1) result from the length of the pane (L) and the width (B) of the pane.
  • the hob markings (2) indicate the inner surface (A i ).
  • This inner area (A i ) results as the minimum area in which all the individual hobs (2a, 2b, 2c, 2d to 2n) are contained.
  • the area not occupied by the inner area (A i ) can be used as a work and storage area in the kitchen worktop according to the invention.
  • FIG. 2 shows a schematic cross section of the kitchen worktop according to the invention.
  • the induction hob (3) is attached to the glass pane (1) below the hob marking (2).
  • a fixed connection between the glass pane (1) and the induction hob (3) is not absolutely necessary.
  • the induction hob (3) must be arranged so close that the effective radius of the magnetic induction field allows the cookware to be heated.
  • FIG 3 shows a schematic view of the inventive use of the kitchen worktop (5) in a kitchen unit.
  • the kitchen worktop (5) according to the invention can be used in a kitchen unit and, for example, can be provided with corresponding base units (4).
  • the control elements for the induction hob (3) (In Figure 3 not shown) can be attached both as a touch field on the glass pane (1) and on the outer cladding.

Description

Die Erfindung umfasst eine Küchenarbeitsplatte mit induktiv beheiztem Kochfeld, ein Verfahren zu ihrer Herstellung und Verwendung.The invention comprises a kitchen worktop with an inductively heated hob, a method for its production and use.

Induktionskochfelder finden aufgrund ihrer guten Heizleistung und vielen Sicherheitsvorteilen eine immer größere Verbreitung. Bei einem Induktionskochfeld wird mit Hilfe eines magnetischen Wechselfeldes Wärme in ferromagnetischen Materialien erzeugt. Es ermöglicht ein schnelles Aufheizen der Töpfe und Pfannen und sorgt gleichzeitig dafür, dass der restliche Teil des Kochfeldes nicht erwärmt wird. Wird der Heizvorgang abgeschlossen, so hat das Kochfeld nur die Restwärme die von den Kochgeräten als Rückerwärmung abgegeben wird. Im Vergleich zu herkömmlichen Kochplatten wird beim Induktionsherd ein größerer Teil der Energie dazu verwendet, Wärme im Topf und nicht auf der Kochplatte zu erzeugen. Zudem bietet das Induktionskochfeld auch unter Sicherheitsaspekten Vorteile. Eine eingeschaltete Kochplatte heizt nur, wenn sich ein geeignetes Kochgeschirr aus einem ferromagnetischen Metall darauf befindet.Induction hobs are becoming more and more popular due to their good heating performance and many safety advantages. With an induction hob, heat is generated in ferromagnetic materials with the help of an alternating magnetic field. It enables the pots and pans to heat up quickly and at the same time ensures that the rest of the hob is not heated. When the heating process is completed, the hob only has the residual heat that is given off by the cooking appliances as reheating. Compared to conventional hotplates, an induction cooker uses a larger part of the energy to generate heat in the pot and not on the hotplate. In addition, the induction hob also offers advantages in terms of safety. A hotplate that is switched on only heats up if there is suitable cookware made of a ferromagnetic metal on it.

Wie alle Kochfelder wird auch das Induktionskochfeld in der Regel in eine Aussparung der Küchenarbeitsplatte eingesetzt. Dieser Vorgang verringert jedoch die Planarität der Arbeitsplatte und schafft neue Fugen, welche eine hygienische Reinigung der Arbeitsplatte erschweren. Zudem sind die Fugen nur schwer Abzudichten, so dass Wasser unter die Arbeitsplatte gelangen kann. Dieser Wassereintritt kann das Material der Arbeitsplatte oder der angeschlossenen Geräte beschädigen. Auch stellt Feuchtigkeit in Spalten oder Fugen einen idealen Nährboden für Schimmel dar, was bei Verarbeitung und Zubereitung von Lebensmitteln ein nicht zu unterschätzendes Problem darstellt. Neben diesen technischen und hygienischen Gesichtspunkten sind auch unter ästhetischen Gründen völlig planare Arbeitsplatten in Küchen sehr gefragt.Like all hobs, the induction hob is usually inserted into a recess in the kitchen worktop. However, this process reduces the planarity of the worktop and creates new joints, which make hygienic cleaning of the worktop more difficult. In addition, the joints are difficult to seal, so that water can get under the worktop. This ingress of water can damage the material of the worktop or the connected devices. Moisture in crevices or joints is also an ideal breeding ground for mold, which is a problem that should not be underestimated when processing and preparing food. In addition to these technical and hygienic aspects, completely planar worktops are in great demand in kitchens, also for aesthetic reasons.

DE 196 12 621 C2 offenbart ein Kochfeld mit einer Kochfläche aus Glas oder Glaskeramik. Das Kochfeld weist dabei mindestens eine Kochzone und eine Funktionszone mit Bedienungselementen auf. Die Funktionszone wird dabei über einen harten, Temperatur und ausdehnungsbeständigen Werkstoff in eine Aussparung der Kochfläche eingelassen. DE 196 12 621 C2 discloses a hob with a hob made of glass or glass ceramic. The hob has at least one cooking zone and one functional zone with operating elements. The functional zone is embedded in a recess in the cooking surface using a hard, temperature and expansion-resistant material.

DE 20 2004 021 071 U1 offenbart ein induktiv beheiztes Kochfeld mit einer Glas- oder Glaskeramikplatte als Kochfläche. Unterhalb der Kochfläche ist eine Wechselstrom gespeiste Induktionsspule angeordnet, welche auf der Kochfläche stehendes geeignetes Kochgeschirr erwärmt. Aufgrund des wechselnden magnetischen Feldes kann sich am Kochgeschirr eine elektrische Spannung aufbauen. Zur Vermeidung plötzlicher Entladungen enthält das Kochfeld daher auf der Unterseite eine elektrisch leitende, geerdete Schicht. DE 20 2004 021 071 U1 discloses an inductively heated hob with a glass or glass ceramic plate as the cooking surface. An induction coil fed by an alternating current is arranged below the cooking surface, which heats suitable cookware standing on the cooking surface. Due to the changing magnetic field, an electrical voltage can build up on the cookware. To avoid sudden discharges, the hob has an electrically conductive, grounded layer on the underside.

DE 20 2005 003 809 U1 offenbart eine Arbeitsplatte, insbesondere Küchenarbeitsplatte, Thekenplatte oder Thekenverkleidung. Die Arbeitsplatte wird aus Glas gebildet. In einer bevorzugten Ausführungsform enthält die Arbeitsplatte kratzfeste und schmutzabweisende Beschichtungen. DE 20 2005 003 809 U1 discloses a worktop, in particular a kitchen worktop, counter top or counter cladding. The worktop is made of glass. In a preferred embodiment, the worktop contains scratch-resistant and dirt-repellent coatings.

WO 98/31198 A1 offenbart ein Induktionskochfeld mit einer nichtmetallischen Kochplatte. Die Schaltungsanordnung ermöglicht das automatische Einschalten des Induktionsfeldes zum Erwärmen wenn ein Topf auf das Kochfeld gestellt wird. Zudem kann in Abhängigkeit von der Topfgröße die Spannung variabel geregelt werden. WO 98/31198 A1 discloses an induction hob with a non-metallic hotplate. The circuit arrangement enables the induction field to be switched on automatically for heating when a pot is placed on the hob. In addition, the voltage can be regulated variably depending on the pot size.

EP 1 514 852 A1 offenbart eine transparente Schutzschicht, insbesondere eine Kratzschutzschicht für Glas. Die Schutzschicht besteht mindestens aus einer kristallinen Metalloxidschicht, welche mindestens eine Zwischenschicht aus einem amorphen temperaturstabilen Mischoxid aufweist. EP 1 514 852 A1 discloses a transparent protective layer, in particular a scratch-resistant layer for glass. The protective layer consists of at least one crystalline metal oxide layer which has at least one intermediate layer made of an amorphous, temperature-stable mixed oxide.

US 3 740 513 A , DE 23 06 037 A1 , JP 49 118050 A und JP 2006 230517 A beschreiben glaskeramische Küchenarbeitsplatten mit Kochfeldern. U.S. 3,740,513 A , DE 23 06 037 A1 , JP 49 118050 A and JP 2006 230517 A describe glass ceramic kitchen worktops with hobs.

EP 1264 806 A1 , DE 102 43 500 A1 , EP 1 867 613 A1 und DE 10 2011 002556 A1 beschreiben glaskeramische Kochfelder mit keramischen Farben auf der Unterseite. EP 1264 806 A1 , DE 102 43 500 A1 , EP 1 867 613 A1 and DE 10 2011 002556 A1 describe glass ceramic hobs with ceramic colors on the underside.

EP 0 716 270 A1 und JP H01 314511 A beschreiben glaskeramische Kochfelder mit kratzfester Beschichtung. EP 0 716 270 A1 and JP H01 314511 A describe glass ceramic hobs with a scratch-resistant coating.

WO 2005/092810 A2 und US 5 450 305 A beschreiben Kochfelder aus gehärteten Gläsern. WO 2005/092810 A2 and U.S. 5,450,305 A describe hobs made of hardened glass.

Die Aufgabe der Erfindung liegt darin, eine Arbeitsplatte mit integriertem Induktionskochfeld und kratzfester Beschichtung bereitzustellen, die keine Aussparungen, Fugen, Vertiefungen, Anhebungen, Ränder und/oder andere Unebenheiten am Kochfeld aufweist. Die Arbeitsplatte soll auf der gesamten Oberfläche planar sein und ein möglichst einheitliches Erscheinungsbild aufweisen.The object of the invention is to provide a worktop with an integrated induction hob and scratch-resistant coating that does not have any recesses, joints, depressions, elevations, edges and / or other unevenness on the hob. The worktop should be planar over the entire surface and have as uniform an appearance as possible.

Die Aufgabe der vorliegenden Erfindung wird erfindungsgemäß durch eine Küchenarbeitsplatte mit Induktionskochfeld nach den unabhängigen Ansprüchen 1, 7 und 8 gelöst. Bevorzugte Ausführungen gehen aus den Unteransprüchen hervor.The object of the present invention is achieved according to the invention by a kitchen worktop with an induction hob according to independent claims 1, 7 and 8. Preferred embodiments emerge from the subclaims.

Die Küchenarbeitsplatte mit Induktionskochfeld umfasst mindestens eine Glasscheibe mit einer Länge von größer 100 cm und einer Breite von größer 40 cm. Die Dicke der Glasscheibe kann vom Fachmann im Rahmen der Anwendung gewählt werden, bevorzugt sind Dicken zwischen 3 mm und 30 mm, besonders bevorzugt 5 mm bis 10 mm.The kitchen worktop with induction hob comprises at least one pane of glass with a length of more than 100 cm and a width of more than 40 cm. The thickness of the glass pane can be selected by the person skilled in the art in the context of the application; thicknesses between 3 mm and 30 mm are preferred, particularly preferably 5 mm to 10 mm.

Auf der Glasscheibe sind Kochfeldmarkierungen aufgebracht. Die durch die Kochfeldmarkierungen begrenzte innere Fläche (Ai) ist kleiner als 70 %, bevorzugt kleiner 50 % der Gesamtfläche (AG) der Glasscheibe. Die innere Fläche (Ai) ergibt sich aus der durch äußere Umrandung der Kochfeldmarkierung resultierenden Fläche. Sie entspricht der minimalen Fläche in der alle einzelnen Kochfelder enthalten sind. Dabei sind in Abhängigkeit von der Anzahl der einzelnen Kochfelder und ihrer Anordnung zueinander auch mehreckige oder abgerundete innere Flächen (Ai) möglich. Der nicht von der inneren Fläche (Ai) belegte Teil der Glasscheibenoberfläche kann als Arbeits- oder Abstellfläche auf der erfindungsgemäßen Küchenarbeitsplatte genutzt werden.There are hob markings on the glass. The inner area (A i ) delimited by the hob markings is less than 70%, preferably less than 50% of the total area (A G ) of the glass pane. The inner area (A i ) results from the area resulting from the outer border of the hob marking. It corresponds to the minimum area in which all individual hobs are included. It depends on the number of each Hobs and their arrangement in relation to one another also have polygonal or rounded inner surfaces (A i ) possible. The part of the glass pane surface not occupied by the inner surface (A i ) can be used as a work surface or storage surface on the kitchen worktop according to the invention.

Unter den Kochfeldmarkierungen ist auf der Rückseite der Glasscheibe ein Induktionskochfeld angebracht. Das Induktionskochfeld ist dabei so ausgerichtet, dass geeignete, auf den Kochfeldmarkierungen abgestellte, Töpfe erwärmt werden. Die Töpfe müssen dabei ein ferromagnetisches Material enthalten. Die dem Topf benachbarten Bereiche der Glasscheibe werden nur durch den Topf selbst geringfügig erwärmt, nicht jedoch durch das Induktionsfeld.An induction hob is attached under the hob markings on the back of the glass pane. The induction hob is aligned so that suitable pots placed on the hob markings are heated. The pots must contain a ferromagnetic material. The areas of the glass pane adjacent to the pot are only slightly heated by the pot itself, but not by the induction field.

Die Glasscheibe weist bevorzugt eine Länge von größer 150 cm, bevorzugt größer 200 cm auf. Die Größenbereiche der Glasscheibenlänge sind bevorzugt 150 cm bis 400 cm, besonders bevorzugt 200 cm bis 300 cm.The glass pane preferably has a length of greater than 150 cm, preferably greater than 200 cm. The size ranges of the glass pane length are preferably 150 cm to 400 cm, particularly preferably 200 cm to 300 cm.

Die innere Fläche (Ai) ist bevorzugt kleiner als 50 %, besonders bevorzugt kleiner als 30 %, insbesondere bevorzugt kleiner 20 % der Gesamtfläche (AG) der Glasscheibe. Damit können gleichzeitig mehr als 70 % der Glasscheibe als Arbeits- und Abstellfläche genutzt werden.The inner area (A i ) is preferably less than 50%, particularly preferably less than 30%, particularly preferably less than 20% of the total area (A G ) of the glass pane. This means that more than 70% of the glass pane can be used as work and storage space at the same time.

Die Glasscheibe weist auf der Unterseite eine keramische Farbe und/oder einen Druck auf. Diese bewirkt, dass die unter der Glasscheibe liegenden Teile wie beispielsweise das Induktionskochfeld nicht sichtbar sind. Grundsätzlich sind verschiedene keramische Farben möglich, diese müssen jedoch so weit temperaturbeständig sein, dass sie der vom Topf bei eingeschaltetem Induktionsfeld abgegebenen Wärme widerstehen. Beispiele für keramische Farben sind Dispersionsfarben, enthaltend anorganische Pigmente wie TiO2, Fe2O3, und Cr2O3 und/oder Gemische davon.The underside of the glass pane has a ceramic color and / or a print. This means that the parts underneath the glass, such as the induction hob, are not visible. In principle, different ceramic colors are possible, but these must be temperature-resistant to the point that they can withstand the heat given off by the pot when the induction field is switched on. Examples of ceramic paints are emulsion paints containing inorganic pigments such as TiO 2 , Fe 2 O 3 , and Cr 2 O 3 and / or mixtures thereof.

Die keramische Farbe umfasst bevorzugt eine keramische Siebdruckfarbe.The ceramic ink preferably comprises a ceramic screen printing ink.

Die Glasscheibe umfasst Einscheibensicherheitsglas. Neben Einscheibensicherheitsglas sind auch Mehrscheiben- oder Verbundsicherheitsgläser möglich. Die eingelegten Zwischenschichten müssen jedoch den im Bereich der Kochfeldmarkierung entstehenden Temperaturschwankungen widerstehen.The glass pane includes toughened safety glass. In addition to single-pane safety glass, multi-pane or laminated safety glass is also possible. The inserted intermediate layers must, however, withstand the temperature fluctuations that arise in the area of the hob marking.

Mit reflektierenden oder farbigen Zwischenschichten lassen sich optische und funktionelle Effekte integrieren. Beispiele für funktionelle Beschichtungen sind IR reflektierende Zwischenschichten, besonders bevorzugt silberhaltige Zwischenschichten.Optical and functional effects can be integrated with reflective or colored intermediate layers. Examples of functional coatings are IR-reflecting intermediate layers, particularly preferably silver-containing intermediate layers.

Die Glasscheibe enthält bevorzugt Aussparungen, besonders bevorzugt Aussparungen für Armaturen, Spüle, Spülfeld und/oder Spülbecken. Damit ist es möglich in die erfindungsgemäße Küchenarbeitsplatte entsprechende Nassarmaturen zu integrieren. Ein entsprechendes Spülbecken wird bevorzugt unterhalb der erfindungsgemäßen Küchenarbeitsplatte montiert, so dass der planare Charakter der Arbeitsfläche nicht beeinträchtig wird.The glass pane preferably contains cutouts, particularly preferably cutouts for fittings, sink, sink area and / or sink. It is thus possible to integrate appropriate wet fittings in the kitchen worktop according to the invention. A corresponding sink is preferably mounted below the kitchen worktop according to the invention, so that the planar character of the work surface is not impaired.

Die Glasscheibe weist auf der Oberfläche eine kratzfeste Beschichtung auf, enthaltend bevorzugt Metalloxide wie Al2O3, SiO2, ZrO2, SnO2, Y2O3, Si3N4 und/oder Gemische davon. Die Schichtdicke liegt bevorzugt bei 100 nm bis 25000 nm, besonders bevorzugt bei 1000 nm bis 5000 nm. Diese kratzfeste Beschichtung verhindert Beschädigungen auf der Oberfläche der erfindungsgemäßen Küchenarbeitsplatte. Insbesondere das Abstellen von Küchengeräte oder das Schneiden von Lebensmitteln auf der Arbeitsplatte können die Arbeitsfläche leicht verkratzen und das optische Erscheinungsbild stören. Die Heizleistung der Kochflächen wird dadurch nicht beeinträchtigt.The glass pane has a scratch-resistant coating on the surface, preferably containing metal oxides such as Al 2 O 3 , SiO 2 , ZrO 2 , SnO 2 , Y 2 O 3 , Si 3 N 4 and / or mixtures thereof. The layer thickness is preferably 100 nm to 25000 nm, particularly preferably 1000 nm to 5000 nm. This scratch-resistant coating prevents damage to the surface of the kitchen worktop according to the invention. In particular, placing kitchen appliances or cutting food on the worktop can easily scratch the work surface and disrupt the visual appearance. This does not affect the heating capacity of the cooking surfaces.

Die Glasscheibe weist bevorzugt auf der Rückseite, d.h. auf und/oder seitlich der Seite mit dem angebrachten Induktionskochfeld, eine Beleuchtung, besonders bevorzugt LEDs oder OLEDs auf. Diese können als Leuchtquelle die Arbeitsfläche von unten und/oder von der Seite beleuchten.The glass pane preferably has lighting, particularly preferably LEDs or OLEDs, on the rear, i.e. on and / or to the side of the side with the attached induction hob. As a light source, these can illuminate the work surface from below and / or from the side.

Die Glasscheibe weist eine schmutzabweisende, hydrophobe Beschichtung auf. Diese erhöht den Kontaktwinkel von polaren Flüssigkeiten wie Wasser auf der Oberfläche der Scheiben und verringert damit die Benetzung der Oberfläche. Die Flüssigkeit läuft schneller ab und reinigt die Oberfläche. Zusätzlich wird damit die Bildung von Kalkablagerungen erschwert. Entsprechende Beschichtungen können hydrophobe Silane wie Alkylalkohol- bzw. Alkylchlorsilanen, beispielsweise Octyltrimethoxysilan enthalten. Zusätzlich können TiO2-Partikel auf der Oberfläche aufgebracht werden. Diese zersetzen unter Lichteinwirkung katalytisch organische Schmutzpartikel an der Scheibenoberfläche. Beispiele für derartige Beschichtungen werden auch in den Patentanmeldungen EP 0 850 204 A1 und EP 0 927 144 A1 offenbart. Möglich sind auch hydrophob und/oder lipophob wirkende Beschichtungen, beispielsweise fluorierte organische Silane.The glass pane has a dirt-repellent, hydrophobic coating. This increases the contact angle of polar liquids such as water on the surface of the panes and thus reduces the wetting of the surface. The liquid drains off faster and cleans the surface. In addition, the formation of limescale is made more difficult. Corresponding coatings can contain hydrophobic silanes such as alkyl alcohol silanes or alkyl chlorosilanes, for example octyltrimethoxysilane. In addition, TiO 2 particles can be applied to the surface. When exposed to light, these catalytically decompose organic dirt particles on the pane surface. Examples of such coatings are also given in the patent applications EP 0 850 204 A1 and EP 0 927 144 A1 disclosed. Coatings with a hydrophobic and / or lipophobic effect, for example fluorinated organic silanes, are also possible.

Die Erfindung beinhaltet des Weiteren ein Verfahren zur Herstellung der erfindungsgemäßen Küchenarbeitsplatte. In einem ersten Schritt wird eine Glasscheibe bereitgestellt. Diese wird bevorzugt gereinigt und die Kanten der Scheibe abgeschliffen.The invention also includes a method for producing the kitchen worktop according to the invention. In a first step, a pane of glass is provided. This is preferably cleaned and the edges of the disc sanded.

In einem zweiten Schritt werden die Kochfeldmarkierungen auf der vorbereiteten Scheibe angebracht. Dies kann durch Einritzen oder durch Aufdrucken hitzebeständiger Keramikfarben erfolgen. Eine weitere Möglichkeit ist die Gravur mithilfe eines geeigneten Lasers.In a second step, the hob markings are applied to the prepared pane. This can be done by scratching or printing heat-resistant ceramic paints. Another option is engraving using a suitable laser.

In einem abschließenden Schritt wird ein Induktionskochfeld unter der Kochfeldmarkierung der Scheibe angebracht. Der Ausdruck "angebracht" beinhaltet dabei sowohl eine direkte Befestigung an der Scheibe, beispielsweise durch geeignete Kleber, als auch die nicht feste Positionierung unter der Scheibe. Der Abstand kann dabei vom Wirkradius des Induktionskochfelds bestimmt werden.In a final step, an induction hob is attached under the hob marking on the disc. The term "attached" includes both a direct attachment to the pane, for example by means of suitable adhesive, and the non-fixed positioning under the pane. The distance can be determined by the effective radius of the induction hob.

Das Verfahren beinhaltet das Aufbringen einer kratzfesten Beschichtung auf der Glasscheibe. Die kratzfeste Beschichtung wird auf der Glasoberseite angebracht, d.h. auf der dem Induktionskochfeld abgewandten Seite aufgebracht.The process involves applying a scratch-resistant coating to the glass pane. The scratch-resistant coating is applied to the top of the glass, ie on the induction hob applied away from the side.

Das Verfahren beinhaltet das Aufbringen einer hydrophoben, schmutzabweisenden Beschichtung auf der Glasscheibe. Die hydrophobe, schmutzabweisende Beschichtung wird auf der Glassoberseite angebracht, d.h. auf der dem Induktionskochfeld abgewandten Seite aufgebracht.The process involves applying a hydrophobic, dirt-repellent coating to the glass pane. The hydrophobic, dirt-repellent coating is applied to the top of the glass, i.e. on the side facing away from the induction hob.

Das Verfahren beinhaltet das Aufbringen einer kratzfesten Beschichtung auf der Glasscheibe und das anschließende Aufbringen einer hydrophoben, schmutzabweisenden Beschichtung. Damit ergibt sich der Schichtaufbau Glasscheibe, kratzfeste Beschichtung und hydrophobe, schmutzabweisende Beschichtung als Deckschicht. Die Beschichtung wird auf der Glasoberseite, d.h. auf der dem Induktionskochfeld abgewandten Seite, aufgebracht.The process involves applying a scratch-resistant coating to the glass pane and then applying a hydrophobic, dirt-repellent coating. This results in the layer structure of the glass pane, scratch-resistant coating and hydrophobic, dirt-repellent coating as the top layer. The coating is applied to the top of the glass, i.e. on the side facing away from the induction hob.

Die Erfindung beinhaltet weiterhin die Verwendung der Küchenarbeitsplatte in einer Einbauküche und/oder Küchenzeile. Die erfindungsgemäße Küchenarbeitsplatte kann dabei in eine Küchenzeile eingesetzt werden und beispielsweise mit entsprechenden Unterbauschränken versehen werden. Auch eine freistehende Ausführung nur mit entsprechenden Tischbeinen ist möglich. Auch die Tischbeine können dabei aus Glas gefertigt sein, so dass die gesamte Küchenzeile bis auf das Induktionskochfeld vollständig aus Glas bestehen kann.The invention also includes the use of the kitchen worktop in a fitted kitchen and / or kitchenette. The kitchen worktop according to the invention can be used in a kitchen unit and, for example, be provided with corresponding base cabinets. A free-standing version with only suitable table legs is also possible. The table legs can also be made of glass, so that the entire kitchen unit, except for the induction hob, can consist entirely of glass.

Im Folgenden wird die Erfindung anhand der Figuren 1 bis 3 erläutert. Die Figuren sind rein schematische Darstellungen und sind nicht maßstabsgetreu. Sie beschränken die Erfindung in keiner Weise.In the following the invention is based on the Figures 1 to 3 explained. The figures are purely schematic representations and are not true to scale. They do not limit the invention in any way.

Die Erfindung wird anhand der Zeichnungen näher erläutert. Es zeigen:

  • Figur 1 zeigt eine schematische Draufsicht auf die erfindungsgemäße Küchenarbeitsplatte,
  • Figur 2 zeigt einen schematischen Querschnitt der erfindungsgemäßen Küchenarbeitsplatte,
  • Figur 3 zeigt eine schematische Ansicht der erfindungsgemäßen Verwendung der Küchenarbeitsplatte in einer Küchenzeile.
The invention is explained in more detail with reference to the drawings. Show it:
  • Figure 1 shows a schematic plan view of the kitchen worktop according to the invention,
  • Figure 2 shows a schematic cross section of the kitchen worktop according to the invention,
  • Figure 3 shows a schematic view of the inventive use of the kitchen worktop in a kitchen unit.

Figur 1 zeigt eine schematische Draufsicht der Küchenarbeitsplatte. Die Abmessungen der Glasscheibe (1) ergeben sich dabei über die Länge der Scheibe (L) und Breite (B) der Scheibe. Entsprechend berechnet sich die Gesamtfläche (AG) nach (AG) = (L)*(B). Die Kochfeldmarkierungen (2) geben dabei die innere Fläche (Ai) vor. Diese innere Fläche (Ai) ergibt sich dabei als minimale Fläche in der alle einzelnen Kochfelder (2a, 2b, 2c, 2d bis 2n) enthalten sind. Die nicht von der inneren Fläche (Ai) beanspruchte Fläche kann bei der erfindungsgemäßen Küchenarbeitsplatte als Arbeits- und Abstellfläche genutzt werden. Figure 1 shows a schematic top view of the kitchen worktop. The dimensions of the glass pane (1) result from the length of the pane (L) and the width (B) of the pane. The total area (A G ) is calculated according to (A G ) = (L) * (B). The hob markings (2) indicate the inner surface (A i ). This inner area (A i ) results as the minimum area in which all the individual hobs (2a, 2b, 2c, 2d to 2n) are contained. The area not occupied by the inner area (A i ) can be used as a work and storage area in the kitchen worktop according to the invention.

Figur 2 zeigt einen schematischen Querschnitt der erfindungsgemäßen Küchenarbeitsplatte. Das Induktionskochfeld (3) ist unter der Kochfeldmarkierung (2) an der Glasscheibe (1) angebracht. Eine feste Verbindung zwischen Glasscheibe (1) und Induktionskochfeld (3) ist nicht zwingend notwendig. Das Induktionskochfeld (3) muss vielmehr so nah angeordnet sein, das der Wirkungsradius des magnetischen Induktionsfeldes eine Erwärmung des Kochgeschirrs ermöglicht. Figure 2 shows a schematic cross section of the kitchen worktop according to the invention. The induction hob (3) is attached to the glass pane (1) below the hob marking (2). A fixed connection between the glass pane (1) and the induction hob (3) is not absolutely necessary. The induction hob (3) must be arranged so close that the effective radius of the magnetic induction field allows the cookware to be heated.

Figur 3 zeigt eine schematische Ansicht der erfindungsgemäßen Verwendung der Küchenarbeitsplatte (5) in einer Küchenzeile. Die erfindungsgemäße Küchenarbeitsplatte (5) kann in eine Küchenzeile eingesetzt werden und beispielsweise mit entsprechenden Unterbauschränken (4) versehen werden. Die Steuerungselemente für das Induktionskochfeld (3) (In Figur 3 nicht dargestellt) können sowohl als Touchfield auf der Glasscheibe (1) als auch an der Außenverkleidung angebracht werden. Figure 3 shows a schematic view of the inventive use of the kitchen worktop (5) in a kitchen unit. The kitchen worktop (5) according to the invention can be used in a kitchen unit and, for example, can be provided with corresponding base units (4). The control elements for the induction hob (3) (In Figure 3 not shown) can be attached both as a touch field on the glass pane (1) and on the outer cladding.

Die Bezugszeichen bedeuten dabei:The reference symbols mean:

(1)(1)
Glasscheibe,Glass pane,
(2)(2)
Kochfeldmarkierung,Hob marking,
(2a, 2b, 2c, 2d,... 2n)(2a, 2b, 2c, 2d, ... 2n)
einzelne Kochfeldmarkierungen,individual hob markings,
(3)(3)
Induktionskochfeld,Induction hob,
(4)(4)
Unterbauschränke undBase cabinets and
(5)(5)
erfindungsgemäße Küchenarbeitsplatte.kitchen worktop according to the invention.

Claims (8)

  1. Kitchen countertop having an induction cooktop at least comprising,
    a) a glass sheet (1) with a length (L) greater than 100 cm and a width (B) greater than 40 cm,
    b) cooktop markings (2) mounted on the glass sheet with an inner area (Ai) delimited by the cooktop markings less than 70 % of the total area (AG) of the glass sheet (1), characterized by
    c) an induction cooktop (3) mounted below the cooktop markings (2) and below the kitchen countertop and the glass sheet (1) has a ceramic color on the underside,
    d) the glass sheet (1) has a scratch-resistant coating on the surface, and
    e) the glass sheet (1) is made of single pane safety glass,
    wherein the glass sheet (1) has a contaminant-repellent, hydrophobic coating on the scratch-resistant coating as a top layer.
  2. Kitchen countertop according to claim 1, wherein the glass sheet (1) has a length (L) greater than 150 cm.
  3. Kitchen countertop according to claim 1 or 2, wherein the inner area (Ai) is less than 30%, preferably less than 20 % of the total area (AG) of the glass sheet.
  4. Kitchen countertop according to claim 1, wherein the ceramic color includes a ceramic screen printing ink.
  5. Kitchen countertop according to one of claims 1 through 4, wherein the glass sheet (1) includes cutouts for fixtures, a sink, a food washing area, and/or basins.
  6. Kitchen countertop according to one of claims 1 through 5, wherein the glass sheet (1) has lighting, preferably LEDs or OLEDs, on the underside and/or on the side.
  7. Method for producing a kitchen countertop according to one of claims 1 through 6, comprising:
    a.) providing a glass sheet (1),
    b.) applying cooktop markings (2), and
    c.) mounting an induction cooktop (3) under the cooktop marking,
    wherein a scratch-resistant coating is applied on the glass sheet (1) and then a contaminant-repellent, hydrophobic coating is applied on the scratch-resistant coating as a top layer.
  8. Use of the kitchen countertop according to one of claims 1 through 6, in a built-in kitchen, a kitchenette, a cafe, a bar, and/or a restaurant kitchen unit.
EP10152083.1A 2009-02-04 2010-01-29 Kitchen worktop with induction hob Active EP2217036B2 (en)

Applications Claiming Priority (1)

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DE102009007363A DE102009007363A1 (en) 2009-02-04 2009-02-04 Kitchen worktop with induction hob

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EP2217036B1 EP2217036B1 (en) 2017-07-19
EP2217036B2 true EP2217036B2 (en) 2021-01-13

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DE202010018464U1 (en) 2016-11-25
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