EP0464323A2 - Cooking hob - Google Patents

Cooking hob Download PDF

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Publication number
EP0464323A2
EP0464323A2 EP19910105796 EP91105796A EP0464323A2 EP 0464323 A2 EP0464323 A2 EP 0464323A2 EP 19910105796 EP19910105796 EP 19910105796 EP 91105796 A EP91105796 A EP 91105796A EP 0464323 A2 EP0464323 A2 EP 0464323A2
Authority
EP
European Patent Office
Prior art keywords
markings
plate
glass
cooking
hob
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP19910105796
Other languages
German (de)
French (fr)
Other versions
EP0464323A3 (en
EP0464323B1 (en
Inventor
Klaus Dipl.-Ing. Gressenich
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BOSCH-SIEMENS HAUSGERAETE GMBH
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP0464323A2 publication Critical patent/EP0464323A2/en
Publication of EP0464323A3 publication Critical patent/EP0464323A3/en
Application granted granted Critical
Publication of EP0464323B1 publication Critical patent/EP0464323B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • 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

Definitions

  • the innovation relates to a hob according to the preamble of protection claim 1.
  • the innovation is based on the task of further simplifying the markings and making them indestructible.
  • this object is achieved in that the markings are formed by the plate material itself, which in the area of these markings has a different material structure from the rest of the glass material.
  • markings can be produced in a simple manner by incorporating slight depressions in the plate surface, e.g. by laser technology in such a way that the surface of the depressions has a greater roughness (matting) than the rest of the plate surface.
  • the different surface structure of whatever type ensures that the markings are clearly recognizable on account of the different optical reflection behavior or the different optical refraction quotient compared to the other plate material.
  • Such optically recognizable material structures can be provided not only on the surface of the plate forming the surface of the hob, but also at any other point on the plate, e.g. also on the underside of the plate, where they appear clearly as cooking zone markings due to the hotplate heating operating in the glow temperature range.
  • the high field shown in the figures has a plate 1 made of glass-ceramic material, which is bordered by a frame 2. Such a hob can be used in a corresponding section of a kitchen worktop. Below the plate 1 there are several electric radiators, not shown, e.g. Radiant heater, arranged. To mark or mark the corresponding high surfaces immediately above these radiators, the plate 1 has markings 3 in the form of circular or oval lines, which mark circular or concentric cooking surfaces 4, 5, 6, 7 and an oval cooking surface 8 in their contours. As the sectional view according to FIG. 2 shows in particular, these markings 3 and 3 'are formed by linear material or surface structures which differ from the material or surface structure of the adjacent plate material. In Fig.
  • recesses 9 are provided in the plate surface with a surface structure that has a greater roughness than the surface structure of the plate 1. It is sufficient if these recesses 3 have a depth of a few hundredths of a millimeter; if necessary, a slight, line-shaped or point-shaped roughening of the plate surface is sufficient, as illustrated at point 3 'in FIG. 1.
  • Such a different material or surface structure can be produced in a simple manner by means of laser technology.

Abstract

In glass ceramic cooking hobs, a decoration is usually printed on the surface receiving the kitchenware, e.g. to mark the cooking areas. It is disadvantageous that, when the kitchenware is displaced on the receiving surface, this decoration is rubbed off and after a long period of use becomes unrecognisable. <??>According to the innovation, this is avoided in that, for marking e.g. the cooking areas, the markings are formed by the plate material itself, which has in the region of these markings, a material structure which is different, e.g. matt, from the usual glass material. <IMAGE>

Description

Die Neuerung bezieht sich auf ein Kochfeld gemäß dem Oberbegriff des Schutzanspruches 1.The innovation relates to a hob according to the preamble of protection claim 1.

Bei Glaskeramik-Kochfeldern ist es üblich, auf der ebenen Stellfläche ein Dekor aufzudrucken, insb. zum Zwecke der Markierung der einzelnen beheizbaren Hochflächen. Hierbei besteht das Problem, daß durch Verschieben von Geschirr oder Töpfen mit rauhen Boden das Dekor nach und nach abgerieben wird. Diese Nachteile werden gemäß einem anderem Vorschlag (DE-GM 88 01 334.0) dadurch weitgehend vermieden, daß in der Stellfläche der Platte an den Stellen des vorgesehenen Dekors Vertiefungen vorgesehen sind, die mit einem Dekormaterial, z.B. mit einer druckfähigen Dekorfarbe ausgefüllt sind.In the case of glass ceramic cooktops, it is customary to print a decor on the flat surface, especially for the purpose of marking the individual heatable high surfaces. The problem here is that the decor is gradually rubbed off by moving dishes or pots with a rough bottom. According to another proposal (DE-GM 88 01 334.0), these disadvantages are largely avoided by providing recesses in the footprint of the plate at the locations of the decor provided, which are filled with a decorative material, for example with a printable decorative paint.

Der Neuerung liegt die Aufgabe zugrunde, die Markierungen noch weiter zu vereinfachen und unzerstörbar zu gestalten.The innovation is based on the task of further simplifying the markings and making them indestructible.

Diese Aufgabe wird neuerungsgemäß dadurch gelöst, daß die Markierungen durch das Plattenmaterial selbst gebildet sind, das im Bereich dieser Markierungen eine von dem übrigen Glasmaterial unterschiedliche Materialstruktur aufweist.According to the innovation, this object is achieved in that the markings are formed by the plate material itself, which in the area of these markings has a different material structure from the rest of the glass material.

In einfacher Weise können diese Markierungen hergestellt werden durch Einarbeitung von geringfügigen Vertiefungen in die Plattenoberfläche, z.B. durch Laser-Technik derart, daß die Oberfläche der Vertiefungen eine größere Rauhigkeit (Mattierung) besitzt als die übrige Plattenoberfläche. In jedem Falle ist durch die unterschiedliche Oberflächenstruktur gleich welcher Art gewährleistet, daß aufgrund des gegenüber dem übrigen Plattenmaterial unterschiedlichen optischen Reflexionsverhaltens bzw. des unterschiedlichen optischen Brechungsquotienten die Markierungen deutlich erkennbar sind. Solche optisch gut erkennbare Materialstrukturen können nicht nur an der die Stellfläche des Kochfeldes bildenden Plattenoberfläche, sondern auch an jeder anderen Stelle der Platte vorgesehen sein, z.B. auch an der Unterseite der Platte, wo sie infolge der im Glühtemperaturbereich betriebenen Kochstellenheizung als Kochstellenmarkierungen deutlich in Erscheinung treten.These markings can be produced in a simple manner by incorporating slight depressions in the plate surface, e.g. by laser technology in such a way that the surface of the depressions has a greater roughness (matting) than the rest of the plate surface. In any case, the different surface structure of whatever type ensures that the markings are clearly recognizable on account of the different optical reflection behavior or the different optical refraction quotient compared to the other plate material. Such optically recognizable material structures can be provided not only on the surface of the plate forming the surface of the hob, but also at any other point on the plate, e.g. also on the underside of the plate, where they appear clearly as cooking zone markings due to the hotplate heating operating in the glow temperature range.

Die Neuerung ist anhand eines in der Zeichnung dargestellten Ausführungsbeispieles nachstehend erläutert.

Fig. 1
zeigt in perspektivischer Darstellung ein elektrisches Kochfeld und
Fig. 2
in vergrößerter Darstellung, ausschnittsweise einen Schnitt entlang der Linie II-II in Fig. 1.
The innovation is explained below using an exemplary embodiment shown in the drawing.
Fig. 1
shows a perspective view of an electric hob and
Fig. 2
in an enlarged view, a section of a section along the line II-II in Fig. 1st

Das in den Figuren dargestellte Hochfeld besitzt eine Platte 1 aus glaskeramischem Material, die eingefaßt ist von einem Rahmen 2. Ein solches Kochfeld ist einsetzbar in einen entsprechenden Ausschnitt einer Küchen-Arbeitsplatte. Unterhalb der Platte 1 sind mehrere, nicht weiter dargestellte elektrische Heizkörper, z.B. Strahlungsheizkörper, angeordnet. Zur Markierung oder Kennzeichnung der entsprechenden Hochflächen unmittelbar oberhalb dieser Heizkörper besitzt die Platte 1 Markierungen 3 in Form von kreisrunden oder ovalen Linien, die kreisrunde bzw. konzentrische Kochflächen 4, 5, 6, 7 sowie eine ovale Kochfläche 8 in ihren Umrissen kennzeichnen. Wie insb. die Schnittdarstellung gemäß Fig. 2 zeigt, werden diese Markierungen 3 bzw. 3'gebildet durch linienförmige Material- bzw. Oberflächenstrukturen, die von der Material bzw. Oberflächenstruktur des angrenzenden Plattenmaterials unterschiedlich ist. In Fig. 2 ist angedeutet, daß in die Plattenoberfläche eingearbeitete Vertiefungen 9 vorgesehen sind mit einer Oberflächenstruktur, die eine größere Rauhigkeit hat als die Oberflächenstruktur der Platte 1. Es genügt, wenn diese Vertiefungen 3 eine Tiefe von wenigen hundertstel Millimeter besitzen; gegebenenfalls genügt ein leichtes, linienförmiges oder auch punktförmiges Aufrauhen der Plattenoberfläche, wie an der Stelle 3' in Fig. 1 verdeutlicht. In einfacher Weise kann eine solche unterschiedliche Material- oder Oberflächenstruktur mittels Laser-Technik erzeugt werden.The high field shown in the figures has a plate 1 made of glass-ceramic material, which is bordered by a frame 2. Such a hob can be used in a corresponding section of a kitchen worktop. Below the plate 1 there are several electric radiators, not shown, e.g. Radiant heater, arranged. To mark or mark the corresponding high surfaces immediately above these radiators, the plate 1 has markings 3 in the form of circular or oval lines, which mark circular or concentric cooking surfaces 4, 5, 6, 7 and an oval cooking surface 8 in their contours. As the sectional view according to FIG. 2 shows in particular, these markings 3 and 3 'are formed by linear material or surface structures which differ from the material or surface structure of the adjacent plate material. In Fig. 2 it is indicated that recesses 9 are provided in the plate surface with a surface structure that has a greater roughness than the surface structure of the plate 1. It is sufficient if these recesses 3 have a depth of a few hundredths of a millimeter; if necessary, a slight, line-shaped or point-shaped roughening of the plate surface is sufficient, as illustrated at point 3 'in FIG. 1. Such a different material or surface structure can be produced in a simple manner by means of laser technology.

Claims (2)

Kochfeld mit einer ebenen, durch eine Platte aus Glas oder glaskeramischem Material gebildeten Geschirr-Stellfläche, die insb. zur Kennzeichnung der beheizbaren Kochflächen Markierungen in Form von Linien, Punkten oder dergleichen aufweist, dadurch gekennzeichnet, daß die Markierungen (3) durch das Plattenmaterial selbst gebildet sind, das im Bereich dieser Markierungen eine von dem übrigen Glasmaterial unterschiedliche Materialstruktur aufweist.Hob with a flat, shelf space formed by a plate made of glass or glass-ceramic material, which in particular has markings in the form of lines, dots or the like to identify the heated cooking surfaces, characterized in that the markings (3) are formed by the plate material itself are formed, which has a different material structure from the rest of the glass material in the area of these markings. Kochfeld nach Anspruch 1, dadurch gekennzeichnet, daß die Markierungen (3) durch in die Plattenoberfläche eingearbeitete Vertiefung (9) gebildet sind, deren Oberflächenstruktur von derjenigen der diese umgebenden Oberflächen z.B. durch Mattierung unterschiedlich ist.Hob according to Claim 1, characterized in that the markings (3) are formed by a recess (9) machined into the surface of the plate, the surface structure of which differs from that of the surfaces surrounding it, e.g. is different due to matting.
EP91105796A 1990-07-03 1991-04-11 Cooking hob Expired - Lifetime EP0464323B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE9010072U DE9010072U1 (en) 1990-07-03 1990-07-03
DE9010072U 1990-07-03

Publications (3)

Publication Number Publication Date
EP0464323A2 true EP0464323A2 (en) 1992-01-08
EP0464323A3 EP0464323A3 (en) 1992-02-19
EP0464323B1 EP0464323B1 (en) 1994-10-12

Family

ID=6855222

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91105796A Expired - Lifetime EP0464323B1 (en) 1990-07-03 1991-04-11 Cooking hob

Country Status (6)

Country Link
US (1) US5261387A (en)
EP (1) EP0464323B1 (en)
JP (1) JPH04227427A (en)
AT (1) ATE112841T1 (en)
DE (2) DE9010072U1 (en)
ES (1) ES2063393T3 (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4333334A1 (en) * 1993-09-30 1995-04-06 Schott Glaswerke Glass ceramic plate as part of a cooking appliance
US6257228B1 (en) * 1999-04-19 2001-07-10 Curvet Spa Tempered glass hob for kitchen
DE10000657A1 (en) * 2000-01-11 2001-08-16 Schott Glas Glass ceramic plate
FR2879592A1 (en) * 2005-01-20 2006-06-23 Schott Ag Flat glass-ceramic component, comprises a matt area formed by coating glass on the glass-ceramic using a sieve printing technique
WO2008110447A2 (en) * 2007-03-13 2008-09-18 BSH Bosch und Siemens Hausgeräte GmbH Cooking hob with a temperature sensor area
EP2094060A3 (en) * 2008-02-25 2013-11-20 Samsung Electronics Co., Ltd. Electric range and induction coil unit used therein

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USD384239S (en) * 1993-02-15 1997-09-30 Bosch-Siemens Hausgeraete Gmbh Cooktop
US5640947A (en) * 1995-02-15 1997-06-24 Shute; Alan B. Counter-top cooking unit using natural stone
USD431156S (en) * 1996-04-24 2000-09-26 Lewis Robert A Surface ornamentation for a control panel on a range top
DE19700551A1 (en) * 1997-01-10 1998-07-16 Ego Elektro Geraetebau Gmbh Hob for electric cooker
DE29722103U1 (en) * 1997-12-16 1998-03-05 Schulte Uwe Hob arrangement
DE19825310A1 (en) * 1998-06-05 1999-12-09 Bsh Bosch Siemens Hausgeraete Control unit for an electrical household appliance
JP2000034342A (en) * 1998-07-16 2000-02-02 Nippon Ester Co Ltd Production of polyester
DE10237845A1 (en) * 2002-08-19 2004-03-04 Cramer Sr, S.R.O. kitchen top
DE102004002766B4 (en) * 2004-01-20 2008-10-16 Schott Ag Glass ceramic plate with at least one frosted area and method for producing such a glass ceramic plate
GB0404630D0 (en) * 2004-03-02 2004-04-07 Ceramaspeed Ltd Electric heating assembly
FR2896305B1 (en) * 2006-01-16 2015-01-23 Eurokera VITROCERAMIC PLATES, PROCESS FOR PRODUCING THE SAME, AND COOKING TABLES EQUIPPED WITH THE SAME
USD708003S1 (en) * 2010-12-27 2014-07-01 Western Industries, Inc. Cook top
DE102016111438A1 (en) 2016-06-22 2017-12-28 Schott Ag Glass ceramic element with intrinsic decoration and process for its production

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3406279A (en) * 1965-11-12 1968-10-15 Corning Glass Works Cooking surfaces
JPS6129626A (en) * 1984-07-20 1986-02-10 Matsushita Electric Ind Co Ltd Electric cooking heater
DE3433880A1 (en) * 1984-09-14 1986-03-27 Bosch-Siemens Hausgeräte GmbH, 7000 Stuttgart Cooking hob
DE8801334U1 (en) * 1988-02-03 1988-03-17 Bosch-Siemens Hausgeraete Gmbh, 8000 Muenchen, De
DE8804925U1 (en) * 1988-04-14 1988-06-23 Buderus Kuechentechnik Gmbh, 6348 Herborn, De
EP0313137A1 (en) * 1987-10-21 1989-04-26 Koninklijke Philips Electronics N.V. Electric cooking apparatus

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2870828A (en) * 1953-09-14 1959-01-27 Selas Corp Of America Radiant heat gas range burner
US3947652A (en) * 1974-06-28 1976-03-30 White-Westinghouse Corporation Cooking surface assembly for an induction range
NL176301C (en) * 1974-08-24 Schwank Gmbh APPLIANCE WITH AT LEAST ONE GAS BURNER FOR A HOB.

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3406279A (en) * 1965-11-12 1968-10-15 Corning Glass Works Cooking surfaces
JPS6129626A (en) * 1984-07-20 1986-02-10 Matsushita Electric Ind Co Ltd Electric cooking heater
DE3433880A1 (en) * 1984-09-14 1986-03-27 Bosch-Siemens Hausgeräte GmbH, 7000 Stuttgart Cooking hob
EP0313137A1 (en) * 1987-10-21 1989-04-26 Koninklijke Philips Electronics N.V. Electric cooking apparatus
DE8801334U1 (en) * 1988-02-03 1988-03-17 Bosch-Siemens Hausgeraete Gmbh, 8000 Muenchen, De
DE8804925U1 (en) * 1988-04-14 1988-06-23 Buderus Kuechentechnik Gmbh, 6348 Herborn, De

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 10, no. 181 (M-492)(2237) 25. Juni 1986 & JP-A-61 029 626 ( MATSUSHITA ) 10. Februar 1986 *

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4333334A1 (en) * 1993-09-30 1995-04-06 Schott Glaswerke Glass ceramic plate as part of a cooking appliance
US5549100A (en) * 1993-09-30 1996-08-27 Schott Glaswerke Plate of glass ceramic as component of a cooking appliance
US6257228B1 (en) * 1999-04-19 2001-07-10 Curvet Spa Tempered glass hob for kitchen
DE10000657A1 (en) * 2000-01-11 2001-08-16 Schott Glas Glass ceramic plate
US6492624B2 (en) 2000-01-11 2002-12-10 Schott Glass Stove or grill for cooking, and a stove or grill for cooking having a glass ceramic cook top or hob, and a glass ceramic plate cook top or hob for use in a stove or grill
DE10000657C2 (en) * 2000-01-11 2002-12-12 Schott Glas Glass ceramic plate
FR2879592A1 (en) * 2005-01-20 2006-06-23 Schott Ag Flat glass-ceramic component, comprises a matt area formed by coating glass on the glass-ceramic using a sieve printing technique
WO2008110447A2 (en) * 2007-03-13 2008-09-18 BSH Bosch und Siemens Hausgeräte GmbH Cooking hob with a temperature sensor area
WO2008110447A3 (en) * 2007-03-13 2009-03-26 Bsh Bosch Siemens Hausgeraete Cooking hob with a temperature sensor area
EP2094060A3 (en) * 2008-02-25 2013-11-20 Samsung Electronics Co., Ltd. Electric range and induction coil unit used therein

Also Published As

Publication number Publication date
EP0464323A3 (en) 1992-02-19
DE59103209D1 (en) 1994-11-17
US5261387A (en) 1993-11-16
ES2063393T3 (en) 1995-01-01
ATE112841T1 (en) 1994-10-15
EP0464323B1 (en) 1994-10-12
DE9010072U1 (en) 1990-09-06
JPH04227427A (en) 1992-08-17

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