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DE19633706A1 - Glass ceramic cooking plate - Google Patents

Glass ceramic cooking plate

Info

Publication number
DE19633706A1
DE19633706A1 DE1996133706 DE19633706A DE19633706A1 DE 19633706 A1 DE19633706 A1 DE 19633706A1 DE 1996133706 DE1996133706 DE 1996133706 DE 19633706 A DE19633706 A DE 19633706A DE 19633706 A1 DE19633706 A1 DE 19633706A1
Authority
DE
Germany
Prior art keywords
glass ceramic
thickness
knob
capacitive sensor
strip
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
DE1996133706
Other languages
German (de)
Other versions
DE19633706C2 (en
Inventor
Klaus Dipl Ing Gressenich
Georg Dipl Ing Brandl
Andreas Dipl Ing Horn
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BSH Hausgeraete GmbH
Original Assignee
Bosch Siemens Hausgerate GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Bosch Siemens Hausgerate GmbH filed Critical Bosch Siemens Hausgerate GmbH
Priority to DE1996133706 priority Critical patent/DE19633706C2/en
Publication of DE19633706A1 publication Critical patent/DE19633706A1/en
Application granted granted Critical
Publication of DE19633706C2 publication Critical patent/DE19633706C2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05BELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00Ohmic-resistance heating
    • H05B3/68Heating arrangements specially adapted for cooking plates or analogous hot-plates
    • H05B3/74Non-metallic plates, e.g. vitroceramic, ceramic or glassceramic hobs, also including power or control circuits

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Switches That Are Operated By Magnetic Or Electric Fields (AREA)

Abstract

In the area of the capacitive sensor switches, the support material glass ceramic (1) has knob-less strips (2) on the under side. The knob-less zone touches an edge strip. The material thickness of the knob-less strip zone is the thickness of the glass ceramic cooking surface reduced by the knob height (3). The individual knobs, according to the type of glass ceramic, can fluctuate between 40 and 200 micrometres in height. In one specific version, the thickness (d) of the edge strip is equal to the thickness (D) of the glass ceramic surface, which means that resistance to breakage is increased.

Description

Die Erfindung betrifft ein Glaskeramik-Kochfeld mit mindestens drei Strahlungsheizkör­ pern, die unterhalb der Glaskeramik-Kochfläche angeordnet sind und mittels kapazitiver Sensorschalter bedienbar sind.The invention relates to a glass ceramic hob with at least three radiant heaters pern, which are arranged below the glass ceramic cooktop and by means of capacitive Sensor switches can be operated.

Glaskeramikplatten, die für Glaskeramik-Kochfelder verwendet werden sollen, müssen spezielle Festigkeitswerte besitzen. Neben einer naturgemäß verlangten Bruchfestigkeit muß auch eine Stoß- bzw. Schlagfestigkeit bestimmter Definition vorhanden sein. Um diese Forderungen erfüllen zu können, liefern die Hersteller von Glaskeramikplatten für Glaskeramik-Kochfelder im allgemeinen Platten mit an der Unterseite befindlichen Nop­ penstrukturen. Diese Noppenstrukturen erhöhen die Schlagfestigkeit und bewegen sich in Größenordnungen von 40 bis 200 µm. Wird nun kapazitive Sensortechnik auf Glaske­ ramik-Kochfeldern zum Schalten und Anzeigen von Funktionen verwendet, so hat sich herausgestellt, daß die kapazitiven Sensorschalter nicht auf die jeweilige Glaskeramik mit ihrer Noppenhöhe abgleichbar sind. Da zudem die Noppenhöhen zwischen 40 bis 200 µm schwanken können, wird häufig die Ansprechempfindlichkeit der kapazitiven Sensortechnik bis zur Funktionsuntüchtigkeit herabgesetzt. Um derartige Ansprechun­ empfindlichkeiten und Verzerrungen bei Sensortechnik und Anzeigen zu verhindern, wurde bisher beispielsweise im Anzeigebereich der Glaskeramik-Kochfläche Silikon auf die Unterseite aufgetragen, damit die Noppentäler und Noppen selbst als glatte Fläche ausgebildet werden können.Glass ceramic plates that are to be used for glass ceramic hobs must have special strength values. In addition to a naturally required breaking strength there must also be a shock or impact resistance of a certain definition. Around The manufacturers of glass ceramic plates supply these requirements Glass ceramic cooktops in general plates with nop on the underside pen structures. These knob structures increase the impact resistance and move in the order of 40 to 200 µm. Capacitive sensor technology is now on Glaske ceramic hobs for switching and displaying functions, so has emphasized that the capacitive sensor switches are not on the respective glass ceramic can be compared with their knob height. Since the nub heights between 40 to Can fluctuate 200 µm, is often the responsiveness of the capacitive Sensor technology reduced to inoperability. To such response to prevent sensitivities and distortions in sensor technology and displays, So far, for example, silicone was used in the display area of the glass ceramic cooktop applied the underside so that the dimpled valleys and dimples themselves as a smooth surface can be trained.

Die Aufgabe der Erfindung besteht darin, eine von dem Silikonverfahren abweichende kostengünstige weitere Maßnahme zu ermitteln, durch die eine schwankende Ansprech­ empfindlichkeit von kapazitiven Sensorschaltern in Glaskeramik-Kochfeldern behoben wird.The object of the invention is to deviate from the silicone process To determine cost-effective further measure by which a fluctuating response  Fixed sensitivity of capacitive sensor switches in glass ceramic cooktops becomes.

Die erfindungsgemäße Maßnahme zur Lösung dieser Aufgabenstellung ist dadurch ge­ kennzeichnet, daß im Bereich der kapazitiven Sensorschalter das Trägermaterial Glas­ keramik noppenlose Streifen aufweist. Vorteilhafte Ausgestaltungen der Erfindung sind in den Unteransprüchen enthalten.The inventive measure to solve this task is ge indicates that in the area of the capacitive sensor switches, the carrier material is glass ceramic has nubby stripes. Advantageous embodiments of the invention are contained in the subclaims.

Ein Ausführungsbeispiel nach der Erfindung ist im folgenden anhand der Zeichnung näher beschrieben.An embodiment according to the invention is in following described with reference to the drawing.

Es zeigt:It shows:

Fig. 1a, b) einen noppenlosen Randstreifen unterhalb des Glaskeramik-Kochfeldes, Fig. 1a, b) has a nub-free edge strips below the glass ceramic hob,

Fig. 2a, b) eine Variante gemäß Fig. 1a, b) FIG. 2a, b) a variant of FIG. 1a, b)

Fig. 3a, b) einen Querschnitt gemäß Fig. 2a, b) und Fig. 3a, b) a cross-section according to Fig. 2a, b) and

Fig. 4a, b) eine Variante gemäß Fig. 3a, b). Fig. 4a, b) a variant of Fig. 3a, b).

Gemäß den Fig. 1a) bis 4b) ist einheitlich als Bezugszeichen für 1 Glaskeramik mit Noppen an der Unterseite, für 2 Glaskeramik ohne Noppen an der Unterseite und für 3 die Ausbildung der Noppen gewählt. Gemäß der Fig. 1a, b) und 2a, b) ist ersichtlich, daß ein noppenloser Randstreifen in Variation vorhanden ist, um ein Glaskeramik-Kochfeld, das mit kapazitiver Sensortechnik bestückt ist, voll funktionsfähig mit kapaziti­ ven Sensorschaltern ausstatten zu können. Fig. 3a, b) zeigt zugehörige Querschnittsfi­ guren zu den Lösungen gemäß Fig. 1 und 2.According to FIGS. 1a) to 4b), the design of the knobs is chosen uniformly as a reference symbol for 1 glass ceramic with knobs on the underside, for 2 glass ceramics without knobs on the underside and for 3 . According to FIGS. 1a, b) and 2a, b) it can be seen that a knobless edge strip is available in variation in order to be able to equip a glass ceramic hob which is equipped with capacitive sensor technology in a fully functional manner with capacitive sensor switches. Fig. 3a, b) is associated Querschnittsfi guren to the solutions according to Fig. 1 and 2.

Wie den Schnittfiguren gemäß Fig. 3a, b) entnehmbar ist, befindet sich unterhalb der Glaskeramik-Kochfläche 1 eine auf der Glaskeramikfläche aufgebrachte Noppenstruk­ tur, wobei die Einzelnoppe 3 je nach Glaskeramik-Typ zwischen 40 und 200 µm hö­ henmäßig schwanken kann. Der noppenlose Rand 2 ist um die Noppenhöhe vermindert eingerückt und sichert damit gleichzeitig noch die Anzeigestreifenzone gegen untersei­ tiges Verkratzen, falls Anzeigentechnik in diesem Bereich unterhalb der Glaskeramik angeordnet ist. Aus Fig. 3a) ergibt sich zudem die Dicke des noppenlosen Anzeigestrei­ fens 2 zu d = D-NH, d. h., Gesamtdicke um die Noppenhöhe vermindert ergibt die Anzei­ gestreifen-Dicke.As can be seen from the sectional figures according to FIG. 3a, b), there is a knob structure applied to the glass ceramic cooking surface 1 , the individual knob 3 depending on the type of glass ceramic being able to vary in height between 40 and 200 μm. The dimpled edge 2 is indented by the dimple height and thus also secures the display strip zone against underside scratching, if display technology is arranged in this area below the glass ceramic. From Fig. 3a) also results in the thickness of the dimpled display strip 2 to d = DN H , ie, the total thickness reduced by the dimple height gives the striped strip thickness.

Die Schnittfiguren gemäß der Fig. 4a, b) zeigen eine Ausführungsform des noppenlosen Randstreifens 2 bezüglich seiner Materialstärke. Wie ersichtlich, ist die Dicke d des Randstreifens 2 gleich der Dicke D der Glaskeramikfläche 1, womit die Bruchfestigkeit erheblich erhöht wird. Die Möglichkeit, daß die Glaskeramikfläche im noppenlosen Randstreifen von unten her verkratzt wird, ist durch die unterbaute Technik gegenüber der Varianten gemäß Fig. 3a, b) erhöht.The sectional figures according to FIGS . 4a, b) show an embodiment of the knobless edge strip 2 with regard to its material thickness. As can be seen, the thickness d of the edge strip 2 is equal to the thickness D of the glass ceramic surface 1 , which considerably increases the breaking strength. The possibility that the glass ceramic surface in the dimpled edge strip is scratched from below is increased by the built-in technology compared to the variants according to FIGS . 3a, b).

Gegenüber dem Stand der Technik ist die erfindungsgemäße Lösung vorteilhaft, denn es ergibt sich durch die Einführung eines noppenlosen Randstreifens 2 im Bereich ka­ pazitiver Sensorschalter eine Kosteneinsparung, da der Arbeitsgang des unterseitigen Silikonauftragens entfällt. Die Silikonlösung hatte zudem öftere Ausfallraten bei Sensor­ technik ergeben, so daß Kundendienstaktivitäten anfielen, die durch die erfindungsge­ mäße Lösung einsparbar sind. Außerdem ergibt sich eine Verbesserung der Ansprech­ empfindlichkeit der kapazitiven Sensorschalter und eine einfachere Prüftechnik für Kochfelder mit Sensorschalter.Compared to the prior art, the solution according to the invention is advantageous, since the introduction of a knobless edge strip 2 in the area of capacitive sensor switches results in a cost saving since the operation of applying silicone on the underside is eliminated. The silicone solution had also resulted in frequent failure rates in sensor technology, so that customer service activities were incurred which can be saved by the solution according to the invention. In addition, there is an improvement in the response sensitivity of the capacitive sensor switches and a simpler test technology for hobs with a sensor switch.

Claims (3)

1. Glaskeramik-Kochfeld mit mindestens drei Strahlungsheizkörpern, die unter­ halb der Glaskeramik-Kochfläche angeordnet sind und mittels kapazitiver Sensorschalter bedienbar sind, dadurch gekennzeichnet, daß im Bereich der kapazitiven Sensorschalter das Trägermaterial Glaske­ ramik (1) auf der Unterseite noppenlose Streifen (2) aufweist.1. Glass ceramic cooktop with at least three radiant heaters, which are arranged below half of the glass ceramic cooktop and can be operated by means of capacitive sensor switches, characterized in that in the area of the capacitive sensor switch, the glass ceramic material ( 1 ) on the underside of nubby strips ( 2 ) having. 2. Glaskeramik-Kochfeld mit mindestens drei Strahlungsheizkörpern nach An­ spruch 1, dadurch gekennzeichnet, daß die noppenlose Zone (2) einen Randstreifen betrifft.2. Glass ceramic hob with at least three radiant heaters according to claim 1, characterized in that the knobless zone ( 2 ) relates to an edge strip. 3. Glaskeramik-Kochfeld mit mindestens drei Strahlungsheizkörpern nach An­ spruch 1, dadurch gekennzeichnet, daß die Materialdicke der noppenlosen Streifenzone (2) die um Noppenhöhe (3) verminderte Dicke der Glaskeramik-Kochfläche (1) ist.3. Glass ceramic cooktop with at least three radiant heaters according to claim 1, characterized in that the material thickness of the knobless strip zone ( 2 ) is the dimpled height ( 3 ) of the thickness of the glass ceramic hob ( 1 ).
DE1996133706 1996-08-21 1996-08-21 Glass ceramic cooktop with nub-free edge strips Expired - Fee Related DE19633706C2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE1996133706 DE19633706C2 (en) 1996-08-21 1996-08-21 Glass ceramic cooktop with nub-free edge strips

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1996133706 DE19633706C2 (en) 1996-08-21 1996-08-21 Glass ceramic cooktop with nub-free edge strips

Publications (2)

Publication Number Publication Date
DE19633706A1 true DE19633706A1 (en) 1998-02-26
DE19633706C2 DE19633706C2 (en) 2000-01-13

Family

ID=7803232

Family Applications (1)

Application Number Title Priority Date Filing Date
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Country Link
DE (1) DE19633706C2 (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19906963C1 (en) * 1999-02-19 2000-06-15 Schott Glas Glass ceramic plate, has knobbly structure on underside consisting of regular pattern of knobs with defined interval between them
WO2003086019A1 (en) * 2002-04-10 2003-10-16 Eurokera S.N.C. Glass-ceramic plates, method for making same and cooking surface equipped with same
FR2841970A1 (en) * 2002-07-03 2004-01-09 Eurokera VITROCERAMIC PLATE AND MANUFACTURING METHOD THEREOF
DE10344439B3 (en) * 2003-09-25 2005-02-10 Schott Ag Glass or glass/ceramic plate, for a cooking hob, is molded from molten glass with a raised edge, to be shaped into wide facings to take the operating controls and displays for the cooking zones
EP2690925A3 (en) * 2012-07-23 2014-09-03 BSH Bosch und Siemens Hausgeräte GmbH Hotplate device
DE102013102130A1 (en) * 2013-03-05 2014-09-11 Schott Ag Glass ceramic hob with knobbed structure
EP2771631B1 (en) 2011-10-26 2017-02-15 Arçelik Anonim Sirketi A cooling device comprising a rear wall having an outer surface produced from cellulosic material
EP3270660A1 (en) 2016-07-12 2018-01-17 Electrolux Appliances Aktiebolag Glass or glass-ceramic element and kitchen hob comprising such element
IT202100019442A1 (en) * 2021-07-22 2023-01-22 Ilva Glass S P A GLASS CERAMIC SLAB STRUCTURE

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015216634B4 (en) * 2015-08-31 2025-05-08 E.G.O. Elektro-Gerätebau GmbH Electrical device with a display device

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2790067A1 (en) * 1999-02-19 2000-08-25 Schott Glas VITROCERAMIC PLATE HAVING A BOSSED STRUCTURE ON ITS LOWER SIDE, AND METHOD FOR MANUFACTURING SUCH A PLATE
DE19906963C1 (en) * 1999-02-19 2000-06-15 Schott Glas Glass ceramic plate, has knobbly structure on underside consisting of regular pattern of knobs with defined interval between them
US7375307B2 (en) 2002-04-10 2008-05-20 Eurokera S.N.C. Glass-ceramic plates, method for making same and cooking surface equipped with same
WO2003086019A1 (en) * 2002-04-10 2003-10-16 Eurokera S.N.C. Glass-ceramic plates, method for making same and cooking surface equipped with same
FR2838507A1 (en) * 2002-04-10 2003-10-17 Eurokera VITROCERAMIC PLATES, THEIR MANUFACTURING PROCESS AND COOKING TABLES EQUIPPED WITH SUCH PLATES
US8216662B2 (en) 2002-07-03 2012-07-10 Eurokera S.N.C. Glass-ceramic plate and method for making same
WO2004008807A3 (en) * 2002-07-03 2004-04-08 Eurokera Glass-ceramic plate and method for making same
FR2841970A1 (en) * 2002-07-03 2004-01-09 Eurokera VITROCERAMIC PLATE AND MANUFACTURING METHOD THEREOF
DE10344439B3 (en) * 2003-09-25 2005-02-10 Schott Ag Glass or glass/ceramic plate, for a cooking hob, is molded from molten glass with a raised edge, to be shaped into wide facings to take the operating controls and displays for the cooking zones
EP2771631B1 (en) 2011-10-26 2017-02-15 Arçelik Anonim Sirketi A cooling device comprising a rear wall having an outer surface produced from cellulosic material
EP2690925A3 (en) * 2012-07-23 2014-09-03 BSH Bosch und Siemens Hausgeräte GmbH Hotplate device
DE102013102130A1 (en) * 2013-03-05 2014-09-11 Schott Ag Glass ceramic hob with knobbed structure
DE102013102130B4 (en) * 2013-03-05 2017-11-16 Schott Ag Glass ceramic hob with knobbed structure
US9927130B2 (en) 2013-03-05 2018-03-27 Schott Ag Glass ceramic cooktop with knob pattern
EP3270660A1 (en) 2016-07-12 2018-01-17 Electrolux Appliances Aktiebolag Glass or glass-ceramic element and kitchen hob comprising such element
WO2018010998A1 (en) 2016-07-12 2018-01-18 Electrolux Appliances Aktiebolag Glass or glass-ceramic element and kitchen hob comprising such element
IT202100019442A1 (en) * 2021-07-22 2023-01-22 Ilva Glass S P A GLASS CERAMIC SLAB STRUCTURE

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Publication number Publication date
DE19633706C2 (en) 2000-01-13

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Legal Events

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8110 Request for examination paragraph 44
8127 New person/name/address of the applicant

Owner name: BSH BOSCH UND SIEMENS HAUSGERAETE GMBH, 81669 MUEN

D2 Grant after examination
8363 Opposition against the patent
8365 Fully valid after opposition proceedings
8339 Ceased/non-payment of the annual fee