EP0438656B1 - Cooking plate - Google Patents
Cooking plate Download PDFInfo
- Publication number
- EP0438656B1 EP0438656B1 EP90122087A EP90122087A EP0438656B1 EP 0438656 B1 EP0438656 B1 EP 0438656B1 EP 90122087 A EP90122087 A EP 90122087A EP 90122087 A EP90122087 A EP 90122087A EP 0438656 B1 EP0438656 B1 EP 0438656B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- carrier
- cooking field
- field according
- luminous organ
- luminous
- 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.)
- Expired - Lifetime
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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
- H05B3/748—Resistive heating elements, i.e. heating elements exposed to the air, e.g. coil wire heater
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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
- H05B2213/00—Aspects relating both to resistive heating and to induction heating, covered by H05B3/00 and H05B6/00
- H05B2213/04—Heating plates with overheat protection means
Definitions
- the invention relates to a hob according to claim 1
- a device for the so-called residual heat indicator is provided in the form of a temperature-dependent switch which is used to control a light or signal element.
- a cooktop with a glass ceramic plate outside the shelf e.g. for a pot, under which shelf a radiant heater is located, is an essentially ring-shaped light guide at a distance to limit the space below the glass ceramic plate, which is also located outside the space.
- Light source is optically coupled.
- the invention is based, to improve the recognizability and assignment of the lighting elements in relation to the individual surfaces of the carrier and beyond the construction of the entire lighting device the task.
- the lighting element Due to the geometric inclusion of the lighting element in the associated footprint, an optimal recognizability and assignability of the lighting element in relation to the footprint is obtained and it is made clear to the user of the hob that just at the point where the lighting element is located and indicates an increased residual heat Avoid touching the hand as much as possible.
- the special arrangement and placement of the lighting element within the footprint prevents this lighting element from being damaged and destroyed as a result of the high thermal energy emanating from the heating element in the area within the footprint.
- the assigned footprint is optically identified by the lighting element and the exact placement of the cooking vessel on this footprint is facilitated, in particular when the lighting element directly identifies the outer periphery of the heated footprint.
- the luminous element is designed as an elongated light guide which is optically connected to a single light source.
- a light guide other lighting elements, such as incandescent or glow lamps, can also be provided, which are connected to a single electrical voltage source.
- this is the case with such a hob, eg glass ceramic hob already provided safety temperature limiter component used as an electrical connection element in that this component is provided in a simple manner in an additional electrical contact pair or serves as a carrier for a light source for the light guide.
- FIG. 1 shows a partially transparent support 1 made of glass ceramic material, on which cooking vessels can be placed for the purpose of heating.
- An infrared radiation heater 2 is arranged underneath the footprint of the hob, which is characterized by printing on the support 1, and consists in a manner known per se of a pot-shaped, metallic jacket, a thermal insulation 4 arranged therein and heating windings 5 carried by this insulation an electrical power network can be connected, as indicated in Fig. 2.
- FIGS. 1 and 2 two different variants of this embodiment are shown in FIGS. 1 and 2 to the left and right of the central plane in relation to the lighting device explained below (residual heat indicator).
- the wall of the aforementioned recess forms a reflector for the light coming from the glow lamp 8, which is thrown in the direction of the carrier 1 in a concentrated manner.
- an incandescent lamp 12 is provided instead of a glow lamp 8 as a luminous element with an incandescent filament or filament surrounded by a glass tube, which incandescent lamp 12 is also ring-shaped and also lies in the recess 7 of the insulating material carrier 4.
- the annular light-emitting element serves not only as a so-called residual heat indicator, that is to say for the optical display of the heating of the carrier 1 which exceeds a predetermined temperature which is permissible for contact, the control of this light-emitting element taking place in a manner known per se by means of a temperature-dependent switch, e.g. by means of a further path of the safety temperature limiter 9, but also represents an optical marking of the ring-shaped footprint of the hob.
- an electrically conductive metal strip 17 is provided as a luminous element for the residual heat indicator and for the identification of the footprint of the support 1, which is in the vertical wall 6 of the insulating material support 4 with a flush finish to the wall end and to the partially transparent support in Insulating material is embedded and in turn is electrically connected to contacts of the safety temperature limiter 9.
- the metal strip has consecutive points 18 with a constant spacing Cross-section and increased electrical resistance, at which points a glow and thus lighting effect occurs when an electrical voltage is applied. These cross-sectionally reduced locations 18 thus form line-shaped luminous surfaces along the metal strip 17.
- a luminous element which again surrounds the footprint of the support 1 in a ring, is formed by small glow lamps 19, which are embedded in corresponding, hole-shaped recesses 20 of the insulating material carrier 4 and protrude into the area in the area of upper, funnel-shaped recesses 21.
- This large number of small glow lamps 19 can be connected in series with one another to a power source, e.g. of the safety temperature limiter 9.
- the standing or heating surface of the hob of the glass-ceramic carrier is delimited by an annular marking 23 printed on the carrier 1, which is in a widened region 25 and / or in a region with a continuous width 24 has unprinted area 26, which preferably faces the operating front of the hob.
- the marking or the position print 23 is interrupted by an unprinted, circular point 27. Below the above-mentioned positions 26 and 27 there are again light elements in round or elongated form, as explained analogously above. Illuminated surfaces are thus created here, which are included in the position printing of the glass ceramic plate 1.
- the lighting element for example in the form of an elongated or round lamp, for example a glow lamp
- the sensor 10 of which in turn radially overlaps the footprint extends.
- the luminous element denoted for example by 8, for example in the form of a glow lamp, is mounted on the top of the safety temperature limiter module 9, for example with a reflector as the base, as shown in FIG. 10.
- the safety temperature limiter 9 has a contact 28 of a temperature-dependent switch, or a second control path of the safety temperature limiter, which is adjusted according to the requirements of the "residual heat indicator" function for the control of the lighting element 8.
- the contact 29 assigned to the “safety temperature limiter” function is indicated.
- the lighting element is included in the position marking 23 with the width a.
- a light guide 30 or 30 ′ is provided as the signal element, which extends radially from the outside of the footprint to the center of the footprint.
- the light guide is arranged above the heating windings 5 of the radiant heater 2 directly below the carrier 1. Outside the jacket 3 of the radiant heater 2, it has an opening 31 for introducing a light emitter in the form of a lamp 32 and in the center a circular, enlarged, and with a reflection corrugation corresponding to FIG. 18, large luminous surface 33 and in the course of the light guide 30 several successive ones Reflection notches or reflection recesses 34. As shown in FIG.
- this light guide is located in an at least largely unheated area above the heating windings 5, namely where the reversal points of the heating windings are located.
- the lamp 32 is in electrical connection with the safety temperature limiter 9.
- a light guide 30 ' can also be provided below the radiant heater 2, which is also connected to a lamp and extends to the center of the footprint.
- the pot-shaped jacket 3 has an opening 35 formed by a through-hole, through which the light field, again formed in the center, is optically recognizable from above the support when the residual heat indicator signals an excess temperature.
- the luminous element of the residual heat indicator is structurally connected to the sensor 10 of the safety temperature limiter 9, which sensor 10 extends radially over the footprint of the glass-ceramic carrier 1.
- the sensor 10 of the safety temperature limiter 9 is formed by a glass tube 36, in which there is an expansion rod 37 in a known manner, which, in order to protect the glass ceramic carrier 1, senses its temperature and, when reaching unsafe temperatures, appropriate switching measures in the safety temperature limiter 9 causes.
- the sensor 10 is surrounded by a further, transparent glass protective tube 38, a light-emitting element in the form of an elongated filament or band 39 being arranged in the cavity between the two glass tubes 36 and 38, for example, applied to the outer surface of the inner glass tube 36, as shown in FIG. 16 is.
- This glow wire or the glow band 39 is preferably larger in cross section on the side facing the carrier 1 than below the glass tube 36 in the region of the return line of the electrical conductor. As illustrated in FIG. 2, the filament 39 can also be wound onto the inner glass tube 36. This glow wire is in turn electrically connected to contacts of the safety temperature limiter.
- a band-like light guide 40 is arranged parallel to the sensor 10 of the safety temperature limiter 9 and e.g. appropriately mechanically coupled to the sensor 10.
- This light guide in turn has light-reflecting corrugations 41 or the like along its longitudinal extent and is in turn in optical connection with a lamp 32 which is held in the safety temperature limiter 9 and is electrically connected.
Abstract
Description
Die Erfindung bezieht sich auf ein Kochfeld gemäß Patentanspruch 1The invention relates to a hob according to claim 1
Bei bekannten Kochfeldern, z.B. gemäß DE-PS 29 51 410, ist eine Einrichtung für die sogenannte Restwärmeanzeige vorgesehen in Form eines temperaturabhängigen Schalters, der zur Steuerung eines Leucht- oder Signalorgans dient. Gemäß einem unter Artikel 54 (3) EPÜ fallenden Dokument (EP-A-0 359 028) ist bei einem Kochfeld mit Glaskeramikplatte außerhalb der Stellfläche, z.B. für einen Topf, unter welcher Stellfläche ein Strahlungsheizkkörper angeordnet ist, ein im wesentlichen ringförmiger Lichtleiter mit Abstand zur Stellflächenbegrenzung unterhalb der Glaskeramikplatte vorgesehen, der an eine ebenfalls außerhalb der Stellfläche angeordnete. Lichtquelle optisch angekoppelt ist.In known hobs, for example according to DE-PS 29 51 410, a device for the so-called residual heat indicator is provided in the form of a temperature-dependent switch which is used to control a light or signal element. According to a document falling under Article 54 (3) EPC (EP-A-0 359 028), a cooktop with a glass ceramic plate outside the shelf, e.g. for a pot, under which shelf a radiant heater is located, is an essentially ring-shaped light guide at a distance to limit the space below the glass ceramic plate, which is also located outside the space. Light source is optically coupled.
Der Erfindung liegt die Aufgabe zugrunde, bei einem Kochfeld die Erkennbarkeit und Zuordnung der Leuchtorgane in Beziehung zu den einzelnen Stellflächen des Trägers und darüber hinaus die Konstruktion der gesamten Leuchteinrichtung zu verbessern.The invention is based, to improve the recognizability and assignment of the lighting elements in relation to the individual surfaces of the carrier and beyond the construction of the entire lighting device the task.
Diese Aufgabe wird gelöst durch die im Patentanspruch 1 angegebenen Maßnahmen. Vorteilhafte Ausgestaltungen der Erfindung ergeben sich aus den nachfolgenden Patentansprüchen.This object is achieved by the measures specified in claim 1. Advantageous embodiments of the invention result from the following patent claims.
Durch die geometrische Einbeziehung des Leuchtorganes in die zugehörige Stellfläche wird eine optimale Erkennbarkeit und Zuordenbarkeit des Leuchtorgans in Beziehung zur Stellfläche erhalten und es wird dem Benutzer des Kochfeldes verdeutlicht, daß eben an der Stelle, wo sich das Leuchtorgan befindet und eine erhöhte Restwärme anzeigt, eine Berührung mit der Hand tunlichst unterlassen werden soll. Hierbei wird durch die besondere Anordnung und Plazierung des Leuchtorganes innerhalb der Stellfläche verhindert, daß dieses Leuchtorgan infolge der vom Heizelement im Bereich innerhalb der Stellfläche ausgehenden hohen Wärmeenergie Schaden erleidet und zerstört wird. Gleichzeitig wird durch das Leuchtorgan die zugeordnete Stellfläche optisch gekennzeichnet und die exakte Plazierung des Kochgefäßes auf dieser Stellfläche erleichtert, insbesondere dann, wenn das Leuchtorgan unmittelbar die äußere Peripherie der beheizten Stellfläche kennzeichnet. Dabei kann vorgesehen sein, daß das Leuchtorgan als langgestreckter Lichtleiter ausgebildet ist, der an eine einzige Lichtquelle optisch angeschlossen ist. Anstelle eines Lichtleiters können aber auch sonstige Leuchtorgane, wie Glüh- oder Glimmlampen vorgesehen sein, die an eine einzige elektrische Spannungsquelle angeschlossen sind. In vorteilhafter Weise wird hierbei das bei einem derartigen Kochfeld, z.B. Glaskeramik-Kochfeld bereits vorgesehene Sicherheits-Temperaturbegrenzer-Bauelement als elektrisches Anschlußelement herangezogen, indem dieses Bauelement in einfacher Weise in einem zusätzlichen elektrischen Kontaktpaar versehen ist oder aber als Träger für eine Lichtquelle für den Lichtleiter dient.Due to the geometric inclusion of the lighting element in the associated footprint, an optimal recognizability and assignability of the lighting element in relation to the footprint is obtained and it is made clear to the user of the hob that just at the point where the lighting element is located and indicates an increased residual heat Avoid touching the hand as much as possible. Here, the special arrangement and placement of the lighting element within the footprint prevents this lighting element from being damaged and destroyed as a result of the high thermal energy emanating from the heating element in the area within the footprint. At the same time, the assigned footprint is optically identified by the lighting element and the exact placement of the cooking vessel on this footprint is facilitated, in particular when the lighting element directly identifies the outer periphery of the heated footprint. It can be provided that the luminous element is designed as an elongated light guide which is optically connected to a single light source. Instead of a light guide, other lighting elements, such as incandescent or glow lamps, can also be provided, which are connected to a single electrical voltage source. In an advantageous manner, this is the case with such a hob, eg glass ceramic hob already provided safety temperature limiter component used as an electrical connection element in that this component is provided in a simple manner in an additional electrical contact pair or serves as a carrier for a light source for the light guide.
Die Erfindung ist anhand von in der Zeichnung dargestellten Ausführungsbeispielen nachstehend erläutert.The invention is explained below with reference to exemplary embodiments shown in the drawing.
Es zeigt
- Fig. 1 und 2
- ein erstes Ausführungsbeispiel eines Glaskeramik-Kochfeldes in Schnittansicht und Draufsicht,
- Fig. 3 und 4
- ein zweites Ausführungsbeispiel eines Glaskeramik-Kochfeldes mit einem Lichtleiter als Leuchtorgan,
- Fig. 5
- der Lichtleiter gemäß Fig. 3 und 4 als Einzelheit,
- Fig. 6 und 7
- ein drittes Ausführungsbeispiel des Glaskeramik-Kochfeldes in Schnittansicht unter Verwendung von Glimmlampen,
- Fig. 8 und 9
- ein viertes Ausführungsbeispiel eines Kochfeldes in Draufsicht (Fig. 8) und mit Alternativ-Ausführung als Einzelheit (Fig. 9)
- Fig. 10 und 11
- eine Schnittansicht und Draufsicht auf weitere Einzelheiten der Anordnung gemäß Fig. 8 und/oder 9,
- Fig. 12 und 13
- ein fünftes Ausführungsbeispiel eines Glaskeramik-Kochfeldes in Schnittansicht und Draufsicht mit radial angeordnetem Lichtleiter als Leuchtorgan,
- Fig. 14
- ein sechstes Ausführungsbeispiel eines Glaskeramik-Kochfeldes in Draufsicht mit Anordnung des Leuchtorgans im Fühler des Sicherheitstemperaturbegrenzers,
- Fig. 15
- eine Schnittdarstellung der Anordnung gemäß Fig. 14,
- Fig. 16 und 17
- unterschiedliche Varianten hinsichtlich der Anordnung des Leuchtorgans in Verbindung mit dem Fühler eines Sicherheitstemperaturbegrenzers,
- Fig. 18 und 19
- eine siebtes Ausführungsform eines Glaskeramik-Kochfeldes in zwei unterschiedlichen Schnittansichten unter Verwendung eines Lichtleiters als Leuchtorgan.
- 1 and 2
- a first embodiment of a glass ceramic cooktop in a sectional view and top view,
- 3 and 4
- 2 shows a second exemplary embodiment of a glass ceramic cooktop with a light guide as the luminous element,
- Fig. 5
- 3 and 4 as a detail,
- 6 and 7
- A third embodiment of the glass ceramic hob in a sectional view using glow lamps,
- 8 and 9
- a fourth embodiment of a hob in plan view (Fig. 8) and with an alternative embodiment as a detail (Fig. 9)
- 10 and 11
- 8 shows a sectional view and top view of further details of the arrangement according to FIGS. 8 and / or 9,
- 12 and 13
- 5 shows a fifth exemplary embodiment of a glass ceramic cooktop in a sectional view and plan view with a radially arranged light guide as a luminous element,
- Fig. 14
- 6 shows a sixth exemplary embodiment of a glass ceramic cooktop in a top view with arrangement of the lighting element in the sensor of the safety temperature limiter,
- Fig. 15
- 14 shows a sectional illustration of the arrangement according to FIG. 14,
- 16 and 17
- different variants with regard to the arrangement of the lighting element in connection with the sensor of a safety temperature limiter,
- 18 and 19
- a seventh embodiment of a glass ceramic cooktop in two different sectional views using a light guide as a luminous element.
Figur 1 zeigt einen zum Teil transparenten Träger 1 aus Glaskeramikmaterial, auf den Kochgefäße zum Zwecke der Erhitzung aufstellbar sind. Unterhalb der durch eine Bedruckung des Trägers 1 gekennzeichneten Stellfläche des Kochfeldes ist eine Infrarot-Strahlungsheizung 2 angeordnet, die in an sich bekannter Weise aus einem topfförmigen, metallischen Mantel, einer darin angeordneten thermischen Isolierung 4 und von dieser Isolierung getragenen Heizwicklungen 5 besteht, die an ein elektrisches Stromnetz anschließbar sind, wie in Fig. 2 angedeutet. Wie durch entgegengesetzte Pfeile in Fig. 1 verdeutlicht, sind in den Fig. 1 und 2 links und rechts der Mittelebene zwei unterschiedliche Varianten dieser Ausführungsform in bezug auf die nachstehend erläuterte Leuchteinrichtung (Restwärmeanzeige) gezeigt. Beim Ausführungsbeispiel in Richtung X ist in der senkrechten, ringförmig umlaufenden Wand 6 des topfförmigen Isolierstoffträgers 4 eine ebenfalls umlaufende, zum Träger 1 hin offene Ausnehmung 7 eingearbeitet, in welcher eine ringförmige, das Leuchtorgan darstellende Glimmlampe 8 angeordnet ist. Hierbei bildet die Wandung der vorgenannten Ausnehmung einen Reflektor für das von der Glimmlampe 8 ausgehende Licht, das konzentriert in Richtung des Trägers 1 geworfen wird. Fig. 2 zeigt, daß die Enden dieser Glimmlampen im Bereich von elektrischen Anschlußstellen 8a und 8b radial nach außen abgebogen sind und dort an ein elektrisches Anschlußelement angeschlossen sind, z.B. an einen an sich bekannten elektrischen Sicherheitstemperaturbegrenzer 9, der ohnehin bei derartigen Glaskeramik-Kochfeldern vorhanden ist und dessen Schaltteil mit einem, z.B. einen Ausdehnungsstab aufweisenden ummantelten Fühler 10 verbunden ist, welcher Fühler 10 sich radial über die Strahlungsheizung 2 unterhalb des Trägers 1 erstreckt. Hierzu ist der Sicherheitstemperaturbegrenzer 9 mit zusätzlichen Kontakten ausgestattet. Bei der in Richtung Y gezeigten Variante ist statt einer Glimmlampe 8 als Leuchtorgan eine Glühlampe 12 vorgesehen mit einer von einer Glasröhre umgebenen Glühwendel oder Glühdraht, welche Glühlampe 12 ebenfalls ringförmig ausgebildet ist und ebenfalls in der Ausnehmung 7 des Isolierstoffträgers 4 liegt.FIG. 1 shows a partially transparent support 1 made of glass ceramic material, on which cooking vessels can be placed for the purpose of heating. An
Bei diesen Ausführungsbeispielen dient das ringförmige Leuchtorgan nicht nur als sogenannte Restwäremanzeige, also zur optischen Anzeige der eine vorbestimmte, für eine Berührung zulässige Temperatur übersteigende Erwärmung des Trägers 1, wobei in an sich bekannter Weise die Steuerung dieses Leuchtorgans mittels eines temperaturabhängigen Schalters erfolgt, z.B. mittels einer weiteren Bahn des Sicherheitstemperaturbegrenzers 9, sondern stellt auch eine optische Markierung der ringförmigen Stellfläche des Kochfeldes dar.In these exemplary embodiments, the annular light-emitting element serves not only as a so-called residual heat indicator, that is to say for the optical display of the heating of the carrier 1 which exceeds a predetermined temperature which is permissible for contact, the control of this light-emitting element taking place in a manner known per se by means of a temperature-dependent switch, e.g. by means of a further path of the
Beim Ausführungsbeispiel gemäß den Fig. 3 bis 5 ist als Leuchtorgan für die Restwärmeanzeige sowie für die Kennzeichnung der Stellfläche des Trägers 1 ein elektrisch leitendes Metallband 17 vorgesehen, das in der senkrechten Wand 6 des Isolierstoffträgers 4 mit bündigem Abschluß zum Wandende und zum teiltransparenten Träger im Isoliermaterial eingebettet ist und wiederum an Kontakte des Sicherheitstemperaturbegrenzers 9 elektrisch angeschlossen ist. Wie insb. Fig. 5 zeigt, besitzt das Metallband mit gleichbleibendem Abstand aufeinander folgende Stellen 18 verminderten Querschnitts und erhöhten elektrischen Widerstandes, an welchen Stellen beim Anlegen einer elektrischen Spannung eine Glüh- und damit Leuchtwirkung auftritt. Diese querschnittsverminderten Stellen 18 bilden damit strichförmige Leuchtflächen entlang des Metallbandes 17.In the embodiment according to FIGS. 3 to 5, an electrically
Beim Ausführungsbeispiel gemäß den Fig. 6 und 7 wird ein wiederum ringförmig die Stellfläche des Trägers 1 umziehendes Leuchtorgan gebildet durch Kleinglimmlampen 19, die in entsprechenden, lochförmigen Ausnehmungen 20 des Isolierstoffträgers 4 eingebettet sind und im Bereich von oberen, trichterförmigen Ausnehmungen 21 ins Freie ragen. Diese Vielzahl von Kleinglimmlampen 19 können über im Isolierstoffträger 4 verlaufende, elektrische Leitungen 22 in Reihe zueinander wiederum an eine Stromquelle, z.B. des Sicherheitstemperaturbegrenzers 9, angeschlossen sein.In the exemplary embodiment according to FIGS. 6 and 7, a luminous element, which again surrounds the footprint of the support 1 in a ring, is formed by
Beim Ausführungsbeispiel gemäß Fig. 8 und 9 wird die Stell- oder Heizfläche des Kochfeldes des glaskeramischen Trägers begrenzt durch eine ringförmige, auf den Träger 1 aufgedruckte Markierung 23, die in einem verbreiterten Bereich 25 und/-oder in einem Bereich mit kontinuierlicher Breite 24 eine unbedruckte Stelle 26 besitzt, die vorzugsweise der Bedienfront des Kochfeldes zugewandt ist. Bei der Alternative gemäß Fig. 9 ist die Markierung bzw. der Positionsdruck 23 durch eine unbedruckte, kreisförmige Stelle 27 unterbrochen. Unterhalb den vorerwähnten Stellen 26 bzw. 27 befinden sich wiederum Leuchtorgane in runder oder langgestreckter Form, wie analog vorstehend erläutert. Somit sind hier Leuchtflächen geschaffen, die in den Positionsdruck der Glaskeramikplatte 1 mit einbezogen sind.In the exemplary embodiment according to FIGS. 8 and 9, the standing or heating surface of the hob of the glass-ceramic carrier is delimited by an
In Fig. 10 und 11 sind im wesentlichen die schaltungstechnischen und anordnungsmäßigen Maßnahmen für die Ausführungsform gemäß Fig. 8 und 9 gezeigt. Verdeutlicht ist hier, daß das Leuchtorgan, z.B. in Form einer langgestreckten oder runden Lampe, z.B. Glimmlampe, in den Sicherheitstemperaturbegrenzer 9 mechanisch und elektrisch mit einbezogen ist, dessen Fühler 10 sich wiederum radial über die Stellfläche erstreckt. Das z.B. mit 8 bezeichnete Leuchtorgan, z.B. in Form einer Glimmlampe, ist an der Oberseite des Sicherheitstemperaturbegrenzer-Bausteines 9 gelagert, z.B. mit einem Reflektor als Basis, wie Fig. 10 zeigt. Der Sicherheitstemperaturbegrenzer 9 besitzt für die Steuerung des Leuchtorganes 8 einen Kontakt 28 eines temperaturabhängigen Schalters, bzw. einer zweiten Regelbahn des Sicherheitstemperaturbegrenzers, der entsprechend den Erfordernissen der Funktion "Restwärmeanzeige" justiert ist. Im Bereich des Leuchtorganes 8 ist angedeutet der, der Funktion "Sicherheitstemperaturbegrenzer" zugeordnete Kontakt 29. Wie schon anhand der Fig. 8 und 9 erläutert, ist hierbei das Leuchtorgan einbezogen in die Positionsmarkierung 23 mit der Breite a.10 and 11 essentially show the circuitry and arrangement measures for the embodiment according to FIGS. 8 and 9. It is made clear here that the lighting element, for example in the form of an elongated or round lamp, for example a glow lamp, is mechanically and electrically included in the
Beim Ausführungsbeispiel gemäß den Fig. 12 und 13 ist als Signalorgan ein Lichtleiter 30 bzw. 30' vorgesehen, der sich radial von der Außenseite der Stellfläche bis zum Zentrum der Stellfläche erstreckt. Bei der ersten Variante ist der Lichtleiter oberhalb der Heizwicklungen 5 der Strahlungsheizung 2 direkt unterhalb des Trägers 1 angeordnet. Er besitzt außerhalb des Mantels 3 der Strahlungsheizung 2 eine Öffnung 31 zum Einbringen eines Lichtgebers in Form einer Lampe 32 und im Zentrum eine kreisrunde, vergrößerte und mit einer Reflexionsriffelung entsprechend Fig. 18 versehene große Leuchtfläche 33 sowie im Verlauf des Lichtleiters 30 mehrere, aufeinander folgende Reflexionskerben oder Reflexionsausnehmungen 34. Dieser Lichtleiter befindet sich, wie Fig. 13 zeigt, in einem zumindest weitgehend unbeheizten Bereich oberhalb der Heizwicklungen 5, nämlich dort, wo sich die Umkehrstellen der Heizwicklungen befinden. Auch hier steht die Lampe 32 in elektrischer Schaltverbindung mit dem Sicherheitstemperaturbegrenzer 9. Alternativ kann auch unterhalb der Strahlungsheizung 2 ein Lichtleiter 30' vorgesehen sein, der ebenfalls an eine Lampe angeschlossen ist und sich bis zum Zentrum der Stellfläche erstreckt. An dieser Stelle weist der topfförmige Mantel 3 eine von einer Durchziehung gebildete Öffnung 35 auf, durch welche hindurch das wiederum im Zentrum gebildete Leuchtfeld von oberhalb des Trägers her optisch erkennbar ist, wenn die Restwärmeanzeige eine Übertemperatur signalisiert.In the exemplary embodiment according to FIGS. 12 and 13, a
Bei den Ausführungsbeispielen gemäß den Fig. 14 bis 19 ist das Leuchtorgan der Restwärmeanzeige konstruktiv verbunden mit dem Fühler 10 des Sicherheitstemperaturbegrenzers 9, welcher Fühler 10 sich radial über die Stellfläche des glaskeramischen Trägers 1 erstreckt. Wie aus Fig. 15 erkennbar, wird der Fühler 10 des Sicherheitstemperaturbegrenzers 9 gebildet durch ein Glasrohr 36, in dem sich in bekannter Weise ein Ausdehnungsstab 37 befindet, der zum Schutze des Glaskeramikträgers 1 dessen Temperatur abfühlt und bei Erreichen von bedenklichen Temperaturen entsprechende Schaltmaßnahmen im Sicherheitstemperaturbegrenzer 9 veranlaßt. Der Fühler 10 ist umgeben von einem weiteren, transparenten Glas-Schutzrohr 38, wobei gemäß Fig. 16 im Hohlraum zwischen den beiden Glasröhren 36 und 38 ein Leuchtorgan in Form eines langgestreckten Glühdrahtes oder Glühbandes 39 angeordnet, z.B. auf die Außenfläche des inneren Glasrohres 36 aufgebracht ist. Vorzugsweise ist dieser Glühdraht oder das Glühband 39 an der, dem Träger 1 zugewandten Seite im Querschnitt größer als unterhalb des Glasrohres 36 im Bereich der Rückleitung des elektrischen Leiters. Wie anhand Fig. 2 verdeutlicht, kann der Glühdraht 39 auch auf das innere Glasrohr 36 aufgewickelt sein. Dieser Glühdraht ist wiederum an Kontakte des Sicherheitstemperaturbegrenzers elektrisch angeschlossen.In the exemplary embodiments according to FIGS. 14 to 19, the luminous element of the residual heat indicator is structurally connected to the
Beim Ausführungsbeispiel gemäß Fig. 18 und 19 ist oberhalb des Fühlers 10 des Sicherheitstemperaturbegrenzers 9 ein bandartiger Lichtleiter 40 parallel zu diesem angeordnet und z.B. in geeigneter Weise mit dem Fühler 10 mechanisch gekoppelt. Dieser Lichtleiter weist wiederum entlang seiner Längsausdehnung lichtreflektierende Riffelungen 41 oder dergleichen auf und steht wiederum in optischer Verbindung mit einer im Sicherheitstemperaturbegrenzer 9 gehalterten und elektrisch angeschlossenen Lampe 32.In the embodiment according to FIGS. 18 and 19, a band-like
Claims (13)
- Cooking field with an at least partially transparent carrier of glass or glass ceramic, with radiant heaters (2) arranged thereunder in the region of placing surfaces of the carrier and with a luminous equipment for the optical indication of a heating, which exceeds a predetermined temperature permissible for touching, of the carrier by means of a temperature-dependent switch, which is thermally coupled to the carrier, and a luminous organ controlled by this switch, wherein the luminous organ (8, 17, 19, 30, 40) is arranged in the region of the radiant heater (2) at an at least largely unheated place within or in the periphery of the placing surface.
- Cooking field according to claim 1, characterised thereby, that the luminous organ is borne in one or more recesses (7), which are open towards the carrier, of a pot-shaped insulating material carrier (4), preferably in its wall (6) which carries the heating element (5).
- Cooking field according to one of the preceding claims, characterised thereby, that the luminous organ (8) is included in a marking (23), which identifies the periphery of the placing surface, of the carrier (1), preferably at an interruption (26, 27) of the marking.
- Cooking field according to claim 1, characterised thereby, that the luminous organ is arranged in the heating-coil-free centre of the placing surface.
- Cooking field according to claim 1, characterised thereby, that the optical conductor (30) is arranged in the region between a radiant heating element (5) and the carrier (1) at the height of a heating-coil-free zone of the radiant heating element (5) or underneath the radiant heating element.
- Cooking field according to claim 1 or 5, characterised thereby, that the cooking field is passed through, preferably radially, by a rod-like temperature sensor (10), which lies in a protective tube (36) of a safety temperature limiter (9) and that the luminous organ is arranged along this temperature sensor in the region between this and the carrier (1).
- Cooking field according to claim 6, characterised thereby, that the protective tube (36) of the temperature sensor (10) is surrounded by a further transparent protective tube (38) and that the luminous organ in the form of an elongate incandescent wire or incandescent tape (39) or in the form of an incandescent coil wound onto the inner protective tube (36) is arranged between the protective tubes at the side facing the carrier (1).
- Cooking field according to one of the preceding claims, characterised thereby, that an elongate optical conductor (40) is provided as luminous organ.
- Cooking field according to one of the preceding claims, characterised thereby, that the preferably multitrack safety temperature limiter (9) is provided as carrier element and electrical connecting element for the light transmitter of the optical conductor or for another luminous organ.
- Cooking field according to one of the preceding claims, characterised thereby, that the luminous organ is formed by a number of electrical incandescent or glow lamps (19) placed at a spacing one to the other in a row.
- Cooking field according to one of the claims 1 to 9, characterised thereby, that the luminous organ is formed by a metal tape (17), which is connected to a current source, preferably a low-voltage current source, and comprises places (18), which follow one another at a spacing and represent luminous surfaces, of reduced cross-section and increased electrical resistance.
- Cooking field according to one of the claims 1 to 9, characterised thereby, that the luminous organ is formed by an elongate electrical lamp (8, 12).
- Cooking field according to one of the claims 1 to 9, characterised thereby, that the luminous organ is formed by an elongate or helically wound incandescent wire (39), which is arranged in a transparent protective tube (38) and connected to a current source, preferably a low-voltage current source.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE4002322A DE4002322A1 (en) | 1990-01-26 | 1990-01-26 | COOKING AREA |
| DE4002322 | 1990-01-26 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP0438656A2 EP0438656A2 (en) | 1991-07-31 |
| EP0438656A3 EP0438656A3 (en) | 1992-04-15 |
| EP0438656B1 true EP0438656B1 (en) | 1996-01-24 |
Family
ID=6398859
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP90122087A Expired - Lifetime EP0438656B1 (en) | 1990-01-26 | 1990-11-19 | Cooking plate |
Country Status (6)
| Country | Link |
|---|---|
| US (2) | US5138135A (en) |
| EP (1) | EP0438656B1 (en) |
| JP (1) | JPH04212317A (en) |
| AT (1) | ATE133530T1 (en) |
| DE (2) | DE4002322A1 (en) |
| ES (1) | ES2084634T3 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102006027739A1 (en) * | 2006-06-16 | 2007-12-20 | Schott Ag | Hob with a glass ceramic plate as a hob |
| EP3603337B1 (en) * | 2017-03-28 | 2023-10-25 | BSH Hausgeräte GmbH | Cooking device and method for producing a cooking device |
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| GB2249386B (en) * | 1990-10-22 | 1994-03-30 | Moorwood Vulcan Ltd | Cooker hobs |
| EP0540876B1 (en) * | 1991-11-07 | 1997-12-03 | BOSCH-SIEMENS HAUSGERÄTE GmbH | Cooking hob |
| DE4139508C2 (en) * | 1991-11-07 | 2000-03-16 | Bsh Bosch Siemens Hausgeraete | Cooktop |
| US5658478A (en) * | 1994-05-03 | 1997-08-19 | Roeschel; Hans E. | Automatic heating assembly with selective heating |
| US5640947A (en) * | 1995-02-15 | 1997-06-24 | Shute; Alan B. | Counter-top cooking unit using natural stone |
| GB2301760B (en) * | 1995-06-01 | 1999-09-22 | Ceramaspeed Ltd | Electric heater |
| DE19651859C1 (en) * | 1996-12-13 | 1997-12-04 | Schott Glaswerke | Light conductor fixing device for cooking zone indication or residual heat display |
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| DE19906737A1 (en) | 1999-02-18 | 2000-09-14 | Schott Glas | Glass ceramic plate as a cooking surface with at least one cooking zone and method for displaying a cooking zone display |
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| NZ336874A (en) * | 1999-07-22 | 2001-08-31 | Fisher & Paykel | Element status indicator for a ceramic cook top |
| US6140617A (en) * | 1999-10-22 | 2000-10-31 | General Electric Company | Cooktop control and monitoring system including detecting properties of a utensil through a solid-surface cooktop |
| DE10004446B4 (en) * | 2000-02-03 | 2004-05-06 | E.G.O. Elektro-Gerätebau GmbH | Lighting device for a heating device |
| US6281481B1 (en) * | 2000-02-18 | 2001-08-28 | General Electric Company | Glass-ceramic cooktop burner assembly having an optical sensor |
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| JP3769462B2 (en) * | 2000-12-08 | 2006-04-26 | 株式会社東芝 | Cooker |
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| US20040112887A1 (en) * | 2001-02-21 | 2004-06-17 | Lerner William S. | Method of warning individuals about hot surfaces on stoves including cooktops |
| DE20217528U1 (en) * | 2002-11-07 | 2003-02-20 | Ego Elektro Geraetebau Gmbh | Display device with lighting devices for a household electric heating device |
| US20070204849A1 (en) * | 2006-02-09 | 2007-09-06 | Johnson Edward T Jr | Ring of fire |
| US7554060B2 (en) | 2006-09-29 | 2009-06-30 | England Raymond O | Displaying cooking-related information |
| US20100108053A1 (en) * | 2007-01-23 | 2010-05-06 | Lg Electronics Inc. | Heating cooking appliance |
| US20080173296A1 (en) * | 2007-01-23 | 2008-07-24 | Dae Rae Lee | Heating cooker and method of controlling the same |
| ES2336743B1 (en) * | 2008-02-04 | 2011-02-10 | Bsh Electrodomesticos España S.A. | DOMESTIC APPARATUS WITH A MARK AND WITH A LIGHTING PROVISION. |
| EP2381177B1 (en) * | 2010-04-24 | 2019-02-13 | Electrolux Home Products Corporation N.V. | A cooking hob with illumination equipment |
| FR2967236B1 (en) * | 2010-11-04 | 2014-10-10 | Eurokera | LUMINOUS VITROCERAMIC ARTICLE |
| US8667958B2 (en) | 2010-11-29 | 2014-03-11 | General Electric Company | Burner illumination in an appliance |
| US20120138590A1 (en) * | 2010-12-04 | 2012-06-07 | Brosnan Daniel V | Lighting system for use with a cooktop appliance and method for assembling the same |
| US20130146582A1 (en) * | 2011-12-09 | 2013-06-13 | E.G.O. Elektro-Gerätebau GmbH | Heating Device, Cooking Field and Method for Operating a Heating Device |
| US8933377B2 (en) | 2011-12-09 | 2015-01-13 | E.G.O. Elektro-Gerätebau GmbH | Control device for an electrical heating device for a cooking field, cooking field and method for operating such an electrical heating device |
| US8884195B2 (en) | 2011-12-09 | 2014-11-11 | E.G.O. Elektro-Gerätebau GmbH | Heating device, method of producing a heating device and method for operating a heating device |
| DE102011088077A1 (en) * | 2011-12-09 | 2013-06-13 | BSH Bosch und Siemens Hausgeräte GmbH | Gas hob |
| DE102012203460A1 (en) * | 2012-03-05 | 2013-09-05 | E.G.O. Elektro-Gerätebau GmbH | hob |
| DE202013103165U1 (en) | 2013-07-16 | 2013-09-24 | Schott Ag | Cooking device with lighting elements |
| ES2880299T3 (en) | 2013-07-16 | 2021-11-24 | Schott Ag | Cooking appliance with lighting elements |
| FR3008780B1 (en) | 2013-07-16 | 2018-03-02 | Schott Ag | COOKING APPARATUS COMPRISING LUMINOUS ELEMENTS |
| DE102014215781A1 (en) * | 2014-08-08 | 2016-02-11 | BSH Hausgeräte GmbH | Hob with a lighting device with specific light guide |
| US20160227609A1 (en) * | 2015-01-30 | 2016-08-04 | Schott Corporation | Multi function glass or glass-ceramic cooktop system and method of cooking thereon |
| DE102015207569A1 (en) | 2015-04-24 | 2016-10-27 | Schott Ag | Glass or glass ceramic articles |
| DE102015208195B4 (en) * | 2015-05-04 | 2023-12-14 | BSH Hausgeräte GmbH | Hob with at least one semiconductor light source and a light diffuser |
| 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 |
| US10314427B2 (en) | 2015-07-27 | 2019-06-11 | Whirlpool Corporation | Light guide for generating illuminated indicia for an electric burner of a heating appliance |
| USD787041S1 (en) | 2015-09-17 | 2017-05-16 | Whirlpool Corporation | Gas burner |
| US10837651B2 (en) | 2015-09-24 | 2020-11-17 | Whirlpool Corporation | Oven cavity connector for operating power accessory trays for cooking appliance |
| DE102015222719B4 (en) * | 2015-11-18 | 2019-03-28 | E.G.O. Elektro-Gerätebau GmbH | Hob with display |
| US11777190B2 (en) | 2015-12-29 | 2023-10-03 | Whirlpool Corporation | Appliance including an antenna using a portion of appliance as a ground plane |
| US10145568B2 (en) | 2016-06-27 | 2018-12-04 | Whirlpool Corporation | High efficiency high power inner flame burner |
| US10551056B2 (en) | 2017-02-23 | 2020-02-04 | Whirlpool Corporation | Burner base |
| US10660162B2 (en) | 2017-03-16 | 2020-05-19 | Whirlpool Corporation | Power delivery system for an induction cooktop with multi-output inverters |
| ES2694656A1 (en) * | 2017-06-22 | 2018-12-26 | BSH Electrodomésticos España S.A. | Component of domestic appliance. (Machine-translation by Google Translate, not legally binding) |
| US10627116B2 (en) | 2018-06-26 | 2020-04-21 | Whirlpool Corporation | Ventilation system for cooking appliance |
| US10619862B2 (en) | 2018-06-28 | 2020-04-14 | Whirlpool Corporation | Frontal cooling towers for a ventilation system of a cooking appliance |
| US10837652B2 (en) | 2018-07-18 | 2020-11-17 | Whirlpool Corporation | Appliance secondary door |
| CN109386853B (en) * | 2018-07-26 | 2020-03-24 | 浙江绍兴苏泊尔生活电器有限公司 | Induction cooker and pot cover state detection method and control method thereof |
| CN111035271B (en) * | 2019-12-11 | 2021-06-29 | 广东美的厨房电器制造有限公司 | Baking tray assembly, cooking equipment, cooking control method and storage medium |
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| DE3840360A1 (en) * | 1988-11-30 | 1990-05-31 | Ego Elektro Blanc & Fischer | RADIATION RADIATOR |
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-
1990
- 1990-01-26 DE DE4002322A patent/DE4002322A1/en not_active Withdrawn
- 1990-11-19 EP EP90122087A patent/EP0438656B1/en not_active Expired - Lifetime
- 1990-11-19 AT AT90122087T patent/ATE133530T1/en not_active IP Right Cessation
- 1990-11-19 DE DE59010089T patent/DE59010089D1/en not_active Expired - Fee Related
- 1990-11-19 ES ES90122087T patent/ES2084634T3/en not_active Expired - Lifetime
-
1991
- 1991-01-22 JP JP3022775A patent/JPH04212317A/en active Pending
- 1991-01-28 US US07/647,711 patent/US5138135A/en not_active Expired - Lifetime
-
1993
- 1993-03-15 US US08/032,522 patent/US5448036A/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102006027739A1 (en) * | 2006-06-16 | 2007-12-20 | Schott Ag | Hob with a glass ceramic plate as a hob |
| DE102006027739B4 (en) * | 2006-06-16 | 2008-05-29 | Schott Ag | Hob with a glass ceramic plate as a cooking surface |
| EP3603337B1 (en) * | 2017-03-28 | 2023-10-25 | BSH Hausgeräte GmbH | Cooking device and method for producing a cooking device |
Also Published As
| Publication number | Publication date |
|---|---|
| ES2084634T3 (en) | 1996-05-16 |
| DE4002322A1 (en) | 1991-08-01 |
| US5138135A (en) | 1992-08-11 |
| ATE133530T1 (en) | 1996-02-15 |
| JPH04212317A (en) | 1992-08-03 |
| US5448036A (en) | 1995-09-05 |
| EP0438656A2 (en) | 1991-07-31 |
| EP0438656A3 (en) | 1992-04-15 |
| DE59010089D1 (en) | 1996-03-07 |
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