EP0005486B1 - Cooking appliance with a vitreous-ceramics cooking plate - Google Patents

Cooking appliance with a vitreous-ceramics cooking plate Download PDF

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Publication number
EP0005486B1
EP0005486B1 EP79101364A EP79101364A EP0005486B1 EP 0005486 B1 EP0005486 B1 EP 0005486B1 EP 79101364 A EP79101364 A EP 79101364A EP 79101364 A EP79101364 A EP 79101364A EP 0005486 B1 EP0005486 B1 EP 0005486B1
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EP
European Patent Office
Prior art keywords
cover plate
heating units
hob according
glass ceramic
leaf springs
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
Application number
EP79101364A
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German (de)
French (fr)
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EP0005486A1 (en
Inventor
Gerhard Dipl.-Ing. Gössler
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.)
EGO Elektro Geratebau GmbH
Original Assignee
EGO Elektro Gerate Blanc und Fischer 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.)
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Publication date
Application filed by EGO Elektro Gerate Blanc und Fischer GmbH filed Critical EGO Elektro Gerate Blanc und Fischer GmbH
Priority to AT79101364T priority Critical patent/ATE126T1/en
Publication of EP0005486A1 publication Critical patent/EP0005486A1/en
Application granted granted Critical
Publication of EP0005486B1 publication Critical patent/EP0005486B1/en
Expired legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C15/00—Details
    • F24C15/10—Tops, e.g. hot plates; Rings
    • F24C15/108—Mounting of hot plate on worktop
    • 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 invention relates to a hob according to the preamble of claim 1.
  • a built-in hob with a glass ceramic hotplate has already become known, in which a lower cover plate forms the support both for the glass ceramic plate and for the heating units .
  • the heating units are pressed against the glass ceramic plate by compression springs, which are guided on pins which are attached to the bottom of the cover plate.
  • the compression springs press against rags protruding laterally from the cover plate.
  • the glass ceramic plate is enclosed in a circumferential frame and can be removed independently of the cover plate.
  • the object of the invention is to provide a hob of the type mentioned, which manages with a minimum of manufacturing and assembly work and allows safe and uncomplicated guidance and centering of the cooking units with easy repair options.
  • the cover plate also represents the support for the heating units.
  • the formations simultaneously form a centering for the heating units against lateral movement and stiffen the cover plate, which can be provided with a raised edge and can rest on the worktop with a flange.
  • the leaf spring elements can easily be attached to the cover plate from the outside and protrude through the recesses, so that the heating units can be inserted into the recesses from above. They do not need to be "threaded” laboriously, but a rotation of the heating units automatically locks the leaf springs into the guide recesses, so that the leaf springs also have a guiding and centering function in addition to their spring function.
  • the heating unit also maintains a relatively constant distance in the circumferential direction from the protrusions of the cover plate in addition to a lower distance, so that an insulation distance is established.
  • the advantageously short and essentially straight leaf spring elements can be screwed flat onto the part of the cover plate lying between the formations.
  • the heating units project essentially into the formations by the depth of the guide recesses.
  • the heating units preferably have multiple guide recesses as the leaf spring element, there is a relatively large possibility of adaptation in the arrangement of the heating elements in the circumferential direction.
  • the leaf spring elements can preferably have a projection, e.g. in the form of a riveted pin or the like, which engages in a hole on the heating unit for additional centering.
  • the heating units can preferably contain radiant heaters.
  • the design and arrangement of the hob according to the invention is particularly suitable for radiant heaters which are appropriately fixed and insulated with a certain distance in the interior of the flat circular sheet metal shells forming the jacket of the heating units.
  • the invention is also particularly suitable for cooktops which are built into a worktop, because it makes it possible to produce a stable and transportable unit with a plurality of hotplates which, with good thermal insulation, manages to the side and downwards with a minimum installation height.
  • the glass-ceramic plate provided with a frame can be removably attached in the cover plate, which is fastened separately in a work table cutout, and in which the outer edge is screwed onto threaded nuts fastened to the outside of the cover plate.
  • These can preferably be welded to the underside of a flange of the cover plate resting on the work table. This particularly simple arrangement makes it possible to lift off the glass ceramic plate together with the frame surrounding it, so that the heating units are exposed for assembly and repair.
  • a hob 11 which has a cover plate 12, which has the shape of a square flat, upwardly open bowl with a bottom 13 and an upwardly facing edge 14 with an outwardly directed flange 15 on the upper edge.
  • the cover plate is made from a deformed piece of sheet metal and has four cooking points for the cooking hob shown in the drawing with four cooking areas 16 directed downwards relative to the base 13.
  • each formation 16 Regularly distributed over the circumference of each formation 16, three openings 17 are provided in the region of the lower bottom edge of the formation, into which leaf spring elements 18 project.
  • the leaf spring elements 18 are short, essentially straight strips of spring material, which in the area of their inwardly facing free end have upward angled portions 20, so that they are U-shaped in this area, and in the area of their outer end by means of self-tapping screws 19 'are screwed to the bottom 13 of the cover plate from the outside.
  • a bend 20 at its end engages in a slot in the cover plate and thus ensures its essentially radial alignment with respect to the formations.
  • the hotplates are formed by heating units 22. These are preferably radiant heating units which are not shown in detail here and which can be designed, for example, according to DE-A-2551 137. They can have an insulation inserted into an outer shell in the form of a circular flat bowl and radiation heaters fixed thereon in the form of spirals or the like. The insulation 23 projects somewhat beyond the upper edge of the sheet metal bowl and lies against the underside of a glass ceramic plate 24, which forms the cooking surface of the hob with its upper side.
  • the heating unit i.e. their outer jacket formed as a sheet metal shell, guide recesses 25, which are designed as partial indentations of the edge.
  • guide recesses 25 are provided on each heating unit at regular intervals.
  • the leaf spring elements 18 engage with their free end in three of these guide recesses and press the heating unit 22 upward against the glass ceramic plate.
  • the heating unit 22 extends into the formations 16.
  • the guide recesses 25 are so long in the radial direction that they can cooperate with the free ends of the leaf spring elements for centering the heating elements in the middle of the formations. This and a corresponding choice of the depth of the formations creates a lateral and lower insulation gap around each heating unit, into which insulating material can also be inserted if necessary.
  • the glass ceramic plate 24 is fastened by means of a cement 26 in a frame 27 made of thin stainless steel, which has a circumferential, outwardly facing edge which lies approximately at the height of the glass ceramic plate and which rests on the peripheral flange 15, while a downward-pointing part of the frame 27 is fixed leads within the edge 14 of the cover plate.
  • An inwardly facing circumferential leg 28 of the frame carries the glass ceramic plate.
  • the frame 27 is attached to the cover plate 12 by screws 29 (screwed out for clarity), which extend through four holes in the four corners of the frame and the flange 15 and are screwed there into threaded nuts 30 which are welded to the flange 15 from below are.
  • the hob 11 is arranged in a cutout 31 of a worktop 32 of kitchen furniture, lies in the example shown with the flange 15 on the top of the worktop 32 and is fixed by a clamping device 33 which can be pressed onto the underside of the worktop with a gripping claw.
  • the threaded nuts 30 lie in the area of blind holes in the worktop in the four corners.
  • Fig. 3 a variant is shown in which the leaf spring element 18 'is formed flat and without bends in the rest of the same embodiment. It is guided in upwardly pronounced recesses 36 in the cover plate and has at its inner free end a projection 35 designed as a riveted pin, which can engage in a hole in the region of the guide recesses 25.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Electric Stoves And Ranges (AREA)
  • Cookers (AREA)
  • Resistance Heating (AREA)
  • Baking, Grill, Roasting (AREA)

Abstract

1. Hob with a glass ceramic plate (24) forming the cooking surface and dish-shaped heating units resiliently pressed against the same and arranged in a shaped cover plate (12), the glass ceramic plate upwardly terminating the sheet metal cover, characterized in that the cover plate (12) has a corresponding shaped portion (16) for each individual heating unit (22) provided at at least three points on its edge area with openings (17) via which the leaf springs (18) located on the outside of cover plate (12) project into the shaped portions (16) and engage in corresponding guide depressions (25) in the vicinity of the lower edge of the heating units (22), pressing the latter upwards and centring them.

Description

Die Erfindung bezieht sich auf eine Kochmulde nach dem Oberbegriff des Anspruchs 1. Aus dem DE-U-7718 108 ist bereits eine Einbaukochmulde mit einer Glaskeramik-Kochplatte bekanntgeworden, bei der ein unteres Abdeckblech den Träger sowohl für die Glaskeramikplatte als auch für die Heizeinheiten bildet. Die Heizeinheiten werden durch Druckfedern an die Glaskeramikplatte gedrückt, die auf Zapfen geführt sind, die am Boden des Abdeckblechs befestigt sind. Die Druckfedern drücken gegen seitlich aus dem Abdeckblech hervorstehende Lappen.The invention relates to a hob according to the preamble of claim 1. From DE-U-7718 108 a built-in hob with a glass ceramic hotplate has already become known, in which a lower cover plate forms the support both for the glass ceramic plate and for the heating units . The heating units are pressed against the glass ceramic plate by compression springs, which are guided on pins which are attached to the bottom of the cover plate. The compression springs press against rags protruding laterally from the cover plate.

Die Glaskeramikplatte ist in einem umlaufenden Rahmen gefaßt und unabhängig von dem Abdeckblech abnehmbar.The glass ceramic plate is enclosed in a circumferential frame and can be removed independently of the cover plate.

Es ist ferner aus der DE-A-23 40 818 bekanntgeworden, Heizeinheiten mittels Blattfedern federnd gegen eine Glaskeramikplatte zu drücken. Dort ist jedoch ein kreuzförmiger Tragrahmen vorgesehen, von dem die Blattfedern ausgehen und der die Kontaktheizkörper aufwärts drückt. Dieser Rahmen ist schwierig herzustellen und stellt ein zusätzlich zu montierendes Bauteil dar.It has also become known from DE-A-23 40 818 to press heating units resiliently against a glass ceramic plate by means of leaf springs. There, however, a cross-shaped support frame is provided, from which the leaf springs extend and which presses the contact heating element upwards. This frame is difficult to manufacture and is an additional component to be assembled.

Aufgabe der Erfindung ist es, eine Kochmulde der eingangs erwähnten Art zu schaffen, die mit einem Minimum an Herstellungs- und Montageaufwand auskommt und eine sichere und unkomplizierte Führung und Zentrierung der Kocheinheiten mit leichter Reparaturmöglichkeit gestattet.The object of the invention is to provide a hob of the type mentioned, which manages with a minimum of manufacturing and assembly work and allows safe and uncomplicated guidance and centering of the cooking units with easy repair options.

Diese Aufgabe wird gemäß der Erfindung durch das Kennzeichen des Anspruchs 1 gelöst.This object is achieved according to the invention by the characterizing part of claim 1.

Bei der Erfindung stellt das Abdeckblech gleichzeitig den Träger für die Heizeinheiten dar. Die Ausformungen bilden gleichzeitig eine Zentrierung für die Heizeinheiten gegen seitliche Bewegung und eine Versteifung des Abdeckblechs, das mit einem hochgezogenen Rand versehen sein kann und mit einem Flansch auf der Arbeitsplatte aufliegen kann. Es ist jedoch auch möglich, es durch Spreizelemente, die in die Stirnflächen des Ausschnittes in der Arbeitsplatte greifen, festzulegen. Die Blattfederelemente können auf einfache Weise von außen am Abdeckblech angebracht sein und ragen durch die Ausnehmungen hinein, so daß die Heizeinheiten von oben in die Ausnehmungen hineingelegt werden können. Dabei brauchen sie nicht mühsam «eingefädelt• zu werden, sondern eine Drehung der Heizeinheiten läßt die Blattfedern automatisch in die Führungsvertiefungen einrasten, so daß die Blattfedern außer ihrer Federfunktion auch noch eine Führungs- und Zentrierungsfunktion haben. Dies gilt insbesondere dann, wenn vorteilhafterweise die Blattfederelemente sich mit ihren freien Enden an den inneren Begrenzungen der Führungsvertiefungen führen. Dann kann sichergestellt werden, daß die Heizeinheit außer einem unteren Abstand auch noch einen relativ konstanten Abstand in Umfangsrichtung von den Ausformungen des Abdeckblechs einhält, so daß ein Isolationsabstand hergestellt ist.In the invention, the cover plate also represents the support for the heating units. The formations simultaneously form a centering for the heating units against lateral movement and stiffen the cover plate, which can be provided with a raised edge and can rest on the worktop with a flange. However, it is also possible to fix it by spreading elements which engage in the end faces of the cutout in the worktop. The leaf spring elements can easily be attached to the cover plate from the outside and protrude through the recesses, so that the heating units can be inserted into the recesses from above. They do not need to be "threaded" laboriously, but a rotation of the heating units automatically locks the leaf springs into the guide recesses, so that the leaf springs also have a guiding and centering function in addition to their spring function. This applies in particular when the leaf spring elements advantageously lead with their free ends to the inner boundaries of the guide recesses. Then it can be ensured that the heating unit also maintains a relatively constant distance in the circumferential direction from the protrusions of the cover plate in addition to a lower distance, so that an insulation distance is established.

Die vorteilhaft kurzen und im wesentlichen geraden Blattfederelemente können an dem zwischen den Ausformungen liegenden Teil des Abdeckblechs flach angeschraubt sein. In diesem Falle ragen die Heizeinheiten im wesentlichen um die Tiefe der Führungsvertiefungen in die Ausformungen hinein.The advantageously short and essentially straight leaf spring elements can be screwed flat onto the part of the cover plate lying between the formations. In this case, the heating units project essentially into the formations by the depth of the guide recesses.

Wenn vorzugsweise die Heizeinheiten ein mehrfaches von Führungsvertiefungen aufweisen als Blattfederelementes vorgesehen sind, so besteht eine relativ große Anpassungsmöglichkeit in der Anordnung der Heizelemente in Umfangsrichtung.If the heating units preferably have multiple guide recesses as the leaf spring element, there is a relatively large possibility of adaptation in the arrangement of the heating elements in the circumferential direction.

Die Blattfederelemente können vorzugsweise im Bereich ihres inneren Endes einen Vorsprung, z.B. in Form eines angenieteten Stiftes o. dgl., haben, der zur zusätzlichen Zentrierung in ein Loch an der Heizeinheit eingreift.The leaf spring elements can preferably have a projection, e.g. in the form of a riveted pin or the like, which engages in a hole on the heating unit for additional centering.

Die Heizeinheiten können vorzugsweise Strahlungsheizkörper enthalten. Die erfindungsgemäße Ausbildung und Anordnung der Kochmulde eignet sich in besonderem Maße für Strahlungsheizkörper, die entsprechend festgelegt und isoliert mit einem gewissen Abstand im Inneren der den Mantel der Heizeinheiten bildenden flachen kreisrunden Blechschalen liegen. Die Erfindung ist auch besonders für Kochmulden geeignet, die in eine Arbeitsplatte eingebaut werden, weil sie es ermöglicht, eine stabile und in sich transportable Einheit mit mehreren Kochstellen herzustellen, die bei guter Wärmeisolation zur Seite und nach unten mit einer minimalen Einbauhöhe auskommt. Es ist jedoch auch möglich, eine entsprechende Bauweise bei anderen Kochgeräten, Herden o. dgl. vorzusehen.The heating units can preferably contain radiant heaters. The design and arrangement of the hob according to the invention is particularly suitable for radiant heaters which are appropriately fixed and insulated with a certain distance in the interior of the flat circular sheet metal shells forming the jacket of the heating units. The invention is also particularly suitable for cooktops which are built into a worktop, because it makes it possible to produce a stable and transportable unit with a plurality of hotplates which, with good thermal insulation, manages to the side and downwards with a minimum installation height. However, it is also possible to provide a corresponding design for other cooking appliances, stoves or the like.

Bei einer bevorzugten Ausführungsform der Erfindung kann die mit einem Rahmen versehene Glaskeramikplatte abnehmbar in dem gesondert in einem Arbeitstisch-Ausschnitt befestigten Abdeckblech angebracht sein, in dem der äußere Rand mittels Schrauben an am Äußeren des Abdeckblechs befestigten Gewindemuttern angeschraubt ist. Diese können vorzugsweise an der Unterseite eines auf dem Arbeitstisch aufliegenden Flansches des Abdeckblechs angeschweißt sein. Diese besonders einfache Anordnung erlaubt es, die Glaskeramikplatte samt dem sie umgebenden Rahmen abzuheben, so daß die Heizeinheiten zur Montage und zur Reparatur freiliegen. Trotzdem ist es aber möglich, auch die gesamte Kochmulde einschließlich der Glaskeramikplatte herauszuheben, was insbesondere von Vorteil ist, wenn die Kochmulde auch die zugehörigen Regler und Schalter enthält, da sie dann unter Umständen mit einem Stecker am Haushaltsnetz angeschlossen sein kann und zur Reparatur einfach durch Ziehen des Netzsteckers und Herausheben der Kochmulde entnommen werden kann.In a preferred embodiment of the invention, the glass-ceramic plate provided with a frame can be removably attached in the cover plate, which is fastened separately in a work table cutout, and in which the outer edge is screwed onto threaded nuts fastened to the outside of the cover plate. These can preferably be welded to the underside of a flange of the cover plate resting on the work table. This particularly simple arrangement makes it possible to lift off the glass ceramic plate together with the frame surrounding it, so that the heating units are exposed for assembly and repair. Nevertheless, it is also possible to lift out the entire hob, including the glass ceramic plate, which is particularly advantageous if the hob also contains the associated controls and switches, since it can then be connected to the household network with a plug and can be easily repaired Pull out the mains plug and lift out the hob.

Weitere Vorteile und Merkmale ergeben sich aus der Beschreibung im Zusammenhang mit den Zeichnungen. Ausführungsbeispiele der Erfindung sind In der beigefügten Zeichnung dargestellt und werden Im folgenden näher .erläutert. Es zeigen:

  • Fig. 1 ein Teil einer Unter-Ansicht einer Kochmulde nach der Erfindung mit teilweise aufgebrochenem Abdeckblech,
  • Fig. 2 einen Schnitt nach der Linie 11-11 in Fig. 1,
  • Fig, 3 einen Schnitt entspr. Fig. 2 durch eine Variante.
Further advantages and features emerge from the description in connection with the Drawings. Embodiments of the invention are shown in the accompanying drawing and are explained in more detail below. Show it:
  • 1 is a part of a bottom view of a hob according to the invention with a partially broken cover plate,
  • 2 shows a section along the line 11-11 in Fig. 1,
  • 3 shows a section corresponding to FIG. 2 through a variant.

In der Zeichnung ist eine Kochmulde 11 dargestellt, die ein Abdeckblech 12 aufweist, das die Form einer viereckigen flachen, nach oben offenen Schüssel mit einem Boden 13 und einem nach oben weisenden Rand 14 mit einem nach außen gerichteten Flansch 15 an der oberen Kante hat. Das Abdeckblech ist aus einem verformten Blechstück hergestellt und besitzt für die in der Zeichnung dargestellte Kochmulde mir vier Kochstellen gegenüber dem Boden 13 nach unten gerichtete kreisrunde Ausformungen 16.In the drawing, a hob 11 is shown, which has a cover plate 12, which has the shape of a square flat, upwardly open bowl with a bottom 13 and an upwardly facing edge 14 with an outwardly directed flange 15 on the upper edge. The cover plate is made from a deformed piece of sheet metal and has four cooking points for the cooking hob shown in the drawing with four cooking areas 16 directed downwards relative to the base 13.

Regelmäßig über den Umfang jeder Ausformung 16 verteilt sind drei Durchbrüche 17 im Bereich der unteren Bodenkante der Ausformung vorgesehen, in die Blattfederelemente 18 hindurchragen. Die Blattfederelemente 18 sind kurze, im wesentlichen gerade Streifen aus Federmaterial, die im Bereich ihres nach innen weisenden freien Endes nach oben weisende Abwinklungen 20 haben, so daß sie in diesem Bereich U-förmig ausgebildet sind, und die im Bereich ihres äußeren Endes mittels Blechschrauben 19' an dem Boden 13 des Abdeckblechs von außen angeschraubt sind. Eine Abwinklung 20 an ihrem Ende greift in einen Schlitz im Abdeckblech ein und sichert so ihre im wesentlichen radiale Ausrichtung in Bezug auf die Ausformungen.Regularly distributed over the circumference of each formation 16, three openings 17 are provided in the region of the lower bottom edge of the formation, into which leaf spring elements 18 project. The leaf spring elements 18 are short, essentially straight strips of spring material, which in the area of their inwardly facing free end have upward angled portions 20, so that they are U-shaped in this area, and in the area of their outer end by means of self-tapping screws 19 'are screwed to the bottom 13 of the cover plate from the outside. A bend 20 at its end engages in a slot in the cover plate and thus ensures its essentially radial alignment with respect to the formations.

Eine um die Ausformung herum umlaufende, nach oben gerichtete und nach unten offene Rinne 21 versteift das Abdeckblech und sorgt für einen ungehinderten Federweg für das Blattfederelement 18.A groove 21 running around the formation, directed upwards and open downwards stiffens the cover plate and ensures unimpeded spring travel for the leaf spring element 18.

Die Kochstellen werden von Heizeinheiten 22 gebildet. Dabei handelt es sich vorzugsweise um Strahlungs-Heizeinheiten, die hier nicht im einzelnen dargestellt sind und die beispielsweise nach der DE-A-2551 137 ausgebildet sein können. Sie können eine in eine äußere in Form einer kreisrunden flachen Schüssel ausgebildeten Schale eingelegte Isolierung und darauf festgelegte Strahlungs-Heizkörper in Form von Spiralen o. dgl. aufweisen. Die Isolierung 23 überragt etwas den oberen Rand der Blechschüssel und liegt an der Unterseite einer Glaskeramikplatte 24 an, die mit ihrer Oberseite die Kochfläche der Kochmulde bildet.The hotplates are formed by heating units 22. These are preferably radiant heating units which are not shown in detail here and which can be designed, for example, according to DE-A-2551 137. They can have an insulation inserted into an outer shell in the form of a circular flat bowl and radiation heaters fixed thereon in the form of spirals or the like. The insulation 23 projects somewhat beyond the upper edge of the sheet metal bowl and lies against the underside of a glass ceramic plate 24, which forms the cooking surface of the hob with its upper side.

Im Bereich des äußeren unteren Randes besitzt die Heizeinheit, d.h. ihr äußerer als Blechschale ausgebildeter Mantel, Führungsvertiefungen 25, die als partielle Einstülpungen des Randes ausgebildet sind. Insgesamt sind in regelmäßigem Abstand sechs derartige Führungsvertiefungen an jeder Heizeinheit vorgesehen. In drei dieser Führungsvertiefungen greifen die Blattfederelemente 18 mit ihrem freien Ende ein und drücken die Heizeinheit 22 nach oben gegen die Glaskeramikplatte. Dabei reicht die Heizeinheit 22 in die Ausformungen 16 hinein. Die Führungsvertiefungen 25 sind in radialer Richtung so lang, daß sie mit den freien Enden der Blattfederelemente zur Zentrierung der Heizelemente in der Mitte der Ausformungen zusammenwirken können. Dadurch und durch entsprechende Wahl der Tiefe der Ausformungen entsteht eine seitlicher und unterer Isolationsspalt um jede Heizeinheit herum, in den erforderlichenfalls auch noch Isoliermaterial eingelegt werden kann.In the area of the outer lower edge, the heating unit, i.e. their outer jacket formed as a sheet metal shell, guide recesses 25, which are designed as partial indentations of the edge. In total, six such guide recesses are provided on each heating unit at regular intervals. The leaf spring elements 18 engage with their free end in three of these guide recesses and press the heating unit 22 upward against the glass ceramic plate. The heating unit 22 extends into the formations 16. The guide recesses 25 are so long in the radial direction that they can cooperate with the free ends of the leaf spring elements for centering the heating elements in the middle of the formations. This and a corresponding choice of the depth of the formations creates a lateral and lower insulation gap around each heating unit, into which insulating material can also be inserted if necessary.

Die Glaskeramikplatte 24 ist durch eine Kittung 26 in einem aus dünnen rostfreiem Stahl hergestellten Rahmen 27 befestigt, der einen in etwa in Höhe der Glaskeramikplatte liegenden umlaufenden nach außen weisenden Rand besitzt, der auf dem Umfangsflansch 15 aufliegt, während ein abwärtsweisender Teil des Rahmens 27 sich innerhalb des Randes 14 des Abdeckbleches führt. Ein nach innen weisender umlaufender Schenkel 28 des Rahmens trägt die Glaskeramikplatte.The glass ceramic plate 24 is fastened by means of a cement 26 in a frame 27 made of thin stainless steel, which has a circumferential, outwardly facing edge which lies approximately at the height of the glass ceramic plate and which rests on the peripheral flange 15, while a downward-pointing part of the frame 27 is fixed leads within the edge 14 of the cover plate. An inwardly facing circumferential leg 28 of the frame carries the glass ceramic plate.

Der Rahmen 27 ist an der Abdeckplatte 12 durch Schrauben 29 (der Deutlichkeit halber herausgeschraubt gezeichnet) befestigt, die durch vier Löcher in den vier Ecken des Rahmens und des Flansches 15 hindurchgreifen und dort in Gewindemuttern 30 eingeschraubt sind, die von unten am Flansch 15 angeschweißt sind.The frame 27 is attached to the cover plate 12 by screws 29 (screwed out for clarity), which extend through four holes in the four corners of the frame and the flange 15 and are screwed there into threaded nuts 30 which are welded to the flange 15 from below are.

Die Kochmulde 11 ist in einem Ausschnitt 31 einer Arbeitsplatte 32 eines Küchenmöbels angeordnet, liegt im dargestellten Beispiel mit dem Flansch 15 auf der Oberseite der Arbeitsplatte 32 und ist durch eine Spannvorrichtung 33, die mit einer Greifkralle an die Unterseite der Arbeitsplatte anpreßbar ist, festgelegt. Die Gewindemuttern 30 liegen im Bereich von Sackbohrungen der Arbeitsplatte in den vier Ecken.The hob 11 is arranged in a cutout 31 of a worktop 32 of kitchen furniture, lies in the example shown with the flange 15 on the top of the worktop 32 and is fixed by a clamping device 33 which can be pressed onto the underside of the worktop with a gripping claw. The threaded nuts 30 lie in the area of blind holes in the worktop in the four corners.

Es ist zu erkennen, daß hier eine besonders flache und gut versteifte Kochmulde geschaffen wurde, die besonders leicht zu montieren und zu reparieren ist. Durch Lösen der Schrauben 29 kann die Glaskeramikplatte abgenommen werden, und die vier Heizeinheiten liegen zum Austausch oder zur Wartung frei. Um die Heizkörper herum ist ein relativ großer freier Raum vorhanden, in dem eventuelle (in der Zeichnung strichliert dargestellte) Regler oder Temperaturbegrenzer 34 angeordnet sein können und die Zuleitungen 38 sowie Verteilerdosen 39 liegen können. - Von dort aus sind die Anschlüsse 37 leicht an die Heizeinheiten heranzuführen und anzuschließen. Im mittleren Bereich ist eine tüllenförmige nach seitwärts führende Ausnehmung vorgesehen, durch die die zusammengefaßten Anschlußkabel seitlich nach unten herausgeführt sind.It can be seen that a particularly flat and well-stiffened hob was created here, which is particularly easy to assemble and repair. By loosening the screws 29, the glass ceramic plate can be removed and the four heating units are exposed for replacement or maintenance. Around the radiators there is a relatively large free space in which any regulators or temperature limiters 34 (shown in dashed lines in the drawing) can be arranged and the supply lines 38 and distribution boxes 39 can be located. - From there, the connections 37 can easily be brought up to the heating units and connected. In the middle area a grommet-shaped, laterally leading recess is provided, through which the combined connecting cables are led out laterally downwards.

In Fig. 3 ist eine Variante gezeigt, bei der bei im übrigen gleicher Ausführung das Blattfederelement 18' flach und ohne Abwinklungen ausgebildet ist. Es ist in nach oben ausgeprägten Vertiefungen 36 in dem Abdeckblech geführt und besitzt an seinem inneren freien Ende einen als angenieteter Stift ausgebildeten Vorsprung 35, der in ein Loch im Bereich der Führungsvertiefungen 25 eingreifen kann.In Fig. 3 a variant is shown in which the leaf spring element 18 'is formed flat and without bends in the rest of the same embodiment. It is guided in upwardly pronounced recesses 36 in the cover plate and has at its inner free end a projection 35 designed as a riveted pin, which can engage in a hole in the region of the guide recesses 25.

Claims (8)

1. Hob with a glass ceramic plate (24) forming the cooking surface and dish-shaped heating units resiliently pressed against the same and arranged in a shaped cover plate (12), the glass ceramic plate upwardly terminating the sheet metal cover, characterized in that the cover plate (12) has a corresponding shaped portion (16) for each individual heating unit (22) provided at at least three points on its edge area with openings (17) via which the leaf springs (18) located on the outside of cover plate (12) project into the shaped portions (16) and engage in corresponding guide depressions (25) in the vicinity of the lower edge of the heating units (22), pressing the latter upwards and centring them.
2. Hob according to claim 1, characterized in that the free ends of the leaf springs (18) are guided on the inner boundaries of the guide depressions (25).
_ 3. Hob according to claims 1 or 2, characterized in that the leaf springs (18) are screwed flat to that part of cover plate (12) located between the shaped portions (16).
4. Hob according to one of the preceding claims, characterized in that the heating units (22) have a multiple of guide depressions (25) as leaf springs (18).
5. Hob according to one of the preceding claims, characterized in that in the vicinity of their inner end, the leaf springs have a projection (35) engaging in a hole in the heating unit (22).
6. Hob according to one of the preceding claims, characterized in that the heating units (22) contain radiant elements.
7. Hob according to one of the preceding claims, characterized in that the glass ceramic plate (24) provided with a frame (27) is removably fitted in the cover plate (12) separately fixed in a worktable cutout (31), the outer edge being screwed by means of screws (29) to nuts (30) fixed to the outside of cover plate (12).
8. Hob according to claim 7, characterized in that the nuts (30) are welded to the bottom of a flange (15) of cover plate (12) placed on worktable (32).
EP79101364A 1978-05-11 1979-05-04 Cooking appliance with a vitreous-ceramics cooking plate Expired EP0005486B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT79101364T ATE126T1 (en) 1978-05-11 1979-05-04 HOB WITH A CERAMIC GLASS PLATE FORMING THE COOKING SURFACE.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19787814217U DE7814217U1 (en) 1978-05-11 1978-05-11 HOB WITH A CERAMIC GLASS PLATE FORMING THE COOKING SURFACE
DE7814217U 1978-05-11

Publications (2)

Publication Number Publication Date
EP0005486A1 EP0005486A1 (en) 1979-11-28
EP0005486B1 true EP0005486B1 (en) 1981-07-29

Family

ID=6691372

Family Applications (1)

Application Number Title Priority Date Filing Date
EP79101364A Expired EP0005486B1 (en) 1978-05-11 1979-05-04 Cooking appliance with a vitreous-ceramics cooking plate

Country Status (3)

Country Link
EP (1) EP0005486B1 (en)
AT (1) ATE126T1 (en)
DE (2) DE7814217U1 (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2915529C3 (en) * 1979-04-18 1981-10-29 Gebrüder Thielmann AG KG, 6342 Haiger Built-in hob with a hob made of glass ceramic material
DE3037965C2 (en) * 1980-10-08 1982-10-28 Blanc Gmbh & Co, 7519 Oberderdingen Cooking hob with a glass ceramic plate forming the cooking surface
DE3204760A1 (en) * 1982-02-11 1983-08-18 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Cooking top made of glass-ceramic material with a radiant heating element
GB8621876D0 (en) * 1986-09-11 1986-10-15 Thorn Emi Appliances Cooking hob
GB2214767A (en) * 1988-01-28 1989-09-06 Electrolux Ab Ceramic hot-plates
FR2664458A1 (en) * 1990-07-06 1992-01-10 Philips Electronique Lab HEATING TABLE.
IT221701Z2 (en) * 1991-02-28 1994-09-15 Smeg Spa CONTAINER OF CONTROL DEVICES FOR BUILT-IN HOB
ES2070740B1 (en) * 1993-02-17 1997-06-01 Balay Sa CONNECTOR SYSTEM FOR COOKING DEVICES.
DE19527823A1 (en) * 1995-07-29 1997-01-30 Ego Elektro Blanc & Fischer Hob unit with several hotplates arranged below a plate

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2205132C3 (en) * 1972-02-03 1980-09-04 E.G.O. Elektro-Geraete Blanc U. Fischer, 7519 Oberderdingen Electric cooker
DE2331270C2 (en) * 1973-06-19 1983-03-10 Jenn-Air Corp., 46226 Indianapolis, Ind. Stove with interchangeable cooking units
DE2340818C3 (en) * 1973-08-11 1980-02-14 E.G.O. Elektro-Geraete Blanc U. Fischer, 7519 Oberderdingen Support frame for an electric hotplate
DE7718108U1 (en) * 1977-06-08 1977-09-22 Imperial-Werke Gmbh, 4980 Buende BUILT-IN HOB WITH A GLASS CERAMIC HOT PLATE

Also Published As

Publication number Publication date
ATE126T1 (en) 1981-08-15
EP0005486A1 (en) 1979-11-28
DE2960523D1 (en) 1981-10-29
DE7814217U1 (en) 1978-08-24

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