EP0101002B1 - Built in assembly for an electric cooking plate with a support ring surrounding this plate - Google Patents

Built in assembly for an electric cooking plate with a support ring surrounding this plate Download PDF

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Publication number
EP0101002B1
EP0101002B1 EP83107628A EP83107628A EP0101002B1 EP 0101002 B1 EP0101002 B1 EP 0101002B1 EP 83107628 A EP83107628 A EP 83107628A EP 83107628 A EP83107628 A EP 83107628A EP 0101002 B1 EP0101002 B1 EP 0101002B1
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EP
European Patent Office
Prior art keywords
ring
hotplate
intermediate ring
mounting plate
support ring
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
EP83107628A
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German (de)
French (fr)
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EP0101002A2 (en
EP0101002A3 (en
Inventor
Karl Fischer
Felix Schreder
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.)
Filing date
Publication date
Priority claimed from DE19823230085 external-priority patent/DE3230085A1/en
Application filed by EGO Elektro Gerate Blanc und Fischer GmbH filed Critical EGO Elektro Gerate Blanc und Fischer GmbH
Priority to AT83107628T priority Critical patent/ATE38279T1/en
Publication of EP0101002A2 publication Critical patent/EP0101002A2/en
Publication of EP0101002A3 publication Critical patent/EP0101002A3/en
Application granted granted Critical
Publication of EP0101002B1 publication Critical patent/EP0101002B1/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
    • F24C15/102—Tops, e.g. hot plates; Rings electrically heated

Definitions

  • the invention relates to a built-in arrangement for an electric hotplate with a supporting ring surrounding it, according to the preamble of claim 1.
  • FR-A-2 457 052 is the installation of a hotplate in a wooden or the like.
  • existing worktop become known, with an annular ceramic plate interposed as a mounting plate.
  • a flat support ring rests on this, and it has a rib on the underside on which a lower end cover is supported.
  • This ring plate replaces the usual built-in plate of the cooker. It would be less suitable for use as an intermediate ring between a hotplate and a glass ceramic plate because of its own sensitivity to breakage and difficult to manufacture.
  • the shielding of the built-in plate against the heat of the electric hotplate is to be achieved by mounting the hotplate completely above the built-in plate, which is, however, optically and functionally disruptive because pulling the cooking vessels from the built-in plate onto the electric hotplate is not possible.
  • the material of the mounting plate extends close to the hotplate circumference, because the seal located centrally under the intermediate ring requires this.
  • the object of the invention is to provide a built-in arrangement which enables a relatively flat installation of conventional, not to be specially adapted electric hot plates in temperature-sensitive built-in plates, in particular made of glass or ceramic, also with sheet metal intermediate rings.
  • conventional hotplates with a relatively narrow support ring also known as the "overflow rim” can be used. Since it lies on the mounting plate with the outside edge and, if necessary, its seal is located there, the opening in the mounting plate can be significant The opening edge of the built-in plate is therefore at a considerable distance from the outer circumference of the electric hotplate and can therefore be kept at a lower temperature level.
  • the choice of a flat intermediate ring enables a relatively flat hotplate installation with all the resulting aesthetic properties The problem of tarnishing colors is solved by the enamelling.
  • the intermediate ring is made of a different material than the supporting ring, there is anyway an optical separation, the intermediate ring optically either as a separate part or possibly also as an installation plan proper section is felt. Since the intermediate ring is made of a thicker sheet material than the supporting ring, there is a comparable stiffness for both rings, because the supporting ring is narrower on the one hand and profiled more strongly on the other hand, while the intermediate ring is wider and flatter.
  • the surface coating in the form of an enamel not only ensures that a material with a high level of strength and thermal properties can be used, the cost of which is orders of magnitude less than that of a stainless steel ring, but also an optically and thermally favorable transition to the glass plate is achieved.
  • the surface of the enamelled ring adapts ideally to the mostly dark-colored glass surface of the mounting plate, and the ring is extremely easy to clean.
  • the enamelling is also a surface insulation. Without special earthing measures, earthing of this ring could not be absolutely guaranteed.
  • the relatively wide ring covers a gap between the hotplate and the built-in plate and it would be possible for a cable loosening on the underside of the hob to protrude into this gap and to put tension on the intermediate ring from the inside. Complete electrical safety is also established for this unlikely case.
  • an insert ring can be provided in the installation arrangement, which is completely covered by the intermediate ring and has an essentially annular shielding section covering the opening edge of the opening and means for positioning a seal in such a position that the effective between the mounting plate and the intermediate ring Sealing area is close to the outer circumference of the intermediate ring.
  • This separate insert ring shields the parts of the mounting plate facing the hotplate, namely the inner opening edge and its upper edge. At the same time, he positions the seal so that it interacts with the outer edge of the intermediate ring. There, the seal is least thermally stressed and makes it possible to make the opening as large as possible.
  • the insert ring has a generally L-shaped cross section with an outwardly projecting upper flange.
  • the seal can be a sealing ring enclosing the installation opening with a substantially U-shaped cross section, on the upper leg of which the sealing area is provided and which preferably has inwardly directed ribs centering the insert ring.
  • This sealing ring forms an additional mechanical and thermal shielding of the sensitive opening edge and is also thermally shielded and centered by the insert ring and secured against jumping off the opening edge.
  • the centering ribs form the smallest possible contact area between the insert ring and the seal and an insulating air space between them.
  • the means for positioning the seal can thus be formed by the outer circumference of the cylindrical part of the insert ring or also by the end region of the flange around which a sealing lip can wrap.
  • the width of the intermediate ring can preferably be two to four times greater than its height between the support of the outer edge of the support ring on it and its support on the mounting plate.
  • the intermediate ring has an inner edge which is covered by the supporting ring and is directed inwards at an incline upwards and which, in cooperation with the supporting ring, forms a centering edge.
  • the hotplate On this inner edge, which extends quite high into the supporting ring, the hotplate is centered on the one hand on the intermediate ring or, if the hotplate is itself centered by its fastening, the intermediate ring in its position relative to the mounting plate.
  • the intermediate ring has a flat S-shaped cross section with three sloping sections sloping outwards, in which there is a very flat middle section between the inner edge and a likewise steep outer edge.
  • the inner edge and outer edge can preferably be steeper than 45 ° (preferably 60 °), while the central region has a slope between 3 and 10 °.
  • the intermediate ring can be a simply lying sheet metal ring with a flat cross-section. So it does not need to be double-walled or made of solid material, which not only brings manufacturing advantages, but also improves the function. If the insert ring advantageously has means for centering the hotplate on its inside, it serves a triple purpose, namely the exact positioning of the seal and the intermediate ring to the outside, the thermal shielding of the edge of the glass plate and at the same time the exact positioning or centering of the electric hotplate inside.
  • the invention makes it possible for hotplates of different outside diameters to be used in mounting plates with a certain hole size.
  • insert rings with differently long, inwardly directed tab parts for adapting hot plates of different diameters are provided for a specific hole diameter in the mounting plate.
  • the insert ring can be provided for the indirect centering of the hotplate in a substructure for the mounting plate, in that centering projections of the substructure are supported on the insert ring.
  • the hotplate has on its upper outer circumference a projecting flange 12 against which a support ring 13 made of sheet metal is supported from below, which has an inverted and irregular U-shaped cross-section, the outer leg of which extends obliquely at an outside angle of approximately 45 ° .
  • the outer edge 21 of the support ring lies on an intermediate ring 15 which has a flat S-shaped cross section.
  • At its middle section 43 which slopes outwards at a very flat angle, there are steeper inner and outer edges 39, 41 on the inside and outside, which have an incline of more than 45 ° (preferably 60 °).
  • the out Senrand 21 of the quite wide support ring 13 lies in the area of the kink between the inner edge 39 and the central portion 43 on the latter.
  • the intermediate ring 15 has a height h which is approximately half to a quarter of the width b measured between the same points.
  • the inner edge 39 rises up in the support ring and forms a centering edge.
  • the support ring 13 normally consists of relatively thin stainless steel in the order of magnitude of 0.4 mm thickness
  • the intermediate ring consists of thicker sheet metal of approximately 0.8 mm thickness, which has a surface coating 25, for example enamelling, on its outside.
  • the inside diameter of the opening 16 is considerably larger than the outside diameter of the hotplate including the support ring 13.
  • the outer edge 41 of the intermediate ring 15 lies on a mounting plate 19, which consists of a plate made of relatively heat-resistant glass or ceramic.
  • the flat mounting plate carries the cut-out openings 16 for several hotplates and is itself built into an opening of a worktop of a kitchen furniture or a cooker.
  • the opening edge 23 of the mounting plate 19 is encompassed by a seal 26 which has a U-shaped cross section with legs 37 facing outwards and covering the upper and lower edge regions.
  • the seal made of heat-resistant plastic has protruding, annular ribs 30.
  • An insert ring 31 has an essentially L-shaped shape with a cylindrical shielding section 32 and an outer flange 33 which is slightly beveled downwards in accordance with the shape of the sealing ring.
  • the flange 33 ends somewhat in front of the end of the leg 37 of the seal, so that the outer end of the leg of the seal 37 abuts against the inside of the outer edge 41 of the intermediate ring and seals it.
  • the insert ring 31 shields the seal against direct heat radiation both from the hotplate and also from the inner regions of the support ring and the intermediate ring, so that the seal only comes into contact with its outer region with the connection to the hotplate formed by the support ring and intermediate ring. Air gaps form between the ribs 30 and the shielding section 32, which provide additional insulation.
  • the substructure also has an opening in the area of the installation opening 16, but is underlaid there by a trough-shaped or bow-shaped part 48, on which the plate can be braced via a central bolt.
  • the clamping force does not apply any bending stress to the mounting plate 19.
  • centering projections 53 are provided on the inner circumference of its opening, which have the shape of inwardly directed tabs, which can be somewhat bent and preferably have a blunt, inwardly directed tip (FIG. 2), which the Heat conduction minimized. They cooperate with the hotplate edge 14 to center it directly on the substructure.
  • the shielding section 32 extends down to the substructure 49 and shields the seal 26 and mounting plate 19 against radiation.
  • FIGS. 1 and 2 show an arrangement which corresponds to FIGS. 1 and 2 except for the differences described below.
  • the same or comparable parts have the same reference numerals and are not explained again.
  • the intermediate ring 15 is made at substantially the same height h with an even greater width b, but its remaining shape corresponds to that already described.
  • the seal 26 has a different shape and dimension of the ribs 30, which press against the insert ring 31 in the manner of a sealing lip.
  • the upper leg 37 of the seal 26 has an outer sealing lip 45 which is tipped back inward in a C-shape and which lies around the outer edge of the flange 33 of the insert ring 31 and thus forms a large-area contact between the outer edge 41 of the intermediate ring and the seal, which forms extends into the bend to the middle section 43.
  • the seal is not completely shielded against the electric hotplate; however, this is justifiable due to the larger width of the intermediate ring.
  • the difference between the diameter of the opening 16 and the outer diameter of the electric hotplate is even greater than in the embodiment according to FIG. And is more than twice the width of the support ring visible from the outside.
  • the intermediate ring is advantageously considerably wider than the supporting ring, especially when one considers the areas of the supporting ring and / or intermediate ring that are visible from the outside.
  • the outer surfaces or edges of flange 12, support ring 13, intermediate ring 15 and mounting plate 19 lie on a gently rising curve, the maximum slope of which is below 50 °.
  • the shielding section 32a extends below the lower edge of the seal 26 and the level of the substructure 49, the centering projections 53a of which interact with the insert ring 31a.
  • a plurality of sheet-metal parts L-shaped in cross section L-shaped are welded, one leg abutting the shielding section 32a of the insert ring 31a, while the other leg projecting inwardly forms a tab 47 with a rounded or pointed end. It extends to just before the hotplate edge 14.
  • the electric hotplate 11 is thus exactly centered with respect to the insert ring and thus indirectly with respect to the mounting plate 19 and, via the centering projections 53a, also the substructure 49.
  • FIG. 4 shows a bottom view of one of the centering projections 53a, which cooperates with the outer surface of the insert ring 31a. Furthermore, it is shown that at least one of the centering projections is designed as a step-shaped projection 53b, the middle part 55 of which engages in a recess 56 of the shielding section 32a and secures the insert ring against rotation, while the recessed side parts 57 cooperate with the outer surface of the shielding section for centering.
  • FIG. 5 shows a plan view of a cooker with conventional hot plates 11 which are arranged at a distance from one another and which are installed in a hot plate 60 made, for example, of sheet metal.
  • An elongated rectangular area of the hotplate 60 is recessed in the shape of a trough and in this area, essentially flush with the surface of the hotplate, a built-in plate 19a made of tempered glass is installed. It has two circular openings, the edge 23 of which is indicated by dashed lines, which are arranged in the longitudinal direction of the mounting plate and overlap somewhat in the middle so that they are connected to one another.
  • two hotplates 11 of conventional design are installed, the support rings 13 of which are supported on a double ring 15a, which in its cross-sectional shape and the other properties can correspond to the rings 15 of FIGS. 1 and 2, but consists of two rings, which in the Middle are coherent.
  • the double ring 15a like the opening, has an 8 or glasses-like shape. It can be formed from two rings of different sizes, in which two hot plates of different sizes are then inserted. It is also possible to design the connection area differently, for example by rounding out the resulting inward recesses 61 or the like.
  • a continuous support bracket 48a is provided, which extends from one narrow side of the mounting plate 19a to the other and has supports 62 in the lateral central region (near the indentations 61). The support bracket thus also ensures that the mounting plate 19a is protected against heavy loads or bending.
  • the two hot plates 11 are arranged very close to one another, whereas previously a minimum distance of 5 cm was customary. Both hot plates each have a single, but possibly structurally combined switch and can be switched on and off individually. They can therefore be used both as single hot plates and as coherent hot plates. For this, however, it is necessary that their upper cooking surfaces are exactly aligned with each other, which was not possible with the usual sheet metal constructions due to stress and heat-related shapes.
  • the glass mounting plate 19a ensures that this flatness is maintained, especially when the bracket 48 is used.
  • the double intermediate ring 15a likewise provides the stiffening and enables the hotplates to be aligned well with one another and also ensures that thermal expansions, which can have considerable values across the dimensions of both hotplates, are compensated for.
  • the mounting plate 19a can either be used in stovetops or independently in worktops.
  • a stove with four normal hot plates and a double cooking unit according to FIG. 5 is particularly preferred.

Description

Die Erfindung betrifft eine Einbauanordnung für eine Elektrokochplatte mit einem sie umgebenden Tragring nach dem Oberbegriff des Anspruches 1.The invention relates to a built-in arrangement for an electric hotplate with a supporting ring surrounding it, according to the preamble of claim 1.

Es sind bereits Einbauplatten aus Glas oder Keramik bekannt geworden, die steifer und unempfindlicher sind und eine leicht zu reinigende Oberfläche haben. Die Wärmeschockempfindlichkeit dieser Platten macht es erforderlich, besondere Massnahmen zu ergreifen, um die Einbauplatten gegen die Wärme der Kochplatten zu schützen.Built-in plates made of glass or ceramic have already become known, which are stiffer and less sensitive and have an easy-to-clean surface. The heat shock sensitivity of these plates makes it necessary to take special measures to protect the built-in plates against the heat of the hot plates.

Aus der FR-A-2 457 052 ist der Einbau einer Kochplatte in eine aus Holz o.dgl. bestehende Arbeitsplatte bekannt geworden, wobei als Einbauplatte eine ringförmige Keramikplatte zwischengeschaltet ist. Auf dieser liegt ein flacher Tragring auf, und sie hat an der Unterseite eine Rippe, an der sich ein unterer Abschlussdeckel abstützt. Diese Ring-Platte ersetzt hier die übliche Einbauplatte des Herdes. Zur Verwendung als Zwischenring zwischen einer Kochplatte und einer Glaskeramikplatte wäre sie wegen der eigenen Bruchempfindlichkeit und schwierigen Herstellbarkeit weniger geeignet.From FR-A-2 457 052 is the installation of a hotplate in a wooden or the like. existing worktop become known, with an annular ceramic plate interposed as a mounting plate. A flat support ring rests on this, and it has a rib on the underside on which a lower end cover is supported. This ring plate replaces the usual built-in plate of the cooker. It would be less suitable for use as an intermediate ring between a hotplate and a glass ceramic plate because of its own sensitivity to breakage and difficult to manufacture.

Aus der US-A-3 838 249 ist es bekannt geworden, eine Elektrokochplatte in die Öffnung einer aus Glas oder Keramik bestehenden Einbauplatte einzubauen, wobei zwischen dem Tragring und der Einbauplatte ein Zwischenring mit einem hohen und steilen Aussenabschnitt zwischengeschaltet ist. Dieser übernimmt jedoch keine Trag-, sondern nur Abschirmfunktionen und überbrückt daher auch nicht mechanisch den Abstand zwischen dem Kochplattenkörper und der Glaskeramikplatte, die fast bis an den Kochplattenkörper heranreicht. Es ergibt sich ein sehr hoher und für die Benutzung und die Bruchsicherheit der Einbauplatte ungünstiger Einbau.From US-A-3 838 249 it has become known to install an electric hotplate in the opening of a built-in plate made of glass or ceramic, an intermediate ring having a high and steep outer section being interposed between the support ring and the built-in plate. However, this takes over no supporting, but only shielding functions and therefore does not mechanically bridge the distance between the hotplate body and the glass ceramic plate, which almost reaches the hotplate body. The result is a very high installation which is unfavorable for the use and the break resistance of the mounting plate.

Aus der DE-A-2 126 614 ist eine Einbauanordnung bekannt geworden, bei der ein sehr hoher Zwischenring verwendet wird, der aus Vollmaterial oder doppelwandig so ausgeführt ist, dass seine etwas gegenüber dem Aussenrand zurückgesetzte, flache Unterseite eine Dichtung aufnehmen kann, die auf der Einbauplatte aufliegt. Dieser Zwischenring ist kompliziert aufgebaut und erfordert eine sehr genaue Abstimmung der Dichtung im Vergleich zum Anpressdruck, damit der Einbau einerseits dicht ist und andererseits der Aussenrand etwa an der Einbauplatte anliegt, um keinen störenden Spalt zu ergeben. Die Abschirmung der Einbauplatte vor der Wärme der Elektrokochplatte soll dadurch erreicht werden, dass die Kochplatte völlig oberhalb der Einbauplatte montiert wird, was jedoch optisch und funktionell störend ist, weil ein Herüberziehen der Kochgefässe von der Einbauplatte auf die Elektrokochplatte nicht möglich ist. Ausserdem reicht das Material der Einbauplatte bis nahe an den Kochplattenumfang heran, weil die mittig unter dem Zwischenring liegende Dichtung dies erfordert.From DE-A-2 126 614 an installation arrangement has become known in which a very high intermediate ring is used, which is made of solid material or double-walled in such a way that its flat underside, which is set back somewhat from the outer edge, can accommodate a seal that opens onto the mounting plate rests. This intermediate ring has a complicated structure and requires a very precise adjustment of the seal compared to the contact pressure, so that the installation is tight on the one hand and on the other hand the outer edge lies against the mounting plate, so as not to produce an annoying gap. The shielding of the built-in plate against the heat of the electric hotplate is to be achieved by mounting the hotplate completely above the built-in plate, which is, however, optically and functionally disruptive because pulling the cooking vessels from the built-in plate onto the electric hotplate is not possible. In addition, the material of the mounting plate extends close to the hotplate circumference, because the seal located centrally under the intermediate ring requires this.

Aus der DE-U-7 914 082 ist bereits ein flacher und breiter Tragring bekannt geworden, der sich mit einer Dichtung im Aussenbereich auf der Keramik-Einbauplatte stützt. Dieser Ring ermöglicht es zwar, den Randbereich der Einbauplatte auf einem niedrigeren Temperaturniveau zu halten, erfordert jedoch eine Sonderkonstruktion bezüglich des Tragringes der Elektrokochplatte und muss wegen seiner breiten, flachen Form aus relativ starkem Material hergestellt werden, um bei stärkerer Belastung nicht federnd nachzugeben. Ausserdem ist durch den relativ grossen Temperaturgradienten zwischen seinem Innen-und Aussenumfang eine unterschiedliche Verfärbung dieses Ringes durch Anlauffarben zu befürchten, was optisch stört.From DE-U-7 914 082 a flat and wide support ring has already become known which is supported on the ceramic mounting plate with a seal in the outer region. Although this ring makes it possible to keep the edge area of the mounting plate at a lower temperature level, it requires a special design with regard to the support ring of the electric hotplate and, because of its wide, flat shape, must be made of relatively strong material in order not to yield resiliently under greater load. In addition, due to the relatively large temperature gradient between its inner and outer circumference, different discoloration of this ring due to tarnish colors is to be feared, which is visually disturbing.

Aufgabe der Erfindung ist es, eine Einbauanordnung zu schaffen, die einen relativ flachen Einbau von üblichen, nicht gesondert anzupassenden Elektrokochplatten in temperaturempfindliche, insbesondere aus Glas oder Keramik bestehende Einbauplatten auch mit Blech-Zwischenringen ermöglicht.The object of the invention is to provide a built-in arrangement which enables a relatively flat installation of conventional, not to be specially adapted electric hot plates in temperature-sensitive built-in plates, in particular made of glass or ceramic, also with sheet metal intermediate rings.

Diese Aufgabe wird durch den Anspruch 1 gelöst.This object is solved by claim 1.

Durch die Verwendung eines solchen Zwischenringes können übliche Kochplatten mit einem relativ schmalen Tragring (auch «Überfallrand" genannt) verwendet werden. Da er mit dem Aussenrand auf der Einbauplatte aufliegt und sich dort ggf. auch seine Dichtung befindet, kann die Öffnung in der Einbauplatte wesentlich grösser gemacht werden als der Gesamtdurchmesser der Kochplatte. Der Öffnungsrand der Einbauplatte hat also einen erheblichen Abstand von dem Aussenumfang der Elektrokochplatte und ist schon dadurch auf einem niedrigeren Temperaturniveau zu halten. Die Wahl eines flachen Zwischenringes ermöglicht einen relativ flachen Kochplatteneinbau mit allen sich daraus ergebenden ästhetischen und Gebrauchsvorteilen. Das Problem der Anlauffarben ist durch die Emaillierung gelöst. Da der Zwischenring aus einem anderen Material besteht als der Tragring, ergibt sich ohnehin eine optische Trennung, wobei der Zwischenring optisch entweder als gesonderter Teil oder evtl. auch als ein zur Einbauplatte gehöriger Abschnitt empfunden wird. Da der Zwischenring aus einem dickeren Blechmaterial besteht als der Tragring, ergibt sich eine vergleichbare Steifheit für beide Ringe, weil der Tragring einerseits schmaler und andererseits stärker profiliert ist, während der Zwischenring breiter und flacher ist. Durch die Oberflächenbeschichtung in Form einer Emaillierung wird nicht nur erreicht, dass ein festigkeitsmässig und thermisch günstiges Material eingesetzt werden kann, dessen Kosten um Grössenordnungen unter denen eines rostfreien Stahlringes liegen, sondern es wird auch ein optisch und thermisch günstiger Übergang auf die Glasplatte erreicht. Die Oberfläche des emaillierten Ringes passt sich der meist dunkel gefärbten Glasoberffäche der Einbauplatte in idealer Weise an, und der Ring ist ausserordentlich reinigungsfreundlich.By using such an intermediate ring, conventional hotplates with a relatively narrow support ring (also known as the "overflow rim") can be used. Since it lies on the mounting plate with the outside edge and, if necessary, its seal is located there, the opening in the mounting plate can be significant The opening edge of the built-in plate is therefore at a considerable distance from the outer circumference of the electric hotplate and can therefore be kept at a lower temperature level. The choice of a flat intermediate ring enables a relatively flat hotplate installation with all the resulting aesthetic properties The problem of tarnishing colors is solved by the enamelling. Since the intermediate ring is made of a different material than the supporting ring, there is anyway an optical separation, the intermediate ring optically either as a separate part or possibly also as an installation plan proper section is felt. Since the intermediate ring is made of a thicker sheet material than the supporting ring, there is a comparable stiffness for both rings, because the supporting ring is narrower on the one hand and profiled more strongly on the other hand, while the intermediate ring is wider and flatter. The surface coating in the form of an enamel not only ensures that a material with a high level of strength and thermal properties can be used, the cost of which is orders of magnitude less than that of a stainless steel ring, but also an optically and thermally favorable transition to the glass plate is achieved. The surface of the enamelled ring adapts ideally to the mostly dark-colored glass surface of the mounting plate, and the ring is extremely easy to clean.

Die Emaillierung stellt auch eine Oberflächenisolierung dar. Ohne besondere Erdungsmassnahmen könnte eine Erdung dieses Ringes nicht absolut sichergestellt werden.The enamelling is also a surface insulation. Without special earthing measures, earthing of this ring could not be absolutely guaranteed.

Der relativ breite Ring überdeckt einen Spalt zwischen der Kochplatte und der Einbauplatte und es wäre möglich, dass ein sich an der Unterseite der Kochmulde lockerndes Kabel in diesen Spalt hineinragt und den Zwischenring von innen her unter Spannung setzt. Auch für diesen zwar unwahrscheinlichen Fall ist eine vollständige elektrische Sicherheit hergestellt.The relatively wide ring covers a gap between the hotplate and the built-in plate and it would be possible for a cable loosening on the underside of the hob to protrude into this gap and to put tension on the intermediate ring from the inside. Complete electrical safety is also established for this unlikely case.

Vorteilhaft kann bei der Einbauanordnung ein Einsatzring vorgesehen sein, der von dem Zwischenring vollständig überdeckt ist und einen den Öffnungsrand der Öffnung überdeckenden, im wesentlichen ringförmigen Abschirmungsabschnitt und Mittel zum Positionieren einer Dichtung in einer solchen Lage aufweist, dass der zwischen der Einbauplatte und dem Zwischenring wirksame Dichtbereich nahe am Aussenumfang des Zwischenringes liegt. Dieser gesonderte Einsatzring schirmt die der Kochplatte zugekehrten Teile der Einbauplatte ab, nämlich den inneren Öffnungsrand und seine obere Kante. Gleichzeitig positioniert er die Dichtung so, dass sie mit dem Aussenrand des Zwischenringes zusammenwirkt. Dort ist die Dichtung thermisch am wenigsten belastet und ermöglicht es, die Öffnung so gross wie möglich zu machen.Advantageously, an insert ring can be provided in the installation arrangement, which is completely covered by the intermediate ring and has an essentially annular shielding section covering the opening edge of the opening and means for positioning a seal in such a position that the effective between the mounting plate and the intermediate ring Sealing area is close to the outer circumference of the intermediate ring. This separate insert ring shields the parts of the mounting plate facing the hotplate, namely the inner opening edge and its upper edge. At the same time, he positions the seal so that it interacts with the outer edge of the intermediate ring. There, the seal is least thermally stressed and makes it possible to make the opening as large as possible.

Der Einsatzring hat einen generell L-förmigen Querschnitt mit einem nach aussen ragenden oberen Flansch.The insert ring has a generally L-shaped cross section with an outwardly projecting upper flange.

Die Dichtung kann ein die Einbauöffnung einfassender Dichtungsring mit im wesentlichen U-förmigem Querschnitt sein, an dessen oberen Schenkel der Dichtbereich vorgesehen ist, und der vorzugsweise nach innen gerichtete, den Einsatzring zentrierende Rippen aufweist. Dieser Dichtungsring bildet eine zusätzliche mechanische und thermische Abschirmung des empfindlichen Öffnungsrandes und wird darüberhinaus von dem Einsatzring thermisch abgeschirmt und zentriert, sowie gegen Abspringen vom Öffnungsrand gesichert. Durch die Zentrierrippen wird ein möglichst geringer Kontaktbereich zwischen Einsatzring und Dichtung und ein isolierender Luftraum zwischen diesen gebildet. Die Mittel zum Positionieren der Dichtung können also durch den Aussenumfang des zylindrischen Teils des Einsatzringes gebildet sein oder auch durch den Endbereich des Flansches, um den sich eine Dichtungslippe herumlegen kann. Vorzugsweise kann die Breite des Zwischenringes um das zwei- bis vierfache grösser sein als seine Höhe zwischen der Auflage des Aussenrandes des Tragringes auf ihm und seiner Auflage auf der Einbauplatte.The seal can be a sealing ring enclosing the installation opening with a substantially U-shaped cross section, on the upper leg of which the sealing area is provided and which preferably has inwardly directed ribs centering the insert ring. This sealing ring forms an additional mechanical and thermal shielding of the sensitive opening edge and is also thermally shielded and centered by the insert ring and secured against jumping off the opening edge. The centering ribs form the smallest possible contact area between the insert ring and the seal and an insulating air space between them. The means for positioning the seal can thus be formed by the outer circumference of the cylindrical part of the insert ring or also by the end region of the flange around which a sealing lip can wrap. The width of the intermediate ring can preferably be two to four times greater than its height between the support of the outer edge of the support ring on it and its support on the mounting plate.

Der Zwischenring hat einen vom Tragring überdeckten, nach innen schräg aufwärts gerichteten Innenrand, der im Zusammenwirken mit dem Tragring einen Zentrierrand bildet. Auf diesem vorzugsweise recht hoch in den Tragring hineinreichenden Innenrand zentriert sich einerseits die Kochplatte auf dem Zwischenring oder, falls die Kochplatte durch ihre Befestigung selbst zentriert ist, der Zwischenring in seiner Lage relativ zur Einbauplatte. Der Zwischenring hat einen flach-S-förmigen Querschnitt mit drei nach aussen abfallend geschrägten Abschnitten, bei dem zwischen dem Innenrand und einem ebenfalls steilen Aussenrand ein sehr flacher Mittelabschnitt liegt. Innenrand und Aussenrand können vorzugsweise steiler sein als 45° (vorzugsweise 60°), während der Mittelbereich eine Steigung zwischen 3 und 10° hat. Der Zwischenring kann ein einfach liegender, im Querschnitt flach profilierter Blechring sein. Er braucht also nicht doppelwandig oder aus massivem Material ausgeführt zu sein, was nicht nur Herstellungsvorteile mit sich bringt, sondern auch die Funktion verbessert. Wenn vorteilhaft der Einsatzring an seiner Innenseite Mittel zum Zentrieren der Kochplatte aufweist, dient er einem dreifachen Zweck, nämlich der exakten Positionierung der Dichtung und des Zwischenringes nach aussen hin, der thermischen Abschirmung des Randes der Glasplatte und gleichzeitig der exakten Positionierung bzw. Zentrierung der Elektrokochplatte nach innen hin. Die Erfindung macht es möglich, dass in Einbauplatten mit einer bestimmten Lochgrösse Kochplatten unterschiedlichen Aussendurchmessers eingesetzt werden können. Zu diesem Zweck ist erfindungsgemäss vorgesehen, dass Einsatzringe mit unterschiedlich langen, nach innen gerichteten Laschenteilen zur Anpassung von Kochplatten unterschiedlichen Durchmessers für einen bestimmten Lochdurchmesser in der Einbauplatte vorgesehen sind. Ferner kann der Einsatzring zur mittelbaren Zentrierung der Kochplatte in einer Unterkonstruktion für die Einbauplatte vorgesehen sein, indem Zentriervorsprünge der Unterkonstruktion sich an dem Einsatzring abstützen.The intermediate ring has an inner edge which is covered by the supporting ring and is directed inwards at an incline upwards and which, in cooperation with the supporting ring, forms a centering edge. On this inner edge, which extends quite high into the supporting ring, the hotplate is centered on the one hand on the intermediate ring or, if the hotplate is itself centered by its fastening, the intermediate ring in its position relative to the mounting plate. The intermediate ring has a flat S-shaped cross section with three sloping sections sloping outwards, in which there is a very flat middle section between the inner edge and a likewise steep outer edge. The inner edge and outer edge can preferably be steeper than 45 ° (preferably 60 °), while the central region has a slope between 3 and 10 °. The intermediate ring can be a simply lying sheet metal ring with a flat cross-section. So it does not need to be double-walled or made of solid material, which not only brings manufacturing advantages, but also improves the function. If the insert ring advantageously has means for centering the hotplate on its inside, it serves a triple purpose, namely the exact positioning of the seal and the intermediate ring to the outside, the thermal shielding of the edge of the glass plate and at the same time the exact positioning or centering of the electric hotplate inside. The invention makes it possible for hotplates of different outside diameters to be used in mounting plates with a certain hole size. For this purpose it is provided according to the invention that insert rings with differently long, inwardly directed tab parts for adapting hot plates of different diameters are provided for a specific hole diameter in the mounting plate. Furthermore, the insert ring can be provided for the indirect centering of the hotplate in a substructure for the mounting plate, in that centering projections of the substructure are supported on the insert ring.

Weitere Vorteile und Merkmale von bevorzugten Ausführungsformen gehen aus der Beschreibung und den Zeichnungen hervor. Zwei Ausführungsbeispiele sind in der Zeichnung dargestellt und werden im folgenden näher erläutert. Es zeigen:

  • Fig. 1 und 3 zwei Teilquerschnitte durch die Einbauanordnung, d.h. den Verbindungsbereich zwischen Kochplattenkörper und Einbauplatte;
  • Fig. 2 und 4 verkleinerte Teilansichten in Richtung der Pfeile II und IV;
  • Fig. 5 eine Draufsicht auf ein Kochgerät.
  • Fig. 1 und 2 zeigt eine Elektrokochplatte 11, deren Kochplattenkörper aus Gussmaterial besteht, die eine obere ebene, geschlossene Kochfläche hat und von an ihrer Unterseite in Nuten eingelegten Heizwiderständen (nicht dargestellt) elektrisch beheizt wird.
Further advantages and features of preferred embodiments are evident from the description and the drawings. Two exemplary embodiments are shown in the drawing and are explained in more detail below. Show it:
  • 1 and 3 show two partial cross sections through the installation arrangement, ie the connection area between the hotplate body and the installation plate;
  • Figures 2 and 4 reduced partial views in the direction of arrows II and IV;
  • Fig. 5 is a plan view of a cooking device.
  • 1 and 2 shows an electric hotplate 11, the hotplate body of which is made of cast material, which has an upper flat, closed cooking surface and is electrically heated by heating resistors (not shown) inserted in grooves on its underside.

Die Kochplatte hat an ihrem oberen Aussenumfang einen vorstehenden Flansch 12, gegen den sich von unten her ein aus Blech bestehender Tragring 13 abstützt, der einen umgekehrt und unregelmässigen U-förmigen Querschnitt hat, dessen Aussenschenkel sich schräg unter ca. 45° nach unten aussen erstreckt. Der Aussenrand 21 des Tragringes liegt auf einem Zwischenring 15 auf, der einen flach-S-förmigen Querschnitt hat. An seinen unter einem sehr flachen Winkel nach aussen abfallenden Mittelabschnitt 43 schliessen sich innen und aussen jeweils steilere Innen- und Aussenränder 39, 41 an, die eine Steigung von mehr als 45° (vorzugsweise 60°) haben. Der Aussenrand 21 des recht breiten Tragringes 13 liegt im Bereich des Knickes zwischen dem Innenrand 39 und dem Mittelabschnitt 43 auf letzteren auf. Zwischen dieser Auflageposition und der Aussenkante des Aussenrandes hat der Zwischenring 15 eine Höhe h, die etwa die Hälfte bis ein Viertel der zwischen den gleichen Punkten gemessenen Breite b beträgt. Der Innenrand 39 ragt in dem Tragring hoch und bildet einen Zentrierrand.The hotplate has on its upper outer circumference a projecting flange 12 against which a support ring 13 made of sheet metal is supported from below, which has an inverted and irregular U-shaped cross-section, the outer leg of which extends obliquely at an outside angle of approximately 45 ° . The outer edge 21 of the support ring lies on an intermediate ring 15 which has a flat S-shaped cross section. At its middle section 43, which slopes outwards at a very flat angle, there are steeper inner and outer edges 39, 41 on the inside and outside, which have an incline of more than 45 ° (preferably 60 °). The out Senrand 21 of the quite wide support ring 13 lies in the area of the kink between the inner edge 39 and the central portion 43 on the latter. Between this support position and the outer edge of the outer edge, the intermediate ring 15 has a height h which is approximately half to a quarter of the width b measured between the same points. The inner edge 39 rises up in the support ring and forms a centering edge.

Während der Tragring 13 normalerweise aus relativ dünnem rostfreiem Stahl in der Grössenordnung von 0,4 mm Dicke besteht, besteht der Zwischenring aus dickerem Blech von ca. 0,8 mm Dicke, das an seiner Aussenseite eine Oberflächenbeschichtung 25, beispielsweise eine Emaillierung, besitzt.While the support ring 13 normally consists of relatively thin stainless steel in the order of magnitude of 0.4 mm thickness, the intermediate ring consists of thicker sheet metal of approximately 0.8 mm thickness, which has a surface coating 25, for example enamelling, on its outside.

Dadurch hebt sich der Zwischenring farblich von dem Tragring ab und ist leichter zu reinigen als ein Ring aus rostfreiem Stahl. Der Innendurchmesser der Öffnung 16 ist wesentlich grösser als der Aussendurchmesser der Kochplatte einschliesslich des Tragringes 13.This makes the intermediate ring stand out in color from the support ring and is easier to clean than a ring made of stainless steel. The inside diameter of the opening 16 is considerably larger than the outside diameter of the hotplate including the support ring 13.

Der Aussenrand 41 des Zwischenringes 15 liegt auf einer Einbauplatte 19 auf, die aus einer Platte aus relativ wärmeschockbeständigem Glas oder Keramik besteht. Die flache Einbauplatte trägt die ausgeschnittenen Öffnungen 16 für mehrere Kochplatten und ist selbst in eine Öffnung einer Arbeitsplatte eines Küchenmöbels oder einen Kochherdes eingebaut. Der Öffnungsrand 23 der Einbauplatte 19 wird von einer Dichtung 26 umfasst, die einen U-förmigen Querschnitt mit nach aussen gerichteten, den oberen und unteren Randbereich überdeckenden Schenkeln 37 aufweist. An ihrer Innenseite hat die aus wärmebeständigem Kunststoff hergestellte Dichtung vorstehende, ringförmig umlaufende Rippen 30.The outer edge 41 of the intermediate ring 15 lies on a mounting plate 19, which consists of a plate made of relatively heat-resistant glass or ceramic. The flat mounting plate carries the cut-out openings 16 for several hotplates and is itself built into an opening of a worktop of a kitchen furniture or a cooker. The opening edge 23 of the mounting plate 19 is encompassed by a seal 26 which has a U-shaped cross section with legs 37 facing outwards and covering the upper and lower edge regions. On its inside, the seal made of heat-resistant plastic has protruding, annular ribs 30.

Ein Einsatzring 31 hat eine im wesentlichen L-förmige Gestalt mit einem zylindrischen Abschirmungsabschnitt 32 und einem äusseren Flansch 33, der entsprechend der Gestalt des Dichtungsringes leicht nach unten abgeschrägt ist. Der Flansch 33 endet etwas vor dem Ende des Schenkels 37 der Dichtung, so dass das äussere Ende des Schenkels der Dichtung 37 am Inneren des Aussenrandes 41 des Zwischenringes anliegt und dieses abdichtet.An insert ring 31 has an essentially L-shaped shape with a cylindrical shielding section 32 and an outer flange 33 which is slightly beveled downwards in accordance with the shape of the sealing ring. The flange 33 ends somewhat in front of the end of the leg 37 of the seal, so that the outer end of the leg of the seal 37 abuts against the inside of the outer edge 41 of the intermediate ring and seals it.

Der Einsatzring 31 schirmt die Dichtung gegen direkte Wärmestrahlung sowohl von der Kochplatte als-auch von den inneren Bereichen des Tragringes und des Zwischenringes ab, so dass die Dichtung nur mit ihrem Aussenbereich mit der von Tragring und Zwischenring gebildeten Verbindung zur Kochplatte in Berührung kommt. Zwischen den Rippen 30 und dem Abschirmungsabschnitt 32 bilden sich Luftzwischenräume, die eine zusätzliche Isolierung darstellen. Unter der Einbauplatte 19 liegt eine mulden- oder plattenförmige Unterkonstruktion 49, auf der die Einbauplatte unter Zwischenlage eines den Öffnungsrand 23 untergreifenden Dichtungsflansches 51 aufliegt. Im Bereich der Einbauöffnung 16 hat auch die Unterkonstruktion eine Öffnung, ist dort aber von einem mulden- oder bügelförmigen Teil 48 unterlegt, an dem die Platte über einen Mittelbolzen verspannt sein kann. Dadurch bringt die Spannkraft keine Biegespannung auf die Einbauplatte 19 auf. An der Unterkonstruktion 49 sind am Innenumfang seiner Öffnung mehrere, beispielsweise sechs, Zentriervorsprünge 53 vorgesehen, die die Form nach innen gerichteter Lappen haben, die etwas abgekröpft sein können und vorzugsweise eine stumpfe, nach innen gerichtete Spitze haben (Fig. 2), die die Wärmeleitung minimiert. Sie wirken mit dem Kochplattenrand 14 zu dessen unmittelbarer Zentrierung an der Unterkonstruktion zusammen. Der Abschirmungsabschnitt 32 reicht bis zur Unterkonstruktion 49 herunter und schirmt Dichtung 26 und Einbauplatte 19 gegen Strahlung ab.The insert ring 31 shields the seal against direct heat radiation both from the hotplate and also from the inner regions of the support ring and the intermediate ring, so that the seal only comes into contact with its outer region with the connection to the hotplate formed by the support ring and intermediate ring. Air gaps form between the ribs 30 and the shielding section 32, which provide additional insulation. Under the mounting plate 19 there is a trough-shaped or plate-shaped substructure 49, on which the mounting plate rests with the interposition of a sealing flange 51 which engages under the opening edge 23. The substructure also has an opening in the area of the installation opening 16, but is underlaid there by a trough-shaped or bow-shaped part 48, on which the plate can be braced via a central bolt. As a result, the clamping force does not apply any bending stress to the mounting plate 19. On the substructure 49, several, for example six, centering projections 53 are provided on the inner circumference of its opening, which have the shape of inwardly directed tabs, which can be somewhat bent and preferably have a blunt, inwardly directed tip (FIG. 2), which the Heat conduction minimized. They cooperate with the hotplate edge 14 to center it directly on the substructure. The shielding section 32 extends down to the substructure 49 and shields the seal 26 and mounting plate 19 against radiation.

Fig. 3 und 4 zeigen eine Anordnung, die mit Fig. 1 und 2 mit Ausnahme der im folgenden beschriebenen Unterschiede übereinstimmt. Gleiche bzw. vergleichbare Teile tragen gleiche Bezugszeichen und werden nicht nochmals erläutert. Der Zwischenring 15 ist bei im wesentlichen gleicher Höhe h mit einer noch grösseren Breite b hergestellt, wobei jedoch seine übrige Gestalt der bereits beschriebenen entspricht. Die Dichtung 26 hat bei gleicher Grundform eine andere Gestalt und Abmessung der Rippen 30, die sich dichtlippenartig an den Einsatzring 31 anpressen. Der obere Schenkel 37 der Dichtung 26 hat eine äussere, C-förmig nach innen zurückgekippte Dichtlippe 45, die sich um die Aussenkante des Flansches 33 des Einsatzringes 31 herumlegt und somit eine grossflächige Anlage zwischen dem Aussenrand 41 des Zwischenringes und der Dichtung bildet, die sich bis in den Knick zum Mittelabschnitt 43 erstreckt. Hier ist zwar die Dichtung nicht vollständig gegen die Elektrokochplatte abgeschirmt; dies ist jedoch aufgrund der grösseren Breite des Zwischenringes vertretbar. Bei dieser Ausführungsform ist der Unterschied zwischen dem Durchmesser der Öffnung 16 und dem Aussendurchmesser der Elektrokochplatte noch grösser als bei der Ausführungsform nach Fig. und beträgt mehr als das Doppelte der von aussen sichtbaren Breite des Tragringes. Bei allen Ausführungen ist aber der Zwischenring vorteilhaft wesentlich breiter als der Tragring, insbesondere wenn man die von aussen sichtbaren Bereiche von Tragring und/oder Zwischenring betrachtet. Die Aussenflächen bzw. Kanten von Flansch 12, Tragring 13, Zwischenring 15 und Einbauplatte 19 liegen auf einer flach ansteigenden Kurve, deren maximale Steigung unter 50° liegt.3 and 4 show an arrangement which corresponds to FIGS. 1 and 2 except for the differences described below. The same or comparable parts have the same reference numerals and are not explained again. The intermediate ring 15 is made at substantially the same height h with an even greater width b, but its remaining shape corresponds to that already described. With the same basic shape, the seal 26 has a different shape and dimension of the ribs 30, which press against the insert ring 31 in the manner of a sealing lip. The upper leg 37 of the seal 26 has an outer sealing lip 45 which is tipped back inward in a C-shape and which lies around the outer edge of the flange 33 of the insert ring 31 and thus forms a large-area contact between the outer edge 41 of the intermediate ring and the seal, which forms extends into the bend to the middle section 43. Here the seal is not completely shielded against the electric hotplate; however, this is justifiable due to the larger width of the intermediate ring. In this embodiment, the difference between the diameter of the opening 16 and the outer diameter of the electric hotplate is even greater than in the embodiment according to FIG. And is more than twice the width of the support ring visible from the outside. In all versions, however, the intermediate ring is advantageously considerably wider than the supporting ring, especially when one considers the areas of the supporting ring and / or intermediate ring that are visible from the outside. The outer surfaces or edges of flange 12, support ring 13, intermediate ring 15 and mounting plate 19 lie on a gently rising curve, the maximum slope of which is below 50 °.

Der Abschirmungsabschnitt 32a reicht bis unter die Unterkante der Dichtung 26 und die Ebene der Unterkonstruktion 49, deren Zentriervorsprünge 53a mit dem Einsatzring 31a zusammenwirken. An dessen Innenseite sind am Umfang mehrere im Querschnitt L-förmige Blechteile 46 angeschweisst, die mit einem Schenkel an dem Abschirmungsabschnitt 32a des Einsatzringes 31a anliegen, während der andere, nach innen ragende Schenkel eine Lasche 47 mit abgerundetem oder spitzem Ende bildet. Sie reicht bis kurz vor den Kochplattenrand 14.The shielding section 32a extends below the lower edge of the seal 26 and the level of the substructure 49, the centering projections 53a of which interact with the insert ring 31a. On the inside of the circumference, a plurality of sheet-metal parts L-shaped in cross section L-shaped are welded, one leg abutting the shielding section 32a of the insert ring 31a, while the other leg projecting inwardly forms a tab 47 with a rounded or pointed end. It extends to just before the hotplate edge 14.

So erfolgt eine exakte Zentrierung der Elektrokochplatte 11 gegenüber dem Einsatzring und damit mittelbar gegenüber der Einbauplatte 19 und sowie über die Zentriervorsprünge 53a auch der Unterkonstruktion 49.The electric hotplate 11 is thus exactly centered with respect to the insert ring and thus indirectly with respect to the mounting plate 19 and, via the centering projections 53a, also the substructure 49.

Fig. 4 zeigt in Unteransicht einen der Zentriervorsprünge 53a, der mit der Aussenfläche des Einsatzringes 31a zusammenwirkt. Ferner ist gezeigt, dass wenigstens einer der Zentriervorsprünge als stufenförmiger Vorsprung 53b ausgebildet ist, dessen Mittelteil 55 in eine Ausnehmung 56 des Abschirmungsabschnittes 32a eingreift und den Einsatzring gegen Verdrehung sichert, während die zurückgesetzten Seitenteile 57 mit der Aussenfläche des Abschirmungsabschnittes zur Zentrierung zusammenwirken.FIG. 4 shows a bottom view of one of the centering projections 53a, which cooperates with the outer surface of the insert ring 31a. Furthermore, it is shown that at least one of the centering projections is designed as a step-shaped projection 53b, the middle part 55 of which engages in a recess 56 of the shielding section 32a and secures the insert ring against rotation, while the recessed side parts 57 cooperate with the outer surface of the shielding section for centering.

Die in Fig. 5 dargestellte Ausführungsform zeigt in Draufsicht einen Kochherd mit üblichen, im Abstand voneinander angeordneten Kochplatten 11, die in einer beispielsweise aus Blech bestehenden Herdplatte 60 eingebaut sind. Ein langgestreckt rechteckiger Bereich der Herdplatte 60 ist muldenförmig abgesenkt und in diesem Bereich ist, im wesentlichen bündig mit der Oberfläche der Herdplatte, eine aus Hartglas bestehende Einbauplatte 19a eingebaut. Sie hat zwei kreisförmige Öffnungen, deren Rand 23 strichliert angedeutet ist, die in Längsrichtung der Einbauplatte angeordnet sind und sich in ihrer Mitte etwas überschneiden, so dass sie miteinander verbunden sind. In diese Öffnungen sind zwei Kochplatten 11 üblicher Bauart eingebaut, deren Tragringe 13 sich auf einem Doppelring 15a abstützen, der in seiner Querschnittsform und den sonstigen Eigenschaften den Ringen 15 der Fig. 1 und 2 entsprechen kann, jedoch aus zwei Ringen besteht, die in der Mitte zusammenhängend ausgebildet sind. Der Doppelring 15a hat wie die Öffnung eine 8- bzw. brillenförmige Gestalt. Er kann aus zwei Ringen unterschiedlicher Grösse gebildet sein, in die dann auch zwei unterschiedlich grosse Kochplatten eingesetzt werden. Ebenso ist es möglich, den Verbindungsbereich anders zu gestalten, indem beispielsweise die entstehenden nach innen gerichteten Ausnehmungen 61 ausgerundet sind o.dgl.The embodiment shown in FIG. 5 shows a plan view of a cooker with conventional hot plates 11 which are arranged at a distance from one another and which are installed in a hot plate 60 made, for example, of sheet metal. An elongated rectangular area of the hotplate 60 is recessed in the shape of a trough and in this area, essentially flush with the surface of the hotplate, a built-in plate 19a made of tempered glass is installed. It has two circular openings, the edge 23 of which is indicated by dashed lines, which are arranged in the longitudinal direction of the mounting plate and overlap somewhat in the middle so that they are connected to one another. In these openings, two hotplates 11 of conventional design are installed, the support rings 13 of which are supported on a double ring 15a, which in its cross-sectional shape and the other properties can correspond to the rings 15 of FIGS. 1 and 2, but consists of two rings, which in the Middle are coherent. The double ring 15a, like the opening, has an 8 or glasses-like shape. It can be formed from two rings of different sizes, in which two hot plates of different sizes are then inserted. It is also possible to design the connection area differently, for example by rounding out the resulting inward recesses 61 or the like.

Anstelle des Bügels 48 bei den bisherigen Ausführungsformen ist ein durchgehender Tragbügel 48a vorgesehen, der von einer Schmalseite der Einbauplatte 19a zur anderen reicht und im seitlichen Mittelbereich (nahe den Einbuchtungen 61) Abstützungen 62 hat. Damit sorgt der Tragbügel mit dafür, dass die Einbauplatte 19a vor starken Belastungen oder Verbiegungen geschützt wird.Instead of the bracket 48 in the previous embodiments, a continuous support bracket 48a is provided, which extends from one narrow side of the mounting plate 19a to the other and has supports 62 in the lateral central region (near the indentations 61). The support bracket thus also ensures that the mounting plate 19a is protected against heavy loads or bending.

Hierbei sind die beiden Kochplatten 11 sehr dicht aneinander angeordnet, während bisher 5 cm Mindestabstand üblich waren. Beide Kochplatten haben je einen einzelnen, ggf. aber baulich zusammengefassten Schalter und können einzeln ein- und ausgeschaltet werden. Sie sind daher sowohl als Einzelkochplatten als auch als zusammenhängende Koch- oder Wärmeplatte verwendbar. Dafür ist es allerdings notwendig, dass ihre oberen Kochflächen genau miteinander fluchten, was bei den üblichen Blechkonstruktionen wegen belastungs- und wärmebedingter Formungen nicht möglich war. Die Einbauplatte 19a aus Glas sorgt jedoch dafür, dass diese Ebenheit eingehalten wird, insbesondere wenn der Bügel 48 verwendet wird. Der Doppelzwischenring 15a sorgt ebenfalls für die Versteifung und ermöglicht eine gute Ausrichtung der Kochplatten zueinander und sorgt ausserdem dafür, dass Wärmeausdehnungen, die über die Abmessung beider Kochplatten hinweg erhebliche Werte haben können, ausgeglichen werden.Here, the two hot plates 11 are arranged very close to one another, whereas previously a minimum distance of 5 cm was customary. Both hot plates each have a single, but possibly structurally combined switch and can be switched on and off individually. They can therefore be used both as single hot plates and as coherent hot plates. For this, however, it is necessary that their upper cooking surfaces are exactly aligned with each other, which was not possible with the usual sheet metal constructions due to stress and heat-related shapes. The glass mounting plate 19a, however, ensures that this flatness is maintained, especially when the bracket 48 is used. The double intermediate ring 15a likewise provides the stiffening and enables the hotplates to be aligned well with one another and also ensures that thermal expansions, which can have considerable values across the dimensions of both hotplates, are compensated for.

Die Einbauplatte 19a kann entweder in Herdplatten oder auch unabhängig in Arbeitsplatten eingesetzt werden. Besonders bevorzugt ist ein Herd mit vier normalen Kochplatten und einer Doppelkocheinheit nach Fig. 5.The mounting plate 19a can either be used in stovetops or independently in worktops. A stove with four normal hot plates and a double cooking unit according to FIG. 5 is particularly preferred.

Claims (8)

1. Mounting arrangement for an electric hotplate with a sheet metal support ring (13) surrounding it for fitting into an opening (17) of a preferably glass or ceramic mounting plate (19), with an intermediate ring (15), on which the support ring (13) is supported and whose outer rim (21) is supported on the mounting plate (19), the width of the intermediate ring (15) being greater than its height (h) between the seating of the outer rim (21) of support ring (13) thereon and its seating on the mounting plate (19) and in which the opening (17) has a larger diameter than the external diameter of hotplate (11), including the support ring (13), intermediate ring (15) covering the gap between the inner rim (23) of opening (17) and the hotplate external diameter, characterized in that the sheet metal intermediate ring (15) has a S-shaped cross-section with three outwardly downwardly bevelled portions (39, 41, 43), that between the steeper inner rim (39) and an also steeper outer rim (41) is provided a flatter middle portion (43), that the heights of the middle portion (43) and the inner rim together are at least as large as the height of the outer rim (41), that the sheet metal material of the intermediate ring (15) is thicker than that of the support ring (13) and the intermediate ring (15) made from a material differing from that of the support ring (13) has a surface coating (25) in the form of enamelling.
2. Mounting arrangement according to claim 1, characterized by an insert ring (31), which is completely covered by the intermediate ring (15) and has a substantially circular shielding portion (32) covering the opening rim (23) of opening (17) and means (34) for positioning a packing (26) in a position such that the sealing region (29) acting between mounting plate (19) and intermediate ring (15) is located close to the outer circumference of intermediate ring (15), the insert ring (31) preferably having a generally L-shaped cross-section with an outwardly projecting flange (33).
3. Mounting arrangement according to claim 2, characterized in that the packing (26) is a sealing ring surrounding the mounting opening (17) and having a substantially U-shaped cross-section and on whose upper leg (37) is provided the sealing region (29) and which preferably has inwardly directed ribs (30) centering the insert ring (31).
4. Mounting arrangement according to one of the preceding claims, characterized in that the width (b) of the intermediate ring (15) is two to four times larger than its height (h) in each case between the seating of the outer rim (21) of support ring (13) thereon and its seating on the mounting plate (19).
5. Mounting arrangement according to one of the preceding claims, characterized in that the intermediate ring (15) is a horizontally positioned, cross-sectionally flat, profiled sheet metal ring, whose inner rim (39) and outer rim (41) are steeper than 45°, the inwardly inclined, upwardly directed inner rim (39) forming a centering edge in conjunction with the support ring (13).
6. Mounting arrangement according to claim 2, characterized in that on the inside of insert ring (31) there are means for positioning and/or centering the hotplate (11) and preferably for the simultaneous positioning and/or centering of the hotplate (11) and the intermediate ring (15) and/or the packing (26) outwards and inwards and which are in particular constructed as inwardly directed, spot-welded, cross-sectionally approximately L-shaped tabs (47) or cams, the tabs (47) being constructed for punctiform engagement on the hotplate rim (14).
7. Mounting arrangement according to one of the claims 2 to 6, characterized in that insert rings (31) with different positioning means are provided for adapting hotplates of different diameters for a particular hole diameter in the mounting plate (19).
8. Mounting arrangement according to one of the claims 2 to 7, characterized in that a preferably plate or trough-like substructure (50) located below the mounting plate (19) has centering projections (53, 53a), which cooperate with the insert ring (31, 31a) or the hotplate rim (14) and preferably at least one centering projection (53b) engages in a recess of the insert ring to prevent turning.
EP83107628A 1982-08-13 1983-08-03 Built in assembly for an electric cooking plate with a support ring surrounding this plate Expired EP0101002B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT83107628T ATE38279T1 (en) 1982-08-13 1983-08-03 INSTALLATION ARRANGEMENT FOR AN ELECTRIC HOT PLATE WITH A SURROUNDING SUPPORT RING.

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE19823230085 DE3230085A1 (en) 1982-08-13 1982-08-13 Installation arrangement for an electric cooking plate with a support ring surrounding it
DE3230085 1982-08-13
DE3317624 1983-05-14
DE19833317624 DE3317624A1 (en) 1982-08-13 1983-05-14 Arrangement for building-in an electric cooking plate

Publications (3)

Publication Number Publication Date
EP0101002A2 EP0101002A2 (en) 1984-02-22
EP0101002A3 EP0101002A3 (en) 1985-04-17
EP0101002B1 true EP0101002B1 (en) 1988-10-26

Family

ID=25803728

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83107628A Expired EP0101002B1 (en) 1982-08-13 1983-08-03 Built in assembly for an electric cooking plate with a support ring surrounding this plate

Country Status (9)

Country Link
US (1) US4491722A (en)
EP (1) EP0101002B1 (en)
JP (1) JPS5949716A (en)
AU (1) AU566132B2 (en)
CA (1) CA1199052A (en)
DE (2) DE3317624A1 (en)
ES (1) ES286394Y (en)
GR (1) GR78919B (en)
YU (1) YU44857B (en)

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US4888470A (en) * 1986-08-26 1989-12-19 E.G.O. Elektro-Gerate Blanc U. Fischer Sealed electric hotplate
GB2194720B (en) * 1986-08-26 1989-12-20 Ego Elektro Blanc & Fischer Sealed electric hotplate
US4755655A (en) * 1986-12-04 1988-07-05 General Electric Company Thermal protection arrangement for solid disk glass cooktop
FR2609160A1 (en) * 1986-12-26 1988-07-01 Bene Benthor Sa Domestic cooking appliance having a support plate made of synthetic or organic material
EP0279367A3 (en) * 1987-02-18 1989-07-26 E.G.O. Elektro-Geräte Blanc u. Fischer Cooking appliance
DE3824746A1 (en) * 1988-07-21 1990-01-25 Ego Elektro Blanc & Fischer ELECTRIC COOKING PLATE
DE4028362A1 (en) * 1990-09-06 1992-03-12 Ego Elektro Blanc & Fischer ELECTRIC COOKING DEVICE WITH AN ELECTRIC COOKING PLATE
DE4114539A1 (en) * 1991-05-04 1992-11-05 Ego Elektro Blanc & Fischer Electric cooker with hotplate - has latter supported on broad ring which can be replaced for adaptation of standard hotplate body to differently dimensioned apertures in hob
US5752131A (en) * 1993-06-25 1998-05-12 Canon Kabushiki Kaisha Developing apparatus with a removable sealing film and process cartridge and image forming apparatus including such a developing apparatus
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US10827878B2 (en) * 2016-10-25 2020-11-10 Gmg Products, Llc. Pizza oven accessory for barbecue grill

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Also Published As

Publication number Publication date
DE3378329D1 (en) 1988-12-01
JPH0311373B2 (en) 1991-02-15
JPS5949716A (en) 1984-03-22
ES286394U (en) 1986-03-01
GR78919B (en) 1984-10-02
DE3317624A1 (en) 1984-11-15
CA1199052A (en) 1986-01-07
AU1793383A (en) 1984-02-16
ES286394Y (en) 1986-10-01
EP0101002A2 (en) 1984-02-22
US4491722A (en) 1985-01-01
EP0101002A3 (en) 1985-04-17
AU566132B2 (en) 1987-10-08
YU44857B (en) 1991-04-30
YU168383A (en) 1985-12-31

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