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EP0136655A2 - Electric cooking plate - Google Patents

Electric cooking plate Download PDF

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Publication number
EP0136655A2
EP0136655A2 EP84111456A EP84111456A EP0136655A2 EP 0136655 A2 EP0136655 A2 EP 0136655A2 EP 84111456 A EP84111456 A EP 84111456A EP 84111456 A EP84111456 A EP 84111456A EP 0136655 A2 EP0136655 A2 EP 0136655A2
Authority
EP
European Patent Office
Prior art keywords
hotplate
heating
electric
heating zones
connecting means
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP84111456A
Other languages
German (de)
French (fr)
Other versions
EP0136655A3 (en
EP0136655B1 (en
Inventor
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
Application filed by EGO Elektro Gerate Blanc und Fischer GmbH filed Critical EGO Elektro Gerate Blanc und Fischer GmbH
Priority to AT84111456T priority Critical patent/ATE35759T1/en
Publication of EP0136655A2 publication Critical patent/EP0136655A2/en
Publication of EP0136655A3 publication Critical patent/EP0136655A3/xx
Application granted granted Critical
Publication of EP0136655B1 publication Critical patent/EP0136655B1/en
Expired legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/68—Heating arrangements specially adapted for cooking plates or analogous hot-plates
    • H05B3/70—Plates of cast metal

Definitions

  • Electric hot plate according to the preamble of claim 1 have become known from DE-GM 81 03 701. They have an oval shape in plan view and a common heating system with inserted electrical heating resistors on their underside. They are used to heat elongated cooking or roasting dishes.
  • Circular hot plates are also known, which consist of separate or connected, heated rings.
  • the CH-PS 187 383 shows the connection of these rings by a sheet metal strip with a stretch bead.
  • the object of the invention is to provide an electric hotplate made of cast material which is more flexible with regard to the adaptation to different cooking vessels and tasks and which, with a sufficient service life, enables good efficiency.
  • the hotplate body has a parting line in the intermediate area between the two heating zones and the two hotplate body parts are connected to one another by a connecting means which allows a certain mobility, the efficiency is further improved. Nevertheless, the two cooking surfaces are exactly aligned with each other, so that a cooking vessel standing on both heating zones has good thermal contact.
  • the connecting means can maintain this orientation, that is, as far as possible not allow vertical displacement in the area of the connecting joint and also prevent the two cooking surfaces from tilting towards one another.
  • the intermediate area between the two heating zones is particularly preferably made of relatively thick cast material, so that there is no fear of warping of the cast body in this area.
  • an electric hotplate 11 which has a hotplate body 12 which is made of cast material, namely cast iron.
  • the hotplate body is made of a common cast body, which has the elongated shape shown in FIGS. 1 and 2, and is composed in plan view of two equal-sized arcs and straight lines connecting them.
  • the hotplate body is constructed like two circular hotplates arranged next to one another with a double concave intermediate area 24 which connects the two circular heating zones 17, 18 to one another.
  • the zones 17, 18 are identical, but mirror images of each other, and have a common upper flat cooking surface 15.
  • heating resistors 22 are embedded in an insulating investment material in spiral grooves 21, each of which occupies a heating ring region 19, which forms an unheated central zone 20 surrounds.
  • Each circular heating ring region 19 is surrounded by a downward-facing edge 23, which is adjoined in the upper outer part by a projecting flange 35.
  • the intermediate area 24 between the two heating zones 17, 18 is plate-shaped and consists of relatively thick cast material of approximately 10 mm thickness. The minimum distance between the edges 23 is 1 to 3 cm (dimension a).
  • a ring or upper case edge 30 made of stainless steel with its inner portion 31 is pressed around the entire hotplate body and has the cross section of a has inverted V or U and is supported with its top 32 on the bottom of the flange 35.
  • An outer section directed obliquely outwards and downwards usually reaches over a raised edge of a mounting plate and is supported on the latter. This enables a dense installation of the hotplate.
  • each heating zone there is a temperature limiter 33 which senses the temperature of the hotplate and protects each of the hotplate halves independently of one another against excess temperature.
  • the hotplate is also controlled or regulated by two individually adjustable regulating or control devices 34, but can also be done by a common device with an optional switchover option.
  • the heating ring area 19 of each heating zone 17, 18 is covered by an end cover 38 resting on the edge 23, which is attached to a central pin 36 in the central zone 20.
  • Each heating zone has its own connection line.
  • the heating zones 17, 18 can be heated simultaneously or independently of one another without causing undue warping or damage to the hotplate body.
  • the massive construction of the intermediate area 24 contributes to this. Nevertheless, the efficiency of heating only one zone is surprisingly good.
  • a connecting means 28 is used, which, as can be seen from the detail in FIG. 5, consists of a sheet metal strip, for example made of stainless steel, into which a downward expansion bead 29 is stamped.
  • the parting line 25 In order not to allow the parting line 25 to become so large, it could be considerably narrower in the upper region when the bead is directed downward, or the bead could be directed upward and largely complete the parting line.
  • the connecting means 28 is connected to the upper rim 30 which surrounds the hotplate.
  • the upper rim 30 runs around the hotplate body and accordingly has an elongated, oval shape.
  • the connecting means 28 is attached to this upper fall edge, for example by spot welding or roll welding, and runs at the height of the upper region 32 of the upper fall edge, thus forming a web between the two essentially straight sections of the upper fall edge. This holds them together and presses them onto the hotplate body.
  • the connecting means could also, particularly in its design as a straight web 28a according to FIG. 6, be punched directly out of the material of the upper fall edge without an expansion bead and thus form a coherent unit therewith.
  • This version is selected if it is ensured that differences in longitudinal expansion can be accommodated at the ends of the hotplate or in the groove 26.
  • An embodiment without a groove 26 with an inverted V-shaped connecting means pressed onto the separating joint sides 37 can also be used.
  • the connecting means 28, 28a can absorb longitudinal deformations, but ensures that the flat cooking surface parts remain aligned with one another and that there are no vertical displacements that could lead to a step between the cooking surfaces and, in the case of a large-area cooking appliance, for example an elongated roasting pan, a gap between them would create him and one of the cooking surfaces. They also hinder an interlocking of the two cooking surfaces with one another, and possibly also angular movements of the cooking surfaces against one another, in particular in the embodiment according to FIG. 6.
  • the gap width of the parting line 25 should either be so large that it is possible to keep it clean from above, or the distance should be close to zero in order to prevent dirt from accumulating there. Since the temperatures are not very high in this area, a seal could be interposed there.

Landscapes

  • Baking, Grill, Roasting (AREA)
  • Cookers (AREA)
  • Registering, Tensioning, Guiding Webs, And Rollers Therefor (AREA)
  • Table Devices Or Equipment (AREA)
  • Insulated Conductors (AREA)
  • Resistance Heating (AREA)

Abstract

A cast material hotplate with heating resistors embedded in grooves on the bottom surface has an elongated oval shape and on the bottom surface two independent heating zones, which in each case contain substantially circular heating ring zones. In the intermediate area, the casting is separated by a separating gap and tightly interconnected by an inserted sheet metal strip, which is optionally provided with an expansion bead. The sheet metal strip ensures that the flat cooking surfaces are aligned with respect to one another and the double hotplate is suitable for individual cooking vessels, which can be placed on each of the two sides, and for large joint cooking vessels.

Description

Elektrokochplatteinach dem Oberbegriff des Anspruches 1 sind aus dem DE-GM 81 03 701 bekannt geworden. Sie haben eine in der Draufsicht ovale Form und an ihrer Unterseite eine gemeinsame Beheizung mit eingelegten elektrischen Heizwiderständen. Sie dienen zur Beheizung von langgestreckten Koch- oder Bratgefäßen.Electric hot plate according to the preamble of claim 1 have become known from DE-GM 81 03 701. They have an oval shape in plan view and a common heating system with inserted electrical heating resistors on their underside. They are used to heat elongated cooking or roasting dishes.

Es sind auch kreisrunde Kochplatten bekannt, die aus gesonderten oder zusammenhängenden, beheizten Ringen bestehen. Die CH-PS 187 383 zeigt die Verbindung dieser Ringe durch einen Blechstreifen mit Dehnungssicke.Circular hot plates are also known, which consist of separate or connected, heated rings. The CH-PS 187 383 shows the connection of these rings by a sheet metal strip with a stretch bead.

Aufgabe der Erfindung ist es, eine Elektrokochplatte aus Gußmaterial zu schaffen, die in bezug auf die Anpassung an unterschiedliche Kochgefäße und Aufgaben flexibler ist und bei ausreichender Standzeit einen guten Wirkungsgrad ermöglicht.The object of the invention is to provide an electric hotplate made of cast material which is more flexible with regard to the adaptation to different cooking vessels and tasks and which, with a sufficient service life, enables good efficiency.

Diese Aufgabe wird durch das Kennzeichen des Anspruches 1 gelöst.This object is achieved by the characterizing part of claim 1.

Es wurde bisher angenommen, daß zwei unabhängig beheizbare Heizzonen an einem Kochplattenkörper aus Gußmaterial nicht wirtschaftlich möglich seien, da die ungleichmäßigen Wärmespannungen den Kochplattenkörper gefährden und verwerfen und der Wirkungsgrad gering sei. Versuche mit dem Erfindungsgegenstand haben jedoch gezeigt, daß durch den massiven Zwischenbereich die Verwerfungsneigung sehr gering gehalten werden kann und der Wirkungsgrad auch bei Beheizung nur einer Heizzone recht gut ist. So ist die Kochplatte sehr variabel und kann ein oder zwei kleine Kochgefäße auch mit unterschiedlichen Temperaturen und Leistungen beheizen oder ein langgestrecktes Kochgefäß aufnehmen, das sehr gleichmäßig beheizt werden kann. Es handelt sich also praktisch um zwei runde Kochflächen, die jeweils auf der einen Seite durch einen unbeheizten Verbindungsteil in Richtung auf die andere Heizzone hin ergänzt ist. In der Praxis ergibt sich dann ein Kochplattenkörper, der in der Draufsicht von zwei Halbkreisen und sie verbindenden Geraden begrenzt ist. Es können aber auch andere Formen, beispielsweise eine ovale Form ohne gerade Ränder verwendet werden, die unter Umständen den Vorteil haben, daß ein die Kochplatte umgebender Oberfallrand überall kraftschlüssig angedrückt wird.It has previously been assumed that two independently heatable heating zones on a hotplate body made of cast material are not economically feasible since the uneven thermal stresses endanger and reject the hotplate body and the efficiency is low. Experiments with the subject matter of the invention have shown, however, that the massi In the intermediate area, the tendency to warp can be kept very low and the efficiency is quite good even if only one heating zone is heated. The hotplate is very variable and can heat one or two small cooking vessels with different temperatures and outputs or accommodate an elongated cooking vessel that can be heated very evenly. It is therefore practically two round cooking surfaces, each of which is supplemented on one side by an unheated connecting part in the direction of the other heating zone. In practice, this results in a hotplate body which is delimited in the top view by two semicircles and straight lines connecting them. However, other shapes, for example an oval shape without straight edges, can also be used, which may have the advantage that an upper case edge surrounding the hotplate is pressed on non-positively everywhere.

Wenn zusätzlich der Kochplattenkörper in dem zwischen den beiden Heizzonen liegenden Zwischenbereich eine Trennfuge hat und die beiden Kochplattenkörperteile durch ein eine gewisse Beweglichkeit zulassendes Verbindungsmittel miteinander verbunden sind, wird der Wirkungsgrad noch weiter verbessert. Trotzdem sind die beiden Kochflächen genau zueinander ausgerichtet, so daß ein auf beiden Heizzonen stehendes Kochgefäß jeweils guten Wärmekontakt hat. Das Verbindungsmittel kann diese Ausrichtung aufrechterhalten, also möglichst keine Vertikalverschiebung im Bereich der Verbindungsfuge zulassen und auch eine Kippung der beiden Kochflächen gegeneinander verhindert.If, in addition, the hotplate body has a parting line in the intermediate area between the two heating zones and the two hotplate body parts are connected to one another by a connecting means which allows a certain mobility, the efficiency is further improved. Nevertheless, the two cooking surfaces are exactly aligned with each other, so that a cooking vessel standing on both heating zones has good thermal contact. The connecting means can maintain this orientation, that is, as far as possible not allow vertical displacement in the area of the connecting joint and also prevent the two cooking surfaces from tilting towards one another.

Zwischen den Reglern oder Steuergeräten beider Heizzonen könnte eine elektrische oder mechanische Kopplung vorgesehen sein, um die Bedienung zu vereinfachen. Der Zwischenbereich zwischen den beiden Heizzonen besteht besonders bevorzugt aus relativ dickem Gußmaterial, so daß in diesem Bereich keine Eigenverwerfungen des Gußkörpers zu befürchten sind.An electrical or mechanical coupling could be provided between the controllers or control devices of both heating zones in order to simplify operation. The intermediate area between the two heating zones is particularly preferably made of relatively thick cast material, so that there is no fear of warping of the cast body in this area.

Weitere Merkmale von bevorzugten Weiterbildungen der Erfindungen gehen aus der Beschreibung und den Zeichnungen hervor, wobei diese Merkmale und die der Unteransprüche jeweils für sich allein oder zu mehreren in Form von Unterkombinationen bei einer Ausführungsform der Erfindung verwirklicht sein können. Ausführungsbeispiele der Erfindung sind in der Zeichnung dargestellt und werden im folgenden näher erläutert. Es zeigen:

  • Fig. 1 eine Draufsicht auf eine Elektrokochplatte,
  • Fig. 2 einen Längsschnitt durch die Kochplatte nach Figur 1,
  • Fig. 3 eine Darstellung nach Fig. 2 mit geschlitztem Kochplattenkörper,
  • Fig. 4 einen Querschnitt nach Linie IV in Figur 3 und
  • Fig. 5
  • und 6 zwei Details des Trennfugenbereiches.
Further features of preferred developments of the inventions emerge from the description and the drawings, these features and that of the subclaims being able to be realized individually or in groups in the form of subcombinations in one embodiment of the invention. Embodiments of the invention are shown in the drawing and are explained in more detail below. Show it:
  • 1 is a plan view of an electric hot plate,
  • 2 shows a longitudinal section through the hotplate according to FIG. 1,
  • 3 shows a representation according to FIG. 2 with slotted hotplate body,
  • Fig. 4 shows a cross section along line IV in Figure 3 and
  • Fig. 5
  • and 6 two details of the parting area.

In den Zeichnungen ist eine Elektrokochplatte 11 dargestellt, die einen Kochplattenkörper 12 aufweist, der aus Gußmaterial, und zwar aus Eisenguß besteht. Der Kochplattenkörper ist aus einem gemeinsamen Gußkörper hergestellt, der die in Fig. 1 und 2 gezeigte langgestreckte Form hat, und in der Draufsicht aus zwei gleichgroßen Kreisbögen und diese verbindenden Geraden zusammengesetzt ist.In the drawings, an electric hotplate 11 is shown which has a hotplate body 12 which is made of cast material, namely cast iron. The hotplate body is made of a common cast body, which has the elongated shape shown in FIGS. 1 and 2, and is composed in plan view of two equal-sized arcs and straight lines connecting them.

Die Länge entspricht etwa dem doppelten Kreisdurchmesser zuzüglich ca. 1 bis 3 cm. Der Kochplattenkörper ist aufgebaut wie zwei nebeneinander angeordnete kreisrunde Kochplatten mit einem doppelt konkaven Zwischenbereich 24, der die beiden kreisförmigen Heizzonen 17, 18 miteinander verbindet. Die Zonen 17, 18 sind identisch, aber spiegelbildlich zueinander ausgebildet und haben eine gemeinsame obere ebene Kochfläche 15. An jeder ihrer Unterseiten liegen in spiralförmigen Nuten 21 in einer isolierenden Einbettmasse eingebettet Heizwiderstände 22, die jeweils einen Heizringbereich 19 einnehmen, der eine unbeheizte Mittelzone 20 umgibt. Jeder kreisrunde Heizringbereich 19 ist von einem abwärts gerichteten Rand 23 umgeben, an den sich im oberen äußeren Teil ein vorragender Flansch 35 anschließt. Der Zwischenbereich 24 zwischen den beiden Heizzonen 17, 18 ist plattenförmig und besteht aus relativ dickem Gußmaterial von ca. 10 mm Dicke.Der Minimal-Abstand zwischen denRändern 23 beträgt 1 bis 3 cm (Maß a).The length corresponds to approximately twice the diameter of the circle plus approx. 1 to 3 cm. The hotplate body is constructed like two circular hotplates arranged next to one another with a double concave intermediate area 24 which connects the two circular heating zones 17, 18 to one another. The zones 17, 18 are identical, but mirror images of each other, and have a common upper flat cooking surface 15. On each of their undersides, heating resistors 22 are embedded in an insulating investment material in spiral grooves 21, each of which occupies a heating ring region 19, which forms an unheated central zone 20 surrounds. Each circular heating ring region 19 is surrounded by a downward-facing edge 23, which is adjoined in the upper outer part by a projecting flange 35. The intermediate area 24 between the two heating zones 17, 18 is plate-shaped and consists of relatively thick cast material of approximately 10 mm thickness. The minimum distance between the edges 23 is 1 to 3 cm (dimension a).

Auf den Rand 23 und den Rand des Zwischenbereiches 24 ist außen ein um den gesamten Kochplattenkörper umlaufender Ring oder Oberfallrand 30 aus rostfreiem Stahl mit seinem Innenabschnitt 31 aufgepresst, der den Querschnitt eines umgekehrten V oder U hat und sich mit seiner Oberseite 32 an der Unterseite des Flansches 35 abstützt.On the edge 23 and the edge of the intermediate region 24, a ring or upper case edge 30 made of stainless steel with its inner portion 31 is pressed around the entire hotplate body and has the cross section of a has inverted V or U and is supported with its top 32 on the bottom of the flange 35.

Ein schräg nach außen und unten gerichteter Außenabschnitt greift normalerweise über einen hochstehenden Rand einer Einbauplatte und stützt sich auf dieser ab. Dadurch ist ein dichter Kochplatteneinbau möglich.An outer section directed obliquely outwards and downwards usually reaches over a raised edge of a mounting plate and is supported on the latter. This enables a dense installation of the hotplate.

Im Bereich der unbeheizten Mittelzone 20 jeder Heizzone ist ein Temperaturbegrenzer 33 angeordnet, der die Temperatur der Kochplatte abfühlt und jede der Kochplattenhälften unabhängig voneinander gegen übertemperatur schützt. Auch die Steuerung bzw. Regelung der Kochplatte erfolgt durch zwei einzeln einstellbare Regel- oder Steuergeräte 34, kann aber auch durch ein gemeinsames Gerät mit wahlweiser Umschaltmöglichkeit erfolgen. Der Heizringbereich 19 jeder Heizzone 17, 18 ist von einem auf dem Rand 23 aufliegenden Abschlußdeckel 38 abgedeckt, der an einem Mittelbolzen 36 in der Mittelzone 20 befestigt ist. Jede Heizzone hat eine eigene Anschlußleitung.In the area of the unheated middle zone 20 of each heating zone there is a temperature limiter 33 which senses the temperature of the hotplate and protects each of the hotplate halves independently of one another against excess temperature. The hotplate is also controlled or regulated by two individually adjustable regulating or control devices 34, but can also be done by a common device with an optional switchover option. The heating ring area 19 of each heating zone 17, 18 is covered by an end cover 38 resting on the edge 23, which is attached to a central pin 36 in the central zone 20. Each heating zone has its own connection line.

Es hat sich gezeigt, daß die Heizzonen 17, 18 gleichzeitig oder unabhängig voneinander beheizt werden können, ohne daß es zu unzulässigen Verwerfungen oder Beschädigungen des Kochplattenkörpers kommt. Dazu trägt die massive Bauweise des Zwischenbereiches 24 bei. Trotzdem ist der Wirkungsgrad bei der Beheizung nur einer Zone erstaunlich gut.It has been shown that the heating zones 17, 18 can be heated simultaneously or independently of one another without causing undue warping or damage to the hotplate body. The massive construction of the intermediate area 24 contributes to this. Nevertheless, the efficiency of heating only one zone is surprisingly good.

Wie Fig. 3 und 4 zeigt, kann bei besonderen Anforderungen an den Wirkungsgrad und Spannungsempfindlichkeit des Gußmaterials bei einseitigem Betrieb der gemeinsame Guß-Kochplattenkörper entsprechend Fig. 1 und 2 im Zwischenbereich 24 durch eine Trennfuge 25 getrennt sein. In jede Trennfugenseite 37 ist eine relativ tiefe horizontale Nut 26 eingefräst, beispielsweise zusammen mit der Trennfuge 25 durch einen Fräser mit kreuzförmigem Schnittbild. In dieser Nut ist jeweils ein Verbindungsmittel 28 eingesetzt, das wie aus dem Detail von Fig. 5 hervorgeht, aus einem Blechstreifen, z.B. aus rostfreiem Stahl, besteht, in den eine nach unten gerichtete Dehnungssicke 29 eingeprägt ist. Um die Trennfuge 25 nicht so groß werden zu lassen, könnte sie bei nach unten gerichteter Sicke im oberen Bereich wesentlich schmaler sein oder die Sicke könnte nach oben gerichtet sein und dabei die Trennfuge weitgehend abschließen.As shown in FIGS. 3 and 4, in the case of special demands on the efficiency and stress sensitivity of the casting material, the joint casting 1 and 2 in the intermediate area 24 by a parting line 25. A relatively deep horizontal groove 26 is milled into each joint side 37, for example together with the joint 25 by a milling cutter with a cross-shaped sectional view. In this groove, a connecting means 28 is used, which, as can be seen from the detail in FIG. 5, consists of a sheet metal strip, for example made of stainless steel, into which a downward expansion bead 29 is stamped. In order not to allow the parting line 25 to become so large, it could be considerably narrower in the upper region when the bead is directed downward, or the bead could be directed upward and largely complete the parting line.

Aus Fig. 4 ist zu erkennen, daß bei geschlitzter Kochplattenausführung das Verbindungsmittel 28 mit dem Oberfallrand 30 verbunden ist, der die Kochplatte umgibt. Der Oberfallrand 30 läuft um den Kochplattenkörper um und hat dementsprechend eine langgestreckt, ovale Form. Das Verbindungsmittel 28 ist an diesem Oberfallrand angebracht, beispielsweise durch Punkt- oder Rollschweißung und verläuft in Höhe des oberen Bereiches 32 des Oberfallrandes, bildet also einen Steg zwischen den beiden im wesentlichen geraden Abschnitten des Oberfallrandes. Dadurch werden diese zusammengehalten und an den Kochplattenkörper angepresst.From Fig. 4 it can be seen that in the case of a slotted hotplate design, the connecting means 28 is connected to the upper rim 30 which surrounds the hotplate. The upper rim 30 runs around the hotplate body and accordingly has an elongated, oval shape. The connecting means 28 is attached to this upper fall edge, for example by spot welding or roll welding, and runs at the height of the upper region 32 of the upper fall edge, thus forming a web between the two essentially straight sections of the upper fall edge. This holds them together and presses them onto the hotplate body.

Das Verbindungsmittel könnte auch, insbesondere in seiner Ausgestaltung als gerader Steg 28a nach Fig. 6 ohne Dehnungssicke unmittelbar aus dem Material des Oberfallrandes ausgestanzt sein und mit diesem somit eine zusammenhängende Einheit bilden.The connecting means could also, particularly in its design as a straight web 28a according to FIG. 6, be punched directly out of the material of the upper fall edge without an expansion bead and thus form a coherent unit therewith.

Diese Ausführung wird gewählt, wenn dafür gesorgt ist, daß Längendehnungsunterschiede an den Enden der Kochplatte oder in der Nut 26 aufgenommen werden können. Auch eine Ausführung ohne Nut 26 mit einem an die Trennfugenseiten 37 angepressten, umgekehrt V-förmigen Verbindungsmittel ist brauchbar.This version is selected if it is ensured that differences in longitudinal expansion can be accommodated at the ends of the hotplate or in the groove 26. An embodiment without a groove 26 with an inverted V-shaped connecting means pressed onto the separating joint sides 37 can also be used.

Das Verbindungsmittel 28, 28a kann Längsverformungen aufnehmen, sorgt aber dafür, daß die ebenen Kochflächenteile zueinander ausgerichtet bleiben und keine vertikalen Verschiebungen auftreten, die zu einer Stufe zwischen den Kochflächen führen könnten und bei einem daraufgestellten großflächigen Kochgerät, beispielsweise einem langgestreckten Bräter, einen Spalt zwischen ihm und einer der Kochflächen entstehen lassen würde. Sie behindern außerdem eine Verschränkung der beiden Kochflächen gegeneinander, sowie ggf. auch Winkelbewegungen der Kochflächen gegeneinander, insbesondere in der Ausführung nach Fig. 6.The connecting means 28, 28a can absorb longitudinal deformations, but ensures that the flat cooking surface parts remain aligned with one another and that there are no vertical displacements that could lead to a step between the cooking surfaces and, in the case of a large-area cooking appliance, for example an elongated roasting pan, a gap between them would create him and one of the cooking surfaces. They also hinder an interlocking of the two cooking surfaces with one another, and possibly also angular movements of the cooking surfaces against one another, in particular in the embodiment according to FIG. 6.

Die Spaltbreite der Trennfuge 25 sollte entweder so groß sein, daß es möglich ist, sie von oben her sauber zu halten oder der Abstand sollte gegen Null gehen, um zu vermeiden, daß sich dort Schmutz ansammelt. Da in diesem Bereich die Temperaturen nicht sehr hoch sind, könnte dort eine Dichtung zwischengeschaltet werden.The gap width of the parting line 25 should either be so large that it is possible to keep it clean from above, or the distance should be close to zero in order to prevent dirt from accumulating there. Since the temperatures are not very high in this area, a seal could be interposed there.

Claims (10)

1. Elektrokochplatte mit einem Kochplattenkörper (12) aus Gußmaterial, dessen Beheizung aus an der Unterseite des Kochplattenkörpers in Nuten (21) eingebetteten elektrischen Heizwiderständen (22) besteht, und dessen obere, im wesentlichen ebene Kochfläche (15, 16) eine langgestreckte Form hat, dadurch gekennzeichnet, daß die Beheizung aus zwei nebeneinander, in Abstand voneinander, angeordneten, gesondert beheizbaren Heizzonen (17, 18) besteht, zwischen denen ein unbeheizter Zwischenbereich (24) des Kochplattenkörpers (12) liegt.1. Electric hotplate with a hotplate body (12) made of cast material, the heating of which consists of electrical heating resistors (22) embedded in grooves (21) on the underside of the hotplate body, and whose upper, essentially flat cooking surface (15, 16) has an elongated shape , characterized in that the heating consists of two, separately spaced, separately heatable heating zones (17, 18), between which there is an unheated intermediate region (24) of the hotplate body (12). 2. Elektrokochplatte nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die beiden Heizzonen (17, 18) zueinander spiegelbildlich, im übrigen aber identisch ausgebildet sind, wobei vorzugsweise die kreisrunden bzw. kreisringförmigen Heizzonen (17, 18) je von einem umlaufenden, vertikalen Rand (23) umgeben sind.2. Electric hotplate according to one of the preceding claims, characterized in that the two heating zones (17, 18) are mirror images of each other, but otherwise are identical, preferably the circular or annular heating zones (17, 18) each of a circumferential, vertical Edge (23) are surrounded. 3. Elektrokochplatte nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß der Zwischenbereich (24) zwischen den Heizzonen (17, 18) aus relativ dickem Gußmaterial, in einer Dicke zwischen 7 und 15 mm, vorzugsweise in der Größenordnung von 10 mm besteht, und insbesondere der Abstand zwischen den Rändern (23) der Heizzonen (17, 18) zwischen 1 und 3 cm beträgt.3. Electric hotplate according to claim 1 or 2, characterized in that the intermediate region (24) between the heating zones (17, 18) made of relatively thick cast material, in a thickness between 7 and 15 mm, preferably in the order of 10 mm, and in particular the distance between the edges (23) of the heating zones (17, 18) is between 1 and 3 cm. 4. Elektrokochplatte nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß der Kochplattenkörper (12) in der Draufsicht von zwei Halbkreisen und zwei sie verbindenden Geraden begrenzt ist.4. Electric hotplate according to one of the preceding claims, characterized in that the hotplate body (12) is limited in plan view by two semicircles and two straight lines connecting them. 5. Elektrokochplatte nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß jede Heizzone (17, 18) Kochplattenteil (13, 14) eine eigene Steuerung bzw. Regelung (34) sowie ggf. einen eigenen Temperaturbegrenzer (33) aufweist.5. Electric hotplate according to one of the preceding claims, characterized in that each heating zone (17, 18) hotplate part (13, 14) has its own control or regulation (34) and optionally its own temperature limiter (33). 6. Elektrokochplatte nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß der Kochplattenkörper (11) in dem zwischen den beiden Heizzonen (17, 18) liegenden Zwischenbereich eine Trennfuge (25) aufweist und die beiden Kochplattenkörperteile (13, 14) durch ein eine gewisse Beweglichkeit zulassendes Verbindungsmittel (28, 28a) miteinander verbunden sind.6. Electric hotplate according to one of the preceding claims, characterized in that the hotplate body (11) in the intermediate region between the two heating zones (17, 18) has a parting line (25) and the two hotplate body parts (13, 14) by a certain Connecting means (28, 28a) permitting mobility are connected to one another. 7. Elektrokochplatte nach Anspruch 6, dadurch gekennzeichnet, daß die beiden Kochplattenteile (13,14) durch Auftrennung des gemeinsam gegossenen Gußkörpers gebildet sind.7. Electric hotplate according to claim 6, characterized in that the two hotplate parts (13, 14) are formed by separating the cast body which is cast together. 8. Elektrokochplatte nach Anspruch 6 oder 7, dadurch gekennzeichnet, daß das Verbindungsmittel (28, 28a) in je einer parallel zur Kochfläche (15, 16) verlaufenden Nut (26) geführt ist, wobei vorzugsweise die Trennfuge (25) und die Nut (26) zusammen einen kreuzförmigen Querschnitt ergeben.8. Electric hotplate according to claim 6 or 7, characterized in that the connecting means (28, 28a) is guided in a groove (26) running parallel to the cooking surface (15, 16), preferably the parting line (25) and the groove ( 26) together result in a cross-shaped cross section. 9. Elektrokochplatte nach einem der Ansprüche 6 bis 8, dadurch gekennzeichnet, daß das Verbindungsmittel (28, 28a) ein vorzugsweise mit einer Dehnungssicke (29) versehener Blechstreifen ist.9. Electric hotplate according to one of claims 6 to 8, characterized in that the connecting means (28, 28a) is a sheet metal strip preferably provided with an expansion bead (29). 10. Elektrokochplatte nach einem der Ansprüche 6 bis 9, dadurch gekennzeichnet, daß das Verbindungsmittel (28, 28a) an einen die Gesamtkochplatte (11) umgebenden Oberfallrand (30) anschließt und vorzugsweise mit diesem verbunden ist, wobei es insbesondere in der Höhe der oberen Kante (32) des Oberfallrandes (30) verläuft.10. Electric hotplate according to one of claims 6 to 9, characterized in that the connecting means (28, 28a) adjoins and is preferably connected to an upper case edge (30) surrounding the entire hotplate (11), it being in particular at the height of the upper one Edge (32) of the upper rim (30) runs.
EP84111456A 1983-10-06 1984-09-26 Electric cooking plate Expired EP0136655B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84111456T ATE35759T1 (en) 1983-10-06 1984-09-26 ELECTRIC HOTPLATE.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3336311A DE3336311A1 (en) 1983-10-06 1983-10-06 ELECTRIC COOKING PLATE
DE3336311 1983-10-06

Publications (3)

Publication Number Publication Date
EP0136655A2 true EP0136655A2 (en) 1985-04-10
EP0136655A3 EP0136655A3 (en) 1985-07-03
EP0136655B1 EP0136655B1 (en) 1988-07-13

Family

ID=6211115

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84111456A Expired EP0136655B1 (en) 1983-10-06 1984-09-26 Electric cooking plate

Country Status (6)

Country Link
US (1) US4611112A (en)
EP (1) EP0136655B1 (en)
AT (1) ATE35759T1 (en)
DE (2) DE3336311A1 (en)
ES (1) ES290831Y (en)
YU (1) YU45909B (en)

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US5978431A (en) * 1995-08-03 1999-11-02 British Nuclear Fuels Nuclear fuel pellets
US6130096A (en) * 1995-06-06 2000-10-10 British Nuclear Fuels Plc Chemical complexes

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US5397873A (en) * 1993-08-23 1995-03-14 Emerson Electric Co. Electric hot plate with direct contact P.T.C. sensor
US5855163A (en) * 1996-12-10 1999-01-05 Demars; Robert A. Coffee brewer
US20060278091A1 (en) * 2005-04-06 2006-12-14 Rutigliano Gerard A Dual coffee maker
US9320293B2 (en) * 2008-06-06 2016-04-26 Gold Medal Products Company Popcorn kettle
US10136664B2 (en) 2016-07-11 2018-11-27 Gold Medal Products Company Popcorn popping machines and methods for different types of popcorn kernels and different popped popcorn types
DE102017211100A1 (en) 2017-06-29 2019-01-03 E.G.O. Elektro-Gerätebau GmbH hotplate

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Also Published As

Publication number Publication date
ATE35759T1 (en) 1988-07-15
DE3336311A1 (en) 1985-04-18
YU45909B (en) 1992-09-07
YU170484A (en) 1988-02-29
US4611112A (en) 1986-09-09
DE3472746D1 (en) 1988-08-18
EP0136655A3 (en) 1985-07-03
ES290831Y (en) 1986-12-16
EP0136655B1 (en) 1988-07-13
ES290831U (en) 1986-04-16

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