EP2649377B2 - Carrier for food to be cooked - Google Patents

Carrier for food to be cooked Download PDF

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Publication number
EP2649377B2
EP2649377B2 EP11793401.8A EP11793401A EP2649377B2 EP 2649377 B2 EP2649377 B2 EP 2649377B2 EP 11793401 A EP11793401 A EP 11793401A EP 2649377 B2 EP2649377 B2 EP 2649377B2
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EP
European Patent Office
Prior art keywords
food
cooked
carrier
layer
heating
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.)
Active
Application number
EP11793401.8A
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German (de)
French (fr)
Other versions
EP2649377B1 (en
EP2649377A1 (en
Inventor
Ingo Bally
Alexander Dinkel
Wolfgang Fuchs
Claudia Leitmeyr
Angelika Namberger
Michael Reindl
Klemens Roch
Wolfgang Schnell
Matthias Sorg
Günter ZSCHAU
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BSH Hausgeraete GmbH
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BSH Hausgeraete GmbH
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Filing date
Publication date
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Application filed by BSH Hausgeraete GmbH filed Critical BSH Hausgeraete GmbH
Publication of EP2649377A1 publication Critical patent/EP2649377A1/en
Publication of EP2649377B1 publication Critical patent/EP2649377B1/en
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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
    • F24C15/16—Shelves, racks or trays inside ovens; Supports therefor
    • F24C15/166—Shelves, racks or trays inside ovens; Supports therefor with integrated heating means

Definitions

  • the invention relates to a food support which has a base body on the upper side of which there is a food support surface and which has at least one heater for heating the food support surface (actively heatable food support).
  • a food support which has a base body on the upper side of which there is a food support surface and which has at least one heater for heating the food support surface (actively heatable food support).
  • an electric oven with a dividing plate for dividing a cooking space of the oven is known, the dividing plate being equipped with two electric heating elements which can form a lower heat of an upper cooking space area and an upper heat of a lower cooking space area. Together with the top and bottom heat permanently installed in the oven, the two cooking compartment areas can be controlled almost independently.
  • an electrically heatable baking pad is known, the baking pad having an essentially closed sheet metal body in which at least one heating element is arranged.
  • a temperature on the support surface for the food to be cooked can be evened out. Consequently, an uneven introduction of heat, e.g. including undesired temperature peaks, into a cooking product lying on the cooking product support surface can be avoided.
  • These temperature peaks can occur, for example, in an area of the food support surface directly above a heating track of the surface heating, in the area of cross-sectional narrowing of a heating track, due to locally different environmental conditions and/or due to manufacturing tolerances.
  • the surface heating can in particular be a heater which, e.g. in contrast to a tubular heater, generates heat over a large area.
  • the surface heating can, in particular, cover or cover a large part of an upper side and/or underside of the food support and consequently heat the surface directly.
  • a flat design of the food support is also achieved thanks to the surface heating.
  • the base body can in particular be a self-supporting part of the food support which determines the basic shape of the food support.
  • the material of the at least one heat spreading layer (the surface heating and/or the base body) is a material with good thermal conductivity and in particular has a thermal conductivity of more than 100 W/(m*K).
  • at least one heat spreading layer has aluminum and/or copper.
  • the aluminum and/or copper may be present, for example, as a pure material (e.g., 95% purity or greater) or as an alloy.
  • the surface heating has the at least one heat spreading layer
  • the surface heating can have in particular a heating conductor layer for generating heat when current is passed through and at least one heat spreading layer.
  • the at least one heat spreading layer is preferably arranged between the heating conductor layer and the substrate or base body to be heated.
  • the heating conductor layer can have a structure in the form of at least one (elongated or band-shaped) heating track. If the heat spreading layer is an electrically conductive layer, the surface heating can have an electrically insulating insulation layer between the heating conductor layer and the heat spreading layer.
  • the heating conductor layer of the surface heating consists of CrNi.
  • a thickness of the heating conductor layer between 1 and 300 micrometers, in particular between 25 and 50 micrometers, is preferred.
  • the material of the heating conductor layer is not limited to CrNi and can also include silver or carbon nanotubes, etc., for example.
  • the insulating layer preferably comprises a dielectric material, preferably aluminum oxide.
  • a thickness of the insulation layer between 150 and 500 microns, in particular between 250 and 300 microns, is preferred.
  • top coat can be applied, in particular as the outermost layer of the surface heating, which, for example, offers improved protection against the ingress of moisture, against mechanical abrasion and/or against chemical effects.
  • a template e.g. bronze surfaces can be sprayed on, which contact the heating track and to which electrical lines can be attached, e.g. welded or pressed.
  • At least the heating conductor layer has been applied using a plasma process.
  • a plasma process advantageous.
  • At least the heating conductor layer can be applied to the base body by means of plasma spraying.
  • a plasma torch can be used for plasma spraying.
  • Plasma spraying has the advantage that it is easy to carry out and enables the layers produced to be highly precise.
  • many different materials can be plasma sprayed.
  • the substrate or the base body hardly heats up during the coating (up to a maximum of 200°C), which is also advantageous.
  • the application of at least the heating conductor layer is not limited to a plasma process and can also be applied in a screen printing process, etc., for example.
  • the base body is a multi-layer body or multi-layer body which has at least one heat-spreading layer or layer and which is formed by a layer of stainless steel, glass or glass-ceramic in the area of the food support surface. Due to the fact that the at least one heat spreading layer is now integrated into the base body, the surface heating can in principle be designed without or with only reduced consideration of heat spreading.
  • the layer of stainless steel, glass or glass-ceramic enables good mechanical (e.g. against stress from cutlery, etc.), thermal (e.g. against surface heating) and chemical (e.g. against a cleaning agent) resistance.
  • the base body is a multi-layer body or multi-layer body whose surface for the food to be cooked is (directly) formed by the layer of stainless steel, glass or glass ceramic.
  • the base body can be equipped with a corresponding coating in the area of the food support surface.
  • the coating can ensure good mechanical protection of the surface, in particular through a Mohs degree of hardness of at least 6.0.
  • the coating can also be as chemically inert as possible.
  • the support surface can be provided with an easy-to-clean layer, which in particular can also be hard and/or as chemically inert as possible.
  • the heating conductor layer can be applied directly to the base body, especially if the base body is an electrically non-conductive base body on its side facing the surface heating, e.g. with enamel or made of glass (especially borosilicate glass) or glass ceramic.
  • the heating conductor layer can be applied indirectly via an electrically insulating insulation layer to the base body to be heated, in particular if the base body is an electrically conductive base body on its side facing the surface heating.
  • the base body to be heated can be provided with a camber and/or embossing(s) to suppress thermal mismatches between the surface heating and the base body to be heated.
  • the material of the at least one heat spreading layer (the surface heating and/or the base body) is a material with good thermal conductivity and in particular has a thermal conductivity of more than 100 W/(m*K).
  • the material of the at least one heat spreading layer can include metal in particular.
  • at least one heat spreading layer has aluminum and/or copper.
  • the aluminum and/or copper may be present, for example, as a pure material (e.g., 95% purity or greater) or as an alloy.
  • the food support can in particular have several surface heating systems with different structures or layouts (e.g. with a different guide and/or geometry of their heating track).
  • the surface heating can be adapted to various contact options (e.g. on the side, at the back, in the middle, etc.), e.g. with regard to short cable lengths to an electrical connection element or with regard to a mechanical pressing solution.
  • the heating layout can be designed in such a way that the smallest possible electrical potential difference occurs between different sections of a heating track. This enables reduced requirements for electrical insulation between the heating track sections, e.g. in terms of distance, choice of material, manufacturing tolerances, etc.
  • the support surface for the food to be cooked is formed by at least part of a depression on the upper side of the food support.
  • the indentation can in particular be a bowl-shaped indentation.
  • the support surface for the food to be cooked can in particular have a pouring edge or bevel.
  • At least one surface heater extends from a bottom of the depression up to and including a side edge of the depression.
  • At least one first panel heater is located on a bottom of the recess and at least one second panel heater is located on a side edge of the recess. These panel heaters are particularly easy to apply.
  • the food support has a two-part housing with a housing top part and a housing bottom part (housing base), the housing top part and the housing bottom part being tightly connected to one another. and are mounted laterally displaceable to each other.
  • the upper part of the housing has the food support surface on its upper side. This easy-to-install, two-part housing protects the surface heating and improves cleanability.
  • the upper housing part and the lower housing part are mounted laterally displaceable relative to one another, at least in certain areas. Due to the laterally displaceable mounting, a different thermal expansion of the upper part of the housing and the lower part of the housing can be at least partially compensated, which reduces thermally induced stresses and thus the risk of crack formation and/or delamination.
  • connection between the upper part of the housing and the upper part of the housing is therefore preferably designed in such a way that relative, in particular lateral, movements that can occur due to different temperature expansions of the housing parts relative to one another are at least partially absorbed.
  • the connection can be made, for example, by gluing, flanging, etc. Furthermore, such a structure brings about a thermal decoupling between the housing parts.
  • the upper housing part and the lower housing part form a sealing area running around the edge, with at least one sealing element being pressed between the upper housing part and the lower housing part on the sealing area.
  • the sealing element increases the effectiveness of a tight seal and also enables laterally displaceable storage.
  • an insulating layer and/or reflective layer thermally separating the upper housing part from the lower housing part is accommodated in an interior space formed by the upper housing part and the lower housing part.
  • a particularly effective use of heat can be achieved by both measures.
  • an inner surface of the housing upper part and/or the housing lower part can be designed as a reflector, e.g. by polishing an inner surface, e.g. in the case of stainless steel as the base material or by applying a reflective layer.
  • an insulating layer can be introduced in the sealing area between the upper housing part and the lower housing part.
  • the food support has only at least one surface heater for heating the food support surface, which enables a particularly simple and inexpensive design.
  • An alternative is for the food support to additionally have at least one surface heater for heating its underside.
  • the food support can also be used as a cooking space divider.
  • a base body of the lower housing part needs to be less temperature-resistant than a main body of the upper housing part.
  • the upper housing part may have a body made of temperature-resistant glass, glass ceramic, stainless steel, enamelled stainless steel, multi-layer materials, etc.
  • the lower housing part may consist essentially of aluminum (especially as a die-cast part) or plastic.
  • the food support does not have a closed housing, but can in particular be designed to be open, e.g. with the basic shape of a baking tray.
  • the food support can have one or more temperature sensors for sensing in particular a temperature of its food support surface and/or its surface heating.
  • the measurement data from the at least one temperature sensor can be used by an associated cooking appliance, in which the food support can be operated, e.g. for regulation (for example temperature regulation) and/or for temperature limitation.
  • the temperature can be limited autonomously by the food support, for example by means of a bimetallic switch or another thermal switch (e.g. Klixon).
  • the food support is set up for operation with a maximum temperature of no more than approx. 200° C. on the food support surface. In this way, the risk of the food being cooked burning can be reduced.
  • the food support can be provided and/or set up for operation at a maximum power of no more than approx. 1000 W. In this way, too, the risk of the food being cooked being burned can be reduced. In addition, thermal insulation of the food support from its surroundings can generally be dispensed with in this power range.
  • the food support can be provided with a grip strip or grip recess, particularly in its front area.
  • the food support has at least one electrical connection element for making electrical contact with the cooking appliance for power transmission and/or data transmission (e.g. at least one plug-in connection element). If the food support has a sealed housing, the electrical connection element can preferably also be designed to be sealed.
  • the food support is a slide-in food support for independent use in a cooking chamber of a cooking appliance.
  • the slide-in food support can be provided in particular for independent positioning in a cooking chamber of a cooking appliance.
  • the slide-in food rack can be arranged in particular at a predetermined height or shelf level over a substantially entire plane.
  • the type of introduction, positioning or attachment of the slide-in food support is not restricted and can include a support on lateral support surfaces of a cooking chamber delimiting the cooking chamber, attachment to telescopic rails and attachment to a hanging structure of a cooking appliance door, etc.
  • the food support can be a food support that is not intended for use in a cooking chamber, eg a food support for a raclette device or a hot stone.
  • Fig.1 shows a sectional view from above of a food support 1 inserted into a cooking appliance B.
  • the cooking appliance B is here an oven or a corresponding stove, the cooking chamber G of which is delimited by a muffle M open at the front and a cooking chamber door T closing the muffle M at the front.
  • a left-hand and a right-hand cooking chamber wall S and a rear wall R of the muffle M are shown here.
  • the underside of the food support 1 is equipped with a surface heater 2 which has a heating track 3 designed as a heating conductor layer, with the two ends of the heating track 3 each having a contact point 4 .
  • the contact points 4 are arranged directly adjacent to and at the edge of the surface heating 2 .
  • the heating track 3 essentially follows a course of several nested rectangles.
  • the surface heating 2 covers a large part of an upper side of the food support 1 .
  • the contact points 4 are electrically connected to a connection element 20, which in turn is electrically connected to a suitable connection counter-element K.
  • the connection element 20 and the connection counter-element K can, for example, enter into an electrical plug-in connection.
  • Figures 2A to 2C show different configurations or layouts of a surface heating for a food support, for example the food support 1.
  • Figure 2A shows Figure 2A an embodiment of a surface heating 2a, in which a contact point 4 is positioned at the edge and the other contact point 4 is centered.
  • the heating track 3a now essentially follows an angular, spiral-shaped course.
  • Both contact points 4 are adjacent and arranged in an inner region of a panel heater 2b.
  • the associated heating track 3b has two angular, spiral-shaped, nested heating track sections.
  • Figure 2C shows a surface heating 2c with two contact points 4, which are arranged on opposite edge regions of the surface heating 2c.
  • the contact points 4 are connected to one another by means of an angular, meandering heating track 3c.
  • Fig.3 shows a possible electrical contact of a panel heater 2 or 2a to 2c.
  • the surface heating 2, 2a - 2c is arranged on the inside on an upper side of a housing 5 of the food support 1 .
  • the housing 5 thus represents a base body for the panel heating 2, 2a-2c.
  • the contact piece 6 is pressed against the contact point 4 by means of an electrically conductive compression spring 7 .
  • the compression spring in turn is electrically connected to the connection piece 20 of the food support 1 .
  • An electrical signal (supply current, data signal, etc.) can thus reach the contact point 4 from the connection piece 20 via the compression spring 7 and the contact piece 6, or vice versa.
  • This contacting is particularly advantageous for a food support 1 in which the housing 5 surrounds the surface heating 2 or 2a-2c and which has an upper and lower housing part that can be assembled, since this enables particularly simple contacting without post-processing.
  • Fig.4 shows a sectional side view of another possible aspect of an embodiment of the food support 1, which is not part of the invention.
  • the housing 5 of the food support 1 comprises an upper housing part 5o and a lower housing part 5u, which are placed one on top of the other and connected at the edge.
  • the upper housing part 5o has a base body made of stainless steel, for example, with an enamel layer being able to be present on the outside, for example.
  • the upper housing part 5o also has a support surface for the food to be cooked in the form of a bowl-shaped depression 8 .
  • the surface heater 2 or 2a - 2c is attached to an underside of the bowl-shaped depression 8 which corresponds to an inside of the housing 5 .
  • the use of stainless steel for the housing upper part 5o has the advantage that a mechanically (e.g. against stress from cutlery, etc.), thermally (e.g. against the surface heating 2, 2a - 2c) and chemically (e.g. against a cleaning agent) resistant depression 8 or food support is provided. Since stainless steel is electrically conductive, the surface heating 2 or 2a - 2c is constructed in several layers. An electrically insulating insulation layer 9 is thus inserted between the layered heating track 3 or 3a-3c and the housing upper part 5o made of stainless steel. For lateral or horizontal heat spreading, a heat spreading layer 10 is introduced between the insulating layer 9 and the upper housing part 5o.
  • the electrically insulating insulation layer 9 can be made of aluminum oxide, for example, the heat spreading layer 10 can be made of aluminum, for example, and the heating track 3 or 3a - 3c can be made of CrNi or a vitreous material loaded with carbon nanotubes, for example.
  • the heating track 3 or 3a - 3c can for example have an average thickness of 25 to 50 microns, while the electrically insulating insulation layer 9 and the heating track 3 or 3a - 3c together preferably have a thickness of not more than 700 microns.
  • the electrically insulating insulation layer 9 and the heating track 3 or 3a-3c can be applied, for example, by plasma spraying or screen printing.
  • the lower housing part 5u has no surface heating or other heating, so that the food support 1, which is designed as a cooking chamber divider, can be used in particular as a mobile bottom heater (and/or as a heatable food support).
  • the lower housing part 5u can be made of a material that is less thermally and/or mechanically resistant than high-grade steel, e.g. made of plastic or aluminum.
  • a protective layer 13 is also applied as an outer layer to the heating track 3 or 3a-3c.
  • thermal insulation material can be accommodated between the surface heating 2, 2a-2c and the lower housing part 5u in an interior space 11 formed by the upper housing part 5o and the lower housing part 5u.
  • the upper housing part 5o can have a multi-layer or multi-layered structure, with a side of the upper housing part 5o facing the surface heating being formed by a heat spreading layer, e.g. made of aluminum, and a side facing away from the surface heating being formed by a hard wear layer, e.g. made of stainless steel.
  • a heat spreading layer e.g. made of aluminum
  • a hard wear layer e.g. made of stainless steel.
  • Figures 5A to 5D show a sectional side view of a section of a food support 1 whose edge closure area is designed differently using a sealing element.
  • Figure 5A shows a possible contact area or closure area 13a for marriage or connection of the upper housing part 5o to the lower housing part 5u.
  • Both the upper housing part 5o and the lower housing part 5u have a laterally outwardly protruding edge 14a or 15a.
  • the edge 14a of the upper housing part 5o and the edge 15a of the lower housing part 5u lie flat on one another.
  • the edge 15a has a channel or groove 16 for partially accommodating a sealing element 17, here: a silicone seal.
  • the edge 14a is bent downwards at its free end. If the edges 14a and 15a are placed flat on one another, the sealing element 17 is pressed in between and effectively seals off the interior 11, for example against flushing water and steam.
  • the edges 14a and 15a can be connected to one another at least at certain points in a non-positive, positive or material connection (for example by welding or gluing). For example, the free edges of the rims 14a and 15a can be welded together.
  • Figure 5B shows a closure area 13b in which, in contrast to the closure area 13a, the edge 15b of the lower housing part 5u is bent in the direction of the interior 11. As a result, the interior 11 can be enlarged and a lateral expansion of the closure area 13b can be reduced.
  • the edge 14b of the housing upper part 5o is further bent down at its free edge.
  • Figure 5C shows a closure area 13c in which, in contrast to the closure area 13a, the free end of the edge 15c of the lower housing part 5u perpendicularly abuts the flat area of the edge 14c of the upper housing part 5o.
  • the contact surface between the upper housing part 5o and the lower housing part 5u is essentially linear, which enables improved thermal decoupling between the upper housing part 5o and the lower housing part 5u.
  • the edge 15c no longer has a groove 16 . Rather, the sealing element 17 is clamped between horizontal areas of the edges 14c and 15c.
  • the edge 14c of the housing upper part 5o is also bent down at its free end.
  • Figure 5D shows a closure area 13d in which the edge 14d of the upper housing part 5o and the edge 15d of the lower housing part 5u are separated from one another by a sealing element in the form of a strip-shaped slider 18 and clamp it between them.
  • the slider 18 is glued to the edge 14d and/or to the edge 15d. By the slider 18 is still achieves more effective thermal decoupling between the upper housing part 5o and the lower housing part 5u.
  • Figures 6A to 6C show a sectional side view of a section of a food support 1 with different configurations of its edge-side closure area, now without the use of a sealing element 17 or 18.
  • Figure 6A shows, for example, a closure area 13e, in which the edge 14e of the housing upper part 5o and the edge 15e of the housing lower part 5u are formed in a simple planar manner and are arranged so that they rest on one another.
  • the free ends or edges of the rims 14e and 15e are flush and connected to one another by a circumferential weld seam 19 in a materially bonded manner. Such a connection is particularly easy to produce.
  • Figure 6B 13 shows a closure area 13f in which the edge 14f of the upper housing part 5o is tightly wrapped or crimped around the edge 15f of the lower housing part 5u, sufficient tightness being achieved by the frictional connection between the edges 14f and 15f.
  • a connection has the advantage that it can be achieved solely by deforming the material, ie without welding or gluing.
  • the edges 14f and 15f can also be glued or spot-welded.
  • Figure 6C shows a closure area 13g in which the edge 14g of the upper housing part 5o is folded over or crimped wide around the edge 15g of the lower housing part 5u. Adequate tightness and strength is achieved by a circumferential weld seam 19 in an area of a free edge of the rim 14g.
  • Figures 7A to 7C show a sectional side view of the food carrier according to a respective further embodiment.
  • Figure 7A shows an actively heatable food support 21a, which is not part of the present invention, with a base body 22 in the form of a plate.
  • the base body 22 has a central recess 23 as the surface to be cooked (or the recess 23 is the surface to be cooked), for example similar to a baking tray.
  • the recess 23 has a substantially flat bottom 24 and a peripheral side wall 25 or side edge, which merge into one another at a transition area 26 that is curved in profile.
  • the surface heating, eg 2, 2a - 2c is arranged on an underside of the floor 24. The surface heating 2, 2a - 2c is now not tightly housed in an interior of a housing, but exposed to the environment.
  • the heat spreading layer of the surface heating 2, 2a-2c transfers heat very evenly to the base 24, so that food to be cooked lying on the base 24 can be heated evenly. Only an edge area of the depression 23, including the base 24, can have a lower temperature due to heat dissipation to the side wall 25.
  • the base body 22 consists of a simple sheet metal, e.g.
  • Figure 7B shows a heatable food support 21b similar to the food support 21a, with the surface heating, for example 2, 2a-2c, now extending over the transition area 26 to the peripheral side wall 25.
  • the edge area of the depression 23 can also be heated evenly, which is particularly advantageous, for example, when preparing flat items to be cooked such as pizza dough, cakes, etc.
  • Figure 7C shows a heatable food support 21c, which is not part of the present invention, similar to the food support 21b, wherein the surface heating, e.g. 2, 2a - 2c, does not extend over the transition area 26, but only on the bottom 24 and on the peripheral side wall 25 extends, possibly with one or more crossings of a heating track at the transition area 26.
  • the surface heating e.g. 2, 2a - 2c
  • a panel heater 2, 2a - 2c separate panel heaters for the bottom 24 and the side wall 25 can be used.
  • suitable features of the exemplary embodiments shown can be combined with one another or substituted for one another.
  • the layer structure of the surface heating for all surface heating 2, 2a - 2c are used.
  • the layer structure and/or the routing of the heating track of the surface heating can also be used both for food supports with an enclosed surface heating and with an open surface heating.
  • the base body in the area of the food support surface can also consist of glass or glass ceramic, for example, in addition to stainless steel.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Baking, Grill, Roasting (AREA)
  • Cookers (AREA)

Description

Die Erfindung betrifft einen Gargutträger, der einen Grundkörper aufweist, an dessen Oberseite eine Gargutauflagefläche vorhanden ist, und welcher mindestens eine Heizung zum Heizen der Gargutauflagefläche aufweist (aktiv beheizbarer Gargutträger). Aus DE 42 17 545 A1 ist ein elektrischer Backofen mit einer Trennplatte zur Aufteilung eines Garraums des Backofens bekannt, wobei die Trennplatte mit zwei elektrischen Heizelementen ausgestattet ist, die eine Unterhitze eines oberen Garraumbereichs und eine Oberhitze eines unteren Garraumbereichs bilden können. Zusammen mit der fest in dem Backofen installierten Oberhitze und Unterhitze sind die beiden Garraumbereiche nahezu unabhängig ansteuerbar.The invention relates to a food support which has a base body on the upper side of which there is a food support surface and which has at least one heater for heating the food support surface (actively heatable food support). Out of DE 42 17 545 A1 an electric oven with a dividing plate for dividing a cooking space of the oven is known, the dividing plate being equipped with two electric heating elements which can form a lower heat of an upper cooking space area and an upper heat of a lower cooking space area. Together with the top and bottom heat permanently installed in the oven, the two cooking compartment areas can be controlled almost independently.

Aus DE 37 22 617 C1 ist eine elektrisch beheizbare Backauflage bekannt, wobei die Backauflage einen im wesentlichen geschlossenen Blechkörper aufweist, in dem mindestens ein Heizelement angeordnet ist.Out of DE 37 22 617 C1 an electrically heatable baking pad is known, the baking pad having an essentially closed sheet metal body in which at least one heating element is arranged.

Es ist die Aufgabe der vorliegenden Erfindung, eine verbesserte Möglichkeit zum Erwärmen von Gargut auf einem beheizbaren Gargutträger bereitzustellen.It is the object of the present invention to provide an improved possibility for heating food to be cooked on a heatable food carrier.

Diese Aufgabe wird gemäß den Merkmalen der unabhängigen Ansprüche gelöst. Bevorzugte Ausführungsformen sind insbesondere den abhängigen Ansprüchen entnehmbar.This object is solved according to the features of the independent claims. Preferred embodiments can be found in particular in the dependent claims.

Mittels der mindestens einen Wärmespreizungsschicht kann eine Temperatur an der Gargutauflagefläche vergleichmäßigt werden. Folglich kann eine ungleichmäßige Wärmeeinbringung, z.B. umfassend unerwünschte Temperaturspitzen, in ein auf der Gargutauflagefläche aufliegendes Gargut vermieden werden. Diese Temperaturspitzen können beispielsweise an einem Bereich der Gargutauflagefläche direkt oberhalb einer Heizbahn der Flächenheizung, im Bereich von Querschnittverjüngungen einer Heizbahn, aufgrund von lokal unterschiedlichen Umgebungsbedingungen und/oder aufgrund von Fertigungstoleranzen auftreten.By means of the at least one heat spreading layer, a temperature on the support surface for the food to be cooked can be evened out. Consequently, an uneven introduction of heat, e.g. including undesired temperature peaks, into a cooking product lying on the cooking product support surface can be avoided. These temperature peaks can occur, for example, in an area of the food support surface directly above a heating track of the surface heating, in the area of cross-sectional narrowing of a heating track, due to locally different environmental conditions and/or due to manufacturing tolerances.

Die Flächenheizung kann insbesondere eine Heizung sein, welche, z.B. im Gegensatz zu einem Rohrheizkörper, Wärme flächig oder großflächig erzeugt. Die Flächenheizung kann insbesondere einen Großteil einer Oberseite und/oder Unterseite des Gargutträgers überdecken oder abdecken und folglich unmittelbar flächig erwärmen. Durch die Flächenheizung wird zudem eine flache Bauform des Gargutträgers erreicht.The surface heating can in particular be a heater which, e.g. in contrast to a tubular heater, generates heat over a large area. The surface heating can, in particular, cover or cover a large part of an upper side and/or underside of the food support and consequently heat the surface directly. A flat design of the food support is also achieved thanks to the surface heating.

Der Grundkörper kann insbesondere ein selbsttragender Bestandteil des Gargutträgers sein, welcher die Grundform des Gargutträgers bestimmt.The base body can in particular be a self-supporting part of the food support which determines the basic shape of the food support.

Es ist vorteilhaft, wenn das Material der mindestens einen Wärmespreizungsschicht (der Flächenheizung und/oder des Grundkörpers) ein gut wärmeleitendes Material ist und insbesondere eine Wärmeleitfähigkeit von mehr als 100 W/(m·K) aufweist. Es ist eine Ausgestaltung, dass zumindest eine Wärmespreizungsschicht Aluminium und/oder Kupfer aufweist. Das Aluminium und/oder das Kupfer können beispielsweise als ein reines Material (z.B. mit einem Reinheitsgrad von 95% oder mehr) oder als eine Legierung vorliegen.It is advantageous if the material of the at least one heat spreading layer (the surface heating and/or the base body) is a material with good thermal conductivity and in particular has a thermal conductivity of more than 100 W/(m*K). In one configuration, at least one heat spreading layer has aluminum and/or copper. The aluminum and/or copper may be present, for example, as a pure material (e.g., 95% purity or greater) or as an alloy.

Falls die Flächenheizung die mindestens eine Wärmespreizungsschicht aufweist, kann die Flächenheizung insbesondere eine Heizleiterschicht zum Erzeugen von Wärme bei einer Durchleitung von Strom und mindestens eine Wärmespreizungsschicht aufweisen. Für eine effektive Wärmeverteilung ist die mindestens eine Wärmespreizungsschicht bevorzugt zwischen der Heizleiterschicht und dem zu erwärmenden Substrat oder Grundkörper angeordnet.If the surface heating has the at least one heat spreading layer, the surface heating can have in particular a heating conductor layer for generating heat when current is passed through and at least one heat spreading layer. For effective heat distribution, the at least one heat spreading layer is preferably arranged between the heating conductor layer and the substrate or base body to be heated.

Die Heizleiterschicht kann eine Strukturierung in Form mindestens einer (länglichen oder bandförmigen) Heizbahn aufweisen. Falls die Wärmespreizungsschicht eine elektrisch leitfähige Schicht ist, kann die die Flächenheizung zwischen der Heizleiterschicht und der Wärmespreizungsschicht eine elektrisch isolierende Isolierungsschicht aufweisen.The heating conductor layer can have a structure in the form of at least one (elongated or band-shaped) heating track. If the heat spreading layer is an electrically conductive layer, the surface heating can have an electrically insulating insulation layer between the heating conductor layer and the heat spreading layer.

Es ist eine Weiterbildung, dass die Heizleiterschicht der Flächenheizung aus CrNi besteht. Es wird eine Dicke der Heizleiterschicht zwischen einem und 300 Mikrometern, insbesondere zwischen 25 und 50 Mikrometern, bevorzugt. Jedoch ist das Material der Heizleiterschicht nicht auf CrNi beschränkt und kann z.B. auch Silber oder Kohlenstoffnanoröhrchen usw. umfassen. Die Isolierungsschicht weist vorzugsweise ein dielektrisches Material, bevorzugt Aluminiumoxid, auf. Es wird eine Dicke der Isolierungsschicht zwischen 150 und 500 Mikrometern, insbesondere zwischen 250 und 300 Mikrometern, bevorzugt.It is a further development that the heating conductor layer of the surface heating consists of CrNi. A thickness of the heating conductor layer between 1 and 300 micrometers, in particular between 25 and 50 micrometers, is preferred. However, the material of the heating conductor layer is not limited to CrNi and can also include silver or carbon nanotubes, etc., for example. The insulating layer preferably comprises a dielectric material, preferably aluminum oxide. A thickness of the insulation layer between 150 and 500 microns, in particular between 250 and 300 microns, is preferred.

Zudem kann beispielsweise noch eine Schutzschicht ("Top Coat") als insbesondere äußerste Schicht der Flächenheizung aufgebracht werden, welche z.B. einen verbesserten Schutz vor einem Eindringen von Feuchtigkeit, gegen mechanischen Abrieb und/oder gegen chemische Einwirkungen bietet.In addition, for example, a protective layer (“top coat”) can be applied, in particular as the outermost layer of the surface heating, which, for example, offers improved protection against the ingress of moisture, against mechanical abrasion and/or against chemical effects.

Zur elektrischen Kontaktierung können, z.B. mittels einer Schablone, z.B. Bronzeflächen aufgespritzt werden, welche die Heizbahn kontaktieren und an welchen elektrische Leitungen angebracht, z.B. angeschweißt oder angedrückt, werden können.For electrical contacting, e.g. using a template, e.g. bronze surfaces can be sprayed on, which contact the heating track and to which electrical lines can be attached, e.g. welded or pressed.

Es ist noch eine Weiterbildung, dass mindestens die Heizleiterschicht (insbesondere die Heizleiterschicht, die elektrische Isolierungsschicht und/oder die mindestens eine Wärmespreizungsschicht) mittels eines Plasmaverfahrens aufgebracht worden ist. Dabei ist insbesondere eine Verwendung eines thermischen Plasmaspritzens vorteilhaft. Mittels des Plasmaspritzens kann zumindest die Heizleiterschicht auf den Grundkörper aufgebracht werden. Zum Plasmaspritzen kann beispielsweise ein Plasmabrenner verwendet werden. Das Plasmaspritzen weist den Vorteil auf, dass es einfach durchführbar ist und eine hohe Genauigkeit der erzeugten Lagen ermöglicht. Zudem können vielerlei Materialien plasmagespritzt werden. Das Substrat oder der Grundkörper erwärmt sich bei der Beschichtung kaum (bis maximal 200°C), was ebenfalls vorteilhaft ist. Jedoch ist das Aufbringen mindestens der Heizleiterschicht nicht auf ein Plasmaverfahren beschränkt und kann z.B. auch in einem Siebdruckverfahren usw. aufgebracht werden.Another development is that at least the heating conductor layer (in particular the heating conductor layer, the electrical insulation layer and/or the at least one heat spreading layer) has been applied using a plasma process. In particular use of thermal plasma spraying advantageous. At least the heating conductor layer can be applied to the base body by means of plasma spraying. For example, a plasma torch can be used for plasma spraying. Plasma spraying has the advantage that it is easy to carry out and enables the layers produced to be highly precise. In addition, many different materials can be plasma sprayed. The substrate or the base body hardly heats up during the coating (up to a maximum of 200°C), which is also advantageous. However, the application of at least the heating conductor layer is not limited to a plasma process and can also be applied in a screen printing process, etc., for example.

Es ist noch eine Ausgestaltung, dass der Grundkörper ein Mehrlagenkörper oder Mehrschichtkörper ist, welcher mindestens eine Wärmespreizungsschicht oder -lage aufweist und welcher im Bereich der Gargutauflagefläche mittels einer Schicht aus Edelstahl, Glas oder Glaskeramik gebildet wird. Dadurch, dass die mindestens eine Wärmespreizungsschicht nun in den Grundkörper integriert ist, kann die Flächenheizung grundsätzlich ohne oder mit nur verringerter Berücksichtigung einer Wärmespreizung entwerfen werden. Mittels der Schicht aus Edelstahl, Glas oder Glaskeramik wird eine gute mechanische (z.B. gegenüber einer Beanspruchung durch Besteck usw.), thermische (z.B. gegenüber der Flächenheizung) und chemische (z.B. gegenüber einem Reinigungsmittel) Widerstandsfähigkeit ermöglicht.Another configuration is that the base body is a multi-layer body or multi-layer body which has at least one heat-spreading layer or layer and which is formed by a layer of stainless steel, glass or glass-ceramic in the area of the food support surface. Due to the fact that the at least one heat spreading layer is now integrated into the base body, the surface heating can in principle be designed without or with only reduced consideration of heat spreading. The layer of stainless steel, glass or glass-ceramic enables good mechanical (e.g. against stress from cutlery, etc.), thermal (e.g. against surface heating) and chemical (e.g. against a cleaning agent) resistance.

Es ist eine vorteilhafte Weiterbildung, dass der Grundkörper ein Mehrlagenkörper oder Mehrschichtkörper ist, dessen Gargutauflagefläche (unmittelbar) mittels der Schicht aus Edelstahl, Glas oder Glaskeramik gebildet wird. Alternativ kann der Grundkörper im Bereich der Gargutauflagefläche mit einer entsprechenden Beschichtung ausgestattet sein. Die Beschichtung kann insbesondere durch einen Härtegrad nach Mohs von mindestens 6,0 einen guten mechanischen Schutz der Oberfläche gewährleisten. Die Beschichtung kann ferner chemisch möglichst inert sein. Die Auflagefläche kann zur leichteren Reinigbarkeit gemäß einer weiteren Ausgestaltung mit einer Leichtreinigungslage versehen sein, welche insbesondere auch hart und/oder chemisch möglichst inert sein kann.It is an advantageous further development that the base body is a multi-layer body or multi-layer body whose surface for the food to be cooked is (directly) formed by the layer of stainless steel, glass or glass ceramic. Alternatively, the base body can be equipped with a corresponding coating in the area of the food support surface. The coating can ensure good mechanical protection of the surface, in particular through a Mohs degree of hardness of at least 6.0. The coating can also be as chemically inert as possible. For easier cleaning, according to a further embodiment, the support surface can be provided with an easy-to-clean layer, which in particular can also be hard and/or as chemically inert as possible.

Falls der Grundkörper zumindest im Bereich der Gargutauflagefläche mindestens eine Wärmespreizungsschicht aufweist, kann die Heizleiterschicht direkt auf dem Grundkörper aufgebracht sein, insbesondere falls der Grundkörper ein an seiner der Flächenheizung zugewandten Seite elektrisch nicht leitender Grundkörper ist, z.B. mit Emaille oder aus Glas (insbesondere Borosilikatglas) oder Glaskeramik. Die Heizleiterschicht kann alternativ indirekt über eine elektrisch isolierende Isolierungsschicht auf dem zu erwärmenden Grundkörper aufge bracht sein, insbesondere falls der Grundkörper ein an seiner der Flächenheizung zugewandten Seite elektrisch leitender Grundkörper ist.If the base body has at least one heat spreading layer, at least in the area of the food support surface, the heating conductor layer can be applied directly to the base body, especially if the base body is an electrically non-conductive base body on its side facing the surface heating, e.g. with enamel or made of glass (especially borosilicate glass) or glass ceramic. Alternatively, the heating conductor layer can be applied indirectly via an electrically insulating insulation layer to the base body to be heated, in particular if the base body is an electrically conductive base body on its side facing the surface heating.

In einem Bereich des Grundkörpers, an dem die Flächenheizung aufgebracht ist, kann zur Unterdrückung von thermischen Fehlanpassungen zwischen der Flächenheizung und dem zu erwärmenden Grundkörper der zu erwärmende Grundkörper mit einer Bombierung und/oder Prägung(en) versehen sein.In an area of the base body to which the surface heating is applied, the base body to be heated can be provided with a camber and/or embossing(s) to suppress thermal mismatches between the surface heating and the base body to be heated.

Es ist vorteilhaft, wenn das Material der mindestens einen Wärmespreizungsschicht (der Flächenheizung und/oder des Grundkörpers) ein gut wärmeleitendes Material ist und insbesondere eine Wärmeleitfähigkeit von mehr als 100 W/(m·K) aufweist. Das Material der mindestens einen Wärmespreizungsschicht kann insbesondere Metall aufweisen. Es ist eine Ausgestaltung, dass zumindest eine Wärmespreizungsschicht Aluminium und/oder Kupfer aufweist. Das Aluminium und/oder das Kupfer können beispielsweise als ein reines Material (z.B. mit einem Reinheitsgrad von 95% oder mehr) oder als eine Legierung vorliegen.It is advantageous if the material of the at least one heat spreading layer (the surface heating and/or the base body) is a material with good thermal conductivity and in particular has a thermal conductivity of more than 100 W/(m*K). The material of the at least one heat spreading layer can include metal in particular. In one configuration, at least one heat spreading layer has aluminum and/or copper. The aluminum and/or copper may be present, for example, as a pure material (e.g., 95% purity or greater) or as an alloy.

Der Gargutträger kann insbesondere mehrere Flächenheizungen mit unterschiedlichem Aufbau oder Layout (z.B. mit einer unterschiedlichen Führung und/oder Geometrie ihrer Heizbahn) aufweisen. Durch die Gestaltung des Heizungslayouts kann die Flächenheizung beispielsweise an verschiedene Kontaktierungsmöglichkeiten (beispielsweise seitlich, hinten, mittig usw.) angepasst werden, z.B. hinsichtlich kurzer Kabellängen zu einem elektrischen Anschlusselement oder hinsichtlich einer mechanischen Andrücklösung.The food support can in particular have several surface heating systems with different structures or layouts (e.g. with a different guide and/or geometry of their heating track). By designing the heating layout, the surface heating can be adapted to various contact options (e.g. on the side, at the back, in the middle, etc.), e.g. with regard to short cable lengths to an electrical connection element or with regard to a mechanical pressing solution.

Zudem kann das Heizungslayout so gestaltet sein, dass eine möglichst geringe elektrische Potentialdifferenz zwischen verschiedenen Abschnitten einer Heizbahn auftritt. Dies ermöglicht reduzierte Anforderungen an eine elektrische Isolierung zwischen den Heizbahnabschnitten, z.B. hinsichtlich eines Abstands, einer Materialwahl, Fertigungstoleranzen usw.In addition, the heating layout can be designed in such a way that the smallest possible electrical potential difference occurs between different sections of a heating track. This enables reduced requirements for electrical insulation between the heating track sections, e.g. in terms of distance, choice of material, manufacturing tolerances, etc.

Die Gargutauflagefläche wird erfindungsgemäß durch zumindest einen Teil einer oberseitigen Vertiefung des Gargutträgers gebildet. Die Vertiefung kann insbesondere eine schalenförmige Vertiefung sein. Die Gargutauflagefläche kann insbesondere eine Schüttkante oder Schräge aufweisen.According to the invention, the support surface for the food to be cooked is formed by at least part of a depression on the upper side of the food support. The indentation can in particular be a bowl-shaped indentation. The support surface for the food to be cooked can in particular have a pouring edge or bevel.

Erfindungsgemäß erstreckt sich mindestens eine Flächenheizung von einem Boden der Vertiefung bis einschließlich zu einem Seitenrand der Vertiefung. Dadurch können der Boden, der Seitenrand als auch ein Übergangsbereich zwischen dem Boden und der Seitenwand erwärmt werden, was eine besonders gleichmäßiger Temperaturverteilung in einem Randbereich der Vertiefung ermöglicht.According to the invention, at least one surface heater extends from a bottom of the depression up to and including a side edge of the depression. As a result, the base, the side edge and also a transition area between the base and the side wall can be heated, which enables a particularly uniform temperature distribution in an edge area of the depression.

Es ist eine alternative Ausgestaltung, die nicht zur Erfindung gehört, dass sich mindestens eine erste Flächenheizung an einem Boden der Vertiefung befindet und sich mindestens eine zweite Flächenheizung an einem Seitenrand der Vertiefung befindet. Diese Flächenheizungen sind besonders einfach aufbringbar.It is an alternative embodiment, which is not part of the invention, that at least one first panel heater is located on a bottom of the recess and at least one second panel heater is located on a side edge of the recess. These panel heaters are particularly easy to apply.

Es ist noch eine Ausgestaltung, dass der Gargutträger ein zweiteiliges Gehäuse mit einem Gehäuseoberteil und einem Gehäuseunterteil (Gehäuseboden) aufweist, wobei das Gehäuseoberteil und das Gehäuseunterteil miteinander dicht verbunden sind. und zueinander seitenverschieblich gelagert sind. Das Gehäuseoberteil weist an seiner Oberseite die Gargutauflagefläche auf. Durch dieses leicht montierbare zweiteilige Gehäuse kann die Flächenheizung geschützt werden und eine verbesserte Reinigbarkeit erreicht werden.Another embodiment is that the food support has a two-part housing with a housing top part and a housing bottom part (housing base), the housing top part and the housing bottom part being tightly connected to one another. and are mounted laterally displaceable to each other. The upper part of the housing has the food support surface on its upper side. This easy-to-install, two-part housing protects the surface heating and improves cleanability.

Es ist eine Weiterbildung, dass das Gehäuseoberteil und das Gehäuseunterteil zumindest bereichsweise zueinander seitenverschieblich gelagert sind. Durch die seitenverschiebliche Lagerung kann eine unterschiedliche Wärmeausdehnung des Gehäuseoberteils und des Gehäuseunterteils zumindest teilweise ausgeglichen werden, was thermisch induzierte Spannungen und damit eine Gefahr einer Rissbildung und/oder einer Schichtablösung verringert.It is a further development that the upper housing part and the lower housing part are mounted laterally displaceable relative to one another, at least in certain areas. Due to the laterally displaceable mounting, a different thermal expansion of the upper part of the housing and the lower part of the housing can be at least partially compensated, which reduces thermally induced stresses and thus the risk of crack formation and/or delamination.

Die Verbindung zwischen dem Gehäuseoberteil und dem Gehäuseoberteil istfolglich bevorzugt derart ausgeführt, dass relative, insbesondere seitliche, Bewegungen, die aufgrund unterschiedlicher Temperaturausdehnungen der Gehäuseteile zueinander entstehen können, zumindest teilweise aufgefangen werden. Die Verbindung kann beispielsweise mittels eines Verklebens, einer Umbördelung usw. hergestellt werden. Des Weiteren bewirkt ein solcher Aufbau eine thermische Entkopplung zwischen den Gehäuseteilen.The connection between the upper part of the housing and the upper part of the housing is therefore preferably designed in such a way that relative, in particular lateral, movements that can occur due to different temperature expansions of the housing parts relative to one another are at least partially absorbed. The connection can be made, for example, by gluing, flanging, etc. Furthermore, such a structure brings about a thermal decoupling between the housing parts.

Es ist eine spezielle Ausgestaltung, dass das Gehäuseoberteil und das Gehäuseunterteil einen randseitig umlaufenden Verschlussbereich bilden, wobei an dem Verschlussbereich insbesondere mindestens ein Dichtungselement zwischen dem Gehäuseoberteil und dem Gehäuseunterteil eingepresst ist. Das Dichtelement erhöht eine Effektivität einer Dichtigkeit und ermöglicht weiterhin die seitenverschiebliche Lagerung.In a special embodiment, the upper housing part and the lower housing part form a sealing area running around the edge, with at least one sealing element being pressed between the upper housing part and the lower housing part on the sealing area. The sealing element increases the effectiveness of a tight seal and also enables laterally displaceable storage.

Es ist noch eine weitere Ausgestaltung, dass in einem durch das Gehäuseoberteil und das Gehäuseunterteil gebildeten Innenraum eine das Gehäuseoberteil von dem Gehäuseunterteil thermisch abtrennende Isolierlage und/oder Reflexionsschicht (reflektierende Folie o.ä.) untergebracht ist. Durch beide Maßnahmen kann eine besonders effektive Wärmenutzung erreicht werden. Alternativ zu der Einbringung der Reflexionsschicht kann eine innere Oberfläche des Gehäuseoberteils und/oder des Gehäuseunterteils als Reflektor ausgeführt sein, z.B. durch Polieren einer inneren Oberfläche, z.B. im Fall von Edelstahl als dem Basismaterial oder durch Aufbringen einer reflektierenden Schicht. Zur besseren thermischen Abschirmung eines Randbereiches der Garraumbegrenzung und zwischen den getrennten Garaumbereichen kann eine Isolierschicht in dem Verschlussbereich zwischen dem Gehäuseoberteil und dem Gehäuseunterteil eingebracht sein.In yet another embodiment, an insulating layer and/or reflective layer (reflecting film or similar) thermally separating the upper housing part from the lower housing part is accommodated in an interior space formed by the upper housing part and the lower housing part. A particularly effective use of heat can be achieved by both measures. As an alternative to the incorporation of the reflective layer, an inner surface of the housing upper part and/or the housing lower part can be designed as a reflector, e.g. by polishing an inner surface, e.g. in the case of stainless steel as the base material or by applying a reflective layer. For better thermal shielding of an edge area of the cooking chamber boundary and between the separate cooking chamber areas, an insulating layer can be introduced in the sealing area between the upper housing part and the lower housing part.

Es ist ferner eine Ausgestaltung, dass der Gargutträger lediglich mindestens eine Flächenheizung zum Erwärmen der Gargutauflagefläche aufweist, was eine besonders einfache und preiswerte Ausgestaltung ermöglicht. Es ist eine Alternative, dass der Gargutträger zusätzlich mindestens eine Flächenheizung zum Erwärmen seiner Unterseite aufweist. Der Gargutträger kann so auch als ein Garraumteiler verwendet werden.It is also an embodiment that the food support has only at least one surface heater for heating the food support surface, which enables a particularly simple and inexpensive design. An alternative is for the food support to additionally have at least one surface heater for heating its underside. The food support can also be used as a cooking space divider.

Insbesondere, falls nur das Gehäuseoberteil mit der mindestens einen Flächenheizung ausgerüstet ist und nicht das Gehäuseunterteil, braucht ein Grundkörper des Gehäuseunterteils weniger temperaturbeständig zu sein als ein Grundkörper des Gehäuseoberteils. Während das Gehäuseoberteil beispielsweise einen Grundkörper aus temperaturbeständigem Glas, Glaskeramik, Edelstahl, emailliertem Edelstahl, Mehrlagenmaterialien usw. aufweisen mag, mag das Gehäuseunterteilteil beispielsweise im Wesentlichen aus Aluminium (insbesondere als Druckgussteil) oder Kunststoff bestehen.In particular, if only the upper housing part is equipped with the at least one surface heating and not the lower housing part, a base body of the lower housing part needs to be less temperature-resistant than a main body of the upper housing part. While the upper housing part may have a body made of temperature-resistant glass, glass ceramic, stainless steel, enamelled stainless steel, multi-layer materials, etc., the lower housing part may consist essentially of aluminum (especially as a die-cast part) or plastic.

Alternativ weist der Gargutträger kein geschlossenes Gehäuse auf, sondern kann insbesondere offen ausgebildet sein, z.B. mit einer Grundform eines Backblechs.Alternatively, the food support does not have a closed housing, but can in particular be designed to be open, e.g. with the basic shape of a baking tray.

Der Gargutträger kann einen oder mehrere Temperatursensoren zum Abfühlen insbesondere einer Temperatur seiner Gargutauflagefläche und/oder seiner Flächenheizung aufweisen. Die Messdaten des mindestens einen Temperatursensors können von einem zugehörigen Gargerät, in welchem der Gargutträger betreibbar ist, z.B. für eine Regelung (beispielsweise eine Temperaturregelung) und/oder für eine Temperaturbegrenzung verwendet werden. Die Temperaturbegrenzung kann alternativ oder zusätzlich autonom von dem Gargutträger durchgeführt werden, beispielsweise mittels eines Bimetall-Schalters oder eines anderen thermischen Schalters (z.B. Klixon). Es ist eine Ausgestaltung, dass der Gargutträger zum Betrieb mit einer maximalen Temperatur an der Gargutauflagefläche von nicht mehr als ca. 200 °C eingerichtet ist. So kann eine Gefahr eines Anbrennens des Garguts verringert werden.The food support can have one or more temperature sensors for sensing in particular a temperature of its food support surface and/or its surface heating. The measurement data from the at least one temperature sensor can be used by an associated cooking appliance, in which the food support can be operated, e.g. for regulation (for example temperature regulation) and/or for temperature limitation. Alternatively or additionally, the temperature can be limited autonomously by the food support, for example by means of a bimetallic switch or another thermal switch (e.g. Klixon). In one embodiment, the food support is set up for operation with a maximum temperature of no more than approx. 200° C. on the food support surface. In this way, the risk of the food being cooked burning can be reduced.

Alternativ oder zusätzlich kann der Gargutträger zum Betrieb bei einer maximalen Leistung von nicht mehr als ca. 1000 W vorgesehen und/oder eingerichtet sein. Auch so kann eine Gefahr eines Anbrennens des Garguts verringert werden. Zudem kann in diesem Leistungsbereich auf eine thermische Isolierung des Gargutträgers gegenüber seiner Umgebung in der Regel verzichtet werden.Alternatively or additionally, the food support can be provided and/or set up for operation at a maximum power of no more than approx. 1000 W. In this way, too, the risk of the food being cooked being burned can be reduced. In addition, thermal insulation of the food support from its surroundings can generally be dispensed with in this power range.

Zur leichten Entnahme aus dem Garraum kann der Gargutträger mit einer Griffleiste oder Griffmulde versehen sein, insbesondere an seinem vorderen Bereich.For easy removal from the cooking space, the food support can be provided with a grip strip or grip recess, particularly in its front area.

Der Gargutträger weist mindestens ein elektrisches Anschlusselement für eine elektrische Kontaktierung zu dem Gargerät zur Leistungsübertragung und/oder Datenübertragung auf (z.B. mindestens ein Steckverbindungselement). Falls der Gargutträger ein dichtes Gehäuse aufweist, kann bevorzugt auch das elektrische Anschlusselement dicht ausgeführt sein.The food support has at least one electrical connection element for making electrical contact with the cooking appliance for power transmission and/or data transmission (e.g. at least one plug-in connection element). If the food support has a sealed housing, the electrical connection element can preferably also be designed to be sealed.

Es ist noch eine weitere Ausgestaltung, dass der Gargutträger ein Einschub-Gargutträger zum eigenständigen Einsatz in einem Garraum eines Gargeräts ist. Der Einschub-Gargutträger kann insbesondere zur eigenständigen Positionierung in einem Garraum eines Gargeräts vorgesehen sein. Der Einschub-Gargutträger kann insbesondere auf einer vorbestimmten Höhe oder Einschubebene über eine im Wesentlichen gesamte Ebene angeordnet sein. Die Art der Einführung, Positionierung oder Befestigung des Einschub-Gargutträgers ist dabei nicht eingeschränkt und kann eine Auflage auf seitlichen Auflageflächen einer den Garraum begrenzenden Garraummuffel, eine Befestigung an Teleskopschienen und eine Befestigung an einer Einhängestruktur einer Gargerätetür usw. umfassen. Alternativ kann der Gargutträger ein nicht zum Einsatz in einem Garraum vorgesehener Gargutträger sein, z.B. ein Gargutträger für ein Raclette-Gerät oder einen heißen Stein.It is yet another embodiment that the food support is a slide-in food support for independent use in a cooking chamber of a cooking appliance. The slide-in food support can be provided in particular for independent positioning in a cooking chamber of a cooking appliance. The slide-in food rack can be arranged in particular at a predetermined height or shelf level over a substantially entire plane. The type of introduction, positioning or attachment of the slide-in food support is not restricted and can include a support on lateral support surfaces of a cooking chamber delimiting the cooking chamber, attachment to telescopic rails and attachment to a hanging structure of a cooking appliance door, etc. Alternatively, the food support can be a food support that is not intended for use in a cooking chamber, eg a food support for a raclette device or a hot stone.

In den folgenden Figuren wird die Erfindung anhand von Ausführungsbeispielen schematisch genauer beschrieben. Dabei können zur Übersichtlichkeit gleiche oder gleichwirkende Elemente mit gleichen Bezugszeichen versehen sein.

Fig.1
zeigt in einer Schnittdarstellung als Ansicht von oben einen in ein Gargerät eingesetzten Gargutträger;
Fig.2A bis 2C
zeigen verschiedene Layouts einer Flächenheizung für einen Gargutträger;
Fig.3
zeigt eine mögliche elektrische Kontaktierung einer Flächenheizung;
Fig.4
zeigt als Schnittdarstellung in Seitenansicht eine mögliche Ausgestaltung eines Gargutträgers, der nicht Teil der Erfindung ist;
Fig.5A bis 5D
zeigen als Schnittdarstellung in Seitenansicht einen Ausschnitt aus einem Gargutträger mit unterschiedlichen Ausgestaltungen eines randseitigen Verschlussbereichs unter Verwendung eines Dichtelements;
Fig.6A bis 6C
zeigen als Schnittdarstellung in Seitenansicht einen Ausschnitt aus einem Gargutträger mit unterschiedlichen Ausgestaltungen eines randseitigen Verschlussbereichs ohne Verwendung eines dedizierten Dichtelements; und
Fig.7A bis 7C
zeigen als Schnittdarstellung in Seitenansicht Gargutträger, wobei Fig, 7A und 7C nicht Teil der beanspruchten Erfindung sind.
In the following figures, the invention is described schematically in more detail using exemplary embodiments. For the sake of clarity, elements that are the same or have the same effect can be provided with the same reference symbols.
Fig.1
shows a sectional representation as a view from above of a cooking product used in a cooking appliance;
Figures 2A to 2C
show different layouts of a surface heating for a food support;
Fig.3
shows a possible electrical contact of a panel heater;
Fig.4
shows a possible embodiment of a food support, which is not part of the invention, as a sectional side view;
Figures 5A to 5D
show a sectional side view of a section of a food support with different configurations of a sealing area on the edge using a sealing element;
Figures 6A to 6C
show a sectional side view of a section of a food support with different configurations of a sealing area on the edge without using a dedicated sealing element; and
Figures 7A to 7C
show a sectional view in side view of the food carrier, where Figures 7A and 7C are not part of the claimed invention.

Fig.1 zeigt in einer Schnittdarstellung als Ansicht von oben einen in ein Gargerät B eingesetzten Gargutträger 1. Fig.1 shows a sectional view from above of a food support 1 inserted into a cooking appliance B.

Das Gargerät B ist hier ein Backofen oder entsprechender Herd, dessen Garraum G durch eine vorderseitig offene Muffel M und eine die Muffel M vorderseitig verschließende Garraumtür T begrenzt wird. Von der Muffel M sind hier eine linksseitige und eine rechtsseitige Garraumwand S und eine Rückwand R gezeigt.The cooking appliance B is here an oven or a corresponding stove, the cooking chamber G of which is delimited by a muffle M open at the front and a cooking chamber door T closing the muffle M at the front. A left-hand and a right-hand cooking chamber wall S and a rear wall R of the muffle M are shown here.

Der Gargutträger 1 ist unterseitig mit einer Flächenheizung 2 ausgerüstet, welche eine als eine Heizleiterschicht ausgestaltete Heizbahn 3 aufweist, wobei die beiden Enden der Heizbahn 3 jeweils eine Kontaktstelle 4 aufweisen. Die Kontaktstellen 4 sind direkt benachbart und randseitig zu der Flächenheizung 2 angeordnet. Die Heizbahn 3 folgt im Wesentlichen einem Verlauf aus mehreren ineinander verschachtelten Rechtecken. Die Flächenheizung 2 deckt einen Großteil einer Oberseite des Gargutträgers 1 ab. Die Kontaktstellen 4 sind elektrisch mit einem Anschlusselement 20 verbunden, welches wiederum mit einem passenden Anschlussgegenelement K elektrisch verbunden ist. Das Anschlusselement 20 und das Anschlussgegenelement K können beispielsweise eine elektrische Steckverbindung eingehen.The underside of the food support 1 is equipped with a surface heater 2 which has a heating track 3 designed as a heating conductor layer, with the two ends of the heating track 3 each having a contact point 4 . The contact points 4 are arranged directly adjacent to and at the edge of the surface heating 2 . The heating track 3 essentially follows a course of several nested rectangles. The surface heating 2 covers a large part of an upper side of the food support 1 . The contact points 4 are electrically connected to a connection element 20, which in turn is electrically connected to a suitable connection counter-element K. The connection element 20 and the connection counter-element K can, for example, enter into an electrical plug-in connection.

Fig.2A bis 2C zeigen verschiedene Ausgestaltungen oder Layouts einer Flächenheizung für einen Gargutträger, z.B. den Gargutträger 1. Figures 2A to 2C show different configurations or layouts of a surface heating for a food support, for example the food support 1.

So zeigt Fig.2A eine Ausgestaltung einer Flächenheizung 2a, bei welcher eine Kontaktstelle 4 randseitig und die andere Kontaktstelle 4 mittig positioniert ist. Die Heizbahn 3a folgt nun im Wesentlichen einem eckig spiralförmigen Verlauf.So shows Figure 2A an embodiment of a surface heating 2a, in which a contact point 4 is positioned at the edge and the other contact point 4 is centered. The heating track 3a now essentially follows an angular, spiral-shaped course.

In Fig.2B sind beide Kontaktstellen 4 benachbart und in einem inneren Bereich einer Flächenheizung 2b angeordnet. Die zugehörige Heizbahn 3b weist zwei eckig spiralförmige, ineinander verschachtelte Heizbahnabschnitte auf.In Figure 2B Both contact points 4 are adjacent and arranged in an inner region of a panel heater 2b. The associated heating track 3b has two angular, spiral-shaped, nested heating track sections.

Fig.2C zeigt eine Flächenheizung 2c mit zwei Kontaktstellen 4, welche an gegenüberliegenden Randbereichen der Flächenheizung 2c angeordnet sind. Die Kontaktstellen 4 sind mittels einer eckig mäanderförmig verlaufenden Heizbahn 3c miteinander verbunden. Figure 2C shows a surface heating 2c with two contact points 4, which are arranged on opposite edge regions of the surface heating 2c. The contact points 4 are connected to one another by means of an angular, meandering heating track 3c.

Fig.3 zeigt eine mögliche elektrische Kontaktierung einer Flächenheizung 2 oder 2a bis 2c. Die Flächenheizung 2, 2a - 2c ist innenseitig an einer Oberseite eines Gehäuses 5 des Gargutträgers 1 angeordnet. Das Gehäuse 5 stellt somit einen Grundkörper für die Flächenheizung 2, 2a - 2c dar. Eine an einer dem Gehäuse 5 abgewandten Seite befindliche Kontaktstelle 4 der Flächenheizung 2, 2a - 2c wird mittels eines federnd gehalterten, elektrisch leitfähigen Kontaktstücks 6 kontaktiert. Das Kontaktstück 6 wird dazu mittels einer elektrisch leitfähigen Druckfeder 7 gegen die Kontaktstelle 4 gedrückt. Die Druckfeder wiederum ist elektrisch mit dem Anschlussstück 20 des Gargutträgers 1 verbunden. Somit kann ein elektrisches Signal (Versorgungsstrom, Datensignal usw.) von dem Anschlussstück 20 über die Druckfeder 7 und das Kontaktstück 6 zu der Kontaktstelle 4 gelangen, oder umgekehrt. Diese Kontaktierung ist insbesondere für einen Gargutträger 1 vorteilhaft, bei dem das Gehäuse 5 die Flächenheizung 2 oder 2a - 2c umgibt und welches ein zusammensetzbares Gehäuseoberteil und Gehäuseunterteil aufweist, da so eine besonders einfache Kontaktierung ohne Nachbearbeitung ermöglicht wird. Fig.3 shows a possible electrical contact of a panel heater 2 or 2a to 2c. The surface heating 2, 2a - 2c is arranged on the inside on an upper side of a housing 5 of the food support 1 . The housing 5 thus represents a base body for the panel heating 2, 2a-2c. For this purpose, the contact piece 6 is pressed against the contact point 4 by means of an electrically conductive compression spring 7 . The compression spring in turn is electrically connected to the connection piece 20 of the food support 1 . An electrical signal (supply current, data signal, etc.) can thus reach the contact point 4 from the connection piece 20 via the compression spring 7 and the contact piece 6, or vice versa. This contacting is particularly advantageous for a food support 1 in which the housing 5 surrounds the surface heating 2 or 2a-2c and which has an upper and lower housing part that can be assembled, since this enables particularly simple contacting without post-processing.

Fig.4 zeigt als Schnittdarstellung in Seitenansicht einen weiteren möglichen Aspekt einer Ausgestaltung des Gargutträgers 1, die nicht Teil der Erfindung ist. Das Gehäuse 5 des Gargutträgers 1 umfasst ein Gehäuseoberteil 5o und ein Gehäuseunterteil 5u, welche randseitig aufeinandergesetzt und verbunden sind. Das Gehäuseoberteil 5o weist einen Grundkörper aus beispielsweise Edelstahl auf, wobei außenseitig beispielsweise eine Emailleschicht vorhanden sein kann. Fig.4 shows a sectional side view of another possible aspect of an embodiment of the food support 1, which is not part of the invention. The housing 5 of the food support 1 comprises an upper housing part 5o and a lower housing part 5u, which are placed one on top of the other and connected at the edge. The upper housing part 5o has a base body made of stainless steel, for example, with an enamel layer being able to be present on the outside, for example.

Das Gehäuseoberteil 5o weist ferner eine Gargutauflagefläche in Form einer schalenförmigen Vertiefung 8 auf. Die Flächenheizung 2 oder 2a - 2c ist an einer Unterseite der schalenförmigen Vertiefung 8 angebracht, welche einer Innenseite des Gehäuses 5 entspricht.The upper housing part 5o also has a support surface for the food to be cooked in the form of a bowl-shaped depression 8 . The surface heater 2 or 2a - 2c is attached to an underside of the bowl-shaped depression 8 which corresponds to an inside of the housing 5 .

Die Verwendung von Edelstahl für das Gehäuseoberteil 5o weist den Vorteil auf, dass eine mechanisch (z.B. gegenüber einer Beanspruchung durch Besteck usw.), thermisch (z.B. gegenüber der Flächenheizung 2, 2a - 2c) und chemisch (z.B. gegenüber einem Reinigungsmittel) widerstandsfähige Vertiefung 8 oder Gargutauflage bereitgestellt wird. Da Edelstahl elektrisch leitend ist, ist die Flächenheizung 2 oder 2a - 2c mehrlagig aufgebaut. So wird zwischen der schichtförmigen Heizbahn 3 oder 3a - 3c und dem Gehäuseoberteil 5o aus Edelstahl eine elektrisch isolierende Isolierungsschicht 9 eingefügt. Zur seitlichen oder horizontalen Wärmespreizung ist zwischen der Isolierungsschicht 9 und dem Gehäuseoberteil 5o eine Wärmespreizungsschicht 10 eingebracht.The use of stainless steel for the housing upper part 5o has the advantage that a mechanically (e.g. against stress from cutlery, etc.), thermally (e.g. against the surface heating 2, 2a - 2c) and chemically (e.g. against a cleaning agent) resistant depression 8 or food support is provided. Since stainless steel is electrically conductive, the surface heating 2 or 2a - 2c is constructed in several layers. An electrically insulating insulation layer 9 is thus inserted between the layered heating track 3 or 3a-3c and the housing upper part 5o made of stainless steel. For lateral or horizontal heat spreading, a heat spreading layer 10 is introduced between the insulating layer 9 and the upper housing part 5o.

Die elektrisch isolierende Isolierungsschicht 9 kann beispielsweise aus Aluminiumoxid bestehen, die Wärmespreizungsschicht 10 kann z.B. aus Aluminium bestehen und die Heizbahn 3 oder 3a - 3c kann z.B. aus CrNi oder einem mit Kohlenstoffnanoröhrchen versetzten glasartigen Material bestehen. Die Heizbahn 3 oder 3a - 3c kann z.B. im Mittel 25 bis 50 Mikrometer dick sein, während die elektrisch isolierende Isolierungsschicht 9 und die Heizbahn 3 oder 3a - 3c zusammen vorzugsweise eine Dicke von nicht mehr als 700 Mikrometern aufweisen. Die elektrisch isolierende Isolierungsschicht 9 und die Heizbahn 3 oder 3a - 3c können beispielsweise durch Plasmaspritzen oder Siebdruck aufgebracht werden.The electrically insulating insulation layer 9 can be made of aluminum oxide, for example, the heat spreading layer 10 can be made of aluminum, for example, and the heating track 3 or 3a - 3c can be made of CrNi or a vitreous material loaded with carbon nanotubes, for example. The heating track 3 or 3a - 3c can for example have an average thickness of 25 to 50 microns, while the electrically insulating insulation layer 9 and the heating track 3 or 3a - 3c together preferably have a thickness of not more than 700 microns. The electrically insulating insulation layer 9 and the heating track 3 or 3a-3c can be applied, for example, by plasma spraying or screen printing.

Das Gehäuseunterteil 5u weist keine Flächenheizung oder sonstige Heizung auf, so dass der Gargutträger 1, der als ein Garraumteiler ausgebildet ist, insbesondere als eine mobile Unterhitze (und/oder als ein beheizbarer Gargutträger) einsetzbar ist. Das Gehäuseunterteil 5u kann aus einem thermisch und/oder mechanisch weniger widerstandsfähigen Material als Edelstahl bestehen, z.B. aus Kunststoff oder Aluminium.The lower housing part 5u has no surface heating or other heating, so that the food support 1, which is designed as a cooking chamber divider, can be used in particular as a mobile bottom heater (and/or as a heatable food support). The lower housing part 5u can be made of a material that is less thermally and/or mechanically resistant than high-grade steel, e.g. made of plastic or aluminum.

Um eine Lebensdauer der Flächenheizung 2, 2a - 2c zu verlängern, ist als eine äußere Schicht auf die Heizbahn 3 oder 3a - 3c noch eine Schutzschicht 13 aufgebracht.In order to extend the service life of the surface heating 2, 2a-2c, a protective layer 13 is also applied as an outer layer to the heating track 3 or 3a-3c.

Um das Gehäuseunterteil 5u thermisch von der Flächenheizung zu entkoppeln, kann in einem durch das Gehäuseoberteil 5o und das Gehäuseunterteil 5u gebildeten Innenraum 11 Wärmeisolierungsmaterial zwischen der Flächenheizung 2, 2a - 2c und dem Gehäuseunterteil 5u untergebracht sein.In order to thermally decouple the lower housing part 5u from the surface heating, thermal insulation material can be accommodated between the surface heating 2, 2a-2c and the lower housing part 5u in an interior space 11 formed by the upper housing part 5o and the lower housing part 5u.

Alternativ oder zusätzlich kann das Gehäuseoberteil 5o mehrschichtig oder mehrlagig aufgebaut sein, wobei insbesondere eine der Flächenheizung zugewandte Seite des Gehäuseoberteils 5o durch eine Wärmespreizungsschicht, z.B. aus Aluminium, gebildet wird und eine der Flächenheizung abgewandte Seite durch eine harte Gebrauchsschicht, z.B. aus Edelstahl.Alternatively or additionally, the upper housing part 5o can have a multi-layer or multi-layered structure, with a side of the upper housing part 5o facing the surface heating being formed by a heat spreading layer, e.g. made of aluminum, and a side facing away from the surface heating being formed by a hard wear layer, e.g. made of stainless steel.

Fig.5A bis 5D zeigen als Schnittdarstellung in Seitenansicht einen Ausschnitt aus einem Gargutträger 1, dessen randseitiger Verschlussbereich unter Verwendung eines Dichtelements unterschiedlich gestaltet ist. Figures 5A to 5D show a sectional side view of a section of a food support 1 whose edge closure area is designed differently using a sealing element.

Fig.5A zeigt einen möglichen Kontaktbereich oder Verschlussbereich 13a zur Verheiratung oder Verbindung des Gehäuseoberteils 5o mit dem Gehäuseunterteil 5u. Dabei weist sowohl das Gehäuseoberteil 5o als auch das Gehäuseunterteil 5u einen seitlich nach Außen abstehenden Rand 14a bzw. 15a auf. Der Rand 14a des Gehäuseoberteils 5o und der Rand 15a des Gehäuseunterteils 5u liegen flächig aufeinander auf. Der Rand 15a weist eine Rinne oder Nut 16 zur teilweisen Aufnahme eines Dichtelements 17, hier: einer Silikondichtung, auf. Der Rand 14a ist an seinem freien Ende nach unten umgebogen. Sind die Ränder 14a und 15a flächig aufeinander aufgesetzt, ist das Dichtelement 17 dazwischen eingepresst und bewirkt eine effektive Abdichtung des Innenraums 11, z.B. gegen Spülwasser und Dampf. Die Ränder 14a und 15a können miteinander zumindest punktförmig kraftschlüssig, formschlüssig oder stoffschlüssig (z.B. durch Verschweißen oder Verkleben) verbunden sein. So können beispielsweise die freien Kanten der Ränder 14a und 15a miteinander verschweißt sein. Figure 5A shows a possible contact area or closure area 13a for marriage or connection of the upper housing part 5o to the lower housing part 5u. Both the upper housing part 5o and the lower housing part 5u have a laterally outwardly protruding edge 14a or 15a. The edge 14a of the upper housing part 5o and the edge 15a of the lower housing part 5u lie flat on one another. The edge 15a has a channel or groove 16 for partially accommodating a sealing element 17, here: a silicone seal. The edge 14a is bent downwards at its free end. If the edges 14a and 15a are placed flat on one another, the sealing element 17 is pressed in between and effectively seals off the interior 11, for example against flushing water and steam. The edges 14a and 15a can be connected to one another at least at certain points in a non-positive, positive or material connection (for example by welding or gluing). For example, the free edges of the rims 14a and 15a can be welded together.

Fig.5B zeigt einen Verschlussbereich 13b, bei dem im Gegensatz zu dem Verschlussbereich 13a der Rand 15b des Gehäuseunterteils 5u in Richtung des Innenraums 11 gebogen ist. Dadurch kann der Innenraum 11 vergrößert und eine seitliche Ausdehnung des Verschlussbereichs 13b verringert werden. Der Rand 14b des Gehäuseoberteils 5o ist an seiner freien Kante weiterhin nach unten umgebogen. Figure 5B shows a closure area 13b in which, in contrast to the closure area 13a, the edge 15b of the lower housing part 5u is bent in the direction of the interior 11. As a result, the interior 11 can be enlarged and a lateral expansion of the closure area 13b can be reduced. The edge 14b of the housing upper part 5o is further bent down at its free edge.

Fig.5C zeigt einen Verschlussbereich 13c, bei dem im Gegensatz zu dem Verschlussbereich 13a das freie Ende des Rands 15c des Gehäuseunterteils 5u senkrecht auf den ebenen Bereich des Rands 14c des Gehäuseoberteils 5o stößt. Dadurch wird die Kontaktfläche zwischen dem Gehäuseoberteil 5o und dem Gehäuseunterteil 5u im Wesentlichen linienförmig, was eine verbesserte thermische Entkopplung zwischen dem Gehäuseoberteil 5o und dem Gehäuseunterteil 5u ermöglicht. Der Rand 15c weist ferner keine Nut 16 mehr auf. Vielmehr ist das Dichtelement 17 zwischen horizontalen Bereichen der Ränder 14c und 15c eingeklemmt. Der Rand 14c des Gehäuseoberteils 5o ist auch hier an seinem freien Ende nach unten umgebogen. Figure 5C shows a closure area 13c in which, in contrast to the closure area 13a, the free end of the edge 15c of the lower housing part 5u perpendicularly abuts the flat area of the edge 14c of the upper housing part 5o. As a result, the contact surface between the upper housing part 5o and the lower housing part 5u is essentially linear, which enables improved thermal decoupling between the upper housing part 5o and the lower housing part 5u. Furthermore, the edge 15c no longer has a groove 16 . Rather, the sealing element 17 is clamped between horizontal areas of the edges 14c and 15c. The edge 14c of the housing upper part 5o is also bent down at its free end.

Fig.5D zeigt einen Verschlussbereich 13d, bei dem nun der Rand 14d des Gehäuseoberteils 5o und der Rand 15d des Gehäuseunterteils 5u durch ein Dichtelement in Form eines bandförmigen Gleiters 18 voneinander getrennt sind und diesen zwischen sich einklemmen. Der Gleiter 18 ist mit dem Rand 14d und/oder mit dem Rand 15d verklebt. Durch den Gleiter 18 wird eine noch effektivere thermische Entkopplung zwischen dem Gehäuseoberteil 5o und dem Gehäuseunterteil 5u erreicht. Figure 5D shows a closure area 13d in which the edge 14d of the upper housing part 5o and the edge 15d of the lower housing part 5u are separated from one another by a sealing element in the form of a strip-shaped slider 18 and clamp it between them. The slider 18 is glued to the edge 14d and/or to the edge 15d. By the slider 18 is still achieves more effective thermal decoupling between the upper housing part 5o and the lower housing part 5u.

Fig.6A bis 6C zeigen als Schnittdarstellung in Seitenansicht einen Ausschnitt aus einem Gargutträger 1 mit nochmals unterschiedlichen Ausgestaltungen seines randseitigen Verschlussbereichs, und zwar nun ohne Verwendung eines Dichtelements 17 oder 18. Figures 6A to 6C show a sectional side view of a section of a food support 1 with different configurations of its edge-side closure area, now without the use of a sealing element 17 or 18.

Fig.6A zeigt beispielsweise einen Verschlussbereich 13e, bei dem der Rand 14e des Gehäuseoberteils 5o und der Rand 15e des Gehäuseunterteils 5u einfach flächig ausgebildet und aufeinander aufliegend angeordnet sind. Die freien Enden oder Kanten der Ränder 14e und 15e sind flächenbündig und durch eine umlaufende Schweißnaht 19 miteinander stoffschlüssig verbunden. Eine solche Verbindung ist besonders einfach herstellbar. Figure 6A shows, for example, a closure area 13e, in which the edge 14e of the housing upper part 5o and the edge 15e of the housing lower part 5u are formed in a simple planar manner and are arranged so that they rest on one another. The free ends or edges of the rims 14e and 15e are flush and connected to one another by a circumferential weld seam 19 in a materially bonded manner. Such a connection is particularly easy to produce.

Fig.6B zeigt einen Verschlussbereich 13f, bei dem der Rand 14f des Gehäuseoberteils 5o um den Rand 15f des Gehäuseunterteils 5u eng umgeschlagen oder gebördelt ist, wobei eine ausreichende Dichtigkeit durch den Kraftschluss zwischen den Rändern 14f und 15f erreicht wird. Eine solche Verbindung weist den Vorteil auf, dass sie alleine durch eine Materialverformung erreichbar ist, also ohne ein Verschweißen oder Verkleben. Alternativ können die Ränder 14f und 15f zusätzlich noch verklebt oder punktgeschweißt sein. Figure 6B 13 shows a closure area 13f in which the edge 14f of the upper housing part 5o is tightly wrapped or crimped around the edge 15f of the lower housing part 5u, sufficient tightness being achieved by the frictional connection between the edges 14f and 15f. Such a connection has the advantage that it can be achieved solely by deforming the material, ie without welding or gluing. Alternatively, the edges 14f and 15f can also be glued or spot-welded.

Fig.6C zeigt einen Verschlussbereich 13g, bei dem der Rand 14g des Gehäuseoberteils 5o um den Rand 15g des Gehäuseunterteils 5u weit umgeschlagen oder gebördelt ist. Eine ausreichende Dichtigkeit und Festigkeit wird durch eine umlaufende Schweißnaht 19 in einem Bereich einer freien Kante des Rands 14g erreicht. Figure 6C shows a closure area 13g in which the edge 14g of the upper housing part 5o is folded over or crimped wide around the edge 15g of the lower housing part 5u. Adequate tightness and strength is achieved by a circumferential weld seam 19 in an area of a free edge of the rim 14g.

Fig.7A bis 7C zeigen als Schnittdarstellung in Seitenansicht Gargutträger gemäß einer jeweiligen weiteren Ausführungsform. Figures 7A to 7C show a sectional side view of the food carrier according to a respective further embodiment.

Fig.7A zeigt einen aktiv beheizbaren Gargutträger 21a, der nicht Teil der vorliegenden Erfindung ist, mit einem Grundkörper 22 in Form einer Platte. Der Grundkörper 22 weist eine mittige Vertiefung 23 als die Gargutauflagefläche auf (oder stellt die Vertiefung 23 die Gargutauflagefläche), z.B. ähnlich zu einem Backblech. Die Vertiefung 23 weist einen im Wesentlichen ebenen Boden 24 und eine umlaufende Seitenwand 25 oder Seitenrand auf, welche an einem im Profil gebogenen Übergangsbereich 26 ineinander übergehen. Die Flächenheizung, z.B. 2, 2a - 2c, ist an einer Unterseite des Bodens 24 angeordnet. Die Flächenheizung 2, 2a - 2c ist nun nicht in einem Innenraum eines Gehäuses dicht untergebracht, sondern der Umgebung ausgesetzt. Durch die Wärmespreizungsschicht der Flächenheizung 2, 2a - 2c wird Wärme hochgradig gleichmäßig auf den Boden 24 übertragen, so dass an dem Boden 24 aufliegendes Gargut gleichmäßig erwärmbar ist. Nur ein Randbereich der Vertiefung 23, einschließlich des Bodens 24, kann aufgrund einer Wärmeabfuhr auf die Seitenwand 25 eine geringere Temperatur aufweisen. Figure 7A shows an actively heatable food support 21a, which is not part of the present invention, with a base body 22 in the form of a plate. The base body 22 has a central recess 23 as the surface to be cooked (or the recess 23 is the surface to be cooked), for example similar to a baking tray. The recess 23 has a substantially flat bottom 24 and a peripheral side wall 25 or side edge, which merge into one another at a transition area 26 that is curved in profile. The surface heating, eg 2, 2a - 2c, is arranged on an underside of the floor 24. The surface heating 2, 2a - 2c is now not tightly housed in an interior of a housing, but exposed to the environment. The heat spreading layer of the surface heating 2, 2a-2c transfers heat very evenly to the base 24, so that food to be cooked lying on the base 24 can be heated evenly. Only an edge area of the depression 23, including the base 24, can have a lower temperature due to heat dissipation to the side wall 25.

Insbesondere, falls der Grundkörper 22 aus einem einfachen Blech, z.B. Edelstahlblech, besteht, kann der Boden 24 geprägt und/oder bombiert sein, um eine unterschiedliche Wärmeausdehnung des Grundkörpers 22 und der Flächenheizung 2, 2a - 2c zu berücksichtigen.In particular, if the base body 22 consists of a simple sheet metal, e.g.

Fig.7B zeigt einen beheizbaren Gargutträger 21b ähnlich dem Gargutträger 21a, wobei die Flächenheizung, z.B. 2, 2a - 2c sich nun über den Übergangsbereich 26 bis auf die umlaufende Seitenwand 25 erstreckt. Dadurch kann auch der Randbereich der Vertiefung 23 gleichmäßig erwärmt werden, was beispielsweise bei einer Zubereitung von flächigem Gargut wie Pizzateig, Kuchen usw. besonders vorteilhaft ist. Figure 7B shows a heatable food support 21b similar to the food support 21a, with the surface heating, for example 2, 2a-2c, now extending over the transition area 26 to the peripheral side wall 25. As a result, the edge area of the depression 23 can also be heated evenly, which is particularly advantageous, for example, when preparing flat items to be cooked such as pizza dough, cakes, etc.

Fig.7C zeigt einen beheizbaren Gargutträger 21c, der nicht Teil der vorliegenden Erfindung ist, ähnlich dem Gargutträger 21b, wobei die Flächenheizung, z.B. 2, 2a - 2c sich nun nicht über den Übergangsbereich 26 erstreckt, sondern nur an dem Boden 24 und an der umlaufenden Seitenwand 25 erstreckt, ggf. mit einer oder mehreren Querungen einer Heizbahn an dem Übergangsbereich 26. Dadurch wird eine Aufbringung der Flächenheizung 2, 2a - 2c erleichtert, da auf eine Aufbringung auf gekrümmte Oberflächen verzichtet wird. Anstelle der einen Flächenheizung 2, 2a - 2c können auch separate Flächenheizungen für den Boden 24 und die Seitenwand 25 verwendet werden. Figure 7C shows a heatable food support 21c, which is not part of the present invention, similar to the food support 21b, wherein the surface heating, e.g. 2, 2a - 2c, does not extend over the transition area 26, but only on the bottom 24 and on the peripheral side wall 25 extends, possibly with one or more crossings of a heating track at the transition area 26. This makes it easier to apply the surface heating 2, 2a-2c, since there is no need to apply it to curved surfaces. Instead of a panel heater 2, 2a - 2c, separate panel heaters for the bottom 24 and the side wall 25 can be used.

Die vorliegende Erfindung wird durch den Umfang der Ansprüche beschränkt und ist somit nicht auf die gezeigten Ausführungsbeispiele beschränkt.The present invention is limited by the scope of the claims and thus is not limited to the embodiments shown.

So können, innerhalb des Umfangs der Ansprüche, passende Merkmale der gezeigten Ausführungsbeispiele miteinander kombiniert oder gegeneinander ausgetauscht werden. Beispielsweise kann der Schichtaufbau der Flächenheizung für sämtliche Flächenheizungen 2, 2a - 2c verwendet werden. Auch können der Schichtaufbau und/oder die Führung der Heizbahn der Flächenheizung sowohl für Gargutträger mit einer umschlossenen Flächenheizung als auch mit einer offenen Flächenheizung verwendet werden.
Der Grundkörper im Bereich der Gargutauflagefläche kann außer aus Edelstahl z.B. auch aus Glas oder Glaskeramik bestehen.Thus, within the scope of the claims, suitable features of the exemplary embodiments shown can be combined with one another or substituted for one another. For example, the layer structure of the surface heating for all surface heating 2, 2a - 2c are used. The layer structure and/or the routing of the heating track of the surface heating can also be used both for food supports with an enclosed surface heating and with an open surface heating.
The base body in the area of the food support surface can also consist of glass or glass ceramic, for example, in addition to stainless steel.

BezugszeichenlisteReference List

11
Gargutträgerfood carrier
22
Flächenheizungpanel heating
2a2a
Flächenheizungpanel heating
2b2 B
Flächenheizungpanel heating
2c2c
Flächenheizungpanel heating
33
Heizbahnheating track
3a3a
Heizbahnheating track
3b3b
Heizbahnheating track
3c3c
Heizbahnheating track
44
Kontaktstellecontact point
55
GehäuseHousing
5o5o
Gehäuseoberteilhousing top
5u5u
Gehäuseunterteilhousing base
66
Kontaktstückcontact piece
77
Druckfedercompression spring
88th
Vertiefungdeepening
99
elektrisch isolierende Isolierungsschichtelectrically insulating insulation layer
1010
Wärmespreizungsschichtheat spreading layer
1111
Innenrauminner space
1212
Schutzschichtprotective layer
13a-g13a-g
Verschlussbereichclosure area
14a-g14a-g
Rand des Gehäuseoberteilsedge of the case top
15a-g15a-g
Rand des Gehäuseunterteilsedge of the case bottom
1616
Nutgroove
1717
Dichtelementsealing element
1818
Gleiterglider
1919
SchweißnahtWeld
2020
Anschlusselementconnection element
21a21a
Gargutträgerfood carrier
21 b21 b
Gargutträgerfood carrier
21c21c
Gargutträgerfood carrier
2222
Grundkörperbody
2323
Vertiefungdeepening
2424
Bodenfloor
2525
SeitenwandSide wall
2626
Übergangsbereichtransition area
BB
Gargerätcooking appliance
GG
Garraumcooking chamber
MM
Muffelmuffle
TT
Garraumtürcooking chamber door
SS
Garraumwandcooking chamber wall
RR
Rückwandback panel
KK
Anschlussgegenelementconnection mating element

Claims (8)

  1. Carrier for food to be cooked (1; 21a-c), having a base body (5; 5o; 22), on the upper side of which there is provision for a contact surface for food to be cooked (8; 23), and having at least one heater (2; 2a - 2c) for heating the contact surface for food to be cooked (8; 23), wherein the at least one heater (2; 2a - 2c) is at least one surface heater (2; 2a - 2c) attached to the base body (5; 5o; 8) at least in the region of the contact surface for food to be cooked, and the surface heater (2; 2a - 2c) has an electrically insulating insulation layer (9), wherein
    - the at least one surface heater (2; 2a - 2c) has at least one metallic heat dissipation layer (10) between a heat conductor layer (3; 3a - 3c) of the surface heater (2; 2a - 2c) and the base body (5; 5o; 22) and wherein
    - the electrically insulating insulation layer (9) (2; 2a - 2c) is arranged between the heat conductor layer (3; 3a - 3c) and the heat dissipation layer (10),
    characterised in that
    - the contact surface for food to be cooked (23 - 26) is formed by at least one part of an indentation (23) of the carrier for food to be cooked (21b) on the upper side and at least one surface heater (2; 2a - 2c) extends from a bottom (24) of the indentation (23) up to and including a side edge (25) of the indentation (23).
  2. Carrier for food to be cooked (1; 21a - 21c) according to claim 1, characterised in that the material of at least one heat dissipation layer (10) has a thermal conductivity of more than 100 W/(m·K).
  3. Carrier for food to be cooked (1; 21a - 21c) according to one of the preceding claims, characterised in that at least one heat dissipation layer (10) contains aluminium.
  4. Carrier for food to be cooked (1; 21a - 21c) according to one of the preceding claims, characterised in that the base body (5; 5o; 22) is a multi-layer element, which is formed in the region of the contact surface for food to be cooked (8; 23), in particular the contact surface for food to be cooked (8; 23) thereof, by means of a layer of stainless steel, glass or glass ceramics.
  5. Carrier for food to be cooked (1) according to one of the preceding claims, characterised in that the carrier for food to be cooked (1) has a two-part housing (5, 5o, 5u) with a housing upper part (5o) and a housing lower part (5u), wherein
    - the housing upper part (5o) and the housing lower part (5u) are tightly connected to one another and are mounted so as to be laterally displaceable with respect to one another,
    - the contact surface for food to be cooked (8) and the at least one surface heater (2; 2a - 2c) are present on the housing upper part (5o) and
    - particular base bodies of the housing upper part (5o) and of the housing lower part (5u) consist of different materials.
  6. Carrier for food to be cooked (1; 21a - 21c) according to one of the preceding claims, characterised in that the carrier for food to be cooked (1; 21a - 21c) is provided for operation at a maximal power of no more than approx. 1000 W.
  7. Carrier for food to be cooked (1; 21a - 21c) according to one of the preceding claims, characterised in that the carrier for food to be cooked (1; 21a - 21c) is provided for operation at a maximal temperature at the contact surface for food to be cooked (8; 23) of no more than approx. 200 °C.
  8. Carrier for food to be cooked (1; 21a-21c) according to one of the preceding claims, characterised in that the carrier for food to be cooked (1; 21a - 21c) is a slide-in carrier for food to be cooked (1; 21a - 21c) for standalone use in a cooking chamber (G) of a cooking appliance (B).
EP11793401.8A 2010-12-07 2011-12-01 Carrier for food to be cooked Active EP2649377B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102010062503A DE102010062503A1 (en) 2010-12-07 2010-12-07 food support
PCT/EP2011/071544 WO2012076399A1 (en) 2010-12-07 2011-12-01 Carrier for food to be cooked

Publications (3)

Publication Number Publication Date
EP2649377A1 EP2649377A1 (en) 2013-10-16
EP2649377B1 EP2649377B1 (en) 2016-08-10
EP2649377B2 true EP2649377B2 (en) 2022-11-16

Family

ID=45217536

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11793401.8A Active EP2649377B2 (en) 2010-12-07 2011-12-01 Carrier for food to be cooked

Country Status (4)

Country Link
EP (1) EP2649377B2 (en)
DE (1) DE102010062503A1 (en)
PL (1) PL2649377T5 (en)
WO (1) WO2012076399A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013206219A1 (en) * 2013-04-09 2014-10-09 BSH Bosch und Siemens Hausgeräte GmbH Cooking chamber divider for a cooking appliance and cooking appliance with such a cooking space divider
DE102014112589B4 (en) * 2014-09-02 2022-05-05 Miele & Cie. Kg Cooking device and method of operation
EP4282273A3 (en) * 2022-05-25 2024-05-15 BSH Hausgeräte GmbH An oven device

Citations (4)

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US3010006A (en) † 1953-10-02 1961-11-21 Webcor Inc Cooking utensil
US3043943A (en) † 1959-12-24 1962-07-10 Cornwall Corp Food warmer
US3245462A (en) † 1963-08-01 1966-04-12 Speedster Inc Heavy duty griddle top
US5413032A (en) † 1994-08-18 1995-05-09 The Middleby Corporation Restaurant type griddle with modular construction and which is load sensitive

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GB992571A (en) * 1960-04-14 1965-05-19 Eisler Paul Heating packages
FR2380682A1 (en) * 1977-02-11 1978-09-08 Pintard Charlie Flat heating surface for domestic ovens - has two independent elements and is used for pizza preparation with high temp. at edge of plate
NL8104739A (en) * 1981-10-19 1983-05-16 Atag Bv Apparatenfab Domestic oven with internally-heated baking tray - insertable at different heights where sockets on oven wall provide power for internal elements
DE3722617C1 (en) * 1987-07-09 1988-10-06 Bauknecht Hausgeraete Electrically heated baking mat
DE4217545A1 (en) 1992-05-27 1993-12-02 Licentia Gmbh Electric baking and roasting oven
US6265695B1 (en) * 1997-01-31 2001-07-24 Benno Liebermann Food thermalization device and method
DE19961781C2 (en) * 1999-12-21 2003-07-24 Bsh Bosch Siemens Hausgeraete Laminatable heating film with high temperature resistance and method for applying such a heating film on a carrier material
US20020043525A1 (en) * 2001-02-12 2002-04-18 Keith Laken Formable thermoplastic laminate heating tray assembly suitable for heating frozen food
DE10258727A1 (en) * 2002-12-05 2004-06-24 Schott Glas oven
KR100526206B1 (en) * 2003-03-21 2005-11-08 삼성전자주식회사 Cooking Apparatus
AU2005295542B2 (en) * 2004-10-15 2010-06-17 Duke Manufacturing Company A food serving bar

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3010006A (en) † 1953-10-02 1961-11-21 Webcor Inc Cooking utensil
US3043943A (en) † 1959-12-24 1962-07-10 Cornwall Corp Food warmer
US3245462A (en) † 1963-08-01 1966-04-12 Speedster Inc Heavy duty griddle top
US5413032A (en) † 1994-08-18 1995-05-09 The Middleby Corporation Restaurant type griddle with modular construction and which is load sensitive

Also Published As

Publication number Publication date
WO2012076399A1 (en) 2012-06-14
PL2649377T3 (en) 2017-01-31
EP2649377B1 (en) 2016-08-10
PL2649377T5 (en) 2023-03-27
EP2649377A1 (en) 2013-10-16
DE102010062503A1 (en) 2012-06-14

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