EP3598848B2 - Cooking hob - Google Patents

Cooking hob Download PDF

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Publication number
EP3598848B2
EP3598848B2 EP19185136.9A EP19185136A EP3598848B2 EP 3598848 B2 EP3598848 B2 EP 3598848B2 EP 19185136 A EP19185136 A EP 19185136A EP 3598848 B2 EP3598848 B2 EP 3598848B2
Authority
EP
European Patent Office
Prior art keywords
heating
partial
heating devices
1tha
carrier
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.)
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Application number
EP19185136.9A
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German (de)
French (fr)
Other versions
EP3598848B1 (en
EP3598848A1 (en
Inventor
Jochen Rickert
Volker Block
Marcus Frank
Gabriel Rupp
Tilo Fucik
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
EGO Elektro Geratebau GmbH
Original Assignee
EGO Elektro Geratebau GmbH
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Application filed by EGO Elektro Geratebau GmbH filed Critical EGO Elektro Geratebau GmbH
Priority to PL19185136.9T priority Critical patent/PL3598848T5/en
Publication of EP3598848A1 publication Critical patent/EP3598848A1/en
Application granted granted Critical
Publication of EP3598848B1 publication Critical patent/EP3598848B1/en
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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24CDOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C7/00Stoves or ranges heated by electric energy
    • F24C7/08Arrangement or mounting of control or safety devices
    • F24C7/082Arrangement or mounting of control or safety devices on ranges, e.g. control panels, illumination
    • F24C7/083Arrangement or mounting of control or safety devices on ranges, e.g. control panels, illumination on tops, hot plates
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05BELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00Ohmic-resistance heating
    • H05B3/68Heating arrangements specially adapted for cooking plates or analogous hot-plates
    • H05B3/74Non-metallic plates, e.g. vitroceramic, ceramic or glassceramic hobs, also including power or control circuits
    • H05B3/748Resistive heating elements, i.e. heating elements exposed to the air, e.g. coil wire heater
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24CDOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C7/00Stoves or ranges heated by electric energy
    • F24C7/04Stoves or ranges heated by electric energy with heat radiated directly from the heating element
    • F24C7/046Ranges
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24CDOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C7/00Stoves or ranges heated by electric energy
    • F24C7/06Arrangement or mounting of electric heating elements
    • F24C7/067Arrangement or mounting of electric heating elements on ranges
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05BELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B2206/00Aspects relating to heating by electric, magnetic, or electromagnetic fields covered by group H05B6/00
    • H05B2206/02Induction heating
    • H05B2206/022Special supports for the induction coils
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05BELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B2213/00Aspects relating both to resistive heating and to induction heating, covered by H05B3/00 and H05B6/00
    • H05B2213/03Heating plates made out of a matrix of heating elements that can define heating areas adapted to cookware randomly placed on the heating plate

Definitions

  • the invention relates to a hob with several heating devices.
  • a well-known and very proven technology for heating devices in hobs is radiant heating devices.
  • Such heating devices are, for example, from the DE 3613902 A1 in detail.
  • a hob is provided with several identical heating devices, each with a rectangular support on which heating elements are arranged, preferably two heating elements, each with a heating conductor.
  • the heating conductors here run in an interlocking, angular spiral shape within a jointly formed heating surface, which is delimited by a circumferential, upward-standing outer edge of the support.
  • Several of these heating devices for example four heating devices, can be arranged relatively close to one another in the hob in order to achieve heating that is as seamless as possible or to use the hob surface as well as possible.
  • a grill plate is known that is divided into a number of individual fields of equal size. Each individual field has a spiral-shaped tubular heating element attached to the underside.
  • a flat heating unit which has two heating elements running in a meandering pattern.
  • the heating elements are designed as strip-shaped heating resistors and can be made of a metal alloy with a high platinum content, for example.
  • EP 2 133 012 B1 is a cooking device with a flat support and several regularly arranged heating elements under a cooking surface that can be used as a grill.
  • the rectangular heating elements are thick-film heating elements and are all the same size.
  • Another cooking device is known with a large continuous heating plate under which several heating elements are arranged.
  • the heating elements have different shapes and can be tubular heating elements, for example.
  • the invention is based on the object of creating a cooking surface provided with heating devices with which problems of the prior art can be solved and, in particular, it is possible to realize advantageous heating types with cooking vessels of different sizes on the cooking surface.
  • the heating device has a flat support with an outer edge.
  • This flat support can advantageously be flat, but does not have to be.
  • the outer edge can also be raised, but this is not mandatory either. In any case, the outer edge limits the support on the outside.
  • the support has an essentially rectangular shape, in particular with slightly rounded or bevelled corners. Opposite sides are advantageously parallel to one another.
  • the heating device also has at least two heating elements, advantageously arranged or attached to the support.
  • the heating elements each have at least one heating conductor and together form a heating surface that advantageously corresponds approximately to the surface of the support.
  • a heating element could also have two heating conductors. Heating elements or heating conductors generate radiant heat upwards during operation.
  • a heating conductor is advantageously defined by the fact that it has two ends and can be electrically connected or contacted to each of these for its operation. Furthermore, it is intended that the heating elements and/or the partial heating surfaces can be operated independently of one another. For this purpose, they can each have their own electrical connections or can be electrically contacted separately from one another. Some connections of several heating elements or partial heating surfaces can also be provided together, as is known per se for such heating devices as radiant heating devices.
  • the heating conductors are attached to the carrier, possibly partially embedded in an upper side of the carrier.
  • Each heating element defines a partial heating surface, advantageously exactly one single partial heating surface.
  • the heating device has at least two partial heating surfaces, advantageously exactly two partial heating surfaces. These partial heating surfaces lie within the rectangular shape of the carrier, specifically within the outer edge.
  • a partial heating surface is everywhere where a heating conductor of the associated heating element runs, i.e. it is defined by it in terms of area. It is therefore also advantageously provided that no heating conductors overlap or cross each other.
  • a first partial heating surface is rectangular. It extends with at least one of its outer sides to the outer edge of the carrier. or to an inner side of this outer edge if it is pulled upwards, as previously described. This at least one outer side of the partial heating surface also runs parallel to this outer edge, to which it extends directly or close to it.
  • the heating device has a second partial heating surface corresponding to a second heating element.
  • This second partial heating surface covers the rest of the carrier that is left free by the first partial heating surface.
  • the second partial heating surface is formed by more than one heating element or by more than one heating conductor, so that it can also be viewed as the sum of several further partial heating surfaces or is formed by several further partial heating surfaces.
  • the first partial heating surface is rectangular.
  • the area of the carrier that is still left free by the first partial heating surface is also covered by at least one heating element or at least one heating conductor and therefore also heats.
  • the invention makes it possible to create a heating device with a carrier that has at least one separately operable rectangular partial heating surface that is located on the edge of the carrier.
  • a heating device with a carrier that has at least one separately operable rectangular partial heating surface that is located on the edge of the carrier.
  • it can be operated very well together with further partial heating surfaces of another heating device that is arranged close to it, as a so-called bridge or bridged heating device for heating suitable cooking vessels, for example elongated oval roasting pans.
  • the heating elements or the heating conductors are resistance heating elements and are designed to glow or even light up slightly when in use. They therefore heat cooking vessels placed above them using their radiant heat output. This is also evident from the above-mentioned DE 3613902 A1 known.
  • the first partial heating surface with two of its outer sides which advantageously abut one another or form a corner with one another, each reach to the outer edge or to an inner side of the outer edge of the carrier. They also run parallel to it.
  • the first partial heating surface can therefore preferably be located in a corner or in a corner area of the carrier. Then it can not only be operated together with a single further partial heating surface of an adjacent heating device as the aforementioned bridge or bridged heating device, but also or alternatively with yet another partial heating surface of yet another heating device.
  • Four such heating devices can even be arranged in a square, and in the center, where four corners abut one another, four partial heating surfaces can also abut one another. Their corners are then only a short distance apart from each other, preferably less than 2 cm to 4 cm.
  • the adjacent and parallel first partial heating surfaces of the heating devices prefferably be congruent or parallel to one another over the same length. In this way, they create a common heating surface, which is in turn rectangular.
  • the first partial heating surface has a square shape.
  • an outer side of the first partial heating surface can have a length of between 100 mm and 200 mm, preferably between 110 mm and 150 mm. This results in a standard size for standard cooking vessel sizes, especially when two of them are to be used to heat an elongated oval roasting pan as mentioned above. Frequently used cooking vessels with a diameter of 150 mm have an inner square with an edge length of almost 110 mm. The aforementioned roasting pans often have a length of between 250 mm and 400 mm along their greater longitudinal extent. Here, too, the aforementioned square shape in the size mentioned fits well.
  • the second partial heating surface has an L-shape, so that the first partial heating surface lies in the inner angle formed thereby.
  • the first partial heating surface and the second partial heating surface together form a rectangular or square surface, covering the flat support up to its outer edge or up to its inner side.
  • the second partial heating surface can also be formed by several separately operable heating elements or heating conductors.
  • the second partial heating surface can preferably have legs of approximately the same width, which can, however, be of different lengths. The difference in length can be a factor of 1.2 to 2.5, advantageously 1.5 to 2.
  • a small rectangular area corresponding to the first partial heating surface can be heated separately, usually for a relatively small cooking vessel.
  • Operating the second partial heating surface alone will generally not make sense, since cooking vessels of a corresponding shape are not common.
  • a possible next larger area to be heated for a cooking vessel is advantageously the joint operation of the first partial heating surface and the second partial heating surface, and thus of the entire heating device. This can be used for medium-sized cooking vessels. be suitable.
  • a hob according to the invention offers a wide variety of options for assembling heated surfaces, which means that cooking vessels of different sizes or shapes can be heated as well, efficiently and quickly as possible.
  • the carrier itself to have a specifically square shape.
  • the first partial heating surface is also almost square or has a difference in its side lengths of a maximum of 10%.
  • at least one heating device according to the invention is square and at least one heating device according to the invention is rectangular. They can be arranged close to one another or next to one another in order to enable heating of as many different or variable surfaces as possible in combination.
  • an elongated temperature sensor or temperature limiter can be provided on the heating device, which runs above the heating elements or the heating conductors.
  • a temperature sensor or temperature limiter runs at least over the first partial heating surface, possibly also over the second partial heating surface. Since with such a heating device, as explained at the beginning, the first partial heating surface is always preferably operated, if the heating device is operated at all, it is protected against a potentially dangerously high temperature. If the temperature sensor or temperature limiter runs in an elongated form over the second partial heating surface, this can also be protected, so to speak.
  • the temperature sensor or temperature limiter can be compensated, as can be seen from the DE 3705260 A1 and above all the DE 102004058473 A1 is known through the use of different materials.
  • elongated temperature sensors or temperature limiters are known from the state of the art, they are also referred to as safety temperature limiters or rod regulators.
  • DE 3613902 A1 which also shows it.
  • Such an elongated temperature sensor or temperature limiter is advantageously a thermomechanical component and works with thermal expansion, whereby a switch is opened or closed at a certain expansion path corresponding to a certain temperature.
  • a power supply for the heating device or one of the heating elements or the heating conductor is automatically disconnected if the temperature detected is too high.
  • the elongated temperature sensor or temperature limiter runs from an outer edge of the carrier over at least half the extent of the carrier in the direction of the longitudinal direction of the temperature sensor or temperature limiter itself over at least the first partial heating surface.
  • the elongated temperature sensor or temperature limiter covers at least half the area of the first partial heating surface. It can be particularly advantageous for the elongated temperature sensor or temperature limiter to completely cover the first partial heating surface.
  • the temperature sensor or temperature limiter runs from an outer edge of the carrier to the opposite outer edge of the carrier, i.e. spans the entire carrier or its surface, so to speak. In this case, too, it should definitely run above the first partial heating surface so that it is protected against excessively high temperatures.
  • a small or point-shaped temperature sensor can be provided on the heating device, which is also arranged above or above at least the first partial heating surface.
  • a small or point-shaped temperature sensor can be pressed onto the underside of a hob plate of the hob and can measure the temperature directly here, since such rod regulators or safety temperature limiters are usually intended to monitor and limit a maximum temperature of the hob plate.
  • Such a small temperature sensor can be formed by a PTC resistor, an NTC resistor or a thermocouple, thus enabling direct temperature measurement.
  • Such small or point-shaped temperature sensors are evaluated electrically or electronically to determine a temperature signal, which can be used to determine whether a temperature is possibly too high.
  • combinations of the aforementioned elongated temperature sensors and small or point-shaped temperature sensors in particular with PTC resistors, NTC resistors or thermocouples, can also be formed.
  • any desired placement can be provided, or alternatively the small or point-shaped temperature sensors can be arranged on an elongated temperature sensor, for example clipped on.
  • another such small or point-shaped temperature sensor can be arranged in the area of the second partial heating surface. It can also be arranged above it or in the same way as the other temperature sensor in the area of the first partial heating surface.
  • electrical connections to a heating device are provided only on one side of the carrier, namely for all partial heating surfaces.
  • An aforementioned The temperature sensor or temperature limiter can be electrically contacted on this side.
  • the electrical connections of the first partial heating surface are spatially somewhat separated or at a distance from the electrical connections of a second partial heating surface.
  • Different so-called connection blocks or connection plug devices can also be provided. This makes the electrical connection easier when assembling the heating device or the hob.
  • the other sides of the heating device can then remain free of electrical connections that inevitably protrude beyond the outside or the outer edge. This creates the possibility that the heating devices can be arranged very close to one another on at least one, advantageously on two or even three sides, and can possibly even touch one another in order to achieve small gaps between them.
  • Electrical connections can advantageously be designed in a known manner with plug connections, advantageously plug connection lugs that protrude outwards from the heating device. Connection sections of the plug connection lugs can extend inwards so that the ends of the heating conductors can be welded to them.
  • heating devices can sometimes even be arranged so close to one another that their outer edges touch.
  • a non-heated area in between is as narrow as possible.
  • a raised outer edge of the support can even be thinner than in other areas where no other heating device is provided directly next to it or even touches it.
  • the thicknesses of two such touching thin outer edges add up, which in turn can create an overall sufficiently thick outer edge.
  • the lateral transfer of heat is not so disruptive here, since the neighboring heating device heated in this way is itself very temperature-resistant.
  • heating devices there are two types of heating devices that are mirror-symmetrical to one another. They can then be arranged next to one another in a hob according to the invention.
  • a center line running centrally between the two heating devices forms a mirror-symmetrical axis for the two heating devices.
  • the first partial heating surface of each heating device is arranged towards the neighboring heating device or its first partial heating surface, so that these two lie next to one another and can have a bridging function.
  • the rectangular heating devices according to the invention can also be combined with other heating devices that are round or oval.
  • a left or front area of the hob can be covered with rectangular heating devices on the one hand or round or oval heating devices on the other hand, and the other area with the differently shaped type of heating device.
  • heating devices of the same shape can be provided, in particular exclusively heating devices of a square shape.
  • Two heating devices arranged one behind the other run parallel to each other with their outer edges facing each other, advantageously with a very small distance as previously explained. However, they are not completely congruent, but are slightly offset from each other, for example by 2 cm to 5 cm.
  • first partial heating surfaces are provided, advantageously in a square shape, in such a way that they are next to each other and congruent with each other. This means that they can be easily bridged together when used together. Particularly large roasting pans can then be heated by the two fully operating heating devices in bridge operation.
  • heating surfaces or partial heating surfaces of different heating devices that have fundamentally different shapes can be bridged in a hob according to the invention.
  • a heating device 11a designed as a radiant heating device is shown in plan view.
  • the heating device 11a is, as is usual for radiant heating devices, arranged in a sheet metal shell 12a, which here has a square outer shape.
  • the heating device 11a also has a carrier 13a, which is arranged in the sheet metal shell 12a and which consists of a suitable thermally insulating and electrically insulating material.
  • a wide outer edge runs around the carrier 13a, which protrudes upwards and can be a separate part or integrally formed during production. It consists of a similar material to the carrier 13a.
  • the outer edge 15a has rounded corners for manufacturing reasons. Except for these rounded corners, the outer edge 15a is rectangular just like the carrier 13a, or here even square.
  • the outer edge 15a also has an inner side 16a, which so to speak delimits the top side of the carrier 13a. Likewise, the outer edge 15a has an outer side 17a, with which it largely rests against a raised edge of the sheet metal shell 12a.
  • a first heating element 19a is provided on the carrier 13a, which consists of a first heating conductor 20a, namely a single heating conductor 20a.
  • This elongated heating conductor 20a is laid in a meandering manner in two parallel tracks and has two first connections 21a, which protrude outwards through the outer edge 15a for electrical connection.
  • the first heating element 19a with the first heating conductor 20a forms a first partial heating surface 1THa, which is not only rectangular, but can be considered to be square.
  • the first heating conductor 20a runs around a raised portion 14a of the carrier 13a, so that no heating conductor and thus no heating is provided in the area of this raised portion 14a. Nevertheless, the first partial heating surface 1THa can be considered to be square according to the outer edges. This also applies to the corners according to Fig.2 , especially the upper right and lower right corners.
  • the heating device 11a also has a second heating element 22a, which covers the remaining surface of the carrier 13a.
  • a second heating conductor 23a is laid in a meandering shape with different widths on the carrier 13a, it forms the second partial heating surface 2THa.
  • the second heating conductor 23a of the second heating element 22a is led to second connections 24a, which in turn protrude outwards through the outer edge 15a.
  • the second partial heating surface is, like the Fig. 2 shows, L-shaped or angled with the same simplifications as previously carried out for the first partial heating surface 1THa.
  • the carrier 13a is square, and the first partial heating surface 1THa is also square and is positioned in the upper right corner of the carrier 13a, the second heating element 22a or the corresponding second partial heating surface 2THa has an L-shape with two legs of equal length and width.
  • the two partial heating surfaces 1THa and 2THa together form a heating surface Ha of the heating device 11a, so a total of a square area can be heated. From the laying pattern of the Fig.1 For the two heating conductors 20a and 23a it can be seen that they do not cross over, which is relatively obvious. Furthermore, the respective partial heating surfaces formed by each of the heating conductors 20a and 23a do not cross over or overlap.
  • a rod regulator 27a is attached to the heating device 11a, which is designed as known in the prior art.
  • the rod regulator 27a has a rod regulator housing 28a, from which an elongated thermomechanical temperature sensor 29a protrudes into the heating device 11a or runs above the heating surface Ha.
  • the temperature sensor 29a reaches up to the elevation 14a of the carrier 13a and is held by it against being pressed downwards. It is thus clear that in the Fig.1 the rod controller 27a only thermally monitors the first partial heating surface 1THa and switches it off if the temperature is too high, as is known from the prior art and does not need to be explained in more detail.
  • the temperature sensor 29a could be extended with a dashed extension 29a', which then also covers part of the second partial heating surface 2THa.
  • the second heating element 22a can also be thermally monitored, but this does not have to be the case.
  • the rod controller can be compensated as a temperature sensor, as can be seen from the above-mentioned DE 3705260 A1 and DE 102004058473 A1 is known.
  • the first connections of the first heating element 19a or the first heating conductor 20a are led to the rod controller housing 29 or are electrically connected.
  • the second connections 24a of the second heating conductor 23a are held in a so-called connection block, advantageously made of ceramic material. This means that they can easily be electrically contacted from the side using a plug.
  • the first connection of the connection block is connected to the contact of the rod controller 27a via a wire (not shown), so that when the rod controller 27a is switched, both heating elements are switched off, even if only the first heating element is being monitored.
  • a further heating device 11b is shown, whereby the heating device 11b has a rectangular outer shape.
  • a correspondingly suitable carrier 13b is inserted into a sheet metal shell 12b with a rectangular outer shape, with a raised outer edge 15b, which has an inner side 16b and an outer side 17b.
  • a raised area 14b is also provided on the carrier 13b.
  • the heating device 11b has a first heating element 19b, which is formed by a first heating conductor 20b, which has first connections 21b.
  • This first heating element 19b corresponds exactly to the first heating element 19a from the Fig.1 .
  • a first partial heating surface 1THb formed by this is, as the Fig.4 below, is square and sits, so to speak, in the upper right corner of the entire heating surface Hb of the heating device 11 b.
  • a second heating element 22b fills the remaining heating surface Hb except for the elevation 14b and forms the second partial heating surface 2THb with a second heating conductor 23b, as can also be seen from the Fig.4 Also from the comparison of the Fig.2 and 4 together, it is clearly visible that in the second heating device 11b, in particular in the second partial heating surface 2THb on the left, something is added, namely to the extent that the second heating device 11b is longer in the direction from left to right than the first heating direction 11a.
  • the second heating conductor 23b can be electrically connected to the outside with second electrical connections 24b through the outer edge 15b.
  • the heating device 11b also has a rod controller 27b which has a rod controller housing 28b with an elongated temperature sensor 29b.
  • Fig.4 It is shown that the elongated temperature sensor 29b, shown dashed to the left, with an extension 29b' could reach over the entire heating surface Hb and thus also fully over this area of the second partial heating surface 2THb, which is somewhat wider here than in the Fig.1 .
  • the respective first partial heating surface 1TH could also be arranged at any other location on the carrier 13 or within its heating surface H. In this case, however, the electrical supply lines would be more difficult to lay, although this is feasible, as will be explained below.
  • Fig.5 is an arrangement 31a of two heating devices 11a according to or similar to the representation of the Fig.2
  • the left heating device 11a is visible exactly as in Fig.1 or.
  • Fig.2 designed the right heating device 11a' is only designed in principle the same, i.e. with equally large partial heating surfaces. Strictly speaking, it is designed mirror-symmetrically to the left heating device 11a with a mirror axis along a center line 32a that runs between the two heating devices 11a and 11a'.
  • the two first partial heating surfaces 1THa and 1THa' are adjacent to one another with their sides facing each other. In this respect, they are congruent because they are also the same size. It can therefore be seen that with the arrangement 31a, several cooking vessels of different sizes can be heated or heating zones can be formed. The smallest cooking vessel can only be heated by one of the two first partial heating surfaces 1THa or 1THa'. A next larger vessel can be heated by an entire heating device 11a or 11a, for example 1THa and 2THa. A smaller, elongated or oval roaster can be heated by the two first partial heating surfaces 1THa and 1THa' in joint operation. An even larger, elongated roaster or a very large cooking pot could be heated by the two heating devices 11a and 11a' together. From the shape of the second partial heating surfaces 2THa or 2THa', it is clear at first glance that their isolated operation alone makes no sense.
  • FIG.6 A further arrangement 31b is shown, which is basically constructed similarly to that of Fig.5
  • a heating device 11b according to Fig. 3 and 4
  • another heating device 11b' is provided, which has the same size and the same external shape.
  • Fig.5 described is designed mirror-symmetrically to the left heating device 11b, whereby it is possible for the two first partial heating surfaces 1THb and 1THb' to be mirror-symmetrical and to almost abut one another with their mutually facing outer sides.
  • the thickness of the respective outer edge 15 is not taken into account when showing how partial heating surfaces or entire heating surfaces can lie against one another or can continue.
  • the principle underlying the invention is nevertheless easy to understand and comprehend.
  • FIG.7 is a plan view of a hob 35 according to the invention in a first embodiment of the invention.
  • the hob 35 has four heating devices 11, namely two heating devices 11a or 11a' with a square outer shape and two heating devices 11b or 11b' with a rectangular outer shape.
  • a hob could also have more correspondingly designed heating devices, for example six or eight heating devices.
  • An operating device 36 is arranged in the front center, advantageously with touch switches.
  • a heating device 11a or 11a' with a square outer shape and a heating device 11b or 11b' with a rectangular outer shape are combined on the left and right and installed close to each other. They can even touch each other. It can be seen how the heating device 11a' is arranged in accordance with the Fig.5 the first partial heating surface 1THa' is placed in the upper left corner. To the right and below is the second partial heating surface 2THa'.
  • the first partial heating surface 1THb is arranged in the lower left corner, and the L-shaped second partial heating surface 2THb extends to the right and above it. This means that the two first partial heating surfaces 1THa' and 1THb can again be used to form a continuous bridge for heating an elongated cooking vessel.
  • the offset is chosen differently than on the left as an example of as many different arrangement possibilities as possible.
  • the two heating devices are still directly adjacent to one another, including the first partial heating surfaces 1THa' and 1THb.
  • the adjacent outer sides are no longer congruent, but are slightly offset from one another. They can still be arranged in the corners of the respective heating device, but the same heating devices 11 can be used on the left and right in the hob 35.
  • the offset of the first two partial heating surfaces can be a little surprising in practice, but it only causes a minor thermal disturbance.
  • Another cooking surface 135 according to the invention according to Fig.8 has two heating devices 11a on the left corresponding Fig. 1 and 2 which are adjacent to one another, but are not congruent but are slightly offset. Their outer shape is square.
  • the first partial heating surfaces 1THa are, however, adjacent to one another.
  • two further square heating devices 11a" are arranged next to each other, but offset from each other.
  • a respective first partial heating surface 1THa" is formed on an outer side or abutting the outer edge, but only on one outer side. It is not arranged in the corner, so to speak. This makes it possible for the two heating devices 11a" to be arranged offset from each other and the first partial heating surfaces 1THa" not to be in the corner, but they are nevertheless arranged congruently next to each other.
  • FIG.9 another cooking surface 235 according to the invention is shown, in which behind a front central control device 236 on the left an arrangement 31a corresponding Fig.5 a heating device 11a and a heating device 11a is provided.
  • a heating device 11a and a heating device 11a is provided in the right half of the hob 235 .
  • the right half of the hob 235 there are two round heating devices, namely a small round heating device 35c at the front and a larger round heating device 35d at the back. These are not divided into different partial heating surfaces at all. Due to their respective sizes they are well adapted to the available space, also due to the operating device 236.
  • heating devices 111a and 111a' are arranged very close to each other or abutting each other.
  • these heating devices 111a and 111a' which each have a square outer shape, a special feature is provided that their first partial heating surfaces 1THa and 1THa' abut each other in the middle or in the common middle area and form an essentially closed or continuous surface. They are all the same size.
  • the diagonally opposite heating devices 111a and 111a' are identical, the others are mirror-symmetrical to them.
  • the very large surface formed by the four partial heating surfaces 1THa and 1THa' can be used to heat very large cooking vessels such as paella pans. It is also conceivable to operate the four entire heating devices 111a and 111a' with all partial heating surfaces 1THa, 1THa', 2THa and 2THa' completely for such paella pans or the like.
  • the respective associated second partial heating surfaces 2THa and 2THa' are then grouped together as a kind of rectangular ring around the outside.
  • different bridge functions or bridge arrangements and thus overall interconnections of heating surfaces or partial heating surfaces are possible in order to be able to optimally heat cooking vessels of different sizes.
  • an internal electrical connection to the first partial heating surfaces 1THa and 1THa' is somewhat more difficult or complex here, since they do not border on an exposed outside of the heating device. This can also be done by laying appropriate heating conductors. It is possible to move the heating devices 111a and 111a' far enough apart from each other to create an electrical connection option in an intermediate space.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Electric Stoves And Ranges (AREA)
  • Control Of Resistance Heating (AREA)

Description

Anwendungsgebiet und Stand der TechnikArea of application and state of the art

Die Erfindung betrifft ein Kochfeld mit mehreren Heizeinrichtungen.The invention relates to a hob with several heating devices.

Eine bei Kochfeldern bekannte und sehr bewährte Technologie für die Heizeinrichtungen sind Strahlungsheizeinrichtungen. Solche Heizeinrichtungen sind beispielsweise aus der DE 3613902 A1 im Detail bekannt. Dort sind bei einem Kochfeld mehrere gleiche Heizeinrichtungen mit jeweils einem rechteckigen Träger vorgesehen, auf denen Heizelemente angeordnet sind, vorteilhaft zwei Heizelemente mit jeweils einem Heizleiter. Die Heizleiter verlaufen hier ineinandergreifend eckig-spiralförmig innerhalb einer gemeinsam gebildeten Heizfläche, die von einem umlaufenden nach oben stehenden Außenrand des Trägers begrenzt wird. In dem Kochfeld können mehrere dieser Heizeinrichtungen, beispielsweise vier Heizeinrichtungen, relativ nahe beieinander angeordnet werden, um so eine möglichst lückenlose Beheizung zu erreichen bzw. um die Fläche des Kochfelds möglichst gut auszunutzen.A well-known and very proven technology for heating devices in hobs is radiant heating devices. Such heating devices are, for example, from the DE 3613902 A1 in detail. There, a hob is provided with several identical heating devices, each with a rectangular support on which heating elements are arranged, preferably two heating elements, each with a heating conductor. The heating conductors here run in an interlocking, angular spiral shape within a jointly formed heating surface, which is delimited by a circumferential, upward-standing outer edge of the support. Several of these heating devices, for example four heating devices, can be arranged relatively close to one another in the hob in order to achieve heating that is as seamless as possible or to use the hob surface as well as possible.

Aus der DE 34 07 965 A1 ist eine Grillplatte bekannt, die in einer Mehrzahl gleich großer Einzelfelder unterteilt ist. Jedes Einzelfeld weist einen an der Unterseite angebrachten Rohrheizkörper in Spiralform auf.From the DE 34 07 965 A1 A grill plate is known that is divided into a number of individual fields of equal size. Each individual field has a spiral-shaped tubular heating element attached to the underside.

Aus der DE 40 07 680 A1 ist ein Kochfeld bekannt mit einer Kochfeldplatte, die in mehrere rechteckige Bereiche unterteilt ist. Jeder dieser Bereiche weist ein eigenes Heizelement auf.From the EN 40 07 680 A1 is a hob with a hob plate that is divided into several rectangular areas. Each of these areas has its own heating element.

Aus der US 2005/0051533 A1 ist ein Herd bekannt mit einem Kochfeld an der Oberseite, das unter einer Kochfeldplatte eine Vielzahl von Heizeinrichtungen aufweist. Die Heizelemente sind jeweils rechteckig und flächig ausgebildet. Sie werden von unten her elektrisch kontaktiert an eine Leistungsversorgung.From the US 2005/0051533 A1 is a stove with a hob on the top, which has a number of heating devices under a hob plate. The heating elements are each rectangular and flat. They are electrically connected to a power supply from below.

Aufgabe und LösungTask and solution

Aus der US 4,073,970 A ist eine flächige Heizeinheit bekannt, die zwei mäanderförmig ineinander verschlungen verlaufende Heizelemente aufweist. Die Heizelemente sind dabei als streifenförmige Heizwiderstände ausgebildet und können beispielsweise aus einer Metalllegierung mit einem hohen Platin-Anteil bestehen. Aus der EP 2 133 012 B1 ist eine Kocheinrichtung bekannt mit einem flächigen Träger und mehreren regelmäßig angeordneten Heizelementen unter einer Kochfläche, die als Grill verwendet werden kann. Die rechteckigen Heizelemente sind Dickschichtheizelemente und sind sämtlich gleich groß ausgebildet. Aus der WO 2015 / 062 859 A1 ist eine weitere Garvorrichtung bekannt mit einer großen durchgängigen Heizplatte, unter der mehrere Heizelemente angeordnet sind. Die Heizelemente weisen unterschiedliche Formen auf und können beispielsweise Rohrheizkörper sein.From the US 4,073,970 A A flat heating unit is known which has two heating elements running in a meandering pattern. The heating elements are designed as strip-shaped heating resistors and can be made of a metal alloy with a high platinum content, for example. EP 2 133 012 B1 is a cooking device with a flat support and several regularly arranged heating elements under a cooking surface that can be used as a grill. The rectangular heating elements are thick-film heating elements and are all the same size. From the WO 2015 / 062 859 A1 Another cooking device is known with a large continuous heating plate under which several heating elements are arranged. The heating elements have different shapes and can be tubular heating elements, for example.

Der Erfindung liegt die Aufgabe zugrunde, ein mit Heizeinrichtungen versehenes Kochfeld zu schaffen, mit dem Probleme des Standes der Technik gelöst werden können und es insbesondere möglich ist, vorteilhafte Beheizungsarten mit unterschiedlich großen Kochgefäßen an dem Kochfeld zu realisieren.The invention is based on the object of creating a cooking surface provided with heating devices with which problems of the prior art can be solved and, in particular, it is possible to realize advantageous heating types with cooking vessels of different sizes on the cooking surface.

Gelöst wird diese Aufgabe durch ein Kochfeld mit den Merkmalen des Anspruchs 1. Vorteilhafte sowie bevorzugte Ausgestaltungen der Erfindung sind Gegenstand der weiteren Ansprüche und werden im Folgenden näher erläutert. Der Wortlaut der Ansprüche wird durch ausdrückliche Bezugnahme zum Inhalt der Beschreibung gemacht.This object is achieved by a hob with the features of claim 1. Advantageous and preferred embodiments of the invention are the subject of the further claims and are explained in more detail below. The wording of the claims is made part of the content of the description by express reference.

Es ist vorgesehen, dass die Heizeinrichtung einen flächigen Träger mit einem Außenrand aufweist. Dieser flächige Träger kann vorteilhaft eben sein, muss es aber nicht. Der Außenrand kann des Weiteren hochgezogen sein, aber auch dies ist nicht zwingend. In jedem Fall begrenzt der Außenrand den Träger nach außen. Der Träger hat eine im Wesentlichen rechteckige Form, insbesondere mit leicht abgerundeten oder abgeschrägten Ecken. Vorteilhaft sind jeweils gegenüberliegende Seiten parallel zueinander. Des Weiteren weist die Heizeinrichtung mindestens zwei Heizelemente auf, vorteilhaft auf dem Träger angeordnet oder befestigt. Die Heizelemente weisen jeweils mindestens einen Heizleiter auf und bilden gemeinsam eine Heizfläche, die vorteilhaft in etwa der Fläche des Trägers entspricht. Ein Heizelement könnte auch zwei Heizleiter aufweisen. Heizelemente bzw. Heizleiter erzeugen im Betrieb Strahlungswärme nach oben.It is intended that the heating device has a flat support with an outer edge. This flat support can advantageously be flat, but does not have to be. The outer edge can also be raised, but this is not mandatory either. In any case, the outer edge limits the support on the outside. The support has an essentially rectangular shape, in particular with slightly rounded or bevelled corners. Opposite sides are advantageously parallel to one another. The heating device also has at least two heating elements, advantageously arranged or attached to the support. The heating elements each have at least one heating conductor and together form a heating surface that advantageously corresponds approximately to the surface of the support. A heating element could also have two heating conductors. Heating elements or heating conductors generate radiant heat upwards during operation.

Vorteilhaft definiert sich ein Heizleiter dadurch, dass er zwei Enden hat und an diesen jeweils elektrisch anschließbar bzw. kontaktierbar ist zu seinem Betrieb. Des Weiteren ist vorgesehen, dass die Heizelemente und/oder die Teil-Heizflächen unabhängig voneinander betreibbar sind bzw. betrieben werden können. Dazu können sie jeweils eigene elektrische Anschlüsse aufweisen bzw. sind eben separat voneinander elektrisch kontaktierbar. Manche Anschlüsse von mehreren Heizelementen bzw. Teil-Heizflächen können auch gemeinsam vorgesehen sein, wie dies an sich für derartige Heizeinrichtungen als Strahlungsheizeinrichtungen bekannt ist.A heating conductor is advantageously defined by the fact that it has two ends and can be electrically connected or contacted to each of these for its operation. Furthermore, it is intended that the heating elements and/or the partial heating surfaces can be operated independently of one another. For this purpose, they can each have their own electrical connections or can be electrically contacted separately from one another. Some connections of several heating elements or partial heating surfaces can also be provided together, as is known per se for such heating devices as radiant heating devices.

Die Heizleiter sind auf dem Träger befestigt, möglicherweise unter Teil-Einbettung in eine Oberseite des Trägers. Jedes Heizelement definiert eine Teil-Heizfläche, vorteilhaft genau eine einzige Teil-Heizfläche. In diesem Fall weist die Heizeinrichtung mindestens zwei Teil-Heizflächen auf, vorteilhaft genau zwei Teil-Heizflächen. Diese Teil-Heizflächen liegen innerhalb der rechteckigen Form des Trägers, und zwar innerhalb des Außenrands.The heating conductors are attached to the carrier, possibly partially embedded in an upper side of the carrier. Each heating element defines a partial heating surface, advantageously exactly one single partial heating surface. In this case, the heating device has at least two partial heating surfaces, advantageously exactly two partial heating surfaces. These partial heating surfaces lie within the rectangular shape of the carrier, specifically within the outer edge.

Erfindungsgemäß ist vorgesehen, dass sich die Teil-Heizflächen einer Heizeinrichtung nicht überschneiden, sie also getrennt voneinander verlaufen. Dabei kann vorgesehen sein, dass eine Teilfläche überall dort ist, wo ein Heizleiter des zugehörigen Heizelements verläuft, sie also flächenmäßig durch ihn definiert ist. Somit ist vorteilhaft auch vorgesehen, dass sich keine Heizleiter überschneiden oder überkreuzen. Des Weiteren ist eine erste Teil-Heizfläche rechteckig. Sie reicht mit mindestens einer ihrer Außenseiten an den Außenrand des Trägers oder an eine Innenseite dieses Außenrands, wenn dieser nach oben gezogen ist, wie zuvor beschrieben worden ist. Diese mindestens eine Außenseite der Teil-Heizfläche verläuft dabei auch parallel zu diesem Außenrand, an den sie direkt oder nahe daran reicht.According to the invention, it is provided that the partial heating surfaces of a heating device do not overlap, i.e. they run separately from one another. It can be provided that a partial surface is everywhere where a heating conductor of the associated heating element runs, i.e. it is defined by it in terms of area. It is therefore also advantageously provided that no heating conductors overlap or cross each other. Furthermore, a first partial heating surface is rectangular. It extends with at least one of its outer sides to the outer edge of the carrier. or to an inner side of this outer edge if it is pulled upwards, as previously described. This at least one outer side of the partial heating surface also runs parallel to this outer edge, to which it extends directly or close to it.

Des Weiteren weist die Heizeinrichtung erfindungsgemäß eine zweite Teil-Heizfläche auf entsprechend einem zweiten Heizelement. Diese zweite Teil-Heizfläche bedeckt den restlichen Träger, der von der ersten Teil-Heizfläche freigelassen ist. Dabei kann vorgesehen sein, dass die zweite Teil-Heizfläche von mehr als einem einzigen Heizelement oder von mehr als einem einzigen Heizleiter gebildet ist, so dass sie auch als die Summe von mehreren weiteren Teil-Heizflächen angesehen werden kann bzw. von mehreren weiteren Teil-Heizflächen gebildet wird. Wichtig im Rahmen der Erfindung ist auf alle Fälle, dass eben erste Teil-Heizfläche rechteckig ist. Auch der von der ersten Teil-Heizfläche noch freigelassene Bereich des Trägers ist von mindestens einem Heizelement bzw. mindestens einem Heizleiter bedeckt und heizt somit auch.Furthermore, according to the invention, the heating device has a second partial heating surface corresponding to a second heating element. This second partial heating surface covers the rest of the carrier that is left free by the first partial heating surface. It can be provided that the second partial heating surface is formed by more than one heating element or by more than one heating conductor, so that it can also be viewed as the sum of several further partial heating surfaces or is formed by several further partial heating surfaces. In any case, it is important within the scope of the invention that the first partial heating surface is rectangular. The area of the carrier that is still left free by the first partial heating surface is also covered by at least one heating element or at least one heating conductor and therefore also heats.

Somit ist es mit der Erfindung möglich, eine Heizeinrichtung mit einem Träger zu schaffen, der mindestens eine separat betreibbare rechteckige Teil-Heizfläche aufweist, die am Rand des Trägers liegt. Somit kann sie sehr gut mit weiteren Teil-Heizflächen einer weiteren Heizeinrichtung, die nahe dazu daneben angeordnet ist, gemeinsam betrieben werden als sogenannte Brücke oder gebrückte Heizeinrichtung zum Beheizen von dazu passenden Kochgefäßen, beispielsweise länglich-ovalen Brätern.Thus, the invention makes it possible to create a heating device with a carrier that has at least one separately operable rectangular partial heating surface that is located on the edge of the carrier. Thus, it can be operated very well together with further partial heating surfaces of another heating device that is arranged close to it, as a so-called bridge or bridged heating device for heating suitable cooking vessels, for example elongated oval roasting pans.

Vorteilhaft sind die Heizelemente bzw. die Heizleiter Widerstandsheizelemente und dazu ausgebildet, im Betrieb zu glühen bzw. sogar etwas zu leuchten. Sie beheizen also darüber aufgestellte Kochgefäße mittels ihrer Strahlungsheizleistung. Dies ist ja auch aus der eingangs genannten DE 3613902 A1 bekannt.Advantageously, the heating elements or the heating conductors are resistance heating elements and are designed to glow or even light up slightly when in use. They therefore heat cooking vessels placed above them using their radiant heat output. This is also evident from the above-mentioned DE 3613902 A1 known.

In Ausgestaltung der Erfindung kann vorgesehen sein, dass die erste Teil-Heizfläche mit zwei ihrer Außenseiten, die vorteilhaft aneinanderstoßen bzw. eine Ecke miteinander bilden, jeweils an den Außenrand oder an eine Innenseite des Außenrands des Trägers reichen. Dabei verlaufen sie auch parallel dazu. Somit kann die erste Teil-Heizfläche bevorzugt sozusagen in einer Ecke oder in einem Eckbereich des Trägers liegen. Dann kann sie nicht nur mit einer einzigen weiteren Teil-Heizfläche einer benachbarten Heizeinrichtung zusammen betrieben werden als vorgenannte Brücke oder gebrückte Heizeinrichtung, sondern auch oder alternativ mit einer nochmals weiteren Teil-Heizfläche einer nochmals weiteren Heizeinrichtung. Insbesondere kann es bei einem erfindungsgemäßen Kochfeld vorgesehen sein, dass nicht nur mindestens zwei erfindungsgemäße Heizeinrichtungen derart darin nebeneinander angeordnet sind, dass sie geringen Abstand aufweisen. Dies kann insbesondere ein Abstand von weniger als 2 cm sein, so dass die jeweils ersten Teil-Heizflächen der beiden Heizeinrichtungen mit ihren Außenseiten benachbart und parallel zueinander liegen. Es können sogar vier derartige Heizeinrichtungen im Viereck angeordnet sein, und im Mittelpunkt, wo vier Ecken aneinanderstoßen, können auch vier Teil-Heizflächen aneinanderstoßen. Ihre Ecken weisen dann jeweils nur geringen Abstand zueinander auf, vorteilhaft weniger als 2 cm bis 4 cm. Hier können dann diese vier Teil-Heizflächen oder jeweils zwei benachbarte Teil-Heizflächen gemeinsam betrieben werden, abhängig von einer Größe eines zu beheizenden Kochgefäßes.In an embodiment of the invention, it can be provided that the first partial heating surface with two of its outer sides, which advantageously abut one another or form a corner with one another, each reach to the outer edge or to an inner side of the outer edge of the carrier. They also run parallel to it. The first partial heating surface can therefore preferably be located in a corner or in a corner area of the carrier. Then it can not only be operated together with a single further partial heating surface of an adjacent heating device as the aforementioned bridge or bridged heating device, but also or alternatively with yet another partial heating surface of yet another heating device. In particular, it can be provided in a hob according to the invention that not only at least two heating devices according to the invention are arranged next to one another in such a way that they are closely spaced. This can in particular be a distance of less than 2 cm, so that the respective first partial heating surfaces of the two heating devices are adjacent and parallel to one another with their outer sides. Four such heating devices can even be arranged in a square, and in the center, where four corners abut one another, four partial heating surfaces can also abut one another. Their corners are then only a short distance apart from each other, preferably less than 2 cm to 4 cm. These four partial heating surfaces or two adjacent partial heating surfaces can then be operated together, depending on the size of the cooking vessel to be heated.

Bei einem solchen Kochfeld ist es insbesondere auch möglich, dass die benachbarten und parallel zueinander liegenden jeweiligen ersten Teil-Heizflächen der Heizeinrichtungen deckungsgleich bzw. jeweils über die gleiche Länge parallel nebeneinander liegen. So schaffen sie eine gemeinsame Heizfläche, die wiederum rechteckig ist.With such a hob, it is also possible for the adjacent and parallel first partial heating surfaces of the heating devices to be congruent or parallel to one another over the same length. In this way, they create a common heating surface, which is in turn rectangular.

In vorteilhafter Ausgestaltung der Erfindung weist die erste Teil-Heizfläche eine quadratische Form auf. Allgemein kann eine Außenseite der ersten Teil-Heizfläche eine Länge zwischen 100 mm und 200 mm aufweisen, vorzugsweise zwischen 110 mm und 150 mm. Dies ergibt für übliche Kochgefäßgrößen, insbesondere auch wenn mit zwei von ihnen ein eingangs genannter länglicher ovaler Bräter beheizt werden soll, ein übliches Maß. Häufig verwendete Kochgefäße mit einem Durchmesser von 150 mm weisen ein Innenquadrat mit nahezu 110 mm Kantenlänge auf. Vorgenannte Bräter weisen häufig eine Länge zwischen 250 mm und 400 mm auf entlang ihrer größeren Längserstreckung. Auch hier passt eine vorgenannte quadratische Form in der genannten Größe gut.In an advantageous embodiment of the invention, the first partial heating surface has a square shape. In general, an outer side of the first partial heating surface can have a length of between 100 mm and 200 mm, preferably between 110 mm and 150 mm. This results in a standard size for standard cooking vessel sizes, especially when two of them are to be used to heat an elongated oval roasting pan as mentioned above. Frequently used cooking vessels with a diameter of 150 mm have an inner square with an edge length of almost 110 mm. The aforementioned roasting pans often have a length of between 250 mm and 400 mm along their greater longitudinal extent. Here, too, the aforementioned square shape in the size mentioned fits well.

Erfindungsgemäß weist die zweite Teil-Heizfläche eine L-Form auf, so dass in dem dadurch gebildeten Innenwinkel die erste Teil-Heizfläche liegt. Besonders vorteilhaft bilden die erste Teil-Heizfläche und die zweite Teil-Heizfläche gemeinsam eine rechteckige oder quadratische Fläche, und zwar den flächigen Träger überdeckend bis zu seinem Außenrand bzw. bis zu dessen Innenseite. Wie eingangs erläutert worden ist, kann die zweite Teil-Heizfläche auch wiederum von mehreren separat betreibbaren Heizelementen bzw. Heizleitern gebildet sein. Die zweite Teil-Heizfläche kann dabei bevorzugt etwa gleich breite Schenkel aufweisen, die allerdings unterschiedlich lang sein können. Der Längenunterschied kann den Faktor 1,2 bis 2,5 betragen, vorteilhaft 1,5 bis 2.According to the invention, the second partial heating surface has an L-shape, so that the first partial heating surface lies in the inner angle formed thereby. Particularly advantageously, the first partial heating surface and the second partial heating surface together form a rectangular or square surface, covering the flat support up to its outer edge or up to its inner side. As explained at the beginning, the second partial heating surface can also be formed by several separately operable heating elements or heating conductors. The second partial heating surface can preferably have legs of approximately the same width, which can, however, be of different lengths. The difference in length can be a factor of 1.2 to 2.5, advantageously 1.5 to 2.

Bei einer solchen Ausgestaltung einer Heizeinrichtung kann eine kleine rechteckige Fläche entsprechend der ersten Teil-Heizfläche separat beheizt werden, in der Regel für ein relativ kleines Kochgefäß. Ein Betrieb der zweiten Teil-Heizfläche alleine wird in der Regel keinen Sinn machen, da keine entsprechend geformten Kochgefäße üblich sind. Eine mögliche nächstgrößere zu beheizende Fläche für ein Kochgefäß ist vorteilhaft der gemeinsame Betrieb der ersten Teil-Heizfläche und der zweiten Teil-Heizfläche, und somit der gesamten Heizeinrichtung. Dies kann für mittelgroße Kochgefäße geeignet sein.With such a design of a heating device, a small rectangular area corresponding to the first partial heating surface can be heated separately, usually for a relatively small cooking vessel. Operating the second partial heating surface alone will generally not make sense, since cooking vessels of a corresponding shape are not common. A possible next larger area to be heated for a cooking vessel is advantageously the joint operation of the first partial heating surface and the second partial heating surface, and thus of the entire heating device. This can be used for medium-sized cooking vessels. be suitable.

Für längliche Bräter können zwei benachbarte erste Teil-Heizflächen beheizt werden wie oben erläutert. Für sehr große Kochgefäße oder sehr große Bräter können zwei nebeneinanderliegende Heizeinrichtungen vollständig betrieben werden, also jeweils deren erste und zweite Teil-Heizflächen. Somit ist bei einem erfindungsgemäßen Kochfeld eine große Varianz an Möglichkeiten zur Zusammenstellung von beheizten Flächen gegeben, wodurch erreicht werden kann, dass unterschiedlich große bzw. unterschiedlich geformte Kochgefäße möglichst gut, effizient und schnell beheizt werden.For long roasting pans, two adjacent first partial heating surfaces can be heated as explained above. For very large cooking vessels or very large roasting pans, two adjacent heating devices can be fully operated, i.e. their first and second partial heating surfaces. Thus, a hob according to the invention offers a wide variety of options for assembling heated surfaces, which means that cooking vessels of different sizes or shapes can be heated as well, efficiently and quickly as possible.

Für den Träger selbst ist vorteilhaft vorgesehen, dass er sogar speziell quadratische Form aufweist. In diesem Fall ist die erste Teil-Heizfläche auch nahezu quadratisch oder weist einen Unterschied ihrer Seitenlängen von maximal 10 % auf. Für ein erfindungsgemäßes Kochfeld kann in weiterer Ausgestaltung der Erfindung vorgesehen sein, dass mindestens eine Heizeinrichtung gemäß der Erfindung quadratisch ausgebildet ist und mindestens eine Heizeinrichtung gemäß der Erfindung rechteckig ausgebildet ist. Sie können teilweise nahe beieinander bzw. nebeneinander angeordnet sein, um in Kombination eine Beheizung möglichst unterschiedlicher oder variabler Flächen zu ermöglichen.It is advantageous for the carrier itself to have a specifically square shape. In this case, the first partial heating surface is also almost square or has a difference in its side lengths of a maximum of 10%. For a hob according to the invention, in a further embodiment of the invention, it can be provided that at least one heating device according to the invention is square and at least one heating device according to the invention is rectangular. They can be arranged close to one another or next to one another in order to enable heating of as many different or variable surfaces as possible in combination.

In Ausgestaltung der Erfindung kann ein länglicher Temperaturfühler oder Temperaturbegrenzer vorgesehen sein an der Heizeinrichtung, der oberhalb der Heizelemente bzw. der Heizleiter verläuft. Ein solcher Temperaturfühler oder Temperaturbegrenzer verläuft mindestens über der ersten Teil-Heizfläche, möglicherweise auch über der zweiten Teil-Heizfläche. Da bei einer solchen Heizeinrichtung, wie eingangs erläutert worden ist, bevorzugt immer die erste Teil-Heizfläche betrieben wird, falls die Heizeinrichtung überhaupt betrieben wird, ist sie hinsichtlich einer möglicherweise gefährlichen zu hohen Temperatur abgesichert. Verläuft der Temperaturfühler oder Temperaturbegrenzer in länglicher Form auch über der zweiten Teil-Heizfläche, so kann auch diese sozusagen abgesichert sein. Hier kann der Temperaturfühler oder Temperaturbegrenzer kompensiert sein, wie dies aus der DE 3705260 A1 und vor allem der DE 102004058473 A1 bekannt ist durch Verwendung unterschiedlicher Materialien. Grundsätzlich sind derartige längliche Temperaturfühler oder Temperaturbegrenzer ja aus dem Stand der Technik bekannt, sie werden auch als Sicherheitstemperaturbegrenzer oder Stabregler bezeichnet. Hierzu wird auch auf die eingangs genannte DE 3613902 A1 verwiesen, die diese auch zeigt. Ein solcher länglicher Temperaturfühler oder Temperaturbegrenzer ist vorteilhaft ein thermomechanisches Bauteil und arbeitet mit thermischer Ausdehnung, wodurch bei einem bestimmten Ausdehnungsweg entsprechend einer bestimmten Temperatur ein Schalter geöffnet oder geschlossen wird. Vorteilhaft wird eine Stromversorgung für die Heizeinrichtung bzw. eines der Heizelemente oder der Heizleiter automatisch getrennt bei zu hoher erfasster Temperatur.In an embodiment of the invention, an elongated temperature sensor or temperature limiter can be provided on the heating device, which runs above the heating elements or the heating conductors. Such a temperature sensor or temperature limiter runs at least over the first partial heating surface, possibly also over the second partial heating surface. Since with such a heating device, as explained at the beginning, the first partial heating surface is always preferably operated, if the heating device is operated at all, it is protected against a potentially dangerously high temperature. If the temperature sensor or temperature limiter runs in an elongated form over the second partial heating surface, this can also be protected, so to speak. Here, the temperature sensor or temperature limiter can be compensated, as can be seen from the DE 3705260 A1 and above all the DE 102004058473 A1 is known through the use of different materials. Basically, such elongated temperature sensors or temperature limiters are known from the state of the art, they are also referred to as safety temperature limiters or rod regulators. In this regard, reference is also made to the above-mentioned DE 3613902 A1 which also shows it. Such an elongated temperature sensor or temperature limiter is advantageously a thermomechanical component and works with thermal expansion, whereby a switch is opened or closed at a certain expansion path corresponding to a certain temperature. Advantageously, a power supply for the heating device or one of the heating elements or the heating conductor is automatically disconnected if the temperature detected is too high.

Vorteilhaft kann vorgesehen sein, dass der längliche Temperaturfühler oder Temperaturbegrenzer von einem Außenrand des Trägers aus über mindestens die halbe Erstreckung des Trägers in der Richtung der Längsrichtung des Temperaturfühlers oder Temperaturbegrenzers selbst über mindestens der ersten Teil-Heizfläche verläuft. Anders ausgedrückt überdeckt der längliche Temperaturfühler oder Temperaturbegrenzer zumindest die halbe Fläche der ersten Teil-Heizfläche. Besonders vorteilhaft kann vorgesehen sein, dass der längliche Temperaturfühler oder Temperaturbegrenzer die erste Teil-Heizfläche ganz überdeckt. In nochmaliger weiterer Ausgestaltung der Erfindung kann vorgesehen sein, dass der Temperaturfühler oder Temperaturbegrenzer von einem Außenrand des Trägers bis zum gegenüberliegenden Außenrand des Trägers verläuft, also den gesamten Träger bzw. dessen Fläche sozusagen überspannt. Auch dabei sollte er auf alle Fälle oberhalb der ersten Teil-Heizfläche verlaufen, damit diese gegen zu hohe Temperatur abgesichert ist.It can be advantageously provided that the elongated temperature sensor or temperature limiter runs from an outer edge of the carrier over at least half the extent of the carrier in the direction of the longitudinal direction of the temperature sensor or temperature limiter itself over at least the first partial heating surface. In other words, the elongated temperature sensor or temperature limiter covers at least half the area of the first partial heating surface. It can be particularly advantageous for the elongated temperature sensor or temperature limiter to completely cover the first partial heating surface. In yet another further embodiment of the invention, it can be provided that the temperature sensor or temperature limiter runs from an outer edge of the carrier to the opposite outer edge of the carrier, i.e. spans the entire carrier or its surface, so to speak. In this case, too, it should definitely run above the first partial heating surface so that it is protected against excessively high temperatures.

Als Alternative zu einem vorgenannten länglichen Temperaturfühler oder Temperaturbegrenzer kann ein kleiner bzw. punktförmiger Temperaturfühler vorgesehen sein an der Heizeinrichtung, der auch über oder oberhalb mindestens der ersten Teil-Heizfläche angeordnet ist. Ein solcher kleiner bzw. punktförmiger Temperaturfühler kann an die Unterseite einer Kochfeldplatte des Kochfelds angedrückt sein und hier die Temperatur direkt erfassen, da ja üblicherweise derartige Stabregler oder Sicherheitstemperaturbegrenzer eine maximale Temperatur der Kochfeldplatte überwachen und begrenzen sollen. Ein solcher kleiner Temperaturfühler kann durch einen PTC-Widerstand, einen NTC-Widerstand oder ein Thermoelement gebildet sein, also eine direkte Temperaturmessung ermöglichen. Derartige kleine bzw. punktförmige Temperaturfühler werden elektrisch bzw. elektronisch ausgewertet zur Bestimmung eines Temperatursignals, anhand dessen eine möglicherweise zu hohe Temperatur festgestellt werden kann.As an alternative to the aforementioned elongated temperature sensor or temperature limiter, a small or point-shaped temperature sensor can be provided on the heating device, which is also arranged above or above at least the first partial heating surface. Such a small or point-shaped temperature sensor can be pressed onto the underside of a hob plate of the hob and can measure the temperature directly here, since such rod regulators or safety temperature limiters are usually intended to monitor and limit a maximum temperature of the hob plate. Such a small temperature sensor can be formed by a PTC resistor, an NTC resistor or a thermocouple, thus enabling direct temperature measurement. Such small or point-shaped temperature sensors are evaluated electrically or electronically to determine a temperature signal, which can be used to determine whether a temperature is possibly too high.

Bei einer möglichen Ausbildung der Erfindung können auch Kombinationen von vorgenannten länglichen Temperaturfühlern und kleine bzw. punktförmige Temperaturfühlern, insbesondere mit PTC-Widerstand, NTC-Widerstand oder Thermoelement, gebildet werden. Dazu können entweder beliebige Platzierungen vorgesehen sein, alternativ können die kleinen bzw. punktförmigen Temperaturfühler an einem länglichen Temperaturfühler angeordnet sein, beispielsweise aufgeklipst.In one possible embodiment of the invention, combinations of the aforementioned elongated temperature sensors and small or point-shaped temperature sensors, in particular with PTC resistors, NTC resistors or thermocouples, can also be formed. For this purpose, any desired placement can be provided, or alternatively the small or point-shaped temperature sensors can be arranged on an elongated temperature sensor, for example clipped on.

In Ausgestaltung der Erfindung ist es möglich, dass ein weiterer solcher kleiner bzw. punktförmiger Temperaturfühler im Bereich der zweiten Teil-Heizfläche angeordnet ist. Er kann auch oberhalb davon bzw. auf dieselbe Art und Weise wie der andere Temperaturfühler im Bereich der ersten Teil-Heizfläche angeordnet sein.In an embodiment of the invention, it is possible for another such small or point-shaped temperature sensor to be arranged in the area of the second partial heating surface. It can also be arranged above it or in the same way as the other temperature sensor in the area of the first partial heating surface.

In weiterer vorteilhafter Ausgestaltung der Erfindung sind elektrische Anschlüsse an eine Heizeinrichtung nur an einer Seite des Trägers vorgesehen, und zwar für alle Teil-Heizflächen. Auch ein vorgenannter Temperaturfühler oder Temperaturbegrenzer ist an dieser Seite elektrisch kontaktierbar. Dabei kann vorteilhaft vorgesehen sein, dass die elektrischen Anschlüsse der ersten Teil-Heizfläche räumlich etwas getrennt sind bzw. Abstand aufweisen zu den elektrischen Anschlüssen einer zweiten Teil-Heizfläche. Es können auch jeweils unterschiedliche sogenannte Anschlusssteine oder Anschluss-Steckvorrichtungen vorgesehen sein. Dies erleichtert den elektrischen Anschluss bei einer Montage der Heizeinrichtung bzw. des Kochfelds. Des Weiteren können dann die anderen Seiten der Heizeinrichtung frei bleiben von solchen elektrischen Anschlüssen, die zwangsläufig über die Außenseite bzw. den Außenrand überstehen. Somit ergibt sich die Möglichkeit, dass die Heizeinrichtungen an mindestens einer, vorteilhaft an zwei oder sogar an drei Seiten, sehr nahe nebeneinander angeordnet sein können, sich möglicherweise sogar berühren können, um geringe Zwischenspalte zu erreichen.In a further advantageous embodiment of the invention, electrical connections to a heating device are provided only on one side of the carrier, namely for all partial heating surfaces. An aforementioned The temperature sensor or temperature limiter can be electrically contacted on this side. It can advantageously be provided that the electrical connections of the first partial heating surface are spatially somewhat separated or at a distance from the electrical connections of a second partial heating surface. Different so-called connection blocks or connection plug devices can also be provided. This makes the electrical connection easier when assembling the heating device or the hob. Furthermore, the other sides of the heating device can then remain free of electrical connections that inevitably protrude beyond the outside or the outer edge. This creates the possibility that the heating devices can be arranged very close to one another on at least one, advantageously on two or even three sides, and can possibly even touch one another in order to achieve small gaps between them.

Elektrische Anschlüsse können vorteilhaft auf bekannte Art und Weise ausgestaltet sein mit Steckanschlüssen, vorteilhaft Steckanschlussfahnen, die von der Heizeinrichtung nach außen abstehen. Anschlussabschnitte der Steckanschlussfahnen können nach innen reichen, so dass daran Enden der Heizleiter angeschweißt sein können.Electrical connections can advantageously be designed in a known manner with plug connections, advantageously plug connection lugs that protrude outwards from the heating device. Connection sections of the plug connection lugs can extend inwards so that the ends of the heating conductors can be welded to them.

In einem Kochfeld können Heizeinrichtungen unter Umständen sogar derart nahe beieinander angeordnet sein, dass sich ihre Außenränder berühren. Gerade wenn Teil-Heizflächen von zwei nebeneinanderliegenden Heizeinrichtungen gemeinsam betrieben werden in einem vorgenannten Brückenbetrieb, ist es vorteilhaft, wenn ein nicht-beheizter Bereich dazwischen möglichst schmal ist. Möglicherweise kann in diesem Bereich sogar ein hochgezogener Außenrand des Trägers dünner sein als in anderen Bereichen, in denen keine weitere Heizeinrichtung direkt daneben vorgesehen ist oder sogar berührt. Dann addieren sich nämlich die Dicken zweier solcher sich berührender dünner Außenränder auf, wodurch wiederum ein insgesamt ausreichend dicker Außenrand geschaffen werden kann. Des Weiteren stört hier das seitliche Übertragen von Wärme nicht so sehr, da die auf diese Art und Weise beheizte benachbarte Heizeinrichtung ja selbst sehr temperaturfest ist.In a hob, heating devices can sometimes even be arranged so close to one another that their outer edges touch. Especially when partial heating surfaces of two adjacent heating devices are operated together in a bridge operation as mentioned above, it is advantageous if a non-heated area in between is as narrow as possible. In this area, a raised outer edge of the support can even be thinner than in other areas where no other heating device is provided directly next to it or even touches it. In this case, the thicknesses of two such touching thin outer edges add up, which in turn can create an overall sufficiently thick outer edge. Furthermore, the lateral transfer of heat is not so disruptive here, since the neighboring heating device heated in this way is itself very temperature-resistant.

In nochmals weiterer Ausgestaltung der Erfindung kann vorgesehen sein, dass es zwei Arten von Heizeinrichtungen gibt, die spiegelsymmetrisch zueinander ausgebildet sind. Sie können dann nebeneinander in einem erfindungsgemäßen Kochfeld angeordnet sein. Eine mittig zwischen den beiden Heizeinrichtungen verlaufende Mittellinie bildet eine Spiegelsymmetrieachse für die beiden Heizeinrichtungen. Dabei ist bei jeder Heizeinrichtung die erste Teil-Heizfläche zu der benachbarten Heizeinrichtung bzw. deren erster Teil-Heizfläche hin angeordnet, so dass diese beiden nebeneinanderliegen und eine Brückenfunktion aufweisen können.In yet another embodiment of the invention, it can be provided that there are two types of heating devices that are mirror-symmetrical to one another. They can then be arranged next to one another in a hob according to the invention. A center line running centrally between the two heating devices forms a mirror-symmetrical axis for the two heating devices. In this case, the first partial heating surface of each heating device is arranged towards the neighboring heating device or its first partial heating surface, so that these two lie next to one another and can have a bridging function.

In einer weiteren Ausgestaltung eines Kochfelds können die erfindungsgemäßen rechteckigen Heizeinrichtungen auch mit weiteren Heizeinrichtungen kombiniert werden, die rund oder oval ausgebildet sind. So kann beispielsweise ein linker oder ein vorderer Bereich des Kochfelds mit rechteckigen Heizeinrichtungen einerseits oder runden bzw. ovalen Heizeinrichtungen andererseits bedeckt sein, und der jeweils andere Bereich mit der anders geformten Art von Heizeinrichtungen.In a further embodiment of a hob, the rectangular heating devices according to the invention can also be combined with other heating devices that are round or oval. For example, a left or front area of the hob can be covered with rectangular heating devices on the one hand or round or oval heating devices on the other hand, and the other area with the differently shaped type of heating device.

In nochmals weiterer Ausgestaltung der Erfindung kann vorgesehen sein, dass in einem hinteren Bereich des Kochfelds genau zwei gleich große Heizeinrichtungen nebeneinander angeordnet sind. Vorteilhaft sind diese beide rechteckig, bevorzugt nicht-quadratisch. Besonders vorteilhaft kann ein Abstand zwischen ihnen maximal 10 cm betragen, vorteilhaft zwischen 2 cm und 5 cm betragen. In einem vorderen Bereich des Kochfelds sind ebenfalls genau zwei gleich große Heizeinrichtungen nebeneinander angeordnet, bevorzugt quadratisch. Auf mindestens der linken oder der rechten Seite des Kochfelds liegen die beiden Heizeinrichtungen mit jeweils den Außenseiten ihrer ersten Teil-Heizflächen benachbart und parallel zueinander, so dass sie gut gebrückt werden können. Dabei sind jeweils die Außenseiten ihrer ersten Teil-Heizflächen deckungsgleich bzw. liegen jeweils über die gleiche Länge parallel nebeneinander. Dann kann eine Brückenfunktion von vorne nach hinten vorgesehen sein.In yet another embodiment of the invention, it can be provided that in a rear area of the hob, exactly two heating devices of the same size are arranged next to one another. These are both advantageously rectangular, preferably not square. Particularly advantageously, a distance between them can be a maximum of 10 cm, advantageously between 2 cm and 5 cm. In a front area of the hob, exactly two heating devices of the same size are also arranged next to one another, preferably square. On at least the left or right side of the hob, the two heating devices are located with the outer sides of their first partial heating surfaces adjacent and parallel to one another, so that they can be easily bridged. The outer sides of their first partial heating surfaces are congruent or lie parallel to one another over the same length. A bridging function from front to back can then be provided.

In nochmals weiterer Ausgestaltung der vorgenannten Ausbildung eines Kochfelds können jeweils Heizeinrichtungen mit gleicher Form vorgesehen sein, insbesondere ausschließlich Heizeinrichtungen mit quadratischer Form. Zwei hintereinanderliegende Heizeinrichtungen verlaufen mit ihren zueinander weisenden Außenrändern parallel zueinander, vorteilhaft mit sehr geringem Abstand wie zuvor erläutert. Sie sind aber nicht völlig deckungsgleich, sondern seitlich etwas zueinander versetzt, beispielsweise um 2 cm bis 5 cm. In den Eckbereichen am überdeckenden Abschnitt sind jeweils erste Teil-Heizflächen vorgesehen, vorteilhaft in quadratischer Form, und zwar derart, dass diese nebeneinander und miteinander deckungsgleich sind. So können sie gut miteinander gebrückt werden im gemeinsamen Betrieb. Besonders große Bräter können dann über die beiden komplett betriebenen Heizeinrichtungen im Brückenbetrieb beheizt werden.In yet another embodiment of the above-mentioned design of a hob, heating devices of the same shape can be provided, in particular exclusively heating devices of a square shape. Two heating devices arranged one behind the other run parallel to each other with their outer edges facing each other, advantageously with a very small distance as previously explained. However, they are not completely congruent, but are slightly offset from each other, for example by 2 cm to 5 cm. In the corner areas of the overlapping section, first partial heating surfaces are provided, advantageously in a square shape, in such a way that they are next to each other and congruent with each other. This means that they can be easily bridged together when used together. Particularly large roasting pans can then be heated by the two fully operating heating devices in bridge operation.

Grundsätzlich können bei einem erfindungsgemäßen Kochfeld zwar auch Heizflächen bzw. Teil-Heizflächen von unterschiedlichen Heizeinrichtungen gebrückt werden, die grundsätzlich unterschiedliche Form aufweisen. Vorteilhaft werden aber nur rechteckig ausgebildete Teil-Heizflächen gemeinsam betrieben als Brückenfunktion, selbst wenn im Kochfeld auch runde oder ovale Heizeinrichtungen vorgesehen sind.In principle, heating surfaces or partial heating surfaces of different heating devices that have fundamentally different shapes can be bridged in a hob according to the invention. However, it is advantageous if only rectangular partial heating surfaces are operated together as a bridge function, even if round or oval heating devices are also provided in the hob.

Kurzbeschreibung der ZeichnungenShort description of the drawings

Ausführungsbeispiele der Erfindung und Hintergrundbeispiele sind in den Zeichnungen schematisch dargestellt und werden im Folgenden näher erläutert. In den Zeichnungen zeigen:

Fig. 1
eine Draufsicht auf eine erste Ausgestaltung einer Heizeinrichtung mit zwei Heizelementen, die jeweils eine Teil-Heizfläche definieren, wobei die Heizeinrichtung quadratische Außenform aufweist,
Fig. 2
eine funktional schematisierte Darstellung der Heizeinrichtung aus Fig. 1 mit einer quadratischen ersten Teil-Heizfläche und einer L-förmigen zweiten Teil-Heizfläche,
Fig. 3
eine Draufsicht auf eine weitere Heizeinrichtung aufbauend auf derjenigen entsprechend Fig. 1 mit rechteckiger Außenform,
Fig. 4
eine funktional schematisierte Darstellung der Heizeinrichtung aus Fig. 3 mit einer quadratischen ersten Teil-Heizfläche und einer L-förmigen zweiten Teil-Heizfläche,
Fig. 5
gemäß der Erfindung eine Anordnung von zwei Heizeinrichtungen ähnlich Fig. 1 bzw. 2 direkt nebeneinander, die beispielsweise in einem Kochfeld vorhanden sein könnte, wobei die beiden ersten Teil-Heizflächen mit einer Außenseite deckungsgleich nebeneinander liegen,
Fig. 6
gemäß der Erfindung eine Abwandlung der Anordnung aus Fig. 5 mit Verwendung von Heizeinrichtungen ähnlich Fig. 3 bzw. 4,
Fig. 7
ein erfindungsgemäßes Kochfeld mit vier Heizeinrichtungen und einer Bedieneinrichtung, wobei links und rechts jeweils genau eine Heizeinrichtung ähnlich Fig. 1 und eine Heizeinrichtung gemäß Fig. 3 vorgesehen ist,
Fig. 8
ein weiteres erfindungsgemäßes Kochfeld mit vier quadratischen Heizeinrichtungen und einer Bedieneinrichtung, wobei vier Heizeinrichtungen entsprechend Fig. 1 vorgesehen sind und zueinander jeweils versetzt sind,
Fig. 9
ein weiteres erfindungsgemäßes Kochfeld mit vier Heizeinrichtungen und einer Bedieneinrichtung, wobei links eine Anordnung von Heizeinrichtungen entsprechend Fig. 4 vorgesehen ist und rechts zwei unterschiedlich große runde Heizeinrichtungen vorgesehen sind und
Fig. 10
ein weiteres erfindungsgemäßes Kochfeld mit vier Heizeinrichtungen und einer Bedieneinrichtung, wobei vier Heizeinrichtungen mit gleicher Außenform nahe beieinander oder angrenzend aneinander vorgesehen sind, deren jeweilige erste Teil-Heizflächen eine geschlossene rechteckige Fläche bilden.
Embodiments of the invention and background examples are shown schematically in the drawings and are explained in more detail below. In the drawings:
Fig.1
a plan view of a first embodiment of a heating device with two heating elements, each defining a partial heating surface, the heating device having a square outer shape,
Fig. 2
a functionally schematic representation of the heating device Fig.1 with a square first partial heating surface and an L-shaped second partial heating surface,
Fig.3
a plan view of another heating device based on the one according to Fig.1 with rectangular outer shape,
Fig.4
a functionally schematic representation of the heating device Fig.3 with a square first partial heating surface and an L-shaped second partial heating surface,
Fig.5
according to the invention an arrangement of two heating devices similar Fig.1 or 2 directly next to each other, which could be present in a hob, for example, with the first two partial heating surfaces lying congruently next to each other with an outer side,
Fig.6
according to the invention a modification of the arrangement of Fig.5 using heating devices similar Fig. 3 or 4,
Fig.7
a hob according to the invention with four heating devices and one operating device, with exactly one heating device on the left and right, similar to Fig.1 and a heating device according to Fig. 3 is provided,
Fig.8
another cooking surface according to the invention with four square heating devices and a control device, wherein four heating devices are arranged in accordance with Fig.1 are provided and are offset from each other,
Fig.9
another cooking surface according to the invention with four heating devices and a control device, whereby on the left an arrangement of heating devices according to Fig.4 is provided and on the right two different sized round heating devices are provided and
Fig.10
a further hob according to the invention with four heating devices and an operating device, wherein four heating devices with the same external shape are provided close to one another or adjacent to one another, the respective first partial heating surfaces of which form a closed rectangular surface.

In der Fig. 1 ist eine als Strahlungsheizeinrichtung ausgebildete Heizeinrichtung 11a in Draufsicht dargestellt. Die Heizeinrichtung 11a ist, wie für Strahlungsheizeinrichtungen üblich, in einer Blechschale 12a angeordnet, die hier quadratische Außenform aufweist. Die Heizeinrichtung 11a weist des Weiteren einen Träger 13a auf, der in der Blechschale 12a angeordnet ist und der aus geeignetem thermisch dämmendem und elektrisch isolierendem Material besteht. Um den Träger 13a herum verläuft ein breiter Außenrand, der nach oben absteht und ein separates Teil oder bei der Herstellung integral angeformt sein kann. Er besteht aus einem ähnlichen Material wie der Träger 13a. Der Außenrand 15a weist aus Herstellungsgründen abgerundete Ecken auf. Bis auf diese abgerundeten Ecken ist der Außenrand 15a genauso wie der Träger 13a rechteckig bzw. hier sogar quadratisch. Des Weiteren weist der Außenrand 15a eine Innenseite 16a auf, die sozusagen die Oberseite des Trägers 13a begrenzt. Ebenso weist der Außenrand 15a eine Außenseite 17a auf, mit der er weitgehend an einem hochgezogenen Rand der Blechschale 12a anliegt.In the Fig.1 a heating device 11a designed as a radiant heating device is shown in plan view. The heating device 11a is, as is usual for radiant heating devices, arranged in a sheet metal shell 12a, which here has a square outer shape. The heating device 11a also has a carrier 13a, which is arranged in the sheet metal shell 12a and which consists of a suitable thermally insulating and electrically insulating material. A wide outer edge runs around the carrier 13a, which protrudes upwards and can be a separate part or integrally formed during production. It consists of a similar material to the carrier 13a. The outer edge 15a has rounded corners for manufacturing reasons. Except for these rounded corners, the outer edge 15a is rectangular just like the carrier 13a, or here even square. The outer edge 15a also has an inner side 16a, which so to speak delimits the top side of the carrier 13a. Likewise, the outer edge 15a has an outer side 17a, with which it largely rests against a raised edge of the sheet metal shell 12a.

Detaillierte Beschreibung der AusführungsbeispieleDetailed description of the implementation examples

Auf dem Träger 13a ist ein erstes Heizelement 19a vorgesehen, das aus einem ersten Heizleiter 20a besteht, und zwar aus einem einzigen Heizleiter 20a. Dieser längliche Heizleiter 20a ist in zwei parallelen Spuren mäanderförmig verlegt und weist zwei erste Anschlüsse 21a auf, die durch den Außenrand 15a nach außen ragen zum elektrischen Anschluss. In der Fig. 2 ist zu ersehen, dass das erste Heizelement 19a mit dem ersten Heizleiter 20a eine erste Teil-Heizfläche 1THa bildet, die nicht nur rechteckig ist, sondern die als quadratisch angesehen werden kann. Zwar verläuft der erste Heizleiter 20a um eine Erhebung 14a des Trägers 13a herum, so dass im Bereich dieser Erhebung 14a kein Heizleiter und somit keine Beheizung vorgesehen ist. Dennoch kann die genannte erste Teil-Heizfläche 1THa als den Außenumrandungen entsprechend quadratisch angesehen werden. Dies gilt auch für die Ecken gemäß Fig. 2, insbesondere die rechte obere und die rechte untere Ecke.A first heating element 19a is provided on the carrier 13a, which consists of a first heating conductor 20a, namely a single heating conductor 20a. This elongated heating conductor 20a is laid in a meandering manner in two parallel tracks and has two first connections 21a, which protrude outwards through the outer edge 15a for electrical connection. In the Fig.2 it can be seen that the first heating element 19a with the first heating conductor 20a forms a first partial heating surface 1THa, which is not only rectangular, but can be considered to be square. The first heating conductor 20a runs around a raised portion 14a of the carrier 13a, so that no heating conductor and thus no heating is provided in the area of this raised portion 14a. Nevertheless, the first partial heating surface 1THa can be considered to be square according to the outer edges. This also applies to the corners according to Fig.2 , especially the upper right and lower right corners.

Die Heizeinrichtung 11a weist noch ein zweites Heizelement 22a auf, das sozusagen die restliche Fläche des Trägers 13a bedeckt. Dazu ist ein zweiter Heizleiter 23a mäanderförmig mit unterschiedlicher Breite auf dem Träger 13a verlegt, er bildet die zweite Teil-Heizfläche 2THa. Der zweite Heizleiter 23a des zweiten Heizelements 22a ist an zweite Anschlüsse 24a geführt, die wiederum durch den Außenrand 15a nach außen ragen. Die zweite Teil-Heizfläche ist, wie die Fig. 2 zeigt, L-förmig bzw. winklig ausgebildet mit denselben Vereinfachungen wie zuvor zur ersten Teil-Heizfläche 1THa ausgeführt. Da der Träger 13a quadratisch ist, und die erste Teil-Heizfläche 1THa ebenfalls quadratisch ist und in die rechte obere Ecke des Trägers 13a positioniert ist, weist das zweite Heizelement 22a bzw. die entsprechende zweite Teil-Heizfläche 2THa eine L-Form mit zwei gleich langen und gleich breiten Schenkeln auf.The heating device 11a also has a second heating element 22a, which covers the remaining surface of the carrier 13a. For this purpose, a second heating conductor 23a is laid in a meandering shape with different widths on the carrier 13a, it forms the second partial heating surface 2THa. The second heating conductor 23a of the second heating element 22a is led to second connections 24a, which in turn protrude outwards through the outer edge 15a. The second partial heating surface is, like the Fig. 2 shows, L-shaped or angled with the same simplifications as previously carried out for the first partial heating surface 1THa. Since the carrier 13a is square, and the first partial heating surface 1THa is also square and is positioned in the upper right corner of the carrier 13a, the second heating element 22a or the corresponding second partial heating surface 2THa has an L-shape with two legs of equal length and width.

Die beiden Teil-Heizflächen 1THa und 2THa bilden gemeinsam eine Heizfläche Ha der Heizeinrichtung 11a, insgesamt kann also eine quadratische Fläche beheizt werden. Aus dem Verlegemuster der Fig. 1 für die beiden Heizleiter 20a und 23a ist zu ersehen, dass sie sich nicht überkreuzen, was relativ selbstverständlich ist. Des Weiteren überkreuzen und überlappen sich aber auch nicht die jeweiligen Teil-Heizflächen, die von jedem der Heizleiter 20a und 23a gebildet werden.The two partial heating surfaces 1THa and 2THa together form a heating surface Ha of the heating device 11a, so a total of a square area can be heated. From the laying pattern of the Fig.1 For the two heating conductors 20a and 23a it can be seen that they do not cross over, which is relatively obvious. Furthermore, the respective partial heating surfaces formed by each of the heating conductors 20a and 23a do not cross over or overlap.

Rechts ist an die Heizeinrichtung 11a ein Stabregler 27a angebracht, der ausgebildet ist wie im Stand der Technik bekannt. Der Stabregler 27a weist ein Stabreglergehäuse 28a auf, von dem aus ein länglicher thermomechanischer Temperaturfühler 29a in die Heizeinrichtung 11a hineinragt bzw. oberhalb von der Heizfläche Ha verläuft. Der Temperaturfühler 29a reicht bis zu der Erhebung 14a des Trägers 13a und wird von dieser gehalten gegen ein Drücken nach unten. Somit ist ersichtlich, dass in der Fig. 1 der Stabregler 27a lediglich die erste Teil-Heizfläche 1THa thermisch überwacht und bei zu hoher Temperatur abschaltet, wie dies an sich aus dem Stand der Technik bekannt ist und nicht näher erläutert werden muss. Für die Fig. 2 ist dargestellt, wie der Temperaturfühler 29a verlängert sein könnte mit einer gestrichelt dargestellten Verlängerung 29a', die dann auch einen Teil der zweiten Teil-Heizfläche 2THa überdeckt. Somit kann auch das zweite Heizelement 22a thermisch überwacht werden, dies muss aber nicht sein. Hier kann der Stabregler als Temperaturfühler kompensiert sein, wie dies aus den vorgenannten DE 3705260 A1 und DE 102004058473 A1 bekannt ist.On the right, a rod regulator 27a is attached to the heating device 11a, which is designed as known in the prior art. The rod regulator 27a has a rod regulator housing 28a, from which an elongated thermomechanical temperature sensor 29a protrudes into the heating device 11a or runs above the heating surface Ha. The temperature sensor 29a reaches up to the elevation 14a of the carrier 13a and is held by it against being pressed downwards. It is thus clear that in the Fig.1 the rod controller 27a only thermally monitors the first partial heating surface 1THa and switches it off if the temperature is too high, as is known from the prior art and does not need to be explained in more detail. For the Fig.2 is shown how the temperature sensor 29a could be extended with a dashed extension 29a', which then also covers part of the second partial heating surface 2THa. Thus, the second heating element 22a can also be thermally monitored, but this does not have to be the case. Here, the rod controller can be compensated as a temperature sensor, as can be seen from the above-mentioned DE 3705260 A1 and DE 102004058473 A1 is known.

Die ersten Anschlüsse des ersten Heizelements 19a bzw. des ersten Heizleiters 20a sind an das Stabreglergehäuse 29 geführt bzw. elektrisch verbunden. Die zweiten Anschlüsse 24a des zweiten Heizleiters 23a sind in einem sogenannten Anschlussstein, vorteilhaft bestehend aus keramischem Material, gehalten. So können sie einfach von der Seite mit einem Stecker elektrisch kontaktiert werden. Der erste Anschluss des Anschlussteins ist über eine nicht eingezeichnete Litze mit dem Kontakt des Stabreglers 27a verbunden, so dass beim Schalten des Stabreglers 27a beide Heizelemente ausgeschaltet werden, auch wenn nur das erste Heizelement überwacht wird.The first connections of the first heating element 19a or the first heating conductor 20a are led to the rod controller housing 29 or are electrically connected. The second connections 24a of the second heating conductor 23a are held in a so-called connection block, advantageously made of ceramic material. This means that they can easily be electrically contacted from the side using a plug. The first connection of the connection block is connected to the contact of the rod controller 27a via a wire (not shown), so that when the rod controller 27a is switched, both heating elements are switched off, even if only the first heating element is being monitored.

In der Fig. 3 ist als Abwandlung eine weitere Heizeinrichtung 11b dargestellt, wobei die Heizeinrichtung 11b eine rechteckige Außenform aufweist. In einer Blechschale 12b mit rechteckiger Außenform ist ein entsprechend passender Träger 13b eingesetzt mit einem hochgezogenen Außenrand 15b, der eine Innenseite 16b und eine Außenseite 17b aufweist. Auch auf dem Träger 13b ist eine Erhebung 14b vorgesehen. Aus einem Vergleich der Fig. 1 und 3 ist zu ersehen, dass die Heizeinrichtung 11b der Fig. 3 sozusagen auf der Heizeinrichtung 11a der Fig. 1 basiert, wobei nach links sozusagen etwas angesetzt ist.In the Fig.3 As a modification, a further heating device 11b is shown, whereby the heating device 11b has a rectangular outer shape. A correspondingly suitable carrier 13b is inserted into a sheet metal shell 12b with a rectangular outer shape, with a raised outer edge 15b, which has an inner side 16b and an outer side 17b. A raised area 14b is also provided on the carrier 13b. From a comparison of the Fig.1 and 3 It can be seen that the heating device 11b of the Fig.3 so to speak on the heating device 11a of the Fig.1 based, with something added to the left, so to speak.

Die Heizeinrichtung 11b weist ein erstes Heizelement 19b auf, das von einem ersten Heizleiter 20b gebildet wird, der erste Anschlüsse 21b aufweist. Dieses erstes Heizelement 19b entspricht genau dem ersten Heizelement 19a aus der Fig. 1. Eine davon gebildete erste Teil-Heizfläche 1THb ist, wie die Fig. 4 darunter zeigt, quadratisch und sitzt sozusagen in der rechten oberen Ecke der gesamten Heizfläche Hb der Heizeinrichtung 11 b.The heating device 11b has a first heating element 19b, which is formed by a first heating conductor 20b, which has first connections 21b. This first heating element 19b corresponds exactly to the first heating element 19a from the Fig.1 . A first partial heating surface 1THb formed by this is, as the Fig.4 below, is square and sits, so to speak, in the upper right corner of the entire heating surface Hb of the heating device 11 b.

Ein zweites Heizelement 22b füllt bis auf die Erhebung 14b die restliche Heizfläche Hb aus und bildet mit einem zweiten Heizleiter 23b die zweite Teil-Heizfläche 2THb, wie ebenfalls aus der Fig. 4 zu ersehen ist. Auch aus dem Vergleich der Fig. 2 und 4 miteinander ist gut zu ersehen, dass bei der zweiten Heizeinrichtung 11b insbesondere bei der zweiten Teil-Heizfläche 2THb links etwas angesetzt ist, nämlich mit dem Maß, das die zweite Heizeinrichtung 11b in der Richtung von links nach rechts länger ist als die erste Heizrichtung 11a. Der zweite Heizleiter 23b ist mit zweiten elektrischen Anschlüssen 24b durch den Außenrand 15b nach außen elektrisch anschließbar.A second heating element 22b fills the remaining heating surface Hb except for the elevation 14b and forms the second partial heating surface 2THb with a second heating conductor 23b, as can also be seen from the Fig.4 Also from the comparison of the Fig.2 and 4 together, it is clearly visible that in the second heating device 11b, in particular in the second partial heating surface 2THb on the left, something is added, namely to the extent that the second heating device 11b is longer in the direction from left to right than the first heating direction 11a. The second heating conductor 23b can be electrically connected to the outside with second electrical connections 24b through the outer edge 15b.

Auch bei der Heizeinrichtung 11b ist ein Stabregler 27b vorgesehen, der ein Stabreglergehäuse 28b mit einem länglichen Temperaturfühler 29b aufweist. In der Fig. 4 ist dargestellt, dass der längliche Temperaturfühler 29b nach links gestrichelt dargestellt mit einer Verlängerung 29b' bis über die gesamte Heizfläche Hb reichen könnte und somit auch noch voll über diesen Bereich der zweiten Teil-Heizfläche 2THb, der hier etwas breiter ist als bei der Fig. 1.The heating device 11b also has a rod controller 27b which has a rod controller housing 28b with an elongated temperature sensor 29b. Fig.4 It is shown that the elongated temperature sensor 29b, shown dashed to the left, with an extension 29b' could reach over the entire heating surface Hb and thus also fully over this area of the second partial heating surface 2THb, which is somewhat wider here than in the Fig.1 .

Aus den Fig. 2 und 4 ist zu ersehen, dass die jeweilige erste Teil-Heizfläche 1TH auch an beliebiger anderer Stelle auf dem Träger 13 bzw. innerhalb dessen Heizfläche H angeordnet sein könnte. Dann wären ggf. die elektrischen Zuleitungen aber schwieriger zu verlegen, wobei dies machbar ist, wie nachfolgend noch dargelegt wird.From the Fig.2 and 4 it can be seen that the respective first partial heating surface 1TH could also be arranged at any other location on the carrier 13 or within its heating surface H. In this case, however, the electrical supply lines would be more difficult to lay, although this is feasible, as will be explained below.

In der Fig. 5 ist eine Anordnung 31a von zwei Heizeinrichtungen 11a gemäß bzw. ähnlich der Darstellung der Fig. 2 gezeigt. Allerdings ist erkennbar nur die linke Heizeinrichtung 11a genau wie in Fig. 1 bzw. Fig. 2 ausgebildet, die rechte Heizeinrichtung 11a' ist nur prinzipiell gleich ausgebildet, also mit gleich großen Teil-Heizflächen. Genau genommen ist sie spiegelsymmetrisch zur linken Heizeinrichtung 11a ausgebildet mit einer Spiegelachse entlang einer Mittellinie 32a, die zwischen den beiden Heizeinrichtungen 11a und 11a' verläuft.In the Fig.5 is an arrangement 31a of two heating devices 11a according to or similar to the representation of the Fig.2 However, only the left heating device 11a is visible exactly as in Fig.1 or. Fig.2 designed, the right heating device 11a' is only designed in principle the same, i.e. with equally large partial heating surfaces. Strictly speaking, it is designed mirror-symmetrically to the left heating device 11a with a mirror axis along a center line 32a that runs between the two heating devices 11a and 11a'.

Die beiden ersten Teil-Heizflächen 1THa und 1THa' grenzen mit ihren zueinander weisenden Seiten aneinander an. Dabei sind sie diesbezüglich deckungsgleich, weil sie auch gleich groß sind. Somit ist hieraus zu ersehen, dass bei der Anordnung 31a mehrere unterschiedlich große Kochgefäße beheizt werden können bzw. Heizzonen gebildet werden können. Das kleinste Kochgefäß kann nur von einer der beiden ersten Teil-Heizflächen 1THa oder 1THa' beheizt werden. Ein nächstgrößeres kann von einer gesamten Heizeinrichtung 11a oder 11a beheizt werden, also beispielsweise 1THa und 2THa. Ein kleinerer länglicher bzw. ovaler Bräter kann von den beiden ersten Teil-Heizflächen 1THa und 1THa' im gemeinsamen Betrieb beheizt werden. Ein nochmals größerer länglicher Bräter oder ein sehr großer Kochtopf könnte von den beiden Heizeinrichtungen 11a und 11a' gemeinsam beheizt werden. Aus der Form der zweiten Teil-Heizflächen 2THa bzw. 2THa' ist auf den ersten Blick zu ersehen, dass deren alleiniger isolierter Betrieb keinen Sinn macht.The two first partial heating surfaces 1THa and 1THa' are adjacent to one another with their sides facing each other. In this respect, they are congruent because they are also the same size. It can therefore be seen that with the arrangement 31a, several cooking vessels of different sizes can be heated or heating zones can be formed. The smallest cooking vessel can only be heated by one of the two first partial heating surfaces 1THa or 1THa'. A next larger vessel can be heated by an entire heating device 11a or 11a, for example 1THa and 2THa. A smaller, elongated or oval roaster can be heated by the two first partial heating surfaces 1THa and 1THa' in joint operation. An even larger, elongated roaster or a very large cooking pot could be heated by the two heating devices 11a and 11a' together. From the shape of the second partial heating surfaces 2THa or 2THa', it is clear at first glance that their isolated operation alone makes no sense.

In der Fig. 6 ist eine weitere Anordnung 31b dargestellt, welche grundsätzlich ähnlich aufgebaut ist wie diejenige aus Fig. 5. Links ist eine Heizeinrichtung 11b gemäß Fig. 3 und 4 vorgesehen. Rechts direkt daneben und nur durch eine Mittellinie 32b getrennt ist eine weitere Heizeinrichtung 11b' vorgesehen, die gleich große und gleiche Außenform aufweist. Sie ist, ähnlich wie zuvor zu Fig. 5 beschrieben, spiegelsymmetrisch zur linken Heizeinrichtung 11b ausgebildet, wodurch es möglich ist, dass die beiden ersten Teil-Heizflächen 1THb und 1THb' spiegelsymmetrisch sind und mit ihrer zueinander weisenden Außenseite nahezu aneinander anliegen.In the Fig.6 A further arrangement 31b is shown, which is basically constructed similarly to that of Fig.5 On the left is a heating device 11b according to Fig. 3 and 4 Directly to the right and separated only by a center line 32b, another heating device 11b' is provided, which has the same size and the same external shape. It is, similar to the one described above, Fig.5 described, is designed mirror-symmetrically to the left heating device 11b, whereby it is possible for the two first partial heating surfaces 1THb and 1THb' to be mirror-symmetrical and to almost abut one another with their mutually facing outer sides.

Bei den Darstellungen der Fig. 5 ff. ist die Dicke des jeweilige Außenrands 15 nicht berücksichtigt, wenn gezeigt wird, wie Teil-Heizflächen oder gesamte Heizflächen aneinander anliegen können bzw. sich fortsetzen können. Das der Erfindung zugrunde liegende Prinzip ist aber dennoch gut verständlich und nachvollziehbar.In the representations of the Fig.5 ff., the thickness of the respective outer edge 15 is not taken into account when showing how partial heating surfaces or entire heating surfaces can lie against one another or can continue. However, the principle underlying the invention is nevertheless easy to understand and comprehend.

Bei der Anordnung 31b gemäß Fig. 6 kann mit den jeweiligen ersten Teil-Heizflächen 1THb und 1THb' beheizt werden wie zuvor zur Fig. 5 beschrieben. Durch die nun etwas größeren zweiten Teil-Heizflächen 2THb kann möglicherweise eine verbesserte Anpassung an unterschiedlich große Kochgefäße erreicht werden.In the case of order 31b pursuant to Fig.6 can be heated with the respective first partial heating surfaces 1THb and 1THb' as previously described for Fig.5 described. The now slightly larger second partial heating surfaces 2THb may possibly enable improved adaptation to cooking vessels of different sizes.

In der Fig. 7 ist eine Draufsicht auf ein erfindungsgemäßes Kochfeld 35 in einer ersten Ausgestaltung der Erfindung dargestellt. Das Kochfeld 35 weist vier Heizeinrichtungen 11 auf, nämlich zwei Heizeinrichtungen 11a bzw. 11a' mit quadratischer Außenform und zwei Heizeinrichtungen 11b bzw. 11b' mit rechteckiger Außenform. Es könnten bei einem Kochfeld aber auch noch mehr entsprechend ausgebildete Heizeinrichtungen vorgesehen sein, beispielsweise sechs oder acht Heizeinrichtungen. Vorne in der Mitte ist eine Bedieneinrichtung 36 angeordnet, vorteilhaft mit Berührungsschaltern.In the Fig.7 is a plan view of a hob 35 according to the invention in a first embodiment of the invention. The hob 35 has four heating devices 11, namely two heating devices 11a or 11a' with a square outer shape and two heating devices 11b or 11b' with a rectangular outer shape. However, a hob could also have more correspondingly designed heating devices, for example six or eight heating devices. An operating device 36 is arranged in the front center, advantageously with touch switches.

Bei dem Kochfeld 35 sind links und rechts jeweils eine Heizeinrichtung 11a bzw. 11a' mit quadratischer Außenform und eine Heizeinrichtung 11b bzw. 11b' mit rechteckiger Außenform kombiniert und nahe beieinander eingebaut. Sie können sich sogar berühren. Es ist zu ersehen, wie bei der Heizeinrichtung 11a' entsprechend der Fig. 5 die erste Teil-Heizfläche 1THa' in der linken oberen Ecke platziert ist. Rechts und darunter befindet sich die zweite Teil-Heizfläche 2THa'.In the cooking surface 35, a heating device 11a or 11a' with a square outer shape and a heating device 11b or 11b' with a rectangular outer shape are combined on the left and right and installed close to each other. They can even touch each other. It can be seen how the heating device 11a' is arranged in accordance with the Fig.5 the first partial heating surface 1THa' is placed in the upper left corner. To the right and below is the second partial heating surface 2THa'.

Bei der anderen oberen Heizeinrichtung 11b entsprechend den Fig. 3 und 4 ist die erste Teil-Heizfläche 1THb in der linken unteren Ecke angeordnet, und nach rechts und darüber erstreckt sich die L-förmige zweite Teil-Heizfläche 2THb. Somit kann mit den beiden ersten Teil-Heizflächen 1THa' und 1THb wieder eine durchgängige Brücke zum Beheizen eines länglichen Kochgefäßes betrieben werden.For the other upper heating device 11b according to the Fig. 3 and 4 The first partial heating surface 1THb is arranged in the lower left corner, and the L-shaped second partial heating surface 2THb extends to the right and above it. This means that the two first partial heating surfaces 1THa' and 1THb can again be used to form a continuous bridge for heating an elongated cooking vessel.

Bei der rechten Anordnung der Heizeinrichtungen 11a' und 11b ist der Versatz anders gewählt als links als Beispiel für möglichst viele verschiedene Möglichkeiten zur Anordnung. Die beiden Heizeinrichtungen liegen zwar noch direkt aneinander an, auch die jeweils ersten Teil-Heizflächen 1THa' und 1THb. Allerdings sind die aneinander anliegenden Außenseiten nicht mehr deckungsgleich, sondern etwas zueinander versetzt. So können sie jeweils noch in den Ecken der jeweiligen Heizeinrichtung angeordnet sein, es können aber links und rechts im Kochfeld 35 dieselben Heizeinrichtungen 11 verwendet werden. Der Versatz der beiden ersten Teil-Heizflächen kann in der Praxis etwas verwundern, stört thermisch aber nur unwesentlich.In the right-hand arrangement of the heating devices 11a' and 11b, the offset is chosen differently than on the left as an example of as many different arrangement possibilities as possible. The two heating devices are still directly adjacent to one another, including the first partial heating surfaces 1THa' and 1THb. However, the adjacent outer sides are no longer congruent, but are slightly offset from one another. They can still be arranged in the corners of the respective heating device, but the same heating devices 11 can be used on the left and right in the hob 35. The offset of the first two partial heating surfaces can be a little surprising in practice, but it only causes a minor thermal disturbance.

Ein weiteres erfindungsgemäßes Kochfeld 135 gemäß Fig. 8 weist links zwei Heizeinrichtungen 11a entsprechend Fig. 1 und 2 auf, die aneinander anliegen, allerdings nicht deckungsgleich sind, sondern etwas versetzt sind. Ihre Außenform ist jeweils quadratisch. Die jeweils ersten Teil-Heizflächen 1THa liegen allerdings deckungsgleich aneinander an.Another cooking surface 135 according to the invention according to Fig.8 has two heating devices 11a on the left corresponding Fig. 1 and 2 which are adjacent to one another, but are not congruent but are slightly offset. Their outer shape is square. The first partial heating surfaces 1THa are, however, adjacent to one another.

Rechts sind zwei weitere quadratische Heizeinrichtungen 11a" aneinander, aber versetzt zueinander angeordnet. Dort ist eine jeweilige erste Teil-Heizfläche 1THa" zwar an einer Außenseite bzw. an den Außenrand anstoßend ausgebildet, aber nur an einer Außenseite. Sie ist sozusagen nicht in der Ecke angeordnet. Dadurch ist es möglich, dass die beiden Heizeinrichtungen 11a" versetzt zueinander angeordnet sind und die ersten Teil-Heizflächen 1THa" eben nicht in der Ecke sitzen, sie aber dennoch deckungsgleich nebeneinander angeordnet sind.On the right, two further square heating devices 11a" are arranged next to each other, but offset from each other. There, a respective first partial heating surface 1THa" is formed on an outer side or abutting the outer edge, but only on one outer side. It is not arranged in the corner, so to speak. This makes it possible for the two heating devices 11a" to be arranged offset from each other and the first partial heating surfaces 1THa" not to be in the corner, but they are nevertheless arranged congruently next to each other.

Aus einem Vergleich der Fig. 7 und 8 miteinander ist zu ersehen, dass bei dem Kochfeld 35 der Fig. 7 die Raumausnutzung im Kochfeld hinter der vorderen mittigen Bedieneinrichtung etwas besser ist.From a comparison of the Figs. 7 and 8 together it can be seen that in the case of the hob 35 the Fig.7 the use of space in the hob behind the front central control unit is somewhat better.

In der Fig. 9 ist ein weiteres erfindungsgemäßes Kochfeld 235 gezeigt, bei dem hinter einer vorderen mittigen Bedieneinrichtung 236 links eine Anordnung 31a entsprechend Fig. 5 einer Heizeinrichtung 11a und einer Heizeinrichtung 11a vorgesehen ist. In der rechten Hälfte des Kochfelds 235 befinden sich zwei runde Heizeinrichtungen, und zwar eine kleine runde Heizeinrichtung 35c vorne und eine größere runde Heizeinrichtung 35d hinten. Diese weisen überhaupt keine Unterteilung in unterschiedliche Teil-Heizflächen auf. Durch ihre jeweilige Größe sind sie an den zur Verfügung stehenden Platz auch wegen der Bedieneinrichtung 236 gut angepasst.In the Fig.9 another cooking surface 235 according to the invention is shown, in which behind a front central control device 236 on the left an arrangement 31a corresponding Fig.5 a heating device 11a and a heating device 11a is provided. In the right half of the hob 235 there are two round heating devices, namely a small round heating device 35c at the front and a larger round heating device 35d at the back. These are not divided into different partial heating surfaces at all. Due to their respective sizes they are well adapted to the available space, also due to the operating device 236.

Bei dem nochmals weiteren erfindungsgemäßen Kochfeld 335 gemäß der Fig. 10 schließlich ist in einem Heizbereich hinter einer schmalen langen Bedieneinrichtung 336 vorgesehen, vier Heizeinrichtungen 111a und 111a' ganz nah beieinander bzw. zusammenstoßend anzuordnen. Bei diesen Heizeinrichtungen 111a bzw. 111a', die jeweils quadratische Außenform aufweisen, ist als Besonderheit vorgesehen, dass ihre ersten Teil-Heizflächen 1THa und 1THa' in der Mitte bzw. im gemeinsamen Mittelbereich aneinander anstoßen und eine im Wesentlichen geschlossene bzw. durchgehende Fläche bilden. Sie sind alle gleich groß. Dabei sind die schräg gegenüberliegenden Heizeinrichtungen 111a bzw. 111a' jeweils identisch, die anderen spiegelsymmetrisch dazu. Die insgesamt von den vier beteiligten Teil-Heizflächen 1THa und 1THa' gebildete sehr große Fläche kann zum Beheizen sehr großer Kochgefäße wie beispielsweise Paella-Pfannen genutzt werden. Ebenso ist es denkbar, die vier gesamten Heizeinrichtungen 111a und 111a' mit allen Teil-Heizflächen 1THa, 1THa', 2THa und 2THa' komplett zu betreiben für solche Paella-Pfannen odgl..In the further inventive hob 335 according to the Fig.10 Finally, in a heating area behind a narrow, long operating device 336, four heating devices 111a and 111a' are arranged very close to each other or abutting each other. In these heating devices 111a and 111a', which each have a square outer shape, a special feature is provided that their first partial heating surfaces 1THa and 1THa' abut each other in the middle or in the common middle area and form an essentially closed or continuous surface. They are all the same size. The diagonally opposite heating devices 111a and 111a' are identical, the others are mirror-symmetrical to them. The very large surface formed by the four partial heating surfaces 1THa and 1THa' can be used to heat very large cooking vessels such as paella pans. It is also conceivable to operate the four entire heating devices 111a and 111a' with all partial heating surfaces 1THa, 1THa', 2THa and 2THa' completely for such paella pans or the like.

Die jeweils zugehörigen zweiten Teil-Heizflächen 2THa und 2THa' gruppieren sich dann insgesamt als eine Art rechteckiger Ring außen um sie herum. Auch hier sind unterschiedliche Brückenfunktionen bzw. Brückenanordnungen und somit insgesamt Zusammenschaltungen von Heizflächen bzw. Teil-Heizflächen möglich, um jeweils unterschiedlich große Kochgefäße optimal beheizen zu können. Technisch etwas schwieriger bzw. aufwendiger ist hier ein innerer elektrischer Anschluss an die ersten Teil-Heizflächen 1THa und 1THa', da sie eben nicht an eine freiliegende Außenseite der Heizeinrichtung angrenzen. Dies kann auch über eine entsprechende Heizleiterverlegung erfolgen. Die Heizeinrichtungen 111a bzw. 111a' so weit voneinander zu entfernen, dass in einem Zwischenraum eine elektrische Anschlussmöglichkeit geschaffen wird, ist zwar möglich. Ein derart großer Abstand birgt aber Probleme, die aus anderen Gründen nicht gewünscht sind, und verschlechtert die Brückenfunktion absehbar durch zu große Zwischenräume. Somit bleibt noch die Möglichkeit einer elektrischen Zuführung an eine Teil-Heizfläche von unten, oder aber mit nicht-glühenden elektrischen Zuführungen über die jeweilige zweite Teil-Heizfläche 2THa und 2THa' hinweg. Diese können beispielsweise deutlich dicker sein und somit beim gleichen Strom nicht erhitzt werden. Alternativ können die Heizleiter an diesen Stellen gerade gezogen werden, so dass sie nicht gewellt sind. Auf diese Weise glühen sie quasi fast nicht mehr sichtbar. Ein aufwendiger Anschluss von unten ist somit nicht erforderlich. Diese nicht mehr glühenden Heizleiter als Anschlüsse für eine Teil-Heizfläche können dann allgemein schmal an der Seite an den Heizleitern der anderen Teil-Heizfläche vorbeigeführt sein und diese Fläche somit nicht oder fast nicht beeinträchtigen. The respective associated second partial heating surfaces 2THa and 2THa' are then grouped together as a kind of rectangular ring around the outside. Here too, different bridge functions or bridge arrangements and thus overall interconnections of heating surfaces or partial heating surfaces are possible in order to be able to optimally heat cooking vessels of different sizes. Technically speaking, an internal electrical connection to the first partial heating surfaces 1THa and 1THa' is somewhat more difficult or complex here, since they do not border on an exposed outside of the heating device. This can also be done by laying appropriate heating conductors. It is possible to move the heating devices 111a and 111a' far enough apart from each other to create an electrical connection option in an intermediate space. However, such a large distance poses problems that are not desired for other reasons and will foreseeably impair the bridge function due to the gaps being too large. This leaves the possibility of an electrical supply to a partial heating surface from below, or with non-glowing electrical supplies across the respective second partial heating surface 2THa and 2THa'. These can, for example, be significantly thicker and thus not heated by the same current. Alternatively, the heating conductors can be pulled straight at these points so that they are not corrugated. In this way, they glow almost invisibly. A complex connection from below is therefore not necessary. These no longer glowing heating conductors as connections for a partial heating surface can then generally be led narrowly past the heating conductors of the other partial heating surface and thus have little or no effect on this surface.

Claims (14)

  1. Cooking hob (35, 235, 335) having a plurality of heating devices (11, 111), wherein two of these heating devices have:
    - a flat carrier (13) with an outer edge (15), which limits the carrier (13) to the outside,
    - said carrier (13) has a substantially rectangular shape,
    - two heating elements (19, 22) which each have at least one heating conductor (20, 23) and which together form a heating area (Ha, Hb),
    wherein
    - said heating conductors (20, 23) are fastened on said carrier (13),
    - each said heating element (19, 22) defines a partial heating area (1TH, 2TH),
    - said heating elements (19, 22) and/or said partial heating areas (1TH, 2TH) can be operated independently of one another and/or have respectively dedicated electrical connections,
    - the partial heating areas (1TH, 2TH) are situated inside the rectangular shape of the carrier (13), wherein
    wherein
    - said partial heating areas (1TH, 2TH) of said heating elements (19, 22) do not intersect,
    - a first partial heating area (1THa, 1THb) is rectangular and extends, by way of at least one of its outer sides, to an outer edge (15) or to an inner side (16) of said outer edge (15) of said carrier (13) and runs parallel in relation to said outer edge (15),
    characterized in that
    - a second partial heating area (2THa, 2THb) covers a rest of said carrier (13), which is left free by said first partial heating area (1THa, 1THb),
    - the heating device (11, 111) is a radiant heating device,
    - the second partial heating area (2THa, 2THb) has an L shape,
    wherein these two heating devices (11, 111) are arranged next to one another in such a way that the respective first partial heating areas (1THa, 1THb) of said two heating devices, by way of their outer sides, are situated adjacent and parallel in relation to one another.
  2. Cooking hob according to claim 1, characterized in that said respective first partial heating area (1THa, 1THb) of the two heating devices (11, 111) extends, by way of two of its outer sides, in each case to said outer edge (15) or to an inner side (16) of said outer edge (15) of said respective carrier (13) of this heating device and runs parallel in relation thereto, wherein in particular the first partial heating area (1THa, 1THb) is situated in a corner of said carrier (13).
  3. Cooking hob according to claim 1 or 2, characterized in that said respective first partial heating area (1THa, 1THb) of the two heating devices (11, 111) has a square shape, wherein in particular an outer side has a length between 110 mm and 150 mm.
  4. Cooking hob according to any of the preceding claims, characterized in that said respective second partial heating area (2THa, 2THb) of the two heating devices (11, 111) has the L shape with limbs having approximately equal width, in particular having limbs of different lengths.
  5. Cooking hob according to any of the preceding claims, characterized in that said respective carrier (13) of the two heating devices (11, 111) has a square shape.
  6. Cooking hob according to any of the preceding claims, characterized in that said respective first partial heating area (1THa, 1THb) of the two heating devices (11, 111) is square.
  7. Cooking hob according to any of the preceding claims, characterized in that a respective elongate temperature sensor (29) or temperature limiter of the two heating devices (11, 111) runs above said heating elements (19, 22) over at least said respective first partial heating area (1THa, 1THb) of the two heating devices (11, 111), preferably also partially over said respective second partial heating area (2THa, 2THb) of the two heating devices (11, 111).
  8. Cooking hob according to claim 7, characterized in that said respective elongate temperature sensor (29) or temperature limiter of the two heating devices (11, 111) runs from an outer edge (15) of said respective carrier (13) of the two heating devices (11, 111) over at least half an extent of said carrier in the direction of said temperature sensor (29) or said temperature limiter over at least said respective first partial heating area (1THa, 1THb), preferably up to the opposite outer edge (15) of said carrier (13).
  9. Cooking hob according to one of the claims 1 to 6, characterized in that a respective small or point-type temperature sensor of the two heating devices (11, 111) is arranged over at least said respective first partial heating area (1THa, 1THb) of the two heating devices (11, 111), wherein preferably a further point-type temperature sensor is arranged over said respective second partial heating area (2THa, 2THb) of the two heating devices (11, 111).
  10. Cooking hob according to any of the preceding claims, characterized in that said at least two heating devices (11, 111) are arranged next to one another at a short distance, preferably less than 2 cm, wherein in particular respectively the first partial heating areas (1THa, 1THb) of said two heating devices (11, 111), by way of their outer sides, are situated congruently or parallel next to one another over a same length in each case.
  11. Cooking hob according to any of the preceding claims, characterized in that said two heating devices (11, 111) which are arranged next to one another are in contact by way of their outer edges (15).
  12. Cooking hob according to any of the preceding claims, characterized in that said two heating devices (11, 111) which are arranged next to one another are formed with mirror-image symmetry, wherein a centre line (32) which runs centrally between said two heating devices forms an axis of mirror-image symmetry.
  13. Cooking hob according to any of the preceding claims, characterized in that further heating devices (35c, 35d) are provided which are of round or oval design.
  14. Cooking hob according to any of the preceding claims, characterized in that precisely two rectangular heating devices (11, 111) of identical size are arranged next to one another in a rear region of said cooking hob (35, 335), preferably at a distance between 2 cm and 10 cm to each other, wherein precisely two rectangular heating devices (11, 111) of identical size are arranged next to one another in a front region of said hob, wherein said two heating devices, by way of in each case said outer sides of their first partial heating areas (1THa, 1THb), are situated adjacent and parallel in relation to one another on at least a left-hand side or a right-hand side of said hob, wherein in particular said outer sides of their first partial areas (1THa, 1THb) are congruent or situated parallel next to one another over a same length in each case.
EP19185136.9A 2018-07-19 2019-07-09 Cooking hob Active EP3598848B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL19185136.9T PL3598848T5 (en) 2018-07-19 2019-07-09 Cooking hob and heating device for a cooking hob

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102018212094.3A DE102018212094A1 (en) 2018-07-19 2018-07-19 Heating device for a hob and hob

Publications (3)

Publication Number Publication Date
EP3598848A1 EP3598848A1 (en) 2020-01-22
EP3598848B1 EP3598848B1 (en) 2021-03-31
EP3598848B2 true EP3598848B2 (en) 2024-05-15

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US (1) US11156365B2 (en)
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DE (1) DE102018212094A1 (en)
ES (1) ES2875934T3 (en)
PL (1) PL3598848T5 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016224069A1 (en) * 2016-12-02 2018-06-07 E.G.O. Elektro-Gerätebau GmbH Cooking utensil with a cooking plate and a heater underneath
DE102021202613A1 (en) 2021-03-18 2022-09-22 E.G.O. Elektro-Gerätebau GmbH Heating device for a cooktop and cooktop

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Also Published As

Publication number Publication date
PL3598848T5 (en) 2024-09-16
US11156365B2 (en) 2021-10-26
EP3598848B1 (en) 2021-03-31
US20200025388A1 (en) 2020-01-23
PL3598848T3 (en) 2021-10-18
DE102018212094A1 (en) 2020-01-23
ES2875934T3 (en) 2021-11-11
EP3598848A1 (en) 2020-01-22

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