HOB EQUIPMENT

Description

[0001] The present invention relates to a cooktop device comprising at least one mounting device with at least one mounting surface for placing cookware, at least one heating device for heating cookware, and at least one support device for supporting at least one heating device. The support device is arranged at least partially below the mounting device, and at least one installation volume for accommodating at least one heating device is provided between the mounting device and the support device.

[0002] The cooking zones of modern cooktops, especially their size, design and distribution, are often individually planned and assembled to meet or satisfy the individual requirements and wishes of the customers.

[0003] Such individual design of modern cooktops requires a flexible and customer-oriented arrangement of different types, especially of different sizes and power levels, of heating elements beneath the intended cooking zones. For this purpose, during the installation or assembly of such a cooktop, the individual heating elements are typically first placed on a mounting plate and secured against slippage using one or more connecting elements.

[0004] Such connecting elements in modern cooktop installations must not only reliably prevent the heating elements from slipping, but they should also be designed to save space so that they do not collide with other components such as cables, generators, and control elements. Furthermore, they should preferably be easy to install, ideally requiring as few and quick steps as possible, and should not hinder or complicate subsequent installation steps, such as placing a support plate over the heating elements.

[0005] Connecting elements of known cooktop devices, such as those shown in German patent applications DE 10 2007 032 762 A1 and DE 20 2009 000 990 U1, generally do not meet these requirements or only partially do so. In particular, German patent application EP 2 784 396 A1 discloses connecting elements that are manufactured in one piece from the support device.

[0006] A cooktop device of this type is disclosed in publication CN 106 642 233 B.

[0007] Furthermore, cooktop devices with induction coils are known from EP 3 792 554 A1 and DE 10 2013 211 300 A1. It is therefore the object of the present invention to provide a cooktop device which enables particularly simple, reliable and, in particular, time-saving installation of heating devices.

[0008] This problem is solved by the cooktop device with the features of claim 1. Preferred embodiments of the invention are the subject of the dependent claims. Further advantages and features of the invention will become apparent from the exemplary embodiments.

[0009] The cooktop device according to the invention comprises at least one mounting device with at least one mounting surface for placing cookware, at least one heating device for heating cookware, and at least one support device for supporting at least one heating device, wherein the support device is arranged at least partially below the mounting device. At least one installation volume for accommodating at least one heating device is provided between the mounting device and the support device. The support device has at least one mounting device formed in one piece from the support device, with at least one fastening element that holds the heating device. The fastening element of the mounting device is formed in one piece from the support device by at least one cutting process and / or at least one forming process.

[0010] Preferably, the fastening device is suitable and designed with at least one fastening element to hold the heating device.

[0011] The cooktop is preferably an induction cooktop, which is particularly suitable and designed for installation in a kitchen unit and / or a kitchen island. A fully integrated cooktop design is also preferred.

[0012] Preferably, the cooktop unit is installed in a kitchen unit and / or a kitchen island. In particular, the cooktop unit is recessed and / or integrated into a worktop of a kitchen unit and / or a kitchen island.

[0013] It is particularly preferred that the cooktop unit is largely flush or flush with the surface of a worktop in a kitchen unit or a kitchen island and / or integrated, so that the installation surface of the unit and the surface of the worktop are largely in the same plane.

[0014] In advantageous further developments, the cooktop device comprises at least one control device for controlling the cooktop device, at least one operating device for operating the cooktop device, at least one generator for supplying energy to the heating device, and in particular further components for operating the cooktop device, such as cables and / or electrical connections.

[0015] The mounting device is preferably a mounting plate, which is made of or comprises a glass ceramic and / or another suitable material.

[0016] Preferably, the support structure is made of a metal sheet, such as a sheet of aluminum alloy, steel, and / or another metal alloy. However, it can also preferably be made of plastic and / or another suitable material if the material properties meet the required specifications.

[0017] Preferably, the support structure is designed and configured to support and / or fix the mounting device. In particular, the support structure is connected to the mounting device by means of at least one clamping, screwing, plugging, and / or adhesive connection. However, the connection between the support structure and the mounting device can preferably also be implemented or designed in another way.

[0018] In advantageous further developments, the at least one generator, the at least one control unit, and / or the at least one operating unit are arranged and / or fixed on the support structure. Preferably, the support structure carries further components such as cables and / or electrical connections.

[0019] Preferably, the installation volume between the mounting device and the support device also includes volume components for installing at least one generator, at least one control device, and / or at least one operating device. Volume components for installing further components for operating the cooktop, such as cables and / or electrical connections, are also preferably included.

[0020] The cooktop device according to the invention offers many advantages. A significant advantage is that the support structure of the cooktop device according to the invention has at least one fastening device manufactured in one piece from the support structure, with at least one fastening element which holds the heating element.

[0021] The one-piece manufacturing of the mounting device from the support structure provides a cooktop unit with a particularly robust and reliable mounting system for holding heating elements on a support structure. In particular, a one-piece mounting device is significantly more robust against vibrations and / or impacts that typically occur during installation and / or maintenance work than conventional connecting elements. This largely prevents the heating elements from slipping.

[0022] Furthermore, the one-piece manufacturing of the mounting device eliminates the need for an additional component, such as a connecting element, to join the heating unit to the support structure. This can reduce or even eliminate costs.

[0023] Furthermore, the assembly of the cooktop unit is significantly simplified and, in particular, made more time-efficient, since the heating element is largely simply placed or plugged onto the one-piece mounting bracket. The one-piece design of the cooktop unit according to the invention completely eliminates the possibility of separate connecting elements falling out or getting caught, especially in small gaps within the support structure. Moreover, compared to known connecting components, the arrangement of the heating elements on a support plate offers considerably higher reliability and accuracy.

[0024] The cooktop assembly according to the invention can, in particular, have several fastening devices and thus enables a flexible arrangement and fastening of heating elements on the support structure. Furthermore, the one-piece manufactured fastening elements are of a particularly space-saving design, so that a collision with other components of the cooktop assembly according to the invention arranged on the support structure is largely avoided.

[0025] According to the invention, the at least one heating device comprises at least one induction coil and at least one holding element.

[0026] Preferably, at least one heating device is an induction device.

[0027] In preferred embodiments, the at least one heating device comprises, in addition to the at least one induction coil and the at least one holding element, further components for operating the heating device, in particular for controlling and / or supplying power to the induction coil, such as cables and / or electrical connections. The heating device may also include at least one control device for controlling the heating device, at least one operating device for operating the heating device, and / or at least one generator for power supply.

[0028] In appropriate further training, at least one holding element is suitable and designed to accommodate at least one induction coil.

[0029] Preferably, the induction coil is mounted on the holding element. However, the holding element can also accommodate other components, parts, or assemblies, such as a generator, a control unit, an operating device, and / or cables.

[0030] Preferably, the at least one retaining element is made of a metal sheet and / or a plastic plate. However, it can also consist of, or be formed from, another suitable material or a suitable combination of materials.

[0031] According to the invention, the at least one retaining element has at least one recess.

[0032] According to the invention, at least one retaining element has at least one recess which is suitable and designed to receive or be placed onto the at least one fastening element of the fastening device.

[0033] In particular, the at least one recess is suitable and designed to accommodate the at least one fastening element of the fastening device, so that the heating device is largely held in its position, in particular in its position parallel to the installation surface.

[0034] Preferably, the at least one retaining element has several, in particular two, preferably three, preferably four and particularly preferably five or more recesses.

[0035] Preferably, the at least one retaining element has several symmetrically and / or periodically arranged recesses.

[0036] In preferred further developments, at least one retaining element has at least two recesses which are suitable and designed to each accommodate at least one fastening device or to be placed onto a fastening device.

[0037] Particularly preferably, at least one fastening element of the fastening device is suitable and designed to be inserted, at least partially, into the recess of the retaining element. "Inserting" here refers to, in particular, partial insertion and / or passing through, or section by section, into the recess.

[0038] Preferably, the at least one fastening element of the fastening device is suitable and designed to be inserted at least partially into the recess of the retaining element, so that the fastening element is largely free or without contact in the recess at least partially.

[0039] Preferably, the at least one fastening element of the fastening device is suitable and designed to be inserted at least partially into the recess of the retaining element, so that the fastening element is in contact with the recess at least partially and / or is clamped in the recess at least partially.

[0040] In preferred further training, at least one fastening device holds at least one heating device reversibly or removable.

[0041] Preferably, the at least one fastening element can be inserted into the recess of the retaining element and / or removed any number of times, at least partially or in sections.

[0042] Particularly preferably, at least one fastening element of the fastening device holds the heating device essentially in its position parallel to the installation surface.

[0043] Preferably, the fastening device holds the heating device largely in its position parallel to the installation surface, so that the heating device is movable parallel to the installation surface preferably by less than 3 mm, preferably by less than 2 mm, particularly preferably by less than 1 mm and most preferably by less than 0.5 mm.

[0044] Preferably, at least one fastening element of the fastening device allows movement of the heating device in the direction of the installation surface and / or in the direction of the support device.

[0045] In this context, a movement of the heating device in the direction of the support device is in particular a movement by which the heating device is moved downwards or the heating device approaches the support device.

[0046] In this context, a movement of the heating device towards the installation surface is in particular a movement by which the heating device is moved upwards or the heating device is moved towards the installation surface and / or away from the support device.

[0047] Preferably, the fastening device is suitable and designed to allow movement of the heating device, in particular in the direction of the installation surface and / or in the direction of the support device, when the installation device is fastened to the support device.

[0048] In appropriate further training, the fastening device is suitable and designed to allow movement of the heating device, in particular in the direction of the installation surface and / or in the direction of the support device, when the installation device is detached from the support device.

[0049] Preferably, the fastening device allows movement of the heating device in the direction of the installation surface and / or in the direction of the support device, in particular when fastening and / or loosening the installation device by less than 40 mm, in particular less than 30 mm, preferably less than 20 mm, particularly preferably less than 10 mm, most preferably less than 5 mm, in particular less than 1 mm and at least 0.5 mm.

[0050] In preferred further training systems, at least one preloading device is provided between the at least one installation device and the at least one heating device.

[0051] Preferably, the preloading device comprises at least one spring or a similarly suitable element.

[0052] Preferably, the preloading device enables at least a partially or sectionally spring-loaded movement of the heating device between the support device and the installation device.

[0053] In appropriate further developments, the preloading device enables at least a partially or section-by-section spring-loaded movement of the heating device towards the support device and / or away from the support device, wherein in particular the recess of the retaining element is guided at least section-by-section over the fastening element of the fastening device.

[0054] Particularly preferred is the at least one fastening element of the fastening device formed in one piece from the support device by at least one separation process and / or at least one forming process.

[0055] A separation process is, in particular, a punching, sawing, cutting, milling, drilling and / or shearing process.

[0056] A forming process is, in particular, a bending, pressing, and / or deep-drawing process. Other processes may also be particularly suitable.

[0057] Preferably, the at least one fastening element of the fastening device is formed in one piece from the support device by punching a predetermined separation into the support device or punching out a predetermined separation from the support device and / or bending a section of the support device or bending the support device in the area of ​​the separation.

[0058] The fastening elements of the fastening devices can be manufactured in particular by a cutting process or a stamping process or the like, and can be positioned or bent at the required locations as needed.

[0059] According to the invention, the at least one fastening device comprises at least two fastening elements.

[0060] Preferably, the fastening device has more than two, in particular three, preferably four, more preferably five, more preferably six or even more fastening elements.

[0061] According to the invention, the at least two fastening elements are formed in one piece from the carrier device by at least one separation process.

[0062] In preferred further developments, at least two fastening elements hold the heating device largely in its position parallel to the installation surface.

[0063] Preferably, at least two fastening elements hold the heating device largely in its position parallel to the mounting surface on the support device.

[0064] Preferably, the at least two fastening elements hold the heating device reversibly / removably.

[0065] Preferably, the at least two fastening elements allow movement of the heating device in the direction of the installation surface and / or in the direction of the support device.

[0066] Particularly preferred are the at least two fastening elements formed in one piece from the carrier device by at least one S-shaped separation in a separation process.

[0067] In this context, a separation is in particular at least one line or contour along which a limited area or section of the carrier device is partially / sectionally separated or cut apart in a separation process.

[0068] Preferably, the separation can also take other forms and / or, in particular, include a separation, i.e., the removal of material from the carrier device.

[0069] In advantageous further developments, the lateral dimensions of the S-shaped separation largely correspond to the lateral dimensions of the recess of the retaining element.

[0070] Preferably, the at least two fastening elements are aligned largely towards the installation surface by means of a forming process.

[0071] In this context, an orientation or position of the fastening elements towards the installation surface is in particular such an orientation or position in which the fastening elements, preferably their respective free ends, are aligned towards the position of the installation surface provided in the assembled state of the hob unit or during the operation of the hob unit.

[0072] A forming process is in particular a bending, pressing, and / or deep drawing process and / or similar.

[0073] Preferably, the at least two fastening elements are aligned largely orthogonally to the installation surface by means of at least one forming process.

[0074] In appropriate further training, at least two fastening elements are largely aligned towards the installation surface by means of a bending process.

[0075] Particularly preferred is the distance between the bases of the at least two fastening elements greater than the distance between the free ends of the at least two fastening elements.

[0076] In this context, the base of a fastening element is in particular the part of a fastening element which is connected to the support device.

[0077] A free end of a fastening element is in particular the tip of a fastening element or the part and / or section of a fastening element which extends furthest from the support device in the direction of the installation surface, and is thus closest to the installation surface.

[0078] Preferably, the distance between at least two fastening elements decreases from their bases towards their free ends.

[0079] In advantageous advanced training programs, the support structure includes several fastening devices.

[0080] Preferably, the support structure comprises several periodically arranged fastening devices.

[0081] Preferably, the multiple fastening devices are arranged such that at least two fastening devices hold at least one heating device.

[0082] Particularly preferred are the multiple fastening devices arranged such that they hold the at least one heating device in different lateral positions. Lateral positions are, in particular, positions on the support structure parallel to the installation surface.

[0083] In suitable further developments, the multiple fastening devices are arranged such that at least two fastening devices hold at least one heating device in different orientations parallel to the installation surface. In this context, "different orientations" refers in particular to different orientations of the heating device, which are achieved by rotations about an axis of rotation orthogonal to the installation surface.

[0084] Further advantages and features of the present invention will become apparent from the exemplary embodiments, which are explained below with reference to the accompanying figures.

[0085] The figures show: Figure 1 is a purely schematic representation of a kitchen unit with an embodiment of a cooktop device according to the invention in a perspective view; Figure 2 is a purely schematic representation of a connecting element known from the prior art for connecting a support device to a heating device of known cooktop devices; Figure 3 is a purely schematic representation of an embodiment of a cooktop device according to the invention comprising a support device with a fastening device and a heating device in a sectional view from the side lying in different planes; Figure 4 is another purely schematic representation of an embodiment of a cooktop device according to the invention comprising a support device with a fastening device and a heating device in a sectional view from the side lying in different planes;Figure 5 is a purely schematic representation of a heating device with an induction coil and a holding element on a support device with a fastening element of an embodiment of a cooktop device according to the invention, in a top view; Figure 6 is a purely schematic representation of a partition in a top view; and Figure 7 is a purely schematic representation of a support device with a fastening element, which holds four heating devices, in a top view.

[0086] In Figure 1Figure 1 is a purely schematic embodiment of a cooktop device 1 according to the invention, shown in a perspective view. Here, the cooktop device 1 comprises a mounting device 20 with a mounting surface 21 for placing cookware 30, a control device 17, and a heating element 40, which is housed below the mounting device 20 in a recess 60 and supported by a support device 50. The cooktop device 1 is integrated or recessed into a worktop 101 of a kitchen unit 100, such that the surface of the worktop 101 and the mounting surface 21 of the mounting device 20 are largely in the same plane.

[0087] In Figure 2The diagram schematically illustrates the mounting of a heating element 40 on a support structure 50, based on the prior art. In known cooktop devices 1, as shown here in a sectional view from the side in different planes, a heating element 40 is typically connected to a support structure 50 via at least one connecting element 200. Such a known connecting element 200 is designed as a separate or additional component.

[0088] As schematically indicated here, such a connecting element 200 is guided both through a recess 43 of a retaining element 42 of the heating device 40 and through a recess in the support device 50 and, after a rotation about its longitudinal axis, hooks the heating device 40 or its retaining element 42 together with the support device 50 in such a way that the heating device is largely held in its lateral position on the support device.

[0089] Although in known cooktop assemblies 1, as shown here, the heating element 1 is held on the support structure 50 by the known connecting element 200, the assembly or connection of the heating element 40 to the support structure 50 requires several work steps or movements and is therefore not only time-consuming but also very prone to errors. For example, the connecting elements 200, which are designed separately as individual components, can easily fall and / or slip into the installation volume during assembly, from which they are difficult to remove. Furthermore, vibrations and impacts sometimes cause the connecting element 200 to slip or even come loose, thus leading to the heating element 40 sliding on the support structure 50.

[0090] In Figure 3A purely schematic embodiment of a cooktop device 1 according to the invention, comprising a support device 50 with fastening device 51 and a heating device 40 with an induction coil 41 and a holding element 42, is shown in a sectional view from the side lying in different planes.

[0091] The fastening device 51 here comprises two fastening elements 52a, 52b formed in one piece from the support device 50, which here are largely oriented upwards, i.e. in the direction of the position of the mounting device 20 provided in the assembled state or during operation of the cooktop device 1 according to the invention.

[0092] The two fastening elements 52a, 52b of the fastening device 51 are guided here, section by section or partially, through the recess 43 provided for this purpose in the retaining element 42 of the heating device 40. Thus, the fastening device 51 shown here, with the two fastening elements 52a, 52b, largely holds the heating device 40 in its lateral position parallel to the support device, or largely prevents lateral movement such as slippage of the heating device 40 on the support device 50.

[0093] The recess of the retaining element is partially or partially inserted onto the two fastening elements 52a, 52b of the fastening device 51. Movement of the heating element 40 towards the position of the mounting device 20 provided in the assembled state or during operation of the cooktop device 1 according to the invention, and movement of the heating element 40 towards the support device 50, is possible. Thus, assembly or placement and / or disassembly or removal of the heating element 40 from the support device 50 is possible as often as desired.

[0094] In the embodiment shown here, the distance between the two fastening elements 52a, 52b decreases from their bases 54a, 54b towards their free ends 55a, 55b, i.e., the distance between the free ends 55a, 55b of the fastening elements 52a, 52b is less than the distance between the bases 54a, 54b of the fastening elements 52a, 52b. Such a design of the fastening device 51 enables a particularly simple and reliable placement of the recess 43 of the heating device 40 onto the two fastening elements 52a, 52b of the fastening device 51 and also reliably holds the heating device 40 in its lateral position on the support device 50, i.e., it largely prevents lateral movement of the heating device 40. Thus, a particularly simple and time-saving assembly of the heating device 40 onto the support device 51 is possible without additional individual components, as is known from the prior art.

[0095] In Figure 4 A further embodiment of a cooktop device 1 according to the invention, comprising a support device 50 with fastening device 51 and heating device 40, is shown in a purely schematic sectional view from the side, lying in different planes.

[0096] As in Figure 3 also includes the in Figure 4 The illustrated cooktop device 1 according to the invention comprises a support device 50 with a fastening device 51 shown here, which includes two fastening elements 52a, 52b aligned towards the mounting device 20, and a heating device 40 with an induction coil 41 and with a retaining element 42. In the embodiment shown here, however, the mounting device 20 with mounting surface 21 is positioned above the support device 50 and above the heating device 40 which is received by the installation volume 60.

[0097] By positioning the mounting device 20 above the support device 50 and above or on the heating device 40, the heating device 40 is pressed towards the support device 50. Thus, in comparison to the Figure 3 In the illustrated embodiment, the recess 43 of the retaining element 42 is further guided over the two fastening elements 52a, 52b of the fastening device 51, or the recess 43 and the fastening device 51 are further joined together, so that here the retaining element 42 of the heating device 40 is largely in contact with the surface of the support device 50, or the recess 43 of the retaining element 42 is largely in contact and / or in the immediate vicinity of the bases 54a, 54b of the fastening elements 52a, 52b.

[0098] During the assembly of a mounting device 20 of a cooktop device 1 according to the invention, as shown here, in which the mounting device 20 is positioned above the support device 50 and pressed downwards, a counterforce, i.e. a force acting upwards in the direction of the mounting surface, is exerted by a preloading device which is arranged between the mounting device (20) and the heating device 40.

[0099] The fastening device 51 guides the heating element 40 to the position intended for the heating element 40 during the assembly of the mounting device 20. That is, the fastening device 51 largely prevents lateral slippage or lateral movement of the heating element 40 parallel to the mounting surface 21. A fastening device 51 and a recess 43 of a holding device 42 are, as shown in Figure 3shown, already assembled or plugged into each other section by section before the installation device 20.

[0100] In Figure 5 The figure shown is a purely schematic embodiment of a heating device 40 of the cooktop device 1 according to the invention on a support device 50 with fastening device 51 in a top view.

[0101] The cooktop assembly 40 comprises an induction coil 41, a mounting element 42, and several cables and electrical connections. The induction coil 41 is held by a mounting element 42 with four largely rectangular recesses 43. The recesses 43 are arranged largely symmetrically at two corners of the mounting element 42.

[0102] In the embodiment shown here, two of the four recesses 43 are each placed onto a mounting device 51 with two fastening elements 52a, 52b, whereby the mounting device 51 largely holds or fixes the heating device 40 in its lateral position. Thus, the mounting device 51 largely prevents lateral movement of the heating device 40. However, movement of the heating device 40 towards the mounting plate 20 and / or towards the support plate 50 is possible in the embodiment shown here, so that the heating device 40 can be removed and / or mounted from the support device as often as desired and without much effort, i.e., in a single step.

[0103] In Figure 6The figure shows a purely schematic embodiment of a separation 53 in a section of a support structure 50 of the cooktop device 1 according to the invention in a top view. A fastening device 51 with two fastening elements 52a, 52b is formed in one piece from the support structure 50 by a forming process from the separation 53 shown here.

[0104] The separation 53 is a cutout formed by punching out material from a section of the support device 50 in a punching process. In the embodiment shown here, the separation 53 is largely S-shaped. However, depending on the task and design of the fastening device 51, it can also have a different shape or contour.

[0105] The two fastening elements 52a and 52b formed here by the separation 53 in the separation process can subsequently be aligned, if necessary, by means of a bending process, out of the plane of the support device 50 into a position largely directed towards the mounting device 21, i.e., protruding from the plane of the drawing. The sections provided for such a bending process are indicated schematically here by dashed lines. The sections marked here for bending form the bases 54a and 54b of the two fastening elements 52a and 52b of the mounting device 51.

[0106] In Figure 7The figure shown is a purely schematic embodiment of a support structure 50 of a cooktop device 1 according to the invention, shown in a top view. The support structure 50 carries four heating elements 40, which are arranged at different lateral positions on the support structure 50 and are each held by means of two mounting elements 51 formed integrally with the support structure 50. Furthermore, other assemblies or components, such as cables and electrical connections, are arranged on and / or held by the support structure 50.

[0107] The illustration indicates possible different orientations for the heating device 40 located in the lower right corner of the support device 50, with two different orientations or rotations of the heating device being shown here.

[0108] The heating devices 40 each comprise a holding element 42 with four recesses 43 and an induction coil 41, which is mounted on the holding element 42. The heating devices 40 are connected to each other and to the generators and the control unit via several cables 70 and electrical connections.

[0109] The support structure shown schematically in this embodiment comprises a plurality of fastening devices 51, so that the heating devices 40 can be flexibly arranged and held on the support structure 50, i.e. in different lateral positions and in different orientations.

[0110] The fastening elements 52 of the support device 51 can be bent upwards at the appropriate point if necessary to attach a heating device 40 to the desired position. Reference symbol list

[0111] 1 Cooktop assembly 20 Installation assembly 21 Installation area 30 Cookware 40 Heating element 41 Induction coil 42 Holding element 43 Recess 50 Support assembly 51 Fastening device 52 Fastening element 52a Fastening element 52b Fastening element 53 Separation 54a Base 54b Base 55a Free end 55b Free end 60 Installation volume 70 Cable 100 Kitchen unit 101 Worktop 200 connecting element

Claims

1. Hob device (1) comprising at least one placement device (20) having at least one placement surface (21) for placement of cooking utensils (30), at least one heating device (40) for heating cooking utensils (30) and at least one support device (50) for supporting the at least one heating device (40), wherein the support device (50) is arranged below the placement device (20), at least in portions, and wherein at least one installation space (60) for receiving at least one heating device (40) is provided between the placement device (20) and the support device (50), wherein the support device (50) has at least one fastening device (51) which is formed in a single piece therefrom and has at least one fastening element which holds the heating device (40), wherein the at least one fastening element (52) of the fastening device (51) is formed in a single piece from the support device (50) by at least one separation process and in particular by at least one deformation process, wherein the at least one heating device (40) comprises at least one induction coil (41) and at least one retaining element (42), wherein the at least one retaining element (42) has at least one recess (43), wherein the at least one fastening element (52) of the fastening device (51) is suitable and designed to be inserted at least partially into the recess (43) of the retaining element (42), characterised in that the at least one fastening device (51) comprises at least two fastening elements (52a, 52b), wherein the two fastening elements (52a, 52b) are formed in a single piece from the support device (50).

2. Hob device (1) according to any of the preceding claims, characterised in that the fastening device (51) holds the at least one heating device (40) in a reversible and / or removable manner.

3. Hob device (1) according to any of the preceding claims, characterised in that the at least one fastening element (52) of the fastening device (51) holds the heating device (40) substantially in its position parallel to the placement surface (21).

4. Hob device (1) according to any of the preceding claims, characterised in that the at least one fastening element (52) of the fastening device (51) allows movement of the heating device (40) in the direction of the placement surface (21) and / or in the direction of the support device (5).

5. Hob device (1) according to any of the preceding claims, characterised in that at least one preloading device is provided between the placement device (20) and the heating device (40).

6. Hob device (1) according to the preceding claim, characterised in that the at least two fastening elements (52a, 52b) are formed in a single piece from the support device (50) by at least one S-shaped separation (53) in a separation process.

7. Hob device (1) according to either of the two preceding claims, characterised in that the at least two fastening elements (52a, 52b) are largely orientated towards the placement surface (21) by means of a deformation process.

8. Hob device (1) according to any of the three preceding claims, characterised in that the distance between the bases (54a, 54b) of the at least two fastening elements (52a, 52b) is greater than the distance between the free ends (55a, 55b) of the at least two fastening elements (52a, 52b).

9. Hob device (1) according to any of the preceding claims, characterised in that the support device (50) comprises a plurality of fastening devices (51), wherein the fastening devices (51) are arranged such that at least two fastening devices (51) hold at least one heating device (40).