Hob system, hob device, and method for installing a hob system

Abstract

The invention relates to a hob system (10) comprising a hob device (12) which has an outer hob component (14) and an inner hob component (16) and comprising a securing device (20) which is designed to fix to the lower face of a kitchen countertop (30) and has a securing unit (18) for mounting at least the hob device (12). The inner hob component (16) is mounted in the outer hob component (14) in an at least partly movable manner.

Description

[0001] Hob system, hob device and method for installing a hob system

[0002] State of the art

[0003] The invention relates to a hob system according to claim 1, a hob device according to claim 14 and a method for installing a hob system according to claim 15.

[0004] A mounting system for securing a hob in a recess of a kitchen worktop is already known from the prior art. A support rail is arranged on each of two opposite sides of the recess, specifically on the sides of the kitchen worktop facing the recess, with which the hob is locked in the recess when installed. Furthermore, it is also known to screw the hob directly to the underside of the kitchen worktop.

[0005] The object of the invention is, in particular but not limited to, to provide a generic device with improved properties in terms of efficiency. This object is achieved according to the invention by the features of claims 1, 14, and 15, while advantageous embodiments and further developments of the invention can be found in the subclaims.

[0006] Advantages of the invention

[0007] A hob system is proposed, comprising a hob device, in particular an induction hob device, which has an outer hob component and an inner hob component, and comprising a fastening device which is provided for fixing to an underside of a kitchen worktop and which has a fastening unit for holding at least the hob device, wherein the inner hob component is mounted at least partially movably in the outer hob component.

[0008] Such a design makes it possible to increase efficiency, specifically with regard to holding at least one hob device on the underside of a kitchen worktop. This makes it possible to improve the design. Furthermore, efficiency can be increased, for example with regard to product efficiency, work efficiency, assembly efficiency, disassembly efficiency, manufacturing efficiency, and / or cost efficiency. By means of such a fastening device, which is provided for fixing at least the hob device to the underside of the kitchen worktop, the fastening can be improved and simplified, and safety can be increased, while avoiding additional and complex fastening units that differ from the proposed fastening device, such as drilling and / or screwing devices for screwing at least the hob device to the underside of the kitchen worktop.Furthermore, the weight of at least the hob device can be advantageously distributed over a large area beneath the kitchen worktop, thus avoiding local stresses in the kitchen worktop. Furthermore, recesses in the kitchen worktop for inserting at least the hob device can be omitted. This allows for a high level of operating convenience, for example, through advantageous use of the kitchen worktop when the hob device is not in operation, and in particular, an advantageous appearance of the hob system. Furthermore, due to the mounting on the underside of the kitchen worktop, damage, for example, scratching, to the top surface of the kitchen worktop can be avoided.Furthermore, at least the hob device can preferably be held beneath the kitchen worktop, regardless of the material thickness and / or material properties of the kitchen worktop. This ensures high functionality and usability. Furthermore, assembly and / or disassembly costs can be reduced. Furthermore, the outer and inner hob components, with the inner hob component being at least partially movably mounted in the outer hob component, enable a high degree of flexibility of the hob device, in particular with regard to the alignment of the hob device during assembly. By means of such a configuration, high assembly efficiency can be provided through simple and particularly precise alignment of the hob device.

[0009] The hob device could be designed as a resistance hob device and / or preferably as an induction hob device. A "hob device" is to be understood as at least a part, in particular a subassembly, of at least one hob, advantageously an induction hob, wherein, in particular, accessory units for the hob can also be included, such as, for example, a sensor unit for measuring the temperature of a cooking utensil and / or a food item. It would also be conceivable for the hob device to comprise the entire hob. The hob device and / or the hob are / is intended for use and / or arrangement in a household, in particular a kitchen. The hob is preferably a matrix hob.It would be conceivable for the hob to have additional hob devices in addition to the hob device, specifically at least one additional hob device, which together form the hob. However, other designs of the hob device that would be deemed appropriate by a person skilled in the art are also conceivable.

[0010] The hob device is in turn part of the hob system, in particular an induction hob system. The hob system comprises at least the hob device and the fastening device, wherein the hob system could comprise a plurality of further units and / or devices that can be used for preparing and / or processing food. For example, the hob system could comprise at least one hob object, which could in particular be a subassembly of at least the hob. The hob object could, for example, comprise at least one control unit and / or at least one user interface and / or at least one housing unit and / or at least one heating unit and / or at least one extractor fan unit and / or at least one heating unit control electronics.For example, the cooktop system could additionally comprise at least one extraction unit and / or at least the sensor unit and / or further sensor units, in particular at least one temperature sensor, which could be provided for placement in the cooking utensil and / or in the food being cooked, for example in the form of a roasting spit. In particular, the cooktop is part of the cooktop system. It would also be conceivable for the cooktop system to comprise several, specifically at least two, cooktops.

[0011] The kitchen worktop is at least one, in particular plate-like, unit, which is provided for the installation of at least one installation unit and / or for the placement of at least one food item, in particular the food to be cooked. In a preferred embodiment, the kitchen worktop has a thickness, in particular a material thickness, of in particular at most 30 mm, preferably of at most 20 mm, and particularly preferably of at most 12 mm. In particular, the kitchen worktop differs from a hob plate, and more specifically preferably from a hob plate made of glass ceramic. Preferably, the kitchen worktop, in particular in contrast to the hob plate, is additionally provided to provide a food preparation area, in particular in that, for example, cutting and / or mixing and / or mashing and / or peeling of food items could be carried out.The fact that an object is designed in a "plate-like" manner should also be understood to mean a spatial object which, viewed in a plane, has a preferably non-circular cross-sectional area in a cross-section perpendicular to the plane and, in particular, has an at least substantially constant material thickness perpendicular to the plane. The "plate-like element" should be understood here as an element which has a material thickness which corresponds to a maximum of 50%, in particular a maximum of 20%, advantageously a maximum of 10%, preferably a maximum of 5%, of a length and / or a width of the element. The plate-like element preferably has at least one, preferably at least two, in particular opposite, sides which have a flat, in particular smooth, surface.

[0012] In particular, the kitchen worktop is a piece of furniture, preferably a piece of kitchen furniture. The kitchen worktop is advantageously part of the kitchen and, in particular, delimits and / or closes off part of an assembly of kitchen cabinets and / or kitchen furniture and / or other household appliances, such as a dishwasher and / or a washing machine and / or an oven, at the top. It would also be conceivable for the kitchen worktop to be, for example, a kitchen worktop in a commercial kitchen and / or an outdoor cooking area. The kitchen worktop is preferably made of a non-metallic material.The kitchen worktop could be made at least partially or at least largely from glass and / or Neolith and / or Dekton and / or wood and / or marble and / or stone, in particular natural stone, and / or laminate and / or plastic and / or ceramic and / or a composite material. The expression "largely" should be understood to mean at least 55%, advantageously at least 65%, preferably at least 75%, particularly preferably at least 85%, and particularly advantageously at most 95% of a volume and / or mass fraction. In this document, position designations such as "below" or "above" refer to an installed state of the kitchen worktop, unless explicitly stated otherwise. It would be conceivable for the kitchen worktop to have engravings and / or prints, in particular for marking at least one heating zone for heating the installation unit.However, the kitchen worktop is preferably free of engravings and / or prints.

[0013] The kitchen worktop preferably has an opening. The opening in the kitchen worktop preferably extends at least partially along a normal direction from a top side to the bottom side of the kitchen worktop and can be introduced into the kitchen worktop by a suitable shaping process, either directly during production of the kitchen worktop, for example, using a suitable casting mold, or subsequently, for example, by a drilling process or a milling process or the like. The opening is preferably formed as a bore in the kitchen worktop. The opening could have a diameter of at least 1 mm, advantageously at least 5 mm, preferably at least 1 cm, and particularly preferably at most 2 cm.Preferably, the opening is provided at least to enable a particularly low-loss transmission of infrared radiation and / or visible light to and / or from at least one unit, in particular a lighting unit, from an area below the kitchen worktop to an area above the kitchen worktop. A heating zone for heating the installation unit could be indicated to an operator by means of the lighting unit.

[0014] A "normal direction" of an object is defined as a direction perpendicular to the object's main extension plane. A "main extension plane" of a structural unit is defined as a plane parallel to the largest side surface of the smallest imaginary cuboid that just completely encloses the structural unit, and in particular, a plane that passes through the center of the cuboid.

[0015] At least one radiation-guiding element of the cooktop device could be arranged in the opening in an assembled state. A "radiation-guiding element" is to be understood as an element that is permeable both to infrared radiation, in particular infrared radiation with a wavelength range between 800 nm and 7,000 nm, and to visible light with a wavelength range between 380 nm and 800 nm, and that is intended to transmit visible light and / or infrared radiation at least partially along the normal direction of the kitchen worktop, from the top side to the underside of the kitchen worktop and / or from the underside to the top side of the kitchen worktop. Preferably, the radiation-guiding element is formed at least largely, particularly preferably entirely, from quartz. Preferably, the opening is free of elements and / or units, in particular the radiation-guiding element.This allows for particularly efficient transmission of visible and / or infrared radiation.

[0016] The installation unit can comprise a small household appliance and / or the cooking utensil. The small household appliance could, for example, be a coffee maker and / or a toaster and / or a kettle and / or a blender and / or a stirrer. Advantageously, the small household appliance could be supplied with energy at least partially inductively when placed on a installation plate. The cooking utensil can, for example, be in the form of a pot and / or pan and / or a roasting pan. If the hob device is designed as an induction hob device, the cooking utensil could be supplied with energy at least partially inductively when placed on the kitchen worktop, at least for heating. It would also be conceivable for the installation unit to comprise a base unit which is provided as a base under the cooking utensil and / or the small household appliance. The base unit can advantageously be arranged between the kitchen worktop and the cooking utensil and / or the small household appliance.In particular, the installation unit can be arranged in a cooking surface area on the kitchen worktop.

[0017] The hob device could have at least one heating unit, which could be designed as a resistance heating unit and / or preferably as an induction heating unit. The heating unit is advantageously provided for heating at least the installation unit in the cooking surface area on the kitchen worktop. In particular, the opening is arranged in the cooking surface area on the kitchen worktop. The opening could indicate at least one heating zone in the cooking surface area to the operator. Preferably, the cooking surface area is designed as a variable cooking surface area. A "variable cooking surface area" should be understood to mean a cooking surface area that is provided to form at least one heating zone adapted to at least the installed installation unit, in particular the small household appliance and / or the cooking utensil. The heating zone can preferably be adapted to the installation unit with regard to at least one size and / or shape.The variable cooking surface area differs advantageously from a cooking surface where heating zones are fixed, particularly by markings on the kitchen worktop.

[0018] In particular, the heating unit is arranged beneath the kitchen worktop. The heating unit is preferably designed as a matrix heating unit and is particularly intended to provide the variable cooking surface area. In particular, the heating unit has at least one heating element and preferably a plurality of heating elements. A "heating unit" is to be understood as a unit that is intended, at least in one operating state, to transfer at least a large portion of electrical energy to the installation unit, preferably through at least the kitchen worktop, and / or to convert electrical energy into heat, in order in particular to heat at least the installed installation unit, preferably through at least the installation plate.In particular, the heating unit is intended to transmit a power of at least 100 W, in particular at least 500 W, advantageously at least 1000 W, preferably at least 2000 W in at least one operating state in which the heating unit is connected to the supply electronics of the hob device or the hob. If the heating unit is designed as an induction heating unit, the induction heating unit can have at least one heating element designed as an inductor. An “inductor” is understood here to mean an element which has at least one induction coil and / or is designed as an induction coil and which is intended to supply energy, in particular in the form of an alternating magnetic field, to at least one receiving element, in particular at least the installation unit, in at least one operating state.The receiving element could be designed as a metallic heating means, in particular as an at least partially ferromagnetic heating means, for example as a ferromagnetic base of the installation unit, in particular of the cooking utensil and / or the support unit and / or of the small household appliance, in which, in an operating mode of the heating unit, eddy currents and / or remagnetization effects are induced by the inductor, which are converted into heat. The fastening device is preferably provided to fix and / or hold at least the hob device to the underside of the kitchen worktop. Preferably, the fastening device holds and / or fixes at least the hob device, at least in the mounted state, to the underside of the kitchen worktop. Furthermore, the fastening device is preferably designed separately from the hob device and the kitchen worktop.The fastening device has at least the fastening unit for holding at least the hob device. The fastening unit can hold the hob device directly or indirectly. Preferably, the fastening device has at least one further unit, in particular for fixing the fastening unit to the kitchen worktop. It would be conceivable for the fastening unit to be provided for fixing to the underside of the kitchen worktop by means of at least screw and / or snap-in connections or a similar type of connection that would appear appropriate to a person skilled in the art. Preferably, however, the fixing of the fastening unit to the underside of the kitchen worktop is provided by means of at least one adhesive connection. This can further increase efficiency in terms of work and / or assembly and / or disassembly and / or cost efficiency.In addition, assembly and / or disassembly effort can be reduced, and additional fixing elements, such as screw and / or snap-in connections, for securing the mounting unit to the underside of the kitchen countertop can be eliminated. Furthermore, the design can be improved.

[0019] In at least the assembled state and / or a pre-assembled state, the fastening unit is preferably fixed to the underside of the kitchen worktop and preferably glued on at least in a materially bonded manner. Additionally, it would also be conceivable to use force-fitting and / or form-fitting connections to fix the fastening unit to the underside of the kitchen worktop, such as plug-in connections and / or rotary connections and / or screw connections. The fastening unit could be at least partially coated with an adhesive on a side facing the kitchen worktop. The adhesive is preferably a non-metallic material intended to connect at least two elements through surface adhesion and its internal strength.In at least one method step, in particular an adhesive step, in the method for installing the cooktop system, the fastening unit can be adhesively bonded to the underside of the kitchen worktop. In this method step, in particular the adhesive step, the adhesive could be applied to the side of the fastening unit facing the kitchen worktop. Alternatively, the adhesive could be applied to the underside of the kitchen worktop. In the assembled state and / or the pre-assembled state, the adhesive preferably fixes the fastening unit at least partially in a materially bonded manner to the underside of the kitchen worktop. The cooktop device preferably has a double-sided adhesive tape which comprises the adhesive, by means of which the fastening unit can be fixed to the underside of the kitchen worktop and is fixed to the underside of the kitchen worktop, in particular at least in the assembled state.The fastening device for fixing the fastening unit to the kitchen worktop preferably comprises at least the adhesive, preferably the double-sided adhesive tape with the adhesive. Furthermore, the adhesive, in particular the double-sided adhesive tape, preferably has a shape which at least substantially corresponds to the shape of the surface of the fastening unit facing the kitchen worktop in the mounted state and / or the pre-mounted state. This makes it possible to achieve particularly stable fixing and particularly understandable assembly instructions. Furthermore, the adhesive preferably has advantageous properties with regard to at least heat resistance and / or holding force. The adhesive, in particular the double-sided adhesive tape, can have a material thickness of at least 0.1 mm, advantageously at most 0.3 mm, preferably at most 0.6 mm, and particularly preferably at most 1 mm.

[0020] The assembled state is, in particular, a state in which at least the fastening unit is fixed, in particular at least glued, to the underside of the kitchen worktop, in contrast to an unassembled state. In terms of a temporal progression, the unassembled state occurs before the assembled state. In the unassembled state, at least the fastening unit and / or the fastening device and the underside of the kitchen worktop are arranged separately from one another. Preferably, the hob device is arranged separately from the kitchen worktop in the unassembled state. It would also be conceivable for at least the adhesive and / or the fastening device to be fixed to the underside of the kitchen worktop ex works, during manufacture of the kitchen worktop. Preferably, the fastening device is already fixed to the underside of the kitchen worktop in the pre-assembled state.With regard to the temporal progression, the pre-assembled state particularly defines a state of the cooktop device after the unassembled state and before the assembled state. In the assembled state, the cooktop system is preferably fully assembled. Preferably, in the assembled state, the fastening device is fixed to the underside of the kitchen worktop, and the cooktop device is held by the fastening unit. Furthermore, in the assembled state, the cooktop device is preferably in a stored state. In the stored state, the inner cooktop component is preferably stored in the outer cooktop component. In the pre-assembled state, the cooktop device can have an unstored state or, preferably, the stored state. In the unstored state, the inner cooktop component and the outer cooktop component are preferably arranged separately from one another.

[0021] The hob device could, for example, comprise the heating unit. Preferably, the outer hob component of the hob device comprises at least one hob housing. Advantageously, the outer hob component comprises the hob housing at least for accommodating the inner hob component and / or the heating unit and / or at least one further unit of the hob device, such as an electronics unit and / or a fan unit. Preferably, the hob housing comprises at least one, in particular several, recess(es) for ventilation and / or for heat transport and / or for access, in particular cable connections, for example to an electronics unit. Preferably, the hob housing has a box-like shape, which is in particular designed at least substantially as a cuboid with a missing surface.The cooktop housing preferably has an at least substantially rectangular, plate-like base plate and four at least substantially rectangular, plate-like side plates, the main extension planes of which, starting from the transverse and longitudinal sides of the base plate, run at least substantially perpendicular to the main extension plane of the base plate. The base plate and the side plates are in particular integrally connected to one another. The term "at least substantially" refers to a degree of conformity to a reference shape. In this context, "at least substantially" should be understood to mean that a deviation from the reference shape is less than 25%, preferably less than 10%, and particularly preferably less than 5% of the area of ​​the reference shape.In this context, “at least substantially perpendicular” should be understood as an angle between 85° and 95°, preferably between 88° and 92° and particularly advantageously 90°.

[0022] The outer cooktop component preferably comprises at least the cooktop housing and / or the at least one electronic unit and / or the at least one fan unit. Furthermore, it is conceivable for the outer cooktop component to comprise additional units, for example, sensors and / or additional electronic units.

[0023] The outer cooktop component, in particular the cooktop housing of the outer cooktop component, could, for example, consist at least partially and preferably at least largely of a mineral, for example glass and / or ceramic, and / or a plastic and / or a metal and / or a composite material. Preferably, the cooktop housing of the outer cooktop component consists at least largely of metal. Preferably, the cooktop housing of the outer cooktop component consists at least largely, and in particular entirely, of steel. This makes it possible to achieve, in particular, advantageous strength, electrical conductivity, and cost-effectiveness of the cooktop component.

[0024] The inner hob component preferably has a box-like shape, which in particular is formed at least substantially as a cuboid with a missing surface. The inner hob component preferably has an at least substantially rectangular plate-like base plate and four at least substantially rectangular plate-like side plates, the main extension planes of which extend perpendicularly to the main extension plane of the base plate, starting from the transverse and longitudinal sides of the base plate.

[0025] The base plate of the inner hob component is preferably formed as a plate-like element with a material thickness of at least 1 mm, advantageously at least 1.5 mm. This allows for a particularly thin and compact construction and design of the inner hob component. Furthermore, the inner hob component is preferably made at least largely of metal. Preferably, the inner hob component is made at least largely, and in particular entirely, of aluminum. This allows for advantageous properties, in particular with regard to weight, conductivity, strength, and cost-effectiveness, to be achieved.

[0026] The inner hob component preferably has at least one, in particular several, recesses for receiving screw connections and / or for receiving an electronics unit and / or for ventilation and / or for access, in particular for cable connections, for example to at least the electronics unit and in particular to the heating unit. Preferably, at least one side panel, in particular all side panels, of the inner hob component has at least one recess.

[0027] The side panels can be formed at least partially and advantageously in one piece, in particular as a single piece, with the base plate of the inner cooktop component. “Integral” is to be understood as at least materially connected, for example by an adhesive process, an injection-molding process and / or a welding process and / or another process that appears appropriate to a person skilled in the art. “Integral” is to be understood as formed in one piece. Preferably, this one piece is produced from a single blank, a mass and / or a cast, particularly preferably in an injection-molding process, in particular a single- and / or multi-component injection-molding process, and / or in a stamping process from the single blank. Particularly preferably, when produced from a blank, the inner cooktop component is shaped, in particular bent, in at least one edge region in such a way that the side panels are formed.

[0028] Furthermore, the inner hob component is at least partially movably mounted in the outer hob component, wherein this should be understood to mean a mobility of at least 0.5 mm, preferably at least 1 mm and particularly preferably at least 1.5 mm in at least one direction. In particular, a mobility of a maximum of 3.5 mm, preferably a maximum of 3 mm and particularly preferably a maximum of 2.5 mm in at least one direction should be understood. The inner hob component is, in particular in a stored state, preferably completely accommodated in the outer hob component, in particular the hob housing of the outer hob component. The inner hob component is preferably mounted within the outer hob component, in particular within the hob housing of the outer hob component, so as to be movably mounted in at least one direction.

[0029] The cooktop system could, for example, also comprise several, specifically at least two, cooktop devices. It would be conceivable for each cooktop device to be provided to define and / or provide precisely one cooking surface area at least for heating the installation unit. The at least two cooktop devices could have at least one electronic connection to one another. Preferably, the at least two cooktop devices are arranged next to one another on the underside of the kitchen worktop. It would be conceivable for the at least two cooktop devices to be held by means of a common fastening device. Preferably, however, the at least two cooking devices are each held by their own fastening device. In this way, excessive loading of the kitchen worktop, in particular thermal loading, can be avoided by maintaining a minimum safety distance between one heating zone and an adjacent heating zone.Furthermore, space can be advantageously provided for supports of the kitchen worktop.

[0030] Here and in the following, “intended” should be understood to mean specially programmed, designed and / or equipped. The fact that an object is intended for a specific function should be understood to mean that the object fulfills and / or executes this specific function in at least one application and / or operating state. Furthermore, numerals such as “first” and “second” which precede certain terms in this document merely serve to differentiate between method steps and / or objects and / or to associate objects with one another and do not imply any existing total number and / or ranking of the objects and / or method steps. In particular, a “second” object and / or a “second” method step does not necessarily imply the presence of a “first” object and / or method step.

[0031] It is further proposed that the inner hob component be mounted in the outer hob component in a plane parallel to a main extension plane of the fastening device so as to be partially movable. This makes it possible to achieve a particularly high degree of flexibility of the hob device, in particular with regard to an alignment of the hob device during assembly. In particular, a particularly high degree of assembly efficiency can be provided by a simple and precise alignment option for the hob device. The inner hob component is preferably completely accommodated in the outer hob component, in particular in the hob housing of the outer hob component, in particular at least in an assembled and / or pre-assembled and / or unassembled state.Preferably, the inner hob component is movably mounted within the outer hob component, in particular within the hob housing of the outer hob component, in the plane parallel to the main extension plane of the fastening device.

[0032] The outer cooktop component preferably has at least one support element on which the inner cooktop component rests. The at least one support element preferably supports the inner cooktop component from a position arranged below the inner cooktop component and, at least in the assembled state, prevents movement of the inner cooktop component in a downward direction of gravity. This makes it possible, in particular, to achieve advantageous storage characteristics. Furthermore, the at least one support element is preferably formed on the side plate of the cooktop housing of the outer cooktop component, which side plate is oriented perpendicular to the main extension plane of the fastening device. The support element can be formed integrally, in particular as a single piece, with the outer cooktop component, in particular the side plate of the cooktop housing of the outer cooktop component.Preferably, the support element is formed from the side panel of the hob housing, in particular by partially punching out and / or sawing and / or cutting and then bending at least one tab from the side panel of the hob housing. In particular, the bending of the support element is directed in a direction parallel to the main extension plane of the fastening device.

[0033] The outer cooktop component, in particular the cooktop housing of the outer cooktop component, preferably has more than one support element. The cooktop housing of the outer cooktop component preferably has at least one support element, in particular two support elements, on more than one side panel, in particular on exactly three side panels. Movement of the inner cooktop component in an out-of-plane direction in the stored state in the outer cooktop component is preferably prevented. This makes it possible to achieve high structural stability and / or safety in an out-of-plane direction. Furthermore, falling out of the inner cooktop component from the outer cooktop component, in particular from the cooktop housing of the outer cooktop component, in particular during assembly of the cooktop system, can advantageously be prevented.The hob device preferably has at least one further element, in particular at least one upward stop, which prevents upward movement of the inner hob component in a position arranged above the inner hob component, at least in the stored state. The at least one upward stop prevents movement of the inner hob component in an upward direction of gravity, at least in the assembled state.

[0034] Furthermore, the main extension plane of the fastening device is preferably arranged parallel to the main extension plane of the kitchen worktop in at least the pre-assembled state and / or the assembled state.

[0035] Furthermore, it is proposed that the fastening unit comprise at least one retaining element and a plate-like base support element. This allows for a particularly compact construction and design of the fastening unit. Furthermore, efficiency, specifically with regard to product efficiency, labor efficiency, assembly efficiency, disassembly efficiency, manufacturing efficiency, and / or cost efficiency, can be further increased. In particular, unstable fixation of the fastening unit to the cooktop device and / or to the kitchen worktop can be avoided.

[0036] Preferably, the base support element is provided for fixing to the kitchen worktop, wherein the base support element is in particular in direct contact with the adhesive. Furthermore, the base support element preferably has a shape that at least substantially matches the shape of the adhesive, at least in an assembled state and / or in a pre-assembled state and in a direction perpendicular to the main extension plane of the fastening device. It is further proposed that the at least one holding element holds the hob device. This advantageously ensures the stability and / or security of fixing the fastening unit to the kitchen worktop, as well as the stability and / or security of holding the hob device by the fastening unit.In particular, the fastening unit comprises at least two, preferably at least three, and preferably exactly four retaining elements, which are arranged on opposite transverse sides of the hob device, at least in the assembled state. This allows, in particular, an advantageous weight distribution in the holder to be achieved.

[0037] The holding element and the base support element are preferably formed separately from one another. Furthermore, the hob device is preferably connected indirectly to the base support element by means of the at least one holding element. In particular, the at least one holding element can be connected to the base support element by means of a force-fitting and / or form-fitting connection. In an installation method, the at least one holding element for holding the hob device can be screwed at least to the base support element in at least one method step, in particular a fixing step. In at least the assembled state, the at least one holding element can be connected to the base support element by means of the force-fitting and / or form-fitting connection.

[0038] Preferably, the at least one holding element is screwed to at least the base support element, at least in the assembled state and / or the pre-assembled state. This allows a design to be further improved and a particularly simple, compact and preferably reversibly connectable and detachable fixation of the at least one holding element to at least the base support element to be provided. Furthermore, efficiency, for example with regard to product and / or labor and / or assembly and / or disassembly and / or manufacturing and / or cost efficiency, can be increased. In addition, assembly and / or disassembly effort can be reduced. The holding element preferably has at least one screw connection with at least one screw. Advantageously, the holding element also has a screw nut, for example a wing nut.Alternatively or additionally, another connection that would be considered appropriate by a person skilled in the art, such as an adhesive and / or plug-in connection, would also be possible. Preferably, the at least one retaining element is reversibly connectable to the base support element and / or reversibly detachable from the base support element. In addition to being screwed to the base support element, the retaining element could be screwed to the kitchen worktop.

[0039] The base support element is preferably plate-like with a material thickness of at least 1 mm and advantageously at least 1.5 mm. This allows for a particularly thin and compact construction and design of the base support element. The material thickness of the base support element could be at most 1.8 mm, in particular at most 2 mm, and advantageously at most 3 mm. The base support element could, for example, have a round, oval, or square shape. The base support element preferably has a rectangular shape.

[0040] The at least one holding element is preferably at least substantially step-shaped, wherein in particular an at least substantially rectangular, flat main component of the at least one step-shaped holding element has a step element on each of its opposite transverse sides, which preferably has an at least substantially rectangular, flat shape. Preferably, the main extension plane of the main component of the step-shaped holding element is at least substantially perpendicular to the main extension planes of the step elements. Preferably, the main extension planes of the step elements are arranged parallel to the main extension plane of the base support element and the hob device, at least in the assembled state and / or the pre-assembled state.In this way, an advantageous mounting of the hob device can be achieved and / or a first alignment of the outer hob component can already be advantageously provided when inserting the hob device into the at least one step-shaped holding element. Furthermore, the at least one step-shaped holding element preferably has at least one screw connection for a connection to the base support element. Furthermore, it is possible for the at least one holding element to be designed merely as a screw connection and in particular to have at least one screw and one screw nut. Preferably, the fastening unit has at least one, in particular two, step-shaped holding element(s) and at least one, in particular two, holding element(s) which are designed merely as a screw connection.In further embodiments of the invention, it is proposed that the at least one holding element, in particular the step-shaped holding element, provides at least one support element for the hob device. This can further increase efficiency, namely assembly and / or disassembly of a hob component can be facilitated and assembly and / or disassembly effort can be reduced. In addition, stability and / or safety can be increased because the hob device, in at least one assembled state, can be placed on at least one support element on the underside of a kitchen worktop. Furthermore, a weight of at least the hob device can advantageously be distributed over a large area beneath the kitchen worktop, thus avoiding local stresses in the kitchen worktop.In particular, at least the support element, at least in the assembled state, is intended to bear and / or absorb a weight force of the hob device.

[0041] Alternatively, it would be conceivable for the hob device to be directly connected to the base support element and held directly by the base support element, in particular without any intermediate components and / or parts. The hob component could be connected to the base support element by means of a material-to-material connection, such as by means of an adhesive and / or welded connection. The hob device could be formed at least partially in one piece, advantageously in one piece, with the base support element.

[0042] It is further proposed that the fastening device comprise at least one coarse alignment element, which is designed in particular as an alignment edge, for coarsely aligning the outer hob component with respect to the fastening unit. This can advantageously increase assembly efficiency. In particular, alignment of the outer hob component during assembly can be provided in a simple and understandable manner. Preferably, the at least one coarse alignment element is provided for specifying a coarse alignment position of the outer hob component with respect to the fastening unit in at least one assembly step.

[0043] The coarse alignment element has a main extension plane which is preferably at least substantially perpendicular, preferably perpendicular to the main extension plane of the fastening device and / or a main extension plane of the base support element and / or the

[0044] Main extension plane of the hob housing is formed in at least the assembled state and / or the pre-assembled state.

[0045] Preferably, the coarse alignment element is plate-like and has a thickness equal to the specified interval for the thickness of the base support element. The at least one coarse alignment element is preferably in contact with an outer side surface, in particular the side plate of the cooktop housing, of the outer cooktop component, at least in the assembled state and / or during assembly. The at least one coarse alignment element is preferably arranged completely outside the outer cooktop component, at least in the assembled state and / or during assembly. The coarse alignment element preferably has smooth side surfaces for positively receiving the outer cooktop component, in particular the cooktop housing of the outer cooktop component.The coarse alignment element is preferably designed as an alignment edge against which an outer side surface of the outer hob component, in particular the side plate of the hob housing of the outer hob component, abuts in the assembled state and / or during assembly, whereby a coarse alignment can take place.

[0046] It is further proposed that the fastening device has at least two, preferably at least three, preferably at least four and particularly preferably at least six, in particular exactly six, coarse alignment elements, whereby a precision of the coarse alignment of the outer hob component can be increased.

[0047] Preferably, at least in the assembled state, no coarse alignment element is formed on at least one mounted transverse side and / or longitudinal side of the outer cooktop component. Preferably, at least in the assembled state, no coarse alignment element is formed on exactly one transverse side of the outer cooktop component, which in particular is opposite a transverse side that is held by at least one step-shaped holding element. This allows advantageous assembly to be achieved, in particular by simplified lateral insertion of the cooktop device into the fastening device during assembly. Preferably, at least in the assembled state and / or during assembly, one transverse side of the outer cooktop component is in contact with at least one, advantageously with two, coarse alignment elements that can predetermine a first coarse alignment.Furthermore, preferably two further coarse alignment elements are in contact with two opposite longitudinal sides of the outer hob component in the assembled state and / or during assembly, whereby the outer hob component can be guided and / or pushed into the aligned state in the assembly step.

[0048] The fastening unit preferably has at least one coarse alignment element. Preferably, the at least one coarse alignment element is connected to the base support element of the fastening unit. This allows for advantageous positioning of the at least one coarse alignment element for a particularly efficient assembly process. It would be conceivable for the at least one coarse alignment element to be formed separately from the base support element.

[0049] It is further proposed that the at least one coarse alignment element be connected in one piece to the base support element. Such a configuration can advantageously increase the stability of the fastening device and advantageously reduce the complexity of the fastening device. Preferably, the coarse alignment element is formed in one piece with the base support element of the fastening unit, thereby advantageously increasing cost and manufacturing efficiency. In addition, the coarse alignment element is preferably formed from the base support element, in particular by partially punching out and / or sawing and / or cutting and subsequently bending at least one plate-like element from the base support element. As a result, the coarse alignment element can be manufactured in a particularly simple and cost-effective manner starting from the plate-like base support element.Alternatively, it would be conceivable that the at least one coarse alignment element is formed separately from the fastening unit, in particular from the base support element, and is connected thereto.

[0050] It is also proposed that the fastening device have at least one fine alignment element, which is designed in particular as an alignment bridge, for fine alignment of the inner hob component with respect to the fastening unit. This can advantageously increase assembly efficiency. In particular, alignment of the inner hob component during assembly can be provided in a simple and understandable manner. Furthermore, particularly precise alignment of the inner hob component can be achieved. Preferably, the at least one fine alignment element is provided for specifying a fine alignment position of the inner hob component with respect to the fastening unit in at least one assembly step.

[0051] The fine alignment element has a main extension plane which is preferably formed at least substantially perpendicular to the main extension plane of the fastening device and / or a main extension plane of the base support element and / or the main extension plane of the hob housing in at least the assembled state.

[0052] The fine alignment element is preferably designed as an alignment bridge having a bridge-like shape. The alignment bridge has, in particular, precisely two connection points to another element of the fastening device, between which the alignment bridge is formed in a curved shape. Preferably, the distance between the alignment bridge and the other element is at a maximum at a midpoint between the two connection points. The alignment bridge has, in particular, a thickness equal to the specified interval for the thickness of the base support element.

[0053] It is further proposed that the fastening device has at least two, preferably at least three and preferably at least four, in particular exactly four, fine alignment elements, which in particular have the same shape. The fastening device preferably has a maximum of four fine alignment elements. Preferably, at least one, in particular exactly one, fine alignment element is formed on each transverse and / or longitudinal side of the inner hob component, at least in the assembled state. This allows particularly precise fine alignment to be achieved in a particularly simple manner by specifying the fine alignment on more than one side of the inner hob component. Preferably, the fine alignment element is formed at a distance from the coarse alignment element and / or is not in direct contact with the coarse alignment element.Preferably, the fine alignment element is connected to the coarse alignment element by at least one further element, in particular by the base support element. Preferably, the fastening unit comprises the at least one fine alignment element. Preferably, the at least one fine alignment element is connected to the base support element of the fastening unit. This allows advantageous positioning of the at least one fine alignment element for a particularly efficient assembly process. It would be conceivable for the at least one fine alignment element to be formed separately from the base support element.

[0054] It is further proposed that the at least one fine alignment element is connected in one piece to the base support element. This advantageously increases the stability of the fastening device and advantageously reduces the complexity of the fastening device. Preferably, the fine alignment element is formed in one piece with the base support element of the fastening unit, thereby advantageously increasing cost and manufacturing efficiency. Furthermore, the fine alignment element is preferably formed from the base support element, in particular by partially punching out and / or sawing and / or cutting and subsequently bending at least one tab from the base support element. This allows the fine alignment element to be manufactured in a particularly simple and cost-effective manner starting from the plate-like base support element.

[0055] Advantageously, the inner cooktop component has at least one slot-like recess for receiving the at least one fine alignment element. This allows for particularly efficient and intuitive fine alignment of the inner cooktop component during assembly. In particular, incorrect alignment of the inner cooktop component, at least in the assembled state, can be advantageously avoided.

[0056] In the present case, the slot-like recess is to be understood as a recess that preferably has a width corresponding to a maximum of 50%, in particular a maximum of 20%, of a length of the recess and completely penetrates a wall of the inner cooktop component. The recess is preferably formed in the side panel of the inner cooktop component.

[0057] The at least one fine alignment element is preferably at least partially, in particular only partially, received in the slot-like recess in at least the assembled state and / or during assembly. The fine alignment element preferably has two, in particular opposite, side surfaces, which in at least the assembled state and / or during assembly bear against an edge of the slot-like recess. Preferably, at least a first cross-sectional surface of the fine alignment element is completely received in the slot-like recess in at least one assembled state and / or during assembly. The first cross-sectional surface is preferably arranged perpendicular to a main extension direction of the fine alignment element. This allows advantageous stability to be achieved and lateral slipping of the inner cooktop component from the fine alignment element can be prevented.In this context, a "main extension direction" of an object is understood to be a direction that runs parallel to the longest edge of the smallest geometric cuboid that just completely encloses the object. In particular, the main extension direction of the object extends within a main extension plane of the object.

[0058] Preferably, at least one further cross-sectional area of ​​the fine alignment element, arranged perpendicular to the cross-sectional area, is arranged at least largely outside the slot-like recess. This allows advantageous mobility of the inner cooktop component in a direction outside the first cross-sectional area during alignment.

[0059] The inner hob component preferably has at least two, preferably at least three, and preferably at least four, in particular exactly four, slot-like recesses, which in particular have the same shape. The inner hob component preferably has at least one number of slot-like recesses that corresponds to the number of fine alignment elements of the fastening device. Each fine alignment element is preferably designed to be at least partially received in a respective slot-like recess. This allows for particularly precise, intuitive, and secure fine alignment of the inner hob component.

[0060] It is further proposed that the at least one fine alignment element permits thermal expansion of the inner cooktop component in at least one assembled state in one direction. This allows thermal expansion of the inner cooktop component to be at least partially controlled, in particular at least in one direction. Thus, a stable, in particular particularly temperature-resistant, fine alignment of the inner cooktop component can be achieved.

[0061] The direction of thermal expansion released by the fine alignment element preferably runs along the main extension direction of the fine alignment element. The main extension direction of the fine alignment element preferably runs parallel to the main extension plane of the fastening device and in particular parallel to a normal direction of the slot-shaped recess of the inner cooktop component, in which the fine alignment element is at least partially received in at least the assembled state. The direction released by the fine alignment element preferably coincides with a direction in which the inner cooktop component is at least partially movably mounted in the outer cooktop component. This can reduce the complexity of the cooktop system and / or increase manufacturing efficiency.

[0062] It is proposed that the fastening device comprise at least two, preferably at least three, and preferably at least four, in particular exactly four, fine alignment elements, each of which permits thermal expansion of the inner hob component in a respective direction, at least in the assembled state. Preferably, two directions are directed in opposite directions. This increases control over thermal expansion of the inner hob component and / or allows thermal expansion to occur in an advantageously directed manner. Thus, a particularly stable, in particular particularly temperature-resistant, fine alignment of the inner hob component can be achieved.

[0063] It is further proposed that the fastening device comprise at least one further fine alignment element, which, together with the at least one fine alignment element, defines a central point of the inner cooktop component in an assembled state, which has a temperature-independent position relative to the fastening unit. This allows a particularly stable position to be created on the inner cooktop component, which is particularly suitable for fastening components of the cooktop device whose function and efficiency are particularly sensitive to a deviation in fine alignment.

[0064] The central point is preferably formed at a midpoint of a distance between the two fine alignment elements on the inner hob component, at least in the assembled state. In particular, the central point is formed at a midpoint of a distance between the two slot-like recesses of the inner hob component associated with the two fine alignment elements, at least in the assembled state. It is proposed that the fastening device preferably have at least three and preferably at least four, in particular exactly four, fine alignment elements. The central point is preferably formed at a midpoint of the distance between all fine alignment elements.

[0065] It is also proposed that the cooktop device have at least one heating element arranged on the inner cooktop component. Such a configuration allows for particularly precise alignment of the heating element with respect to the fastening device. Furthermore, particularly efficient and simple installation of the heating element on the kitchen worktop and / or on the fastening device can be provided.

[0066] Preferably, the heating element is supported at least by the inner hob component. Preferably, the heating element is connected to the inner hob component. Preferably, the heating element is held at least partially in a form-fitting manner on the inner hob component. The fastening device, in particular the base support element of the fastening unit, preferably has a recess in which the heating element, which is mounted in particular on the inner hob component, can be received at least in the assembled state. The recess is at least substantially circular and has at least a size corresponding to the heating element. This makes it possible to achieve a particularly compact design of the hob system. Furthermore, a weakening of the fields of an induction heating element at a position of a heating zone above the kitchen worktop caused by the fastening unit can be advantageously avoided.

[0067] Furthermore, it is proposed that the cooktop device have at least one sensor arranged on the inner cooktop component. This allows at least one parameter of the cooktop device, for example, the presence of a mounting unit in a cooktop area and / or a temperature of at least the mounting unit, to be advantageously determined. Furthermore, an advantageous appearance and user comfort of the cooktop system can be enhanced by providing the sensor, in particular invisible to the user, beneath the kitchen worktop.

[0068] The sensor is preferably at least one temperature sensor, preferably an IR sensor for detecting and / or measuring a temperature of the installation unit, in particular a cooking utensil, through the opening in the kitchen worktop. The opening is preferably provided at least to enable a particularly low-loss transmission of infrared radiation and / or visible light to and / or from the sensor, from an area below the kitchen worktop to an area above the kitchen worktop. This allows a temperature and / or a temperature profile and / or the presence and / or absence of an installation unit in an operating state to be measured particularly efficiently.

[0069] Preferably, the sensor is arranged in a center of the heating element and / or at least partially accommodated in a recess in the inner cooktop component. Furthermore, the sensor is preferably connected to the inner cooktop component. Preferably, the heating element is supported at least by the inner cooktop component, thereby enabling particularly precise alignment of the sensor with respect to the fastening device and, in particular, the opening in the kitchen worktop. This allows for particularly reliable and efficient measurement by the sensor.

[0070] It is further proposed that, in an assembled state, the central point be arranged to overlap a center of the heating element and / or the sensor and / or an opening in the kitchen worktop in at least one direction. This allows for particularly reliable and precise alignment of the center of the heating element and / or the sensor with respect to the fastening device and / or with respect to the opening in the kitchen worktop at different operating temperatures and, in particular, in the event of thermal expansion of the internal cooktop component. In particular, it allows for particularly reliable and efficient measurement of the sensor through the opening in the kitchen worktop.

[0071] Furthermore, a particularly stable position of the heating element relative to a heating zone on the kitchen countertop can be achieved. Furthermore, reliable light transmission for marking a heating zone could be provided, for example, from the lighting unit, which is arranged in particular in the outer cooktop component, through the center of the heating element and the opening in the kitchen countertop.

[0072] Furthermore, the invention is based on a method for installing a hob system, in particular the aforementioned hob system, wherein the hob device is aligned to the fastening device in at least one assembly step by means of at least one coarse alignment element, wherein an inner hob component of the hob device is automatically aligned to the fastening device by means of at least one fine alignment element.

[0073] Such a method can provide convenient, efficient, precise, and secure installation of the cooktop system. In particular, misalignment of the inner cooktop component during rough alignment of the outer cooktop component can be avoided. Furthermore, fine alignment of the inner cooktop component can be carried out particularly easily. In particular, precise fine alignment can be achieved regardless of the skills of an installer. Furthermore, the installation method can be carried out by just one person. The method for installing the cooktop system could comprise multiple method steps and / or method sub-steps. Preferably, the method comprises at least one method step for fixing the fastening device to the underside of the kitchen worktop, in particular by means of an adhesive process.Furthermore, the method preferably comprises a step of inserting the hob device into a fastening unit of the fastening device, wherein the hob device is placed in a holding element of the fastening unit and simultaneous coarse and fine alignment of the outer and inner hob components is carried out using the coarse and fine alignment elements. Furthermore, the method preferably comprises at least one further step in which the hob device is fixed to the fastening unit, in particular by means of screw connections.

[0074] The cooktop system and / or the cooktop device and / or the installation method should not be limited to the application and embodiment described above. In particular, the cooktop system and / or the cooktop device and / or the installation method may have a number of individual elements, components, units, and method steps that differs from the number stated herein to fulfill a functionality described herein. Furthermore, within the value ranges specified in this document, values ​​within the stated limits are also to be considered disclosed and can be used arbitrarily.

[0075] Drawings

[0076] Further advantages will become apparent from the following description of the drawings. The drawings illustrate exemplary embodiments of the invention. The drawings, the description, and the claims contain numerous features in combination. Those skilled in the art will also expediently consider the features individually and combine them into useful further combinations.

[0077] They show:

[0078] Fig. 1 a hob system with a hob device and a kitchen worktop,

[0079] Fig. 2 the hob system with the hob device and with a fastening device as well as the kitchen worktop in a pre-assembled state,

[0080] Fig. 3 a fastening unit of the fastening device,

[0081] Fig. 4 an inner and an outer hob component of the

[0082] Hob device, Fig. 5 the hob system in an assembled state,

[0083] Fig. 6 the inner hob component,

[0084] Fig. 7 the hob system during an insertion and alignment step of the assembly and

[0085] Fig. 8 is a flowchart of a method for installing the hob system.

[0086] Description of the embodiments

[0087] For the sake of clarity, only one of the multiple objects in the figures is provided with a reference symbol.

[0088] Figure 1 shows a cooktop system 10. The cooktop system 10 is designed as an induction cooktop system. A kitchen worktop 30 in this case has a cooking surface area 56. The cooktop system 10 is arranged below the kitchen worktop 30 (see Figure 2). The cooktop system 10 can be assigned to at least the cooking surface area 56. The kitchen worktop 30 is provided at least for the installation of at least one installation unit 50. The installation unit 50 can be arranged in the cooking surface area 56 at least for heating purposes. The installation unit 50 is, as shown in Figure 1, designed, for example, as a cooking utensil, specifically as a pot. It would also be conceivable for the installation unit 50 to alternatively and / or additionally be a support unit and / or a small household appliance, such as a kettle and / or a coffee machine and / or a blender and / or a stirrer.The cooktop system 10 also includes a user interface 106, which is integrated, for example, into the kitchen worktop 30. At least the heating of the installation unit 50 can be controlled and / or regulated by an operator using the user interface 106.

[0089] The kitchen worktop 30 has an opening 54. In the present case, the opening 54 is arranged in the cooking surface area 56 and is provided at least to indicate to the operator a setup position for the setup unit 50 on the kitchen worktop 30, at least for heating purposes. For example, a lighting unit of a cooking surface device 12 and / or a sensor unit of the cooking surface device 12, for example an IR sensor unit for measuring the temperature of the setup unit 50, can be arranged and / or located in the opening 54 and / or below the opening 54. In this exemplary embodiment, the setup unit 50 is provided for positioning on the opening 54. In the present case, the opening 54 forms a center point of the cooking surface area 56.

[0090] The cooktop system 10 comprises the cooktop device 12, embodied here as an induction cooktop device, which has an outer cooktop component 14 and an inner cooktop component 16 (see Figures 2 and 4). The cooktop system 10 also comprises a fastening device 20, which is provided for fixation to an underside of the kitchen worktop 30 and which has a fastening unit 18 for holding at least the cooktop device 12, wherein the inner cooktop component 16 is at least partially movably mounted in the outer cooktop component 14 (see Figures 2 and 4).

[0091] The following Figures 2 to 7 serve to explain the fixing and alignment of the cooktop device 12 to the underside of the kitchen worktop 30 using the fastening device 20. Figure 8 schematically shows a process flow diagram of a method for installing the cooktop system 12. The method for installing the cooktop device 12 could comprise several process steps and / or process sub-steps. Here, the method is described by way of example using an adhesive step 108, an insertion and alignment step 110, and a fixing step 112.

[0092] Figure 2 shows the cooktop system 10 with the cooktop device 12 and the fastening device 20 below the kitchen worktop 30 in a preassembled state. The cooktop device 12 is in a stored state. The inner cooktop component 16 is partially movably mounted in the outer cooktop component 14 in a plane 28 parallel to a main extension plane 22 of the fastening device 20. The inner cooktop component 16 is received in the outer cooktop component 14. In this case, the inner cooktop component 16 is received in a cooktop housing 60 of the outer cooktop component 14. The inner cooktop component 16 is movably mounted within the cooktop housing 60 in the plane 28 parallel to the main extension plane 22 of the fastening device 20.The inner cooktop component 16 is movably mounted within the cooktop housing 60 in the plane 28 parallel to the main extension plane 22 of the fastening device 20 in a defined region, wherein a movement of the inner cooktop component 16 relative to the cooktop housing 60 is limited by the cooktop housing 60. The cooktop housing 60 forms a receiving region for receiving the inner cooktop component 16, wherein the receiving region in the plane 28 parallel to the main extension plane 22 of the fastening device 20 is larger than an outer shape of the inner cooktop component 16. In the present case, a movement of the inner cooktop component 16 in a direction 48 outside the plane 22 in the stored state in the outer cooktop component is prevented, at least in order to prevent the inner cooktop component 16 from falling out of the outer cooktop component 14 during assembly of the cooktop system 10 (see Figure 7).The cooktop device 12 has at least one further element, in this case at least one upward stop 66. The upward stop 66 prevents movement of the inner cooktop component 16 in the direction 48 perpendicular to the plane 22, at least in the stored state. The inner cooktop component 16 is supported in the cooktop housing 60 by means of at least one support element 58 (see Figure 4). The support element 58 supports the inner cooktop component 16 from a position arranged below the inner cooktop component 16 in the stored state. Movement of the inner cooktop component 16 in a direction opposite to the direction 48 outside the plane 22 is prevented in the state stored in the outer cooktop component 14. The support element 58 prevents movement of the inner cooktop component 16 in the direction perpendicular to the plane 28 and opposite to the direction 48, at least in the stored state.The direction 48 is formed parallel to a direction 80 opposite the direction of gravity, at least in the assembled state, and in this case also in the pre-assembled state. During assembly, the direction 48 deviates from the direction 80 opposite the direction of gravity (see Figure 7).

[0093] The fastening device 20 has a fixing means for fixing to the underside of the kitchen worktop 30. In this case, the fixing means is an adhesive (not shown), specifically in this case in the form of a double-sided adhesive tape. The fastening device 20 also has the fastening unit 18. The fastening unit 18 is glued to the underside of the kitchen worktop 30 by means of the fixing means. The fastening unit 18 has at least one holding element 24 and a plate-like base support element 26. In this case, the fixing means is located on an upper side of the plate-like base support element 26. The fixing means is located between the base support element 26 and the kitchen worktop 30. The fixing means covers, in particular, a large part of an upper side of the base support element 26. However, it would also be conceivable for the fixing means to be applied only in specific spots.Additionally, at least one force-locking and / or positive-locking connection would also be conceivable, such as a plug-in and / or snap-in and / or screw connection. The cooktop device 12 and the fastening device 20 are arranged separately from one another in the preassembled state.

[0094] Figure 3a shows the fastening unit 18 of the fastening device 20. The base support element 26 is designed as a plate-like element with a material thickness of at least 1 mm. In the present case, the base support element 26 has a recess 78. In the assembled state, the recess 78 is provided for receiving a heating element 42 and / or for ensuring that the heating element 42 is not covered by the base support element 26. The recess 78 is formed, for example, by a circular recess. The heating element 42 is an inductor coil in the present case (see Figure 2). The fastening unit 18 comprises two holding elements 24 in a stepped configuration 74. The holding element 24 in the stepped configuration 74 can be screwed to at least the base support element 26 by means of at least one screw connection (not shown).It would also be conceivable for the screw connection to be additionally provided for screwing at least the holding element 24 in the stepped configuration 74 to the underside of the kitchen worktop 30. In the present case, the fastening unit 18 also comprises two holding elements 24 in a screw-shaped configuration 76. The holding element 24 in the screw-shaped configuration 76 comprises only one screw connection, namely in the present case at least one screw and one screw nut.

[0095] The fastening device 20 has at least one coarse alignment element 32 for a coarse alignment of the outer cooktop component 14 with respect to the fastening unit 18. The at least one coarse alignment element 32 specifies a coarse alignment of the outer cooktop component 14 in an assembled state and / or during assembly (see Figures 5 and 7). The fastening unit 20 has the at least one coarse alignment element 32. The at least one coarse alignment element 32 is integrally connected to the base support element 26 and formed integrally with the base support element 26. Furthermore, the at least one coarse alignment element 32 is formed from the base support element 26 by partially punching out and / or sawing and / or cutting and then bending at least one plate-like element from the base support element 26.The at least one coarse alignment element 32 is plate-like and has the same thickness as the plate-like base support element 26. The at least one coarse alignment element 32 is formed in particular by an extension extending perpendicular to a main extension plane of the base support element 26. The fastening device 18 here has six coarse alignment elements 32. The coarse alignment elements 32 are arranged mirror-symmetrically, with two coarse alignment elements 32 each having the same shape and arranged opposite one another with respect to an axis of symmetry 68. The axis of symmetry 68 runs along the main extension direction of the base support element 26.

[0096] The fastening device 20 has at least one fine alignment element 34 for finely aligning the inner cooktop component 16 with respect to the fastening unit 18. The at least one fine alignment element 34 provides fine alignment of the inner cooktop component 16 in an assembled state and / or during assembly (see Figures 5 and 7). The fastening unit 20 has the at least one fine alignment element 34. The at least one fine alignment element 34 is integrally connected to the base support element 26 and formed integrally with the base support element 26. Furthermore, the at least one fine alignment element 34 is formed from the base support element 26 by partially punching out and / or sawing and / or cutting and subsequently bending at least one tab from the base support element 26. The at least one fine alignment element 34 has the same thickness as the plate-like base support element 26.The at least one fine alignment element 34 is formed in particular by a bridge protruding perpendicular to a main extension plane of the base support element 26. The fastening device in this case has four fine alignment elements 34. Figure 3b shows an enlargement of the coarse alignment element 32 and the fine alignment element 34. The coarse alignment element 32 is designed as an alignment edge. The fine alignment element 34 is designed as an alignment bridge.

[0097] Figure 4 shows the outer cooktop component 14 and the inner cooktop component 16 in an unsupported state. The outer cooktop component 14 and the inner cooktop component 16 are arranged separately from one another in the unsupported state. The outer cooktop component 14 is embodied here as the cooktop housing 60. The cooktop housing 60 is box-shaped. The cooktop housing 60 has a plate-like base plate 84. The cooktop housing 60 further has four plate-like side plates 82, which extend from the longitudinal and transverse sides of the base plate 84, perpendicular to the base plate 84. In addition, the outer cooktop component 14 could have additional units (not shown).

[0098] The support element 58 is formed on a side plate 82 of the cooktop housing 60 that is oriented perpendicular to the plane 22. The support element 58 is formed in one piece with the outer cooktop component 14. In this case, the support element 58 is formed in one piece with the side plate 82 of the cooktop housing 60. The support element 58 is preferably formed by partially punching out and / or sawing and / or cutting and then bending at least one tab from the side plate 82 of the cooktop housing 60. In this case, the support element 58 is bent in the plane 22 within the box-like cooktop housing 60. The cooktop housing 60 has more than one support element 58. In this case, the cooktop housing 60 has two support elements 58 on each of three side plates 82. On a fourth side plate 82, the cooktop housing 60 has a support surface 86. The support surface 86 extends over the entire length of the side plate 82.The support surface 86 and the support elements 58 support the inner cooktop component 16 in the stored state.

[0099] The inner cooktop component 16 is box-shaped in the present case. The inner cooktop component 16 has at least one plate-like base plate 96. The inner cooktop component 16 further has four plate-like side plates 46, which extend from the longitudinal and transverse sides of the base plate 96 and perpendicular to the base plate 96. The side plate 46 is formed integrally with the base plate 96 of the inner cooktop component 16. In the present case, the inner cooktop component 16 is bent from a blank at least in an edge region 64 such that the side plate 46 is formed.

[0100] The inner cooktop component 16 has at least one slot-like recess 44 for receiving the at least one fine alignment element 34. In the assembled state, the fine alignment element 34 is at least partially received in the slot-like recess 44 (see Figure 5b). The slot-like recess 44 is arranged in the side plate 46. In the present case, the inner cooktop component 16 has four slot-like recesses 44 for receiving one of the four fine alignment elements 34 of the fastening device 20 (see Figure 3). In this case, one slot-like recess 44 is arranged on each side plate 46 of the inner cooktop component 16. The slot-like recesses 44 are not exclusively formed centrally in the side plates 46. In the present case, only one slot-like recess 44 is formed centrally in the side plate 46.The further slot-like recesses 44 are formed decentrally in the further side plates 46 (see Figure 6).

[0101] In the present case, the at least one side plate 46 has further recesses 90, 92 in addition to the slot-like recesses 44. At least one further recess 90 is provided for receiving the screw connection of a holding element 24. At least one further recess 92 is provided for receiving the upward stopper 66. In the present case, the cooktop housing 60 also has at least one circular recess 94 for receiving the upward stopper 66 in the stored state. The recess 92 and the recess 94 overlap, at least in the stored state, to accommodate the upward stopper 66.

[0102] Furthermore, the cooktop housing 60 has a substantially rectangular recess 70 on the side plate 82, which overlaps with the slot-like recess 44 in the stored state to accommodate the fine alignment element 34. The substantially rectangular recess 70 has a rectangular shape with rounded corners. The recess 70 has a larger recess area relative to the slot-like recess 44. The recess 70 does not affect a receiving area of ​​the slot-like recess 44 for the fine alignment element 34 in the stored state.

[0103] The cooktop device 12 has at least one heating element 42 arranged on the inner cooktop component 16. The heating element 42 is supported by the inner cooktop component 16. The heating element 42 is held in a form-fitting manner on the inner cooktop component 16 by means of fixing elements 98. With respect to a direction 48 (see Figure 2), the heating element 42 is fastened in the stored state to an upper side of the inner cooktop component 16. The heating element 42 is completely accommodated in the inner cooktop component 16. The heating element 42 has a center 36. The heating element 42 is designed here as a flat induction coil. The windings of the induction coil run concentrically around the center 36. There are no windings in the center 36 of the induction coil.

[0104] The cooktop device 12 further comprises at least one sensor 52 arranged on the inner cooktop component 16. The sensor 52 is positively attached to the inner cooktop component 16 (see Figure 6). In the present case, the sensor 52 is attached to a side of the inner cooktop component 16 opposite the heating element 42. In the stored state, the sensor 52 is attached to an underside of the inner cooktop component 16 with respect to a direction 48 (see Figure 2). Alternatively, it would be possible for the sensor 52 to be attached to the same side of the inner cooktop component 16 as the heating element 42. Furthermore, the sensor 52 is received in a recess 100 of the inner cooktop component 16. The recess 100 overlaps with the center 36 of the heating element 42 in the direction 48. The sensor 52 overlaps with the center 36 of the heating element 42 in the direction 48. In the present case, the sensor 52 is designed as an IR sensor.The sensor 52 measures a temperature of the installation unit 50 on the kitchen countertop 30 using at least infrared radiation. At least in the mounted state, the sensor 52 and the center 36 of the heating element 42 also overlap with the opening 54 in the kitchen countertop 30. Thus, infrared radiation can be transmitted along the direction 48 from and / or to the sensor 52 to and / or from the installation unit 50.

[0105] Figure 5a shows an assembled state of the cooktop system 10. In the assembled state, the fastening unit 18 is adhesively bonded to the kitchen worktop 30 (not shown). Furthermore, the cooktop device 12 is held by the holding elements 24 of the fastening unit 18. The cooktop device 12 is further aligned with the base support element 26 by means of the at least one coarse alignment element 32 and the at least one fine alignment element 34. The cooktop housing 60 is screwed to the base support element 26 by means of the holding elements 24. The holding element 24 in the stepped configuration 74 also has a support element 62. The cooktop device 12 rests on the support element 62. The support element 62 is in direct contact with the base plate 84 of the cooktop housing 60. The support element 62 is designed here as a screw with a handle (see Figure 2).The hob device 12 is positively received in the holding element 24 with the step-shaped configuration 74.

[0106] Figure 5b shows an enlarged portion of Figure 5a and illustrates the alignment of the cooktop device 12 by means of the at least one coarse alignment element 32 and the at least one fine alignment element 34. The at least one coarse alignment element 32 defines a position of the outer cooktop component 14 in the assembled state. The at least one coarse alignment element 32 contacts an outer surface of the side panel 82 of the cooktop housing 60. The fine alignment element 34 is at least partially received in a form-fitting manner in the slot-shaped recess 44. The fine alignment element 34 is at least partially received in the recess 70 of the side panel 82 of the cooktop housing 60.

[0107] The at least one fine alignment element 34 permits thermal expansion of the inner cooktop component 16 in at least one assembled state in a direction 38. In this case, the direction 38 is configured as a main extension direction of the fine alignment element 34. Upon thermal expansion, the inner cooktop component 16 can expand along the direction 38 by means of the slot-shaped recesses 44. The inner cooktop component 16 can expand within the cooktop housing 60. The inner cooktop component 16 can expand within the cooktop housing 60 until it reaches the side plate 46 of the inner cooktop component 16 on the side plate 82 of the cooktop housing 60. In the stored state, outside of an operating state of the heating element 42, there is a distance of 1 mm between the side plate 46 of the inner hob component 16 and the side plate 82 of the hob housing 60.The fastening device 20 has at least one further fine alignment element which, together with the at least one fine alignment element 34, defines a central point 40 of the inner cooktop component 16 in an assembled state, said central point having a temperature-independent position relative to the fastening unit 18. In the assembled state, the central point 40 is formed at a midpoint of the distance between the four fine alignment elements 34 on the inner cooktop component 16. Figure 6 shows an upper side of the inner cooktop component 16. The central point 40 is formed at a midpoint of the distance between the four slot-like recesses 44 of the inner cooktop component 16 associated with the four fine alignment elements 34 in the assembled state. The central point 40 is formed at an intersection point of connecting lines 104 between the slot-like recesses 44.The central point 40 also has a temperature-independent position relative to the kitchen worktop 30. The central point 40 thus also has a temperature-independent position relative to the opening 54 in the kitchen worktop 30.

[0108] In an assembled state, the central point 40 is arranged to overlap with a center 36 of the heating element 42 at least in one direction 48 (see Figure 2). The center 36 of the heating element 42 thus has a temperature-independent position with respect to the opening 54 in the kitchen worktop 30. Additionally, it would be possible for the central point 40 to be arranged to overlap with the sensor 52. The sensor 52 would thus have a temperature-independent position with respect to the opening 54 in the kitchen worktop 30. Furthermore, it would be possible for the central point 40 to overlap with the recess 100 in the inner cooktop component 16. The recess 100 would thus have a particularly temperature-independent position with respect to the opening 54 in the kitchen worktop 30. In the present case, the sensor 52 and the recess 100 do not overlap with the central point 40.However, the sensor 52 and the recess 100 are located with respect to the direction 48 in the present case in a vicinity of the central point 40, which is limited by the center 36 of the heating element 42.

[0109] Figure 7 shows the hob system 10 during an assembly step 110. The

[0110] Assembly step 110 comprises at least one step for inserting the cooktop device 12 into the fastening unit 18 of the fastening device 20. During insertion, the cooktop device 12 is placed into the at least one holding element 24, in this case two holding elements 24, with the stepped configuration 74. The cooktop device 12 is pushed laterally along a direction 102 into the holding element 24 with the stepped configuration 74. The direction 102 is parallel to the main extension direction 72 of the base support element 26 (see Figure 3a). In this case, the plane 22 is not arranged parallel to the main extension plane 28 of the fastening device 20. During the insertion step, the outer side panels 82 of the cooktop housing 60 abut at least one, in this case four, coarse alignment elements 34, whereby a first coarse alignment takes place.The cooktop device 12 is then moved in the direction 80 opposite the direction of gravity, so that all side plates 82 of the cooktop housing 60 are in contact with the fastening device 20 (see Figure 5a). Simultaneously, the outer cooktop component 14 is aligned using two additional coarse alignment elements 32. Meanwhile, a fine alignment of the inner cooktop component 16 takes place using the four fine alignment elements 34 in this case. The inner cooktop component 16 moves along the plane 22 by means of the at least partially movable mounting in the outer cooktop component 14 (see Figure 2). All side plates 82 of the cooktop housing are in contact with the base support element 26 as soon as all fine alignment elements 34 are received in the slot-shaped recesses 44 (see Figure 5b).

[0111] Figure 8 shows a schematic sequence of a method for installing the cooktop system 10. The method comprises a method step 108 for fixing the fastening device 20 to the underside of the kitchen worktop 30, in this case by means of an adhesive process. In at least one assembly step, in this case assembly step 110, the cooktop device 12 is aligned to the fastening device 20 by means of at least one coarse alignment element 32, wherein an inner cooktop component 16 of the cooktop device 12 is automatically aligned to the fastening device 20 by means of at least one fine alignment element 34. Method step 110 follows method step 108. In a further method step 112, the cooktop device 12 is fixed to the fastening unit 18, in particular by means of screw connections. Method step 112 takes place chronologically after method step 110. Reference numeral

[0112] 10 Hob system

[0113] 12 Hob device

[0114] 14 External hob component

[0115] 16 Internal hob component

[0116] 18 Mounting unit

[0117] 20 Fastening device

[0118] 22 Main extension plane fastening device

[0119] 24 Holding element

[0120] 26 Base support element

[0121] 28 Level

[0122] 30 kitchen worktop

[0123] 32 Coarse alignment element

[0124] 34 Fine alignment element

[0125] 36 Center of the heating element

[0126] 38 direction

[0127] 40 Central Point

[0128] 42 Heating element

[0129] 44 recess

[0130] 46 Side panel of the inner hob component

[0131] 48 direction

[0132] 50 installation unit

[0133] 52 Sensor

[0134] 54 Opening

[0135] 56 cooking surface area

[0136] 58 Support element

[0137] 60 hob housings

[0138] 62 support element

[0139] 64 Marginal area

[0140] 66 Upward stopper symmetry axis

[0141] recess

[0142] Main direction of extension of the base support element

[0143] Stepped design

[0144] Screw-shaped design

[0145] recess

[0146] Direction

[0147] Side panel of the hob housing

[0148] Base plate of the hob housing

[0149] Support surface

[0150] recess

[0151] recess

[0152] recess

[0153] Base plate of the inner hob component

[0154] Fixing element

[0155] recess

[0156] Direction

[0157] connecting line

[0158] User interface

[0159] Gluing step

[0160] Insertion and alignment step

[0161] Fixing step

Claims

Claims 1. Hob system (10) with a hob device (12) which has an outer hob component (14) and an inner hob component (16), and with a fastening device (20) which is provided for fixing to an underside of a kitchen worktop (30) and which has a fastening unit (18) for holding at least the hob device (12), wherein the inner hob component (16) is mounted at least partially movably in the outer hob component (14).

2. Hob system (10) according to claim 1, characterized in that the inner hob component (16) is mounted in a plane (28) parallel to a main extension plane (22) of the fastening device (20) in a partially movable manner in the outer hob component (14).

3. Hob system (10) according to claim 1, characterized in that the fastening unit (18) has at least one holding element (24) and a plate-like base support element (26).

4. Hob system (10) according to claim 1, characterized in that the fastening device (20) has at least one coarse alignment element (32), which is designed in particular as an alignment edge, for a coarse alignment of the outer hob component (14) with respect to the fastening unit (18).

5. Hob system (10) according to claims 3 and 4, characterized in that the at least one coarse alignment element (32) is integrally connected to the base support element (26).

6. Hob system (10) according to claim 1, characterized in that the fastening device (20) has at least one fine alignment element (34), which is designed in particular as an alignment bridge, for a fine alignment of the inner hob component (16) with respect to the fastening unit (18).

7. Hob system (10) according to claims 3 and 6, characterized in that the at least one fine alignment element (34) is integrally connected to the base support element (26).

8. Hob system (10) according to claim 6, characterized in that the inner hob component (16) has at least one slot-like recess (44) for receiving the at least one fine alignment element (34).

9. Hob system (10) according to claim 6, characterized in that in at least one assembled state, the at least one fine alignment element (34) allows thermal expansion of the inner hob component (16) in one direction (38).

10. Hob system (10) according to claim 6, characterized in that the fastening device (20) has at least one further fine alignment element which, together with the at least one fine alignment element (34) in an assembled state, defines a central point (40) of the inner hob component (16) which has a temperature-independent position with respect to the fastening unit (18).

11. Hob system (10) according to one of the preceding claims, characterized in that the hob device (12) has at least one heating element (42) arranged on the inner hob component (16).

12. Hob system (10) according to one of the preceding claims, characterized in that the hob device (12) has at least one sensor (52) arranged on the inner hob component (16).

13. Hob system according to claims 10 to 12, characterized in that in an assembled state, the central point (40) is arranged to overlap with a center (36) of the heating element (42) and / or the sensor (52) and / or an opening (54) in the kitchen worktop (30) at least in one direction (48). Hob device (12) of a hob system (10) according to one of the preceding claims. Method for installing a hob system (10) according to one of claims 1 to 13, characterized in that the hob device (12) is aligned to the fastening device (20) in at least one assembly step (110) by means of at least one coarse alignment element (32), wherein an inner hob component (16) of the hob device (12) is automatically aligned to the fastening device (20) by means of at least one fine alignment element (34).

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