Hob and hob device

Abstract

The invention relates to a hob device (12), in particular an induction hob device , comprising at least one first heating unit (14) having at least two first heating elements (16, 18), comprising at least one second heating unit (20) having at least one second heating element (26), comprising a first current supply unit (28) which is provided for supplying current to the first heating unit (14) and for being permanently connected to a first current phase (30) of a current supply network, and comprising a second current supply unit (32) which is provided for supplying current to the second heating unit (20) and for being permanently connected to a second current phase (34) of the current supply network. In order to provide a generic device with improved properties in terms of efficiency, according to the invention, at least the second heating element (26) is arranged between the at least two first heating elements (16, 18).

Description

[0001] Hob and hob device

[0002] State of the art

[0003] The invention relates to a hob device according to the preamble of claim 1 and a hob according to claim 13.

[0004] A hob device is already known from the prior art, comprising at least one heating unit with a plurality of heating elements, wherein at least one heating element of the plurality of heating elements is operable with power from a power phase of a power supply network. It has already been proposed that the plurality of heating elements comprise at least one further heating element, which, depending on the heating requirements of a mounting unit, can be flexibly operated with power from the same power phase of the power supply network as the aforementioned heating element or with power from a further power phase of the power supply network.

[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 and 13, while advantageous embodiments and further developments of the invention can be found in the subclaims.

[0006] Advantages of the invention

[0007] The invention is based on a hob device, in particular an induction hob device, with at least one first heating unit which comprises at least two first heating elements, with at least one second heating unit which comprises at least one second heating element, with a first power supply unit which is provided for supplying power to the first heating unit and for permanently connecting it to a first current phase of a power supply network, and with a second power supply unit which is provided for supplying power to the second heating unit and for permanently connecting it to a second current phase of the power supply network. It is proposed that at least the second heating element is arranged between the at least two first heating elements.

[0008] Such a configuration can provide a particularly efficient and / or compact design of a cooktop device. Furthermore, efficiency can be increased in terms of cost and / or performance and / or operating efficiency. By means of such an arrangement of heating elements, a "superboost" heating function for at least one installation unit can be enabled in an efficient manner, namely cost-effectively and / or compactly and / or simply and / or with a saving in material and / or component count. Furthermore, flexibility can be improved with regard to possible installation configurations for at least the installation unit.

[0009] In particular, the hob device is a part, specifically a subassembly, of a hob. The hob device could be designed at least partially as a resistance hob device and / or preferably as an induction hob device. The hob device can additionally also comprise accessory units for the hob, such as a sensor unit for detecting the installation unit and / or externally measuring a temperature of an installation unit and / or a food item. It would also be conceivable for the hob device to comprise the entire hob. The hob is preferably designed as an induction hob. The hob device and / or the hob is / are intended for use and / or arrangement in a household, in particular a kitchen.The hob could in turn be part of a hob system, wherein the hob system could comprise a plurality of units and / or devices that can be used for preparing and / or processing food. For example, the hob 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 installation unit and / or in the food to be cooked, for example in the form of a roasting spit. Alternatively, the hob device can also be designed as a kit and / or an assembly for different types of hobs, which can differ from one another, in particular with regard to the number of inductors and / or size.

[0010] The hob may have at least one support plate. In particular, the support plate is designed as a plate-like unit, which is intended for supporting at least the support unit and / or for placing at least one food item, in particular the food to be cooked. The support plate could, for example, be designed as a worktop, in particular as a kitchen worktop, or as a partial region of at least one worktop, in particular at least one kitchen worktop, in particular of the hob system. Alternatively and / or additionally, the support plate could be designed as a hob plate.The installation plate designed as a hob plate could in particular form at least part of a hob outer housing and advantageously form the hob outer housing at least to a large extent together with at least one outer housing unit, to which the installation plate designed as a hob plate could in particular be connected in at least one assembled state. The installation plate is preferably made of a non-metallic material. The installation plate could be formed at least partially or at least to a large extent from glass and / or glass ceramic 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 term "to a large extent" is 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 assembled state of the mounting plate, unless explicitly stated otherwise.

[0011] The installation unit can comprise a small household appliance and / or the cooking utensil. The small household appliance could, for example, be a coffee machine and / or a toaster and / or a kettle and / or a blender and / or a stirrer. In particular, the small household appliance is portable and / or can be flexibly positioned and / or arranged relative to the hob. Advantageously, the small household appliance could be supplied with energy at least partially inductively when placed on the installation plate. The cooking utensil can, for example, be designed as a pot and / or pan and / or roasting pan. If the hob device is designed as an induction hob device, the installation unit could be supplied with energy at least partially inductively when placed on the installation plate, at least for heating purposes. 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 installation plate and the cooking utensil and / or the small household appliance. In particular, the installation unit can be arranged on the installation plate in a cooking surface area of ​​the hob. Preferably, the cooking surface area is designed at least partially and preferably completely as a variable cooking surface area. A “variable cooking surface area” should be understood to mean a cooking surface area that is intended 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 and / or the base unit. The variable cooking surface area advantageously differs from a cooking surface in which heating zones are fixedly predetermined, in particular by markings on the cooking surface.

[0012] At least the first heating unit and / or at least the second heating unit can be provided for heating the installation unit in the cooking surface area in at least one operating state. Advantageously, the first heating unit is designed as a first induction heating unit and the at least two first heating elements as at least two first inductors. Preferably, the second heating unit is designed as a second induction heating unit and the second heating element as at least one second inductor. A “heating unit” is to be understood as a unit which is provided, at least in one operating state, to transfer at least a large part 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 provided 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 at least one power supply unit of the hob device. An “inductor” is to be understood here as an element which has at least one induction coil and / or is designed as an induction coil and which is provided 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 base 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 caused by the inductor, which are converted into heat. Alternatively or additionally, the installation unit could have at least one secondary coil as a receiving element for receiving the energy provided by the inductor and / or another inductor.

[0013] Preferably, the first power supply unit, which is permanently connected to the first power phase of the power supply network when the hob is in the assembled state, is provided exclusively for supplying power to the first heating unit. In particular, in the assembled state and in at least one operating state, the first power supply unit supplies the first heating unit with power from the first power phase. Advantageously, the second power supply unit, which is permanently connected to the second power phase of the power supply network when the hob is in the assembled state, is provided exclusively for supplying power to the second heating unit. In particular, in the assembled state and in at least one operating state, preferably in at least the operating state already mentioned, the second power supply unit supplies the second heating unit with power from the second power phase.The power phases of the power grid mentioned above are individual phases of a conventional power grid used to supply households, preferably German households. In particular, the electrical power per power phase, especially the first power phase and / or the second power phase, is limited.

[0014] It would be conceivable for the hob device to have additional heating units, namely at least a third heating unit and at least a third power supply unit for supplying power to the third heating unit. The third power supply unit could supply the third heating unit with power from the first power phase and / or the second power phase and / or at least one third power phase of the power supply network and, in particular, be provided for permanent connection to the first power phase and / or the second power phase and / or the third power phase.

[0015] The second heating element of the second heating unit could also be referred to as an intermediate heating element. In particular, the second heating element is provided to heat at least an area between the at least two first heating elements of the first heating unit. Advantageously, the second heating element is arranged directly between the two first heating elements. Preferably, the at least two first heating elements are arranged next to the second heating element. The second heating element could be arranged at least partially spaced from at least one of the two first heating elements. For example, a distance between the second heating element and at least one of the first heating elements could be at least 1 mm, advantageously at least 10 mm and advantageously at least 30 mm. Alternatively, it would also be conceivable for the second heating element to be arranged at least partially flush with at least one of the first heating elements.

[0016] The at least two first heating elements of the first heating unit could differ with regard to an intended power consumption and / or an intended power output and / or with regard to their design, for example geometry and / or size. Preferably, the at least two heating elements of the first heating unit are designed identically to one another. Furthermore, the second heating element of the second heating unit could differ from at least one of the at least two first heating elements, advantageously from the two first heating elements, for example with regard to an intended power consumption and / or an intended power output and / or with regard to a design, for example geometry and / or size. Preferably, the second heating element is designed identically to at least one of the at least two first heating elements, advantageously to the two first heating elements.In this context, the term "identical objects" refers to objects that advantageously have the same structure and / or shape and / or outer contour and / or design and / or at least largely and preferably completely the same material composition, but may differ at least partially in terms of their functionality, their internal structure, their arrangement on another object, and / or their orientation relative to another object. However, the identical objects are preferably identical apart from manufacturing tolerances and / or within the range of standardized tolerances.

[0017] The second heating element and at least one of the first heating elements could each be aligned with their longitudinal sides preferably parallel to one another and arranged next to one another, in particular in the case where the heating elements each have a rectangular outer contour in a plan view. Furthermore, at least one longitudinal side of the second heating element could face a narrow and / or wide side of at least one of the first heating elements. Preferably, a long side of the second heating element is aligned parallel to a long side of at least a first of the first heating elements, and preferably a further long side of the second heating element opposite the long side is aligned parallel to a narrow and / or wide side of at least a second of the first heating elements.

[0018] In this document, numerals such as "first" and "second," which precede certain terms, serve only to differentiate between objects and / or to associate objects with one another and do not imply a total number and / or ranking of the objects. In particular, a "second" object does not necessarily imply the presence of a "first" object. Furthermore, "intended" here and below 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.

[0019] It is further proposed that at least one of the first heating elements and the second heating element be provided for jointly heating at least one installation unit in at least one operating mode. This can increase efficiency with regard to heating at least one installation unit, specifically a "superboost" mode. This, in turn, can enhance user-friendliness and / or user comfort and / or user experience.

[0020] Advantageously, the installation unit is the installation unit already mentioned. In particular, at least the operating mode is part of an operating state, preferably the operating state already mentioned. The aforementioned operating mode is preferably a "superboost" operating mode. In the "superboost" operating mode, an available heating output of at least 3700 W, advantageously at least 4000 W, and particularly preferably at least 4500 W can be provided for at least the installation unit. In the "superboost" operating mode, the available outputs per power phase of the power supply network, namely the first power phase and at least the second power phase, can be combined with one another to heat the installation unit.

[0021] Furthermore, it is proposed that the first power supply unit has at least one first rectifier and the second power supply unit has at least one second rectifier. This can increase efficiency in terms of work efficiency, cost efficiency, operating efficiency, power efficiency, and / or heating efficiency. The first rectifier and the second rectifier could be designed differently. Preferably, the two rectifiers are designed identically to one another, regardless of manufacturing tolerances.

[0022] To prevent overheating of at least the first rectifier, it is proposed that the first power supply unit have at least one further first rectifier which is connected in parallel with the first rectifier. This makes it possible to dispense with cost-intensive and / or complex rectifiers and to increase efficiency with regard to work and / or operation and / or power and / or heating and / or cost efficiency. Furthermore, this can optimize the design of a cooktop device. To prevent overheating of at least the second sliding rectifier, the second power supply unit advantageously has at least one further second rectifier which is connected in parallel with the second rectifier.

[0023] Preferably, the first power supply unit comprises at least one first inverter unit with at least two first inverters, each of which is connected to the first rectifier. This can increase efficiency with regard to wiring and / or control and / or power supply.

[0024] In particular, the first inverter unit forms a totality of all first inverters. An "inverter" is to be understood as a unit which, in at least one operating state, in particular at least one operating mode, provides an alternating current, in particular a high-frequency one, in particular with a frequency of at least 10 kHz, preferably of at least 20 kHz, and in particular of a maximum of 100 kHz, for at least one further unit, preferably for at least one of the heating units of the cooktop device, advantageously the first heating unit and / or the second heating unit. In particular, the inverter can have at least two inverter switching elements. An "inverter switching element" is to be understood as an element which is intended to establish and / or break an electrically conductive connection between two points, in particular contacts of the switching element.The switching element preferably has at least one control contact via which it can be switched. In particular, the switching element is designed as a semiconductor switching element, in particular as a transistor, for example as a metal oxide semiconductor field-effect transistor (MOSFET) or organic field-effect transistor (OFET), advantageously as a bipolar transistor with preferably an insulated gate electrode (IGBT). Furthermore, the inverter switching elements can be formed at least partially from a semiconductor material, such as silicon, silicon carbide and / or gallium nitride and / or from another semiconductor material that appears appropriate to a person skilled in the art. Alternatively, it is conceivable for the inverter switching element to be designed as a mechanical and / or electromechanical switching element, in particular as a relay.

[0025] Preferably, the at least two first inverters perform a frequency conversion in the operating state and, in particular, convert a low-frequency AC voltage on the input side into a high-frequency AC voltage on the output side. In particular, the low-frequency AC voltage has a frequency of at most 100 Hz. Preferably, the high-frequency AC voltage has a frequency of at least 1000 Hz. The first inverter unit can be connected to a control unit of the cooktop device and can be controlled by the control unit using control signals.

[0026] It is further proposed that the second power supply unit comprise at least one second inverter unit with at least one second inverter, which is connected to the second rectifier. This can further increase efficiency with regard to wiring and / or control and / or power supply. In the operating state, the second inverter preferably carries out a frequency conversion and, in particular, converts a low-frequency alternating voltage on the input side into a high-frequency alternating voltage on the output side. In particular, the low-frequency alternating voltage has a frequency of at most 100 Hz. Preferably, the high-frequency alternating voltage has a frequency of at least 1000 Hz. The second inverter unit can be connected to the control unit and controllable by the control unit using control signals. Advantageously, the second heating element is connected to the second inverter.

[0027] It would be conceivable for the at least two first heating elements to be connected to the same inverter of the first inverter unit, specifically jointly with at least one of the at least two first inverters. If each heating element of the first heating unit is separately connected to an inverter of the first inverter unit, a particularly efficient wiring and / or control and / or power supply can be provided. Furthermore, maintenance and / or replacement of components can be optimized and / or simplified.

[0028] Advantageously, a first heating element of the two first heating elements is connected to a first inverter of the two first inverters. A second heating element of the two first heating elements can be connected to a second inverter of the two first inverters. Furthermore, the second inverter unit can comprise further second inverters, specifically at least one further second inverter, in particular if the second heating unit has further second heating elements, specifically at least one further second heating element. Each heating element of the second heating unit can be separately connected to an inverter of the second inverter unit. In particular, the second inverter unit forms a totality of all second inverters.

[0029] In order to make a construction as well as a wiring and / or arrangement of electronic components more efficient, it is proposed that the hob device comprises at least a first power board on which the first power supply unit is arranged, and a second power board on which the second power supply unit is arranged.

[0030] A “power board” is understood to mean a carrier for electrical and / or electronic components. At least the first inverter unit and at least the first slide converter are arranged on the first power board. The first power board can also have further units and / or elements, in particular of the first power supply unit, for example switching elements and / or electrical resistors and / or AC power controllers and / or capacitors and / or the like. At least the second inverter unit and at least the second slide converter are arranged on the second power board. The second power board can also have further units and / or elements, in particular of the second power supply unit, for example switching elements and / or electrical resistors and / or AC power controllers and / or capacitors and / or the like.Furthermore, it is proposed that the first heating unit have a plurality of further first heating elements, wherein at least one of the first heating elements is arranged with the further first heating elements in a first row. This can increase flexibility in the positioning of installation units as well as efficiency in heating installation units. Preferably, at least the first row forms a flexible heating zone for at least the installation unit. The plurality of further first heating elements can, for example, be at least two further first heating elements, advantageously at least three further first heating elements and preferably at least five further first heating elements.The first row can consist of and / or be composed of at least three first heating elements of the first heating unit, advantageously at least four first heating elements of the first heating unit, and preferably at least five first heating elements of the first heating unit. The first row is preferably formed from at least one of the first heating elements and at least three further first heating elements.

[0031] It is further proposed that the second heating unit comprise a plurality of further second heating elements, wherein at least one of the first heating elements is arranged between the second heating element and at least one further second heating element of the plurality of further second heating elements. This further increases the flexibility in positioning the installation units and the efficiency of heating the installation units. By means of such an arrangement of heating elements, a "superboost" heating function for at least one installation unit can be enabled in an efficient manner, namely cost-effectively and / or compactly and / or simply and / or with a saving in material and / or component count.

[0032] At least one of the first heating elements, which is arranged between the second heating element and at least the further second heating element of the plurality of second heating elements, could also be referred to as an intermediate heating element. Advantageously, the at least one heating element of the first heating elements is arranged directly between the second heating element and the further second heating element. Preferably, at least two further heating elements of the plurality of further second heating elements are arranged next to the at least one heating element of the first heating elements. At least one heating element of the first heating elements could be arranged at least partially spaced from the second heating element and / or at least the further second heating element.For example, a distance between the second heating element and / or at least the further second heating element and the at least one heating element of the first heating elements could be at least 1 mm, advantageously at least 10 mm, and advantageously at least 30 mm. Alternatively, it would also be conceivable for the at least one heating element of the first heating elements to be arranged at least partially flush with the second heating element and / or at least the further second heating element.

[0033] The at least one heating element of the first heating elements and the second heating element could each be aligned with their longitudinal sides preferably parallel to one another and arranged next to one another, in particular in the case where the heating elements each have a rectangular outer contour in a plan view. Furthermore, at least one longitudinal side of the at least one heating element of the first heating elements could face a narrow and / or wide side of the further second heating element. Preferably, one longitudinal side of the at least one heating element of the first heating elements is aligned parallel to a long side of the second heating element, and preferably, a further long side of the at least one heating element of the first heating elements opposite the long side is aligned parallel to a narrow and / or wide side of the further second heating element.

[0034] The plurality of further second heating elements can, for example, be at least two further second heating elements, advantageously at least three further second heating elements and preferably at least five further second heating elements. It is further proposed that the plurality of further second heating elements be arranged in a second row. This can further increase flexibility in the positioning of installation units and efficiency in the heating of installation units. Preferably, at least the second row forms a flexible heating zone for at least the installation unit. The second row can consist of and / or be composed of at least three further second heating elements of the second heating unit, advantageously at least four further second heating elements of the second heating unit and preferably at least five further second heating elements of the second heating unit.

[0035] Furthermore, it is proposed that the first row and the second row be aligned parallel to each other, and that at least one second heating element be arranged between the two rows. This enables and / or provides a compact and efficient arrangement of heating elements and heating of installation units.

[0036] At least one of the first heating elements and at least the second heating element are arranged in a region between the first row and the second row. Preferably, one of the first heating elements and at least the second heating element are arranged parallel to one another. "Parallel" is understood to mean an alignment of a direction relative to a reference direction, in particular in a plane, wherein the direction has a deviation from the reference direction of less than 8°, advantageously less than 5°, and particularly advantageously less than 2°.

[0037] The cooktop device and / or the cooktop should not be limited to the application and embodiment described above. In particular, the cooktop device and / or the cooktop may have a number of individual elements, components, units, and method steps that differs from the number stated herein to fulfill a function 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.

[0038] Drawings

[0039] Further advantages will become apparent from the following description of the drawings. The drawings illustrate an exemplary embodiment 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.

[0040] They show:

[0041] Fig. 1 shows a hob with a hob device designed as an induction hob device,

[0042] Fig. 2 is a plan view of a mounting plate of the hob to illustrate an arrangement of a first heating unit and a second heating unit of the hob device below the mounting plate, Fig. 3 is a possible positioning of a mounting unit for heating by means of the first heating unit and the second heating unit,

[0043] Fig. 4 another possible positioning of the installation unit,

[0044] Fig. 5 shows another possible positioning of the installation unit and

[0045] Fig. 6 is a schematic electrical diagram of the hob device, with a first power supply unit and a second power supply unit.

[0046] Description of the embodiment

[0047] The following figures are schematic representations and not to scale. Unless otherwise indicated, only one of the objects shown is provided with a reference symbol.

[0048] Figure 1 shows a hob 10 designed as an induction hob. The hob 10 comprises a base plate 38 on which at least one support unit 36 ​​can be set up and / or arranged. In this exemplary embodiment, the support unit 36 ​​is designed as a cooking utensil. Alternatively and / or additionally, the support unit 36 ​​can be designed as a small household appliance and / or as a base unit. The support unit 36 ​​can be arranged on the base plate 36 in a cooking surface area 92 of the hob 10. In the present case, the cooking surface area 92 is a variable cooking surface area. Furthermore, the hob 10 has at least one user interface 90 for control and / or operation by at least one operator and / or for outputting and / or inputting information and / or operating parameters to and / or from the operator. The hob 10 has a cooking surface device 12.The hob device 12 is designed as an induction hob device.

[0049] To heat at least the installation unit 36, the cooktop device 12 has at least a first heating unit 14 and at least one second heating unit 20. The arrangements of the first heating unit 14 and the second heating unit 20 are shown in Figures 2 to 6, respectively. The first heating unit 14 has at least two first heating elements 16, 18. In the present case, the first heating unit 14 has a plurality of further first heating elements 56, wherein at least one of the first heating elements 16, 18 is arranged with the further first heating elements 56 in a first row 66. In this case, the second first heating element 18 is arranged with the further first heating elements 56 in the first row 66.

[0050] The second heating unit 20 has at least one second heating element 26. At least the second heating element 26 is arranged between the at least two first heating elements 16, 18. Furthermore, the second heating unit 20 has a plurality of further second heating elements 76, wherein at least one of the first heating elements 16, 18 is arranged between the second heating element 26 and at least one further second heating element 76 of the plurality of further second heating elements 76. In the present case, the first heating element 16 is arranged between the second heating element 26 and at least one further second heating element 76 of the plurality of further second heating elements 76. The plurality of further second heating elements 76 are arranged in a second row 68. In this exemplary embodiment, the first row 66 and the second row 68 are aligned parallel to one another. The at least second heating element 26 is arranged between the two rows 66, 68.Furthermore, the first heating element 16 of the at least two first heating elements 16, 18 is arranged together with the second heating element 26 between the two rows 66, 68. The second heating element 26 and the first heating element 16 of the at least two first heating elements 16, 18 are arranged side by side.

[0051] All heating elements 16, 18, 56 of the first heating unit 14 are identical to one another. Furthermore, all heating elements 26, 76 of the second heating unit 20 are identical to one another. In the present case, all heating elements 16, 18, 56 of the first heating unit 14 are identical to all heating elements 26, 76 of the second heating unit 20, specifically with regard to at least one size and / or shape and / or geometry.

[0052] Figure 6 shows a schematic electrical circuit diagram of the cooktop device 12. The cooktop device 12 has a first power supply unit 28, which is provided for supplying power to the first heating unit 14 and for permanent connection to a first power phase 30 of a power supply network. To supply power to the second heating unit 20, the cooktop device 12 has a second power supply unit 32. The second power supply unit 32 is provided for permanent connection to a second power phase 34 of the power supply network. The aforementioned power phases 30, 34 of the aforementioned power supply network are individual phases of a conventional power supply network for supplying households, preferably German households.

[0053] The cooktop device 12 has at least a first power board 80, on which the first power supply unit 28 is arranged. Furthermore, the cooktop device 12 has a second power board 82, on which the second power supply unit 32 is arranged.

[0054] The first power supply unit 28 has at least one first rectifier 50, and the second power supply unit 32 has at least one second rectifier 52. In this exemplary embodiment, the first power supply unit 28 has at least one further first rectifier 50', which is connected in parallel with the first rectifier 50, to prevent overheating of at least the first rectifier 50. The second power supply unit 32 has at least one further second rectifier 52', which is connected in parallel with the second rectifier 52, to prevent overheating of at least the second rectifier 52. Alternatively, only one rectifier 50, 52 could be present per power supply unit 28, 32.

[0055] Figure 6 illustrates that the first power supply unit 28 comprises at least one first inverter unit 60 with at least two first inverters 62, 64, each of which is connected to the first rectifier 50. The first inverter unit 60 has further first inverters 100, 102, 104. In the present case, the first inverter unit 60 comprises exactly as many first inverters as the first heating unit 14 has first heating elements. Each heating element 16, 18, 56 of the first heating unit 14 is separately connected to its own first inverter 62, 64, 100, 102, 104 of the first inverter unit 60. The first inverter unit 60 forms the entirety of all first inverters 62, 64, 100, 102, 104.

[0056] The second power supply unit 32 has at least one second inverter unit 70 with at least one second inverter 72, which is connected to the second rectifier 52. The second inverter unit 70 has further second inverters 106, 108, 110. In the present case, the second inverter unit 72 comprises exactly as many second inverters as the second heating unit 20 has second heating elements. Each heating element 26, 76 of the second heating unit 20 is separately connected to its own second inverter 72, 106, 108, 110 of the second inverter unit 72. The second inverter unit 72 forms the entirety of all second inverters 72, 106, 108, 110.

[0057] Figures 3 to 5 show possible installation positions of installation units 36 on the installation plate 38. In at least one operating mode, specifically in at least one "superboost" operating mode, at least one heating element 16, 18 of the first heating elements 16, 18 and at least the second heating element 26 are provided for joint heating of at least the installation unit 36. Due to a known power limitation per power phase 30, 34 of the power supply network, more efficient heating of the installation unit 36 ​​can be provided by combining the power from the at least two power phases 30, 34, and thus the installation unit 36 ​​can be heated in the "superboost" operating mode.

[0058] Reference symbol

[0059] 10 hob

[0060] 12 Hob device

[0061] 14 Heating unit

[0062] 16 heating elements

[0063] 18 heating elements

[0064] 20 heating unit

[0065] 26 Heating element

[0066] 28 Power supply unit

[0067] 30 current phase

[0068] 32 Power supply unit

[0069] 34 current phase

[0070] 36 Installation unit

[0071] 38 mounting plate

[0072] 50 rectifiers

[0073] 52 rectifiers

[0074] 56 Heating element

[0075] 60 inverter unit

[0076] 62 inverters

[0077] 64 inverters

[0078] 66 row

[0079] 68 row

[0080] 70 inverter unit

[0081] 72 inverters

[0082] 76 Heating element

[0083] 80 power board

[0084] 82 power board

[0085] 90 Operator interface

[0086] 92 cooking surface area

[0087] 100 inverters inverters inverters inverters inverters inverters

Claims

Claims Hob device (12), in particular induction hob device, with at least one first heating unit (14) which comprises at least two first heating elements (16, 18), with at least one second heating unit (20) which comprises at least one second heating element (26), with a first power supply unit (28) which is provided for supplying power to the first heating unit (14) and for permanently connecting it to a first power phase (30) of a power supply network, and with a second power supply unit (32) which is provided for supplying power to the second heating unit (20) and for permanently connecting it to a second power phase (34) of the power supply network, characterized in that at least the second heating element (26) is arranged between the at least two first heating elements (16, 18).Hob device (12) according to claim 1, characterized in that at least one heating element (16, 18) of the first heating elements (16, 18) and the second heating element (26) are provided for jointly heating at least one installation unit (36) in at least one operating mode. Hob device (12) according to claim 1 or 2, characterized in that the first power supply unit (28) has at least one first rectifier (50) and the second power supply unit (32) has at least one second rectifier (52). Hob device (12) according to claim 3, characterized in that the first power supply unit (28) has at least one further first rectifier (50') connected in parallel to the first rectifier (50) to prevent overheating of at least the first rectifier (50).

5. Hob device (12) according to claim 3 or 4, characterized in that the first power supply unit (28) comprises at least one first inverter unit (60) with at least two first inverters (62, 64), which are each connected to the first rectifier (50).

6. Hob device (12) according to one of claims 3 to 5, characterized in that the second power supply unit (32) comprises at least one second inverter unit (70) with at least one second inverter (72), which is connected to the second rectifier (52).

7. Hob device (12) according to claim 5 or 6, characterized in that each heating element (16, 18) of the first heating unit (14) is separately connected to an inverter (62, 64) of the first inverter unit (60).

8. Hob device (12) according to one of the preceding claims, characterized by at least a first power board (80) on which the first power supply unit (28) is arranged, and a second power board (82) on which the second power supply unit (32) is arranged.

9. Hob device (12) according to one of the preceding claims, characterized in that the first heating unit (14) has a plurality of further first heating elements (56), wherein at least one of the first heating elements (16, 18) is arranged with the further first heating elements (56) in a first row (66).

10. Hob device (12) according to one of the preceding claims, characterized in that the second heating unit (20) has a plurality of further second heating elements (76), wherein at least one of the first heating elements (16, 18) is arranged between the second heating element (26) and at least one further second heating element (76) of the plurality of further second heating elements (76). Hob device (12) according to claim 10, characterized in that the plurality of further second heating elements (76) are arranged in a second row (68). Hob device (12) according to claims 9 to 11, characterized in that the first row (66) and the second row (68) are aligned parallel to one another and the at least one second heating element (26) is arranged between the two rows (66, 68). Hob (10), in particular an induction hob, with a hob device (12) according to one of the preceding claims.

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