GAR SYSTEM

Description

[0001] The invention relates to a cooking system according to the preamble of claim 1.

[0002] International patent application WO 2016 / 185303 A1 discloses a cooking system with a mounting unit comprising a food receiving element and a heating unit. The heating unit is integrated into a housing unit of the mounting unit, which is integrally formed with the food receiving element. The housing unit also integrates a receiving unit that receives a portion of the heating energy provided by an induction unit and supplies the heating unit with a portion of this received energy. The heating unit is designed as an induction unit and is intended for inductive heating of the food receiving element. In one operating state, the food receiving element is heated exclusively by induction.

[0003] The object of the invention is, in particular, to provide a generic system with improved efficiency properties. This object is achieved according to the invention by the features of claims 1 and 2, while advantageous embodiments and further developments of the invention can be found in the dependent claims.

[0004] The invention relates to a cooking system according to claims 1 and 2.

[0005] The design according to the invention enables, in particular, high efficiency, especially with regard to heat distribution, particularly in at least one base of the cooking vessel receiving element, and / or power distribution. In particular, a high power factor and / or active power factor can be achieved, which allows for a low current through electronics and / or a low electrical voltage applied to a resonant capacitance. In particular, low operating temperatures, especially of the heating unit, and / or low electrical current through electronics, especially cooking electronics, can be achieved, which allows for a more durable design. In particular, high flexibility and / or a high degree of design freedom can be enabled.

[0006] The term "cooking system" shall be understood to mean, in particular, a system that includes at least one cooking appliance intended for cooking food, such as an oven and / or a cooktop and / or a microwave oven, and which may additionally include at least one further component that differs from a cooking appliance, such as, in particular, a cleaning device and / or a refrigeration device and / or a mobile device and / or at least a contact module. In particular, the cooking system is intended to include at least one component designed for installation in a kitchen. The cooking system may, for example, include at least one accessory unit for the cooking appliance, such as a sensor unit for externally measuring the temperature of a cooking vessel and / or the food being cooked and / or the installation unit and / or the food receiving element.

[0007] In particular, the cooking system includes at least one support plate, which is specifically designed for placing the cooking vessel and / or the food receiving element. A "support plate" is understood to mean, in particular, at least one plate-like unit designed for placing at least one cooking vessel and / or at least one food receiving element and / or at least one food item on it for heating purposes. The support plate could, for example, be designed as a section of at least one worktop, in particular at least one kitchen worktop, specifically of the cooking system. Alternatively or additionally, the support plate could be designed as a cooktop surface.The mounting plate, designed as a cooktop plate, could in particular form at least part of a cooktop outer housing and, in particular, together with at least one outer housing unit, to which the mounting plate designed as a cooktop plate could be connected in at least one assembled state, form the cooktop outer housing to a large extent. The mounting plate could, for example, be made at least to a large extent of 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 metal and / or plastic and / or ceramic.The term "at least to a large extent" shall be understood to mean in particular a proportion, especially a mass proportion and / or volume proportion, of at least 70%, in particular of at least 80%, advantageously of at least 90% and preferably of at least 95%.

[0008] The term "setup unit" is understood to mean, in particular, a unit designed to be coupled with the heating unit and which, in particular during this coupling, receives and / or absorbs energy from the heating unit in at least one operating state. For example, the food holding element could be designed to be placed on the setup plate. Alternatively or additionally, the setup unit could, in particular in addition to the food holding element, have, for example, at least one support device, which could be designed, in particular, to support at least one cooking vessel and / or at least one food holding element, in particular the food holding element itself.

[0009] A "food receiving element" is understood to be, in particular, an element that delimits and / or defines at least one receiving chamber intended for receiving at least one food item and which is specifically designed to be heated by the heating unit. In particular, the food receiving element consists, at least to a large extent, of at least one heatable material. For example, the food receiving element could be made, at least to a large extent, of a metal, such as, in particular, aluminum and / or copper. The food receiving element has, in particular, a wall that at least partially surrounds the receiving chamber, which could, in particular, be made, at least to a large extent, of the heatable material.

[0010] In this context, a "heating unit" is understood to mean, in particular, a unit designed to supply energy to at least one cooking vessel and / or at least one food receiving element in at least one operating state for the purpose of heating the cooking vessel and / or the food receiving element. For example, the heating unit could be designed as a resistance heating unit and be specifically designed to convert energy into heat and supply this to the cooking vessel and / or the food receiving element for the purpose of heating the cooking vessel and / or the food receiving element.Alternatively or additionally, the heating unit could be designed as an induction heating unit and in particular be intended to supply energy in the form of an alternating electromagnetic field to the cooking vessel and / or the food receiving element, wherein the energy supplied to the cooking vessel and / or the food receiving element could in particular be converted into heat in the cooking vessel and / or the food receiving element.

[0011] An "induction unit" is understood to be, in particular, a unit designed to provide at least one alternating electromagnetic field for energy transfer in at least one operating state, and especially to transfer heating energy by means of the alternating electromagnetic field, preferably inductively and advantageously wirelessly. The induction unit is designed, in particular, to generate and / or induce at least one induced current in the installation unit, especially in the food receiving element of the installation unit and / or in the heating unit of the installation unit and / or in at least one receiving unit of the installation unit, by means of the alternating electromagnetic field, and thus, in particular, to transfer the heating energy to the installation unit, preferably wirelessly.

[0012] The induction unit could, for example, include at least one energy transfer element, designed differently from an induction heating element, which could be specifically designed to provide the heating energy for the inductive heating of the food receiving element in at least one operating state. In particular, the energy transfer element could include at least one inductor and / or at least one coil. The energy transfer element could, in particular, be designed to provide the heating energy for the inductive heating of the food receiving element in at least one operating state, at least by means of inductive energy transfer, specifically to at least one receiving unit of the installation unit.Alternatively or additionally, the induction unit could have at least one induction heating element, which is specifically designed to provide the heating energy for the inductive heating of the food receiving element in at least one operating state. For example, the induction unit could be designed to generate and / or induce at least one induced current in the food receiving element of the mounting unit by means of the alternating electromagnetic field in at least one operating state, and to inductively heat the food receiving element directly and / or immediately with the heating energy. The induction heating element of the induction unit could, in particular, be designed as a primary coil.

[0013] The phrase "that the induction unit provides at least one heating energy for inductive heating of the cooking element" in at least one operating state is to be understood in particular as meaning that the induction unit provides the heating energy for inductive heating of the cooking element in at least one operating state and, in particular, could provide at least one further energy in addition to the heating energy for inductive heating of the cooking element, which could be intended for a further purpose. This further energy could, for example, be intended to power at least one electronic unit. In particular, the induction unit could provide, in at least one operating state, at least one supply energy for powering at least one electronic unit, in addition to the heating energy for inductive heating of the cooking element.Alternatively or additionally, the additional energy could be, in particular, further heating energy, which could be intended specifically for heating the food receiving element and could differ from inductive heating. Specifically, in at least one operating state, the induction unit could provide, in addition to the heating energy for inductive heating of the food receiving element, at least further heating energy for supplying at least one heating element designed differently from an induction heating element. Alternatively or additionally, the additional energy could, in particular, be at least some loss energy, which could be lost, in particular, during the transfer of heating energy via dissipation.

[0014] The phrase "that the induction unit provides at least one heating energy "at least" for inductive heating of the food receiving element in at least one operating state" is to be understood in particular as meaning that at least part of the heating energy is intended for inductive heating of the food receiving element and, in particular, that at least another part of the heating energy could be intended for heating of the food receiving element in a way that differs from inductive heating of the food receiving element.The phrase "that the induction unit provides at least one heating energy for inductive heating of the food receiving element" in at least one operating state means in particular that the induction unit heats the food receiving element with the heating energy directly and / or immediately in at least one operating state, and / or that the induction unit provides the heating energy to at least one further unit, such as at least one receiving unit of the installation unit, which then inductively heats the food receiving element with at least a part of the received heating energy.

[0015] An "operating state" shall be understood in particular as a state in which the installation unit is placed, in particular on the mounting plate and advantageously at at least one target installation position defined by the mounting plate, and in which the induction unit supplies the heating energy to the installation unit, in particular directly and / or indirectly.

[0016] In this context, an "induction heating element" shall be understood to mean, in particular, an element designed to generate an alternating electromagnetic field, especially with a frequency of 20 kHz to 100 kHz, which is intended, in particular, to be converted into heat in at least one, in particular metallic, preferably ferromagnetic, base, especially of the food receiving element, by means of eddy current induction and / or remagnetization effects. A "heating element designed differently from an induction heating element" shall be understood to mean, in particular, an electrical element which, in at least one operating state, provides at least one type of heating energy other than inductive heating energy for heating the food receiving element.The heating element, which differs from the induction heating element, could, for example, be a radiant heating element and, in particular, heat the food receiving element in at least one operating state by means of electromagnetic radiation, for example, infrared radiation. Alternatively or additionally, the heating element, which differs from the induction heating element, could, for example, be a resistance heating element and, in particular, heat the food receiving element in at least one operating state by means of heating energy, which the heating element provides, in particular, by converting electrical energy supplied to the heating element into thermal energy.

[0017] The term "intended" should be understood to mean specifically programmed, designed, and / or equipped. The fact that an object is intended for a specific function should be understood to mean, in particular, that the object fulfills and / or executes this specific function in at least one application and / or operating state.

[0018] For example, the induction unit, in particular the induction heating element of the induction unit, could, in at least one operating state, use at least a portion of the heating energy to directly and / or immediately heat the food receiving element for inductive heating, and in particular, transfer at least a portion of the heating energy directly and / or immediately to the food receiving element. Preferably, the installation unit has at least one receiving unit, which is designed for wirelessly receiving at least a portion of the heating energy and supplying the heating element with at least a portion of the received energy.In particular, the induction unit, especially the induction heating element, is designed to indirectly and / or indirectly heat the food receiving element in at least one operating state by means of at least a portion of the heating energy, and in particular to transfer at least a portion of the heating energy indirectly and / or indirectly to the food receiving element. The induction unit, especially the induction heating element, is also designed to transfer at least a portion of the heating energy to the receiving unit in at least one operating state, and in particular to indirectly and / or indirectly heat the food receiving element via the receiving unit. The receiving unit could, in particular, comprise at least one coil and / or at least one inductor and / or at least one induction heating element. This allows, in particular, optimal heating of the food receiving element.In particular, a high degree of flexibility can be achieved, as wiring can be dispensed with.

[0019] The heating unit could, for example, consist exclusively of a heating element designed differently from the induction heating element and, in particular, be free of induction heating elements altogether. Preferably, in addition to the heating element, the heating unit has at least one induction heating element which, in at least one operating state, inductively heats the food receiving element with at least a portion of the received energy. This allows, in particular, a particularly high efficiency and / or high flexibility and / or uniform heating of the food receiving element to be achieved, since the food receiving element can be heated both inductively and in a manner different from inductive heating.

[0020] For example, the receiving unit could be configured differently from the induction heating element and, in particular, could be provided in at least one operating state for supplying the induction heating element with at least a portion of the received energy. Preferably, the induction heating element is at least partially part of the receiving unit. The receiving unit and the induction heating element of the heating unit are, in particular, formed as a single piece. The induction heating element of the heating unit could, in particular, be configured as a repeater coil and be specifically designed to receive energy and / or at least an alternating electromagnetic field from the induction heating element of the induction unit, which is configured as the primary coil.The phrase "at least partially" referring to a first object as being part of a second object means, in particular, that the first object has at least one sub-area, especially at least one element and / or at least one unit, which is part of the second object, and in particular could have at least one further sub-area in addition to this sub-area, which could in particular be part of at least one third object different from the second object. This allows, in particular, for reduced inventory and / or a low component variety. By coupling the induction unit and the receiving unit, of which the induction heating element is at least partially a part, losses can be distributed, in particular, between both units, thereby allowing, in particular, for a low temperature of the induction unit.In particular, losses from the receiving unit can be used to heat the food receiving element.

[0021] If the receiving unit and / or the induction heating element has the same area extent as the food receiving element when viewed perpendicularly to a main extension plane of the induction heating element, an optimized power distribution can be achieved, in particular regardless of the area extent of the induction unit.

[0022] In a heating method for the food receiving element, particularly one known from the prior art and in particular conventional, in which an induction heating element of the induction unit heats the food receiving element directly and / or immediately, an inner sub-region and an outer sub-region of the food receiving element are generally heated less effectively than an annular sub-region located between them, when viewed perpendicularly to a main extension plane of the induction unit. The heating element can, in at least one operating state, be arranged at least partially in the inner sub-region and / or at least partially in the outer sub-region, thereby enabling particularly uniform heating of the food receiving element.

[0023] Furthermore, it is proposed that the induction heating element and the heating element be electrically connected in series, which in particular allows for a simple and / or cost-effective and / or uncomplicated design.

[0024] Furthermore, it is proposed that the mounting unit has at least one resonant capacitor which is electrically connected to the induction heating element. In particular, the induction heating element and the resonant capacitor are connected in series. The resonant capacitor has, in particular, at least one capacitor. For example, the resonant capacitor could have at least two, in particular at least three, advantageously at least four, and preferably more capacitors, which could be arranged, in particular, in any series and / or parallel connection. Advantageously, the resonant capacitor has exactly one capacitor and consists, in particular, of the capacitor. This allows the induction heating element to be operated, in particular, at its resonant frequency, thereby enabling, in particular, high efficiency and / or low losses.In particular, a low voltage can be enabled in the resonant capacitance.

[0025] For example, the induction heating element and the heating element, when viewed perpendicularly to a principal extension plane of the induction heating element and / or when viewed perpendicularly to a principal extension plane of a mounting plate, could have at least substantially the same shape and / or form and / or size and / or area, and in particular be arranged overlapping and / or congruently. Preferably, the induction heating element, and in particular at least a part of the induction heating element, surrounds at least a part of the heating element when viewed perpendicularly to a principal extension plane of the induction heating element and / or when viewed perpendicularly to a principal extension plane of a mounting plate.For example, when viewed perpendicularly to a principal extension plane of the induction heating element and / or when viewed perpendicularly to a principal extension plane of a mounting plate, the induction heating element could surround, in particular, the entire heating element. Specifically, the portion of the heating element that is surrounded by the induction heating element, when viewed perpendicularly to a principal extension plane of the induction heating element and / or when viewed perpendicularly to a principal extension plane of a mounting plate, is arranged at least substantially around a center point and / or center of gravity of the induction heating element. This allows for optimal heating, particularly in an inner region of the induction heating element, which would otherwise receive only minimal heating.In particular, the induction heating element and the heating element can complement each other perfectly to heat the food receiving element, thereby achieving optimal heating and / or optimal cooking results.

[0026] For example, the entire induction heating element could surround the entire heating element when viewed perpendicularly to a principal extension plane of the induction heating element and / or when viewed perpendicularly to a principal extension plane of a mounting plate. The entire induction heating element could, for example, be arranged concentrically around the entire heating element. Preferably, the heating element, or in particular at least a part of the heating element, surrounds at least a part of the induction heating element when viewed perpendicularly to a principal extension plane of the induction heating element and / or when viewed perpendicularly to a principal extension plane of a mounting plate, and in particular also the part of the heating element surrounded by the induction heating element. This allows for a high degree of flexibility and / or design freedom.

[0027] When viewed perpendicularly to a principal extension plane of the induction unit and / or when viewed perpendicularly to a principal extension plane of a mounting plate, the induction unit and the induction heating element could, in at least one operating state, have the same area extent and / or be arranged in an overlapping manner. Alternatively or additionally, when viewed perpendicularly to a principal extension plane of the induction unit and / or when viewed perpendicularly to a principal extension plane of a mounting plate, the induction heating element could be arranged within an area spanned by the induction unit.Preferably, when viewed perpendicularly to a principal extension plane of the induction unit and / or when viewed perpendicularly to a principal extension plane of a mounting plate, the induction unit is arranged within an area spanned by the induction heating element in at least one operating state. When viewed perpendicularly to a principal extension plane of the induction unit and / or when viewed perpendicularly to a principal extension plane of a mounting plate, the induction unit has a smaller area than the induction heating element. This allows for particularly high efficiency, especially with regard to energy transfer between the induction unit and the induction heating element.

[0028] It is further proposed that the food receiving element and the induction unit have a distance of at least 10 mm, in particular at least 15 mm, advantageously at least 20 mm, particularly advantageously at least 25 mm, and preferably at least 30 mm, in at least one operating state. In particular, the food receiving element and the induction unit have a distance of a maximum of 500 mm, in particular at least 250 mm, advantageously at most 100 mm, particularly advantageously at most 80 mm, and preferably at most 60 mm, in at least one operating state. The mounting plate is arranged, in particular, between the induction unit and the mounting unit in at least one operating state. This allows, in particular, optimal heating of the food receiving element even over large distances.In particular, an arrangement of the mounting plate between the induction unit and the mounting unit can be made possible, especially at the same time with high flexibility in designing a thickness and thus in particular a material of the mounting plate.

[0029] According to the invention, the installation unit comprises at least one housing unit in which the heating unit and, in particular, the receiving unit are at least partially integrated. The phrase "at least partially" integrated into a second object is intended to mean, in particular, that the first object has at least a sub-area, in particular at least one element and / or at least one unit, which is integrated into the second object and, in particular, could have at least one further sub-area in addition to the sub-area, which could, in particular, be integrated into at least one third object different from the second object. The phrase "integrated" into a second object is intended to mean, in particular, that the first object is arranged within the second object and, in particular, is surrounded by the second object.The housing unit defines, in particular, an outer boundary and / or wall of the installation unit, which is arranged in a way that is accessible and / or visible to an operator. Specifically, the housing unit is designed as an outer housing unit. This allows, in particular, a protected arrangement of the heating unit and / or the receiving unit, thereby enabling a more durable design.

[0030] According to the invention, the housing unit and the food receiving element are formed in one piece. "In one piece" is understood to mean, in particular, at least materially bonded, for example by a welding process, an adhesive bonding process, an injection molding process, and / or another process that would appear useful to a person skilled in the art, and / or advantageously formed in one piece, such as by manufacturing from a single casting and / or by manufacturing using a single- or multi-component injection molding process, and advantageously from a single blank. This allows, in particular, high stability and / or a low number of component variations to be achieved.

[0031] The heating unit, and in particular the receiving unit, could, for example, be integrated exclusively and / or completely within the housing unit. In particular, the mounting unit could have at least one support device, which could be specifically designed for mounting the food receiving element and / or the housing unit, and which could, in particular, be free of the heating unit and / or the receiving unit. According to the invention, the mounting unit has at least one support device, which is designed for mounting the food receiving element and in which the heating unit is at least partially integrated. The heating unit, and in particular the receiving unit, could, for example, be integrated at least partially within the housing unit and at least partially within the support device.Alternatively, the heating unit and, in particular, the receiving unit could be integrated exclusively and / or completely into the support device. A "support device" is understood to be, in particular, a device designed for placing, especially positioning, the food receiving element and / or the housing unit on the mounting plate and for mounting it, and which, in at least one operating state, at least partially forms a support for the food receiving element and / or the housing unit. In one installation position, the support device is designed, in particular, for placement above the heating unit. Specifically, the support device is designed to absorb at least some of the heat energy emanating from the mounted food receiving element and / or the mounted housing unit and / or to prevent it from reaching the mounting plate.This allows for a particularly durable design, as it enables a protected arrangement of the heating unit and / or the receiving unit and / or prevents damage to the base plate, which could be caused in particular by heating the food receiving element and / or the housing unit.

[0032] Particularly high efficiency can be achieved through a stand-alone unit of a cooking system.

[0033] Efficiency can be further increased in particular by a method for operating a cooking system in which a food receiving element is inductively heated, wherein the food receiving element is heated in at least one way other than inductive heating, in particular by means of electromagnetic radiation and / or by means of thermal radiation.

[0034] The cooking system is not intended to be limited to the application and embodiment described above. In particular, the cooking system may, to fulfill a functionality described herein, have a different number of individual elements, components, and units than specified herein.

[0035] Further advantages 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. A person skilled in the art will expediently consider the features individually and combine them into meaningful further combinations.

[0036] They show: Fig. 1 a cooking system in a schematic top view, Fig. 2 a section along line II-II in Figure 1In a schematic representation, where electrical connections are shown as dashed lines and energy transfer is indicated by arrows, Fig. 3 shows an electrical circuit of a supply unit and an induction unit, of which a device heating element of the cooking system is part, Fig. 4 shows an electrical circuit of a heating element of a heating unit of the cooking system and a receiving unit of the cooking system, of which an induction heating element of the heating unit is part, in a schematic representation, Fig. 5 shows a section of a coupling of the electrical circuits from Figures 3 and 4In a schematic representation, Fig. 6 shows a top view of a main extension plane of the induction heating element, in which, for the sake of simplicity, a representation of a housing unit of a mounting unit of the cooking system and a mounting plate of the cooking system has been omitted, Fig. 7 shows a diagram in which a power factor is plotted against a frequency, Fig. 8 shows a section of an alternative cooking system in a schematic sectional view and Fig. 9 shows a heating unit of a mounting unit of an alternative cooking system in a schematic top view.

[0037] Fig. 1 Figure 1 shows a cooking system 10a, which is designed as an induction cooking system. In the present embodiment, the cooking system 10a is designed as a cooktop system and, in particular, as an induction cooktop system.

[0038] The cooking system 10a has a mounting plate 34a. The mounting plate 34a defines a target mounting position for a mounting unit 12a (see also Fig. 2 In its assembled state, the mounting plate 34a forms a viewing surface, which in this assembled state is oriented particularly towards the operator. The mounting plate 34a is intended for setting up the mounting unit 12a, particularly at the intended installation position for heating (see...). Figs. 1 and 2 ). In the present embodiment, the mounting plate 34a is designed as a worktop, in particular as a kitchen worktop.

[0039] The cooking system 10a has an operator interface 36a for inputting and / or selecting operating parameters, such as heating power and / or heating power density and / or a heating zone. The operator interface 36a is designed to output the value of an operating parameter to an operator.

[0040] The cooking system 10a has a control unit 38a. The control unit 38a is designed to execute actions and / or change settings depending on operating parameters entered via the user interface 36a. In a heating operating state, the control unit 38a regulates the energy supply to at least one device heating element 40a.

[0041] The cooking system 10a has at least one appliance heating element 40a (see below). Figs. 1 and 2In the present embodiment, the cooking system 10a has several appliance heating elements 40a, of which only one is shown in the figures and of which only one is described below. The appliance heating element 40a is designed to heat at least one mounting unit 12a placed on the mounting plate 34a above the appliance heating element 40a, and in particular at the desired mounting position. The appliance heating element 40a is designed as an induction heating element. The appliance heating element 40a is arranged in an installation position below the mounting plate 34a, specifically below the desired mounting position.

[0042] The cooking system 10a has a supply unit 46a, which is intended to supply the appliance heating element 40a with energy (see Fig. 3The power supply unit 46a is of conventional design. The power supply unit 46a includes an inverter 48a. In an operating state, the inverter 48a provides a high-frequency alternating current to supply the device heating element 40a. The power supply unit 46a includes a rectifier 50a. In an operating state, the rectifier 50a rectifies a voltage. The rectifier 50a and the inverter 48a are electrically connected to each other.

[0043] The cooking system 10a includes the installation unit 12a (see below). Figs. 1 and 2 The installation unit 12a has a food receiving element 16a. The food receiving element 16a is designed to hold food for the purpose of heating it. The food receiving element 16a consists largely of a metallic and, in particular, ferromagnetic material. The installation unit 12a is specifically designed for the cooking system 10a.

[0044] The installation unit 12a includes a heating unit 14a. The heating unit 14a is designed to heat the food receiving element 16a. In an operating state, the heating unit 14a supplies energy to the food receiving element 16a for heating the food receiving element 16a.

[0045] In the present embodiment, the installation unit 12a has a housing unit 30a (see figure). Fig. 2 The housing unit 30a is designed as an outer housing unit. The housing unit 30a and the food receiving element 16a are formed as a single piece.

[0046] The housing unit 30a and the food receiving element 16a together define and / or enclose an interior space 42a. In one operating state, the heating unit 14a is located within the interior space 42a. In one operating state, the heating unit 14a is partially integrated into the housing unit 30a.

[0047] To supply heating energy to the heating unit 14a, the cooking system 10a includes an induction unit 18a. In one installation position, the induction unit 18a is located below the mounting plate 34a, specifically below the intended installation position. The appliance heating element 40a is partially integrated into the induction unit 18a.

[0048] In an operating state, the induction unit 18a provides heating energy at least for the inductive heating of the food receiving element 16a. The induction unit 18a provides this heating energy in the form of an alternating electromagnetic field. The induction unit 18a includes an inductor 44a. In an operating state, the inductor 44a provides the heating energy at least for the inductive heating of the food receiving element 16a. The inductor 44a and the appliance heating element 40a are formed as a single unit.

[0049] For example, the induction unit 18a could supply the heating energy directly and / or immediately to the food receiving element 16a. In the present embodiment, the induction unit 18a supplies the heating energy to the appliance heating element 40a indirectly and / or indirectly, in particular via the heating unit 14a of the mounting unit 12a.

[0050] The heating unit 14a has a heating element 20a that is designed differently from an induction heating element (see Fig. 2 , 4 and 5 In the present embodiment, the heating element 20a is designed as a resistance heating element. The heating element 20a is intended for heating the food receiving element 16a.

[0051] The installation unit 12a has a receiving unit 22a (see Fig. 2 , 4 and 5The receiving unit 22a is designed for the wireless reception of at least a portion of the heating energy. The receiving unit 22a has an induction heating element 24a which, in an operating state, wirelessly receives the portion of the heating energy from the receiving unit 22a. The induction unit 18a is designed for inductive energy transfer to the receiving unit 22a. In an operating state, the induction unit 18a inductively transfers the heating energy to the receiving unit 22a.

[0052] The receiving unit 22a is designed to supply the heating element 20a with at least a portion of the received energy. The receiving unit 22a and the heating element 20a are electrically connected to each other. In the present embodiment, the receiving unit 22a and the heating element 20a are electrically connected in series.

[0053] In addition to the heating element 20a, the heating unit 14a has an induction heating element 24a (see figure). Fig. 2 , 4 and 5 The induction heating element 24a is partially integrated into the receiver unit 22a. The induction heating element 24a of the heating unit 14 and the induction heating element 24a of the receiver unit 22a are identical. In an operating state, the induction heating element 24a inductively heats the food receiving element 16a with at least a portion of the energy received from the receiver unit 22a.

[0054] The induction heating element 24a and the heating element 20a are electrically connected in series (see figure). Fig. 2 , 4 and 5 The mounting unit 12a has a resonant capacitance 26a. In the present embodiment, the resonant capacitance 26a comprises a capacitor and is specifically designed as the capacitor. In an operating state, the resonant capacitance 26a is electrically connected to the induction heating element 24a.

[0055] When viewed from a principal extent plane of the induction heating element 24a, the induction heating element 24a surrounds a part 52a of the heating element 20a, in particular an inner part 52a of the heating element 20a. In addition to the inner part 52a of the heating element 20a, the heating element 20a has an outer part 54a. When viewed from a principal extent plane of the induction heating element 24a, the heating element 20a, in particular the outer part 54a of the heating element 20a, surrounds a part 56a of the induction heating element 24a, in particular an inner part 56a of the induction heating element 24a.

[0056] In addition to the inner part 56a of the induction heating element 24a, the induction heating element 24a has an outer part 58a. When viewed on a principal extension plane of the induction heating element 24a, the induction heating element 24a, and in particular the outer part 58a of the induction heating element 24a, surrounds a part 52a, 54a of the heating element 20a, and in particular the inner part 52a of the heating element 20a and the outer part 54a of the heating element 20a.

[0057] When viewed from a principal plane of extension of the induction heating element 24a, the induction heating element 24a surrounds the induction unit 18a. When viewed perpendicularly to a principal plane of extension of the induction unit 18a, the induction unit 18a is located within an area spanned by the induction heating element 24a in its operating state. When viewed from a principal plane of extension of the induction heating element 24a, the area of ​​the induction heating element 24a is larger than the area of ​​the induction unit 18a.

[0058] In an operating state, the food receiving element 16a and the induction unit 18a are arranged at a distance from each other. In the present embodiment, the food receiving element 16a and the induction unit 18a have a distance 28a of essentially 34 mm in an operating state (see figure). Fig. 2 ).

[0059] In a method for operating the cooking system 10a, the food receiving element 16a is heated in at least one way other than inductive heating, in addition to inductive heating. In one operating state, the food receiving element 16a is heated, in addition to inductive heating, in particular by means of the induction heating element 24a, by the heating element 20a, which is in particular a resistance heating element.

[0060] Fig. 7Figure 1 shows a diagram in which a power factor is plotted against power. The power factor is plotted on an ordinate axis 60a. Power is plotted on an abscissa axis 62a. A solid curve 64a shows the power factor versus power for an embodiment in which a food holding element is heated directly by the appliance heating element 40a, specifically avoiding a heating unit 14a integrated in the mounting unit 12a. A dashed curve 66a shows the power factor versus power for an embodiment in which the food holding element 16a is heated by the heating unit 14a integrated in the mounting unit 12a.

[0061] It can be seen that in a large part of the frequency range, a higher power factor can be achieved in the case of heating the cooking element 16a by means of the heating unit 14a integrated in the mounting unit 12a than in the case of heating the cooking element 16a exclusively by means of the appliance heating element 40a, in particular due to a coupling of the induction unit 18a and the receiver unit 22a.

[0062] Due to the similarity between the circuit in which the induction unit 18a is arranged and the circuit in which the heating unit 14a and / or the receiving unit 22a are arranged, it is particularly possible to achieve a total impedance that is independent of the number of windings of the induction heating element 24a of the heating unit 14a. This allows for a high degree of design freedom, especially with regard to the configuration and / or arrangement of the induction heating element 24a of the heating unit 14a and / or the resonant capacitance 26a. In particular, the electric current and voltage in the circuit in which the heating unit 14a and / or the receiving unit 22a are arranged can be freely selected, such as a high voltage and a low current, a low voltage and a high current, or any intermediate values ​​thereof.

[0063] In Figs. 8 and 9Two further embodiments of the invention are shown. The following descriptions are essentially limited to the differences between the embodiments, whereby with regard to components, features and functions that remain the same, reference is made to the description of the embodiment of the Figs. 1 to 7 Reference can be made to. To distinguish the embodiments, the letter a in the reference numerals of the embodiment is used in the Figs. 1 to 7 by the letters b and c in the reference numerals of the exemplary embodiment of the Figs. 8 and 9 replaced. With regard to identically designated components, especially those with the same reference numerals, reference can generally also be made to the drawings and / or the description of the embodiment of the Figs. 1 to 7 be referred.

[0064] Fig. 8Figure 1 shows a section of an alternative cooking system 10b, which includes a mounting unit 12b. The mounting unit 12b has a heating unit 14b and a food holding element 16b. The mounting unit 12b includes a housing unit 30b. The housing unit 30b and the food holding element 16b are formed as a single piece.

[0065] In addition to the housing unit 30b, the mounting unit 12b has a support device 32b. The support device 32b is designed to support the food receiving element 16b, and in particular, to support the housing unit 30b. In an operating state, the heating unit 14b is partially integrated into the support device 32b. A receiving unit 22b of the mounting unit 12b is also partially integrated into the support device 32b in an operating state.

[0066] Fig. 9Figure 1 shows a top view of a heating unit 14c of a mounting unit 12c of an alternative cooking system 10c. The heating unit 14c has a heating element 20c that differs from an induction heating element. The heating unit 14c has an induction heating element 24c, which is connected in series with the heating element 20c. When viewed perpendicularly to a main plane of extension of the induction heating element 24c, the heating element 20c surrounds the induction heating element 24c. When viewed perpendicularly to a main plane of extension of the induction heating element 24c, the heating element 20c extends substantially over the entire surface area of ​​the mounting unit 12c. When viewed perpendicularly to a main plane of extension of the induction heating element 24c, the mounting unit 12c in the present embodiment has a substantially elongated and / or rectangular shape. Reference sign

[0067] 10 Cooking system 12 Mounting unit 14 Heating unit 16 Food receiving element 18 Induction unit 20 Heating element 22 Receiver unit 24 Induction heating element 26 Resonance capacitance 28 Spacing 30 Housing unit 32 Support device 34 Mounting plate 36 Operator interface 38 Control unit 40 Device heating element 42 Interior 44 Inductor 46 Power supply unit 48 Inverter 50 Rectifier 52 Part 54 Part 56 Part 58 Part 60 Ordinary axis 62 Abscissa axis 64 Curve 66 Curve

Claims

1. Cooking system comprising at least one placement unit (12a-c), which has at least one food-holding element (16a-c) and at least one heating unit (14a-c), which is provided for heating the food-holding element (16a-c) and which is provided in at least one operating state for supplying energy to the food-holding element (16a-c) for the purpose of heating the food-holding element (16a-c), and comprising at least one induction unit (18a-c) which has at least one induction heating element (44a-c) and which, in at least one operating state, provides at least one amount of heating energy at least for inductively heating the food-holding element (16a-c), wherein the heating unit (14a-c) has at least one heating element (20a-c) different from an induction heating element, wherein the heating element (20a-c) is provided for heating the food-holding element (16a-c), and wherein the food-holding element (16a-c) to a large extent consists of a ferromagnetic material, characterised in that the placement unit (12b) has at least one pad device (32b) which is provided for placing the food-holding element (16b) and in which the heating unit (14b) is at least partially integrated.

2. Cooking system at least according to the precharacterising clause of claim 1 and in particular according to claim 1, wherein the placement unit (12a) has at least one housing unit (30a) in which the heating unit (14a) is at least partially integrated, and wherein at least the heating element (20a) is integrated in the housing unit (30a), characterised in that the housing unit (30a) and the food-holding element (16a) are configured in one piece.

3. Cooking system according to claim 1 or 2, characterised in that the placement unit (12a-c) has at least one receiving unit (22a-c) which is provided for wirelessly receiving at least one part of the heating energy and for supplying the heating element (20a-c) with at least one part of the received energy.

4. Cooking system according to claim 3, characterised in that the heating unit (14a-c) in addition to the heating element (20a-c) has at least one induction heating element (24a-c) which, in at least one operating state, inductively heats the food-holding element (16a-c) with at least one part of the received energy.

5. Cooking system according to claims 3 and 4, characterised in that the induction heating element (24a-c) is at least partially part of the receiving unit (22a-c).

6. Cooking system according to claim 4 or 5, characterised in that the induction heating element (24a-c) and the heating element (20a-c) are electrically connected in series.

7. Cooking system according to one of claims 4 to 6, characterised in that the placement unit (12a-c) has at least one resonance capacitance (26a-c) which is electrically conductively connected to the induction heating element (24a-c).

8. Cooking system according to one of claims 4 to 7, characterised in that, when viewed perpendicular to a main extension plane of the induction heating element (24a-b), the induction heating element (24a-b) surrounds at least one part (52a-b) of the heating element (20a-b).

9. Cooking system according to one of claims 4 to 8, characterised in that, when viewed perpendicular to a main extension plane of the induction heating element (24a-c), the heating element (20a-c) surrounds at least one part (56a-c) of the induction heating element (24a-c).

10. Cooking system according to one of claims 4 to 9, characterised in that, when viewed perpendicular to a main extension plane of the induction unit (18a-c), the induction unit (18a-c) is arranged in at least one operating state within a surface spanned by the induction heating element (24a-c).

11. Cooking system according to one of the preceding claims, characterised in that in at least one operating state the food-holding element (16a-c) and the induction unit (18a-c) have a spacing (28a-c) of at least 10 mm.