Domestic appliance device
Patent Information
- Authority / Receiving Office
- EP · EP
- Patent Type
- Applications
- Current Assignee / Owner
- BSH HAUSGERATE GMBH
- Filing Date
- 2024-08-28
- Publication Date
- 2026-07-08
Smart Images
Figure EP2024074079_06032025_PF_FP_ABST
Abstract
Description
[0001] Household appliance device
[0002] The invention relates to a household appliance device according to claim 1, a household appliance system according to claim 10, a cooking utensil according to claim 11, a small household appliance according to claim 12, a household appliance accessory according to claim 13 and a method for operating a household appliance device according to claim 14.
[0003] A cooking utensil is already known from the prior art which is intended for inductive energy absorption of energy from a cooking surface and only simultaneous heating of another unit, for example via resistive heating.
[0004] The object of the invention is, in particular but not limited to, to provide a generic device with improved properties in terms of flexibility and reduced complexity. This object is achieved according to the invention by the features of claims 1, 10, 11, 12, 13, and 14, while advantageous embodiments and further developments of the invention can be found in the subclaims.
[0005] A household appliance device, in particular a hob device, is proposed, comprising a receiving coil for wirelessly receiving inductive energy and an induction coil for wirelessly supplying energy, in particular heating, to another unit during an induction process, wherein the receiving coil is provided to receive energy independently of the induction process of the induction coil and the induction coil is provided to be operated at the same frequency as the receiving coil during the induction process.
[0006] Such a configuration can advantageously increase, in particular, flexibility with regard to an operating state of the household appliance. Advantageously, the household appliance can receive energy inductively in at least one operating state without inductively supplying, in particular heating, the further unit. In particular, the household appliance can advantageously fulfill different functions in different operating states. Furthermore, in particular by operating the induction coil at the same frequency as the receiving coil, a complexity of the household appliance, in particular of an electronic circuit of the household appliance, can be advantageously reduced, in particular by avoiding and / or reducing power electronics in the household appliance. Furthermore, complexity can be reduced by avoiding a resistive heating element.
[0007] The household appliance device is in particular part of a household appliance system which, in addition to the household appliance device, in particular has at least one household appliance. The household appliance system is preferably designed as a cooking system. The household appliance is in particular a cooking appliance, wherein the cooking appliance could be, for example, an oven and / or a microwave and / or a grill and / or a steamer or the like. Advantageously, the household appliance, in particular the cooking appliance, is a hob and in particular an induction hob. The household appliance device is preferably designed as a hob device, in particular an induction hob device. The household appliance is preferably provided for transmitting the inductive energy to the receiving coil.In particular, the household appliance comprises at least one supply unit, in particular with at least one supply coil, which is provided for transmitting the inductive energy to the receiving coil. The supply unit preferably comprises power electronics and, in particular, at least one control unit for controlling the current in the supply coil.
[0008] The household appliance can be at least part, in particular a subassembly, of a cooking utensil, in particular a cookware. In addition to the household appliance, the cooking utensil has, in particular, at least one food receiving unit. Preferably, the further unit, which is inductively supplied with energy and in particular heated by the induction coil, is designed as the food receiving unit. The induction process of the induction coil is preferably designed as a heating process. The food receiving unit is preferably intended to be heated inductively, in particular by the induction coil. The food receiving unit preferably has at least one food receiving area for receiving food for at least one cooking process, in particular at least the heating process and / or a further cooking process.The food receiving unit preferably comprises at least one ferromagnetic material. The food receiving unit is preferably arranged above at least part of the household appliance, in particular at least the receiving coil and the induction coil, and is in particular firmly connected to the latter in the cooking utensil. The fixed connection is in particular a non-detachable connection or one that can only be released using a tool. In this context, "detachable" should be understood in particular to mean "non-destructively separable". This can advantageously increase ease of use, in particular by advantageously preventing any loss of the food receiving unit belonging to the household appliance or of the household appliance belonging to the food receiving unit.Furthermore, stability can be increased, in particular during the at least one cooking process, by preventing the food receiving unit and the household appliance from shifting relative to one another, thereby increasing, in particular, the transmission efficiency of the inductive energy in the induction process and, in particular, the heating efficiency. Furthermore, the food receiving unit can advantageously be permanently connected to additional units of the household appliance, in particular at least one functional unit. For example, the food receiving unit and the household appliance can be connected to one another by a positive and / or frictional connection, for example, by a screw connection and / or the like. In particular, the food receiving unit and the household appliance can be connected to one another at least partially in one piece."Integral" should be understood in particular as being at least materially connected, for example, by a welding process, an adhesive process, an injection molding process, and / or another process deemed appropriate by a person skilled in the art, and / or advantageously as being formed in one piece, such as by being manufactured from a single casting and / or by being manufactured using a single- or multi-component injection molding process, and advantageously from a single blank. The cooking utensil can be designed, in particular, as a smart cooking utensil.
[0009] Alternatively or additionally, the household appliance can be at least part, in particular a subassembly, of a small household appliance. The small household appliance is preferably designed to be portable and in particular to be transported manually by the operator. The small household appliance is preferably designed as a small cooking appliance, in particular a small cooking appliance. The small household appliance can, for example, be designed as a rice cooker and / or air fryer and / or blender and / or juicer and / or food processor and / or kettle and / or coffee machine and / or the like. The small household appliance provides at least one further function, in particular in addition to the heating process. The small household appliance preferably has the further unit, which is designed in particular as the food receiving unit and / or as another unit for wirelessly receiving the inductive energy from the induction coil.The other unit can, for example, be designed as a heating element heated during the induction process, which heats a medium, for example air, outside the food receiving unit and then transports it to the food receiving unit. Alternatively or additionally, it would be conceivable for the other unit to provide a function other than heating during the induction process, in particular by providing an electrical current wirelessly via the inductive energy of the induction coil. Preferably, the household appliance device is permanently installed in the small household appliance. It is conceivable for the further unit and / or the food receiving unit to be permanently installed in the small household appliance.Alternatively, the household appliance and / or the food storage unit and / or the further unit can be removably arranged and / or fixed in the small household appliance, in particular a remainder of the small household appliance. It is conceivable for the small household appliance to comprise the cooking utensil. Alternatively, it is conceivable for the household appliance and / or the food storage unit and / or the further unit to each be individually arranged and / or fixed and / or installed in the small household appliance, in particular the remainder of the small household appliance. The remainder of the small household appliance comprises, in particular, structural units and / or components of the small household appliance free from the household appliance and / or the food storage unit and / or the further unit.
[0010] Alternatively or additionally, the household appliance device can be at least part, in particular at least a subassembly, of a household appliance accessory, in particular a cooking accessory. The household appliance accessory is preferably designed as a cooking accessory, in particular for the household appliance designed as a cooking appliance. The household appliance accessory is designed in particular as a base unit for being placed underneath the further unit, in particular the food storage unit and / or the small household appliance. It is conceivable that the household appliance accessory is part of the small household appliance for being placed underneath the food storage unit. It is conceivable that the food storage unit and / or the small household appliance is / are merely placed on the household appliance accessory in the base state and is / are merely fixed thereto by means of gravity.Preferably, the household appliance accessory and the food storage unit and / or the small household appliance are detachably connected to one another and / or fixed to one another in the support state, in particular without tools. This can advantageously improve cleaning efficiency and / or ease of use, in particular aesthetics. In particular, various food storage units and / or small household appliances can be used interchangeably with the household appliance accessory, thereby advantageously increasing flexibility and allowing the food storage unit and / or the household appliance accessory to be replaced particularly cost-effectively, in particular in the event of a respective defect. For example, the household appliance accessory and the food storage unit and / or the small household appliance can be connected to one another by a magnetic connection and / or a plug-in connection and / or the like.Preferably, the household appliance device and / or the household appliance accessory is provided for an inductive energy supply, in particular heating, of precisely one food storage unit and / or one small household appliance. Alternatively, it would be conceivable for the household appliance accessory to comprise at least one further household appliance device for an inductive energy supply of at least one further food storage unit and / or one further small household appliance.
[0011] The household appliance system preferably has a support plate for placing the cooking utensils and / or the household appliance accessories, in particular underneath the food storage unit and / or the small household appliance, and / or the small household appliance, at least for the inductive power supply of the receiving coil. The supply unit is preferably arranged in an installed position underneath the support plate. The support plate can be designed as a hob plate. Alternatively, the support plate can be designed as a kitchen worktop. Preferably, the kitchen worktop, in particular in contrast to the hob plate, is additionally provided to provide a food preparation area, in particular in which, for example, cutting and / or mixing and / or mashing and / or peeling of food could be carried out.The frequency is, in particular, the frequency of an alternating voltage which a current in the receiving coil and the induction coil has. A “same frequency” is to be understood in particular as an identical frequency within a framework of electrical and / or electronic tolerances. The frequencies are, in particular, at least substantially identical to one another. In this context, “at least substantially” is to be understood in particular as meaning that a frequency in the induction coil during the induction process deviates from the frequency in the receiving coil by preferably less than 10%, more preferably less than 5%, and particularly preferably less than 2% of the frequency of the receiving coil. In particular, the receiving coil and the induction coil are connected free of power electronics which are provided for adjusting the frequency, for example a rectifier and / or inverter.In particular, "adjusting the frequency" should not be understood as simply interrupting or starting the current. This can advantageously simplify the design of the household appliance. The frequency preferably has a value of at least 10 kHz and preferably at least 20 kHz and / or a maximum of 100 kHz and preferably a maximum of 80 kHz. Advantageously, a power transfer from the supply coil to the receiving coil can be controlled using the same control strategy as a power transfer from the induction coil to the further unit, in particular by selecting the frequency at the coils, in particular at the supply coil.
[0012] The induction coil and / or the receiving coil, in particular a structure thereof, is / are preferably adapted to a shape of the cooking utensil and / or the household appliance accessory and / or the small household appliance and / or are configured depending on a system impedance and in particular on a respective energy requirement of the receiving coil and the induction coil. It would be conceivable for the induction coil and the receiving coil to be configured identically to one another, in particular for an at least substantially identical energy requirement, whereby complexity and / or cost efficiency can be particularly advantageously improved.
[0013] In particular, the induction coil can be supplied with energy by the receiving coil. Preferably, the induction coil can be supplied with energy solely by means of the receiving coil. The supply should be understood to mean, in particular, an energy supply, in particular a power supply. Preferably, the receiving coil is provided to provide energy solely by receiving the inductive energy. The receiving coil is preferably provided to supply the total energy requirement of the household appliance device. In particular, the household appliance device can be designed without a further energy source, in particular an energy storage device, for example a battery and / or a rechargeable battery, and / or a wired connection to an external power supply. Alternatively, it would be conceivable for the household appliance device to have a further energy source, for example for operating at least one functional unit.
[0014] "Intended" should be understood as specifically programmed, designed, and / or equipped. The fact that an object is intended for a specific function should be understood as meaning that the object fulfills and / or performs this specific function in at least one application and / or operating state.
[0015] It is further proposed that the receiving coil and the induction coil be electrically connected to a supply of power to the induction coil, in particular through the receiving coil, via a switch. In particular, the induction coil can be supplied with power via a wire through the receiving coil. As a result, the supply of power to the induction coil can be advantageously switched on and off and, in particular, advantageously controlled. In particular, the receiving coil can advantageously be decoupled from the induction coil. Furthermore, a particularly efficient current transmission from the receiving coil to the induction coil can be provided. Preferably, the induction coil can only be supplied with power via a wire through the receiving coil. The supply of power to the induction coil can preferably be interrupted by the switch. In particular, the induction coil can only be supplied with power for a closed position of the switch.In particular, the supply of the induction coil by the switch can be suspended even during reception of the inductive energy from the receiving coil. The switch is, in particular, part of the household appliance device. The switch can be designed as a relay and preferably as a semiconductor switch, which can, for example, comprise a field-effect transistor, a bipolar transistor, and / or a diode. The switch can, in particular, be designed for operation at high currents.
[0016] It is further proposed that the household appliance device has a functional unit, in particular the one mentioned above, for providing at least one function, wherein the receiving coil and the functional unit can be electrically connected by a further switch to supply the functional unit, in particular by the receiving coil. In particular, the functional unit can be supplied with power via a wired connection through the receiving coil. Preferably, the functional unit can be supplied only via the receiving coil and in particular only via a wired connection through the receiving coil. This makes it possible to achieve a particularly simple design of the household appliance device, in particular free of the further energy source. The supply to the functional unit can advantageously be switched on and off and, in particular, advantageously controlled.Furthermore, at least ease of use can be increased by the household appliance providing at least one further function in addition to heating. The supply to the functional unit can preferably be interrupted by the further switch. In particular, the functional unit can only be supplied with energy when the further switch is in the closed position. Advantageously, the supply to the functional unit by the further switch can also be interrupted while the inductive energy of the receiving coil is being received. The further switch is preferably part of the household appliance. The further switch can be designed identically to the switch. The further switch can in particular be intended for operation at high voltages.
[0017] The functional unit can support and / or monitor the cooking process. The functional unit can have at least one sensor unit and can be provided, for example, for temperature measurement and / or pressure measurement and / or weight measurement and / or the like. Alternatively or additionally, the functional unit can have at least one movement unit, in particular an electric motor, for example for automatic mixing and / or stirring and / or for a fan of an air fryer and / or the like. Alternatively or additionally, the functional unit can have a user interface with at least one control element for at least one control setting. Alternatively or additionally, the functional unit can have at least one output unit, which is provided, in particular, for outputting at least one item of information to an operator.For example, the output unit could have at least one display element for optically outputting the information and / or be provided for acoustic and / or haptic output of the information. The output unit can, for example, output a parameter determined by the sensor unit and / or a power received by the receiving coil and / or an evaluation of a spatial arrangement of the receiving coil, and thus in particular at least of the household appliance accessory or the cooking utensil and / or the small household appliance, relative to the supply unit and / or the operating setting and / or the like. Alternatively or additionally, the functional unit can have a communication unit, in particular for communicating with the cooking appliance and / or with a control unit, in particular as mentioned above, and / or with a network and / or the like.The functional unit can be provided alternatively or in addition to providing another function that appears appropriate to a person skilled in the art. The functional unit can be arranged and / or attached to or in the household appliance accessory and / or the food storage unit, in particular in the food storage compartment or on an exterior side of the food storage unit, and / or the cooking utensil and / or the small household appliance.
[0018] Furthermore, it is proposed that the induction coil and the functional unit can each be supplied individually in individual operating states, in particular by the receiving coil. In particular, the induction coil and the functional unit can be supplied independently of one another. Advantageously, the function of the functional unit can also be provided before or after heating by the induction coil. This can advantageously increase at least operating convenience. The functional unit and the induction coil are preferably connected in parallel. The switch and the additional switch are preferably connected in parallel.
[0019] Preferably, the induction coil can be supplied by the receiving coil in an induction state and in particular can be supplied individually in a single induction state. The induction state particularly comprises the single induction state. In the induction state, the switch is particularly in the closed position. In the single induction state, the further switch is preferably in an open position. The functional unit can be supplied by the receiving coil in a functional state and in particular can be supplied individually in a single functional state. The functional state particularly comprises the single functional state. In the functional state, the further switch is particularly in the closed position. In the single functional state, the switch is preferably in an open position.
[0020] It is further proposed that the induction coil and the functional unit can be supplied jointly by the receiving coil in a hybrid operating state, whereby in particular a particularly advantageously monitored and / or assisted cooking process, in particular a heating process, can be provided. The switch and the further switch are in a hybrid state, in particular the hybrid operating state, preferably in the respectively closed position. The induction state and the functional state each comprise in particular the hybrid state. The induction process takes place in particular in the induction state. At least the receiving coil and the induction coil are in particular provided to provide a system impedance for which the household appliance device can be operated, in particular efficiently, in all three operating states, in particular the single induction state, the single functional state and the hybrid state.Furthermore, the household appliance device is preferably provided to be controlled by a control algorithm which switches smoothly between the three operating states, whereby safety can be increased in particular.
[0021] It is further proposed that the household appliance device have a resonance capacitance which is connected between the receiving coil and the induction coil in at least one operating state, in particular at least in the induction state. In particular, the inductive energy can be advantageously, in particular advantageously efficiently, received by the receiving coil and / or at least one characteristic of a current provided by the receiving coil can be advantageously adjusted. The resonance capacitance can in particular be connected in series with the receiving coil. The resonance capacitance can be connected in series with the induction coil at least in the operating state, in particular the induction state. The resonance capacitance can in particular be connected in series with the functional unit at least in the functional state.
[0022] It is also proposed that the household appliance device have a compensation capacitance which is connected in parallel or series to the induction coil in at least one operating state, in particular at least in the induction state. As a result, at least one characteristic of the current can be adapted to the induction coil. Advantageously, an impedance can be adapted. In particular, a particularly advantageous induction process can be achieved. The compensation capacitance is preferably provided to reduce a current intensity, at least in the single induction state. The induction coil can preferably, in particular exclusively, be electrically decoupled from the receiving coil and / or the functional unit together with the compensation capacitance and in particular can be electrically connected together with these. The compensation capacitance can preferably be electrically connected to the receiving coil via the switch.
[0023] It is further proposed that the household appliance device comprise a shielding element for magnetically shielding the induction coil. This advantageously allows the supply of the induction coil to be controlled. The shielding element is provided, in particular, for magnetically shielding the induction coil at least from the supply unit. In particular, the induction coil and / or the further unit can advantageously be decoupled from the supply coil. The shielding element is, at least in the installed state, preferably arranged beneath the induction coil and in particular between the induction coil and the household appliance, in particular the supply unit. The shielding element preferably comprises and / or is formed from at least one metal, for example aluminum and / or iron and / or steel, and / or ferrite.The shielding element can be plate-shaped and, in particular, have a thickness corresponding to a maximum of 50%, in particular a maximum of 20%, advantageously a maximum of 10%, preferably a maximum of 5%, of a length and / or a width of the unit and / or have at least two, in particular opposite, sides that have a flat, in particular smooth, surface. It is conceivable for the shielding element to have a closed surface and / or be continuous. Alternatively, it would be conceivable for the shielding element to have at least one recess and / or continuous gaps.The induction coil preferably overlaps at least to a large extent, in particular to at least 55%, advantageously at least 65%, preferably at least 75%, particularly preferably at least 85% and particularly advantageously at least 95% of a surface of the induction coil, with at least a partial surface of the shielding element in at least one viewing direction, in particular parallel to the force of gravity at least in the erected state.
[0024] It is further proposed that the shielding element be arranged between the induction coil and the receiving coil. In particular, the shielding element is provided for magnetically shielding the induction coil from the receiving coil. The shielding element is provided, in particular, for magnetically shielding the further unit from the receiving coil. As a result, the induction coil and / or the further unit can advantageously be decoupled from the receiving coil. The electrical connection between the receiving coil and the induction coil can run outside, in particular laterally, the shielding element. Alternatively, it would be conceivable for the electrical connection between the receiving coil and the induction coil to run through the recess and / or gap in the shielding element.
[0025] Furthermore, a method for operating the household appliance is proposed, wherein the receiving coil wirelessly receives inductive energy, and the induction coil wirelessly inductively supplies, in particular heats, the additional unit during the induction process. The receiving coil receives the energy independently of the induction process of the induction coil, and the induction coil is operated at the same frequency as the receiving coil during the induction process. This advantageously increases flexibility and / or reduces complexity of the household appliance.
[0026] The method preferably comprises a method step, in particular a receiving step, in which the receiving coil receives the inductive energy. In a further method step, in particular a supply step, the energy is preferably transmitted to the induction coil and / or the functional unit depending on the position of the switch and the further switch. For the induction process, the energy in the supply step is preferably transmitted to at least the induction coil for the inductive supply, in particular heating, of the further unit. The supply step takes place, in particular, after the receiving step.
[0027] The household appliance, the household appliance system, the cooking utensil, the household appliance accessory, and the method for operating the household appliance are not intended to be limited to the application and embodiment described above. In particular, the household appliance, the household appliance system, the cooking utensil, the household appliance accessory, and the method for operating the household appliance may have a number of individual elements, components, units, and method steps that differs from the number stated herein to fulfill a functionality described herein.
[0028] Further advantages will become apparent from the following description of the drawings. The drawings illustrate exemplary embodiments of the invention. The drawings, the description, and the claims contain numerous features in combination. Those skilled in the art will also expediently consider the features individually and combine them into useful further combinations.
[0029] They show:
[0030] Fig. 1 is a schematic representation of a household appliance system with a household appliance and a cooking appliance,
[0031] Fig. 2 shows at least a partial circuit diagram of the household appliance system,
[0032] Fig. 3 is a graph of exemplary power versus frequency,
[0033] Fig. 4 is a graph of an example current versus power,
[0034] Fig. 5 is a flowchart of a method for operating the household appliance,
[0035] Fig. 6 is a schematic representation of a small household appliance with a household appliance device and
[0036] Fig. 7 is a schematic representation of a cooking utensil with a household appliance device.
[0037] Figure 1 shows a schematic representation of a household appliance system 40a with a household appliance device 10a and a household appliance 44a. The household appliance system 40a is designed as a cooking system 42a. The household appliance device 10a is designed as a cooktop device 20a.
[0038] The household appliance system 40a includes a household appliance accessory 52a. The household appliance accessory 52a includes the household appliance device 10a and is designed to be placed beneath a food storage unit 50a. The household appliance accessory 52a is configured as a cooking accessory 54a. The food storage unit 50a is configured here as an induction cooker. Alternatively, another configuration of the food storage unit 50a that would be deemed appropriate by a person skilled in the art would be conceivable.
[0039] The household appliance accessory 52a and the food storage unit 50a are fixed to one another in the support state, allowing them to be separated without tools. Alternatively, it would be conceivable for the food storage unit 50a to simply be placed on the household appliance accessory 52a in the support state. The household appliance device 10a has a receiving coil 12a for wirelessly receiving inductive energy. The household appliance 44a is provided for transmitting the inductive energy to the receiving coil 12a. The household appliance 44a is designed as a cooktop 56a. The household appliance 44a has a supply coil 34a for providing the inductive energy to the receiving coil 12a.
[0040] The household appliance system 40a has a mounting plate 36a for mounting the household appliance accessory 52a to the inductive power supply of the receiving coil 12a. The supply coil 34a is arranged below the mounting plate 36a.
[0041] The household appliance device 10a has an induction coil 14a for wirelessly inductively supplying energy to a further unit 30a during an induction process. The further unit 30a is, in this case, the food storage unit 50a. The inductive energy supply in this case is an inductive heating of the further unit 30a. The induction process in this case is a heating process.
[0042] The receiving coil 12a is designed to receive energy independently of the induction process of the induction coil 14a. The household appliance device 10a has a shielding element 28a for magnetically shielding the induction coil 14a. The shielding element 28a is arranged between the household appliance 44a and the further unit 30a. The shielding element 28a is arranged between the induction coil 14a and the receiving coil 12a. The shielding element 28a is designed to shield the induction coil 14a and the further unit 30a from an electromagnetic field of the supply coil 34a and the receiving coil 12a.
[0043] The household appliance 44a has a further shielding element 38a below the supply coil 34a.
[0044] The induction coil 14a is intended to be operated at the same frequency as the receiving coil 12a during the induction process.
[0045] Figure 2 shows at least a partial circuit diagram of the household appliance system 40a. The receiving coil 12a and the induction coil 14a are electrically connected to supply the induction coil 14a via a switch 16a. The induction coil 14a can be supplied via a wired connection via the receiving coil 12a. The supply to the induction coil 14a can be interrupted by the switch 16a. The switch 16a is part of the household appliance device 10a.
[0046] The household appliance device 10a has a functional unit 18a for providing at least one function. The functional unit 18a is embodied, for example, as a temperature sensor 32a. The functional unit 18a rests against the food storage unit 50a, at least in the set-up state (see Figure 1). Alternatively or additionally, the functional unit 18a can have a different configuration and / or arrangement that would be deemed appropriate by a person skilled in the art.
[0047] The receiving coil 12a and the functional unit 18a are electrically connected to supply the functional unit 18a via a further switch 26a. The functional unit 18a can be supplied via a wired connection via the receiving coil 12a. The supply to the functional unit 18a can be interrupted via the further switch 26a. The further switch 26a is part of the household appliance device 10a.
[0048] The induction coil 14a and the functional unit 18a can each be supplied individually in individual operating states. The functional unit 18a and the induction coil 14a are connected in parallel. The switch 16a and the further switch 26a are connected in parallel. The switch 16a is in a closed position in a single induction state, in which only the induction coil 14a is supplied by the receiving coil 12a. The further switch 26a is in an open position in the single induction state. The further switch 26a is in a closed position in a single functional state, in which only the at least one functional unit 18a is supplied by the receiving coil 12a. The switch 16a is in an open position in the single functional state.
[0049] In a hybrid operating state, the induction coil 14a and the functional unit 18a can be jointly supplied by the receiving coil 12a. The switch 16a and the further switch 26a are each in a closed position in a hybrid operating state.
[0050] The induction coil 14a can be supplied by the receiving coil 12a in an induction state. The induction state includes the single induction state and the hybrid state. At least the switch 16a is in the closed position in the induction state. The induction process takes place in the induction state. The functional unit 18a can be supplied by the receiving coil 12a in a functional state. The functional state includes the single functional state and the hybrid state. At least the further switch 26a is in the closed position in the functional state.
[0051] The household appliance device 10a has a resonant capacitance 22a, which is connected between the receiving coil 12a and the induction coil 14a in at least one operating state. The operating state is at least the induction state. The resonant capacitance 22a is connected in series with the receiving coil 12a. The resonant capacitance 22a is connected in series with the induction coil 14a at least in the induction state. The resonant capacitance 22a is connected in series with the functional unit 18a at least in the functional state.
[0052] The household appliance device 10a has a compensation capacitor 24a, which is connected in parallel with the induction coil 14a, at least in the operating state. Alternatively, it is conceivable that the compensation capacitor 24a is connected in series with the induction coil 14a, at least in the operating state. The compensation capacitor 24a is electrically connectable to the receiving coil 12a via the switch 16a. Alternatively, it is conceivable that the household appliance device 10a is designed without a compensation capacitor 24a.
[0053] Figure 3 shows a graph with an axis 60a of an exemplary power of the current in watts versus an axis 62a of an applied frequency at the supply coil 34a in kilohertz. The receiving coil 12a and the induction coil 14a are identical to one another in the present case. The power in the single induction state is represented by a curve 64a. A curve 66a describes the power in the single function state. The power in the hybrid state is described by a curve 68a. The household appliance device 10a, in particular the induction coil 14a and the receiving coil 12a, has similar power and frequency ranges in the single induction state, the single function state, and the hybrid state of the household appliance device 10a for a resonance condition.
[0054] Figure 4 shows a graph with an axis 70a of an exemplary current intensity in amperes versus an axis 72a of the current power in watts. The current intensity in the single-induction state is represented by a curve 74a. A curve 76a describes a power output in the single-function state. A power output in the hybrid state is described by a curve 78a. The household appliance device 10a, in particular the induction coil 14a and the receiving coil 12a, have similar current intensity ranges in the single-induction state, the single-function state, and the hybrid state of the household appliance device 10a.
[0055] Figure 5 shows a flowchart of a method for operating the household appliance 10a. The method comprises a receiving step 100a, in which the receiving coil 12a receives the inductive energy. In a further supply step 102a, the energy is transmitted to the induction coil 14a and / or the functional unit 18a depending on the switching position of the switch 16a and the further switch 26a. In the induction process, the energy in the supply step 102a is transmitted to at least the induction coil 14a for the inductive heating of the further unit 30a. In the induction process, the induction coil 14a is operated at the same frequency as the receiving coil 12a.
[0056] Further exemplary embodiments of the invention are shown in Figures 6 and 7. The following descriptions are essentially limited to the differences between the exemplary embodiments, whereby reference can be made to the description of the exemplary embodiment in Figures 1 to 5 with regard to identical components, features and functions. To distinguish the exemplary embodiments, the letter a in the reference numerals of the exemplary embodiment in Figures 1 to 5 has been replaced by the letters b and c in the reference numerals of the exemplary embodiments in Figures 6 and 7. With regard to components with the same designation, in particular with regard to components with the same reference numerals, reference can in principle also be made to the drawings and / or the description of the exemplary embodiment in Figures 1 to 5.
[0057] Figure 6 shows a small household appliance 58b with a household appliance device 10b. The small household appliance 58b is embodied, for example, as a rice cooker. The small household appliance 58b has a further unit 30b embodied as a food receiving unit 50b.
[0058] Figure 7 shows a cooking utensil 46c with a household appliance 10c and with a food receiving unit 50c configured as a further unit 30c, which is arranged above the household appliance 10c. The household appliance 10c and the food receiving unit 50c are firmly connected to one another. The cooking utensil 46c is configured as a cooking utensil 48c.
[0059] Of multiple objects, only one is provided with a reference symbol in the figures.
[0060] Reference symbol
[0061] 10 household appliance device
[0062] 12 receiving coil
[0063] 14 Induction coil
[0064] 16 switches
[0065] 18 functional unit
[0066] 20 Hob device
[0067] 22 Resonance capacity
[0068] 24 Compensation capacity
[0069] 26 additional switches
[0070] 28 Shielding element
[0071] 30 additional units
[0072] 32 Temperature sensor
[0073] 34 Supply coil
[0074] 36 mounting plate
[0075] 38 additional shielding element
[0076] 40 household appliance system
[0077] 42 Cooking system
[0078] 44 household appliances
[0079] 46 cooking utensils
[0080] 48 cookware
[0081] 50 food intake units
[0082] 52 household appliance accessories
[0083] 54 cooking accessories
[0084] 56 hob
[0085] 58 small household appliances
[0086] 60 axle
[0087] 62 Axis
[0088] 64 Curve Curve Curve Axis Axis Curve Curve Curve Receiving step Supply step
Claims
Claims 1. Household appliance device (10a; 10b; 10c), in particular a hob device (20a), with a receiving coil (12a) for wirelessly receiving inductive energy and with an induction coil (14a) for wirelessly supplying inductive energy, in particular heating, to a further unit (30a; 30b; 30c) during an induction process, wherein the receiving coil (12a) is provided to receive energy independently of the inductive energy supply of the induction coil (14a) and the induction coil (14a) is provided to be operated at the same frequency as the receiving coil (12a) during the induction process.
2. Household appliance device (10a; 10b; 10c) according to claim 1, characterized in that the receiving coil (12a) and the induction coil (14a) can be electrically connected to supply the induction coil (14a) by a switch (16a).
3. Household appliance device (10a; 10b; 10c) according to claim 1 or 2, characterized by a functional unit (18a) for providing at least one function, wherein the receiving coil (12a) and the functional unit (18a) are electrically connectable to supply the functional unit (18a) by a further switch (26a).
4. Household appliance device (10a; 10b; 10c) according to claim 3, characterized in that the induction coil (14a) and the functional unit (18a) can each be supplied individually in individual operating states.
5. Household appliance device (10a; 10b; 10c) according to claim 3 or 4, characterized in that the induction coil (14a) and the functional unit (18a) can be supplied jointly by the receiving coil (12a) in a hybrid operating state.
6. Household appliance device (10a; 10b; 10c) according to one of the preceding claims, characterized by a resonance capacitance (22a) which is connected between the receiving coil (12a) and the induction coil (14a) in at least one operating state.
7. Household appliance device (10a; 10b; 10c) according to one of the preceding claims, characterized by a compensation capacitor (24a) which is connected in parallel or in series to the induction coil (14a) in at least one operating state.
8. Household appliance device (10a; 10b; 10c) according to one of the preceding claims, characterized by a shielding element (28) for magnetic shielding of the induction coil (14a).
9. Household appliance device (10a; 10b; 10c) according to claim 6, characterized in that the shielding element (28a) is arranged between the induction coil (14a) and the receiving coil (12a).
10. Household appliance system (40a), in particular cooking system (42a), with a household appliance device (10a; 10b; 10c) according to one of the preceding claims and with a household appliance (44a) for transmitting the inductive energy to the receiving coil (12a).
11. Cooking utensils (46c), in particular cooking utensils (48c), with a household appliance device (10c) according to one of claims 1 to 9 and with a food receiving unit (50c) which is arranged above the household appliance device (10c).
12. Small household appliance (58b) with a household appliance device (10b) according to one of claims 1 to 9.
13. Household appliance accessory (52a), in particular cooking accessory (54a), with a household appliance device (10a) according to one of claims 1 to 9, for placement under a food storage unit (50a) and / or a small household appliance.
14. Method for operating a household appliance device (10a; 10b; 10c) according to one of claims 1 to 9.