Cooking utensil, procedure for operating a cooking system, and cooking system

Abstract

A cooking utensil (1) comprising a base (2), a wall (3), and a magnetic field sensor (4), wherein the base (2) and the wall (3) define a receiving volume (5). The magnetic field sensor (4) is located on the wall (3) to determine the magnetic field strength of an electromagnetic interference field, thereby allowing the effect of said field on the wall (3) to be estimated. A cooking system (200) comprising a control unit (50), a cooking plate assembly (100), and cooking utensils (1) according to the invention. The cooking plate assembly (100) comprises a platform (101) for placing the cooking utensils (1) and an induction coil (102), wherein the induction coil (102) provides an electromagnetic field (103) for heating the placed cooking utensils (1).The control device (50) is suitable and configured to draw conclusions about the expected heating of the wall (3) by the electromagnetic field (103) based on a value (10) of the electromagnetic field intensity determined by the magnetic field sensor (4). Method for operating a cooking system (200) according to the invention, wherein the magnetic field sensor (4) determines a value (10) of an electromagnetic field intensity and wherein the control device (50) draws conclusions about the expected heating of the wall (3) by the electromagnetic field (103) based on the determined value (10).

Description

[0001] The present invention relates to a cooking system comprising a cooktop and cookware. The cookware includes at least one base, at least one wall, and at least one magnetic field sensor, wherein the base and the wall define at least one receiving volume. Furthermore, the present invention relates to a cooking system comprising at least one such cookware, at least one control unit, and at least one cooktop assembly. The cooktop assembly comprises at least one support surface for placing cookware and at least one induction coil, wherein the induction coil provides at least one electromagnetic field for heating the placed cookware. The present invention also relates to a method for operating such a cooking system.

[0002] A cooktop for inductive heating of cookware is known from publications WO 2022 048 836 A1 and US 2012 132 646 A1.

[0003] Automated and semi-automated programs and support functions have become common in a wide variety of household appliances. In particular, cooking appliances, cookware, and / or cooking systems often feature one or more such automatic and / or support programs or functions that assist users in preparing food and / or largely monitor and / or control the process automatically.

[0004] For example, an automatic program can assist a user in warming or heating food in cookware placed on a hob, such as a pot, pan and / or the like, or can cook or prepare food largely independently, optimally and precisely, especially by means of a suitable temperature profile.

[0005] In order to obtain the parameters and information important for such a supportive and / or largely automatic preparation process, many of the well-known cookware items often have different sensory components or sensor elements, such as at least one temperature sensor to determine at least one temperature.

[0006] Cookware with sensors is known from publications WO 2016042123 A1 and US 2020 045 781 A1.

[0007] The printed document FR 3 098 676 A1 reveals the communication between the hob and the cookware.

[0008] However, such sensors in known cookware and / or the values ​​determined by such sensors are frequently, especially when the sensors are located on the cookware wall, directly and / or indirectly influenced and / or even disrupted by external disturbances such as temperature gradients and / or electric and / or magnetic fields. This makes a reliable determination of parameters and information important for the cooking process essentially impossible or only possible to a limited extent. For example, electromagnetic fields acting laterally on known cookware, especially local electromagnetic fields, can significantly influence temperature measurements and thus cause, for example, longer cooking times due to an overestimation of the actual cooking temperature, inhomogeneous temperature distributions, and / or a fluctuating impression of boiling.

[0009] It is therefore the object of the present invention to provide a cookware which enables reliable detection, in particular estimation, of possible disturbances on a cookware.

[0010] This problem is solved by a method having the features of claim 1 and by a cooking system having the features of claim 9. Preferred embodiments of the invention are the subject of the dependent claims. Further advantages and features of the invention will become apparent from the exemplary embodiments.

[0011] The cookware according to the invention comprises at least one base, at least one wall, and at least one magnetic field sensor, wherein the base and the wall define at least one receiving volume. The magnetic field sensor is located on the wall and / or a handle of the cookware in order to determine the magnetic field strength of an electromagnetic interference field, so that the effect of the electromagnetic interference field on the wall can be estimated or at least approximately determined.

[0012] An electromagnetic interference field is, in particular, an electromagnetic field that occurs and / or is provided at least partially next to and / or to the side of the cookware and that does not, in particular, heat up the bottom of the cookware.

[0013] Preferably, the electromagnetic interference field disrupts at least one function of a sensor element, such as a temperature sensor. Preferably, an electromagnetic interference field warms and / or heats at least one wall and / or at least one sensor element, particularly unintentionally and / or partially. Preferably, an electromagnetic interference field acts, particularly locally, non-homogeneously and / or unevenly, on the wall, particularly an outer surface of the cookware.

[0014] Preferably, the magnetic field sensor is suitable and configured to determine at least one value of a magnetic field strength and / or a magnetic flux, in particular by means of an induced voltage. In advantageous embodiments, the magnetic field sensor is arranged and / or mounted on an outer surface of the wall. Preferably, the magnetic field sensor is integrated into the wall at least partially.

[0015] In suitable further developments, the cookware includes at least one control unit. Preferably, the control unit provides at least a partial evaluation unit for evaluating at least one signal and / or value, in particular one determined by the magnetic field sensor.

[0016] In advantageous further developments, the control device is suitable and designed to draw conclusions about an expected heating of the wall and / or the magnetic field sensor by such an electromagnetic field, based on at least one value of a magnetic field strength.

[0017] In appropriate further training, the cookware includes at least one dispensing device for the output of at least one optical, acoustic and / or haptic signal.

[0018] Preferably, the cookware includes at least one battery element.

[0019] The present invention offers many advantages. A significant advantage is that the magnetic field sensor is located on the wall to determine the magnetic field strength of an electromagnetic interference field, thus allowing the effect of the electromagnetic interference field on the wall to be estimated.

[0020] This makes it particularly reliable to detect electromagnetic interference fields, such as those that can be provided by an electromagnetic field acting laterally on the cookware.

[0021] Furthermore, the ability to determine the magnetic field strength of an electromagnetic interference field allows for a particularly reliable assessment of potential interference effects on the cookware. For example, the measured field strength of an electromagnetic interference field can indicate, in particular, localized heating of the cookware wall in the vicinity of the magnetic field sensor. This allows for the correction or adjustment of temperature values ​​and / or other measurement signals obtained by sensor elements located on the cookware wall, especially in the vicinity of the magnetic field sensor. This enables, for instance, automatic programs to reliably assist users when heating food in cookware placed on a cooktop, and / or to reliably cook or prepare food optimally and precisely using a suitable temperature profile.

[0022] Preferably, the magnetic field sensor is provided at least partially by a Hall sensor element, a coil element, and / or a conductor loop. This allows for particularly reliable determination of the magnetic field strength of an electromagnetic interference field.

[0023] In advantageous embodiments, the coil element is suitable and / or configured to at least partially absorb energy provided by an electromagnetic field. Preferably, energy absorbed by the coil element is at least partially stored by the battery element.

[0024] Preferably, the Hall sensor element, the coil element, and / or the conductor loop are designed parallel to the base of the cookware. This orientation ensures that this part of the magnetic field sensor is aligned parallel to the induction coils of the corresponding cooktop when the cookware is placed on the cooktop. This allows the magnetic field sensor to reliably assess the influence of the magnetic field on the cookware's wall. Furthermore, this advantageous configuration enables applications of this part of the magnetic field sensor, such as energy harvesting from the induction field.

[0025] Preferably, the coil element provides at least one communication device, in particular for near-field communication. In suitable further developments, the coil element is suitable and configured to send and / or receive at least one piece of information, in particular before, during and / or after a cooking process.

[0026] In advantageous embodiments, the magnetic field sensor, in particular the coil element, can be operated in at least one communication mode and / or an interference field detection mode to determine at least one value of a magnetic field strength. Preferably, the magnetic field sensor is operated in communication mode before and / or after a cooking process and in interference field detection mode during a cooking process. Preferably, switching between communication mode and interference field detection mode is possible manually and / or automatically.

[0027] It is particularly preferred that at least one temperature sensor is assigned to the wall.

[0028] A temperature sensor is, in particular, a sensor for determining at least one value of a temperature, such as a thermocouple, a thermistor and / or similar device.

[0029] Preferably, the temperature sensor is arranged and / or mounted on the wall, at least in sections. Preferably, the temperature sensor is integrated into the wall, at least in sections.

[0030] In suitable further developments, at least two or more temperature sensors are assigned to the wall. Preferably, at least one temperature sensor is assigned to the bottom.

[0031] In advantageous further developments, the temperature sensor at least partially provides the magnetic field sensor. This makes the cookware particularly cost-effective.

[0032] In particular, the magnetic field sensor is provided at least sectionally by at least two leads of a thermocouple and / or is formed at least sectionally.

[0033] Preferably, the two leads enclose at least a large area, allowing a particularly high voltage to be induced in the thermocouple leads. This enables the detection of low or even very low magnetic field strengths and / or magnetic fluxes, making such a magnetic field sensor particularly sensitive.

[0034] In suitable further developments, the temperature sensor is essentially positioned in the immediate vicinity of the magnetic field sensor. This allows the temperature sensor to determine the wall temperature particularly in those areas where the magnetic field sensor can also be used to estimate the effect of electromagnetic interference on the wall. Thus, for example, particularly reliable conclusions can be drawn as to whether it is advantageous to correct a temperature determined by the temperature sensor or even to disregard it, especially when running automated programs.

[0035] Preferably, the temperature sensor is arranged directly adjacent to, in particular laterally next to, the magnetic field sensor and / or between the wall and the magnetic field sensor, in particular on the wall.

[0036] Particularly preferred is the provision of at least one communication device, especially for sending and / or receiving at least one signal.

[0037] In advantageous further developments, the communication device is suitable and configured to transmit at least one value of a magnetic field strength and / or a value of a temperature, in particular via WLAN, ZigBee, NFC, Bluetooth and / or a similar communication connection. Preferably, the communication device transmits at least one signal to a cooktop device and / or a control device.

[0038] The cooking system according to the invention comprises at least one control unit, at least one cooking surface, and at least one cookware unit as previously described. The cooking surface comprises at least one platform for placing cookware and at least one induction coil, the induction coil providing at least one electromagnetic field for heating the placed cookware. The control unit is designed and configured to use at least one electromagnetic field strength value determined by the magnetic field sensor to infer the expected heating of the cookware wall by the electromagnetic field.

[0039] In particular, the control device is suitable and designed to make a prediction, forecast and / or estimate of the expected heating of the wall by the electromagnetic field, based on at least one value determined, preferably in the immediate vicinity of the wall.

[0040] Preferably, the control device is suitable and designed to draw conclusions about an expected heating of the wall, which is preferably caused at least partially by the direct action of the electromagnetic field on the wall and / or a temperature sensor element.

[0041] Preferably, the control unit is integrated into the cookware and / or cooktop. Depending on the task and training, the control unit can also be provided by a mobile device, such as a smartphone, tablet, and / or similar device.

[0042] In appropriate further training, the cooktop equipment includes at least one output device for outputting at least one optical, acoustic and / or haptic signal.

[0043] Preferably, the cooktop device includes at least two or more induction coils.

[0044] The cooking system according to the invention also has the advantages of a cookware according to the invention described above.

[0045] Preferably, the cookware and / or the hob equipment are in communication with the control unit, at least temporarily, in particular by means of a communication device.

[0046] In the inventive method for operating a cooking system as described above, the magnetic field sensor determines at least one value of an electromagnetic field strength and the control device draws conclusions about the expected heating of the wall by the electromagnetic field based on the at least one determined value.

[0047] In particular, a prediction, forecast, approximation and / or estimation of the expected heating of the wall by the electromagnetic field is made based on at least one value determined, preferably in the immediate vicinity of the wall.

[0048] Preferably, the cookware is positioned on the surface in such a way that the induction coil generates at least one interference field, in particular to the side of the cookware, and the control device, based on at least one value of an electromagnetic field strength of the interference field determined by means of the magnetic field sensor, draws conclusions about an expected heating of the wall by the electromagnetic interference field.

[0049] Preferably, the electromagnetic field provided by the induction coil constitutes an electromagnetic interference field at least when the cookware, in particular its base, is not completely, preferably only 5 / 6 and / or 4 / 3, preferably only 2 / 3 and / or 1 / 2 and / or 1 / 3 or even less, positioned above the induction coil. Depending on the objective and design, the electromagnetic field provided by the induction coil can also constitute an electromagnetic interference field at least when an area above and / or over the induction coil is not completely, preferably only 5 / 6 and / or 4 / 3, preferably only 2 / 3 and / or 1 / 2 and / or 1 / 3 or even less, covered by the base of the cookware.

[0050] In appropriate further training, at least a magnetic field strength and / or at least a magnetic flux is determined using the magnetic field sensor.

[0051] The method according to the invention also has the advantages previously described for the cookware and / or cooking system according to the invention.

[0052] Particularly preferably, at least one temperature sensor is assigned to the wall of the cookware, which determines at least one temperature value, whereby any expected heating of the wall by the electromagnetic field is taken into account during further processing of the determined value. This makes the temperature value determined by the at least one temperature sensor particularly reliable.

[0053] Further processing includes, in particular, evaluation, preferably using the control and / or evaluation unit.

[0054] Preferably, the expected heating of the wall due to the electromagnetic field during the execution and / or running of, in particular, automatic, operating and / or cooking programs is taken into account. For example, a temperature value to be reached at a temperature sensor during a cooking program, e.g., a boiling point, can be increased, at least temporarily.

[0055] In appropriate training courses, the temperature value determined by means of a temperature sensor is corrected to a lower temperature at least temporarily.

[0056] Preferably, the determined value is compared at least temporarily with a predetermined threshold.

[0057] Preferably, the control unit and / or the evaluation unit compares the determined value with the threshold value.

[0058] In advantageous further developments, the determined value of a temperature is corrected, in particular to a lower temperature, if the determined value of an electromagnetic field strength is at least temporarily greater than the predetermined threshold.

[0059] Preferably, at least one temperature value from a temperature sensor, optionally also several temperature values ​​from several and / or all temperature sensors, is corrected, at least temporarily, in particular to a lower temperature.

[0060] In appropriate training courses, at least one temperature value from a temperature sensor is not taken into account.

[0061] Preferably, the cookware includes at least one dispensing device and / or is operatively connected to at least one dispensing device. Preferably, the dispensing device outputs at least one signal when the measured value of an electromagnetic field strength is at least temporarily greater than the predetermined threshold.

[0062] In advantageous advanced training, the output device signals to a user, in particular by means of an optical, acoustic and / or haptic signal, that the value is at least temporarily greater than the predetermined threshold.

[0063] Depending on the task and training, the output device can also essentially continuously output the determined value of the electromagnetic field strength and / or display it using a display element, e.g. depending on the position of the cookware on the surface.

[0064] It is also possible and advantageous that, especially when the energy element has a low charge level, the dispensing device signals to a user to position the cookware on the surface where a large or even very large interference field is provided, in order to enable the battery element to be charged as quickly as possible.

[0065] Preferably, the dispensing device signals to a user to position cookware in a different position on the work surface, for example to reduce the magnetic field strength of an interfering field.

[0066] Preferably, the threshold value depends on the power of the induction coil, in particular on the field strength provided in the immediate vicinity of the induction coil.

[0067] Preferably, the threshold value is increased when the power of the induction coil or a power level of the cooktop device is increased.

[0068] In suitable further developments, the magnetic field sensor is provided at least sectionally by at least one coil element, which at least partially absorbs at least some of the energy provided by the electromagnetic field.

[0069] Preferably, energy absorbed by the coil element is used to power a temperature sensor and / or other components enclosed by the cookware. Preferably, the absorbed energy is stored, at least temporarily, in a battery element.

[0070] Particularly preferably, the magnetic field sensor is provided at least sectionally by at least one coil element, and the coil element sends and / or receives at least one piece of information.

[0071] Preferably, the coil element sends at least one piece of information to a mobile device, the cooktop unit, and / or the control unit. Preferably, the coil element receives at least one piece of information from a mobile device, the cooktop unit, and / or the control unit.

[0072] In appropriate further training, the coil element is suitable and configured to send and / or receive at least one piece of information, particularly before, during, and / or after a cooking process. Preferably, the coil element is suitable and configured to communicate with at least one mobile device and / or the cooktop. For example, the coil element can transmit cookware-specific information and / or data, such as pot size, battery charge level, usage data, error messages, and / or similar information, to a mobile device and / or the cooktop. Depending on the task and configuration, at least one signal for identifying the cookware and / or registering the cookware with the cooktop, such as a Bluetooth and / or Wi-Fi key, can also be transmitted.

[0073] Further advantages and features of the present invention will become apparent from the exemplary embodiment, which is explained below with reference to the accompanying figures.

[0074] The figures show: Figure 1 is a purely schematic representation of an embodiment of a cooking vessel according to the invention in a perspective view; Figure 2 is a purely schematic representation of an embodiment of a cooking system according to the invention with a cooking vessel in a perspective view; Figure 3 is a purely schematic representation of another embodiment of a cooking system according to the invention with a cooking vessel in a perspective view; Figure 4 is a purely schematic representation of another embodiment of a cooking system according to the invention with a cooking vessel in a perspective view; and Figure 5 is a purely schematic representation of another embodiment of a cooking system according to the invention with a cooking vessel in a perspective view.

[0075] In Figure 1Figure 1 is a purely schematic embodiment of a cookware 1 according to the invention shown in a perspective view.

[0076] In the embodiment shown here, the cookware 1 comprises a base 2 and a wall 3, which define a receiving volume 5. The wall 3 has an outer surface 15 and an inner surface 16 facing the receiving volume 5.

[0077] Furthermore, the cookware 1 includes two magnetic field sensors 4, which are arranged on the outer surface 15, in order to determine the magnetic field strength of an electromagnetic field and / or interference field, so that the effect of the electromagnetic field and / or interference field on the wall can be estimated. For example, heating caused by a direct, essentially lateral, effect of an electromagnetic field and / or interference field on the wall 3 can be estimated.

[0078] Thus, the cookware 1 shown here in a purely schematic way is suitable and designed to be used in a cooking system 200 according to the invention.

[0079] Because at least two magnetic field sensors 4 are arranged on the outer surface 15, the local effect of the electromagnetic field and / or interference field on the respective sections of the wall 3, in which the magnetic field sensors 4 are located, can be estimated particularly reliably. Furthermore, a local difference in the magnetic field strength of the electromagnetic field and / or interference field can be determined using the two magnetic field sensors 4, thus enabling the detection of an inhomogeneous effect of an electromagnetic field / interference field on the wall 3. Therefore, the values ​​determined by the two magnetic field sensors 4 can be used to infer a possible inhomogeneous heating of the wall 3.

[0080] In the embodiment shown here, one magnetic field sensor 4 is designed as a Hall sensor element 6 and the other magnetic field sensor 4 as a coil element 7. Depending on the application and design, a magnetic field sensor 4 can also be provided, at least partially, by a temperature sensor, such as a thermocouple.

[0081] Furthermore, the cookware 1 here includes two temperature sensors 8 assigned to the wall 3, which are located here on the outside 15 of the wall 3 in the immediate vicinity of the magnetic field sensors 4 and are suitable and designed here to determine at least one value of a temperature 11 each.

[0082] In the embodiment shown here, the values ​​of a temperature 11 determined here by the temperature sensors 8 can each be corrected to lower temperatures by means of the values ​​10 determined here by the two magnetic field sensors 4.

[0083] Depending on the task and design, as shown here purely schematically, another temperature sensor 13 can also be assigned to the floor 2.

[0084] In the embodiment shown here, the values ​​10, 11 determined by the magnetic field sensors 4 and the temperature sensors 8, 13 can be transmitted to, for example, a control unit 50 or an evaluation unit by means of a communication device 9 which is included here in a handle element 14.

[0085] In Figure 2 The figure shown is a purely schematic embodiment of a cooking system 200 according to the invention, comprising a cooking vessel 1 according to the invention and a cooking hob device 100, in a perspective view.

[0086] In the embodiment shown here, the cooktop device 100 comprises a platform 101 for placing cookware 1 and two induction coils 102, each of which provides an electromagnetic field 103 for heating the placed cookware 1. As indicated schematically by an arrow, the electromagnetic field 103 is partially provided laterally to the side of the cookware 1, so that the electromagnetic field 103 provided by the two induction coils 102 in the illustrated embodiment constitutes an electromagnetic interference field.

[0087] Furthermore, the cooktop unit 100 includes a control unit 50. Depending on the task and design, the control unit 50 can also be provided by the cookware 1 and / or a mobile device.

[0088] In the embodiment shown here, the cookware 1 is as shown in Figure 1The purely schematic representation includes two magnetic field sensors 4 assigned to the wall 3 in order to determine the magnetic field strength of an electromagnetic field and / or interference field, so that the effect of the electromagnetic field and / or interference field on the wall can be estimated.

[0089] As in Figure 1 In the embodiment shown here, the values ​​10 determined by the magnetic field sensors 4 can also be transmitted to the control unit 50 by means of a communication device 9 which is incorporated here in a handle element 14.

[0090] The control device 50 is suitable and designed to draw conclusions about the expected heating of the wall 3 by the electromagnetic field 103 based on a value 10 determined by means of the two magnetic field sensors 4.

[0091] Thus, the cooking system 200 shown here can be used to carry out the inventive method for operating a cooking system 200.

[0092] In the embodiment shown here, a temperature value 11 is determined by means of the two temperature sensors 8 and transmitted to the control unit via the communication device 9. During further processing and / or evaluation of the values ​​11, the control unit 50 takes into account the expected heating of the wall due to the electromagnetic field 103. For example, the two determined values ​​10 can each be compared with a predetermined threshold value S1. If either of the two determined values ​​10 exceeds the predetermined threshold value S1, such a temperature value 11 is corrected to a lower value and / or is not considered further during further processing by the control unit 50.

[0093] Thus, a corrected value of a determined temperature value 11 essentially represents the temperature of the wall 3, which was achieved by heat input into the wall 3 via the base 2 and / or food placed in the cookware 1. This corrected value therefore takes into account heat input into the wall 3 from a lateral electromagnetic field 103 and / or interference field provided by the induction coils 102, and the associated increase in the determined temperature value 11. Such a corrected value is therefore particularly reliable and represents a temperature of the wall 3 achieved essentially through homogeneous heating of the wall 3.

[0094] In the embodiment shown here, the threshold value S1 depends on the power of the induction coils 102, so that the threshold value S1 increases with an increasing power and / or power level of the two induction coils 102.

[0095] In Figure 3 A purely schematic representation shows another embodiment of a cooking system 200 according to the invention, with a cooking vessel 1 according to the invention and with a cooking hob device 100.

[0096] In the embodiment shown here, the cooktop device 100 also comprises a mounting surface 101 and two induction coils 102, which provide an electromagnetic field 103. Since an area directly above the two induction coils 102 is only partially covered by the base 2 of the cookware 1, the induction coils 102 provide an electromagnetic field that is partially located to the side of the cookware 1 and acts as an electromagnetic interference field.

[0097] As in Figure 1In the embodiment shown here, the cookware 1 comprises two magnetic field sensors 4 and two temperature sensors 8, wherein the temperature sensors 8 are each arranged in the immediate vicinity of one of the magnetic field sensors 4. The magnetic field sensors 4 are assigned to the wall 3 in order to determine the magnetic field strength of an electromagnetic field and / or interference field, so that the effect of the electromagnetic field and / or interference field on the wall can be estimated.

[0098] Unlike the Figures 1 and 2 The cooking vessel 1 here comprises a control unit 50, a communication unit 9, and a dispensing unit 12, each of which is integrated into a handle element 14. Depending on the task and design, the cooking vessel 1 can also be operatively connected to a dispensing unit 12.

[0099] In the embodiment shown here, the control device 50 is suitable and designed to draw conclusions about an expected heating of the wall 3 by the electromagnetic field 103 on the basis of a value 10 determined by means of the two magnetic field sensors 4 here.

[0100] Thus, the cooking system 200 shown here can be used to carry out the inventive method for operating a cooking system 200.

[0101] As in Figure 2The two determined values ​​10 are each compared with a predetermined threshold value S1. If either value 10 exceeds the predetermined threshold value S1, the output device 12 outputs a signal to inform a user, for example, that a significant electromagnetic interference field is present and / or that the base 2 of the cookware 1 only partially covers the area directly above the two induction coils 102. Depending on the task and design, the output device 12 can also signal to a user that, for example, the position of the cookware 1 on the surface 101 should be changed to reduce and / or prevent the magnetic field strength of an interference field and thus the resulting heating of the wall 3.

[0102] In Figure 4A further embodiment of a cooking system 200 according to the invention, with a cooking vessel 1 according to the invention and with a cooking hob device 100, is shown in a purely schematic perspective view.

[0103] As in Figure 2 The cooktop assembly 100 comprises a platform 101 for placing cookware 1 and two induction coils 102, each of which provides an electromagnetic field 103 for heating the placed cookware 1. Here too, the two induction coils 102 provide an electromagnetic field 103 as an electromagnetic interference field to the side of the cookware 1. Furthermore, the cooktop assembly includes a control unit 50.

[0104] As in Figure 2In the embodiment shown here, the cookware 1 comprises two magnetic field sensors 4 and two temperature sensors 8, wherein the temperature sensors 8 are each arranged in the immediate vicinity of one of the magnetic field sensors 4.

[0105] The magnetic field sensors are each designed as a coil element 7 and assigned to a wall 3 of the cookware 1 in order to determine the magnetic field strength of an electromagnetic field 103 and / or interference field, so that the effect of the electromagnetic field 103 and / or interference field on the wall can be estimated.

[0106] The magnetic field sensors 4, designed as coil elements 7, can each be operated in a communication mode for communication with a control unit 50 and in an interference field detection mode for determining at least one value 10 of a magnetic field strength. Thus, a coil element 7 can, for example, send information to a mobile device and / or the control unit 50 and / or receive information. The coil elements 7 can also each partially absorb energy provided by the electromagnetic field 103. Depending on the task and design, such energy can be used to power the magnetic field sensors 4, the temperature sensors 8, and / or a communication device 9 enclosed within the cookware 1.

[0107] In Figure 5A further embodiment of a cooking system 200 according to the invention, with a cooking vessel 1 according to the invention and with a cooking hob device 100, is shown in a purely schematic perspective view.

[0108] In the embodiment shown here, the cooktop device 100 comprises a control device 50, an output device 12 for outputting a signal, a mounting surface 101 for mounting cookware 1 and two induction coils 102, which each provide an electromagnetic field 103 for heating mounted cookware 1.

[0109] The cookware 1 comprises a base 2, a wall 3, two temperature sensors 8 and two magnetic field sensors 4, which are arranged on the outside 15 of the wall 3 in order to determine the magnetic field strength of an electromagnetic field 103 and / or interference field, so that the effect of the electromagnetic field 103 and / or interference field on the wall 3 can be estimated.

[0110] In the embodiment shown here, the two temperature sensors 8 are each arranged laterally below one of the magnetic field sensors 4, i.e., each between the wall 3 and one of the two magnetic field sensors 4.

[0111] The cooking system 200 shown here is also suitable and designed to carry out a method of operation according to the invention. Reference symbol list

[0112] 1 Cookware 2 Base 3 Wall 4 Magnetic field sensor 5 Capacity 6 Hall sensor element 7 Coil element 8 Temperature sensor 9 Communication device 10 Value of an electromagnetic field strength 11 Value of a temperature 12 Output device 13 Temperature sensor 14 Handle element 15 Exterior 16 Interior 50 Control device 100 Cooktop device 101 Installation surface 102 Induction coil 103 Electromagnetic field 200 Cooking system S1 Threshold

Claims

1. Method for operating a cooking system (200), the cooking system (200) comprising at least one control device (50), at least one hob device (100) and at least one cooking utensil (1), the cooking utensil (1) comprising at least one base (2), at least one wall (3) and at least one magnetic field sensor (4), at least one receiving volume (5) being delimited by the base (2) and the wall (3), and the magnetic field sensor (4) being associated with the wall (3) and / or a handle element (14) of the cooking utensil (1) in order to determine a magnetic field strength of an electromagnetic field, so that an effect of the electromagnetic field on the wall (3) can be estimated, the hob device (100) comprising at least one placement surface (101) for placement of the cooking utensil (1) thereon, and at least one induction coil (102), the induction coil (102) providing at least one electromagnetic field (103) for heating the placed cooking utensil (1), the control device (50) being suitable and designed to draw conclusions about an expected heating of the wall (3) by the electromagnetic field (103) on the basis of a value (10) of an electromagnetic field strength, which value is determined by means of the magnetic field sensor (4), characterised in that the magnetic field sensor (4) determines at least one value (10) of an electromagnetic field strength and the control device (50) draws conclusions about an expected heating of the wall (3) by the electromagnetic field (103) on the basis of the at least one determined value (10).

2. Method according to the preceding claim, wherein at least one temperature sensor (8) is associated with the wall (3) of the cooking utensil (1), which sensor determines at least one value (11) of a temperature, and an expected heating of the wall by the electromagnetic field (103) is taken into account when further processing the determined value (11).

3. Method according to either of the two preceding claims, wherein the determined value (10) is compared at least temporarily with a predetermined threshold (S1).

4. Method according to the preceding claim, wherein the determined value (11) of a temperature is corrected, in particular corrected to a lower temperature, if the value (10) is at least temporarily greater than the predetermined threshold (S1).

5. Method according to either of the two preceding claims, wherein the cooking utensil (1) comprises at least one output device (12) and / or is operatively connected to at least one output device (12), and the output device (12) outputs at least one signal when the value (10) is at least temporarily greater than the predetermined threshold (S1).

6. Method according to any of the three preceding claims, wherein the threshold (S1) is dependent on a power of the induction coil (102), in particular a field strength provided in the immediate vicinity of the induction coil.

7. Method according to any of the preceding claims, wherein the magnetic field sensor (4) is provided at least in portions by at least one coil element (7) which at least partially absorbs at least an energy provided by the electromagnetic field.

8. Method according to any of the preceding claims, wherein the magnetic field sensor (4) is provided at least in portions by at least one coil element (7), and the coil element (7) sends at least one piece of information, in particular to a mobile terminal and / or the control device, and / or receives same.

9. Cooking system (200) which is designed and configured to carry out the method according to any of the preceding claims.

10. Cooking system (200) according to the previous claim, wherein the cooking utensil (1) and / or the hob device (100) are communicatively connected to the control device (50).

11. Cooking system (200) according to any of the preceding claims, wherein the magnetic field sensor (4) is provided at least in portions by a Hall sensor element (6), a coil element (7) and / or a conductor loop.

12. Cooking system (200) according to the preceding claim, wherein the Hall sensor element (6), the coil element (7) and / or the conductor loop is formed parallel to the base (2) of the cooking utensil (1).

13. Cooking system (200) according to any of the preceding claims, wherein at least one temperature sensor (8) is associated with the wall (3).

14. Cooking system (200) according to the preceding claim, wherein the temperature sensor (8) provides the magnetic field sensor (4) at least in portions.

15. Cooking system (200) according to either of the two preceding claims, wherein the temperature sensor (8) is arranged substantially in the immediate vicinity of the magnetic field sensor (4), and / or at least one communication device (9) is provided.

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