EP3749056A1 - Cooking system and method for operating same - Google Patents

Abstract

Cooking system (100) and method for operating a cooking system (200) comprising a hob device (1), cookware (100) and an evaluation device (50). The hob device (1) comprises a set-up area (2) for setting up cookware (100) and two induction devices (3) for heating the cookware (100) set up on the set-up area (2). The cookware (100) is suitable and designed to be heated by means of an induction device (3). The induction devices (3) of the hob device (1) are each assigned a transmitter device (4) and the cookware (100) is assigned a receiver device (101), the transmitter devices (4) each time sending an assignment signal (5) which is received from the receiver device (101 ) of the cookware (100) is received when the cookware (100) is heated by the corresponding induction device (3). The assignment signals (5) of the individual transmission devices (4) are transmitted with a predetermined time offset and / or the assignment signals (5) of the individual induction devices (3) include different predetermined sequences of electromagnetic excitations as a signature, so that the evaluation device (50) the can assign assignment signals (5) detected by the receiving device (101) to the individual induction devices (3) and thus assign the cookware (100) to an induction device (3).

Description

The present invention relates to a cooking system and a method for operating such a cooking system. The cooking system comprises at least one hob device, at least one cookware and at least one evaluation device, the hob device having at least one installation surface for placing cookware and at least two induction devices for heating the cookware placed on the installation surface. The cookware is suitable and designed to be heated by means of at least one induction device. Furthermore, induction devices are assigned to the hob device in each case at least one transmitting device and the cookware comprises at least one receiving device. In this case, the transmitting devices each transmit at least one assignment signal, at least at times, which is received by the receiving device of the cookware when the cookware is heated by the corresponding induction device.

The automation of cooking processes and the support of a user are becoming more and more important in modern household appliances. Ease of use is also becoming increasingly important.

In the field of hobs, for example, surface induction hobs have become known which do not include any permanently predetermined cooking zones that are clearly displayed on the installation surface of the hob. The cooking zones or the induction coils located underneath an installed pot are then each defined as a cooking zone, with only the corresponding induction coils then being activated.

It is advantageous, if not even necessary, that the hob automatically detects where a pot is placed in order to activate the corresponding induction coils. Various systems have become known for this purpose. For example, systems have also become known in which the induction coils emit signals which are recognized by the standing pot and processed further.

The detection of the coverage of several induction coils, however, is often only achieved with a high level of design effort. In addition, it is difficult to show the exact partial coverage of several induction coils.

It is therefore the object of the present invention to provide an alternative automatic assignment of a pot or the like to one or more induction coils of a hob, with the percentage coverage of individual induction coils preferably also being detected.

This object is achieved by a method with the features of claim 1 and by a cooking system with the features of claim 20. Preferred developments of the invention are the subject matter of the subclaims. Further advantages and features of the invention emerge from the exemplary embodiments.

The method according to the invention is suitable for operating a cooking system comprising at least one hob device, at least one cookware and at least one evaluation device. In this case, the hob device has at least one set-up area for setting up cookware and at least one generator device with at least two induction devices for heating the cookware set up on the set-up area. The cookware is suitable and designed to be heated by means of at least one induction device. Furthermore, at least one transmitting device is assigned to each of the induction devices of the hob device, and the cookware includes at least one receiving device. The transmitting devices each send at least one assignment signal, at least at times, which is received by the receiving device of the cooking utensil when it is heated by the corresponding induction device. According to the invention, the assignment signals of the individual transmission devices are sent out with a predetermined time offset so that the evaluation device can assign the assignment signals detected by the receiving device to the individual induction devices and thus assign the cookware to at least one induction device. Additionally or alternatively, the assignment signals of the individual induction devices can include different predetermined sequences of electromagnetic excitations as a signature.

Cookware does not necessarily have to be in the form of a container to hold food. A target that can be heated by the induction coil of the hob, for example an immersion heater, is also a cookware for the purposes of the present invention. The design of such a target or immersion heater can be found in the publication DE 10 2014 111 817 A1 to which reference is expressly made here.

The evaluation device is in particular in contact or in operative connection with the hob device and / or the cookware, the evaluation device preferably Part of the hob device or can be integrated into it. Depending on the configuration, the evaluation device can, however, also be assigned to the cookware or, preferably, be provided as a separate device which is connected to the cookware and / or the hob device. For example, the function of the evaluation device can also be made available by a central control device for several household appliances, which can be integrated separately from a household appliance or also into a household appliance.

So that the evaluation unit, which can further process the assignment signals received from the cookware, the cookware preferably comprises at least one communication device by means of which information and / or the received assignment signals can be forwarded to the evaluation device. Such a communication device can take place, for example, via Bluetooth, WLAN, radio or the like or comprise such communication means.

The generator device comprises the induction devices, each of which preferably comprises at least one induction coil, by means of which the cookware can be excited or heated. The generator device can preferably also comprise further components of the power electronics and / or be connected to them.

The method according to the invention offers many advantages. A considerable advantage is that the method according to the invention makes it possible to provide automatic recognition of the pot position or the position of cookware on the hob device or on the installation surface of the hob device. It can thus be recognized which induction devices or which induction coils are covered by cookware.

It is particularly advantageous that the time-staggered sending of assignment signals creates the possibility of assigning the assignment signals to a specific induction device. A specific assignment to a specific coil can thus also take place with the same assignment signal and / or with the same signal components due to the time offset.

In addition, it is also possible to recognize that a cookware not only stands on an induction coil or is operated by an induction coil, but that, for example, a cookware only partially or completely covers several induction coils. It is thus possible to recognize the use of several induction devices or induction coils for one cookware.

All these advantages also result when the induction coils or induction devices send out predetermined signal sequences as a signature, which are unique for each induction device, so that conclusions can be drawn about the coverage of certain induction devices.

The assignment signals of the individual induction devices preferably include the same predetermined sequences of electromagnetic excitations, which are distinguished by the time offset. A simple assignment signal can be made available via such signals, for example ping signals. Such an electromagnetic excitation or such a ping signal can preferably be made available by at least one area of the electromagnetic excitation of an induction device, a specific section or area or value of the half-waves used for the excitation being used as the signal.

If the assignment signals of the individual induction devices include different predetermined sequences of electromagnetic excitations as a signature, a clear assignment to a coil can preferably be made via the type of electromagnetic signal of the individual coils. The number of electromagnetic signals in the sequence or the number of ping signals and also the spacing of the ping signals can be used as a distinguishing feature for predetermined sequences of electromagnetic excitations. Even with different signal sequences for the individual induction devices, the time offset can ensure that the signals from the individual coils do not overlap and can be evaluated separately.

At least two generator devices are preferably provided and the assignment signals of the individual induction devices each include a predetermined sequence of at least three electromagnetic excitations as a signature. The first distance between the first electromagnetic excitation and the second electromagnetic excitation encodes the generator device of the corresponding induction device and a second distance between the second electromagnetic excitation and the third electromagnetic excitation codes the corresponding induction device of the corresponding generator device, or vice versa. In this way, even in the case of a hob device with several generators, the individual induction devices can be clearly assigned. The signal sequence contains the information on the corresponding generator device and on the corresponding induction device.

The first distance from generator device to generator device is preferably greater and the second distance from induction device to induction device of a respective generator device becomes smaller. Such a system of signal signatures enables a particularly advantageous, precise and unmistakable coding of the individual induction devices to take place, even when several induction devices are covered.

In advantageous refinements, the electromagnetic excitations received are translated into a unique identification number which corresponds to the coverage of certain induction devices. Because the ping signature is translated into a specific identification number that is unique for the coverage of induction devices, information can be transmitted with a very small volume of data.

When translating the ping signals or the electromagnetic stimuli into an identification number, the method of binary adding can be used, for example and preferably, in order to convert the presence of signals or the absence of signals into a specific number. The resulting identification numbers are unique for a certain signature or signature combination. Info refinements, this identification number can be stored, for example, in a list, with a specific, for example, eight-digit identification number being assigned a consecutive number, for example a two-digit number.

The entire processing of the data is preferably carried out in a chip in the cookware. A table of the individual identification numbers, for example, a concordance list for the 2-digit numbers can be stored on this chip. In this way, information from cookware to the hob can be transmitted with extremely low data. This can be done, for example, via Bluetooth or another suitable data interface.

Particularly preferably, the received predetermined sequences of electromagnetic excitations of the corresponding induction devices are entered in a common time curve, the identification number being determined on the basis of the signal pattern resulting therefrom. In this case, the received signals are brought into an overall context with all received signals, regardless of whether they belong to a specific induction device. Due to the uniqueness of the individual signatures, depending on the design, a unique combination of signatures is created, which can be translated into a specific identification number for the corresponding combination of specific induction devices or individual induction devices.

In expedient further developments, the intensity of at least one assignment signal is taken into account. In this context, intensity is understood to mean in particular the amplitude of electromagnetic radiation or of the electromagnetic signal measured by the receiving device. It can thus be assumed that the corresponding induction device is completely covered at a predetermined maximum amplitude. With lower amplitudes, the corresponding induction devices are only partially covered according to the amplitude.

In expedient refinements, the intensity of the assignment signals is then taken into account in order to conclude that individual induction devices are covered by cooking utensils. This makes it possible to identify the relevant induction devices for an installed cookware using the assigned signals received, and a percentage coverage of the individual induction devices or the individual induction coils can be identified using the intensity or amplitude of the assignment signal. Thus, from the reception of a signal, conclusions can be drawn about the coverage of a coil by a cookware and from the amplitude about the extent of the coverage.

At least one transmission device is preferably provided by at least one induction device. In such a configuration, in particular at least one induction coil of at least one induction device is used as the transmission device. By using an induction coil or a primary coil as the transmission device, a transmission device is made available without great structural effort.

At least one receiving device particularly preferably comprises at least one coil. Such a coil can be arranged in particular in the base of the cookware. By designing the receiving device as a coil or as a secondary coil, a simple technical implementation of a receiving device is achieved.

In expedient developments, at least two receiving devices are provided in the cookware. Either two separate receiving devices can be provided or only one receiving device with two receivers, the signals of the two receivers then preferably being able to be evaluated differently or separately. By providing two separate receiving devices or at least two separately evaluable receivers, it is possible to recognize the orientation of the cookware and also movements of the cookware on the installation surface, whereby the translatory movement of the cookware over the installation surface is basically also possible with only one receiving device is.

At least one orientation of the cookware on the installation surface is preferably recognized. This is possible in particular if at least two receiving devices are provided in the cookware.

In particular, when two or more induction devices are covered by the cookware, at least one operating parameter of at least one induction device is set as a function of the orientation of the cookware. In the case of a roaster, for example, two different cooking areas can be made available by providing two receiving devices, for example in the bottom of the roaster. For example, the two receiving devices can be used to identify which of the two coils is pointing in the direction of the user. In a preferred embodiment of a special cookware, it can be achieved, for example, that with a certain orientation of the cookware on the hob device, a hot searing zone is provided at the front and a somewhat cooler warming zone is provided at the rear. If the pot is placed on the hob in a different orientation, uniform heating of the cookware can be provided, for example. The applicant reserves the right to use cookware with at least two reception devices.

At least one movement of the cookware on the installation surface is preferably recognized. The movement of the cookware over the installation surface can be detected both with a coil and with several receiving devices in the cookware.

The movement of the cookware on the installation surface preferably includes at least one translational and / or at least one rotational movement. It can thus be recognized, for example, whether the cookware is being pulled away from an original position and / or whether the cookware is rotated to the original position. Certain operating parameters can be changed or set by both actions, depending on the configuration. A rotary movement is preferably recognized in a cookware which comprises two receiving devices.

At least one operating parameter of the hob device is preferably set on the basis of the movement. For example, by pulling a piece of cookware away from the induction device currently in use, the hob device can be automatically turned off, at least for this cookware. In addition, it is possible, for example, that the power of the corresponding induction device is changed on the spot by turning the cookware. For example, depending on Design can be increased by turning clockwise, the power is increased when turning counterclockwise.

Preferably, at least one set operating parameter of at least one induction device set for a cookware is transmitted to the then relevant induction device or the relevant induction devices when the cookware is moved. For example, by moving the pot on the installation surface, the setting for a cookware can be transferred to other induction devices if the pot is pushed to another location, for example due to a lack of space or for other reasons.

The transmission devices preferably send the assignment signals during operation of at least one induction device. In such a configuration, for example, the electromagnetic radiation used to heat the cookware or areas thereof can also be used as an assignment signal.

In other expedient refinements or also in addition, the transmitting devices also send the assignment signals when the hob device or the induction devices are not in operation. In a method of this type, relatively low electromagnetic radiation is used, in which case a pot position can also be detected when the hob device is switched off or none of the induction devices is in operation.

A display device on the cookware is preferably activated via the assignment signals and / or a change in the assignment signals. For example, the display of parameters or instructions to the user and / or the monitoring of a cooking process can be supported. The applicant reserves the right to claim such cookware.

The hob system according to the invention comprises at least one hob device, at least one cookware and at least one evaluation device, the hob device comprising at least one set-up area for setting up cookware and at least two induction devices for heating the cookware set up on the set-up area. The cookware is suitable and designed to be heated by means of at least one induction device. The induction devices of the hob device are each assigned at least one transmitting device, the cookware comprising at least one receiving device. The transmitting devices are suitable and designed to send out at least one assignment signal at least at times, the receiving device being suitable and designed to receive these signals when the cookware is heated by the corresponding induction device becomes. According to the invention, the evaluation device is suitable and designed to assign the cookware to the individual induction devices using the assignment signals sent by the transmitting device with a time offset and detected by the receiving device and / or by the detected signatures from the predetermined sequences of electromagnetic excitations of the individual assignment signals make at least one induction device.

The cooking system according to the invention also offers the advantages already mentioned above for the method according to the invention.

At least one transmission device is preferably provided by at least one induction device or at least one induction coil of the at least one induction device. At least one transmitting device is preferably provided by at least one primary coil.

At least one receiving device particularly preferably comprises at least one coil or at least one secondary coil.

In expedient refinements, at least two receiving devices are provided in the cookware. In this case, either two separate receiving devices are preferably provided and / or one receiving device with at least two separately evaluable receivers.

In expedient refinements, the cookware includes at least one display device, which can be activated or supplied with information in particular by means of at least one assignment signal and / or at least one change in the assignment signal.

Further advantages and features of the present invention emerge from the exemplary embodiment which is explained below with reference to the accompanying figures.

Figur 1

eine rein schematische Darstellung eines erfindungsgemäßen Kochsystems in einer perspektivischen Ansicht;

Figur 2

eine rein schematische Darstellung der Bereitstellung von Zuordnungssignalen mittels einer Induktionsspule einer Induktionseinrichtung;

Figur 3

eine rein schematische Darstellung der Zuordnung eines Kochgeschirrs zu bestimmten Induktionseinrichtungen bzw. Induktionsspulen;

Figur 4

eine rein schematische Darstellung der Zuordnung eines Kochgeschirrs zu bestimmten Induktionseinrichtungen bzw. Induktionsspulen;

Figur 5

eine rein schematische Darstellung der Zuordnung eines Kochgeschirrs zu bestimmten Induktionseinrichtungen bzw. Induktionsspulen;

Figur 6

eine rein schematische Darstellung der Zuordnung eines Kochgeschirrs zu bestimmten Induktionseinrichtungen bzw. Induktionsspulen;

Figur 7

eine rein schematische Darstellung der Zuordnung eines Kochgeschirrs zu bestimmten Induktionseinrichtungen bzw. Induktionsspulen;

Figur 8

eine rein schematische Darstellung der Zuordnung eines Kochgeschirrs zu bestimmten Induktionseinrichtungen bzw. Induktionsspulen;

Figur 9

eine rein schematische Darstellung der Zuordnung eines Kochgeschirrs zu bestimmten Induktionseinrichtungen bzw. Induktionsspulen;

Figur 10

eine rein schematische Darstellung der Verwendung eines Kochgeschirrs mit zwei Empfangseinrichtungen in zwei unterschiedlichen Orientierungen auf der Kochfeldeinrichtung;

Figur 11

eine rein schematisch Darstellung der Anordnung eines Kochgeschirrs mit zwei Empfangseinrichtungen auf einer Kochfeldeinrichtung;

Figur 12

eine rein schematische Darstellung der Zuordnung eines Kochgeschirrs zu bestimmten Induktionseinrichtungen bzw. Induktionsspulen gemäß eines weiteren Ausführungsbeispiels;

Figur 13

eine rein schematische Darstellung der Umsetzung von Ping-Signaturen in Identifikationsnummern; und

Figur 14

eine weitere rein schematische Darstellung der Umsetzung von Ping-Signaturen in Identifikationsnummern.

In the figures show:

Figure 1

a purely schematic representation of a cooking system according to the invention in a perspective view;

Figure 2

a purely schematic representation of the provision of assignment signals by means of an induction coil of an induction device;

Figure 3

a purely schematic representation of the assignment of a cookware to certain induction devices or induction coils;

Figure 4

a purely schematic representation of the assignment of a cookware to certain induction devices or induction coils;

Figure 5

a purely schematic representation of the assignment of a cookware to certain induction devices or induction coils;

Figure 6

a purely schematic representation of the assignment of a cookware to certain induction devices or induction coils;

Figure 7

a purely schematic representation of the assignment of a cookware to certain induction devices or induction coils;

Figure 8

a purely schematic representation of the assignment of a cookware to certain induction devices or induction coils;

Figure 9

a purely schematic representation of the assignment of a cookware to certain induction devices or induction coils;

Figure 10

a purely schematic representation of the use of a cookware with two receiving devices in two different orientations on the hob device;

Figure 11

a purely schematic representation of the arrangement of a cookware with two receiving devices on a hob device;

Figure 12

a purely schematic illustration of the assignment of a cookware to certain induction devices or induction coils according to a further embodiment;

Figure 13

a purely schematic representation of the conversion of ping signatures into identification numbers; and

Figure 14

Another purely schematic representation of the conversion of ping signatures into identification numbers.

In Figure 1 a cooking system 200 according to the invention is shown purely schematically in a perspective view. The cooking system 200 includes the one shown here Exemplary embodiment of a hob device 1 which is built into the worktop 301 of a kitchen unit 300.

The hob device 100 comprises an installation surface 2 on which cookware 100 can be placed. In the exemplary embodiment shown here, a plurality of induction devices 3 are arranged uniformly below the installation surface 2, by means of which the cookware 100 standing on the installation surface 2 can be heated. For the sake of clarity, only two induction devices 3 are shown in FIG Figure 1 indicated.

The cooking system 200 further comprises an evaluation device 50, which is integrated into the hob device 1 in the exemplary embodiment shown here.

In the exemplary embodiment shown here, the hob device 1 comprises several transmission devices 4 for sending at least one assignment signal 5, via which the position of the cookware 100 on the installation surface 2 can be automatically recognized in interaction with the cookware 100 and the evaluation device 50. It is thus possible to assign the induction devices 3 to a cookware 100 standing on the installation surface 2.

In the exemplary embodiment shown here, the transmission devices 4 are integrated into the induction devices 3 or are made available by the induction coils of the induction devices 3.

The cookware 100 here has a receiving device 101 which, in the exemplary embodiment shown, is also provided by a coil 102 on or in the bottom 104 of the cookware 100. Depending on the configuration, more than one receiving device 101 and / or several receivers can also be provided.

In the method according to the invention, the transmitting devices 4 transmit at least temporarily assignment signals 5 which are received or detected by the receiving device 101 or, depending on the configuration, with a plurality of receiving devices 101 of the cookware 100 when the cookware 100 is arranged on the installation surface 2 in such a way that it is heated by these induction devices 3.

The received assignment signals and / or a further processed signal is transmitted to the evaluation device 50 by means of a suitable communication device, not shown in detail. The communication device can be integrated into the cookware 100 or, depending on the configuration, can also be made available as a separate assembly. which can access the receiving device 101 of the cookware 100 via suitable functions.

The cookware 100 can also comprise a display device 103 which is activated by the assignment signals 5, by changes in the assignment signals or in some other way. It is thus also possible to transmit information to the cookware via the assignment signals and to display it on the display device 103.

In Figure 2 the mode of operation of the method according to the invention is shown purely schematically. Four induction devices 3 of a hob device 1 are shown, the induction coils of induction devices 3 functioning as transmission devices 4.

Below the induction devices 3 are in Figure 2 the half-waves are indicated which are emitted by the induction devices 3 or the induction coils of the induction devices 3 for heating a cookware 100. In addition to the induction devices, it is shown purely schematically that a range of these half-waves or a specific voltage value of the electromagnetic radiation is used as the assignment signal 5.

Two examples of assignment signals 5 for induction devices 3 are shown below the row of half-waves. It is shown in the first rows 1-4 that a time-shifted assignment signal 5 is transmitted by the four induction devices 3 or the 4 transmission devices 4, the pattern of the assignment signals being identical. So-called ping signals are provided here, a transmission pattern comprising three signals with a certain time interval.

Due to the time offset when the assignment signals 5 are sent out, a clear distinction can nevertheless be made between the individual induction devices 3. The time offset in the exemplary embodiment shown here is approximately 10 ms. However, the time offset can also be selected differently in suitable ranges.

In the lower four lines it is shown purely schematically that the assignment signals 5, which are also now provided as ping signals, do not have the identical structure.

A signal structure is formed here over the distance between the individual signals of the individual transmission devices, which is different and unique for each induction device. A specific induction device 3 or a specific transmission device 4 can thus be inferred from the structure of the assignment signals or the ping signals alone.

Due to the temporal offset of the transmission of the assignment signals 5, there is no common detection of different signals, so that the signal from different induction devices 3 or transmission devices 4 can always be clearly distinguished by the time component.

In the Figures 3 and 4 the assignment signals 5 received by a cookware are shown purely schematically, with a cookware 100 only covering the first induction coil 3 in the exemplary embodiment shown here. The signal received and evaluated in the evaluation device 50 corresponds to the signal structure and the time component of the first induction device 3. It is thus possible to unambiguously determine the position of the cookware 100 on the installation surface 2.

In Figure 4 it is shown that the cookware 100 stands on the first and the third induction device 3. The corresponding signal is shown to the right, whereby an assignment to certain induction devices 3 can be made clearly via the signal structure and the temporal reception of the corresponding assignment signals 5 by the receiving device 101, so that the evaluation device 50 determines the exact position of the cookware 100 on the installation surface 2 recognizes.

In the Figures 5 and 6th a possibility is shown purely schematically to distinguish the assignment signals 5 from more than four induction devices 3 or the induction devices of several generators.

The induction devices 3 are divided into two groups of four, the distinction between the first and the second group being made by a phase shift. In this case, a phase shift of 120 ° has been achieved between the induction devices 3 of a first generator A and those of a second generator B.

In Figure 5 two induction devices 3 are covered by a cookware. The assignment signals 5 received by means of the receiving device 101 of the cookware 100 and transmitted to the evaluation device 50 are shown next to the induction devices 3.

In Figure 6 is the same arrangement as in Figure 5 shown again, the set up cookware 100 now covering four induction devices 3. The data or signals received by the receiving device 101 of the cookware 100 and transferred to the evaluation device 50 are shown again.

In the Figures 7 to 9 is shown purely schematically that the amplitude or the intensity of the received assignment signal 5 can contribute to the optimization of the position detection.

In Figure 7 shown that a cookware 100 predominantly rests on the first induction device 3. The second induction device 3 also covers only a much smaller part of the cookware 100.

The percentage coverage of induction devices 3 by a cookware 100, the height or amplitude or intensity of the received assignment signals 5 can be clearly determined. The received assignment signal 5 of the first induction device 3 is significantly higher than that of the second induction device 3. Thus, the percentage coverage of the respective induction device can be inferred from the strength or amplitude or intensity of an assignment signal 5 received according to the coverage of an induction device 3.

In Figure 8 is the same arrangement as in Figure 7 shown again, the first two induction devices 3 being evenly covered by a cookware 100. The corresponding assignment signal 5 is shown next to it, the same amplitude or signal level of the assignment signals 5 here indicating approximately 50% coverage of the respective induction devices 3.

In Figure 9 As already shown in the two figures above, the percentage coverage can be inferred from the height or the amplitude or the intensity of an assignment signal 5. Here, the first four 4 induction devices 3 are covered differently by a cookware 100, the first and second induction devices 3 being covered equally and the third and fourth induction devices 3, the first and second induction devices being covered to a greater extent than the third and fourth induction devices the fourth. The corresponding received assignment signals 5 are shown on the right.

In Figure 10 is shown purely schematically that a cookware 100 can also have more than one receiving device 101. Then, in addition to the position on the installation surface 2 of a hob device 1, the orientation of the cookware 100 on the installation surface 2 can also be recognized.

The direction in which the cookware 100 is on the installation surface 2 is indicated purely schematically by the arrow. The cookware 100 is shown purely schematically once again in the middle in order to show the two receiving devices 101 again.

For example, depending on the configuration, different areas or sections of a cookware 100 can be assigned a different operating mode. For this purpose, depending on the orientation of the cookware 100 on the installation surface 2 or depending on which receiving device 101 is facing or facing away from the user, different cooking zones are made available.

For example, in the illustration on the left it is possible for a different searing zone to be made available at the front or facing the user, with a warming zone being made available in the rear area of the cookware 100.

If the cookware 100 is now set up with a different orientation, rotated by 180 ° in the exemplary embodiment shown here, uniform heating of the cookware 100 can be provided, for example.

In Figure 11 is indicated purely schematically that by moving the cookware 100 on the installation surface 2 of a hob device 1, for example, certain operating parameters can be set. This is possible both with only one receiving device 101 and with a plurality of receiving devices 101.

If, for example, only one receiving device 101 is provided in the cookware 100, translational movements can be detected and z. B. be converted into control signals. It is thus possible for this induction device 3 to be switched off, for example by pulling a cookware 100 away from an induction device 3.

In addition, depending on the configuration, it is possible to transfer the operating parameters set for an induction device 3 to this induction device 3 by pulling away the cookware 100 to another induction device 3.

In particular, if at least two receiving devices 101 are provided, rotary movement on the installation surface 2 can also be recognized, so that operating parameters can be changed, for example, by rotating the cookware 100. Thus, for example, when the cookware 100 is rotated clockwise, the power can be increased, with the power being reduced when it is rotated counterclockwise.

Other settings can also be suitably adjusted via the movement and / or the orientation of the cookware.

In Figure 12 is shown purely schematically that, particularly when using several generator devices 6, 7, 8, the assignment signals 5 are not only offset in time can be sent to each other, but can additionally or exclusively have a certain signal signature or ping signature.

In the exemplary embodiment shown here, a first generator 6 with four induction devices 3 or induction coils, a second generator 7 with four induction devices 3 and a third generator with four induction devices 3 are provided.

In order to enable an unambiguous assignment of a cookware 100 to one or more induction devices 3, both temporally offset assignment signals 5 and signal signatures are used in the exemplary embodiment shown here.

It can be seen here that a signal curve over time of 23 signal blocks 12 is used here, one signal block here corresponding to 10 milliseconds. In each signal block, an assignment signal 5 can either be transmitted or received or not.

In order to be able to distinguish the individual induction devices 3 of the individual generators, a defined signal structure is used in the exemplary embodiment shown. Each induction device sends out a predetermined sequence of electromagnetic excitations as a signature, the signal sequences from the induction devices 3 being transmitted to a generator device 6, 7, 8 with a time offset. The signal sequences are started one signal block later.

The predetermined sequence of electromagnetic excitations as a signature has three excitations in the exemplary embodiment shown here, a first distance 9 between the first excitation and the second excitation defining the generator device 6, 7, 8. This first distance 9 is greater here from the first generator device 6 to the third generator device 8. It is thus possible to infer the corresponding generator device 6, 7, 8 via the first distance 9 between the first excitation and the second excitation of a signal sequence.

A second distance 10 defines the corresponding induction device 3, which, for the sake of clarity, is labeled A1, A2, A3, A4, B1, C3 and C4 according to its association with a specific generator device 6, 7, 8.

The distance 10 from induction device A1 to A4, B1 to B4 and C1 to C4 becomes smaller and smaller.

This systematics in the signal sequence allows a clear assignment of a cookware 100 to certain induction devices.

In the Figures 13 and 14th the further processing of the determined signal sequences or signatures is shown. In this case, the determined signals in the exemplary embodiment shown are entered into the 23 signal blocks 12 provided here, regardless of their association with a specific signal sequence of a specific induction device 3.

The corresponding systematics of the signal sequences through the offset of the signals and the distances 9, 10 between the signals also result in clear patterns here which correspond to the coverage of certain induction devices. In the Figures 13 and 14th only multiple covers considered.

The signal pattern registered in this way is converted into an eight-digit number or identification number 11 by binary addition. Other methods can also be used to convert the pattern to a unique number. This identification number 11 corresponds to a specific coverage of induction devices 3 by a cookware 100.

This identification number 11 could be transmitted to the hob without an excessive volume of data. In the exemplary embodiment shown here, however, a table is stored in a chip in the cookware 100, in which a consecutive number is assigned to each identification number 11, which is in the Figures 13 and 14th is entered in the line next to the identification number 11. In this way, the data volume can be reduced once again during the transmission from the cookware 100 to the hob 1.

List of reference symbols

1

Hob equipment

2

Installation area

3

Induction device

4th

Sending facility

5

Assignment signal

6th

first generator device

7th

second generator device

8th

third generator device

9

first distance

10

second distance

11

Identification Number

12

Signal block

50

Evaluation device

100

Cookware

101

Receiving device

102

Kitchen sink

103

Display device

104

ground

200

Cooking system

300

Kitchenette

301

Work surface

Claims (25)

A method for operating a cooking system (200) comprising at least one hob device (1), at least one cookware (100) and at least one evaluation device (50), the hob device (1) having at least one set-up surface (2) for setting up cookware (100) and comprises at least one generator device (6, 7, 8) with at least two induction devices (3) for heating the cookware (100) placed on the installation surface (2) and wherein the cookware (100) is suitable and designed for this purpose by means of at least one induction device ( 3) to be heated,
wherein the induction devices (3) of the hob device (1) are each assigned at least one transmitter device (4) and the cookware (100) comprises at least one receiver device (101), the transmitter devices (4) at least at times each having at least one assignment signal (5) send out which is received by the receiving device (101) of the cookware (100) when the cookware (100) is heated by the corresponding induction device (3),
characterized,
that the assignment signals (5) of the individual transmission devices (4) are transmitted with a predetermined time offset and / or that the assignment signals (5) of the individual induction devices (3) include different predetermined sequences of electromagnetic excitations as a signature, so that the evaluation device (50) can assign the assignment signals (5) detected by the receiving device (101) to the individual induction devices (3) and thus assign the cookware (100) to at least one induction device (3). Method according to Claim 1, characterized in that the assignment signals (5) of the individual induction devices (3) comprise the same predetermined sequences of electromagnetic excitations, which are differentiated via the time offset. Method according to one of the preceding claims, characterized in that at least two generator devices are provided and that the assignment signals (5) of the individual induction devices (3) each include a predetermined sequence of at least three electromagnetic excitations as a signature, a first distance (9) of the first electromagnetic excitation encodes the generator device (6, 7, 8) for the second electromagnetic excitation and a second distance (10) between the second electromagnetic excitation and the third electromagnetic excitation Coded induction device (3) of the corresponding generator device (6, 7, 8) or vice versa. Method according to the preceding claim, characterized in that the first distance (9) from the generator device (6, 7, 8) to the generator device (6, 7, 8) increases and that the second distance (10) from the induction device (3) increases Induction device (3) of a respective generator device (6, 7, 8) becomes smaller. Method according to one of the preceding claims, characterized in that the received electromagnetic excitations are translated into a unique identification number (11) which corresponds to the coverage of certain induction devices (3). Method according to the preceding claim, characterized in that the received predetermined sequences of electromagnetic excitations of the corresponding induction devices (3) are entered in a common time profile and that the identification number is determined on the basis of the signal pattern. Method according to one of the preceding claims, characterized in that the intensity of at least one assignment signal (5) is taken into account. Method according to one of the preceding claims, characterized in that the intensity of the assignment signals (5) is taken into account in order to conclude that individual induction devices (3) are covered by a cookware (100). Method according to one of the preceding claims, characterized in that at least one transmission device (4) is made available by at least one induction device (3). Method according to one of the preceding claims, characterized in that at least one receiving device (101) comprises at least one coil (102). Method according to one of the preceding claims, characterized in that at least two receiving devices (101) are provided in the cookware (101). Method according to the preceding claim, characterized in that at least one orientation of the cookware (100) on the installation surface (2) is recognized. Method according to the preceding claim, characterized in that when two or more induction devices (3) are covered by the cookware (100) at least one operating parameter of at least one induction device depends on the orientation of the cookware (100). Method according to one of the preceding claims, characterized in that at least one movement of the cookware (100) on the installation surface (3) is detected. Method according to the preceding claim, characterized in that the movement comprises at least one translational and / or rotational component. Method according to one of the two preceding claims, characterized in that at least one operating parameter of the hob device (1) is set on the basis of the movement. Method according to one of the three preceding claims, characterized in that at least one operating parameter of an induction device (3) set for a cookware (100) is transferred to the induction device (3) then relevant when the cookware (100) is moved. Method according to one of the preceding claims, characterized in that the transmission device (4) sends the assignment signals (5) during operation of at least one induction device (3). Method according to one of the preceding claims, characterized in that the transmitting device (4) sends the assignment signals (5) when the induction devices (3) are not in operation. Method according to one of the preceding claims, characterized in that a display device (103) on the cookware (100) is activated via the assignment signals (5) and / or a change in the assignment signals (5). Cooking system (200) comprising at least one hob device (1), at least one cookware (100) and at least one evaluation device (50), wherein the hob device (1) has at least one set-up surface (2) for setting up cookware (100) and at least two induction devices ( 3) for heating the cookware (100) placed on the installation surface (2) and wherein the cookware (100) is suitable and designed to be heated by means of at least one induction device (3), the induction devices (3) of the hob device ( 1) at least one transmission device (4) is assigned to each and wherein the cookware (100) comprises at least one receiving device (101), wherein the transmitting devices (4) are suitable and designed to transmit at least one assignment signal (5) at least from time to time and wherein the receiving device (101) is suitable and designed to receive an assignment signal (5) if the cookware (100) is heated by the corresponding induction device (3),
characterized,
that the evaluation device (50) is suitable and designed to use the assignment signals (5) sent by the transmitting devices (4) with a time offset and detected by the receiving device (101) and / or by the detected signatures from the predetermined sequences of electromagnetic Suggestions of the individual assignment signals (5) of the individual induction devices (3) to assign the cookware (100) to at least one induction device (3). Cooking system according to the preceding claim, characterized in that at least one transmission device (4) is made available by at least one induction device (3). Cooking system according to one of Claims 18 to 19, characterized in that at least one receiving device (101) comprises at least one coil (102). Cooking system according to one of Claims 18 to 20, characterized in that at least two receiving devices (101) are provided in the cooking utensil (100). Cooking system according to one of Claims 18 to 21, characterized in that the cooking utensil (100) comprises at least one display device (103).

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