EP3738407B1 - Hob device - Google Patents

Description

The invention relates to a hob device according to the preamble of claim 1 and a method for operating a hob device according to the preamble of claim 15.

From the international patent application WO 2017/093850 A1 a hob device is already known which has an installation plate designed as a hob plate and eight heating units which are arranged in an installed position below the hob plate. The hob device has several lighting strips. Two lighting strips are assigned to a single heating unit. In this case, the lighting strips assigned to the heating unit are arranged on opposite sides of the heating unit with respect to a transverse direction. In an operating state, the lighting strips indicate a change in a heating output of heating units that are adjacent in the depth direction by means of an intensity that changes in a depth direction of lighting strips that are adjacent in the depth direction.

DE 10 2014 223711 A1 discloses a cooktop device according to the preamble of claim 1.

A hob device is also known, which has an installation plate designed as a hob plate and three heating units. The hob device also has three lighting units, each of which has three lighting units that are designed as individual light sources and are therefore different from a light strip. Neighboring lighting units have a distance of at least 40 mm. The object of the invention is in particular to provide a generic device with improved properties with regard to lighting. The object is achieved according to the invention by the features of claims 1 and 15, while advantageous configurations and developments of the invention can be found in the dependent claims.

The invention is based on a hob device, in particular an induction hob device, with at least one support plate, which is provided for setting up at least one cooking utensil, with at least two heating units for heating the cooking utensil and with at least one, in particular dynamic, lighting strip, which in particular has a main function in Has at least one piece of information in the form of lighting and/or in the form of an output.

It is proposed that the lighting strip has at least one lighting unit and, in at least one operating state, indicates at least one extension of the cooking utensil in at least one direction, namely a maximum distance between two points of a vertical projection of the cooking utensil (14a-e) on a plane.

In particular, particularly advantageous lighting properties can be achieved by the configuration according to the invention. In particular, an operator can quickly recognize an extension of the cooking utensil at a glance, as a result of which the operator can quickly and/or easily estimate an area that is still available for further cooking utensil. In particular, optimized operability can be provided. In particular, an output area, which is normally limited to an operator interface, can be expanded, as a result of which information output by means of the lighting strip can be easily recognized by an operator, which can be achieved in particular from the size of the output area and/or from the proximity of the output area to the cooking utensil can.

A “cooktop device”, in particular an “induction cooktop device”, should be understood to mean in particular at least a part, in particular a subassembly, of a cooktop, in particular an induction cooktop.

A “mounting plate” is to be understood in particular as at least one, in particular plate-like, unit which is provided for setting up at least one cooking utensil and/or for laying on at least one item to be cooked for the purpose of heating. The mounting plate could be designed, for example, as a partial area of at least one worktop, in particular at least one kitchen worktop, in particular a cooking system. Alternatively or additionally, the mounting plate could be designed as a hob plate. The mounting plate designed as a hob plate could in particular form at least part of an outer hob housing and in particular together with at least one outer housing unit, with which the mounting plate designed as a hob plate could be connected in at least one assembled state, at least to a large extent form the outer hob housing. The installation plate could, for example, be made at least to a large extent of glass and/or glass ceramic and/or neolith and/or dekton and/or wood and/or marble and/or stone, in particular natural stone, and/or laminate and/or made of metal and/or plastic and/or ceramic. “At least for the most part” is to be understood as meaning in particular a proportion, in particular a mass proportion and/or volume proportion, of at least 70%, in particular at least 80%, advantageously at least 90% and preferably at least 95%.

In this context, a “heating unit” is to be understood in particular as a unit which is provided in at least one operating state to supply energy to at least one cooking utensil for the purpose of heating the cooking utensil. For example, the heating unit could be designed as a resistance heating unit and in particular be provided to convert energy into heat and to supply it to the cooking utensil for the purpose of heating the cooking utensil. Alternatively or additionally, the heating unit could be designed as an induction heating unit and be provided in particular to supply energy in the form of an alternating electromagnetic field to the cooking utensil, with the energy supplied to the cooking utensil being able to be converted into heat in particular in the cooking utensil. In at least one operating state, the heating unit feeds energy in particular to the cooking utensil, specifically in particular for heating and/or warming the cooking utensil. In particular, the hob device has at least three, in particular at least four, advantageously at least six, particularly advantageously eight and preferably a large number of heating units. In particular, the heating units, in particular of the hob device, define at least one variable cooking surface area and are arranged in particular in a matrix-like manner.

A "lighting strip" is to be understood in particular as a unit which has an elongate shape and which in at least one operating state provides in particular at least essentially continuous lighting. The lighting strip differs in particular from at least one display. In particular, the lighting strip indicates the extension of the at least two heating units in real space, which differs in particular from a virtual representation of an extension, such as in a display. In at least one operating state, the lighting strip is arranged in particular at a distance from at least one operator interface, which in particular could have at least one display for outputting at least one operating parameter. In particular, the hob device has at least one user interface, which is provided in particular for inputting and/or outputting at least one operating parameter. The light strip has in particular a main function in the form of lighting and/or an output of at least one piece of information and is designed in particular differently from a control strip of the user interface, the main function of which is in particular an operation and/or an input of at least one piece of information and/or at least one operating instruction . In particular, the lighting strip is free of sensor elements which are provided in particular for detecting at least one operator input. The separate design of the lighting strip and the user interface can advantageously allow a high degree of flexibility and/or a high degree of design freedom with regard to an arrangement of the lighting strip. In particular, the lighting strip can be arranged in the vicinity of the heating units and/or in an area of increased temperature, in particular while avoiding any risk an incorrect input by means of the user interface and/or while avoiding the risk of incorrect detection of an operating instruction.

An "elongated" shape of an object is to be understood in particular as a shape in which a longitudinal extension of the object is at least three times, in particular at least five times, advantageously at least seven times, particularly advantageously at least ten times and preferably at least fifteen times as large as extensions aligned perpendicular to the longitudinal extension of the object. A “longitudinal extent” of an object is to be understood in particular as an extent of the object along a direction of longitudinal extent of the object. A "longitudinal direction" of an object is to be understood in particular as a direction which is aligned parallel to a longest side of the smallest imaginary geometric cuboid which just about completely encloses the object. An "extension" of an object should be understood to mean a maximum distance between two points of a perpendicular projection of the object onto a plane.

"At least essentially continuous" lighting should be understood to mean, in particular, continuous lighting and/or lighting provided by a large number of lighting units, in which lighting units that are adjacent to one another, in particular directly, are at a distance of no more than 35 mm, in particular no more than 30 mm, advantageously not more than 25 mm, particularly advantageously not more than 20 mm, preferably not more than 15 mm and particularly preferably not more than 10 mm. For example, the lighting strip could have one light source, in particular a single light source, which in at least one operating state provides in particular at least essentially continuous lighting and in particular could be designed as a fluorescent tube, advantageously as a fluorescent tube. Alternatively or additionally, the lighting strip could have at least two, in particular at least three, advantageously at least four and preferably a large number of lighting units, which could each be designed as a fluorescent tube and which are at a maximum distance of 35 mm, in particular a maximum of 30 mm, advantageously a maximum of 25 mm, particularly advantageously of a maximum of 20 mm, preferably of a maximum of 15 mm and particularly preferably of a maximum of 10 mm. Alternatively or additionally, the lighting strip could have a large number of lighting units which, in at least one operating state, could in particular provide at least essentially continuous lighting and in which lighting units that are particularly adjacent to one another, in particular directly, are at a maximum distance of 35 mm, in particular of a maximum of 30 mm. advantageous of could have a maximum of 25 mm, particularly advantageously a maximum of 20 mm, preferably a maximum of 15 mm and particularly preferably a maximum of 10 mm.

A “lighting unit” is to be understood in particular as meaning a unit which, in at least one operating state, emits and/or provides electromagnetic radiation, in particular in the form of visible light. In particular, the lighting unit has at least one light source. For example, the lighting unit could in particular have exactly one light source, such as at least one fluorescent tube, in particular at least one fluorescent tube. Alternatively or additionally, the lighting unit could have in particular at least two, advantageously at least three, particularly advantageously at least four and preferably a multiplicity of light sources. For example, the light sources could each be in the form of an LED and in particular form a common assembly unit and/or be arranged within a common lighting unit housing unit.

A "plurality" is to be understood in particular as a number of at least five, in particular at least six, advantageously at least eight, particularly advantageously at least ten, preferably at least twelve and particularly preferably at least fifteen. In particular, the lighting strip has a multiplicity of lighting units, which are arranged distributed, in particular at least substantially uniformly, in particular in a direction of longitudinal extent of the lighting strip. In an installed position, the lighting strip rests in particular on a rear side of the mounting plate, which is designed in particular as a side of the mounting plate that faces away from an operator in an installed position. The mounting plate has in particular at least one partial surface area, for the illumination of which the lighting strip is provided in particular. In particular, the lighting strip illuminates the partial surface area in at least one operating state and is in particular in contact with a partial area of a rear side of the mounting plate located opposite the partial surface area on the rear side of the mounting plate.

A “dynamic” light strip is to be understood in particular as a light strip which, in at least one operating state, is intended to deliberately change at least one marking property, in particular as a function of activation of the light strip by at least one control unit. The deliberate change in a marking property differs in particular from a change in the marking property which occurs as a result of the effect of temperature and/or wear and tear and/or wear. In particular, a "marking property" is intended to mean a property of an actual marking be understood. In at least one operating mode, the marking property is in particular permanently visible to an operator. In particular, the marking property could be a lighting property. In particular, the marking could be lighting. For example, the hob device could have at least one static lighting strip, in particular in addition to the dynamic lighting strip, which could be provided for marking the at least two heating units. The static lighting strip could be, for example, a marking of the at least two heating units introduced into a surface of the mounting plate.

In particular, the hob device has at least one control unit, which is provided in particular at least for controlling and/or operating the lighting strip. A "control unit" is to be understood in particular as an electronic unit which is preferably at least partially integrated in a control and/or regulating unit of a hob, in particular an induction hob, and which is preferably provided for at least the lighting strips and/or the heating units to control and/or regulate. Preferably, the control unit comprises an arithmetic unit and, in particular, in addition to the arithmetic unit, a memory unit with a control and/or regulation program stored therein, which is intended to be executed by the arithmetic unit. In particular, the control unit is provided to form at least one heating zone for heating the positioned cooking utensil from the heating units when the cooking utensil has been set up. The control unit is provided in particular for controlling the lighting strip.

In particular, the lighting strip has at least one lighting control unit, which is provided in particular for activation by the control unit and/or for communication with the control unit. In at least one operating state, the lighting control unit controls, in particular, the lighting unit and controls and/or regulates, in particular, light emitted by the lighting unit. In particular, the lighting control unit and the control unit are arranged and/or designed separately from one another, in particular spatially, and in particular as independent units. In at least one operating state, the lighting control unit and the control unit communicate in particular with one another. In particular, an operator can activate and/or deactivate the lighting strip, in particular by means of at least one operator input using at least one operator interface. For example, the lighting control unit could communicate with at least one user interface, in particular the hob device, in at least one operating state.

For example, the direction could be aligned at least essentially parallel to the transverse direction and/or at least essentially perpendicular to the depth direction. Advantageously, the direction is aligned at least essentially parallel to the depth direction and/or at least essentially perpendicular to the transverse direction.

For example, the at least two heating units could be arranged adjacent to one another in at least one transverse direction. A "transverse direction" is to be understood in particular as a direction which is aligned at least essentially parallel to a front edge of the mounting plate. In particular, the at least two heating units are arranged adjacent to one another in at least one depth direction. A "depth direction" is to be understood in particular as a direction which is aligned at least essentially perpendicularly to a front edge of the mounting plate and which points in particular from an area facing towards an operator to an area facing away from an operator. The transverse direction and the depth direction are in particular aligned at least essentially perpendicular to one another and in particular at least essentially parallel to a main plane of extent of the mounting plate.

A "main extension plane" of an object is to be understood in particular as a plane which is parallel to a largest side face of the smallest imaginary geometric cuboid which just completely encloses the object and in particular runs through the center point of the cuboid. "Substantially parallel" is to be understood here in particular as an alignment of a direction relative to a reference direction, in particular in a plane, with the direction relative to the reference direction deviating in particular by less than 8°, advantageously less than 5° and particularly advantageously less than 2°. The term “essentially perpendicular” is intended here to define in particular an alignment of a direction relative to a reference direction, with the direction and the reference direction, viewed in particular in one plane, enclosing an angle of 90° and the angle has a maximum deviation of, in particular, less than 8 °, advantageously less than 5° and particularly advantageously less than 2°.

“Provided” is to be understood in particular as being specially designed and/or equipped. The fact that an object is provided for a specific function is to be understood in particular to mean that the object fulfills and/or executes this specific function in at least one application and/or operating state.

In a further aspect of the invention, which can be considered on its own or together with other aspects of the invention, it is proposed that the lighting strip has a longitudinal extension of at least 200 mm, in particular at least 250 mm, advantageously at least 300 mm of at least 350 mm, preferably at least 400 mm and particularly preferably at least 450 mm. As a result, in particular a large area, such as in particular a variable cooking surface area, can be illuminated by means of the lighting strip, as a result of which further lighting strips in particular can be dispensed with and/or less stock can be achieved.

In a further aspect of the invention, which can be considered on its own or together with other aspects of the invention, it is proposed that the lighting strip has at least one lighting unit and in at least one operating state with respect to at least one direction at least one operating parameter that changes direction indicates. For example, the direction could be aligned at least essentially parallel to the transverse direction and/or at least essentially perpendicular to the depth direction. Advantageously, the direction is aligned at least essentially parallel to the depth direction and/or at least essentially perpendicular to the transverse direction. The operating parameter could be, for example, at least one temperature to which a cooking utensil in particular is to be heated and/or at least one heating output by means of which a cooking utensil is heated in particular and/or which in particular provides a corresponding heating unit of the at least two heating units in at least one operating state. The lighting strip could indicate the operating parameter changing in direction, in particular by means of at least one change in intensity and/or color and/or brightness and/or saturation. In this way, in particular, a high level of operating comfort can be achieved, since an operator can identify the operating parameter in particular quickly and easily.

In addition, it is proposed that the lighting strip extends at least essentially over the entire depth of the mounting plate. The phrase that the lighting strip "at least essentially" extends over the entire depth of the mounting plate should be understood in particular to mean that the lighting strip covers a proportion of at least 60%, in particular at least 70%, advantageously at least 80%, particularly advantageously extends from at least 90% and preferably from at least 95% of a depth extension of the mounting plate. A "depth extension" of an object is to be understood in particular as an extension of the object in the depth direction. As a result, at least essentially the entire depth of the mounting plate can be illuminated, in particular by means of a single lighting strip, as a result of which further lighting strips can be dispensed with in particular and/or a small amount of stock can be achieved.

In the operating state, the lighting strip could only indicate the extent of the cooking utensil, for example. In the operating state, the lighting strip preferably indicates at least one position of the cooking utensil in terms of direction, in particular relative to at least one reference point, such as at least one user interface and/or advantageously at least one front edge of the mounting plate. A "front edge" of a mounting plate is to be understood in particular as an edge of the mounting plate that faces an operator in the operating state. As a result, in particular in addition to the extent of the cooking utensil, in particular at least one piece of additional information can be output to an operator, as a result of which a high level of operating convenience can be achieved in particular.

It is also proposed that the lighting unit is designed as a colored lighting unit and emits light with at least two, in particular with at least three, advantageously with at least four, particularly advantageously with at least eight, preferably with at least twelve and particularly preferably with a large number colors is provided. In particular, the lighting unit could have at least two, advantageously at least three, particularly advantageously at least four and preferably a large number of light sources, which in particular could each be intended to emit light in a specific color, which is why the lighting unit, in particular due to a sum of different light sources , could be provided in particular for the emission of light in different colors. Alternatively or additionally, the lighting unit could have at least one light source, which could be provided in particular for emitting light in different colors. The lighting unit is intended in particular to emit light in at least 50, in particular with at least 100, advantageously with at least 150, particularly advantageously with at least 200, preferably with at least 225 and particularly preferably with at least 250 colors. In this way, in particular, a high degree of flexibility and/or a high degree of design freedom can be made possible. In particular, information, in particular about at least one operating parameter and/or at least one property of the cooking utensil and/or at least one direction of movement of the cooking utensil, can be displayed to an operator in a simple and/or intuitive manner. An “operating parameter” is to be understood in particular as a parameter that characterizes an operation, such as at least one heating state and/or a course of at least one heating state and/or at least one heating state predefined for a given heating zone and/or a position of at least one cooking utensil. A “heating state” is intended in particular to include a particularly current and/or current heating output and/or a particularly current and/or current temperature and/or a particularly current and/or current residual heat. A “property of the cooking utensil” is to be understood in particular as an extension of the cooking utensil and/or a material of the cooking utensil and/or a surface extension of the cooking utensil, in particular when viewed perpendicularly onto a main extension plane of the support plate.

For example, the lighting unit could in particular have exactly one light source, such as at least one fluorescent tube, in particular at least one fluorescent tube. The lighting strip preferably has at least one further lighting unit and in particular at least two, advantageously at least three, particularly advantageously at least four and preferably a large number of lighting units which can be controlled, in particular activated and/or deactivated, independently of the lighting unit. In particular, the lighting unit can be controlled independently of the additional lighting unit and thus in particular while avoiding influencing an activity state of the additional lighting unit. In particular, at least one lighting property of the lighting unit and the additional lighting unit can be set independently of one another. A "luminous property" of a luminous unit is to be understood in particular as an intensity and/or a brightness and/or a color of the luminous unit and/or a light emitted by the luminous unit. In this way, a particularly high degree of flexibility and/or a particularly high degree of design freedom can be made possible.

Furthermore, it is proposed that the lighting strip indicates at least one heating state of the cooking utensil in the operating state, as a result of which a particularly high level of operating convenience can be achieved in particular. In particular, an operator can be warned of at least one warm and/or hot area, as a result of which a high level of safety and/or a low risk of injury to an operator can be made possible.

It is also proposed that the lighting strip indicates at least one direction of movement in the operating state, in which the cooking utensil can be moved. In particular, the direction of movement, starting from a first set-up position of the cooking utensil, in which the cooking utensil is in particular currently set up, points in the direction of at least one further area, in particular at least one cooking surface area at least partially defined by the at least two heating units. A "setup position" of the cooking utensil is to be understood in particular as a position of the cooking utensil above the mounting plate, at which the cooking utensil is positioned and/or arranged and/or set up for the purpose of heating the cooking utensil. As a result, at least one possibility, for example to optimize a set-up position of the Cooking utensil and/or a change in heating power, by means of which the cooking utensil can be heated in particular, are displayed.

For example, the lighting strip could indicate the direction of movement, in which the cooking utensil can be moved in particular, in the operating state by means of at least one color gradient and/or by means of at least one brightness gradient. In the operating state, the lighting strip preferably indicates the direction of movement by means of at least one intensity curve, specifically in particular by means of an intensity gradient. In particular, the lighting strip could indicate the direction of movement, in which the cooking utensil can be moved in particular, in the operating state by means of at least one temporal intensity profile and/or color profile and/or brightness profile. Alternatively or additionally, the lighting strip could indicate the direction of movement, in which the cooking utensil can be moved in particular, in the operating state, in particular by means of at least one spatial intensity profile and/or color profile and/or brightness profile. As a result, the direction of movement can be displayed for an operator in a particularly quick and/or particularly easily recognizable manner, as a result of which uncomplicated and/or comfortable operability can be provided in particular.

Furthermore, it is proposed that the lighting strip in the operating state indicates at least one movement of the cooking utensil from a first set-up position to a second set-up position. In this way, particularly high transparency and/or convenient operability can be achieved. In particular, an opportunity can be created for an operator to change at least one operating parameter in the course of the movement of the cooking utensil and/or to transfer at least one operating parameter from the first set-up position to the second set-up position.

It is also proposed that the lighting strip in the operating state indicates the movement of the cooking utensil by deactivating the lighting of the first set-up position and activating a light of the second set-up position. For example, the lighting strip in the operating state could change at least one lighting property, in particular at least two, advantageously at least four, particularly advantageously a large number of and preferably all lighting properties of the lighting of the first set-up position when activating the lighting of the second set-up position. In the operating state, the lighting strip advantageously transmits at least one lighting property, in particular at least two, advantageously at least four, particularly advantageously a large number of and preferably all lighting properties from the lighting of the first set-up position to the lighting of the second set-up position. As a result, the movement of the cooking utensil can be particularly intuitive and/or are displayed in an easily understandable manner, as a result of which, in particular, ease of use can be achieved.

For example, in the operating state the lighting strip could only deactivate the lighting of the first set-up position and activate the lighting of the second set-up position. In the operating state before the activation of the lighting of the second set-up position, the lighting strip preferably displays at least one operator prompt by at least one change in at least one lighting property. A "lighting property" is to be understood in particular as a property and/or a characteristic of a lighting provided by the lighting strip, such as a brightness and/or a color and/or an intensity and/or an activation type of the lighting provided by the lighting strip. The activation type of lighting could be, for example, constant lighting and/or frequented lighting and/or blinking lighting and/or lighting in the form of a pattern. The operator prompt is in particular a confirmation of the movement of the cooking utensil from the first set-up position to the second set-up position, which the operator can comply with in particular by at least one operator input. An "operator input" is to be understood in particular as an optical and/or acoustic and/or haptic input by means of at least one user interface, in particular by an operator. In this way, in particular, a high level of security can be achieved and/or accidental activation of the lighting and/or at least one heating unit in the second set-up position can be avoided. In particular, a low susceptibility to errors can be made possible.

The lighting strip can be used to display various visual information relating to an operating state and/or a heating state and/or operability to an operator, specifically in particular depending on a current state and/or an action currently taking place. In particular, advantageous operability can be achieved by the lighting strip, in particular by displaying at least one piece of information relating to an operating state and/or to a heating state and/or to operability. In particular, due to the independence of the lighting units and/or due to the different colors that the lighting unit can emit in particular, at least one piece of information can be output flexibly to an operator. The information can be, in particular in addition to the extent of the cooking utensil, for example a size of the cooking utensil and/or a set-up position of the cooking utensil and/or a position of the cooking utensil and/or a heating state and/or residual heat and/or or be a heating power and/or a possible direction of movement and/or heating zones with different predefined heating powers and/or a heating power profile.

A particularly optimized lighting can be achieved in particular by a hob, in particular by an induction hob, with at least one hob device. Advantageous lighting can be achieved in particular by a cooking system with the cooktop and the cooking utensil. A “cooking system” is to be understood in particular as a system that has at least one cooking appliance that is intended for cooking food, such as an oven and/or a hob and/or a microwave, and which in particular also has at least one further structural unit could have, which is designed differently from a cooking appliance, such as in particular a cleaning appliance and/or a refrigerating appliance and/or a mobile appliance and/or at least one contact module. In particular, the cooking system is intended to have at least one structural unit which is intended to be arranged in a kitchen. The cooking system could, for example, have at least one accessory unit for the cooking appliance, such as a sensor unit for externally measuring a temperature of a cooking utensil and/or a cooking item.

Lighting can be further optimized in particular by a method for operating a cooktop device, with at least one support plate, which is provided for setting up at least one cooking utensil, with at least two heating units for heating the cooking utensil and with at least one, in particular dynamic, lighting strip, wherein in at least one extension of the cooking utensil is displayed by means of the lighting strip in at least one operating state with respect to at least one direction.

The hob device should not be limited to the application and embodiment described above. In particular, the hob device can have a number of individual elements, components and units that differs from the number specified here in order to fulfill a function described herein.

Further advantages result from the following description of the drawing. Exemplary embodiments of the invention are shown in the drawing. The drawing, the description and the claims contain numerous features in combination.

Fig. 1

ein Garsystem mit einem Kochfeld, das eine Kochfeldvorrichtung aufweist, und mit zwei Gargeschirren in einem Betriebszustand in einer schematischen Draufsicht,

Fig. 2

eine Kochfeldgehäuseeinheit, eine Aufstellplatte und zwei Beleuchtungsstreifen der Kochfeldvorrichtung in einer schematischen Explosionsdarstellung,

Fig. 3

einen der Beleuchtungsstreifen in einer perspektivischen Darstellung,

Fig. 4

den Beleuchtungsstreifen aus Figur 3 in einer perspektivischen Explosionsdarstellung,

Fig. 5

ein Gehäuseteilelement einer Gehäuseeinheit, eine Leiterplatte und eine Diffusionseinheit des Beleuchtungsstreifens aus Figur 3 in einer perspektivischen Darstellung,

Fig. 6

einen vergrößerten Ausschnitt aus Figur 5,

Fig. 7

einen Ausschnitt der Kochfeldgehäuseeinheit und des Beleuchtungsstreifens aus Figur 3 in einer perspektivischen Darstellung,

Fig. 8

einen Ausschnitt des Beleuchtungsstreifens aus Figur 3 in einer perspektivischen Darstellung,

Fig. 9

den Beleuchtungsstreifen aus Figur 3 in einer teilweise Schnittdarstellung,

Fig. 10

die Beleuchtungsstreifen aus Figur 2 und eine Steuereinheit der Kochfeldvorrichtung in einer schematischen Darstellung,

Fig. 11

das Garsystem mit dem Kochfeld und mit einem Gargeschirr in einem Betriebszustand in einer schematischen Draufsicht,

Fig. 12

das Garsystem mit dem Kochfeld und mit einem Gargeschirr in einem Betriebszustand in einer schematischen Draufsicht,

Fig. 13

das Garsystem mit dem Kochfeld und mit einem Gargeschirr in einem Betriebszustand in einer schematischen Draufsicht,

Fig. 14

das Garsystem mit dem Kochfeld und mit einem Gargeschirr in einem Betriebszustand in einer schematischen Draufsicht,

Fig. 15

das Garsystem mit dem Kochfeld und mit einem Gargeschirr in einem Betriebszustand in einer schematischen Draufsicht,

Fig. 16

das Garsystem mit dem Kochfeld und mit einem Gargeschirr in einem Betriebszustand in einer schematischen Draufsicht,

Fig. 17

das Garsystem mit dem Kochfeld und mit einem Gargeschirr in einem Betriebszustand in einer schematischen Draufsicht,

Fig. 18

einen Beleuchtungsstreifen einer alternativen Kochfeldvorrichtung in einer perspektivischen Darstellung,

Fig. 19

einen Beleuchtungsstreifen einer alternativen Kochfeldvorrichtung in einer perspektivischen Darstellung,

Fig. 20

einen Beleuchtungsstreifen einer alternativen Kochfeldvorrichtung in einer perspektivischen Darstellung und

Fig. 21

einen Beleuchtungsstreifen einer alternativen Kochfeldvorrichtung in einer perspektivischen Darstellung.

Show it:

1

a cooking system with a hob, which has a hob device, and with two cooking utensils in an operating state in a schematic top view,

2

a hob housing unit, a mounting plate and two lighting strips of the hob device in a schematic exploded view,

3

one of the lighting strips in a perspective view,

4

off the lighting strip figure 3 in a perspective exploded view,

figure 5

a housing part of a housing unit, a circuit board and a diffusing unit of the lighting strip figure 3 in a perspective view,

6

an enlarged section figure 5 ,

7

a section of the hob housing unit and the lighting strip figure 3 in a perspective view,

8

a section of the lighting strip figure 3 in a perspective view,

9

off the lighting strip figure 3 in a partial sectional view,

10

the light strips off figure 2 and a control unit of the hob device in a schematic representation,

11

the cooking system with the hob and with a cooking utensil in an operating state in a schematic top view,

12

the cooking system with the hob and with a cooking utensil in an operating state in a schematic top view,

13

the cooking system with the hob and with a cooking utensil in an operating state in a schematic top view,

14

the cooking system with the hob and with a cooking utensil in an operating state in a schematic top view,

15

the cooking system with the hob and with a cooking utensil in an operating state in a schematic top view,

16

the cooking system with the hob and with a cooking utensil in an operating state in a schematic top view,

17

the cooking system with the hob and with a cooking utensil in an operating state in a schematic top view,

18

a lighting strip of an alternative hob device in a perspective view,

19

a lighting strip of an alternative hob device in a perspective view,

20

a lighting strip of an alternative hob device in a perspective view and

21

a lighting strip of an alternative hob device in a perspective view.

1 shows a cooking system 82a with a hob 48a and with two cooking utensils 14a. The hob 48a is designed as an induction hob. The hob 48a has a hob device 10a, which is designed as an induction hob device.

The hob device 10a has a mounting plate 12a. In the present exemplary embodiment, the mounting plate 12a is designed as a hob plate. In an assembled state, the mounting plate 12a forms part of an outer hob housing, specifically an outer hob housing in particular of the hob 48a. The mounting plate 12a is provided for mounting cookware 14a (cf. 1 and 11 to 17).

The hob device 10a has a multiplicity of heating units 16a for heating cookware 14a. Of the objects that are present several times, only one is provided with a reference number in each of the figures. In the present exemplary embodiment, the hob device 10a has thirty-six heating units 16a. The heating units 16a are arranged in an installed position below the mounting plate 12a. The heating units 16a are intended to heat cookware 14a placed on the support plate 12a above the heating units 16a. In the present exemplary embodiment, the heating units 16a are in the form of induction heating units.

The hob device 10a has an operator interface 50a for inputting and/or selecting operating parameters, for example a heating output and/or a heating output density and/or a heating zone. The operator interface 50a is provided for outputting a value of an operating parameter to an operator.

The hob device 10a has a control unit 52a. The control unit 52a is provided for carrying out actions and/or changing settings depending on operating parameters entered by means of the user interface 50a. In a heating operating state, the control unit 52a regulates an energy supply to the heating units 16a.

The hob device 10a has an outer hob housing unit 40a (cf. 2 and 7 ). In an operating state, the hob outer housing unit 40a forms part of the hob outer housing. In an operating state, the external hob housing unit 40a forms the external hob housing together with the mounting plate 12a. The hob outer housing unit 40a partially defines a storage space 42a. In an operating state, the hob outer housing unit 40a defines the storage space 42a together with the mounting plate 12a.

In the present exemplary embodiment, the hob device 10a has two lighting strips 20a (cf. Figures 1 to 9 ). Only one of the lighting strips 20a is described below. The lighting strip 20a has a lighting unit 22a (cf. 4 ). In addition to the lighting unit 22a, the lighting strip 20a has a multiplicity of further lighting units 38a. Only one of the additional lighting units 38a is described below.

Each lighting unit 22a, 38a can be controlled independently of other lighting units 22a, 38a. The additional lighting unit 38a can be controlled independently of the lighting unit 22a. Only the lighting unit 22a is described below as representative of all the lighting units 22a, 38a. An analogous description could also be carried out for the further lighting unit 38a.

The lighting unit 22a is designed as a colored lighting unit 22a. In an operating state, the lighting unit 22a emits light with different colors. The lighting unit 22a is intended to emit light with at least two colors. In the present exemplary embodiment, the lighting unit 22a is provided for emitting light with 256 colors.

In one operating state, the lighting strip 20a is assigned to a multiplicity of heating units 16a. In the present exemplary embodiment, the lighting strip 20a is assigned to a marking of half of all the heating units 16a of this half of all the heating units 16a. The lighting strip 20a is assigned to the eighteen heating units 16a for a marking of eighteen heating units 16a.

In the present exemplary embodiment, the lighting strip 20a has a longitudinal extent 24a of essentially 445 mm. In an operating state, the lighting strip 20a is arranged parallel to a depth direction 54a. The lighting strip 20a has a longitudinal extension direction 56a, which is aligned parallel to the depth direction 54a in an operating state.

In the present exemplary embodiment, the lighting strip 20a extends essentially over the entire depth 26a of the mounting plate 12a. The mounting plate 12a has a depth 26a of essentially 480 mm. The lighting strip 20a extends over essentially 93% of an entire depth extent 26a of the mounting plate 12a.

The lighting strip 20a has a housing unit 28a (cf. Figures 2 to 9 ). In an operating state, the lighting unit 22a is arranged to a large extent within the housing unit 28a. In an operating state, the lighting unit 22a is largely surrounded by the housing unit 28a.

The lighting strip 20a has a printed circuit board 30a (cf. Figures 4 to 6 and 9 ). In an operating state, the printed circuit board 30a is arranged to a large extent within the housing unit 28a. The lighting unit 22a is arranged on the printed circuit board 30a in an operating state. In an operating state, the lighting unit 22a is in electrical contact with the printed circuit board 30a.

The lighting strip 20a has a diffusion unit 32a (cf. Figures 2 to 9 ). The diffusing unit 32a is provided for diffusing light emitted by the lighting unit 22a. In an operating state, the diffusing unit 32a diffuses light emitted by the lighting unit 22a. In the present exemplary embodiment, the diffusion unit 32a has a cuboid shape in a cross-sectional plane, which is aligned, in particular, perpendicular to a direction of longitudinal extension of the diffusion unit 32a.

In an operating state, the diffusion unit 32a is arranged on the housing unit 28a. In the present exemplary embodiment, the diffusion unit 32a is arranged to a large extent within the housing unit 28a in an operating state.

The lighting strip 20a includes at least one diffusing unit support member 58a. In the present exemplary embodiment, the lighting strip 20a has two diffusion unit holding elements 58a, which are arranged in mutually opposite end regions of the lighting strip 20a, in particular with respect to the direction of longitudinal extent 56a of the lighting strip 20a. Only one of the diffusion unit holding members 58a will be described below.

The diffusion unit holding member 58a is arranged on the housing unit 28a. The diffusion holding member 58a is integrally connected to the housing unit 28a. The housing unit 28a is formed in two parts in the present exemplary embodiment. The housing unit 28a has a first housing part element 60a and a second housing part element 62a. In an operating state, the first housing part element 60a and the second housing part element 62a are fastened to one another.

The lighting strip 20a has at least one fastening means 64a. In the present exemplary embodiment, the lighting strip 20a has five fastening means 64a.

Only one of the fastening means 64a is described below. In an operating state, the fastening means 64a fastens the first housing part element 60a and the second housing part element 62a to one another. In the present exemplary embodiment, the fastening means 64a is designed as a screw.

The lighting strip 20a has a sealing unit 34a (cf. 2 , 3 and 6 to 9 ). In an operating state, the sealing unit 34a largely seals off a lighting area 36a between the housing unit 28a and the set-up plate 12a. The sealing unit 34a is provided to seal the lighting area 36a between the housing unit 28a and the mounting plate 12a.

In one operating state, the housing unit 28a is arranged partially within the sealing unit 34a. In an operating state, the sealing unit 34a partially encloses a housing section of the housing unit 28a (cf. in particular 9 ). In an operating state, the housing section of the housing unit 28a is arranged on a region of the housing unit 28a that faces the mounting plate 12a.

The lighting strip 20a has a light separating unit 66a (cf. Figures 4 to 6 ). In an operating state, the light separating unit 66a is arranged on the housing unit 28a and, in particular, is connected in one piece to the housing unit 28a.

The light separating unit 66a has at least one light separating element 68a. In the present exemplary embodiment, the light-separating unit 66a has a multiplicity of light-separating elements 68a. Only one of the light separating elements 68a will be described below. The light separating element 68a is in the form of a bar. In an operating state, the light separating element 68a extends essentially parallel to a vertical direction 70a.

In an operating state, the light separating unit 66a partially separates, in particular by means of the light separating element 68a, light components from the lighting unit 22a and light components from the further lighting unit 38a. The light separating unit 66a is provided, in particular by means of the light separating element 68a, for at least partial separation of light components from the lighting unit 22a and light components from the further lighting unit 38a.

In the present exemplary embodiment, the lighting strip 20a has a multiplicity of free elements 72a (cf. Figures 2 to 4 and 7 to 9 ). Only one of the free-keeping elements 72a is described below. During assembly, the element 72a that is kept free is provided to prevent at least one object from penetrating into the illuminated region 36a that is partially defined by the illumination strip 20a.

In the present exemplary embodiment, the retaining element 72a is in the form of a tab. In an operating state, the free element 72a is arranged on the sealing unit 34a and, in particular, is connected in one piece to the sealing unit 34a.

In an operating state, the lighting strip 20a is arranged to a large extent within the hob outer housing unit 40a. In an operating state, the lighting strip 20a is arranged to a large extent within the storage space 42a.

In an operating state, the lighting strip 20a is fastened to a hob housing base 46a of the hob outer housing unit 40a (cf. 2 and 7 ). In the present exemplary embodiment, the lighting strip 20a has two fastening elements 44a. Only one of the fastening elements 44a is described below. In an operating state, the fastening element 44a fastens the housing unit 28a of the lighting strip 20a to the hob housing base 46a of the hob outer housing unit 40a. The fastening element 44a is provided for fastening the housing unit 28a to the hob housing base 46a of the hob outer housing unit 40a.

The lighting strip 20a is intended to be controlled by the control unit 52a (cf. 10 ). The lighting strip 20a has at least one control connection 84a. In the present exemplary embodiment, the lighting strip 20a has two control connections 84a. With respect to the direction of longitudinal extent 56a of the lighting strip 20a, the control connections 84a are arranged in mutually opposite end regions of the lighting strip 20a. As a result, the lighting strip 20a can be mounted flexibly on each hob side, which are arranged in particular in opposite end regions of the hob outer housing unit 40a with respect to a transverse direction.

In a method for operating the hob device 10a, half of all heating units 16a are marked in an operating state by means of a single lighting strip 20a (cf. 1 and 11 to 17 ).

For example, in one operating state, two cooking utensils 14a are set up on the mounting plate 12a (cf. 1 ). In an operating state, the lighting strip 20a indicates an extension 74a, 86a of each cooking utensil 14a of the cooking utensil 14a with respect to a direction 18a. In an operating state, the lighting strip 20a indicates an extension 74a of a first cooking utensil 14a of the cooking utensil 14a in the direction 18a. In an operating state, the lighting strip 20a indicates an extension 86a of a second cooking utensil 14a of the cooking utensil 14a in the direction 18a. The extension 74a of the first Cooking utensil 14a in the direction 18a is smaller than the extension 86a of the second cooking utensil 14a in the direction 18a.

In addition to the extension 74a, 86a of the cooking utensil 14a with respect to the direction 18a, the lighting strip 20a indicates a position of each cooking utensil 14a of the cooking utensil 14a in an operating state with respect to the direction 18a.

In an operating state, the lighting strip 20a indicates a heating state of the cooking utensil 14a (cf. 1 ). In an operating state, the lighting strip 20a uses different colors to indicate the heating state of the cooking utensil 14a, embodied in particular as heating power. For example, the lighting strip 20a indicates a high heating state, embodied in particular as heating power, with a different color than a low heating state, embodied in particular as heating power. The different colors are in 1 characterized by hatching of different densities, dense hatching being associated with a high heating output and wide hatching with a low heating output.

For example, based on the configuration 1 a cooking utensil 14a of the cooking utensil 14a is removed from the mounting plate 12a (cf. 11 ). In an operating state, the lighting strip 20a indicates a heating state in the form of residual heat. The lighting strip 20a indicates the heating state, in particular in the form of residual heat, even after the cooking utensil 14a has been removed from the mounting plate 12a, specifically until residual heat falls below a threshold value. For example, the lighting strip 20a indicates a high heating state, in particular in the form of residual heat, with a different color than a low heating state, in particular in the form of residual heat.

In an operating state, the lighting strip 20a indicates a movement of the cooking utensil 14a from a first set-up position 78a to a second set-up position 80a (cf. 12 and 13 ). In an operating state, the lighting strip 20a indicates the movement of the cooking utensil 14a by deactivating the lighting of the first set-up position 78a and activating a lighting of the second set-up position 80a. Before the activation of the lighting of the second set-up position 80a, the lighting strip 20a in an operating state displays an operator prompt by a change in a lighting property. In an operating state prior to the activation of the lighting of the second set-up position 80a, the lighting strip 20 displays an animation in order in particular to transmit the operating prompt to the operator. In the present exemplary embodiment, the operator prompt is a prompt for confirmation of a movement of the cooking utensil 14a from the first set-up position 78a to a second set-up position 80a.

In an operating state, the lighting strip 20a indicates a direction of movement 76a, in which the cooking utensil 14a can be moved (cf. Figures 14 to 16 ). In an operating state, the lighting strip 20a indicates the direction of movement 76a by means of an intensity curve, in particular by means of an intensity gradient. If, for example, a cooking utensil 14a is set up in a rear region of the mounting plate 12a, the lighting strip 20a indicates the direction of movement 76a in the direction of a front region of the mounting plate 12a (cf. 14 ). If, for example, a cooking utensil 14a is set up in a front area of the support plate 12a, the lighting strip 20a indicates the direction of movement 76a in the direction of a rear area of the support plate 12a (cf. 15 ). In the case of a cooking utensil 14a, which is arranged in a central area of the mounting plate 12a, the lighting strip 20a indicates the direction of movement 76a in the direction of a rear area of the mounting plate 12a and in the direction of a front area of the mounting plate 12a (cf. 16 ).

In a method for operating the hob device 10a, an extension 74a of the cooking utensil 14a is displayed in an operating state with respect to the direction 18a by means of the lighting strip 20a.

In an operating state, in particular as an alternative or in addition to the extension 74a of the cooking utensil 14a, the lighting strip 20a indicates a heating power that changes, in particular a predefined, in the direction 18a with respect to the direction 18a (cf. 17 ). If, for example, a particularly predefined heating output is greater in a front area of the mounting plate 12a than in a rear area of the mounting plate 12a and the heating output decreases monotonously from the front area in the direction of the rear area, the lighting strip 20a points with respect to the direction 18a which is in The heating power changing, in particular predefined, in the direction 18a by means of an intensity profile and/or by means of a color profile and/or by means of a brightness profile.

In Figures 18 to 21 further exemplary embodiments of the invention are shown. The following descriptions are essentially limited to the differences between the exemplary embodiments, with regard to components, features and functions that remain the same on the description of the exemplary embodiment of FIG Figures 1 to 17 can be referred. To distinguish between the exemplary embodiments, the letter a is in the reference numerals of the exemplary embodiment in FIGS Figures 1 to 17 by the letters b to e in the reference numerals of the embodiment of FIG Figures 18 to 21 replaced. With regard to components with the same designation, in particular with regard to components with the same reference symbols, it is possible in principle Also on the drawings and / or the description of the embodiment of Figures 1 to 17 to get expelled.

18 shows a lighting strip 20b of an alternative hob device 10b. The lighting strip 20b has a diffusion unit 32b, which is provided for scattering light emitted by lighting units 22b of the lighting strip 20b. In the present exemplary embodiment, the diffusion unit 32b has a U-shape in a cross-sectional plane, which is aligned in particular perpendicular to a direction of longitudinal extent of the diffusion unit 32b.

The lighting strip 20b has a housing unit 28b. The housing unit 28b is formed in two parts in the present exemplary embodiment. The housing unit 28b has a first housing part element 60b and a second housing part element 62b. In an operating state, the first housing part element 60b and the second housing part element 62b are fastened to one another. In an operating state, the first partial housing element 60a is arranged on a side of the lighting strip 20b that faces a mounting plate 12b. In an operating state, the second partial housing element 62a is arranged on a side of the lighting strip 20b facing away from the installation plate 12b.

The diffusion unit 32b is formed in one piece with the lighting strip 20b, in particular with the first housing part element 60b of the lighting strip 20b. In the present exemplary embodiment, the lighting strip 20b consists largely of plastic. The lighting strip 20b is free from a light separating unit.

In an operating state, a circuit board 30b of the lighting strip 20b is arranged inside the housing unit 28b, specifically inside the second housing part element 62b of the lighting strip 20b. The lighting strip 20b has a receiving groove (not shown), which is arranged in particular on the second housing part element 62b. The receiving groove is provided for holding and/or mounting the printed circuit board 30b. During assembly, the printed circuit board 30b is placed and/or pushed into the receiving groove in a push-in direction 88b. The insertion direction 88b is aligned essentially parallel to a longitudinal extension direction 56b of the lighting strip 20b. In an operating state, the printed circuit board 30b is held and/or mounted in the receiving groove.

19 shows a lighting strip 20c of an alternative hob device 10c. The lighting strip 20c has a light separating unit 66c. In an operating state, the light separating unit 66c is arranged within a housing unit 28c of the lighting strip 20c. In an operational state, the light separation unit 66c is on a printed circuit board 30c of the lighting strip 20c arranged. The light separating unit 66c and the housing unit 28c are formed as separate objects.

The light separating unit 66c has a plurality of light separating elements 68c. In each case one light separating element 68c is arranged between two lighting units 22c of the lighting strip 20c which are arranged adjacent to one another with respect to a longitudinal extension direction 56c of the lighting strip 20c. The light separating elements 68c are designed in the manner of webs and/or platelets. In an operating state, the light separating unit 66c, in particular the light separating elements 68c of the light separating unit 66c, forms light chambers with the housing unit 28c, in particular with the second housing part element 62c of the housing unit 28c. A number of light chambers and a number of lighting units 22c are essentially identical.

20 shows a lighting strip 20d of an alternative hob device 10d. The lighting strip 20d has a light separating unit 66d. In an operating state, the light separating unit 66d is arranged within a housing unit 28d of the lighting strip 20d. In an operating state, the light separating unit 66d is arranged at a distance from a printed circuit board 30d of the lighting strip 20d with respect to a vertical direction 70d. In an operating state, the light separating unit 66d is held and/or mounted by the housing unit 28d, specifically in a second housing part element 62d of the housing unit 28d.

The light separating unit 66d has a plurality of light separating elements 68d. Only one of the light separating elements 68d will be described below. The light separating element 68d is assigned to a lighting unit 22d of the lighting strip 20d. The light separating unit 66d is formed in one piece in the present exemplary embodiment. The light separating unit 66d has a base body 90d. The base body 90d has a plate-like shape. The main body 90d has an elongated shape. The light separating element 68d is designed as a recess and/or as an opening and/or as a hole in the base body 90d. Such a configuration of the light separating unit 66d is referred to as a "pinhole application".

21 shows a lighting strip 20e of an alternative hob device 10e. The lighting strip 20e has a light separating unit 66e. In an operating state, the light separating unit 66e is arranged inside a housing unit 28e of the lighting strip 20e. In an operating state, the light separating unit 66e is arranged on a circuit board 30e of the lighting strip 20e with respect to a vertical direction 70e. In an operating state, the light separating unit 66e is held and/or mounted by the printed circuit board 30e, in particular directly and/or indirectly.

The light separating unit 66e has a plurality of light separating elements 68e. In the present exemplary embodiment, the light separating unit 66e has a multi-part design. A number of light separating elements 68e and a number of lighting units 22e of the lighting strip 20e are identical. Only one of the light separating elements 68e and only one of the lighting units 22e will be described below.

The light separating element 68e is assigned to the lighting unit 22e of the lighting strip 20e. In an operating state, the light separating element 68e is arranged to a large extent above the lighting unit 22e with respect to a vertical direction 70e. In the present exemplary embodiment, the light-separating element 68e is designed as a collimator.

Reference sign

10

hob device

12

installation plate

14

cookware

16

heating unit

18

Direction

20

lighting strips

22

lighting unit

24

longitudinal extent

26

depth extension

28

housing unit

30

circuit board

32

diffusion unit

34

sealing unit

36

luminous area

38

Another light unit

40

hob outer housing unit

42

storage room

44

fastener

46

Hob housing bottom

48

hob

50

operator interface

52

control unit

54

depth direction

56

longitudinal direction

58

diffusion unit holding member

60

First housing part element

62

Second housing part element

64

fasteners

66

light separation unit

68

light separating element

70

vertical direction

72

free element

74

extent

76

direction of movement

78

First installation position

80

Second installation position

82

cooking system

84

control connection

86

extent

88

insertion direction

90

body

Claims (15)

1. Hob device, in particular induction hob device, with at least one placement plate (12a-e), which is provided for a placement of at least one item of cookware (14a-e), with at least two heating units (16a-e) for heating the item of cookware (14a-e), with at least one illumination strip (20a-e), characterised in that the illumination strip (20a-e) has at least one lighting unit (22a-e) and in at least one operating state indicates at least one extension (74a-e, 86a-e) of the item of cookware (14a-e) in relation to at least one direction (18a-e), namely a maximum distance between two points of a perpendicular projection of the item of cookware (14a-e) on a plane.
2. Hob device according to claim 1, characterised in that the illumination strip (20a-e) has a longitudinal extension (24a-e) of at least 200 mm.
3. Hob device according to claim 1 or 2, characterised in that the illumination strip (20a-e) extends at least substantially over an entire depth extension (26a-e) of the placement plate (12a-e).
4. Hob device according to one of the preceding claims, characterised in that the illumination strip (20a-e), in the operating state, indicates at least one position of the item of cookware (14a-e) in relation to the direction (18a-e).
5. Hob device according to one of the preceding claims, characterised in that the lighting unit (22a-e) is embodied as a coloured lighting unit (22a-e) and is provided for emitting light with at least two colours.
6. Hob device according to one of the preceding claims, characterised in that the illumination strip (20a-e) has at least one further lighting unit (38a-e), which is able to be actuated independently of the lighting unit (22a-e).
7. Hob device according to one of the preceding claims, characterised in that the illumination strip (20a-e), in the operating state, indicates at least one heating state of the item of cookware (14a-e).
8. Hob device according to one of the preceding claims, characterised in that the illumination strip (20a-e), in the operating state, indicates at least one direction of movement (76a-e), in which the item of cookware (14a-e) can be moved.
9. Hob device according to claim 8, characterised in that the illumination strip (20a-e), in the operating state, indicates the direction of movement (76a-e) by means of at least one lighting intensity curve.
10. Hob device according to one of the preceding claims, characterised in that the illumination strip (20a-e), in the operating state, indicates at least one movement of the item of cookware (14a-e) from a first placement position (78a-e) to a second placement position (80a-e).
11. Hob device according to claim 10, characterised in that the illumination strip (20a-e), in the operating state, indicates the movement of the item of cookware (14a-e) by deactivating the illumination of the first placement position (78a-e) and activating an illumination of the second placement position (80a-e).
12. Hob device according to claim 11, characterised in that the illumination strip (20a-e), in the operating state, indicates at least one operating prompt, before activating the illumination of the second placement position (80a-e), by at least a changing of at least one illumination property.
13. Hob, in particular induction hob, with at least one hob device (10a-e) according to one of the preceding claims.
14. Cooking system with the hob (48a-e) according to claim 13 and with the item of cookware (14a-e).
15. Method for operating a hob device (10a-e), according to one of claims 1 to 12, with at least one placement plate (12a-e), which is provided for a placement of at least one item of cookware (14a-e), with at least two heating units (16a-e) for heating the item of cookware (14a-e), with at least one illumination strip (20a-e), characterised in that the illumination strip (20a-e), in at least one operating state, at least one extension (74a-e, 86a-e) of the item of cookware (14a-e) in relation to at least one direction (18a-e) is indicated by means of the illumination strip (20a-e), namely a maximum distance between two points of a perpendicular projection of the item of cookware (14a-e) on a plane.

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