EP3384730B1 - Cooking hob - Google Patents

Description

The invention relates to a hob device according to the preamble of claim 1.

From the European patent application EP 2 252 130 A1 a hob device with a heating area and with a display unit is already known which has precisely one marking property. In an operating mode in which cooking utensils are placed on the heating area for heating purposes, the display unit marks the heating area by means of a marking as a function of activation by a control unit. The control unit keeps the marking property of the marking of the heating area constant in the operating mode. The marking property is independent of an operating parameter DE 11 2013 003978 T5 discloses a hob device according to the preamble of claim 1.

The object of the invention is, in particular, to provide a device of the generic type with improved properties with regard to a high level of comfort. The object is achieved according to the invention by the features of claim 1, while advantageous configurations and developments of the invention can be found in the subclaims.

The invention is based on a hob device, in particular an induction hob device, with at least one heating area on which at least one cooking utensil can be set up for heating, and with a dynamic display unit that is provided to mark the heating area in at least one operating mode.

It is proposed that the hob device has a control unit which is provided in the operating mode at least one marking property of the marking of the heating area, in particular of the above-mentioned heating area, on which in particular at least one cookware can be set up for heating, depending on at least one To choose operating parameters. A “hob device” should in particular mean at least one part, in particular one Subassembly, a hob, in particular an induction hob, are understood. In particular, the hob device can also include the entire hob, in particular the entire induction hob. A “heating area” is to be understood as meaning, in particular, an advantageously two-dimensional area which is provided for setting up cooking utensils and / or for placing items to be cooked, in particular in order to heat the set up cooking utensils and / or the placed items to be cooked. In one installation position, the heating area is advantageously delimited downward by a hob plate, in particular in a direction of gravity. The hob device has, in particular, at least two, in particular at least three, advantageously at least four, particularly advantageously at least five, preferably at least seven and particularly preferably several heating units, which are provided in particular to provide the heating area with one for heating set up cooking utensils and cooking utensils in at least one operating state / or to supply the required energy to the food being cooked on top. The heating units could for example be arranged in the form of a matrix and / or in the form of a classic hob, in particular in the form of stand-alone heating units. The heating area, in particular a size of the heating area and / or a shape of the heating area, is in particular defined by an arrangement and / or size of the heating units. In particular, the heating area has an at least substantially constant size and / or shape, which is in particular independent of a size of a cookware and / or a shape of a cookware. The heating area, in particular a size of the heating area and / or a shape of the heating area, is in particular independent of the size of a cookware. For example, especially in the case of cooking utensils and / or items to be cooked that fill and / or cover the entire heating area, the heating area, in particular a size of the heating area and / or a shape of the heating area, could be identical to cooking utensils, in particular the size of cooking utensils and / or with a shape of a cooking utensil and / or with a cooking utensil diameter. The heating area is advantageously larger than a cookware, in particular than a cookware diameter. In particular, the heating area is designed differently from a heating zone. A “hob plate” is to be understood in particular as an element which is provided to carry cooking utensils and / or food placed on top of the heating area in an installation position. The hob plate consists in particular at least to a large extent of glass and / or glass ceramic. Under "at least to a large extent" is intended in particular to include a proportion of at least 70%, in particular at least 80%, advantageously at least 90% and preferably at least 95%. A "display unit" is to be understood in particular as a unit which is provided to provide an operator with the visual, for example additionally acoustically and / or haptically, the marking of the heating area and in particular additionally at least one display parameter. The display parameter could, for example, be information and / or a time specification and / or an operating request and / or a request for action and / or a selection. The display unit advantageously has at least one display element, which is advantageously an LED. The display unit advantageously extends over a proportion of at least 20%, in particular of at least 40%, advantageously of at least 50%, particularly advantageously of at least 70%, preferably when viewing a projection onto a plane that is in particular aligned parallel to the hob plate of at least 80% and particularly preferably of at least 90% of a transverse extent of the heating area and / or a longitudinal extent of the heating area. An area at least partially enclosed by the display unit takes in particular a value of at least 20%, in particular of at least 40%, advantageously of at least 50%, particularly advantageously of at least 70%, preferably of at least 80% and particularly preferably of at least 90% of an area extension of the heating area. The display unit differs in particular from a display, in particular an LCD display, and advantageously also from a liquid crystal display. A “longitudinal extension” of an object is to be understood as meaning, in particular, extension of the object in a longitudinal extension direction of the object. A “longitudinal plug-in direction” of an object is to be understood in particular as a direction which is aligned parallel to a longest side of a smallest imaginary geometric cuboid which just completely surrounds the object. An “extension” of an object is to be understood as meaning, in particular, a maximum distance between two points of a perpendicular projection of the object onto a plane. A “transverse extension” of an object is to be understood to mean, in particular, extension of the object in a transverse extension direction oriented perpendicular to the longitudinal extension direction of the object. A “dynamic” display unit should be understood to mean, in particular, a display unit which is provided to advantageously consciously change at least one marking property, in particular as a function of activation of the display unit by the control unit. The A 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 as a result of wear and / or wear. 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 to control and / or close at least the heating area regulate. The control unit preferably comprises a computing unit and, in particular, in addition to the computing unit, a memory unit with a control and / or regulating program stored therein which is provided to be executed by the computing unit. The control unit is provided to form at least one heating zone for heating the set up cooking utensils from at least one heating unit which at least partially defines the heating area in the case of a set up cooking utensil. The control unit is provided in particular to control the display unit. The control unit is advantageously provided to mark the heating area permanently in the operating mode, in particular during the entire operating mode and advantageously permanently visible to an operator. In particular, the control unit is provided to permanently mark the heating area in the operating mode, independently of any cookware that has been set up and / or of a product to be cooked on top and / or of a heating process being carried out. “Permanently” should be understood to mean in particular continuously and / or continuously and / or avoiding an unmarked period of time, in particular a change in a wavelength and / or an intensity and / or a color and / or a frequency being possible. In particular, the display unit could be provided in particular to change a wavelength and / or an intensity and / or a color and / or a frequency. The operating mode is in particular independent of any cookware. The operating mode is independent of placing cookware in the heating area. The operating mode is independent of the removal of cookware from the heating area. For example, the operating mode could be adjustable and / or selectable and / or activated and / or deactivated by means of an operator input using an operator interface. Alternatively or additionally, the operating mode could in particular be stored in a memory unit of the control unit. For example, the operating mode could be executable by the control unit, in particular automatically. Under one “Marking property” is to be understood in particular as a property of an actual marking. The marking property is in particular permanently visible to an operator in the operating mode. The marking property could in particular be an illumination property. In particular, the marking could be lighting. For example, the hob device, in particular in addition to the dynamic display unit, could have a static display unit, which could be provided for marking the heating area. The static display unit could, for example, be a marking of the heating area made in a surface of the hob plate. “Provided” is to be understood in particular as specifically programmed, 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.

The configuration according to the invention can in particular achieve a high level of comfort. In particular, improved operability can be achieved and / or at least information relating to an operating parameter of the hob can be transmitted to an operator. In particular, by marking the display unit, a visual and / or intuitive identification of operating properties and / or operating parameters can be made possible, as a result of which, in particular, improved communication with an operator can be achieved. In particular, a possible set-up position for cooking utensils can be identified inexpensively, for example by dispensing with an LCD display and / or a liquid crystal display, and / or conveniently.

It is further proposed that the control unit is provided to keep a size of the marking, in particular of the heating area and advantageously of each heating area, at least essentially constant in the operating mode. In particular, the control unit is provided to keep an area and / or a shape of the marking, in particular of the heating area and advantageously also of each heating area, at least substantially constant in the operating mode. In this way, in particular, optimal marking of the heating area can be provided. In particular, an operator can be provided with certainty about the size of the heating area and thus, in particular, about safe operability.

It is also proposed that the control unit is provided to change the marking property in the operating mode as a function of a change in the operating parameter. In particular, the control unit is provided to adapt the marking property to a property of the operating parameter in the operating mode. For example, the control unit could be provided to change the marking property in the operating mode as a function of a change in a state of the operating parameter, wherein the operating parameter could in particular be a cooking state. Alternatively or additionally, the control unit could be provided to change the marking property in the operating mode as a function of a change in a value of the operating parameter, wherein the operating parameter could in particular be a heating parameter. In this way, a high degree of flexibility can be achieved in particular. Information about a change in the operating parameter can be made available to an operator in a particularly advantageous manner.

For example, the marking property could be a color and / or a frequency and / or a wavelength. The marking property is preferably an intensity of the marking of the heating area. The control unit is advantageously provided to change the intensity of the marking of the heating area monotonically, in particular monotonically increasing, with a value of the operating parameter that changes monotonically, in particular monotonically increasing. An “intensity” of a marking is to be understood as meaning, in particular, a radiation intensity and / or a light intensity and / or a brightness and / or a saturation, in particular a color saturation. For example, the control unit could in particular additionally be provided to select the intensity of the marking of the heating area as a function of the utilization of the heating units defining the heating area. The control unit could, for example, be provided to change the intensity of the marking of the heating area monotonically to a monotonically changing value of the utilization of the heating units defining the heating area. The marking property is advantageously a lighting property. The marking is advantageously an illumination. As a result, an operator can check a heating parameter used and / or set in a particularly simple and / or convenient manner.

In the case of an at least essentially constant operating parameter, the control unit is advantageously provided to keep the intensity of the marking of the heating area at least essentially constant. The control unit is preferably provided to display, in the operating mode, an operating parameter that changes in at least one direction aligned parallel to a hob plate by means of the marking of the heating area, in particular by means of a change in the marking property along the direction. In this way, in particular, an intuitive identification of the heating parameter can be made possible. In particular, at least information relating to an operating state and / or an operating parameter can be transmitted to an operator, such as information relating to residual heat and / or relating to a heating parameter and / or relating to activated sub-areas of the heating area and / or relating to heating zones of the heating area.

For example, the direction could be a transverse direction and the control unit could be provided in particular to display the heating parameter changing in the transverse direction by means of the marking. Preferably the direction is a depth direction. The depth direction is aligned in particular from an area of the heating area facing an operator into an area of the heating area facing away from an operator and in particular parallel to a main plane of extent of the hob plate. In particular, the transverse direction is oriented at least substantially perpendicular to the depth direction and in particular parallel to a main extension plane of the hob plate. In the case of an operating parameter that changes in the depth direction, the control unit is provided in particular to select a different, in particular a higher and / or lower, intensity of the marking of the heating area in the area of the heating area facing an operator than in the area of the heating area facing away from the operator Heating area. A "main plane of extent" of an object is to be understood in particular as a plane which is parallel to a largest side surface of a smallest imaginary geometric cuboid, which just completely surrounds the object, and in particular runs through the center of the cuboid. In particular, this enables a high level of comfort for an operator.

The operating parameter could, for example, be a cooking state and / or an input variable which, in particular, could be predeterminable and / or input and / or adjustable by an operator by means of an operator input using an operator interface. The operating parameter is preferably a heating parameter. For example, the heating parameter could be a heating power and / or a heating power density and / or a heating power level and / or a temperature. In the case of a heating parameter which is a heating power and / or a heating power density and / or a heating power level, the operating mode could in particular be an operating mode called "power move", in which in particular a change in the heating parameter by moving the cookware in the heating area , in particular along the direction, can be made. In the case of a heating parameter that is a temperature, the operating mode could in particular be an operating mode referred to as "temperature move", in which in particular a change in the heating parameter can be made by shifting the cookware in the heating area, in particular along the direction. As a result, it is possible in particular to create a possibility of optimally marking an operating mode referred to as “power move” and / or as “temperature move”.

It is also proposed that the heating area comprises at least one composite heating zone. In particular, the heating area, advantageously the composite heating zone, is defined by at least two, in particular at least three, advantageously at least four, particularly advantageously at least five, preferably at least seven and particularly preferably several heating units. For example, the heating area could consist of the composite heating zone and in particular be defined by the heating units defining the composite heating zone. In addition to the heating units defining the composite heating zone, the heating area is advantageously defined by at least one further heating unit. A heating zone is in particular an area which is defined in particular by at least one heating unit which supplies the heating zone with energy, in particular in the form of heat, advantageously in the form of an electromagnetic alternating field, in at least one heating operating state. In particular, the heating zone, in particular a surface of the heating zone, is penetrated and / or penetrated by an electromagnetic alternating field in the heating operating state. The heating zone, in particular a size of the heating zone and / or a shape of the heating zone is defined in particular by the heating unit, in particular by a size of the heating unit and / or by a shape of the heating unit, which supplies energy to the heating zone in the heating operating state. In particular, the heating zone, in particular a size of the heating zone and / or a shape of the heating zone, is at least substantially independent of a set up cooking utensil, in particular a size of a set up cooking utensil and / or a shape of a set up cooking utensil. For example, the heating area, which could in particular comprise a composite heating zone, could be defined by at least two heating units and in particular form a variable cooking surface. The heating units could in particular be arranged in a row and / or in the form of a hob matrix. Alternatively, the heating area, which could in particular comprise a composite heating zone, could be defined by at least two separate heating units. A "stand-alone" heating unit is to be understood as meaning, in particular, a heating unit which is at a distance of at least 1 cm, in particular at least 2 cm, advantageously at least 3 cm, particularly advantageously at least 4 cm and preferably at least 5 cm from one of the heating units has adjacent, in particular closest heating unit. In particular, a hob that has the stand-alone heating unit is designed as a classic hob. A "classic" hob is to be understood in particular as a hob with at least one stand-alone heating unit on which the stand-alone heating unit is optically identified, in particular marked, for example by screen printing and / or by the display unit and / or by at least one display element of the display unit, such as an LED. In particular, a classic hob differs from a matrix hob. A matrix hob differs in particular from a classic hob in that it has a variable cooking surface. As a result, cooking utensils of various sizes in particular can be heated and / or heated by means of the heating area.

It is also proposed that the control unit is provided to at least partially identify an edge of the heating area by means of the marking in the operating mode. For example, the control unit could be provided to at least essentially completely identify a surge in the heating area in the operating mode by means of the marking. The control unit is in particular provided to identify the heating area at least in sections in the operating mode by means of the marking. In particular, the control unit is provided to identify corner points of the heating area by means of the marking in the operating mode and in particular to mark the shortest connections between the corner points at least in sections and / or to leave them unmarked at least in sections. In particular, the control unit is provided in the operating mode, the shortest connections between the corner points to a proportion of at least 30%, in particular of at least 40%, advantageously of at least 50%, particularly advantageously of at least 60% and preferably of at least 70% of a longitudinal extension the shortest connections between the corner points should be left unmarked. When considering a projection in a plane which is aligned in particular parallel to a main plane of extent of the hob plate, the boundary of the heating area is in particular a periphery of the heating area. This enables optimal marking of the heating area, particularly at low cost. Low costs can be achieved in particular by the possibility of arranging at least part of the display unit, such as at least one display element, in particular an LED, in an area between at least two heating units defining the heating area.

It is further proposed that the control unit is provided to mark at least one position of individual heating units defining the heating area by means of the marking in the operating mode. For example, the control unit could be provided to mark the position of the heating units defining the heating area by marking an edge of the heating units defining the heating area in addition to marking the border of the heating area. Alternatively or additionally, the control unit could be provided to mark at least one position of a center of gravity and / or a center point of the heating units defining the heating area by means of the marking. As a result, cooking utensils can be set up specifically on the appropriate heating units, in particular depending on the size of individual heating units defining the heating area, whereby a heating zone that is optimally suited to heating a given cooking utensil can be selected in a simple manner.

It is further proposed that the control unit is provided to display at least one temperature of an in particular activated and / or deactivated heating zone of the heating area by means of the marking, in particular by means of the marking property, in the operating mode. The temperature of the heating zone is in particular a temperature of a surface of the heating area which is arranged in the area of the heating zone and which is formed in particular by a surface of the hob plate. For example, the control unit could in particular additionally be provided to display at least a residual heat of an in particular deactivated heating zone of the heating area in the operating mode by means of the marking, in particular by means of the marking property. In particular, the control unit could be provided to reduce an intensity of the marking in the operating mode monotonically, in particular linearly, with decreasing temperature. In particular, a temperature of a deactivated heating zone decreases with an increasing time interval between the deactivation of the deactivated heating zone and a point in time when the temperature of the deactivated heating zone is displayed. In particular, a high level of security can thereby be ensured and / or a warning can be transmitted to an operator in a simple and / or intuitive manner.

A particularly high level of convenience can be achieved by a hob, in particular by an induction hob, with at least one hob device according to the invention.

The comfort can be further increased by a method according to patent claim 13.

The hob device is not intended to be restricted to the application and embodiment described above. In particular, the hob device can perform one of the functions mentioned herein in order to fulfill a functionality described herein Number of individual elements, components and units have a different number.

Further advantages emerge from the following description of the drawings. 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 Kochfeld mit einer Kochfeldvorrichtung außerhalb eines Betriebsmodus in einer schematischen Draufsicht,

Fig. 2

das Kochfeld mit der Kochfeldvorrichtung in einem Betriebsmodus vor einem Beginn eines Heizbetriebszustands in einer schematischen Draufsicht,

Fig. 3

das Kochfeld mit der Kochfeldvorrichtung in einem Betriebsmodus vor in dem Heizbetriebszustand in einer schematischen Draufsicht,

Fig. 4

das Kochfeld mit der Kochfeldvorrichtung in einem Betriebsmodus vor im Anschluss an den Heizbetriebszustand in einer schematischen Draufsicht,

Fig. 5

verschiedene Anzeigeelemente einer Anzeigeeinheit der Kochfeldvorrichtung in einer schematischen Darstellung,

Fig. 6

ein Kochfeld mit einer alternativen Kochfeldvorrichtung in einem Betriebsmodus in einer schematischen Draufsicht und

Fig. 7

ein Kochfeld mit einer alternativen Kochfeldvorrichtung in einem Betriebsmodus in einer schematischen Draufsicht.

Show it:

Fig. 1

a hob with a hob device outside of an operating mode in a schematic top view,

Fig. 2

the hob with the hob device in an operating mode before the start of a heating operating state in a schematic top view,

Fig. 3

the hob with the hob device in an operating mode before in the heating operating state in a schematic top view,

Fig. 4

the hob with the hob device in an operating mode before subsequent to the heating operating state in a schematic top view,

Fig. 5

various display elements of a display unit of the hob device in a schematic representation,

Fig. 6

a hob with an alternative hob device in an operating mode in a schematic plan view and

Fig. 7

a hob with an alternative hob device in an operating mode in a schematic plan view.

Fig. 1 shows a hob 26a, which is designed as an induction hob, with a hob device 10a, which is designed as an induction hob device. The Hob device 10a has a hob plate 20a. In an assembled state, the hob plate 20a forms part of a hob outer housing. The hob plate 20a is provided for setting up cooking utensils 14a.

The hob device 10a has a plurality of heating units 24a. In the figures, only one object of multiple existing objects is provided with a reference symbol. The heating units 24a define a variable cooking surface area. Four of the heating units 24a are arranged in a row. Alternatively, the hob device could have a plurality of heating units, which could be arranged in the form of a matrix.

In the present exemplary embodiment, the hob device 10a has eight heating units 24a. The heating units 24a are provided to heat cooking utensils 14a placed on the hob plate 20a above the heating units 24a. The heating units 24a are designed as induction heating units.

The hob device 10a has a user interface 28a for inputting and / or selecting operating parameters, for example a heating power and / or a heating power density and / or a heating zone. The operator interface 28a is provided for outputting a value of an operating parameter to an operator.

The hob device 10a has a control unit 18a. The control unit 18a is provided to carry out actions and / or to change settings as a function of operating parameters entered by means of the operator interface 28a. The control unit 18a regulates an energy supply to the heating units 24a in a heating operating state.

In the present exemplary embodiment, the hob device 10a has two heating areas 12a. The heating regions 12a are arranged next to one another with respect to a transverse direction. Only one of the heating areas 12a is described below. In the present exemplary embodiment, the heating area 12a is defined by four heating units 24a.

The heating area 12a extends from an area facing an operator into an area facing away from an operator. A cookware 14a can be set up on the heating area 12a for heating purposes.

The hob device 10a has a dynamic display unit 16a. The display unit 16a is provided in an operating mode for marking the heating area 12a. The marking is a lighting. In the operating mode, the display unit 16a is provided to illuminate the heating area 12a.

The display unit 16a has at least one display element 30a. In the present exemplary embodiment, the display unit 16a has a plurality of display elements 30a. Only one of the display elements 30a is described below. The display element 30a is an LED.

For example, an operator activates the operating mode by means of an operator input using the operator interface 28a. In the operating mode, the control unit 18a selects a marking property of the marking of the heating area 12a as a function of an operating parameter.

A size of the heating area 12a is substantially constant in the operating mode. The control unit 18a keeps a size of the marking of the heating area 12a essentially constant in the operating mode.

When the operating mode is activated, the control unit 18a marks the heating area 12a by means of the marking provided by the display unit 16a. In the operating mode, the control unit 18a changes the marking property as a function of a change in the operating parameter. In the present exemplary embodiment, the marking property is an intensity of the marking of the heating area 12a. When the operating mode is activated, the control unit 18a marks the heating area 12a until the start of a heating operating state, in which in particular at least one cooking utensil 14a placed on the heating area 12a is heated with a low intensity of the operating parameter (cf. Fig. 2 ).

Alternatively, the control unit could be provided to mark each heating area with a low intensity of the operating parameter and in particular to mark this heating area with a higher intensity of the operating parameter when the operating mode is activated in one of the heating areas.

In the present exemplary embodiment, the operating mode is an operating mode referred to as “power move”. Alternatively, the operating mode could be an operating mode referred to as “temperature move”.

In the operating mode, the control unit 18a assigns a predefined heating parameter to each heating unit 24a. In the operating mode, the control unit 18a assigns a heating unit 24a arranged in the area facing an operator to a greater value of the heating parameter than a heating unit 24a arranged in the area facing away from an operator.

In the present exemplary embodiment, the control unit 18a selects the marking property of the marking of the heating area 12a as a function of the heating parameter. The operating parameter is a heating parameter in the operating mode.

In the operating mode, the control unit 18a displays an operating parameter that changes in a direction 22a aligned parallel to the hob plate 20a by means of the marking of the heating area 12a. The direction 22a points from the area facing an operator into the area facing away from an operator. The direction 22a is a depth direction. In the present exemplary embodiment, the operating parameter decreases monotonically in the direction 22a.

In the event that cooking utensils 14a are placed on the heating area 12a, the control unit 18a starts the heating operating state. In the heating operating state, the control unit 18a regulates the heating of the cookware 14a. In the heating operating state, the control unit 18a regulates an energy supply to those heating units 24a above which the cooking utensils 14a are placed. In the heating operating state, the control unit 18a marks the heating area 12a with a high intensity of the operating parameter (cf. Fig. 3 ).

The heating units 24a which heat the cooking utensils 14a define a heating zone (not shown). In the operating mode, the control unit 18a displays a temperature of an activated heating zone of the heating area 12a by means of the marking. For example, the control unit could indicate a high temperature of the heating zone of the heating area with a first color, such as in particular red, and a low temperature of the heating zone of the heating area with a second color different from the first color, such as in particular blue, by means of the marking. The marking property could, for example, be a color of the marking of the heating area. Alternatively or additionally, the control unit could display different temperatures through different intensities. The marking property could be, for example, an intensity of the marking of the heating area.

In the present exemplary embodiment, the heating zone of the heating area 12a is defined by two heating units 24a. The heating zone is a composite heating zone. The heating area 12a comprises the composite heating zone. The composite heating zone is part of the heating area 12a. In the heating operating mode, the heating zone defines an activated sub-area of the heating area 12a.

In the operating mode, the control unit 18a marks the activated partial area of the heating area 12a and a deactivated part of the heating area 12a. The control unit 18a marks the entire heating area 12a in the operating mode. In the operating mode, the control unit 18a partially identifies a boundary of the heating area 12a.

The display unit 16a is arranged in the vicinity of the heating units 24a. The display unit 16a partially surrounds the heating area 12a. A display element 30a is arranged in each case at prominent points on the border of the heating area 12a. The display unit 16a has display elements 30a of different geometries (cf. Fig. 5 ).

The display unit 16a has a first display element 30a '. The first display element 30a ′ has an essentially L-shaped and / or hook-shaped and / or boomerang-shaped shape. The first display element 30a 'is provided for identifying a corner of the heating area 12a. The first display element 30a 'is provided to identify a delimitation of the heating area 12a. Alternatively, the first display element could be provided to identify a delimitation of a heating unit.

The display unit 16a has a second display element 30a ″. The second display element 30a ″ has an elongated, substantially rectangular shape. The second display element 30a ″ is provided to identify an elongated lateral border of the heating area 12a. In the present exemplary embodiment, the second display element 30a ″ has an essentially continuous, elongated, essentially rectangular shape.

The display unit 16a has a third display element 30a '". The third display element 30a'" has a plurality of essentially square-shaped shapes which are arranged in a row. The third display element 30a '"has an essentially elongated shape which is defined by the plurality of essentially square shapes. The third display element 30a'" is provided for identifying an elongated lateral border of the heating area 12a.

The display unit 16a has a fourth display element 30a "". The fourth display element 30a ″ ″ is defined by two first display elements 30a ′, which adjoin one another along a respective edge of the shapes of the first display elements 30a ′. The first display elements 30a ′ defining the fourth display element 30a ″ ″ are arranged essentially mirror-symmetrically.

In the present exemplary embodiment, the marking of the heating area 12a has four first display elements 30a 'and eight second display elements 30a ". The first display elements 30a' are provided for marking corners of the heating area 12a. A longitudinal direction of a respective second display element 30a" is essentially parallel aligned with direction 22a. The direction 22a is aligned parallel to a longitudinal extension direction of the heating region 12a. The second display elements 30a ″ are arranged on opposite sides of the heating region 12a with respect to the transverse direction. The second display elements 30a ″ are arranged essentially evenly distributed between two first display elements 30a ′ which are closest to one another with respect to the direction 22a.

The second display elements 30a ″ are arranged essentially at the level of a center of gravity and / or center of the heating units 24a. In the operating mode, the control unit 18a marks a position of individual heating units 24a defining the heating area 12a by means of the marking.

If the cooking utensils 14a are removed from the heating area 12a, the control unit 18a ends the heating mode (cf. Fig. 4 ). The control unit 18a stops a supply of energy to the heating units 24a defining the heating zone. If the heating mode is terminated, the activated heating zone becomes a deactivated heating zone.

Immediately after the end of the heating mode, the deactivated heating zone has a slightly lower temperature than the activated heating zone shortly before the end of the heating mode. In the operating mode, the control unit 18a displays a temperature of a deactivated heating zone of the heating area 12a by means of the marking.

In one method with the hob device 10a, the heating area 12a is marked by means of the marking of the heating area 12a. In the operating mode, a marking property of the marking of the heating area 12a is selected in the method as a function of an operating parameter.

In Fig. 6 and 7th two further embodiments of the invention are shown. The following descriptions are essentially limited to the differences between the exemplary embodiments, with reference to the description of the exemplary embodiment in relation to components, features and functions that remain the same Figs. 1 to 5 can be referenced. To distinguish the exemplary embodiments, the letter a is in the reference numerals of the exemplary embodiment in FIG Figs. 1 to 5 by the letters b and c in the reference numerals of the embodiment of Fig. 6 and 7th replaced. With regard to components with the same designation, in particular with regard to components with the same reference symbols, the drawings and / or the description of the exemplary embodiment of FIG Figs. 1 to 5 to get expelled.

Fig. 6 shows a hob 26b with an alternative hob device 10b. In the present exemplary embodiment, the hob device 10b has twelve heating units 24b. A dynamic display unit 16b of the hob device 10b is provided in an operating mode for marking a heating area 12b of the hob device 10b. In the operating mode, the control unit 18b selects a marking property of the marking of the heating area 12b as a function of an operating parameter.

In the operating mode, the control unit 18b marks a position of individual heating units 24b defining the heating area 12b by means of the marking. In the operating mode, the control unit 18b marks spaces between heating units 24b that are closest to one another. In the operating mode, the control unit 18b partially identifies a boundary of the heating area 12b by means of the marking. In the operating mode, the control unit 18b marks the edge-side, in particular with respect to a direction 22b, which is a depth direction, upper and / or lower and / or lateral boundaries of the heating units 24b.

In the operating mode, the control unit 18b marks each heating unit 24b by means of four display elements 30b of the display unit 16b. In the operating mode, the control unit 18b partially assigns the same display elements 30b to heating units 24b that are closest to one another. Display elements 30b, which mark a space between two heating units 24b that are closest to one another, are assigned to both heating units 24b in the same way.

In the present exemplary embodiment, the marking of the heating area 12b has ten second display elements 30b ″. A direction of longitudinal extent of a respective second display element 30b ″ is oriented essentially perpendicular to the direction 22b. Five second display elements 30b ″ are arranged one behind the other in the direction 22b. Two second display elements 30b ″ are arranged on opposite sides of the heating area 12b with respect to a transverse direction. The transverse direction is oriented perpendicular to the direction 22b.

Fig. 7 shows a hob 26c with an alternative hob device 10c. In the present exemplary embodiment, the hob device 10c has four heating units 24c, which define a variable cooking surface area. The hob device 10c has two separate heating units 32c. The stand-alone heating units 32c define a heating area 12c of the hob device 10c.

Alternatively, the hob device could have two heating units, which together could define a coherent heating zone. For example, the heating units could be arranged concentrically to one another. Alternatively or additionally, the heating units could be directly adjacent to one another. Here, for example, a first of the heating units could have an essentially circular shape and a second of the heating units could have an essentially sickle-shaped shape. The second heating unit could at least partially encompass the first heating unit.

A dynamic display unit 16c of the hob device 10c is provided in an operating mode for marking the heating area 12c. In the operating mode, the control unit 18c selects a marking property of the marking of the heating area 12c as a function of an operating parameter.

Reference number

10

Hob device

12th

Heating area

14th

Cookware

16

Display unit

18th

Control unit

20th

Hob plate

22nd

direction

24

Heating unit

26th

Hob

28

Operator interface

30th

Display element

32

Stand-alone heating unit

Claims (13)

1. Hob apparatus having at least one heating region (12a-c) on which at least one cooking container (14a-c) can be placed for heating purposes, and comprising a dynamic display unit (16a-c) which is provided for identifying the heating region (12a-c) in at least one operating mode, which is independent of placing and removing the cooking container (14a-c) in and out of the heating region (12a-c) and having a control unit (18a-c), which is provided , in the case of a placed cooking container (14a-c), to form at least one heating zone for heating the placed cooking container (14a-c) from at least one heating unit (24a-c) at least partially defining the heating region (12a-c), characterised in that the control unit (18a-c) is provided for selecting at least one identifying property of the identification of the heating region (12a-c) in the operating mode, depending on at least one operating parameter.
2. Hob apparatus according to claim 1, characterised in that in the operating mode the control unit (18a-c) is provided to keep a variable of the identification substantially constant.
3. Hob apparatus according to claim 1 or 2, characterised in that in the operating mode the control unit (18a-c) is provided to alter the identifying property depending on an alteration of the operating parameter.
4. Hob apparatus according to one of the preceding claims, characterised in that the identifying property is an intensity of the identification of the heating region (12a-c).
5. Hob apparatus according to one of the preceding claims, characterized in that in the operating mode the control unit (18a-c) is provided to display an operating parameter which alters in at least one direction (22a-c) oriented parallel to a hob plate (20a-c) by means of the identification of the heating region (12a-c).
6. Hob apparatus according to claim 5, characterised in that the direction (22a-c) is a depth direction.
7. Hob apparatus according to claim 5 or 6, characterised in that the operating parameter is a heating parameter.
8. Hob apparatus according to one of the preceding claims, characterised in that the heating region (12a-c) comprises at least one combined heating zone.
9. Hob apparatus according to one of the preceding claims, characterised in that in the operating mode the control unit (18a-c) is provided to identify at least partially an edge of the heating region (12a-c) by means of the identification.
10. Hob apparatus according to one of the preceding claims, characterised in that in the operating mode the control unit (18a-b) is provided to identify at least one position of individual heating units (24a-b) defining the heating region (12a-b) by means of the identification.
11. Hob apparatus according to one of the preceding claims, characterised in that in the operating mode the control unit (18a-c) is provided to display at least one temperature of a heating zone of the heating region (12a-c) by means of the identification.
12. Hob, in particular an induction hob, having at least one hob apparatus (10a-c) according to one of the preceding claims.
13. Method comprising a hob apparatus (10a-c), in particular according to one of claims 1 to 11, having at least one heating region (12a-c) on which at least one cooking container (14a-c) can be placed for heating purposes, and comprising a dynamic display unit (16a-c) which is provided in at least one operating mode, which is independent of placing and removing the cooking container (14a-c) in and out of the heating region (12a-c), for identifying the heating region (12a-c), wherein in the case of a placed cooking container (14a-c) at least one heating zone for heating the placed cooking container (14a-c) is formed from at least one heating unit (24a-c) which at least partially defines the heating region (12a-c), characterised in that in the operating mode at least one identifying property of the identification of the heating region (12a-c) is selected depending on at least one operating parameter.

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