EP3066393B1 - Cooking hob device - Google Patents

Description

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

A hob device is already known from the prior art, with a hob plate and with an operating unit that has an input unit and a display unit. The operating unit is arranged in a housing component of the hob device. The operating unit is arranged on an underside of the hob plate, specifically in a space spanned by the housing component. The housing component is arranged in an installation position in an opening of a kitchen worktop, which in an installation position supports the hob plate.

The EP 1 188 990 A2 discloses a built-in hob which has a glass ceramic plate, on the edge area of which control electronics are arranged.

The EP 2 381 177 A1 discloses a hob with a hob plate, at the edge area of which a lighting unit is arranged.

The EN 10 2011 088 452 A1 , EP 2 390 578 A1 , EP 1 107 647 A2 , EN 10 2005 002 952 A1 and EP 2 615 376 A1 each disclose hobs with a hob plate, on the edge area of which a display unit is arranged.

The republished publication EP 2 687 493 A2 discloses a hob with a hob plate, at the edge region of which a lighting unit is arranged which emits light in a direction away from the hob plate.

The object of the invention is in particular to provide a generic device with an advantageous construction. The object is achieved according to the invention by the features of patent claim 1, while advantageous embodiments and further 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 a hob plate and with at least one display unit, wherein the at least one display unit, when viewed in a plan view, is arranged in at least one edge region of the hob plate, and with a control unit and with a supply unit for supplying the display unit with electrical energy, wherein the control unit is provided for operating the supply unit, wherein the at least one display unit is provided to emit light in a direction facing away from the working side of the hob plate in at least one operating state, with a carrier unit and with a connecting line.

• sodass von der Anzeigeeinheit emittiertes Licht auf einen Vorsprung des Kochfeldrahmens auftrifft, wobei der Vorsprung des Kochfeldrahmens eine reflektierende Oberfläche aufweist,
• oder sodass von der Anzeigeeinheit emittiertes Licht auf eine Küchenarbeitsplatte auftrifft.

It is proposed that the hob device has at least one hob frame which at least partially frames the hob plate, wherein a frame top of a hob frame is arranged substantially flush with the working side, and wherein the display unit in the assembled state is aligned obliquely relative to the working side of the hob plate,

• so that light emitted by the display unit strikes a projection of the hob frame, the projection of the hob frame having a reflective surface,
• or so that light emitted from the display unit hits a kitchen worktop.

A "cooktop device" is to be understood in particular as at least one part, in particular a subassembly, of a cooktop, in particular an induction cooktop. In particular, the cooktop device can also comprise the entire cooktop, in particular the entire induction cooktop. A "cooktop plate" is to be understood in particular as a plate-shaped element that is intended to support cooking utensils and/or food placed on it in an installation position, in particular to absorb a weight of the cooking utensils and/or food placed on it and to advantageously transfer it to at least one further unit, in particular a kitchen worktop. A "plate-shaped" Element is understood to mean an element whose length and width are significantly greater than its thickness. The length and width of the plate-shaped element are in particular at least 5 times, advantageously at least 10 times, particularly advantageously at least 15 times and preferably at least 20 times as large as the thickness of the plate-shaped element. A "display unit" is to be understood in particular as a unit that is intended to visually output information. The display unit comprises in particular at least one light source and/or at least one display. The display unit is preferably intended to emit electromagnetic radiation, in particular visible light, advantageously additionally infrared radiation and/or ultraviolet radiation, in at least one operating state and/or to display at least one character, in particular at least two characters, advantageously at least three characters and preferably at least four characters, in particular simultaneously, preferably legibly. Furthermore, the display unit is advantageously intended to emit light of different colors and/or wavelengths in at least one operating state. The display can in particular be designed as a segment display, preferably as a matrix display. Various designs of the at least one display unit that appear to be useful to a person skilled in the art are conceivable. For example, the at least one display unit could have at least one light bulb and/or neon tube. It is also conceivable that the at least one display unit has at least one light-emitting diode and/or at least one fluorescent element and/or at least one LCD element, in particular backlit. The at least one display unit advantageously has at least one LED and/or at least one 7-segment display. If the at least one display unit is intended to emit infrared radiation and/or ultraviolet radiation in the at least one operating state, at least one material could be provided which could be integrated, for example, in the hob plate and intended to convert infrared radiation and/or ultraviolet radiation into visible light. "Visible" light is to be understood in particular as electromagnetic radiation in a wavelength range between 380 nm and 780 nm. The phrase "when viewed from above" is to be understood here and below in particular as a view in a direction, in particular a viewing direction, which is perpendicular to a main extension plane of the hob plate and towards the hob plate. A "main extension plane" of an object is to be understood in particular as a plane which is parallel to a largest side surface of a smallest geometric cuboid which just completely encloses the object, and in particular runs through the center of the cuboid. An "edge region" of the hob plate is to be understood in particular as an area which, when the hob plate is viewed from above, starting from an edge of the hob plate, extends parallel to a main extension plane of the hob plate over a distance of a maximum of 50 mm, in particular a maximum of 40 mm, advantageously a maximum of 30 mm, particularly advantageously a maximum of 25 mm and preferably a maximum of 20 mm. When the hob plate is viewed from above, the at least one edge region, starting from the edge of the hob plate, extends in each direction parallel to the main extension plane over a maximum of 10%, advantageously over a maximum of 8%, particularly advantageously over a maximum of 7% and preferably over a maximum of 6% of an extension of the hob plate in the respective direction. When the hob plate is viewed from above, the at least one edge region extends parallel to the main extension plane, starting from the edge of the hob plate, in particular over a distance of at least 5 mm, advantageously at least 8 mm and preferably at least 10 mm. When the hob plate is viewed from above, the at least one edge region extends from the edge of the hob plate in each direction parallel to the main extension plane over at least 0.5%, advantageously at least 1% and particularly advantageously at least 2% of an extension of the hob plate in the respective direction. An "edge" of the hob plate is to be understood in particular as a lateral limitation of the hob plate with respect to the main extension plane. "Provided" is to be understood in particular as specially programmed, designed and/or equipped. The fact that an object is provided for a specific function is to be understood in particular as the object fulfilling and/or carrying out this specific function in at least one application and/or operating state.

The design according to the invention makes it possible to provide a hob device with an advantageous construction. By arranging the at least one display unit in the at least one edge region, a low temperature influence on the at least one display unit and thus advantageously a gentle arrangement of the at least one display unit can be achieved. In particular, low costs can be achieved as a result, in particular by using components with low temperature requirements. In addition, this can a long-lasting and/or reliable and/or functional design of the components can be achieved. Furthermore, a large cooking surface and/or a small space requirement for an operating unit can be achieved, in particular since components and/or elements can be arranged in at least one edge region of the hob plate. If the at least one display unit has a display unit for displaying a status of at least one heating element, a high level of operational reliability and/or a high level of comfort for an operator can advantageously be achieved. A visually appealing hob device with an appealing aesthetic design can be achieved particularly advantageously.

It is further proposed that the hob device, in particular in addition to the hob plate, comprises at least one carrier unit which is arranged in the at least one edge region and is provided in an installation position to support the at least one display unit. The phrase that the at least one carrier unit is provided in an installation position to "support" the at least one display unit is to be understood in particular to mean that the at least one carrier unit is provided to absorb a weight force of the at least one display unit in the installation position and advantageously to transfer it to at least one further unit, in particular to the hob plate and/or to a kitchen worktop. The at least one carrier unit is preferably provided to at least partially hold, in particular to fix, the at least one display unit in at least one position relative to the hob plate in the installation position. The at least one carrier unit can in particular be designed as a circuit board, in particular as a printed circuit board. This makes it possible in particular to ensure that the at least one display unit can be securely stored. This advantageously makes it possible to achieve a functional and/or long-lasting display unit.

For example, the at least one display unit could be arranged in the installation position above a surface of the at least one carrier unit. Advantageously, however, the at least one carrier unit is provided to at least partially accommodate the at least one display unit, wherein the at least one display unit is at least partially arranged within the at least one carrier unit. Preferably, the at least one carrier unit surrounds the at least one display unit in at least one plane at least partially, in particular over an angular range of at least 180°, advantageously at least 270°, particularly advantageously at least 300° and preferably at least 340°. The at least one carrier unit is designed differently from the hob plate. This makes it possible to achieve a space-saving design.

It is further proposed that in at least one operating state, light emitted by the at least one display unit is visible, in particular when viewed in a plan view from a working side of the hob plate. The at least one display unit and in particular the at least one carrier unit are advantageously arranged on a side of the hob plate facing away from the working side of the hob plate, in particular an underside. A "working side" of the hob plate is to be understood in particular as a side of the hob plate that is visible to an operator in the installed position, in particular a surface, which is aligned in particular parallel to the main extension plane. The hob plate is advantageously designed to be at least partially transparent, in particular for at least one wavelength range of the light emitted by the at least one display unit. An "at least partially transparent" element is to be understood in particular as an element that is intended to transmit, in particular to let through, a proportion of at least 50%, advantageously of at least 70% and preferably of at least 90% of an amplitude of electromagnetic radiation in at least one wavelength range, in particular of the light emitted by the at least one display unit. This makes it possible to achieve a high level of operational reliability and/or comfort for the operator.

The at least one display unit is intended to emit visible light in particular in a direction facing away from the working side of the hob plate in at least one operating state, whereby in particular a high level of flexibility and/or a large number of possible arrangements can be achieved. In addition, a high variety of design options can be achieved.

In addition, it is proposed that the hob plate is subjected to at least one volume and/or surface treatment at least in the at least one edge region. In particular, the hob plate has a base body which is subjected to the at least one volume and/or surface treatment. It is conceivable that the Hob plate, in particular after the at least one volume and/or surface treatment, has a coating arranged in at least one partial area of a surface of the base body. Alternatively or additionally, the surface of the base body could have a polish and/or a particularly artificially roughened surface structure, in particular a surface roughness, in at least one partial area. Furthermore, at least one partial area of the base body could have geometric patterns and/or figures, in particular in two-dimensional and advantageously in three-dimensional form. Preferably, the at least one partial area that is subjected to the at least one volume and/or surface treatment differs from neighboring partial areas in a way that is visible to an operator. The at least one volume and/or surface treatment can advantageously comprise a laser treatment, in particular a laser ablation and/or a laser engraving, and/or an acid treatment and/or a treatment by means of sandblasting and/or a coating process, such as PVD and/or printing, for example inkjet printing. Alternatively, other volume and/or surface treatments that appear to be useful to a person skilled in the art are conceivable. This makes it possible to achieve a long-lasting hob plate and/or a high level of comfort for an operator.

According to the invention, the hob device comprises at least one hob frame which at least partially frames, in particular surrounds, the hob plate, in particular when viewed from above, alternatively or additionally when viewed in a sectional view. The phrase that the at least one hob frame "at least partially" frames the hob plate is to be understood in particular to mean that the at least one hob frame frames at least a partial area of the hob plate. The at least one hob frame could in particular be designed in several parts. Advantageously, however, the at least one hob frame is designed in one piece, with the at least one hob frame framing the hob plate to a proportion of at least 80%, advantageously at least 90% and preferably at least 95% of a circumference of the hob plate. This can in particular prevent damage to the hob plate, whereby a high level of functionality and/or durability of the hob plate can be achieved.

The at least one hob frame advantageously forms at least one receiving area, which is designed differently in particular from a receiving area for the hob plate and which is advantageously provided at least for at least partial reception of the at least one display unit. The at least one display unit is arranged at least partially, in particular to a mass and/or volume proportion of at least 80%, advantageously at least 90% and preferably at least 95%, within the at least one hob frame. The phrase that the at least one display unit is arranged "inside" the at least one hob frame is to be understood in particular to mean that the at least one hob frame forms the at least one receiving area in which the at least one display unit is arranged, wherein the at least one hob frame surrounds the at least one display unit in at least one plane over an angular range of at least 180°, advantageously at least 270° and preferably at least 330°. This makes it possible in particular to ensure secure storage of the at least one display unit.

For example, the at least one hob frame could be opaque or at least partially translucent. Preferably, however, the at least one hob frame is at least partially transparent, in particular for at least one wavelength range of visible light, alternatively or additionally for infrared radiation and/or ultraviolet radiation, whereby in particular a flexible and/or protected arrangement of the at least one display unit can be achieved.

It is further proposed that the at least one hob frame has at least one light guide. A "light guide" is to be understood in particular as an element that is at least partially transparent and is advantageously intended to redirect and/or guide and/or reflect electromagnetic radiation, in particular visible light, in particular by means of total reflection. The phrase that the at least one hob frame "has" at least one light guide is to be understood in particular as meaning that the at least one hob frame comprises the at least one light guide and/or that the at least one hob frame itself forms the at least one light guide. This makes it possible in particular to avoid a loss of electromagnetic radiation and advantageously to achieve a flexible design.

It is further proposed that the hob device comprises at least one seal which is intended to hold the at least one display unit in a position relative to the hob plate, in particular in the installed position. The at least one seal is in particular additionally intended to hold the hob plate in a position relative to the kitchen worktop in the installed position. Furthermore, the at least one seal is in particular intended to seal at least one gap arranged between the kitchen worktop and the hob plate and advantageously to at least substantially prevent the penetration of dirt into and/or through the at least one gap. In particular, the at least one seal is further intended to at least thermally couple the at least one display unit and/or the hob plate to the kitchen worktop in an installed state. This makes it possible to achieve low costs and/or a compact hob device. Furthermore, contamination of the hob device can advantageously be avoided.

Fig. 1

ein Kochfeld mit einer nicht erfindungsgemäßen Kochfeldvorrichtung in einer schematischen Draufsicht,

Fig. 2

das Kochfeld mit der Kochfeldvorrichtung aus Fig. 1 in einer schematischen Schnittdarstellung,

Fig. 3A

eine Trägereinheit der Kochfeldvorrichtung aus Fig. 1 in einer schematischen Seitenansicht,

Fig. 3B

die Trägereinheit der Kochfeldvorrichtung aus Fig. 1 in einer schematischen Draufsicht,

Fig. 4

ein Kochfeld mit einer alternativen nicht erfindungsgemäßen Kochfeldvorrichtung in einer schematischen Schnittdarstellung,

Fig. 5

ein Kochfeld mit einer alternativen nicht erfindungsgemäßen Kochfeldvorrichtung in einer schematischen Schnittdarstellung,

Fig. 6

ein Kochfeld mit einer alternativen nicht erfindungsgemäßen Kochfeldvorrichtung in einer schematischen Schnittdarstellung,

Fig. 7

ein Kochfeld mit einer alternativen nicht erfindungsgemäßen Kochfeldvorrichtung in einer schematischen Schnittdarstellung,

Fig. 8

ein Kochfeld mit einer alternativen nicht erfindungsgemäßen Kochfeldvorrichtung in einer schematischen Schnittdarstellung,

Fig. 9

ein Kochfeld mit einer alternativen nicht erfindungsgemäßen Kochfeldvorrichtung in einer schematischen Schnittdarstellung,

Fig. 10

ein Kochfeld mit einer alternativen nicht erfindungsgemäßen Kochfeldvorrichtung in einer schematischen Schnittdarstellung,

Fig. 11

ein Kochfeld mit einer nicht erfindungsgemäßen Kochfeldvorrichtung in einer schematischen Schnittdarstellung,

Fig. 12

ein Kochfeld mit einer erfindungsgemäßen Kochfeldvorrichtung in einer schematischen Schnittdarstellung,

Fig. 13

ein Kochfeld mit einer alternativen erfindungsgemäßen Kochfeldvorrichtung in einer schematischen Schnittdarstellung, und

Fig. 14

ein Kochfeld mit einer alternativen nicht erfindungsgemäßen Kochfeldvorrichtung in einer schematischen Schnittdarstellung

Further advantages are evident from the following drawing description. They show:

Fig.1

a hob with a hob device not according to the invention in a schematic plan view,

Fig.2

the hob with the hob device Fig.1 in a schematic sectional view,

Fig. 3A

a carrier unit of the hob device made of Fig.1 in a schematic side view,

Fig. 3B

the carrier unit of the hob device Fig.1 in a schematic plan view,

Fig.4

a hob with an alternative hob device not according to the invention in a schematic sectional view,

Fig.5

a hob with an alternative hob device not according to the invention in a schematic sectional view,

Fig.6

a hob with an alternative hob device not according to the invention in a schematic sectional view,

Fig.7

a hob with an alternative hob device not according to the invention in a schematic sectional view,

Fig.8

a hob with an alternative hob device not according to the invention in a schematic sectional view,

Fig.9

a hob with an alternative hob device not according to the invention in a schematic sectional view,

Fig.10

a hob with an alternative hob device not according to the invention in a schematic sectional view,

Fig. 11

a hob with a hob device not according to the invention in a schematic sectional view,

Fig. 12

a hob with a hob device according to the invention in a schematic sectional view,

Fig. 13

a hob with an alternative hob device according to the invention in a schematic sectional view, and

Fig. 14

a hob with an alternative hob device not according to the invention in a schematic sectional view

Fig.1 shows a hob 28a, which is designed as an induction hob, with a hob device 10a, which is designed as an induction hob device. As an alternative to a design as an induction hob, the hob could be designed as a gas hob and/or as a radiation hob and/or as a heating resistance hob. The hob device 10a comprises a hob plate 12a, which forms a cooking surface. The hob plate 12a is intended for placing cooking utensils. To heat up cooking utensils that have been placed there, the hob device 10a comprises several heating elements 30a. In the present embodiment, the hob device 10a comprises five heating elements 30a. For the sake of clarity, the number of components present in multiples is omitted in the Fig. 1 to 13 only one of them is provided with a reference symbol. The heating elements 30a, which in this case are designed as induction heating elements, form independent heating zones. In a In an installed state, the hob device 10a has an operating unit 32a in the area facing an operator, which is provided for inputting and/or selecting operating parameters, for example a heating power and/or a heating power density and/or a heating zone. In addition, the operating unit 32a is provided for outputting a value of an operating parameter to an operator. The operating unit 32a is arranged in an edge region 16a of the hob plate 12a.

The hob device 10a comprises a plurality of display units 14a. In the present exemplary embodiment, the hob device 10a comprises five display units 14a, each of which is assigned to one of the heating elements 30a. When viewed from above, some of the display units 14a, in particular four of the display units 14a, are arranged in the edge region 16a of the hob plate 12a. A number of display units 14a and a number of heating elements 30a are essentially the same. Each display unit 14a has a display 34a and a plurality of light sources 36a. The display 34a is designed to display digits. The digits displayed by the display 34a represent a heating power level of the heating element 30a in an operating state of the heating element 30a to which the display unit 14a is assigned. Each display unit 14a is provided to stimulate a different number of light sources 36a to emit light depending on a heating power level of the heating element 30a to which the display unit 14a is assigned. In the operating state, each display unit 14a stimulates a number of light sources 36a corresponding to the set heating power level to emit light (see. Fig.1 ). In the present embodiment, the displays 34a are designed as 7-segment displays and the light sources 36a as LEDs. Alternatively, other designs and/or combinations of displays and/or light sources that appear sensible to a person skilled in the art are conceivable.

In an assembled state, the display units 14a are arranged on a side facing away from a working side 20a of the hob plate 12a, namely on an underside of the hob plate 12a. In the operating state, light emitted by the display units 14a is visible from the working side 20a of the hob plate 12a. The display units 14a emit electromagnetic radiation in the direction of the working side 20a. In the operating state, light leaves the display units 14a emitted light the hob plate 12a on the working side 20a of the hob plate 12a. The hob plate 12a is partially transparent for visible light, in particular for the light emitted by the display units 14a. The hob plate 12a has a light guide. The hob plate 12a itself forms the light guide.

The hob device 10a comprises a plurality of support units 18a, which are arranged in the edge region 16a and are provided in an installation position for supporting the display units 14a (cf. Fig.2 , 3A and 3B ). The hob device 10a comprises a carrier unit 18a for each of the display units 14a. The carrier units 18a are arranged in the installed position above a kitchen worktop 38a. In the installed position, the carrier units 18a are arranged in direct contact with the kitchen worktop 38a. In the installed position, the display units 14a are arranged above the carrier units 18a. For example, the display units could be arranged on a surface of the carrier units. Advantageously, however, the carrier units 18a have recesses in which the display units 14a are arranged in the assembled state. Each carrier unit 18a partially surrounds the display unit 14a in one plane.

Various designs of the carrier units are conceivable that appear sensible to a person skilled in the art. The carrier units could, for example, be designed in the form of plates, in particular made of plastic and/or ceramic and/or wood. However, the carrier units 18a are advantageously designed as electronic circuit boards. In the operating state, the carrier units 18a absorb electrical energy to supply the display units 14a with electrical energy.

To supply the display units 14a with electrical energy, the hob device 10a comprises a control unit 40a and a supply unit. The control unit 40a is provided for operating the supply unit. In addition, the control unit 40a is provided for carrying out actions and/or changing settings depending on operating parameters entered using the operating unit 32a. The control unit 40a and the supply unit are formed in one piece. The control unit 40a is arranged outside the edge region 16a. The control unit 40a is arranged in a housing component 44a of the hob device 10a. The housing component 44a forms an outer housing together with the hob plate 12a. The hob device 10a comprises a plurality of connecting lines 42a which transmit electrical energy and information between the control unit 40a and the edge region 16a. The connecting lines 42a transmit electrical energy and information between the supply unit and the carrier units 18a.

The hob device 10a comprises a seal 26a, which is arranged in the edge region 16a. The seal 26a is arranged between the kitchen worktop 38a and the hob plate 12a. The seal 26a prevents moisture from penetrating the edge region 16a. In the assembled state, the seal 26a is arranged closer to a lateral boundary of the hob plate 12a than the display unit 14a. In the assembled state, the seal 26a is intended to protect the display unit 14a from contamination. When viewed from above, the seal 26a extends essentially over the entire circumference of the hob plate 12a. In alternative embodiments, multi-part seals are conceivable, whereby individual parts of the seal can be connected to one another or arranged at a distance from one another.

As an alternative to one carrier unit per display unit, a different number and/or different designs of the carrier unit are conceivable. In addition, a design avoiding a carrier unit is conceivable, whereby the display units could be arranged in the installed position directly above the kitchen worktop. In this case, each display unit would be supplied directly by the control unit via the supply unit, in particular a separate supply line would be provided for each display unit. It is also conceivable that the carrier unit and the control unit are designed as a single piece, whereby the carrier unit designed as a control unit could be provided for controlling and supporting the display units.

In Fig. 4 to 13 Further embodiments of the invention are shown. The following descriptions are essentially limited to the differences between the embodiments, whereby with regard to the same components, features and functions, reference is made to the description of the embodiment of the Fig. 1, 2 , 3A and 3B To distinguish the embodiments, the letter a in the reference numerals of the embodiment in the Fig. 1, 2 , 3A and 3B by the letters b to k in the reference numerals of the embodiments of the Fig. 4 to 13 With regard to identically designated components, in particular with regard to components with the same reference numerals, reference can also be made to the drawings and/or the description of the embodiment of the Fig. 1, 2 , 3A and 3B to get expelled.

Fig.4 shows a hob 28b with a hob device 10b. The hob device 10b comprises a hob plate 12b, which forms a cooking surface. In addition, the hob device 10b comprises a plurality of display units 14b, which, when viewed in a plan view, are arranged in an edge region 16b of the hob plate 12b. In the edge region 16b, the hob plate 12b is subjected to a surface treatment. In addition, the hob plate 12b is subjected to the surface treatment over a large part of a working side 20b of the hob plate 12b. The hob plate 12b has a base body 46b, which forms a large part of the hob plate 12b. In an assembled state, the hob plate 12b has a coating 48b, which is arranged on the base body 46b. The coating 48b extends essentially over an entire part of a surface of the base body 46b, which is visible to an operator in an installed position. The coating 48b extends essentially over the entire working side 20b and over edge sides 52b of the hob plate 12b. An underside of the base body 46b is free of the coating 48b. In the edge region 16b, the coating 48b has interruptions 50b. In an operating state, light emitted by the display units 14b is visible from the working side 20b of the hob plate 12b through the interruptions 50b of the opaque coating 48b. Light emitted by the display units 14b leaves the hob plate 12b in a direction that is essentially perpendicular to the working side 20b. When viewed from above, interruptions 50b arranged on the working side 20b are arranged above the display units 14b. The coating 48b has interruptions 50b on the edge sides 52b that run essentially perpendicular to the working side 20b. The interruptions 50b of the edge sides 52b are arranged in an area of the display units 14b. In an operating state, light emitted by the display units 14b is visible from the working side 20b of the hob plate 12b through the interruptions 50b on the edge sides 52b and the working side 20b. Light emitted by the display units 14b leaves the hob plate 12b in a direction that is essentially parallel to the working side 20b. In the present embodiment, a surface of the The hob plate 12b is subjected to a further surface treatment in the edge region 16b, specifically in an area of the interruptions 50b. The hob plate 12b has an artificially produced surface roughness 60b in the edge region 16b, which is produced in particular by means of laser treatment.

In an alternative embodiment of the Fig.4 a coating 48c on a working side 20c of a hob plate 12c has a plurality of interruptions 50c which are arranged adjacent to one another (cf. Fig.5 ). The interruptions could be of the same size. However, the interruptions 50c are of different sizes. In this case, a largest of the interruptions 50c is surrounded by several smaller interruptions 50c. The interruptions 50c are arranged at a distance from one another in directions that are aligned essentially parallel to the working side 20c of the hob plate 12c. Alternatively, the interruptions could only be arranged at a distance from one another in one of the directions that are aligned essentially parallel to the working side of the hob plate. It is also conceivable that the interruptions form patterns, geometric arrangements and/or symbols. A surface of the hob plate 12c is subjected to a further surface treatment in the edge region 16c, specifically in an area of the interruptions 50c. The hob plate 12c has an artificially created surface roughness 60c in the edge region 16c. Alternatively or additionally, the hob plate could have a polish in the edge region, which could in particular be produced by means of chemical and/or mechanical treatment of the surface. Furthermore, a partially transparent or translucent coating is conceivable, which extends, in particular while avoiding interruptions, over essentially the entire working side of the hob plate and over the edge sides of the hob plate. Such a coating could additionally be subjected to a surface treatment and in particular have a surface roughness and/or polish. Alternatively, other combinations that appear sensible to a person skilled in the art are conceivable. The hob plate 12c has recesses 54c in which display units 14c are arranged. The recesses 54c are designed as openings in an underside of the hob plate 12c. The hob device 10c comprises a seal 26c, which holds the display units 14c in a position relative to the hob plate 12c. The seal 26c closes the recesses 54c in one of the working sides 20c. away from the direction. In an assembled state, the seal 26c holds the display units 14c in the recesses 54c.

Fig.6 shows an alternative hob 28d with a hob device 10d, which has a hob plate 12d. The hob plate 12d is subjected to a volume treatment in an edge region 16d of the hob plate 12d. The hob plate 12d has engravings 56d, which are introduced into a base body 46d. The engravings 56d are produced by means of laser processing. Various designs of the engraving are conceivable, which appear to be useful to a person skilled in the art. For example, the engraving could have various patterns, figures, letters and/or numbers.

Fig.7 shows an alternative hob 28e with a hob device 10e. The hob device 10e comprises a hob frame 22e which partially frames a hob plate 12e. The hob frame 22e is formed in one piece. Alternatively, the hob frame could be formed in several parts. When viewed in a cross-sectional plane, the hob frame 22e has a substantially L-shaped configuration. The hob frame 22e extends over a large part of edge sides 52e and over a small part of a side facing away from a working side 20e of the hob plate 12e, namely an underside, of the hob plate 12e. The hob device 10e comprises a seal 26e which holds the hob frame 22e in a position relative to the hob plate 12e. In an assembled state, the hob frame 22e ends, namely with a frame top, below a plane spanned by the working side 20e. This can prevent damage to the hob frame 22e. Alternatively, a flush arrangement of the working side and a surface of the hob frame is conceivable. The frame top of the hob frame 22e, which is aligned essentially parallel to the working side 20e, is subjected to a surface treatment. In addition, frame edge sides of the hob frame 22e, which are aligned essentially perpendicular to the working side 20e, are subjected to a surface treatment. The hob frame 22e has a surface roughness 62e on the frame top. The hob frame 22e forms several receiving areas 58e, each of which is intended to receive a display unit 14e. The display units 14e are partially arranged within the hob frame 22e. The receiving areas 58e are designed to be insignificantly larger than carrier units 18e, which are in a Installation position for supporting the display units 14e. The carrier units 18e are fastened in the receiving areas 58e in a form-fitting and/or force-fitting manner. In addition, the carrier units 18e can be fastened in the receiving areas 58e by gluing, in particular with lateral boundaries of the receiving areas 58e. This could be dispensed with in alternative embodiments. Alternatively or additionally, the carrier units could be sealed in the receiving areas. Other fastening options that appear sensible to a person skilled in the art are also conceivable. The display units 14e, which are arranged on a side facing away from the working side 20e, namely on the underside, of the hob plate 12e, emit light in a direction facing the working side 20e. The hob frame 22e is partially transparent. In an operating state, the hob frame 22e guides light emitted by the display units 14e from the underside of the hob plate 12e around the hob plate 12e. For this purpose, the hob frame 22e has a light guide 24e. In the present exemplary embodiment, the hob frame 22e and the light guide 24e are formed in one piece. The hob frame 22e forms the light guide 24e. In addition, the light guide 24e is formed in one piece with a frame component 66e of the hob frame 22e. The hob frame 22e directs light emitted by the display units 14e through the hob frame 22e by means of total reflection. As a result, in the operating state, light emitted by the display units 14e is visible from the working side 20e of the hob plate 12e. Light emitted by the display units 14e leaves the hob frame 22e at the top of the frame. Light emitted by the display units 14e is scattered by the surface roughness 62e of the hob frame 22e.

In an alternative embodiment of the Fig.7 a hob frame 22f has a frame top that is aligned obliquely relative to a working side 20f of a hob plate 12f (cf. Fig.8 ). In an operating state, light emitted by display units 14f leaves the hob frame 22f at the top of the frame. In the operating state, light emitted by the display units 14e leaves the hob frame 22f at an angle relative to the work side 20f. In an assembled state, support units 18f are arranged within receiving areas 58f of the hob frame 22f. A shape of the receiving areas 58f is dependent on a shape of the support units 18f and the support units 18f. supported display units 14f. The display units 14f are arranged in the installed position above the support units 18f, specifically above a surface of the support units 18f. The receiving areas 58f have a substantially step-like shape when viewed in a cross-sectional plane. The receiving areas 58f are larger than the support units 18f. To hold the support units 18f in the installed position in the receiving areas 58f, the hob device 10f comprises a seal 26f. In addition, the seal 26f holds the hob frame 22f in a position relative to the hob plate 12f in the installed position. The hob frame 22f forms guide channels 64f which are provided for the passage of connecting lines 42f through the hob frame 22f. The guide channels 64f open into the receiving areas 58f. Through the guide channels 64f, a connection can be established between an edge region 16f and a control unit 40f.

Fig.9 shows an alternative hob 28g with a hob device 10g. The hob device 10g comprises a hob frame 22g, which partially frames a hob plate 12g. The hob frame 22g surrounds the hob plate 12g in a direction that is essentially perpendicular to a working side 20g of the hob plate 12g. The hob frame 22g extends partially over the working side 20g and partially over an underside of the hob plate 12g facing away from the working side 20g. In addition, the hob frame 22g extends over edge sides 52g of the hob plate 12g. The hob frame 22g, which is partially transparent, has a light guide 24g. The hob frame 22g has a frame component 66g, which forms a lateral boundary of the hob frame 22g. The frame component 66g is opaque. Alternatively, a frame component that is essentially transparent is conceivable. The light guide 24g and display units 14g are partially arranged within the frame component 66g. The frame component 66g has recesses 68g through which light emitted by display units 14g in an operating state exits from the hob frame 22g. The recesses 68g are arranged on the frame edge sides and on a frame top. In an operating state, light emitted by the display units 14g leaves the hob frame 22g in directions that are essentially perpendicular and essentially parallel to the working side 20g. The hob frame 22g is subjected to a surface treatment. In this case, the light guide 24g of the Surface treatment. The light guide 24g has a surface roughness 62g in several places. Alternatively, it is conceivable that a partially transparent frame component is subjected to volume and/or surface treatment. The hob frame 22g, together with the hob plate 12g, forms guide channels 64g, which are intended for the passage of connecting lines 42g.

Fig.10 shows an alternative hob 28h with a hob device 10h. The hob device 10h comprises a hob frame 22h, which partially frames a hob plate 12h. In an installed position, the hob frame 22h holds the hob plate 12h in an opening of a kitchen worktop 38h. The hob frame 22h has a curved shape. Display units 14h are arranged below the hob frame 22h. The hob frame 22h has recesses 68h through which light emitted by the display units 14h exits the hob frame 22h in an operating state. Light emitted by the display units 14h passes through the hob frame 22h in the operating state through the recesses 68h and is visible from a working side 20h of the hob plate 12h. The hob device 10h comprises a seal 26h that holds the display units 14h in a position relative to the hob plate 12h. The display units 14h are partially surrounded by the seal 26h in an assembled state. Each display unit 14h is surrounded by the seal 26h over an angular range of at least 180° with respect to a center of gravity of the display unit 14h.

In a further alternative embodiment, a display unit 14i emits light in a direction substantially perpendicular to a working side 20i (cf. Fig. 11 ). The display unit 14i, which is arranged within a hob frame 22i, emits light in the direction of a hob plate 12i. Light emitted by the display unit 14i enters the hob plate 12i. The hob plate 12i is partially transparent. The hob plate 12i has a light guide. The hob plate 12i itself forms the light guide. In an edge region 16i, the hob plate 12i is subjected to a surface treatment and a further surface treatment. The hob plate 12i has a coating 48i over essentially the entire working side 20i. The coating 48i is opaque. In the edge region 16i, the coating 48i has an interruption 50i. Light emitted by the display unit 14i leaves the hob plate 12i through the interruption 50i and is visible from the working side 20i of the hob plate 12i. A design of the coating 48i, in particular a design and/or arrangement of the interruption 50i, defines a visibility of the light emitted by the display unit 14i from the working side 20i of the hob plate 12i. In the area of the interruption 50i, the hob plate 12i has a polish. The hob frame 22i, within which the display unit 14i is partially arranged, partially surrounds the hob plate 12i when viewed in a cross-sectional plane. The hob frame 22i partially surrounds a base body 46i and the coating 48i of the hob plate 12i. The display unit 14i is arranged in a vertical direction in an installation position. When viewed in a cross-sectional plane, a longitudinal extension of a carrier unit 18i is aligned essentially perpendicular to the working side 20i. In an operating state, the display unit 14i is supplied with electrical energy by means of a connecting line 42i guided through a guide channel 64i. The connecting line 42i is guided through a seal 26i. The connecting line 42i is cast into the seal 26i.

Fig. 12 shows an alternative hob 28j with a hob device 10j. A frame top of a hob frame 22i is arranged substantially flush with a work side 20j. In an assembled state, a display unit 14j is partially arranged within the hob frame 22j. In the assembled state, the display unit 14j is aligned obliquely relative to the work side 20j. In the assembled state, the display unit 14j is arranged in a materially bonded and/or positively bonded and/or non-positively bonded manner in a receiving area 58j of the hob frame 22j. In an operating state, the display unit 14j emits light in a direction facing away from the work side 20j of the hob plate 12j. In this case, light emitted by the display unit 14j hits a kitchen worktop 38j. The kitchen worktop 38j has a reflective surface and reflects light emitted by the display unit 14j in the direction of the work side 20j. The hob frame 22j forms a guide channel 64j, which is provided for the passage of connecting lines 42j through the hob frame 22j. The guide channel 64j of the hob frame 22j opens into a guide channel 70j of the hob plate 12j. The hob plate 12j forms the guide channel 64j, which is provided for a The connecting lines 42j are provided for passing through the hob plate 12j.

Fig. 13 shows an alternative embodiment of the Fig. 12 . In an assembled state, a display unit 14k is arranged in a materially bonded and/or positively bonded and/or force-locked manner in a receiving area 58k of a hob frame 22k. In an operating state, the display unit 14k emits light in a direction facing away from the working side 20k of a hob plate 12k. Light emitted by the display unit 14k strikes a projection 72k of the hob frame 22k. The projection 72k of the hob frame 22k has a reflective surface and reflects light emitted by the display unit 14k in the direction of the working side 20k. As a result, light emitted by the display unit 14k is visible from a working side 20k of the hob plate 12k. Various designs of the projection 72k that appear sensible to a person skilled in the art are conceivable. For example, the projection could be subjected to a surface treatment. In this case, the projection could have a coating and/or a polish. For example, the projection could have a substantially white color. This would make light striking the projection particularly visible. The hob plate 12k is subjected to a surface treatment in an edge region 16k. The hob plate 12k is subjected to the surface treatment on a side facing away from the work side 20k, namely an underside of the hob plate 12k. The hob plate 12k has an electrically conductive coating 48k in the edge region 16k. The coating 48k is electrically connected to a connecting line 42k at two ends arranged at a distance from one another. At a first end of the coating 48k, the coating 48k is electrically connected to a supply unit of a control unit 40k by means of the connecting line 42k. At the second end of the coating 48k, the coating 48k is electrically connected to a carrier unit 18k, which carries the display unit 14k, by means of the connecting line 42k. This enables an electrical supply to the display unit 14k in an operating state.

Fig. 14 shows an alternative hob 28l with a hob device 101, which has a hob plate 121. The seal 26l is designed as a translucent or transparent silicone, into which the carrier unit 18l and the display unit 14l are embedded. In this way, the seal 261 can fulfill the function of cooling the display unit and the support unit as well as maintaining the tightness of the device. The seal 26l can be an elastomer in the form of an opaque silicone, in which case it only surrounds the support unit 18l, with the free upper side remaining in contact with the plate 121. If the seal 26l is translucent or transparent, it can surround the space between the display unit 14l and the plate 12l. The seal 26l serves as a light guide by eliminating the air which acts as an interface between the light point of the display unit 14l and the plate 12l, thereby improving the light efficiency.

Any combination of the embodiments that appears to be reasonable to a person skilled in the art is conceivable. In addition, as an alternative or in addition to a design using a guide channel in a component, in particular in the hob frame and/or in the hob plate, a connecting line could be guided through the component, for example by casting the connecting line into the component. Alternatively or in addition to a supply unit of a control unit, the display unit could be connected to a network connection of a household network by means of a connecting line. In this case, the carrier unit could be provided for controlling and/or regulating the display unit. Furthermore, the use of accumulators and/or batteries and/or fuel cells is conceivable as an alternative or in addition. Alternatively or in addition, energy could be transmitted without a connection, in particular by means of induction.

A hob frame could be made up of several parts. The hob frame could only frame partial areas of a hob plate, for example two opposite edges or a partial area that adjoins, in particular borders, a heating zone. A connection between the hob frame and the hob plate can be made in various ways that appear sensible to a person skilled in the art. For example, the hob frame and the hob plate could be connected by means of an adhesive. Alternatively or additionally, a positive and/or non-positive connection is conceivable. Furthermore, alternatively or additionally, the use of additional components to create a connection between the hob frame and the hob plate is conceivable, wherein the additional components that could be integrated, for example, in the hob plate and/or the hob frame.

Reference symbols

10

Hob device

12

Hob plate

14

Display unit

16

Edge area

18

Carrier unit

20

Work page

22

Hob frame

24

Light guide

26

poetry

28

Hob

30

Heating element

32

Control unit

34

Display

36

Light source

38

Kitchen worktop

40

Control unit

42

Connecting line

44

Housing component

46

Base body

48

Coating

50

Interruption

52

Edge page

54

Recess

56

engraving

58

Recording area

60

Surface roughness

62

Surface roughness

64

Guide channel

66

Frame component

68

Recess

70

Guide channel

72

head Start

Claims (5)

1. Hob device, in particular induction hob device, having a hob plate (12j-k), at least one display unit (14j-k) wherein the at least one display unit (14j-k) is arranged in at least one edge region (16j-k) of the hob plate (12j-k) when viewed from above, a control unit (40j-k) and a supply unit for supplying the display unit (14j-k) with electrical energy, wherein the control unit (40j-k) is provided for operating the supply unit, characterised in that the hob device has a carrier unit (18j-k) and a connection line (42j-k), wherein the carrier unit (18j-k), in an installed position, carries the at least one display unit (14j-k), the at least one display unit (14j-k) is provided, in at least one operating state, to emit light in a direction facing away from the working side (20j-k) of the hob plate (12j-k), the hob device furthermore has hob frame (22j-k) which at least partially surrounds the hob plate (12j-k), wherein a frame top side of a hob frame (22j-k) is arranged so as to be essentially flush with the working side (20j-k), and wherein, in the assembled state, the display unit (14j-k) is aligned obliquely relative to the working side (20j-k) of the hob plate (12j-k), such that light emitted by the display unit (14k) strikes a projection (72k) of the hob frame (22k), wherein the projection (72k) of the hob frame (22k) has a reflective surface, or such that light emitted by the display unit (14j) strikes a kitchen worktop (38j).
2. Hob device according to claim 1, characterised in that the carrier unit (18j-k) is arranged in the at least one edge region (16j-k).
3. Hob device according to claim 2, characterised in that the at least one carrier unit (18j-k) at least partially surrounds the at least one display unit (14j-k) in at least one plane.
4. Hob device according to claim 1, characterised in that the at least one display unit (14j-k) is arranged at least partially within the at least one hob frame (22j-k).
5. Hob device according to claim 1, characterised in that in the embodiment in which light emitted by the display unit (14k) strikes the projection (72k) of the hob frame (22k), the hob plate (12k) has in the edge region (16k) an electrically conductive coating (48k) which is electrically connected to the connection cable (42k) in each case at two ends arranged remotely from one another, wherein at a first end of the coating (48k) the coating (48k) is electrically connected to the supply unit by means of the connection cable (42k), wherein at a second end of the coating (48k) the coating (48k) is electrically connected to the carrier unit (18k) by means of the connection cable (42k).

Images