EP2757320B1 - Hotplate device with multiple coatings - Google Patents

Description

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

It is known to coat hob plates at its top.

From the JP 2007 292384 A There is already known a cooktop panel apparatus having a cooktop unit made of heat-resistant glass or a ceramic and having a coating unit having a first sub-coating disposed on at least a part of an upper surface of the cooktop unit and having a second sub-coating at least on a part thereof an edge side of the cooking plate unit is arranged and consists of a non-metallic material, such as a silicone or a natural resin.

The US 3,927,658 A discloses a cooktop panel apparatus having a cooktop panel unit of metal and a porcelain coating unit having a first sub-coating disposed on at least a portion of an upper surface of the cooktop panel unit and having a second sub-coating disposed on at least a portion of an edge side of the cooktop panel unit is.

The JP 2003 051374 A FIG. 5 shows a cooktop panel apparatus having a cooktop panel unit and a fluorochemical anti-fouling coating having a sub-coating disposed on at least a portion of an upper surface of the cooktop panel unit.

The DE 196 49 767 A1 shows a hob plate device with a hob plate unit and with a permanently elastic edge protection.

From the WO 2008/042805 A2 For example, a cooktop panel apparatus having a cooktop panel unit and a coater unit is known.

From the WO 2012/007864 There is already known a cooktop panel apparatus having a cooktop panel unit made of polycrystalline silicon dioxide and having a coating unit having a first sub-coating, which on at least one Part of an upper surface of the cooking plate unit is arranged, and having a second partial coating, which is arranged at least on a part of an edge side of the cooking plate unit and consists of enamel.

From the US 5,866,239 A There is already known a cooktop apparatus having a cooktop unit and an enamel coating unit covering the top of the cooktop panel unit.

The object of the invention is in particular to provide a generic device with improved properties in terms of high comfort and / or increased creative freedom. The object is achieved by the features of claim 1, while advantageous embodiments and modifications of the invention can be taken from the dependent claims.

The invention is based on a cooktop plate device, in particular an induction cooktop plate device, with at least one cooktop plate unit and at least one coating unit, which has at least one first subcoating, which is arranged on at least a part of an upper side of the cooktop plate unit.

It is proposed that the coating unit has at least a second partial coating, which is arranged at least on a part of an edge side of the hob plate unit. A "cooking plate unit" is to be understood in particular as a plate unit, which is provided for setting up cooking utensils for heating and / or heating by at least one heating element, in particular induction heating element, which is arranged in particular under the plate unit, wherein energy from the heating element to the Gargeschirr preferably through the plate unit, in particular in the form of electromagnetic radiation, is transmitted. A "plate unit" should in particular be understood as a unit which has a thickness which corresponds to a maximum of 10%, in particular a maximum of 5%, advantageously a maximum of 2%, preferably a maximum of 1%, of a width and / or length of the plate unit. In particular, the disk unit has a main body which fills at least 30%, in particular at least 60%, advantageously at least 90%, of a smallest imaginary cuboid completely enclosing the disk unit. A "thickness" of the disk unit is to be understood in particular to mean a length of a shortest side of the smallest imaginary cuboid which constitutes the Complete disk unit. In particular, "lengths" and / or "widths" of the disk unit are understood to mean lengths of pages that are different from the shortest side. The hob plate unit is at least substantially formed of an at least glass-like material, in particular glass ceramic and / or borosilicate glass, alternatively of a composite material, in particular embedded in silicate matrix fibers, in particular stone fibers. The hob plate unit is at least substantially formed by at least one at least substantially transparent material. In particular, the plate unit has at least one, at least substantially flat, side surface, which preferably forms an upper side. An "upper side" of the hob plate unit is to be understood, in particular, as an outer side of the hob plate unit which, in at least one operating state, faces a cooking utensil to be heated. In particular, the top makes up at least 30%, in particular at least 40%, advantageously at least 45%, of an entire surface of the hob plate unit. A "coating unit" is to be understood in particular as an entirety of partial coatings applied to the hob plate unit. In particular, the coating unit is formed by partial coatings of different material and / or purpose. In particular, at least the first and / or the second partial coating has a thickness which corresponds to a maximum of 10%, in particular not more than 3%, advantageously not more than 1%, preferably not more than 0.3%, of a thickness of the plate unit. An "edge side" of the panel unit is to be understood, in particular, as an entirety of all areas which connect the top side and a bottom side of the panel unit, which is at least substantially opposite the top side. In particular, the edge side is at least partially, in particular at least 50%, advantageously at least 70%, preferably at least 90%, oriented at least substantially perpendicular to the top, in particular has an angle to the top, the maximum 30 °, in particular at most 15 ° , advantageously a maximum of 5 °, deviates from 90 °. By "provided" is to be understood in particular specially shaped, designed and / or equipped. The fact that an object is intended for a specific function should in particular mean that the object fulfills and / or executes this specific function in at least one application and / or operating state.

The inventive design can be achieved in particular an increased comfort and / or increased creative freedom. In particular, a uniform appearance can be achieved. In particular, an insight into an interior of a cooktop having the hob through an edge side of an at least partially transparent cooktop unit can be avoided. Advantageously, the first and second part coating adjoin one another, whereby a particularly uniform appearance can be achieved. In particular, the partial coatings merge into one another and / or are at least materially connected to one another. By the fact that two sub-coatings "adjoin one another" should be understood in particular that touch the sub-coatings along at least one contact surface.

It is also proposed that the first and second partial coating are formed by an at least substantially identical material. Alternatively and / or additionally, it is proposed that the partial coatings have at least substantially the same basic color tone, which is provided in particular at least partially, in particular at least in the first partial area, with at least one colored pattern and / or image.

At least the first partial coating, in particular both of the partial coatings, is formed by an at least email-like material. An "enamel-like" material is to be understood as meaning, in particular, a material which, at least in a hardened state, has a glassy and / or enamel-like appearance. In particular, the partial coating is formed from molten glass and / or ceramic frits which have been applied to the partial area and fused into a uniform layer. In particular, a homogeneous and / or hard surface can be achieved. In particular, a high degree of flexibility in a color choice can be achieved. In particular, a ceramic appearance of the disk unit may be generated. In particular, a high total rigidity and / or flexibility of the disk unit can be achieved. Alternatively and / or additionally, it is conceivable that at least one of the partial coatings, in particular at least the second partial coating, is formed from a stable, preferably thermally, in particular up to temperatures of 300 ° C., polymer, in particular a resin. The partial coating preferably has a Mohs hardness of at least 5, advantageously at least 6, preferably at least 7.

Furthermore, it is proposed that at least the first part coating extends over at least 50%, advantageously at least 80%, preferably at least 95%, of the entire upper side of the cooktop plate unit. In particular, the first part coating at least substantially touches each transition point between the top and the edge side. In particular, a high surface continuity can be achieved. In particular, a high durability can be achieved.

Furthermore, it is proposed that at least the second partial coating extend over at least substantially an entire edge side, in particular over at least 50%, advantageously at least 80%, preferably at least 95%, of the edge side of the hob plate unit. In particular, the second part coating at least substantially touches each transition point between the top and the edge side. In particular, a high surface continuity can be achieved. In particular, a high durability can be achieved.

Advantageously, starting materials of the first partial coating and the second partial coating are applied and / or cured with different processes, in particular at least one printing process, in particular an ink-jet printing process and / or screen printing, and / or a spraying process, in particular successively. In particular, the partial coatings are formed by applying coating base material contained in suspension and / or solution, wherein in a subsequent process at least solvent and / or carrier are volatilized and / or constituents of the coating base material enter into compounds with each other. In particular, a cheap and / or efficient method can be achieved. By means of a printing process, in particular a high degree of flexibility with regard to applicable patterns with respect to position and / or color can be achieved. In particular, a high efficiency can be achieved by means of a spraying process, which in particular serves at least for the application of the second partial coating.

Further advantages emerge from the following description of the drawing. In the drawing, an embodiment of the invention is shown.

Fig. 1

ein erfindungsgemäßes Kochfeld in einer Ansicht von oben und

Fig. 2

eine erfindungsgemäße Kochfeldvorrichtung in einer Schnittdarstellung entlang der Linie II-II in Figur 1.

It show in a schematic representation

Fig. 1

an inventive hob in a view from above and

Fig. 2

a hob according to the invention in a sectional view taken along the line II-II in FIG. 1 ,

The figures show no recess according to the invention, but serve to illustrate the invention.

FIG. 1 shows a cooktop 10 designed as an induction cooktop with a cooktop plate device 12 designed as an induction cooktop plate device.

The cooktop panel apparatus 12 includes a cooktop panel unit 14 and a coating unit 16. Under the cooktop unit 14 arranged heating elements are indicated by dashed lines. The coating unit 16 has a first partial coating 18 which extends over an entire upper surface 19 of the cooking plate unit 14. The coating unit 16 has a second partial coating 20, which is arranged on an entire edge side 21 of the hob plate unit 14 ( FIG. 2 ). The cooking plate unit 14 has a thickness of 4 mm. The first and second partial coating 18, 20 adjoin one another. The partial coatings 18, 20 touch each other along an entire transition region 22 between the upper side 19 and the edge side 21. The first and second partial coatings 18, 20 are materially bonded to one another since material of the partial coatings 18, 20 were easily mixed when applied in the transition region 22. As a result of the fact that the first partial coating 18 continues around edges of the hob plate unit 14 through the second partial coating 20, a high durability of the first partial coating 18 can be achieved due to a lower danger of splitting off.

In alternative embodiments of unclaimed examples, it is conceivable that a further partial coating, which advantageously merges into the second partial coating, at least partially covers an underside of the hob plate unit, in particular at least in an edge region, in order in particular to achieve a clean finish. Furthermore, it is conceivable that in further embodiments, only a part of the edge side, in particular at least one viewing area, which in particular excludes a rear part of the edge side, is covered with the second partial coating.

The first and second sub-coatings 18, 20 are formed from a substantially similar material that differs only in color pigments added to a base material. Both partial coatings 18, 20 are formed by enamel.

When fabricated, material of the first subcoat 18 is first applied to the top surface 19 by an ink jet printing process that provides high flexibility in possible patterns, images, and / or gradients. In a further step, material of the second partial coating 20 is applied to the edge side 21 in a spraying process. During spraying, application of additional material to the upper side 19 is at least substantially avoided by means of a mask. The applied materials of the two partial coatings 18, 20 are then converted into enamel in a single firing process.

The partial coatings 18, 20 are intended to arouse a ceramic appearance by their coloring. By enveloping the visible sides of the cooking plate unit 14, a, in particular transparent and / or unsightly, material of the cooking plate unit 14 can be hidden.

In alternative unclaimed methods, it is conceivable that the first part coating is cured, in particular fired, before the second part coating is applied. After application of material to the edge side by means of spraying process, the first part coating can be freed from any additionally applied material. Subsequently, the second part coating is cured or fired.

Furthermore, it is conceivable that both partial coatings are applied in a spray process, wherein in particular a detailed pattern and / or fine structures is dispensed with in order, for example, to produce a ceramic appearance. Furthermore, embodiments of the hob plate unit are conceivable, wherein at least the first part coating recesses, in particular for displaying cooking zones and / or creating a viewing and / or operating area for a display, in particular a touch display, wherein according to the invention a recess for creating a viewing area for a display must be present.

reference numeral

10

hob

12

Hotplate device

14

Hotplate unit

16

coating unit

18

part Finish

19

top

20

part Finish

21

edge side

22

Transition area

Claims (9)

1. Hotplate device, especially induction hotplate device, with at least one hotplate unit (14), which is formed at least substantially from an at least vitreous material and which is formed at least substantially from at least an at least substantially transparent material, and at least one coating unit (16), which has at least a first partial coating (18), which is arranged on at least one part of an upper side (19) of the hotplate unit (14), wherein the coating unit (16) has at least a second partial coating (20), which is arranged at least on one part of an edge side (21) of the hotplate unit (14), characterised in that at least one of the partial coatings (18, 20) is formed from an at least enamel-type material, wherein at least the first partial coating extends over at least 50% of the entire upper side of the hotplate unit and has at least one recess to create a visual region for a display.
2. Hotplate device according to claim 1, characterised in that the first and second partial coatings (18, 20) are adjacent to one another.
3. Hotplate device according to one of the preceding claims, characterised in that the first and second partial coatings (18, 20) are formed from an at least substantially identical material.
4. Hotplate device according to one of the preceding claims, characterised in that at least the first partial coating (18) extends over at least substantially the entire upper side (19) of the hotplate unit (14).
5. Hotplate device according to one of the preceding claims, characterised in that at least the second partial coating (20) extends over at least substantially the entire edge side (21) of the hotplate unit (14).
6. Method for producing a hotplate device (12), particularly an induction hotplate device, with at least one hotplate unit (14), which is formed at least substantially from an at least vitreous material and which is formed at least substantially from at least an at least substantially transparent material, and at least one coating unit (16), which has at least a first partial coating (18), which is arranged on at least one part of an upper side (19) of the hotplate unit (14), wherein the coating unit (16) has at least a second partial coating (20), which is arranged at least on one part of an edge side (21) of the hotplate unit (14), characterised in that at least one of the partial coatings (18, 20) is formed from an at least enamel-type material, wherein at least the first partial coating is formed extending over at least 50% of the upper side of the hotplate unit and at least one recess is formed to create a visual region for a display.
7. Method according to claim 6, characterised in that at least starting material of the first partial coating (18) and of the second partial coating (20) are applied with different processes.
8. Method at least according to claim 6, characterised in that at least starting material of at least one of the partial coatings (18) is applied in a spray method to the hotplate unit (14).
9. Hob with at least one hotplate device (12) according to one of claims 1 to 5.

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