EP3470741A1 - Hob system - Google Patents

Abstract

Hob system (100) comprising a worktop (200) and a cooking field device (1) with an induction device (2) wherein in the bottom (201) of the worktop (200) has a recess (202) is introduced, in which the cooking field device (1) received is. Furthermore, a cooling device (3) is provided, which is suitable and designed to cool the underside (201) of the worktop (200). The cooking field device (1) according to the invention comprises a housing device (11) and an induction device (2), wherein the induction device (2) is accommodated at least in sections in the housing device (11). On the underside (14) and / or one side (15) of the housing device (11), an opening (12) is provided, to which a fan device (4) is connected. Furthermore, the induction device (2) has a free flow cross section (9), which provides a fluidic connection between the upper side (10) of the cooking field device (1) and the opening (12).

Description

The present invention relates to a hob system comprising at least one worktop and at least one cooking field device with at least one induction device. The present invention also relates to a cooking field device, in particular for use in a hob system.

In modern kitchens, design plays an increasingly important role. Also in the field of cooktops ever greater demands are placed on the look but also on the easy cleaning.

So hobs should be as inconspicuous and also preferably no gap between the hob and worktop remain so that no dirt between the hob and worktop can attach.

Here are integrated from below into a work surface integrated hobs. When not cooked, they are indistinguishable from the rest of the work surface. Such a device is for example from the DE 10 2011 000 278 A1 known. In this case, the top of the worktop over the cooking point is formed uniformly, as the publication DE 20 2006 000 446 U1 shows. Since the cookware is placed directly on the work surface and heated by means of induction coils, cleaning is also very easy.

However, a disadvantage of known cooktops integrated into the work surface from below is that, as a rule, special materials, such as glass ceramics, have to be used for the work surface, since otherwise thermal problems may arise. Such a household appliance with a hob below a formed from glass ceramic worktop is from the document DE 20 2015 006 354 U1 known. Heat is transferred to the work surface through the hob and pans located under the work surface, so temperature resistant materials must be used.

Suitable and used for such hobs materials such as those from the document EP 2 217 036 A1 However, known glass ceramic are usually relatively expensive and also often only very expensive to process.

It is therefore the object of the present invention to provide a built-in a worktop hob available, in which the overheating of the worktop is effectively avoided, so that preferably conventional materials, such as wood or wood-based materials, natural stone or artificial stone materials are used for the countertop can.

This object is achieved by a hob system with the features of claim 1 and by a cooking field device with the features of claim 11. Preferred developments of the invention are the subject of the dependent claims. Further advantages and features of the invention will become apparent from the embodiments.

The hob system according to the invention comprises at least one worktop and at least one cooking field device with at least one induction device. In this case, at least one recess is introduced into the underside of the worktop, in which the cooking field device is accommodated at least in sections. Furthermore, at least one cooling device is provided, which is suitable and designed to cool at least the underside of the worktop.

The fact that the cooling device is suitable and designed to cool the underside of the worktop means according to the invention that the cooling device is suitable and designed to cool the underside of the worktop in the region of the recess so that the worktop is cooled at least in the area of the cooking surface device , In this case, too much heating of the worktop can be avoided in particular by the cooling device, which could otherwise be done for example by the operation of the hob itself or by standing on the worktop cooking vessels.

The induction device according to the invention comprises in particular at least one induction coil and a corresponding power and / or control electronics.

The footprint of the hob system is preferably provided by the worktop, with cookware such as a pot is placed directly for heating food or for cooking on the top of the worktop.

The recess in the worktop is provided such that the entire cooking field device or only a part thereof, at least one cooling air channel is received in this. A recess is according to the understanding of the present invention, no opening of the worktop, but a introduced at the bottom of the worktop trough. In the installation position of the worktop, the bottom is closer to the center of the earth than the top. Preferably, the top of the worktop remains unchanged in the formation of the recess. However, it is also possible to produce a worktop according to the invention, in which the recess with the worktop is formed or f first an opening in the worktop is generated and then the opening is partially filled and / or covered on the top of the worktop of an additional layer material becomes. In particular, the recess is provided in the worktop such that the remaining thickness of the worktop in the region of the recess does not fall below approximately 4 mm. Such a remaining residual thickness of the worktop is useful to to ensure sufficient stability of the installation surface for cookware. However, other strengths can be provided depending on the design and material.

Preferably, the cooking field device is spaced from the worktop in the recess, in which case, for example, a gap or a free flow cross section of about 3 mm remains. Together with the remaining thickness of the worktop of 4 mm creates a total distance between the induction device and the set up on the worktop cookware of about 7 mm, which corresponds to the structure of a conventional cooktops.

The cooling device may comprise or be formed as any known type of cooling device. In particular, an active or a passive cooling device may be provided, wherein z. B. a cooling with air and / or water can be used advantageously.

Particularly preferably, the worktop consists of a usual for countertops material such as coated chipboard or pressboard. Thus, the processing of the countertop or the introduction of the recess is particularly simple and inexpensive to produce, for example, by a carpenter or the kitchen maker.

The hob system according to the invention offers many advantages. A considerable advantage is that a visually appealing hob or hob system is made available, which fits perfectly into the overall impression of the kitchen. Without a standing on the worktop pot, the hob or the hob system can not be seen because only the worktop in the same appearance as the rest of the work surface in the kitchen can be seen.

In addition, you can also use the worktop in the field of cooking hob also normal as a countertop when the hob system is not operated. Thus, the hob according to the invention can be used advantageously especially in small kitchens, in which the work space is limited space.

Due to the hob system according to the invention with the appropriately designed cooling device is also avoided that the worktop heated too much by the cooking field and / or by the upstanding on the worktop cooking vessels, so that damage to the worktop is effectively avoided.

Preferably, the cooling device comprises at least one fan device. In such an embodiment, the cooling of the worktop and / or the cooking field device via an air flow, whereby an optimal dissipation of the heat can be achieved.

Particularly preferably, the cooling device is suitable and designed to cool the cooking field device. Thus, by means of a cooling device both the worktop as well as the cooking field device are cooled, whereby a particularly effective cooling of the entire hob system is achieved.

In expedient developments, at least one free flow cross section is formed between the worktop and the cooking field device. In this case, such a flow cross-section may preferably be provided laterally and / or at the top between the work surface and the cooking field device. In particular, a free flow cross section of about 3 mm is preferred.

In particularly preferred embodiments, the recess and / or the cooking field device comprises at least one spacer device and / or at least one flow channel. This ensures that the cooking field device is not completely or not completely flat zw. Full surface rests against the worktop or in the recess in the worktop. This ensures that either a free flow cross section between the cooking field device and the worktop is provided or maintained by the spacer device and / or by a flow channel. In this case, for example, channels can be milled into the recess in the worktop or webs can remain in the recess, so that the cooking field does not lie completely flat in the recess. Thus, an air circulation between the hob and the worktop can be guaranteed. Optionally or additionally, webs and / or channels can also be provided in the cooking field device.

Preferably, the spacer device comprises at least one web. Here, a defined distance between the hob and the worktop is given by a web.

In expedient developments, the cooking field device comprises at least one temperature sensor. In this case, in particular, an NTC sensor can be advantageously used, by means of which, for example, independently of one another, the heating power of the induction device can be adjusted together with a control device. So z. B. even if used improperly damage to the cooking field and / or the worktop can be prevented. For this purpose, the temperature sensor preferably monitors both the temperature of the hob and the worktop.

At least one induction device preferably provides at least one free flow cross section to the top side of the cooking field device, wherein the fan device is fluidically connected to this free flow cross section. In this case, the fluidic connection between the fan device and the free flow cross section to the top of the cooking field device can be provided directly or indirectly. So it is particularly possible that by an induction coil Air is sucked or blown through the gap between cooking hobs worktop.

Particularly preferably, the cooking field device comprises at least one housing device in which the at least one induction device is received at least in sections. In this case, the housing device comprises at least one opening, to which the fan device is connected. For example, the fan sucks air out of the housing, the air being sucked in via the induction coils or the free flow cross section in the coils between the hob and the worktop. It is also possible that the fan is designed as a fan and that air is blown through the housing of the cooking field through the free flow cross section of the induction device in the gap between the hob and worktop.

In expedient developments, at least one ventilation channel passes through the housing device. In this case, this ventilation channel provides a free flow cross-section from below the hob to above the hob, so from below the cooking field to the gap between cooking field and worktop available.

Preferably, such a ventilation duct is formed above the cooking field device, ie in the gap between cooking field device and worktop, as a guide element, which forms a flow-tight barrier. Thus, in particular, the channel is arranged at a location which has no fluidic contact with the outside of the hob.

The cooking field device according to the invention comprises at least one housing device and at least one induction device, wherein the induction device is at least partially accommodated in the housing device. Furthermore, at least one opening is provided at least on the underside and / or on at least one side of the housing device, to which at least one cooling device or fan device is connected. The induction device has at least one free flow cross section, which provides a fluidic connection between the top of the cooking field device and the opening in the bottom and / or the side of the housing device.

In this case, the housing device is otherwise preferably substantially dense, so that air can be sucked from the opening to the free flow cross-section and / or blown.

The cooking field device described above is particularly suitable for installation from below into a recess of a worktop, so in conjunction with the worktop a hob system is provided, as described above.

In expedient developments, the cooking field device comprises at least one temperature sensor, which is designed in particular as an NTC sensor.

The cooking field device according to the invention also offers the advantages previously described for the hob system according to the invention. In this case, the cooking field device is provided in particular for use in a hob system together with a worktop, which can be ensured by the corresponding design of the cooking field optimal cooling both the cooking field and the worktop.

At least one ventilation channel preferably passes through the housing device. In this case, such a ventilation duct provides a fluidic connection from below the cooking field device to the top of the cooking field device so that an air flow is generated in the gap between the hob field and worktop in the installed state of the cooking field via the ventilation duct.

Particularly preferably, the ventilation channel spans at least one peripheral section of the induction device. In particular, such a peripheral section of the induction device is surrounded by the ventilation channel, which has no direct contact or no direct fluidic connection to an outside area of the cooking field device. In particular, if more than one coil, for example two, three or four coils are arranged, ventilation channels are provided between the coils, so that a particularly uniform ventilation of the gap between the hob and worktop is guaranteed.

In expedient developments, at least one spacer device and / or at least one flow channel is formed on or in the upper side of the cooking field device. This ensures that between the hob and worktop in the installed state at least one free flow cross-section remains, so that, for example, air can be sucked or blown through between cooking hobs worktop. The use of a spacer device, such as a web and / or flow channels causes the cooking field does not lie flat against the worktop, but that at least in fluidically relevant areas a predetermined distance between hob and worktop remains so that air can circulate.

Figur 1

eine rein schematische Darstellung eines Ausführungsbeispiels eines erfindungsgemäßen Kochfeldsystems in einer perspektivischen Ansicht;

Figur 2

eine rein schematische Darstellung eines Ausführungsbeispiels einer Arbeitsplatte eines erfindungsgemäßen Kochfeldsystems in einer perspektivischen Ansicht;

Figur 3

eine rein schematische Darstellung eines weiteren Ausführungsbeispiels einer Arbeitsplatte eines erfindungsgemäßen Kochfeldsystems in einer perspektivischen Ansicht;

Figur 4

eine rein schematische Darstellung eines Ausführungsbeispiels eines erfindungsgemäßen Kochfeldsystems mit einer erfindungsgemäßen Kochfeldeinrichtung in einer Schnittansicht von der Seite;

Figur 5

eine rein schematische Darstellung eines weiteren Ausführungsbeispiels eines erfindungsgemäßen Kochfeldsystems mit einer erfindungsgemäßen Kochfeldeinrichtung in einer Explosionsdarstellung;

Figur 6

eine rein schematische Darstellung eines Ausführungsbeispiels einer erfindungsgemäßen Kochfeldeinrichtung in einer perspektivischen Ansicht; und

Figur 7

eine rein schematische Darstellung eines weiteren Ausführungsbeispiels einer erfindungsgemäßen Kochfeldeinrichtung in einer perspektivischen Ansicht.

Further advantages and features of the present invention will become apparent from the embodiments, which are explained below with reference to the accompanying figures.

FIG. 1

a purely schematic representation of an embodiment of a cooktop system according to the invention in a perspective view;

FIG. 2

a purely schematic representation of an embodiment of a worktop of a cooktop system according to the invention in a perspective view;

FIG. 3

a purely schematic representation of another embodiment of a worktop of a hob according to the invention in a perspective view;

FIG. 4

a purely schematic representation of an embodiment of a cooktop system according to the invention with a cooking field device according to the invention in a sectional view from the side;

FIG. 5

a purely schematic representation of another embodiment of a cooktop system according to the invention with a cooking field device according to the invention in an exploded view;

FIG. 6

a purely schematic representation of an embodiment of a cooking field device according to the invention in a perspective view; and

FIG. 7

a purely schematic representation of another embodiment of a cooking field device according to the invention in a perspective view.

In FIG. 1 a cooking hob system 100 according to the invention is shown purely schematically, which comprises a worktop 200 and a cooking field device 1 according to the invention.

The cooking field device 1 according to the invention is characterized in that the mounting surface 206 for cookware is not provided by the cooking field device 1 itself, but by the work surface 200. For this purpose, the cooking field device 1 is inserted into a recess 202 in the bottom 201 of the countertop 200, so that the induction devices 2 of the cooking field device 1 heat on the worktop 200 upstanding cookware. Thus, several cooking zones 207 are provided directly on the countertop 200, depending on the design.

In FIG. 2 is in a purely schematic perspective view of a worktop 200 shown from above, in which case the recess 202 in the bottom 201 of the worktop 200 is indicated purely schematically.

So that the cooking field device 1 or the induction devices 2 do not lie flat against the worktop 200 in the recess 202, in the exemplary embodiment shown here, spacing devices 203 are provided in the recess 202, which are formed here as webs 205.

These webs 205 can be easily introduced, for example by a joiner in the countertop 200. Namely, the worktop may consist of a material common to worktops 200, such as pressboard or other wood materials. Thus, a joiner can easily mill the recess in the bottom 201 of the worktop 201 and leave the distance means 203 or the webs 205 stand. It is thus achieved that the cooking field device is arranged at a defined distance from the underside 201 in the work plate 200 in the recess 202.

In FIG. 3 another embodiment of a countertop 200 for a cooktop system 100 according to the invention is shown purely schematically. In contrast to the above-described worktop 200 webs 205 are not provided here, but there is a two-dimensional cutout as a recess 202 before. In the recess 202 further recesses are introduced, which are designed here as flow channels 204. These flow channels 204 cause the cooking field device 1 and in particular the induction device 2 does not rest completely flat on the underside 201 of the countertop 200 in the recess 202.

It is generally preferred that the recess 202 is introduced into the work surface 200 such that the remaining work surface 200 in the region of the recess 202 still has a remaining residual thickness of at least 4 mm. This ensures a further sufficient stability of the countertop 200 in the region of the recess 202. In other embodiments, the remaining thickness of the countertop 200 in the region of the recess 202 but also be larger or smaller.

In FIG. 4 is shown purely schematically in a sectional view of the operation of the hob system 100 according to the invention. Again, it can be seen that the cooking field device 1 is inserted into a recess 202 in the bottom 201 of the countertop 200. In this case, the cooking field device 1 is arranged at a distance from the underside 201 of the worktop 200, for which purpose spacer devices not shown here are provided.

Due to the spaced arrangement of the cooking field 1 to the worktop 200 remains between the hob 1 and countertop 200, a free flow cross-section 300, said gap 301 between hob 1 and worktop 200 here about 3 mm is. However, other distances between cooking device 1 and worktop 200 in the hob system 100 according to the invention can also be provided.

When using a residual thickness of 4 mm for the countertop 200 in the region of the recess 202 and at a free flow cross section 300 or gap 301 of about 3 mm, the distance between the induction device 2 and a set up on the footprint 206 cookware is approximately 7 mm, which corresponds to the normal basic structure of conventional hobs.

Since the mounting surface 206 for cookware in the hob system 100 according to the invention is provided by a conventional worktop 200, overheating of the worktop 200 must be avoided in order to prevent damage thereto.

In order to ensure sufficient cooling of the worktop 200 and also the cooking field device 1, as described above, the cooking field device 1 spaced from the worktop 200 is arranged. Furthermore, a cooling device 3 is provided with a fan device 4, which sucks air through the free flow cross-section 9 between cooking field device 1 and worktop 2 therethrough. Through this air flow, both the underside 201 of the worktop 200 in the region of the recess 202 and the cooking field device 1 and in particular the induction devices 2 are sufficiently cooled, so that overheating of the worktop 200 or cooking field device 1 is avoided.

To control the heating of worktop 200 and / or cooking field device 1, a temperature sensor 8 is provided, which is designed here as an NTC sensor. By way of this, a control of the cooling device 3 can also be achieved automatically, so that a defect or the like can be avoided, in particular in the event of incorrect operation of the hob system.

In FIG. 5 is purely schematic of the basic structure of a cooktop system 1 according to the invention with a worktop 200 and a cooking field device 1 in a purely schematic perspective exploded view.

In the embodiment shown here, the cooking field device 1 comprises a housing device 11, in which the induction device 2 is arranged. In the embodiment shown, an opening 12 is provided in the lower side 14 or in the lower part 17 of the housing device 11, which opening is in operative connection with the cooling device 3 or the fan device 4.

In the lower part 17 of the housing device 11, the induction devices 2 are used, wherein the lower part 17 is substantially sealed with a lid 18. In the induction devices 2 and in the cover 18 free flow cross-sections 9 are provided, so that the upper side 10 of the housing device 11 via the free flow cross sections 9 in connection to the fan device 4 on the bottom 14 of the housing device 11 are.

If air is sucked out of the housing device 11 via the fan device 4, air is sucked into the housing device 11 via the free flow cross sections 9. As a result, air is drawn through the free flow cross-section 300 or through the gap 301 between the cooking surface device 1 and worktop 200 when the cooking surface device 1 is inserted into the recess 202 of the worktop 200, whereby this area is effectively cooled. In this case, the cooling takes place via an air flow between cooking field device 1 and worktop 200, whereby the fan device 4 can work in both directions.

In order that uniform cooling or a uniform air flow can be guaranteed, ventilation channels 13 are additionally provided in the housing device 11, which pass through the housing device 11 from the underside 14 to the upper side 10. These ventilation channels 13 are formed here as a guide element 16, which are arranged in the embodiment shown on the outer sides 19 of the housing device 11 facing away from the side of the induction devices 2. Since the ventilation channels 13 pass through the housing device 11, 13 air is sucked through these channels when the fan device 4 in the opening 12 is in operation.

By the air flow generated by the fan 4, air is sucked through the free flow cross sections 9 in the housing device 11, wherein air is sucked from the edge portions 19 of the cooking field 1 through the free flow cross section 300 and at the shaded by the induction devices 2 side on the ventilation channels 13 is pulled. Thus, a total uniform flow through the free flow cross section 300 can be achieved, so that a particularly uniform cooling of this area is achieved.

In the FIGS. 6 and 7 in each case an embodiment of a cooking field device 1 according to the invention is shown from above. Here, too, one recognizes the free flow cross sections in the induction devices 2 and in the covers 18 of the housing device 11. The ventilation channels 13 are provided in each case, which surround at least one circumferential section of the induction devices 2. In this case, the ventilation channels 13 are each arranged such that the side of the induction device 2, which is not directly associated with an edge portion 19, is supplied via the ventilation channels 13 with air.

Thus, the cooking field device 1 is not applied flat against the countertop 200, whereby no free flow cross-section 300 would remain, are two different variants in the FIGS. 6 and 7 shown to achieve a free flow area 300.

In both cases shown, a uniform recess 202 can be milled into the underside 201 of the worktop 200. In the embodiment according to FIG. 6 are provided on the top 10 of the housing device 11 distance means 5, which are designed here as webs 7. This ensures that a free flow cross section 300 between the work surface 200 and the cooking field device 1 and in particular to the free flow cross sections 9 remains. Thus, at any time air can be sucked through the free flow cross-sections 9 and / or blown.

In FIG. 7 another embodiment is shown, in which case flow channels 6 are provided in the upper side 10 of the housing device 11. Air can be sucked and / or blown through the free flow cross sections 9 at any time via these flow channels 6, even if the rest of the cooking field device 1 or the upper side 10 of the housing device 11 rests against the underside 201 of the worktop 200.

LIST OF REFERENCE NUMBERS

1

Hob unit

2

inductor

3

cooling device

4

Fan means

5

standoff

6

flow channel

7

web

8th

temperature sensor

9

free flow cross section

10

top

11

housing means

12

opening

13

ventilation duct

14

bottom

15

page

16

vane

17

lower part

18

cover

19

edge section

100

Hob System

200

countertop

201

bottom

202

recess

203

standoff

204

flow channel

205

web

206

footprint

207

cooking zone

300

free flow cross section

301

gap

Claims (14)

Cooking field system (100) comprising at least one worktop (200) and at least one cooking field device (1) with at least one induction device (2),
characterized,
in that at least one recess (202) is accommodated in the underside (201) of the work surface (200), in which the cooking field device (1) is accommodated at least in sections and at least one cooling device (3) is provided which is suitable and designed to cool the underside (201) of the worktop (200). Cooking field system (100) according to claim 1, characterized in that the cooling device (3) comprises at least one fan device (4). Cooking field system (100) according to one of the preceding claims, characterized in that the cooling device (3) is suitable and designed to cool the cooking field device (1). Cooking field system (100) according to one of the preceding claims, characterized in that between the work surface (200) and the cooking field device (1) at least one free flow cross-section (300) is formed. Cooking field system (100) according to one of the preceding claims, characterized in that the recess (202) and / or the cooking field device (1) at least one spacer device (5, 203) and / or at least one flow channel (6, 204). Cooking field system (100) according to the preceding claim, characterized in that the spacer device (5, 203) comprises at least one web (7, 205). Cooking field system (100) according to one of the preceding claims, characterized in that the cooking field device (1) comprises at least one temperature sensor (8). Cooking field system (100) according to one of the preceding claims and claim 2, characterized in that the induction device (2) at least free flow cross-section (9) to the top (10) of the cooking field device (1) provides and that the fan device (4) fluidly with the free flow cross-section (9) is connected. Cooking field system (100) according to one of the preceding claims, characterized in that the cooking field device comprises at least one housing device (11) in which the induction device (2) is accommodated at least in sections, wherein the housing device (11) comprises at least one opening (12), to which the fan device (4) is connected. Cooking field system (100) according to one of the preceding claims, characterized in that at least one ventilation channel (13) passes through the housing device. Cooking field device (1) comprising at least one housing device (11) and at least one induction device (2), the induction device (2) being accommodated at least in sections in the housing device (11),
characterized,
that at least on the underside (14) and / or at least one side (15) of the housing means (11) at least one opening (12) is provided which is connected to which at least one fan device (4) and that the induction means (2) at least one free flow cross-section (9), which provides a fluidic connection between the top (10) of the cooking field device (1) and the opening (12). Cooking field device (1) according to the preceding claim, characterized in that at least one ventilation channel (13) passes through the housing device. Cooking field device (1) according to one of the two preceding claims, characterized in that the ventilation channel (13) spans at least one peripheral portion of the induction device (2). Cooking field device (1) according to one of the three preceding claims, characterized in that on the upper side (10) of the cooking field device (1) at least one spacer device (5) and / or at least one flow channel (6) is formed.

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