EP2770262B1 - Device for a cooking hob with a mounting frame and a base part and cooking hob with such a device - Google Patents

Description

The invention relates to a device for a hob, with a mounting frame and a base part, in which at least one hole is formed, on the edge of which a strip-like shielding element is arranged and is formed upwardly from the hole plane, the mounting frame at least one in the direction of the Hole-oriented separating web for dividing the space surrounded by the mounting frame into subspaces. The invention also relates to a household appliance with a device.

Hobs are known from the prior art which have a mounting frame by means of which the hob is fastened in a recess, for example in a worktop. In addition to such a mounting frame, the hob can also have a decorative frame which covers the mounting frame from above and is arranged around a hob plate, which can be made of glass or glass ceramic. A hob also includes radiators, by means of which cooking zones on the hob plate can be heated. It is provided that the mounting frame may also have a base part which is arranged as a lower cover element.

From the DE 102 59 744 A1 a mounting frame for a hob is known. The mounting frame comprises a base frame, on which at least one shielding element that is impermeable to electromagnetic waves is arranged for shielding these electromagnetic waves and / or heat radiation.

In addition, from the DE 296 10 465 U1 a holding arrangement for radiant heaters in a glass ceramic cooktop is known. In the bottom of a trough trough, retaining or fixing lugs are formed, which are arranged approximately perpendicular to the trough trough bottom. A radiant heater support shell is placed between these raised or fixing tabs.

Furthermore, the US 4,862,795 a cooktop grill with an improved reflector pan.

The US 2,337,349 discloses a ventilation structure.

The US 4,736,729 discloses an air flow system for a gas downwind area.

The EP 1 444 942 A1 discloses a cooking device.

Finally, the KR 10 2010 0084 287 A a built-in cooking device, wherein an electrical control unit and a radiation part are cooled at the same time.

The document EP 2 147 571 B1 discloses a cooktop according to the preamble of claim 1.

In Fig. 1 a cooktop 1 is shown in a schematic representation, which has a cooktop plate 2, which can be made of glass or glass ceramic. The hob 1 comprises only three cooking zones 3, 4, 5 and 6 shown in number and position as an example. In addition, an operating device 7 is formed. The hob 1 comprises a mounting frame 8.

As far as an explanation of configurations known from the prior art, such a hob 1 in Fig. 1 shown in a sectional view in the xy plane. In Fig. 2 a section along the section line II-II is shown.

A heater 9 is arranged under the hob 2. In the embodiment shown, the mounting frame 8 surrounds a separating web 10, which is a carrier for electronic components, and which extends vertically downward from the hob plate 2. This separating web 10 has two partial webs 11 and 12 which are arranged parallel to one another at a distance. By means of this separating web 10, the space under the hob plate 2 and thus also between the mounting frame 8 and a base part 13 is subdivided into subspaces 14 and 15. Electronic components are arranged in the subspace 14, which are shielded by the separating web 10 from the heat radiation of the radiator 9. As shown in Fig. 2 can be seen, the bottom part 13 has a hole 16 which is formed in the region of the separating web 10. However, the bottom part 13 is in the vertical direction and thus in the y direction by a relatively large one Gap spaced from the webs 11 and 12, so that the vertical gaps 17 and 18 are formed, through which the heat radiation and convection heat and moisture can pass unhindered. This can impair the function of the electronic components in subspace 14.

It is an object of the present invention to provide a cooktop in which the subspaces between an assembly frame and a base part of a cooktop are improved.

This object is achieved by a hob according to the independent claim.

A hob according to the invention comprises a mounting frame and a base part separate therefrom, in which at least one hole is formed. A strip-like shielding element is arranged on a hole edge, which protrudes upward from the hole plane. An essential idea of the invention is to be seen in the fact that the mounting frame surrounds at least one dividing bar oriented in the direction of the hole, which is designed to subdivide the space surrounded by the mounting frame into subspaces, and the dividing bar and the shielding element are arranged to overlap when viewed in the direction of the hole axis are. The separator can be made of metal or plastic and serves as a carrier for electronic components. Such a vertical overlap of these two components improves the containment of the subspaces both towards one another and downwards. As a result, significant advantages can be achieved with regard to the avoidance of an undesirably high transfer of, in particular, convection heat and moisture between the subspaces, and moreover the accessibility of the subspaces from below via the base part can also be restricted. Even if, for example, such a hob is arranged above a drawer with cutlery or the like, it can be prevented that cutlery such as this becomes jammed or spread when closing the drawers and undesirably enters the hob from below into the hob between the separating web and the shielding element. The invention therefore prevents vertical free spaces from being formed between a lower edge of the separating web and the shielding element.

It is preferably provided that a non-linear flow path is formed between the subspaces separated by the separating web and the shielding element. As a result, in particular, a meandering air flow is predetermined and the air flow is forced on, so that the transmission of, in particular, the convection heat is also significantly reduced.

The air exchange between a hot compartment and a compartment to be kept cool, in which temperature-sensitive electronic components may be arranged, is minimized, since at most small air gaps are formed, which are also geometrically and positionally offset or designed differently, which means that the meandering air flow results and the air exchange is thereby minimized.

It is preferably provided that the separating web and the shielding element are spaced apart over an entire overlap height. A direct encapsulation which prevents the exchange of air is not provided in this embodiment, so that an undesirable heat build-up in the hot subspace is prevented. The heat can thus be dissipated in a targeted and defined manner and then also dissipated from the hob via the hole in the base part.

It is preferably provided that a distance between the separating web and the shielding element in the overlap area is smaller than a thickness of the separating web measured in the direction of the distance at the overlap area. The distance between the separating web and the shielding element is in particular dimensioned in the direction perpendicular to the hole axis. This geometric specification between the distances and the thickness of the separating web further improves the advantages mentioned above. In particular, it is provided that a distance, in particular in the direction perpendicular to the hole axis, between the separating web and the shielding element in the overlap area is greater than or equal to the thickness of the shielding element measured in the direction of the distance and in the overlap area. Here, too, the advantages mentioned above are further favored.

It is provided according to the invention that the separating web is double-walled and has two partial webs which are arranged at a distance from one another and are oriented in the direction of the hole. A shielding element is arranged adjacent to the partial web in the direction of the hole axis and overlapping with the adjacent partial web. This is a design that is particularly noteworthy since, even with a more complex geometry of the separating web, the shielding element is designed accordingly with its upstanding tabs and thus viewed in the vertical direction, are pushed into one another or are guided into one another.

In particular, it is provided that an overlap height between a first partial web and a first shielding element is different from an overlap height between a second partial web and a second shielding element. This can meet the individual requirements for the geometry and design of the webs as well of the shielding element and the subspaces are taken into account individually in order to achieve and favor the advantages mentioned above.

It is preferably provided that at least one separating web, in particular a partial web of the dividing web, has a free edge facing the hole, which is covered by the base part and is gripped behind by the adjacent shielding element. The free edge of this partial web is thus arranged within the partial frame covered by the shielding element from below and is therefore not directly accessible via the hole in the shielding element. Access to the partial space is also particularly prevented thereby, on the other hand the air circulation which may be desired is provided by a small gap which is formed between a side wall of the partial web and a side wall of the shielding element.

It can also be provided that at least one separating web, in particular a partial web, has a free edge facing the hole, which is exposed towards the hole. In this embodiment, there is no component between the edge and the hole and this free edge is therefore not covered by the bottom part from below.

It is preferably provided that a heater and at least one electronic component, which is temperature-sensitive, are arranged in a sub-room and in a second sub-room.

In particular, it is provided that the shielding elements are formed in one piece with the base part and are formed by free cuts, the tabs then produced being bent out of the plane of the shielding element, in particular bent vertically upward.

In particular, the bottom part is formed from sheet metal.

Fig. 1

eine perspektivische Darstellung eines Kochfelds;

Fig. 2

eine Schnittdarstellung eines aus dem Stand der Technik bekannten Kochfelds;

Fig. 3

eine Schnittdarstellung eines Ausführungsbeispiels eines erfindungsgemäßen Kochfelds mit einer erfindungsgemäßen Vorrichtung als Ausführungsbeispiel; und

Fig. 4

eine perspektivische Schnittdarstellung von unten auf das Kochfeld und die Vorrichtung gemäß Fig. 3.

An embodiment of the invention will be explained in more detail with reference to schematic drawings. Show it:

Fig. 1

a perspective view of a hob;

Fig. 2

a sectional view of a hob known from the prior art;

Fig. 3

a sectional view of an embodiment of a hob according to the invention with a device according to the invention as an embodiment; and

Fig. 4

a perspective sectional view from below of the hob and the device according to Fig. 3 ,

Identical or functionally identical elements are provided with the same reference symbols in the figures.

In Fig. 1 a hob 1 is shown in a perspective view, as has already been explained in the introduction.

The hob 1 according to Fig. 1 is in an embodiment of a device 19 according to the invention, as shown in a sectional view in the section plane xy along the section line III-III in Fig. 1 is shown trained. The hob 1 is in connection with the representation in Fig. 3 thus also to be regarded as an exemplary embodiment of a hob according to the invention.

With regard to in Fig. 3 components shown will refer to the explanations Fig. 2 pointed.

The hole 16 has a vertical hole axis A. The separating web 10 is oriented in the direction of this hole axis A, the partial webs 11 and 12 in particular being oriented parallel to one another and preferably extending parallel to the hole axis A.

As shown in Fig. 3 It can be seen that the base part 13 has shielding elements 20 and 21 which are upward and thus oriented in the direction of the partial webs 11 and 12. These shielding elements 20 and 21 are formed by upwardly bent tabs which extend from the one-piece bottom part 13 Free cuts are formed and are bent upwards. In the embodiment shown, the shielding elements 20 and 21 open directly at an edge 22 of the hole 16 and are arranged parallel to the partial webs 11 and 12 and thus also to the hole axis A.

As shown in Fig. 3 can also be seen, the partial webs 11 and 12 are arranged in the vertical direction and thus overlapping in the y-direction with the shielding elements 20 and 21. A vertical gap as defined by columns 17 and 18 in Fig. 2 is formed according to the prior art is therefore in Fig. 3 unavailable.

In addition, this configuration also forms a non-rectilinear, but in particular meandering, flow path for air from the partial space 15 to the partial space 14.

For this purpose, it is provided that a gap 22 is formed between an outer side 12a of the second partial web 12 facing away from the partial web 11 and a vertical side wall 21a of the shielding element 21 facing the partial web 12.

In addition, it is provided in this partial area that a free edge 24 of the partial web 12 is exposed towards the hole 16 and is therefore not covered by the base part 13.

In addition, it is provided that an air gap 25 is likewise formed between an inner side 11a of the first partial web 11, which faces the second partial web 12, and a vertical side wall 20a of the first shielding element 20.

As shown in Fig. 3 It can be seen that the base part 13 is formed in the region of the first partial web 11 such that a free edge 26 is covered by the base part 13 downwards.

The gaps 23 and 25 are dimensioned so narrow in the x-direction and thus in the horizontal direction that no mechanical parts, such as cutlery or the like, can be inserted through them.

In both arrangements of the partial webs 11 and 12 with the respectively adjacent spacer elements 20 and 21, a horizontal spacing between the adjacent components mentioned is provided over an entire overlap height and thus at a height in the y direction.

It can be provided that a distance between the partial web 11 and the shielding element 20 and / or between the partial web 12 and the shielding element 21, which is dimensioned in the direction perpendicular to the hole axis A and thus dimensioned in the x-direction, is smaller in the vertical overlap region than in the direction of the distance in the overlap area is the thickness of the partial web 11 and / or the partial web 12.

It can also be provided that a distance between the partial web 11 and the shielding element 20 and / or the partial web 12 and the shielding element 21 in the direction perpendicular to the hole axis A is greater than or equal to the thickness of the shielding element in the direction of the distance and in the overlapping region 20 and / or the shielding element 21.

As shown in Fig. 3 It can also be seen that the vertical overlap height between the first partial web 11 and the first shielding element 20 is different from a vertical overlap height between the second partial web 12 and the second shielding element 21.

In Fig. 4 the device 19 is shown in a perspective sectional view with a view of the base part 13. The position arrangement of the partial webs 11 and 12 and the shielding elements 20 and 21 can be seen.

LIST OF REFERENCE NUMBERS

1

hob

2

Hotplate

3

cooking zone

4

cooking zone

5

cooking zone

6

cooking zone

7

operating device

8th

mounting frame

9

radiator

10

divider

11

partial web

11a

inside

12

partial web

12a

outside

13

the bottom part

14

subspace

15

subspace

16

hole

17

gap

18

gap

19

device

20

shielding

20a

Side wall

21

shielding

21a

Side wall

22

edge

23

gap

24

edge

25

gap

26

edge

Claims (9)

1. Cooking hob (1) having a hob top (2), a mounting frame (8) and a separate bottom part (13), wherein at least one hole (16) is formed in the bottom part (13), and having at least one separating web (10) oriented towards the hole (16) for subdividing the space surrounded by the mounting frame (8) underneath the hob top (2) and thus also between the mounting frame (8) and the bottom part (13) into partial spaces (14, 15), wherein the separating web (10) is designed to be double-walled, and has two partial webs (11, 12) arranged spaced apart from one another and oriented towards the hole (16), characterised in that a strip-like shielding element (20, 21) is arranged at the edge of the hole (16) and is formed so as to project upwards out of the plane of the hole, and the separating web (10) and the shielding element (20, 21) are arranged to overlap when viewed in the direction of the hole axis (A), wherein adjacent to each partial web (11, 12) a shielding element (20, 21) is arranged so as to overlap with the adjacent partial web (11, 12) in the direction of the hole axis (A).
2. Cooking hob (1) according to claim 1, characterised in that thanks to the separating web (10) and the shielding element (20, 21) a non-linear flow path is formed between the partial spaces (14, 15) separated by the separating web (10).
3. Cooking hob (1) according to claim 1 or 2, characterised in that the separating web (10) and the shielding element (20, 21) are arranged spaced apart over an entire overlap height.
4. Cooking hob (1) according to claim 3, characterised in that a distance, in particular measured in the direction perpendicular to the hole axis (A), between the separating web (10) and the shielding element (20, 21) in the overlap region is smaller than the thickness of the separating web (10) measured in the direction of the distance.
5. Cooking hob (1) according to claim 3 or 4, characterised in that a distance, in particular measured in the direction perpendicular to the hole axis (A), between the separating web (10) and the shielding element (20, 21) in the overlap region is greater than or equal to the thickness of the shielding member (20, 21) measured in the direction of the distance.
6. Cooking hob (1) according to one of the preceding claims, characterised in that an overlap height between a first separating web (11) and a first shielding element (20) is different from an overlap height between a second separating web (12) and a second shielding element (21).
7. Cooking hob (1) according to one of the preceding claims, characterised in that at least one separating web (10), in particular a partial web (11, 12), has an exposed edge (24, 26) which faces the hole (16) and is covered by the bottom part (13) and is engaged from behind by the adjacent shielding element (20, 21).
8. Cooking hob (1) according to one of the preceding claims, characterised in that at least one separating web (10), in particular a partial web (11, 12), has an exposed edge (24, 26) which faces the hole (16) and is exposed towards the hole (16).
9. Cooking hob (1) according to one of the preceding claims, characterised in that a radiator (9) is arranged in a partial space (14, 15) and at least one electronic component is arranged in a second partial space (14, 15).

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