EP2292978B1 - Hotplate, in particular gas hotplate and method for assembling the hotplate - Google Patents

Description

The invention relates to a hob, in particular a gas hob, according to the preamble of claim 1 and a method for assembly or disassembly of the hob according to claim 14.

Hobs, especially gas hobs, for aesthetic reasons can be installed flush in a kitchen worktop, so that the shelf of a pot carrier is located approximately at the same level as the top of the countertop. Between the worktop and the flush-mounted hob, a seamless transition with a continuous surface can be provided. For this purpose, the hob is glued into the cutout of the worktop or welded in the case of a stainless steel worktop with this.

A generic gas hob has a hob housing, which is covered by a cover plate. The hob housing is supported in a final assembly state of the hob via the cover plate in the area of the worktop cut-out. In the final assembly state, therefore, the cooktop housing is suspended from the top cover plate or bolted to it.

The installation and removal of such a cooktop is expensive, since during assembly / disassembly of the entire device base is to be held from below by an additional worker or other suitable tools when the screw between the cover and the hob housing is solved.

From the DE 44 34 821 C2 is a gas hob is known, which is locked from above can be used in a cutout of a countertop. For this purpose, a mounting auxiliary frame is provided which can be fixed in the worktop cut-out.

From the DE 198 35 140 A1 is a hob with a ceramic hob known. Below the glass-ceramic cooking surface is a pan with hotplate heaters. The tub is connected via connecting elements with a mounting frame of the glass ceramic cooking surface. From the DE 84 16 246 U1 a built-in hob is known, at the bottom locking springs are attached, which can be locked with corresponding locking pieces on the boundary edge of the worktop cut-out.

From the DE 197 42 792 C1 as well as from the EP 0 014 487 A2 is in each case a gas hob with a hob housing known. The cooktop housing has a housing side wall with an outwardly angled support portion. In the installed position, the hob housing is supported on this support portion on an edge of a worktop cutout.

That from the EP 0 014 487 A2 known gas hob can be kept on the outwardly angled support portion regardless of the cover plate in the worktop cutout. To cover the gas hob, a cover plate is placed on the gas hob during assembly and connected via two screw with the housing during assembly. The cover plate is arranged above the outwardly angled support portion of the housing. Furthermore, this known gas hob in the housing side wall openings, which can be hooked into a laterally acting fastener. This fastening means is adapted to cooperate with the externally angled support portion of the housing, that the housing is clamped to the worktop.

The object of the invention is to provide a hob, in particular gas hob, and a mounting method in which the installation and removal of the hob is simplified.

The invention is solved by the features of claim 1 or claim 14. Advantageous developments of the invention are disclosed in the subclaims.

According to the characterizing part of claim 1, the hob has at least one pre-assembly on which the hob housing in a pre-assembly independent of the cover plate can be supported. When installing the hob in the Worktop, therefore, the hob housing can be easily pre-positioned on the pre-assembly without additional means are required to hold the hob housing. When removing the hob from the worktop, about in the case of customer service, the connection between the cover and the hob housing can also be easily solved and removed, while the cooktop housing can be supported on the pre-assembly. In this way, a customer service insert is made possible from above into the open hob housing.

In a preferred embodiment, the pre-assembly can bridge the worktop cutout. The pre-assembly is thus offset from the opening edge the worktop cut-out arranged such that a secure support of the cooktop housing is made possible in the pre-assembled state.

Preferably, the pre-assembly can be a narrow holding web or headband that can bridge the worktop cut-out, without changing flow conditions in the field of equipment underbody, which are important for proper gas cooking operation.

The worktop cutout may be limited by a peripheral decorative frame on which the cover plate can be supported in the final assembly state. The at least one pre-assembly element may extend between opposing edge strips of the decorative frame approximately in Bautiefenrichtung or in a device side direction.

The pre-assembly element can be formed of the same material and / or in one piece on the decorative frame. In terms of manufacturing technology, on the other hand, it is preferred to fasten the pre-assembly element, in particular the retaining webs on the decorative frame, for instance by a screw connection, whereby the positioning of the retaining webs can optionally be adapted to differently sized cooktop housing.

Preferably, the hob can have two pre-assembly, which are provided at a distance from each other. The two preassembly elements can be spaced apart from one another in such a way that the cooktop housing can be inserted therebetween with little play in the pre-assembly state, thereby ensuring correct positioning in the worktop cut-out.

For perfect pre-positioning, the at least one pre-assembly element can have a support surface lying approximately in a horizontal plane, on which preferably laterally opposite edge sections of the cooktop housing can be supported. The laterally opposite edge portions of the cooktop housing may be formed on the side walls, wherein the housing is formed overall trough-shaped and upwardly open.

According to one embodiment, the pre-assembly may have a run-up slope along which the hob housing can be inserted in a tilted position in the worktop cutout. In this way, an insertion movement is predetermined, which makes it possible to engage in the worktop cutout projecting wall sections of the reinforcing frame, in particular a cooktop control surface. In this way, rotary knob axes of gas flues mounted in the hob housing can be guided from below through the mounting openings of the operating surface to the top of the hob.

In the final assembly state, the cover plate and the cooktop housing connected thereto can preferably form a solid component composite, which can be supported, in particular, in loose support, in particular on the decorative frame.

According to the invention, the hob housing with its outer edge portions may not be used directly on the decorative frame of the worktop cutout, but be spaced from this over a free, heat-insulating gap. In this way, an immediate heat conduction is interrupted starting from the hob housing to the opening edge region or the DeKorrahmen.

As mentioned above, the decorative frame extends circumferentially within the worktop cutout. The decorative frame may preferably be designed to be closed and be supported with its outer edge flange on an opening edge region of the worktop cutout. The decorative frame may also have a reinforcing frame, which is covered by the decorative frame and may also be supported on the opening edge of the worktop cutout.

To mount the hob, therefore, the upwardly open hob housing is first placed on the pre-assembly and pre-positioned accordingly within the worktop cutout. Subsequently, the cover plate is placed with its edge flange on the surrounding the worktop cutout opening edge area or on the above-mentioned decorative frame. In a further step, the cover plate is then connected to the cooktop housing. In particular, a screw connection between the cover plate and the hob housing can be tightened, whereby the hob housing stands out from the pre-assembly. At a Disassembly, in contrast, the screw can be solved again, whereby the hob housing can be lowered back to the pre-assembly.

In the following, two embodiments of the invention will be described with reference to the attached figures.

Fig. 1

in einer teilweisen Schnittansicht ein Gaskochfeld gemäß dem ersten Ausführungsbeispiel im Endmontagezustand;

Fig. 2

in einer Explosionsdarstellung das Kochfeld-Gehäuse im Vormontagezustand;

Fig. 3

in einer Ansicht von oben den Arbeitsplatten-Ausschnitt mit davon beabstandetem Gaskochfeld; und

Fig. 4

eine perspektivische Teilansicht gemäß dem zweiten Ausführungsbeispiel, in der ein Montagevorgang des Gaskochfeldes veranschaulicht ist.

Show it:

Fig. 1

in a partial sectional view of a gas hob according to the first embodiment in the final assembly state;

Fig. 2

in an exploded view of the hob housing in pre-assembly;

Fig. 3

in a view from above the worktop cutout with gas hob spaced therefrom; and

Fig. 4

a partial perspective view according to the second embodiment, in which an assembly process of the gas hob is illustrated.

According to the Fig. 1 is shown in a final assembly state I gas hob in a worktop cutout 1 a worktop 3 used. The gas hob has an upwardly open, trough-shaped hob housing 4 with a circumferential raised side wall 5. The raised side wall 5 of the hob housing 3 is angled at its upper free end to the outside, so that there is a flange-like edge portion 7, which moves like a frame like the upwardly open housing opening.

In the hob housing 4, the device components of the gas hob are arranged. So is in the Fig. 1 a gas burner 8 is shown, whose burner lower part 9 is screwed by means of screw 10 to a base part 11 fixed to the housing bottom. The burner lower part 9 protrudes in accordance with Fig. 1 by a mounting opening not shown in detail in a cover plate 13 which is covered by a burner top 14. The burner upper part 14 is bolted via a further screw 15 with the interposition of the cover plate 13 with the burner base 9. That way is the entire hob housing 4 in final assembly state I alone on the screw 15 on the cover plate 13 is supported.

The cover plate 13 merges with a sloping section into a horizontally oriented outer edge 17, which is supported on a peripheral decorative frame 19. For this purpose, the decorative frame 19 has a stepped inner edge region with an inner horizontal support portion 20, on which the outer edge 17 of the cover plate 13 rests, and a lateral vertical boundary wall 21.

At the lateral boundary wall 21 of the decorative frame 19, a horizontally angled edge flange 23 connects, which is supported with the interposition of a reinforcing frame 25 on a stepped peripheral edge 26 of the worktop cut-out 1. The decorative frame 19 is in the Fig. 1 glued example by means of an adhesive layer with the reinforcing frame 25. Alternatively, a weld or screw or any other type of connection is conceivable. A parting line formed between the lowered peripheral edge 26 and the edge flange 23 is filled, for example by means of a silicone gasket 27, to produce a joint-free transition between the worktop top and the edge flange 23 of the decorative frame 19.

In the final assembly state I thus shown, the cooktop housing 4 and the cover plate 13 form a solid component composite, which rests loosely or in fixed connection on the decorative frame 19 via the edge flange 17 of the cover plate 13.

On the supported on the decorative frame 19 outer edge 17 of the cover plate 13, a pot support 29 of the gas hob is also supported.

Like from the Fig. 1 further shows, the reinforcing frame 25 in cross-section on an angle profile with a vertically projecting into the worktop cutout 1 carrying leg 31. On the vertical support leg 31 33 are screwed via screw 33 retaining bracket 35, which act as pre-assembly and of which in the Fig. 1 only one is shown. The headband 35 extend according to the Fig. 3 parallel in the Bautiefenrichtung y of the gas hob between opposite frame strips of the reinforcing frame 25, whereby the headband 35 bridge the worktop cutout 1.

The two brackets 35 are according to the Fig. 3 spaced apart by a distance a. The distance a between the two brackets 35 is dimensioned such that the cooktop housing 4 can be inserted therebetween, wherein its peripheral edge portion 7 can be supported on the two brackets 35. In this way, in the hob installation, the hob housing 4 can be stored in a suitable position in a pre-assembly II on the two brackets 35, as shown in the Fig. 2 is shown. In preassembled state II thus the cooktop housing 4 is securely supported despite still disassembled cover plate 13 on the two brackets 35.

In addition, the two brackets 35 according to the Fig. 3 spaced by an offset measure b in device side direction x of the side frame strips of the decorative frame 19. The two brackets 35 are thus located within a bounded by side furniture walls 36 base space 38, in which the gas hob housing 4 protrudes in the installed position from above. In contrast, the cover plate 13 of the gas hob is designed with a width c, with which the cover plate 13 projects beyond the side furniture walls 36 in the device side direction x.

In dashed line is in the Fig. 1 and 2 a trough clamp shown, which has a fastening bolt and optionally a spring element. The fastening bolt is screwed to a horizontal portion of the reinforcing frame 25. When screwing the mounting bolt, a spring force against the underside of the worktop can be exercised in a known manner, whereby the reinforcing frame 25 and the decorative frame 19 are securely attached to the opening edge region.

After correct position pre-positioning of the cooktop housing 4 in the Bautiefenrichtung y the cover plate 13 is placed on the support portion 20 of the decorative frame 19 in a subsequent step. Subsequently, the upper burner part 14 is screwed by means of the screw 15 and the interposition of the cover plate 13 on the burner base 19 according to the figures by way of example. While dressing the screws, the hob housing 4 is automatically raised by the vertical distance .DELTA.h from the brackets 35, as shown in the Fig. 1 is shown. In the final assembly state I, therefore, the cooktop housing 4 is no longer supported on the support brackets 35, but suspended vertically spaced from the cover plate 13 thereof.

Like from the Fig. 1 Further, thus, the hob housing is not supported directly on the reinforcing frame 25 or the decorative frame 19, but rather spaced by a heat-insulating gap 34 thereof.

For a required, for example, in case of customer service disassembly of the gas hob, first the screw 15 between the burner top 14 and the burner base 9 are solved. As a result, the hob housing 4 automatically returns to the in Fig. 2 shown pre-assembly II lowered, in which the hob housing 4 rests on the brackets 35. Anschießend the cover plate 13 can be lifted together with the burner top 14 upwards, whereby the hob housing 4 is open at the top.

In the Fig. 4 a gas hob according to the second embodiment is shown. The basic structure and operation of the headband 35 corresponds to that of the first embodiment.

Unlike the Fig. 1 to 3 the two brackets 35 on an inclined stop surface 37, which connects horizontal portions of the headband 35, which are at different height levels. In addition, the decorative frame 19 has a horizontally inwardly projecting wall portion 41, which provides an operating surface of the gas hob. In the wall portion 41 mounting holes 43 are provided in series, protrude through the gas tap shafts 45 mounted in the housing 4 gas taps 46 in the final assembly state I.

Due to the chamfers 37 of the two brackets 35 41 sufficient mounting space is provided in the region below the wall portion 41 to achieve a guided along the chamfers 37 insertion movement of the housing 4, whereby this can engage under the wall portion 41 of the decorative frame 19.

When designing the two horizontal sections located at different heights, it is important that the lower horizontal section is shorter than the upper section. In this way it can be ensured that the center of gravity of the hob lies in the region of the upper horizontal section.

LIST OF REFERENCE NUMBERS

1

Worktop cut

3

countertop

4

Hob housing

5

Side wall

7

edge section

8th

gas burner

9

Brenner base

10

screw

11

headband

13

cover

14

Burner shell

15

screw

17

Support edge of the cover plate

19

decorative frame

20

support flange

21

lateral boundary wall

23

edge flange

25

reinforcing frame

26

graduated opening edge area

27

Weld

31

vertical support leg

33

screw

34

heat-insulating intermediate space

35

headband

36

furniture wall

37

starting slope

38

basement space

39

Bracket sections

41

wall section

43

mounting holes

45

Gas tap waves

46

gas taps

I

final assembly state

II

the preinstallation

.delta.h

vertical spacing

a

distance

x

Device side direction

y

Bautiefenrichtung

b

offset dimension

c

Width of the cover plate 13

Claims (14)

1. Hob, in particular gas hob, having a hob housing (4) that is covered by a cover plate (13), wherein in a final assembled state (I), in which the hob housing (4) is suspended on or screwed onto the upper-side cover plate (13), the hob housing (4) is supported by means of the cover plate (13) in the vicinity of a work-surface section (1), characterised in that the hob has at least one pre-assembly element (35) on which the hob housing (4) can be supported, independently of the cover plate (13).
2. Hob according to claim 1, characterised in that the pre-assembly element (35) bridges the work-surface section (1), in particular in a depthwise direction (y).
3. Hob according to claim 1 or 2, characterised in that the pre-assembly element (35) is a narrow retaining bracket.
4. Hob according to one of the preceding claims, characterised in that in the final assembled state (I) the hob housing (4) is spaced apart from the pre-assembly element (35) by a vertical distance (Δh) and in particular is mounted on the cover plate (13).
5. Hob according to one of the preceding claims, characterised in that the hob has a decor frame (19, 25) which, in an installation position, delimits the work-surface section (1) and/or on which the cover plate (13) is supported in the final assembled state (I).
6. Hob according to claim 5, characterised in that the pre-assembly element (35) connects opposing frame strips of the decor frame (19, 25) to each other.
7. Hob according to one of claims 5 or 6, characterised in that the pre-assembly element (35) is embodied on the decor frame (19), and in particular is affixed thereto as a separate component, for instance by a screw connection (33).
8. Hob according to one of the preceding claims, characterised in that two pre-assembly elements (35) are disposed at a distance (a) to each other, said distance (a) in particular being measured such that the hob housing (4) can be inserted in between and/or can be supported thereon by means of a housing-side edge section (7).
9. Hob according to one of claims 5 to 8, characterised in that the decor frame (19) has a wall section (41) that partially covers the hob housing (4) in the final assembled state (I), and in that the pre-assembly element (35) is embodied with a sloped edge (37), along which the hob housing (4) can be inserted in a tilted position into the work-surface section (1) below the wall section (41), in order to extend below the wall section (41) projecting into the work-surface section (1), in particular a control panel of the hob.
10. Hob according to one of the preceding claims, characterised in that in the final assembled state (I) the cover plate (13) and housing (4) together form a composite component that can be supported in particular when loosely positioned.
11. Hob according to one of the preceding claims, characterised in that in the final assembled state (I) the hob housing (4) is spaced apart from the opening edge area of the work-surface section (1), in particular from the decor frame (19), by an empty, heat-insulating space (34).
12. Hob according to one of claims 5 to 11, characterised in that the decor frame is embodied in two parts with an upper-side frame element (19) and a bracing frame element (25).
13. Hob according to one of the preceding claims, characterised in that in an appliance side direction (x) the at least one pre-assembly element (35) is spaced apart from the lateral edge of the work-surface section (1), in particular from the lateral frame strips of the decor frame (19, 25), by an offset (b).
14. Method for assembling a hob embodied according to one of the preceding claims, in which in a pre-assembly state (I) the hob housing (4) is pre-positioned on the pre-assembly element (35) and in a subsequent step a cover plate (13) is supported in the work-surface section (1), wherein for a final assembled state (II) the cover plate (13) is then connected to the hob housing (4).

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