WO2013026767A1 - Gas hob - Google Patents

Abstract

In order for a gas hob (100) with an interior which is enclosed by a hob-covering panel (10) and a hob-base panel, wherein at least one air opening (40) is arranged for feeding supply air from above the hob-covering panel (10) into the interior of the gas hob (100) and/or for discharging exhaust air from the interior of the gas hob (100) in the region of the hob-covering panel (10), to be developed such that the channelling of air in the gas hob is optimized and the gas hob is protected as best as possible against the ingress of extraneous particles or liquids, it is proposed that - at least one grate (30), which is designed for carrying at least one food container, is arranged above and/or on the hob-covering panel (10) and - the air opening (40) is concealed by the grate (30).

Description

 Gas hob

Technical area

The present invention relates to a gas hob according to the preamble of claim 1 (= DE 197 03 301 A1), a method for producing a gas hob according to the preamble of claim 12 and a gas cooking appliance according to the preamble of claim 14.

State of the art

Gas cooking appliances can be heated by gas radiant burners or by atmospheric gas burners. Radiant gas burners are disposed below a common cooktop panel while atmospheric gas burners, i. H. Burner with open flame, integrated in the hob cover plate. Accordingly, the primary air necessary for combustion is supplied to gas radiant burners and to atmospheric gas burners according to two different principles. While in gas radiation burners, the supply of the primary air takes place together with the gas supply, atmospheric gas burners draw the primary air from the hob housing or from the vicinity of the gas hob, in particular from the space above the gas hob. To optimize the air flow in the gas hob, gas hobs usually have at least one air opening. In gas hobs with atmospheric gas burners, the air vent is a supply air inlet and serves to supply the primary air needed for combustion to the burner. In gas hobs with radiant gas burners, the air opening is an exhaust air outlet opening and serves to dissipate the exhaust air formed during operation of the gas radiation burners.

From the publication JP 2005 24 1 1 25 A is known to provide for discharging the exhaust air or for supplying the primary air louvers in the front, the controls of a gas cooking appliance near range. The disadvantage, however, that can get through these louvers contaminants or liquids in the interior of the gas cooking appliance. In the publication JP 1 1 24 81 67 A is disclosed to provide a slanted control panel of a gas cooking appliance covered air supply slots. Although the cover of the air slots prevents liquids can get into the interior of the gas cooking appliance, but complicates the cleaning of the control bar.

Furthermore, from the documents US 2004 01 778 41 A1, DE 195 05 469 C1 and

DE 197 03 301 A1 discloses the air supply or the air discharge at a

Gas hob through slots at the back to make. The arrangement of the air openings on the side facing away from the operator side of the back of the gas hob reduces the risk of liquid entering the interior of the hob.

Thus, in the gas hobs known from the documents US 2004 01 778 41 A1 and DE 195 05 469 C1, the air opening is formed by a distance of the hob cover plate to the frame construction of the gas cooking appliance or to a control unit of the gas cooking appliance. In these known gas cooking appliances is thus for supplying primary air to the atmospheric gas burner on cooking surface plane, d. H. either between the cooktop panel and the associated frame construction (see US 2004 01 778 41 A1 Fig. 2, 7, 8 and DE 195 05 469 C1 Fig. 1) or between the cooktop panel and an angled control panel (see DE 195 05 469 C1 Fig. 2) provided an elongated opening for the air supply. In order to avoid the entry of liquids through this air opening, the air opening is covered by a hood-shaped cover according to the publications US 2004 01 778 41 A1 and DE 195 05 469 C1. However, this design of the primary air supply has the disadvantage that only a relatively small overflow volume can be collected, so that the risk can not be ruled out that overflowed through the air opening cooking material enters the hob interior and can cause pollution to the electronics or electrical system located therein ,

In order to form openings for the primary air supply of an atmospheric gas burner safely protected against overflowing cooking in a gas cooking appliance, the publication DE 197 03 301 A1 proposes to arrange the openings for Primärluft- supply to the upper edge of a located on the rear side of the hob cover plate bevel. However, these openings are visible to the user of the gas hob. Furthermore, there is also this, open at the top Luftansaugöffnungen the risk of ingress or permeation of liquids, such as cleaning materials or spraying cooking.

DESCRIPTION OF THE INVENTION: OBJECT, SOLUTION, ADVANTAGES Based on the disadvantages and inadequacies set out above and on appreciation of the state of the art outlined, the object of the present invention is a gas hob of the type mentioned at the outset and a gas cooking appliance of the type mentioned at the outset as well as a process for the production of a gas hob of the type mentioned in such a way that the air duct is optimized in the gas hob and the gas hob is best possible protected against the ingress of foreign particles or liquids.

This object is achieved by a gas hob with the features specified in claim 1, by a method having the features specified in claim 12 and by a gas cooking appliance with the features specified in claim 14. Advantageous embodiments and expedient developments of the present invention are characterized in the subclaims.

Thus, the present invention is based on the fact that above and / or on the hob cover plate at least one designed to carry at least one Gargutbehälter pot carrier is arranged, which covers the air opening. By means of the pot carrier arranged above the air opening, the view into the interior of the gas hob is completely covered and the air opening is reliably protected against the ingress of dirt, overflowing or spattering cooking material and cleaning media.

To allow air to flow from above the cooktop cover plate to the air opening, the pan support is advantageously arranged at a defined distance above the cooktop cover plate. The distance between the hob cover plate and the pot carrier can be defined by means of at least one spacer element. By arranged between the hob cover plate and the pot carrier spacer results between the hob cover plate and the pot carrier a gap through which the supply air into the interior of the gas hob can be performed and / or the exhaust air from the

Interior of the gas hob can be brought out. Advantageously, the spacer element is integrated in the pot carrier. The air opening can therefore be covered by a specially shaped pot carrier.

For example, for easier cleaning of the gas hob, in particular the

Hob cover plate, the pot carrier can be removable.

According to a particularly advantageous embodiment of the invention, the air opening to the operating side of the hob cover plate is open. The air opening in the hob cover plate thus opens advantageously forward, in the direction of the user. This has the advantage that, in contrast to known gas hobs on the back of the gas hob, no air opening is visible. Looking at the gas hob from its back, the gas hob seems to be closed. This is particularly advantageous if the gas hob is part of a designed as a freestanding kitchen island gas cooking appliance. By opened to the operating side of the hob cover plate opening angle of the air opening of the air flow in the gas hob, so supplying fresh air into the interior of the gas hob and / or the discharge of exhaust air from the interior of the gas hob, significantly improved. Thus, the possibility of the supply air opening from above the cooking surface level or from above the hob cover plate into the interior of the gas hob leads to a very positive effect on the European standard, so-called door slam test.

The open to the operating side of the hob cover plate opening angle of the air opening can be formed by means arranged in the region of the air opening tab. This tab is used to guide the supply air and / or the exhaust air and optimizes the air flow in the gas hob. Further, the tab prevents even with removed pot carrier that can be seen through the air vent in the interior of the gas hob and protects the air vent against the ingress of foreign particles or liquids. As the opening angle in the present case of the two mentioned below

Connecting lines formed angle, namely the angle between

the connecting line of the side facing away from the operating edge boundary of the tab and the operating side facing edge boundary of the tab (this connecting line is in the plane of the tab) and - The connecting line of the side facing away from the operating edge boundary of the tab and the operating side facing upper, ie the inside of the

Gas hob facing away, boundary of the air opening.

In this case, the opening angle of the air opening may be open exclusively to the operating side of the hob cover plate or else partially downwards, ie towards the interior of the gas hob, be inclined. Furthermore, it is possible that the

Opening angle partially upward, that is away from the interior of the gas hob, is inclined.

According to an advantageous embodiment of the invention, the tab is inclined relative to the cooking surface. The tab can thus also be referred to as an inclined air guiding element, for example an inclined air guide plate.

In this advantageous embodiment of the invention, the air opening is formed by means of a substantially rectangular contour in the hob cover plate, wherein

- Only the top of the hob bottom plate facing away from the upper edge boundary of the rectangular contour is severed and

 the remaining area of the rectangular contour which forms the tab is tilted by a defined angle in the direction of the interior of the gas hob.

In this case, the axis of rotation about which the tab is tilted along one of the

Hob bottom plate facing lower edge boundary of the tab. The angle around which the tab is tilted serves the improved airflow.

So that even with the pot support can not be seen through the air opening in the interior of the gas hob and the air opening is best protected against the ingress of liquid, the air opening is not cut completely free according to this advantageous embodiment of the invention. For this, only the upper edge of the rectangular cut line is really severed and preferably in the same

Work step is then deformed with a correspondingly shaped tool along the bottom and side cutting line inward. This forms the tab through which the air can be sucked in and / or blown out. At the same time, the tab prevents insight into the interior and prevents ingress of large quantities of liquid, for example by cleaning. A trend in the gas well segment is currently to bring particularly flat gas hobs on the market. The height of the gas hob above the hob area or above the worktop should be as low as possible. A flush completion of the gas hob with the cooking field level or with the worktop, a so-called piano a filio, but is not required. In order to keep the height of the gas hob as low as possible, very shallow gas burners, so-called flat burners, are used. However, these flat burners necessarily require your primary air supply from above the hob cover plate. The present invention shows a solution for a hidden, invisible air intake from the top of the hob cover plate and thus allows the use of a flat burner in the gas hob. The air supply is improved but also in conventional atmospheric burners. The gas hob according to the present invention can have a very low height by the use of at least one designed to heat at least one gas hob of the gas hob flat burner. Due to the design of flat burners, the air must be supplied from the top of the gas hob. The best position for sucking in clean air that is not mixed with exhaust gases is as far as possible from the gas burners or the flames in the case of a gas hob. In a preferred embodiment of the present invention, therefore, the air opening is arranged on the rear side of the cooktop cover plate, more precisely on a sloping region of the rear side of the cooktop cover plate which projects out of the cooking surface plane. At this position, the risk of liquid entry is also lower and ensures the passage of air into the bottom trough of the trough. The cooktop panel may be made, for example, by means of at least one deep-drawing process. The type of air vent described above can generally be used in all gas hobs with steel top sheet or with a thermoformed hob plate. Brief description of the drawings

As already discussed above, there are various possibilities for embodying and developing the teaching of the present invention in an advantageous manner. For this purpose, on the one hand to the claim 1, the claim 12 and the claim 14th refer to other subordinate claims, on the other hand further embodiments, features and advantages of the present invention will be explained below, inter alia, with reference to the embodiment illustrated by the figures 1 to 10. It shows:

1 is a perspective view of a plan view of an exemplary embodiment of a

Gas hob according to the present invention;

Fig. 2 in perspective view of the gas hob of Figure 1 in one

Cleaning situation in which one of the two pot carriers is removed;

Fig. 3 in perspective view of the gas hob of Figure 1 in one

Cleaning situation in which both pot carriers are removed;

4 is a perspective view of a single view of the hob cover plate of

Gas hob of Figure 1;

5 is a perspective view of a detailed view of the air openings of the

Gas hob of Figure 1;

Fig. 6 in a schematic longitudinal sectional view of the gas hob of Figure 1, wherein the

Section line corresponds to the line B-B shown in Figure 2;

FIG. 7 is a perspective view of a rear view of the gas hob of FIG. 1; FIG.

 Fig. 8 is a perspective view of a view of the top of the pot carrier of

Gas hob of Figure 1;

9 is a perspective view of a bottom view of the pot carrier of

Gas hob of Figure 1 and

10 is a detailed view of the back of the gas hob of Figure 1, wherein the gap between the hob cover plate and the pot carriers is marked.

Identical or similar embodiments, elements or features are provided in FIGS. 1 to 10 with identical reference numerals.

Best way to carry out the invention

Figure 1 shows an embodiment of a gas hob according to the present invention, which is made by the method according to the present invention. The gas hob has an interior surrounded by a steel cooktop panel 10, a so-called top sheet, and a cooktop panel, a so-called bottom sheet. In Figure 4, the hob cover plate 10 without attachments, ie without controls and without pan support 30, shown. For supplying supply air into the interior of the gas hob, slot-shaped air openings 40 are arranged on the upper side of the gas hob, more precisely on the rear side 14 of the hob cover plate 10. These air openings 40 serve as air inlets for supplying supply air in the interior of the gas hob

arranged venturi nozzles of trained for heating the gas hobs of the gas hob flat burners.

Since the air openings 40 are arranged on the rear side 14 of the hob cover plate 10, particularly flat gas burners can be used for heating the gas hobs, which require your primary air design reasons from above the cooking field level.

As illustrated, for example, in FIGS. 3 and 5, the air openings 40 are arranged in an oblique region 60 of the rear side 14 of the cooktop cover plate 10 which projects out of the cooking surface plane and faces the operating side. This has the advantage that the vent openings 40 are not visible from the back of the gas hob. Figures 7 and 10 show a view of the back of the gas hob 100, wherein in Figure 7, the arrows mark the air flow. Except for a small slit or gap 20, no air intake opening is visible at the rear of the gas hob 100. If one thinks of a mounting situation in a freestanding kitchen island, one does not have like at

Gas hobs from the prior art free view of the air intake and thus a high aesthetic gain.

FIG. 5 shows a detailed view of the air openings 40. In the area of the air openings 40, a tab 50 designed to guide the supply air is arranged in such a way that the air opening 40 opens an opening 22 for the hob cover plate 10

Has opening angle (see Figures 5 and 6). This tab serves to improve the air flow, prevents the view into the interior of the gas hob and the penetration of dirt particles into the interior of the gas hob. The air opening 40 is integrated into the hob cover plate 10 and both the tab 50 and the air opening 40 bounding edge boundaries 42, 52, 54 are formed by the hob cover plate 10. Thus, there are no overlapping areas with corners and edges in the area of the air opening. The air opening 40 is formed by means of a substantially rectangular contour in the

 Hob cover plate 10 is formed. In this case, the air opening 40 can be particularly easily integrated into the hob cover plate 10 by only the upper edge of the air opening is severed and in the same step, along the bottom and side cut line with a suitably shaped tool, the tab 50 is formed inwardly.

Because of the tab 50, each air opening 40 has at least three boundary openings 42, 52, 54 delimiting the air opening 40 and arranged vertically offset from one another

 - A facing away from the hob base plate 20 upper edge boundary 42, one of the hob bottom plate 20 facing the lower deckle 54 and disposed between the upper deckle 42 and the lower deckle 54 middle deckle 52. The tab 50 extends from the lower deckle 54 to the middle

Deckle 52 and is inclined so that the distance of the middle

Edge boundary 52 to the operating side 12 of the hob cover plate 10 is greater than the distance of the lower deckle 54 to the operating side 12 of the hob cover plate 10. The angle of inclination of the tab 50 serves the improved air flow.

The highlighting out of the cooking field level area 60 extends obliquely from the

Operating side 12 of the gas hob off. thats why

 the distance of the middle edge boundary 52 to the operating side 12 of the

 Hob cover plate 10 larger than the distance of the upper edge boundary 42 to the operating side 12 of the Hob cover plate 10 and

 the distance of the upper edge boundary 42 to the operating side 12 of the

Hob cover plate 10 larger than the distance of the lower deckle 54 to the operator side 12 of the hob cover plate. As shown in Figs. 1, 2 and 7, they are opened forward

Air inlets 40 hidden by pot carrier 30. The pot carriers 30 cover the

Air intake openings 40 complete and prevent the ingress of liquids during the cooking process, especially when overcooking and spraying. Figure 2 shows the gas hob of Figure 1, wherein a pot carrier 30 is removed. The pot carrier 30, for example, for cleaning the hob cover plate 10th

be removed. When the pot carrier 30 is removed, the air inlets 40 are visible (compare FIGS. 2 and 3). FIG. 8 shows a view of a pot carrier 30 from above, that is to say the side facing away from the hob cover plate 10 of the pot carrier 30. In FIG. 9, the side of the pot carrier 30 facing the hob cover plate 10 is shown. In the gas hob shown in Figures 1 to 10 30 distance elements or distance stops 32 are arranged between the hob cover plate 10 and the pot carriers. By means of these distance stops 32, a gap 20 is produced between the hob cover plate 10 and the pot carriers 30 (cf., FIGS. 7 and 10), through which the supply air is guided into the interior of the gas hob (100). More precisely, there remains a gap 20 in the area of the air intake opening 40 by the spacing stops 32 in the pot carrier (see FIG. By means of this gap 20, the air can pass from the outside through the air openings 40 of the top sheet 10 in the bottom tray and feed the burner with primary air from above. In FIG. 6, the course of the air flow from the upper side of the gas hob 100 into the hob bottom plate or bottom pan is marked by means of an arrow. FIG. 6 is a sectional view of the gas hob of FIG. 1, wherein the section line corresponds to the line B-B shown in FIG.

In the embodiment described above, the air openings 40 are inlet air inlets. In the gas hob according to the invention, however, the air openings 40 can also serve as exhaust air outlet openings. This is useful, for example, when using radiant gas burners. LIST OF REFERENCE NUMBERS

100 gas hob or gas hob

 10 hob cover plate or so-called top sheet, in particular the upper shell of the gas hob

12 operating side of the hob cover plate 10

 14 Rear side of the hob cover plate 10

 20 gap between hob cover plate 10 and pot carrier 30th

 30 pot carrier, in particular removable pot holder

 32 spacer or distance stop

34 support strip of the pot carrier 30

 40 air opening, in particular exhaust air outlet opening and / or supply air inlet opening

42 upper edge boundary of the air opening 40

 50 tab, in particular air baffle

 52 middle boundary of the air opening 40, in particular of the

 Hob base plate 20 facing away from the upper edge of the tab 50th

 54 lower edge boundary of the air opening 40, in particular the

 Hob bottom plate 20 facing lower edge of the tab 50th

60 obliquely extending from the hob field oblique area of

 Hob cover plate 10

70 Gas burner, in particular head of the gas burner

Claims

A gas hob (100) having an interior surrounded by a cooktop cover plate (10) and a cooktop bottom plate, wherein for supplying supply air from above the cooktop cover plate (10) into the interior of the gas cooktop (100) and / or for discharging exhaust air from the Interior of the gas hob (100) in the region of the hob cover plate (10) at least one air opening (40) is arranged, characterized in that  at least one pot carrier (30) designed to carry at least one food container is arranged above and / or on the hob cover plate (10) and  the air opening (40) is covered by the pot carrier (30). Gas hob according to claim 1, characterized in that  the hob cover plate (10) has an operating side (12) and one of the Operating side (12) facing away from back (14) and  the air opening to the operating side (22) of the hob cover plate (10) is opened. Gas hob according to claim 2, characterized in that the air opening (40) on the back (14) of the hob cover plate (10) is arranged. Gas hob according to claim 2 or 3, characterized in that  the cooktop cover plate (10) at its rear side (14) extending from the  Kochfeldebene lifting oblique area (60) and  the air opening (40) is arranged in this oblique region (60) of the hob cover plate (10). Gas cooking field according to at least one of claims 1 to 4, characterized  in that the air opening (40) is integrated in the hob cover plate (10), in particular formed by a slot-shaped recess of the hob cover plate (10). 6. gas hob according to any one of claims 1 to 5, characterized characterized in that the pot carrier (30) is removable. 7. gas hob according to any one of claims 1 to 6, characterized  characterized in that the air opening (40) by means of a substantially  rectangular contour in the hob cover plate (10) is formed, wherein  only the upper edge boundary (42) facing away from the hob base plate is cut through the rectangular contour and  the remaining area of the rectangular contour, which forms a tab (40) and which is designed to optimize the air duct in the interior of the gas hob, by a defined angle in the direction of the interior of the gas hob (100) is tilted, wherein the axis of rotation to which the Tab (50) is tilted, along one of the cooking plate bottom plate facing the lower edge boundary (54) of the tab (50) extends. 8. gas hob according to any one of claims 1 to 7, characterized  in that at least one spacer element (32) is arranged between the hob cover plate (10) and the pot carrier (30), which defines a distance between the hob cover plate (10) and the pot carrier (30), wherein the distance between the hob cover plate (10 ) and the pot carrier (30) results in a gap (20) through which the supply air is guided into the interior of the gas hob (100) and / or the exhaust air is led out of the interior of the gas hob (100). 9. gas hob according to claim 8, characterized in that the  Distance element (32) in the pot carrier (30) is integrated. 10. Gas hob according to at least one of claims 1 to 9, characterized by at least one for heating at least one gas hob of the gas hob gas burner (70), in particular flat burner, wherein the air opening (40) is designed for supplying supply air from above the hob cover plate for flat burner , 1 1. gas hob according to any one of claims 1 to 10, characterized  characterized in that the hob cover plate (10) by means of at least one Deep drawing process is made. 12. A method for producing a gas hob (100) having an interior, which is surrounded by a cooktop cover plate (10) and a cooktop plate, wherein for supplying supply air from above the cooktop cover plate (10) in the  Interior of the gas hob (100) and / or for discharging exhaust air from the interior of the gas hob (100) in the region of the hob cover plate (10) at least one air opening (40) is arranged,  characterized in that  above and / or on the hob cover plate (10) at least one pot carrier (30) designed to carry at least one food container is arranged, and  the air opening (40) is covered by the pot carrier (30). 13. The method according to claim 12, characterized in that the air opening is formed by means of a substantially rectangular contour in the hob cover plate (10), wherein  only the upper edge boundary (42) of the rectangular contour facing away from the hob bottom plate is severed and  - The remaining area of the rectangular contour, through which a tab (50) is formed and which is designed to optimize the air flow in the interior of the gas hob, by a defined angle in the direction of the interior of the gas hob (100) is tilted, wherein the axis of rotation, around which the tab (40) is tilted, along one of the hob bottom plate facing the lower edge boundary (54) of the tab (50) extends. 14. Gas cooking appliance comprising a gas hob according to at least one of  Claims 1 to 1 1, which is prepared by the method according to claim 12 or 13. 15. Gas cooking appliance according to claim 14, characterized in that the  Gas cooker is a freestanding kitchen island.