EP2413038A1 - Gas cooking area - Google Patents

Abstract

The cooktop (1) has a gas burner (3) arranged in a cooktop plate (2), which comprises an opening (12) for primary air supply to the gas burner. The opening is covered by a lid (13) that covers another opening in a closing position by electromagnets. The lid uncovers the latter opening in an opening position by a spring element. The spring element and the electromagnet are equipped in such a manner that restoring force of the spring element and retaining force of the electromagnets act against each other. The lid forms an even surface in the closing position.

Description

The present invention relates to a gas cooking surface with gas burners and a primary air supply for the gas burners.

In gas cooking surfaces, which are designed for example as hobs or used as built-in cooking surfaces, for example in countertops, must be provided to ensure a reliable combustion of the gas, a sufficient primary air supply. In known stoves with gas hobs, the primary air supply takes place for example from below or to the side of the housing of the stove. In particular, in built-in cooking surfaces, which should have as smooth as possible conclusion with a worktop, the volume below the cooking surface are usually closed and do not allow without additional measures sufficient primary air.

In the past, therefore, for example, as in the US 2004/0177841 A1 described, provided with profiles covered openings in the cooking surface top, so that air can penetrate into the area below the cooking surface and is burned as primary air with the gas burner. From the DE 10 2008 017 398 A1 a gas hob is known, wherein the cooktop or hob plate is provided with air openings on one longitudinal side to achieve the primary air supply. These known measures are partially aesthetically not appealing and can also complicate the cleaning of the hob, since cleaning agents can pass through the openings in the interior of the gas hob.

It is therefore an object of the present invention to provide an improved gas cooking surface.

This object is achieved by a gas hob with the features of claim 1.

Accordingly, a gas hob is proposed, which surrounds a cooktop plate and at least one arranged in the cooktop plate gas burner. The hob plate has at least one coverable by a cover opening for the primary air supply for the gas burner. In this case, the lid covers the opening in a closed position held by means of an electromagnet and the lid releases the opening in an open position by means of a spring element.

By the lid, which may be embodied for example as a rectangular plate, it is on the one hand possible to complete the hob stove aesthetically, without, in particular in a closed position, the opening is visible. This also facilitates the cleaning of the hob plate and the gas hob as a whole. During operation of the gas burner, the flap can be moved, for example by a spring as a spring element, thereby releasing the opening in the cooking plate, so that primary air can penetrate into the area below the cooking plate.

Preferably, the plate opens in the open position upwards. Thus, primary air can penetrate from above the cooktop plate in the interior of the gas hob or below the cooktop plate and be reliably guided to the one or more gas burners.

In one embodiment, the lid is held in the closed position by means of a latching mechanism. A lock, which is supported in particular by an electromagnet, a reliable completion of the opening can be achieved in the closed position. It is conceivable, for example, that after using the gas hob, the operator displaces the lid from its open position against the spring force of the spring element into the closed position and, with the aid of the latching mechanism and the electromagnet, remains there.

In one embodiment of the gas hob, the spring element and the electromagnet are arranged such that a restoring force of the spring element and a holding force of the electromagnet act in opposite directions. During operation of the gas burner, the cover, which is designed, for example, as a flap, is then pushed upwards by the spring and remains in the open position. After use, the flap is moved to the closed position and held there by a magnet, in particular electromagnet.

It is conceivable that a control element for the gas burner, such as a control knob or knob is coupled via operative connection to the electromagnet. Then, when switching the gas burner on, for example, a control signal can be sent from the operating element to the electromagnet, whereupon the latter releases the cover and the cover is displaced by the spring element into its open position. The movement of the lid by the spring element may in particular be damped, so that a slow harmonic movement during opening or opening operation of the lid is achieved.

Further, in another embodiment, the gas hob may include an ignition unit for initiating an ignition operation for the gas burner. Then preferably the ignition unit or a control element for the ignition unit is coupled via operative connection with the electromagnet. The gas hob is then preferably set up so that when the ignition process is triggered, the electromagnet is actuated and releases the lid from the closed position. This ensures that at the beginning of the firing sufficient primary air passes through the opening in the hob plate to the burner.

The gas hob can be configured such that the hob plate comprises a plurality of openings which can be covered by the lid. Of course it is also possible to equip the gas hob with several lids. As materials for the lid, aluminum, steel, glass or glass ceramic have proven suitable. However, other materials are conceivable, for example, can still be provided with a paint surface to meet all aesthetic requirements.

Preferably, the lid forms a flat surface in the closed position with the hob plate. As a result, a particularly easy cleaning of the gas hob is achieved. Optionally, the gas hob can be equipped with a sealing element, which is provided in the closed position between a bearing surface of the opening and the lid. The sealing element, such as a sealing ring, provides a sealing seal between the cover and the bearing surface.

In an alternative embodiment of the gas hob, the lid is guided perpendicular to the hob plate in the opening. For example, in the manner of a stamp of the Cover are driven vertically up and down, with the spring action of the spring element drives the lid at an opening movement, and when closing, for example, the lid is manually pressed down.

In a preferred embodiment of the gas hob, the lid is designed in the manner of a cover flap with a hinge. The hinge has a hinge axis. Through a cover, different geometries can be realized and in particular cover several openings.

In one embodiment, the lid is at least during an opening movement from the closed position to the open position carried out such that initially takes place a movement perpendicular to the hob plate and then a rotational movement of the lid about the hinge axis. It is possible to achieve a particularly appealing movement when opening the primary air supply.

Alternatively, the lid may also be guided at least during an opening movement from the closed position to the open position such that initially a movement takes place parallel to the hob plate and then a rotary movement of the lid about the hinge axis.

The hinge axis is preferably arranged between the opening and controls for the gas hob. This results in a unfolding of the lid designed as a cover such that the operator looks at the surface of the cover and does not recognize the opening. The opening is preferably provided on a wall side of the built-in gas hob and therefore at the distal of the front of the hob.

The lid may be attached to at least one hinge arm with the hinge arm gripping through the opening. By this embodiment, the hinge axis can also be arranged below the hob plate and the cover describes a kind of arc in the direction of the operator of the hob.

Further possible implementations of the invention also include combinations which have not been explicitly cited, described above or below with regard to the exemplary embodiments Features. The expert will also add individual aspects as improvements or additions to the respective basic shape of the pot carrier or the cooking area.

Further advantageous embodiments and aspects of the invention are the subject of the dependent claims and the embodiments of the invention described below. Furthermore, the invention will be explained in more detail by means of preferred embodiments with reference to the attached figures.

Figur 1:

eine Darstellung einer ersten Ausführungsform eines Gaskochfeldes in der Draufsicht;

Figur 2:

eine schematische Darstellung einer ersten Ausführungsform einer Primärluftzufuhrklappe eines Gaskochfeldes im Querschnitt;

Figur 3:

eine schematische Darstellung einer zweiten Ausführungsform einer Primärluftzufuhrklappe eines Gaskochfeldes im Querschnitt;

Figur 4:

eine perspektivische Darstellung einer dritten Ausführungsform einer Primärluftzufuhrklappe eines Gaskochfeldes;

Figur 5:

eine perspektivische Darstellung einer vierten Ausführungsform einer Primärluftzufuhrklappe eines Gaskochfeldes;

Figur 6:

eine schematische Darstellung zur Erläuterung eines ersten Bewegungsablaufs einer Primärluftzufuhrklappe eines Gaskochfeldes; und

Figur 7:

eine schematische Darstellung zur Erläuterung eines zweiten Bewegungsablaufs einer Primärluftzufuhrklappe eines Gaskochfeldes.

It shows:

FIG. 1:

a representation of a first embodiment of a gas hob in the plan view;

FIG. 2:

a schematic representation of a first embodiment of a primary air supply flap of a gas hob in cross section;

FIG. 3:

a schematic representation of a second embodiment of a primary air supply flap of a gas hob in cross section;

FIG. 4:

a perspective view of a third embodiment of a primary air supply flap of a gas hob;

FIG. 5:

a perspective view of a fourth embodiment of a primary air supply flap of a gas hob;

FIG. 6:

a schematic representation for explaining a first movement of a primary air supply flap of a gas hob; and

FIG. 7:

a schematic representation for explaining a second movement of a primary air supply flap of a gas hob.

In the figures, identical or functionally identical elements are provided with the same reference numerals, unless stated otherwise.

FIG. 1 shows a first embodiment of a gas hob in the plan view. The gas hob 1 comprises a hob plate 2, which is designed for example of glass or glass ceramic, but can also be made in particular of metal. In openings of the hob gas burners 3, 4, 5, 6 are used. Each gas burner 3, 4, 5, 6 is associated with an ignition unit 22, each of which can initiate an ignition process via control elements 7, 8, 9, 10 for the gas burners 3, 4, 5, 6 controlled. The control knobs or knobs 7, 8, 9, 10 are arranged in a front, the operator-facing control panel 11.

In order for primary air to reach the gas burners 3, 4, 5, 6 from the top of the gas hob 1, an opening 12 is provided in the hob plate 2. The opening 12, which is shown in dashed lines, is covered by a cover 13, which may for example be designed as a cover plate.

The FIGS. 2 and 3 schematically show possible embodiments for corresponding Primärluftzuführklappen in cross section. The FIG. 2 shows a first embodiment of a lid for an opening in the hob plate as a cover flap. One recognizes in the FIG. 2A first the hob plate 2, which is broken by an opening 12. The opening 12 is covered by an example rectangular cover flap 13 in a closed position. The cover flap is arranged rotatably about a hinge axis 17. That is, it can be brought to an opening position by being rotated about an edge adjacent to the hinge axis 17. This is in the FIG. 2B shown. In the orientation of FIG. 2 For example, a control panel is arranged for an operator on the right side. An opening gap resulting from the folding up or turning about the hinge axis 17 of the flap 13 is thus remote from the operator or the operator. Often, the hob is installed on a wall, so that, for example, in the orientation of the FIG. 2B left side, can connect to a vertical wall.

The FIG. 3 shows a schematic representation of a second embodiment of a cover for a primary air supply opening in cross section. One recognizes in the FIG. 3 , the perforated hob plate 2 from an opening. The opening is closed, for example, by a round stopper, punch or pin 14. The hob plate 2 and the Surface of the designed as a plug or stamp lid 14 just close. It shows the FIG. 3A a closed position and the FIG. 3B an opening position of the lid 14. In the open position, which can be achieved, for example, by spring force and movement of the lid up, resulting openings between the top of the hob plate 2 and the underside of the hob plate 2, so the interior of the corresponding gas hob. In the embodiment of the FIG. 3 the lid or punch or plug 14 is moved perpendicular to the plane of the hob plate 2. This results in openings and air channels for the primary air PL.

In the FIGS. 2 and 3 is, although not explicitly shown, provided that the closed position is held by means of an electromagnet and the opening position is achieved by means of the spring action, for example, a spring element. In both cases, an operator after use of the gas burner or the gas cooking surface, the cover flap 13 or stamp 14 running lid from the open position in the FIGS. 2B, 3B back to its closed position, cf. FIGS. 2A, 3A , offset.

The FIG. 4 shows a perspective view of a third embodiment of a Primärluftzuführklappe a gas hob. The embodiment which in the FIG. 4 is shown, comprises a multi-part cover flap 13 with a holding plate 13A and a cover plate 13B. The cover plate 13B may be embodied, in particular, in the same material as the cooktop panel, which is not completely shown here, in which gas burners and, for example, pan supports are used.

The FIG. 4 shows a section of the hob plate 2, which has three substantially oval openings 12A, 12B, 12C. In order that a particularly tight seal between the cover plate 13 or the holding plate 13A, the cover plate and the hob plate 2 can be achieved, sealing elements 20A, 20B, 20C are provided. The sealing elements 20A, 20B, 20C may for example be made of heat-resistant plastic such as Teflon material. The sealing rings are in the closed state between the holding plate 13 A and a peripheral edge region around the openings 12 A, 12 B, 12 C of the hob plate. 2

The opening and closing movement of the cover plate 13A, 13B is substantially determined by a hinge mechanism. These are two with the reference numeral 18 provided hinge arms rotatably provided about a respective hinge axis 17. The hinge arms 18 pass through the openings 12A and 12C and are secured to the support plate 13A. There is a respective spring mechanism coupled to the hinges, which have a spring 15 in the orientation of the FIG. 4 indirectly generates a spring force on the hinge arms 18 and thus the holding plate 13A. The spring force is acting in an upward direction.

Further locking means or locking mechanisms 21 are provided, which fix the holding plate 13A in a closed position, so sealingly on the hob plate 2, in interaction with an electromagnet 16. When operating or igniting the corresponding gas burner, the solenoid 16 is released, so that in an opening movement, the hinge arms 18 engage from below through the openings 12A, 12C and push the cover plate 13 upwards. This allows primary air to reach the gas burners through the openings 12A, 12B, 12C from above to the burners.

The FIG. 5 shows a perspective view of a fourth embodiment of a primary air supply door for a gas hob.

The in the FIG. 5 illustrated embodiment of a primary air supply flap has a round cross-section, which can be used in a round, for example, circular opening of a hob plate. The FIG. 5 shows an insert 19 configured as a sleeve, which in a in the FIG. 5 not shown primary air supply opening can be introduced. In the insert, a sealing element 20 is used. The in the FIG. 5 illustrated cover flap 14 has, for example, made of plastic holding plate 14A, to which, in particular for aesthetic considerations out, a metal cover 14B, is attached.

The FIG. 5 further shows a hinge part 23, to which the holding plate 14A is fixed in the assembled state. Further, a coil spring 15 is provided as a spring member which is coupled to the hinge part 23 and produces a spring action such that the support plate 14A is pushed up with the cover plate 14B.

Furthermore, in the FIG. 5 an electromagnet 16 is shown in the closed position of the cover 14, preferably in cooperation with a latching mechanism, not shown here, holding. To the spring 15, a rack 21 is coupled, which serves to damp an opening movement. The rack is coupled with a damping, not shown here, so that a harmonic opening movement takes place after triggering of the electromagnet.

In the FIGS. 6 and 7 are schematic representations for explaining movements of the Primärluftzuführklappe shown.

A first possible movement shows the FIG. 6 , In the FIG. 6 is the hob plate 2 shown with its opening and the cover 13 in cross section. In the FIG. 6A the lid 13 is in a closed position and forms a flat surface with the hob plate 2, which is easy to clean. In a first movement phase is carried out during the movement from the closed position to the opening position initially a movement of the lid perpendicular to the hob plate 2. This is in the FIG. 6B indicated. The arrow R1 shows normal to the hob plate plane, ie perpendicular to the hob plate 2. Then takes place in a second movement phase, as in the FIG. 6C is shown, a rotation about a hinge axis 17, which is provided in the region of an edge of the opening of the hob plate. One recognizes in the FIG. 6C the rotation R2.

An alternative movement is in the FIG. 7 shown. In the FIG. 7A the lid 13 is located on the opening 12 of the hob plate 2 in its closed position. In a first phase of movement, in the FIG. 7B is illustrated, there is a displacement along the plane of the hob plate 2. This is indicated by the arrow R1 '. This results in a parallel movement of the lid 13 along the hob plate plane. Subsequently, in a second movement phase, a rotation takes place about a rotation or rotation axis 17, as indicated by the arrow R2 in FIG FIG. 7C suggests. The rotation axis 17 is provided in the region of an edge of the opening of the hob plate 2. The in the FIGS. 6 and 7 schematically illustrated movements lead to a particularly harmonious perception of the opening movement of the cover.

The combination of a provided in the hob plate opening with a folding or closing mechanism on the one hand is spring-mechanically driven and on the other hand unlocked by a solenoid, leads to a particularly simple operation and reliable primary air supply. In particular, when a release mechanism with Controls is coupled for the proposed gas burner, is also achieved in gas cooking surfaces, which are installed in furniture or used in not freestanding worktops, a good primary air supply.

Used reference signs:

1

Gas hob

2

Hotplate

3, 4, 5, 6

gas burner

7, 8, 9, 10

controls

11

Control panel

12

opening

13, 14

cover

13A

Retaining plate

13B

cover

14A

Retaining plate

14B

cover

15

feather

16

electromagnet

17

hinge axis

18

hinge

19

shell

20

poetry

20A, 20B, 20C

sealing element

21

detent mechanism

22

ignition unit

23

hinge

24

rack

PL

primary air

R1, R2, R1 '

movement direction

Claims (15)

Gas hob (1) with a cooktop plate (2), at least one gas burner (3) arranged in the cooktop plate (2), wherein the cooktop plate (2) at least one opening (12) coverable by a cover (13) for the primary air supply for the gas burner ( 3), wherein the cover (13) covers the opening (2) held in a closed position by means of an electromagnet (16) and the cover (13) releases the opening (2) with the aid of a spring element (15) in an opening position. Gas hob (1) according to claim 1, characterized in that the cover (13) by means of a latching mechanism (21) is held in the closed position. Gas hob (1) according to claim 1 or 2, characterized in that the spring element (15) and the electromagnet (16) are arranged such that a restoring force of the spring element (15) and a holding force of the electromagnet (16) act in opposite directions. Gas hob (1) according to any one of claims 1-3, characterized in that an operating element (7) for the gas burner (3) via active connection to the electromagnet (16) is coupled. Gas cooking field (1) according to one of claims 1 - 4, characterized in that an ignition unit (22) for triggering a firing process or an operating element (7) for the ignition unit (22) via operative connection with the electromagnet (16) is coupled. Gas hob (1) according to any one of claims 1-5, characterized in that the cooking field plate (2) comprises a plurality of openings (12A, 12B, 12C) which can be covered by the lid (13). Gas hob (1) according to any one of claims 1-6, characterized in that the cover (13) is at least partially made of aluminum or steel, glass or glass ceramic. Gas hob (1) according to any one of claims 1-7, characterized in that the lid (13) in the closed position with the hob plate (2) forms a flat surface. A gas hob (1) according to any one of claims 1-8, further comprising a sealing member (20A, 20B, 20C) provided in the closed position between a bearing surface of the opening (12A, 12B, 12C) and the lid (13). Gas hob (1) according to any one of claims 1-9, characterized in that the lid (14) is guided perpendicular to the hob plate (2) in the opening (12). Gas hob (1) according to any one of claims 1-9, characterized in that the lid (13) is designed in the manner of a cover flap with a hinge, wherein the hinge comprises a hinge axis (17). Gas hob (1) according to claim 11, characterized in that the cover (13) is guided at least during an opening movement from the closed position to the open position such that first a movement (R1) perpendicular to the cooking plate (2) and then a rotary movement ( R2) of the lid (13) about the hinge axis (17). Gas hob (1) according to claim 11, characterized in that the lid (13) is guided at least during an opening movement from the closed position to the open position such that initially a movement (R1 ') parallel to the hob plate (2) and then a rotary movement (R2) of the lid about the hinge axis (17). Gas hob (1) according to any one of claims 11-13, characterized in that the hinge axis (17) between the opening (12) and control elements (7, 8, 9, 10) for the gas hob (1) is arranged. A gas hob (1) according to any one of claims 11-14, characterized in that the lid (13) is fixed to at least one hinge arm (18), the hinge arm (18) engaging through the opening (12A, 12C).

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