EP2857752A1 - Assembly of gas burners - Google Patents

Abstract

In an arrangement of gas burners on a gas hob, four main burners are provided and form main hobs. Next to each main burner are two or four elongated secondary burners arranged and assigned to this main burner. The auxiliary burners are rotatable about an axis of rotation, wherein the auxiliary burners have their own secondary gas supply, which is independent of that of the main burner or can be shut off independently of this. The auxiliary burners can also heat heated intermediate areas or form additional cooking zones.

Description

Field of application and state of the art

The invention relates to an arrangement of gas burners, in particular on a gas hob.

There are various arrangements of gas burners on a gas hob known, such as from DE 102010023090 A1 , Here, the gas burners each have a round burner body, may have different sizes, and each form a hotplate. From the DE 102010006276 A1 Another gas burner is known which consists of a central main burner and a ring-shaped secondary burner. By selectively connecting or disconnecting the auxiliary burner, the hotplate on the main burner can be expanded in terms of area and performance.

Task and solution

The invention has for its object to provide an aforementioned arrangement of gas burners, can be eliminated with the problems of the prior art and in particular it is possible to extend the functionality of a gas hob.

This object is achieved by an arrangement or a gas hob with the features of claim 1. Advantageous and preferred embodiments of the invention are the subject of further claims and are explained in more detail below. The wording of the claims is incorporated herein by express reference.

It is envisaged that several or at least two main burners are provided on a gas hob or in an oven and form main hobs or define such main hotplates. In an oven they serve to heat the oven muffle. At least two main burners is associated with at least one elongated secondary burner, advantageously each of these two main burners at least one elongated secondary burner. Such a secondary burner is in each case arranged at a small distance, which may advantageously be less than 4 cm as the smallest distance, from the corresponding main burner. This means that there is always a distance of at least 0.5 cm to 2 cm between the main burner and the secondary burner. Advantageously, this smallest distance of the main burner but always less than 4 cm or 6 cm.

According to the invention, it is provided that the secondary burner is movable or can be rotated about an axis of rotation. Such an axis of rotation advantageously passes through the secondary burner, in particular through a region of the secondary burner arranged close to the main burner. This allows a simple and practicable realization of the secondary burner or both its gas supply and the rotation. A secondary burner has its own secondary gas supply, which is at least partially independent of that of the main burner or at least can be shut off independently. Preferably, the auxiliary gas supply can be shut off when the main burner is supplied with gas or burns. Under certain circumstances, the secondary burner can also burn or be supplied with gas if the associated main burner is not burning or shut off.

By disposing a movable sub-burner near a main burner, the resulting hotplate can be increased in comparison with the main hotplate formed only by the main burner. For example, a hotplate, similar to the previously described two-circuit burners of the prior art, can be enlarged for larger pots and thus also produce an increased power. Alternatively, an operator-adjustable size variability, possibly also performance variability, can be achieved. Furthermore, as will be explained in more detail below, novel and advantageous interconnections of several burners take place at a gas hob.

In an advantageous embodiment of the invention, at least three secondary burners are arranged on the main burner, advantageously four. These should be arranged on the outside of the main burner along or around this same distributed. You can, for example, in a certain rotational position similar to the aforementioned two-circuit burners form a ring or annulus around the main burner. This can be an output rotational position. As a result, a certain pot size is virtually predetermined by the size or diameter of the outer ring of the secondary burner. For even larger pots, the secondary burners can be swiveled outwards and possibly even be operated with even greater power. Thus, at least the area spanned by them is increased or a larger pot can still be heated fairly evenly, under certain circumstances, the power can be increased even more at the same time as the spanned area increases.

Advantageously, four to six secondary burners are arranged on or next to the main burner, with three or four secondary burners being regarded as a good compromise between variability on the one hand and design effort on the other hand. Advantageously, all auxiliary burners are rotatable or movable on a main burner.

The rotation of the auxiliary burners can be done manually in a simple configuration. Then mechanical rotation stops can be provided, in particular to avoid a constructive or combustion technical reasons unfavorable state of a particular rotational position. In this case, they can also be at least partially connected or mechanically coupled, so that a movement of a burner also moves one or more others. Alternatively, a drive may be provided, advantageously electric motor, which controls a specific rotational position of the auxiliary burner controlled by a control of the gas hob.

In an advantageous embodiment of the invention, the main burner on a main burner body, which is round or circular. It has advantageous lateral recesses on the upper edge and a main burner cover on top of the upper edge. This main burner body or else the main burner may correspond to the prior art.

In an advantageous embodiment of the invention, all secondary burners are designed to be similar to a main burner. This may mean that they are formed, for example, mirror images of each other. At least two secondary burners on a main burner should be identical or identical. Thus, the variety of variants can be reduced. It can thereby be achieved that only one or two versions or variants of the auxiliary burner are necessary for the entire gas hob.

As described above for the main burner, the auxiliary burner may have a secondary burner body, but here it is advantageously oblong, in particular also bent or curved. The auxiliary burner body may have lateral recesses at the upper edge and a secondary burner cover at the top of the upper edge. The auxiliary burner body has in an advantageous embodiment of the invention on a downwardly projecting connection portion which is received in a rotary bearing and is preferably round or circular. In this case, advantageously circumferential sealing means are provided, for example one or more rubber rings. This rotary bearing serves to ensure that the auxiliary burner body rests advantageously on an upper bearing surface of the pivot bearing, which should be above a hob plate of the gas hob up, and is supported mechanically downwards. This storage area is advantageous an upstanding end face of the pivot bearing. Furthermore, the connection section can have an upwardly continuous gas channel extending in it, advantageously centrally. If the rotary bearing is connected in its lower region or at the very bottom or on the side to a gas supply line, gas can also flow into the auxiliary burner body or to the auxiliary burner independently of the rotational position. In this rotary bearing can also be advantageously installed a known rotation stop in a known manner.

An advantageous embodiment for a secondary burner is a curved in plan view form or curved shape. Thus, it may be designed, for example, in the manner of a circular ring segment. With the arrangement of the aforementioned three or four auxiliary burners around a main burner, these can form approximately three-thirds circles or quarter-circles. Their width may vary, in particular it may become somewhat narrower starting from a wider area with the axis of rotation.

In an advantageous embodiment of the invention can be provided that the axis of rotation passes through an end portion of the auxiliary burner. In this case, a distance to the end can correspond approximately to the distance to the side areas.

In yet another embodiment of the invention can be provided that the secondary burner is designed to be height adjustable. It can be particularly automatically adjustable in height so that it can be moved upwards or downwards during a rotary movement or pivoting movement or moves in such a way. For example, a beveled rotating link can be provided in an aforementioned pivot bearing. Thus, for example, for a rotation angle of 90 °, a height difference of 1 cm can be realized. Thus, depending on the rotational position, a varying heating can be achieved upwards by the different height.

In an embodiment of the invention, an ignition electrode and / or flame monitoring is provided on the gas hob or on a main burner. Alternatively, this may be an ignition and flame monitoring device with an ionization electrode. Normal flame monitoring may include a thermocouple. Such ignition and flame monitoring device should be provided close to the main burner for this or for the cooking zone formed by him. According to a first possibility, this ignition and flame monitoring device can be arranged away from a secondary burner. Then this must be arranged at least with an area so close to the main burner, that at both outflowing Gas igniting or burning the main burner is sufficient for the ignition of the auxiliary burner. Thus, monitoring of the main burner alone is sufficient. So then the secondary burner but only always together with the main burner is operable and not alone without the main burner. According to a second possibility, an ignition and flame monitoring device between main burner and secondary burner can be arranged such that the secondary burner can be ignited directly in any rotational position thereof as well as directly monitored. Thus, an operation of the auxiliary burner is possible alone and without the main burner.

An aforementioned rotation range for the auxiliary burners can be relatively large and advantageously go to 180 °. Particularly advantageous it is slightly lower and goes up to 135 ° or 90 °. To comply with the aforementioned rotation stops can be provided. By limiting the range of rotation just an unfavorable position can be avoided.

According to an advantageous embodiment of the invention, it is possible that in an arrangement according to the invention or a gas hob two adjacent cooking zones main burner each having at least one associated rotatable auxiliary burner, advantageously with a plurality of rotatable auxiliary burners. Each main burner thus has at least one own or associated auxiliary burner. These auxiliary burners are arranged in an intermediate region lying between the main burners or at least partially in such an intermediate region. They are in each case on the other main burner and / or in the intermediate range rotatable. Thus, one of the two main burners and the secondary burners heated together and enlarged so-called bridge cooking area can be created. Here, in particular, an operation of the auxiliary gas burner is provided with at least one main burner. This usually has an elongated shape for elongated roasting. Usually, a separate small bridge burner lying between these main burners is otherwise provided for this purpose, which otherwise can serve no further purpose.

According to a further advantageous embodiment of the invention, it is possible that in an arrangement according to the invention or a gas hob, four main burners are arranged approximately in the square or in the square or rectangle. Between them a central area is formed. In the central area a plurality of secondary burners are arranged or point into these, these secondary burners being rotatable on one of the main burners and / or towards the central area. In this case, each of the main burners should be assigned at least one such rotatable auxiliary burner. The auxiliary burners advantageously have a length which is so is that they do not touch each other in a central position for all equally rotated, for example, in which all secondary burners are at most close to a center of the central area. Furthermore, at least the secondary burners which can be rotated to the central region should be able to be operated independently or independently of the other main burners and possibly existing auxiliary burners as a common intermediate hotplate. It forms, so to speak, a fifth hob. With this arrangement can then be formed with two main burners including auxiliary burners a bridge bridge cooking area.

These and other features will become apparent from the claims but also from the description and drawings, wherein the individual features each alone or more in the form of sub-combinations in an embodiment of the invention and in other fields be realized and advantageous and protectable Represent embodiments for which protection is claimed here. The subdivision of the application into intermediate headings and individual sections does not limit the general validity of the statements made thereunder.

Brief description of the drawings

Fig. 1

einen Schnitt durch einen Ausschnitt eines erfindungsgemäßen Gaskochfelds mit einer Kochstelle gebildet aus Haupt-Brenner und Neben-Brenner,

Fig. 2

eine Seitenansicht auf einen erfindungsgemäßen Neben-Brenner,

Fig. 3

eine Draufsicht auf einen erfindungsgemäßen Neben-Brenner mit Teilschnitt,

Fig. 4

eine Draufsicht auf eine Anordnung von zwei Haupt-Brennern mit jeweils vier Neben-Brennern zur Bildung einer gemeinsamen großen Kochstelle mit Brücken-Kochstelle in einem Zwischenbereich,

Fig. 5

eine alternative Anordnung von zwei Haupt-Brennern mit jeweils zwei Neben-Brennern, von denen jeweils einer ausgeschwenkt ist zur Bildung einer weiteren Neben-Kochstelle und

Fig. 6

eine alternative Anordnung von vier Kochstellen ähnlich denjenigen aus Fig. 4, wobei von jeder Kochstelle ein Neben-Brenner in einen Zentralbereich geschwenkt ist zur Bildung einer weiteren Kochstelle.

Embodiments of the invention are shown schematically in the drawings and are explained in more detail below. In the drawings show:

Fig. 1

a section through a section of a gas hob according to the invention with a cooking point formed of main burner and secondary burner,

Fig. 2

a side view of a secondary burner according to the invention,

Fig. 3

a plan view of a sub-burner according to the invention with partial section,

Fig. 4

a plan view of an arrangement of two main burners, each with four secondary burners to form a common large hob with bridge cooking in an intermediate area,

Fig. 5

an alternative arrangement of two main burners, each with two sub-burners, one of which is swung out to form a further secondary hotplate and

Fig. 6

an alternative arrangement of four hotplates similar to those Fig. 4 , wherein from each cooking place a secondary burner is pivoted into a central area to form a further cooking place.

Detailed description of the embodiments

In the Fig. 1 is a partial section of a portion of a gas hob 11 according to the invention shown with a cooktop plate 12 and a main hob 14 of an array of several, formed by a main burner 16. The main burner 16 is formed in a known manner and has a round Main burner body 17 and a corresponding main burner cap 18. In a known manner, an escape of gas to form flames 20 after ignition is possible through recesses 19 at the upper edge of the main burner body 17.

To the left of the main burner 16 is an ignition Z and a flame monitoring F according to the prior art, as explained above. Here is the arrangement of the ignition Z and the flame monitoring F away from a right next to the main burner 16 arranged sub-burner 25. However, they could also be arranged between these two, such as the dashed positioning for ignition Z and flame monitoring F right next to Main burner 16 shows.

The auxiliary burner 25 has a secondary burner body 26, on whose upper edge with recesses 28 a secondary burner cover 27 is arranged. From the secondary burner body 26 is down from a round trained connection portion 30 from which is mounted or received in a pivot bearing 32. For sealing, two sealing rings 33 may be provided. The pivot bearing 32 in turn sits with a flange portion 35 on the top of the hob plate 12, for which purpose a serving the optics cover 36 may be provided. On an upper end surface of the pivot bearing 32 rests the weight of the auxiliary burner 25 and the secondary burner body 26th

From below, a secondary gas supply line 38 is guided in the rotary bearing 32, which is controlled differently than a main gas supply line 22 to the main burner 16. In particular, the secondary gas supply line 38 in series behind the main burner 16 and dessen Haupt Gas supply 22 may be switched, but have its own shut-off valve, so that it can be switched to the main burner 16, but can not be operated without this. Alternatively and advantageously, it can have a completely independent and independently shut-off gas supply line, advantageous with its own shut-off valve and actually with a self-adjustable gas supply via a corresponding gas valve as well as for the main burner. If the gas then exits laterally from the secondary burner 25, it is automatically ignited by the flame 20 of the main burner 16, so that 25 flames are produced at the entire secondary burner. Alternatively, the dashed ignition Z and flame monitoring F can be used.

The auxiliary burner body 26 is rotatable with its connecting portion 30 in the pivot bearing 32. This can be any rotation, alternatively, not shown here, but easily realizable pivot stop can be provided, for example, by an externally screwed into the connection portion 30 screw, which runs over a certain range of rotation in a backdrop in the pivot bearing 32. The main burner and / or a secondary burner can also be designed as a so-called catalytic burner and work accordingly, as for example in the DE 102008036566 A1 is described. Then, a combustion of gas in general or especially in difficult conditions or positions of the various gas burners to each other better. The presentation of the Fig. 1 could also be a gas burner in an oven within the scope of the invention.

The side view of Fig. 2 on the secondary burner 25 shows its longitudinal extent and the recesses 28 below the secondary burner cover 27. The plan view of the Fig. 3 shows its curved shape. It can be seen that the secondary burner 25 forms a kind of semicircle in this area, so that the distance to the left indicated main burner 16 regardless of the angle of rotation or the rotational position in is about the same.

As an alternative to the embodiment of the secondary burners shown here corresponding to the construction of the main burners or a normal gas burner, a secondary burner can generally also be designed such that an elongate hollow body, for example as a pipe or hollow profile, is used. At him appropriate openings are attached, which either point to the side or upwards, possibly also obliquely to the side and upwards. So a one-piece education is possible.

From the Fig. 4 shows an arrangement of two hotplates 14a and 14b, in each of which a round main burner 16a and 16b is surrounded by four auxiliary burners 25. Are located in one of the hotplates 14a or 14b, the secondary burner 25 in the direction of the main burner 16 toward turned state or the secondary burners 25ad and 25ac and 25ba and 25bb in the dotted state, they form a kind of almost closed circular ring around the main burner 16a and 16b. So they correspond to a two-circuit burner, as he from the above-mentioned DE 102010006276 A1 known per se. The auxiliary burners 25 can thus form a second circle or an extension to the respective main burner 16, if a correspondingly large pot with a correspondingly high power is to be heated. The two main burners 16a and 16b can operate or be controlled independently of each other.

In order to form a bridge cooking point described above, for example, for heating large pots such as roasting the like, the two auxiliary burners 25ad and 25ac the first hob 14a something to the other main burner 16b and the two auxiliary burners 25ba and 25bb the second cooking point 14b to be slightly rotated to the other main burner 16a. They are thus rotated in the intermediate region between the main burners 16a and 16b and, as can be seen, now form a continuous elongated heated zone. Thus, a roast B shown in dashed lines, which is placed over the two cooking zones 14a and 14b, are heated. For solid burners otherwise an unheated area would be given in the intermediate area between the two main burners 16, which could provide bad cooking results. Here, a single move or a joint, possibly coupled movement may be possible.

From the Fig. 4 It is easy to see that all four arms or secondary burners 25a or 25b are turned away from the respective main burner 16 in order to create a larger single cooking point, which is also mentioned above. This can be an angle of about 20 ° to 45 ° or even more. Thus, the diameter of the hob or the resulting burner can be significantly increased or even doubled under certain circumstances.

In the Fig. 5 It is shown how two slightly different round main burners 116a and 116b form two burners 114a and 114b. Each of the main burners 116 is surrounded by two approximately semi-circular sub-burners 125. In dotted state they form, similar to in Fig. 4 , Two-circuit cooking in a known manner. If the sub-burner 125ab and the sub-burner 125bb are pivoted away from the main burner 116 and pivoted toward each other so that they almost touch each other, they can form another auxiliary cooking surface 114c on which a pot T shown in dashed lines is heated can. The other two hotplates 114a and 114b can then be operated either quasi in single-circuit operation only with the respective main burner 116 or in a manner of speaking slightly extended operation together with each still close to the main burner 116 extending sub-burner 125th

Yet another alternative arrangement according to the invention of cooking zones 214 on a gas hob 211 is shown in FIG Fig. 6 shown. In this case, four individual hotplates 214a to d are again essentially corresponding to those Fig. 4 formed, so each have four sub-burner 225. In particular, the main burners 216a to d are designed identically here, as are the secondary burners 225 except for their rotatability. All of these burners 214 and burners can be operated as explained above as a single-circuit or two-circuit. Be according to Fig. 6 the four sub-burners 225, which are provided closest to a central region in the middle of the arrangement of the four hotplates 214, are rotated towards each other, thus forming a new central hotplate 214e. On this turn, a dashed pot T can be placed and heated. Here, what is generally true for a gas hob and the above arrangements, a kind of cross-large pan support is provided, which is therefore not only slightly larger than a hob with appropriate shape.

In general, the secondary burners may have a length on the order of the diameter of the main burner body, for example 50% to 200% of this diameter. The auxiliary burners can according to Fig. 3 have along both longitudinal sides recesses for flames, according to the Fig. 4 then inward to the main burner out and out, or just on one side. Then it is advantageous side facing away from the main burner side.

A control of the main burners or the secondary burners via controls or a controller including certain programs is not explained here. However, this can be easily realized, in particular with an electronic control for the gas hob, which controls electromotive gas valves. So it can supply the individual main burners and the individual sub-burners, these possibly in pairs, with gas.

Claims (14)

Arrangement of gas burners, wherein at least two main burners are provided on the gas hob and form main cooking zones or defined, wherein at least two main burners at least one elongated secondary burner is associated with and this secondary burner each with a small distance to the corresponding to the main burner, characterized in that the auxiliary burner is movable or rotatable about an axis of rotation, wherein the auxiliary burner has its own auxiliary gas supply, which is independent of that of the main burner or can be shut off independently thereof , Arrangement according to claim 1, characterized in that at least three auxiliary burners are arranged on the main burner, preferably distributed uniformly along the outside, preferably four to six secondary burners. Arrangement according to claim 1 or 2, characterized in that the auxiliary burner is designed for manual rotation, preferably with at least one rotation stop. Arrangement according to one of the preceding claims, characterized in that all auxiliary burners are formed identically on a main burner, in particular at least two identical or identical. Arrangement according to one of the preceding claims, characterized in that the auxiliary burner has a secondary burner body which is round or circular, with lateral recesses at the upper edge and a secondary burner cover on top of the upper edge. Arrangement according to claim 5, characterized in that the auxiliary burner body has a downwardly projecting connection portion which is received in a rotary bearing with circumferential sealing means, wherein in particular the auxiliary burner body rests on an upper bearing surface of the pivot bearing, preferably at the upwardly projecting End face, wherein the connecting portion has an upwardly continuous Has gas duct and the pivot bearing is connected in the lower part to a gas supply line. Arrangement according to one of the preceding claims, characterized in that a secondary burner is curved in plan view or curved, preferably in the manner of a circular ring segment. Arrangement according to one of the preceding claims, characterized in that the axis of rotation passes through an end region of the auxiliary burner, preferably at a distance from the end corresponding to the distance to the side regions. Arrangement according to one of the preceding claims, characterized in that a secondary burner is adjustable in height, in particular automatically adjustable in height so that it can be moved upwards or downwards during a rotary movement or pivotal movement, in particular by a bevelled pivoting in a rotary bearing. Arrangement according to one of the preceding claims, characterized in that the main burner has an ignition electrode and / or flame monitoring, in particular with a thermocouple, alternatively an ignition and flame monitoring device with an ionization electrode, preferably this either removed from a secondary burner or near a secondary burner while being arranged between the main burner and the secondary burner. Arrangement according to one of the preceding claims, characterized in that a secondary burner has a rotation range up to 180 °, preferably to 135 ° or to 90 °, in particular a rotation stop is provided. Arrangement according to one of the preceding claims, characterized in that two adjacent burners main burners each having at least one rotatable auxiliary burner, wherein the auxiliary burners are arranged in a lying between the main burners intermediate region and each on the other Main burners are rotatable to form an enlarged of the two main burners and the secondary burners enlarged bridge hotplate. Arrangement according to one of the preceding claims, characterized in that four main burners are arranged in a rectangle or square with a central region between them, several secondary burners being arranged in the central region, the auxiliary burners being rotatable on one of the other Main burner to or to the central area, wherein the rotated to the central area side burners are independently or independently of the other main burners and optionally existing auxiliary burners as own common intermediate hob operated. Arrangement according to claim 13, characterized in that the sub-burners have a length such that they are rotatable on one of the other main burners to or to the central area without touching each other in this rotated position.

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