Mobile gas cooker

Abstract

The invention relates to a gas cooker (2), having a plate-like inflow chamber (6), with a first main side (8) and a second main side (10) opposite the first main side (8), the main sides being connected to each other via edge sides (12), wherein the first main side (8) has perforations (14) for the throughflow of a combustible gas and / or a combustible air / gas mixture, and the second main side (10) and / or an edge side (12) has a gas inflow opening (24) for the releasable connection to a gas reservoir (142), and upper parts (30, 56, 60) and lower parts (28, 42, 46), which are each mounted pivotably about a pivot axis (54, 58, 62), are attached to the inflow chamber (6) and are each pivotable between a transport position and a use position, wherein, in the use position, the free, lower ends of the lower parts (28, 42, 46) form at least one foot element (4) for setting up the gas cooker (2) on an underlying surface, and the free, upper ends of the upper parts (30, 56, 60) form a plurality of cooking-utensil supporting surfaces (36) which, in the use position of the upper parts (30, 56, 60), span a common plane, wherein said common plane is arranged outside and spaced apart from the inflow chamber (6) in such a way that the first main side (8) faces the common plane, wherein the upper parts (30, 56, 60) and the lower parts (28, 42, 46) in their transport position extend in the direction of the main sides (8, 10) of the inflow chamber (6).

Description

[0001] Mobile gas cooker The subject matter of the present invention is a gas cooker according to claim 1, which is particularly mobile and multifunctional and can be used, for example, when camping. Gas cookers have been known for a long time. They are used both in kitchens and, for example, as mobile camping cookers for cooking food. In conventional mobile gas cookers, as known, for example, from DE 10235773 A1, the combustible gas and thus the flame emerges in a horizontal plane from a usually rotationally symmetrical burner body. A cookware item such as a pot or pan is held above the burner body by a corresponding cookware holder. If the cookware has a flat base, the combustible gas emerges in a plane that is parallel to the base of the cookware.This results in design restrictions with regard to the geometry and size of the gas cooker, since the flame pattern radiating laterally must be taken into account. CN 2180649686 U, for example, discloses a mobile gas cooker with four support feet and four holding arms for placing cooking utensils on top, which can be folded down for transporting the grill. Nevertheless, the base body of the gas cooker is comparatively high and the folded arms tend to get caught on other things when the gas cooker is stowed away. Based on this, the object of the present invention is to propose a gas cooker that offers more freedom with regard to the geometry and size of the gas cooker. This object is achieved with the features of independent claim 1. Dependent claims are directed to advantageous developments.The gas cooker according to the present invention has a plate-shaped inflow chamber with a first main side and a second main side opposite the first main side, which are connected to one another via edge sides, wherein the first main side has perforations for the flow through of a combustible gas and / or a combustible air-gas mixture and the second main side and / or an edge side has a gas inflow opening for detachable connection to a gas reservoir, wherein pivotally mounted upper parts and lower parts are attached to the inflow chamber, which can each be pivoted between a transport position and a use position.The free, lower ends of the lower parts form at least one foot element for setting up the gas cooker on a surface in the use position, and the free, upper ends of the upper parts form several cookware support surfaces which, when the upper parts are in the use position, span a common plane. The common plane is arranged outside and at a distance from the inflow chamber such that the first main side of the feed chamber faces this common plane, so that a flame blazing above the main side of the feed chamber can heat the underside of a cookware resting on the cookware support surfaces. To prevent the support surfaces or the upper parts from being exposed to the flame in the use position, they are arranged outside a vertical projection of the first main side onto the common plane.This means that in the use position they protrude diagonally upwards and outwards at an angle of >90° to the first main side. Furthermore, the invention provides that the upper parts and lower parts extend in the direction of the main sides of the inflow chamber in their transport position. In this way, a very flat and compact gas cooker can be provided in the transport position which is easy to stow and transport. In their transport position, the upper parts and lower parts do not protrude at an angle and are bulky, but rather they extend essentially in the same direction as the plate-shaped inflow chamber. In this way, a flat and compact gas cooker is formed in the transport position. The gas cooker is in particular a portable and mobile gas cooker whose upper and / or lower parts can be pivoted or folded for transport.are designed to be foldable, so that the upper and / or lower parts can be pivoted towards the plate-shaped inflow chamber in order to form a flat gas cooker in the transport position, which can be easily stowed and transported. The term plate-shaped inflow chamber is understood in particular to mean that the main sides each have a larger area than the edge sides. In particular, the area of ​​a main side is at least five times larger than the area of ​​an edge side, preferably the sum of all edge sides. Preferably, the inflow chamber is cuboid-shaped and flat. The first main side is also referred to as the top side and the second main side as the bottom side, since in the position of use the gas cooker is usually placed with the foot elements on a surface and thus the second main side or bottom side is oriented downwards and the first main side or top side is oriented upwards.The first and second main sides are formed by plates, with the gas cooker flame forming on the top side of the first main side. The inflow chamber is thus formed by a type of flat trough, the upper side of which is closed off by a perforated plate, above which the flame forms. The inflow chamber forms a type of flat housing, the top and bottom of which are each formed by a plate (sheet metal), with the plate forming the top or first main side being perforated. For example, opposite the perforated plate, i.e. on the bottom, is the gas connection with a gas inflow opening. This flat inflow chamber represents a very simply constructed basic body of the gas cooker.During operation, a flammable gas, such as propane and / or butane, flows from the gas reservoir, which is connected directly or indirectly via a gas supply line with a gas connection surrounding the gas inflow opening, into the plate-shaped inflow chamber. The flammable gas is usually stored under pressure in the gas reservoir so that it is forced into the inflow chamber and out through the perforations. If ignited outside the first main side, for example with a match or lighter, the flammable gas burns with oxygen from the ambient air as it escapes from the perforations. The resulting flames are directed directly towards the cookware support surface(s) due to the orientation of the first main side. If a piece of cookware is placed on the cookware support surfaces, the flame hits the bottom of the cookware vertically.Alternatively, a mixture of a flammable gas and air escapes through the perforations and can be ignited after exiting the perforations. Even then, the resulting flames hit the bottom of a cookware placed on the cookware support surfaces vertically. At the same time, the flame path directed directly onto the cookware makes it easier to create a windbreak for mobile use and even to integrate it easily into the gas cooker. Preferably, the upper and / or lower parts are flat, in particular plate-shaped. In this case, they are not arms like in the prior art, which are pivotally mounted at one point on the usually round base body of a gas cooker, but rather they are preferably plates that are mounted on a pivot axis relative to the base body of the gas cooker, e.g., via several pivot points.In this way, they can lie flat against the inflow chamber in the transport position and thus contribute together with the inflow chamber to the formation of a compact, flat package. These are preferably flat upper and / or lower parts that extend along the longitudinal and / or transverse sides of the plate-shaped inflow chamber and are attached to these. The pivot axes thus run along the longitudinal and / or transverse sides of the inflow chamber. Preferably, two flat upper and / or lower parts are arranged on opposite sides, in particular longitudinal sides, and attached at two pivot points. In this case, the upper parts in particular can almost completely cover the first main side on which the flame burns in their transport position.If the first main side becomes dirty when in use, this is covered by the upper parts during transport and the area around the gas cooker is protected from dirt. This could be a bag or backpack, for example, in which the folded gas cooker is stored. The flat upper and lower parts also do not get caught on other things when the gas cooker is stowed away. When in use, the gas cooker is stable, can be placed on a variety of surfaces and forms a sufficiently large surface on which, for example, cooking utensils can be placed. The main sides of the inflow chamber are preferably essentially rectangular. The same applies to the plate-shaped upper and lower parts, although these preferably have various indentations or bulges in their basically rectangular shape.Thus, in the transport position, the inflow chamber, upper parts, and lower parts form a flat, cuboid-shaped block. In the transport position, the upper parts and lower parts are, for example, placed against the inflow chamber and / or in pairs. In pairs means that the upper parts rest against one another alternately, or that the lower parts rest against one another alternately. In one embodiment of the invention, it is provided that the upper parts can be moved into their transport position by being pivoted towards one another in opposite directions and / or the lower parts can be moved into their transport position by being pivoted towards one another in opposite directions. The upper parts and lower parts are thus pivoted inwards to bring them into the transport position. From there, they are pivoted outwards to bring them into the use position.In this position of use, they are not at an angle of approximately 90° to the main sides of the inflow chamber, but starting from the first main side, this angle is greater than 90°, for example approximately 100°. This allows a relatively small inflow chamber to be selected, but the resulting plane on which cookware can be placed is larger. In one embodiment of the invention, the upper parts rest against the inflow chamber and / or against one another in their transport position, and the lower parts rest against the inflow chamber and / or against one another in their transport position. However, it is preferably provided that even if the upper parts rest against the first main side of the inflow chamber in the transport position, the lower parts only rest against one another and preferably overlap, although a distance remains between the lower parts and the second main side of the inflow chamber.It should be noted that the gas cooker can preferably also be operated in the transport position or in a partially prepared transport position and in particular the pivoted lower parts can be used to fix the gas cooker to another component. Depending on the design of the gas cooker, it can therefore also be used in the transport position. For this purpose, the distance between the lower parts and the second main side of the inflow chamber can be used in particular if the gas cooker with its lower parts is guided through openings in a third part and the lower parts are then pivoted into their "transport position" in order to fix the gas cooker to the third part. An area of ​​the third part is then located between the lower parts and the second main side, which is made possible by the intended distance.The third part is then clamped between folded-down lower parts and the inflow chamber, and the gas cooker is thus held to the third part. The third part can be at the bottom, and the gas cooker is mounted so that its flame radiates upwards. Cookware can then be placed on the folded-up upper parts, and the gas cooker is firmly attached to the third part. The third part can be, for example, a camping table or the worktop of an outdoor kitchen. Alternatively, the gas cooker is mounted above below a cover of a cooking or grilling device so that its flame radiates downwards. The upper parts are also folded up, but no cookware is placed on them; instead, the food to be heated is located underneath the gas cooker. This makes the gas cooker multifunctional. The gas cooker according to the invention has, in particular, a plate-shaped inflow chamber.This means that the inflow chamber has a plane, hereinafter also referred to as the extension plane, within which the inflow chamber essentially extends. The extension plane is determined by the two largest main dimensions of the inflow chamber, i.e. the main sides, and the inflow chamber is significantly wider and longer than it is high. The first main side and the second main side can extend parallel to one another and to the said extension plane, but it is also possible for the first main side to be curved while the second main side is flat. The said extension plane then runs through the body of the inflow chamber and extends parallel to the second main side. In the transport position, the upper and lower parts are preferably aligned essentially parallel to this plane or extension plane.As already described, a pivoting design of the upper and lower parts allows the gas cooker to be made compact and easy to transport in the transport position. In the transport position, the preferably plate-shaped upper parts preferably lie against the first main side and / or at least partially cover it, if necessary without touching it. In the use position, the upper parts preferably also act as a windbreak, which can significantly improve the efficiency of the gas cooker, especially when used outdoors, compared to conventional gas cookers with narrow holding arms. The upper parts are preferably designed as closed wing surfaces, i.e. without one or more openings. In the transport position, the lower parts preferably lie against the second main side and / or at least partially cover it.The term "at least partially covering" means that the lower part is positioned above the second main side in the transport position and thus at least partially covers it. The lower part can rest against the second main side or is at a distance from it without touching the second main side. With regard to the lower parts, a design is preferred in which, in the transport position, none of the lower parts rests against the second main side, but rather a distance remains between the lower part closest to the second main side and the second main side. As described, this distance can be used, for example, to secure the gas cooker to a flat third component, for example made of sheet metal, with the folded lower parts creating a positive connection.The gas cooker can therefore also be used multifunctionally as a burner or additional burner, for example in a lid of a grill, in particular a charcoal or gas grill, for example as a burner to increase the cooking temperature, i.e. in a grill to increase the temperature of the food to be cooked. In this case, the upper parts are preferably folded out so as not to impede the escape of flames from the perforations. Preferably, only two upper parts and two lower parts are provided. The invention thus moves away from round, "spider-shaped" gas cookers with several radially projecting support arms, but rather uses two plate-shaped upper parts and lower parts that can be folded flat. In their transport position, the upper parts lie in one plane and / or the lower parts lie in one plane. For example, their end faces abut one another or are at least close to one another.In an alternative embodiment, in their transport position, the upper parts and / or the lower parts overlap at least in some areas. The pivot axes of the upper and lower parts run accordingly. For example, the pivot axes are provided to run parallel to one another or congruent. This allows the upper and lower parts to be folded compactly in opposite directions towards the inflow chamber. In particular, the pivot axis of each upper part coincides with the pivot axis of a lower part. They therefore share a common pivot axis in which a corresponding joint is formed. For example, an upper part has a common pivot axis with a lower part located on the opposite side of the inflow chamber. This eliminates the need for joints, which is also an advantage over conventional "spider-shaped" gas cookers with a multitude of support arms and joints.It also contributes to the flat shape of the gas cooker in its transport position. The interior of the inflow chamber is preferably free of any internal components, i.e., in particular, it contains no flow-guiding components. The even distribution of the combustible gas across the perforations is achieved in particular by the number and arrangement of the perforations, which represent a counterpressure for the gas flowing through, thus ensuring the distribution of the gas. In another embodiment of the invention, internal components are present within the inflow chamber which guide the gas to desired areas. These can be, for example, baffles, channels, etc. The perforations are preferably aligned such that they each penetrate vertically or at right angles through the first main side. The perforations have, for example, a round cross-section and they preferably have a cross-sectional area of ​​0.5-5 mm, more preferably of approximately 0.5-2 mm.The perforations are preferably distributed over the entire surface of the first main side or, for example, in two areas on the long sides of the first main side. The perforations are preferably evenly distributed, for example in several rows and columns. Alternatively or additionally, it is also possible, for example, to distribute the perforations in a partial area so that they form a logo or lettering in the partial area. The inflow chamber is preferably made of a metallic material, in particular sheet metal, preferably steel, especially stainless steel. This makes the gas cooker durable and requires few repairs. The same applies to the upper and lower parts, as well as other attachments. The first main side of the inflow chamber is preferably curved in at least one direction, in particular outwards, so that a slightly convex burning surface is formed on the outside of the inflow chamber.A curvature of the first main side has the advantage that the pressure of the flammable gas is easier to absorb, thus improving the durability of the inflow chamber. In this context, it is particularly preferred that the lower parts have recesses between which the gas inflow opening remains freely accessible in the transport position, i.e. in the folded state. This enables access to a gas connection comprising the gas inflow opening even when the lower parts are in the transport position. If, for example, the lower parts are used to form a positive connection during assembly in another component such as a lid, the gas cooker can be connected to the gas reservoir and operated in this assembled state. Preferably, at least one projection is formed on each lower part, which projects laterally from the corresponding lower part in the direction of the pivot axis of the respective lower part.These projections can be used for different purposes. In particular, they allow the projections to be used as a type of handle for folding the lower parts in and out. Such projections are particularly advantageous when the lower parts overlap in the transport position, as the plate-shaped lower parts are otherwise difficult to separate from one another. In one embodiment of the invention, the projections of two lower parts are therefore positioned offset from one another in the transport position in order to be able to easily grip them individually. However, a projection can also be used to create further functional features. For example, it can be provided that at least one attachment and connecting elements are present, which are formed on the lower parts and the upper parts for releasably fastening the attachment to them in order to fix the lower parts and the upper parts in the use position.Means for fixing this component can be formed, for example, on a projection. The attachment and the connecting elements are then designed, for example, such that on one side of the gas cooker, a detachable plug-in connection is created between the attachment and the lower parts and between the attachment and the upper parts by connecting in a corresponding plug-in direction, and the corresponding plug-in direction of the upper parts runs orthogonal to the corresponding plug-in direction of the lower parts in order to prevent the lower parts from being accidentally released or folded over. This enables the most stable fixation possible in all directions. A locking position of the detachable plug-in connection between the attachment and the lower parts is preferably achieved first by pivoting the lower parts and subsequently by simultaneously plugging the attachment to the upper parts.For example, the pivoting movement of the upper and lower parts is prevented in the use position by, for example, supporting them on the inflow chamber in the use position. However, the gas cooker preferably has at least one said attachment. The at least one attachment forms, for example, at least one further cookware support. The gas cooker then has an attachment and connecting elements, wherein the connecting elements on the lower parts and the upper parts are designed for releasably fastening the attachment to them. The at least one attachment and the connecting elements of the upper and lower parts are provided to fix the lower parts and the upper parts in the use position, thus preventing them from folding together in the transport position.Preferably, two attachments are provided on the end faces of the inflow chamber, while the pivot axes of the upper and lower parts run parallel to the long sides of the inflow chamber or coincide with them. Preferably, each attachment is designed as a flat sheet metal part. For example, the connecting elements are designed to form a force-fitting and / or form-fitting connection with the attachment. For example, the connecting element is designed as a projection, an opening or a slot or combinations thereof. The invention further relates to an arrangement comprising a cover and a gas cooker according to one embodiment of the invention, which is attached to the cover. This makes the gas cooker multifunctional and means, for example, that the gas cooker is detachably mounted, fastened, attached, etc. to the cover.In particular, it is provided that the gas cooker is secured to the cover by its lower parts in the so-called transport position. The second main side of the gas cooker rests on the underside of the cover. The fastening area of ​​the cover is then located between the folded-down lower parts and the second main side of the gas cooker, for which purpose the described distance can be provided. The gas cooker is then secured to an upper cover such that the first main side with the perforations points downwards. It is preferably provided that the cover for this purpose has a plurality of recesses through which the lower parts are initially guided before they are pivoted into their transport position. The gas cooker is then held on the cover by a positive fit. The arrangement is preferably designed such that the gas inlet opening of the gas cooker is accessible through a recess in the cover.The gas connection can then be routed through this recess. As already described, the flame of the gas cooker can be directed downwards to heat any food located underneath. This allows high heat to be generated from above, which has proven particularly advantageous when grilling food. However, the cooking or grilling device used does not have to have a permanently installed top heat grill; rather, the gas cooker according to the invention can be used not only to heat cookware or other food placed on it, but can also optionally be installed underneath the cover of the cooking and grilling device and, in this design, function as a top heat grill. The components of the gas cooker are designed in such a way that they can be used multifunctionally for both purposes.In one embodiment of the invention, the cover forms a foldable or removable lid of a grill. The lid can then be supplemented with the optional gas cooker if a top heat grill is desired. The cover can be an integral part of the grill or it can be a lid that is completely removable from the grill. For example, this cover can be formed from several sheet metal plates that are connected to one another by plug-in connections. The sheet metal plates are plugged together to form the cover as required and used with or without the gas cooker as a top heat grill. When not in use, the sheet metal plates can be stacked flat on top of one another and stowed away. For this purpose, the gas cooker is removed, i.e. the lower parts are unfolded and pulled downwards through the recesses.The cover preferably has a plurality of side parts and at least one upper cover plate to which the gas cooker is attached. This has the particular advantage that, with an existing cover, only the upper cover plate needs to be replaced if it is to be equipped with a gas cooker. The remaining side parts can still be used, and the new cover plate only needs to have recesses for the lower parts and the gas connection to pass through. The upper cover plate is preferably not curved, but flat, so that the second main side of the gas cooker, which is also flat, can rest against it. Furthermore, the plate-shaped lower parts can be easily pivoted towards one another and rest on the upper side of the cover plate.If the cover is used merely as the lid of a grill, a differently designed cover plate is provided than when used with a gas cooker as a top heat grill. The invention therefore further encompasses a grill, in particular a charcoal or gas grill, having such an arrangement according to an embodiment of the invention, wherein the gas cooker is attached to an upper cover of the grill such that the first main side with the perforations points downwards in the direction of the food to be grilled. The cover is designed as already described. Further details and advantages of the present invention will become apparent from the following description of an exemplary embodiment in conjunction with the drawing, without the invention being limited to the example shown. The drawing schematically shows: Fig. 1 an exemplary embodiment of the invention in a perspective view; Fig.Fig. 2 shows the embodiment of the invention in a side view; Fig. 3 shows the embodiment of the invention in a top view; Fig. 4 shows the embodiment of the invention in a bottom view; Fig. 5 shows the embodiment of the invention in a side view; Fig. 6 shows the embodiment of the invention folded up in a perspective view; Figs. 7 and 8 show the embodiment of the invention folded up in two side views; Fig. 9 shows the embodiment of the invention folded up in a top view; Fig. 10 shows the embodiment of the invention folded up in a bottom view; Figs. 11 and 12 show the embodiment of the invention folded up in two longitudinal sections; Fig. 13 shows the embodiment of the invention with attachments in a perspective view; Figs. 14 to 20 show various views of a lid, partly with the gas cooker according to the invention, partly without it; Fig.21 schematically shows a detail of the lid with the gas cooker mounted according to the present invention; and Figs. 22 to 25 show various possible uses of the gas cooker according to the invention. Figures 1 to 5 show an embodiment of a gas cooker 2 in various views, each in the use position. Figures 6 to 12 show various views of the embodiment of the gas cooker 2 in the transport position. Figures 1 to 12 are described together below unless explicit reference is made to one of the figures. The gas cooker 2 can be placed on a surface in the use position (cf. Fig. 1), for example via four foot elements 4, for example, a table or a floor. The gas cooker 2 comprises an inflow chamber 6 which is plate-shaped.The inflow chamber 6 has a first main side 8 and a second main side 10, which are aligned essentially parallel to one another and, in the position of use, essentially parallel to the surface on which the gas cooker 2 is placed. Essentially parallel means that the first main side 8 and / or the second main side 10 can be curved. In the present example, the first main side 8 is curved outwards and the second main side 10 is flat. The second main side 10 defines an extension plane 11 that extends in the same direction. The extension plane 11 is determined by the two largest main dimensions of the inflow chamber, i.e. the main sides. The main sides 8, 10 are connected to one another via edge sides 12 (cf. Fig. 4), which together with the main sides 8, 10 form the plate-shaped inflow chamber 6.Each main side 8, 10 is at least a factor of 5 larger than an area of ​​the edge side 12, preferably even larger than the sum of the areas of the edge sides 12, so that the inflow chamber 6 forms a flat housing. The first main side 8 of the inflow chamber 6 has a plurality of perforations 14 which penetrate the first main side 8 and thus create a connection between an interior space 16 of the inflow chamber 6 and a region 18 above the first main side 8 (Fig. 2). For the sake of clarity, the perforations 14 are only partially provided with reference numerals in all figures. In the present exemplary embodiment, the perforations 14 are distributed in a grid pattern over the first main side 8, but the perforations 14 can be arranged in other patterns. The edge sides 12 preferably do not have any perforations, openings or the like, but the inflow chamber 6 is preferably gas-tight.At least the inflow chamber 6 is preferably made of a metallic material, in particular of a material that can withstand high temperatures, preferably constructed of sheet metal, in particular of stainless steel. The remaining parts of the gas cooker 2 are also preferably made of this material. As shown in particular in Fig. 2, the first main side 8 is curved, with a central region 22 extending parallel to the plane of extension 11 and edge regions 20 surrounding the central region 22 being curved. The inflow chamber 6 further comprises a gas inflow opening 24 (cf. Fig. 4), which in this exemplary embodiment is formed in the second main side 10. It is part of a gas connection 26, to which a gas reservoir (not shown here) can be directly connected or to which a hose connector can preferably be connected.In this example, the second main side 10 has no further perforations, openings, or apertures other than the gas inlet opening 24. During operation of the gas cooker 2, combustible gas is supplied under pressure to the inlet chamber 6 via the gas connection 26 with its gas inlet opening 24. Propane and / or butane are used in particular as the combustible gas. The combustible gas can flow into the area 18 through the perforations 14 distributed over the surface of the first main side 8. If ignited there, for example using a lighter, a match, or the like, the gas begins to burn when it exits the first main side 8 into the area 18. The distribution of the perforations 14 over the first main side 8 creates a counterpressure that ensures an even distribution of the gas over the surface of the first main side 8.This leads to a uniform thermal load on the first main side 8, so that temperature peaks can be avoided here. Two foot elements 4 are part of a foldable lower part 28 (two), which is plate-shaped with angled portions (see, for example, Fig. 1). A recess 29 is formed between the foot elements 4 of a lower part 28. The gas cooker 2 also has two upper parts 30, which are also plate-shaped with angled portions. When assembled, the upper parts 30 project beyond the first main side 8 and laterally delimit the area 18. The upper parts 30 each have an upper edge 32, which forms a cookware support surface 36 interrupted by recesses 34 (see Fig. 1).On the cookware support surfaces 36 of the two upper parts 30, which span a common plane when the upper parts 30 are in use, a piece of cookware, for example a pot or a pan, can be placed, which is then heated during operation by the gas burned as it flows out of the perforations 14. Because the cookware support surface 36 is only formed in some areas, even a round-bottomed wok can be placed on the cookware support surface 36, allowing the gas cooker 2 to be used to operate a wok. For the sake of clarity, not all recesses 34 are provided with reference numerals in the figures. Furthermore, the upper parts 30, which are preferably designed as closed wing surfaces, serve as wind protection, so that the efficiency of the gas cooker 2 is increased, particularly when used outdoors. The gas cooker 2 is foldable.Upper parts 30 and lower parts 28 are articulated via joints 38 to the inflow chamber 6 so that the upper parts 30 and lower parts 28 can be folded in or pivoted and thus, in the transport position, rest on the first main side 8 in the case of the upper parts 30 and on the second main side 10, or extend parallel to it. These joints 38 are described in more detail below. Upper parts 30 and lower parts 28 have connecting elements 74 (see in particular Figure 5) which are used to connect the gas cooker 2 to an attachment 72. The connecting elements 74 on the lower parts 28 and the upper parts 30 serve for releasable attachment to the attachment 72. The attachment 72 is provided to secure the lower parts 28 and the upper parts 30 in the unfolded position of the use position, thus preventing them from folding together in the transport position.As shown in Figure 13, two attachments 72 are provided on the end faces of the inflow chamber 6, while the pivot axes of the upper parts 30 and lower parts 28 are parallel to the long sides of the inflow chamber 6 and the attachments 72 extend essentially orthogonal to these pivot axes. Each attachment 72 is designed as a flat sheet metal part. As Figure 13 shows, the attachments 72 form one or more additional cookware supports 36 and thus ensure an enlargement and stabilization of the surface provided for supporting a cookware. The attachments 72 can also be shaped differently in order to fulfill other functions. They can therefore also be replaced if a different function is desired on a gas cooker 2. The connecting elements 74 are formed in the upper parts 30 as slot-like recesses 76 formed at the ends.The recesses 76 narrow so that they are simply designed to form a clamping connection with the attachment 72. The lower parts 28 have projections 78, each provided with an opening 80, into which the attachment 72 engages when the lower parts 28 are pivoted into their position of use. Here, the attachment 72 and the connecting elements 74 are designed such that a detachable plug-in connection can be established between the attachment 72 and the two lower parts 28, as well as between the attachment 72 and the two upper parts 30, by connecting in a corresponding plug-in direction, and the corresponding plug-in direction of the upper parts 30 is orthogonal to the corresponding plug-in direction of the lower parts 28, in order to prevent unintentional loosening and folding over, in particular of the lower parts 28.In particular, a locking position of the detachable plug-in connection between the attachment 72 and the lower parts 28 is only achieved by pivoting the lower parts 28 and subsequently by simultaneously plugging the attachment 72 into the upper parts 30, i.e. by lowering the attachment into the respective connecting elements 74 of the upper parts 30, a final locking of the lower parts 28 is achieved. Fig. 6 shows the folded gas cooker 2 in the transport position in a perspective view. The two upper parts 30 lie in a first plane 40 (cf. Figs. 11 and 12) above the first main side 8. The cookware support surfaces 36 of the two upper parts 30 rest against one another at the end or are only spaced apart from one another by a small distance, preferably two millimeters or less. The two lower parts 28 do not lie in a common plane.A first lower part 42 of the lower parts 28 lies in a second plane 44, while a second lower part 46 of the lower parts 28 lies in a third plane 48 (see Figures 11 and 12). The planes 40, 44, 48 are aligned essentially parallel to one another and spaced from one another in a direction perpendicular to the planes 40, 44, 48. This is achieved by various joints 38. The planes 40, 44, 48 extend parallel to the extension plane 11 of the inflow chamber 6. The upper parts 30 are each connected to the inflow chamber 6 via first joints 50. These each have first articulated arms 52 which pivot about a pivot axis 54. The first joints 50, which are connected to a first upper part 56, pivot about a first pivot axis 58, while the first joints 50, which are connected to a second upper part 60, pivot about a second pivot axis 62.Two second joints 64, which are connected to the first lower part 42, also pivot about the first pivot axis 58. The second joints 64 have second articulated arms 66, which pivot about the first pivot axis 58 and thus position the first lower part 42 in the first plane 44 when folded (see Fig. 7). Two third joints 68, which are attached to the second lower part 46 via third articulated arms 70, also pivot about the second pivot axis 62. The third articulated arms 70 are designed such that the second lower part 46 is positioned in the second plane 48 (see Fig. 8). The first axis of rotation 58 and the second axis of rotation 62 extend in a common plane that is parallel to the plane of extension. First rotation axis 58 and second pivot axis 62 are parallel to each other and extend parallel to the long side of the inflow chamber 6 (see Fig.3).Due to the different second articulated arms 66 and third articulated arms 70, the connecting elements 74 of the lower parts 56, 60, designed as tongues 78 with openings 80, are laterally offset from one another in the folded state (transport position) (see Figs. 6 and 10) when the lower parts 56, 60 overlap, while in the assembled state (use position) they are positioned at approximately the same height (see Fig. 2). This allows the tongues 78 to serve as handles when unfolded, while the same height allows for easy connection of additional components. The recesses 29 on the first lower part 42 and on the second lower part 46 are designed such that the gas connection 26 protrudes through the recesses 29 when folded.Thus, even when folded, the gas connection 26 can be used to connect to a gas reservoir, or a suitably mounted gas supply hose can remain connected to the gas connection 26 when folded and in the folded state. In the transport position, the gas cooker 2 is extremely compact and easy to transport, particularly in a flat bag. In particular, the gas cooker 2 can be used as a camping cooker. Fig. 13 shows the gas cooker 2 in a perspective view in the assembled state. To avoid repetition, reference is made to the description of Figs. 1 to 12, where only the differences to the above figures are highlighted. In Fig. 13, the gas cooker 2 is assembled and provided with two attachments 72. These have openings 82, via which the attachments 72 are hooked into the recesses 76 of the upper parts 30.At the same time, the attachments 72 have projections 84 with which the attachments 72 are hooked into the openings 80 of the projections 78 of the lower parts 28. A clamping connection between the attachments 72 and the upper parts 30 in the area of ​​the recesses 76 in the upper parts 30 releasably secures the attachments 72 to the gas cooker 2. The formation of the clamping connection is simplified by the narrowing cross-section of the recesses 76 (see, for example, Fig. 5). The attachments 72 lead to further stabilization of the gas cooker 2. The attachments 72 also have cookware support surfaces 36, which are separated from one another by recesses 86 and are at the same level as the cookware support surfaces 36 of the upper parts 30. This can further improve the stability of the cookware on the gas cooker 2.At the same time, the recesses 86 offer the possibility of, for example, placing skewers (not shown here) on them and thus cooking a food in a rotating manner. In addition, the attachments 72 improve the wind protection. Figs. 14 to 20 show various views of a lid 88 for use with the gas cooker according to the following invention. Fig. 14 shows a perspective view of a lid 88 (cover) without the gas cooker, while Fig. 15 shows an exploded view of the lid 88 without the gas cooker. Fig. 16 shows the assembled lid 88 in a bottom view without the gas cooker. Figs. 17 to 20 show perspective views of the lid 88 with gas cooker 2 in various stages of assembly of the gas cooker 2 in the lid 88. For the description of the gas cooker 2, in order to avoid repetition, reference is made to the above description of Figs. 1 to 13, which show the gas cooker 2.Figures 14 to 16 are described together below unless explicit reference is made to one of these figures. Figure 14 shows the assembled cover 88 in a perspective view. This consists of a cover plate 90, two first side parts 92 and two second side parts 94, all of which are made of a metallic material, for example stainless steel, in particular a stainless steel sheet. The first side parts 92 are mirror-symmetrical to one another. The second side parts 94 are identical. As shown in particular in Figure 15, the cover plate 90 has a circumferential edge 96 which has two first edge sides 98 facing the first side parts 92 and two second edge sides 100 facing the second side parts 94. The first edge sides 98 have two first L-shaped projections 102 opposite one another, which extend in the plane in which the ceiling plate 90 lies.The first L-shaped projections 102 are pushed into corresponding L-shaped recesses 104 to connect the ceiling plate 90 to the first side parts 92, so that the first L-shaped projections 102 are positively secured to the first L-shaped recesses 104 (see Fig. 14). At the same time, the ceiling plate 90 has two opposing second L-shaped projections 106 on the first edge side 98, which correspond to wedge-shaped openings 108 in the first side parts 92, so that the second L-shaped projections 106 can be pushed into the wider area of ​​the corresponding wedge-shaped opening 108 and then clamped in place by a relative movement towards the narrower area of ​​the corresponding wedge-shaped opening 108. On the second edge sides 100, the cover plate 90 has two tongues 110 each, which pass through corresponding openings 112 in the second side parts 94 when the cover 88 is assembled.At the same time, the second side parts 94 have first connecting slots 114 on the edge, which correspond to second connecting slots 116 in the first side parts 92 and which can be pushed into one another to form a positive connection, so that the first side parts 92 can be connected accordingly to the second side parts 94. In order to be able to establish the connection between the tongues 110 and the openings 112 at the same time, the openings 112 are formed in two partial areas 120 separated from one another by a slot 118. The slot 118 allows a spring movement of the partial areas 120 when the first connecting slots 114 of the second side parts 94 are pushed into the second connecting slots 116 of the first side parts 92. The construction of the cover 88 from the side parts 92, 94 made of sheet metal and the cover plate 90 makes the cover 88 easy to transport.As described here, it can be easily assembled and just as easily disassembled and transported in a flat bag. For connection to the gas cooker, the cover plate 90 has two edge recesses 122 and a central recess 124. The gas cooker is mounted to the lid 88 through the edge recesses 122 and the central recess 124, as described below with reference to Figures 17 to 20, which show different stages in the assembly of the gas cooker 2 to the lid 88. First, the gas cooker 2 is positioned inside the assembled lid 88 so that the foot elements 4 of the lower parts 28 point in the direction of the edge recesses 122, and then the gas cooker 2 is moved in an insertion direction 126 such that all foot elements 4 pass through the edge recesses 122 (Figure 17). The non-visible areas of the gas cooker 2 are shown in dashed lines in Figures 17 to 20.The gas cooker 2 is then moved further in the insertion direction 126 until the second main side 10 of the inflow chamber 6 rests against the ceiling plate 90 of the lid 88 (Fig. 18). The gas connection 26 protrudes through the central recess 124 of the ceiling plate 90. The first main side 8, through which the flames emerge during operation of the gas cooker 2, is thus directed into the interior of the lid 88. The lower parts 28, 42, 46 are then pivoted, as described above, until the gas cooker 2 is folded together with respect to its lower parts 28. This fixes the ceiling plate 90 between the first lower part 42 and the second main side 10 of the inflow chamber 6 (Fig. 19). The second lower part 46 comes to lie on the other side of the first lower part 42, as shown, for example, in Figs. 7 and 8 and described above. For this purpose, the second joints 64 and third joints 68 described above (see Fig.7 and 8) is designed so that, in the folded state, a corresponding distance exists between the first lower part 42 and the second main side 10. This is shown in detail in Fig. 21 and described below. Subsequently, a gas supply hose 128 connected to a gas reservoir (not shown) is connected to the gas connection 26 of the gas cooker 2 via a corresponding coupling 130 (Fig. 20). The gas cooker 2 is now ready for use. During operation, the gas cooker 2 releases heat into the interior of the lid 88. If this lid 88 with the gas cooker 2 is positioned over a cooking area with bottom heat, for example a grill, preferably a gas grill as described in DE 102018109739 A1, the gas cooker 2 can provide top heat. This makes it possible to cook food on a grill with both bottom heat and top heat simultaneously. At the same time, the cover 88 reduces heat loss.This enables significantly higher cooking temperatures, for example 700 degrees Celsius and more, and in particular 800 degrees Celsius and more. By increasing the cooking temperature, other reactions can take place in the food, in particular other Maillard and roasting reactions, which lead to aromas in the cooked food that would otherwise be difficult to achieve. In particular, a steak with special roasted aromas can be cooked in this way. Fig. 21 shows a detail of the gas cooker 2 installed on the lid 88. The sequence of the second main side 10 of the inflow chamber 6 with the ceiling plate 90 of the lid 88 above it can be seen. The first lower part 42 and the second lower part 46 rest against the ceiling plate 90. When folded together, there is a gap 132 between the first lower part 42 and the second main side 10.Figures 22 to 25 show various possible uses of the gas cooker 2 according to the invention, which are described below. Figure 22 shows an example in which the gas cooker 2 is fixed in a tabletop 134 of a table 136. The tabletop 134 has recesses 138 for this purpose, which correspond to the edge recesses 122 and central recess 124 shown and described above. The gas cooker 2 is secured to the tabletop 134 as described above for the lid 88. This ensures that the gas cooker 2 stands stably in the tabletop 134. The table 136 comprises an additional plate 140 on which a gas reservoir 142 can be placed, which is connected to the gas connection 26 of the gas cooker 2 via a hose (not shown). Fig. 23 shows another example of the use of the gas cooker 2. This serves as a top heat source for a cooking utensil 144.This does not rest on the cookware support surface 36; rather, the gas cooker 2 is held in an attachment 146 in which the gas cooker 2 is suspended. The attachment 146 also has recesses 148 for this purpose, which correspond to the central recess 124 and the edge recesses 122 as shown and described above for the lid. The gas cooker 2 is mounted on the attachment 146 as described above for the lid 88. The attachment 146 can be placed on a tabletop 134 of a table 136—or any other surface that does not have to be specifically adapted to the gas cooker 2. The gas connection 26 (not visible here) of the gas cooker 2 is connected to a gas reservoir 142 via the gas supply hose 128 and the coupling 130. Fig.24 shows another example of the use of the gas cooker 2 in a grill device 150 as described in DE 102018108739 A1.The gas cooker 2 can be used here as a heat source or to increase the heat output of the grill device 150. Fig. 25 shows another example of the use of the gas cooker 2. Here, it is mounted on a tabletop 134 of a table 136, whereby the tabletop 134 is not specifically adapted to the gas cooker 2. Instead of the tabletop 134, the use can also take place on any other surface. The cookware 144, which is heated by the gas cooker 2, is placed on the cookware support surface 36 of the upper parts 30 of the gas cooker 2. The gas cooker 2 acts here as a bottom heat source. The gas cooker 2 is connected to a gas reservoir 142 via a gas supply hose 128. The gas cooker 2 claimed here is thus modularly expandable and can be easily detachably connected to a variety of components.These components were shown here as examples and include the lid 88, the table 136, the attachment 146, and the grill device 150, as well as many other components. The gas cooker 2 is collapsible and thus space-saving. This makes the gas cooker 2 easy to transport and requires little space for storage. Furthermore, the gas cooker 2 is characterized by the fact that the perforations 14, through which the combustible gas passes as a flame, are directed directly toward the cookware 144 or the food to be cooked. This ensures efficient heating of the food to be cooked.

[0002] List of reference symbols 2 Gas cooker 4 Base element 6 Inflow chamber 8 First main side 10 Second main side 11 Extension plane 12 Edge side 14 Perforation 16 Interior of the inflow chamber 18 Area above the first main side 20 Edge area of ​​the first main side 22 Central area of ​​the first main side 24 Gas inflow opening 26 Gas connection 28 Lower part 29 Recess 30 Upper part 32 Upper edge 34 Recess 36 Cookware support surface 38 Joint 40 First level of the upper parts 42 First lower part 44 Second level of the first lower part 46 Second lower part 48 Third level of the second lower part 50 First joint 52 First articulated arm 54 Pivot axis 56 First upper part 58 First pivot axis 60 Second upper part 62 Second pivot axis 64 Second joint 66 Second articulated arm 68 Third joint 70 Third articulated arm 72 Attachment 74 Connecting element 76 Recess 78 Projection 80 Opening 82 Opening 84 Projection 86 Recess 88 Cover 90 Ceiling plate 92 First side part 94 Second side part 96Edge 98 First edge side 100 Second edge side 102 First L-shaped projection 104 L-shaped recess 106 Second L-shaped projection 108 Wedge-shaped opening 110 Tongue 112 Opening 114 First connecting slot 116 Second connecting slot 118 Slot 120 Partial area 122 Edge recess 124 Central recess 126 Insertion direction 128 Gas supply hose 130 Coupling 132 Distance 134 Table top 136 Table 138 Recesses 140 Additional plate 142 Gas reservoir 144 Cookware 146 Top 148 Recesses 150 Grill device

Claims

Claims 1. Gas cooker (2), comprising a plate-shaped inflow chamber (6), with a first main side (8) and a second main side (10) opposite the first main side (8), which are connected to one another via edge sides (12), wherein the first main side (8) has perforations (14) for the flow through of a combustible gas and / or a combustible air-gas mixture and the second main side (10) and / or an edge side (12) has a gas inflow opening (24) for detachable connection to a gas reservoir (142), and upper parts (30, 56, 60) and lower parts (28, 42, 46) are mounted on the inflow chamber (6) and are each pivotable about a pivot axis (54, 58, 62), which are each pivotable between a transport position and a use position, wherein the free, lower ends of the lower parts (28, 42, 46) in the position of use form at least one foot element (4) for setting up the gas cooker (2) on a base and the free,upper ends of the upper parts (30, 56, 60) form a plurality of cookware support surfaces (36) which, in the use position of the upper parts (30, 56, 60), span a common plane, wherein this common plane is arranged outside and at a distance from the inflow chamber (6) such that the first main side (8) faces the common plane, wherein the upper parts (30, 56, 60) and the lower parts (28, 42, 46) extend in the direction of the main sides (8, 10) of the inflow chamber (6) in their transport position.

2. Gas cooker according to claim 1, wherein the upper parts (30, 56, 60) and / or the lower parts (28, 42, 46) are flat, in particular plate-shaped.

3. Gas cooker according to claim 1 or 2, wherein the upper parts (30, 56, 60) are movable into their transport position by being pivoted towards each other in opposite directions and / or the lower parts (28, 42, 46) are movable into their transport position,by pivoting them in opposite directions toward each other.

4. Gas cooker according to one of the preceding claims 1 to 3, in which the main sides (8, 10) of the inflow chamber (6) have a rectangular shape.

5. Gas cooker according to one of the preceding claims 1 to 4, in which the upper parts (30, 56, 60) and the lower parts (28, 42, 46) abut the inflow chamber (6) and / or each other in their transport position, and the lower parts (28, 42, 46) abut the inflow chamber (6) and / or each other in their transport position.

6. Gas cooker according to one of the preceding claims 1 to 5, in which only two upper parts (30, 56, 60) and two lower parts (28, 42, 46) are provided.

7. Gas cooker according to one of the preceding claims 1 to 6, in which, in their transport position, the upper parts (30, 56, 60) lie in one plane and / or the lower parts (28, 42, 46) lie in one plane.

8. Gas cooker according to one of the preceding claims 1 to 7, in which, in their transport position, the upper parts (30, 56, 60) and / or the lower parts (28, 42, 46) overlap.

9. Gas cooker according to one of the preceding claims 1 to 8, in which the pivot axes (54, 58, 62) run parallel to one another or congruent.

10. Gas cooker according to one of the preceding claims 1 to 9, wherein the pivot axis (54, 58, 62) of each upper part (30, 56, 60) coincides with the pivot axis (54, 58, 62) of a lower part (28, 42, 46).Gas cooker according to one of the preceding claims 1 to 10, in which the first main side (8) of the inflow chamber (6) is curved in at least one direction, in particular outwards.

12. Gas cooker according to one of the preceding claims 1 to 11, in which at least one lower part (28, 42, 46) in the transport position rests against the second main side (10) and / or at least partially covers it and / or in which at least one upper part (30, 56, 60) in the transport position rests against the first main side (8) and / or at least partially covers it.

13. Gas cooker according to one of the preceding claims 1 to 12, in which, in the transport position, a distance (132) remains between a lower part (42) positioned closest to the second main side (10) and the second main side (10).Gas cooker according to one of the preceding claims 1 to 13, in which the lower parts (28, 42, 46) have recesses (29) between which the gas inlet opening (24) is accessible in the transport position.

15. Gas cooker according to one of the preceding claims 1 to 14, in which at least one projection (78) is formed on each lower part (28, 42, 46), which protrudes laterally from the corresponding lower part (28, 42, 46) in the direction of the pivot axis (54, 58, 62) of the respective lower part (28, 42, 46).

16. A gas cooker according to claim 15, wherein the lower parts (28, 42, 46) overlap in their transport position, and the projections (78) of two lower parts (28, 42, 46) are positioned offset from one another in the transport position.

17. A gas cooker according to any one of the preceding claims 1 to 16, further comprising at least one attachment (72) and connecting elements (74) formed on the lower parts (28, 42, 46) and the upper parts (30, 56, 60) for releasably fastening the attachment (72) thereto in order to secure the lower parts (28, 42, 46) and the upper parts (30, 56, 60) in the use position.Gas cooker according to the preceding claim 17, wherein the attachment part (72) and the connecting elements (74) are designed such that on one side of the gas cooker (2) between the attachment part (72) and the lower parts (28, 42, 46) and between the attachment part (72) and the upper parts (30, 56, 60) a detachable plug-in connection is produced by connecting in an associated plug-in direction, and the associated plug-in direction of the upper parts (30, 56, 60) runs orthogonally to the associated plug-in direction of the lower parts (28, 42, 46).

19. Gas cooker according to one of the two preceding claims 17 and 18, wherein a locking position of the detachable plug-in connection between the attachment part (72) and the lower parts (28, 42, 46) is achieved only by pivoting the lower parts (28, 42, 46) and subsequently by simultaneously plugging the attachment part (72) into the upper parts (30, 56, 60).Gas cooker according to one of the preceding claims 1 to 19, wherein the at least one attachment (72) forms at least one further cookware support (36).

21. Arrangement comprising a cover (88) and a gas cooker (2) according to one of claims 1 to 20, which is secured to the cover (88).

22. Arrangement according to claim 21, wherein the gas cooker (2) is secured to the cover (88) by the lower parts (28, 42, 46) in their transport position.

23. Arrangement according to one of the preceding claims 21 and 22, wherein the second main side (10) of the gas cooker (2) rests against the underside of the cover (88).

24. Arrangement according to one of the preceding claims 21 to 23, wherein the cover (88) has a plurality of recesses (122) through which the lower parts (28, 42, 46) are guided before they are pivoted into their transport position. 25.Arrangement according to one of the preceding claims 21 to 24, wherein the gas inflow opening (24) of the gas cooker (2) is accessible through a recess (124) in the cover (88).

26. Arrangement according to one of the preceding claims 21 to 26, wherein the cover (88) forms a foldable or removable lid of a grill device.

27. Arrangement according to claim 26, wherein the cover (88) is formed from a plurality of sheet metal plates (92, 90) which are connected to one another by plug-in connections.

28. Arrangement according to claim 27, wherein the cover (88) has a plurality of side parts (92) and at least one upper cover plate (90) to which the gas cooker (2) is attached.

29. Arrangement according to claim 28, wherein the upper cover plate (90) is flat.

30. Grilling device, in particular a charcoal or gas grill, comprising an arrangement according to one of claims 21 to 29, wherein the gas cooker (2) is fixed to an upper cover (88) of the grilling device such that the first main side (8) with the perforations (14) points downwards in the direction of a grilled item.

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