Grill-oven combination

Abstract

A grill-oven combination (1) for the thermal preparation of food is presented, which is detachably assembled from a plurality of segments (11) forming an oven base plate (2) and an oven body (3), wherein the oven body (3) has at least one lateral, closable loading opening (14) and a top opening (6). The grill-oven combination (1) should be easy to handle yet offer high stability thanks to its segmented design. Furthermore, the grill-oven combination (1) should be easily heated using only one burner, allowing for simultaneous food preparation in the oven and on the grill. This is achieved by the fact that - the segments (11) each comprise a segment bottom part (12) and a segment side part (13) formed in one piece with it, - the segment bottom parts (12) end at their free end (16) in such a way that, in the assembled state, a hole (17) is formed in the center of the oven floor plate (2), - a lower box (25) with a lateral lower box opening (19) is provided under the entire surface of the oven floor plate (2) for receiving embers and ash falling through the hole (17), - a full-surface grill plate (6a) is inserted into the upper opening (6), which in turn is provided with a central grill plate opening (7) positioned above the hole (17), into which a vertical shaft (8) ending at a distance above the hole (17), open at the bottom, can be suspended for receiving fuel. A method for heating such a grill-oven combination (1) is also given.

Description

[0001] The invention relates to a grill-oven combination.

[0002] In the leisure area, garden pavilions or so-called grill kotas are used (sometimes in combination with saunas), in the middle of which fire pits with grilling function are arranged, often surrounded by seating.

[0003] Examples of this can be found on the internet, e.g. from: https: / / de.wikipedia.orq / wiki / Grillkota (D1), Researched on April 11, 2025.

[0004] The fire pits in the familiar grill cabins only offer the possibility of grilling over an open fire. There is a desire to also allow other thermal cooking methods in grill cabins, such as baking or boiling.

[0005] From DE 20 2017 103 369 U1 (D2) a grill-oven combination with the features of the preamble of claim 1 is known, which enables several methods of thermal food preparation. In the area of ​​the outer circumference of the oven floor plate, there is a trough-shaped depression that adjoins the oven body. Fuel can be burned on the oven floor plate and the resulting embers can then be pushed into the trough-shaped depression, so that the oven floor plate is then free to prepare food (e.g. pizzas) on it, while simultaneously receiving further heat from the embers.

[0006] Furthermore, the well-known grill-oven combination features a fire bowl positioned centrally within the oven body, adjustable in height via a rack and pinion mechanism. This second combustion chamber heats the upper opening in the oven body, allowing for grilling or cooking above it, with the adjustable height of the fire bowl enabling control of the heat output in the opening area.

[0007] Heating this well-known grill-oven combination is complex, as two separate combustion chambers – the oven floor plate or trough-shaped depression on the one hand and the height-adjustable firebox on the other – must be operated to fully fulfill its function (grilling and baking).

[0008] Furthermore, a compromise must be found between handling and stability in the well-known grill-oven combination. If the oven base plate and oven body are each made from a single piece, the grill-oven combination is indeed very stable, but the considerable weight of these components makes handling difficult. If, on the other hand, the oven base plate and oven body are each detachably assembled from several individual segments, as alternatively revealed, handling is indeed easier, but the stability of the construction suffers with an increasing number of individual segments.

[0009] The object of the invention is to produce an easy-to-handle yet stable grill-oven combination for simultaneous food preparation in the oven and on the grill with simplified heating options, and to provide a method for simple heating of the grill-oven combination.

[0010] The problem is solved by the fact that the grill-oven combination according to the invention, in addition to the features of the preamble of claim 1, also has its characterizing features and that the grill-oven combination according to the invention is heated according to the method of claim 10.

[0011] Because the grill-oven combination according to the invention consists of a plurality of segments with a one-piece formed segment base and segment side, each segment is able to stand stably on its own base without having to be supported by another component. According to this principle, it is possible to detachably assemble the grill-oven combination from almost any number of segments (but at least two) into a self-contained, stable structure, i.e., without mortar or adhesive, which can be easily transported for use elsewhere after disassembly without tools.

[0012] According to the invention, the segment bottom parts end at their free end in such a way that, in the assembled state of the segments, a central hole is formed in the oven floor plate.

[0013] Fuel can protrude through this hole (e.g., logs) or fall through (e.g., embers) into the open-topped lower compartment located beneath the stove floor. Using a tool, such as a fire poker, embers that have fallen through or been actively pushed through can be distributed evenly within the lower compartment, thus heating the stove floor from below.

[0014] A full-surface grill plate is inserted into the upper opening of the oven body, and this grill plate opening is itself located centrally above the hole in the oven floor plate. A vertical chute can be suspended in the grill plate opening, ending at a distance above the hole. Fuel can be placed and burned in this chute without coming into contact with food (e.g., pizzas) cooking on the oven floor plate and thus without soiling or damaging it. Thanks to the inventive arrangement for guiding the fuel: grill plate opening – vertical chute – hole – base – it is possible to heat both the oven body and the grill plate on top with just one combustion chamber, and to prepare food both inside the oven and on the grill simultaneously.

[0015] Advantageous embodiments and further developments of the grill-oven combination according to claim 1 are characterized in claims 2 to 9.

[0016] Simple manufacturing of the segments is achieved when the segment base and side panels are flat. The body of the grill-oven combination must then logically consist of at least three segments, resulting in a triangular or polygonal truncated pyramid. However, curved shapes for the segments, especially the side panels, are also conceivable and manufacturable, resulting in a rounded body. In this case, the body of the grill-oven combination must consist of at least two segments. Segments are particularly stable when the angle between the segment base and side panel is between 45 and 90 degrees, preferably approximately 75°.

[0017] The stability of the grill-oven combination is enhanced if the segments have corresponding, form-fitting connecting edges or surfaces at their end faces, e.g. in the form of stepped connections, angle connections or tongue and groove connections.

[0018] Ideally, the grill-oven combination should consist of segments, each with a loading opening that can be closed with a lid. This allows several people to sit around the grill-oven combination, each with their own loading opening. Furthermore, this makes all segments identical, thus reducing costs. However, it is of course also possible to equip not all, but only some selected segments with a loading opening.

[0019] Advantageously, in the sense of simplified production of identical parts, each segment is provided with a thermometer bore, even if a separate thermometer does not need to be provided for each segment.

[0020] The base of the grill-oven combination can rest on a frame or a brick or cast-iron foundation. Particular stability of the construction is achieved when a flat base plate (e.g., made of sheet steel) sits on top of the base, upon which the segments are assembled. It is especially advantageous that the base plate's shape is adapted to the outer contour of the assembled segments and that the base plate has an upward-facing fold along its edges, thus facilitating a precise fit of the segments and preventing any subsequent unwanted shifting of the segments.

[0021] The flat base plate naturally requires a central opening (preferably with a larger diameter than the hole in the oven floor plate) for the supply of fuel to the lower box.

[0022] Advantageously, a holder mounted on the grill plate can be provided above the shaft, to which a high-temperature plate or grill grate can be attached in a height-adjustable manner, because the highest temperatures desired for short grilling prevail above the burning fire or embers.

[0023] Users find it pleasant and practical when shelves are provided around the grill-oven combination on which food or accessories, such as cutlery, dishes, drinking glasses or bottles, can be placed.

[0024] To make it easy to attach and remove these shelves, it is advantageous if they are equipped with hooks that allow them to be hung in the hook slots provided in the side walls of the base cabinet.

[0025] The second part of the problem outlined above is solved, as mentioned, by a method according to claim 10.

[0026] Accordingly, to start the fire, a fire is lit through at least one loading opening on the side of the oven floor plate and maintained (while the oven body heats up simultaneously) until sufficient embers have formed. These are then pushed through the hole into the lower box using a tool such as a fire hook. To facilitate this, the flue can be removed from the grill plate opening during this initial heating phase. However, it can also be suspended or remain in place if the embers are sufficiently small and the distance between the lower end of the flue and the floor plate is adequate.

[0027] Once this initial ember is in the lower box, with the shaft suspended in the grill plate opening and the high-temperature plate or grill grate removed if necessary, the shaft is filled with further fuel in such a way that the fuel comes into contact with the embers through the hole at the bottom, ignites and burns, which on the one hand further heats the oven body, and on the other hand creates more embers which then - guided by the shaft - fall by themselves through the hole into the lower box.

[0028] The embers in the lower box can be spread out using the tool, so that the entire oven floor plate is also heated from below.

[0029] By adding more fuel to the shaft, heating can be increased as needed.

[0030] The presence of the shaft during this firing phase also ensures that no fuel can fall sideways onto the oven floor plate and contaminate or damage food (e.g. pizzas) located there.

[0031] In this way, the grill-oven combination can be operated continuously for any length of time.

[0032] Further features, details and advantages of the invention will become apparent from the following description of an exemplary embodiment with the aid of a drawing.

[0033] They show: Fig. 1: A perspective view of the fully assembled grill-oven combination; Fig. 2: An exploded view of the grill-oven combination according to Fig. 1; Fig. 3: A perspective view of a single segment; Fig. 4: A perspective view of the not fully assembled grill-oven combination, allowing a glimpse into the oven body.

[0034] An embodiment of the grill-oven combination 1 according to the invention is shown in the Fig. 1, Fig. 2, Fig. 3 to Fig. Figure 4 shows that, to simplify the representation, identical components that occur multiple times are usually only marked with a reference symbol once.

[0035] The grill-oven combination 1 according to the preferred embodiment is hexagonal, as shown in the diagram. Fig. 1. It consists in its core of six identical segments 11, which – formed in one piece – comprise a flat segment base part 12 and a flat segment side part 13, see Fig. 2. and 3. In the case of a hexagonal design, the segment base part 12 covers one sixth of the oven base plate 2, i.e., one sixth of a full circle, meaning the segment angle β = 60° ( Fig. 3) Of course, other divisions are also possible: For example, in an octagonal design of the grill-oven combination 1, the segment angle β = 45°. If the segment side parts 13 are preferably designed to be flat, the grill-oven combination 1 must logically be at least triangular, i.e., β = 120°.

[0036] A curved version of the segment side parts 13 is also possible - not shown here - so that the oven body 3 in the assembled state results in a truncated cone or truncated sphere, which logically must consist of at least two segments 11.

[0037] The segments 11 according to the present embodiment are made of fireclay and can be manufactured in one piece by casting them in molds. A wall thickness of approximately 3 cm has proven advantageous, although other material thicknesses are of course conceivable in principle. The use of other refractory materials is also possible, e.g., ceramic or metallic materials such as cast iron, steel, or stainless steel. A multi-layered structure of segment 11 is also conceivable, e.g., a sandwich-like construction with a stainless steel outer skin, an insulating layer, and fireclay inside.

[0038] A single segment 11 is in Fig. Figure 3 shows in detail. As can be seen, the segment side part 13 is slightly inclined inwards relative to the segment bottom part 12. In the preferred embodiment shown, an inclination angle α of approximately 75° is provided, which results in excellent stability of the segment 11.

[0039] Of course, other inclination angles α can also be realized, taking into account that, in principle, with increasing inclination angle α (especially if α > 90°) the stability of segment 11 decreases, and with decreasing inclination angle α the usable interior space of the furnace body becomes smaller.

[0040] The side section 13 of the segment has a loading opening 14 through which the fire can be kindled and food placed in the oven body can be handled. The loading opening 14 can be covered with a lid 4 with a handle 5 (see figure). Fig. 2) be sealed to keep heat inside.

[0041] Furthermore, a thermometer bore 24 is provided in each segment side panel 13. Although not every segment 11 needs to be equipped with its own thermometer 24a during operation, each segment side panel 13 is nevertheless provided with a thermometer bore 24 for the purpose of simplifying the production of identical parts.

[0042] As from Fig. As can be seen further in Figure 3, the segment bottom part 12 does not end at a point at its free end 16, but rather bluntly. This shape ensures that, after all segments 11 are assembled, a hole 17 is formed in the center of the oven floor plate 2 in the assembled state, as can be seen in particular from Figure 3. Fig. As becomes clear in Figure 4. Through this hole 17, embers can fall downwards into the open-topped lower box 25 located beneath the oven floor plate 2 during operation of the grill-oven combination 1. These fallen embers can be spread evenly across the bottom of the lower box 25 using a tool (pounder, etc.), thus continuously heating the oven floor plate 2 during operation.

[0043] Finally, there are at the in Fig. Segment 11, as shown in Figure 3, has 15 stepped connecting edges at its end faces. As detailed in Figure Z... Fig. Figure 2 shows that the steps of the connecting edges on the opposite end faces are designed in such a way that when the furnace body 3 is assembled, one end face of one segment 11 joins with the corresponding other end face of the adjacent segment 11 in the form of a step connection.

[0044] This type of toothing increases the stability of the furnace body 3. Of course, other toothing options known and commonly used in standard technical drawings can also be employed, such as Z-toothing, tongue and groove connections, etc.

[0045] Below the oven floor plate 2, as mentioned, a lower box 25 is provided, which rests on a foundation or frame (not shown) and may be made of sheet steel. The lower box 25 has an opening 19 that can be closed with a flap 20, through which embers in the lower box 25 can be manipulated and ash removed.

[0046] The side walls of the base 25 have hook slots 29, preferably located near the corners. In this exemplary embodiment, two hook slots 29 are advantageously arranged one above the other (a different number of hook slots 29 is also possible). The hook slots 29 serve to receive hooks 28 arranged laterally on shelves 27 for attaching the shelves 27 to the base 25. The shelves 27, advantageously made of sheet steel, can be arranged in any number (a maximum of six in this exemplary embodiment) and position around the grill-oven combination 1 and serve for placing food, glasses, bottles, and other grilling accessories. The shelves 27 can be easily hooked into and removed from the base 25 using the hooks 28.

[0047] The side walls of the lower box 25 have a circumferential rebate 18 at the top, on which, depending on the design, either the segments 11 are arranged directly or with the interposition of a base plate 21.

[0048] The preferred design with base plate 21 has the advantage of simplified assembly of the segments 11 to form the furnace body 3 and increased stability. The base plate 21 has a central opening 23 with a larger diameter than the hole 17 in the furnace bottom plate 2 and can be manufactured from sheet steel or cast iron, optionally in one piece or, as shown here, in two parts. The latter has the advantage of better material utilization, since the legs of the half-base plate 21 can be cut from a sheet of metal and nested inside one another.

[0049] The base plate 21 is adapted to the outer contour of the assembled segments 11, i.e., the basic shape of the base plate 21 corresponds to the shape of the oven floor plate 2. The base plate 21 is provided with a circumferential upward-facing rebate 22. On the base plate 21, the individual segments 11 can be easily assembled within the circumferential rebate 22 to form the oven body 3, the circumferential rebate 22 preventing the individual segments 11 from shifting laterally.

[0050] If the stability requirements for the grill-oven combination 1 are reduced, the base plate 21 can be omitted in a simpler version. The segments 11 are then arranged directly on the groove 18, and it may be advantageous to widen this groove.

[0051] The oven body 3 is bounded at the top by a full-surface grill plate 6a inserted into the upper opening. For this purpose, a stepped recess 26 is provided at the upper edges of the segments 11 ( Fig. 2, Fig. 3, Fig. 4) incorporated, on which the grill plate 6a rests and which surrounds it at the ends.

[0052] The grill plate can be made of sheet steel or cast iron and can optionally be a single piece, as shown in the Fig. 1 and Fig. 2 shown, or two-part, as in Fig. 4 shown.

[0053] In the center of the grill plate 6a, above the hole 17 in the oven base plate 2, a grill plate opening 7 is provided. In this exemplary embodiment, this opening is advantageously rectangular, but it can also be square or round. The grill plate opening 7 has a lateral recess into which a holder 9 for a high-temperature plate 10 or a grill grate (not shown here) can be inserted. By arranging the high-temperature plate 10 or the grill grate above the grill plate opening 7, the high temperatures required for short grilling can be achieved.

[0054] The holder 9 can be easily manufactured from a section of U-steel into which slots are cut, for attachment to the grill plate 6a on the one hand and for holding the high-temperature plate 10 or the grill grate on the other, as shown in the Fig. 1, Fig. 2 and Fig. As becomes clear in section 4. Slots at different heights allow the high-temperature plate 10 or the grill grate to be positioned higher or lower, thus influencing the grilling temperature.

[0055] A shaft 8, designed to hold fuel, can be inserted into the grill plate opening 7. This shaft has a base plan corresponding to the grill plate opening 7 (rectangular here), allowing it to be lowered through the opening. The shaft 8 has a right-angled folded edge 8a at the top, which, after the shaft 8 is inserted into the grill plate opening 7, rests on the grill plate 6a and thus prevents the shaft 8 from falling through. The height h (see figure) Fig. 2) The shaft 8 is dimensioned such that the inserted shaft 8 ends at a specified distance above the furnace floor plate 2. The shaft 8 is open at the bottom and has lateral slots for air supply.

[0056] The functional relationships during the operation of the grill-oven combination 1 according to the invention are further clarified by the following description of a method for heating it, which can be done with both logs and charcoal or charcoal briquettes.

[0057] First, a fire is lit on the oven floor plate 2, to the side of the hole 17, through a side loading opening 14 and maintained until sufficient embers have formed. These embers are then pushed into the hole 17 using a tool and fall into the lower box 25. This first heating phase is ended by cleaning the oven floor plate 2 of embers and ash residue (through the hole 17) so that food (e.g., pizzas) can be prepared on it.

[0058] During the first heating phase described above, shaft 8 can either be removed or already in place, depending primarily on the design-defined distance between the lower end of the shaft and the oven floor plate 2: If a large distance is designed, it is possible to push embers into hole 17 using the tool, even with shaft 8 in place – the tool and embers will fit under the end of the shaft. If only a small distance is designed, shaft 8 must be removed for the initial heating and can only be inserted at the beginning of the second heating phase.

[0059] In this second heating phase, fuel is poured into shaft 8 from above. This fuel falls through shaft 8 and hole 17 onto the embers in the lower box 25, ignites, and burns, producing further embers. The embers, guided by shaft 8, fall by themselves through hole 17 into the lower box 25. Shaft 8 prevents fuel or embers from falling laterally onto the oven floor plate 2 and soiling or damaging any food placed there. For this effect, a small distance between the end of the shaft and the oven floor plate 2 is advantageous, while a larger distance facilitates the manipulation of embers and ash within the oven body 3 using tools.

[0060] The embers that have fallen into the lower box 25 or been pushed in by means of the tool are now – with the shelf 27 removed – distributed evenly across the bottom of the lower box 25 through the lower box opening 19. This means that the oven floor plate 2 is also heated from below, which has a beneficial effect on the temperature distribution in the grill-oven combination 1.

[0061] In a third or continuous heating phase, shaft 8 is constantly replenished with additional fuel as needed, and the embers that have fallen through into the lower box 25 are redistributed. This allows the grill-oven combination 1 to be fully heated for any length of time using only one combustion chamber. Reference symbol list 1 Grill-Oven Combination 2 Oven floor plate 3 4 Oven body lid 5 Handle 6a Grill plate 7 Grill plate opening 8 shaft 8a folded edge 9 holders 10 High-temperature plates 11 Segment 12-segment floor section 13 Segment side panel 14 Loading opening 15 front end 16 free (blunt) end 17 holes 18 fold 19 Lower box opening 20 flap 21 Base plate 22 fold 23 Passage 24 Thermometer bore 24a Thermometer 25 Base cabinets 26 recess 27 Filing 28 hooks 29 hook slots α Angle of inclination β Segment angle h height Z Detail

Claims

[1] Grill-oven combination (1) for thermally preparing food, which is detachably assembled from a plurality of segments (11) forming an oven base plate (2) and an oven body (3), wherein the oven body (3) has at least one lateral, closable loading opening (14) and a top opening, characterized by , that - the segments (11) each comprise a segment bottom part (12) and a segment side part (13) formed in one piece with it, - the segment bottom parts (12) end at their free end (16) in such a way that, in the assembled state, a hole (17) is formed in the center of the oven floor plate (2), - under the oven floor plate (2) a lower box (25) with a lateral lower box opening (19) and open at the top is provided for receiving embers and ash falling through the hole (17), - a full-surface grill plate (6a) is inserted into the upper opening, which in turn is provided with a central grill plate opening (7) positioned above the hole (17), into which a vertical shaft (8) ending at a distance above the hole (17), open at the bottom, can be suspended for receiving fuel. [2] Grill-oven combination (1) according to claim 1, characterized by , that the segment bottom parts (12) and segment side parts (13) are flat, wherein the segment bottom part (12) and segment side part (13) enclose an angle of inclination (α) between 45° and 90°, preferably approximately 75°. [3] Grill-oven combination (1) according to claim 1 or 2, characterized by , that for the detachable connection of the segments (11) to each other, these have corresponding, form-fitting connecting edges or connecting surfaces at the end faces (15). [4] Grill-oven combination (1) according to any one of the preceding claims 1 to 3, characterized by, that each segment (11) has a side loading opening (14) which can be closed with a lid (4). [5] Grill-oven combination (1) according to any one of the preceding claims 1 to 4, characterized by , that thermometer bores (24) are provided in the segment side parts (13) through which a thermometer (24a) can be inserted into the interior of the furnace body (3). [6] Grill-oven combination (1) according to any one of the preceding claims 1 to 5, characterized by , that the lower box (25) sits on a foundation or frame and a flat base plate (21) with an upwardly facing outer rebate (22) and a central opening (23) of a larger diameter than the hole (17) rests on top of the lower box (25), on which base plate (21) the majority of segments (11) are assembled, wherein the shape and rebate (22) of the base plate (21) are adapted to the outer contour of the assembled segments (11). [7] Grill-oven combination (1) according to any one of the preceding claims 1 to 6, characterized by , that a holder (9) mounted on the grill plate (6a) is provided, to which a high-temperature plate (10) or a grill grate can be attached in a height-adjustable manner above the grill plate opening (7). [8] Grill-oven combination (1) according to any one of the preceding claims 1 to 7, characterized by , that shelves (27) for storing food and accessories are arranged around the grill-oven combination (1). [9] Grill-oven combination (1) according to the preceding claim 8, characterized by , that the shelves (27) have hooks (28) with which they can be hooked into hook slots (29) in the side walls of the lower box (25). [10] Method for heating a grill-oven combination (1) according to any one of the preceding claims 1 to 9, characterized by , that - first, a fire is lit to the side of the hole (17) on the furnace floor plate (2) through at least one lateral loading opening (14), - after embers have formed, they are pushed through the hole (17) into the lower box (25) using a tool, - with the shaft (8) suspended, it is filled from above with additional fuel so that it protrudes through the hole (17) into the lower box (25) and is ignited by the embers, - after further burning with ember formation, the embers that have fallen into the lower box (25) are spread over a surface using the tool, - to further maintain the heating system, additional fuel is poured into the shaft (8) from above.

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