Stackable baking tray for baking pasta and a stack containing a first and second such baking tray
The stackable oven tray design with offset locking elements addresses air circulation issues, enabling stable stacking and improved baking results by maintaining airflow.
Patent Information
- Application Number
- DE202023104565
- Authority / Receiving Office
- DE · DE
- Patent Type
- Utility models
- Current Assignee / Owner
- Filing Date
- 2023-08-11
- Publication Date
- 2024-12-19
- Estimated Expiration
- 2033-08-31
AI Technical Summary
Existing oven trays inhibit air circulation when stacked, leading to a negative impact on baking results, especially when multiple trays are used simultaneously.
A stackable oven tray design featuring offset locking elements that allow trays to be rotated and stacked at a predetermined angle, promoting stable stacking and improved air circulation.
Enhances baking performance by allowing multiple trays to be stacked without obstructing air flow, resulting in a better baking outcome.
Smart Images
Figure 00000000_0000_ABST
Abstract
Description
[0001] The invention relates to a stackable baking tray for baking pasta, such as pizza, cakes, bread and rolls, as well as a stack comprising a first and at least one second such baking tray.
[0002] Nowadays, baking trays come in a wide variety of shapes for baking pasta in an oven. To prepare large portions of food at once, for example, at a party, it's desirable to place several baking trays in the oven at the same time. This is usually achieved by using baking trays that correspond to the oven's rail system. The disadvantage of this is that only a certain number of baking trays can be inserted into the oven, and too many baking trays severely restrict air circulation, which negatively impacts the baking results.
[0003] It is therefore the object of the present invention to create an oven tray which avoids these disadvantages and provides a better baking result.
[0004] This object is achieved by a stackable oven tray according to independent claim 1 and by a stack of a first and at least one second oven tray according to claim 20. Advantageous developments of the stackable oven tray are specified in claims 2 to 19. Claim 21 describes an advantageous development of the stack of the first and at least one second oven tray.
[0005] The stackable baking tray according to the invention is preferably used for baking pasta, but can also be used for preparing other foods, such as meat, fish, and / or vegetables. The baking tray comprises a base and a surrounding wall that extends from the base and, together with the base, defines a receiving space for the pasta to be baked. The baking tray comprises a first upper locking element arranged on an upper side of the surrounding wall, spaced from the base. The baking tray further comprises a first lower locking element arranged on an underside of the base.The first upper locking element and the first lower locking element are arranged offset from a center of the oven tray in a plan view of the oven tray, whereby the oven tray can be placed with its first lower locking element on a first upper locking element of another oven tray, rotated relative to the latter. The wording "offset by a predetermined angle of rotation" is to be understood as meaning that the first upper locking element and the first lower locking element are offset from one another by a section that preferably runs on a circular path around the center. This allows an oven tray to be rotated in a plane that runs parallel to the floor of the oven in order to be placed on another oven tray. The floor of one oven tray runs parallel to the floor of the other oven tray.Preferably, the upper locking element of the lower oven tray engages with the lower locking element of the upper oven tray. This allows the oven trays to have different rotational or angular positions, which promotes air circulation in the oven, while also allowing them to be stacked securely on top of each other.
[0006] In an advantageous further development of the oven tray, the surrounding wall extends vertically from the floor.
[0007] In an advantageous development, the angle of rotation is greater than 30°, 35°, 40°, 45°, 50°, 55°, or 60°. More preferably, the angle of rotation is less than 65°, 55°, 50°, 45°, 40°, or 35°. The angle of rotation is preferably 45°. This means that the upper oven tray can be placed on the lower oven tray rotated by 45°.
[0008] In an advantageous further development, the angle of rotation is not equal to 180° and not equal to 360°.
[0009] In an advantageous development, the oven tray comprises a second upper locking element which is arranged on the upper side of the circumferential wall, spaced from the base, wherein the first and second upper locking elements are arranged at a distance from one another. The oven tray comprises a second lower locking element which is arranged at a distance from the first lower locking element on the underside of the base. In a plan view of the oven tray, the second upper locking element and the second lower locking element are arranged offset from one another by the predetermined angle of rotation from the center of the oven tray, whereby the oven tray can be placed with its second lower locking element onto a second upper locking element of another oven tray in a rotated manner relative to the latter.By using two upper locking elements and two lower locking elements, two oven trays can be placed on top of each other more securely.
[0010] In an advantageous development, the shape of the first lower locking element corresponds to the shape of the first upper locking element. Additionally or alternatively, the shape of the second lower locking element corresponds to the shape of the second upper locking element. This means that one locking element can engage with the other corresponding locking element.
[0011] In an advantageous development, the first lower locking element comprises a recess in a plan view of the underside of the base. The first upper locking element comprises a projection in a plan view of the top side of the surrounding wall. The depth of the recess and the height of the projection correspond to one another and are preferably the same. The shape of the recess and the shape of the projection are also preferably coordinated with one another. Additionally or alternatively, the second lower locking element comprises a recess in a plan view of the underside of the base. The second upper locking element comprises a projection in a plan view of the top side of the surrounding wall. The depth of the recess and the height of the projection correspond to one another and are preferably the same. The shape of the recess and the shape of the projection are also preferably coordinated with one another. This makes it very easy to place an upper oven tray onto an underlying lower oven tray.The respective first and second upper locking elements of the lower oven tray engage with their projections in the corresponding recess of the respective first and second lower locking elements of the upper oven tray.
[0012] In an advantageous further development, the projection has a height of preferably less than 1 cm and the recess has a depth of preferably less than 1 cm.
[0013] In an advantageous further development, the projection preferably extends over a length which is greater than 10 mm, 15 mm, 20 mm, 30 mm, 40 mm, 50 mm or 60 mm and which is preferably less than 70 mm, 65 mm, 55 mm, 45 mm, 35 mm, 25 mm, 15 mm or 12 mm.
[0014] In an advantageous further development, the trough preferably extends over a length which is greater than 10 mm, 15 mm, 20 mm, 30 mm, 40 mm, 50 mm or 60 mm and which is preferably less than 70 mm, 65 mm, 55 mm, 45 mm, 35 mm, 25 mm, 15 mm or 12 mm.
[0015] In an advantageous further development, the projection of the first upper locking element and the projection of the second upper locking element are arranged separately from one another and are not connected to one another.
[0016] In an advantageous further development, the recess of the first lower locking element and the recess of the second lower locking element are arranged separately from one another and are not connected to one another.
[0017] In an advantageous further development, the projection of the first upper locking element and the projection of the second upper locking element are free of an opening and completely closed.
[0018] In an advantageous further development, the recess of the first lower locking element and the recess of the second lower locking element are free of an opening and completely closed.
[0019] In an advantageous further development, the first upper locking element and the second upper locking element are free of a screw connection and / or a movable element.
[0020] In an advantageous further development, the first lower locking element and the second lower locking element are free of a screw connection and / or a movable element.
[0021] In an advantageous development, the recess is created by a stamping and / or pressing and / or bending process, which creates the respective projection on the other side. Thus, the introduction of a recess on the underside of the base results in the creation of a corresponding projection on the upper side of the base, which projects into the receiving space. In an advantageous further development, the projections are visible in a plan view of the top side of the oven tray and the recesses are visible in a plan view of the bottom side of the oven tray.
[0022] In principle, it would also be conceivable to have a protrusion on the underside of the base and a recess on the top of the surrounding wall. However, this could have the disadvantage of making the lower oven tray unstable on a kitchen countertop or in the oven.
[0023] In an advantageous development, the shape of the first upper locking element corresponds to the shape of the second upper locking element. It is also conceivable for the second upper locking element to have a shape that deviates from the shape of the first upper locking element. Furthermore, the shape of the first lower locking element corresponds to the shape of the second lower locking element. It is also conceivable for the second lower locking element to have a shape that deviates from the shape of the first lower locking element.
[0024] In an advantageous development, the first upper locking element and the first lower locking element have the shape of an arc, circle, oval, rectangle, square, or a straight line. Additionally or alternatively, the second upper locking element and the second lower locking element have the shape of an arc, circle, oval, rectangle, square, or a straight line.
[0025] In an advantageous development, the first upper locking element is equidistant from the center of the oven tray as the first lower locking element. Additionally or alternatively, the second upper locking element is equidistant from the center of the oven tray as the second lower locking element. This allows the upper oven tray to be rotated simply around the center. Moving the upper oven tray along an axis is not necessary for stacking. This allows for optimal use of the space in the oven.
[0026] In an advantageous development, the first upper locking element is equidistant from the center of the oven tray as the second upper locking element. Additionally or alternatively, the first lower locking element is equidistant from the center of the oven tray as the second lower locking element. This results in a very symmetrical construction of the oven tray.
[0027] In an advantageous development, the circumferential wall comprises a flange on its upper side which extends outwards. The term "outwards" is to be understood as meaning that the flange does not extend in the direction of the receiving space, but rather extends further away from the center of the oven tray. The first upper locking element is arranged in a first part of the flange, whereas the second upper locking element is arranged in a second part of the flange. This allows the first upper locking element and the second upper locking element to be created very easily. This is achieved in particular by applying a stamping and / or pressing and / or bending process in the flange.
[0028] In an advantageous development, the flange extends along most or all of the upper surface of the peripheral wall. In this context, the flange preferably extends 360° around the center. Alternatively, it is also possible for the flange to extend only in the region of the upper surface of the peripheral wall in which the first upper locking element and the second upper locking element are arranged. In this case, the flange would preferably consist of the first and second parts, which are not contiguous.
[0029] In an advantageous development, the flange extends further outward from the top side of the surrounding wall in the areas where the first upper locking element and the second upper locking element are arranged. In other areas that are free of the first and second upper locking elements, the flange extends less far outward. This allows for a more compact design of the oven tray.
[0030] In an advantageous further development, the flange is arranged parallel but spaced from the floor.
[0031] In an advantageous development, the first upper locking element and the second upper locking element are arranged at a distance of 180° from each other around the center of the oven tray. Preferably, the first lower locking element and the second lower locking element are also arranged at a distance of 180° from each other around the center of the oven tray.
[0032] In an advantageous further development, the surrounding wall comprises a first bulge, wherein the first lower locking element is arranged in the region of the first bulge in the base. Additionally or alternatively, the surrounding wall comprises a second bulge, wherein the second lower locking element is arranged in the region of the second bulge in the base. A “bulge” is to be understood as meaning that in the region of the bulge the surrounding wall extends further outwards than in other regions, thereby increasing the receiving space in this region. This makes it very efficient to arrange the first lower locking element at the same distance from the center of the oven tray as the first upper locking element, or to arrange the second lower locking element at the same distance from the center of the oven tray as the second upper locking element.
[0033] In an advantageous development, the first lower locking element is itself rotated by the angle of rotation relative to the first upper locking element on the base of the oven tray, so that when the oven tray is rotated by the angle of rotation, the first lower locking element assumes the same angular position as the first upper locking element of the other oven tray. If the angle of rotation is 45°, for example, the first lower locking element is arranged on the base rotated by 45° relative to the first upper locking element. Additionally or alternatively, the second lower locking element is itself rotated by the angle of rotation relative to the second upper locking element on the base of the oven tray, so that when the oven tray is rotated by the angle of rotation, the second lower locking element assumes the same angular position as the second upper locking element of the other oven tray.
[0034] In an advantageous development, the first lower locking element has an arcuate profile when viewed from below on the underside of the base. The first lower locking element, in particular in the form of a recess, preferably follows a section on a circular path around the center of the baking tray. In line with this, the first upper locking element, in particular in the form of a projection, has an equally arcuate profile when viewed from above on the top side of the surrounding wall. Additionally or alternatively, the second lower locking element has an arcuate profile when viewed from below on the underside of the base. The second lower locking element, in particular in the form of a recess, preferably follows a section on a circular path around the center of the baking tray. In line with this, the second upper locking element, in particular in the form of the projection, has an equally arcuate profile when viewed from above on the top side of the surrounding wall.This allows two oven trays to be stacked very securely on top of each other.
[0035] In an advantageous development, the bottom of the baking tray is perforated with numerous holes to allow air circulation during the baking process. This results in improved baking results.
[0036] In an advantageous further development, the holes have a diameter of preferably less than 5 mm, 4 mm or less than 3 mm.
[0037] In an advantageous refinement, the area of the base perforated with the holes is raised above other areas of the base that are free of holes and extends further into the receiving space. This prevents the perforated area from resting directly on a surface, such as the oven floor, allowing for optimal air circulation.
[0038] In an advantageous further development, the area interspersed with holes is separated into several sub-areas by areas that are free of holes.
[0039] In an advantageous development, the oven tray is a one-piece laser-cut, punched, embossed, and / or bent part. It is particularly advantageous that the oven tray is formed as a single piece. This eliminates the need for a scaffold or other support structure to securely stack one oven tray on top of another.
[0040] In an advantageous development, the oven tray is made of enamel or contains enamel. This makes the oven tray particularly durable and easy to clean.
[0041] In an advantageous further development, the oven tray is constructed point-symmetrically to the center. The oven tray can also be constructed symmetrically to a central longitudinal plane that runs through the center.
[0042] In an advantageous further development, the connection of the first upper locking element of one oven tray to the first lower locking element of another oven tray is a positive connection.
[0043] In an advantageous development, the first upper locking element is arranged closer to the surrounding wall than to the center of the oven tray. Additionally or alternatively, the first lower locking element is arranged closer to the surrounding wall than to the center of the oven tray. Additionally or alternatively, the second upper locking element is arranged closer to the surrounding wall than to the center of the oven tray. Additionally or alternatively, the second lower locking element is arranged closer to the surrounding wall than to the center of the oven tray.
[0044] In an advantageous further development, there is at least a third upper locking element and at least a third lower locking element. There may be additional locking elements.
[0045] The stack according to the invention comprises a first oven tray and at least one second oven tray. The oven trays are constructed according to at least one of the preceding embodiments. The second oven tray is placed with its first lower locking element on the first upper locking element of the first oven tray, so that, when viewed from above, the first oven tray and the second oven tray are offset from each other by the rotation angle. The stack is therefore very stable and space-saving.
[0046] In an advantageous embodiment of the stack, the second oven tray is placed with its second lower locking element on the second upper locking element of the first oven tray, so that, when viewed from above, the first oven tray and the second oven tray are offset from each other by the rotation angle. The use of a second upper and lower locking element makes the stack even more stable.
[0047] In an advantageous embodiment of the stack, the first and second baking trays have a cross-section that deviates from a round shape, so that when viewed from above, the upper side of the surrounding wall of the second baking tray reveals the receiving space of the first baking tray, which promotes air exchange during the baking process. The angle of rotation is neither 180° nor 360°.
[0048] In an advantageous development, the upper oven tray can be stacked on the lower oven tray only in a predetermined rotational or angular position. Preferably, the upper oven tray can be stacked on the lower oven tray only in one or two predetermined rotational or angular positions.
[0049] The invention is described below purely by way of example with reference to the drawings. They show: Fig. 1, Fig. 2 and Fig. 3: different views of the baking tray according to the invention; and Fig. 4 and Fig. 5: different views of a stack with several oven trays according to the invention.
[0050] The Fig. 1, Fig. 2 and Fig. 3 show various views of the oven tray 1 according to the invention. The oven tray 1 comprises a base 2 and a surrounding wall 3. The surrounding wall 3 extends away from the base 2 and, together with the base 2, defines a receiving space 4 for inserting the pasta.
[0051] The oven tray 1 comprises a first upper locking element 5a, which is arranged on an upper side 3a of the surrounding wall 3, spaced from the base 2. The oven tray 1 comprises a first lower locking element 6a, which is arranged on a lower side 2a of the base 2.
[0052] The first upper locking element 5a and the first lower locking element 6a are arranged offset from a center 7 of the oven tray 1 by a predetermined angle of rotation α in a plan view of the oven tray 1, whereby the oven tray 1 with its first lower locking element 6a can be placed on a first upper locking element 5a of another oven tray 1 in a rotated manner relative to the latter.
[0053] The oven tray 1 comprises a second upper locking element 5b, which is arranged on an upper side 3a of the surrounding wall 3, spaced from the base 2. The oven tray 1 comprises a second lower locking element 6b, which is arranged on the underside 2a of the base 2.
[0054] The second upper locking element 5b and the second lower locking element 6b are arranged offset from a center 7 of the oven tray 1 by the same predetermined angle of rotation α in plan view of the oven tray 1, whereby the oven tray 1 with its second lower locking element 6b can be placed on a second upper locking element 5b of another oven tray 1 rotated relative to the latter.
[0055] The angle of rotation α in this embodiment is approximately 45°.
[0056] The shape of the first lower locking element 6a corresponds to the shape of the first upper locking element 5a. Furthermore, the shape of the second lower locking element 6b corresponds to the shape of the second upper locking element 5b.
[0057] In a plan view of the underside 2a of the base 2, the first lower locking element 6a comprises a recess, and in a plan view of the top side 3a of the surrounding wall 3, the first upper locking element 5a comprises a projection. The same applies to the second upper and lower locking elements 5b, 6b. In a plan view of the underside 2a of the base 2, the second lower locking element 6b comprises a recess, and in a plan view of the top side 3a of the surrounding wall 3, the second upper locking element 5b comprises a projection.
[0058] The projections of the first and second upper locking elements 5a, 5b are separated from each other. The recesses of the first and second lower locking elements 6a, 6b are also separated from each other.
[0059] The first upper locking element 5a is equidistant from the center 7 of the baking tray 1 as the first lower locking element 6a. Furthermore, the second upper locking element 5b is equidistant from the center 7 of the baking tray 1 as the second lower locking element 6b. Furthermore, in this exemplary embodiment, the first upper locking element 5a is equidistant from the center 7 of the baking tray 1 as the second upper locking element 5b. In addition, the first lower locking element 6a is equidistant from the center 7 of the baking tray 1 as the second lower locking element 6b.
[0060] The surrounding wall 3 includes a flange 8 on its upper side 3a, which extends outward. The first upper locking element 5a is arranged in a first part 8a of the flange 8. The second upper locking element 5b is arranged in a second part 8b of the flange 8. The flange 8 is arranged parallel to, but spaced from, the base 2.
[0061] The flange 8 extends along the entire upper side 3a of the circumferential wall 3. However, the flange 8 does not have the same width everywhere. In other words, the flange 8 does not extend the same distance outwards everywhere. Thus, the flange 8 extends further outwards from the upper side 3a of the circumferential wall 3 in the regions in which the first upper locking element 5a and the second upper locking element 5b are arranged, compared to other regions that are free of the first and second upper locking elements 5a, 5b. The regions where the flange 8 has its greatest width are, in this exemplary embodiment, the first part 8a and the second part 8b.
[0062] The circumferential wall 3 comprises a first bulge 10a, wherein the first lower locking element 5b is arranged in the region of the first bulge 10a in the base 2. Furthermore, the circumferential wall 3 comprises a second bulge 10b, wherein the second lower locking element 6b is arranged in the region of the second bulge 10b in the base 2.
[0063] The first lower locking element 5b is not only arranged offset by the angle of rotation α relative to the first upper locking element 5a, but is itself arranged on the bottom 2 of the oven tray 1 rotated by the angle of rotation α relative to the first upper locking element 5a. This allows that when the oven tray 1 is rotated by the angle of rotation α, the first lower locking element 5b assumes the same angular position as the first upper locking element 5a of the other oven tray 1. Fig. 1, the first lower locking element 5b is arranged approximately vertically, whereas the first upper locking element 5a is arranged at an incline. The second lower locking element 6b is also not only offset by the angle of rotation α relative to the second upper locking element 6a, but is also arranged on the base 2 of the oven tray 1 rotated by the angle of rotation α relative to the second upper locking element 6a. This allows that when the oven tray 1 is rotated by the angle of rotation α, the second lower locking element 6b assumes the same angular position as the second upper locking element 6a of the other oven tray 1. Thus, in Fig. 1, the second lower locking element 6b is arranged approximately vertically, whereas the second upper locking element 6a is arranged inclined.
[0064] Furthermore, the first lower locking element 5b has an arcuate profile when viewed from above onto the underside 2a of the base 2. Correspondingly, the first upper locking element 5a has an arcuate profile when viewed from above onto the upper side 3a of the surrounding wall 3. In this exemplary embodiment, this also applies to the second upper and lower locking elements 6a, 6b. Thus, the second lower locking element 6b has an arcuate profile when viewed from above onto the underside 2a of the base 2. The second upper locking element 6a has an arcuate profile when viewed from above onto the upper side 3a of the surrounding wall 3.
[0065] Furthermore, the bottom 2 of the oven tray 1 is penetrated by a plurality of holes 11 for air exchange during the baking process.
[0066] In addition, in this embodiment, the area of the base 1 through which the holes 11 pass is raised relative to the other area of the base 2 that is free of holes 11 and projects further into the receiving space 4.
[0067] In this embodiment, the oven tray is constructed point-symmetrically to the center 7.
[0068] In the Fig. 4 and Fig. 5 shows a stack 100 of baking trays 1. In Fig. 4, in addition to the oven tray 1, there is also a second oven tray 1a. The second oven tray 1a is placed with its first lower locking element 6a on the first upper locking element 5a of the oven tray 1. Furthermore, the second oven tray 1a is placed with its second lower locking element 6b on the second upper locking element 6a of the oven tray 1. As a result, in a plan view of the stack 100, the oven tray 1 and the second oven tray 1a are offset from one another by the rotation angle α.
[0069] The oven tray 1 and the second oven tray 1a also have a cross-section that deviates from a round shape, so that when looking at the top side 3a of the surrounding wall 3 of the second oven tray 1a, the receiving space 4 of the oven tray 1 arranged underneath is visible, which improves the air exchange during the baking process.
[0070] Since the angle of rotation α is approximately 45°, the second oven tray 1a is arranged rotated by precisely this angle of rotation α relative to the oven tray 1.
[0071] In Fig.5, the stack 100 comprises, in addition to the oven tray 1 and the second oven tray 1a, a third oven tray 1b and a fourth oven tray 1c. The second oven tray 1a is placed with its trough-shaped first and second lower locking elements 5b, 6b on the projection-shaped first and second upper locking elements 5a, 6a of the oven tray 1. The third oven tray 1b is placed with its trough-shaped first and second lower locking elements 5b, 6b on the projection-shaped first and second upper locking elements 5a, 6a of the second oven tray 1a. The fourth oven tray 1c is placed with its trough-shaped first and second lower locking elements 5b, 6b on the projection-shaped first and second upper locking elements 5a, 6a of the third oven tray 1b.
[0072] Since the angle of rotation α is approximately 45°, the second oven tray 1a is rotated by precisely this angle of rotation α relative to the oven tray 1. The third oven tray 1b is also rotated by this angle of rotation α relative to the second oven tray 1a, and the fourth oven tray 1c is further rotated by this angle of rotation α relative to the third oven tray 1b.
[0073] The invention is not limited to the described embodiments. Within the scope of the invention, all described and / or illustrated features can be combined with one another in any way. List of reference symbols 1 oven tray 1a, 1b, 1c Additional oven trays 2 floor 2a Underside of the floor 3 Surrounding wall 3a Top of the surrounding wall 4 Recording room 5a First upper locking element 5b Second upper locking element 6a First lower locking element 6b Second lower locking element 7 Center 8 Flange 8a First part of the flange 8b Second part of the flange 10a First bulge 10b Second bulge 11 holes (in the ground) α angle of rotation 100 stacks
Claims
[1] Stackable baking tray (1) for baking pasta with the following features: - the oven tray (1) comprises a base (2) and a surrounding wall (3) which extends away from the base (2) and, together with the base (2), defines a receiving space (4) for the pasta; - the oven tray (1) comprises a first upper locking element (5a) which is arranged on an upper side (3a) of the peripheral wall (3) spaced from the base (2); - the oven tray (1) comprises a first lower locking element (6a) arranged on an underside (2a) of the base (2); - the first upper locking element (5a) and the first lower locking element (6a) are arranged offset from a center (7) of the oven tray (1) by a predetermined angle of rotation (α) in plan view of the oven tray (2), whereby the oven tray (1) with its first lower locking element (6a) can be placed on a first upper locking element (6b) of another oven tray (1a, 1b, 1c) rotated relative to the latter. [2] Stackable oven tray (1) according to claim 1, characterized by the following features: - the oven tray (1) comprises a second upper locking element (5b) which is arranged on the upper side (3a) of the peripheral wall (3) spaced from the base (2), wherein the first upper locking element (5a) and the second upper locking element (5b) are arranged at a distance from one another; - the oven tray (1) comprises a second lower locking element (6b) which is arranged at a distance from the first lower locking element (6a) on the underside (2a) of the base (2); - the second upper locking element (5b) and the second lower locking element (6b) are arranged offset from the center (7) of the oven tray (1) by the predetermined angle of rotation (α) in plan view of the oven tray (1) and, as a result of which the oven tray (1) with its second lower locking element (6b) can be placed on a second upper locking element (5b) of the other oven tray (1a, 1b, 1c) rotated relative to the latter. [3] Stackable oven tray (1) according to claim 2, characterized by the following feature: - the angle of rotation (α) is greater than 30°, 35°, 40°, 45°, 50°, 55° or 60° and less than 65°, 55°, 50°, 45°, 40° or 35° and preferably 45°. [4] Stackable baking tray (1) according to claim 2 or 3, characterized bythe following features: - the shape of the first lower locking element (6a) corresponds to the shape of the first upper locking element (5a); and / or - the shape of the second lower locking element (6b) corresponds to the shape of the second upper locking element (5b). [5] Stackable baking tray (1) according to one of claims 2 to 4, characterized by the following features: - in a plan view of the underside (2a) of the base (2), the first lower locking element (6a) comprises a recess and in a plan view of the upper side (3a) of the surrounding wall (3), the first upper locking element (5a) comprises a projection; and / or - in a plan view of the underside (2a) of the base (2), the second lower locking element (6b) comprises a recess and in a plan view of the upper side (3a) of the surrounding wall (3), the second upper locking element (5b) comprises a projection. [6] Stackable baking tray (1) according to one of claims 2 to 5, characterized by the following features: - the first upper locking element (5a) is equidistant from the center (7) as the first lower locking element (6a); and / or - the second upper locking element (5b) is equidistant from the center (7) as the second lower locking element (6b). [7] Stackable baking tray (1) according to one of claims 2 to 6, characterized by the following features: - the first upper locking element (5a) is equidistant from the center (7) as the second upper locking element (5b); and / or - the first lower locking element (6a) is equidistant from the center (7) as the second lower locking element (6b). [8] Stackable baking tray (1) according to one of claims 2 to 7, characterized by the following features: - the peripheral wall (3) comprises on its upper side (3a) a flange (8) which extends outwards; - the first upper locking element (5a) is arranged in a first part (8a) of the flange (8); - the second upper locking element (5b) is arranged in a second part (8b) of the flange (8). [9] Stackable oven tray (1) according to claim 8, characterized by the following features: - the flange (8) extends along most or all of the upper side (3a) of the peripheral wall (3); or - the flange (8) extends only in the area in which the first upper locking element (5a) and the second upper locking element (5b) are arranged. [10] Stackable baking tray (1) according to claim 8 or 9, characterized by the following feature: - the flange (8) extends further outwards from the upper side (3a) of the circumferential wall (3) in the regions in which the first upper locking element (5a) and the second upper locking element (5b) are arranged compared to other regions which are free of the first and second upper locking elements (5a, 5b). [11] Stackable baking tray (1) according to one of claims 8 to 10, characterized by the following feature: - the flange (8) is arranged parallel but spaced from the base (2). [12] Stackable baking tray (1) according to one of claims 2 to 11, characterized by the following features: - the peripheral wall (3) comprises a first bulge (10a), wherein the first lower locking element (6a) is arranged in the area of the first bulge (10a) in the base (2); and / or - the circumferential wall (2) comprises a second bulge (10b), wherein the second lower locking element (6b) is arranged in the area of the second bulge (10b) in the base (2). [13] Stackable baking tray (1) according to one of claims 2 to 12, characterized by the following features: - the first lower locking element (6a) itself is arranged on the base (2) of the oven tray (1) rotated by the angle of rotation (α), so that by rotating the oven tray (1) by the angle of rotation (α), the first lower locking element (a) assumes the same angular position as the first upper locking element (5a) of the other oven tray (1a, 1b, 1c); and / or - the second lower locking element (6b) itself is arranged on the base (2) of the oven tray (1) rotated by the angle of rotation (α), so that by rotating the oven tray (1) by the angle of rotation (α) the second lower locking element (6b) assumes the same angular position as the second upper locking element (5b) of the other oven tray (1a, 1b, 1c). [14] Stackable baking tray (1) according to one of claims 2 to 13, characterized by the following features: - the first lower locking element (6a) comprises an arcuate profile in plan view of the underside (2a) of the base (2); the first upper locking element (5a) comprises an arcuate profile in plan view of the upper side (3a) of the circumferential wall (3); and / or - the second lower locking element (6b) comprises an arcuate profile in plan view of the underside (2a) of the base (2); the second upper locking element (6a) comprises an arcuate profile in plan view of the upper side (3a) of the surrounding wall (3). [15] Stackable oven tray (1) according to one of the preceding claims, characterized by the following feature: - the bottom (2) of the oven tray (1) is perforated by a plurality of holes (11) for air exchange during the baking process. [16] Stackable oven tray (1) according to claim 15, characterized by the following feature: - the area of the base (2) through which the holes (11) pass is raised relative to the other area of the base (2) which is free of holes and projects further into the receiving space (4). [17] Stackable oven tray (1) according to one of the preceding claims, characterized by the following feature: - the oven tray (1) is a one-piece laser and / or punched and / or embossed and / or bent part. [18] Stackable oven tray (1) according to one of the preceding claims, characterized by the following feature: - the oven tray (1) is made of enamel or contains enamel. [19] Stackable oven tray (1) according to one of the preceding claims, characterized by the following feature: - the oven tray (1) is constructed point-symmetrically to the center (7). [20] Stack (100) of a first oven tray (1) and at least one second oven tray (1a), wherein the first and second oven trays (1, 1a) are constructed according to one of the preceding claims, characterized by the following feature: - the second oven tray (1a) is placed with its first lower locking element (6a) on the first upper locking element (5a) of the first oven tray (1), so that in a plan view of the stack (1) the first oven tray (1) and the second oven tray (1a) are offset from one another by the angle of rotation (α). [21] Stack (100) according to claim 20, characterized by the following feature: - the first and second oven trays (1, 1a) have a cross-section that deviates from a round shape, so that when viewed from above onto the top side (3a) of the surrounding wall (3) of the second oven tray (1a), the receiving space (4) of the first oven tray (1) is visible, thereby improving air exchange during the baking process.