Cooking equipment with high stability

Abstract

The invention relates to the technical field of kitchen equipment, in particular to high-stability cooking equipment which comprises an inner shell with the length larger than the width, an outer shell arranged outside the inner shell in a covering mode, a hot air circulation device and a pot body assembly, and the inner shell comprises a top cover, a base and a frame-shaped support located between the top cover and the base and used for supporting the top cover; an opening of the frame-shaped support faces forwards, the front portions of the inner shell and the outer shell are used for containing a rectangular opening of the pot body assembly, and the pot body assembly penetrates through the rectangular opening to be arranged in the inner shell, so that the front portion of the transparent pot body is exposed out of the front end of the outer shell and is at least flush with the front end of the outer shell; the device further comprises a tensioning arm located at the end of the frame-shaped support, the tensioning arm extends upwards from the base along the end of the frame-shaped support to be tensioned with the top cover, pulling force is applied to the top cover through the tensioning arm, the applied pulling force is matched with the frame support, the strength and rigidity of the top cover are effectively improved, and the situation that the front portion of the top cover sinks is reduced; the structure stability of the rectangular opening is ensured, so that the transparent pot body is smoothly drawn.

Description

Technical Field

[0001] This application relates to the technical field of kitchen equipment, and particularly to a cooking device with high stability. Background Art

[0002] In order to conveniently observe the cooking status of food in grilling devices such as air fryers, most air fryers are provided with observation windows.

[0003] For flip-top air fryers, the observation window is generally set on the machine head; for drawer-type air fryers, an opening for the pot body to enter and exit is provided at the front of the housing. Since there are many components in its machine head, it is not conducive to setting the observation window. Generally, the observation window is set on the pot body, or the pot body is directly made of glass material. However, the existing air fryers have a small opening, and there is also a handle on the pot body, which affects the observation of the food in the pot body.

[0004] Later, in order to improve the above problems in the industry, the opening was enlarged, and more areas of the transparent pot body were exposed to the outside. For example, the patent with the application number CN2022222551016 discloses an air fryer with a glass cup and a rotating cage, including a pot body and a glass cup; a rotating cage is arranged inside the glass cup; limiting side blocks for limiting the glass cup are arranged on both sides inside the pot body; positioning grooves are arranged on both sides of the inner wall of the glass cup, and both ends of the rotating cage are embedded and connected in the positioning grooves.

[0005] The above pot body includes an upper outer cover, a base, and a U-shaped frame located between the upper outer cover and the base. Since the U-shaped frame is only arranged at the rear side of the pot body, the front part of the upper outer cover is suspended. There are many components inside the upper outer cover. This single-sided support structure makes the front part of the upper outer cover prone to sinking, resulting in the glass cup being unable to be put into or taken out of the pot body; when the length of the pot body is longer, the sinking phenomenon of the front part of the upper outer cover will be more serious. Summary of the Invention

[0006] In order to effectively solve the above technical problems, this application provides a cooking device with high stability.

[0007] A cooking device with high stability provided by this application adopts the following technical solutions: A cooking device with high stability, comprising an inner shell with a length greater than its width, an outer shell covering the inner shell, a hot air circulation device, and a pot body assembly. The pot body assembly includes a transparent pot body and a handle. The inner shell includes a top cover, a base, and a frame-shaped bracket located between the top cover and the base for supporting the top cover. The opening of the frame-shaped bracket faces forward, and the top cover and the base project forward beyond the opening of the frame-shaped bracket to form a rectangular open space at the front of the inner shell and the outer shell for placing the pot body assembly. The pot body assembly passes through the rectangular open space and is placed inside the inner shell. The top cover and the transparent pot body cooperate to form a cooking space, so that the front part of the transparent pot body is exposed at the rectangular open space and is at least flush with the side walls on the left and right sides of the outer shell; It further includes tension arms located at the end corners of the frame-shaped bracket. The tension arms extend upward from the base along the ends of the frame-shaped bracket and are tightened with the top cover.

[0008] Optionally, the width of the frame-shaped bracket does not exceed the middle of the width of the top cover.

[0009] Optionally, at least two sets of hot air circulation devices are provided inside the top cover, and at least two transparent pot bodies corresponding to the hot air circulation devices are provided at the rectangular open space; or, a partition is provided inside the transparent pot body, and the internal space of the transparent pot body is divided into cooking cavities corresponding to the hot air circulation devices.

[0010] Optionally, the tension arms are located at both ends of the rear side of the frame-shaped bracket; or, the tension arms extend horizontally and are arranged at the rear side of the frame-shaped bracket.

[0011] Optionally, the top end of the tension arm covers the top of the top cover, and the bottom end is located below the base.

[0012] Optionally, positioning grooves are provided at both the top and bottom of the tension arm, and positioning blocks extending into the positioning grooves are provided on both the top cover and the base.

[0013] Optionally, the tension arms are connected to the top cover and the base through locking members.

[0014] Optionally, it further includes support arms located at both ends of the frame-shaped bracket. The support arms are connected to the top cover, the base, and the frame-shaped bracket.

[0015] Optionally, the contact area between the support arm and the top cover is larger than the contact area between the support arm and the base.

[0016] Optionally, it further includes connecting plates located on both sides of the top cover. One end of the connecting plate is connected to the tension arm, and the other end is connected to the front part of the top cover.

[0017] In summary, the present application has at least the following beneficial effects: 1. The inner shell includes a top cover, a base, and a frame-shaped bracket located between the top cover and the base for supporting the top cover. The opening of the frame-shaped bracket faces forward. The top cover and the base protrude forward beyond the opening of the frame-shaped bracket, forming a rectangular open space at the front of the inner shell and the outer shell for placing the pot body assembly. The pot body assembly passes through the rectangular open space and is placed inside the inner shell. The top cover and the transparent pot body cooperate to form a cooking space. The hot air generated by the hot air circulation device enters the transparent pot body to heat the food inside the transparent pot body. During cooking, the front part of the transparent pot body is exposed at the rectangular open space and is at least flush with the side walls on the left and right sides of the outer shell. The rectangular open space is relatively large, and the food inside the transparent pot body can be easily observed through the front part of the transparent pot body, facilitating the control of the cooking state of the food. The length of the inner shell is greater than the width, and there are many components inside the top cover. Only supported by the frame-shaped bracket, the front part of the top cover is very likely to droop. Therefore, a tension arm is provided at the corner of the frame-shaped bracket. The tension arm extends upward from the base along the end of the frame-shaped bracket and is tightened with the top cover. An upward pulling force is applied to the top cover through the tension arm. By using the pulling force it applies and cooperating with the frame bracket, the strength and rigidity of the top cover are effectively improved, preventing the front part of the top cover from sinking, ensuring the structural stability of the rectangular open space, and thus ensuring smooth pulling of the transparent pot body. The tension arm is arranged at the end of the frame-shaped bracket, making the acting point of the upward pulling force it applies the farthest from the front part of the top cover. This is equivalent to obtaining the longest effective lever arm. According to the lever principle, when the magnitude of the pulling force provided by the tension arm is prioritized, the longer the lever arm, the greater the moment generated to resist the sinking of the front part of the top cover. This can efficiently balance or offset the gravitational moment of the sinking of the front part of the top cover with a relatively small pulling force. Moreover, the rectangular open space and the pulling operation of the transparent pot body are located at the front of the device. By arranging the tension arm at the rear end, the front area is completely avoided, ensuring that the size of the rectangular open space is not affected, enabling smooth insertion and removal of the transparent pot body and maximizing the visible area, while not blocking the user's line of sight to observe the food through the front part of the transparent pot body, nor interfering with the user's operation of grasping the handle to operate the transparent pot body.

[0018] 2. The width of the frame-shaped bracket does not exceed the middle of the width of the top cover. While meeting the structural strength requirements, it maximizes the rectangular open space, facilitating the insertion and removal of the transparent pot body.

[0019] 3. There are at least two sets of hot air circulation devices inside the top cover, making the top cover longer and heavier. Compared with a single hot air circulation device, the center of gravity of the top cover moves forward, and it is more likely to sink at the front part. In this case, the role of the tension arm is more crucial. The pulling force applied by the tension arm forms a moment balance with the weight of multiple sets of hot air circulation devices, ensuring the structural stability of the rectangular open space and preventing the transparent pot body from getting stuck during pulling.

[0020] 4. The tension arms are located at the two end corners at the rear side of the frame-shaped bracket. These end corners are the positions farthest from the front part of the top cover. Applying a tensile force here can generate the maximum moment arm, effectively lifting the front part of the top cover with a relatively small tensile force, and more effectively counteracting the downward trend of the front part of the top cover. Moreover, as the geometric weak points of the structure, applying a tensile force by the tension arms at these end corners can evenly transfer the load to the base and the top cover, avoiding local stress concentration and enhancing the integrity of the frame-shaped bracket. In addition, the symmetrically distributed tension arms at the rear side form a triangular stable configuration with the base and the top cover, reducing the probability of deformation of the top cover while enhancing the anti-torsion ability of the device during the pulling of the transparent pot body or temperature change. The rear tension arms can also avoid occupying the front space, ensuring that the size of the rectangular opening is not limited, which is convenient for pulling the transparent pot body.

[0021] 5. The tension arms extend horizontally at the rear side of the frame-shaped bracket. The horizontally extending tension arms can enhance the rigidity of the rear side of the top cover, avoid deformation of the rectangular opening caused by slight sinking of the top cover, ensure uniform resistance when the transparent pot body is pulled along the preset track, and reduce jamming. In addition, the horizontally extending tension arms cover the entire length or most of the area at the rear side of the frame-shaped bracket, forming a continuous support band, which can evenly share the load of the front part of the top cover and reduce the bending deformation caused by local concentrated load. For large-sized cooking equipment with a top cover of relatively long length, compared with the tension arms located at both ends of the frame-shaped bracket, the horizontally extending tension arms apply a more uniform tensile force distribution to the front part of the top cover, generate a more uniform supporting force for the front part of the top cover, reduce local stress concentration, and the horizontally extending tension arms have a larger coverage area, which can more effectively share the load of the front part of the top cover. Especially in the case of uniformly distributed load, it can avoid the sinking of the front part of the top cover. When the hot air circulation device is operating, the horizontally extending tension arms can more effectively suppress vibration and impact, reduce the accumulation of tiny displacements generated by vibration at the front part of the top cover, and avoid deformation of the top cover.

[0022] 6. The top ends of the tension arms cover above the frame-shaped bracket, and the bottom ends are located below the base, directly bearing the downward pressure of the top cover and the upward reaction force of the base, which can further enhance the strength of the top cover, thereby avoiding the sinking of the front part of the top cover. At the same time, the longitudinally extending tension arms extend from the top to the bottom, forming a longer support structure, reducing the risk of lateral bending deformation of the frame-shaped bracket, and also being able to resist external force impacts and protect the internal components.

[0023] 7. The cooking equipment also includes support arms located at both ends of the frame-shaped bracket. The support arms are connected to the top cover, the base, and the frame-shaped bracket, and cooperate with the frame-shaped bracket to support the top cover, and can also improve the strength and rigidity of the top cover and the frame-shaped bracket, making the overall structure of the inner shell more stable and extending the service life of the cooking equipment. The support arms are symmetrically installed on both sides, which can evenly distribute the load and prevent the equipment from tilting. Especially under the vibration generated by the pulling of the transparent pot body or the operation of the hot air circulation device, the structure can be kept stable. The support arm can also help to disperse the weight of the top cover. Especially when there are multiple hot air circulation devices in the top cover, it can prevent the front part of the top cover from sagging.

[0024] 8. The cooking device further includes connecting plates located on both sides of the top cover. The connecting plates are located on the left and right sides of the retaining ring. One end of the connecting plate is connected to the tensioning arm, and the other end is connected to the front part of the top cover. By connecting the tensioning arm and the front part of the top cover through the connecting plate, the tensioning arm is strengthened in cooperation with the front part of the top cover, further sharing the load of the front part of the top cover, so as to improve the strength and rigidity of the top cover and prevent the front part of the top cover from sinking. With the cooperation of the tensioning arm and the connecting plate, the load of the front part of the top cover is transmitted along the path of the front part of the top cover, the connecting plate, the tensioning arm, and the base, changing from single-point force application to distributed force transmission, reducing the maximum bending stress of the front part of the top cover, and thus preventing the front part of the top cover from sinking.

[0025] 9. The contact area between the support arm and the top cover is larger than the contact area between the support arm and the base, forming a gradient pressure distribution, which can disperse the pressure on the top cover, reduce local stress. The side of the top of the support arm away from the frame-shaped bracket extends gradually upward from bottom to the front of the device, which can further enhance the support for the top cover. While preventing the front part of the top cover from sinking, it does not affect the size of the rectangular opening, helps to place the handle of the transparent pot body, and ensures that there is no interference in the handle holding space. Description of the Drawings

[0026] Figure 1 is a schematic structural diagram of the cooking device shown in Embodiment 1 of the present application.

[0027] Figure 2 is a schematic structural diagram of the inner shell and the pot body assembly in the cooking device shown in Embodiment 1 of the present application.

[0028] Figure 3 is one of the schematic structural diagrams of the inner shell in the cooking device shown in Embodiment 1 of the present application.

[0029] Figure 4 is a schematic structural diagram of the inner shell in the cooking device shown in Embodiment 1 of the present application.

[0030] Figure 5 is a schematic structural diagram of the tensioning arm in the cooking device shown in Embodiment 1 of the present application.

[0031] Figure 6 is another schematic structural diagram of the inner shell in the cooking device shown in Embodiment 1 of the present application.

[0032] Figure 7 is a schematic structural diagram of the support arm in the cooking device shown in Embodiment 1 of the present application.

[0033] Figure 8It is a schematic structural diagram of the pot body assembly in the cooking device shown in Embodiment 1 of the present application.

[0034] Figure 9 It is a schematic structural diagram of the inner shell shown in Embodiment 2 of the present application.

[0035] Explanation of reference numerals: 1, outer shell; 2, inner shell; 21, top cover; 211, motor bracket; 212, retaining ring; 22, base; 221, recessed part; 222, baffle; 23, frame-shaped bracket; 3, pot body assembly; 31, transparent pot body; 32, handle; 33, partition; 34, limiting structure; 4, rectangular open mouth; 5, tensioning arm; 51, positioning groove; 52, positioning block; 53, relief groove; 54, relief block; 6, connecting plate; 7, support arm; 71, convex block; 72, groove. Detailed implementation manners

[0036] The present application will be further described below in conjunction with the drawings and specific embodiments. It should be noted that the embodiments are only specific elaborations of the present application, and their purpose is to enable those skilled in the art to better understand the technical solutions of the present application, and should not be regarded as a limitation to the present application.

[0037] In the description of the present application, it should be noted that if terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are used to indicate the orientation or positional relationship, it is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application.

[0038] Embodiments of the present application disclose a cooking device with high stability, as Figure 1 and Figure 2 shown, including an inner shell 2 with a length greater than the width, an outer shell 1 covering the outside of the inner shell 2, a hot air circulation device, and a pot body assembly 3. The pot body assembly 3 includes a transparent pot body 31 and a handle 32. The inner shell 2 includes a top cover 21, a base 22, and a frame-shaped bracket 23 located between the top cover 21 and the base 22 for supporting the top cover 21. The frame-shaped bracket 23 is arranged in a U shape with an opening facing forward. The top cover 21 and the base 22 project forward beyond the opening of the frame-shaped bracket 23 to form a rectangular open mouth 4 at the front of the inner shell 2 and the outer shell 1 for placing the pot body assembly 3. The pot body assembly 3 passes through the rectangular open mouth 4 and is placed inside the inner shell 2. The top cover 21 and the transparent pot body 31 cooperate to form a cooking space, so that the front part of the transparent pot body 31 is exposed at the rectangular open mouth 4 and is at least flush with the side walls on the left and right sides of the outer shell 1. Through the front part of the transparent pot body 31, the food in the transparent pot body 31 can be easily observed, which is convenient for controlling the cooking state of the food.

[0039] Its top cover 21, base 22 and frame-shaped bracket 23 are connected in sequence and fixedly connected through locking parts such as bolts. Through the locking parts, the top cover 21, base 22 and frame-shaped bracket 23 are closely fitted, improving the overall rigidity and facilitating disassembly and maintenance. It should be noted that the locking parts are evenly distributed along the edge of the frame-shaped bracket 23, which can ensure stress dispersion and avoid local stress concentration. When bearing loads, the structure is more stable and the top cover 21 is not easily deformed.

[0040] Combined with Figure 3 , a recessed part 221 matching with the transparent pot body 31 is provided on the base 22 to ensure the stability of the transparent pot body 31 inserted into the inner shell 2. A baffle 222 is also provided on the base 22 and on the peripheral side of the recessed part 221, which can play a role in limiting the transparent pot body 31.

[0041] It also includes a tension arm 5 located at the end corners of the frame-shaped bracket 23. The tension arm 5 is located at the rear side of the frame-shaped bracket 12. The tension arm 5 extends upward from the base 22 along the end of the frame-shaped bracket 23 to tension the top cover 21. By applying a pulling force to the top cover 21 through the tension arm 5 and cooperating with the frame bracket by using the applied pulling force, the strength and rigidity of the top cover 21 are effectively improved, the situation of the front part of the top cover 21 sinking is reduced, the structure of the rectangular opening 4 is ensured to be stable, and thus the smooth drawing of the transparent pot body 31 is guaranteed.

[0042] The frame-shaped bracket 23 is of a U-shaped structure, and its rear side is the most stable part in terms of structure. The tension arm 5 is fixed to this stable rear base area and extends upward to tension the rear end of the top cover 21, which is equivalent to establishing a strong support column at the most stable rear part of the structure, providing a reliable basis for applying the pulling force. The tension arm 5 pulls the rear part of the top cover 21 upward from the rear part of the base 22, tightly binding the rear part of the top cover 21, the frame-shaped bracket 23 and the base 22 together, significantly enhancing the rigidity and integrity of the rear part of the entire inner shell 2 structure, making the entire frame-shaped bracket 23 more resistant to deformation, and thus indirectly supporting the front part of the top cover 21 to avoid the phenomenon of the front part of the top cover 21 drooping.

[0043] And the rectangular opening 4 and the drawing operation of the transparent pot body 31 are located at the front part of the device. The tension arm 5 is arranged at the rear end part, completely avoiding the front area, ensuring that the size of the rectangular opening 4 is not affected, enabling the smooth insertion and removal of the transparent pot body 31 and the maximum visible area, and at the same time not blocking the user's line of sight to observe the food through the front part of the transparent pot body 31, nor interfering with the user's operation of grasping the handle 32 to operate the transparent pot body 31.

[0044] The bottom width of the tension arm 5 is greater than the top width, which can increase the contact area between the tension arm 5 and the base 22, form a more stable support surface, improve the overall stability, and thus reduce the sinking of the front part of the top cover 21. At the same time, several criss-crossing reinforcing ribs are provided inside the tension arm 5, which can enhance the overall strength and rigidity of the tension arm 5, and further enhance the pulling force exerted by the tension arm 5 on the top cover 21.

[0045] At least two reflector covers and at least two sets of hot air circulation devices are provided inside the top cover 21. Each set of hot air circulation devices includes a heating element, a fan, and a motor for driving the fan to rotate. The heating element and the fan are both located inside the corresponding reflector cover, and the motor is located above the top cover 21.

[0046] Since at least two sets of hot air circulation devices are both located inside the top cover 21, the length of the top cover 21 is longer and the weight is heavier. Compared with a single hot air circulation device, the center of gravity of the top cover 21 moves forward, and it is easier for the front part of the top cover 21 to sink. In this case, the role of the tension arm 5 is more crucial. The pulling force exerted by the tension arm 5 and the weight of multiple sets of hot air circulation devices form a moment balance to ensure the structural stability of the rectangular open mouth 4 and avoid jamming during the pulling of the transparent pot body 31.

[0047] It should be noted that the top cover 21 includes a motor bracket 211 and a retaining ring 212 located outside the motor bracket 211. The retaining ring 212 and the motor bracket 211 can be integrally connected or fixedly connected through locking parts such as bolts. The transparent pot body 31 is inserted into the rectangular open mouth 4, and the edge of the transparent pot body 31 corresponds to the retaining ring 212, which can ensure the sealing of the cooking space.

[0048] The top of the frame-shaped bracket 23 is connected to the retaining ring 212 through a locking part, and the width of the frame-shaped bracket 23 does not exceed the middle part of the width of the top cover 21. While meeting the structural strength, the rectangular open mouth 4 is maximized, which is convenient for putting in and taking out the transparent pot body 31.

[0049] The handles 32 are located on the left and right sides of the transparent pot body 31 and in the middle of the transparent pot body 31, aligned with the center of gravity of the transparent pot body 31, ensuring easy grasping by the user. At the same time, it is adapted to the design of the rectangular open mouth 4, facilitating the user to pull or move the transparent pot body 31, avoiding tilting of the transparent pot body 31 caused by unilateral force application, and effectively preventing the user from being scalded by high temperature when moving the transparent pot body 31. At the same time, the width of the frame-shaped bracket 23 does not exceed the middle part of the width of the top cover 21, which can accommodate the position of the handle 32 and is convenient for the user to hold the handle 32.

[0050] Combined Figure 4, its tension arm 5 is located at the two end corners at the rear side of the frame-shaped support 23, and the end corners are the positions farthest from the front part of the top cover 21. Applying a tensile force here can generate the maximum lever arm, effectively lifting the front part of the top cover 21 with a smaller tensile force, and more effectively counteracting the downward trend of the front part of the top cover 21; moreover, as the geometric weak points of the structure, applying a tensile force by the tension arm 5 at these end corners can evenly transfer the load to the base 22 and the top cover 21, avoiding local stress concentration and enhancing the integrity of the frame-shaped support 23; in addition, the symmetrically distributed tension arms 5 at the rear side form a triangular stable configuration with the base 22 and the top cover 21, reducing the probability of deformation of the top cover 21 while improving the anti-torsion ability of the device when the transparent pot body 31 is pulled out or the temperature changes.

[0051] The rear tension arm 5 can also avoid occupying the front space, ensuring that the size of the rectangular opening 4 is not limited, and facilitating the pulling out of the transparent pot body 31.

[0052] The top end of the tension arm 5 covers above the top cover 21, and the bottom end is located below the base 22, directly bearing the downward pressure of the top cover 21 and the upward reaction force of the base 22, which can further enhance the strength of the top cover 21, thus avoiding the front part of the top cover 21 from sinking; at the same time, the longitudinal tension arm 5 extends from the top to the bottom, forming a longer support structure, reducing the risk of lateral bending deformation of the frame-shaped support 23, and also being able to resist external force impacts and protect the internal components.

[0053] Among them, in combination with Figure 4 and Figure 5 , positioning grooves 51 are provided at both the top and bottom of the tension arm 5, and positioning blocks 52 extending into the positioning grooves 51 are provided on both the retaining ring 212 and the base 22. By embedding the positioning blocks 52 into the positioning grooves 51, the tension arm 5 can be positioned, eliminating the misalignment problem caused by assembly errors, and helping to improve the assembly accuracy; especially in the case where the front part of the top cover 21 is prone to sinking, this design can reduce the deformation of the top cover 21 through more effective force transmission and restraint.

[0054] In this embodiment, a relief groove 53 is provided on the positioning block 52 of the base 22, and a relief block 54 cooperating with the relief groove 53 is provided at the positioning groove 51 at the bottom of the tension arm 5, further improving the connection stability between the tension arm 5 and the base 22.

[0055] The tension arm 5 is connected to both the top cover 21 and the base 22 through locking parts such as bolts. The locking parts fixedly connect the tension arm 5 with the top cover 21 and the base 22 to form an integral stress-bearing framework, enabling the tensile force to be directly transmitted to the rear part of the top cover 21, forming a reverse restraint force against the front part of the top cover 21 from sinking, and avoiding the front part of the top cover 21 from sinking.

[0056] In combination with Figure 6, To further enhance the strength of the front part of the top cover 21, the cooking device further includes connecting plates 6 located on both sides of the top cover 21. The connecting plates 6 are located on the left and right sides of the retaining ring 212. One end of the connecting plate 6 is connected to the tensioning arm 5, and the other end is connected to the front part of the top cover 21. By connecting the tensioning arm 5 and the front part of the top cover 21 through the connecting plate 6, the front part of the top cover 21 is strengthened in cooperation with the tensioning arm 5, further sharing the load of the front part of the top cover 21, thereby being able to improve the strength and rigidity of the top cover 21 and avoid the situation of the front part of the top cover 21 sinking.

[0057] The connecting plate 6 is arranged in a U shape with the opening facing upward, which can improve the strength of the connecting plate 6.

[0058] With the cooperation of the tensioning arm 5 and the connecting plate 6, the load of the front part of the top cover 21 is transmitted along the path of the front part of the top cover 21, the connecting plate 6, the tensioning arm 5, and the base 22, changing from single-point force application to distributed force transmission, reducing the maximum bending stress of the front part of the top cover 21, thereby being able to avoid the front part of the top cover 21 from sinking. The connecting plate 6 is connected to the tensioning arm 5 and the front part of the top cover 21 through locking parts, facilitating the installation and replacement of the connecting plate 6.

[0059] In other embodiments, a connecting member is further provided between the two connecting plates 6. The connecting member is located at the front part of the top cover 21 and horizontally connects the two connecting plates 6 to form a closed frame structure. Through the grid-like force transmission of the closed frame, the single-point force application on the front part of the top cover 21 is transformed into multi-node uniform force application, dispersing the pressure, reducing local deformation, and reducing the risk of the front part of the top cover 21 sinking; at the same time, the connecting member serves as a horizontal support, while enhancing the strength between the two connecting plates 6, sharing the load of the front part of the top cover 21, improving the overall stability of the top cover 21, and preventing the top cover 21 from twisting under asymmetric loads.

[0060] In addition, as Figure 6 and Figure 7 shown, the cooking device further includes support arms 7 located at both ends of the frame-shaped bracket 23. The support arms 7 are connected to the top cover 21, the base 22, and the frame-shaped bracket 23. Cooperating with the frame-shaped bracket 23, they play a supporting role for the top cover 21, and can also improve the strength and rigidity of the top cover 21 and the frame-shaped bracket 23, making the overall structure of the inner shell 2 more stable and extending the service life of the cooking device; the support arms 7 are symmetrically installed on both sides, which can evenly distribute the load and prevent the device from tilting, especially maintaining the structural stability under the vibration generated by the pulling of the transparent pot body 31 or the operation of the hot air circulation device.

[0061] The support arms 7 can also help to disperse the weight of the top cover 21, especially when there are multiple hot air circulation devices in the top cover 21, avoiding the front part of the top cover 21 from sagging.

[0062] The contact area between the support arm 7 and the top cover 21 is larger than the contact area between the support arm 7 and the base 22, forming a gradient pressure distribution, which can disperse the pressure on the top cover 21 and reduce local stress. The side of the top of the support arm 7 away from the frame bracket 23 gradually extends forward from bottom to top, which can further enhance the support effect on the top cover 21, avoid the front part of the top cover 21 from sinking, and at the same time, does not affect the size of the rectangular opening 4, which is helpful for placing the handle 32 of the transparent pot body 31 and ensures that there is no interference in the holding space of the handle 32.

[0063] Both the top end and the bottom end of the support arm 7 are provided with bumps 71, and both the base 22 and the retaining ring 212 are provided with grooves 72 for the bumps 71 to extend into. Moreover, the support arm 7 is connected to the frame bracket 23, the base 22, and the retaining ring 212 through locking parts, which can further improve the connection stability between the support arm 7 and the frame bracket 23, the base 22, and the retaining ring 212, and avoid structural deformation.

[0064] In this embodiment, there are two sets of both the reflector and the hot air circulation device. The two reflectors can be integrally connected or separately arranged. A partition 33 is provided inside the transparent pot body 31, and the partition 33 divides the internal space of the transparent pot body 31 into cooking cavities corresponding to the hot air circulation device. The heating element heats, and the fan rotates driven by the motor, blowing the heat generated by the heating element into the corresponding cooking cavity to heat the food in the cooking cavity.

[0065] Combined with Figure 8 , a limiting structure 34 for inserting the partition 33 is provided inside the transparent pot body 31. The limiting structure 34 can be arranged on the inner side wall of the transparent pot body 31 and can be two guide rails vertically extending on the inner side wall of the pot body assembly 3. A limiting groove for inserting the partition 33 is formed between the two guide rails, and both ends of the partition 33 are abutted against the opposite side walls of the transparent pot body 31.

[0066] Inserting the partition 33 into the limiting structure 34 can divide the transparent pot body 31 into two independent cooking cavities, enabling simultaneous cooking of multiple foods and effectively improving cooking efficiency. After removing the partition 33, a large cooking cavity is formed inside the transparent pot body 31, thus meeting the cooking requirements for single-variety and large-capacity foods.

[0067] In other embodiments, at least two transparent pot bodies 31 corresponding to the hot air circulation device are provided at the rectangular opening 4, and the hot air generated by the hot air circulation device is blown into the corresponding transparent pot body 31 to heat the food in the transparent pot body 31, enabling simultaneous cooking of multiple foods and effectively improving cooking efficiency.

[0068] Embodiment 2: The difference between this embodiment and Embodiment 1 is that combined with Figure 9, the tension arm 5 is horizontally extended and arranged at the rear side of the frame-shaped bracket 23. The horizontally extended tension arm 5 can enhance the pulling force on the front part of the top cover 21, avoid the deformation of the rectangular opening 4 caused by the slight sinking of the top cover 21, ensure that the resistance is uniform when the transparent pot body 31 is pulled out along the preset track, and reduce jamming. In addition, the horizontally extended tension arm 5 covers the full length or most of the area at the rear side of the frame-shaped bracket 23, forming a continuous support belt, which can evenly share the load on the front part of the top cover 21 and reduce the bending deformation caused by local concentrated load.

[0069] For large-size cooking equipment with a top cover 21 having a relatively long length, compared with the tension arms 5 located at both ends of the frame-shaped bracket 23, the horizontally extended tension arm 5 applies a more uniform pulling force distribution on the front part of the top cover 21, generates a more uniform supporting force on the front part of the top cover 21, reduces local stress concentration, and the horizontally extended tension arm 5 has a larger coverage area, can more effectively share the load on the front part of the top cover 21, especially in the case of uniformly distributed load, and avoid the sinking of the front part of the top cover 21. When the hot air circulation device operates, the horizontally extended tension arm 5 can more effectively suppress vibration and impact, reduce the accumulation of minute displacements generated by vibration on the front part of the top cover 21, and avoid the deformation of the top cover 21.

[0070] The above are all the preferred embodiments of the present application, and do not limit the protection scope of the present application accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A cooking device with high stability, comprising an inner shell whose length is greater than its width, an outer shell covering the inner shell, a hot air circulation device, and a pot body assembly. The pot body assembly includes a transparent pot body and a handle. The inner shell includes a top cover, a base, and a frame-shaped support located between the top cover and the base for supporting the top cover. The opening of the frame-shaped support faces forward. It is characterized in that: The top cover and the base project forward beyond the opening of the frame-shaped bracket to form a rectangular open space at the front of the inner shell and the outer shell for placing the pot body assembly. The pot body assembly passes through the rectangular open space and is placed inside the inner shell. The top cover and the transparent pot body cooperate to form a cooking space, so that the front part of the transparent pot body is exposed at the rectangular open space and is at least flush with the side walls on the left and right sides of the outer shell. It further includes tension arms located at the end corners of the frame-shaped bracket. The tension arms extend upward from the base along the ends of the frame-shaped bracket and are tensioned with the top cover.

2. The cooking device with high stability according to claim 1, wherein: The width of the frame-shaped bracket does not exceed the middle part of the width of the top cover.

3. The cooking device with high stability according to claim 2, characterized in that: At least two sets of hot air circulation devices are provided inside the top cover, and at least two transparent pot bodies corresponding to the hot air circulation devices are provided at the rectangular open space; alternatively, a partition is provided inside the transparent pot body, and the partition divides the internal space of the transparent pot body into cooking cavities corresponding to the hot air circulation devices.

4. A cooking device with high stability according to claim 2 or 3, characterized in that: The tension arms are located at both ends on the rear side of the frame-shaped bracket; alternatively, the tension arms extend horizontally and are arranged on the rear side of the frame-shaped bracket.

5. The cooking device with high stability according to claim 4, characterized in that: The top ends of the tension arms cover above the top cover, and the bottom ends are located below the base.

6. The high-stability cooking device according to claim 5, wherein: Positioning grooves are provided at both the top and bottom of the tension arms, and positioning blocks extending into the positioning grooves are provided on both the top cover and the base.

7. A cooking device with high stability according to claim 4, characterized in that: The tension arms are connected to both the top cover and the base through locking parts.

8. A cooking device with high stability according to claim 1, characterized in that: It further includes support arms located at both ends of the frame-shaped bracket. The support arms are connected to the top cover, the base, and the frame-shaped bracket.

9. A cooking device with high stability according to claim 8, characterized in that: The contact area between the support arm and the top cover is larger than the contact area between the support arm and the base.

10. A cooking device with high stability according to claim 1, characterized in that: It further includes connecting plates located on both sides of the top cover. One end of the connecting plate is connected to the tension arm, and the other end is connected to the front part of the top cover.

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