Door assembly and cooking appliance

Abstract

The application provides a door assembly and a cooking equipment, and relates to the technical field of cooking equipment. The door assembly comprises a door body, a frame body, a door seal strip and a fixing member. The door body is used for opening and closing an opening of the cooking equipment and has an inner side surface adjacent to the cooking equipment. The frame body is arranged on the inner side surface of the door body and surrounds the periphery of the door body. The frame body is provided with a first mounting groove in the extending direction of the frame body. The door seal strip is assembled in the first mounting groove and has a ring structure matched with the first mounting groove. The door seal strip is provided with a second mounting groove in the extending direction of the door seal strip. The fixing member is arranged in the second mounting groove in the extending direction of the second mounting groove. The two sides of the fixing member in the extending direction can act on the corresponding groove walls of the second mounting groove, so that the two sides of the door seal strip elastically abut against the corresponding groove walls of the first mounting groove. The door assembly of the application avoids the falling or loosening of the door seal strip and improves the installation reliability of the door seal strip.

Description

Technical Field

[0001] This application relates to the field of cooking equipment technology, and more particularly to a door assembly and a cooking device. Background Technology

[0002] As an essential cooking appliance in modern kitchens, the sealing performance of steam ovens directly affects heating efficiency, energy consumption control, and operational safety. The door seal, as a core component of the steam oven's sealing system, must remain stable under high temperature and high pressure conditions to prevent steam leakage and heat loss.

[0003] In the existing technology, the door seal is fixed by a combination of plastic and metal parts, and the inner glass is connected to the metal parts by adhesive.

[0004] However, in high-temperature environments, this type of design is prone to the decrease in the bonding force between the door seal and the door panel due to the thermal expansion of the material, resulting in detachment or loosening, and thus low installation reliability. Utility Model Content

[0005] In view of the above problems, this application provides a door assembly and cooking device to solve the problem that the door seal and door panel of the steam oven in the prior art are prone to falling off or loosening, resulting in low installation reliability.

[0006] To achieve the above objectives, the embodiments of this application provide the following technical solutions:

[0007] A first aspect of this application provides a door assembly for a cooking device, the door assembly comprising:

[0008] The door is an opening for opening and closing the cooking equipment and has an inner side adjacent to the cooking equipment.

[0009] A frame is provided on the inner side of the door and is arranged around the perimeter of the door. The frame has a first annular mounting groove along its extension direction.

[0010] The door seal can be fitted into the first mounting groove and has a ring structure that fits the first mounting groove. The door seal has a second mounting groove along its extension direction.

[0011] The fastener is embedded in the second mounting groove along the extension direction of the second mounting groove; the two sides of the fastener along the extension direction can act on the corresponding groove wall of the second mounting groove so that the two sides of the door seal elastically abut against the corresponding groove wall of the first mounting groove.

[0012] The door assembly provided in this application includes a door seal fitted within a first mounting groove, forming an annular structure adapted to the groove. A fastener is embedded within a second mounting groove along its extension direction. The expansion force provided by the fastener is uniform across the entire circumference of the door seal, ensuring consistent pressure at every contact point between the door seal and the first mounting groove. This achieves a reliable circumferential seal, effectively preventing steam and heat leakage. The two sides of the fastener's extension direction act on the corresponding groove walls of the second mounting groove, generating a continuous and active pressing force between the door seal and the groove walls of the first mounting groove. Even if minor gaps appear due to material wear or thermal expansion and contraction, this elastic force automatically compensates, maintaining tight contact. This prevents the door seal from detaching or loosening, improves installation reliability, and ensures the steam sealing function of the door seal.

[0013] In one possible implementation, with the door seal assembled in the first mounting groove, the opening of the second mounting groove engages with the bottom wall of the first mounting groove, and the fastener protrudes from the opening and connects to the frame.

[0014] This effectively prevents the door seal from loosening or shaking, ensuring the stability of the door seal within the first mounting groove.

[0015] In one possible implementation, the bottom wall of the first mounting groove is provided with a first through hole, and the protruding part of the fastener is provided with a threaded hole, which is arranged opposite to the first through hole.

[0016] The door assembly also includes a connector that passes through the first through hole and is threaded into the threaded hole from the back side of the bottom wall of the first mounting groove.

[0017] This securely and rigidly locks the fasteners, door seals, and frame together. Compared to the elastic clamping of plastic clips or the adhesion of adhesives in related technologies, this method offers stronger resistance to pull-out, vibration, and impact, effectively preventing the door seals from falling off or loosening and improving the reliability of the door seal installation.

[0018] In one possible implementation, the door assembly further includes a liner, which is fixedly disposed on the inner side of the door body and has an annular structure adapted to the frame.

[0019] The inner lining is located on the back side of the bottom wall of the first mounting groove, and the inner lining has a second through hole opposite to the first through hole;

[0020] The connector passes through the second through hole and the first through hole and is threaded into the threaded hole.

[0021] In this way, the connectors can firmly connect the lining, frame, and fasteners simultaneously, forming a robust composite structure. This enhances the overall rigidity and bending resistance of the door edge, effectively prevents frame deformation, and ensures the long-term stability of the shape of the first mounting groove. Consequently, it effectively prevents the door seal from falling off or loosening, thus improving the reliability of the door seal installation.

[0022] In one possible implementation, the door seal includes two flanges, with a groove forming a second mounting groove spaced apart between the two flanges;

[0023] The bottom side of the fastener in the extension direction can act on the two flanges so that the two flanges abut against the bottom wall of the first mounting groove.

[0024] In this way, the bottom side of the fastener acts on the two flanges of the door seal, enabling the door seal to withstand greater pull-out force and vibration. This further enhances the fixing effect between the door seal and the frame, effectively preventing the door seal from falling off or loosening, and improving the installation reliability of the door seal.

[0025] In one possible implementation, the frame includes a first sidewall, and a second sidewall and a third sidewall located on both sides of the first sidewall, the first sidewall, the second sidewall and the third sidewall enclosing to form a first mounting groove;

[0026] The outer side wall of the door seal has a protrusion that abuts against the second and / or third side wall.

[0027] In this way, when the door seal is opened by the fastener, the protrusion will press tightly against the side wall of the first mounting groove. A large static friction force is generated between the protrusion and the side wall of the first mounting groove. The tight contact between the protrusion and the second and / or third side walls acts as damping and locking, preventing the door seal from shifting or rotating within the first mounting groove, thus enhancing the vibration resistance of the entire structure. Even if the width of the first mounting groove is slightly larger or the body size of the door seal is slightly smaller, the protrusion will automatically fill the gap after compression, ensuring tight contact and guaranteeing a stable and reliable seal between the door seal and the frame.

[0028] In one possible implementation, the second mounting groove is arranged in a ring shape, and the fastener has a ring structure that is adapted to the second mounting groove.

[0029] In this way, when the fastener is tightened and supported by the connector, the expansion force applied by the fastener to the entire circumference of the door seal is continuous and uniform. This ensures that the contact pressure is the same at every point on the contact surface between the door seal and the first mounting groove, thus forming a continuous, uninterrupted, and leak-free complete sealing structure. The uniform pressure provided by the continuous annular fastener can better mitigate minor uneven deformations of the door body, ensuring effective contact between the door seal and the frame at any point on the circumference, thereby improving sealing reliability.

[0030] In one possible implementation, the second mounting groove is arranged in a ring shape, and the fastener has a segmented structure adapted to the second mounting groove. Multiple segments of the fastener are spliced ​​together along the extension direction of the second mounting groove to form a ring structure.

[0031] This design avoids the deformation issues associated with integral ring-shaped fasteners during processing. Furthermore, it allows for more flexible material layout and cutting during production, reducing waste and improving material utilization. During assembly, the segmented fasteners can be adjusted and pressed into the second mounting slot segment by segment, resulting in lower dimensional tolerances for the fasteners and door seals, and easier assembly. If a segment of the fastener is accidentally damaged, only the damaged segment can be replaced, reducing maintenance costs and complexity.

[0032] In one possible implementation, the door seal further includes a sealing portion that protrudes from the door seal to the outside of the first mounting groove and is arranged in a ring shape.

[0033] In this way, when the door is closed, the sealing part is compressed, forming an elastic sealing interface between the door and the end panel of the cooking equipment. This prevents high-temperature steam and heat from leaking into the external environment and prevents cold air from entering the cooking cavity, thereby ensuring the energy efficiency, heating efficiency, and cooking effect of the cooking equipment.

[0034] A second aspect of this application provides a cooking device including a door assembly as described above.

[0035] The cooking apparatus of the second aspect includes the door assembly described in any embodiment of the first aspect, and therefore the cooking apparatus of the second aspect includes the structure and beneficial effects of the door assembly described in any embodiment of the first aspect.

[0036] In addition to the technical problems solved by the embodiments of this application, the technical features constituting the technical solutions, and the beneficial effects brought about by the technical features of these technical solutions described above, other technical problems that can be solved by the door components and cooking equipment provided by the embodiments of this application, other technical features included in the technical solutions, and the beneficial effects brought about by these technical features will be further explained in detail in the specific implementation. Attached Figure Description

[0037] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0038] Figure 1 A perspective view of a door assembly provided in an embodiment of this application;

[0039] Figure 2 A cross-sectional view of a door assembly provided in an embodiment of this application;

[0040] Figure 3 for Figure 2 A magnified view of a portion of point A in the middle;

[0041] Figure 4 for Figure 3 A schematic diagram of the structure behind the concealed door seal and connectors;

[0042] Figure 5 for Figure 3 Schematic diagram of the structure of the middle door seal;

[0043] Figure 6 for Figure 3 A schematic diagram of the structure of the fixed base.

[0044] Explanation of reference numerals in the attached figures:

[0045] 10. Door body; 20. Frame body; 201. First mounting groove; 202. First through hole; 21. First side wall; 22. Second side wall; 23. Third side wall; 30. Door seal; 301. Second mounting groove; 302. Groove; 31. Flanged edge; 32. Protrusion; 33. Sealing part; 40. Fixing component; 401. Threaded hole; 50. Connecting component; 60. Liner; 601. Second through hole. Detailed Implementation

[0046] First, those skilled in the art should understand that these embodiments are merely for explaining the technical principles of this application and are not intended to limit the scope of protection of this application. Those skilled in the art can make adjustments as needed to adapt to specific application scenarios.

[0047] Secondly, it should be noted that, in the description of the embodiments of this application, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application according to the specific circumstances.

[0048] As described in the background section, steam ovens in related technologies suffer from the problem of door seals easily detaching or loosening from the door panel, resulting in low installation reliability. This issue arises because, under harsh operating environments of high temperature and humidity, there are significant differences in the coefficients of thermal expansion between the different materials used to fix the door seal—the plastic and metal parts, and the door seal itself (usually silicone). This mismatch leads to significant stress within the fixing structure during repeated thermal cycles, causing a decrease in the clamping force of the plastic clamping parts, which are prone to creep and stress relaxation. Simultaneously, the adhesive bonding interface fails due to high-temperature aging and thermal fatigue. Ultimately, the original fixing method cannot maintain sufficient bonding force, leading to loosening or detachment of the door seal and a decline in sealing performance.

[0049] To address the aforementioned technical problems, this application provides a door assembly and a cooking device. The door assembly includes: a door body for opening and closing the cooking device, and having an inner side adjacent to the cooking device; a frame body disposed on the inner side of the door body and arranged around the perimeter of the door body, the frame body having an annular first mounting groove along its own extending direction; a door seal strip capable of being fitted into the first mounting groove and having an annular structure adapted to the first mounting groove, the door seal strip having a second mounting groove along its own extending direction; and a fastener, built into the second mounting groove along the extending direction of the second mounting groove; the two sides of the fastener extending direction can act on the corresponding groove walls of the second mounting groove, so that the two sides of the door seal strip elastically abut against the corresponding groove walls of the first mounting groove.

[0050] The door assembly provided in this application includes a door seal fitted within a first mounting groove, forming an annular structure adapted to the groove. A fastener is embedded within a second mounting groove along its extension direction. The expansion force provided by the fastener is uniform across the entire circumference of the door seal, ensuring consistent pressure at every contact point between the door seal and the first mounting groove. This achieves a reliable circumferential seal, effectively preventing steam and heat leakage. The two sides of the fastener's extension direction act on the corresponding groove walls of the second mounting groove, generating a continuous and active pressing force between the door seal and the groove walls of the first mounting groove. Even if minor gaps appear due to material wear or thermal expansion and contraction, this elastic force automatically compensates, maintaining tight contact. This prevents the door seal from detaching or loosening, improves installation reliability, and ensures the steam sealing function of the door seal.

[0051] To make the above-mentioned objectives, features, and advantages of the embodiments of this application more apparent and understandable, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0052] Please refer to the attached document. Figure 1-6 A first aspect of this application provides a door assembly for a cooking device, the door assembly comprising:

[0053] The door 10 has an opening for opening and closing the cooking equipment and has an inner side adjacent to the cooking equipment.

[0054] The frame 20 is located on the inner side of the door 10 and is arranged around the periphery of the door 10. The frame 20 has an annular first mounting groove 201 along its own extension direction.

[0055] The door seal 30 can be fitted into the first mounting groove 201 and has an annular structure that is compatible with the first mounting groove 201. The door seal 30 has a second mounting groove 301 along its own extension direction.

[0056] The fastener 40 is embedded in the second mounting groove 301 along the extension direction of the second mounting groove 301; the two sides of the fastener 40 in the extension direction can act on the corresponding groove wall of the second mounting groove 301 so that the two sides of the door seal 30 elastically abut against the corresponding groove wall of the first mounting groove 201.

[0057] In this embodiment, please refer to Figure 1As shown, the frame 20 is located on the inner side of the door body 10 and is arranged around the perimeter of the door body 10. The frame 20 (which can be a metal part) serves as the skeleton of the door body 10, ensuring the rigidity and durability of the entire door assembly structure.

[0058] In this embodiment, please refer to Figure 2 and Figure 4 As shown, the annular first mounting groove 201 surrounding the frame 20 provides a precise and continuous positioning and installation space for the door seal 30, laying the foundation for the door seal 30 to achieve a uniform circumferential seal. Please refer to... Figure 5 As shown, the door seal 30 has a second mounting groove 301 along its extension direction, providing space for the installation of the fastener 40. The groove wall of the second mounting groove 301 forms the "elastic arms" of the door seal 30; when subjected to the compressive force of the internal fastener 40, these elastic arms can undergo controllable and uniform deformation.

[0059] In this embodiment, please refer to Figure 3 As shown, the fastener 40 is embedded within the second mounting groove 301 along its extension direction. The fastener 40 applies force from inside the second mounting groove 301 towards both sides of the door seal 30, pushing the door seal 30 outwards so that its sides elastically abut against the corresponding groove walls of the first mounting groove 201. This method is more direct and provides a more uniform force distribution than external clamping. In high-temperature environments, the door seal 30 expands, but its expansion force is constrained and guided by the rigid fastener 40, thus enhancing the pressure on both sides. When cooled, the door seal 30 contracts, but the elastic recovery force of the door seal 30 and the continuous supporting force of the fastener 40 work together to prevent the door seal 30 from loosening from the first mounting groove 201. This design cleverly utilizes the thermal expansion characteristics of the door seal 30 to enhance the seal, rather than allowing it to be damaged.

[0060] The door assembly provided in this application includes a door seal 30 fitted within a first mounting groove 201 in an annular structure adapted to the first mounting groove 201. A fastener 40 is embedded within a second mounting groove 301 along its extension direction. The expansion force provided by the fastener 40 is uniform across the entire circumference of the door seal 30, ensuring consistent pressure at every contact point between the door seal 30 and the first mounting groove 201. This achieves a reliable circumferential seal, effectively preventing steam and heat leakage. The two sides of the fastener 40's extension direction act on the corresponding groove walls of the second mounting groove 301, generating a continuous and active pressing force between the door seal 30 and the groove walls of the first mounting groove 201. Even if minor gaps appear due to material wear or thermal expansion and contraction, this elastic force automatically compensates, maintaining tight contact. This prevents the door seal 30 from falling off or loosening, improves the installation reliability of the door seal 30, and ensures its steam sealing function.

[0061] In one possible implementation, please see Figure 3 , Figure 4 and Figure 5 As shown, with the door seal 30 assembled in the first mounting groove 201, the groove opening 302 of the second mounting groove 301 engages with the bottom wall of the first mounting groove 201, and the fastener 40 protrudes from the groove opening 302 and connects with the frame 20.

[0062] In this embodiment, the opening 302 of the second mounting groove 301 engages with the bottom wall of the first mounting groove 201, allowing the back of the door seal 30 to be closed and supported by the bottom wall of the first mounting groove 201. A portion of the fastener 40 protrudes from the opening 302 and connects to the frame 20, thereby pressing the bottom of the door seal 30 tightly against the bottom wall of the first mounting groove 201. This effectively prevents the door seal 30 from loosening or shaking, ensuring the stability of the door seal 30 within the first mounting groove 201.

[0063] Furthermore, the fastener 40 protrudes from the slot 302 and connects to the frame 20. Both the fastener 40 and the frame 20 are rigid components. This direct connection between rigid components (fastener 40 and frame 20) is far stronger than connections made with plastic clips or adhesive. It can withstand greater pull-out forces and vibrations, effectively preventing the door seal 30 from falling off or loosening, thus improving the installation reliability of the door seal 30. The connection points (such as the tightening force of screws) are borne by the fastener 40 and the frame 20. The door seal 30 is only subjected to uniform compressive and expansion forces, and will not be cut or excessively compressed by screws or other connecting components, resulting in permanent deformation or damage, thus extending the service life of the door seal 30.

[0064] In one possible implementation, please see Figure 4 As shown, the bottom wall of the first mounting groove 201 has a first through hole 202. Please refer to [link / reference]. Figure 6 As shown, the protruding part of the fastener 40 has a threaded hole 401, which is positioned opposite to the first through hole 202.

[0065] Please see Figure 3 As shown, the door assembly also includes a connector 50, which can be a screw. The connector 50 passes through the first through hole 202 from the back side of the bottom wall of the first mounting groove 201 and is threadedly connected to the threaded hole 401.

[0066] In this embodiment, during assembly, the fastener 40 is first placed inside the second mounting groove 301 of the door seal 30 via the slot 302, ensuring that the first through hole 202 is aligned with the threaded hole 401. Then, the connector 50 passes through the first through hole 202 from the back side of the bottom wall of the first mounting groove 201 and is threadedly connected to the threaded hole 401 on the protruding part of the fastener 40. This achieves a firm and rigid mechanical lock between the fastener 40, the door seal 30, and the frame 20. Compared with the elastic clamping of plastic clips or the adhesion of adhesives in related technologies, it has stronger pull-out resistance and stronger vibration and impact resistance, effectively preventing the door seal 30 from falling off or loosening, and improving the installation reliability of the door seal 30.

[0067] During tightening, the connector 50 firmly pulls the retainer 40, along with the door seal 30, towards the bottom wall of the first mounting groove 201. This force ensures a tight fit between the bottom of the door seal 30 and the bottom wall of the first mounting groove 201. Because the retainer 40 is evenly tightened against the bottom wall of the first mounting groove 201, the expansion force exerted by the retainer 40 on both sides of the door seal 30 is consistent throughout the circumference. This avoids uneven sealing pressure caused by localized insecure fixing, thus achieving a uniform seal in the circumferential direction. Even if there are minor manufacturing tolerances in the first mounting groove 201 or the door seal 30, the tightening force of the connector 50 can compensate for them, ensuring that the final sealing surface pressure meets the design requirements.

[0068] If the door seal 30 needs to be replaced due to aging, simply unscrew the connector 50, remove the old door seal, replace it with the new one, and tighten it again. The entire process requires no destructive operation and no cleaning of residual adhesive, reducing maintenance costs and time.

[0069] In one possible implementation, please see Figure 3 As shown, the door assembly also includes a liner 60, which is fixedly disposed on the inner side of the door body 10, and the liner 60 has a ring structure adapted to the frame 20.

[0070] Please see Figure 4 As shown, the inner liner 60 is partially disposed on the back side of the bottom wall of the first mounting groove 201, and the inner liner 60 has a second through hole 601 opposite to the first through hole 202;

[0071] The connector 50 passes through the second through hole 601 and the first through hole 202 and is threadedly connected to the threaded hole 401.

[0072] In this embodiment, the inner lining 60 and the frame 20 can both be made of metal. The inner lining 60 is fixedly disposed on the inner side of the door body 10, and part of the inner lining 60 is disposed on the back side of the bottom wall of the first mounting groove 201. The connector 50 passes through the second through hole 601 and the first through hole 202 and is threadedly connected to the threaded hole 401. When the connector 50 is tightened, the tightening force will pass through the inner lining 60 and the frame 20 in sequence, and finally tighten the fixing member 40. The inner lining 60 is fixedly disposed on the inner side of the door body 10, and the inner lining 60 has a ring structure that fits the frame 20. The connector 50 can simultaneously and firmly connect the inner lining 60, the frame 20 and the fixing member 40 to form a strong composite structure, which can enhance the overall rigidity and bending resistance of the edge of the door body 10, and can effectively prevent the deformation of the frame 20, ensuring the long-term stability of the shape of the first mounting groove 201, thereby effectively avoiding the door seal 30 from falling off or loosening, and improving the installation reliability of the door seal 30.

[0073] During assembly, the inner liner 60 can be installed onto the door body 10 first. Then, using the second through hole 601 as a guide, the frame 20 can be more easily positioned and installed, ensuring accurate alignment of the first through hole 202 and the second through hole 601. Furthermore, the inner liner 60, frame 20, fastener 40, and door seal 30 can be securely connected in one go via the connector 50. This reduces assembly difficulty and improves assembly accuracy and speed.

[0074] In one possible implementation, please see Figure 5 As shown, the door seal 30 includes two flanges 31, and the two flanges 31 are provided with a slot 302 that forms a second mounting groove 301 at a relative interval between them;

[0075] Please see Figure 3 As shown, the bottom side of the fastener 40 in the extending direction can act on the two flanges 31 so that the two flanges 31 abut against the bottom wall of the first mounting groove 201.

[0076] In this embodiment, the fastener 40 protrudes from the slot 302 and connects to the frame 20. Both sides of the fastener 40 extending in the direction of extension can act on the corresponding groove walls of the second mounting groove 301, allowing the two sides of the door seal 30 to elastically abut against the corresponding groove walls of the first mounting groove 201, thereby forming a first seal. Furthermore, the bottom side of the fastener 40 extending in the direction of extension can act on the two flanges 31, causing the two flanges 31 to abut against the bottom wall of the first mounting groove 201, thereby forming a second seal. The first seal and the second seal form a double sealing barrier, further enhancing the sealing reliability between the door seal 30 and the frame 20.

[0077] The fastener 40 extends along both sides of the second mounting groove 301, causing the door seal 30 to elastically abut against the corresponding groove wall of the first mounting groove 201. This creates a continuous and active clamping force between the door seal 30 and the groove wall of the first mounting groove 201, preventing the door seal 30 from falling off or loosening. The fastener 40 extends along the bottom side of the two flanges 31 of the door seal 30, allowing the door seal 30 to withstand greater pull-out force and vibration. This further enhances the fixing effect between the door seal 30 and the frame 20, effectively preventing the door seal 30 from falling off or loosening and improving the installation reliability of the door seal 30.

[0078] In one possible implementation, please see Figure 4 As shown, the frame 20 includes a first sidewall 21, and a second sidewall 22 and a third sidewall 23 located on both sides of the first sidewall 21. The first sidewall 21, the second sidewall 22 and the third sidewall 23 enclose and form a first mounting groove 201.

[0079] Please see Figure 3 As shown, the outer side wall of the door seal 30 is provided with a protrusion 32, which abuts against the second side wall 22 and / or the third side wall 23.

[0080] In this embodiment, the protrusion 32 of the door seal 30 forms an interference fit or elastic abutment with the second sidewall 22 and / or the third sidewall 23. When the door seal 30 is opened by the fastener 40, the protrusion 32 presses tightly against the sidewall of the first mounting groove 201. A large static friction force can be generated between the protrusion 32 and the sidewall of the first mounting groove 201. The tight contact between the protrusion 32 and the second sidewall 22 and / or the third sidewall 23 plays a damping and locking role, preventing the door seal 30 from shifting or rotating within the first mounting groove 201, thus enhancing the vibration resistance of the entire structure.

[0081] Minor dimensional tolerances are unavoidable in the manufacturing and assembly of components such as the door seal 30 and frame 20. The elasticity of the protrusion 32 can effectively absorb these deviations. Even if the width of the first mounting groove 201 is slightly larger or the body size of the door seal 30 is slightly smaller, the protrusion 32 can automatically fill the gap after being compressed, ensuring tight contact and guaranteeing a stable and reliable sealing effect between the door seal 30 and the frame 20.

[0082] In one possible implementation, the second mounting groove 301 is arranged in a ring shape, and the fastener 40 is arranged in a ring shape that is adapted to the second mounting groove 301.

[0083] In this embodiment, the fixing member 40 has a continuous annular structure adapted to the second mounting groove 301. When the fixing member 40 is tightened by the connecting member 50 and supports the door seal 30, the expansion force applied by the fixing member 40 to the entire circumference of the door seal 30 is continuous and uniform. This ensures that the contact pressure is the same at every point on the entire contact surface between the door seal 30 and the first mounting groove 201, thereby forming a continuous, uninterrupted, and leak-free complete sealing structure. The uniform pressure provided by the continuous annular fixing member 40 can better mitigate the minor uneven deformation of the door body, ensuring that the door seal 30 and the frame 20 maintain effective contact at any position on the circumference, thus improving sealing reliability.

[0084] During assembly, simply insert a single ring-shaped fastener 40 into the second mounting groove 301 of the door seal 30, then install the door seal 30 (with the fastener 40 built-in) into the first mounting groove 201 of the frame 20, and finally secure it with the connector 50. When the connector 50 is tightened, the tension is evenly transmitted to the entire circumference of the door seal 30 through the continuous fasteners 40, resulting in a more balanced mechanical distribution and avoiding stress concentration points. This not only improves sealing but also prevents excessive local stretching or compression of the door seal 30, extending its service life.

[0085] In one possible implementation, the second mounting groove 301 is arranged in a ring shape, and the fastener 40 has a segmented structure adapted to the second mounting groove 301. Multiple segments of the fastener 40 are spliced ​​together along the extension direction of the second mounting groove 301 to form a ring structure.

[0086] In this embodiment, the fastener 40 is decomposed into multiple segmented structures that adapt to the second mounting groove 301, avoiding the deformation problem of the integral ring-shaped fastener 40 during processing. Furthermore, in production, it allows for more flexible layout and material cutting, reducing scrap and improving material utilization. During assembly, the segmented fastener 40 can be adjusted and pressed into the second mounting groove 301 segment by segment, resulting in lower dimensional tolerance requirements for the fastener 40 and the door seal 30, making assembly easier. If a segment of the fastener 40 is accidentally damaged, only the damaged segment can be replaced, reducing maintenance costs and complexity.

[0087] Furthermore, each protruding portion of the fastener 40 is provided with a threaded hole 401, thereby ensuring that each fastener 40 can be firmly and rigidly mechanically locked to the frame 20. This effectively prevents the door seal 30 from falling off or loosening, improving the installation reliability of the door seal 30.

[0088] In one possible implementation, please see Figure 3 As shown, the door seal 30 also includes a sealing part 33, which protrudes from the door seal 30 to the outside of the first mounting groove 201 and is arranged in a ring shape.

[0089] In this embodiment, the sealing part 33 is the portion that directly contacts the end panel of the cooking equipment. When the door is closed, the sealing part 33 is compressed, forming an elastic sealing interface between the door and the end panel of the cooking equipment. This prevents high-temperature steam and heat from leaking into the external environment and prevents cold air from entering the cooking cavity, thereby ensuring the energy efficiency, heating efficiency, and cooking effect of the cooking equipment. Furthermore, the effective seal between the door assembly and the end panel of the cooking equipment via the sealing part 33 of the door seal 30 prevents accidental leakage of high-temperature steam, avoiding burns to the user and improving the safety of using the cooking equipment.

[0090] A second aspect of this application also provides a cooking device, including the door assembly as described above.

[0091] Since the cooking device in this embodiment includes the door assembly described in any of the above embodiments, the structure and beneficial effects of the cooking device including the door assembly will not be described in detail here.

[0092] The various embodiments or implementation methods described in this specification are presented in a progressive manner. Each embodiment focuses on the differences from other embodiments, and the same or similar parts between the embodiments can be referred to each other.

[0093] It should be noted that the terms "one embodiment," "embodiment," "exemplary embodiment," and "some embodiments" used in the specification indicate that the described embodiment may include a specific feature, structure, or characteristic, but not every embodiment necessarily includes that specific feature, structure, or characteristic. Furthermore, such phrases do not necessarily refer to the same embodiment. Moreover, when a specific feature, structure, or characteristic is described in connection with an embodiment, implementing such a feature, structure, or characteristic in conjunction with other embodiments, whether explicitly described or not, is within the knowledge scope of those skilled in the art.

[0094] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A door assembly for a cooking appliance, characterized in that, The door assembly includes: The door (10) has an opening for opening and closing the cooking equipment and has an inner side adjacent to the cooking equipment. A frame (20) is provided on the inner side of the door (10) and is arranged around the periphery of the door (10). The frame (20) has an annular first mounting groove (201) along its own extension direction. The door seal (30) can be fitted into the first mounting groove (201) and has an annular structure that is adapted to the first mounting groove (201). The door seal (30) has a second mounting groove (301) along its own extension direction. The fastener (40) is embedded in the second mounting groove (301) along the extension direction of the second mounting groove (301); the two sides of the fastener (40) in the extension direction can act on the corresponding groove wall of the second mounting groove (301) so that the two sides of the door seal (30) elastically abut against the corresponding groove wall of the first mounting groove (201).

2. The door assembly according to claim 1, characterized in that, When the door seal (30) is assembled in the first mounting groove (201), the groove (302) of the second mounting groove (301) is engaged with the bottom wall of the first mounting groove (201), and the fastener (40) protrudes from the groove (302) and is connected to the frame (20).

3. The door assembly according to claim 2, characterized in that, The bottom wall of the first mounting groove (201) is provided with a first through hole (202), and the protruding part of the fastener (40) is provided with a threaded hole (401), and the threaded hole (401) is arranged opposite to the first through hole (202); The door assembly also includes a connector (50) that passes through the first through hole (202) from the back side of the bottom wall of the first mounting groove (201) and is threadedly connected to the threaded hole (401).

4. The door assembly according to claim 3, characterized in that, The door assembly also includes a liner (60), which is fixedly disposed on the inner side of the door body (10) and the liner (60) has an annular structure adapted to the frame (20); The inner lining (60) is located on the back side of the bottom wall of the first mounting groove (201), and the inner lining (60) has a second through hole (601) opposite to the first through hole (202). The connector (50) passes through the second through hole (601) and the first through hole (202) and is threadedly connected to the threaded hole (401).

5. The door assembly according to claim 2, characterized in that, The door seal (30) includes two flanges (31), and the two flanges (31) are provided with slots (302) that form the second mounting groove (301) at relative intervals. The bottom side of the fastener (40) in the extending direction can act on the two flanges (31) so that the two flanges (31) abut against the bottom wall of the first mounting groove (201).

6. The door assembly according to claim 1, characterized in that, The frame (20) includes a first sidewall (21), and a second sidewall (22) and a third sidewall (23) located on both sides of the first sidewall (21). The first sidewall (21), the second sidewall (22) and the third sidewall (23) enclose the first mounting groove (201). The outer side wall of the door seal (30) is provided with a protrusion (32), which abuts against the second side wall (22) and / or the third side wall (23).

7. The door assembly according to claim 1, characterized in that, The second mounting groove (301) is arranged in a ring shape, and the fastener (40) has a ring structure that is adapted to the second mounting groove (301).

8. The door assembly according to claim 1, characterized in that, The second mounting groove (301) is arranged in a ring shape, and the fastener (40) is a segmented structure adapted to the second mounting groove (301). Multiple segments of the fastener (40) are spliced ​​together along the extension direction of the second mounting groove (301) to form a ring structure.

9. The door assembly according to any one of claims 1-8, characterized in that, The door seal (30) also includes a sealing part (33), which protrudes from the door seal (30) to the outside of the first mounting groove (201) and is arranged in a ring shape.

10. A cooking device, characterized in that, Includes the door assembly as described in any one of claims 1 to 9 above.

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