Door body assembly and cooking equipment

Abstract

The invention discloses a door body assembly which is applied to cooking equipment and comprises a door body, a choke groove is formed in the inner surface of the door body, and the choke groove is provided with a choke groove linear section and a choke groove corner section; the choke plate and the choke groove form a choke structure; the outer periphery of the choke plate is provided with a linear choking straight line edge corresponding to the choking groove straight line section and a choking corner edge corresponding to the choking groove corner section, the choking corner edge comprises two linear anti-leakage stable-phase cooperation edges which form an included angle, and each anti-leakage stable-phase cooperation edge and the two adjacent choking straight line edges form an included angle. The invention further discloses the cooking equipment with the door body assembly. The invention has the beneficial effects that the microwave leakage rate at the four corners can be effectively reduced, and the microwave leakage rate is within an ideal range of 0.4-1.2 wm / cm < 2 >.

Description

Technical Field

[0001] The present invention relates to a door body assembly and a cooking device, belonging to the technical field of kitchen appliances. Background Art

[0002] At present, cooking devices such as steam ovens and microwave ovens have the function of microwave cooking. For the microwave function, the shielding effect of the door body is very important. If the shielding effect is not ideal, there will be a safety hazard of microwave leakage.

[0003] In the prior art, for the door body assembly of a cooking device, a choke groove and a choke plate are provided on its inner surface to form a choke structure, and the choke structure can shield the microwave in the inner container of the cooking device. It is found through detection that for the vast majority of choke structures, the microwave leakage at its four sides is within the ideal range of 0.4 - 1.2 wm / cm 2 However, the microwave leakage at its four corners is as high as 2.5 - 3.3 wm / cm 2 which is much higher than the ideal range of 0.4 - 1.2 wm / cm 2 . Summary of the Invention

[0004] The purpose of the present invention is to provide a door body assembly and a cooking device, which can effectively reduce the microwave leakage at the four corners and make the microwave leakage within the ideal range of 0.4 - 1.2 wm / cm 2 .

[0005] The present invention is realized by the following technical solutions.

[0006] A door body assembly is applied to a cooking device and includes a door body. An inner surface of the door body has a choke groove formed by being recessed along its edge. The choke groove has four choke groove straight segments. The four choke groove straight segments are linear and any two adjacent choke groove straight segments are perpendicular to each other. Any two adjacent choke groove straight segments are connected by an arc-shaped choke groove corner segment;

[0007] And a choke plate is fixed on the inner surface of the door body and is located within the part surrounded by the choke groove; there is a gap between an outer periphery of the choke plate and an outer edge of the choke groove, so that the choke plate blocks part of the choke groove and forms a choke structure with the choke groove;

[0008] The outer periphery of the choke plate has a choke straight edge corresponding to the choke groove straight segment and a choke corner edge corresponding to the choke groove corner segment. The choke corner edge includes two linear and mutually angled anti-leakage and stability synergistic edges, and each anti-leakage and stability synergistic edge has an angle with two adjacent choke straight edges.

[0009] As a further improvement of the present invention, the choke corner edge further includes a choke corner remainder edge of any line type.

[0010] As a further improvement of the present invention, both ends of the choke corner remainder edge are respectively connected to two of the anti-leakage and stability-phase synergistic edges, and / or, the anti-leakage and stability-phase synergistic edge and the choke straight edge.

[0011] As a further improvement of the present invention, one ends of two of the anti-leakage and stability-phase synergistic edges are connected, and the other ends of two of the anti-leakage and stability-phase synergistic edges are respectively connected to the corresponding choke straight edges.

[0012] As a further improvement of the present invention, two of the anti-leakage and stability-phase synergistic edges are symmetrically arranged with respect to the bisector of the choke corner edge.

[0013] As a further improvement of the present invention, the angle between the anti-leakage and stability-phase synergistic edge and its corresponding choke straight edge is an obtuse angle, and the angle between two of the anti-leakage and stability-phase synergistic edges is an obtuse angle.

[0014] As a further improvement of the present invention, the choke straight edge has a plurality of linearly spaced-apart straight-edge tooth grooves to form a plurality of straight-edge choke teeth; and, two straight-edge tooth grooves adjacent to the choke corner edge form a corner choke tooth.

[0015] As a further improvement of the present invention, the choke straight edge has a plurality of linearly spaced-apart straight-edge tooth grooves to form a plurality of straight-edge choke teeth; the choke corner edge has at least one corner-edge tooth groove to form at least two corner choke teeth.

[0016] As a further improvement of the present invention, the corner-edge tooth groove is provided as one and is located at the bisector of the choke corner edge, or, the corner-edge tooth groove is provided as at least two and is arranged at equal intervals on the choke corner edge.

[0017] As a further improvement of the present invention, the depth of the body of the corner-edge tooth groove is less than the depth of the body of the straight-edge tooth groove.

[0018] A cooking device includes the door body assembly.

[0019] Advantages of the present invention:

[0020] Two straight-line anti-leakage and stability-phase synergistic edges with an included angle are provided on the choke corner edge. Through two segmented straight-line structures, the physical mechanism of suppressing geometric mutations and optimizing the field distribution is used to optimize the choke corner edge in four aspects: impedance matching, field strength uniformity, reflection controllability, and processing stability, thereby effectively reducing the microwave leakage amount, and reducing the microwave leakage amount at the four corners of the door body assembly to the ideal range of 0.4 - 1.2 wm / cm 2。 BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The preferred embodiments of the present invention will be described in detail below with reference to the drawings to facilitate understanding of the objectives and advantages of the present invention, where:

[0022] Figure 1 is a schematic structural diagram of the door body assembly;

[0023] Figure 2 is a schematic cross-sectional view of the choke structure;

[0024] Figure 3 is a partial schematic diagram of the door body assembly of Embodiment 1 with respect to the choke turning edge;

[0025] Figure 4 is a partial schematic diagram of the door body assembly of Embodiment 2 with respect to the choke turning edge;

[0026] Figure 5 is a partial schematic diagram of the door body assembly of Embodiment 3 with respect to the choke turning edge;

[0027] Figure 6 is a partial schematic diagram of the door body assembly of Embodiment 4 with respect to the choke turning edge. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0028] The present invention will be further described in detail below with reference to the drawings and embodiments.

[0029] The orientation terms such as up, down, left, right, front, back, front side, back side, top, bottom, etc. mentioned or possibly mentioned in this specification are defined with respect to the structures shown in the respective drawings. The terms "inner" and "outer" respectively refer to the directions towards or away from the geometric center of a specific component. They are relative concepts and may therefore change accordingly depending on their different positions and different usage states. Therefore, these or other orientation terms should not be construed as restrictive terms.

[0030] The door body assembly of the embodiment of the present application is applied in a cooking device and opens or closes the inner cavity of the cooking device through a switch. Refer to Figures 1-6, the door body assembly includes a door body 1, a choke plate 3, an outer door frame 11, and an outer door glass 12. Among them, the door body 1 is divided into an inner surface and an outer surface. The inner surface is the side facing the inner container, and the outer surface is the other side facing away from the inner container. The outer door frame 11 is connected to the edge of the door body 1, and the outer door glass 12 is fixed on the outer surface of the door body 1. There is a choke groove 2 on the inner surface of the door body 1. The choke groove 2 is arranged along the edge of the door body 1 and is recessed to form a rectangular closed structure. The choke groove 2 has four choke groove straight segments 21. The four choke groove straight segments 21 are linear and any two adjacent choke groove straight segments 21 are perpendicular to each other. Any two adjacent choke groove straight segments 21 are connected by an arc-shaped choke groove corner segment 22.

[0031] The choke plate 3 is fixed on the inner surface of the door body 1 and is located within the part of the inner surface surrounded by the choke groove 2. There is a gap between the outer periphery of the choke plate 3 and the outer edge of the choke groove 2, so that the choke plate 3 blocks part of the choke groove 2 and forms a choke structure with the choke groove 2.

[0032] The outer periphery of the choke plate 3 has a choke straight edge 31 corresponding to the choke groove straight segment 21 and a choke corner edge 32 corresponding to the choke groove corner segment 22. Among them, the choke corner edge 32 includes two linear and angled anti-leakage and stability-cooperating edges 321, and each anti-leakage and stability-cooperating edge 321 has an angle with the two adjacent choke straight edges 31.

[0033] In the prior art, the microwave leakage at the four corners of the door body assembly corresponding to the choke groove 2 and the choke plate 3 is relatively high, that is, the microwave leakage at the arc corners of the choke structure is relatively high. The applicant has found through research that the reasons for the high leakage include the following:

[0034] I. Impedance continuity breakdown

[0035] The electromagnetic shielding efficiency of the choke groove is based on the 1 / 4 wavelength short-circuit transmission line theory. Its core is to achieve the phase inversion and cancellation of microwave energy through impedance matching. The arc edge will introduce geometric mutations at the four corners, destroying the continuity of the cross-section of the transmission line, resulting in the deviation of the electromagnetic field distribution in the local area from the ideal state. This geometric mutation will cause impedance mismatch, making part of the microwave energy unable to be effectively cancelled through phase inversion, and then leaking from the door body gap.

[0036] II. Electromagnetic field edge effect

[0037] The electric field distribution of microwaves at the edges of metal structures follows the law of edge effect. The smaller the radius of curvature, the more significant the field strength concentration phenomenon. Although the curvature characteristics of the arc edges at the four corners are better than those of acute angles, local electric field convergence points will still form. This field strength concentration may cause two problems: one is that the local electric field strength exceeds the withstand voltage threshold of the door body material, forming microdischarge or breakdown channels; the other is that the uneven field strength distribution causes some energy to bypass the shielding path of the choke groove and leak directly from the high field strength area.

[0038] III. Reflection path problem

[0039] The reflection path accuracy of microwaves in the door body choke structure directly determines the leakage suppression effect. The geometric characteristics of the arc edges at the four corners will cause the microwaves to scatter and diffract: on the one hand, the incident wave undergoes non-directional reflection on the arc surface, and part of the energy deviates from the preset path; on the other hand, the curvature of the arc edge will trigger the diffraction effect, generating diffracted waves that bypass the choke groove. Both of these phenomena will weaken the cancellation effect of phase inversion and form residual leakage.

[0040] IV. Processing and assembly accuracy problem

[0041] The assembly accuracy of the door body choke structure directly affects the shielding performance. The arc edges have extremely high requirements for die processing and stamping processes: firstly, the radius of curvature of the arc corners needs to be strictly matched with the choke groove. If there is a deviation of more than ±0.1 mm, local gaps will appear between the choke plate and the groove body; secondly, there is a springback effect after the metal sheet is stamped into shape, and the springback compensation of the arc corners needs to be achieved through complex die design, and the process stability is difficult to guarantee.

[0042] In this embodiment, by setting two straight and angled anti-leakage and phase-stabilizing synergistic edges 321 on the choke turning edges 32, the arc corner structure of the choke structure is damaged and changed, thereby reducing the microwave leakage amount. Specifically, it is elaborated in detail from the following aspects:

[0043] 1. Impedance continuity optimization

[0044] The two anti-leakage and phase-stabilizing synergistic edges 321 effectively control the impedance change gradient at the four corners through segmented geometric transitions. The included angle between the two anti-leakage and phase-stabilizing synergistic edges 321, that is, the difference in their extension directions, decomposes the original curvature mutation of the arc edge into two linear impedance adjustments, enabling the electromagnetic wave to gradually adapt to the impedance change during transmission. Therefore, the boundary conditions of the 1 / 4 wavelength short-circuit transmission line theory can be maintained, avoiding local impedance mismatch caused by continuous curvature change of the arc edge. In addition, the two anti-leakage and phase-stabilizing synergistic edges 321 also suppress the excitation of higher-order modes, reduce the energy reflection loss caused by multimode coupling, and ensure the integrity of phase inversion cancellation.

[0045] 2. Mitigation of electric field concentration

[0046] The two-segment anti-leakage and stability-enhancing cooperative edge 321 disperses the electric field line density at the four corners by decomposing the single arc edge into two linear extension directions. The included angle area formed by the two anti-leakage and stability-enhancing cooperative edges 321 enables the uniform distribution of electric field energy along the two edges, avoiding the high electric field strength concentration at the curvature center point of the arc edge. Therefore, the local electric field strength gradient is reduced, the peak field strength is lower than the breakdown threshold of the door body material, and at the same time, the formation of the energy diffraction path caused by the distortion of the electric field lines is suppressed, ensuring that the electric field energy is restricted within the reflection boundary designed by the choke groove.

[0047] 3. Reflection path correction

[0048] The two-segment anti-leakage and stability-enhancing cooperative edge 321 optimizes the microwave propagation path through the cooperative reflection mechanism. The straight boundary characteristic decomposes the scattered wave caused by the arc edge into two controllable specular reflections. The combined action of the two greatly reduces the phase error between the reflected wave and the original leakage wave. In addition, due to the included angle between the two anti-leakage and stability-enhancing cooperative edges 321, the formed corner structure weakens the diffracted wave intensity by reducing the cross-sectional area of the diffraction path, reducing the proportion of diffracted energy leakage to a negligible level. The geometric cooperation of the two-segment anti-leakage and stability-enhancing cooperative edges 321 ensures the certainty of the reflection path, and the efficiency of phase inversion cancellation can be improved without relying on phased sequential control.

[0049] 4. Improvement of processing accuracy

[0050] The edge type setting of the two-segment anti-leakage and stability-enhancing cooperative edge 321 reduces the processing complexity compared to the arc edge. The manufacturing tolerance of the straight stamping die can be controlled within ±0.02 mm, and the springback direction is single. The springback error can be eliminated through pre-compensation design. This process characteristic greatly improves the uniformity of the assembly gap between the choke plate 3 and the choke groove 2, effectively avoiding leakage caused by excessive local gaps.

[0051] In addition, it should be noted that:

[0052] Theoretically, setting the corner section 22 of the choke groove as a straight structure instead of an arc structure can also achieve the above technical effects. Or, the technical effect of the straight corner section 22 of the choke groove in combination with the straight anti-leakage and stability-enhancing cooperative edge 321 is better.

[0053] However, in actual production and processing, the choke groove 2 is formed on the door body 1 through the stamping process. If the corner section 22 of the choke groove is designed as a straight structure, a more complex stamping process is required, which involves the complexity of the die, related material handling problems, and the addition of heat treatment processes, resulting in higher processing difficulty and increased production and processing costs. In addition, designing the corner section 22 of the choke groove as a straight structure will cause the stress at the corresponding corner section 22 of the door body 1 to be concentrated, which is not conducive to the structural strength stability.

[0054] On the contrary, compared with the arc-type processing, setting the choke corner edge 32 to include two straight anti-leakage stable phase cooperative edges 321 has relatively low processing difficulty. Therefore, it can not only effectively reduce the amount of microwave leakage, but also reduce the processing difficulty of the choke plate 3.

[0055] Implementation Case 1:

[0056] A door assembly, referring to Figure 3 In this embodiment, the choke corner edge 32 includes two anti-leakage stable phase cooperative edges 321 and a choke corner residual edge 322, wherein the two anti-leakage stable phase cooperative edges 321 are straight lines and have an angle with each other, and each anti-leakage stable phase cooperative edge 321 and the two adjacent choke straight lines 31 have an angle, and the choke corner residual edge 322 is any line type, such as a straight line, an arc, a curve, etc.

[0057] For the choke corner residual edge 322, the two ends are respectively connected to two anti-leakage stable phase cooperative edges 321, or / and, the anti-leakage stable phase cooperative edge 321 and the choke straight line edge 31, that is, the two anti-leakage stable phase cooperative edges 321 and the anti-leakage stable phase cooperative edge 321 and the choke straight line edge 31 can be connected by the choke corner residual edge 322, or they can be directly connected. Figure 3 The choke corner margins 322 shown are set to three, which are respectively located between the two anti-leakage stable phase cooperative edges 321, and between each anti-leakage stable phase cooperative edge 321 and the corresponding choke straight edge 31. In addition, there are many different arrangements in which the choke corner margins 322 are set to one or two.

[0058] In this embodiment, the two anti-leakage stabilizing phase cooperative edges 321 are symmetrically arranged about the midline of the choke corner edge 32, and the angle between the anti-leakage stabilizing phase cooperative edge 321 and its corresponding choke straight line edge 31 is an obtuse angle, and the angle between the two anti-leakage stabilizing phase cooperative edges 321 is an obtuse angle.

[0059] In this embodiment, the anti-leakage and phase-stabilizing cooperative edge 321 plays the role of restoring impedance continuity to stabilize the phase, homogenizing the electric field distribution, and correcting the reflection path, thereby reducing the leakage of microwaves. The choke corner residual edge 322 serves as a modified edge outside the anti-leakage and phase-stabilizing cooperative edge 321, making the choke corner edge 32 complete in line.

[0060] Implementation Case 2:

[0061] A door assembly, referring to Figure 4, in this embodiment, the choke turning edge 32 is only provided with two straight anti-leakage and stability-phase synergistic edges 321 that form an angle with each other, that is, one end of the two anti-leakage and stability-phase synergistic edges 321 is connected, and the other ends of the two anti-leakage and stability-phase synergistic edges 321 are respectively connected to the corresponding choke straight edges 31.

[0062] In this embodiment, the two anti-leakage and stability-phase synergistic edges 321 are symmetrically arranged with respect to the bisector of the choke turning edge 32, and the angle between the anti-leakage and stability-phase synergistic edge 321 and its corresponding choke straight edge 31 is an obtuse angle, and the angle between the two anti-leakage and stability-phase synergistic edges 321 is an obtuse angle.

[0063] Embodiment 3:

[0064] A door assembly, referring to Figure 5 , based on Embodiment 2, in this embodiment, the choke straight edge 31 has a plurality of straight-edge tooth grooves 31a arranged at intervals to form a plurality of straight-edge choke teeth 31b. No tooth grooves are provided on the choke turning edge 32. Therefore, two adjacent straight-edge tooth grooves 31a on the choke straight edge 31 and the choke turning edge 32 form a corner choke tooth 32b.

[0065] The straight-edge choke teeth 31b extend the microwave propagation path through a periodic tooth groove structure, and use the 1 / 4 wavelength resonance principle to generate multiple reflected wave superpositions, forming impedance mutation points on the straight edge to reflect the leakage energy. At the same time, the electric field gradient distribution between adjacent tooth grooves can suppress the propagation of transverse surface waves.

[0066] In this embodiment, since no tooth grooves are provided on the choke turning edge 32, the adjacent straight-segment tooth grooves naturally extend and converge to form a corner choke tooth 32b that is wider than the straight-edge choke tooth 31b. The corner choke tooth 32b destroys the phase consistency of the microwave diffraction path, forcing the diffracted waves with different incident angles to generate self-interference cancellation in the corner area.

[0067] Embodiment 4:

[0068] A door assembly, referring to Figure 6 , based on Embodiment 2, in this embodiment, the choke straight edge 31 has a plurality of straight-edge tooth grooves 31a arranged at intervals to form a plurality of straight-edge choke teeth 31b. The choke turning edge 32 has at least one corner-edge tooth groove 32a to form at least two corner choke teeth 32b.

[0069] The difference between this embodiment and Embodiment 3 is that no corner choke teeth 32b are provided on the choke turning edge 32 in Embodiment 3, while in this embodiment, the corner choke teeth 32b are provided with corner-edge tooth grooves 32a.

[0070] In this embodiment, by providing a corner edge groove 32a on the corner edge 32 of the choke to form a corner choke tooth 32b, a single diffraction path is divided into multiple resonant cavities through periodic impedance mutations, forcing the microwave to undergo multiple phase inversions, triggering self-interference cancellation of the diffracted wave. At the same time, the corner edge groove 32a disrupts the continuity of the surface wave propagation, reducing microwave leakage and suppressing the extension of the frequency band to higher frequencies.

[0071] In some embodiments, the corner edge groove 32a is provided as one and is located at the midline of the corner edge 32 of the choke.

[0072] In another embodiment, the corner edge groove 32a is provided as at least two and is arranged at equal intervals on the corner edge 32 of the choke.

[0073] In this embodiment, the groove depth of the corner edge groove 32a is less than that of the straight edge groove 31a. More specifically, the groove body of the corner edge groove 32a is 30%-70% of the groove body of the straight edge groove 31a. It should be noted that the groove depth refers to the length from the groove opening to the groove bottom, that is, referring to Figure 6 , the length of d2 is less than that of d1.

[0074] Embodiment 5:

[0075] A cooking device includes a door body assembly, and the door body assembly is as shown in Embodiments 1-4. Among them, the cooking device includes a steam oven and a microwave oven.

[0076] Experimental case:

[0077] The gaps between the four straight edges of the door body assembly and the inner container of the cooking device are pasted with aluminum foil, leaving only the gaps between the four corner edges of the door body assembly and the inner container. The four corner edges of the door body assembly are respectively marked as the 1st position, the 2nd position, the 3rd position, and the 4th position, corresponding to the arc corners of the choke structure. Then, the microwave leakage amounts at the 1st position, the 2nd position, the 3rd position, and the 4th position are detected. Since the gaps at the straight edges are sealed with aluminum foil, the microwave leakage at the straight edges can be effectively avoided from interfering with the corner edges, ensuring the effectiveness of the detection.

[0078] Embodiments 3 and 4 are respectively detected, and the detection results are as follows:

[0079] Microwave leakage detection result of Embodiment 3:

[0080] The first group of data

[0081]

[0082] The second group of data

[0083]

[0084] The third group of data

[0085]

[0086] It can be seen that the microwave leakage of Implementation Case 3 decreases from the range of 2.5 - 3.3 wm / cm 2 to the range of 0.4 - 1.2 wm / cm 2 .

[0087] The microwave leakage detection results of Implementation Case 4:

[0088] The first group of data

[0089]

[0090] The second group of data

[0091]

[0092] The third group of data

[0093]

[0094] It can be seen that the microwave leakage of Implementation Case 4 decreases from the range of 2.5 - 3.3 wm / cm 2 to the range of 0.4 - 1.2 wm / cm 2 .

[0095] It should be noted that the leakage at positions 3 and 4 is generally higher than that at positions 1 and 2. After research, the applicant found that the reasons for this result are as follows:

[0096] Since the experimental materials are not the final commercialized products, the manufacturing requirements are lower than those for commercialization. Due to different degrees of depressions and protrusions in the door body components, the flatness is not ideal, and there are differences in the hinge force and installation force deviation during assembly. Eventually, the gaps between the door body components and the front plate of the inner tank are different. Coupled with the inconsistent projection lengths of the top edge and bottom edge of the door body component on the front plate of the inner tank, generally, the projection length of the top edge of the door body component on the front plate of the inner tank is greater than that of the bottom edge of the door body component on the front plate of the inner tank. Therefore, the microwave leakage at points 1 and 2 is less than that at points 3 and 4, which is not a defect of the technical solution.

[0097] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than limiting it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A door assembly, applied to a cooking device, characterized in that, It includes a door body (1). On the inner surface of the door body (1), there is a choke groove (2) arranged along its edge and formed by depression. The choke groove (2) has four choke groove straight segments (21). The four choke groove straight segments (21) are linear and any two adjacent choke groove straight segments (21) are perpendicular to each other. Any two adjacent choke groove straight segments (21) are connected by an arc-shaped choke groove corner segment (22). And a choke plate (3). The choke plate (3) is fixed on the inner surface of the door body (1) and is located within the part enclosed by the choke groove (2). There is a gap between the outer periphery of the choke plate (3) and the outer edge of the choke groove (2), so that the choke plate (3) blocks part of the choke groove (2) and forms a choke structure with the choke groove (2). The outer periphery of the choke plate (3) has a choke straight edge (31) corresponding to the choke groove straight segment (21) and being linear, and a choke corner edge (32) corresponding to the choke groove corner segment (22). The choke corner edge (32) includes two linear anti-leakage and stability-phase synergistic edges (321) having an included angle with each other, and each anti-leakage and stability-phase synergistic edge (321) has an included angle with the two adjacent choke straight edges (31).

2. The door body assembly according to claim 1, wherein The choke corner edge (32) further includes a choke corner remaining edge (322) of any linear type.

3. The door body assembly according to claim 2, wherein, The two ends of the choke corner remaining edge (322) are respectively connected to the two anti-leakage and stability-phase synergistic edges (321), or / and, the anti-leakage and stability-phase synergistic edge (321) and the choke straight edge (31).

4. The door body assembly according to claim 1, characterized in that, One ends of the two anti-leakage and stability-phase synergistic edges (321) are connected, and the other ends of the two anti-leakage and stability-phase synergistic edges (321) are respectively connected to the corresponding choke straight edges (31).

5. The door body assembly according to any one of claims 1-4, characterized in that, The two anti-leakage and stability-phase synergistic edges (321) are symmetrically arranged with respect to the bisector of the choke corner edge (32).

6. The door body assembly according to claim 5, wherein The included angle between the anti-leakage and stability-phase synergistic edge (321) and its corresponding choke straight edge (31) is an obtuse angle, and the included angle between the two anti-leakage and stability-phase synergistic edges (321) is an obtuse angle.

7. The door body assembly according to any one of claims 1-4, characterized in that, There are a plurality of linearly spaced straight edge tooth grooves (31a) on the choke straight edge (31) to form a plurality of straight edge choke teeth (31b); and, two straight edge tooth grooves (31a) adjacent to the choke corner edge (32) on the choke straight edge (31) form a corner choke tooth (32b).

8. The door body assembly according to any one of claims 1-4, characterized in that, There are a plurality of linearly spaced straight edge tooth grooves (31a) on the choke straight edge (31) to form a plurality of straight edge choke teeth (31b); there is at least one corner edge tooth groove (32a) on the choke corner edge (32) to form at least two corner choke teeth (32b).

9. The door body assembly according to claim 8, wherein The corner edge tooth groove (32a) is set to be one and located at the bisector of the choke corner edge (32), or, the corner edge tooth groove (32a) is set to be at least two and arranged at equal intervals on the choke corner edge (32).

10. The door body assembly according to claim 8, characterized in that, The groove body depth of the corner edge groove (32a) is less than that of the straight edge groove (31a).

11. A cooking device, characterized in that, Comprising the door body assembly according to any one of claims 1-10.

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