CN220191068U - Microwave cooking apparatus - Google Patents

Abstract

The present application provides a microwave cooking apparatus comprising: the cavity assembly is provided with a cooking cavity and a cavity opening which are communicated with each other; the front plate is fixed on or integrally formed at the edge of the cavity opening, the front plate is provided with an opening communicated with the cavity opening, one side of the front plate, which is opposite to the cavity assembly, is provided with a first choke structure, wherein the first choke structure comprises a first transition part, a first choke groove and choke teeth which are sequentially connected, the first transition part is connected to the edge of the opening, the direction of the notch of the first choke groove is the same as that of the cavity opening, the choke teeth are far away from the edge of the first choke groove and extend towards the direction of the first transition part, the first choke structure is used for shielding microwaves of the cooking cavity, and the weight of the door assembly is reduced by arranging the choke structure on the front plate, so that dislocation phenomenon of the door assembly in a long-term frequent switching process is prevented, and accordingly microwave leakage is relieved.

Description

Microwave cooking apparatus

Technical Field

The application relates to the technical field of microwave cooking equipment, in particular to microwave cooking equipment.

Background

The microwave cooking device is a cooking device for heating food by microwaves, in order to prevent microwave leakage, a microwave choke structure is generally required to be arranged, and the existing microwave cooking device is provided with all microwave choke structures arranged on a door body assembly, so that the weight of the door body assembly is increased, the door body assembly can be caused to generate dislocation in a long-term frequent switching process, and accordingly microwave leakage is caused, and therefore, how to provide the microwave cooking device for relieving the microwave leakage is a technical problem to be solved in the current field.

Disclosure of Invention

The utility model provides microwave cooking equipment, which aims to solve the technical problem of microwave leakage of the microwave cooking equipment in the prior art.

In order to solve the technical problems, the technical scheme adopted by the utility model is as follows: a microwave cooking apparatus, the microwave cooking apparatus comprising: the cavity assembly is provided with a cooking cavity and a cavity opening which are communicated with each other; the front plate is fixed on or integrally formed with the edge of the cavity opening, the front plate is provided with an opening communicated with the cavity opening, one side of the front plate, which is away from the cavity assembly, is provided with a first choke structure, wherein the first choke structure comprises a first transition part, a first choke groove and choke teeth which are sequentially connected, the first transition part is connected with the edge of the opening, the direction of the notch of the first choke groove is the same as the direction of the cavity opening, and the choke teeth extend from the edge of the first choke groove away from the first transition part to the direction of the first transition part.

Wherein the first transition is disposed around a periphery of the opening.

The length L of the first transition part is the distance between the edge of the first transition part connected with the cavity opening and the edge of the first transition part connected with the first choke groove, and the length L of the first transition part is more than or equal to 5mm.

The first choke groove comprises a first wall, a third wall and a second wall which are sequentially connected, the second wall is opposite to the first wall, the first wall is connected with the first transition part, and the second wall is connected with the choke teeth.

Wherein the length D1 of the first wall is a distance between an edge of the first wall connected to the first transition portion and an edge of the first wall connected to the third wall, the length D2 of the third wall is a distance between an edge of the third wall connected to the first wall and an edge of the third wall connected to the second wall, the length D3 of the second wall is a distance between an edge of the second wall connected to the third wall and an edge of the second wall connected to the choke teeth, the length D4 of the choke teeth is a distance between an edge of the choke teeth connected to the second wall and a free end of the choke teeth, and a sum of microwave wavelengths of the cooking cavity is P, D1, D2, D3, and D4 is greater than or equal to 0.8P and less than or equal to 1.2P.

Wherein the choke teeth are spaced from the first wall.

The choke teeth are provided with first gaps, the width M1 of the choke teeth is 10-20 mm, and the width M2 of the first gaps is 10-20 mm.

The door body assembly can be opened and closed and is covered with the cavity assembly and the front plate, and the door body assembly comprises: the door body can be opened and closed to cover the cavity opening of the cavity assembly; the apron, be fixed in or integrated into one piece in the edge of the door body main part, and the orientation is kept away from the direction of the door body main part extends, the apron can open and close formula lid and close in the front bezel, the apron includes second choke structure, second choke structure is including the second transition portion that connects gradually, second choke groove and blocking structure, second transition portion connect in the edge of the door body main part, the notch of second choke groove is towards the front bezel, blocking structure by the second choke groove is kept away from the edge of second transition portion orientation second transition portion extends.

The second choke groove comprises a fourth wall and a fifth wall, the fourth wall extends from one end of the second transition part far away from the door body towards the direction far away from the door body, and the fifth wall extends from one end of the fourth wall far away from the second transition part towards the front plate.

The blocking structure comprises a first blocking portion and a second blocking portion, wherein the first blocking portion extends from one end of the fifth wall away from the fourth wall towards the direction of the second transition portion, and the second blocking portion extends from one end of the first blocking portion away from the fifth wall towards the direction of the fourth wall.

Wherein the second blocking portion is spaced apart from the fourth wall.

Wherein, at least part of the notch of the second choke groove is positioned at one side of the notch of the first choke groove away from the cavity opening.

The front plate further comprises a drainage wall, the drainage wall is connected with a first choke structure, the drainage wall extends from the edge of the first choke groove away from the first transition portion towards the direction away from the first transition portion, and the drainage wall can cover at least part of the second choke groove and at least part of the blocking structure.

Compared with the prior art, the beneficial effects of the embodiment of the application are as follows: the embodiment of the application provides microwave cooking equipment, which comprises a cavity component and a front plate, wherein the cavity component is provided with a cooking cavity and a cavity opening which are mutually communicated, the front plate is fixed on or integrally formed at the edge of the cavity opening, the front plate is provided with an opening which is communicated with the cavity opening, one side of the front plate, which is away from the cavity component, is provided with a first choke structure, wherein the first choke structure comprises a first transition part, a first choke groove and choke teeth which are sequentially connected, the first transition part is connected with the edge of the opening, the notch of the first choke groove faces the same as the cavity opening, the choke teeth extend from the edge of the first choke groove, which is far away from the first transition part, towards the first transition part, and the first choke structure is used for shielding microwaves of the cooking cavity.

Drawings

For a clearer description of the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly described below, it will be apparent that the drawings in the description below are only some embodiments of the present application, and other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art, wherein:

fig. 1 is a schematic cross-sectional view of a microwave cooking apparatus according to an embodiment of the present application;

fig. 2 is a schematic perspective view of a microwave cooking apparatus according to an embodiment of the present application after a door assembly is hidden;

FIG. 3 is a front view of a microwave cooking device according to an embodiment of the present application with a door assembly hidden;

FIG. 4 is an enlarged view of B in FIG. 3;

FIG. 5 is an enlarged view of A in FIG. 1;

fig. 6 is an enlarged view of a in fig. 1.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. It is to be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the application. It should be further noted that, for convenience of description, only some, but not all of the structures related to the present application are shown in the drawings. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.

In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more of the described features. In the description of the present application, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically connected, electrically connected or can be communicated with each other; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present application, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the application. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.

The present application provides a microwave cooking apparatus 100. Referring to fig. 1, fig. 1 is a schematic cross-sectional structure of a microwave cooking apparatus according to an embodiment of the application. The microwave cooking apparatus 100 includes a cavity assembly 10, a front plate 20, and a door assembly 30. The cavity assembly 10, the front plate 20 and the door assembly 30 are matched with each other, and the front plate 20 is arranged between the cavity assembly 10 and the door assembly 30. The cavity assembly 10 has a cooking cavity 11 and an orifice 12 in communication with each other. The front plate 20 is secured to or integrally formed with the edge of the mouth 12. The front plate 20 is used to position the door assembly 30 to the chamber assembly 10 so that the door assembly 30 can seal off the chamber orifice 12. The door assembly 30 is disposed on a side of the front plate 20 facing away from the cavity assembly 10. One side of the door assembly 30 is disposed on the front plate 20 and rotatably cooperates with the front plate 20 to cover the cavity 12 and the opening 21 communicating with the cooking cavity 11.

The front plate 20 has an opening 21 communicating with the cavity port 12. The side of the front plate 20 facing away from the chamber assembly 10 has a first choke structure 22. The first choke structure 22 includes a first transition portion 221, a first choke groove 222, and a choke tooth 223 sequentially connected, where the first transition portion 221 is connected to an edge of the opening 21, a notch of the first choke groove 222 faces the same direction as the cavity opening 12, and the choke tooth 223 extends from the edge of the first choke groove 222 away from the first transition portion 221 toward the first transition portion 221. The first choke structure 22 serves to shield microwaves of the cooking cavity 11.

The first choke structure 22 is disposed on the front plate 20 instead of the door body assembly 30, so that the weight of the door body assembly 30 is reduced, dislocation of the door body assembly 30 during long-term frequent opening and closing is prevented, that is, sinking or tilting of the door body assembly 30 relative to the front plate 20 during use is relieved, and microwave leakage is relieved. Meanwhile, the structure of the door assembly 30 is more compact, and the volume ratio of the cooking cavity 11 is improved on the premise of maintaining the same size of the microwave cooking apparatus 100.

During the operation of the microwave cooking apparatus 100, microwaves radiated outward from the cooking cavity 11 enter the first choke groove 222, and the microwaves entering the first choke groove 222 are reflected in the first choke groove 222 a plurality of times and then are emitted out of the first choke groove 222 in a direction opposite to the entering direction, so that the microwaves entering the first choke groove 222 after the microwaves are counteracted, and the effect of shielding the microwaves is achieved.

In some embodiments, the front plate 20 is secured to or integrally formed with the cavity assembly 10. The front plate 20 and the cavity assembly 10 are of an integrally formed structure, so that the structural strength and the precision are ensured, and the microwave leakage is prevented. If the cavity assembly 10 and the front plate 20 are in a fixed connection structure, the cavity assembly 10 and the front plate 20 can be made of the same material, so that the connection strength and compactness are ensured, and the leakage of microwaves from the connection position of the cavity assembly 10 and the front plate 20 is relieved.

The door assembly 30 may be disposed at a side portion of the front plate 20 facing away from the cavity assembly 10, may be disposed at a lower portion of the front plate 20 facing away from the cavity assembly 10, or may be disposed at an upper portion of the front plate 20 facing away from the cavity assembly 10. The manner in which the door assembly 30 is opened with respect to the cavity assembly 10 is not particularly limited. For example, the door body assembly 30 may be a pull-down door body, a side-pull door body, a push-button door body, a pull-up door body, a touch door body, or a remote control door body.

Referring to fig. 2 to 3, fig. 2 is a schematic perspective view illustrating a hidden door assembly of an embodiment of a microwave cooking apparatus according to the present application, and fig. 3 is a front view illustrating a hidden door assembly of an embodiment of a microwave cooking apparatus according to the present application. The first transition 221 is disposed around the periphery of the opening 21. The first transition 221 is located on a side of the front plate 20 facing away from the cavity assembly 10. The length L of the first transition 221 is the distance between the edge of the first transition 221 connected to the mouth 12 and the edge of the first transition 221 connected to the first choke groove 222. The length L of the first transition 221 is 5mm or more. For example, the length L of the first transition 221 may be 5mm, 5.5mm, 6mm, 6.5mm, 7mm, 7.5mm, 8mm, 8.5mm, 9mm, 9.5mm, 10mm, or 11mm. By providing the first transition portion 221, a gap of a stable size can be maintained between the front plate 20 and the door body assembly 30 at the periphery of the opening 21, preventing a microwave diffraction phenomenon caused by an excessively large gap, and thus, microwave leakage can be alleviated to some extent.

The first transition portion 221 is connected to the first choke groove 222 on a side facing away from the opening 21. The length L of the first transition portion 221 is moderate, so that not only can microwave leakage be relieved, but also the position of the first choke groove 222 is closer to the cooking cavity 11, microwave can be quickly shielded at the edge of the cavity opening 12 of the cooking cavity 11, further microwave leakage is prevented, and the reliability of microwave shielding is ensured.

The first transition part 221 may be integrally formed with the front plate 20, so that the first transition part 221 is not required to be fixed with the front plate 20 by other parts, and meanwhile, in the manufacturing process of the microwave cooking apparatus 100, the assembly process is reduced, the working time is saved, and the assembly efficiency is improved. The first transition part 221 and the front plate 20 are integrally formed, so that no section exists between the first transition part 221 and the front plate 20, and the first transition part 221 can be relieved from being deformed or damaged at the joint of the first transition part 221 and the front plate 20 when being subjected to external force, thereby ensuring the structural strength of the first transition part 221 and improving the reliability of products.

The first choke groove 222 is a recess of the front plate 20 facing the door body assembly 30, that is, the first choke groove 222 is concavely disposed on the front plate 20, so that the shielding performance of the first choke groove 222 is not reduced even if the microwave cooking apparatus 100 is used for a long time, not only the long-term performance, the effectiveness and the reliability of the microwave shielding are ensured, but also the space of the front plate 20 facing one side of the door body assembly 30 is not occupied.

Referring to fig. 4 to 5, fig. 4 is an enlarged view of B in fig. 3, and fig. 5 is an enlarged view of a in fig. 1. First choke groove 222 includes a first wall 2221, a third wall 2223, and a second wall 2222 connected in sequence. The second wall 2222 is disposed opposite the first wall 2221. The first wall 2221 connects the first transition 221. The second wall 2222 is connected to the choke teeth 223.

First wall 2221, second wall 2222, and third wall 2223 are inner walls of first choke groove 222. The first wall 2221 is connected to the first transition part 221 on a side away from the opening 21, and extends from the first transition part 221 toward the cavity assembly 10. The first wall 2221 and the second wall 2222 are disposed opposite. Third wall 2223 is located on a side of first wall 2221 and second wall 2222 away from the notch of first choke groove 222, and third wall 2223 is disposed toward the notch of first choke groove 222. The first wall 2221 and the third wall 2223 may have a rounded structure therebetween, so that the first wall 2221 and the third wall 2223 can be smoothly transited by the rounded structure. The second wall 2222 and the third wall 2223 may also have rounded structures therebetween, so that the second wall 2222 and the third wall 2223 can be smoothly transitioned by the rounded structures. First wall 2221, second wall 2222, and third wall 2223 enclose each other to form first choke groove 222.

The first choke groove 222 is integrally formed on the front plate 20, so that no gap exists between the joints of the first wall 2221 and the third wall 2223, no gap exists between the joints of the second wall 2222 and the third wall 2223, no gap exists between the notch edge of the first choke groove 222 and the joint of the front plate 20 and between the notch edge of the first choke groove 222 and the joint of the first transition part 221, and compactness is high, so that leakage of microwaves from the joints of the first wall 2221 and the third wall 2223, between the joints of the second wall 2222 and the third wall 2223, between the notch edge of the first choke groove 222 and the joint of the front plate 20 and between the notch edge of the first choke groove 222 and the joint of the first transition part 221 is avoided, and meanwhile, the number of parts and the assembly procedure are improved, and the production efficiency is improved. The forming mode of the first choke groove 222 integrally formed on the front plate 20 is not particularly limited, for example, the first choke groove 222 can be integrally formed on the front plate 20 through a stamping process or a milling process, the automation degree of the stamping process and the milling process is high, the processing precision is high, the processing quality is stable and reliable, the production efficiency is further improved, and meanwhile, the surface of the first choke groove 222 is smooth, the consistency is good, and the microwave shielding effect is improved.

The choke tooth 223 is located between the first wall 2221 and the second wall 2222, and extends from a side of the second wall 2222 away from the third wall 2223 toward the first wall 2221, a plane on which the side of the choke tooth 223 facing the first choke groove 222 is perpendicular to the plane on which the first wall 2221 is located, and a plane on which the side of the choke tooth 223 facing the first choke groove 222 is perpendicular to the plane on which the second wall 2222 is located, the choke tooth 223 is disposed opposite to the third wall 2223, and a plane on which the side of the choke tooth 223 facing the first choke groove 222 is parallel to the plane on which the third wall 2223 is located. The choke tooth 223 has a free end facing the first wall 2221, and the free end of the choke tooth 223 is not in contact with the first wall 2221, so that microwaves can be conveniently injected into or out of the first choke groove 222.

The first wall 2221 connects the first transition 221. The first wall 2221 extends from a side of the first transition 221 remote from the opening 21 in a direction towards the cavity assembly 10. The second wall 2222 is connected to the choke teeth 223. The choke tooth 223 extends from a side of the second wall 2222 remote from the third wall 2223 in the direction of the first transition 221. The choke teeth 223 are arranged at intervals with the first wall 2221, so that microwaves of the cooking cavity 11 conveniently enter the first choke groove 222, and the microwaves entering the first choke groove 222 can be emitted from a gap between the choke teeth 223 and the first wall 2221 after being reflected for multiple times in the first choke groove 222, so that the emitted microwaves are conveniently counteracted with the microwaves entering the first choke groove 222, and the effect of shielding the microwaves is realized.

In some embodiments, the choke teeth 223 may be integrally formed on the front plate 20, that is, the choke teeth 223 and the front plate 20 are integrally formed, so that the variety of parts and assembly procedures are reduced, the production efficiency is improved, and meanwhile, the structural strength of the choke teeth 223 is ensured, so that the choke teeth 223 are not easy to deform in the long-term frequent use process of the microwave cooking device 100, and the choke teeth 223 are relieved from bending or breaking due to the action of external force, so that the first choke groove 222 can maintain a stable shielding effect. Since the choke teeth 223 are integrally formed on the front plate 20, no gap exists between the choke teeth 223 and the second wall 2222, so that microwaves entering the first choke groove 222 cannot leak from the joint between the choke teeth 223 and the second wall 2222, the microwave shielding effect of the first choke groove 222 is further ensured, in addition, the material cost of the choke teeth 223 is reduced, the weight of the front plate 20 is reduced, the forward tilting of the microwave cooking device 100 due to unbalanced stress caused by the overweight of the front plate 20 is avoided, and the reliability is improved.

The surface of the choke teeth 223 facing one side of the door body assembly 30, the surface of the first transition part 221 facing one side of the door body assembly 30 and the main surface of the front plate 20 facing one side of the door body assembly 30 are all on the same plane, so that the surface of the front plate 20 facing one side of the door body assembly 30 can maintain good consistency, the probability of generating gaps between the door body assembly 30 and the front plate 20 is reduced, the gaps between the door body assembly 30 and the front plate 20 can be kept stable, microwave diffraction phenomenon caused by overlarge gaps is prevented, the probability of microwave leakage is reduced, and microwave leakage is further relieved.

Choke tooth 223 is disposed along an edge of first choke groove 222. The choke teeth 223 have a first gap 223a therebetween. With continued reference to fig. 4, the widths M2 of the first gaps 223a between any of the choke teeth 223 may be equal, and of course, the widths M2 of the first gaps 223a between any of the choke teeth 223 may be unequal. The choke teeth 223 may be periodically disposed at the edge of the first choke groove 222, and of course, the choke teeth 223 may be non-periodically disposed at the edge of the first choke groove 222. The first choke groove 222 and the choke teeth 223 together form a discontinuous microwave shielding structure, and the discontinuous microwave shielding structure can shield microwaves with wider bandwidth, thereby ensuring the microwave shielding effect.

The width M1 of the choke teeth 223 is 10mm-20mm. For example, the width M1 of the choke teeth 223 may be 10mm, 10.5mm, 11mm, 11.5mm, 12mm, 12.5mm, 13mm, 14mm, 15mm, 15.5mm, 16mm, 17mm, 18mm, 19mm, 19.5mm, or 20mm. The width M2 of the first gap 223a is 10mm-20mm. For example, the width M2 of the first gap 223a may be 10mm, 10.5mm, 11mm, 11.5mm, 12mm, 12.5mm, 13mm, 14mm, 15mm, 15.5mm, 16mm, 17mm, 18mm, 19mm, 19.5mm, or 20mm. In some embodiments, the width M1 of the choke tooth 223 and the width M2 of the first gap 223a may be equal, and of course, the width M1 of the choke tooth 223 and the width M2 of the first gap 223a may be unequal, and the width M1 of the choke tooth 223 and the width M2 of the first gap 223a may be arbitrarily selected according to specific implementation conditions, which only needs to ensure that the width M1 of the choke tooth 223 and the width M2 of the first gap 223a are within respective ranges.

Referring to fig. 6, fig. 6 is an enlarged view of fig. 1 a, with continued reference to fig. 5. The length D1 of the first wall 2221 is the distance between the edge of the first wall 2221 connected to the first transition 221 and the edge of the first wall 2221 connected to the third wall 2223. The length D2 of the third wall 2223 is the distance between the edge of the third wall 2223 connected to the first wall 2221 and the edge of the third wall 2223 connected to the second wall 2222. The length D3 of the second wall 2222 is the distance between the edge of the second wall 2222 connected to the third wall 2223 and the edge of the second wall 2222 connected to the choke tooth 223. The length D4 of the choke tooth 223 is the distance between the edge of the choke tooth 223 connected to the second wall 2222 and the free end of the choke tooth 223.

One quarter of the microwave wavelength of the cooking cavity 11 is P. The sum of D1, D2, D3, and D4 is 0.8P or more and 1.2P or less, thereby expanding the bandwidth of microwaves that the first choke groove 222 can shield, enabling the first choke groove 222 to shield most microwaves of the microwave cooking apparatus 100, and ensuring the shielding effect of the first choke groove 222. The microwaves entering the first choke groove 222 are reflected in the first choke groove 222 for a plurality of times and then are emitted out of the first choke groove 222 in the direction opposite to the entering direction, so that the microwaves entering the first choke groove 222 after the microwaves are counteracted, and the effect of shielding the microwaves is achieved.

In some embodiments, the sum of the length D1 of the first wall 2221, the length D2 of the third wall 2223, the length D3 of the second wall 2222, and the length D4 of the choke tooth 223 may be 0.8P, 0.85P, 0.89P, 0.9P, 0.95P, 0.98P, 1P, 1.03P, 1.06P, or 1.2P. In other embodiments, the sum of the length D1 of the first wall 2221, the length D2 of the third wall 2223, the length D3 of the second wall 2222, and the length D4 of the choke tooth 223 is between one fifth and one third of the microwave wavelength of the cooking cavity 11.

In some embodiments, the door assembly 30 may be openably and closably coupled to the cavity assembly 10 and the front plate 20. With continued reference to fig. 1, the door assembly 30 includes a door body 31 and a cover 32. The door body 31 can be opened and closed to cover the cavity opening 12 of the cavity assembly 10. The cover plate 32 is fixed to or integrally formed with an edge of the door body 31, and extends in a direction away from the door body 31, and the cover plate 32 can be opened and closed to cover the front plate 20.

The cover 32 is fixed to or integrally formed with an edge of the door body 31. The cover plate 32 and the door body main body 31 are integrally formed, so that the structural strength and the precision are ensured, and the microwave leakage is prevented. If the cover plate 32 and the door body main body 31 are of a fixed connection structure, the edge of the door body main body 31 can be made of the same material as the cover plate 32, so that the connection strength and compactness are ensured, and the leakage of microwaves from the connection part of the cover plate 32 and the door body main body 31 is relieved.

In some embodiments, the door body 31 further includes a viewing window 34. The observation window 34 is provided in the door body 31, and the observation window 34 corresponds to the opening 21. The viewing window 34 is used to view the cooking condition of the food in the cooking chamber 11. In some embodiments, a metal grid (not shown) is installed in the observation window 34, the metal grid is used for preventing the microwave in the cooking cavity 11 from leaking, and the grid first gap of the metal grid is far smaller than the wavelength of the microwave in the cooking cavity 11, so that when the microwave in the cooking cavity 11 is incident on the metal grid, most of the microwave is emitted, thereby playing a role of shielding the microwave, so that the microwave is difficult to emit from the cooking cavity 11 through the observation window 34. By arranging the metal mesh in the observation window 34, not only the cooking condition of food in the cooking cavity 11 can be observed through the observation window 34, but also microwave leakage can be prevented.

With continued reference to fig. 3, the door body 31 further includes a convex hull structure 35. The convex hull structure 35 is disposed on a side of the door body 31 facing the cavity assembly 10, and is disposed around a peripheral side of the viewing window 34. The convex hull structure 35 can be integrally formed with the door body main body 31, so that the convex hull structure 35 is not required to be fixed with the door body main body 31 by other parts, meanwhile, in the manufacturing process of the microwave cooking equipment 100, the assembling procedure is reduced, the working time is saved, and the assembling efficiency is improved. The convex hull structure 35 and the door body main body 31 are integrally formed, so that a section does not exist between the convex hull structure 35 and the door body main body 31, deformation or damage of the joint of the edge convex hull structure 35 and the door body main body 31 can be relieved when the edge convex hull structure 35 is subjected to external force, the structural strength of the convex hull structure 35 is guaranteed, the reliability of a product is improved, meanwhile, the weight of the door body assembly 30 is also reduced, dislocation of the door body assembly 30 in a long-term frequent opening and closing process due to overweight of the convex hull structure 35 is prevented, namely the door body assembly 30 is prevented from sinking or tilting relative to the front plate 20, and microwave leakage is further relieved.

When the door body assembly 30 is in a closed state relative to the cavity assembly 10, at least part of the convex hull structure 35 is arranged opposite to the first transition part 221 of the front plate 20, that is, the surface of the convex hull structure 35 facing the front plate 20 is at least partially parallel to the surface of the first transition part 221 facing the door body assembly 30, so that a gap with a stable size can be kept between the convex hull structure 35 and the first transition part 221, a microwave diffraction phenomenon caused by overlarge gap is prevented, and microwave leakage can be relieved to a certain extent.

In some embodiments, a seal (not shown) may be provided at the surface of the convex hull structure 35 facing the first transition 221. The sealing element can be selected from silica gel or rubber, and has certain softness so as to ensure sealing effect. The seal is able to absorb part of the microwaves and thereby prevent the risk of excessive microwave concentration between the convex hull structure 35 and the first transition 221, causing ignition or overheating. In addition, by providing the sealing member on the surface of the convex hull structure 35 facing the first transition portion 221, the collision between the front plate 20 and the door body assembly 30 can be effectively buffered for a long time, so that the probability of generating a gap between the front plate 20 and the door body assembly 30 is reduced, and the probability of microwave leakage is further reduced.

When the door body assembly 30 is in a closed state relative to the cavity assembly 10, the convex hull structure 35 and the choke teeth 223 are arranged at intervals, so that the risk of ignition or discharge caused by contact of the convex hull structure 35 and the choke teeth 223 is avoided, the structure is reliable, and the safety is ensured.

The cover plate 32 can be opened and closed to the front plate 20. The cover plate 32 includes a second choke structure 33. The second choke structure 33 serves to shield microwaves of the cooking cavity 11. Through setting up first choke structure 22 at front bezel 20, set up second choke structure 33 simultaneously at door body subassembly 30, formed double choke structure, set up twice shielding structure for the microwave by cooking cavity 11 outside radiation, under the combined action of first choke structure 22 and second choke structure 33, can carry out twice shielding effect to the microwave for the microwave is attenuation constantly, has improved the microwave shielding effect, has reduced the risk that the microwave revealed.

During operation of the microwave cooking apparatus 100, microwaves radiated outward from the cooking cavity 11 first pass through the gap between the first transition portion 221 of the first choke groove 222 and the convex hull structure 35, and since the convex hull structure 35 is provided with the sealing member, the sealing member can absorb microwaves, so that part of microwaves are absorbed by the sealing member between the convex hull structure 35 and the first transition portion 221, the remaining microwaves continue to radiate outward, and part of microwaves enter the first choke groove 222, the microwaves entering the first choke groove 222 exit the first choke groove 222 in the direction opposite to the entering direction after being reflected for a plurality of times in the first choke groove 222, so that the microwaves entering the first choke groove 222 after being cancelled out, the microwaves not entering the first choke groove 222 continue to radiate outward and then enter the second choke structure 33 on the door assembly 30, and the microwaves entering the second choke structure 33 exit the second choke structure 33 in the direction opposite to the entering direction after being reflected for a plurality of times in the second choke structure 33, so that the microwaves entering the second choke structure 33 after being cancelled out.

By providing the sealing member, the first choke structure 22 and the second choke structure 33, the microwaves are absorbed once and shielded twice, so that the microwaves are continuously attenuated, the microwave shielding effect is improved, and the risk of microwave leakage is reduced. When microwaves radiated outwards from the cooking cavity 11 pass through the first choke structure 22 first and pass through the gap between the convex hull structure 35 and the first transition part 221, part of the microwaves are absorbed by the sealing element, the unabsorbed microwaves pass through the first choke groove 222, part of the microwaves enter the first choke groove 222 when passing through the first choke groove 222, the first choke groove 222 can guide the microwaves to reflect so as to shield the microwaves, the microwaves which do not enter the first choke groove 222 continue to radiate towards the second choke structure 33, the second choke structure 33 can guide the microwaves to reflect so as to play a secondary shielding role, and the sealing element, the first choke structure 22 and the second choke structure 33 absorb the microwaves twice, so that the shielding effect of the microwaves is improved, the problem of exceeding standard of microwave leakage can be effectively solved, and the harm of the microwave leakage to users can be effectively relieved.

The second choke structure 33 includes a second transition portion 331, a second choke groove 332, and a blocking structure 333 connected in this order. The second transition portion 331 is connected to an edge of the door body 31. The notch of the second choke groove 332 faces the front plate 20, so that microwaves are conveniently injected into the second choke groove 332. The blocking structure 333 extends from the edge of the second choke groove 332 away from the second transition portion 331 toward the second transition portion 331. The second transition 331 may be part of the convex hull structure 35, or the second transition 331 may be connected to a side of the convex hull structure 35 remote from the viewing window 34. The second choke groove 332 is located at a side of the second transition portion 331 remote from the observation window 34.

A blocking structure 333 is provided along an edge of second choke groove 332. A second gap (not shown) is provided between adjacent barrier structures 333. The width of the blocking structure 333 is the distance from the edge of the second gap on the adjacent side of the blocking structure 333 to the edge of the second gap on the adjacent other side. The width of the second gap is the distance between adjacent blocking structures 333. The widths of the second gaps between any of the blocking structures 333 may be equal, and of course, the widths of the second gaps between any of the blocking structures 333 may be unequal. The blocking structure 333 may be periodically disposed at an edge of the second choke groove 332, and of course, the blocking structure 333 may be non-periodically disposed at an edge of the second choke groove 332. The second transition portion 331, the second choke groove 332, and the blocking structure 333 together form a discontinuous microwave shielding structure, and a broad band of microwaves shielded by the discontinuous microwave shielding structure is wider, thereby ensuring a microwave shielding effect.

The width of the blocking structure 333 is 10mm-20mm. For example, the width M1 of the barrier structure 333 may be 10mm, 10.5mm, 11mm, 11.5mm, 12mm, 12.5mm, 13mm, 14mm, 15mm, 15.5mm, 16mm, 17mm, 18mm, 19mm, 19.5mm, or 20mm. The width M2 of the first gap 223a is 10mm-20mm. For example, the width M2 of the first gap 223a may be 10mm, 10.5mm, 11mm, 11.5mm, 12mm, 12.5mm, 13mm, 14mm, 15mm, 15.5mm, 16mm, 17mm, 18mm, 19mm, 19.5mm, or 20mm. In some embodiments, the width of the blocking structure 333 and the width of the second gap may be equal, and of course, the width of the blocking structure 333 and the width of the second gap may be unequal, and the width of the blocking structure 333 and the width of the second gap may be arbitrarily selected according to specific implementation conditions, which only needs to ensure that the width of the blocking structure 333 and the width of the second gap are within respective ranges.

Second choke groove 332 includes a fourth wall 3321 and a fifth wall 3322. The fourth wall 3321 extends from one end of the second transition portion 331 away from the door body 31 toward a direction away from the door body 31. The fifth wall 3322 extends from an end of the fourth wall 3321 remote from the second transition portion 331 toward the front plate 20. The blocking structure 333 includes a first blocking portion 3331 and a second blocking portion 3332. The first blocking portion 3331 extends from an end of the fifth wall 3322 away from the fourth wall 3321 toward the second transition portion 331. The second blocking portion 3332 extends from an end of the first blocking portion 3331 away from the fifth wall 3322 toward the fourth wall 3321. It is understood that the second transition portion 331, the fourth wall 3321, the fifth wall 3322, the first blocking portion 3331, and the second blocking portion 3332 are sequentially connected.

The second blocking portion 3332 is spaced apart from the fourth wall 3321 so that microwaves can be injected into the surrounding spaces of the fourth wall 3321, the fifth wall 3322, the first blocking portion 3331 and the second blocking portion 3332 to enable the second choke structure 33 to perform a microwave shielding effect.

With continued reference to fig. 6, the junction between the second transition portion 331 and the door body 31 has a point a, the junction between the second transition portion 331 and the fourth wall 3321 has a point B, and the points a and B are located on the same cross section. The second transition 331 has a length AB that is the distance from point a along the second transition 331 to point B. The length D5 of the fourth wall 3321 is the distance between the edge of the fourth wall 3321 connected to the second transition 331 and the edge of the fourth wall 3321 connected to the fifth wall 3322. The length D6 of the fifth wall 3322 is the distance between the edge of the fifth wall 3322 connected to the fourth wall 3321 and the edge of the fifth wall 3322 connected to the first blocking portion 3331. The length D7 of the first blocking portion 3331 is a distance between an edge of the first blocking portion 3331 connected to the fifth wall 3322 and an edge of the first blocking portion 3331 connected to the second blocking portion 3332. The length D8 of the second blocking portion 3332 is a distance between an edge of the second blocking portion 3332 connected to the first blocking portion 3331 and a free end of the second blocking portion 3332.

One quarter of the microwave wavelength of the cooking cavity 11 is P. AB. The sum of D5, D6, D7, and D8 is 0.8P or more and 1.2P or less, thereby expanding the bandwidth of microwaves that the second choke structure 33 can shield, enabling the second choke structure 33 to shield most of microwaves of the microwave cooking apparatus 100, and ensuring the shielding effect of the second choke structure 33. The microwaves entering the second choke structure 33 are reflected in the second choke structure 33 for a plurality of times and then exit the second choke structure 33 in the direction opposite to the entering direction, so that the microwaves entering the second choke structure 33 after the microwaves are counteracted, and the effect of shielding the microwaves is realized.

In some embodiments, the sum of the length AB of the second transition 331, the length D5 of the fourth wall 3321, the length D6 of the fifth wall 3322, the length D7 of the first barrier 3331, and the length D8 of the second barrier 3332 may be 0.8P, 0.85P, 0.89P, 0.9P, 0.95P, 0.98P, 1P, 1.03P, 1.06P, or 1.2P. In other embodiments, the sum of the length AB of the second transition 331, the length D5 of the fourth wall 3321, the length D6 of the fifth wall 3322, the length D7 of the first blocking portion 3331, and the length D8 of the second blocking portion 3332 is between one fifth and one third of the microwave wavelength of the cooking cavity 11.

When the door assembly 30 is in a closed state relative to the cavity assembly 10, at least part of the notch of the second choke groove 332 is located at a side of the notch of the first choke groove 222 away from the cavity opening 12, so that microwaves radiated outwards from the cooking cavity 11 pass through the first choke groove 222 and the second choke groove 332 in sequence, thereby further improving the microwave shielding effect.

The front plate 20 further comprises a drainage wall 23, the drainage wall 23 being connected to the first choke structure 22. The drain wall 23 extends from the edge of the first choke groove 222 away from the first transition portion 221 towards a direction away from the first transition portion 221, and the drain wall 23 covers at least part of the second choke groove 332 and at least part of the blocking structure 333. When the door assembly 30 is in a closed state relative to the cavity assembly 10, the drainage wall 23 is disposed opposite to the cover plate 32 of the door assembly 30, and the drainage wall 23 may cover at least a portion of the second choke groove 332, so that microwaves can enter the second choke groove 332 from the notch of the second choke groove 332 without directly diffusing outwards, thereby ensuring the microwave shielding effect of the microwave cooking apparatus 100. The drain wall 23 may cover at least part of the blocking structure 333 such that microwaves not shielded by the first and second choke structures 22, 333 are further attenuated between the drain wall 23 and the blocking structure 333, thereby further mitigating microwave leakage.

In some embodiments, the side of the drain wall 23 facing the door assembly 30 and/or the side of the blocking structure 333 facing the front panel 20 is provided with a seal (not shown in the figures). The sealing element can be selected from silica gel or rubber, and has certain softness so as to ensure sealing effect. The seal is capable of absorbing a portion of the microwaves, thereby mitigating the outdiffusion of the microwaves through the gap between the drainage wall 23 and the blocking structure 333, such that the microwaves are further attenuated. In addition, by providing a sealing member on the side of the drainage wall 23 facing the door body assembly 30 and/or the side of the blocking structure 333 facing the front plate 20, the collision between the front plate 20 and the door body assembly 30 can be effectively buffered for a long time, thereby reducing the probability of generating a gap between the front plate 20 and the door body assembly 30, and further reducing the probability of microwave leakage.

The present application provides a microwave cooking apparatus comprising: the cavity assembly is provided with a cooking cavity and a cavity opening which are communicated with each other; the front plate is fixed on or integrally formed at the edge of the cavity opening, the front plate is provided with an opening communicated with the cavity opening, one side of the front plate, which is opposite to the cavity assembly, is provided with a first choke structure, wherein the first choke structure comprises a first transition part, a first choke groove and choke teeth which are sequentially connected, the first transition part is connected to the edge of the opening, the direction of the notch of the first choke groove is the same as that of the cavity opening, the choke teeth are far away from the edge of the first choke groove and extend towards the direction of the first transition part, the first choke structure is used for shielding microwaves of the cooking cavity, and the weight of the door assembly is reduced by arranging the choke structure on the front plate, so that dislocation phenomenon of the door assembly in a long-term frequent switching process is prevented, and accordingly microwave leakage is relieved.

The foregoing description is only of embodiments of the present application, and is not intended to limit the scope of the application, and all equivalent structures or equivalent processes using the descriptions and the drawings of the present application or directly or indirectly applied to other related technical fields are included in the scope of the application.

Claims (13)

1. A microwave cooking apparatus, the microwave cooking apparatus comprising:

the cavity assembly is provided with a cooking cavity and a cavity opening which are communicated with each other;

the front plate is fixed on or integrally formed with the edge of the cavity opening, the front plate is provided with an opening communicated with the cavity opening, one side of the front plate, which is away from the cavity assembly, is provided with a first choke structure, wherein the first choke structure comprises a first transition part, a first choke groove and choke teeth which are sequentially connected, the first transition part is connected with the edge of the opening, the direction of the notch of the first choke groove is the same as the direction of the cavity opening, and the choke teeth extend from the edge of the first choke groove away from the first transition part to the direction of the first transition part.

2. A microwave cooking apparatus according to claim 1, wherein the first transition is disposed around a periphery of the opening.

3. The microwave cooking apparatus of claim 1, wherein a length L of the first transition portion is a distance between an edge of the first transition portion connected to the cavity opening and an edge of the first transition portion connected to the first choke groove, the length L of the first transition portion being 5mm or more.

4. The microwave cooking apparatus of claim 1 wherein the first choke groove comprises a first wall, a third wall, and a second wall connected in sequence, the second wall and the first wall being disposed opposite, the first wall connecting the first transition portion, the second wall connecting the choke teeth.

5. The microwave cooking apparatus of claim 4, wherein a length D1 of the first wall is a distance between an edge of the first wall connected to the first transition and an edge of the first wall connected to the third wall, a length D2 of the third wall is a distance between an edge of the third wall connected to the first wall and an edge of the third wall connected to the second wall, a length D3 of the second wall is a distance between an edge of the second wall connected to the third wall and an edge of the second wall connected to the choke tooth, a length D4 of the choke tooth is a distance between an edge of the choke tooth connected to the second wall and a free end of the choke tooth, and a sum of microwave wavelengths of the cooking cavity is P, D1, D2, D3, and D4 is equal to or greater than 0.8P and equal to or less than 1.2P.

6. The microwave cooking apparatus of claim 4 wherein the choke teeth are spaced apart from the first wall.

7. The microwave cooking apparatus of claim 4 wherein the choke teeth have a first gap therebetween, the choke teeth having a width M1 of 10mm-20mm and the first gap having a width M2 of 10mm-20mm.

8. The microwave cooking apparatus of any one of claims 1-7, further comprising a door assembly that is openably closable over the cavity assembly and the front plate, the door assembly comprising:

the door body can be opened and closed to cover the cavity opening of the cavity assembly;

the apron, be fixed in or integrated into one piece in the edge of the door body main part, and the orientation is kept away from the direction of the door body main part extends, the apron can open and close formula lid and close in the front bezel, the apron includes second choke structure, second choke structure is including the second transition portion that connects gradually, second choke groove and blocking structure, second transition portion connect in the edge of the door body main part, the notch of second choke groove is towards the front bezel, blocking structure by the second choke groove is kept away from the edge of second transition portion orientation second transition portion extends.

9. The microwave cooking apparatus of claim 8 wherein the second choke groove includes a fourth wall extending from an end of the second transition portion away from the door body toward a direction away from the door body, and a fifth wall extending from an end of the fourth wall away from the second transition portion toward the front plate.

10. A microwave cooking apparatus according to claim 9, wherein the blocking structure comprises a first blocking portion extending from an end of the fifth wall remote from the fourth wall in a direction towards the second transition portion and a second blocking portion extending from an end of the first blocking portion remote from the fifth wall in a direction towards the fourth wall.

11. A microwave cooking apparatus according to claim 10, wherein the second barrier is spaced from the fourth wall.

12. The microwave cooking apparatus of claim 8, wherein a notch of at least a portion of the second choke groove is located on a side of the notch of the first choke groove remote from the cavity opening.

13. The microwave cooking apparatus of claim 12 wherein the front plate further comprises a drainage wall connecting a first choke structure, the drainage wall extending from an edge of the first choke groove away from the first transition portion toward a direction away from the first transition portion, the drainage wall being foldable over at least a portion of the second choke groove and at least a portion of the blocking structure.