Microwave cooking utensil

Abstract

The utility model relates to the technical field of household appliances, and provides a microwave cooking utensil which comprises a cooking main body and a cover body, the cooking main body comprises a microwave shielding case, and the microwave shielding case is provided with an opening; the cover body comprises a microwave shielding cover plate, the cover body is arranged at the opening of the microwave shielding case in an openable and closable manner, when the cover body is in an open state, the opening of the microwave shielding case is open, and when the cover body is in a closed state, the microwave shielding cover plate shields the opening and encloses the microwave shielding cover plate and the microwave shielding case to form a cooking shielding cavity; the microwave shielding cover comprises a cover main body and a cover edge part which are connected with each other, an opening of the microwave shielding cover is defined by the cover edge part, the cover edge part is provided with one of an annular groove and an annular bulge which are arranged along the circumferential direction of the opening, the microwave shielding cover plate is provided with the other one, and in a covering state, the annular bulge is in concave-convex fit with the annular groove. According to the microwave cooking utensil, through cooperation of the annular protrusion and the annular groove, the bounce amount of the cover body and the cooking main body is compensated, microwave leakage is effectively prevented, and the safety of the cooking utensil is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of household appliances, in particular to a microwave cooking appliance. Background Art

[0002] With the continuous progress of technology, intelligent cooking appliances have become a development trend. Products such as intelligent rice cookers and intelligent cookware have entered thousands of households, bringing great convenience to people's cooking lives. Related microwave cooking appliances can use the principle of microwave penetration heating for heating. Microwaves can uniformly penetrate water and food materials, achieving the effect of rapid and uniform temperature rise during the entire cooking process, greatly improving the cooking efficiency and uniformity. However, there are gaps in the closing of the current microwave cooking appliances, and the shielding cavity cannot be completely closed. Such gaps pose a safety hazard of microwave leakage, and microwave leakage also affects the normal heating effect of the microwave cooking appliance on food materials. Summary of the Utility Model

[0003] This application aims to solve at least one of the technical problems existing in the related art. For this purpose, this application proposes a microwave cooking appliance. By the cooperation of an annular protrusion and an annular groove, the bounce amount of the cover body and the cooking main body is compensated, so that the cooking shielding cavity remains in a relatively closed state, solving the defect that microwave leakage is caused by the gap in the closing of the existing microwave cooking appliances.

[0004] The microwave cooking appliance proposed according to the embodiments of this application includes:

[0005] A cooking main body, including a microwave shielding cover, and the microwave shielding cover has an opening;

[0006] A cover body, including a microwave shielding cover plate, and the cover body is disposed at the opening of the microwave shielding cover in an openable and closable manner. When the cover body is in the open state, the opening of the microwave shielding cover is open. When the cover body is in the closed state, the microwave shielding cover shields the opening, and the two enclose a cooking shielding cavity;

[0007] The microwave shielding cover includes a cover main body and a cover edge portion connected to each other. The cover edge portion surrounds the opening of the microwave shielding cover. The cover edge portion is provided with one of an annular groove and an annular protrusion arranged along the circumference of the opening. The microwave shielding cover plate is provided with the other of the annular protrusion and the annular groove. In the closed state, the annular protrusion cooperates with the annular groove.

[0008] According to the microwave cooking appliance of the embodiment of the present application, by the cooperation of the annular protrusion and the annular groove, the amount of bounce of the cover body and the cooking main body is compensated. As long as the amount of bounce of the cover body relative to the cooking main body is less than the height of the protrusion of the annular protrusion, at least a part of the annular protrusion will be located in the annular groove, so that there is at least microwave shielding in the extension direction of the opening, keeping the cooking shielding cavity in a relatively closed state, effectively preventing microwave leakage, improving the safety of the cooking appliance, and enhancing the shielding effect. Here, the extension direction of the opening refers to the direction perpendicular to the depth of the cooking shielding cavity and located on the plane where the opening belongs.

[0009] According to an embodiment of the present application, the cover edge portion includes a first cover edge ring and a second cover edge ring connected to each other. The second cover edge ring surrounds the outer periphery of the first cover edge ring, and the second cover edge ring is farther from the cover main body than the first cover edge ring.

[0010] The first cover edge ring is recessed relative to the second cover edge ring along the cover closing direction of the cover body to form the annular groove.

[0011] Alternatively, the first cover edge ring protrudes relative to the second cover edge ring along the cover closing direction of the cover body to form the annular protrusion.

[0012] According to an embodiment of the present application, the height difference between the first cover edge ring and the second cover edge ring is 0.1 mm - 1 mm.

[0013] According to an embodiment of the present application, the first cover edge ring is the inner edge portion of the cover edge portion close to the cover main body.

[0014] According to an embodiment of the present application, when the cover body is in the closed state, the fitting depth between the annular protrusion and the annular groove is the fitting amount. The cover body is provided with a hinged side and a free side. The hinged side of the cover body is hinged to the cooking main body, and the free side and the hinged side are respectively located at opposite ends of the cover body. Along the direction from the hinged side towards the free side, the fitting amount increases.

[0015] According to an embodiment of the present application, the cover edge portion is provided with a plurality of the annular grooves. The plurality of annular grooves are spaced along the direction of the cover edge portion from the inner edge close to the cover main body to the outer edge far from the cover main body. The microwave shielding cover plate is provided with a plurality of the annular protrusions, and the annular grooves and the annular protrusions correspond one by one.

[0016] Alternatively, the cover edge portion is provided with a plurality of annular protrusions. The plurality of annular protrusions are spaced along the direction of the cover edge portion from the inner edge close to the cover main body to the outer edge far from the cover main body. The microwave shielding cover plate is provided with a plurality of annular grooves, and the annular grooves and the annular protrusions correspond one by one.

[0017] According to an embodiment of the present application, the cover body further includes a cover body housing, the microwave shielding cover plate is disposed inside the cover body housing, the cooking main body is provided with a first clamping structure, the cover body housing is provided with a second clamping structure, in the closed state, the first clamping structure is clamped to the second clamping structure, the cover body has a hinged side and a free side, the hinged side and the free side are opposite to each other, the second clamping structure is disposed on the free side, and the hinged side of the cover body is hinged to the cooking main body.

[0018] According to an embodiment of the present application, the microwave shielding cover plate is a metal cover plate, and the microwave shielding cover is a metal microwave shielding cover.

[0019] According to an embodiment of the present application, the cooking main body includes a microwave generating device and a waveguide structure, the microwave generating device is used to generate electromagnetic waves, and the waveguide structure is connected to the cover main body and is used to introduce the electromagnetic waves into the cooking shielding cavity.

[0020] According to an embodiment of the present application, the cooking main body includes an inner container, the inner container is disposed in the cooking shielding cavity, and an opening of the cooking shielding cavity is formed at the top.

[0021] Additional aspects and advantages of the present application will be given in part in the following description, become apparent in part from the following description, or be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present application or in the related art, the following will briefly introduce the drawings required for use in the description of the embodiments or the related art. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0023] Figure 1 It is a schematic structural diagram of a microwave cooking appliance provided by an embodiment of the present application.

[0024] Figure 2 It is a schematic cross-sectional structural diagram of a microwave cooking appliance provided by an embodiment of the present application.

[0025] Figure 3 It is a schematic structural diagram of a microwave shielding cover and a microwave shielding cover plate provided by an embodiment of the present application.

[0026] Figure 4 is Figure 3 A partial enlarged structural diagram of part A provided by the embodiment.

[0027] Reference numerals:

[0028] 100, Cooking main body; 110, Microwave shielding cover; 111, Cover main body; 112, Cover edge part; 113, Annular groove; 114, First clamping structure; 115, First cover edge ring; 116, Second cover edge ring; 120, Cooking shielding cavity; 130, Inner container;

[0029] 200, Cover body; 210, Microwave shielding cover plate; 211, Annular protrusion; 220, Cover body housing; 221, Second clamping structure;

[0030] 300, Microwave generating device;

[0031] 400, Waveguide structure. Specific embodiments

[0032] The following further describes the embodiments of the present application in detail with reference to the drawings and examples. The following examples are used to illustrate the present application, but cannot be used to limit the scope of the present application.

[0033] In the description of the embodiments of the present application, it should be noted that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the embodiments of the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the embodiments of the present application. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0034] In the description of the embodiments of the present application, it should be noted that unless otherwise clearly specified and limited, the terms "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, which can include an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific situations.

[0035] In the embodiments of the present application, unless otherwise clearly specified and limited, the first feature being "on" or "under" the second feature may mean that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may mean that the first feature is directly above or obliquely above the second feature, or merely means that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "beneath" and "underneath" the second feature may mean that the first feature is directly below or obliquely below the second feature, or merely means that the horizontal height of the first feature is lower than that of the second feature.

[0036] In the description of this specification, the description referring to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the embodiments of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0037] A microwave cooking appliance can utilize the principle of microwave penetration heating to directly heat water, achieving the effect of rapid and uniform temperature rise. However, a microwave cooking appliance has relatively high requirements for the closure of the shielding cavity. If there are gaps, it is easy for microwaves to leak from the gaps to the outside, posing a safety hazard. In a microwave cooking appliance in the related art, the lid and the cooking main body are hinged. When the lid is in the closed state, the hinge spring will exert a resilient force on the lid, and this force will increase the gap between the lid and the cooking main body, causing a gap in the cooking shielding cavity.

[0038] The following will be combined with Figures 1 to 4 to describe the microwave cooking appliance of the present utility model.

[0039] An embodiment of the present application provides a microwave cooking appliance. Please refer to Figures 1 to 4, including a cooking main body 100 and a cover body 200. The cooking main body 100 includes a microwave shielding cover 110 which has an opening; the cover body 200 includes a microwave shielding cover plate 210. The cover body 200 is disposed at the opening of the microwave shielding cover 110 in a manner that it can be opened and closed. When the cover body 200 is in the open state, the opening of the microwave shielding cover 110 is open. When the cover body 200 is in the closed state, the microwave shielding cover plate 210 shields the opening, and the two enclose a cooking shielding cavity 120. The microwave shielding cover 110 includes a cover main body 111 and a cover edge portion 112 which are connected to each other. The cover edge portion 112 surrounds the opening of the microwave shielding cover 110. The cover edge portion 112 is provided with either an annular groove 113 or an annular protrusion 211 arranged along the circumferential direction of the opening. The microwave shielding cover plate 210 is provided with the other of the annular protrusion 211 and the annular groove 113. In the closed state, the annular protrusion 211 and the annular groove 113 are in concave-convex fit.

[0040] For the microwave cooking appliance according to the embodiment of the present application, through the cooperation of the annular protrusion 211 and the annular groove 113, the spring-up amount of the cover body 200 and the cooking main body 100 is compensated. As long as the spring-up amount of the cover body relative to the cooking main body is less than the height by which the annular protrusion protrudes, at least a part of the annular protrusion will be located in the annular groove, so that there is at least microwave shielding in the extending direction of the opening, keeping the cooking shielding cavity 120 in a relatively closed state, effectively preventing microwave leakage, improving the safety of the cooking appliance, and enhancing the shielding effect. Here, the extending direction of the opening refers to the direction perpendicular to the depth of the cooking shielding cavity and located on the plane where the opening is located.

[0041] When the cover body 200 is in the closed state, the annular protrusion 211 and the annular groove 113 cooperate, and at least part of the annular protrusion 211 is located in the annular groove 113. Even if the cover body 200 rebounds slightly in the opening direction, as long as the annular protrusion 211 does not completely leave the annular groove 113, the annular protrusion 211 can still maintain the relative sealing of the shielding cavity, and the cooking shielding cavity 120 can still maintain a good sealing effect. It should be noted that in the extreme state, the end face of the annular protrusion 211 is flush with the end face of the cover edge portion 112, and at this time, the sealing effect of the cooking shielding cavity 120 can also be ensured.

[0042] It should be noted that the sealing effect of the cooking shielding cavity 120 mentioned in the present application refers to the electromagnetic wave shielding effect that electromagnetic waves cannot escape from the cooking shielding cavity 120 to the outside.

[0043] In one embodiment, the annular protrusion 211 and the annular groove 113 may be a mutually engaged structure. For example, there is an interference fit between the annular protrusion 211 and the annular groove 113, making the connection between the cover body 200 and the cooking main body 100 more stable and greatly improving the sealing effect. Interference fit means that during assembly, the size of the annular protrusion 211 is slightly larger than that of the annular groove 113, and by applying a certain force, the annular protrusion 211 is pressed into the annular groove 113 to achieve a tight fit.

[0044] It should be noted that when the microwave shielding cover plate 210 is provided with an annular protrusion 211, the cover edge portion 112 is correspondingly provided with an annular groove 113; when the microwave shielding cover plate 210 is provided with an annular groove 113, the cover edge portion 112 is correspondingly provided with an annular protrusion 211, and the two cooperate with each other to make up for the spring-up amount of the cover body 200 and the cooking main body 100.

[0045] According to an embodiment of the present application, the cover edge portion 112 includes a first cover edge ring 115 and a second cover edge ring 116 connected to each other. The second cover edge ring 116 surrounds the outer periphery of the first cover edge ring 115, and the second cover edge ring 116 is relatively far from the cover main body 111 with respect to the first cover edge ring 115. The first cover edge ring 115 is recessed along the covering direction of the cover body 200 with respect to the second cover edge ring 116, forming an annular groove 113. For example, Figure 4 as shown, the covering direction of the cover body 200 is downward, and the first cover edge ring 115 is recessed downward with respect to the second cover edge ring 116, forming an annular groove 113.

[0046] It can be understood that the cover edge portion 112 is connected to the cover main body 111, that is, the cover edge portion 112 extends outward along the edge of the top of the cover main body 111. The first cover edge ring 115 close to the cover main body 111 can be regarded as the inner ring of the cover edge portion 112, and the second cover edge ring 116 far from the cover main body 111 can be regarded as the outer ring of the cover edge portion 112. When the annular protrusion 211 on the microwave shielding cover plate 210 cooperates with the annular groove 113, they can be mutually engaged to form a tight sealing interface, achieving a good sealing effect.

[0047] It can be understood that such a setting can ensure that the annular protrusion 211 and the annular groove 113 are engaged closer to the cover main body 111, making the electromagnetic wave shielding effect of the cooking shielding cavity 120 better.

[0048] Of course, in addition to the first cover edge ring 115 being recessed with respect to the second cover edge ring 116 to form an annular groove 113, it can also be that the first cover edge ring 115 protrudes along the covering direction of the cover body 200 with respect to the second cover edge ring 116 to form an annular protrusion 211. Since when the annular protrusion 211 cooperates with the annular groove 113, it is also the annular protrusion 211 and the annular groove 113 that are engaged closer to the cover main body 111, details are not described here again.

[0049] According to an embodiment of the present application, the first shroud rim 115 is the inner edge portion of the shroud rim portion 112 close to the shroud body. It can be understood that the annular protrusion 211 forms a physical barrier to reduce the leakage of microwaves from the gap between the cover plate and the shroud body 111. This shielding effect helps to ensure that when the microwave oven is operating, the microwave energy is mainly concentrated inside the cooking cavity, improving the cooking efficiency and ensuring safety.

[0050] At the same time, the annular protrusion 211 is arranged on the edge of the microwave shielding cover plate 210 facing the cooking shielding cavity 120, which is aesthetically pleasing as a whole, reduces the possibility of the annular groove 113 accumulating dirt, and improves the user experience. It can be ensured that there are no blocking components inside the annular groove 113, thus making it more convenient to clean the microwave shielding cover 110 or the cover body 200.

[0051] Furthermore, a decorative shell is provided outside the microwave shielding cover. A structure flush with the outer periphery of the shroud rim portion is formed on the decorative shell, and the annular groove is formed on the inner edge of the shroud rim portion 112, thus facilitating the cooperation between the decorative shell and the outer ring of the shroud rim portion 112.

[0052] According to an embodiment of the present application, the fitting depth between the annular protrusion 211 and the annular groove 113 is the fitting amount. The cover body 200 is provided with a hinged side and a free side. The hinged side of the cover body 200 is hinged to the cooking main body 100. The free side and the hinged side are respectively located at opposite ends of the cover body 200. Along the direction from the hinged side towards the free side, the fitting amount increases.

[0053] It can be understood that along the direction from the hinged side towards the free side, the spring-up amount of the cover body 200 and the cooking main body 100 also gradually increases. The fitting amount corresponds to the spring-up amount and gradually increases from the hinged side towards the free side, which can ensure that the cover body 200 forms a tighter seal along the entire edge when closed. The gradually increasing fitting amount can enhance the microwave shielding effect, reduce microwave leakage, and ensure the safety and efficiency of the microwave cooking appliance during operation.

[0054] According to an embodiment of the present application, the shroud rim portion 112 is provided with a plurality of annular grooves 113. The plurality of annular grooves 113 are spaced along the direction from the inner edge of the shroud rim portion 112 close to the shroud body 111 to the outer edge away from the shroud body 111. The microwave shielding cover plate 210 is provided with a plurality of annular protrusions 211, and the annular grooves 113 and the annular protrusions 211 correspond one by one; or, the shroud rim portion 112 is provided with a plurality of annular protrusions 211. The plurality of annular protrusions 211 are spaced along the direction from the inner edge of the shroud rim portion 112 close to the shroud body 111 to the outer edge away from the shroud body 111. The microwave shielding cover is provided with a plurality of annular grooves 113, and the annular grooves 113 and the annular protrusions 211 correspond one by one.

[0055] It can be understood that the annular groove 113 or the annular protrusion 211 is arranged at intervals along the cover edge portion 112 in the direction from the inner edge close to the cover main body 111 to the outer edge far from the cover main body 111, that is, the annular protrusion 211 or the annular groove 113 is distributed at intervals centered on the cooking shielding cavity 120, forming a plurality of annular structures.

[0056] It can be understood that the arrangement of multiple annular protrusions 211 or grooves can more effectively block microwave leakage, improve the shielding effect, so as to better concentrate microwave energy inside the cooking cavity, and improve cooking efficiency and safety.

[0057] According to an embodiment of the present application, the cover body 200 further includes a cover body housing 220, the microwave shielding cover plate 210 is arranged inside the cover body housing 220, the cooking main body 100 is provided with a first clamping structure 114, the cover body housing 220 is provided with a second clamping structure 221, in the closed state, the first clamping structure 114 is clamped to the second clamping structure 221, the cover body 200 has a hinged side and a free side, the hinged side and the free side are opposite, the second clamping structure 221 is arranged on the free side, and the hinged side of the cover body 200 is hinged to the cooking main body 100.

[0058] It can be understood that through the close cooperation of the first clamping structure 114 and the second clamping structure 221, the cover body 200 and the cooking main body 100 can achieve good sealing, reduce microwave leakage, and improve the safety and efficiency of the microwave oven. Ensure that the cover body 200 is firmly fixed on the cooking main body 100 during the cooking process, preventing accidental opening, especially in the case of high pressure or high temperature, and improving the use safety.

[0059] According to an embodiment of the present application, the cooking main body 100 includes a microwave generating device 300 and a waveguide structure 400, the microwave generating device 300 is used to generate electromagnetic waves, and the waveguide structure 400 is connected to the cover main body 111 and is used to introduce the electromagnetic waves into the cooking shielding cavity 120.

[0060] It can be understood that the microwave generating device 300 is a component in the cooking main body 100 that generates electromagnetic waves (mainly microwaves). The microwave generating device 300 includes a magnetron or other types of microwave generators, and these devices are responsible for generating electromagnetic waves with specific frequencies. The waveguide structure 400 can adopt forms such as waveguides and antenna arrays to optimize the microwave transmission path and distribution pattern. The waveguide structure 400 can effectively transmit the electromagnetic waves generated by the microwave generating device 300 into the cooking shielding cavity 120, ensuring that the microwave energy is concentrated on the food to be heated and improving the heating efficiency.

[0061] The waveguide structure 400 is connected to the cover body 111, and effectively guides the electromagnetic waves generated by the microwave generating device 300 into the cooking shielding cavity 120. When the microwave generating device 300 generates microwaves, these microwaves are guided into the cooking shielding cavity 120 through the waveguide structure 400. In the closed environment of the cooking shielding cavity 120, the microwaves interact with the food in the inner container 130, causing polar molecules such as water molecules in the food to generate high-frequency vibrations, thereby generating heat and heating the food. Due to the strong penetrability and uniform heating characteristics of microwave heating, the cooking time can be greatly shortened, the cooking efficiency can be improved, and the nutrition and taste of the food can be retained.

[0062] In addition, the cooking shielding cavity 120 can prevent microwaves from leaking into the external environment, ensuring the safety of users and the stability of the electromagnetic environment. At the same time, the design of the cover body 111 and other related components is also aimed at improving the stability and durability of the entire microwave cooking appliance.

[0063] According to an embodiment of the present application, the shielding cover plate 210 is a metal cover plate, and the cooking shielding cover 110 is a metal cooking shielding cover.

[0064] It can be understood that the metal material has good electrical conductivity, can effectively shield electromagnetic waves, and prevent microwave leakage. The cooking shielding cavity 120 formed between the metal cover plate and the metal cooking shielding cover can well reflect and disperse microwaves, thereby improving the heating uniformity.

[0065] According to an embodiment of the present application, the cooking main body 100 includes an inner container 130, and the inner container 130 is disposed in the cooking shielding cavity 120, and the opening of the cooking shielding cavity 120 is formed at the top.

[0066] It can be understood that the cooking shielding cavity 120 is a cavity structure surrounding the inner container 130, and its main function is to provide a closed cooking environment to prevent the leakage of heat, steam, electromagnetic radiation, etc. generated during the cooking process. At the same time, it can also serve as a barrier to protect the inner container and cooking components from external interference and damage.

[0067] The opening of the cooking shielding cavity 120 is formed at the top. This design allows users to put food into the inner container from above and conveniently take it out after cooking. In addition, the opening at the top also facilitates the installation and disassembly of the top cover plate or other components of the cooking shielding cavity for cleaning and maintenance.

[0068] Specifically, the inner container 130 can be a ceramic inner container or a glass inner container.

[0069] Finally, it should be noted that the above embodiments are only used to illustrate the present application, rather than limiting the present application. Although the present application has been described in detail with reference to the embodiments, those of ordinary skill in the art should understand that various combinations, modifications or equivalent replacements of the technical solutions of the present application do not depart from the spirit and scope of the technical solutions of the present application, and should all be covered within the scope of the claims of the present application.

Claims

1. A microwave cooking appliance, characterized in that, Comprising: A cooking main body (100), including a microwave shielding cover (110), and the microwave shielding cover (110) has an opening; A cover body (200), including a microwave shielding cover plate (210), and the cover body (200) is disposed at the opening of the microwave shielding cover (110) in an openable and closable manner. When the cover body (200) is in an open state, the opening of the microwave shielding cover (110) is open. When the cover body (200) is in a closed state, the microwave shielding cover plate (210) shields the opening, and the two enclose a cooking shielding cavity (120); The microwave shielding cover (110) includes a cover main body (111) and a cover edge portion (112) connected to each other. The cover edge portion (112) encloses the opening of the microwave shielding cover (110). The cover edge portion (112) is provided with one of an annular groove (113) and an annular protrusion (211) arranged along the circumference of the opening. The microwave shielding cover plate (210) is provided with the other of the annular protrusion (211) and the annular groove (113). In the closed state, the annular protrusion (211) and the annular groove (113) are in concave-convex fit.

2. The microwave cooking appliance according to claim 1, wherein, The cover edge portion (112) includes a first cover edge ring (115) and a second cover edge ring (116) connected to each other. The second cover edge ring (116) surrounds the outer circumference of the first cover edge ring (115), and the second cover edge ring (116) is farther from the cover main body (111) than the first cover edge ring (115); The first cover edge ring (115) is recessed along the closing direction of the cover body (200) relative to the second cover edge ring (116), forming the annular groove (113); Or, the first cover edge ring (115) protrudes along the closing direction of the cover body (200) relative to the second cover edge ring (116), forming the annular protrusion (211).

3. The microwave cooking appliance according to claim 2, wherein, The height difference between the first cover edge ring (115) and the second cover edge ring (116) is 0.1 mm - 1 mm.

4. The microwave cooking appliance according to claim 2, characterized in that, The first cover edge ring (115) is the inner edge portion of the cover edge portion (112) close to the cover main body (111).

5. The microwave cooking appliance according to claim 1, characterized in that, The fitting depth between the annular protrusion (211) and the annular groove (113) is the fitting amount. The cover body (200) is provided with a hinged side and a free side. The hinged side of the cover body (200) is hinged to the cooking main body (100). The free side and the hinged side are respectively located at opposite ends of the cover body. Along the direction from the hinged side towards the free side, the fitting amount increases.

6. The microwave cooking appliance according to claim 1, wherein, The cover edge portion (112) is provided with a plurality of the annular grooves (113). The plurality of annular grooves (113) are spaced along the direction from the inner edge close to the cover main body (111) to the outer edge far from the cover main body (111) of the cover edge portion (112). The microwave shielding cover plate (210) is provided with a plurality of the annular protrusions (211), and the annular grooves (113) and the annular protrusions (211) correspond one by one; Alternatively, the cover edge portion (112) is provided with a plurality of annular protrusions (211), and the plurality of annular protrusions (211) are arranged at intervals along the cover edge portion (112) in a direction from the inner edge close to the cover body (111) to the outer edge away from the cover body (111). The microwave shielding cover plate is provided with a plurality of annular grooves (113), and the annular grooves (113) and the annular protrusions (211) correspond to each other one by one.

7. The microwave cooking appliance according to any one of claims 1 to 6, characterized in that, The cover body (200) further includes a cover body housing (220). The microwave shielding cover plate (210) is disposed inside the cover body housing (220). The cooking main body (100) is provided with a first clamping structure (114), and the cover body housing (220) is provided with a second clamping structure (221). In the closed state, the first clamping structure (114) is clamped to the second clamping structure (221). The cover body (200) has a hinged side and a free side, the hinged side and the free side are opposite to each other, the second clamping structure (221) is disposed on the free side, and the hinged side of the cover body (200) is hinged to the cooking main body (100).

8. The microwave cooking appliance according to any one of claims 1 to 6, characterized in that, The microwave shielding cover plate (210) is a metal cover plate, and the microwave shielding cover (110) is a metal microwave shielding cover (110).

9. The microwave cooking appliance according to any one of claims 1 to 6, characterized in that, The cooking main body (100) includes a microwave generating device (300) and a waveguide structure (400). The microwave generating device (300) is used to generate electromagnetic waves, and the waveguide structure (400) is connected to the cover body (111) and is used to introduce the electromagnetic waves into the cooking shielding cavity (120).

10. The microwave cooking appliance according to any one of claims 1 to 6, characterized in that, The cooking main body (100) includes an inner container (130). The inner container (130) is disposed inside the cooking shielding cavity (120), and the opening of the cooking shielding cavity (120) is formed at the top.

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