Cooking device

Abstract

The embodiment of the utility model provides a cooking device. The cooking device comprises a shell and a heating assembly. The shell is provided with a cooking cavity, the cavity wall of the cooking cavity comprises a first wall part and a second wall part, the first wall part is provided with a first through hole, and the second wall part is provided with a second through hole. The heating assembly is arranged in the cooking cavity and comprises a heating piece and a microwave shielding tube shell, the heating piece comprises a first wiring end and a second wiring end, the first wiring end penetrates through the first through hole, the second wiring end penetrates through the second through hole, the microwave shielding tube shell is arranged on the periphery of the heating piece in a sleeving mode, and a conductive path is established between the microwave shielding tube shell and the cavity wall. The microwave shielding tube shell is used for isolating the heating piece from microwaves in the cooking cavity, the heating effect of the microwaves in the cooking cavity on the heating piece can be effectively reduced, and therefore the sparking phenomenon is reduced. A conductive path is established between the microwave shielding tube shell and the cavity wall, so that the microwave shielding tube shell and the cavity wall form a conductor, and the possibility that the microwave shielding tube shell radiates microwaves outwards from the first through hole or the second through hole is reduced.

Description

Technical Field

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

[0002] In some related technologies, cooking appliances with microwave heating functions also include heating elements. These elements utilize the heat from the heating element and microwaves to heat food together, improving cooking efficiency or enabling a grilling function. However, the heating element can spark under microwave conditions, affecting the safety of the cooking appliance. Utility Model Content

[0003] In view of this, the present application aims to provide a cooking device that can effectively reduce the heating effect of microwaves on the heating element and improve the safety of the cooking device.

[0004] To achieve the above objectives, the technical solution of this application embodiment is implemented as follows:

[0005] This application provides a cooking apparatus, including:

[0006] The housing has a cooking cavity, the cavity wall of which includes a first wall portion and a second wall portion, the first wall portion having a first through hole and the second wall portion having a second through hole;

[0007] A heating element is disposed inside the cooking cavity. The heating element includes a heating element and a microwave shielding shell. The heating element includes a first terminal and a second terminal. The first terminal passes through a first through hole, and the second terminal passes through the second through hole. The microwave shielding shell is sleeved on the outer periphery of the heating element, and the microwave shielding shell establishes a conductive path with the cavity wall.

[0008] In some embodiments, the microwave shielding housing is sealed at both ends of the first through hole and the second through hole.

[0009] In some embodiments, the microwave shielding shell includes a shell body and two connecting structures disposed at opposite ends of the shell body. One of the connecting structures is located on the side of the first wall away from the cooking cavity and applies a force toward the cooking cavity to the first wall. The other connecting structure is located on the side of the second wall away from the cooking cavity and applies a force toward the cooking cavity to the second wall.

[0010] In some embodiments, at least one of the connecting structures is a nut, the shell body has a threaded section, and the nut is threadedly connected to the threaded section.

[0011] In some embodiments, one of the two connection structures is a nut, and the other is fixed relative to the main body of the tube shell.

[0012] In some embodiments, the connecting structure fixed relative to the main body of the tube shell is a first connecting structure, and the first connecting structure and the main body of the tube shell are an integral structure.

[0013] In some embodiments, when projected onto a plane perpendicular to the length direction of the tube body, the projection of any part of the tube body lies within the projections of the first through hole and the second through hole, so that the tube body can pass through the first through hole and the second through hole.

[0014] In some embodiments, the cooking device includes a conductive washer fitted around the outer periphery of the tube body, the conductive washer being disposed between the first wall portion and the connecting structure that applies force to the first wall portion, and / or, the conductive washer being disposed between the second wall portion and the connecting structure that applies force to the second wall portion.

[0015] In some embodiments, the conductive washer is a copper washer.

[0016] In some embodiments, the heating element is tubular, and the difference between the inner diameter of the microwave shielding shell and the outer diameter of the heating element is 2mm to 4mm.

[0017] In some embodiments, the shell wall of the microwave shielding tube is provided with multiple heat dissipation holes, and the maximum size of the heat dissipation holes does not exceed 1 / 4 of the microwave wavelength.

[0018] In some embodiments, the maximum size of the heat dissipation hole is 3mm to 5mm.

[0019] In some embodiments, the cooking device includes a fixed bracket disposed outside the cooking cavity, and the fixed bracket is provided with a limiting hole, into which the first terminal or the second terminal is inserted and fixed.

[0020] In some embodiments, the cavity wall of the cooking cavity includes a cavity top plate, a portion of which protrudes upward to form a recessed region on the inner side of the cavity top plate, the heating element is partially disposed within the recessed region, and the first wall portion and the second wall portion constitute part of the sidewall of the recessed region.

[0021] The cooking apparatus provided in this application uses a microwave shielding shell to isolate the heating element from the microwaves inside the cooking cavity. This effectively reduces the heating effect of the microwaves inside the cooking cavity on the heating element, thereby reducing the occurrence of arcing. The microwave shielding shell establishes a conductive path with the cavity wall, forming a conductor. Since the cavity wall of the cooking cavity does not generate a significant current in the changing microwave magnetic field, the microwave shielding shell also does not generate a significant current. This effectively reduces the possibility of the microwave shielding shell generating microwaves, helping to reduce the likelihood of microwaves radiating outwards from the first or second through-hole, thus improving the safety of the cooking apparatus. Attached Figure Description

[0022] Figure 1 This is a partial structural schematic diagram of the cooking apparatus provided in the embodiments of this application;

[0023] Figure 2 for Figure 1 An enlarged schematic diagram of part A of the structure shown;

[0024] Figure 3 for Figure 1 An enlarged schematic diagram of part B of the structure shown;

[0025] Figure 4 for Figure 1 A structural diagram of the structure shown from another angle;

[0026] Figure 5 This is a schematic diagram of the structure of the heating component provided in an embodiment of this application.

[0027] Explanation of reference numerals in the attached figures

[0028] 10. Shell; 11. Cooking cavity; 111. Cavity top plate; 1111. First wall; 1112. Second wall; 1113. Recessed area; 20. Heating element; 21. Heating component; 211. First terminal; 212. Second terminal; 22. Microwave shielding tube shell; 221. Tube shell body; 2211. Threaded section; 222. Connection structure; 223. Heat dissipation hole; 30. Conductive washer; 40. Fixing bracket; 41. Limiting hole; 50. Heat insulation cover; 51. Mounting hole. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0030] The specific technical features described in the specific embodiments can be combined in any suitable manner without contradiction. For example, different combinations of specific technical features can form different embodiments and technical solutions. To avoid unnecessary repetition, the various possible combinations of the specific technical features in this application will not be described separately.

[0031] In the following description, the terms "first," "second," etc., are used merely to distinguish different objects and do not indicate that the objects have the sameness or relationship. It should be understood that the directional descriptions "above," "below," "outside," and "inside" refer to the orientation under normal use conditions, while "left" and "right" refer to the left and right directions shown in the corresponding diagrams, which may or may not be the left and right directions under normal use conditions.

[0032] It should be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. "A plurality of" means two or more.

[0033] Please refer to Figures 1 to 5 This application provides a cooking device, including a housing 10 and a heating element 20.

[0034] Please see Figure 1 The housing 10 has a cooking cavity 11, the cavity wall of which includes a first wall portion 1111 and a second wall portion 1112. The first wall portion 1111 has a first through hole, and the second wall portion 1112 has a second through hole. The cooking cavity 11 is used for cooking food. It is understood that the cooking cavity 11 is at least capable of heating food using microwaves.

[0035] The heating element 20 is located inside the cooking cavity 11. In other words, the cooking cavity 11 can also use the heat provided by the heating element 20 to heat the food.

[0036] In some embodiments, the heating assembly 20 includes a heating element 21, which includes a first terminal 211 and a second terminal 212. The first terminal 211 passes through a first through hole, and the second terminal 212 passes through a second through hole. That is, the first terminal 211 and the second terminal 212 are used to connect to the circuit outside the cooking cavity 11 to realize the heating function of the heating element 21.

[0037] In some embodiments, please refer to Figure 5 The heating element 20 includes a microwave shielding shell 22, which is fitted around the heating element 21. In other words, the microwave shielding shell 22 is used to isolate the heating element 21 from the microwaves in the cooking cavity 11, which can effectively reduce the heating effect of the microwaves in the cooking cavity 11 on the heating element 21, thereby reducing the occurrence of sparking and improving the safety of the cooking device.

[0038] It should be noted that the microwave shielding shell 22 refers to a component that has a shielding effect on microwaves. That is, when microwaves reach the microwave shielding shell 22, the microwave shielding shell 22 can reflect the microwaves to prevent the microwaves from passing through the microwave shielding shell 22 and propagating.

[0039] Understandably, the microwave shielding shell 22 can shield microwaves, and the heat generated by the heating element 21 is transferred to the cooking cavity 11 through the microwave shielding shell 22.

[0040] In some embodiments, the microwave shielding shell 22 establishes a conductive path with the cavity wall. The microwave shielding shell 22 is located inside the cooking cavity 11. When food is heated using microwaves in the cooking cavity 11, the microwaves inside the cooking cavity 11 are changing. If the microwave shielding shell 22 does not establish a conductive path with the cavity wall, then the microwave shielding shell 22 becomes an independent conductor within the cooking cavity 11. When heated using microwaves, the independent conductor generates a changing current in the changing microwave magnetic field, and this changing current generates microwaves. In other words, if the microwave shielding shell 22 does not establish a conductive path with the cavity wall, the microwave shielding shell 22 will generate microwaves, which may leak out through the first through hole and the second through hole. When the microwave shielding tube shell 22 establishes a conductive path with the cavity wall, the microwave shielding tube shell 22 and the cavity wall form a conductor. The cavity wall of the cooking cavity 11 will not generate a significant current in the changing microwave magnetic field, that is, the microwave shielding tube shell 22 will not generate a significant current. This effectively reduces the possibility of the microwave shielding tube generating microwaves, which helps to reduce the possibility of the microwave shielding tube shell 22 radiating microwaves outward from the first through hole or the second through hole, and improves the safety of the cooking device.

[0041] It should be noted that the heating element provided in this application embodiment can operate separately from microwave heating, or it can operate simultaneously with microwave heating. Therefore, the cooking device provided in this application embodiment can be used in cooking devices that integrate grilling and microwave heating devices, such as microwave ovens and microwave-steam-grill combos, or it can be used directly in a microwave oven.

[0042] In some embodiments, the microwave shielding housing 22 seals both ends of the first and second through holes. This is to minimize the leakage of microwaves from the cooking cavity 11 through the gaps between the microwave shielding housing 22 and the first and second through holes.

[0043] In some embodiments, such as Figure 1 As shown, the microwave shielding shell 22 includes a shell body 221 and two connecting structures 222 disposed at opposite ends of the shell body 221. One connecting structure 222 is located on the side of the first wall portion 1111 away from the cooking cavity 11 and applies a force toward the cooking cavity 11 to the first wall portion 1111. The other connecting structure 222 is located on the side of the second wall portion 1112 away from the cooking cavity 11 and applies a force toward the cooking cavity 11 to the second wall portion 1112. The two connecting structures 222 achieve contact between the microwave shielding shell 22 and the first wall portion 1111 and the second wall portion 1112, facilitating tight contact and sealing the first and second through holes at both ends of the microwave shielding shell 22.

[0044] In some embodiments, at least one connecting structure 222 is a nut, and the tube shell body 221 has a threaded section 2211, with the nut threadedly connected to the threaded section 2211. The nut and the threaded section 2211 are detachably connected, which on the one hand helps to achieve a sealed connection between the nut and the first wall portion 1111 or the second wall portion 1112, and on the other hand helps to achieve a detachable connection between the tube shell body 221 and the cavity wall of the cooking cavity 11.

[0045] It is understood that in some embodiments, both connecting structures 222 may be nuts. In this way, the two nuts generate clamping forces on the first wall portion 1111 and the second wall portion 1112 respectively, which facilitates the conductive connection between the tube shell body 221 and the cavity wall, and also facilitates the sealing of the first through hole and the second through hole by the two nuts respectively.

[0046] In other embodiments, such as Figure 2 and Figure 3 As shown, one of the two connecting structures 222 is a nut, and the other is fixed relative to the shell body 221. For ease of distinction, the connecting structure 222 fixed relative to the shell body 221 is defined as the first connecting structure. That is, the first connecting structure is fixed relative to the shell body 221, meaning that the first connecting structure will not move back and forth on the shell body 221. The first connecting structure can be used to abut against the first wall portion 1111, and the nut can be used to abut against the second wall portion 1112. When assembling the microwave shielded shell 22, the first connecting structure can play a pre-positioning role. Assembly of the microwave shielded shell 22 can be achieved simply by tightening the nut to the threaded section 2211 on the shell body 221 with one hand. It can also be understood that the first connecting structure can abut against the second wall portion 1112, and the nut can abut against the first wall portion 1111.

[0047] In some embodiments, the first connecting structure and the tube shell body 221 are integrally formed. This facilitates the processing of the first connecting structure and the tube shell body 221, and the integral structure allows the first connecting structure to be better fixed to the tube shell body 221. For example, the first connecting structure can be a flanged structure formed by folding the edge of the tube shell body 221 outward. The flanged structure helps to form a flat sealing surface, which facilitates the flanged structure to abut against the first wall portion 1111 to achieve the sealing of the microwave shielded tube shell 22 against the first through hole or the second through hole.

[0048] It is understandable that the first connecting structure and the tube shell body 221 can also be separate structures. For example, the first connecting structure can be a ring welded to the outer periphery of the tube shell body 221, or a ring that is interference-fitted with the outer periphery of the tube shell body 221.

[0049] In some embodiments, the projection of any part of the tube body 221 onto a plane perpendicular to its length direction lies within the projection of the first through hole and the second through hole, so that the tube body 221 can pass through the first through hole and the second through hole. That is, the outer diameter of the tube body 221 is smaller than the diameter of the first through hole and the diameter of the second through hole, thus facilitating the tube body 221 to pass through the first through hole and the second through hole in sequence, and making the assembly of the tube body 221 easier.

[0050] In an embodiment where one of the two connecting structures 222 is a nut and the other is fixed relative to the shell body 221, the first connecting structure helps to achieve the pre-positioning of the shell body 221 when the shell body 221 passes through the first through hole and the second through hole in sequence.

[0051] In some embodiments, the cooking device includes a conductive washer 30, which is sleeved on the outer periphery of the shell body 221. The conductive washer 30 is disposed between the first wall portion 1111 and the connecting structure 222 that applies force to the first wall portion 1111, and / or, the conductive washer 30 is disposed between the second wall portion 1112 and the connecting structure 222 that applies force to the second wall portion 1112. The conductive washer 30 helps to increase the contact area between the first wall portion 1111 and / or the second wall portion 1112 and the microwave shielding shell 22. On the one hand, this facilitates surface contact between the microwave shielding shell 22 and the cavity wall to establish a conductive path. On the other hand, it helps to improve the sealing performance between the first wall portion 1111 and / or the second wall portion 1112 and the microwave shielding shell 22, thereby further reducing the possibility of microwaves in the cooking cavity 11 leaking out from the gap between the microwave shielding shell 22 and the first through hole and / or the gap between the microwave shielding shell 22 and the second through hole.

[0052] In some embodiments, the conductive washer 30 is a copper washer, as copper has good electrical conductivity. It is understood that in other embodiments, the conductive washer 30 may also be an aluminum washer or an iron washer.

[0053] In some embodiments, the heating element 21 is tubular, and the difference between the inner diameter of the microwave shielding shell 22 and the outer diameter of the heating element is 2mm to 4mm. This creates a gap between the heating element and the microwave shielding shell 22, which facilitates the installation of the heating element into the microwave shielding shell 22 and helps to prevent microwave leakage in the cooking cavity 11 due to an excessively large gap between the heating element and the microwave shielding shell 22.

[0054] In some embodiments, the tubular heating element 21 may be one of a graphene tube, a metal tube, or a carbon fiber tube.

[0055] In other embodiments, the tubular heating element 21 may include a heat-conducting shell and a heating element disposed within the heat-conducting shell, the heat-conducting shell serving to protect the heating element. For example, the heat-conducting shell may be a quartz tube shell. The heating element can be directly heated by electricity, and the material and shape of the heating element are not limited herein.

[0056] It should be noted that the inner diameter of the microwave shielding tube shell 22 can be understood as the maximum diameter of a cylinder that the microwave shielding tube shell 22 can accommodate. The outer diameter of the heating element can be understood as the minimum inner diameter of the cylinder that can accommodate the tubular heating element.

[0057] It is understandable that, along the length direction perpendicular to the microwave shielding shell 22, the cross-sectional shape of the tubular heating element can be circular, elliptical, triangular, quadrilateral, pentagonal, hexagonal, etc., and the cross-sectional shape of the microwave shielding shell 22 can also be circular, elliptical, triangular, quadrilateral, pentagonal, hexagonal, etc. The shape of the tubular heating element and the cross-sectional shape of the microwave shielding shell 22 can be the same or different.

[0058] In some embodiments, the tubular heating element has the same cross-sectional shape as the microwave shielding shell 22 along the extension direction perpendicular to the microwave shielding shell 22. This facilitates the coaxial arrangement of the heating element and the microwave shielding shell 22. The coaxial arrangement ensures that the heating element and the microwave shielding shell 22 are equidistant, which helps to reduce the possibility of local deformation of the microwave shielding shell 22 that could damage the heating element.

[0059] In some embodiments, please refer to Figure 5 The microwave shielding tube shell 22 has multiple heat dissipation holes 223 on its shell wall. The maximum size of each heat dissipation hole 223 does not exceed 1 / 4 of the microwave wavelength. The heat dissipation holes 223 allow heat generated by the heating element 21 to be transferred to the cooking cavity 11, improving heat transfer efficiency. Furthermore, the maximum size of the heat dissipation holes 223, not exceeding 1 / 4 of the microwave wavelength, minimizes the possibility of microwaves from the cooking cavity 11 reaching the interior of the microwave shielding tube shell 22. This improves heat transfer efficiency without compromising the microwave shielding effect of the microwave shielding tube shell 22.

[0060] In some embodiments, the maximum size of the heat dissipation hole 223 is 3mm to 5mm. This helps to prevent the heat dissipation hole 223 from being too large, which would cause microwaves in the cooking cavity 11 to enter the microwave shielding tube shell 22. On the other hand, it helps to prevent the heat dissipation hole 223 from being too small, which would affect the heat transfer effect.

[0061] It is understood that the heat dissipation hole 223 can be circular or polygonal, such as triangle, quadrilateral, pentagon, hexagon, etc. The embodiments of this application do not limit the shape of the heat dissipation hole 223, as long as the maximum size of the heat dissipation hole 223 meets the requirements for shielding microwaves.

[0062] In some embodiments, the cooking device includes a fixed bracket 40 disposed outside the cooking cavity 11. The fixed bracket 40 has a limiting hole 41, into which a first terminal 211 or a second terminal 212 is inserted and fixed. That is, the limiting hole 41 on the fixed bracket 40 is used to restrict the heating element 21 from moving back and forth or rotating, which helps to ensure the stability of the heating element 21 during operation.

[0063] It is understood that in other embodiments, there may be at least two fixing brackets 40, one of which is located on one side of the first wall portion 1111 and the other is located on one side of the second wall portion 1112, so that the first terminal 211 is inserted into one of the limiting holes 41 and the second terminal 212 is inserted into the other limiting hole 41, thereby fixing both ends of the heating element 21 and further improving the stability of the heating element 21 in operation.

[0064] For example, such as Figure 1 As shown, the cavity wall of the cooking cavity 11 includes a cavity top plate 111. A portion of the cavity top plate 111 protrudes upward to form a recessed region 1113 on the inner side of the cavity top plate 111. The heating element 20 is partially disposed within the recessed region 1113. The first wall portion 1111 and the second wall portion 1112 constitute part of the sidewall of the recessed region 1113. In other words, the heating element 20 is disposed on the top side of the cooking cavity 11, which ensures that the heat is evenly distributed from top to bottom, avoiding local overheating or uneven heating of the food. Moreover, by providing an upwardly protruding recessed region 1113 on the cavity top plate 111, it helps to increase the volume of the cooking cavity 11, and at the same time helps to increase the height of the heating element 20 from the bottom wall of the cooking cavity 11, that is, it helps to increase the distance between the heating element 20 and the food, thereby helping to reduce the possibility of the food directly contacting the heating element 20.

[0065] In some embodiments, the cooking device includes a heat shield 50, which is fixed to the outside of the cavity top plate 111 and covers the outside of the recessed area 1113. The heat shield 50 helps to reduce the outward radiation of heat generated by the heating element 20.

[0066] In some embodiments, the heat insulation cover 50 has two heat insulation walls arranged opposite each other along the length of the tube shell body 221. Each heat insulation wall has a mounting hole 51. The first terminal 211 and the second terminal 212 pass through the two mounting holes 51 respectively, and the two heat insulation walls are used to support the first terminal 211 and the second terminal 212 respectively, thereby supporting the heating element 21.

[0067] In the description of this application, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the embodiments of this application. In this application, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Furthermore, without contradiction, those skilled in the art can combine different embodiments or examples described in this application, as well as features of different embodiments or examples.

[0068] The above are merely preferred embodiments of this application and are not intended to limit the scope of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application.

Claims

1. A cooking apparatus, characterized in that, include: The housing has a cooking cavity, the cavity wall of which includes a first wall portion and a second wall portion, the first wall portion having a first through hole and the second wall portion having a second through hole; A heating element is disposed inside the cooking cavity. The heating element includes a heating element and a microwave shielding shell. The heating element includes a first terminal and a second terminal. The first terminal passes through a first through hole, and the second terminal passes through the second through hole. The microwave shielding shell is sleeved on the outer periphery of the heating element, and the microwave shielding shell establishes a conductive path with the cavity wall.

2. The cooking apparatus according to claim 1, characterized in that, The microwave shielding tube shell is sealed at both ends by the first through hole and the second through hole.

3. The cooking apparatus according to claim 2, characterized in that, The microwave shielding shell includes a shell body and two connecting structures disposed at opposite ends of the shell body. One of the connecting structures is located on the side of the first wall away from the cooking cavity and applies a force toward the cooking cavity to the first wall. The other connecting structure is located on the side of the second wall away from the cooking cavity and applies a force toward the cooking cavity to the second wall.

4. The cooking apparatus according to claim 3, characterized in that, At least one of the connecting structures is a nut, the tube shell body has a threaded section, and the nut is threadedly connected to the threaded section.

5. The cooking apparatus according to claim 4, characterized in that, One of the two connection structures is a nut, and the other is fixed relative to the main body of the tube shell.

6. The cooking apparatus according to claim 5, characterized in that, The connecting structure fixed relative to the main body of the tube shell is the first connecting structure, and the first connecting structure and the main body of the tube shell are an integral structure.

7. The cooking apparatus according to claim 3, characterized in that, In a plane perpendicular to the length direction of the main body of the tube, the projection of any part of the main body of the tube lies within the projection of the first through hole and the second through hole, so that the main body of the tube can pass through the first through hole and the second through hole.

8. The cooking apparatus according to claim 3, characterized in that, The cooking device includes a conductive washer fitted around the outer periphery of the tube shell body, the conductive washer being disposed between the first wall portion and the connecting structure that applies force to the first wall portion, and / or, the conductive washer being disposed between the second wall portion and the connecting structure that applies force to the second wall portion.

9. The cooking apparatus according to claim 8, characterized in that, The conductive washer is a copper washer.

10. The cooking apparatus according to claim 1, characterized in that, The heating element is tubular, and the difference between the inner diameter of the microwave shielding shell and the outer diameter of the heating element is 2mm to 4mm.

11. The cooking apparatus according to claim 1, characterized in that, The microwave shielding tube shell has multiple heat dissipation holes on its shell wall, and the maximum size of the heat dissipation holes does not exceed 1 / 4 of the microwave wavelength.

12. The cooking apparatus according to claim 11, characterized in that, The maximum size of the heat dissipation hole is 3mm to 5mm.

13. The cooking apparatus according to claim 1, characterized in that, The cooking device includes a fixed bracket located outside the cooking cavity. The fixed bracket has a limiting hole, and the first terminal or the second terminal is inserted into the limiting hole and fixed thereto.

14. The cooking apparatus according to claim 1, characterized in that, The cooking cavity wall includes a cavity top plate, a portion of which protrudes upward to form a recessed area on the inner side of the cavity top plate. The heating element is partially disposed within the recessed area, and the first wall portion and the second wall portion constitute part of the sidewall of the recessed area.

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