Heating piece, heating assembly and microwave cooking utensil

Abstract

The invention discloses a heating piece, a heating assembly and a microwave cooking utensil, the heating piece comprises a heating pipe, a mounting seat and a microwave shielding cover, the heating pipe comprises a heating part, a heating body is arranged in the heating part and is a carbon fiber heating body or a graphite heating body, the mounting seat is connected with the heating pipe, the microwave shielding cover covers the outer side of the heating pipe, and the microwave shielding cover is arranged on the mounting seat. And the base is matched with the mounting seat. When the heating piece is used for the microwave cooking device, in the process that food in the cooking cavity is heated through microwaves and the heating pipe at the same time, heat of the heating pipe is radiated into the cooking cavity through the microwave shielding cover, so that the food in the cooking cavity is heated; the microwave in the cooking cavity cannot reach the position of the heating tube under the shielding of the microwave shielding cover, so that the problem of sparking when the heating tube is used in a microwave environment is solved, and the safety in the using process is improved.

Description

Technical Field

[0001] This application belongs to the technical field of household appliances, and particularly relates to a heating element, a heating assembly, and a microwave cooking appliance. Background Art

[0002] What is provided in this section is only background information related to the present disclosure, and it is not necessarily prior art.

[0003] In cooking appliances with microwave cooking functions, a heating tube is usually included. The heating tube and microwave are used to jointly heat food so as to improve the cooking effect of the food.

[0004] In existing heating tubes, the heating element usually includes carbon fiber or graphite. When the heating element is used in a microwave environment, carbon fiber or graphite is prone to arcing problems, thus reducing the safety during use. Summary of the Invention

[0005] The purpose of this application is to at least solve the arcing problem that occurs when existing heating tubes are used in a microwave environment. This purpose is achieved through the following technical solutions:

[0006] A first aspect of this application proposes a heating element for a microwave cooking appliance, and the heating element includes:

[0007] A heating tube, the heating tube includes a heating part, and a heating element is arranged in the heating part. The heating element is a carbon fiber heating element or a graphite heating element;

[0008] A mounting seat, the mounting seat is connected to the heating tube;

[0009] A microwave shielding cover, the microwave shielding cover covers the outside of the heating tube and cooperates with the mounting seat.

[0010] When the heating element in this application is used in a microwave cooker, during the process of heating the food in the cooking cavity by using microwave and heating tube simultaneously, the heat of the heating tube is radiated into the cooking cavity through the microwave shielding cover to realize heating the food in the cooking cavity. The microwave in the cooking cavity cannot reach the position of the heating tube under the shielding of the microwave shielding cover, thus reducing the arcing problem that occurs when the heating tube is used in a microwave environment, and improving the safety during use.

[0011] In addition, according to the heating element of this application, the following additional technical features may also be provided:

[0012] In some embodiments of this application, the number of the mounting seats is two. Along the length direction of the heating tube, the two mounting seats are arranged at intervals, and the microwave shielding cover cooperates with the two mounting seats respectively.

[0013] In some embodiments of the present application, the heating tube further includes a heating part and two connecting parts. Along the length direction of the heating tube, the two connecting parts are respectively connected to opposite ends of the heating part, and each connecting part is connected to one of the mounting seats, and the heating element is arranged inside the heating part.

[0014] In some embodiments of the present application, along the length direction of the heating tube, the microwave shielding cover includes two oppositely arranged mounting parts, and the mounting parts are in plug-in fit with the mounting seats.

[0015] In some embodiments of the present application, the mounting seat includes a receiving groove with an opening, the connecting part is inserted and fixed in the receiving groove, and the mounting part is inserted in the receiving groove and is located between the connecting part and the inner side wall of the receiving groove.

[0016] In some embodiments of the present application, a first limiting structure is provided on the inner side wall of the receiving groove, and a second limiting structure is provided on the mounting part. The first limiting structure cooperates with the second limiting structure to limit the displacement of the microwave shielding cover in the circumferential direction of the heating tube.

[0017] In some embodiments of the present application, one of the first limiting structure and the second limiting structure is a convex structure, and the other of the first limiting structure and the second limiting structure is a groove structure or a notch structure.

[0018] In some embodiments of the present application, the receiving groove includes a first abutting surface, the first abutting surface intersects with the length direction of the heating tube, and the mounting part abuts against the first abutting surface.

[0019] In some embodiments of the present application, along the length direction of the heating tube, the receiving groove includes a second abutting surface, the second abutting surface intersects with the length direction of the heating tube. Along the length direction of the heating tube, the first abutting surface is located between the second abutting surface and the opening, and a partial body of the connecting part abuts against the second abutting surface.

[0020] In some embodiments of the present application, the mounting seat further includes a through hole. Along the length direction of the heating tube, the through hole is communicated with the receiving groove. The heating tube further includes a wiring part electrically connected to the heating element, and the wiring part passes through the through hole and protrudes outside the mounting seat.

[0021] In some embodiments of the present application, the microwave shielding cover includes a transmission area, which is disposed opposite to the heating part. Along the length direction or circumferential direction of the heating tube, the transmission area covers at least part of the heating part. The transmission area includes at least one through hole, and the maximum opening size of any through hole is less than one quarter of the wavelength of the microwave emitted by the microwave cooking appliance.

[0022] A second aspect of the present application provides a heating assembly, which includes the heating element as described above.

[0023] When the heating assembly in the present application is used in a microwave cooker, during the process of heating the food in the cooking cavity by using the microwave and the heating tube of the heating element simultaneously, the heat of the heating tube is radiated into the cooking cavity through the microwave shielding cover to achieve heating of the food in the cooking cavity. The microwave in the cooking cavity cannot reach the position of the heating tube under the shielding of the microwave shielding cover, thereby reducing the problem of arcing that occurs when the heating tube is used in a microwave environment, and thus improving the safety during use.

[0024] A third aspect of the present application provides a microwave cooking appliance, which includes the heating assembly as described above.

[0025] For the microwave cooking appliance according to the present application, during the process of heating the food in the cooking cavity by using the microwave and the heating tube in the heating assembly simultaneously, the heat of the heating tube is radiated into the cooking cavity through the microwave shielding cover to achieve heating of the food in the cooking cavity. The microwave in the cooking cavity cannot reach the position of the heating tube under the shielding of the microwave shielding cover, thereby reducing the problem of arcing that occurs when the heating tube is used in a microwave environment, and thus improving the safety during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] By reading the following detailed description of the preferred embodiments, various other advantages and benefits will become clear to those of ordinary skill in the art. The drawings are only for the purpose of showing the preferred embodiments and are not considered to be a limitation of the present application. Moreover, throughout the drawings, the same reference numerals are used to represent the same components. In the drawings:

[0027] Figure 1 Schematically shows a structural diagram of a microwave cooking appliance according to an embodiment of the present application;

[0028] Figure 2 Schematically shows a structural diagram of a heating element according to an embodiment of the present application;

[0029] Figure 3 For Figure 2 an exploded structural diagram of the heating element shown in;

[0030] Figure 4 is Figure 3 a schematic structural view of the microwave shielding cover shown in

[0031] Figure 5 is Figure 4 a schematic structural view of another perspective of the microwave shielding cover shown in

[0032] Figure 6 is Figure 4 a schematic cross-sectional structural view of the microwave shielding cover shown in

[0033] Figure 7 is Figure 3 a schematic structural view of the mounting base shown in

[0034] Figure 8 is Figure 7 a schematic structural view of another perspective of the mounting base shown in

[0035] Figure 9 is Figure 3 a schematic structural view of the heating tube shown in

[0036] Figure 10 a graph of the central temperature and heating duration of a microwave cooking appliance at different porosities.

[0037] The reference numerals are as follows:

[0038] 100, microwave cooking appliance;

[0039] 10, box body;

[0040] 20, door body;

[0041] 30, heating assembly;

[0042] 31, heat insulation cover;

[0043] 32, heating element;

[0044] 321, heating tube;

[0045] 3211, heating part; 3212, connecting part; 32121, first limiting part; 3213, wiring part;

[0046] 322, mounting base;

[0047] 3221, receiving groove; 3222, opening; 3223, first abutting surface; 3224, second abutting surface; 3225, second limiting part; 3226, first limiting structure; 3227, through hole; 3228, communication hole;

[0048] 323, microwave shielding cover;

[0049] 3231. Transmission area; 32311. Through hole; 3232. Reflection area; 3233. Second limiting structure; 3234. Mounting part;

[0050] x. The length direction of the heating tube. Detailed implementation manners

[0051] The exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided so that the present disclosure can be more thoroughly understood and the scope of the present disclosure can be fully conveyed to those skilled in the art.

[0052] It should be understood that the terms used herein are for the purpose of describing specific exemplary embodiments only and are not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms "a", "an", and "the" as used herein may also include the plural forms. The terms "comprising", "including", "containing", and "having" are inclusive and thus specify the presence of the stated features, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring them to be performed in the particular order described or illustrated, unless the order of performance is explicitly stated. It should also be understood that additional or alternative steps may be used.

[0053] Although the terms first, second, third, etc. may be used herein to describe multiple elements, components, regions, layers, and / or sections, these elements, components, regions, layers, and / or sections should not be limited by these terms. These terms may be used only to distinguish one element, component, region, layer, or section from another. Unless the context clearly indicates otherwise, terms such as "first" and "second" and other numerical terms used herein do not imply an order or sequence. Thus, the first element, component, region, layer, or section discussed below may be referred to as the second element, component, region, layer, or section without departing from the teachings of the exemplary embodiments.

[0054] For ease of description, spatial relative relationship terms may be used in the text to describe the relationship of one element or feature shown in the figure with respect to another element or feature. These relative relationship terms are, for example, "inner", "outer", "inner side", "outer side", "below", "beneath", "above", "over", etc. Such spatial relative relationship terms are intended to include different orientations of the device during use or operation in addition to the orientations depicted in the figure. For example, if the device in the figure is flipped, an element described as "below" or "beneath" other elements or features will then be oriented as "above" or "over" other elements or features. Thus, the exemplary term "below" can include both upper and lower orientations. The device may be oriented otherwise (rotated 90 degrees or in other directions) and the spatial relative relationship descriptors used in the text are interpreted accordingly.

[0055] As Figures 1 to 10 shown, according to an embodiment of the present application, a heating element 32 is provided, which includes a mounting base 322, a microwave shielding cover 323, and a heating tube 321.

[0056] Among them, the heating tube 321 includes a heating tube 321 having a heating element, the heating element being a graphite heating element or a carbon fiber heating element. The heating tube 321 is connected to the mounting base 322, and the microwave shielding cover 323 cooperates with the mounting base 322 and covers the outside of the heating tube 321.

[0057] It should be understood that the heating element in the heating tube 321 is set as a graphite heating element or a carbon fiber heating element, so that the heating tube 321 has the advantages of fast heating rate, high light intensity, good dominant effect, strong thermal stability, etc. However, the heating tube 321 is in the microwave environment emitted by the microwave cooking appliance (the frequency of the microwave emitted by the microwave cooking appliance is generally between 2000 MHz and 300 MHz). Since both the graphite heating element and the carbon fiber heating element contain carbon elements, the heating tube 321 will have a problem of arcing when operating.

[0058] In the present application, the microwave shielding cover 323 refers to a component that has a shielding effect on microwaves, that is, when microwaves reach the microwave shielding cover 323, the microwave shielding cover 323 can reflect the microwaves to prevent the microwaves from passing through the microwave shielding cover 323 for propagation.

[0059] When the heating tube 321 is covered by the microwave shielding cover 323, the heating tube 321 is inside the microwave shielding cover 323. When the heating element 32 is in a microwave environment, the microwave shielding cover 323 separates the heating tube 321 from the microwaves, so that the microwaves cannot reach the position of the heating tube 321.

[0060] When the heating element 32 in the present application is used in the microwave cooking appliance 100, during the process of heating the food in the cooking cavity by using microwave and the heating tube 321 simultaneously, the heat of the heating tube 321 is radiated into the cooking cavity through the microwave shielding cover 323 to heat the food in the cooking cavity. The microwave in the cooking cavity cannot reach the position of the heating tube 321 under the shielding of the microwave shielding cover 323, thereby reducing the problem of arcing that occurs when the heating tube 321 is used in a microwave environment, and thus improving the safety during use.

[0061] It should be noted that, in the present application, the microwave shielding cover 323 can be a metal part or a non-metal part. When the microwave shielding cover 323 is a metal part, the metal part can be a stainless steel part, etc. When the microwave shielding cover 323 is a non-metal part, the non-metal part can be ceramics, etc.

[0062] In addition, the shape of the microwave shielding cover 323 can be consistent with the shape of the heating tube 321, or can be inconsistent with the shape of the heating tube 321. In the present application, the shape of the microwave shielding cover 323 is approximately consistent with the shape of the heating tube 321, so that on the basis of realizing the covering of the heating tube 321 by the microwave shielding cover 323, the overall volume of the heating element 32 can be effectively reduced, which is convenient for the layout and installation of the heating element 32 during use.

[0063] Furthermore, in the present application, the heating tube 321 is in a columnar structure. The extending direction of the columnar structure is the length direction x of the heating tube 321. At the same time, the heating tube 321 has a central axis, and the central axis is arranged along the length direction x of the heating tube 321. The direction around the central axis is the circumferential direction of the heating tube 321.

[0064] In some embodiments of the present application, as Figure 2 and Figure 3 shown, two mounting seats 322 are provided on the heating tube 321. Among them, the two mounting seats 322 are spaced apart in the length direction x of the heating tube 321, and the two mounting seats 322 are respectively matched with the microwave shielding cover 323.

[0065] In the present application, the heating tube 321 and the mounting seat 322 are connected to each other. When the heating element 32 is used in the microwave cooking appliance 100, the mounting seat 322 is connected and fixed to the structural member of the microwave cooking appliance 100 to realize the installation and fixation of the heating element 32.

[0066] Specifically, two mounting seats 322 are respectively mounted on the heating tube 321 and respectively cooperate with the microwave shielding cover 323. By providing two mounting seats 322, on the one hand, when the heating element 32 is used on the microwave cooking appliance 100, the connection positions between the heating element 32 and the structural members of the microwave cooking appliance 100 can be increased, so that the connection strength and stability of the heating element 32 can be improved. On the other hand, the cooperation positions of the microwave shielding cover 323 can be increased, thereby improving the strength and stability of the microwave shielding cover 323.

[0067] It should be noted that the two mounting seats 322 are spaced apart in the length direction x of the heating tube 321. Among them, the connection positions of the mounting seats 322 on the heating tube 321 can be the ends of the heating tube 321 or the body between the two ends.

[0068] In some embodiments of the present application, as Figure 2 , Figure 3 and Figure 9 shown, the heating tube 321 includes a connecting portion 3212 and a heating portion 3211. Among them, the heating element is arranged inside the heating portion 3211. The number of connecting portions 3212 is two. Along the length direction x of the heating tube 321, one connecting portion 3212 is respectively mounted on the opposite ends of the heating tube 321, and one mounting seat 322 is respectively connected to each connecting portion 3212.

[0069] Specifically, the two connecting portions 3212 are respectively connected to the opposite ends of the heating portion 3211 along the length direction x of the heating tube 321, and one mounting seat 322 is mounted and fixed on each connecting portion 3212. The microwave shielding cover 323 covers the outside of the heating tube 321 and respectively cooperates with the two mounting seats 322. At this time, the microwave shielding cover 323 can effectively cover the heating portion 3211 with the heating element, further reducing the situation of microwave transmission to the position of the heating element, and thus further reducing the sparking problem of the heating element 32 in the microwave environment.

[0070] It should be understood that when the heating element 32 is heating, the heating element located inside the heating portion 3211 is energized. The heating element is a graphite heating element or a carbon fiber heating element, which has a relatively high resistance. After being energized, the heating element will emit light and heat. The heat generated by the heating element can be radiated through the microwave shielding cover 323 to realize the heating and cooking of food. Along the length direction x of the heating tube 321, the two connecting portions 3212 are connected to the two opposite ends of the heating portion 3211 and are connected to the microwave shielding cover 323 through the mounting seats 322, thereby reducing the obstacles between the heating portion 3211 and the microwave shielding cover 323, and further improving the thermal efficiency of the heating element 32.

[0071] In the present application, the heating part 3211 includes a glass tube, the heating element is disposed inside the glass tube, and two connection parts 3212 are respectively connected and fixed to both ends of the glass tube. Among them, the glass tube needs to be evacuated so that the heating element can be in an environment approximating a vacuum or an inert gas is filled in the vacuum tube, thereby reducing oxidation and other reactions that occur during the heating process of the heating element.

[0072] In addition, the connection part 3212 can be a metal part (such as a stainless steel part, etc.) or a non-metal part (such as a ceramic part, etc.), and the connection method with the glass tube is bonding or clamping, etc.

[0073] It should be noted that in the present application, the fitting methods between the microwave shielding cover 323 and the mounting base 322 include plug-in fitting, snap-fit, welding fitting, fastener connection fitting, or bonding fitting, etc.

[0074] In some embodiments of the present application, as Figure 2 shown, the fitting method between the microwave shielding cover 323 and the mounting base 322 includes plug-in fitting.

[0075] Specifically, the heating tube 321 includes a connection part 3212 and a heating part 3211. Among them, the heating element is disposed inside the heating part 3211. The number of connection parts 3212 is two. Along the length direction x of the heating tube 321, one connection part 3212 is respectively installed at opposite ends of the heating tube 321, and a mounting base 322 is respectively connected to each connection part 3212.

[0076] The microwave shielding cover 323 includes two mounting parts 3234. Along the length direction x of the heating tube 321, the two mounting parts 3234 are respectively disposed at opposite ends of the microwave shielding cover 323. Among them, when the microwave shielding cover 323 is fitted with the mounting base 322, the fitting method between the mounting base 322 and the mounting part 3234 of the microwave shielding cover 323 is plug-in.

[0077] The plug-in fitting method between the microwave shielding cover 323 and the mounting base 322 has a simple structure and is convenient for assembly. In addition, the structure of the plug-in fitting can achieve the superposition of structures at the plug-in position, thereby increasing the structural strength of the connection position and improving the overall structural stability of the heating member 32.

[0078] It should be noted that when the microwave shielding cover 323 is plug-in fitted with the mounting base 322, during the implementation process, the mounting part 3234 of the microwave shielding cover 323 can be plugged into the inside of the mounting base 322, or a part of the structure of the mounting base 322 can be plugged into the inside of the mounting part 3234.

[0079] In some embodiments of the present application, as Figure 7As shown, a receiving groove 3221 is formed in the mounting portion 3234, and the receiving groove 3221 has an opening 3222. When the heating element 32 is assembled, the connecting portion 3212 of the heating tube 321 is inserted into the interior of the receiving groove 3221 through the opening 3222 of the receiving groove 3221. The microwave shielding cover 323 is sleeved outside the heating tube 321, and the mounting portion 3234 of the microwave shielding cover 323 is also inserted into the interior of the receiving groove 3221 through the opening 3222 of the receiving groove 3221. At this time, the mounting portion 3234 is disposed between the inner side wall of the receiving groove 3221 and the connecting portion 3212.

[0080] The connecting portion 3212 of the heating tube 321 and the mounting portion 3234 of the microwave shielding cover 323 are respectively inserted into the receiving groove 3221 of the mounting base 322, and the mounting base 322 can be used to protect the ends of the heating tube 321 and the microwave shielding cover 323, so as to reduce the damage caused by external impact to the heating tube 321 and the microwave shielding cover 323.

[0081] In addition, the heating tube 321 is completely wrapped by the mounting base 322 and the microwave shielding cover 323, so as to effectively protect the heating tube 321, reduce the impact of external factors on the heating tube 321, and further reduce the possibility of damage to the heating tube 321.

[0082] In addition, in the present application, the mounting base 322 is a heat-insulating material member, and the heat-insulating material member is a poor conductor of heat, such as ceramics. The mounting base 322 is set as a heat-insulating material member, so as to reduce the heat transfer of the heating element 32 through the mounting base 322 during use. Furthermore, when the heating element 32 is applied to the microwave cooking appliance 100, the possibility of the heat of the heating element 32 being transferred to other structural members can be reduced, and the situation that the heat of the heating element 32 damages other structural members of the microwave cooking appliance 100 is reduced.

[0083] It should be understood that there are two mounting seats 322. Along the length direction x of the heating tube 321, there are two connecting parts 3212 of the heating tube 321, and there are two mounting parts 3234 of the microwave shielding cover 323. When assembling the heating member 32, first insert one connecting part 3212 of the heating tube 321 into the receiving groove 3221 of one mounting seat 322, then sleeved the cylindrical microwave shielding cover 323 outside the heating tube 321 (the inner side wall of the microwave shielding cover 323 is spaced from the outer surface of the heating tube 321) and make the mounting part 3234 of the microwave shielding cover 323 inserted into the receiving groove 3221 of one mounting seat 322, and then sleeve the other mounting seat 322 on the other mounting part 3234 of the heating tube 321 and the other mounting part 3234 of the microwave shielding cover 323. Wherein, the connecting part 3212 and the mounting seat 322 are fixedly connected, and the connection and fixation methods include but are not limited to clamping or bonding. The microwave shielding cover 323 is clamped between the two mounting seats 322, and the microwave shielding cover 323 and the two mounting seats 322 can be connected (injecting high-temperature glue between them) or not connected.

[0084] In some embodiments of the present application, such as Figure 2 , Figure 3 , Figure 5 and Figure 7 shown, there are two mounting seats 322. Each mounting seat 322 is provided with a receiving groove 3221 having an opening 3222, and a first limiting structure 3226 is provided on the inner side wall of the receiving groove 3221. Along the length direction x of the heating tube 321, there are two connecting parts 3212 of the heating tube 321, and there are two mounting parts 3234 of the microwave shielding cover 323. Each mounting part 3234 is provided with a second limiting structure 3233.

[0085] When assembling the heating member 32, insert one connecting part 3212 of the heating tube 321 into the receiving groove 3221 of one mounting seat 322, then sleeve the cylindrical microwave shielding cover 323 outside the heating tube 321, make the mounting part 3234 of the microwave shielding cover 323 inserted into the receiving groove 3221 of one mounting seat 322, and the second limiting structure 3233 and the first limiting structure 3226 cooperate with each other. Then sleeve the other mounting seat 322 on the other mounting part 3234 of the heating tube 321 and the other mounting part 3234 of the microwave shielding cover 323 (the second limiting structure 3233 of the mounting part 3234 of the microwave shielding cover 323 and the first limiting structure 3226 of the receiving groove 3221 of the mounting seat 322 cooperate with each other), and finally fixedly connect the connecting part 3212 and the mounting seat 322. The microwave shielding cover 323 is clamped between the two mounting seats 322.

[0086] Among them, along the circumferential direction of the heating tube 321, the first limiting structure 3226 and the second limiting structure 3233 in the mating state can limit the displacement of the microwave shielding cover 323, that is, can limit the rotation of the microwave shielding cover 323 relative to the heating tube 321, so as to effectively maintain the installation position of the microwave shielding cover 323 and reduce the situation that the heating efficiency of the heating element 32 is affected by the rotation of the microwave shielding cover 323 relative to the heating tube 321.

[0087] It should be noted that in the present application, the first limiting structure 3226 and the second limiting structure 3233 are structures in concave-convex fit, that is, they are mutually embedded, and the limiting function is realized by the way of mutual embedding. The structure of mutual embedding is simple, convenient for processing and manufacturing, and can effectively reduce the manufacturing cost of the heating element 32.

[0088] In some embodiments of the present application, as Figure 2 shown, the microwave shielding cover 323 and the mounting base 322 are mutually inserted and mated. Among them, the mounting portion 3234 of the microwave shielding cover 323 is inserted into the receiving groove 3221 of the mounting base 322, and the first limiting structure 3226 located on the inner side wall of the receiving groove 3221 and the second limiting structure 3233 located on the mounting portion 3234 cooperate with each other to limit the rotation of the microwave shielding cover 323 relative to the heating tube 321. Among them, one of the first limiting structure 3226 and the second limiting structure 3233 is a convex structure, and the other is a concave groove structure or a notch structure.

[0089] Specifically, when the concave groove structure or the notch structure is formed on the inner side wall of the installation groove, the concave groove structure or the notch structure is arranged in communication with the opening 3222 of the receiving groove 3221. When the concave groove structure or the notch structure is formed on the mounting portion 3234 of the microwave shielding cover 323, the concave groove structure or the notch structure is arranged in communication with the end of the mounting portion 3234. When the convex structure is formed on the inner side wall of the receiving groove 3221, the convex structure protrudes from the inner side wall of the receiving groove 3221. When the convex structure is formed on the mounting portion 3234, the convex structure protrudes on the outer peripheral surface of the convex structure.

[0090] Taking the first limiting structure 3226 as a protruding structure and the second limiting structure 3233 as a notch structure as an example, the notch structure is formed on the outer peripheral surface of the mounting portion 3234 of the microwave shielding cover 323 and is set through the end of the mounting portion 3234. The notch structure is extended along the length direction x of the heating tube 321, and the protruding structure is formed on the inner side wall of the receiving groove 3221 of the mounting seat 322. During assembly, the notch structure and the protruding structure are aligned, and the mounting portion 3234 is inserted into the receiving groove 3221 from the opening 3222 of the receiving groove 3221. During the insertion process, the protruding structure slides into the notch structure of the mounting portion 3234 to achieve the interlocking installation between the two. When the protruding structure abuts against the closed end of the notch structure (the end away from the through end of the notch structure), the microwave shielding cover 323 is installed in place.

[0091] In some embodiments of the present application, Figure 7 and Figure 9 As shown, a receiving groove 3221 is provided on the mounting seat 322, and the receiving groove 3221 has an opening 3222. The mounting portion 3234 of the microwave shielding cover 323 is inserted into the receiving groove 3221 through the opening 3222. A first abutting surface 3223 intersecting the length direction x of the heating tube 321 is provided in the receiving groove 3221. After the mounting portion 3234 of the microwave shielding cover 323 is installed in the receiving groove 3221, the mounting portion 3234 abuts against the first abutting surface 3223, and the mounting portion 3234 is limited by the first abutting surface 3223, thereby reducing the displacement of the microwave shielding cover 323 in the length direction x of the heating tube 321, so as to reduce the situation that the heating efficiency of the heating element 32 is affected by the movement of the microwave shielding cover 323 relative to the heating tube 321.

[0092] It should be noted that a first protrusion is provided in the receiving groove 3221, and a first abutting surface 3223 is formed on the first protrusion. The first abutting surface 3223 can be parallel to or angled with the plane of the opening 3222 of the receiving groove 3221. The side surface of the mounting portion 3234 abutting against the first abutting surface 3223 is adapted to the first abutting surface 3223.

[0093] In some embodiments of the present application, Figure 7 and Figure 9 As shown, a receiving groove 3221 is provided on the mounting seat 322, and the receiving groove 3221 has an opening 3222, and the mounting portion 3234 of the microwave shielding cover 323 is inserted into the receiving groove 3221 through the opening 3222. A first abutting surface 3223 and a second abutting surface 3224 are provided in the receiving groove 3221 and are arranged to intersect with the length direction x of the heating tube 321, and the first abutting surface 3223 is located between the second abutting surface 3224 and the opening 3222 of the receiving groove 3221.

[0094] The heating tube 321 and the microwave shielding cover 323 are respectively inserted into the receiving groove 3221 through the openings 3222. The mounting portion 3234 of the microwave shielding cover 323 abuts against the first abutting surface 3223, and the connecting portion 3212 of the heating tube 321 abuts against the second abutting surface 3224. The first abutting surface 3223 and the second abutting surface 3224 are used to limit the mounting portion 3234 and the connecting portion 3212 respectively, thereby reducing the displacement of the microwave shielding cover 323 and the heating tube 321 in the length direction x of the heating tube 321, and further reducing the situation that the heating efficiency of the heating member 32 is affected due to the movement of the microwave shielding cover 323 or the heating tube 321.

[0095] It should be noted that a second protruding portion is provided in the receiving groove 3221, and the second abutting surface 3224 is formed on the second protruding portion. Wherein, the second abutting surface 3224 can be parallel to the plane of the opening 3222 of the receiving groove 3221 or be arranged at an angle. The side surface of the connecting portion 3212 that abuts against the second abutting surface 3224 is adapted to the first abutting surface 3223.

[0096] In addition, a first limiting portion 32121 is provided on the connecting portion 3212 of the heating tube 321, and a second limiting portion 3225 is provided on the second protruding portion. Wherein, the first limiting portion 32121 is a first plane formed on the outer peripheral surface of the connecting portion 3212, and the first plane communicates with the end of the connecting portion 3212. The second limiting portion 3225 is a second plane formed on the second protruding portion, and the second plane intersects with the second abutting surface 3224. When the connecting portion 3212 is inserted into the inside of the receiving groove 3221, the first plane of the connecting portion 3212 is aligned with the second plane in the receiving groove 3221, and then the connecting portion 3212 is inserted into the inside of the receiving groove 3221 from the opening 3222. When the connecting portion 3212 is inserted in place, a part of the body of the connecting portion 3212 abuts against the second abutting surface 3224, and another part of the body of the connecting portion 3212 is received in the receiving space formed by the second protruding portion and the inner wall of the receiving groove 3221, and the first plane and the second plane are attached to each other. By using the fitting arrangement of the first plane and the second plane, the rotation of the heating tube 321 relative to the mounting seat 322 can be restricted, and further the situation that the heating efficiency is affected due to the rotation of the heating tube 321 can be reduced.

[0097] In some embodiments of the present application, such as Figure 2 and 7 to Figure 9 as shown, the heating tube 321 further includes a wiring portion 3213. The wiring portion 3213 is electrically connected to the heating element, and the wiring portion 3213 passes through the connecting portion 3212 of the heating tube 321 and is arranged outside. A through hole 3227 is formed in the mounting seat 322, and the through hole 3227 communicates with the inside of the receiving groove 3221 in the length direction x of the heating tube 321.

[0098] When the heating tube 321 is assembled, the connecting portion 3212 of the heating tube 321 is inserted into the receiving groove 3221 through the opening 3222, and the wiring portion 3213 protruding from the connecting portion 3212 passes through the receiving groove 3221 and the through hole 3227. When the mounting base 322 and the heating tube 321 are installed in place, part of the wiring portion 3213 protrudes outside the mounting base 322. By providing the wiring portion 3213, the electrical lead-out of the heating element is realized, thereby improving the wiring operation during the use of the heating member 32.

[0099] It should be noted that in the present application, the wiring portion 3213 is a flat metal part, and the shape of the through hole 3227 is adapted to the shape of the wiring portion 3213 to facilitate the passing out of the wiring portion 3213.

[0100] In addition, a communication hole 3228 is provided in the mounting base 322. The communication hole 3228 is communicated with the through hole 3227 and they are arranged relatively. When the heating tube 321 and the mounting base 322 are installed in place, a fastening member such as a screw passes through the connection hole and cooperates with the wiring portion 3213 located in the through hole to fix the wiring portion 3213 and the mounting base 322.

[0101] In some embodiments of the present application, as Figures 3 to 6 shown, a transmission area 3231 is provided on the microwave shielding cover 323. The transmission area 3231 is correspondingly arranged with the heating portion 3211 of the heating tube 321. Along the length direction x of the heating tube 321, the transmission area 3231 covers at least part of the heating portion 3211. Along the circumferential direction of the heating tube 321, the transmission area 3231 also covers at least part of the heating portion 3211. Among them, a through hole 32311 is provided in the transmission area 3231, and the number of the through holes 32311 is at least one. The maximum opening size of the through hole 32311 is less than one-fourth of the microwave wavelength.

[0102] Specifically, the microwave shielding cover 323 is sleeved outside the heating tube 321. The microwave shielding cover 323 can shield the heating tube 321 from microwaves, so that when the heating member 32 operates in a microwave environment, the problem of the heating element generating sparks can be reduced. Among them, a transmission area 3231 with a through hole 32311 is provided on the microwave shielding cover 323, and the opening size of the through hole 32311 is set, so as to reduce the shielding of the heating tube 321 by the microwave shielding cover 323, so that the heat generated during the operation of the heating tube 321 can be quickly released, and the heating efficiency of the heating member 32 is effectively improved.

[0103] It should be understood that the maximum opening size of the through-hole 32311 is set to be less than one-quarter of the wavelength of the microwave. When the microwave reaches the position of the through-hole 32311, the microwave cannot pass through the through-hole 32311 and reach the position of the heating tube 321, so as to reduce the problem of arcing of the heating element of the heating tube 321. At the same time, the heat generated when the heating tube 321 operates can be directly radiated to the outside of the microwave shielding cover 323 through the through-hole 32311, reducing the blockage of the microwave shielding cover 323 to the heat released by the heating tube 321.

[0104] It should be noted that in the present application, along the length direction x of the heating tube 321, the transmission region 3231 can cover all or part of the length of the heating tube 321. At the same time, along the circumferential direction of the heating tube 321, the transmission region 3231 can cover all or part of the circumferential surface of the heating tube 321. Whether in the length direction x of the heating tube 321 or in the circumferential direction of the heating tube 321, the larger the area of the heating tube 321 covered by the transmission region 3231, the worse the shielding of the heating tube 321, and more heat of the heating tube 321 can be radiated to the outside of the microwave shielding cover 323 through the through-hole 32311, so as to improve the heating efficiency of the heating member 32.

[0105] In the present application, the number of the through-holes 32311 can be 1, 2, 10, 50, 100, 300, 400, 500, 600, 800, 1000, etc. When the number of the through-holes 32311 is larger, the shielding of the heat of the heating tube 321 by the microwave shielding cover 323 is less. As the number of the through-holes 32311 increases, the heating efficiency of the heating member 32 can be improved.

[0106] In some embodiments of the present application, as Figures 3 to 6 shown, within the transmission region 3231, the number of the through-holes 32311 opened is at least two. Among them, all the through-holes 32311 are dispersedly arranged within the transmission region 3231. Among all the through-holes 32311, there is a spacing distance between any two adjacent through-holes 32311, and the spacing distance is greater than 0.5 mm.

[0107] Specifically, the number of the through-holes 32311 is set to be at least two, so as to increase the number of the through-holes 32311, increase the opening area on the microwave shielding cover 323, improve the permeability of the microwave shielding cover 323, and further reduce the shielding of the heating tube 321 on the basis of realizing microwave shielding, so that the heating efficiency of the heating member 32 can be further improved.

[0108] It should be understood that the distance between two adjacent through-holes 32311 can be 0.5 mm, 0.7 mm, 0.9 mm, 1 mm, 1.2 mm, 1.4 mm, 1.6 mm, 1.8 mm, 2 mm, etc. Among them, when the interval distance between two adjacent through-holes 32311 is smaller, the permeability of the shielding cover is higher; when the distance between two adjacent through-holes 32311 is larger, the structural strength of the shielding cover is higher.

[0109] In this application, the microwave shielding cover 323 is a metal part (such as a stainless-steel part), and the through-holes 32311 are formed on the shielding cover by stamping. At this time, the minimum distance between two adjacent through-holes 32311 is 1 mm to meet the requirements of punching processing, and at the same time, the microwave shielding cover 323 can have a certain structural strength, so that the protection performance of the microwave shielding cover 323 for the heating tube 321 can be improved.

[0110] In some embodiments of this application, as Figures 3 to 6 shown, a plurality of through-holes 32311 are formed in the projection area of the microwave shielding cover 323, and the plurality of through-holes 32311 are dispersedly arranged in the transmission area 3231. Among them, the porosity of the transmission area 3231 is m, and 0.5 ≤ m ≤ 0.8.

[0111] It should be understood that when the porosity in the transmission area 3231 is less than 0.5, the opening area in the transmission area 3231 is small at this time, and the improvement of the heating efficiency of the heating element 32 is limited. When the porosity in the transmission area 3231 is greater than 0.8, the opening area in the transmission area 3231 is large at this time, but the structural strength of the microwave shielding cover 323 becomes poor.

[0112] In this application, by setting the porosity of the transmission area 3231, on the basis of effectively shielding microwaves by the microwave shielding cover 323, the microwave shielding cover 323 can have good structural strength, thereby improving the protection performance of the microwave shielding cover 323 for the heating tube 321, and further reducing the situation where the heating tube 321 is damaged by impact.

[0113] In this application, the area of the transmission area 3231 is A all , the opening area of a single through-hole 32311 is A hole , the number of through-holes 32311 is n, and the porosity of the transmission area 3231 is B. Among them, B = n * A hole / A all , taking the transmission area 3231 as a rectangle and the through-hole 32311 as a circular hole as an example, A all = L * M, where L is one side length of the rectangular transmission area 3231, and M is the other side length of the rectangular transmission area 3231, Ahole = πr 2 , where r is the radius of the circular through-hole 32311.

[0114] It should be noted that in this application, the porosity m can take values of 0.5, 0.55, 0.6, 0.65, 0.7, 0.75, 0.8.

[0115] As Figure 10 shown, in Figure 10 , the horizontal axis is the time axis, the vertical axis is the temperature axis, m1 is 0.8, m2 is 0.6, m3 is 0.55, m4 is 0.5. By comparison, it can be seen that under the condition of heating to the same temperature, the larger the porosity, the shorter the time used.

[0116] In some embodiments of this application, as Figures 3 to 6 shown, a number of through-holes 32311 are provided on the transmission area 3231 of the microwave shielding cover 323. Among them, the number of through-holes 32311 forms multiple rows of hole groups. In each row of hole groups, the respective through-holes 32311 are arranged in a straight line. Each hole group is arranged along the length direction x of the heating tube. Among them, along the circumferential direction of the heating tube 321, the multiple rows of hole groups are arranged at intervals, and the adjacent two through-holes 32311 in the adjacent two rows of hole groups are arranged staggeredly. Specifically, the number of through-holes 32311 is arranged into multiple rows of hole groups, which is convenient for processing and manufacturing, so that the processing efficiency can be improved. At the same time, arranging the adjacent two through-holes 32311 in the adjacent two rows of hole groups staggeredly can further increase the porosity of the transmission area 3231, so that the heating efficiency of the heating element 32 can be further improved.

[0117] In some embodiments of this application, a number of through-holes 32311 are provided on the transmission area 3231 of the microwave shielding cover 323. Among them, the number of through-holes 32311 forms multiple rows of hole groups. In each row of hole groups, the respective through-holes 32311 are arranged in a straight line. Each hole group is arranged along the circumferential direction of the heating tube. Among them, along the length direction x of the heating tube 321, the multiple rows of hole groups are arranged at intervals, and the adjacent two through-holes 32311 in the adjacent two rows of hole groups are arranged staggeredly. Specifically, the number of through-holes 32311 is arranged into multiple rows of hole groups, which is convenient for processing and manufacturing, so that the processing efficiency can be improved. At the same time, arranging the through-holes 32311 in the adjacent two rows of hole groups staggeredly can further increase the porosity of the transmission area 3231, so that the heating efficiency of the heating element 32 can be further improved.

[0118] In some embodiments of the present application, a transmission area 3231 and a reflection area 3232 are provided on the microwave shielding cover 323. Among them, the transmission area 3231 and the reflection area 3232 are arranged opposite to each other, and along the circumferential direction of the heating tube 321, the opposite sides of the reflection area 3232 are respectively connected to the transmission area 3231.

[0119] It should be understood that the side of the reflection area 3232 facing the heating tube 321 is a reflection surface, and the reflection surface has a reflection function. When the thermal radiation light generated by the heating element irradiates onto the reflection surface, the reflection surface reflects the radiation light to change the propagation direction of the radiation light. Since the reflection area 3232 and the transmission area 3231 are arranged opposite to each other, the radiation light reflected by the reflection surface can radiate out of the microwave shielding cover 323 through the through hole 32311 of the transmission area 3231.

[0120] Specifically, when the heating member 32 is applied to the microwave cooking appliance 100, the side of the microwave shielding cover 323 having the transmission area 3231 is communicated with the cooking cavity and is arranged opposite to the food to be heated. When the heating member 32 operates, the heating element in the heating tube 321 is energized, and the energized heating element emits light and heat. The heat generated by the heating element is quickly radiated into the cooking cavity through the through hole 32311 of the transmission area 3231 to heat and cook the food. By providing the reflection area 3232, the heat released by the heating element on one side of the reflection area 3232 is reflected to the side of the transmission area 3231 through the reflection area 3232, so as to be radiated into the cooking cavity through the through hole 32311 of the transmission area 3231, so that more heat generated by the heating tube 321 is quickly radiated into the cooking cavity, thereby further improving the heating efficiency of the heating member 32.

[0121] It should be noted that a reflection coating (such as a silver coating, etc.) can also be provided on the reflection surface, and the reflection ability of the reflection surface is further improved by using the reflection coating, which can further improve the heating efficiency of the heating member 32.

[0122] In some embodiments of the present application, as Figure 6 shown, a transmission area 3231 and a reflection area 3232 are provided on the microwave shielding cover 323. Among them, along the circumferential direction of the heating tube 321, the opposite sides of the reflection area 3232 are respectively connected to the transmission area 3231, and in the circumferential direction of the heating tube 321, the value of the central angle formed by the transmission area 3231 is in the range of 100° to 300°.

[0123] Specifically, when the heating element 32 operates, the heating element within the heating tube 321 is energized. After being energized, the heating element emits light and heat, and the heat generated by the heating element is rapidly radiated to the cooking cavity through the through holes 32311 of the transmission area 3231 to heat and cook the food. Along the circumferential direction of the heating tube 321, the larger the coverage range of the transmission area 3231, the worse the heat blocking effect of the microwave shielding cover 323 on the heat of the heating tube 321, that is, the more heat directly radiated from the heating tube 321 to the outside of the microwave shielding cover 323.

[0124] When the heating element 32 is used in the microwave cooking appliance 100, the cooking cavity is provided on one side of the heating element 32, and the transmission area 3231 is communicatively arranged with the cooking cavity. Therefore, by controlling the area covered by the transmission area 3231 in the circumferential direction of the heating tube 321, directional radiation of the heat of the heating tube 321 can be achieved, thereby reducing heat loss and effectively improving the heating efficiency of the heating element 32.

[0125] In this application, the central angle formed by the transmission area 3231 in the circumferential direction of the heating tube 321 is a (the central angle formed by the reflection area 3232 in the circumferential direction of the heating tube 321 is b, b = 360° - a), where 100° ≤ a ≤ 300°. When the heating element 32 is used in the microwave cooking appliance 100, the heat radiation area of the heating element 32 can be increased, and on the basis of meeting the improvement of heating efficiency, energy consumption can be effectively reduced.

[0126] It should be noted that the specific value of a can be 100°, 110°, 120°, 130°, 140°, 150°, 160°, 170°, 180°, 181°, 182°, 183°, 184°, 185°, 187°, 190°, 200°, 210°, 230°, 240°, 250°, 260°, 270°, 280°, 290°, 300°.

[0127] In some embodiments of this application, the shape of the through hole 32311 includes but is not limited to circular, triangular, elliptical, quadrilateral, pentagonal, etc. By setting the shape of the through hole 32311, the through hole 32311 can be set according to the specific application scenario to meet the actual use requirements.

[0128] It should be understood that in the present application, when the number of through holes 32311 in the transmission region 3231 is multiple, the shapes of the through holes 32311 can be completely the same, partially the same, or completely different. When the shapes of the through holes 32311 are completely the same, it is convenient for processing and can improve the processing efficiency. When the shapes of the through holes 32311 are partially the same or completely different, the porosity of the transmission region 3231 can be increased by changing the shapes of the through holes 32311, so as to enhance the permeability of the transmission region 3231.

[0129] In some embodiments of the present application, as Figures 3 to 6 shown, the transmission region 3231 of the microwave shielding cover 323 includes through holes 32311, the shapes of the through holes 32311 are set to be circular, the diameter of the through holes 32311 is d, wherein, 3mm ≤ d ≤ 8mm.

[0130] Specifically, setting the through holes 32311 to be circular is convenient for processing and manufacturing. In addition, setting the diameter of the circular through holes 32311 between 3mm and 8mm can effectively increase the opening area on the basis of satisfying microwave shielding, and then enhance the porosity of the transmission region 3231, so as to improve the heating efficiency of the heating element 32.

[0131] It should be noted that the specific values of d can be 3mm, 3.5mm, 4mm, 4.5mm, 5mm, 5.5mm, 6mm, 6.5mm, 7mm, 7.5mm, 8mm.

[0132] In addition, when the number of through holes 32311 is multiple, the diameters of the through holes 32311 can be all the same, partially the same, or all different. When the diameters of the through holes 32311 are completely the same, it is convenient for processing and can improve the processing efficiency. When the diameters of the through holes 32311 are partially the same or completely different, the porosity of the transmission region 3231 can be increased by changing the diameters of the through holes 32311, so as to enhance the permeability of the transmission region 3231.

[0133] In some embodiments of the present application, along the axial direction perpendicular to the heating tube 321, the cross-section of the microwave shielding cover 323 is an annular structure, and the annular structure includes but is not limited to a triangle, a quadrilateral, a pentagon, a circle or an ellipse.

[0134] Specifically, by setting the annular structure, the microwave shielding cover 323 can be set according to the specific application scenario to meet the actual use requirements.

[0135] It should be understood that the shape of the annular structure is consistent with the cross-sectional shape of the heating tube 321 (the cross-section along the axial direction perpendicular to the heating tube 321), so that the microwave shielding cover 323 can be better adapted to the heating tube 321. For example, the cross-sectional shape of the heating tube 321 (the cross-section along the axial direction perpendicular to the heating tube 321) is circular, and the annular structure is circular.

[0136] In some embodiments of the present application, the heating tube 321 and the microwave shielding cover 323 are coaxially arranged. By coaxially arranging the two, in the direction perpendicular to the length direction x of the heating tube 321, the heating tube 321 and the microwave shielding cover 323 are equidistantly arranged, so as to reduce the situation that the microwave shielding cover 323 is locally deformed and damages the heating tube 321.

[0137] In some embodiments of the present application, the wall thickness of the microwave shielding cover 323 is greater than or equal to 1 mm. By setting the microwave shielding cover 323, on the basis that the microwave shielding cover 323 satisfies microwave shielding, the overall weight can be effectively controlled, so that the overall weight of the heating member 32 can be effectively controlled.

[0138] It should be noted that, as Figure 6 shown, in the present application, the thickness of the microwave shielding cover 323 is d, where the value of d can be 1 mm, 1.5 mm, 2 mm, 2.5 mm, 3 mm, 3.5 mm, 4 mm.

[0139] As Figure 1 shown, a second aspect of the present application provides a heating assembly 30, and the heating assembly 30 includes the heating member 32 as described above.

[0140] When the heating assembly 30 in the present application is used in the microwave cooking appliance 100, during the process of simultaneously heating the food in the cooking cavity by using the microwave and the heating tube 321 of the heating member 32, the heat of the heating tube 321 is radiated into the cooking cavity through the microwave shielding cover 323 to heat the food in the cooking cavity, and the microwave in the cooking cavity cannot reach the position of the heating tube 321 under the shielding of the microwave shielding cover 323, thereby reducing the problem of arcing when the heating tube 321 is used in a microwave environment, and improving the safety during use.

[0141] It should be noted that the heating assembly 30 further includes a heat insulation cover 31, the heat insulation cover 31 has an installation space, and the heating member 32 is matched with the heat insulation cover 31, at least such that the part of the heating tube 321 with a heating body is arranged in the installation space. When the heating assembly 30 is used in the microwave cooking appliance 100, the heat insulation cover 31 is installed and fixed on the cabinet 10 of the microwave cooking appliance 100, and the open end of the heat insulation cover 31 is communicated with the cooking cavity in the cabinet 10 to heat and cook the food in the cooking cavity by energizing the heating tube 321.

[0142] As Figure 1 shown, a third aspect of the present application provides a microwave cooking appliance 100, and the microwave cooking appliance 100 includes a heating assembly 30 as described above.

[0143] In the microwave cooking appliance 100 according to the present application, during the process of simultaneously heating the food in the cooking cavity by using microwave and the heating tube 321 in the heating assembly 30, the heat of the heating tube 321 is radiated into the cooking cavity through the microwave shielding cover 323 to heat the food in the cooking cavity. The microwave in the cooking cavity cannot reach the position of the heating tube 321 under the shielding of the microwave shielding cover 323, thereby reducing the problem of arcing when the heating tube 321 is used in a microwave environment, and thus improving the safety during use.

[0144] It should be noted that, as Figure 1 shown, the microwave cooking appliance 100 further includes a box body 10 and a door body 20. Among them, a cooking cavity is provided on the box body 10, the cooking cavity has a loading and unloading opening, and the door body 20 is pivotally connected to the box body 10, and the opening or closing of the loading and unloading opening is realized by the pivoting of the door body 20 relative to the box body 10.

[0145] In the present application, the above-mentioned microwave cooking appliance may be a microwave oven or a microwave steam convection oven, etc. For the convenience of description, the present application only takes the microwave cooking appliance as a microwave oven as an example for illustration. For the structures of other parts of the microwave oven, please refer to the prior art, and the present application will not elaborate herein.

[0146] The above is only the preferred specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by the present application should be covered by the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A heating element for a microwave cooking appliance, characterized in that, The heating element includes: a heating tube, the heating tube includes a heating body, and the heating body is a carbon fiber heating body or a graphite heating body; a mounting base, the mounting base is connected to the heating tube; a microwave shielding cover, the microwave shielding cover covers the outside of the heating tube and cooperates with the mounting base.

2. The heating element according to claim 1, characterized in that, The number of the mounting bases is two. Along the length direction of the heating tube, the two mounting bases are arranged at intervals, and the microwave shielding cover cooperates with the two mounting bases respectively.

3. The heating element according to claim 2, wherein, The heating tube further includes a heating part and two connecting parts. Along the length direction of the heating tube, the two connecting parts are respectively connected to opposite ends of the heating part, and each connecting part is connected with one of the mounting bases, and the heating body is arranged inside the heating part.

4. The heating element according to claim 3, characterized in that, Along the length direction of the heating tube, the microwave shielding cover includes two oppositely arranged mounting parts, and the mounting parts are in plug-in fit with the mounting bases.

5. The heating element according to claim 4, characterized in that, The mounting base includes a receiving groove with an opening, the connecting part is inserted and fixed in the receiving groove, and the mounting part is inserted in the receiving groove and located between the connecting part and the inner side wall of the receiving groove.

6. The heating element according to claim 5, characterized in that, The inner side wall of the receiving groove is provided with a first limiting structure, and the mounting part is provided with a second limiting structure. The first limiting structure cooperates with the second limiting structure to limit the displacement of the microwave shielding cover in the circumferential direction of the heating tube.

7. The heating element according to claim 6, wherein One of the first limiting structure and the second limiting structure is a convex structure, and the other of the first limiting structure and the second limiting structure is a groove structure or a notch structure.

8. The heating element according to claim 5, characterized in that The receiving groove includes a first abutting surface, the first abutting surface intersects with the length direction of the heating tube, and the mounting part abuts against the first abutting surface.

9. The heating element according to claim 8, wherein Along the length direction of the heating tube, the receiving groove includes a second abutting surface, the second abutting surface intersects with the length direction of the heating tube, and along the length direction of the heating tube, the first abutting surface is located between the second abutting surface and the opening, and a part of the body of the connecting part abuts against the second abutting surface.

10. The heating element according to claim 9, characterized in that, The mounting base further includes a through hole. Along the length direction of the heating tube, the through hole is communicated with the receiving groove. The heating tube further includes a wiring part electrically connected to the heating body, and the wiring part passes through the through hole and protrudes outside the mounting base.

11. The heating element according to any one of claims 1 to 10, characterized in that, The microwave shielding cover includes a transmission area, the transmission area is oppositely arranged with the heating part, and along the length direction or the circumferential direction of the heating tube, the transmission area at least covers at least part of the heating part. The transmission area includes at least one through hole, and the maximum opening size of any through hole is less than one quarter of the wavelength of the microwave emitted by the microwave cooking appliance.

12. A heating component, characterized in that, The heating assembly includes the heating element according to any one of claims 1 to 11.

13. A microwave cooking appliance, characterized in that, The microwave cooking appliance includes the heating assembly according to claim 12.

Images