A cooking appliance

Abstract

The embodiment of the present application provides a cooking utensil, the cooking utensil has a cooking cavity, and the cooking utensil comprises a cavity wall, a partition plate, a microwave generating assembly and a waveguide channel. The cooking cavity is located in a space formed by the cavity wall, the cavity wall comprises a cavity bottom wall and a plurality of cavity side walls, the cavity bottom wall comprises a first recessed part, the first recessed part is concave downward, the first recessed part comprises a bottom wall, the bottom wall is provided with one or more first microwave feed inlets, and at least one cavity side wall is provided with one or more second microwave feed inlets. The partition plate is arranged in the first recessed part, the top surface of the partition plate is lower than the top surface of the first platform part, and a vacant space is formed between the bottom wall and the partition plate; the microwave generating assembly is used for generating microwaves. The waveguide channel is used for conducting the microwaves generated by the microwave generating assembly to the cooking cavity through the first microwave feed inlet and the second microwave feed inlet. Through the first recessed part arranged on the cavity bottom wall, the space in the cooking cavity can be improved, so that the cooking cavity can accommodate higher food.

Description

[0001] Cross-reference to related applications

[0002] This application is based on and claims priority to Chinese Patent Application No. 202521397588.9, filed on July 3, 2025, the entire contents of which are incorporated herein by reference. Technical Field

[0003] This application relates to the field of household appliance technology, and more particularly to a cooking appliance. Background Technology

[0004] Taking microwave ovens as an example, related technologies utilize waveguide assemblies to guide microwaves generated by magnetron assemblies into the cooking cavity, where microwaves cause the molecules in the food to vibrate, thus heating the food. However, waveguide assemblies and magnetron assemblies occupy a large amount of space, resulting in a small cooking cavity for heating food, which is difficult to meet user needs. Utility Model Content

[0005] In view of this, the present application aims to provide a cooking appliance that increases the space of the cooking cavity while keeping the overall size of the cooking appliance unchanged.

[0006] This application provides a cooking appliance, the cooking appliance having a cooking cavity, the cooking appliance comprising:

[0007] The cavity wall, wherein the cooking cavity is located within the space enclosed by the cavity wall, the cavity wall includes a cavity bottom wall and a plurality of cavity side walls, the cavity bottom wall includes a first recessed portion, the first recessed portion being recessed downward, the first recessed portion including a bottom wall, the bottom wall being provided with one or more first microwave feed inlets; at least one cavity side wall is provided with one or more second microwave feed inlets;

[0008] A partition is disposed in the first recess, the partition is used to place food, and an empty space is formed between the bottom wall and the partition;

[0009] Microwave generating assembly, used to generate microwaves;

[0010] A waveguide channel is used to conduct microwaves generated by the microwave generating component to the cooking cavity through the first microwave feed inlet and the second microwave feed inlet.

[0011] In some embodiments, the cavity bottom wall includes an annular first platform portion surrounding the outer periphery of the first recess portion, the first recess portion being recessed downward from the inner edge of the first platform portion;

[0012] The top surface of the partition is lower than the top surface of the first platform portion.

[0013] In some implementations, the projected area of ​​the first recess on the horizontal plane is not less than 1 / 2 of the projected area of ​​the cavity bottom wall.

[0014] In some implementations, the distance between the partition and the bottom wall is greater than 5 mm.

[0015] In some implementations, the distance between the partition and the bottom wall is 7mm to 12mm.

[0016] In some embodiments, the first recess includes a side wall disposed along the edge of the bottom wall, the side wall having a stepped surface, and the partition being supported on the stepped surface.

[0017] In some embodiments, the cavity wall includes a first cavity sidewall, and the microwave generating assembly is located on the side of the first cavity sidewall away from the cooking cavity;

[0018] The cooking appliance includes a first shell and a second shell connected to each other. The first shell is located on the side of the first cavity sidewall away from the cooking cavity, and the second shell is located on the side of the cavity bottom wall away from the cooking cavity. The first shell and the first cavity sidewall together enclose a portion of the waveguide channel, and the second shell and the cavity bottom wall together enclose another portion of the waveguide channel.

[0019] In some implementations, the bottom wall includes four quadrants, each quadrant having at least one of the first microwave feed inlets;

[0020] The four quadrants are four quadrants defined by two coordinate axes in a two-dimensional rectangular coordinate system.

[0021] In some implementations, the first microwave feed inlets corresponding to the four quadrants are arranged axially symmetrically with respect to the coordinate axes and / or centrally symmetrically with respect to the origin of the four quadrants.

[0022] In some embodiments, the cavity wall includes a first cavity sidewall, and the microwave generating assembly is located on the side of the first cavity sidewall away from the cooking cavity;

[0023] A portion of the first cavity sidewall is recessed in a direction away from the cooking cavity to form a second recessed portion, and the flat area of ​​the first cavity sidewall outside the second recessed portion is a non-recessed portion.

[0024] The area of ​​the second recessed portion is greater than the area of ​​the non-recessed portion when projected onto the plane containing the first cavity sidewall; or, the area of ​​the second recessed portion is not less than 50% of the area of ​​the first cavity sidewall.

[0025] In some embodiments, the second recess is provided with a plurality of heat dissipation holes; and / or, the second microwave feed inlet is located in the non-recessed portion.

[0026] In some embodiments, the cooking appliance includes a first shell portion and a second shell portion connected to each other, the first shell portion being located on the side wall of the first cavity away from the cooking cavity, and the second shell portion being located on the bottom wall of the cavity away from the cooking cavity;

[0027] The first housing portion and the non-recessed portion cooperate to enclose a portion of the waveguide channel. The microwave generating component is mounted on the first housing portion. The microwave generating component includes a microwave transmitting antenna that passes through the first housing portion and extends between the non-recessed portion and the first housing portion.

[0028] In some embodiments, the cooking appliance includes a transformer assembly for powering the microwave generating assembly;

[0029] The cavity wall includes a first cavity sidewall, the microwave generating assembly and the transformer assembly are both located on the side of the first cavity sidewall away from the cooking cavity, and the transformer assembly is disposed below the microwave generating assembly.

[0030] In some embodiments, the cooking appliance includes a fan, the cavity wall includes a first cavity sidewall, and both the microwave generating assembly and the fan are located on the side of the first cavity sidewall away from the cooking cavity;

[0031] In a horizontal projection, the first cavity sidewall and the microwave generating assembly are arranged along a first direction, and the fan and the microwave generating assembly are arranged along a second direction, with the first direction and the second direction being perpendicular.

[0032] In some embodiments, the cooking appliance includes a housing, which, when projected onto a plane perpendicular to the front-back direction of the cooking appliance, surrounds the outer periphery of the cavity wall. An annular airflow channel is formed between the inner surface of the housing and the outer surface of the cavity wall. The fan and the microwave generating assembly are both disposed on the airflow path of the airflow channel.

[0033] In some embodiments, the cavity wall includes a cavity top wall, the cooking appliance includes a heat insulation cover unit and a heating element, the heat insulation cover unit is disposed on the side of the cavity top wall away from the cooking cavity, and together with the cavity top wall forms an installation cavity, the cavity top wall has a plurality of through holes for communicating between the cooking cavity and the installation cavity, and the heating element is disposed in the installation cavity.

[0034] The cooking appliance of this application embodiment, by providing a first recess on the bottom wall of the cavity, can increase the space inside the cooking cavity, allowing the cavity to accommodate taller food items. Furthermore, no other components, such as metal antennas and drive motors, need to be installed in the empty space. Therefore, the empty space can be minimized, and the distance between the bottom wall of the first recess and the partition can be reduced, thereby increasing the space inside the cooking cavity without changing the size of the cooking appliance. In addition, the first and second microwave feed inlets distributed on different side walls of the cavity facilitate the feeding of microwaves from both vertical and horizontal directions to heat the food, improving heating uniformity and enhancing the cooking effect of the appliance. Attached Figure Description

[0035] Figure 1 This is a schematic diagram of the structure of a cooking utensil provided in an embodiment of this application;

[0036] Figure 2 for Figure 1 A cross-sectional view perpendicular to the front-back direction;

[0037] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0038] Figure 4 for Figure 1 A structural diagram omitting the outer shell;

[0039] Figure 5 for Figure 4 A cross-sectional view perpendicular to the front-back direction;

[0040] Figure 6 for Figure 5 Enlarged view of point B in the middle;

[0041] Figure 7 for Figure 4 A diagram from another perspective;

[0042] Figure 8 for Figure 4 A schematic diagram from another perspective;

[0043] Figure 9 for Figure 1 Internal structure diagram;

[0044] Figure 10 for Figure 9 Enlarged view of point C in the middle;

[0045] Figure 11 for Figure 9 A diagram from another perspective;

[0046] Figure 12 for Figure 9A partial structural diagram.

[0047] Explanation of reference numerals in the attached figures

[0048] 1. Cooking appliance; 10. Cavity wall; 10a. Cooking cavity; 10a1. Loading / unloading port; 11. Cavity bottom wall; 11a. First recessed portion; 11a1. Bottom wall; 11a1a. First microwave feed inlet; 11a2. Side wall; 11a2a. Stepped surface; 11b. First platform portion; 12. First cavity side wall; 12a. Second microwave feed inlet; 12b. Second recessed portion; 12b1. Heat dissipation hole; 12c. Non-recessed portion; 13. Cavity top wall; 13a. Through hole; 14. Partition; 14a. Empty space; 20. Microwave generating assembly; 30. Waveguide channel; 31. First shell portion; 32. Second shell portion; 40. Heat insulation cover unit; 40a. Mounting cavity; 50. Heating assembly; 60. Outer shell; 60a. Airflow channel; 70. Fan; 80. Transformer assembly. Detailed Implementation

[0049] 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.

[0050] 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.

[0051] 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.

[0052] 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.

[0053] This application provides a cooking utensil 1, please refer to... Figures 1 to 8 The cooking appliance 1 has a cooking cavity 10a, and the cooking appliance 1 includes a cavity wall 10, a partition 14, a microwave generating component 20, and a waveguide channel 30.

[0054] It should be noted that the specific type of cooking utensil 1 is not limited here.

[0055] For example, the cooking appliance 1 can be a microwave oven; different functions can also be integrated into the cooking appliance 1 according to user needs, such as a microwave oven, a microwave steam oven, etc., to improve ease of use. This application embodiment uses a microwave oven as an example to describe the cooking appliance 1.

[0056] Please refer to Figure 4 , Figures 6 to 8 The cooking cavity 10a is located within the space formed by the cavity wall 10. It is understood that the cooking cavity 10a can be used to hold food to be cooked.

[0057] For example, please refer to Figure 9 The cooking cavity 10a has a loading / unloading opening 10a1 on one side along the front-to-back direction. Understandably, food to be cooked can enter and exit the cooking cavity 10a through the loading / unloading opening 10a1.

[0058] For ease of understanding, in this embodiment, the side where the opening 10a1 is located is designated as the front side, and the side opposite to the opening 10a1 is designated as the rear side. The direction perpendicular to the front-back direction in the horizontal plane is designated as the left-right direction. The height direction of the cooking utensil 1 is designated as the up-down direction. The front-back direction, left-right direction, and height direction constitute a three-dimensional Cartesian coordinate system.

[0059] Please refer to Figure 1 The cavity wall 10 includes a top wall 13, a bottom wall 11, and multiple side walls. It should be noted that "top side" refers to the upper side, and "bottom side" refers to the lower side, such as... Figure 1 The directions pointed to by the two ends of the up and down arrows.

[0060] It should be noted that the cavity sidewall is the remaining part of the cavity wall 10 other than the cavity top wall 13 and the cavity bottom wall 11. For example, it can be the cavity wall 10 located on the left side of the cooking cavity 10a, or the cavity wall 10 on the right side, or the cavity wall 10 on the rear side, etc.

[0061] Please refer to Figure 9 and Figure 10 The bottom wall 11 of the cavity includes a first recessed portion 11a, which is recessed downwards. It can be understood that the downward recessed portion 11a helps to increase the internal space of the cooking cavity 10a (i.e., to increase the volume of the cooking cavity 10a).

[0062] The microwave generating component 20 is used to generate microwaves. Understandably, microwaves are used to heat food.

[0063] It should be noted that the specific structure of the microwave generating component 20 is not limited.

[0064] It should be noted that there is no limit to the specific frequency of microwaves. For example, the frequency of microwaves is 2.4 to 2.5 GHz (gigahertz, a unit of frequency).

[0065] Please refer to Figure 2 , Figure 3 and Figure 8 The first recess 11a includes a bottom wall 11a1, the bottom wall 11a1 is provided with one or more first microwave feed inlets 11a1a, and at least one cavity sidewall is provided with one or more second microwave feed inlets 12a. That is, at least one of the cavity wall on the left side of the cooking cavity 10a, the cavity wall 10 on the right side of the cooking cavity 10a, and the cavity wall 10 on the rear side of the cooking cavity 10a is provided with one or more second microwave feed inlets 12a.

[0066] The waveguide channel 30 is used to conduct the microwaves generated by the microwave generating component 20 to the cooking cavity 10a through the first microwave feed inlet 11a1a and the second microwave feed inlet 12a.

[0067] Understandably, when food is placed in the cooking cavity 10a for cooking, the microwaves radiated from the first microwave feed inlet 11a1a to the cooking cavity 10a can heat the food from the bottom, while the microwaves radiated from the second microwave feed inlet 12a to the cooking cavity 10a can heat food at a certain height, such as a glass containing milk. This allows for both rapid heating of the food and improved heating uniformity in the vertical direction, thus enhancing the cooking effect of the cooking appliance 1.

[0068] It should be noted that the number of first microwave feed inlets 11a1a can be one or more.

[0069] The number of second microwave feed inlets 12a can be one or more, and this application does not impose any limitation on this. In some embodiments, only one cavity sidewall may be provided with one or more second microwave feed inlets 12a. In other embodiments, one or more second microwave feed inlets 12a may be provided on each of the two cavity sidewalls. In still other embodiments, one or more second microwave feed inlets 12a may be provided on each of the three cavity sidewalls.

[0070] It should be noted that in the embodiments of this application, "multiple" refers to two or more.

[0071] Please refer to Figures 2 to 5The partition 14 is disposed within the first recess 11a. It is understood that the partition 14 has a certain structural strength and is capable of supporting the food and food container.

[0072] Please refer to Figure 2 and Figure 3 An empty space 14a is formed between the bottom wall 11a1 and the partition 14. The empty space 14a refers to unoccupied space, allowing microwaves from the first microwave feed inlet 11a1a to pass directly through the empty space 14a and the partition 14. It is understood that the fact that microwaves entering the empty space 14a can pass directly through the partition 14 means that there are no components within the empty space 14a that could obstruct microwave conduction, reducing microwave loss during entry into the cooking cavity 10a from the first microwave feed inlet 11a1a. Furthermore, the empty space also provides diffusion space for microwaves fed from the first microwave feed inlet, facilitating microwave dispersion and reducing localized overheating caused by microwave concentration.

[0073] It should be noted that in the prior art, in order to solve the problem of microwave uniformity, a motor and a microwave stirring antenna are installed below the bottom wall of the cavity. The microwave stirring antenna is located between the bottom wall of the cavity and the partition. Therefore, a large distance needs to be maintained between the bottom wall of the cavity and the partition to install the microwave stirring antenna. At the same time, a large space also needs to be made below the bottom wall of the cavity to install the motor. As a result, a large space needs to be reserved below the partition to install the motor and the stirring antenna. With the external dimensions of the cooking appliance remaining unchanged, the above design requires sacrificing the volume of the cooking cavity.

[0074] The cooking appliance 1 provided in this application embodiment, through the first microwave feed inlet 11a1a and the second microwave feed inlet 12a distributed on different side cavity walls 10, facilitates the feeding of microwaves from both the vertical and horizontal directions to heat food and improve heating uniformity. In other words, this method solves the problem of microwave uniformity. As a result, there is no need to set up the stirring antenna and motor as in the prior art, so that an empty space 14a can be formed between the cavity bottom wall and the partition. Through the design of the first recess 11a, the distance between the cavity bottom wall and the partition can be smaller, and there is no need to make room for the motor below the cavity bottom wall. Thus, the space below the partition can be made smaller. Therefore, while maintaining the same external dimensions of the cooking appliance 1 and ensuring microwave uniformity, it is also beneficial to increase the volume of the cooking cavity 10a.

[0075] In some embodiments, please refer to Figures 2 to 5 The cavity bottom wall 11 includes an annular first platform portion 11b, which surrounds the outer periphery of the first recess portion 11a, and the first recess portion 11a is recessed downward from the inner edge of the first platform portion 11b.

[0076] The top surface of the partition 14 is lower than the top surface of the first platform portion 11b. Thus, with the size of the cooking appliance 1 remaining unchanged, compared to related technologies where the top surface of the partition 14 is flush with the bottom wall 11a1 of the cooking cavity 10a, the cooking cavity 10a of this embodiment has a larger volume and can hold more food.

[0077] It should be noted that the specific area of ​​the first recess 11a is not limited.

[0078] In some embodiments, the projected area of ​​the first recess 11a (hereinafter referred to as S1) on the horizontal plane is not less than 1 / 2 of the projected area of ​​the cavity bottom wall 11 (hereinafter referred to as S), that is, S1 ≥ 1 / 2 * S. This makes the area S1 of the first recess 11a reasonable. On the one hand, it ensures that the bottom wall 11a1 of the first recess 11a has a reasonable area, which is beneficial for setting one or more first microwave feed inlets 11a1a on the bottom wall 11a1; on the other hand, it is beneficial for increasing the volume of the cooking cavity 10a.

[0079] In some embodiments, please refer to Figure 2 and Figure 3 The distance between partition 14 and bottom wall 11a1 (hereinafter referred to as H, please refer to...) Figure 3 () greater than 5mm (millimeters), that is, 5mm≤H, for example, H is 5mm, 6mm or 7mm, etc.

[0080] This ensures that the distance H between the partition 14 and the bottom wall 11a1 is reasonable, allowing microwaves to be dispersed within the space between the partition 14 and the bottom wall. This reduces the possibility of microwaves radiated from the first microwave feed inlet 11a1a focusing on the partition 14, thus ensuring the safety of the cooking appliance 1 during operation.

[0081] In some embodiments, please refer to Figure 2 and Figure 3 The distance H between the partition 14 and the bottom wall 11a1 is 7mm to 12mm, that is, 7mm≤H≤12mm. For example, H is 7mm, 8mm, 9mm, 10mm, 11mm or 12mm.

[0082] This makes the distance H between the partition 14 and the bottom wall 11a1 reasonable, and the microwaves can be dispersed in the space between the partition 14 and the bottom wall. This reduces the possibility of the microwaves radiated from the first microwave feed inlet 11a1a forming a focusing phenomenon on the partition 14, and also ensures the cooking efficiency of the microwaves radiated from the first microwave feed inlet 11a1a on the food on the partition 14.

[0083] In some embodiments, please refer to Figure 2 and Figure 3The first recess 11a includes a side wall 11a2, which has a stepped surface 11a2a. The partition 14 is supported on the stepped surface 11a2a. It is understood that the stepped surface 11a2a can provide support for the partition 14, thereby improving the stability of the partition 14 within the first recess 11a and allowing the food to be cooked to be cooked stably on the partition 14.

[0084] In some embodiments, please refer to Figure 9 The bottom wall 11a1 includes four quadrant regions, and each quadrant region is provided with at least one first microwave feed inlet 11a1a.

[0085] It is understandable that the first microwave feed inlet 11a1a is provided at each of the four corners of the bottom wall 11a1 of the first recess 11a, which can improve the microwave distribution at the four corners of the bottom of the cooking cavity 10a, reduce the microwave distribution blind zone, and further improve the uniformity of heating.

[0086] It should be noted that the four quadrants mentioned above are four quadrants defined by two coordinate axes in a two-dimensional rectangular coordinate system. The origin O of the two-dimensional rectangular coordinate system is located on the bottom side of the center point of the bottom wall 11a1, that is, the intersection of the diagonals of the bottom wall 11a1. The x-axis of the rectangular coordinate system is parallel to the horizontal direction, and the y-axis of the rectangular coordinate system is parallel to the front-back direction.

[0087] In some embodiments, please refer to Figure 9 The first microwave feed inlets 11a1a corresponding to the four quadrants are arranged axially symmetrically with respect to the coordinate axes and / or centrally symmetrically with respect to the origin of the four quadrants. In this way, the first microwave feed inlets 11a1a in the four quadrants can be evenly distributed, which can further improve the uniformity of microwave distribution in the cooking cavity 10a.

[0088] It should be noted that the above technical solutions include the following types: First, the first microwave feed inlets 11a1a corresponding to the four quadrants are arranged axially symmetrically with respect to the coordinate axes; Second, the first microwave feed inlets 11a1a corresponding to the four quadrants are arranged centrally symmetrically with respect to the origin of the four quadrants; Third, the first microwave feed inlets 11a1a corresponding to the four quadrants are arranged axially symmetrically with respect to the coordinate axes and also centrally symmetrically with respect to the origin of the four quadrants.

[0089] In some embodiments, please refer to Figure 9 The cavity wall 10 includes a first cavity sidewall 12, and the microwave generating assembly 20 is located on the side of the first cavity sidewall 12 away from the cooking cavity 10a.

[0090] It should be noted that, in this embodiment, the first cavity sidewall 12 is the cavity sidewall located on the right side of the cooking cavity 10a.

[0091] Please refer to Figure 9 and Figure 12 A portion of the first cavity sidewall 12 is recessed in a direction away from the cooking cavity 10a to form a second recessed portion 12b, and the flat area of ​​the first cavity sidewall 12 outside the second recessed portion 12b is a non-recessed portion 12c. It can be understood that the second recessed portion 12b being recessed in a direction away from the cooking cavity 10a can increase the internal space of the cooking cavity 10a.

[0092] It should be noted that the specific area of ​​the second recess 12b is not limited.

[0093] For example, in the orthographic projection onto the plane containing the first cavity sidewall 12, the area of ​​the second recess 12b (hereinafter referred to as S31) is greater than the area of ​​the non-recess 12c (hereinafter referred to as S32), i.e., S31 > S32; or, the area S31 of the second recess 12b is not less than 50% of the area of ​​the first cavity sidewall 12 (hereinafter referred to as S3), i.e., S31 ≥ 50% * S3. Thus, the area occupied by the second recess 12b on the first cavity sidewall 12 is the largest, so that the space within the second recess 12b can be included in the volume of the cooking cavity 10a.

[0094] In some embodiments, please refer to Figure 12 The second recess 12b is provided with a plurality of heat dissipation holes 12b1. It can be understood that airflow can enter the cooking cavity 10a through the heat dissipation holes 12b1 so that the airflow can carry away the heat accumulated in the cooking cavity 10a and improve the heat dissipation capacity of the cooking cavity 10a.

[0095] In some embodiments, please refer to Figure 12 The second microwave feed inlet 12a is located in the non-recessed portion 12c. Thus, the non-recessed portion 12c has a relatively large space on the side away from the cooking cavity 10a, which facilitates the installation of the microwave generating assembly 20 and the waveguide channel 30.

[0096] In some embodiments, please refer to Figure 11 The cooking appliance 1 includes a first shell 31 and a second shell 32 connected to each other. The first shell 31 is located on the side of the first cavity sidewall 12 away from the cooking cavity 10a, and the second shell 32 is located on the side of the cavity bottom wall 11 away from the cooking cavity 10a. The first shell 31 and the non-recessed portion 12c enclose a part of the waveguide channel 30, and the second shell 32 and the cavity bottom wall 11 enclose another part of the waveguide channel 30.

[0097] Understandably, both the first shell portion 31 and the second shell portion 32 possess a certain structural strength, enhancing the stability of the waveguide channel 30 and enabling it to stably conduct microwaves into the cooking cavity 10a through the first microwave feed inlet 11a1a and the second microwave feed inlet 12a. Furthermore, since the non-recessed portion 12c of the first cavity sidewall 12 and the cavity bottom wall 11 can participate in the formation of the waveguide channel 30, it is unnecessary for the first shell portion 31 and the second shell portion 32 to independently enclose a portion of the waveguide channel 30. This simplifies the structure of the first shell portion 31 and the second shell portion 32, reducing their size and thus minimizing the space occupied by the waveguide channel 30 within the cooking appliance 1, thereby improving the space utilization rate within the cooking appliance 1.

[0098] For example, a microwave generating assembly 20 is mounted on the first housing portion 31. The microwave generating assembly 20 includes a microwave transmitting antenna that passes through the first housing portion 31 and extends between the non-recessed portion 12c and the first housing portion 31. In this way, the space between the non-recessed portion 12c and the first housing portion 31 can be fully utilized to accommodate the microwave transmitting antenna, which is beneficial to improving the space utilization of the cooking appliance 1.

[0099] For example, the first housing 31 and the second housing 32 are an integral structure. It is understood that this can improve the connection strength between the first housing 31 and the second housing 32 to ensure the stability of the waveguide channel 30 during use.

[0100] For example, the first shell portion 31 extends along the height direction, and the second shell portion 32 extends along the horizontal direction. It can be understood that the extension direction of the first shell portion 31 is perpendicular to the extension direction of the second shell portion 32, so that the first shell portion 31 and the second shell portion 32 are connected to form an approximate L-shape, which is reasonable in structure and easy to assemble.

[0101] In some embodiments, please refer to Figure 4 , Figure 5 , Figure 6 and Figure 9 The edge of the first shell portion 31 abuts against the surface of the second recess 12b on the side away from the cooking cavity 10a. It can be understood that the surface of the second recess 12b on the side away from the cooking cavity 10a is raised, which makes it easier for the edge of the first shell portion 31 to abut against the surface of the second recess 12b on the side away from the cooking cavity 10a, and is beneficial for the first shell portion 31 and the first cavity sidewall 12 to enclose a part of the waveguide channel 30.

[0102] In some embodiments, please refer to Figure 7The cooking appliance 1 includes a transformer assembly 80, which supplies power to the microwave generator assembly 20. Both the transformer assembly 80 and the microwave generator assembly 20 are located on the side of the first cavity sidewall 12 away from the cooking cavity 10a, and the transformer assembly 80 is positioned below the microwave generator assembly 20. This allows for efficient use of the space below the microwave generator assembly 20 to accommodate the transformer assembly 80, thus improving the space utilization of the cooking appliance 1.

[0103] In some embodiments, please refer to Figure 7 The cooking appliance 1 includes a fan 70. The fan 70 and the microwave generating component 20 are both disposed on the side of the first cavity sidewall 12 away from the cooking cavity 10a. In the orthographic projection on the horizontal plane, the first cavity sidewall 12 and the microwave generating component 20 are arranged along a first direction, and the fan 70 and the microwave generating component 20 are arranged along a second direction.

[0104] Understandably, the fan 70 can transfer heat from the cooking appliance 1 to the external environment to dissipate heat from the components inside the cooking appliance 1, thereby improving the safety of using the cooking appliance 1. For example, when the fan 70 is running, it introduces airflow from the external environment into the cooking appliance 1, and the airflow carries away the heat accumulated on, for example, the microwave generating component 20, to dissipate heat from the microwave generating component 20.

[0105] It should be noted that the first direction and the second direction are perpendicular. In this embodiment, the first direction is the left-right direction of the cooking utensil 1, and the second direction is the front-back direction of the cooking utensil 1.

[0106] In some embodiments, please refer to Figure 1 and Figure 2 The cooking appliance 1 includes a housing 60. In orthographic projection onto a plane perpendicular to the front-back direction, the housing 60 surrounds the outer periphery of the cavity wall 10. An annular airflow channel 60a is formed between the inner surface of the housing 60 and the outer surface of the cavity wall 10. The fan 70 and the microwave generating assembly 20 are both disposed on the airflow path of the airflow channel 60a.

[0107] Understandably, the airflow can carry away the heat from the outer surface of the cavity wall 10 by flowing within the annular airflow channel 60a, thereby improving the heat dissipation capacity of the outer surface of the cavity wall 10 and reducing the possibility of heat radiation from the cooking cavity 10a to the outer surface of the cooking appliance 1, thus improving the safety of using the cooking appliance 1.

[0108] In some embodiments, please refer to Figure 4 , Figure 5 , Figure 7 and Figure 8 The cooking appliance 1 includes a heat insulation cover unit 40 and a heating element 50.

[0109] The heat insulation cover unit 40 is disposed on the side of the cavity top wall 13 away from the cooking cavity 10a, and together with the cavity top wall 13, forms the mounting cavity 40a. It can be understood that the mounting cavity 40a and the cooking cavity 10a are located on opposite sides of the cavity top wall 13.

[0110] The heating element 50 is disposed in the mounting cavity 40a. It is understood that the heating element 50 is located outside the cooking cavity 10a, so that the heating element 50 does not occupy the space of the cooking cavity 10a and does not affect the aesthetics of the cooking cavity 10a. In addition, it can also prevent food, food containers, etc. from scratching the heating element 50, thereby improving the safety of using the cooking utensil 1.

[0111] Furthermore, the heat insulation unit 40 can reduce the leakage of heat generated by the heating element 50, thereby improving the cooking effect of the cooking appliance 1.

[0112] It should be noted that the heating component 50 and the microwave generating component 20 in this embodiment can work independently or simultaneously.

[0113] Please refer to Figure 9 The top wall 13 of the cavity has multiple through holes 13a for connecting the cooking cavity 10a and the mounting cavity 40a, and the heating element 50 is disposed in the mounting cavity 40a. Thus, the heat generated by the heating element 50 can enter the cooking cavity 10a through the multiple through holes 13a, thereby heating the food in the cooking cavity 10a. It is understood that in this embodiment, the food in the cooking cavity 10a can be heated not only by microwaves fed through the first microwave feed inlet 11a1a and the second microwave feed inlet 12a, but also by the heat generated by the heating element 50, thereby increasing the cooking effect of the cooking appliance 1 on the food.

[0114] For example, multiple through holes 13a are used to shield microwaves. In this way, microwaves from the cooking cavity 10a will not enter the mounting cavity 40a, thereby reducing the possibility of arcing when microwaves come into contact with the heating element 50, and thus improving the safety of the cooking appliance 1 during use.

[0115] It should be noted that the term "shielding microwaves" means that when microwaves reach the top wall 13 of the cavity, they cannot pass through the through hole 13a.

[0116] For example, the maximum opening size (represented by R) of any through hole 13a does not exceed 1 / 4 of the microwave wavelength (represented by λ), that is, R≤1 / 4λ. Taking a microwave frequency of 2.45GHz as an example, the microwave wavelength λ is 12.2cm (cm), and the maximum opening size of any through hole 13a does not exceed 3.05cm, that is, R≤3.05cm.

[0117] It should be noted that the specific shape of the through hole 13a is not limited. For example, the through hole 13a can be circular or polygonal, such as triangle, quadrilateral, pentagon, hexagon, etc. The embodiments of this application do not limit the shape of the through hole 13a, as long as the maximum opening size of the through hole 13a meets the requirements for shielding microwaves.

[0118] 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.

[0119] The above description is merely a preferred embodiment of this application and is not intended to limit the 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 utensil, characterized in that, The cooking appliance has a cooking cavity, and the cooking appliance includes: The cavity wall, wherein the cooking cavity is located within the space enclosed by the cavity wall, the cavity wall includes a cavity bottom wall and a plurality of cavity side walls, the cavity bottom wall includes a first recessed portion, the first recessed portion being recessed downward, the first recessed portion including a bottom wall, the bottom wall being provided with one or more first microwave feed inlets; at least one cavity side wall is provided with one or more second microwave feed inlets; A partition is disposed in the first recess, the partition is used to place food, and an empty space is formed between the bottom wall and the partition; Microwave generating assembly, used to generate microwaves; A waveguide channel is used to conduct microwaves generated by the microwave generating component to the cooking cavity through the first microwave feed inlet and the second microwave feed inlet.

2. The cooking utensil according to claim 1, characterized in that, The cavity bottom wall includes an annular first platform portion, which surrounds the outer periphery of the first recess portion, and the first recess portion is recessed downward from the inner edge of the first platform portion; The top surface of the partition is lower than the top surface of the first platform portion.

3. The cooking utensil according to claim 1, characterized in that, The projected area of ​​the first recessed portion in the horizontal plane is not less than 1 / 2 of the projected area of ​​the cavity bottom wall.

4. The cooking utensil according to claim 1, characterized in that, The distance between the partition and the bottom wall is greater than 5 mm.

5. The cooking utensil according to claim 1, characterized in that, The distance between the partition and the bottom wall is 7mm to 12mm.

6. The cooking utensil according to claim 1, characterized in that, The first recess includes a side wall, which is provided along the edge of the bottom wall and has a stepped surface, and the partition is supported on the stepped surface.

7. The cooking utensil according to claim 1, characterized in that, The cavity wall includes a first cavity sidewall, and the microwave generating assembly is located on the side of the first cavity sidewall away from the cooking cavity; The cooking appliance includes a first shell and a second shell connected to each other. The first shell is located on the side of the first cavity sidewall away from the cooking cavity, and the second shell is located on the side of the cavity bottom wall away from the cooking cavity. The first shell and the first cavity sidewall together enclose a portion of the waveguide channel, and the second shell and the cavity bottom wall together enclose another portion of the waveguide channel.

8. The cooking utensil according to claim 1, characterized in that, The bottom wall includes four quadrant regions, and each quadrant region is provided with at least one of the first microwave feed inlets; The four quadrants are four quadrants defined by two coordinate axes in a two-dimensional rectangular coordinate system.

9. The cooking utensil according to claim 8, characterized in that, The first microwave feed inlets corresponding to the four quadrants are arranged axially symmetrically with respect to the coordinate axes and / or centrally symmetrically with respect to the origin of the four quadrants.

10. The cooking utensil according to any one of claims 1 to 9, characterized in that, The cavity wall includes a first cavity sidewall, and the microwave generating assembly is located on the side of the first cavity sidewall away from the cooking cavity; A portion of the first cavity sidewall is recessed in a direction away from the cooking cavity to form a second recessed portion, and the flat area of ​​the first cavity sidewall outside the second recessed portion is a non-recessed portion. The area of ​​the second recessed portion is greater than the area of ​​the non-recessed portion when projected onto the plane containing the first cavity sidewall; or, the area of ​​the second recessed portion is not less than 50% of the area of ​​the first cavity sidewall.

11. The cooking utensil according to claim 10, characterized in that, The second recessed portion is provided with a plurality of heat dissipation holes; and / or, the second microwave feed inlet is provided in the non-recessed portion.

12. The cooking utensil according to claim 10, characterized in that, The cooking appliance includes a first shell portion and a second shell portion connected to each other. The first shell portion is located on the side wall of the first cavity away from the cooking cavity, and the second shell portion is located on the bottom wall of the cavity away from the cooking cavity. The first housing portion and the non-recessed portion cooperate to enclose a portion of the waveguide channel. The microwave generating component is mounted on the first housing portion. The microwave generating component includes a microwave transmitting antenna that passes through the first housing portion and extends between the non-recessed portion and the first housing portion.

13. The cooking utensil according to claim 1, characterized in that, The cooking appliance includes a transformer assembly for supplying power to the microwave generating assembly; The cavity wall includes a first cavity sidewall, the microwave generating assembly and the transformer assembly are both located on the side of the first cavity sidewall away from the cooking cavity, and the transformer assembly is disposed below the microwave generating assembly.

14. The cooking utensil according to claim 1, characterized in that, The cooking appliance includes a fan, the cavity wall includes a first cavity sidewall, and the microwave generating component and the fan are both located on the side of the first cavity sidewall away from the cooking cavity; In a horizontal projection, the first cavity sidewall and the microwave generating assembly are arranged along a first direction, and the fan and the microwave generating assembly are arranged along a second direction, with the first direction and the second direction being perpendicular.

15. The cooking utensil according to claim 14, characterized in that, The cooking appliance includes a shell. In a plane perpendicular to the front-back direction of the cooking appliance, the shell surrounds the outer periphery of the cavity wall. An annular airflow channel is formed between the inner surface of the shell and the outer surface of the cavity wall. The fan and the microwave generating component are both disposed on the airflow path of the airflow channel.

16. The cooking utensil according to claim 1, characterized in that, The cavity wall includes a cavity top wall, and the cooking appliance includes a heat insulation cover unit and a heating element. The heat insulation cover unit is disposed on the side of the cavity top wall away from the cooking cavity and together with the cavity top wall forms an installation cavity. The cavity top wall has multiple through holes for communicating between the cooking cavity and the installation cavity, and the heating element is disposed in the installation cavity.

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