A cooking utensil

Abstract

The cooking appliance provided in this application embodiment has a cooking cavity, including a cavity sidewall, a cavity top wall, a cavity bottom wall, a magnetron control assembly, and a waveguide channel. A first microwave feed inlet is provided on the cavity top wall or cavity bottom wall, a second microwave feed inlet is provided on the cavity sidewall, and a third microwave feed inlet is provided on the cavity top wall, cavity bottom wall, or cavity sidewall, with the first, second, and third microwave feed inlets located on different sides of the cooking cavity. The magnetron control assembly is used to generate microwaves. The waveguide channel is used to conduct the microwaves generated by the magnetron control assembly to the cooking cavity through the first, second, and third microwave feed inlets. The cooking effect of the cooking appliance is improved by using the first, second, and third microwave feed inlets distributed on different sides of the cooking cavity.

Description

Technical Field

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

[0002] Taking microwave ovens as an example, related technologies utilize waveguide assemblies to guide microwaves generated by magnetron assemblies into the cooking cavity. These microwaves then drive the vibration of molecules within the food to heat it, thus achieving cooking. However, uneven microwave distribution within the cooking cavity affects the cooking efficiency of the appliance. Utility Model Content

[0003] In view of this, the present application aims to provide a cooking appliance that improves the microwave distribution within the cooking cavity, thereby enhancing the cooking efficiency of the appliance.

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

[0005] This application provides a cooking appliance, the cooking appliance having a cooking cavity, the cooking appliance comprising:

[0006] The cooking cavity comprises a cavity sidewall, a cavity top wall, and a cavity bottom wall. The cooking cavity is located within the space formed by the cavity sidewall, the cavity top wall, and the cavity bottom wall. A first microwave feed inlet is provided on the cavity top wall or the cavity bottom wall, a second microwave feed inlet is provided on the cavity sidewall, and a third microwave feed inlet is provided on the cavity top wall, the cavity bottom wall, or the cavity sidewall. The first microwave feed inlet, the second microwave feed inlet, and the third microwave feed inlet are located on different sides of the cooking cavity.

[0007] Magnetron assembly, used to generate microwaves;

[0008] A waveguide channel is used to conduct microwaves generated by the magnetron assembly to the cooking cavity through the first microwave feed inlet, the second microwave feed inlet, and the third microwave feed inlet.

[0009] In some implementations, the bottom wall of the cavity is provided with the first microwave feed inlet, and the top wall of the cavity is provided with the third microwave feed inlet.

[0010] In some implementations, the magnetron assembly and the second microwave feed inlet are located on the same side of the cooking cavity.

[0011] In some implementations, the first microwave feed inlet includes multiple sub-feed inlets; the cavity bottom wall includes four quadrants, each quadrant having at least one sub-feed inlet; wherein the four quadrants are four quadrants defined by two coordinate axes in a two-dimensional Cartesian coordinate system.

[0012] In some implementations, the third microwave feed inlet includes multiple sub-feed inlets; the cavity top wall includes four quadrants, each quadrant having at least one sub-feed inlet; wherein the four quadrants are four quadrants defined by two coordinate axes in a two-dimensional Cartesian coordinate system.

[0013] In some implementations, the sub-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.

[0014] In some embodiments, the first microwave feed inlet is located on the bottom wall of the cavity, the third microwave feed inlet is located on the top wall of the cavity, and the first microwave feed inlet and / or the third microwave feed inlet includes a plurality of sub-feed inlets, each sub-feed inlet including at least one sub-feed slot; the second microwave feed inlet includes at least one microwave feed slot;

[0015] Wherein, the angle between the extension direction of the sub-feed slit and the first direction is the first angle, and the angle between the extension direction of the microwave feed slit and the height direction of the cooking appliance is the second angle. The values ​​of the first angle and the second angle are different, and the first direction is perpendicular to the height direction of the cooking appliance.

[0016] In some embodiments, the subfeed inlet includes at least two subfeed slots, which are intersected.

[0017] In some implementations, the first included angle is 35°-55°; and / or, the second included angle is 5°-25°.

[0018] In some embodiments, the sub-feed slot has a dimension of not less than 55 mm along its extension direction and not less than 15 mm along its perpendicular extension direction; and / or, the microwave feed slot has a dimension of not less than 60 mm along its extension direction and not less than 15 mm along its perpendicular extension direction.

[0019] In some embodiments, the cooking appliance includes a waveguide housing assembly located outside the cooking cavity, the waveguide housing assembly and the cavity wall of the cooking cavity forming the waveguide channel.

[0020] In some embodiments, the cooking appliance includes a waveguide shell assembly and a waveguide cover assembly, both of which are located outside the cooking cavity, and the waveguide shell assembly and the waveguide cover assembly enclose the waveguide channel;

[0021] The waveguide cover assembly is provided with multiple through holes, some of which are aligned with the first microwave feed inlet and others are aligned with the second microwave feed inlet.

[0022] In some embodiments, the waveguide assembly includes a first waveguide shell, a second waveguide shell, and a third waveguide shell connected in sequence, wherein the first waveguide shell and the third waveguide shell both extend along a first direction, and the second waveguide shell extends along a height direction;

[0023] Wherein, the first direction is perpendicular to the height direction.

[0024] In some implementations, the first waveguide shell, the second waveguide shell, and the third waveguide shell are an integral structure.

[0025] In some embodiments, the cooking appliance includes a magnetic mounting bracket disposed on the side of the second waveguide housing away from the cooking cavity, the second waveguide housing having a magnetic port, the magnetic assembly being mounted on the magnetic mounting bracket, one end of the magnetic assembly passing through the magnetic port and extending into the second waveguide housing.

[0026] In some implementations, the first waveguide shell includes a first platform segment and a first connecting segment, one end of the first connecting segment being connected to the second waveguide shell, the first platform segment being located at the end of the first connecting segment away from the second waveguide shell, and the projection of the first microwave feed inlet onto a plane perpendicular to the height direction being within the projection range of the first platform segment; wherein, the dimension of the first platform segment perpendicular to the first direction is greater than the dimension of the first connecting segment perpendicular to the first direction.

[0027] In some embodiments, the third waveguide shell includes a second platform segment and a second connecting segment, one end of the second connecting segment being connected to the second waveguide shell, and the second platform segment being located at the end of the second connecting segment away from the second waveguide shell. In the orthographic projection of a plane perpendicular to the height direction, the projection of the third microwave feed inlet is located within the projection range of the second platform segment; wherein, the dimension of the second platform segment perpendicular to the first direction is greater than the dimension of the second connecting segment perpendicular to the first direction.

[0028] The cooking appliance provided in this application, through a first microwave feed inlet, a second microwave feed inlet, and a third microwave feed inlet distributed on different side walls of the cavity, facilitates the feeding of microwaves from both the vertical and horizontal directions to heat food, improving heating uniformity and enhancing the cooking effect. Furthermore, feeding microwaves from at least three cavity walls helps reduce blind spots within the cooking cavity, improving the rationality of microwave distribution within the cavity. This allows for both rapid heating of food and enhanced heating uniformity in the vertical direction, further improving the cooking effect. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the structure of a cooking utensil provided in one embodiment of this application;

[0030] Figure 2 for Figure 1 Schematic diagram of the middle waveguide assembly;

[0031] Figure 3 for Figure 2 Schematic diagram of the structure of the first waveguide shell;

[0032] Figure 4 for Figure 1 A schematic diagram of the middle waveguide assembly from another perspective.

[0033] Explanation of reference numerals in the attached figures

[0034] 1. Cooking appliance; 1a. Cooking cavity; 1a1. Cavity sidewall; 1a11. Notch; 1a2. Cavity bottom wall; 1a21. Recessed area; 1a22. Quadrant area; 1a3. Loading / unloading port; 1a4. Cavity top wall; 12. Waveguide shell assembly; 121. First waveguide shell; 121a. First microwave feed inlet; 121a1. Sub-feed inlet; 121a11. Sub-feed slot; 121b. First platform section; 121c. First connecting section; 122a. Second microwave feed inlet; 122a1. Microwave feed slot; 122. Second waveguide shell; 123. Third waveguide shell; 123a. Third microwave feed inlet; 123b. Second platform section; 123c. Second connecting section; 15. Magnetically controlled mounting bracket; A. First included angle; B. Second included angle. Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solutions of this application, and are therefore only examples, and should not be used to limit the scope of protection of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0036] In the description of the embodiments of this application, technical terms such as "first," "second," and "third" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0037] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0038] In the description of the embodiments in this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects are in an "or" relationship.

[0039] In the description of the embodiments of this application, unless otherwise expressly specified and limited, technical terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application according to the specific circumstances.

[0040] In the description of the embodiments of this application, unless otherwise expressly specified and limited, the technical term "contact" should be interpreted broadly, and can be direct contact, contact through an intermediate medium layer, contact between two contacting parties with substantially no interaction force, or contact between two contacting parties with interaction force.

[0041] The present application will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0042] This application provides a cooking utensil 1, please refer to... Figure 1 and Figure 2The cooking appliance 1 has a cooking cavity 1a, which includes a cavity sidewall 1a1, a cavity top wall 1a4, a cavity bottom wall 1a2, a magnetron control assembly (not shown in the figure), and a waveguide channel. The cooking cavity 1a is located within the space formed by the cavity sidewall 1a1, the cavity top wall, and the cavity bottom wall 1a2. A first microwave feed inlet 121a is provided on the cavity top wall or the cavity bottom wall 1a2, a second microwave feed inlet 122a is provided on the cavity sidewall 1a1, and a third microwave feed inlet 123a is provided on the cavity top wall 1a4, the cavity bottom wall 1a2, or the cavity sidewall 1a1. The first microwave feed inlet 121a, the second microwave feed inlet 122a, and the third microwave feed inlet 123a are located on different sides of the cooking cavity 1a. The magnetron control assembly is used to generate microwaves. The waveguide channel is used to conduct the microwaves generated by the magnetron control assembly to 1a1 through the first microwave feed inlet 121a, the second microwave feed inlet 122a, and the third microwave feed inlet 123a.

[0043] It should be noted that the specific type of cooking utensil 1 is not limited here.

[0044] 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-steam-oven combo, to improve ease of use. This application embodiment uses a microwave oven as an example for description.

[0045] In an embodiment where the cooking appliance 1 is a microwave oven, the cooking appliance 1 can be a flatbed microwave oven or a turntable microwave oven.

[0046] Please refer to Figure 1 The walls of the cooking cavity 1a include side walls 1a1, a top wall 1a4, and a bottom wall 1a2. It is understood that the space enclosed by the walls of the cooking cavity 1a can be used to accommodate food to be cooked. It should be noted that the top and bottom walls refer to the two sides in the vertical direction, such as... Figure 1 The directions pointed to by the two ends of the height-direction arrow.

[0047] It should be noted that the cavity wall of the cooking cavity 1a can be formed of a single metal material or a mixture of multiple metal materials, and this application does not impose any restrictions on this.

[0048] For example, please refer to Figure 1 The cooking cavity 1a has a loading / unloading opening 1a3 on one side along the front-to-back direction. Understandably, food to be cooked can enter and exit the cooking cavity 1a through the loading / unloading opening 1a3.

[0049] For ease of understanding, in this embodiment, the side where the opening 1a3 is located is designated as the front side, and the side opposite to the opening 1a3 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.

[0050] The magnetron is used to generate microwaves. Microwaves are, as is understandable, used to heat food.

[0051] It should be noted that the specific structure of the magnetron is not limited, as long as it can generate microwave signals with specific power, frequency, and phase difference.

[0052] It should be noted that there is no limit to the specific frequency of microwaves. For example, the frequency of microwaves is 2.458 GHz (gigahertz, a unit of frequency).

[0053] For example, the first microwave feed inlet 121a, the second microwave feed inlet 122a and the third microwave feed inlet 123a are all connected to the waveguide channel.

[0054] It should be noted that the waveguide component 12 can be formed from a single metal material or from a mixture of multiple metal materials.

[0055] Because microwaves have limited penetration depth into food, uneven microwave distribution within the cooking cavity can easily lead to uneven heating, reducing the cooking effect of the cooking appliance. In some related technologies, the microwave feed is concentrated from the right side of the cavity wall. Food is placed on a rotating turntable, and rotation improves the cooking effect, but the bottom of the food is difficult to heat, resulting in noticeable uneven heating. In other related technologies, the microwave feed is concentrated from the bottom wall of the cavity. Food does not need to be rotated for heating; however, when foods like milk cups are placed in the cavity, the upper part of the cup is difficult to heat, also resulting in noticeable uneven heating. Furthermore, there are microwave blind spots near the four corners of the bottom of the cooking cavity, leading to uneven heating.

[0056] Therefore, please refer to the embodiments of this application. Figures 1 to 4The second microwave feed inlet 122a is located on the cavity sidewall 1a1, the first microwave feed inlet 121a is located on the cavity top wall 1a4 or the cavity bottom wall 1a2, and the third microwave feed inlet 123a is located on the cavity top wall 1a4, the cavity bottom wall 1a2, or the cavity sidewall 1a1. The first microwave feed inlet 121a, the second microwave feed inlet 122a, and the third microwave feed inlet 123a are located on different sides of the cooking cavity 1a. The cooking appliance 1 provided in this embodiment facilitates the feeding of microwaves from both vertical and horizontal directions through the first microwave feed inlet 121a, the second microwave feed inlet 122a, and the third microwave feed inlet 123a distributed on different sides of the cooking cavity 1a, thereby heating the food, improving heating uniformity, and enhancing the cooking effect of the cooking appliance 1.

[0057] In related technologies, the inner partition of a flatbed microwave oven does not rotate, but rotates through a metal antenna at the bottom to improve uniformity. However, the internal stirring system of a flatbed microwave oven is complex and occupies too much bottom space, resulting in a small cavity volume ratio and a bulky shape.

[0058] In this embodiment, by using the first microwave feed inlet 121a, the second microwave feed inlet 122a, and the third microwave feed inlet 123a distributed on different sides of the cooking cavity 1a, microwave input is achieved in three directions of the cooking appliance 1, and the power and phase can be adjusted to radiate into the cooking cavity 1a, thereby improving the uniformity of the electric field coverage inside the cooking cavity 1a. As a result, a stirring system can be eliminated, and the volume ratio of the cooking appliance 1 is increased while meeting the requirement of uniform food cooking.

[0059] It should be noted that the cavity sidewall 1a1 refers to the remaining parts of the cavity wall excluding the cavity top wall 1a4 and the cavity bottom wall 1a2. For example, it could be the cavity wall on the left, right, or rear side of the cooking cavity 1a.

[0060] The first microwave feed inlet 121a described above is located on one side of the cavity top wall 1a4 or the cavity bottom wall 1a2, including the following types: First, the first microwave feed inlet 121a is located on the cavity top wall 1a4; Second, the first microwave feed inlet 121a is located on the cavity bottom wall 1a2.

[0061] The aforementioned third microwave feed inlet 123a located on the top wall 1a4, bottom wall 1a2, or side wall 1a1 of the cavity includes the following types: First, the third microwave feed inlet 123a is located on the top wall 1a4; Second, the third microwave feed inlet 123a is located on the bottom wall 1a2; Third, the third microwave feed inlet 123a is located on the side wall 1a1.

[0062] In this embodiment, by introducing a waveguide power divider structure, microwaves are fed into the cavity walls at three different locations in the cooking cavity 1a. At the same time, the amplitude and phase of the microwave output of the first microwave feed inlet 121a, the second microwave feed inlet 122a, and the third microwave feed inlet 123a can be adjusted by the relative positions and widths of the three microwave feed inlets, thereby improving the uniformity of cooking and enhancing the user experience.

[0063] The cooking appliance 1 provided in this application embodiment, through a first microwave feed inlet 121a, a second microwave feed inlet 122a, and a third microwave feed inlet 123a distributed on different sides of the cooking cavity 1a, facilitates the feeding of microwaves from both the vertical and horizontal directions to heat food, improves heating uniformity, and enhances the cooking effect of the cooking appliance 1. Furthermore, by feeding microwaves from at least three cavity walls of the cooking cavity 1a, it helps to reduce the blind zone of microwaves within the cooking cavity 1a, improves the rationality of microwave distribution within the cooking cavity 1a, and enables both rapid heating of food and improved heating uniformity in the vertical direction, further enhancing the cooking effect of the cooking appliance 1.

[0064] Here, there are various ways to distribute the first microwave feed inlet 121a, the second microwave feed inlet 122a, and the third microwave feed inlet 123a.

[0065] For example, please refer to Figure 1 and Figure 2 The first microwave feed inlet 121a can be located on the bottom wall 1a2 of the cavity, the second microwave feed inlet 122a can be located on the side wall 1a1 of the cavity, and the third microwave feed inlet 123a can be located on the top wall 1a4 of the cavity.

[0066] Alternatively, the first microwave feed inlet 121a can be located on the cavity bottom wall 1a2, the second microwave feed inlet 122a can be located on the cavity side wall 1a1, and the third microwave feed inlet 123a can be located on the cavity side wall 1a1.

[0067] Alternatively, the first microwave feed inlet 121a can be located on the top wall 1a4 of the cavity, the second microwave feed inlet 122a can be located on the side wall 1a1 of the cavity, and the third microwave feed inlet 123a can be located on the side wall 1a1 of the cavity.

[0068] In some embodiments, please refer to Figures 2 to 4 The cooking appliance 1 includes a waveguide shell assembly 12, which is located outside the cooking cavity 1a. The waveguide shell assembly 12 and the cavity wall of the cooking cavity 1a form a waveguide channel 12a.

[0069] It is understood that the waveguide shell assembly 12 has a cavity inside and is fastened to the outside of the cavity wall of the cooking cavity 1a (the side of the cavity wall away from the cooking cavity 1a). The cavity wall of the cooking cavity 1a and the waveguide shell assembly 12 together form a waveguide channel 12a. On the one hand, the formation of the waveguide channel 12a is simple, which can reduce the assembly difficulty of the cooking appliance 1 and improve the manufacturing efficiency of the cooking appliance 1. On the other hand, the waveguide shell assembly 12 is close to the cavity wall of the cooking cavity 1a, has a compact structure, and saves internal space of the cooking appliance 1.

[0070] It should be noted that, Figures 2 to 4 The diagram shows only a portion of the cavity wall of the cooking cavity 1a in conjunction with the waveguide shell assembly 12.

[0071] In other embodiments, the cooking appliance 1 includes a waveguide shell assembly 12 and a waveguide cover assembly (not shown in the figure). Both the waveguide shell assembly 12 and the waveguide cover assembly are located outside the cooking cavity 1a, and the waveguide shell assembly 12 and the waveguide cover assembly enclose a waveguide channel 12a. It is understood that the waveguide cover assembly has a certain structural strength, which can improve the stability of the waveguide channel 12a, so that the waveguide channel 12a can stably conduct microwaves into the cooking cavity 1a through the first microwave feed inlet 121a, the second microwave feed inlet 122a and the third microwave feed inlet 123a.

[0072] In this embodiment, the waveguide cover assembly is provided with multiple through holes, some of which are aligned with the first microwave feed inlet 121a and others are aligned with the second microwave feed inlet 122a.

[0073] In some embodiments, please refer to Figures 2 to 4 The waveguide assembly 12 includes a first waveguide shell 121, a second waveguide shell 122 and a third waveguide shell 123 connected in sequence. The first waveguide shell 121 and the third waveguide shell 123 both extend along a first direction, and the second waveguide shell 122 extends along the height direction.

[0074] It is understood that the extension directions of the first waveguide shell 121 and the third waveguide shell 123 are perpendicular to the extension direction of the second waveguide shell 122, making the structure of the waveguide assembly 12 roughly C-shaped. When the second waveguide shell 122 is located on the cavity sidewall 1a1, it is convenient for the first waveguide shell 121 to extend the first microwave feed inlet 121a to one side of the cavity bottom wall 1a2, and the third waveguide shell 123 to extend the third microwave feed inlet 123a to one side of the cavity top wall 1a4. This makes the structure of the waveguide assembly 12 reasonable and helps to reduce the space occupied by the waveguide assembly 12 in the cooking appliance 1.

[0075] It should be noted that the first direction is perpendicular to the height direction; the first direction refers to... Figure 1 The arrow in the first direction points to the left and right directions respectively.

[0076] In an embodiment where the cooking appliance 1 includes a waveguide shell assembly 12 and a waveguide cover assembly, the waveguide cover assembly includes a first waveguide cover, a second waveguide cover, and a third waveguide cover. The first waveguide cover and the first waveguide shell 121 are joined along the height direction; the third waveguide cover and the third waveguide shell 122 are joined along the height direction; and the second waveguide cover and the second waveguide shell 122 are joined along a first direction. This simplifies the structure of the waveguide shell assembly 12 and the waveguide cover assembly, making them easy to manufacture. It should be noted that the first waveguide cover and the first waveguide shell 121, when joined, form a portion of the waveguide channel; the second waveguide cover and the second waveguide shell 122, when joined, form another portion of the waveguide channel; and the third waveguide cover and the third waveguide shell 122, when joined, form the remaining portion of the waveguide channel.

[0077] In some embodiments, the first waveguide shell 121, the second waveguide shell 122, and the third waveguide shell 123 are an integral structure.

[0078] Understandably, on the one hand, it can improve the connection strength of the first waveguide shell 121, the second waveguide shell 122, and the third waveguide shell 123 to ensure the shape of the waveguide assembly 12 during use, so that the first microwave feed inlet 121a, the second microwave feed inlet 122a, and the third microwave feed inlet 123a can stably conduct microwaves into the cooking cavity 1a; on the other hand, it can reduce the assembly difficulty of the waveguide assembly 12, which is conducive to improving the production efficiency of the waveguide assembly 12.

[0079] In some embodiments, please refer to Figure 2 The cooking appliance 1 includes a magnetic control mounting bracket 15, which is located on the side of the second waveguide housing 122 away from the cooking cavity 1a. The second waveguide housing 122 has a magnetic control port. The magnetic control component is mounted on the magnetic control mounting bracket 15, with one end of the component passing through the magnetic control port and extending into the second waveguide housing 122. It is understood that the magnetic control mounting bracket 15 provides support for the magnetic control component, facilitating stable microwave generation and conduction through the magnetic control port into the waveguide channel, thereby improving the operational stability of the cooking appliance 1.

[0080] It should be noted that, along the microwave propagation direction, the distances between the magnetron port and the first microwave feed port 121a, the second microwave feed port 122a, and the third microwave feed port 123a respectively meet the requirement of half a wavelength of microwave, so that microwaves can pass through the first microwave feed port 121a, the second microwave feed port 122a, and the third microwave feed port 123a.

[0081] In some embodiments, please refer to Figures 2 to 3The first waveguide shell 121 includes a first platform segment 121b and a first connecting segment 121c. One end of the first connecting segment 121c is connected to the second waveguide shell 122. The first platform segment 121b is located at the end of the first connecting segment 121c away from the second waveguide shell 122. In the orthographic projection of the first microwave feed inlet 121a onto the plane perpendicular to the height direction, the projection of the first microwave feed inlet 121a is located within the projection range of the first platform segment 121b. The dimension H1 of the first platform segment 121b in the first direction perpendicular to the first direction is greater than the dimension H2 of the first connecting segment 121c in the first direction perpendicular to the first direction.

[0082] It is understandable that by fully utilizing the dimensions of the platform end along the front-to-back direction to maximize the area of ​​the first microwave feed inlet 121a, the amount of microwaves entering the cooking cavity 1a through the first microwave feed inlet 121a can be increased, thereby improving the cooking effect of the cooking appliance 1. In addition, the first microwave feed inlet 121a can be positioned as close as possible to the edge of the cavity bottom wall 1a2, reducing the possibility of microwave dead zones at the edge of the cavity bottom wall 1a2, thereby improving the heating uniformity of the edge of the cooking cavity 1a.

[0083] For example, the dimension H2 of the first connecting segment 121c perpendicular to the first direction is, for example, 80 mm, and the dimension H1 of the first platform segment 121b perpendicular to the first direction can gradually change from 80 mm to 120 mm.

[0084] In some embodiments, please refer to Figure 2 The third waveguide shell 123 includes a second platform segment 123b and a second connecting segment 123c. One end of the second connecting segment 123c is connected to the second waveguide shell 122. The second platform segment 123b is located at the end of the second connecting segment 123c away from the second waveguide shell 122. In the orthographic projection of the third microwave feed inlet 123a onto the plane perpendicular to the height direction, the projection of the third microwave feed inlet 123a is located within the projection range of the second platform segment 123b. The dimension of the second platform segment 123b in the perpendicular direction is larger than the dimension of the second connecting segment 123c in the perpendicular direction.

[0085] It is understandable that by fully utilizing the dimensions of the platform end along the front-to-back direction to maximize the area of ​​the third microwave feed inlet 123a, the amount of microwaves entering the cooking cavity 1a through the third microwave feed inlet 123a can be increased, thereby improving the cooking effect of the cooking appliance 1. In addition, the third microwave feed inlet 123a can be positioned as close as possible to the edge of the cavity top wall 1a4, reducing the possibility of microwave dead zones at the edge of the cavity top wall 1a4, thus improving the heating uniformity of the edge of the cooking cavity 1a.

[0086] For example, the second connecting segment 123c has a dimension of 80mm perpendicular to the first direction, and the second platform segment 123b can have a dimension of 120mm perpendicular to the first direction.

[0087] For example, by adjusting the relative positions of the first microwave feed inlet 121a, the second microwave feed inlet 122a, and the third microwave feed inlet 123a and the degree of gradient of the width of the waveguide channel, the amplitude and phase of microwaves entering the cooking cavity 1a from the first microwave feed inlet 121a, the second microwave feed inlet 122a, and the third microwave feed inlet 123a can be changed, thereby synthesizing a uniform electric field distribution in space to achieve a uniform cooking effect.

[0088] In some embodiments, please refer to Figure 2 The magnetron assembly and the second microwave feed inlet 122a are located on the same side of the cooking cavity 1a.

[0089] In this way, on the one hand, it helps to save internal space of cooking appliance 1, making the structure of cooking appliance 1 compact; on the other hand, it facilitates the entry of microwaves generated by the magnetron control component into the cooking cavity 1a through the second microwave feed inlet 122a.

[0090] It should be noted that the specific shape of the first microwave feed inlet 121a is not limited.

[0091] In some embodiments, please refer to Figure 1 and Figure 2 The first microwave feed inlet 121a is located on the bottom wall 1a2 of the cavity, and the first microwave feed inlet 121a includes multiple sub-feed inlets 121a1.

[0092] It is understandable that by feeding microwaves into the cooking cavity 1a through multiple sub-feed inlets 121a1, the microwaves can be evenly distributed, thereby improving the microwave uniformity within the cooking cavity 1a and thus enhancing the cooking effect of the cooking appliance 1.

[0093] It should be noted that the specific distribution of the multiple sub-feed inlets 121a1 of the first microwave feed inlet 121a is not limited.

[0094] For example, please refer to Figure 2 and Figure 3 The cavity bottom wall 1a2 includes four quadrant regions 1a22, each quadrant having at least one sub-feed inlet 121a1. This ensures a uniform distribution of the sub-feed inlets 121a1 across the cavity bottom wall 1a2, facilitating the filling of different locations within the cooking cavity 1a with microwaves fed through multiple sub-feed inlets 121a1, thus improving microwave uniformity within the cooking cavity 1a. Furthermore, it allows microwaves fed through the first microwave inlet 121a to cover as much of the cavity bottom wall 1a2 as possible and radiate heat along the height direction, improving the heating uniformity of the food's bottom and shortening the heating time.

[0095] It should be noted that the four quadrant regions 1a22 are four quadrant regions 1a22 defined by two coordinate axes in a two-dimensional rectangular coordinate system. Among them, the origin O of the above-mentioned two-dimensional rectangular coordinate system is located on the bottom side of the center point of the cavity bottom wall 1a2, that is, the intersection of the diagonals of the cavity bottom wall 1a2. 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 and back direction.

[0096] It should be noted that the specific shape of the third microwave feed inlet 123a is not limited.

[0097] In some embodiments, please refer to Figure 2 The third microwave feed inlet 123a is located on the top wall 1a4 of the cavity, and the third microwave feed inlet 123a includes multiple sub-feed inlets 121a1.

[0098] It is understandable that by feeding microwaves into the cooking cavity 1a through multiple sub-feed inlets 121a1, the microwaves can be evenly distributed, thereby improving the microwave uniformity within the cooking cavity 1a and thus enhancing the cooking effect of the cooking appliance 1.

[0099] It should be noted that the specific distribution of the multiple sub-feed inlets 121a1 of the third microwave feed inlet 123a is not limited.

[0100] For example, please refer to Figure 2 The cavity top wall 1a4 includes four quadrant regions 1a22, each quadrant having at least one sub-feed inlet 121a1. This ensures a uniform distribution of the sub-feed inlets 121a1 across the cavity top wall 1a4, facilitating microwave filling of different locations within the cooking cavity 1a by multiple sub-feed inlets 121a1, thus improving microwave uniformity within the cooking cavity 1a. Furthermore, it allows microwaves fed through the third microwave inlet 123a to cover as much of the cavity top wall 1a4 as possible and radiate heat along the height direction, improving heating uniformity at the top of the food and shortening the heating time.

[0101] It should be noted that the four quadrant regions 1a22 are four quadrant regions 1a22 defined by two coordinate axes in a two-dimensional rectangular coordinate system. Among them, the origin O of the above-mentioned two-dimensional rectangular coordinate system is located on the top side of the center point of the cavity top wall 1a4, that is, the intersection of the diagonals of the cavity top wall 1a4. 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.

[0102] In some embodiments, please refer to Figure 2 and Figure 3The sub-feed inlets 121a1 corresponding to the four quadrant regions 1a22 are arranged axially symmetrically with respect to the coordinate axes and / or centrally symmetrically with respect to the origin of the four quadrant regions 1a22. In this way, the sub-feed inlets 121a1 in the four quadrant regions 1a22 can be evenly distributed, which can further improve the uniformity of microwave distribution in the cooking cavity 1a.

[0103] In some embodiments, please refer to Figure 2 and Figure 3 The first microwave feed inlet 121a and / or the third microwave feed includes a plurality of sub-feed inlets 121a1, each sub-feed inlet 121a1 including at least one sub-feed slot 121a11, and the second microwave feed inlet 122a includes at least one microwave feed slot 122a1. The angle between the extension direction of the sub-feed slot 121a11 and the first direction is a first angle A, and the angle between the extension direction of the microwave feed slot 122a1 and the height direction of the cooking appliance 1 is a second angle B. The values ​​of the first angle A and the second angle B are different.

[0104] It is understandable that the polarization direction of microwaves fed from the feed slot is affected by the extension direction of the slot. By controlling the extension direction of the slot, a specific polarization direction of the microwaves can be achieved. In other words, by defining the numerical relationship between the first included angle A and the second included angle B, the polarization directions of the microwaves fed from the microwave feed slot 122a1 and the microwaves fed from the sub-feed slot 121a11 can be different. This results in microwaves with different polarization directions within the cooking cavity 1a, allowing the food to be cooked within the cooking cavity 1a to be heated by microwaves with different polarization directions, which is beneficial for improving the cooking effect.

[0105] It should be noted that polarization direction refers to the direction of the electric field vector of the microwave in space, that is, the direction of microwave vibration. For example, horizontal polarization means that the microwave signal vibrates in the horizontal direction.

[0106] It should be noted that the specific value of the first included angle A is not limited.

[0107] In some embodiments, please refer to Figure 3 The first included angle A is 35°-55°, i.e., 35°≤A≤55°, for example, 35°, 38°, 40°, 42°, 44°, 46°, 48°, 50°, 52° or 55°. In this way, the angle between the extension direction of the sub-feed slit 121a11 and the first direction is reasonable, so that the microwave fed by the sub-feed slit 121a11 can have a polarization direction of 35°-55°, that is, the angle between the vibration direction of the microwave fed by the sub-feed slit 121a11 and the first direction is 35°-55°, which facilitates the microwave to better fill different positions of the cooking cavity 1a.

[0108] It should be noted that the value of the first included angle A, which is 35°-55°, means that the angle between the extension direction of the feed gap 121a11 and the first direction is (+) 35° to (+) 55° or (-) 55° to (-) 35°.

[0109] It should be noted that the specific value of the second included angle B is not limited.

[0110] In some embodiments, please refer to Figure 4 The value of the second included angle B is 5°-25°, i.e., 5°≤B≤25°, for example, 5°, 8°, 10°, 12°, 14°, 16°, 18°, 20°, 22° or 25°. This ensures that the angle between the extension direction of the microwave feed slit 122a1 and the height direction is reasonable, so that the microwaves fed by the microwave feed slit 122a1 can have a polarization direction of 5°~25°, that is, the angle between the vibration direction of the microwaves fed by the microwave feed slit 122a1 and the height direction is 5°~25°, which facilitates the microwaves to better fill different positions of the cooking cavity 1a.

[0111] It should be noted that the value of the second included angle B, which is 5° to 25°, means that the angle between the extension direction of the microwave feed slot 122a1 and the height direction is (+) 5° to (+) 25° or (-) 25° to (-) 5°.

[0112] In some embodiments, please refer to Figure 2 and Figure 3 The sub-feed inlet 121a1 includes at least two sub-feed slots 121a11, which are intersected. This allows microwaves fed through a single sub-feed inlet 121a1 to exhibit two different polarization directions, facilitating microwave radiation over a larger area. This promotes microwave coverage at different locations within the cooking cavity 1a, improving the uniformity of microwave distribution within the cooking cavity 1a and thus enhancing the cooking effect of the cooking appliance 1.

[0113] For example, the sub-feed inlet 121a1 has a cross structure. Of course, the sub-feed inlet 121a1 can also be other types of waveguide ports.

[0114] It should be noted that the angle between the extension directions of the two sub-feed gaps 121a11 is not limited. For example, it can be a right angle, an obtuse angle, or an acute angle.

[0115] In some embodiments, please continue to refer to Figure 2 and Figure 3The sub-feed slit 121a11 has a dimension of not less than 55 mm along its extension direction and not less than 15 mm along its perpendicular extension direction; and / or, the microwave feed slit 122a1 has a dimension of not less than 60 mm along its extension direction and not less than 15 mm along its perpendicular extension direction. This ensures that the dimensions of the sub-feed slit 121a11 and the microwave feed slit 122a1 are reasonable, facilitating the feeding of microwaves into the cooking cavity 1a through the sub-feed slit 121a11 and the microwave feed slit.

[0116] The above technical solutions include the following: First, the dimension of the sub-feed slot 121a11 along its extension direction is not less than 55mm, and the dimension along the perpendicular extension direction is not less than 15mm; Second, the dimension of the microwave feed slot 122a1 along its extension direction is not less than 60mm, and the dimension along the perpendicular extension direction is not less than 15mm; Third, the dimension of the microwave feed slot 122a1 along its extension direction is not less than 60mm, and the dimension along the perpendicular extension direction is not less than 15mm, and the dimension of the sub-feed slot 121a11 along its extension direction is not less than 55mm, and the dimension along the perpendicular extension direction is not less than 15mm.

[0117] For example, please continue to refer to Figure 2 and Figure 3 The dimension of the sub-feed slot 121a11 along its extension direction is no greater than 100 mm, and the dimension perpendicular to its extension direction is no greater than 30 mm; and / or, the dimension of the microwave feed slot 122a1 along its extension direction is no greater than 120 mm, and the dimension perpendicular to its extension direction is no greater than 30 mm. This ensures that the dimensions of the sub-feed slot 121a11 and the microwave feed slot 122a1 are kept within a reasonable range.

[0118] The above technical solutions include the following: First, the dimension of the sub-feed slot 121a11 along its extension direction is no greater than 100mm, and the dimension along the perpendicular extension direction is no greater than 30mm; Second, the dimension of the microwave feed slot 122a1 along its extension direction is no greater than 100mm, and the dimension along the perpendicular extension direction is no greater than 30mm; Third, the dimension of the microwave feed slot 122a1 along its extension direction is no greater than 100mm, and the dimension along the perpendicular extension direction is no greater than 30mm, and the dimension of the sub-feed slot 121a11 along its extension direction is no greater than 100mm, and the dimension along the perpendicular extension direction is no greater than 30mm.

[0119] In some embodiments, please refer to Figure 1 The cooking utensil 1 also includes a partition. Understandably, the partition has a certain structural strength and can support the food.

[0120] Please refer to Figure 1A portion of the bottom wall 1a2 of the cavity is recessed in a direction away from the cooking cavity 1a, forming a recessed region 1a21. The first microwave feed inlet 121a is located in the recessed region 1a21, and a partition covers the opening of the recessed region 1a21. It can be understood that using the recessed region 1a21 of the partition to accommodate the first waveguide shell 121 can save space inside the partition, making the structure of the cooking appliance 1 more compact.

[0121] It should be noted that the recessed space increases the internal space of the cooking cavity 1a, making the cooking appliance 1 more compact. In this embodiment, microwaves can pass through a partition that prevents moisture in the cooking cavity from entering the first microwave feed inlet 121a. It should also be noted that even without the partition, food can be cooked by placing a container filled with food on the bottom wall of the recessed area 1a21.

[0122] It should be noted that the microwaves from the first microwave feed inlet 121a can pass through the opening in the recessed region 1a21 and heat the food in the cooking cavity 1a.

[0123] The various embodiments / implementations provided in this application can be combined with each other without creating contradictions.

[0124] 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 cooking cavity comprises a cavity sidewall, a cavity top wall, and a cavity bottom wall. The cooking cavity is located within the space formed by the cavity sidewall, the cavity top wall, and the cavity bottom wall. A first microwave feed inlet is provided on the cavity top wall or the cavity bottom wall, a second microwave feed inlet is provided on the cavity sidewall, and a third microwave feed inlet is provided on the cavity top wall, the cavity bottom wall, or the cavity sidewall. The first microwave feed inlet, the second microwave feed inlet, and the third microwave feed inlet are located on different sides of the cooking cavity. Magnetron assembly, used to generate microwaves; A waveguide channel is used to conduct microwaves generated by the magnetron assembly to the cooking cavity through the first microwave feed inlet, the second microwave feed inlet, and the third microwave feed inlet.

2. The cooking utensil according to claim 1, characterized in that, The bottom wall of the cavity is provided with the first microwave feed inlet, and the top wall of the cavity is provided with the third microwave feed inlet.

3. The cooking utensil according to claim 1, characterized in that, The magnetron assembly and the second microwave feed inlet are located on the same side of the cooking cavity.

4. The cooking utensil according to claim 2, characterized in that, The first microwave feed inlet includes multiple sub-feed inlets; the cavity floor wall includes four quadrants, each quadrant having at least one sub-feed inlet; wherein the four quadrants are defined by two coordinate axes in a two-dimensional Cartesian coordinate system; and / or, The third microwave feed inlet includes multiple sub-feed inlets; the cavity top wall includes four quadrants, each quadrant having at least one sub-feed inlet; wherein, the four quadrants are four quadrants defined by two coordinate axes in a two-dimensional rectangular coordinate system.

5. The cooking utensil according to claim 4, characterized in that, The sub-feed entrances 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.

6. The cooking utensil according to claim 1, characterized in that, The first microwave feed inlet is located on the bottom wall of the cavity, and the third microwave feed inlet is located on the top wall of the cavity. The first microwave feed inlet and / or the third microwave feed inlet includes multiple sub-feed inlets, and each sub-feed inlet includes at least one sub-feed slot. The second microwave feed inlet includes at least one microwave feed slot. Wherein, the angle between the extension direction of the sub-feed slit and the first direction is the first angle, and the angle between the extension direction of the microwave feed slit and the height direction of the cooking appliance is the second angle. The values ​​of the first angle and the second angle are different, and the first direction is perpendicular to the height direction of the cooking appliance.

7. The cooking utensil according to claim 6, characterized in that, The sub-feed inlet includes at least two sub-feed slots, which are intersecting; and / or, The first included angle has a value of 35°-55°; and / or, the second included angle has a value of 5°-25°.

8. The cooking utensil according to claim 6, characterized in that, The dimension of the sub-feed slot along its extension direction is not less than 55 mm, and the dimension along the direction perpendicular to its extension direction is not less than 15 mm; and / or, the dimension of the microwave feed slot along its extension direction is not less than 60 mm, and the dimension along the direction perpendicular to its extension direction is not less than 15 mm.

9. The cooking utensil according to claim 1, characterized in that, The cooking appliance includes a waveguide shell assembly located outside the cooking cavity, and the waveguide shell assembly and the cavity wall of the cooking cavity form the waveguide channel.

10. The cooking utensil according to claim 1, characterized in that, The cooking appliance includes a waveguide shell assembly and a waveguide cover assembly, both of which are located outside the cooking cavity, and the waveguide shell assembly and the waveguide cover assembly enclose the waveguide channel; The waveguide cover assembly is provided with multiple through holes, some of which are aligned with the first microwave feed inlet, some of which are aligned with the second microwave feed inlet, and other through holes are aligned with the third microwave feed inlet.

11. The cooking utensil according to claim 9 or 10, characterized in that, The waveguide shell assembly includes a first waveguide shell, a second waveguide shell, and a third waveguide shell connected in sequence. The first waveguide shell and the third waveguide shell both extend along a first direction, and the second waveguide shell extends along the height direction. Wherein, the first direction is perpendicular to the height direction.

12. The cooking utensil according to claim 11, characterized in that, The first waveguide shell, the second waveguide shell, and the third waveguide shell are an integral structure.

13. The cooking utensil according to claim 11, characterized in that, The cooking appliance includes a magnetic mounting bracket, which is disposed on the side of the second waveguide shell away from the cooking cavity. The second waveguide shell has a magnetic control port. The magnetic control component is mounted on the magnetic mounting bracket, and one end of the magnetic control component passes through the magnetic control port and extends into the second waveguide shell.

14. The cooking utensil according to claim 11, characterized in that, The first waveguide shell includes a first platform segment and a first connecting segment. One end of the first connecting segment is connected to the second waveguide shell. The first platform segment is located at the end of the first connecting segment away from the second waveguide shell. In the orthographic projection onto a plane perpendicular to the height direction, the projection of the first microwave feed inlet is located within the projection range of the first platform segment. The dimension of the first platform segment perpendicular to the first direction is larger than the dimension of the first connecting segment perpendicular to the first direction. And / or, The third waveguide shell includes a second platform segment and a second connecting segment. One end of the second connecting segment is connected to the second waveguide shell. The second platform segment is located at the end of the second connecting segment away from the second waveguide shell. In the orthographic projection of the third microwave feed in the plane perpendicular to the height direction, the projection of the third microwave feed inlet is located within the projection range of the second platform segment. The dimension of the second platform segment perpendicular to the first direction is greater than the dimension of the second connecting segment perpendicular to the first direction.

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