Microwave shielding structure, steaming and baking microwave integrated machine and microwave shielding control method

Abstract

The present application relates to a kind of microwave shielding structure, steaming and baking micro integrated machine and microwave shielding control method, including transparent substrate layer, air bag layer, micro deformation layer and gas charging and discharging assembly;Wherein air bag layer is set to one side of transparent substrate layer, air bag layer has multiple micro air bag monomers;Micro deformation layer is set to the side of air bag layer away from transparent substrate layer, micro deformation layer has multiple micro deformation units, and each micro deformation unit is connected with at least one micro air bag monomer;Gas charging and discharging assembly is communicated with micro air bag monomer, for changing the inflation of micro air bag monomer to make microwave shielding structure at least have first morphology and second morphology;In first morphology, micro deformation unit is arranged parallel with transparent substrate layer, in second morphology, micro deformation unit is arranged obliquely with transparent substrate layer.By changing the inflation of micro air bag monomer, the shape of micro deformation layer is adjusted, to change the morphology of microwave shielding structure, realize the adjustment of the shielding ability of microwave shielding structure.

Description

Technical Field

[0001] This invention relates to the field of household appliance technology, and in particular to a microwave shielding structure, a steam oven / microwave combo, and a microwave shielding control method. Background Technology

[0002] Steam ovens typically use 2.4GHz microwaves to heat food. The doors of these ovens usually feature a metal mesh and a blocking groove structure to both suppress microwave leakage and facilitate user observation. Traditional steam oven doors generally use metal mesh plates with uniform apertures, a simple structure that is easy to manufacture. However, observing the oven cavity relies heavily on the light transmittance of the metal mesh, but the aperture size is limited by microwave leakage standards and cannot be increased significantly: typical regulations require that leakage at 5cm from the outer surface of the oven door must not exceed 5mW / cm². 2 Therefore, the mesh used for observation must have very small aperture and density, which also results in a limited field of view for the user and insufficient brightness of the observed image.

[0003] Existing technical solutions include increasing the mesh aperture through electromagnetic interference: This involves adding an electromagnetic interference device outside the metal mesh. The increased aperture size is used to neutralize leaking microwaves with the interfering electromagnetic waves generated by the interference device, similar to electromagnetic interference devices used in examination rooms. However, this type of interference device itself suffers from electromagnetic leakage; even if it meets microwave leakage standards, it fails to meet electromagnetic leakage standards and can interfere with other electronic devices. Another method utilizes the principle of visual persistence to vibrate the metal mesh at high frequency, improving the user's observation effect without changing the aperture. However, the image created by visual persistence is blurry, resulting in a poor user experience. Yet another solution uses magnetohydrodynamics for microwave shielding. Controlling the shape of the magnetohydrodynamic fluid controls the microwave shielding capability. However, this solution requires high sealing and dimensional accuracy of the magnetohydrodynamic container, is complex to assemble, and has high manufacturing costs in actual production. Summary of the Invention

[0004] Therefore, it is necessary to address the issues of electromagnetic leakage, observation effect, and manufacturing cost in current steam ovens that cannot simultaneously address these problems by providing a microwave shielding structure, a steam oven, and a microwave shielding control method.

[0005] A microwave shielding structure includes: a transparent substrate layer, an airbag layer, a micro-deformation layer, and an inflation / deflation assembly; wherein the airbag layer is disposed on one side of the transparent substrate layer, and the airbag layer has a plurality of micro-airbag units; the micro-deformation layer is disposed on the side of the airbag layer away from the transparent substrate layer, and the micro-deformation layer has a plurality of micro-deformation units, each of the micro-deformation units being correspondingly connected to at least one of the micro-airbag units; the inflation / deflation assembly is connected to the micro-airbag units and is used to change the inflation amount of the micro-airbag units so that the microwave shielding structure has at least a first shape and a second shape; in the first shape, the micro-deformation units are arranged parallel to the transparent substrate layer, and in the second shape, the micro-deformation units are arranged obliquely to the transparent substrate layer.

[0006] This solution adjusts the inflation volume of the micro-inflator unit through an inflation / deflation assembly, driving the micro-deformation unit to flexibly switch between a first and a second mode. In the first mode, the micro-deformation unit remains parallel to the transparent substrate. Viewed from one side of the transparent substrate, the micro-deformation layer is flat, and the image is unobstructed and distorted, facilitating the user's observation of objects behind the microwave shielding structure. In the second mode, the micro-deformation unit is tilted relative to the transparent substrate. Multiple micro-deformation units can collectively form a corrugated structure that interferes with microwaves, achieving microwave shielding by weakening microwave energy. This application uses an inflator as the power source for mode switching, eliminating the need for complex electromagnetic drives or mechanical transmission mechanisms. The structure is simple and compact, with fewer parts, facilitating mass production and assembly, and significantly reducing manufacturing costs. At the same time, the inflator drive response is gentle, the mode switching is smooth and reliable, and no additional electromagnetic radiation is generated, balancing observation convenience and microwave shielding safety.

[0007] In one embodiment, the microwave shielding structure further has a third form, in which the angle between the micro-deformation unit and the transparent substrate is greater than the angle between the micro-deformation unit and the transparent substrate when the microwave shielding structure is in the second form.

[0008] With this configuration, by designing the third form, the tilt angle between the micro-deformation unit and the transparent substrate is further increased, and the weakening effect of the corrugated structure on microwave energy is further enhanced, thereby improving the shielding capability of the microwave shielding structure; moreover, it can be achieved simply by increasing the inflation volume of the micro-airbag unit, and the structure and control logic are simple and reliable.

[0009] In one embodiment, the airbag layer includes a grid plate and a transparent film, the grid plate being fixed on the transparent substrate to form a plurality of air cavities with the transparent substrate, and the transparent film covering the air cavities to form the micro-airbag unit.

[0010] This design, which uses a grid plate and a transparent film to form an air cavity, eliminates the need for an additional independent airbag shell, simplifies the overall structure, helps reduce manufacturing costs, and ensures the consistency of size and arrangement of multiple micro-airbag units with the rigid structure of the grid plate.

[0011] In one embodiment, the micro-deformation layer abuts against the transparent film to press the transparent film against the grid plate.

[0012] This configuration allows the micro-deformation layer to abut against the transparent film and press it firmly against the grid plate, enhancing the airtightness and structural stability of the airbag layer, preventing the micro-deformation unit morphology from becoming unstable due to gas leakage, and improving the reliability of the microwave shielding structure during long-term operation.

[0013] In one embodiment, the micro-deformation layer includes a fixing plate and a spring sheet. The fixing plate abuts against the transparent film and has a clearance hole corresponding to the micro-airbag unit. The spring sheet is disposed in the clearance hole.

[0014] This design, by incorporating the micro-deformation layer into a structure with clearance holes on a fixed plate and spring clips within those clearance holes, facilitates production. In actual manufacturing, the spring clip structure can be formed using a punching method.

[0015] In one embodiment, the spring is fixedly connected to the transparent film.

[0016] With this configuration, the spring is fixedly connected to the transparent film, ensuring that the spring can deform synchronously with the inflation and deflation of the airbag. This improves the consistency and accuracy of the shape switching of each micro-deformation unit. In addition, by further reducing the amount of air in the airbag, the spring can be tilted toward the transparent base layer, allowing the microwave shielding structure to present other shapes.

[0017] In one embodiment, the grid plate also has a pipe hole connecting two adjacent air chambers, and the inflation / deflation assembly includes an inflation / deflation source and a gas distribution pipe passing through the pipe hole. In each air chamber, the gas distribution pipe has at least one vent hole.

[0018] This configuration allows for centralized air supply to multiple air chambers via pipe holes and distribution pipes, enabling each micro-airbag to inflate and deflate synchronously. This ensures the synchronicity of the morphological switching of each micro-deformation unit, and the inflation system has a compact structure and a reasonable layout.

[0019] In one embodiment, the inflation / deflation assembly further includes a sealing element that blocks the vent hole to create different partitions in the airbag layer.

[0020] With this configuration, the sealing components can selectively block the vents, creating independent zones within the airbag layer. Each zone can be independently controlled for inflation and deflation, thereby enabling the zonal morphology adjustment of the microwave shielding structure to adapt to the differentiated shielding and observation needs of different areas.

[0021] In one embodiment, a steam oven / grill combo includes: an inner cavity assembly; a door assembly installed on the inner cavity assembly, the door assembly having a viewing window; a microwave shielding structure covering the viewing window; and a distance sensor communicatively connected to the microwave shielding structure, the distance sensor being used to detect the distance between a user and the microwave shielding structure.

[0022] With this setup, the distance sensor can detect the distance between the user and the door assembly in real time, providing an accurate trigger for the switching of the microwave shielding structure's form, enabling intelligent automatic control without manual operation by the user, and significantly improving ease of use and safety.

[0023] In one embodiment, a microwave shielding control method includes: detecting the distance between a user and the microwave shielding structure; when the distance is greater than a first preset distance, controlling the microwave shielding structure to be in a first state; and when the distance is less than or equal to the first preset distance, controlling the microwave shielding structure to be in a second state.

[0024] This setup automatically switches the microwave shielding structure's form based on the user's distance. When the user moves away, the shielding structure switches to the first state, allowing the user to easily observe the food behind it. When the user approaches the shielding structure, considering that the closer to the microwave source, the greater the microwave radiation energy, the shielding structure switches to the second state to avoid affecting the user. This weakens the microwave energy and reduces leakage. In this state, the shielding structure also blocks light, obstructing the user's view. If the user wants to see the object behind the shielding structure, they must move away, thus forcing the user to move away from the shielding structure to observe, ensuring user safety. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this application or the conventional technology, the drawings used in the description of the embodiments or the conventional technology will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the structure of a steam oven / grill combo machine according to one embodiment of this application.

[0027] Figure 2for Figure 1 Exploded view of the middle door assembly.

[0028] Figure 3 for Figure 2 A schematic diagram of the exploded structure of a microwave shielding structure.

[0029] Figure 4 for Figure 3 A magnified view of the area at point X in the middle.

[0030] Figure 5 for Figure 3 A magnified view of the area at point Y in the middle.

[0031] Figure 6 This is a schematic diagram of the partitioning of the micro-deformation layer in one embodiment of this application.

[0032] Figure 7 This is a schematic diagram of the partitioning of the micro-deformation layer in another embodiment of this application.

[0033] Figure label: 100. Microwave shielding structure; 110. Transparent substrate layer; 120. Airbag layer; 121. Grid plate; 122. Transparent film; 130. Micro-deformation layer; 1301. Clearance hole; 131. Fixing plate; 132. Spring; 140. Inflation / depression assembly; 141. Gas distribution pipe; 1411. Vent hole; 142. Inflation / depression source; 200. Door assembly; 201. Viewing window; 210. Frame component; 220. Protective glass panel; 230. Outer glass panel; 240. Metal shielding mesh structure; 250. Inner glass panel; 300. Inner liner components; 400. Distance sensor. Detailed Implementation

[0034] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0035] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on the other component or there may be an intermediate component. When a component is considered to be "connected to" another component, it can be directly connected to the other component or there may be an intermediate component present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application's specification are for illustrative purposes only and do not represent the only possible implementation.

[0036] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0037] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature and the second feature are in indirect contact through an intermediate medium. Furthermore, "above," "over," and "on top" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0038] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and / or" as used in this application includes any and all combinations of one or more of the associated listed items.

[0039] Currently, most steam ovens still use a fixed metal mesh plate to prevent microwave leakage at the viewing window 201 of the door assembly 200. While this ensures compliance with microwave leakage regulations to the greatest extent possible, it sacrifices the user's viewing experience.

[0040] Existing improvement solutions, such as adding electromagnetic interference devices or utilizing the persistence of vision effect, cannot effectively alleviate the contradiction between microwave leakage and viewing experience. Regarding the solution of adding electromagnetic interference devices, these devices themselves have electromagnetic leakage issues, thus requiring further microwave leakage verification and testing. Furthermore, they can easily interfere with the normal operation of other electronic components. As for the solution utilizing the persistence of vision effect, it typically involves adding a vibration component to cause the metal mesh plate to vibrate at high frequency. This can improve the user's viewing experience without changing the aperture, but this improvement is very limited. For example, the image resulting from the persistence of vision is relatively blurry, and the high-frequency vibration noise is also quite significant, leading to a poor user experience.

[0041] Another approach utilizes magnetohydrodynamics to achieve dynamic shielding. This approach leverages the dual function of magnetohydrodynamics in expressing magnetic field strength and shape, as well as shielding microwaves. By controlling the position and aggregation shape of the magnetohydrodynamics with a magnetic field, the shielding capability can be dynamically adjusted. However, this approach requires high sealing and dimensional accuracy of the magnetohydrodynamic container, is complex to assemble, and has high manufacturing costs in actual production.

[0042] To address the various problems existing in the above-mentioned microwave shielding solutions, this application proposes a microwave shielding structure 100, a steam oven / microwave oven, and a microwave shielding control method.

[0043] Combination Figure 1 , Figure 2 and Figure 3 In one embodiment of this application, the steam oven includes an inner cavity assembly 300, a door assembly 200, a microwave shielding structure 100, and a distance sensor 400. The door assembly 200 is installed on the inner cavity assembly 300 and has a viewing window 201. The microwave shielding structure 100 covers the viewing window 201. The distance sensor 400 is communicatively connected to the microwave shielding structure 100 and is used to detect the distance between the user and the microwave shielding structure 100.

[0044] Specifically, refer to Figure 2 The door assembly 200 includes a frame member 210 and a protective glass plate 220, an outer glass plate 230, a metal shielding mesh structure 240, and an inner glass plate 250, which are mounted on the frame member 210 and stacked thereon; wherein, the microwave shielding structure 100 provided in this application is disposed between the outer glass plate 230 and the metal shielding mesh structure 240; the distance sensor 400 is mounted on the frame member 210, specifically on the outside of the door handle on the frame member 210.

[0045] refer to Figure 3 and Figure 4The microwave shielding structure 100 provided in this application includes a transparent substrate layer 110, an airbag layer 120, a micro-deformation layer 130, and an inflation / deflation assembly 140. The airbag layer 120 is disposed on one side of the transparent substrate layer 110 and has multiple micro-airbag units. The micro-deformation layer 130 is disposed on the side of the airbag layer 120 away from the transparent substrate layer 110 and has multiple micro-deformation units, each of which is connected to at least one micro-airbag unit. The inflation / deflation assembly 140 is connected to the micro-airbag units and is used to change the inflation amount of the micro-airbag units so that the microwave shielding structure 100 has at least a first shape and a second shape. In the first shape, the micro-deformation units are arranged parallel to the transparent substrate layer 110, and in the second shape, the micro-deformation units are arranged obliquely to the transparent substrate layer 110.

[0046] Based on the microwave shielding structure 100 described above, this application uses the airbag layer 120 combined with the inflation / deflation component 140 to change the shape of the micro-deformation layer 130, thereby adjusting the microwave energy attenuation capability. In other words, the micro-deformation layer 130 is used to change the inflation volume of the micro-airbag units in the corresponding airbag layer 120. Since the airbag driving response is gentle, it can ensure that the microwave shielding structure 100's shape switching is reliable and stable, without generating additional electromagnetic radiation. Therefore, while realizing the dynamic adjustment of the microwave shielding capability of the microwave shielding structure 100, the safety of microwave shielding is also taken into account.

[0047] Combination Figure 2 It is worth noting that this application does not eliminate the existing metal mesh shielding structure, but sets up a microwave shielding structure 100 with dynamic shielding capability in front of the metal mesh shielding structure. The microwave shielding structure 100 shares part of the shielding task of the metal mesh shielding structure. Therefore, the mesh diameter of the metal mesh shielding structure can be designed to be larger than that of the ordinary metal mesh shielding structure, thereby increasing its light transmission capability and making it convenient for users to observe the cooking status of the food in the inner pot from a safe distance.

[0048] Furthermore, the microwave shielding structure 100 also has a third form. In the third form, the angle between the micro-deformation unit and the transparent substrate 110 is greater than the angle between the micro-deformation unit and the transparent substrate 110 when the microwave shielding structure 100 is in the second form. By designing the third form, the tilt angle between the micro-deformation unit and the transparent substrate 110 is further increased, and the attenuation effect of the corrugated structure on microwave energy is further enhanced, thereby improving the shielding capability of the microwave shielding structure 100. Moreover, this can be achieved simply by increasing the inflation volume of the micro-airbag unit, and the structure and control logic are both simple and reliable.

[0049] refer to Figure 4In one embodiment of this application, the airbag layer 120 includes a grid plate 121 and a transparent film 122. The grid plate 121 is fixed on the transparent substrate layer 110 to form multiple air cavities with the transparent substrate layer 110. The transparent film 122 covers the air cavities to form micro-airbag units. The structure of forming air cavities by the grid plate 121 and the transparent film 122 eliminates the need for an additional independent airbag shell, simplifies the overall structural hierarchy, helps reduce manufacturing costs, and the rigid structure of the grid plate 121 ensures the consistency of the size and arrangement of the multiple micro-airbag units.

[0050] Furthermore, in one embodiment of this application, the micro-deformation layer 130 abuts against the transparent film 122 and presses it firmly against the grid plate 121, enhancing the airtightness and structural stability of the airbag layer 120, preventing morphological instability of the micro-deformation unit caused by gas leakage, and improving the long-term reliability of the microwave shielding structure 100. The micro-deformation layer 130 abuts against the transparent film 122 to press the transparent film 122 firmly against the grid plate 121.

[0051] Furthermore, the grid plate 121 also has a pipe hole connecting two adjacent air chambers. The inflation / deflation assembly 140 includes an inflation / deflation source 142 and a distribution pipe 141 passing through the pipe hole. In each air chamber, the distribution pipe 141 has at least one vent hole 1411. The pipe hole and the distribution pipe 141 enable centralized air supply to multiple air chambers, allowing each micro-airbag unit to inflate and deflate synchronously, ensuring the synchronicity of the morphological switching of each micro-deformation unit. Moreover, the inflation system has a compact structure and a reasonable layout.

[0052] In this application, the size of the grid plate 121 has been enlarged for the convenience of illustrating the shape of the grid plate 121 and its internal structure. It is understood that in actual implementation, the size of each hole of the grid plate 121 is smaller, and can correspond one-to-one with each spring piece 132 of the micro-deformation layer.

[0053] In an implementable embodiment of this application, when the microwave shielding structure 100 is in the second configuration, the multiple micro-deformation units of the micro-deformation layer 130 can also be designed in sections to achieve ripple interference: For example, in Figure 3 In the airbag layer 120 shown, one hole in the grid plate 121 is a partition, and each partition can correspond to multiple micro-deformation units in the micro-deformation layer 130, thus forming a structure similar to Figure 6 The checkerboard grid pattern has different orientations for the micro-deformation units in adjacent sections. For example, the micro-deformation layer 130 may include a plurality of reflective strips arranged sequentially, with adjacent reflective strips having different orientations; For example, refer to Figure 7The micro-deformation layer 130 may include multiple reflective strips arranged sequentially from the center to the periphery, with adjacent reflective strips having different orientations. It is worth noting that, in order to make the micro-deformation layer 130 present a strip-shaped reflective band or reflective ring, or a more complex target shape, the material, length, and shape of the spring sheet 132 of the micro-deformation unit in different zones can be designed differently. This allows for different deformation responses when the air pressure of the micro-inflator unit is consistent. In other words, without a complex air circuit system, the inflation / deflation assembly 140 can uniformly supply pressure to all micro-inflator units, enabling the micro-deformation layer 130 to present a complex shape. For example, the length of the spring sheet 132 in different zones can be different, and the shape of the spring sheet 132 can be cantilevered, spiral, or U-shaped, depending on the actual requirements.

[0054] In one implementable embodiment of this application, the inflation / deflation assembly 140 further includes a sealing element that blocks the vent 1411, thereby creating different partitions within the airbag layer 120. The sealing element can selectively block the vent 1411, forming independent partitions within the airbag layer 120. Each partition can be independently controlled for inflation / deflation, thus enabling the partitioning morphology adjustment of the microwave shielding structure 100 to adapt to the differentiated shielding and observation requirements of different regions.

[0055] refer to Figure 5 In one embodiment of this application, the micro-deformation layer 130 includes a fixing plate 131 and a spring piece 132. The fixing plate 131 abuts against the transparent film 122 and has a clearance hole 1301 corresponding to the micro-airbag unit. The spring piece 132 is disposed in the clearance hole 1301 to form a micro-deformation unit. By designing the micro-deformation layer 130 with a clearance hole 1301 on the fixing plate 131 and a spring piece 132 disposed in the clearance hole 1301, production is facilitated. In actual manufacturing, the spring piece 132 structure can be formed by punching. In this embodiment of this application, the multiple micro-deformation units in the micro-deformation layer 130 present a fish scale plate structure. It is understood that in other embodiments, the micro-deformation unit may also present other shapes, such as a ring antenna structure disposed at the clearance hole 1301, a cantilever antenna structure, etc.

[0056] In one possible embodiment of this application, the spring piece 132 is fixedly connected to the transparent film 122. This fixed connection ensures that the spring piece 132 can deform synchronously with the inflation and deflation of the airbag, improving the consistency and accuracy of the shape switching of each micro-deformation unit. Furthermore, by further reducing the amount of air in the airbag, the spring piece 132 can be tilted towards the transparent substrate layer 110, allowing the microwave shielding structure 100 to exhibit other shapes.

[0057] Based on the microwave shielding structure 100 and the steam oven / microwave combo appliance of this application, this application also provides a microwave shielding control method, specifically including the following steps: The distance between the user and the microwave shielding structure 100 is detected; when the distance is greater than a first preset distance, the microwave shielding structure 100 is controlled to be in a first state. When the distance is less than or equal to the first preset distance, the microwave shielding structure 100 is controlled to be in the second state.

[0058] Furthermore, when the distance is less than or equal to the second preset distance, the microwave shielding structure 100 is controlled to be in the third state, further enhancing the microwave shielding ability of the microwave shielding structure 100 to shield microwaves.

[0059] It is understandable that the microwave shielding structure 100 can also have a fourth, fifth, or even more forms. Apart from the first form, the difference between the other forms may only be the tilt angle between the micro-deformation unit and the transparent substrate 110. The microwave shielding control method can achieve multi-level adjustment based on the different forms of the microwave shielding structure 100, and can even achieve dynamic adjustment after calibration. This is closer to the microwave propagation attenuation law and ensures that microwave leakage is effectively controlled.

[0060] The smart appliance equipped with the microwave shielding structure 100 has a smart voice control module, which includes a controller, a voice receiving module, and a voice parsing module. The voice receiving module receives user commands, and the voice parsing module parses the commands. Based on the parsed commands, the controller controls the microwave shielding structure 100 to perform corresponding operations, thereby realizing the intelligent control of the microwave shielding structure 100 and improving the user experience of using the smart appliance.

[0061] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0062] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the scope of protection of this application. Therefore, the patent protection scope of this application should be determined by the appended claims.

Claims

1. A microwave shielding structure, characterized in that, include: Transparent substrate (110); An airbag layer (120) is disposed on one side of the transparent base layer (110), and the airbag layer (120) has a plurality of micro-airbag units; A micro-deformation layer (130) is disposed on the side of the airbag layer (120) away from the transparent substrate layer (110). The micro-deformation layer (130) has a plurality of micro-deformation units, and each micro-deformation unit is connected to at least one micro-airbag unit. An inflation / deflation assembly (140) is connected to the micro-airbag unit and is used to change the inflation amount of the micro-airbag unit so that the microwave shielding structure (100) has at least a first shape and a second shape. In the first configuration, the micro-deformation unit is arranged parallel to the transparent substrate layer (110). In the second configuration, the micro-deformation unit is arranged at an angle to the transparent substrate layer (110).

2. The microwave shielding structure according to claim 1, characterized in that, The microwave shielding structure (100) also has a third form in which the angle between the micro-deformation unit and the transparent substrate (110) is greater than the angle between the micro-deformation unit and the transparent substrate (110) when the microwave shielding structure (100) is in the second form.

3. The microwave shielding structure according to claim 1 or 2, characterized in that, The airbag layer (120) includes a grid plate (121) and a transparent film (122). The grid plate (121) is fixed on the transparent base layer (110) to form a plurality of air cavities with the transparent base layer (110). The transparent film (122) is covered on the air cavities to form the micro airbag unit.

4. The microwave shielding structure according to claim 3, characterized in that, The micro-deformation layer (130) abuts against the transparent film (122) to press the transparent film (122) against the grid plate (121).

5. The microwave shielding structure according to claim 4, characterized in that, The micro-deformation layer (130) includes a fixing plate (131) and a spring sheet (132). The fixing plate (131) abuts against the transparent film (122) and has a clearance hole (1301) corresponding to the micro-airbag unit. The spring sheet (132) is disposed in the clearance hole (1301).

6. The microwave shielding structure according to claim 5, characterized in that, The spring sheet (132) is fixedly connected to the transparent film (122).

7. The microwave shielding structure according to claim 3, characterized in that, The grid plate (121) also has a pipe hole connecting two adjacent air chambers. The inflation / deflation assembly (140) includes an inflation / deflation source (142) and a gas distribution pipe (141) passing through the pipe hole. In each air chamber, the gas distribution pipe (141) has at least one vent hole (1411).

8. The microwave shielding structure according to claim 7, characterized in that, The inflation / deflation assembly (140) also includes a sealing element that blocks the vent (1411) so that the airbag layer (120) has different partitions.

9. A steam oven / grill combo, characterized in that, include: Inner liner assembly (300); A door assembly (200) is mounted on the inner liner assembly (300), the door assembly (200) having a viewing window (201); and The microwave shielding structure (100) as described in any one of claims 1-8, wherein the microwave shielding structure (100) covers the viewing window (201). A distance sensor (400) is communicatively connected to the microwave shielding structure (100) and is used to detect the distance between the user and the microwave shielding structure (100).

10. A microwave shielding control method, applied to the microwave shielding structure (100) as described in any one of claims 1-8, characterized in that, include: Detect the distance between the user and the microwave shielding structure (100); When the distance is greater than the first preset distance, the microwave shielding structure (100) is controlled to be in the first state; When the distance is less than or equal to the first preset distance, the microwave shielding structure (100) is controlled to be in the second state.

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