Self-circulating air door plate

Abstract

The invention discloses a door plate capable of achieving self-circulation of air. The door plate comprises a ventilation plate, a veneer, a frame assembly and a circulation assembly. The frame piece, the veneer and the ventilation plate form a cubic containing space. The frame assembly comprises a frame piece and a corner connector. The frame piece comprises an upper frame piece, a lower frame piece, a left frame piece and a right frame piece; the upper frame piece, the left frame piece, the lower frame piece and the right frame piece are all hollow trapezoidal plates; the ventilation plate is connected with one side of the upper frame piece, one side of the left frame piece, one side of the lower frame piece and one side of the right frame piece. The veneer is connected with the sides, away from the ventilation plate, of the upper frame part, the left frame part, the lower frame part and the right frame part. The frame piece, the veneer and the ventilation plate form a cubic containing space. The circulating assembly comprises a fan, a sterilizer, a filter and a controller; the fan is positioned in the cubic accommodating space, and the sterilizer is glued in the lower frame piece; the filter is glued to the middle of the lower frame piece. The air circulation purification design is adopted, so that accumulation of pollutants in the cabinet is avoided; and a narrow cabinet door structure can be adapted.

Description

Technical Field

[0001] This invention relates to the field of furniture and home furnishing technology, and more specifically, to a self-circulating air door panel. Background Technology

[0002] In the field of furniture and home technology, cabinet doors are only used to meet the needs of blocking external pollutants and maintaining a stable internal environment. Traditional cabinet doors, such as those for precision instruments, hazardous chemicals, and display cases, rely primarily on physical sealing structures for isolation, such as sealing strips and glass hinges. These can only block large particles and cannot solve the problem of air circulation and purification within the cabinet. This leads to dust accumulation, the buildup of harmful gases, or humidity imbalance, which in turn affects the storage safety and lifespan of precision instruments, hazardous chemicals, food, and other items inside the cabinet. Some improved solutions add independent air purification devices inside the cabinet, but the purification system is a separate design from the cabinet door, requiring additional cabinet space. Furthermore, when the cabinet door is open, it cannot form an effective airflow barrier, allowing external pollutants to easily intrude, resulting in poor synergy between sealing and purification. Another solution uses external ventilation or independent air curtain devices to assist in sealing, but these have inherent shortcomings: traditional external ventilation systems can only transfer pollutants, easily causing secondary pollution; independent air curtain devices are mostly adapted to building doors and are not optimized for cabinet door scenarios, are too large, and cannot be integrated with the cabinet door for installation, making them unsuitable for use in confined cabinet spaces. In addition, although existing intelligent purification equipment has a circulating filtration function, it lacks an integrated design with the cabinet door sealing structure, and cannot achieve linkage control of preventing intrusion when the door is open and self-purification when the door is closed.

[0003] Prior art 1 (Application No.: 2025111262203, Application Date: 2025.08.12) discloses a concealed nail hole aluminum frame glass door panel, including a door leaf frame 01 and a frame decorative strip 02. The door leaf frame 01 includes a first frame 011, a second frame 012, a third frame 013, and a fourth frame 014. The first frame 011, the second frame 012, the third frame 013, and the fourth frame 014 include frame receiving members and frame connecting members. The housing includes a first receiving side panel, a second receiving side panel, a third receiving side panel, and a fourth receiving side panel; the frame decorative strip 02 includes a first decorative profile 021, a second decorative profile 022, a third decorative profile 023, and a fourth decorative profile 024. The first decorative profile 021 covers the first frame 011, the second decorative profile 022 covers the second frame 012, the third decorative profile 023 covers the third frame 013, and the fourth decorative profile 024 covers the fourth frame 014. The first U-shaped structure, the inverted T-shaped part in the frame connector, the connecting hole, and the fasteners are directly hidden in the frame housing between the first receiving side panel and its corresponding frame decorative strip 02. The above solution has the following technical problems: First, it only optimizes the physical sealing and appearance design, but does not solve the problem of air circulation and purification inside the cabinet, and cannot cope with the problems of dust accumulation and harmful gas accumulation, and cannot meet the dynamic protection requirements of precision instrument cabinets, display cabinets, etc.

[0004] Prior art 2 (application number: 2020230495447, application date: 2020.12.17) discloses a stable, handle-free aluminum frame glass door panel, including vertical frames, horizontal frames, two sets of left connector assemblies, two sets of right connector assemblies, flat-head hexagonal screws, and glass. The glass is characterized in that both ends are slidably installed in the grooves of the two horizontal frames, and both sides are slidably installed in the door panel grooves of the two vertical frames. One end of each horizontal frame is connected to the left connector assembly, and the other end is connected to the right connector assembly. One end of each vertical frame is fixedly connected to the left connector assembly using flat-head hexagonal screws, and the other end is fixedly connected to the right connector assembly using flat-head hexagonal screws. This solution only focuses on the connection structure between the vertical and horizontal frames and the connector assemblies, without incorporating any air purification or circulation module, thus failing to address the problem of pollutant accumulation inside the cabinet; it also does not address the issues of preventing intrusion when the door is open and self-purification when the door is closed. In addition, the above solution has the following technical problem three: the split structure design does not reserve space for the installation of the purification module. If an additional independent purification device is added, it will occupy the cabinet storage space and cannot achieve linkage control with the cabinet door.

[0005] Prior art 3 (application number: 2011204407998, application date: 2011.11.09) discloses a glass door panel with a hidden frame structure and an integrated kitchen cabinet thereof. The glass door panel mainly consists of a frame made of aluminum and glass panels inlaid on the frame, with the glass panels and frame connected as an integral structure. The integrated kitchen cabinet composed of the glass door panel with the hidden frame structure includes a countertop, a cabinet body, and cabinet doors made of glass panels inlaid on the frame. The countertop is connected to the upper surface of the cabinet body, while the cabinet doors are connected to the front end of the side wall of the cabinet body and can rotate around a connecting axis, forming a cavity inside the cabinet body to accommodate placed items. The above solution cannot address the problem of harmful gas and dust accumulation inside the cabinet, and is not suitable for precision instrument or food storage scenarios; external pollutants can easily enter when the cabinet door is opened, and the sealing and purification synergy is poor; if existing independent air curtains or ventilation systems are used, they cannot be integrated due to their large size and are prone to secondary pollution, failing to meet the needs of use in small cabinet spaces.

[0006] In summary, existing door panels have two main problems: 1) they lack air circulation and purification design, leading to easy accumulation of pollutants inside the cabinet; 2) they cannot be adapted to narrow cabinet door structures. Therefore, solving these two problems has become an urgent technical issue in this field. Summary of the Invention

[0007] In view of this, the present invention provides a self-circulating air door panel to solve the following problems: 1. Existing door panels lack air circulation and purification design, which leads to the easy accumulation of pollutants inside the cabinet; 2. They cannot be adapted to narrow cabinet door structures.

[0008] This application provides a self-circulating air door panel, comprising: a rectangular ventilation panel, a rectangular decorative panel, a hollow rectangular ring frame assembly, and a circulation assembly;

[0009] The ventilation panel is set parallel to the decorative panel, and the ventilation panel is set on the side closer to the inside of the cabinet; the ventilation panel has at least 10 circular ventilation holes along its thickness direction; along the thickness direction of the ventilation panel, the orthographic projection of the ventilation panel is located within the orthographic projection of the decorative panel.

[0010] The frame assembly includes frame pieces and corner brackets; the frame pieces include upper and lower frame pieces that are parallel to each other, as well as left and right frame pieces that are parallel to each other, and the upper, left, lower and right frame pieces are connected end to end to form a hollow rectangular ring; the vertical line of the hollow rectangular ring coincides with the vertical line of the ventilation panel and / or the decorative panel.

[0011] The ventilation panel is glued to the side of the hollow rectangular ring closest to the cabinet body. The four sides of the ventilation panel are respectively connected to the sides of the upper frame, left frame, lower frame, and right frame away from the decorative panel. The decorative panel is glued to the edge of the hollow rectangular ring away from the cabinet body. The four sides of the decorative panel are respectively connected to the sides of the upper frame, left frame, lower frame, and right frame away from the ventilation panel. There is a gap between the decorative panel and the ventilation panel. The frame, decorative panel, and ventilation panel form a cubic space.

[0012] The upper frame, left frame, lower frame, and right frame are all hollow trapezoidal plates. The projection shape of the hollow trapezoidal plate along the thickness direction of the ventilation plate is an isosceles trapezoid, and the orthographic projection along the direction from the left frame to the right frame is a rectangle. The hollow trapezoidal plate includes mutually parallel inner and outer side plates, as well as mutually parallel grooved plates and adhesive plates. Along the thickness direction of the ventilation plate, the side of the inner side plate closest to the decorative panel and the side of the outer side plate closest to the decorative panel are integrally connected to the opposite sides of the adhesive plate. The length of the adhesive plate is the same as the maximum length of the outer or inner side plate. The grooved plate is integrally set between the inner and outer side plates, and the grooved plate, part of the inner side plate, and part of the outer side plate form a first C-shaped hand groove. The groove opening of the first C-shaped hand groove faces the direction away from the adhesive plate.

[0013] An outer limiting strip extending along its length is integrally provided on the side of the outer side plate away from the adhesive board and on the side away from the inner side plate; the outer limiting strip is in the shape of an isosceles trapezoid; an inner limiting strip extending along its length is glued to the side of the inner side plate away from the adhesive board and on the side away from the outer side plate; the inner limiting strip is in the shape of an isosceles trapezoid, and the maximum length of both the inner and outer limiting strips is the same as the maximum length of the inner or outer side plate;

[0014] An integral snap-fit ​​groove is provided between the outer side panel and the inner side panel, and the snap-fit ​​groove is located between the grooved plate and the adhesive plate; along the length direction of the hollow trapezoidal plate, the snap-fit ​​groove has the same length as the hollow trapezoidal plate; the snap-fit ​​groove has a rectangular ventilation gap along the width direction of the hollow trapezoidal plate.

[0015] The corner brackets include upper left, upper right, lower left, and lower right corner brackets. These brackets have the same structure, all being L-shaped blocks. The two ends of the upper left corner bracket along its length are respectively inserted into one end of the upper frame's locking slot and one end of the left frame's locking slot. The two ends of the lower left corner bracket along its length are respectively inserted into the other end of the left frame's locking slot and one end of the lower frame's locking slot. The two ends of the lower right corner bracket along its length are respectively inserted into the other end of the lower frame's locking slot and one end of the right frame's locking slot. The two ends of the upper right corner bracket along its length are respectively inserted into the other end of the right frame's locking slot and the other end of the upper frame's locking slot.

[0016] The adhesive plate of the lower frame has rectangular ventilation holes; along the height direction of the ventilation plate, the orthographic projection of the ventilation holes is located between the orthographic projection of the decorative panel and the orthographic projection of the ventilation plate; the upper pull groove plate of the lower frame has round-headed rectangular holes, and a dustproof and breathable plug is elastically engaged in the round-headed rectangular holes.

[0017] The circulation assembly includes a fan, a disinfection device, a filter, and a controller; the fan, disinfection device, and filter are all electrically connected to the controller; the lower frame has a circular power connection hole in its pull groove, through which the fan, disinfection device, and filter are connected to an external power source.

[0018] The fan is located within the cubic enclosure, with one wide side of it glued to the side of the ventilation panel closest to the decorative panel; the side of the fan closest to the lower frame is glued to and connected to the disinfection device; the side of the disinfection device furthest from the fan is glued to the side of the lower frame's adhesive plate furthest from its grooved plate; along the height direction of the ventilation panel, the orthographic projection of the ventilation hole is located within the orthographic projection of the disinfection device; the filter is glued to the middle of the lower frame's snap-fit ​​groove; along the height direction of the ventilation panel, the orthographic projection of the round-headed rectangular hole is located within the orthographic projection of the filter.

[0019] Optionally, the inner limiting strip has an L-shaped groove on the side near the adhesive plate and the side near the inner side plate. The L-shaped groove and the inner side plate form a rectangular inner fixing groove with the opening facing the adhesive plate.

[0020] The inner fixing grooves of the upper frame, the left frame, the lower frame, and the right frame are respectively engaged with the four sides of the ventilation plate along its periphery.

[0021] Optionally, the cross-sections of the upper left, upper right, lower left, and lower right corner brackets perpendicular to their length direction are all I-shaped, and their orthographic projections along the thickness direction of the ventilation plate are all first L-shaped; the snap-fit ​​groove includes four L-shaped strips; the cross-sections of the L-shaped strips perpendicular to their length direction are second L-shaped; two of the L-shaped strips are glued and fixed to the side of the outer side plate near the inner side plate along the length extension direction of the outer side plate, and their inner right angles face each other; the other two L-shaped strips are glued and fixed to the side of the inner side plate near the outer side plate along the length extension direction of the inner side plate, and their inner right angles face each other; there is a ventilation gap between the two L-shaped strips on the outer side plate and the two L-shaped strips on the inner side plate; along the thickness direction of the ventilation plate, the orthographic projections of the two L-shaped strips on the outer side plate and the orthographic projections of the two L-shaped strips on the inner side plate coincide with each other;

[0022] Along the thickness direction of the ventilation plate, four circular corner code holes are provided for the upper left corner code, upper right corner code, lower left corner code, and lower right corner code. The four circular corner code holes are evenly distributed along the length direction of the first L-shape. Four circular corner code fixing holes are provided for the outer side plate at the corresponding corner code hole positions. 2 is a positive integer.

[0023] The two corner bracket fixing holes of the upper frame and the two corner bracket fixing holes of the left frame are bolted together with the four corner bracket holes of the upper left corner bracket; the two corner bracket fixing holes of the lower frame and the two corner bracket fixing holes of the left frame are bolted together with the four corner bracket holes of the lower left corner bracket; the two corner bracket fixing holes of the upper frame and the two corner bracket fixing holes of the right frame are bolted together with the four corner bracket holes of the upper right corner bracket; the two corner bracket fixing holes of the lower frame and the two corner bracket fixing holes of the right frame are bolted together with the four corner bracket holes of the lower right corner bracket.

[0024] Optionally, the dustproof and breathable plug includes a rounded rectangular strip and a rectangular elastic block; the rounded rectangular strip is parallel to and engaged in the rounded rectangular hole, and is on the same horizontal plane as the rounded rectangular hole; the rounded rectangular strip has at least 3 rectangular ventilation holes along its thickness direction.

[0025] The elastic blocks are integrated and set on the adhesive plate side of the round-headed rectangular strip near the lower frame; eight elastic blocks are symmetrically arranged along the periphery of the round-headed rectangular strip; the maximum distance between two symmetrical elastic blocks is greater than the length of the connecting line of the round-headed rectangular strip at this point.

[0026] Optionally, the cross-sectional shape of the elastic block perpendicular to the periphery of the rounded rectangular strip is a third L-shape, and the third L-shape of the elastic block and the rounded rectangular strip form a second C-shaped structure, with the orientation of the second C-shaped structure away from the central axis of the rounded rectangular strip.

[0027] Optionally, a T-slot is provided on the side of the inner limiting strip away from the inner side plate. The length and extension direction of the T-slot are the same as the length and extension direction of the inner limiting strip. The cross-sectional shape of the T-slot perpendicular to its length direction is a first T-shape, and the opening of the T-slot faces away from the inner side plate.

[0028] A shock-absorbing strip is elastically engaged within the T-slot; the length of the shock-absorbing strip is equal to the length of the T-slot; the shock-absorbing strip includes a T-shaped engaging portion and an arc-shaped anti-collision portion; perpendicular to the length direction of the shock-absorbing strip, the shape of the T-shaped engaging portion is a second T-shaped shape that fits the first T-shape, and the arc-shaped anti-collision portion is fan-shaped; one side of the arc-shaped anti-collision portion corresponding to the straight edge of the fan-shaped portion contacts the side of the inner limiting strip away from the inner side plate, and is integrally connected to the T-shaped engaging portion.

[0029] Optionally, a rectangular handle frame is integrally provided on the side of the upper frame away from its adhesive plate; the orthographic projection of the handle frame is rectangular along the thickness direction of the ventilation plate; the orthographic projection of the handle frame coincides with the orthographic projection of the outer limiting strip and the inner side plate of the upper frame along the height direction of the ventilation plate.

[0030] The wide side of the handle frame near the outer panel is an arc surface that is concave away from the outer panel.

[0031] Compared with the prior art, the self-circulating air door panel provided by the present invention achieves at least the following beneficial effects:

[0032] This invention solves the problems of existing technologies where door panels lack air circulation and purification designs, leading to easy accumulation of pollutants inside the cabinet; and where they cannot be adapted to narrow cabinet door structures. Specifically, its effects are as follows:

[0033] First, the self-circulating air door panel provided by this invention effectively overcomes the shortcomings of traditional cabinet doors in the prior art, which cannot solve the problem of air circulation and purification within the cabinet. When the fan starts, outside air enters the filter, and the purified air flows into the sterilizer. The sterilizer's lamp kills bacteria or viruses and other microorganisms in the air. Subsequently, the air enters the cabinet through the ventilation holes of the air exchange plate after being pressurized by the fan, achieving a continuous input of purified air into the cabinet. The air inside the cabinet can flow out naturally through the ventilation holes on the side away from the fan. The fan, sterilizer, and filter work together to form a complete air circulation, which effectively solves the problems of dust accumulation, harmful gas buildup, and humidity imbalance caused by traditional cabinet doors, ensuring clean and dry air inside the cabinet and providing a stable and safe storage environment for precision instruments, hazardous chemicals, food, and other items.

[0034] Secondly, the self-circulating air door panel provided by this invention can improve the overall structural strength and sealing performance. The frame adopts a hollow trapezoidal plate structure, which reduces weight while ensuring structural strength and effectively prevents deformation of the self-circulating air door panel. The corner brackets have an L-shaped block structure, which precisely matches the snap-fit ​​groove, and the bolt fixing method ensures a firm connection of the frame and greatly extends the service life. Furthermore, the corner brackets and frame are detachable, which facilitates the maintenance and replacement of the circulation components. The sterilizer, fan, ventilation plate, filter, ventilation plate, and decorative panel are glued together, and can be replaced individually if damaged.

[0035] Of course, any product implementing this invention does not necessarily need to achieve all of the technical effects described above at the same time.

[0036] Other features and advantages of the invention will become clear from the following detailed description of exemplary embodiments of the invention with reference to the accompanying drawings. Attached Figure Description

[0037] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments of the invention and, together with their description, serve to explain the principles of the invention.

[0038] Figure 1 This is a structural schematic diagram of the concealed nail hole aluminum frame glass self-circulating air door panel provided by prior art 1;

[0039] Figure 2 This is a structural schematic diagram of a self-circulating air door panel provided by the present invention;

[0040] Figure 3 This is an exploded structural diagram of a self-circulating air door panel provided by the present invention;

[0041] Figure 4 This is a top view of the decorative panel, ventilation panel, lower frame and circulation assembly provided by the present invention;

[0042] Figure 5 yes Figure 3 Enlarged view of point A in the middle;

[0043] Figure 6 This is a cross-sectional view of the upper frame provided by the present invention;

[0044] Figure 7 This is a schematic diagram of the structure of the upper left corner code, upper right corner code, lower left corner code, or lower right corner code provided by the present invention;

[0045] Figure 8 This is a partial connection diagram of the upper left corner code and the left frame provided by the present invention;

[0046] Figure 9 This is a partial structural diagram of the lower frame, filter module, and dustproof and breathable plug provided by the present invention;

[0047] Figure 10 This is a partial structural diagram of the ventilation plate, fan, disinfection module, lower frame and dustproof and breathable plug provided by the present invention;

[0048] Figure 11 yes Figure 4 Enlarged view of point B in the middle. Detailed Implementation

[0049] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that, unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the invention.

[0050] The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the invention or its application or use.

[0051] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and equipment should be considered part of the specification.

[0052] In all the examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values.

[0053] It should be noted that similar labels and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be discussed further in subsequent figures.

[0054] Example 1

[0055] Reference Figures 2 to 11 As shown, Figure 2 This is a structural schematic diagram of a self-circulating air door panel provided by the present invention; Figure 3 This is an exploded structural diagram of a self-circulating air door panel provided by the present invention; Figure 4 This is a top view of the decorative panel, ventilation panel, lower frame and circulation assembly provided by the present invention; Figure 5 yes Figure 3 Enlarged view of point A in the middle; Figure 6 This is a cross-sectional view of the upper frame provided by the present invention; Figure 7 This is a schematic diagram of the structure of the upper left corner code, upper right corner code, lower left corner code, or lower right corner code provided by the present invention; Figure 8 This is a partial connection diagram of the upper left corner code and the left frame provided by the present invention; Figure 9 This is a partial structural diagram of the lower frame, filter module, and dustproof and breathable plug provided by the present invention; Figure 10 This is a partial structural diagram of the ventilation plate, fan, disinfection module, lower frame and dustproof and breathable plug provided by the present invention; Figure 11 yes Figure 4 Enlarged view of point B in the middle.

[0056] This embodiment provides a self-circulating air door panel, including: a rectangular ventilation panel 1, a rectangular decorative panel 2, a hollow rectangular ring frame assembly 3, and a circulation assembly 4; the ventilation panel 1 is arranged parallel to the decorative panel 2, and the ventilation panel 1 is located on the side closer to the inside of the cabinet; the ventilation panel 1 has at least 10 circular ventilation holes 11 along its thickness direction; along the thickness direction X of the ventilation panel 1, the orthographic projection of the ventilation panel 1 is located within the orthographic projection of the decorative panel 2;

[0057] The frame assembly 3 includes a frame piece 3W and a corner bracket 3N; the frame piece 3W includes an upper frame piece 31 and a lower frame piece 33 that are parallel to each other, as well as a left frame piece 34 and a right frame piece 32 that are parallel to each other. The upper frame piece 31, the left frame piece 34, the lower frame piece 33 and the right frame piece 32 are connected end to end to form a hollow rectangular ring; the vertical line of the hollow rectangular ring coincides with the vertical line of the ventilation panel 1 or the decorative panel 2.

[0058] Ventilation panel 1 is glued to the edge of the hollow rectangular ring near the cabinet. The four sides of ventilation panel 1 along its periphery are respectively connected to the sides of the upper frame 31, left frame 34, lower frame 33, and right frame 32 away from the decorative panel 2. Decorative panel 2 is glued to the edge of the hollow rectangular ring away from the cabinet. The four sides of decorative panel 2 along its periphery are respectively connected to the sides of the upper frame 31, left frame 34, lower frame 33, and right frame 32 away from the ventilation panel 1. There is a gap between decorative panel 2 and ventilation panel 1. The frame 3W, decorative panel 2, and ventilation panel 1 form a cubic accommodating space.

[0059] The upper frame 31, left frame 34, lower frame 33, and right frame 32 are all hollow trapezoidal plates; the projection of the hollow trapezoidal plate along the thickness direction X of the ventilation plate 1 is an isosceles trapezoid, and the orthographic projection along the direction Y from the left frame 34 to the right frame 32 is a rectangle; the hollow trapezoidal plate includes mutually parallel inner side plates 301 and outer side plates 302, as well as mutually parallel grooved plates 303 and adhesive plates 304; along the thickness direction X of the ventilation plate 1, the orthographic projections of the inner side plate 301 and the outer side plate 302 are mutually overlapping isosceles trapezoids; the inner side plate 301... 01 The side of the outer panel 302 near the decorative panel 2 and the side of the outer panel 302 near the decorative panel 2 are integrally connected to the opposite sides of the adhesive board 304; the length of the adhesive board 304 is the same as the maximum length of the outer panel 302 or the inner panel 301; the grooved plate 303 is integrally disposed between the inner panel 301 and the outer panel 302, and the grooved plate 303, part of the inner panel 301 and part of the outer panel 302 form a first C-shaped hand groove 305, and the groove opening of the first C-shaped hand groove 305 faces the direction away from the adhesive board 304;

[0060] An outer limiting strip 307 extending along its length is integrally provided on the side of the outer side plate 302 away from the adhesive plate 304 and away from the inner side plate 301; the outer limiting strip 307 is in the shape of an isosceles trapezoid; an inner limiting strip 306 extending along its length is glued to the side of the inner side plate 301 away from the adhesive plate 304 and away from the outer side plate 302; the inner limiting strip 306 is in the shape of an isosceles trapezoid, and the maximum length of both the inner limiting strip 306 and the outer limiting strip 307 is the same as the maximum length of either the outer side plate 302 or the inner side plate 301;

[0061] An integral snap-fit ​​groove 308 is provided between the outer side plate 302 and the inner side plate 301, and the snap-fit ​​groove 308 is located between the grooved plate 303 and the adhesive plate 304; along the length direction of the hollow trapezoidal plate, the snap-fit ​​groove 308 is the same length as the hollow trapezoidal plate; the snap-fit ​​groove 308 has a rectangular ventilation gap 3082 along the width direction of the hollow trapezoidal plate; the snap-fit ​​groove 308 between the outer side plate 302 and the inner side plate 301 of the upper frame member 31 is the upper frame snap-fit ​​groove, the snap-fit ​​groove 308 between the outer side plate 302 and the inner side plate 301 of the left frame member 34 is the left frame snap-fit ​​groove, the snap-fit ​​groove 308 between the outer side plate 302 and the inner side plate 301 of the right frame member 32 is the right frame snap-fit ​​groove, and the snap-fit ​​groove 308 between the outer side plate 302 and the inner side plate 301 of the lower frame member 33 is the lower frame snap-fit ​​groove;

[0062] Corner code 3N includes upper left corner code 35, upper right corner code 36, lower left corner code 38, and lower right corner code 37. The upper left corner code 35, upper right corner code 36, lower left corner code 38, and lower right corner code 37 have the same structure, all being L-shaped blocks. The two ends of the upper left corner code 35 along its length are respectively inserted into one end of the upper frame component's locking groove and one end of the left frame component's locking groove. The two ends of the lower left corner code 38 along its length are respectively inserted into the other end of the left frame component's locking groove and one end of the lower frame component's locking groove. The two ends of the lower right corner code 37 along its length are respectively inserted into the other end of the lower frame component's locking groove and one end of the right frame component's locking groove. The two ends of the upper right corner code 36 along its length are respectively inserted into the other end of the right frame component's locking groove and the other end of the upper frame component's locking groove.

[0063] The adhesive plate 304 of the lower frame 33 has a rectangular ventilation hole 332; along the height direction Z of the ventilation plate 1, the orthographic projection of the ventilation hole 332 is located between the orthographic projection of the decorative panel 2 and the orthographic projection of the ventilation plate 1; the upper pull groove plate 303 of the lower frame 33 has a round-headed rectangular hole, and a dustproof and breathable plug 331 is elastically engaged in the round-headed rectangular hole.

[0064] The circulation component 4 includes a fan 42, a disinfection device 43, a filter 41, and a controller; the fan 42, the disinfection device 43, and the filter 41 are all electrically connected to the controller; the lower frame 33 has a circular power connection hole in its pull groove 305, through which the fan 42, the disinfection device 43, and the filter 41 are connected to an external power source.

[0065] The fan 42 is located within the cubical containment space, with one wide side of it glued to the side of the ventilation plate 1 near the decorative panel 2; the side of the fan 42 near the lower frame is glued to and connected to the disinfection device 43; the side of the disinfection device 43 away from the fan 42 is glued to the side of the adhesive plate 304 of the lower frame 33 away from its grooved plate 303; along the height direction Z of the ventilation plate 1, the orthographic projection of the ventilation hole 332 is located within the orthographic projection of the disinfection device 43; the filter 41 is glued to the middle of the snap-fit ​​groove of the lower frame; along the height direction Z of the ventilation plate 1, the orthographic projection of the round-headed rectangular hole is located within the orthographic projection of the filter 41.

[0066] Specifically, continue to refer to Figure 3 and Figure 4 As shown, this embodiment provides a ventilation panel 1 located near the interior of the cabinet. The cabinet is existing technology and will not be described in detail here. The ventilation panel 1, decorative panel 2, and frame assembly 3 can be specifically limited according to the size of the cabinet; the dimensional descriptions in this embodiment are merely illustrative. The ventilation panel 1 can be made of sheet metal or tempered glass, and its length and width are set according to the opening size of the cabinet. The ventilation panel 1 has at least 10 ventilation holes 11 along its thickness direction. The ventilation holes 11 can be circular or elliptical. The diameter of the ventilation holes 11 can range from 3mm to 5mm, and they are evenly distributed on the surface of the ventilation panel 1. The center-to-center distance between two adjacent ventilation holes 11 ranges from 20mm to 25mm. The decorative panel 2 is located away from the cabinet and parallel to the ventilation panel 1. The decorative panel 2 can be made of aluminum alloy or wood; along the thickness direction X of the ventilation panel 1, the orthographic projection of the ventilation panel 1 lies within the orthographic projection of the decorative panel 2. Along the height direction Z of the ventilation panel 1, the length of the decorative panel 2 is 10mm to 15mm longer than the length of the ventilation panel 1; along the direction Y from the left frame member 34 to the right frame member 32, the width of the decorative panel 2 is 10mm to 15mm wider than the width of the ventilation panel 1, so that the decorative panel 2 completely covers the ventilation panel 1 and the outer edge of the frame assembly 3, thereby improving the overall sealing performance and overall appearance of the self-circulating air door panel provided in this embodiment.

[0067] Continue to refer to Figure 3 and Figure 4As shown, the frame assembly 3 includes a frame member 3W and corner brackets 3N for connecting the frame member 3W; the frame member 3W and corner brackets 3N can be made of aluminum alloy. The frame member 3W includes an upper frame member 31 and a lower frame member 33 that are parallel to each other, as well as a left frame member 34 and a right frame member 32 that are parallel to each other. The upper frame member 31 and the lower frame member 33 are the same size and are arranged opposite each other; the left frame member 34 and the right frame member 32 are the same size and are arranged opposite each other. The only difference between the upper frame member 31 or the lower frame member 33 and the left frame member 34 or the right frame member 32 is their length, which is specifically set according to the size of the cabinet. The upper frame member 31, the left frame member 34, the lower frame member 33, and the right frame member 32 are connected end to end to form a hollow rectangular ring. The vertical line of the hollow rectangular ring coincides with the vertical line of the ventilation plate 1 or the decorative panel 2; this ensures that the self-circulating air door panel structure is subjected to uniform stress and avoids deformation during use. The thickness direction of the hollow rectangular ring is X, which is the thickness direction of the ventilation plate 1. The ventilation plate 1 is glued to the edge of the hollow rectangular ring near the cabinet. The four sides of its wide side away from the decorative panel 2 are respectively connected to the sides of the upper frame 31, left frame 34, lower frame 33, and right frame 32 away from the decorative panel 2. That is, the wide side of the ventilation plate 1 near the cabinet is on the same vertical plane as the sides of the upper frame 31, left frame 34, lower frame 33, and right frame 32 near the cabinet. The decorative panel 2 is glued to the edge of the hollow rectangular ring away from the cabinet. The four sides of its wide side away from the ventilation plate 1 are respectively connected to the sides of the upper frame 31, left frame 34, lower frame 33, and right frame 32 away from the ventilation plate 1. That is, the wide side of the decorative panel 2 away from the cabinet is on the same vertical plane as the sides of the upper frame 31, left frame 34, lower frame 33, and right frame 32 away from the cabinet. There is a gap between the decorative panel 2 and the ventilation panel 1. The frame 3W, decorative panel 2, and ventilation panel 1 form a cubic receiving space; the cubic receiving space is used to accommodate the circulation component 4. The width of the cubic receiving space along the thickness direction X of the ventilation panel 1 is at least 10mm, so as to provide sufficient space for the installation of the circulation component 4 and air circulation. The cubic receiving space can be connected to the space inside the cabinet through the vent holes 11 in the ventilation panel 1, and the air inside the cabinet can naturally convect into the cubic receiving space through the vent holes 11.

[0068] Continue to refer to Figures 3 to 6As shown, along the height direction Z of the ventilation panel 1, the orthographic projections of the upper frame 31 and the lower frame 33 coincide, and the orthographic projections of the left frame 34 and the right frame 32 are located within the orthographic projections of either the upper frame 31 or the lower frame 33. Along the direction Y from the left frame 34 to the right frame 32, the orthographic projections of the left frame 34 and the right frame 32 coincide, and the orthographic projections of the upper frame 31 and the lower frame 33 are located within the orthographic projections of either the left frame 34 or the right frame 32. The upper frame 31, left frame 34, lower frame 33, and right frame 32 are the supporting structures for the decorative panel 2 and the ventilation panel 1, and all are hollow trapezoidal panels. The projection of the hollow trapezoidal panel along the thickness direction X of the ventilation panel 1 is an isosceles trapezoid, and the orthographic projection along the direction Y from the left frame 34 to the right frame 32 is a rectangle. The hollow trapezoidal panel includes parallel inner side panels 301 and outer side panels 302, as well as parallel grooved panels 303 and adhesive panels 304. Both inner side panels 301 and outer side panels 302 are isosceles trapezoids. Along the thickness direction X of the ventilation panel 1, the orthographic projections of the inner side panel 301 and outer side panel 302 are identical isosceles trapezoids. The length of the inner side panel 301 and outer side panel 302 on the side closest to the decorative panel 2 is less than the length on the side furthest from the decorative panel 2. The sides of the adhesive panel 304 are integrally connected to the opposite sides of the inner side panel 301 and the outer side panel 302 on the side closest to the decorative panel 2. The length of the adhesive panel 304 is the same as the maximum length of either the outer side panel 302 or the inner side panel 301. The sides of the adhesive panel 304, inner side panel 301, and outer side panel 302 closest to the decorative panel 2 are all in the same vertical plane. A grooved plate 303 is integrally disposed between the inner side plate 301 and the outer side plate 302; along the height direction Z of the ventilation plate 1, the orthographic projection of the grooved plate 303 and the orthographic projection of the adhesive plate 304 do not overlap. The grooved plate 303, the inner side plate 301, and the outer side plate 302 constitute a first C-shaped hand groove 305, the opening of the first C-shaped hand groove 305 facing away from the adhesive plate 304; the width of the hand groove 305 is at least 15mm, which is used to facilitate the insertion of the user's fingers, so as to facilitate the opening of the self-circulating air door panel provided in this embodiment by pulling the frame member 3W.

[0069] An outer limiting strip 307 extending along its length is integrally provided on the side of the outer side panel 302 away from the adhesive plate 304 and the side away from the inner side panel 301. The outer limiting strip 307 is made of the same material as the outer side panel 302, and its side away from the decorative panel 2 is on the same vertical plane as the side of the outer side panel 302 away from the decorative panel 2. The outer limiting strip 307 is an isosceles trapezoid. Along the thickness direction X of the ventilation plate 1, the orthographic projection of the outer limiting strip 307 coincides with the orthographic projection of the outer side panel 302. The outer limiting strip 307 is used to limit and position the decorative panel 2 from the periphery direction when the decorative panel 2 is glued to the frame 3W. An inner limiting strip 306 extending along its length is glued to the side of the inner side panel 301 away from the adhesive plate 304 and the side away from the outer side panel 302. The inner limiting strip 306 is made of the same material as the inner side panel 301, and its side away from the decorative panel 2 is on the same vertical plane as the side of the inner side panel 301 away from the decorative panel 2. The inner limiting strip 306 is an isosceles trapezoid, and its orthographic projection along the thickness direction X of the ventilation plate 1 coincides with the orthographic projection of the inner side panel 301. The inner limiting strip 306 is used to limit and position the ventilation plate 1 from the periphery when the ventilation plate 1 is glued to the frame 3W. The maximum length of both the inner limiting strip 306 and the outer limiting strip 307 is the same as the maximum length of the outer side panel 302 or the inner side panel 301.

[0070] An integral snap-fit ​​groove 308 is provided between the outer side plate 302 and the inner side plate 301 for snapping in the corner bracket 3N or the circulation assembly 4. The snap-fit ​​groove 308 is made of the same material as the outer side plate 302 or the inner side plate 301. The snap-fit ​​groove 308 is located between the grooved plate 303 and the adhesive plate 304; along the length of the hollow trapezoidal plate, the orthographic projections of the snap-fit ​​groove 308, the grooved plate 303, and the adhesive plate 304 do not coincide, and the orthographic projection of the snap-fit ​​groove 308 is tangent to the orthographic projection of the outer side plate 302 or the inner side plate 301. The snap-fit ​​groove 308 is the same length as the hollow trapezoidal plate along its length; the snap-fit ​​groove 308 has a rectangular ventilation gap 3082 along the width of the hollow trapezoidal plate. The ventilation gap 3082 provides a channel for air circulation and also provides space for the insertion of the corner bracket 3N.

[0071] The snap-fit ​​groove 308 between the outer side plate 302 and the inner side plate 301 of the upper frame 31 is the upper frame snap-fit ​​groove, and the snap-fit ​​groove 308 between the outer side plate 302 and the inner side plate 301 of the lower frame 33 is the lower frame snap-fit ​​groove; along the Y direction from the left frame 34 to the right frame 32, the length of the upper frame snap-fit ​​groove is the same as the length of the lower frame snap-fit ​​groove. The snap-fit ​​groove 308 between the outer side plate 302 and the inner side plate 301 of the left frame 34 is the left frame snap-fit ​​groove, and the snap-fit ​​groove 308 between the outer side plate 302 and the inner side plate 301 of the right frame 32 is the right frame snap-fit ​​groove; along the height Z direction of the ventilation plate 1, the length of the left frame snap-fit ​​groove is the same as the length of the right frame snap-fit ​​groove. The upper frame part slot, the left frame part slot, the lower frame part slot and the right frame part slot are used to fix the corner bracket 3N, and a part of the circulation component 4 is also fixed in the lower frame part slot.

[0072] Continue to refer to Figures 3 to 8As shown, corner bracket 3N includes upper left corner bracket 35, upper right corner bracket 36, lower left corner bracket 38, and lower right corner bracket 37. The upper left corner bracket 35, upper right corner bracket 36, lower left corner bracket 38, and lower right corner bracket 37 have the same structure, all being L-shaped blocks. The position of the L-shaped block perpendicular to its length direction is its inner right angle position. The two ends of the upper left corner bracket 35, upper right corner bracket 36, lower left corner bracket 38, and lower right corner bracket 37 along their length extension direction are all the same length. The two ends of the upper left corner bracket 35 along its length direction are respectively inserted into one end of the upper frame member's locking groove and one end of the left frame member's locking groove; that is, the two ends of the upper left corner bracket 35 are respectively inserted into the end of the upper frame member 31 near the left frame member 34, and the end of the left frame member 34 near the upper frame member 31. The upper left corner bracket 35, the upper frame member 31, and the left frame member 34 are simultaneously fixed by bolts. The lower left corner bracket 38 is inserted into the other end of the left frame member's locking groove and the other end of the lower frame member's locking groove at both ends along its length. That is, the two ends of the lower left corner bracket 38 are inserted into the end of the lower frame member 33 near the left frame member 34 and the end of the left frame member 34 away from the upper frame member 31, respectively. The lower left corner bracket 38, the left frame member 34, and the lower frame member 33 are simultaneously fixed by bolts. The lower right corner bracket 37 is inserted into the other end of the lower frame member's locking groove and the other end of the right frame member's locking groove at both ends along its length. That is, the two ends of the lower right corner bracket 37 are inserted into the end of the lower frame member 33 away from the left frame member 34 and the end of the right frame member 32 away from the upper frame member 31, respectively. The lower right corner bracket 37, the lower frame member 33, and the right frame member 32 are simultaneously fixed by bolts. The two ends of the upper right corner bracket 36 along its length are respectively inserted into the other end of the right frame member's locking groove and the other end of the upper frame member's locking groove. That is, the two ends of the upper right corner bracket 36 are respectively inserted into the end of the upper frame member 31 away from the left frame member 34 and the end of the right frame member 32 near the upper frame member 31. The upper right corner bracket 36, the right frame member 32, and the upper frame member 31 are fixed by bolts. M4×10mm stainless steel bolts can be used, and the threaded connection is firm and reliable, which can effectively prevent the frame assembly 3 from loosening during long-term use.

[0073] Continue to refer to Figures 3 to 9As shown, the adhesive plate 304 of the lower frame 33 has a rectangular ventilation hole 332, the length of which is at least 100mm along the Y direction from the left frame 34 to the right frame 32. Along the height Z direction of the ventilation plate 1, the orthographic projection of the ventilation hole 332 is rectangular and located between the orthographic projection of the decorative panel 2 and the orthographic projection of the ventilation plate 1; the ventilation hole 332 allows the cubic receiving space between the decorative panel 2 and the ventilation plate 1 to communicate with the interior of the lower frame 33. This ensures that air can circulate between the cubic receiving space and the lower frame 33 through the ventilation hole 332, and because the cubic receiving space is connected and communicated with the vent 11, the air inside the lower frame 33 can exchange with the air inside the cabinet. The grooved plate 303 of the lower frame 33 has a rounded rectangular hole. The rounded rectangular hole is a rectangular hole with rounded ends along the Y direction from the left frame 34 to the right frame 32. A dustproof and breathable plug 331 is elastically engaged inside the rounded rectangular hole. The dustproof and ventilated plug 331 prevents external dust from entering the cubical housing space through the rounded rectangular hole, while not affecting airflow within the hole. External air enters the lower frame 33 through the rounded rectangular hole, then flows into the cubical housing space between the decorative panel 2 and the ventilation plate 1 through its ventilation hole 332, and finally enters the cabinet interior through the ventilation hole 11 of the ventilation plate 1. Under natural conditions, air can achieve natural convection between the lower frame 33, the cubical housing space, and the cabinet interior.

[0074] Continue to refer to Figures 3 to 10 As shown, the circulation component 4 includes a fan 42, a sterilizer 43, a filter 41, and a controller. The fan 42, sterilizer 43, and filter 41 are electrically connected to the controller to achieve forced convection of air within the lower frame 33, the cubical accommodating space, and the cabinet. A circular power connection hole is provided in the handle groove 305 of the lower frame 33. The diameter of the power connection hole can range from 8mm to 10mm. The fan 42, sterilizer 43, and filter 41 are connected to an external power source through the power connection hole. The external power supply wires can be arranged along the handle groove of the lower frame 33.

[0075] The fan 42 can be a Delta (DELTA) NC55C01-17E01. The fan 42 fits into the cubic space between the decorative panel 2 and the ventilation panel 1, with one wide side bonded to the side of the ventilation panel 1 closest to the decorative panel 2 using high-temperature resistant silicone adhesive. The side of the fan 42 near the lower frame is bonded to and connected to the disinfection unit 43; furthermore, the interface between the fan 42 and the disinfection unit 43 is sealed with sealant to prevent airflow leakage. When the door is closed, after the fan 42 is activated, air inside the cabinet enters the cubic space through the vent 11 of the ventilation panel 1, is pressurized by the fan 42 to form a directional airflow, and flows into the disinfection unit 43. The disinfection unit 43 can be a Trump XPY74, which is compatible with the cubic space between the decorative panel 2 and the ventilation panel 1. The side of the sterilizer 43 away from the fan 42 is glued to the side of the adhesive plate 304 of the lower frame 33 away from its grooved plate 303. Along the height direction Z of the ventilation plate 1, the orthogonal projection of the ventilation hole 332 is located within the orthogonal projection of the sterilizer 43, ensuring that the negative ions generated by the sterilizer 43 can be evenly diffused into the cabinet interior with the purified airflow to kill bacteria or viruses in the air. The controller model can be MC-12V-4CH, and it is glued to the inside of the lower frame 33. The controller is used to control the speed of the fan 42 and the start / stop of the sterilizer 43. The controller is located near the power connection hole, and its wires and the power connection hole are led out to connect to an external power source.

[0076] The filter 41 can be of model HF-100×50×12, and it is glued to the middle of the snap-fit ​​groove 308 on the lower frame 33. Along the height direction Z of the ventilation plate 1, the orthographic projection of the round-headed rectangular hole is located within the orthographic projection of the filter 41, forming an airflow channel for the dustproof and breathable plug 331, the filter 41, the sterilizer 43, and the ventilation hole 332.

[0077] In the specific implementation process, continue to refer to Figures 3 to 10 As shown, this embodiment can be used in any place where air exchange between the inside and outside of the cabinet is required, such as laboratory cabinets and cabinets for storing food that needs to be ventilated. The specific installation steps are as follows:

[0078] Step 1, frame assembly 3: Insert the two ends of the upper left corner bracket 35 into one end of the snap-fit ​​groove 308 of the upper frame 31 and the other end of the snap-fit ​​groove 308 of the left frame 34, respectively, align the corner bracket hole 314 with the corner bracket fixing hole 310, and screw in the bolts to fix them; similarly, install the upper right corner bracket 36, lower left corner bracket 38, and lower right corner bracket 37 in sequence, and connect the upper frame 31, left frame 34, lower frame 33, and right frame 32 to form a hollow rectangular ring, ensuring that the diagonal length error of the frame assembly 3 does not exceed 2mm.

[0079] The second step involves gluing the inner limiting strip 306 to the inner side panel 301 on the side away from the outer side panel 302, and gluing the outer limiting strip 307 to the outer side panel 302 on the side away from the inner side panel 301. During gluing, ensure that the lengths of the inner and outer limiting strips 306 and 307 are consistent with the length of the frame 3W and flush with its edge. Next, glu the ventilation panel 1 to the edge of the frame assembly 3 near the cabinet using neutral silicone adhesive, ensuring the adhesive layer is uniform and continuous, without bubbles or gaps. After the ventilation panel 1 is firmly glued, glu the decorative panel 2 to the edge of the frame assembly 3 away from the cabinet using neutral silicone adhesive, ensuring that the decorative panel 2 is parallel to the ventilation panel 1 and that the cube's accommodating space has a uniform width.

[0080] Third step, install the circulation component 4: Attach the fan 42 to the side of the ventilation plate 1 near the decorative panel 2 using high-temperature resistant silicone adhesive, ensuring that the air outlet of the fan 42 faces the disinfection device 43; attach the disinfection device 43 to one side of the adhesive plate 304 of the lower frame 33; attach the filter 41 to the middle of the snap-fit ​​groove 308 of the lower frame 33, ensuring that the filter 41 is aligned with the round-headed rectangular hole; finally, lead out the power cords of the fan 42, disinfection device 43, and filter 41 through the power connection hole and connect them to an external power source.

[0081] Optionally, a touch switch can be installed on the power cord; the touch switch is installed in the pull groove 305 of the lower frame 33 for easy user operation. The touch switch can be selectively installed according to user needs, and its model can be TC-6×6.

[0082] The fourth step is to elastically snap the dustproof and breathable plug 331 into the rounded rectangular hole of the lower frame 33, ensuring that the dustproof and breathable plug 331 fits tightly into the rounded rectangular hole without any looseness.

[0083] Compared with the prior art, the self-circulating air door panel provided in this embodiment achieves at least the following beneficial effects:

[0084] This embodiment solves the problems in existing technologies where the door panel lacks air circulation and purification design, leading to easy accumulation of pollutants inside the cabinet; and it cannot be adapted to narrow cabinet door structures. Specifically, its effects are as follows:

[0085] First, the self-circulating air door panel provided in this embodiment effectively overcomes the shortcomings of traditional cabinet doors in the prior art, which cannot solve the problem of air circulation and purification within the cabinet. When the fan 42 is activated, external air enters the filter 41. The purified air flows into the sterilizer 43, where its sterilizing lamp kills bacteria or viruses and other microorganisms in the air. Subsequently, the air enters the cabinet through the ventilation holes 11 of the air exchange plate 1 after being pressurized by the fan 42, achieving continuous purified air input within the cabinet. The air inside the cabinet can flow out naturally through the ventilation holes 11 on the side away from the fan 42. The fan 42, sterilizer 43, and filter 41 work together to form a complete air circulation system, which effectively solves the problems of dust accumulation, harmful gas buildup, and humidity imbalance caused by traditional cabinet doors, ensuring clean and dry air inside the cabinet and providing a stable and safe storage environment for precision instruments, hazardous chemicals, food, and other items.

[0086] Secondly, the self-circulating air door panel provided in this embodiment can improve the overall structural strength and sealing performance. The frame 3W adopts a hollow trapezoidal plate structure, which reduces weight while ensuring structural strength and effectively prevents deformation of the self-circulating air door panel. The corner bracket 3N has an L-shaped block structure, which is precisely matched with the snap-fit ​​groove 308. The bolt fixing method ensures that the frame connection is firm and greatly improves the service life. In addition, the corner bracket 3N and the frame 3W are detachable, which facilitates the maintenance and replacement of the circulation component 4. The sterilizer 43, fan 42, ventilation plate 1, filter 41, ventilation plate 1 and decorative panel 2 are glued together, and can be replaced individually if damaged.

[0087] In one alternative embodiment, continue to refer to Figures 3 to 11 As shown, the decorative panel 2 is integrally provided with a trapezoidal progressive portion 21 near the ventilation panel 1. The area of ​​the trapezoidal progressive portion 21 on the side near the decorative panel 2 is larger than the area on the side away from the decorative panel 2. The perpendicular bisector of the trapezoidal progressive portion 21 coincides with the perpendicular bisector of the decorative panel 2. The height direction of the decorative panel 2 is the height direction Z of the ventilation panel 1. The orthographic projection shape of the trapezoidal progressive portion 21 is an isosceles trapezoid and is tangent to the orthographic projection of the decorative panel 2.

[0088] The connection between the adhesive plate 304 and the outer side plate 302 is a first chamfer 311. The first chamfer 311 of the upper frame 31, the first chamfer 311 of the left frame 34, the first chamfer 311 of the lower frame 33 and the first chamfer 311 of the right frame 32 respectively contact the inclined surface of the trapezoidal progressive portion 21.

[0089] Specifically, the decorative panel 2 is integrally provided with a trapezoidal progressive section 21 near the ventilation panel 1. The trapezoidal progressive section 21 is made of the same material as the decorative panel 2, and it is used to ensure the structural integrity and connection strength of the decorative panel 2. The area of ​​the trapezoidal progressive section 21 on the side near the decorative panel 2 is larger than the area on the side away from the decorative panel 2, forming a smoothly transitioning sloping structure to avoid local stress concentration. The perpendicular bisector of the trapezoidal progressive section 21 coincides with the perpendicular bisector of the decorative panel 2, ensuring uniform force distribution along the Y direction from the left frame member 34 to the right frame member 32, preventing displacement or deformation during long-term use. Along the thickness direction X of the ventilation panel 1, the orthographic projection of the trapezoidal progressive section 21 is similar to that of the decorative panel 2 in the mathematical definition of orthographic projection; along the height direction Z of the decorative panel 2 and the height direction Z of the ventilation panel 1, the orthographic projection shape of the trapezoidal progressive section 21 is an isosceles trapezoid, and it is tangent to the orthographic projection of the decorative panel 2.

[0090] The connection between the adhesive board 304 and the outer side plate 302 is a first chamfer 311, and the angle of the first chamfer 311 is 45 degrees. The first chamfer 311 of the upper frame 31, the first chamfer 311 of the left frame 34, the first chamfer 311 of the lower frame 33, and the first chamfer 311 of the right frame 32 respectively contact the four inclined surfaces of the trapezoidal progressive portion 21.

[0091] Through the above solution, the trapezoidal progressive portion 21 fills the gap between the decorative panel 2 and the frame assembly 3. Combined with the tight contact of the first chamfer 311, it greatly improves the sealing performance of the self-circulating air door panel of this embodiment, reduces air leakage in the cubic accommodating space, and improves the air circulation efficiency of the circulation assembly 4. The inclined surface of the trapezoidal progressive portion 21 fits with the first chamfer 311, which also effectively prevents the decorative panel 2 from loosening or vibrating when opening and closing the self-circulating air door panel.

[0092] In one alternative embodiment, continue to refer to Figures 3 to 10 As shown, both the inner side plate 301 away from the outer side plate 302 and the outer side plate 302 away from the inner side plate 301 are provided with anti-slip grooves 309 along their length direction. The anti-slip grooves 309 are straight grooves extending along the length of the inner side plate 301 or the outer side plate 302. At least 10 anti-slip grooves 309 are provided along the width direction of the inner side plate 301 or the outer side plate 302.

[0093] Specifically, the anti-slip texture 309 can be a straight groove extending along the length of the inner side plate 301 or the outer side plate 302, or it can be an S-shaped or wavy pattern. At least 10 anti-slip textures 309 are provided along the width direction of the inner side plate 301 or the outer side plate 302, completely covering the adhesive area between the inner side plate 301 and the inner limiting strip 306, and between the outer side plate 302 and the outer limiting strip 307.

[0094] Through the above solution, the anti-slip texture 309 increases the contact area between the inner side panel 301 and the ventilation panel 1, and between the outer side panel 302 and the decorative panel 2, allowing the neutral silicone adhesive to fully fill the gaps in the anti-slip texture 309, effectively increasing the bonding stability between the ventilation panel 1 and the decorative panel 2. Furthermore, the tight adhesion between the anti-slip texture 309 and the neutral silicone adhesive reduces air residue on the bonding surface, preventing temperature changes from causing the ventilation panel 1 and the decorative panel 2 to peel off, and further preventing external dust and moisture from entering the cubic storage space or cabinet interior through the gaps in the frame assembly 3.

[0095] In one alternative embodiment, continue to refer to Figures 3 to 6 As shown, the inner limiting strip 306 has an L-shaped groove on the side near the adhesive plate 304 and the side near the inner side plate 301. The L-shaped groove and the inner side plate 301 form a rectangular inner fixing groove with the opening facing the adhesive plate 304.

[0096] The inner fixing grooves of the upper frame 31, the left frame 34, the lower frame 33, and the right frame 32 respectively engage with the four sides of the ventilation plate 1 along its periphery.

[0097] Specifically, the inner limiting strip 306 has an L-shaped groove on the side near the adhesive plate 304 and the side near the inner side plate 301. The L-shaped groove cooperates with the inner side plate 301 to form an inner fixing groove with its opening facing the adhesive plate 304. The inner fixing groove is a rectangular groove, and its length is exactly the same as the length of the corresponding position of the inner limiting strip 306. The inner fixing grooves of the upper frame 31, the left frame 34, the lower frame 33, and the right frame 32 respectively engage with the four sides of the ventilation plate 1 along its periphery. After engagement, the ventilation plate 1 fits tightly against the groove wall of the inner fixing groove without any loosening or shaking. To further improve the engagement stability, the groove wall of the inner fixing groove is also uniformly coated with a layer of anti-slip silicone with a thickness ranging from 0.3mm to 0.5mm. The silicone layer has a Shore hardness ranging from 45 degrees to 55 degrees, which can both enhance the friction between the ventilation plate 1 and the inner fixing groove and provide a cushioning protection.

[0098] The above solution can significantly improve the installation stability of the ventilation plate 1, provide all-round positioning for the ventilation plate 1, and ensure that the ventilation plate 1 and the inner fixing groove are precisely matched, enabling the ventilation plate 1 to be quickly positioned and snapped together without the need for complex auxiliary fasteners, thereby improving assembly efficiency and facilitating subsequent disassembly and maintenance, thus meeting the needs of mass production.

[0099] In one alternative embodiment, continue to refer to Figure 3 , Figure 5 and Figure 7As shown, the cross-sections of the upper left corner code 35, upper right corner code 36, lower left corner code 38, and lower right corner code 37 perpendicular to their length direction are all I-shaped 315, and their orthographic projections along the thickness direction X of the ventilation plate 1 are all first L-shaped 312; the snap-fit ​​groove 308 includes four L-shaped strips 3081; the cross-section of the L-shaped strips 3081 perpendicular to their length direction is a second L-shaped; among them, two L-shaped strips 3081 are glued and fixed on one side along the length extension direction of the outer side plate 302 to the side of the outer side plate 302 near the inner side plate 301, and their inner straight The two L-shaped strips 3081 are glued and fixed to the side of the inner side plate 301 near the outer side plate 302 along the length extension direction of the inner side plate 301, and their inner right angles are facing each other; there is a ventilation gap 3082 between the two L-shaped strips 3081 on the outer side plate 302 and the two L-shaped strips 3081 on the inner side plate 301; along the thickness direction X of the ventilation plate 1, the orthographic projection of the two L-shaped strips 3081 on the outer side plate 302 coincides with the orthographic projection of the two L-shaped strips 3081 on the inner side plate 301;

[0100] Along the thickness direction X of the ventilation plate 1, four circular corner code holes 314 are provided on the upper left corner code 35, upper right corner code 36, lower left corner code 38 and lower right corner code 37. The four circular corner code holes 314 are evenly distributed along the length direction of the first L-shape 312. Four circular corner code fixing holes 310 are provided on the outer side plate 302 at the positions corresponding to the corner code holes 314.

[0101] The two corner bracket fixing holes 310 of the upper frame 31 and the two corner bracket fixing holes 310 of the left frame 34 are bolted to the four corner bracket holes 314 of the upper left corner bracket 35; the two corner bracket fixing holes 310 of the lower frame 33 and the two corner bracket fixing holes 310 of the left frame 34 are bolted to the four corner bracket holes 314 of the lower left corner bracket 38; the two corner bracket fixing holes 310 of the upper frame 31 and the two corner bracket fixing holes 310 of the right frame 32 are bolted to the four corner bracket holes 314 of the upper right corner bracket 36; the two corner bracket fixing holes 310 of the lower frame 33 and the two corner bracket fixing holes 310 of the right frame 32 are bolted to the four corner bracket holes 314 of the lower right corner bracket 37.

[0102] Specifically, the cross-sections of the upper left corner code 35, upper right corner code 36, lower left corner code 38, and lower right corner code 37 perpendicular to their length direction are all I-shaped 315, which fits into the inner wall of the snap-fit ​​groove 308. The orthographic projection of the I-shaped code 315 along the thickness direction X of the ventilation plate 1 is a first L-shaped 312, and the two right-angled sides of the first L-shaped 312 are of the same length. The snap-fit ​​groove 308 includes four L-shaped strips 3081 of the same structural size; the material of the outer side plate 302 or the inner side plate 301 of the L-shaped strips 3081 is the same, and their cross-sections perpendicular to their length direction are second L-shaped. The two right-angled sides of the second L-shaped 308 are of equal length, ensuring structural strength while adapting to the insertion requirements of the upper left corner code 35 and other corner codes 3N. Two L-shaped strips 3081 are glued and fixed to the side of the outer side panel 302 closest to the inner side panel 301 along the length of the outer side panel 302, with their inner right angles facing each other. Two other L-shaped strips 3081 are glued and fixed to the side of the inner side panel 301 closest to the outer side panel 302 along the length of the inner side panel 301, with their inner right angles facing each other. A ventilation gap 3082 is formed between the two L-shaped strips 3081 on the outer side panel 302 and the two L-shaped strips 3081 on the inner side panel 301, extending along the length of the snap-fit ​​groove 308. The width of the ventilation gap 3082 is not less than 12mm, providing a smooth air circulation channel within the cubical space without affecting the connection strength. Along the thickness direction X of the ventilation plate 1, the orthographic projections of the two L-shaped strips 3081 on the outer side plate 302 coincide with the orthographic projections of the two L-shaped strips 3081 on the inner side plate 301; ensuring that the corner bracket 3N can be precisely fitted with the four L-shaped strips at the same time when plugged in, avoiding loosening or offset.

[0103] Along the thickness direction X of the ventilation plate 1, the upper left corner bracket 35, upper right corner bracket 36, lower left corner bracket 38, and lower right corner bracket 37 each have 2n circular corner bracket holes 314. These 2n circular corner bracket holes 314 are evenly distributed along the length of the first L-shaped plate 312 to ensure uniform distribution of bolt fixing points. The outer side plate 302 has 2n circular corner bracket fixing holes 310 corresponding to the corner bracket holes 314. n is a positive integer; in this embodiment, n is 2, meaning 4 corner bracket holes 314. The diameter of each corner bracket hole 314 is no greater than the width of the L-shaped strip 3081 along the height direction Z of the ventilation plate 1 or the width in the direction Y from the left frame member 34 to the right frame member 32.

[0104] During assembly, the n corner bracket fixing holes 310 of the upper frame 31 and the n corner bracket fixing holes 310 of the left frame 34 are bolted together to correspond to the 2n corner bracket holes 314 of the upper left corner bracket 35; the n corner bracket fixing holes 310 of the lower frame 33 and the n corner bracket fixing holes 310 of the left frame 34 are bolted together to correspond to the 2n corner bracket holes 314 of the lower left corner bracket 38; the n corner bracket fixing holes 310 of the upper frame 31 and the n corner bracket fixing holes 310 of the right frame 32 are bolted together to correspond to the 2n corner bracket holes 314 of the upper right corner bracket 36; and the n corner bracket fixing holes 310 of the lower frame 33 and the n corner bracket fixing holes 310 of the right frame 32 are bolted together to correspond to the 2n corner bracket holes 314 of the lower right corner bracket 37. That is, the two corner bracket fixing holes 310 of the upper frame 31 and the two corner bracket fixing holes 310 of the left frame 34 are respectively aligned with the four corner bracket holes 314 of the upper left corner bracket 35. The bolts are inserted into the corner bracket fixing holes 310 and corner bracket holes 314 in sequence and tightened to ensure that the connection is tight and there is no looseness. The same applies between the lower frame 33, the left frame 34 and the lower left corner bracket 38, between the upper frame 31, the right frame 32 and the upper right corner bracket 36, and between the lower frame 33, the right frame 32 and the lower right corner bracket 37.

[0105] Through the above solution, the I-shaped 315 of the corner bracket 3N and the L-shaped strip 3081 are precisely matched, significantly increasing the contact area between the corner bracket 3N and the snap-fit ​​groove 308. This effectively resists the periodic torque generated when the self-circulating air door panel is opened and closed, preventing the frame assembly 3 from loosening or deforming after long-term use. The ventilation gap 3082 reserved between the L-shaped strips 3081 ensures that the airflow generated by the circulation assembly 4 can flow quickly without airflow obstruction, thus improving air purification and circulation efficiency.

[0106] In one alternative embodiment, continue to refer to Figures 3 to 10 As shown, the dustproof and breathable plug 331 includes a round-headed rectangular strip 3311 and a rectangular elastic block 3312; the round-headed rectangular strip 3311 is parallel to and engaged in the round-headed rectangular hole, and is on the same horizontal plane as the round-headed rectangular hole; the round-headed rectangular strip 3311 has at least 3 rectangular ventilation holes along its thickness direction.

[0107] The elastic block 3312 is integrally set on the adhesive plate 304 side of the round-headed rectangular strip 3311 near the lower frame 33; eight elastic blocks 3312 are symmetrically arranged along the periphery of the round-headed rectangular strip 3311; the maximum distance between two symmetrical elastic blocks 3312 is greater than the length of the connecting line of the round-headed rectangular strip 3311 at this point.

[0108] Specifically, the dustproof and breathable plug 331 includes a rounded rectangular strip 3311 and a rectangular elastic block 3312, which are integrally formed. The rounded rectangular strip 3311 precisely matches the rounded rectangular hole of the grooved plate 303 in the lower frame 33 and is engaged parallel to it within the hole. The sides of the rounded rectangular strip 3311 and the rounded rectangular hole away from the upper frame 31 are on the same horizontal plane. The thickness of the two ends of the rounded rectangular strip 3311 along its length is greater than that of the middle, forming a gradient structure that is thinner in the middle and thicker at both ends. This enhances the engagement stability between the two ends and the rounded rectangular hole and reduces the resistance to airflow in the middle. The rounded rectangular strip 3311 has at least three rectangular ventilation holes along its thickness to ensure smooth and uniform airflow.

[0109] The elastic block 3312 is integrally disposed on the adhesive plate 304 side of the round-headed rectangular strip 3311 near the lower frame 33, seamlessly connecting with the round-headed rectangular strip 3311. 2M elastic blocks 3312 are symmetrically arranged along the periphery of the round-headed rectangular strip 3311, where M is a positive integer. In this embodiment, M is 4, meaning there are 8 elastic blocks 3312. The symmetrically distributed elastic blocks 3312 form a balanced clamping and force-receiving structure. The maximum distance between two symmetrical elastic blocks 3312 is greater than the length of the connecting line of the round-headed rectangular strip 3311 at this location. Utilizing the elastic deformation characteristics of the silicone material, the elastic block 3312 generates continuous elastic tension after being inserted into the round-headed rectangular hole, tightly fitting against the round-headed rectangular hole and achieving reliable fixation.

[0110] The above solution achieves a significant synergistic effect between dust prevention and breathability. It effectively blocks external dust and particles from entering the cubical containment space through the rounded rectangular holes. The gradient structure in the middle and the evenly distributed ventilation holes reduce airflow resistance and ensure smooth airflow during the operation of the circulation component 4. The symmetrical distribution and interference fit design of the elastic blocks 3312 also make installation stable and disassembly convenient, enhancing adaptability and durability.

[0111] In one alternative embodiment, continue to refer to Figures 3 to 10 As shown, the cross-sectional shape of the elastic block 3312 perpendicular to the periphery of the round-headed rectangular strip 3311 is a third L-shape. The third L-shape of the elastic block 3312 and the round-headed rectangular strip 3311 form a second C-shaped structure. The orientation of the second C-shaped structure is away from the central axis of the round-headed rectangular strip 3311.

[0112] Specifically, the cross-sectional shape of the elastic block 3312 perpendicular to the periphery of the rounded rectangular bar 3311 is a third L-shape, with the inner right angle of the third L-shape pointing away from the perpendicular bisector of the rounded rectangular bar 3311. The third L-shape of the elastic block 3312 precisely fits the edge contour of the rounded rectangular bar 3311, forming a second U-shaped structure with the rounded rectangular bar 3311. The second U-shaped structure is oriented away from the central axis of the rounded rectangular bar 3311, ensuring full-area surface contact with the inner wall of the rounded rectangular hole of the lower frame 33.

[0113] Through the above solution, the third L-shaped cross-section and the second C-shaped structure work together to improve the locking stability, ensuring that the dustproof and breathable plug 331 is tightly locked into the round-headed rectangular hole. Even with frequent opening and closing of the self-circulating air door panel causing vibration, it can prevent loosening and falling off, ensuring long-term reliability. The second C-shaped structure also reduces the difficulty of disassembly and assembly. Users only need to lightly press the right-angled edge of the elastic block 3312 to detach it from the hole wall without the need for tools. Moreover, the operation will not damage the inner wall of the round-headed rectangular hole or the elastic block 3312, making maintenance convenient and extending the service life of the components.

[0114] In one alternative embodiment, continue to refer to Figures 3 to 10 As shown, a T-shaped groove 313 is provided on the side of the inner limiting strip 306 away from the inner side plate 301. The length and extension direction of the T-shaped groove 313 are the same as the length and extension direction of the inner limiting strip 306. The cross-sectional shape of the T-shaped groove 313 perpendicular to its length direction is a first T-shape, and the groove opening of the T-shaped groove 313 faces away from the inner side plate 301.

[0115] A shock-absorbing strip 6 is elastically engaged within the T-slot 313; the length of the shock-absorbing strip 6 is equal to the length of the T-slot 313; the shock-absorbing strip 6 includes a T-shaped engaging portion and an arc-shaped anti-collision portion; perpendicular to the length direction of the shock-absorbing strip 6, the shape of the T-shaped engaging portion is a second T-shaped shape that fits the first T-shape, and the arc-shaped anti-collision portion is fan-shaped; one side of the arc-shaped anti-collision portion corresponding to the straight edge of the fan-shaped portion contacts the side of the inner limiting strip 306 away from the inner side plate 301, and is integrally connected to the T-shaped engaging portion.

[0116] Specifically, a T-slot 313 is provided on the side of the inner limiting strip 306 away from the inner side plate 301. The length and extension direction of the T-slot 313 are the same as the length and extension direction of the inner limiting strip 306. The T-slot 313 is used to engage the shock-absorbing strip 6. The cross-sectional shape of the T-slot 313 perpendicular to its length direction is a first T-shape, and the opening of the T-slot 313 faces away from the inner side plate 301.

[0117] The shock absorber strip 6 can be made of a blend of natural rubber and nitrile rubber, and its length is equal to the length of the T-slot 313. The shock absorber strip 6 includes an integrated T-shaped snap-fit ​​part and an arc-shaped anti-collision part. Perpendicular to the length direction of the shock absorber strip 6, the T-shaped snap-fit ​​part is a second T-shaped shape that fits the first T-shape, and the arc-shaped anti-collision part is fan-shaped. The T-shaped snap-fit ​​part and the T-slot 313 are interference-fitted to ensure a tight fit after snapping and prevent loosening or falling off. The side of the arc-shaped anti-collision part corresponding to the straight edge of the fan-shaped part contacts the side of the inner limiting strip 306 away from the inner side plate 301.

[0118] The above solution achieves significant shock absorption and noise reduction, effectively absorbing the impact force generated when the self-circulating air door panel is opened and closed, while reducing noise from collisions. The anti-collision part, through surface contact with the inner limit strip 306, avoids direct hard contact between the self-circulating air door panel and the cabinet, preventing scratches and deformation of the edges of the self-circulating air door panel and cabinet openings due to collisions, and extending the service life of the self-circulating air door panel and the cabinet.

[0119] Example 2

[0120] This embodiment is an extension of Embodiment 1, and will continue to be referred to... Figures 3 to 6 As shown, a rectangular handle frame 5 is integrally provided on the side of the upper frame 31 away from its adhesive plate 304; along the thickness direction X of the ventilation plate 1, the orthographic projection of the handle frame 5 is rectangular; along the height direction Z of the ventilation plate 1, the orthographic projection of the handle frame 5 coincides with the orthographic projection of the outer limiting strip 307 and the inner side plate 301 of the upper frame 31.

[0121] The wide side of the handle frame 5 near the outer side plate 302 is an arc surface that is concave away from the outer side plate 302.

[0122] Specifically, a rectangular handle frame 5 is integrally formed on the side of the upper frame 31 away from its adhesive plate 304. The length of the handle frame 5 is exactly the same as the length of the upper frame 31 to ensure the structural integrity and stress balance of the handle frame 5. Along the thickness direction X of the ventilation plate 1, the orthographic projection of the handle frame 5 is rectangular; along the height direction Z of the ventilation plate 1, the orthographic projection of the handle frame 5 coincides with the orthographic projection of the outer limiting strip 307 and the inner side plate 301 of the upper frame 31.

[0123] The wide side of the handle frame 5 near the outer panel 302 is an arc surface that is recessed away from the outer panel 302. The radius of the arc surface can be controlled between 25mm and 30mm, and the depth of the recess can be between 5mm and 8mm, which perfectly fits the natural curvature of human fingers gripping.

[0124] The above solution further enhances the pull function of the self-circulating air door panel provided in this embodiment. When a person stands in front of the cabinet and opens the self-circulating air door panel, the user moves closer to the cabinet door and further away from the handle groove 305. The handle frame 5 further expands the function of the handle groove 305 of the self-circulating air door panel, allowing the panel to be pulled from a greater distance. Furthermore, the concave arc surface closely matches the gripping posture of the fingers, increasing the contact area while distributing force, avoiding the slippery drawbacks of traditional flat handles, and ensuring a stable grip even with wet hands or while wearing gloves.

[0125] The technical features of this invention are mutually complementary and functionally supportive of each other. In other words, the technical solution is not a “simple superposition” of technical features among multiple prior art documents. Therefore, this invention does not fall under the category of “simple superposition” in Chapter 4 of Part II of the Patent Examination Guidelines.

[0126] While specific embodiments of the invention have been described in detail by way of examples, those skilled in the art should understand that the examples are for illustrative purposes only and not intended to limit the scope of the invention. Those skilled in the art should understand that modifications can be made to the above embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.

Claims

1. A self-circulating air door panel, characterized in that, include: Rectangular ventilation panels, rectangular decorative panels, hollow rectangular ring frame components, and circulation components; The ventilation panel is arranged parallel to the decorative panel, and the ventilation panel is located on the side closer to the inside of the cabinet; the ventilation panel has at least 10 circular ventilation holes along its thickness direction; along the thickness direction of the ventilation panel, the orthographic projection of the ventilation panel is located within the orthographic projection of the decorative panel. The frame assembly includes frame members and corner brackets; the frame members include upper and lower frame members that are parallel to each other, as well as left and right frame members that are parallel to each other, and the upper, left, lower, and right frame members are connected end to end to form a hollow rectangular ring; the vertical line of the hollow rectangular ring coincides with the vertical line of the ventilation plate and / or the decorative panel; The ventilation panel is glued to the side of the hollow rectangular ring near the cabinet body. The four sides of the ventilation panel are respectively connected to the sides of the upper frame, left frame, lower frame, and right frame away from the decorative panel. The decorative panel is glued to the edge of the hollow rectangular ring away from the cabinet body. The four sides of the decorative panel are respectively connected to the sides of the upper frame, left frame, lower frame, and right frame away from the ventilation panel. There is a gap between the decorative panel and the ventilation panel, and the frame, decorative panel, and ventilation panel form a cubic accommodating space. The upper frame, left frame, lower frame, and right frame are all hollow trapezoidal plates. The projection of the hollow trapezoidal plate along the thickness direction of the ventilation plate is an isosceles trapezoid, and the orthographic projection along the direction from the left frame to the right frame is a rectangle. The hollow trapezoidal plate includes parallel inner and outer side plates, as well as parallel grooved plates and adhesive plates. Along the thickness direction of the ventilation plate, the side of the inner side plate closest to the decorative panel and the side of the outer side plate closest to the decorative panel are integrally connected to the opposite sides of the adhesive plate. The length of the adhesive plate is the same as the maximum length of the outer or inner side plate. The grooved plate is integrally disposed between the inner and outer side plates, and a first C-shaped hand groove is formed between the grooved plate, part of the inner side plate, and part of the outer side plate, with the opening of the first C-shaped hand groove facing away from the adhesive plate. An outer limiting strip extending along its length is integrally provided on the side of the outer side plate away from the adhesive board and on the side away from the inner side plate; the outer limiting strip is in the shape of an isosceles trapezoid; an inner limiting strip extending along its length is glued to the side of the inner side plate away from the adhesive board and on the side away from the outer side plate; the inner limiting strip is in the shape of an isosceles trapezoid, and the maximum length of both the inner limiting strip and the outer limiting strip is the same as the maximum length of the inner side plate or the outer side plate; An integral snap-fit ​​groove is provided between the outer side plate and the inner side plate, and the snap-fit ​​groove is located between the grooved plate and the adhesive plate; along the length direction of the hollow trapezoidal plate, the snap-fit ​​groove has the same length as the hollow trapezoidal plate; the snap-fit ​​groove has a rectangular ventilation gap along the width direction of the hollow trapezoidal plate; The corner code includes a top left corner code, a top right corner code, a bottom left corner code, and a bottom right corner code. The top left corner code, the top right corner code, the bottom left corner code, and the bottom right corner code have the same structure, all being L-shaped blocks. The two ends of the top left corner code along its length are respectively inserted into one end of the upper frame component's locking groove and one end of the left frame component's locking groove. The two ends of the bottom left corner code along its length are respectively inserted into the other end of the left frame component's locking groove and one end of the lower frame component's locking groove. The two ends of the bottom right corner code along its length are respectively inserted into the other end of the lower frame component's locking groove and one end of the right frame component's locking groove. The two ends of the top right corner code along its length are respectively inserted into the other end of the right frame component's locking groove and the other end of the upper frame component's locking groove. The adhesive plate of the lower frame has rectangular ventilation holes; along the height direction of the ventilation plate, the orthographic projection of the ventilation holes is located between the orthographic projection of the decorative panel and the orthographic projection of the ventilation plate; the grooved plate on the lower frame has rounded rectangular holes, and a dustproof and breathable plug is elastically engaged in the rounded rectangular holes. The circulation component includes a fan, a disinfection device, a filter, and a controller; the fan, the disinfection device, and the filter are all electrically connected to the controller; the handle groove of the lower frame has a circular power connection hole, through which the fan, the disinfection device, and the filter are connected to an external power source; The fan is located within the cubic accommodating space, with one wide side of it glued to the side of the ventilation plate near the decorative panel; the fan is glued to and penetrates the disinfection device on the side near the lower frame; the side of the disinfection device away from the fan is glued and fixed to the side of the adhesive plate of the lower frame away from its grooved plate; along the height direction of the ventilation plate, the orthographic projection of the ventilation hole is located within the orthographic projection of the disinfection device; the filter is glued and fixed to the middle of the snap-fit ​​groove of the lower frame; along the height direction of the ventilation plate, the orthographic projection of the round-headed rectangular hole is located within the orthographic projection of the filter.

2. The self-circulating air door panel according to claim 1, characterized in that, The inner limiting strip has an L-shaped groove on the side near the adhesive plate and the side near the inner side plate. The L-shaped groove and the inner side plate form a rectangular inner fixing groove with the opening facing the adhesive plate. The inner fixing groove of the upper frame, the inner fixing groove of the left frame, the inner fixing groove of the lower frame, and the inner fixing groove of the right frame respectively engage with the four sides of the ventilation plate along its periphery.

3. The self-circulating air door panel according to claim 1, characterized in that, The cross-sections of the upper left, upper right, lower left, and lower right corner codes perpendicular to their length direction are all I-shaped, and their orthographic projections along the thickness direction of the ventilation plate are all first L-shaped. The snap-fit ​​groove includes four L-shaped strips; the cross-section of each L-shaped strip perpendicular to its length direction is a second L-shaped. Two of the L-shaped strips are glued and fixed to the side of the outer side plate near the inner side plate along the length extension direction of the outer side plate, and their inner right angles face each other. The other two L-shaped strips are glued and fixed to the side of the inner side plate near the outer side plate along the length extension direction of the inner side plate, and their inner right angles face each other. There is a ventilation gap between the two L-shaped strips on the outer side plate and the two L-shaped strips on the inner side plate. Along the thickness direction of the ventilation plate, the orthographic projections of the two L-shaped strips on the outer side plate and the two L-shaped strips on the inner side plate coincide. Along the thickness direction of the ventilation plate, the upper left corner code, the upper right corner code, the lower left corner code, and the lower right corner code each have four circular corner code holes, and the four circular corner code holes are evenly distributed along the length direction of the first L-shape; the outer side plate has four circular corner code fixing holes corresponding to the corner code hole positions; 2 is a positive integer; The two corner bracket fixing holes of the upper frame and the two corner bracket fixing holes of the left frame are bolted together to correspond to the four corner bracket holes of the upper left corner bracket; the two corner bracket fixing holes of the lower frame and the two corner bracket fixing holes of the left frame are bolted together to correspond to the four corner bracket holes of the lower left corner bracket; the two corner bracket fixing holes of the upper frame and the two corner bracket fixing holes of the right frame are bolted together to correspond to the four corner bracket holes of the upper right corner bracket; the two corner bracket fixing holes of the lower frame and the two corner bracket fixing holes of the right frame are bolted together to correspond to the four corner bracket holes of the lower right corner bracket.

4. The self-circulating air door panel according to claim 1, characterized in that, The dustproof and breathable plug includes a round-headed rectangular strip and a rectangular elastic block; the round-headed rectangular strip is parallel to and engages with the round-headed rectangular hole, and is on the same horizontal plane as the round-headed rectangular hole; the round-headed rectangular strip has at least 3 rectangular ventilation holes along its thickness direction. The elastic block is integrally disposed on the adhesive plate side of the round-headed rectangular strip near the lower frame; eight elastic blocks are symmetrically disposed along the periphery of the round-headed rectangular strip; the maximum distance between two symmetrical elastic blocks is greater than the length of the connecting line of the round-headed rectangular strip at this point.

5. The self-circulating air door panel according to claim 4, characterized in that, The cross-sectional shape of the elastic block perpendicular to the periphery of the round-headed rectangular strip is a third L-shape. The third L-shape of the elastic block and the round-headed rectangular strip form a second C-shaped structure. The orientation of the second C-shaped structure is away from the central axis of the round-headed rectangular strip.

6. The self-circulating air door panel according to claim 1, characterized in that, A T-shaped groove is provided on the side of the inner limiting strip away from the inner side plate. The length and extension direction of the T-shaped groove are the same as the length and extension direction of the inner limiting strip. The cross-sectional shape of the T-shaped groove perpendicular to its length direction is a first T-shape. The groove opening faces away from the inner side plate. A shock-absorbing strip is elastically engaged within the T-slot; the length of the shock-absorbing strip is equal to the length of the T-slot; the shock-absorbing strip includes a T-shaped engaging portion and an arc-shaped anti-collision portion; perpendicular to the length direction of the shock-absorbing strip, the shape of the T-shaped engaging portion is a second T-shaped shape that fits the first T-shape, and the arc-shaped anti-collision portion is fan-shaped; one side of the arc-shaped anti-collision portion corresponding to the straight edge of the fan-shaped portion contacts the side of the inner limiting strip away from the inner side plate, and is integrally connected to the T-shaped engaging portion.

7. The self-circulating air door panel according to claim 1, characterized in that, The upper frame has an integral rectangular handle frame on the side away from the adhesive board; the orthographic projection of the handle frame is rectangular along the thickness direction of the ventilation plate; the orthographic projection of the handle frame coincides with the orthographic projection of the outer limiting strip and the inner side plate of the upper frame. The wide side of the handle frame near the outer side plate is an arc surface that is concave away from the outer side plate.

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