Invisible tuyere device

Abstract

The utility model discloses an invisible air port device which comprises a support, a shutter assembly, a monitoring assembly and a filtering assembly. The support comprises a supporting plate and silencing cotton. The supporting plate comprises a first side plate, a third side plate, a second side plate and a fourth side plate. The silencing cotton comprises first silencing cotton, second silencing cotton, third silencing cotton and fourth silencing cotton; the shutter assembly comprises a vertical shutter set and a transverse shutter set, and the vertical shutter set is located above the transverse shutter set. The monitoring assembly comprises a machine shell, a displayer, a microprocessor and a sensor, and the filtering assembly is located below the supporting plate. A vertex angle between the first side plate and the third side plate, a vertex angle between the first side plate and the fourth side plate, a vertex angle between the second side plate and the third side plate and a vertex angle between the second side plate and the fourth side plate are respectively connected with each vertex angle of the filter assembly. The utility model can be universally used in a ventilation system, an air-conditioning system or a fresh air system, and is invisible in installation and simple to detach and wash; air quality monitoring can be performed, and ventilation noise is reduced.

Description

Technical Field

[0001] This utility model relates to the field of ventilation system technology, and more specifically, to a concealed air vent device. Background Technology

[0002] Air vents are an important technical component of ventilation, air conditioning, or fresh air systems, and are widely used in residential, office, and shopping mall buildings. Air vents are the part that introduces air that has been filtered, purified, cooled, or heated by the ventilation, air conditioning, or fresh air system into the room. In the current technology, ventilation, air conditioning, or fresh air systems are often set up independently, either on the main unit of the respective ventilation, air conditioning, or fresh air system, or installed separately.

[0003] Chinese Patent Application Document 1 (Application No.: 202110591174X, Application Date: 2021.05.28) discloses an intelligent air vent for a ventilation and air conditioning system, including a frame 1' and an inner frame 2'. The inner frame 2' contains a multi-layer independently controlled louver assembly 3'. The inner frame 2' is equipped with an anemometer. The side of the frame 1' is provided with several battery compartments 8'. The side of the frame 1' is also provided with a main controller 11' connected to the battery compartments 8', as well as a mechanical actuation module 12' and an air balance module 13 connecting the battery compartments 8' and the main controller 11'. The human tracking module 14', environmental detection module 15', and mechanical execution module 12' are respectively connected to motor 4'. The environmental detection module 15' is connected to various sensors set on the inner frame 2'. The human tracking module 14' is connected to a camera and / or thermal imager set on the outer frame 1'. The above-mentioned intelligent air vents can only be used in air conditioning systems, which limits their application scope. At the same time, the above-mentioned intelligent air vents are inconvenient to install and cumbersome to disassemble and clean. Furthermore, the design is complex, the device is heavy, and the operating noise is loud. It cannot be used in high ceiling positions, and the installation occupies human activity space.

[0004] Chinese Patent Application Document 2 (Application No. 2019110642657, Application Date: 2019.11.04) discloses an intelligent blower device, which has a main body and an air duct assembly for guiding air, and is also provided with a sensor assembly and a processing device. The processing device is connected to the sensor assembly, and the sensor assembly and the processing device are respectively assembled on the main body. The above solution also has the defects of the aforementioned Chinese Patent Application Document 1.

[0005] In existing implementation techniques, the required air outlet model and size need to be determined based on the air volume (supply air, return air, or exhaust air) and the allowable wind speed range at the air outlet neck (or air outlet inlet / outlet cross-section). This then determines the arrangement and installation method of the selected air outlet and its connection to the duct. This method firstly increases the pre-installation work for installers, reducing their efficiency; secondly, the uncommon model and size limits the application scenarios. Furthermore, in existing implementation techniques, the shape of the air outlet design makes disassembly and cleaning inconvenient. After long-term use, the air outlet accumulates a large amount of dust, and the structural design creates numerous blind spots for cleaning.

[0006] Therefore, it can meet the needs of air quality monitoring; the device itself is lightweight, quick to install, and easy to disassemble and clean after installation; it can be used in ventilation systems, air conditioning systems, or fresh air systems, and the concealed air outlet device that can reduce ventilation noise is a technical problem that urgently needs to be solved in this field. Utility Model Content

[0007] In view of this, the present invention provides a concealed air vent device to solve the problems that it cannot be used in ventilation systems, air conditioning systems or fresh air systems, is not concealed during installation, is not easy to disassemble and clean, and cannot be used for air quality monitoring or to reduce ventilation noise.

[0008] This application provides a concealed air vent device, including a bracket, a louver assembly, a monitoring assembly, and a filter assembly. The bracket includes a support plate and sound-absorbing cotton. The support plate includes a first side plate, a third side plate, a second side plate, and a fourth side plate connected sequentially and forming a U-shaped structure. At least two Π-shaped through holes are respectively formed on the first, second, third, and fourth side plates. The sound-absorbing cotton includes a first sound-absorbing cotton, a second sound-absorbing cotton, a third sound-absorbing cotton, and a fourth sound-absorbing cotton. The first sound-absorbing cotton is attached to the side of the first side plate away from the second side plate, the second sound-absorbing cotton is attached to the side of the second side plate away from the first side plate, the third sound-absorbing cotton is located on the side of the third side plate away from the fourth side plate, and the fourth sound-absorbing cotton is attached to the side of the fourth side plate away from the third side plate. The louver assembly includes a vertical louver group and a horizontal louver group, with the vertical louver group located above the horizontal louver group. The vertical louver group includes at least two vertical louver blades. The vertical louvers along the direction from the third side plate to the fourth side plate have their heads and tails respectively engaged with the ∏-shaped through holes in the first and second side plates; the horizontal louver group includes at least two horizontal louvers, with their heads and tails respectively inserted into the ∏-shaped through holes in the third and fourth side plates along the direction from the third side plate to the fourth side plate; the monitoring assembly includes a housing, a display, a microprocessor, and a sensor, with the housing located between the third side plate and the third sound-absorbing cotton, the housing having a hollow L-shaped structure, the display located on the outer bottom surface of the hollow L-shaped structure, and the sensor and microprocessor located inside the hollow L-shaped structure, with the sensor and microprocessor electrically connected; the filter assembly is located below the support plate, with the apex corners between the first and third side plates, between the first and fourth side plates, between the second and third side plates, and between the second and fourth side plates respectively connected to the respective apex corners of the filter assembly.

[0009] Compared with the prior art, the concealed air vent device provided by this utility model achieves at least the following beneficial effects:

[0010] First, the concealed air vent device provided by this utility model can be adapted to the installation of air vents of various sizes. Furthermore, the first, second, third, and fourth side plates provided by this utility model can all be specifically cut, eliminating the need for additional size customization during installation, thus saving economic costs and installation time. Additionally, the first, second, third, and fourth side plates provided by this utility model can be freely spliced ​​together using self-tapping screws or interlocking methods, increasing the flexibility of installation. Moreover, the first, second, third, and fourth side plates provided by this utility model are all plates with a diameter not exceeding 0.5 mm, allowing for on-site cutting using common, simple tools. Secondly, the concealed air vent device provided by this utility model has multiple air monitoring functions and is easy to disassemble and clean. The sensor provided by this utility model can detect the airflow index, making the concealed air vent device applicable to various places and equipment needs. Furthermore, this utility model overcomes the shortcomings of previous vents that were prone to dust accumulation and difficult to disassemble and clean. The first, second, third, and fourth side panels of this utility model can all be hidden and fixedly installed in the perforations along the thickness direction of the wall, making it difficult for dust to accumulate. In addition, the louver assembly can also be removed from the first, second, third, and fourth side panels, so that the louver assembly can be cleaned. Third, the concealed air vent device provided by this utility model is lightweight and easy to install discreetly. The device utilizes the adaptive splicing of the first, second, third, and fourth side plates to allow for concealed installation within the wall. Furthermore, the thickness of each side plate does not exceed a certain mm, resulting in a lightweight design. The device is also fixedly installed in the wall along its thickness direction via a snap-fit ​​mechanism, leaving no protruding parts on the wall surface, thus achieving a concealed installation. Additionally, sound-absorbing cotton is incorporated to further eliminate noise, making the air vent even quieter.

[0011] Of course, any product implementing this utility model does not necessarily need to achieve all the technical effects described above simultaneously. Other features and advantages of this utility model will become clear from the following detailed description of exemplary embodiments with reference to the accompanying drawings. Attached Figure Description

[0012] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments of the present invention and, together with their description, serve to explain the principles of the present invention.

[0013] Figure 1 This is a structural schematic diagram of an intelligent air vent for a ventilation and air conditioning system provided in Chinese patent application document 1;

[0014] Figure 2This is a schematic diagram of the structure of the concealed air vent device provided by this utility model from one direction;

[0015] Figure 3 This is a structural schematic diagram of the concealed air vent device provided by this utility model from another direction;

[0016] Figure 4 This is a structural schematic diagram of the first side plate provided by this utility model;

[0017] Figure 5 This is an assembly drawing of a first side plate, a third side plate, a second side plate, and a fourth side plate provided by this utility model;

[0018] Figure 6 This is a schematic diagram of the structure of the louver assembly provided by this utility model;

[0019] Figure 7 This is a schematic diagram of the structure of the monitoring component provided by this utility model;

[0020] Figure 8 This is a bottom view of the bracket, corner fixer, edge fixing strip, and monitoring component provided by this utility model;

[0021] Figure 9 This is an assembly diagram of the bracket, louver assembly, filter assembly, and monitoring assembly provided by this utility model from one direction.

[0022] Figure 10 This is another assembly diagram of the bracket, louver assembly, filter assembly and monitoring assembly provided by this utility model;

[0023] Figure 11 This is a structural schematic diagram of the first corner fixator provided by this utility model;

[0024] Figure 12 This is a structural schematic diagram of the third angle fixator provided by this utility model;

[0025] Figure 13 This is a structural schematic diagram of the fourth corner fixator provided by this utility model;

[0026] Figure 14 This is a structural schematic diagram of the second corner fixator provided by this utility model;

[0027] Figure 15 This is an assembly diagram of the first side plate, the third side plate, and the first corner fixer provided by this utility model;

[0028] Figure 16 This is an assembly diagram of the first side plate, the fourth side plate, and the second corner fixer provided by this utility model;

[0029] Figure 17This is an assembly diagram of the corner fixer and edge fixing strip provided by this utility model. Detailed Implementation

[0030] 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 present invention.

[0031] 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. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all 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. It should be noted that similar reference numerals and letters in the following figures denote similar items; therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0032] Reference Figures 2-4 As shown, Figure 2 This is a schematic diagram of the structure of the concealed air vent device provided by this utility model from one direction; Figure 3 This is a structural schematic diagram of the concealed air vent device provided by this utility model from another direction; Figure 4This is a structural schematic diagram of the first side panel provided by this utility model. This embodiment provides a concealed air vent device, including a bracket 1, a louver assembly 2, a monitoring assembly 3, and a filter assembly 4. The bracket 1 includes a support plate 5 and sound-absorbing cotton 6. The support plate 5 includes a first side panel 51, a third side panel 53, a second side panel 52, and a fourth side panel 54 connected sequentially and forming a U-shaped structure. At least two Π-shaped through holes 71 are respectively opened on the first side panel 51, the second side panel 52, the third side panel 53, and the fourth side panel 54. The sound-absorbing cotton 6 is packaged... The assembly includes a first sound-absorbing cotton 61, a second sound-absorbing cotton 62, a third sound-absorbing cotton 63, and a fourth sound-absorbing cotton 64. The first sound-absorbing cotton 61 is attached to the side of the first side plate 51 away from the second side plate 52; the second sound-absorbing cotton 62 is attached to the side of the second side plate 52 away from the first side plate 51; the third sound-absorbing cotton 63 is located on the side of the third side plate 53 away from the fourth side plate 54; and the fourth sound-absorbing cotton 64 is attached to the side of the fourth side plate 54 away from the third side plate 53. The louver assembly 2 includes a vertical louver group 2S and... A horizontal louver group 2H and a vertical louver group 2S are located above the horizontal louver group 2H. The vertical louver group 2S includes at least two vertical louver blades 21S, with their ends respectively engaged with the ∏-shaped through holes 71 in the first side plate 51 and the second side plate 52 along the direction from the third side plate 53 to the fourth side plate 54. The horizontal louver group 2H includes at least two horizontal louver blades 21H, with the horizontal louver blades 21S engaged with the first side plate 51 and the second side plate 52 along the direction from the third side plate 53 to the fourth side plate 54. The head and tail ends of H are respectively inserted into the ∏-shaped through holes 71 of the third side plate 53 and the fourth side plate 54; the monitoring component 3 includes a housing 32, a display 31, a microprocessor (not shown in the figure) and a sensor (not shown in the figure). The housing 32 is located between the third side plate 53 and the third sound-absorbing cotton 63. The housing 32 is a hollow L-shaped structure. The display 31 is located on the outer bottom surface of the hollow L-shaped structure. The sensor and the microprocessor are located inside the hollow L-shaped structure. The sensor and the microprocessor are electrically connected.

[0033] The filter assembly 4 is located below the support plate 5. The apex corners between the first side plate 51 and the third side plate 53, the first side plate 51 and the fourth side plate 54, the second side plate 52 and the third side plate 53, and the second side plate 52 and the fourth side plate 54 are respectively connected to the respective apex corners of the filter assembly 4.

[0034] Specifically, continue to refer to Figures 2-5 As shown, Figure 5 This is an assembly drawing of a first side plate, a third side plate, a second side plate, and a fourth side plate provided by this utility model; the above-mentioned concealed air vent device can be an adjustable air vent device or an air vent device.

[0035] The first side plate 51, the second side plate 52, the third side plate 53, and the fourth side plate 54 mentioned above are all plate structures. The first side plate 51, the third side plate 53, the second side plate 52, and the fourth side plate 54 are made of steel. The width of the first side plate 51, the third side plate 53, the second side plate 52, and the fourth side plate 54 is 30mm or 38mm. The thickness of the first side plate 51, the third side plate 53, the second side plate 52, and the fourth side plate 54 is between 0.5mm and 1.5mm. This embodiment takes a width of 30mm and a thickness of 0.5mm as an example.

[0036] The widths of the first side plate 51, the third side plate 53, the second side plate 52, and the fourth side plate 54 are all the same; the first side plate 51 and the second side plate 52 are parallel and of the same length; the third side plate 53 and the fourth side plate 54 are parallel and of the same length; at least two π-shaped through holes 71 in the first side plate 51 and the second side plate 52 penetrate in the direction from the first side plate 51 to the second side plate 52 and are arranged in the direction from the third side plate 53 to the fourth side plate 54, and at least two π-shaped through holes 71 in the third side plate 53 and the fourth side plate 54 penetrate in the direction from the third side plate 53 to the fourth side plate 54 and are arranged in the direction from the first side plate 51 to the second side plate 52.

[0037] The length of both the first side panel 51 and the second side panel 52 is X, which is the same as the width of the wall where the concealed air vent device is to be installed. The distance between two adjacent π-shaped through holes 71 on the first side panel 51 and the second side panel 52 is M, where M is greater than 25mm. Each π-shaped through hole 71 is arranged linearly and arithmetically along the length extension direction of the first side panel 51, the third side panel 53, the second side panel 52, or the fourth side panel 54. The opening direction of the π-shape is perpendicular to the direction Z from the vertical louver group 2S to the horizontal louver group 2H. The projections of the π-shaped through holes 71 on the first side panel 51 and the π-shaped through holes 71 on the second side panel 52 completely coincide in the forward or rearward viewing direction.

[0038] A first sound-absorbing cotton 61 is provided on the side of the first side plate 51 away from the second side plate 52. The first sound-absorbing cotton 61 is provided along the length extension direction of the first side plate 51. The first side plate 51 and the side of the wall where the concealed air vent device is to be installed together clamp the first sound-absorbing cotton 61. The first side plate 51 and the first sound-absorbing cotton 61 can be installed and fixed on the side of the wall where the concealed air vent device is to be installed by four self-tapping screws 8. In the first π-shaped through hole 71 and the last π-shaped through hole 71 along the length extension direction of the first side plate 51, the four self-tapping screws 8 are screwed into the wall from the inside of the first π-shaped through hole 71 and the last π-shaped through hole 71, respectively. A second sound-absorbing cotton 62 is provided on the side of the second side plate 52 away from the first side plate 51. The second sound-absorbing cotton 62 is provided along the length of the second side plate 52. The second side plate 52 and one side of the wall where the concealed air vent device is to be installed together clamp the second sound-absorbing cotton 62. The second side plate 52 and the second sound-absorbing cotton 62 can be installed and fixed on one side of the wall where the concealed air vent device is to be installed by four self-tapping screws 8. On the second side plate 52, four self-tapping screws 8 are screwed into the wall from the first Π-shaped through hole 711 and the final Π-shaped through hole 712, respectively.

[0039] Optionally, depending on the actual installation length of the first side plate 51 and the second side plate 52, the number of self-tapping screws 8 can be increased between the first Π-shaped through hole 71 and the last Π-shaped through hole 71 of the first side plate 51 and the second side plate 52, so that the connection between the first side plate 51 and the second side plate 52 on the wall is more stable.

[0040] Continue to refer to Figure 2 - Figure 5 As shown, taking the plurality of ∏-shaped through holes 71 on the first side plate 51 or the second side plate 52 as a reference: among the plurality of ∏-shaped through holes 71, the last ∏-shaped through hole 71 in the ∏-shaped opening direction is the first ∏-shaped through hole 711, and the ∏-shaped through hole 71 furthest away from the first ∏-shaped through hole 711 is the final ∏-shaped through hole 712; the orientation of the ∏-shaped through holes 71 on the first side plate 51 and the second side plate 52 is the same as the length extension direction of the first side plate 51 and the second side plate 52; the side plate clamped on the first side plate 51 and the second side plate 52 near the end of the first ∏-shaped through hole 711 is the fourth side plate 54, and the plate clamped on the non-first ∏-shaped through hole 711 is the third side plate 53; the third side plate 53 and the fourth side plate 54 are arranged relatively parallel.

[0041] The length of the third side plate 53 is Y1; the value of Y1 is equal to the distance from the first side plate 51 to the second side plate 52, the thickness of the first side plate 51, and the thickness of the second side plate 52. Both ends of the third side plate 53 along its length extension direction can be inserted into the first ∏-shaped through holes 711 of the first side plate 51 and the second side plate 52, respectively. Specifically, the third side plate 53 is inserted from the side of the first ∏-shaped through hole 711 closest to the filter assembly 4 along the width extension direction of the first side plate 51 or the second side plate 52. A housing 32 is provided on the side of the third side plate 53 away from the fourth side plate 54, and the housing 32 is positioned along the width extension direction of the third side plate 53. The height of the housing 32 is the same as the height of the third side plate 53, and the third side plate 53 can be fixedly connected to the housing 32 by self-tapping screws 8.

[0042] Continue to refer to Figures 2-5 As shown, the length of the fourth side plate 54 is Y2. The specific value of Y2 varies depending on the length of the first side plate 51 (X) and the second side plate 52, resulting in two possible connection methods between the fourth side plate 54 and the first side plate 51 and the second side plate 52.

[0043] In scenario one, along the length extension direction of the first side plate 51, the shortest distance from the first π-shaped through hole 711 to the nearest end is X1, and the shortest distance from the final π-shaped through hole 712 to the nearest end is X2. When the sum of X1 and X2 equals the distance between two adjacent π-shaped through holes 71, i.e., X1 + X2 = M: the length of Y2 is equal to Y1, i.e., the length of the fourth side plate 54 is the same as that of the third side plate 53; the size of Y2 is equal to the distance from the first side plate 51 to the second side plate 52, the thickness of the first side plate 51, and the thickness of the second side plate 52. At this time, the installation method of the fourth side plate 54 is the same as that of the third side plate 53. The final π-shaped through holes 712 of the first side plate 51 and the second side plate 52 can be inserted into the two ends of the fourth side plate 54 along its length extension direction, respectively. Specifically, it is inserted from the end of the final π-shaped through hole 712 near the filter assembly 4 along the height extension direction of the final π-shaped through hole 712.

[0044] In scenario two, along the length extension direction of the first side plate 51, the shortest distance from the first π-shaped through hole 711 to the nearest end is X1, and the shortest distance from the final π-shaped through hole 712 to the nearest end is X2. When the sum of X1 and X2 is not equal to the distance between two adjacent π-shaped through holes 71, i.e., X1 + X2 ≠ M: the value of Y2 is equal to the distance from the first side plate 51 to the second side plate 52, and the fourth side plate 54 is clamped by the first side plate 51 and the second side plate 52. The fourth side plate 54 can be fixed to one side of the wall by at least two self-tapping screws 8, and the self-tapping screws 8 can be screwed into the wall from any π-shaped through hole 71 on the fourth side plate 54.

[0045] It should be noted that: regardless of how the fourth side panel 54 is connected to the first side panel 51 and the second side panel 52, a fourth sound-absorbing cotton 64 is provided on the side of the fourth side panel 54 away from the third side panel 53. The fourth sound-absorbing cotton 64 is provided along the length of the fourth side panel 54, the length of the fourth sound-absorbing cotton 64 is equal to the distance from the first side panel 51 to the second side panel 52, and the thickness of the fourth sound-absorbing cotton 64 is equal to X2. The fourth side panel 54 and one side of the wall together clamp the fourth sound-absorbing cotton 64. The fourth sound-absorbing cotton 64 can be installed and fixed to one side of the wall where the concealed air vent device is to be installed through two self-tapping screws 8 on the fourth side panel 54.

[0046] Continue to refer to Figures 2-5 As shown, the first sound-absorbing cotton 61 and the second sound-absorbing cotton 62 have the same width; the first sound-absorbing cotton 61 is located on the side of the first side plate 51 away from the second side plate 52, and the second sound-absorbing cotton 62 is located on the side of the second side plate 52 away from the first side plate 51; the third sound-absorbing cotton 63 and the fourth sound-absorbing cotton 64 have the same width, the fourth sound-absorbing cotton 64 is located on the side of the fourth side plate 54 away from the third side plate 53, and the third sound-absorbing cotton 63 is located on the side of the housing 32 away from the third side plate 53; the long sides of the first sound-absorbing cotton 61, the second sound-absorbing cotton 62, the third sound-absorbing cotton 63 and the fourth sound-absorbing cotton 64 are all perpendicular to the width extension direction of the first side plate 51, the third side plate 53, the second side plate 52 or the fourth side plate 54.

[0047] Continue to refer to Figures 2-6 As shown, Figure 6 This is a schematic diagram of the structure of the louver assembly provided by this utility model; the vertical louver group 2S points in the direction from the horizontal louver group 2H, and the vertical louver group 2S is located above the side of the horizontal louver group 2H away from the filter assembly 4. The vertical louver group 2S includes at least two vertical louver blades 21S, which are arranged in the direction from the third side plate 53 to the fourth side plate 54 and extend in the direction from the first side plate 51 to the second side plate; in the direction from the third side plate 53 to the fourth side plate 54, the head and tail ends of the vertical louver blades 21S are respectively movably inserted into the ∏-shaped through holes 71 of the first side plate 51 and the second side plate 52.

[0048] The transverse louver group 2 includes at least two transverse louver blades 21H, which extend along the direction from the third side plate 53 to the fourth side plate and are arranged along the direction from the first side plate 51 to the second side plate. Along the direction from the third side plate 53 to the fourth side plate 54, the head and tail ends of the transverse louver blades 21H are respectively movably inserted into the ∏-shaped through holes 71 of the third side plate 53 and the fourth side plate 54.

[0049] Continue to refer to Figures 2-9 As shown, Figure 7 This is a schematic diagram of the structure of the monitoring component provided by this utility model; Figure 8This is a bottom view of the bracket, corner fixer, edge fixing strip, and monitoring component provided by this utility model; Figure 9 This is an assembly diagram of the bracket, louver assembly, filter assembly, and monitoring assembly provided by this utility model from one direction. The sensor and microprocessor are disposed inside the housing 32, the display 31 is disposed on one side of the housing 32, and the power cord passes through and is disposed on the other side of the housing 32 away from the display 31. The height of the housing 32 is the same as the height of the third side plate 53; the length of the housing 32 is greater than half the length of the third side plate 53 or the fourth side plate 54; the housing 32 is disposed along the length extension direction of the third side plate 53 on the side of the third side plate 53 away from the fourth side plate 54, specifically at the end of the third side plate 53 away from the first side plate 51; the width of the housing 32 is equal to the sum of the shortest distance (X1) from the first π-shaped through hole 711 to the nearest end and the width of the first π-shaped through hole 711.

[0050] This concealed air vent device has vents to allow air circulation.

[0051] A third sound-absorbing cotton 63 is provided along the length direction on the side of the housing 32 away from the third side plate 53. A display through hole 323 is provided on the side of the housing 32 near the filter assembly 4 and the end near the fourth side plate 54; the display through hole 323 is rectangular in shape and is used to install a display 31; a power port (not shown in the figure) is provided on the side of the housing 32 away from the filter assembly 4, and the power cable inside the housing 32 passes through the power port to the outside of the housing 32; a microprocessor and a sensor are also provided inside the housing 32. The sensor is used to detect the air quality of the vent; the microprocessor can be a single-chip microcomputer, such as an STM32C0 or STM32L0, and is used to convert the sensor input signal into a digital graphic signal that the display 31 can recognize, so that the display 31 can output the air quality information of the vent.

[0052] Continue to refer to Figure 2 and Figure 10 As shown, Figure 10 This is another assembly diagram of the bracket, louver assembly, filter assembly, and monitoring assembly provided by this utility model; the filter assembly 4 is located below the first side plate 51, the third side plate 53, the second side plate 52, and the fourth side plate 54. The apex corners between the first side plate 51 and the third side plate 53, the first side plate 51 and the fourth side plate 54, the second side plate 52 and the third side plate 53, and the second side plate 52 and the fourth side plate 54 are respectively connected to the respective apex corners of the filter assembly 4. One side of the filter assembly 4 is in contact with the first side plate 51, the third side plate 53, the second side plate 52, and the fourth side plate 54.

[0053] In practical use, this embodiment can be installed on walls, pipes, or other locations where concealed air vents need to be installed. The concealed air vent device provided in this embodiment can be adjusted to suit specific construction needs. The installation of this embodiment requires following a strict installation sequence. Taking wall installation as an example, the specific operation is as follows:

[0054] First, cut the first side plate 51 and the second side plate 52 to the appropriate length according to the width of the ventilation opening to be installed. Then, attach the first sound-absorbing cotton 61 and the second sound-absorbing cotton 62 to the first side plate 51 and the second side plate 52 respectively. Then, fix the first side plate 51 and the first sound-absorbing cotton 61, as well as the second side plate 52 and the second sound-absorbing cotton 62 to the opposite sides of the ventilation opening on the wall respectively through the self-tapping screws 8 and the π-shaped through holes 71.

[0055] The second step is to attach the third sound-absorbing cotton 63 to the wall near the first ∏-shaped through hole 711 on the side of the first side plate 51 and the second side plate 52. Further, hold the detection component with your left hand on the side of the third sound-absorbing cotton 63 away from the wall, so that the display 31 of the detection component faces the air outlet direction. At the same time, use your right hand to insert the third side plate 53 into the first ∏-shaped through hole 711 of the first side plate 51 and the second side plate 52, so that the two ends of the third side plate 53 are respectively inserted into the first ∏-shaped through hole 711 of the first side plate 51 and the first ∏-shaped through hole 711 of the second side plate 52.

[0056] A fourth sound-absorbing cotton 64 is attached to the wall on the side away from the third sound-absorbing cotton 63 and the third side plate 53; the side of the fourth sound-absorbing cotton 64 away from the wall contacts the casing 32. Depending on the actual length of the first side plate 51 and the second side plate 52, both ends of the third side plate 53 can be fixed to the wall by interlocking in the final ∏-shaped through holes 712 of the first side plate 51 and the second side plate 52, or directly fixed to the wall by self-tapping screws 8 and the ∏-shaped through holes 71 of the third side plate 53.

[0057] This further allows the power cord of the detection component to extend inside the wall and connect to the household circuit or power supply center.

[0058] Thirdly, a vertical louver group 2S is slidably installed within the ∏-shaped through holes 71 of the first side plate 51 and the second side plate 52. Specifically, the vertical louver group 2S provided in this embodiment has six vertical louver blades 21S, each fixed within the ∏-shaped through hole 71 of the first side plate 51 and the second side plate 52. A horizontal louver group 2H is slidably installed within the ∏-shaped through holes 71 of the third side plate 53 and the fourth side plate 54. Specifically, the horizontal louver group 2H provided in this embodiment has seven horizontal louver blades 21H, each fixed within the ∏-shaped through hole 71 of the third side plate 53 and the fourth side plate 54. Furthermore, the direction of airflow can be adjusted by adjusting the angles of the horizontal louver blades 21H and the vertical louver blades 21S.

[0059] The fourth step involves aligning the four corners of the filter assembly 4 with the included angles of the first side plate 51 and the third side plate 53, the first side plate 51 and the fourth side plate 54, the second side plate 52 and the third side plate 53, and the second side plate 52 and the fourth side plate 54. Then, the filter assembly 4 is fastened onto the wall inwards to fix the four corners of the filter assembly 4, and further fixing the movable third side plate 53 and the fourth side plate 54 to the first side plate 51 and the second side plate 52.

[0060] Compared with the prior art, the concealed air vent device provided in this embodiment achieves at least the following beneficial effects:

[0061] First, the concealed air vent device provided in this embodiment can be adapted to the installation of air vents of various sizes. Furthermore, the first side plate 51, second side plate 52, third side plate 53, and fourth side plate 54 provided in this embodiment can all be specifically cut, eliminating the need for additional size customization during installation, thus saving economic costs and installation time. Additionally, the first side plate 51, second side plate 52, third side plate 53, and fourth side plate 54 provided in this embodiment can be freely spliced ​​together using self-tapping screws 8 or a mating method, increasing the freedom of installation. Moreover, the first side plate 51, second side plate 52, third side plate 53, and fourth side plate 54 provided in this embodiment are all plates with a thickness not exceeding 1.5mm, allowing for on-site cutting using common, simple tools.

[0062] Secondly, the concealed air vent device provided in this embodiment has multiple air monitoring functions and is easy to disassemble and clean. The sensor provided in this embodiment can detect the airflow index, making the concealed air vent device applicable to various locations and equipment needs. Furthermore, this embodiment overcomes the shortcomings of previous vents that were prone to dust accumulation and difficult to disassemble and clean. The first side plate 51, the second side plate 52, the third side plate 53, and the fourth side plate 54 of this embodiment can all be concealed and fixedly installed in the perforations along the thickness direction of the wall, making it less prone to dust accumulation. In addition, the louver assembly 2 can also be removed from the first side plate 51, the second side plate 52, the third side plate 53, and the fourth side plate 54, so that the louver assembly 2 can be cleaned.

[0063] Third, the concealed air vent device provided in this embodiment is lightweight and easy to install discreetly. This embodiment utilizes the adaptive splicing of the dimensions of the first side plate 51, second side plate 52, third side plate 53, and fourth side plate 54 to allow the concealed air vent device to be installed discreetly within the wall. Furthermore, the thickness of each of the first side plate 51, second side plate 52, third side plate 53, and fourth side plate 54 does not exceed 1.5mm, resulting in a lightweight design. It is also fixedly installed in the ventilation opening along the thickness direction of the wall via a snap-fit ​​mechanism, leaving no protruding parts on the wall surface, thus achieving a concealed installation. Additionally, the addition of sound-absorbing cotton 6 further eliminates noise, making the ventilation opening even quieter.

[0064] In an alternative embodiment, continue to refer to Figures 2-3 As shown, the sensor includes a temperature measuring device (not shown), a humidity measuring device (not shown), a wind speed measuring device (not shown), and a converter (not shown). The temperature measuring device, humidity measuring device, wind speed measuring device, converter, and transducer are all electrically connected to the microprocessor.

[0065] Along the direction from the third side plate 53 to the fourth side plate 54, the orthographic projections of the temperature measuring device, humidity measuring device, wind speed measuring device, converter, transformer, and microprocessor do not overlap at all.

[0066] Specifically, the housing 32 has at least three housing through holes (not shown in the figure) on the side away from the filter assembly 4. The three housing through holes are used to install the thermistor in the temperature measuring device, the humidity sensor in the humidity measuring device, and the heating wire in the wind speed measuring device, respectively. The thermistor, humidity sensor, and heating wire all pass through the inside and outside of the housing 32, with some exposed on the outside of the housing 32. They are electrically connected to the microprocessor and converter inside the housing 32. The microprocessor transmits the measured and calculated temperature, humidity, and wind speed values ​​to the display 31, and transmits the air information of the vent to the user through the display 31.

[0067] Optionally, the temperature measuring device can be a TR series miniature resistance temperature meter, such as TR33 or TR21-C, or an NTC series miniature digital temperature sensor, such as NTC10K or NTC100K; the humidity measuring device can be a UT330 series miniature temperature and humidity meter, such as UT333S or UT333BT; the wind speed measuring device can be an FT-WQX6 sensor; and the converter can be an AD7799 analog-to-digital converter.

[0068] The above solution allows for real-time monitoring of the fresh air entering through the ventilation openings, providing timely information on the humidity, temperature, and wind speed of the fresh air. The temperature, humidity, and wind speed measuring devices all offer advantages such as rapid response, miniaturization, and high precision, meeting the needs of people's intelligent living.

[0069] In an alternative embodiment, continue to refer to Figures 2-10 As shown, the filter assembly 4 includes a filter cloth 41, corner retainers 42, and side fixing strips 43. The filter cloth 41 is a rectangular structure with filter holes. The corner retainers 42 and the side fixing strips 43 form an L-shaped structure or a T-shaped structure. Each apex of the filter cloth 41 is fixed to the apex between the first side plate 51 and the third side plate 53, the apex between the third side plate 53 and the second side plate 52, the apex between the second side plate 52 and the fourth side plate 54, and the apex between the fourth side plate 54 and the first side plate 51, respectively, through the corner retainers 42 and the side fixing strips 43.

[0070] Along the direction from the vertical louver group 2S to the horizontal louver group 2H, the orthographic projection of the filter cloth 41 and the orthographic projection of the display 31 do not overlap at all.

[0071] Specifically, the filter cloth 41 is a rectangular piece of cloth, and the material of the filter cloth 41 can be chemical fiber. The four sides of the filter cloth 41 are respectively inserted into the slits formed by the first side plate 51, the third side plate 53, the second side plate 52, and the fourth side plate 54 and the wall by four sets of edge fixing strips 43. The edge fixing strips 43 include four sets of rectangular strips, and the edge fixing strips 43 are used to fix the four sides of the filter cloth 41. The corner fixing device 42 is used to fix the four apex corners of the filter cloth 41, specifically, the four apex corners of the filter cloth 41 are respectively fixed at the apex corner away from the vertical louver group 2S between the first side plate 51 and the third side plate 53, the apex corner away from the vertical louver group 2S between the third side plate 53 and the second side plate 52, the apex corner away from the vertical louver group 2S between the second side plate 52 and the fourth side plate 54, and the apex corner away from the vertical louver group 2S between the fourth side plate 54 and the first side plate 51.

[0072] Along the direction from the vertical louver group 2S to the horizontal louver group 2H, the orthographic projection of the filter cloth 41 does not overlap with the orthographic projection of the display 31. The orthographic projection of the filter cloth 41 coincides within the projection of the square structure formed by the first side plate 51, the third side plate 53, the second side plate 52 and the fourth side plate 54.

[0073] Through the above solution, the filter cloth 41 can be connected to the first side plate 51, the third side plate 53, the second side plate 52, and the fourth side plate 54 and the wall, so as to filter the fresh air introduced into the ventilation opening and improve the air quality of the fresh air; and the vertical louver group 2S and the horizontal louver group 2H are hidden in the area of ​​the first side plate 51, the third side plate 53, the second side plate 52, and the fourth side plate 54 inside the wall, thereby improving the overall aesthetics of the concealed air vent device provided in this embodiment.

[0074] In an alternative embodiment, continue to refer to Figures 2-7 As shown, the first side plate 51, the second side plate 52, the third side plate 53 and the fourth side plate 54 respectively include an L-shaped part 72 and an I-shaped part 73 connected to the L-shaped part 72. The right angle of the L-shaped part 72 corresponds to one side of the square structure. A portion of the L-shaped part 72 and the I-shaped part 73 form an inverted L-shaped structure. The right angle of the inverted L-shaped structure is away from one side of the square structure.

[0075] The L-shaped section 72 and the I-shaped section 73 are respectively provided with π-shaped through holes 71. The π-shaped through hole 71 includes a rectangular hole 723 and two isosceles trapezoidal holes 724 connected to the rectangular hole 723. The rectangular hole 723 and the two isosceles trapezoidal holes 724 form the π-shaped through hole 71. The rectangular hole 723 passes through the side of the L-shaped section 72 near the I-shaped section 73 and the I-shaped section 73 along the direction of the support plate 5 pointing to the filter assembly 4.

[0076] Specifically, the L-shaped portion 72 and the I-shaped portion 73 are perpendicularly connected to each other. The L-shaped portion 72 and the I-shaped portion 73 are of equal length, and one side of the L-shaped portion 72 along its length extension direction is perpendicularly connected to one side of the I-shaped portion along its length extension direction. Both the L-shaped portion 72 and the I-shaped portion 73 are straight plates along their length extension direction, and the L-shaped portion 72 and the I-shaped portion 73 are integrally manufactured and made of the same material.

[0077] Along the direction from the vertical louver group 2S to the horizontal louver group 2H, the cross-section of the L-shaped part 72 is L-shaped. The L-shaped part 72 includes an L-shaped long part 721 and an L-shaped short part 722 perpendicularly connected to the L-shaped long part 721. The L-shaped long part 721 and the L-shaped short part 722 are integrally formed. Both the L-shaped long part 721 and the L-shaped short part 722 are rectangular plates with the same length and thickness. The width of the L-shaped long part 721 is at least three times the width of the L-shaped end. In this embodiment, the width of the L-shaped long part 721 can be 20mm, and the width of the L-shaped short part 722 can be 5mm. The large width ratio between the L-shaped long part 721 and the L-shaped short part 722 can facilitate the fixation of the L-shaped short part 722 to a fixed object through the L-shaped long part 721. The fixed object can be the wall, keel frame, and ventilation duct to which the concealed air vent device is to be installed. In this embodiment, a wall is used as an example.

[0078] Along the direction from the vertical louver group 2S to the horizontal louver group 2H, the cross-sectional shape of the I-shaped part 73 is I-shaped. One side of the I-shaped part 73 along its length extension direction is perpendicularly connected to one side of the L-shaped short part 722 along its length extension direction. The connection point is the side of the L-shaped short part 722 away from the L-shaped long part 721. The I-shaped part 73, the L-shaped long part 721 and the L-shaped short part 722 are an integral structure. The I-shaped part 73 and the L-shaped long part 721 are perpendicularly connected to each other at both ends of the L-shaped short part 722. Along the direction from the vertical louver group 2S to the horizontal louver group 2H, the projection of the I-shaped part 73 only partially overlaps with the projection of the L-shaped long part 721. The I-shaped part 73 is a rectangular plate with the same length and thickness as the L-shaped long part 721. The width of the I-shaped part 73 is at least twice the width of the L-shaped short part 722. In this embodiment, when the width of the L-shaped short part 722 is 5mm, the width of the I-shaped part 73 can be 10mm. The larger width ratio between the L-shaped short part 722 and the I-shaped short part can help to form a deeper groove between the fixed object, the L-shaped short part 722 and the I-shaped short part, which facilitates the secure engagement of the corner fixer 42 and the edge fixing strip 43.

[0079] The ∏-shaped through hole 71 consists of a rectangular hole 723 and two isosceles trapezoidal holes 724. The two isosceles trapezoidal holes 724 are parallel to each other, and the lower base of the two isosceles trapezoidal holes 724 has the same width as the rectangular hole 723. The lower base of the two isosceles trapezoidal holes 724 coincides with the hole wall of the rectangular hole 723, so that the two isosceles trapezoidal holes 724 are connected to the rectangular hole 723. The length extension direction of the two isosceles trapezoidal holes 724 is perpendicular to the length extension direction of the rectangular hole 723. The length extension direction of the rectangular hole 723 is the same as the width extension direction of the L-shaped part 72, that is, the rectangular hole 724... The length extension direction of 23 is the same as the direction from the vertical louver group 2S to the horizontal louver group 2H; the length of the rectangular hole 723 is less than the sum of the widths of the L-shaped part 72 and the I-shaped part 73, and the width of the rectangular hole 723 is greater than the thickness of the L-shaped part 72; along the direction from the vertical louver group 2S to the horizontal louver group 2H, the rectangular hole 723 simultaneously penetrates the entire I-shaped part 73 and part of the L-shaped part 72, and one end of the rectangular hole 723 along the length extension direction is on the same imaginary plane as the side of the I-shaped part 73 away from the L-shaped part 72; two isosceles trapezoidal holes 724 are specifically provided in the L-shaped part 72.

[0080] The L-shaped portion 72 and I-shaped portion 73 allow the first side plate 51, the second side plate 52, the third side plate 53, and the fourth side plate 54 to form grooves with the wall to engage the corner fixer 42 and the edge fixing strip 43, thus securing the corner fixer 42 and the edge fixing strip 43. Furthermore, the ∏-shaped through holes 71 on the L-shaped portion 72 and the I-shaped portion 73 allow the first side plate 51, the second side plate 52, the third side plate 53, and the fourth side plate 54 to engage with each other, allowing them to be sequentially connected to form a U-shaped structure.

[0081] In an alternative embodiment, continue to refer to Figure 2 and Figures 8-17 As shown, Figure 11 This is a structural schematic diagram of the first corner fixator provided by this utility model; Figure 12 This is a structural schematic diagram of the third angle fixator provided by this utility model; Figure 13 This is a structural schematic diagram of the fourth corner fixator provided by this utility model; Figure 14 This is a structural schematic diagram of the second corner fixator provided by this utility model; Figure 15 This is an assembly diagram of the first side plate, the third side plate, and the first corner fixer provided by this utility model; Figure 16 This is an assembly diagram of the first side plate, the fourth side plate, and the second corner fixer provided by this utility model; Figure 17This is an assembly diagram of the corner retainer and edge fixing strip provided by this utility model; the corner retainer 42 includes a first corner retainer 421, a second corner retainer 424, a third corner retainer 422 and a fourth corner retainer 423;

[0082] The first corner retainer 421 and the third corner retainer 422 are mirror-symmetrical L-shaped structures. The L-shaped structure of the first corner retainer 421 contacts the inverted L-shaped structure of the first side plate 51. The first corner retainer 421 has a first Z-shaped groove 4211 corresponding to the third side plate 53 on the side of the first side plate 51 near the third side plate 53.

[0083] The L-shaped structure of the third corner retainer 422 contacts the inverted L-shaped structure of the second side plate 52; the third corner retainer 422 is provided with a second Z-shaped groove 4221 corresponding to the third side plate 53 on the side of the second side plate 52 near the third side plate 53, and the two ends of the third side plate 53 along the direction from the first side plate 51 to the second side plate 52 are respectively engaged with the first Z-shaped groove 4211 and the second Z-shaped groove 4221;

[0084] The second corner fastener 424 includes a first fastener body 4241, a first cuboid block 4243, and a second cuboid block 4242. The first fastener body 4241 has a plate-like structure. The first cuboid block 4243 and the second cuboid block 4242 are respectively connected to the first fastener body 4241. The first cuboid block 4243 is located below the second cuboid block 4242. The first cuboid block 4243 and the second cuboid block 4242 are respectively located near the filter cloth 4 on the first fastener body 4241. On one side, along the direction from the third side plate 53 to the fourth side plate 54, the length extension direction of the first fixture body 4241 is parallel to the length extension direction of the first cuboid block 4243. Along the direction from the support plate 5 to the filter assembly 4, the length extension direction of the second cuboid block 4242 is perpendicular to the length extension direction of the first cuboid block 4243. The inverted L-shaped structure of the first side plate 51 and the inverted L-shaped structure of the fourth side plate 54 respectively contact the first cuboid block 4243 and the second cuboid block 4242.

[0085] The fourth corner fastener 423 includes a second fastener body 4231, an L-shaped block 4232, and a third cuboid block 4233. The second fastener body 4231 has a plate-like structure. The L-shaped block 4232 and the third cuboid block 4233 are connected to the second fastener body 4231 respectively. The L-shaped block 4232 and the third cuboid block 4233 are located on the side of the second fastener body 4231 near the filter cloth 41. The top corner of the L-shaped block 4232 corresponds to one side of the U-shaped structure. The L-shaped block 4232 is located below the third cuboid block 4233. The inverted L-shaped structure of the second side plate 52 and the inverted L-shaped structure of the fourth side plate 54 are in contact with the L-shaped block 4232 and the third cuboid block 4233 respectively.

[0086] Specifically, the first corner retainer 421 is used to fix the first apex corner of the filter cloth 41 to the first side plate 51 and the third side plate 53, and can further fix one end of the first side plate 51 to one end of the third side plate 53; the second corner retainer 424 is used to fix the second apex corner of the filter cloth 41 to the first side plate 51 and the fourth side plate 54, and can further fix one end of the first side plate 51 to one end of the fourth side plate 54; the third corner retainer 422 is used to fix the third apex corner of the filter cloth 41 to the second side plate 52 and the third side plate 53, and can further fix one end of the second side plate 52 to one end of the third side plate 53; the fourth corner retainer 423 is used to fix the fourth apex corner of the filter cloth 41 to the second side plate 52 and the fourth side plate 54, and can further fix one end of the second side plate 52 to one end of the fourth side plate 54.

[0087] Continue to refer to Figure 11 and Figure 15 As shown, the first corner fastener 421 is an L-shaped bent rectangular block. The length of the first corner fastener 421 is equal to the sum of the shortest distance (X1) from the first π-shaped through hole 711 to the nearest end, the height of the isosceles trapezoidal hole 724, and the width of the rectangular hole 723. Along the direction from the vertical louver group 2S to the horizontal louver group 2H, the height of the first corner fastener 421 is equal to twice the length of the I-shaped part 73 of the first side plate 51. The width of the lower bottom surface of the first corner fastener 421 is equal to the sum of the width of the L-shaped part 72 of the first side plate 51 and the thickness of the first sound-absorbing cotton 61. The width of the upper bottom surface of the first corner fastener 421 is equal to the sum of the width of the L-shaped short part 722 of the first side plate 51 and the thickness of the first sound-absorbing cotton 61, minus the thickness of the I-shaped part 73 of the first side plate 51. The L-shaped bend of the first corner fastener 421 is used to fix and engage the first side plate 51. The first corner retainer 421 has a first Z-shaped groove 4211 extending along its length. The width of the first Z-shaped groove 4211 is the same as the thickness of the third side plate 53, and the first Z-shaped groove 4211 engages with the I-shaped portion 73 and the L-shaped portion 72 of the third side plate 53. The first Z-shaped groove 4211 is used to engage and fix one end of the third side plate 53. The first apex corner of the filter cloth 41 is inserted between the contact surfaces of the first corner retainer 421 and the first side plate 51 and the third side plate 53.

[0088] The third corner retainer 422 is symmetrical and similar to the first corner retainer 421, and the third corner retainer 422 and the first corner retainer 421 are a pair of linear counterparts. The third corner retainer 422 is also an L-shaped bent rectangular block, and the L-shaped bend of the third corner retainer 422 is used to fix and engage the second side plate 52. A second Z-shaped groove 4221 is provided at one end of the third corner retainer 422 along its length. The groove width of the second Z-shaped groove 4221 is the same as the thickness of the third side plate 53, and the second Z-shaped groove 4221 engages and connects with the I-shaped part 73 and the L-shaped part 72 of the third side plate 53. The second Z-shaped groove 4221 is used to engage and fix the end of the third side plate 53 away from the first Z-shaped groove 4211. The third apex corner of the filter cloth 41 is inserted between the contact surfaces of the third corner retainer 422 and the second side plate 52 and the third side plate 53.

[0089] Continue to refer to Figure 2 and Figures 11-17 As shown, the first fixture body 4241, the first cuboid block 4243, and the second cuboid block 4242 are integrally formed; the thickness of the first fixture body 4241 is equal to the thickness of the first sound-absorbing cotton 61, and the width of the first fixture body 4241 is equal to the sum of the shortest distance (X2) from the final π-shaped through hole 712 to the nearest end and the thickness of the third side plate 53; the upper surface of the first fixture body 4241 is in contact with the first sound-absorbing cotton 61. The projections of the first cuboid block 4243 and the second cuboid block 4242 from any side view direction are both L-shaped. The first cuboid block 4243 and the second cuboid block 4242 point from the vertical louver group 2S to the horizontal louver group 2H. The upper side of the second cuboid block 4242 is a rectangle. The side length of one side of the upper side of the second cuboid block 4242 is the same as the shortest distance (X2) from the final Ώ-shaped through hole 712 to the nearest end. The side length of the other side of the upper side of the second cuboid block 4242 is equal to the width of the L-shaped part 72 of the first side plate 51 minus the thickness of the I-shaped part 73. The lower side of the first cuboid block 4243 is a rectangle larger than the upper side of the second cuboid block 4242. The length of the lower side of the first cuboid block 4243 is equal to X2. The width of the lower side of the first cuboid block 4243 is equal to the width of the L-shaped part 72 of the first side plate 51 minus the thickness of the L-shaped part 72. The two L-shaped surfaces of the first cuboid block 4243 and the second cuboid block 4242, away from the first fixture body 4241, are in contact with one end of the first side plate 51 and one end of the fourth side plate 54, respectively. The third apex corner of the filter cloth 41 is inserted between the contact surfaces of the first cuboid block 4243 and the second cuboid block 4242 with the first side plate 51 and the fourth side plate 54.

[0090] The second fixture body 4231, L-shaped block 4232, and third cuboid block 4233 are integrally formed. The second fixture body 4231 has a plate-like structure, pointing from the vertical louver group 2S to the horizontal louver group 2H. The upper surface of the second fixture body 4231 is in contact with the second sound-absorbing cotton 62. The L-shaped block 4232 and the third cuboid block 4233 are respectively aligned and connected to the second fixture body 4231 on one side. The L-shaped block 4232 and the third cuboid block 4233 are located on the side of the second fixture body 4231 closer to the filter cloth 41. The apex corresponds to one side of the U-shaped structure; along the direction from the vertical louver group 2S to the horizontal louver group 2H, the L-shaped block 4232 is located below the third cuboid block 4233. The inverted L-shaped structure of the second side plate 52 and the inverted L-shaped structure of the fourth side plate 54 respectively contact the L-shaped block 4232 and the third cuboid block 4233; that is, the side of the L-shaped block 4232 and the third cuboid block 4233 away from the second fixture body 4231 respectively contact the end of the second side plate 52 away from the first L-shaped block 4242, and the end of the fourth side plate 54 away from the first L-shaped block 4242. The fourth apex of the filter cloth 41 is inserted between the contact surfaces of the L-shaped block 4232 and the third cuboid block 4233 with the second side plate 52 and the fourth side plate 54.

[0091] Through the above solution, nail-free connection can be achieved between the filter cloth 41 and the top corners of the first side plate 51, the second side plate 52, the third side plate 53, and the fourth side plate 54, so that the filter cloth 41 can be removed from it; furthermore, the first corner fastener 421, the second corner fastener 424, the third corner fastener 422, and the fourth corner fastener 423 are seamlessly connected to the top corners of the first side plate 51, the second side plate 52, the third side plate 53, and the fourth side plate 54, so that dust does not easily accumulate at the connection point, effectively keeping it clean and improving the appearance of the device.

[0092] In an alternative embodiment, continue to refer to Figure 2 , Figure 3 , Figure 4 , Figure 8 , Figure 10 and Figure 17 As shown. The edge fixing strip 43 includes a first strip group 431, a second strip group 432, a third strip group 433, and a fourth strip group 434;

[0093] The first strip group 431 includes a first left strip 4311 corresponding to the first side plate 51 near the third side plate 53 and a first right strip 4312 corresponding to the first side plate 51 near the fourth side plate 54. The length extension direction of the first left strip 4311 and the length extension direction of the first right strip 4312 are parallel to the length extension direction of the first side plate 51, respectively. The first left strip 4311 and the first right strip 4312 are respectively snapped to the head and tail sides of the I-shaped part 73 of the first side plate 51 in the direction from the third side plate 53 to the fourth side plate 54.

[0094] The second strip group 432 includes a second left strip 4321 corresponding to the side of the second side plate 52 near the third side plate 53 and a second right strip 4322 corresponding to the side of the second side plate 52 near the fourth side plate 54. The length extension direction of the second left strip 4321 and the length extension direction of the second right strip 4322 are parallel to the length extension direction of the second side plate 52, respectively. The second left strip 4321 and the second right strip 4322 are respectively snapped to the head and tail sides of the I-shaped part 73 of the second side plate 52 in the direction from the third side plate 53 to the fourth side plate 54.

[0095] The third strip group 433 includes a third upper strip 4331 corresponding to the third side plate 53 near the first side plate 51 and a third lower strip 4332 corresponding to the third side plate 53 near the second side plate 52. The length extension direction of the third upper strip 4331 and the length extension direction of the third lower strip 4332 are parallel to the length extension direction of the third side plate 53, respectively. The third upper strip 4331 and the third lower strip 4332 are respectively snapped to the head and tail sides of the I-shaped part 73 of the third side plate 53 in the direction from the first side plate 51 to the second side plate 52.

[0096] The fourth strip group 434 includes a fourth upper strip 4341 corresponding to the fourth side plate 54 near the first side plate 51 and a fourth lower strip 4342 corresponding to the fourth side plate 54 near the second side plate 52. The length extension direction of the fourth upper strip 4341 and the length extension direction of the fourth lower strip 4342 are parallel to the length extension direction of the fourth side plate 54, respectively. The fourth upper strip 4341 and the fourth lower strip 4342 are respectively snapped to the head and tail sides of the I-shaped part 73 of the fourth side plate 54 in the direction from the first side plate 51 to the second side plate 52.

[0097] The first left strip 4311, the first right strip 4312, the second left strip 4321, the second right strip 4322, the third top strip 4331, the third bottom strip 4332, the fourth top strip 4341, and the fourth bottom strip 4342 are all rectangular strips;

[0098] The side of the first left strip 4311 away from the first right strip 4312 and the side of the third upper strip 4331 away from the third lower strip 4332 respectively contact the L-shaped structure of the first corner fastener 421; the side of the first right strip 4312 away from the first left strip 4311 and the side of the fourth upper strip 4341 away from the fourth lower strip 4342 respectively contact the first fastener body 4241; the side of the second left strip 4321 away from the second right strip 4322 and the side of the third lower strip 4332 away from the third upper strip 4331 respectively contact the L-shaped structure of the third corner fastener 422; the side of the second right strip 4322 away from the second left strip 4321 and the side of the fourth lower strip 4342 away from the fourth upper strip 4341 respectively contact the second fastener body 4231.

[0099] Specifically, both the first left strip 4311 and the first right strip 4312 are made of metal; the length of the first left strip 4311 is not less than 35mm; the width of the first left strip 4311 is equal to the width of the L-shaped portion 72 of the first side plate 51 minus the thickness of the I-shaped portion 73, plus the thickness of the first sound-absorbing cotton 61; the height of the first left strip 4311 is equal to the height of the I-shaped portion 73 of the first side plate 51; the first left strip 4311 engages in the groove formed by the I-shaped portion 73 of the first side plate 51 and the wall, specifically engaging at the end of the first side plate 51 near the first corner retainer 421 and contacting the first corner retainer 421. The first right strip 4312 has the same structural size as the first left strip 4311, and engages in the groove formed by the I-shaped portion 73 of the first side plate 51 and the wall, specifically engaging at the end of the first side plate 51 near the second corner retainer 424 and contacting the second corner retainer 424.

[0100] The second strip 432 includes a second left strip 4321 near the third side plate 53 and a second right strip 4322 near the fourth side plate 54. Both the second left strip 4321 and the second right strip 4322 are made of metal. The length, width, and height of the second left strip 4321 and the second right strip 4322 are equal to the length, width, or height of the first left strip 4311. The second left strip 4321 engages in the groove formed between the I-shaped portion 73 of the second side plate 52 and the wall, specifically engaging at one end of the second side plate 52 near the third corner retainer 422 and contacting the L-shaped structure of the third corner retainer 422. The second right strip 4322 has the same structural size as the second left strip 4321. The second right strip 4322 engages in the groove formed between the I-shaped portion 73 of the second side plate 52 and the wall, specifically engaging at one end of the second side plate 52 near the fourth corner retainer 423 and contacting the body 4231 of the second retainer.

[0101] Both the third upper strip 4331 and the third lower strip 4332 are made of metal. The length of the third upper strip 4331 is not less than 35mm, and the width of the third upper strip 4331 is equal to the width of the L-shaped portion 72 of the third side plate 53 minus the thickness of the I-shaped portion 73. The height of the third upper strip 4331 is equal to the height of the I-shaped portion 73 of the third side plate 53. The third upper strip 4331 is engaged in the groove formed by the I-shaped portion 73 of the third side plate 53 and the wall, specifically engaged at the end of the third side plate 53 near the first corner retainer 421, and in contact with the L-shaped structure of the first corner retainer 421. The third lower strip 4332 has the same structural size as the third upper strip 4331. The third lower strip 4332 is engaged in the groove formed by the I-shaped portion 73 of the third side plate 53 and the wall, specifically engaged at the end of the third side plate 53 near the third corner retainer 422, and in contact with the L-shaped structure of the third corner retainer 422.

[0102] Both the fourth upper strip 4341 and the fourth lower strip 4342 are made of metal; the length, width, and height of the fourth upper strip 4341 and the fourth lower strip 4342 are equal to the length, width, or height of the third upper strip 4331; the fourth upper strip 4341 engages in the groove formed by the I-shaped portion 73 of the fourth side plate 54 and the wall, specifically engaging at the end of the fourth side plate 54 near the second corner retainer 424, and contacting the first retainer body 4241. The fourth lower strip 4342 has the same structural size as the fourth upper strip 4341, and the fourth lower strip 4342 engages in the groove formed by the I-shaped portion 73 of the fourth side plate 54 and the wall, specifically engaging at the end of the fourth side plate 54 near the fourth corner retainer 423, and contacting the second retainer body 4231.

[0103] In practical use, the first left strip 4311 is inserted into the groove formed by the I-shaped portion 73 of the first side plate 51 and the wall. Specifically, it is inserted from the end of the first side plate 51 near the fourth side plate 54 along the center line. Then, the first left strip 4311 is slid towards the side of the first side plate 51 near the third side plate 53, so that the first left strip 4311 is engaged with the side of the I-shaped portion 73 of the first side plate 51 near the third side plate 53 and contacts the first corner retainer 421. The first right strip 4312 is inserted into the groove formed by the I-shaped portion 73 of the first side plate 51 and the wall. Specifically, it is inserted from the end of the first side plate 51 near the third side plate 53 along the center line. Then, the first right strip 4312 is slid towards the side of the first side plate 51 near the fourth side plate 54, so that the first right strip 4312 is engaged with the side of the I-shaped portion 73 of the first side plate 51 near the fourth side plate 54 and contacts the second corner retainer 424.

[0104] A second left strip 4321 is inserted into the groove formed between the I-shaped portion 73 of the second side plate 52 and the wall. Specifically, it is inserted from the end of the second side plate 52 near the fourth side plate 54 along the center line. Then, the second left strip 4321 is slid towards the side of the second side plate 52 near the third side plate 53, so that the second left strip 4321 engages with the side of the I-shaped portion 73 of the second side plate 52 near the third side plate 53 and contacts the third corner retainer 422. A second right strip 4322 is inserted into the groove formed between the I-shaped portion 73 of the second side plate 52 and the wall. Specifically, it is inserted from the end of the second side plate 52 near the third side plate 53 along the center line. Then, the second right strip 4322 is slid towards the side of the second side plate 52 near the fourth side plate 54, so that the second right strip 4322 engages with the side of the I-shaped portion 73 of the second side plate 52 near the fourth side plate 54 and contacts the fourth corner retainer 423.

[0105] A third upper strip 4331 is inserted into the groove formed by the I-shaped portion 73 of the third side plate 53 and the wall. Specifically, it is inserted from the end of the third side plate 53 near the second side plate 52 along the center line. Then, the third upper strip 4331 is slid towards the side of the third side plate 53 near the first side plate 51, so that the third upper strip 4331 is engaged with the side of the I-shaped portion 73 of the third side plate 53 near the first side plate 51 and contacts the first corner retainer 421. A third lower strip 4332 is inserted into the groove formed by the I-shaped portion 73 of the third side plate 53 and the wall. Specifically, it is inserted from the end of the third side plate 53 near the first side plate 51 along the center line. Then, the third lower strip 4332 is slid towards the side of the third side plate 53 near the second side plate 52, so that the third lower strip 4332 is engaged with the side of the I-shaped portion 73 of the third side plate 53 near the second side plate 52 and contacts the third corner retainer 422.

[0106] A fourth upper strip 4341 is inserted into the groove formed between the I-shaped portion 73 of the fourth side plate 54 and the wall. Specifically, it is inserted from the end of the fourth side plate 54 near the second side plate 52 along the center line. Then, the fourth upper strip 4341 is slid towards the side of the fourth side plate 54 near the first side plate 51, so that the fourth upper strip 4341 is engaged with the side of the I-shaped portion 73 of the fourth side plate 54 near the first side plate 51 and contacts the second corner retainer 424. A fourth lower strip 4342 is inserted into the groove formed between the I-shaped portion 73 of the fourth side plate 54 and the wall. Specifically, it is inserted from the end of the fourth side plate 54 near the first side plate 51 along the center line. Then, the fourth lower strip 4342 is slid towards the side of the fourth side plate 54 near the second side plate 52, so that the fourth lower strip 4342 is engaged with the side of the I-shaped portion 73 of the fourth side plate 54 near the second side plate 52 and contacts the fourth corner retainer 423.

[0107] The above solution can further fix the four sides of the filter cloth 41, so that the four sides of the filter cloth 41 can be engaged with the first strip group 431 and the first side plate 51, the second strip group 432 and the second side plate 52, the third strip group and the third side plate 53, and the fourth strip group 434 and the fourth side plate 54 respectively, thereby realizing the detachable and concealed fixation of the filter cloth 41.

[0108] In an alternative embodiment, continue to refer to Figures 2-8 As shown, the first side plate 51, the second side plate 52, the third side plate 53 and the fourth side plate 54 are made of martensitic carbon steel; the first corner fastener 421, the second corner fastener 424, the third corner fastener 422, the fourth corner fastener 423, the first left strip 4311, the first right strip 4312, the second left strip 4321, the second right strip 4322, the third upper strip 4331, the third lower strip 4332, the fourth upper strip 4341 and the fourth lower strip 4342 are made of magnetic metal.

[0109] The above scheme enables magnetic insertion between the first side plate 51 and the first left strip 4311 and the first right strip 4312, the second side plate 52 and the second left strip 4321 and the second right strip 4322, the third side plate 53 and the third upper strip 4331 and the third lower strip 4332, and the fourth side plate 54 and the fourth upper strip 4341 and the fourth lower strip 4342, further enhancing the stability of the insertion between the first side plate 51 and the first left strip 4311 and the first right strip 4312, the second side plate 52 and the second left strip 4321 and the second right strip 4322, the third side plate 53 and the third upper strip 4331 and the third lower strip 4332, and the fourth side plate 54 and the fourth upper strip 4341 and the fourth lower strip 4342. The first corner retainer 421, the second corner retainer 424, the third corner retainer 422 and the fourth corner retainer 423 can be magnetically fastened to the first side plate 51, the second side plate 52, the third side plate 53 and the fourth side plate 54, thereby achieving further fastening stability.

[0110] In an alternative embodiment, continue to refer to Figures 2-6 As shown, the π-shaped through hole 71 also includes an arc-shaped groove communicating with the isosceles trapezoidal hole 724. The arc-shaped groove includes an upper arc-shaped groove 725 and a lower arc-shaped groove 726. Along the direction of the support plate 5 pointing towards the filter assembly 4, the orthographic projection of the upper arc-shaped groove 725 and the orthographic projection of the lower arc-shaped groove 726 completely overlap. The lower arc-shaped groove 726 is located on the side of the upper arc-shaped groove 725 closer to the filter cloth 41. The upper arc-shaped groove 725 and the lower arc-shaped groove 726 are semi-circular grooves. Both the upper arc-shaped groove 725 and the lower arc-shaped groove 726 are recessed towards the side of the filter cloth 41.

[0111] The first and last ends of the vertical louver 21S along the direction from the first side plate 51 to the second side plate 52 are respectively engaged with the upper arc grooves 725 of the first side plate 51 and the second side plate 52; the first and last ends of the horizontal louver 21H along the direction from the third side plate 53 to the fourth side plate 54 are respectively engaged with the lower arc grooves 726 of the third side plate 53 and the fourth side plate 54.

[0112] Specifically, the upper arc-shaped groove 725 and the lower arc-shaped groove 726 are semi-circular grooves of the same size, and the diameter of the upper arc-shaped groove 725 and the lower arc-shaped groove 726 is the same as the width of the rectangular hole 723; the upper arc-shaped groove 725 and the lower arc-shaped groove 726 are respectively provided on the side of the two isosceles trapezoidal holes 724 near the I-shaped part 73; the opening direction of the upper arc-shaped groove 725 and the lower arc-shaped groove 726 is perpendicular to the length extension direction of the isosceles trapezoidal hole 724, and the opening of the upper arc-shaped groove 725 and the lower arc-shaped groove 726 faces the side away from the I-shaped part 73; vertical louvers 21S or horizontal louvers 21H are respectively engaged in the upper arc-shaped groove 725 and the lower arc-shaped groove 726.

[0113] Along the direction from the first side plate 51 to the second side plate 52, the vertical louver 21S, at its head and tail ends, is respectively engaged in the upper arc-shaped groove 725 of the first side plate 51 and the upper arc-shaped groove 725 of the second side plate 52. The projections of the upper arc-shaped groove 725 of the first side plate 51 and the upper arc-shaped groove 725 of the second side plate 52 along the direction from the first side plate 51 to the second side plate 52 coincide with each other. Along the direction from the third side plate 53 to the fourth side plate 54, the transverse louver 21H, at its head and tail ends, is respectively engaged in the lower arc-shaped groove 726 of the third side plate 53 and the lower arc-shaped groove 726 of the fourth side plate 54. The projections of the lower arc-shaped groove 726 of the third side plate 53 and the lower arc-shaped groove 726 of the fourth side plate 54 along the direction from the third side plate 53 to the fourth side plate 54 coincide with each other.

[0114] The above solution enables the vertical louver 21S to be detachably connected to the first side plate 51 and the second side plate 52, and enables the horizontal louver 21H to be detachably connected to the third side plate 53 and the fourth side plate 54, thereby facilitating the cleaning of the vertical louver 21S and the horizontal louver 21H, and ensuring that they remain clean even after long-term use.

[0115] In an alternative embodiment, continue to refer to Figure 2 and Figure 6 As shown, the vertical louver 21S includes a vertical louver 24, an upper fixed shaft 25 and a lower fixed shaft 26. The vertical louver 24 is a rectangular plate structure. The upper fixed shaft 25 and the lower fixed shaft 26 are both cylinders. The upper fixed shaft 25 and the lower fixed shaft 26 are respectively connected to the head and tail ends of the vertical louver 24 along its length extension direction.

[0116] The transverse louver 21H includes a transverse louver 21, a left fixed shaft 22 and a right fixed shaft 23. The transverse louver 21 is a rectangular plate structure. The left fixed shaft 22 and the right fixed shaft 23 are both cylinders. The left fixed shaft 22 and the right fixed shaft 23 are respectively connected to the head and tail ends of the transverse louver 21 along its length extension direction.

[0117] Specifically, the horizontal louver 21 can be made of plastic or metal. The horizontal louver 21 is formed by connecting a rectangular piece and a rectangular sleeve at one end in the length extension direction, so that the horizontal louver 21 can extend and retract in the length extension direction, so that the horizontal louver 21 can be used to fit the distance between the first side plate 51 and the second side plate 52 in actual use; the left fixed shaft 22 and the right fixed shaft 23 are cylinders with the same structural size. The length of the left fixed shaft 22 and the right fixed shaft 23 is greater than the thickness of the first side plate 51 and the second side plate 52. The diameter of the left fixed shaft 22 and the right fixed shaft 23 is equal to the width of the rectangular hole 723. The left fixed shaft 22 and the right fixed shaft 23 can slide and fit into the upper arc groove 725 of the oppositely arranged first side plate 51 and second side plate 52 along the opening of the rectangular hole 723.

[0118] The vertical louver 24 and the horizontal louver 21 have the same structural size, and the upper fixed shaft 25 and the lower fixed shaft 26 have the same structural size as the left fixed shaft 22. The vertical louver 24 can extend and retract in the length extension direction, so that the vertical louver 24 can be adapted to the specific distance between the third side plate 53 and the fourth side plate 54 in actual use. The upper fixed shaft 25 and the lower fixed shaft 26 can slide and be inserted into the lower arc groove 726 of the oppositely arranged third side plate 53 and fourth side plate 54 along the opening of the rectangular hole 723.

[0119] Along the direction from the vertical louver group 2S to the horizontal louver group 2H, the installation of the horizontal louver 21H and the vertical louver 21S in the height extension direction can be interchanged. That is, the vertical louver 21S can be installed in the lower arc groove 726, and the horizontal louver 21H can be installed in the upper arc groove 725. This embodiment does not limit this.

[0120] The above scheme enables the engagement of the horizontal louver 21H and the vertical louver 21S; and facilitates the rotation of the two ends of the horizontal louver 21H and the vertical louver 21S in the lower arc groove 726 and the upper arc groove 725 respectively, making it convenient to adjust the angle of the horizontal louver 21H and the vertical louver 21S. Example 2

[0121] Continue to refer to Figures 2-7As shown, the housing 32 includes a bend upper shell 321, a bend lower shell 322, and a Z-shaped sliding plate 312. The bend upper shell 321 and the bend lower shell 322 are perpendicularly connected to the bend upper shell 321. The bend upper shell 321 and the bend lower shell 322 extend along the direction from the first side plate 51 to the second side plate 52. Both the bend upper shell 321 and the bend lower shell 322 are rectangular structures, and a hollow L-shaped structure is formed between the bend upper shell 321 and the bend lower shell 322.

[0122] The lower shell 322 of the turning point has a sliding plate through hole on the side facing the first side plate 51. The sliding plate through hole is connected to the hollow part of the hollow L-shaped structure. The Z-shaped sliding plate 312 is slidably connected to the lower shell 322 of the turning point through the sliding plate through hole. The Z-shaped sliding plate 312 extends and retracts in the lower shell 322 along the direction from the first side plate 51 to the second side plate 52.

[0123] Specifically, the upper shell 321 is perpendicularly connected to the lower shell 322 along its length extension direction on one side, and the upper shell 321 and the lower shell 322 are integrally formed. The upper shell 321 and the lower shell 322 are interconnected internally along their contact surfaces. The upper shell 321 and the lower shell 322 have the same length, both greater than half the length of the third side plate 53. The lower shell 322 is located on the side of the third side plate 53 away from the fourth side plate 54 along the length extension direction of the third side plate 53, specifically at the end of the third side plate 53 near the L-shaped short portion 722. The upper shell 321 is located on the side of the lower shell 322 near the upper arc groove 725 and at the end of the third side plate 53. The width of the lower shell 322 is equal to the sum of the shortest distance (X1) from the first Ώ-shaped through hole 711 to the nearest end and the length of the isosceles trapezoidal hole 724. The sum of the height of the lower shell 322 and the height of the upper shell 321 is equal to the height of the third side plate 53.

[0124] A third sound-absorbing cotton 63 is provided on the wide surface of the lower casing 322 near the upper arc groove 725 along its length extension direction. A display through hole 323 is provided on the wide surface of the lower casing 322 away from the upper arc groove 725. A slide plate through hole 311 is provided at one end of the lower casing 322 near the first side plate 51. The slide plate through hole 311 is rectangular in shape, and its length extension direction is the same as that of the lower casing 322. A Z-shaped slide plate 312 is provided inside the slide plate through hole 311. The width of the Z-shaped slide plate 312 is not greater than the width of the lower casing 322, and the length of the Z-shaped slide plate 312 is not greater than the length of the lower casing 322. One end of the Z-shaped slide plate 312 can slide into the slide plate through hole 311 and extend and retract within the slide plate through hole 311.

[0125] Through the above solution, the length of the housing 32 can be adapted to the width between the first side plate 51 and the second side plate 52, and the width between the third side plate 53 and the third sound-absorbing cotton 63, thereby closing the gap between the first side plate 51, the second side plate 52 and the third side plate 53, so that the concealed air vent device provided in this embodiment is smooth and complete on the wall surface, avoiding dust accumulation.

[0126] The various technical features of this utility model 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 utility model does not fall under the category of "simple superposition" in Chapter 4 of Part II of the Patent Examination Guidelines.

Claims

1. A concealed air vent device, characterized in that, Includes a support frame, louver assembly, monitoring assembly, and filter assembly, among which, The support includes a support plate and sound-absorbing cotton. The support plate includes a first side plate, a third side plate, a second side plate, and a fourth side plate connected in sequence and forming a U-shape. At least two Π-shaped through holes are respectively opened on the first side plate, the second side plate, the third side plate, and the fourth side plate. The sound-absorbing cotton includes a first sound-absorbing cotton, a second sound-absorbing cotton, a third sound-absorbing cotton, and a fourth sound-absorbing cotton. The first sound-absorbing cotton is attached to the side of the first side plate away from the second side plate. The second sound-absorbing cotton is attached to the side of the second side plate away from the first side plate. The third sound-absorbing cotton is located on the side of the third side plate away from the fourth side plate. The fourth sound-absorbing cotton is attached to the side of the fourth side plate away from the third side plate. The louver assembly includes a vertical louver group and a horizontal louver group. The vertical louver group is located above the horizontal louver group. The vertical louver group includes at least two vertical louver blades, and the head and tail ends of the vertical louver blades are respectively engaged with the ∏-shaped through holes in the first side plate and the second side plate in the direction from the third side plate to the fourth side plate. The horizontal louver group includes at least two horizontal louver blades, and the head and tail ends of the horizontal louver blades are respectively inserted into the ∏-shaped through holes in the third side plate and the fourth side plate in the direction from the third side plate to the fourth side plate. The monitoring component includes a housing, a display, a microprocessor, and a sensor. The housing is located between the third side plate and the third sound-absorbing cotton. The housing has a hollow L-shaped structure. The display is located on the outer bottom surface of the hollow L-shaped structure. The sensor and the microprocessor are located inside the hollow L-shaped structure. The sensor and the microprocessor are electrically connected. The filter assembly is located below the support plate. The apex angles between the first side plate and the third side plate, the first side plate and the fourth side plate, the second side plate and the third side plate, and the second side plate and the fourth side plate are respectively connected to the respective apex angles of the filter assembly.

2. The concealed air vent device according to claim 1, characterized in that, The sensor includes a temperature measuring device, a humidity measuring device, an anemometer, and a transducer, and the temperature measuring device, the humidity measuring device, the anemometer, and the transducer are electrically connected to the microprocessor.

3. The concealed air vent device according to claim 1, characterized in that, It also includes a filter assembly, which includes a filter cloth, corner retainers, and edge fixing strips. The filter cloth is a rectangular structure with filter holes. The corner retainers and the edge fixing strips form an L-shaped or T-shaped structure. Each apex of the filter cloth is fixed by the corner retainers and the edge fixing strips to the apex between the first side plate and the third side plate, the apex between the third side plate and the second side plate, the apex between the second side plate and the fourth side plate, and the apex between the fourth side plate and the first side plate, respectively. Along the direction from the vertical louver group to the horizontal louver group, the orthographic projection of the filter cloth and the orthographic projection of the display do not overlap at all.

4. The concealed air vent device according to claim 3, characterized in that, The first side plate, the second side plate, the third side plate and the fourth side plate each include an L-shaped part and an I-shaped part connected to the L-shaped part. The right angle of the L-shaped part corresponds to one side of the square structure. Part of the L-shaped part and the I-shaped part form an inverted L-shaped structure. The right angle of the inverted L-shaped structure is away from the side of the square structure. The L-shaped portion and the I-shaped portion are respectively provided with the π-shaped through hole. The π-shaped through hole includes a rectangular hole and two isosceles trapezoidal holes connected to the rectangular hole. The rectangular hole and the two isosceles trapezoidal holes form the π-shaped through hole. The rectangular hole penetrates the side of the L-shaped portion near the I-shaped portion and the I-shaped portion along the direction of the support plate towards the filter assembly.

5. The concealed air vent device according to claim 4, characterized in that, The corner fixer includes a first corner fixer, a second corner fixer, a third corner fixer, and a fourth corner fixer; The first corner retainer and the third corner retainer are both mirror-symmetrical L-shaped structures. The L-shaped structure of the first corner retainer is in contact with the inverted L-shaped structure of the first side plate. The first corner retainer has a first Z-shaped groove corresponding to the third side plate on the side of the first side plate closest to the third side plate. The L-shaped structure of the third corner retainer contacts the inverted L-shaped structure of the second side plate; the third corner retainer has a second Z-shaped groove corresponding to the third side plate on the side of the second side plate close to the third side plate, and the two ends of the third side plate along the direction from the first side plate to the second side plate are respectively engaged with the first Z-shaped groove and the second Z-shaped groove; The second corner fixer includes a first fixer body, a first cuboid block, and a second cuboid block. The first fixer body is a plate-like structure. The first cuboid block and the second cuboid block are respectively connected to the first fixer body. The first cuboid block is located below the second cuboid block. The first cuboid block and the second cuboid block are respectively located on the side of the first fixer body near the filter cloth, in the direction from the third side plate to the fourth side plate. The length extension direction of the first fixer body is parallel to the length extension direction of the first cuboid block, in the direction from the support plate to the filter assembly. The length extension direction of the second cuboid block is perpendicular to the length extension direction of the first cuboid block. The inverted L-shaped structure of the first side plate and the inverted L-shaped structure of the fourth side plate respectively contact the first cuboid block and the second cuboid block. The fourth corner fastener includes a second fastener body, an L-shaped block, and a third cuboid block. The second fastener body is a plate-like structure. The L-shaped block and the third cuboid block are respectively connected to the second fastener body. The L-shaped block and the third cuboid block are located on the side of the second fastener body closer to the filter cloth. The apex corner of the L-shaped block corresponds to one side of the U-shaped structure. The L-shaped block is located below the third cuboid block. The inverted L-shaped structure of the second side plate and the inverted L-shaped structure of the fourth side plate respectively contact the L-shaped block and the third cuboid block.

6. The concealed air vent device according to claim 5, characterized in that, The edge fixing strips include a first group, a second group, a third group, and a fourth group; The first strip group includes a first left strip corresponding to the first side plate and close to the third side plate, and a first right strip corresponding to the first side plate and close to the fourth side plate. The length extension direction of the first left strip and the length extension direction of the first right strip are parallel to the length extension direction of the first side plate, respectively. The first left strip and the first right strip are respectively snapped to the head and tail sides of the I-shaped part of the first side plate in the direction from the third side plate to the fourth side plate. The second strip group includes a second left strip corresponding to the side of the second side plate near the third side plate and a second right strip corresponding to the side of the second side plate near the fourth side plate. The length extension direction of the second left strip and the length extension direction of the second right strip are parallel to the length extension direction of the second side plate, respectively. The second left strip and the second right strip are respectively snapped to the head and tail sides of the I-shaped part of the second side plate in the direction from the third side plate to the fourth side plate. The third strip group includes a third upper strip corresponding to the third side plate near the first side plate and a third lower strip corresponding to the third side plate near the second side plate. The length extension direction of the third upper strip and the length extension direction of the third lower strip are parallel to the length extension direction of the third side plate, respectively. The third upper strip and the third lower strip are respectively snapped to the head and tail sides of the I-shaped part of the third side plate in the direction from the first side plate to the second side plate. The fourth strip group includes a fourth upper strip corresponding to the fourth side plate near the first side plate and a fourth lower strip corresponding to the fourth side plate near the second side plate. The length extension direction of the fourth upper strip and the length extension direction of the fourth lower strip are parallel to the length extension direction of the fourth side plate, respectively. The fourth upper strip and the fourth lower strip are respectively snapped to the head and tail sides of the I-shaped part of the fourth side plate in the direction from the first side plate to the second side plate. The first left strip, the first right strip, the second left strip, the second right strip, the third top strip, the third bottom strip, the fourth top strip, and the fourth bottom strip are all rectangular strips; The first left strip away from the first right strip and the third upper strip away from the third lower strip respectively contact the L-shaped structure of the first corner fixator; the first right strip away from the first left strip and the fourth upper strip away from the fourth lower strip respectively contact the body of the first fixator; the second left strip away from the second right strip and the third lower strip away from the third upper strip respectively contact the L-shaped structure of the third corner fixator; the second right strip away from the second left strip and the fourth lower strip away from the fourth upper strip respectively contact the body of the second fixator.

7. The concealed air vent device according to claim 6, characterized in that, The first side plate, the second side plate, the third side plate, and the fourth side plate are made of martensitic carbon steel; the first corner fastener, the second corner fastener, the third corner fastener, the fourth corner fastener, the first left strip, the first right strip, the second left strip, the second right strip, the third upper strip, the third lower strip, the fourth upper strip, and the fourth lower strip are made of magnetic metal.

8. The concealed air vent device according to claim 4, characterized in that, The Ώ-shaped through hole also includes an arc-shaped groove communicating with the isosceles trapezoidal hole. The arc-shaped groove includes an upper arc-shaped groove and a lower arc-shaped groove. Along the direction of the support plate pointing to the filter assembly, the orthographic projection of the upper arc-shaped groove and the orthographic projection of the lower arc-shaped groove completely overlap. The lower arc-shaped groove is located on the side of the upper arc-shaped groove closer to the filter cloth. The upper arc-shaped groove and the lower arc-shaped groove are both semi-circular grooves. Both the upper arc-shaped groove and the lower arc-shaped groove are recessed towards the side of the filter cloth. The vertical louver blades, along the direction from the third side plate to the fourth side plate, have their head and tail ends respectively engaged with the upper arc-shaped grooves of the first side plate and the second side plate; the horizontal louver blades, along the direction from the third side plate to the fourth side plate, have their head and tail ends respectively engaged with the lower arc-shaped grooves of the third side plate and the fourth side plate.

9. The concealed air vent device according to claim 8, characterized in that, The vertical louver includes a vertical louver, an upper fixed shaft, and a lower fixed shaft. The vertical louver is a rectangular plate structure. The upper fixed shaft and the lower fixed shaft are both cylinders. The upper fixed shaft and the lower fixed shaft are respectively connected to the head and tail ends of the vertical louver along its length extension direction. The horizontal louver includes a horizontal louver blade, a left fixed shaft, and a right fixed shaft. The horizontal louver blade is a rectangular plate structure. The left fixed shaft and the right fixed shaft are both cylinders. The left fixed shaft and the right fixed shaft are respectively connected to the head and tail ends of the horizontal louver blade along its length extension direction.

10. The concealed air vent device according to claim 1, characterized in that, The housing includes a hinged upper shell, a hinged lower shell, and a Z-shaped sliding plate. The hinged upper shell and the hinged lower shell are perpendicularly connected to the hinged upper shell. The hinged upper shell and the hinged lower shell extend along the direction from the first side plate to the second side plate. The hinged upper shell and the hinged lower shell are both rectangular structures. The hinged upper shell and the hinged lower shell form the hollow L-shaped structure. The lower shell of the folding structure has a sliding plate through hole on the side facing the first side plate. The sliding plate through hole is connected to the hollow part of the hollow L-shaped structure. The Z-shaped sliding plate is slidably connected to the lower shell of the folding structure through the sliding plate through hole. The Z-shaped sliding plate extends and retracts within the lower shell of the folding structure along the direction from the first side plate to the second side plate.

Images