Hidden type shutter air inlet assembly
By optimizing the structure and integrating the functions of the concealed louvered air intake component, the problems of insect and dust prevention as well as ease of installation and maintenance are solved, improving ventilation quality and aesthetics, making it suitable for high-end environments.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CONSERVATION SMART ENERGY CO LTD
- Filing Date
- 2025-05-14
- Publication Date
- 2026-04-24
AI Technical Summary
Existing louvered air inlet devices are inadequate in terms of insect and dust prevention, ease of installation and maintenance, and aesthetic integration, making it difficult to meet the needs of high-standard ventilation environments.
It adopts a concealed structural design, including a first air intake component, a second air intake component, a third air intake component, louvers, an insect screen, and dustproof cotton. Through detachable connection and optimized combination, it integrates efficient insect and dust prevention functions, and has built-in insect screen and dustproof cotton to achieve internal installation.
It improves ventilation quality and equipment lifespan, reduces energy consumption, simplifies installation and maintenance processes, enhances aesthetics and space utilization efficiency, and is suitable for high-end environments.
Smart Images

Figure CN224162719U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of ventilation equipment technology, and in particular to a concealed louvered air inlet assembly. Background Technology
[0002] Louvered air inlets, as common ventilation components, are widely used in the ventilation systems of buildings and various equipment. Their basic structure typically includes a louvered frame and louvered blades with adjustable opening angles to regulate airflow. However, existing ordinary louvered air inlets have many technical limitations in dealing with external environmental factors such as mosquitoes and dust, making it difficult to meet the actual needs of high-standard ventilation environments.
[0003] While some louvered air intake products on the market currently possess certain insect-proof or dust-proof functions, this is often achieved by adding simple insect nets or a single-layer filter to the outside of the louvers. However, these protective structures generally have technical defects: First, insect nets often use plastic or metal mesh with large pores, which can only intercept larger insects. Small insects can still penetrate and enter the ventilation system, not only polluting the air but also potentially breeding inside the equipment, affecting its normal operation and even causing component damage. Second, simple single-layer filters or ordinary cotton felt have low filtration efficiency for fine dust and are prone to clogging during long-term use, leading to reduced ventilation efficiency. Dust accumulates in the ventilation ducts and inside the equipment, affecting equipment performance, increasing operating energy consumption, and shortening the equipment's lifespan.
[0004] Furthermore, to enhance protective performance, some existing products employ complex multi-layered filter combinations. While this improves dustproofing to some extent, it also results in bulky structures, cumbersome installation procedures, and inconvenient disassembly and assembly during maintenance, increasing usage costs and maintenance difficulty. In terms of installation methods, most current multi-blade air intake components are externally mounted, directly attached to the outer surface of buildings or equipment. This protruding structure lacks consistency with the style of the building or equipment casing, severely impacting overall aesthetic harmony. Especially in high-end office buildings, modern exhibition halls, and other locations with high visual requirements, such devices often become visual flaws affecting aesthetics and reducing the overall quality of the space.
[0005] In summary, existing louvered air intake devices have varying degrees of shortcomings in terms of insect and dust prevention, ease of installation and maintenance, and aesthetic integration. There is a need to propose an air intake device with optimized structure, complete functions, and high environmental compatibility to overcome the deficiencies of existing technologies. Summary of the Invention
[0006] Based on the above problems, this utility model proposes a concealed louvered air inlet assembly.
[0007] This utility model is achieved through the following technical solution:
[0008] A concealed louvered air intake assembly includes a first air intake assembly, a second air intake assembly, a third air intake assembly, louver blades, an insect screen, and dustproof cotton. The second air intake assembly is a semi-enclosed cavity structure with ventilation holes on its bottom surface. The second air intake assembly is connected to the first and third air intake assemblies through through holes. The third air intake assembly is also a semi-enclosed cavity structure with ventilation holes at its bottom and is connected to the first air intake assembly through pins. The louver blades are fixed to the second air intake assembly and connected to the first air intake assembly through screws. The insect screen is located at the bottom of the second air intake assembly, and the dustproof cotton is installed inside the bent portion of the third air intake assembly.
[0009] Furthermore, it also includes a sealing strip and a waterproof strip, wherein the sealing strip is disposed at the connection between the first air inlet assembly and the third air inlet assembly, and the waterproof strip is disposed on the outer edge of the second air inlet assembly.
[0010] Furthermore, the insect-proof net is installed at the bottom ventilation hole of the second air inlet component and fixed by a limiting structure; the dustproof cotton is installed at the bottom ventilation hole of the third air inlet component and limited by a bending part.
[0011] Furthermore, the bent edge of the second air inlet assembly is provided with through holes and waist holes for fixed connection with the external air inlet surface by screws.
[0012] Furthermore, the louver blades are Z-shaped sheet metal parts with multiple blades, wherein the first louver blade is connected to the first air inlet assembly and the second air inlet assembly by screws, and the remaining louver blades are fixed to the second air inlet assembly by welding.
[0013] Furthermore, the first air intake component is an L-shaped sheet metal part, with its short side connected to the second air intake component through a through hole, and its long side connected to the third air intake component through a through hole.
[0014] Furthermore, the third air intake component has through holes and irregular holes on its bent edge, which are connected to the long side of the first air intake component by a pin and limit the dustproof cotton.
[0015] Furthermore, the insect-proof net is a 20-mesh wire mesh, the size of which is adapted to the bottom ventilation hole of the second air inlet component, and is fixed by a limiting structure.
[0016] Beneficial effects of the utility model:
[0017] (1) The concealed louvered air intake component proposed in this utility model achieves efficient insect and dust prevention while taking into account ventilation performance by optimizing the overall structure. Under the same air intake conditions, the ventilation resistance increases only slightly. On the basis of ensuring ventilation quality, there is no need to significantly increase the power of ventilation equipment, effectively reducing energy consumption, creating a comfortable and healthy indoor environment for users, and bringing considerable economic and social benefits.
[0018] (2) The concealed louvered air inlet assembly proposed in this utility model adopts a detachable connection design for each component, abandoning the traditional complex installation method, greatly simplifying the installation process and significantly improving construction efficiency. During maintenance, cleaning the insect screen and replacing the dustproof cotton are simple operations, greatly improving the convenience of maintenance;
[0019] (3) The concealed louvered air inlet component proposed in this utility model has a built-in dustproof cotton made of special fiber material through advanced technology, with a complex and dense internal fiber structure. When airflow passes through, it can efficiently capture and adsorb dust particles, strongly filter fine dust in the air, significantly reduce the erosion and wear of dust on ventilation equipment, and greatly extend the service life of the equipment;
[0020] (4) The present invention proposes a hidden louvered air intake component with a tight and reasonable mesh layout, which physically blocks mosquitoes, flies and various small flying insects in all directions, greatly reducing the chance of mosquitoes entering the ventilation system, effectively eliminating the hidden danger of equipment failure caused by mosquito breeding, and creating a clean and hygienic operating environment for the ventilation system.
[0021] This solution employs a concealed internal installation structure, overcoming the shortcomings of existing external louvered air intake components, and exhibits significant technological advancements and application advantages. Firstly, in terms of installation, the internal installation design avoids the problems of wind and rain erosion and sun aging caused by long-term exposure of components to the external environment, significantly improving the device's weather resistance and service life. It also reduces frequent replacements and repairs due to component aging and deformation, effectively lowering maintenance costs and labor input. Secondly, this structure fully utilizes the idle space resources within buildings or equipment, eliminating the need for additional external space. This results in a more compact and rational overall layout, making it particularly suitable for space-constrained environments or applications with high aesthetic requirements, such as modern office buildings, exhibition halls, and precision manufacturing workshops. It effectively enhances the cleanliness and aesthetics of the environment, strengthening visual harmony.
[0022] Furthermore, this invention optimizes the structure by integrating a high-precision insect-proof net and a high-efficiency dustproof cotton, effectively blocking various insects and tiny dust particles. This overcomes the shortcomings of traditional products in terms of protective effect and significantly improves the cleanliness and operational stability of the ventilation system. Simultaneously, the air intake component is designed with ease of installation and maintenance in mind, featuring a simple structure and convenient assembly / disassembly, further reducing maintenance difficulty and economic costs during use.
[0023] In summary, this utility model is not only innovative and practical in terms of structure and function, but also has good comprehensive performance in terms of aesthetics, economy and adaptability. It is suitable for a variety of ventilation application scenarios and has broad promotion value and market application prospects. Attached Figure Description
[0024] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0025] Figure 1 This is a schematic diagram of the overall structure of a concealed louvered air inlet assembly proposed in this utility model;
[0026] Figure 2 An exploded view of the overall structure of a concealed louvered air inlet assembly proposed in this utility model;
[0027] In the diagram, 101-waterproof rubber strip, 102-louver blade, 103-20 mesh wire mesh, 104-first air intake assembly, 105-second air intake assembly, 106-sealing rubber strip, 107-dustproof cotton, and 108-third air intake assembly. Detailed Implementation
[0028] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the embodiments and accompanying drawings. The illustrative embodiments and descriptions of this utility model are only used to explain this utility model and are not intended to limit this utility model.
[0029] Example 1
[0030] This embodiment proposes a specific implementation method for a concealed louvered air intake assembly.
[0031] refer to Figures 1-2 A concealed louvered air intake assembly includes a first air intake assembly 104, a second air intake assembly 105, a third air intake assembly 108, louver blades 102, a sealing strip 106, a waterproof strip 101, a 20-mesh wire mesh 103, and dustproof cotton 107.
[0032] The first air intake component 104 has an L-shaped structure and is formed by bending sheet metal. The short side of the L-shaped sheet metal part has two through holes for fixed connection with other components, and the long side has four through holes for connection and fixation with other components. To avoid sharp edges affecting operators or subsequent installation, its sharp corners are rounded to improve safety and practicality.
[0033] The second air intake assembly 105 is a semi-enclosed cavity structure, made from a single piece of sheet metal through cutting and multi-sided bending. The sheet metal has a rectangular opening in the central area as a ventilation channel; the four sides of the assembly are bent into shape, with three sides first bent upwards at 90° and then turned outwards at 90°, and the other side first bent upwards at 115° and then turned outwards at 115°, so that the final height of the four edges is consistent, ensuring structural stability. The turned-out area has through holes for fixed connection with other components by means of screwing or riveting.
[0034] The third air intake component 108 is a semi-enclosed cavity structure, also formed by sheet metal processing. After pre-cutting, four rectangular through holes of the same size are set in its central area to enhance ventilation efficiency. The four sides of the component are first bent upwards at 90°, and then bent upwards again at 90° to form reinforcing edges. Several through holes are opened at the second bend position to achieve mating connection and firm fixation with other components.
[0035] The louver blade 102 is a Z-shaped structural component, formed by bending sheet metal. Both sides are bent at 120° in opposite directions, creating a typical Z-shaped cross-section structure with excellent airflow guidance and shielding functions. Two through holes are provided on one of the bent edges for easy connection to the support structure or air intake assembly.
[0036] After all the components are installed, they are sealed with sealing strip 106 and waterproof strip 101 to improve the overall airtightness and waterproof performance of the components. At the same time, a 20-mesh wire mesh 103 is installed at the air inlet to block insects and larger particles; dustproof cotton 107 is then installed to further filter dust and impurities in the air, thereby ensuring that the air entering the system is clean and safe.
[0037] Example 2
[0038] This embodiment proposes a specific design method for a concealed louvered air inlet assembly based on Embodiment 1.
[0039] The second air intake assembly 105 is a semi-enclosed cavity, 380mm long, 290mm wide, and 30mm high, formed by bending a 1.5mm thick aluminum-zinc coated sheet metal part. Four 9mm diameter through holes and four 9×15mm oblong holes are provided on the bent edge for fixing to the air intake surface. Rectangular holes cut into the bottom surface are for ventilation, and four 4.5mm diameter through holes are also provided for fixing the louver blades 102 and the insect screen.
[0040] The louver blade 102 is a Z-shaped sheet metal part with a length of 339.5mm, a width of 38mm, and a height of 25.5mm, formed by bending a 1.5mm thick aluminum-zinc coated sheet. A 7mm diameter through hole is provided on one of the bent edges for...
[0041] The first air intake component 104 is an L-shaped bent piece with a length of 340mm, a width of 15mm, and a height of 18mm, formed by bending a 1.5mm thick aluminum-zinc coated sheet metal. It has two through holes with a diameter of 6mm on the short bent side for connecting with the second air intake component 105, and four through holes with a diameter of 4.5mm on the long bent side for connecting with the third air intake component 108.
[0042] The third air intake component 108 is a semi-enclosed cavity with a length of 340mm, a width of 188mm, and a height of 15mm, formed by bending a 1.5mm thick aluminum-zinc coated sheet metal. It has a 5mm diameter through hole and two irregular through holes on the bent edge along the length direction for connecting with the first air intake component 104. Four rectangular holes of the same size are cut at the bottom for ventilation and limiting the dustproof cotton 107.
[0043] After cutting the insect net to the appropriate size, place it in the bottom position of the second air intake component 105. Then, place the louver blades 102 in the appropriate direction. The first louver blade 102 is connected to the first air intake component 104 and the second air intake component 105 by screws and nuts. The remaining louver blades 102 are connected to the second air intake component 105 by welding. The first air intake component 104 and the third air intake component 108 are connected by pins to ensure that the third air intake component 108 can open and close normally. Place the dustproof cotton 107 into the two bends of the third air intake component 108, and then fix the first air intake component 104 and the third air intake component 108 with pins.
[0044] After assembly, the air intake component is securely installed using pre-installed studs within the equipment or building structure, allowing it to be concealed within the internal framework. During the initial installation phase, precisely fitted ventilation holes are drilled into the equipment or building walls according to the component's specifications and ventilation requirements. The hole size and location are meticulously calculated using aerodynamics and spatial planning to ensure optimal ventilation performance. This design ensures both the integrity and aesthetics of the equipment or building's appearance, avoiding any jarring effect from externally mounted components, while also efficiently utilizing internal space and maximizing space conservation.
[0045] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.
Claims
1. A concealed louvered air inlet assembly, characterized in that, The device includes a first air inlet assembly, a second air inlet assembly, a third air inlet assembly, louvers, an insect screen, and dustproof cotton. The second air inlet assembly is a semi-enclosed cavity structure with ventilation holes on its bottom surface. The second air inlet assembly is connected to the first and third air inlet assemblies through through holes. The third air inlet assembly is also a semi-enclosed cavity structure with ventilation holes at its bottom and is connected to the first air inlet assembly through pins. The louvers are fixed to the second air inlet assembly and connected to the first air inlet assembly through screws. The insect screen is located at the bottom of the second air inlet assembly, and the dustproof cotton is installed inside the bent section of the third air inlet assembly.
2. The concealed louvered air inlet assembly according to claim 1, characterized in that, It also includes a sealing strip and a waterproof strip, wherein the sealing strip is disposed at the connection between the first air inlet assembly and the third air inlet assembly, and the waterproof strip is disposed at the outer edge of the second air inlet assembly.
3. A concealed louvered air inlet assembly according to claim 1, characterized in that, The insect-proof net is installed at the bottom ventilation hole of the second air inlet component and is fixed by a limiting structure; the dustproof cotton is installed at the bottom ventilation hole of the third air inlet component and is limited by a bending part.
4. A concealed louvered air inlet assembly according to claim 1, characterized in that, The second air inlet assembly has through holes and waist holes on its bent edge for fixed connection with the external air inlet surface by screws.
5. A concealed louvered air inlet assembly according to claim 1, characterized in that, The louver blades are Z-shaped sheet metal parts and there are multiple blades. The first louver blade is connected to the first air inlet assembly and the second air inlet assembly by screws, and the remaining louver blades are fixed to the second air inlet assembly by welding.
6. A concealed louvered air inlet assembly according to claim 1, characterized in that, The first air intake component is an L-shaped sheet metal part, with its short side connected to the second air intake component through a through hole, and its long side connected to the third air intake component through a through hole.
7. A concealed louvered air inlet assembly according to claim 1, characterized in that, The third air intake component has through holes and irregular holes on its bent edge, and is connected to the long side of the first air intake component by a pin, which also limits the dustproof cotton.
8. A concealed louvered air inlet assembly according to claim 1, characterized in that, The insect-proof net is a 20-mesh wire mesh, the size of which is adapted to the bottom ventilation hole of the second air inlet component, and is fixed by a limiting structure.