A sound absorption and diffusion complex

Abstract

This utility model discloses a sound absorption and diffusion complex, characterized by comprising an installation frame, a sound-absorbing soft pad, and a polyester sound-absorbing diffuser. The soft pad and the polyester sound-absorbing diffuser are respectively disposed within the installation frame. The areas of the soft pad and the polyester sound-absorbing diffuser can be adjusted according to functional requirements. Increasing the area of ​​the soft pad increases the sound absorption coefficient of the product, while increasing the area of ​​the polyester sound-absorbing diffuser decreases the sound absorption coefficient, thereby increasing the sound diffusion function. This utility model is lightweight, easy and quick to install, and simple to manufacture, process, maintain, and replace, making it suitable for architectural acoustics engineering and noise control engineering.

Description

Technical Field

[0001] This utility model relates to the field of building sound-absorbing materials technology, and more specifically to a sound-absorbing and diffusing complex. Background Technology

[0002] In architectural acoustics and noise control engineering, sound absorption is a key technology for reducing reverberation time and lowering environmental noise levels. Currently, sound-absorbing materials and structures on the market are characterized by their singular function; diffusers and sound-absorbing panels are mostly independent products. While traditional diffusers can change the direction of sound wave propagation, their sound absorption performance is weak; sound-absorbing panels, while absorbing sound waves, lack the ability to regulate sound diffusion. When used together, they must be installed separately, increasing construction complexity and making it difficult to achieve precise acoustic performance matching. Furthermore, existing diffusers are mostly made of solid wood or high-density wood panels, which have three significant drawbacks: first, they are heavy, requiring a high-load-bearing base layer; second, wood is susceptible to deformation and cracking due to temperature and humidity fluctuations, leading to unstable diffusion performance; and third, they have long processing cycles and consume large amounts of wood resources, which is inconsistent with green and environmentally friendly trends. For example, Chinese patent CN118461777A discloses a full-range sound-absorbing soft-pack system, comprising: a surface fabric, sound-absorbing cotton, a metal mesh, and an aluminum alloy square tube frame; the surface fabric covers the outer side of the aluminum alloy square tube frame, the sound-absorbing cotton fills the inside of the aluminum alloy square tube frame, and the metal mesh is fixed to the inner side of the aluminum alloy square tube frame. The surface fabric, sound-absorbing cotton, metal mesh, and aluminum alloy square tube frame together form an independent sound-absorbing soft-pack unit; wherein, the independent sound-absorbing soft-pack unit is connected to the building wall through a metal keel structure, and the independent sound-absorbing soft-pack unit, the metal keel structure, and the cavity formed between the independent sound-absorbing soft-pack unit and the building wall together constitute the full-range sound-absorbing soft-pack system. The core structure of this patent is an aluminum alloy frame filled with sound-absorbing cotton. Although it has the advantages of factory prefabrication and convenient installation, its acoustic function is limited to sound absorption and cannot achieve sound diffusion and distribution. In venues with high acoustic requirements (such as concert halls), simple sound absorption treatment can result in a dry sound and a lack of spatial sense. Therefore, there is an urgent need for an integrated structure that can take into account both sound absorption and diffusion functions. Summary of the Invention

[0003] The purpose of this invention is to provide a stable, reliable, and easy-to-manufacture sound-absorbing and diffusion complex that combines sound absorption and diffusion functions, in order to overcome the shortcomings of existing technologies.

[0004] This utility model achieves the above-mentioned objectives using the following technical solution: a sound absorption and diffusion complex, characterized in that it includes an installation frame, a sound-absorbing soft package, and a polyester sound-absorbing diffuser. The sound-absorbing soft package and the polyester sound-absorbing diffuser form a planar splicing structure within the installation frame. The areas of the sound-absorbing soft package and the polyester sound-absorbing diffuser can be adjusted according to functional requirements. Increasing the area of ​​the sound-absorbing soft package will increase the sound absorption coefficient of the product, while increasing the area of ​​the polyester sound-absorbing diffuser will decrease the sound absorption coefficient and increase the sound diffusion function.

[0005] As a further explanation of the above solution, the mounting frame includes several frame components and connecting pieces. The connecting pieces are connected between two adjacent frame components, and the connecting pieces are equipped with connecting piece screws to connect and fix them to the frame components. This connection structure can control the flatness error of the assembled frame within ±1mm / m, ensuring the flat installation of the sound-absorbing soft package and the polyester sound-absorbing diffuser.

[0006] Preferably, the mounting frame is a rectangular aluminum profile frame, consisting of a front frame panel, a rear frame panel, a left frame panel, and a right frame panel, which has advantages such as high strength, light weight, and corrosion resistance; the frame panels are cut at 45 degrees and spliced ​​with matching connecting pieces and connecting piece screws, making installation quick, efficient, and reliable.

[0007] Furthermore, the front frame panel, rear frame panel, left frame panel, and right frame panel are provided with bent edges on their upper and lower sides respectively. The distance between the upper and lower bent edges is greater than the thickness of the sound-absorbing soft package and the polyester sound-absorbing diffuser, so as to facilitate the installation and fixation of the sound-absorbing soft package and the polyester sound-absorbing diffuser, and at the same time, it can also play a certain limiting role for them.

[0008] Furthermore, the mounting frame has mounting slots on the back, which can be fitted with various mounting accessories, such as hooks and clips, making installation easier and faster.

[0009] Furthermore, sound-absorbing soft pads are provided on both sides of the polyester sound-absorbing diffuser, and the polyester sound-absorbing diffuser and the sound-absorbing soft pads are spliced ​​and assembled into one piece.

[0010] Furthermore, the polyester sound-absorbing diffuser is provided with multiple sets of fins, which are integrally formed with the polyester sound-absorbing diffuser body. There are sound-absorbing gaps between adjacent sets of fins, which provide space for the absorption and attenuation of sound waves. After the sound waves enter the sound-absorbing gaps, they come into full contact with the fins and the internal sound-absorbing material, and the sound waves are effectively absorbed through friction, vibration and other effects.

[0011] The beneficial effects that this utility model can achieve by adopting the above-mentioned technical solution are:

[0012] 1. This utility model adopts a sound absorption and diffusion complex structure mainly composed of an installation frame, sound-absorbing soft padding, and polyester sound-absorbing diffuser. Both the sound-absorbing soft padding and polyester material are excellent sound absorption and noise reduction materials, which can further improve the sound absorption and noise reduction function of the product compared with wooden products. The product frame is a narrow aluminum alloy frame, which is spliced ​​with matching connecting pieces and connecting piece screws, making installation quick, efficient, and reliable. There are mounting slots on the back of the aluminum frame, which can be equipped with a variety of installation accessories, making installation simpler and faster.

[0013] 2. The sound-absorbing soft pack and polyester diffuser of this utility model are combined and assembled. The area can be adjusted according to functional requirements. Increasing the area of ​​the sound-absorbing soft pack will increase the sound absorption coefficient of the product, while increasing the area of ​​the polyester diffuser will decrease the sound absorption coefficient and increase the sound diffusion function. The positions of the sound-absorbing soft pack and the diffuser can also be adjusted according to actual needs. It is convenient to produce and process, and simple to replace and maintain. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model.

[0015] Figure 2 This is a schematic diagram of the rear structure of this utility model.

[0016] Figure 3 This is an exploded structural diagram of the present invention.

[0017] Explanation of reference numerals in the attached diagram: 1. Mounting frame; 1-1. Front frame panel; 1-2. Rear frame panel; 1-3. Left frame panel; 1-4. Right frame panel; 1-5. Connecting piece; 1-6. Connecting piece screw; 1-7. Bent edge; 1-8. Mounting slot; 2. Sound-absorbing soft pad; 3. Polyester sound-absorbing diffuser; 3-1. Fin; 3-2. Sound-absorbing spacer. Detailed Implementation

[0018] In the description of this utility model, it should be noted that the directional terms such as "center", "lateral", "longitudinal", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", and "counterclockwise" are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. They should not be construed as limiting the specific protection scope of this utility model.

[0019] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features. Thus, the use of "first" and "second" to define a feature may explicitly or implicitly include one or more of that feature, and in this description of the utility model, "at least" means one or more, unless otherwise explicitly specified.

[0020] In this utility model, unless otherwise explicitly specified and limited, the terms "assembly," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can also refer to a mechanical connection; they can refer to a direct connection or a connection through an intermediate medium; or they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0021] In this utility model, unless otherwise specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "below," and "over" the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Above," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0022] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings, making the technical solution and beneficial effects of this utility model clearer and more explicit. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0023] like Figures 1-3As shown, this utility model is a sound absorption and diffusion complex, including a mounting frame 1, a sound-absorbing soft pad 2, and a polyester sound-absorbing diffuser 3. The sound-absorbing soft pad 2 and the polyester sound-absorbing diffuser 3 are respectively disposed within the mounting frame 1. The areas of the sound-absorbing soft pad 2 and the polyester sound-absorbing diffuser 3 can be adjusted according to functional requirements. Increasing the area of ​​the sound-absorbing soft pad will increase the sound absorption coefficient of the product, while increasing the area of ​​the polyester sound-absorbing diffuser will decrease the sound absorption coefficient and increase the sound diffusion function. The mounting frame 1 includes several frame components and connecting pieces 1-5. The connecting pieces 1-5 are connected between two adjacent frame components, and connecting piece screws 1-6 are provided on the connecting pieces 1-5 to connect and fix them to the frame components. The connecting pieces are made of stainless steel with a thickness of 1.5-2mm, which has good strength and corrosion resistance, and can ensure the stability of the frame component connection. The connecting piece screws are M4-M6 stainless steel screws, and their length is determined according to the thickness of the frame components to ensure the firmness of the connection. In this embodiment, the mounting frame 1 is a rectangular aluminum profile frame, including a front frame plate 1-1, a rear frame plate 1-2, a left frame plate 1-3, and a right frame plate 1-4. The aluminum profile is 6063-T5, with a tensile strength ≥205MPa and a yield strength ≥170MPa after aging treatment. This ensures structural strength while reducing weight (only 0.3-0.5kg per meter of frame), offering advantages such as high strength, light weight, and corrosion resistance. The frame plate is 1.5mm thick and 40mm wide. The ends of the frame plates are precision sawn at 45-degree angles, with a tolerance controlled within ±0.1°. They are assembled using matching connecting pieces 1-5 and connecting piece screws 1-6, achieving an assembly efficiency of 10 minutes per standard unit (1200×600mm). Installation is quick, efficient, and reliable. The connecting pieces are 1.8mm thick stainless steel right-angle connecting pieces, and the connecting piece screws 1-6 are M5 stainless steel screws.

[0024] The front frame panel 1-1, rear frame panel 1-2, left frame panel 1-3, and right frame panel 1-4 each have bent edges 1-7 on their upper and lower sides. These bent edges 1-7 are perpendicular to the corresponding frame panel bodies. The distance between the upper and lower bent edges is 1.5mm greater than the maximum thickness of the sound-absorbing soft pack 2 and the polyester sound-absorbing diffuser 3, facilitating the installation and fixation of the sound-absorbing soft pack and the polyester sound-absorbing diffuser, while also providing some limiting effect. The back of the mounting frame 1 has mounting slots 1-8, which are rectangular in cross-section, 8mm wide, and 10mm deep, for mounting hooks, clips, and other installation accessories, making installation simpler and faster. The installation accessories and mounting slots are fitted with a clearance of 0.2mm, ensuring both smooth assembly of the accessories and stability after installation.

[0025] In this embodiment, sound-absorbing soft pads 2 are provided on both sides of the polyester sound-absorbing diffuser 3, and the polyester sound-absorbing diffuser 3 and the sound-absorbing soft pads 2 are spliced ​​and assembled into one piece. Generally, adhesive is used at the splicing point. The adhesive used is environmentally friendly polyurethane adhesive with a bonding strength of not less than 0.5MPa to ensure the firmness of the connection between the two and to avoid environmental pollution. The polyester sound-absorbing diffuser 3 is provided with multiple sets of fins 3-1. The fins 3-1 are integrally formed with the polyester sound-absorbing diffuser body. The number of fins is determined according to the size of the polyester sound-absorbing diffuser, generally 5-20 sets, and 15 sets in this embodiment. The height of the fins is 35mm and the thickness is 3mm. There is a sound-absorbing interval 3-2 between two adjacent sets of fins, and the width of the sound-absorbing interval is 8mm. This technical solution achieves acoustic control across the entire frequency range of 250-4000Hz through the integrated design of sound-absorbing soft packaging and polyester diffuser. In the low-frequency range of 125-500Hz, efficient absorption is achieved through the Helmholtz resonance effect of the sound-absorbing intervals. In the mid-high frequency range of 1000-4000Hz, the fin structure is used to achieve multi-angle diffusion of sound waves, solving the technical problem of "insufficient absorption at low frequencies and poor diffusion at high frequencies" of traditional materials.

[0026] The sound-absorbing soft padding 2 comprises a surface fabric, sound-absorbing cotton, and a metal mesh. The surface fabric is flame-retardant polyester fiber cloth (300g / m², flame retardant rating GB8624-2012 B1), the middle layer is high-density centrifugal glass wool (50mm thick, 64kg / m³ density, noise reduction coefficient NRC≥0.9), and the bottom metal mesh is galvanized iron wire mesh (0.8mm wire diameter, 10×10mm mesh). The three layers are bonded together using ultrasonic welding, and the edges are edge-wrapped to prevent the glass wool from being exposed. It is worth noting that the metal mesh can be omitted; essentially, the fabric is directly wrapped around the front and perimeter of the sound-absorbing cotton. The thicker sound-absorbing cotton can effectively absorb sound at different frequencies.

[0027] During installation, the sound-absorbing soft package and the polyester sound-absorbing diffuser are first spliced ​​together as one unit. Then, the installation frame is assembled on the outside and assembled by connecting pieces and connecting piece screws. The bent edges are used to limit the position of the sound-absorbing soft package and the polyester sound-absorbing diffuser. Finally, the entire sound-absorbing and diffuser complex is installed on the building wall or other required locations.

[0028] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several modifications and improvements can be made without departing from the inventive concept of the present utility model, and these all fall within the protection scope of the present utility model.

Claims

1. A sound-absorbing and sound-diffusing complex, characterized in that, It includes an installation frame, sound-absorbing soft padding, and polyester sound-absorbing diffuser, with the sound-absorbing soft padding and polyester sound-absorbing diffuser respectively set inside the installation frame.

2. The sound absorption and diffusion complex according to claim 1, characterized in that, The mounting frame includes several frame components and connecting pieces. The connecting pieces are connected between two adjacent frame components, and the connecting pieces are equipped with connecting piece screws to connect and fix them to the frame components.

3. The sound absorption and diffusion complex according to claim 2, characterized in that, The mounting frame is a rectangular aluminum profile frame, consisting of a front frame panel, a rear frame panel, a left frame panel, and a right frame panel; the frame panels are beveled at 45 degrees and assembled using matching connecting pieces and connecting piece screws.

4. The sound absorption and diffusion complex according to claim 3, characterized in that, The front frame panel, rear frame panel, left frame panel, and right frame panel are provided with bent edges on their upper and lower sides, and the distance between the upper and lower bent edges is greater than the thickness of the sound-absorbing soft pack and the polyester sound-absorbing diffuser.

5. The sound absorption and diffusion complex according to claim 1, characterized in that, The mounting frame has mounting slots on the back.

6. The sound absorption and diffusion complex according to claim 1, characterized in that, The polyester sound-absorbing diffuser has sound-absorbing soft pads on both sides, and the polyester sound-absorbing diffuser and the sound-absorbing soft pads are spliced ​​and assembled into one piece.

7. The sound absorption and diffusion complex according to claim 1, characterized in that, The polyester sound-absorbing diffuser is provided with multiple sets of fins, which are integrally formed with the polyester sound-absorbing diffuser body, and there is a sound-absorbing interval between two adjacent sets of fins.

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