A noise reduction plate, cabinet body and house

Abstract

The application provides a noise reduction plate, a cabinet body and a house. The noise reduction plate comprises a first substrate layer, a sound insulation plate layer and a second substrate layer which are sequentially stacked; the sound insulation plate layer is made of a high polymer damping material; the density of the first substrate layer is less than that of the sound insulation plate layer, and the density of the sound insulation plate layer is higher than that of the second substrate layer; the material and the density of the first substrate layer, the sound insulation plate layer and the second substrate layer are constrained, the vibration frequency of the noise reduction plate is changed, a damping constraint structure is formed, the mechanical energy of the sound wave generated on the noise reduction plate by the noise impacting or propagating through the air can be dissipated in the form of heat, and the purpose of reducing the noise is achieved.

Description

Technical Field

[0001] This application belongs to the field of building materials technology, and more specifically, relates to a noise reduction board, cabinet and house. Background Technology

[0002] Building panels are commonly used in building structures, interior decoration, and furniture manufacturing. To address noise pollution, noise-reducing panels are frequently used as building panels. Noise-reducing panels are functional panels used in construction, transportation, and other fields to reduce noise pollution; they are typically made of sound-absorbing materials, sound-insulating materials, or composite materials.

[0003] In home decoration products such as doors, walls, and cabinets, the main products requiring noise reduction are entrance doors, interior doors, and windows. However, there is a lack of noise-reducing materials in these products. Products like polyester fiber sound-absorbing cotton and PU sound-absorbing cotton are difficult to apply in actual home decoration. Utility Model Content

[0004] This application provides a noise reduction panel, cabinet, and house to reduce noise.

[0005] In a first aspect, embodiments of this application provide a noise reduction board, comprising a first substrate layer, a sound insulation board layer, and a second substrate layer stacked sequentially; the sound insulation board layer is made of a polymer damping material; the density of the first substrate layer is less than the density of the sound insulation board layer, and the density of the sound insulation board layer is higher than the density of the second substrate layer.

[0006] Furthermore, the density of the first substrate layer is 550-900 kg / m³. 3 The density of the sound insulation board layer is 1500-2000 kg / m³. 3 The density of the second substrate layer is 550-900 kg / m³. 3 .

[0007] Furthermore, the first substrate layer and the second substrate layer may be made of the same or different materials.

[0008] Furthermore, the first substrate layer and the second substrate layer may have the same or different densities.

[0009] Furthermore, the first substrate layer is made of engineered wood; the second substrate layer is made of engineered wood.

[0010] Furthermore, the noise reduction board satisfies at least one of the following:

[0011] a. The engineered wood products include particleboard, OSB, plywood, or MDF;

[0012] b. The material of the sound insulation board layer is a polymer sound insulation felt;

[0013] c. The thickness of the first substrate is greater than the thickness of the sound insulation layer;

[0014] d. The thickness of the second substrate is greater than the thickness of the sound insulation layer;

[0015] e. The thickness ratio of the first substrate layer, the sound insulation layer, and the second substrate layer is (2-24):(0.5-1):(2-24).

[0016] Furthermore, a decorative layer is provided on the first substrate layer or the second substrate layer.

[0017] Furthermore, the decorative layer includes melamine finish, PET finish, PVC finish, painted finish, or wood veneer finish.

[0018] Secondly, embodiments of this application provide a cabinet including the noise reduction panel.

[0019] Thirdly, embodiments of this application provide a house, including at least one of the cabinet, wall, and door; the wall includes a first panel; the door includes a second panel; both the first panel and the second panel include the noise reduction panel.

[0020] An embodiment of the present application provides a noise reduction board, cabinet, and house. By constraining the material and density of the first substrate layer, the sound insulation board layer, and the second substrate layer, the vibration frequency of the noise reduction board is changed, forming a damping constraint structure. The mechanical energy of sound waves generated by impact or noise transmitted through the air can be dissipated in the form of heat, thereby achieving the purpose of reducing noise. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the noise reduction board.

[0023] Figure 2 A schematic diagram illustrating the principle of noise reduction using a noise reduction board.

[0024] Figure 3 This is a schematic diagram illustrating the noise reduction principle of a house.

[0025] The attached figures are labeled as follows:

[0026] 1-First substrate layer, 2-Sound insulation layer, 3-Second substrate layer, 4-Heat dissipation, 5-Sound source, 6-Wall, 7-Outdoor sound source, 8-Indoor sound source, 9-Cabinet, 10-Second board, 11-Noise reduction board, 12-First board. Detailed Implementation

[0027] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0028] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0029] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application 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. Therefore, they should not be construed as limitations on this application.

[0030] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0031] Building panels are commonly used in building structures, interior decoration, and furniture manufacturing. To address noise pollution, noise-reducing panels are frequently used as building panels. Noise-reducing panels are functional panels used in construction, transportation, and other fields to reduce noise pollution; they are typically made of sound-absorbing materials, sound-insulating materials, or composite materials.

[0032] Generally, noise pollution sources include: traffic noise (motor vehicles, rail transit, aviation, ships); construction noise; industrial noise (factory machinery operation, logistics warehouse forklift loading and unloading); social noise (music and noise from entertainment venues such as bars, KTVs, night market food stalls, square dancing, loudspeakers from shops, street performances, neighboring pets barking, family gatherings, etc.); and other noise sources (thunderstorms, strong winds, air conditioner outdoor units, transformers, water pump rooms, etc.).

[0033] Sound insulation and noise reduction technology is mainly used in commercial environments such as theaters, cinemas, and conference rooms. In home decoration, products with sound insulation and noise reduction functions are mainly entrance doors, interior doors, and windows. However, there are no suitable sound insulation and noise reduction panels for furniture doors, walls, and cabinets. Products such as polyester fiber sound-absorbing cotton and PU sound-absorbing cotton on the market are difficult to apply in actual home decoration.

[0034] The related technologies have the following drawbacks:

[0035] 1. The sound insulation and noise reduction boards commonly used in commercial applications have limited and unattractive designs, failing to meet the needs of home decoration customers. The material dimensions are typically 600*600 or 1200*1200 mm, which is insufficient for furniture manufacturing applications.

[0036] 2. The installation of the construction materials is complex, mainly using a structure of keel + sound-absorbing cotton filling + sound insulation board. It requires a dedicated installation team, and furniture installation teams do not have this kind of professional knowledge.

[0037] 3. Glass wool and rock wool, which are frequently used in tooling materials, have high requirements for construction. When they are installed, cut or damaged, their fiber dust is the main source of health hazards. The dust irritates the respiratory tract, skin and eyes, and long-term inhalation of large amounts may lead to pneumoconiosis.

[0038] 4. Custom furniture products such as doors, walls, and cabinets lack sound-insulating and noise-reducing boards. Custom furniture mainly uses artificial boards, which do not have sound-insulating and noise-reducing functions.

[0039] To reduce noise, in a first aspect, embodiments of this application provide a noise reduction board 11, see [reference]. Figure 1-2 As shown, it includes a first substrate layer 1, a sound insulation layer 2, and a second substrate layer 3 stacked sequentially; the sound insulation layer is made of a polymer damping material; the density of the first substrate layer is less than the density of the sound insulation layer, and the density of the sound insulation layer 2 is higher than the density of the second substrate layer 3.

[0040] The above technical solution achieves noise reduction by setting up a composite structure of a first substrate layer, a sound insulation board layer and a second substrate layer stacked in sequence, and utilizing the synergistic effect of different material properties of each layer.

[0041] The density of the first substrate layer is less than that of the sound insulation layer. The lower density of the first substrate layer is relatively loose, and when sound waves arrive, some of the sound waves will be reflected and scattered multiple times within the first substrate layer, causing the energy of the sound waves to gradually attenuate during propagation. This reduces the amount of sound wave energy entering the sound insulation layer and helps the sound insulation layer achieve a better noise reduction effect.

[0042] The sound insulation panel is made of polymer damping material, which has good energy dissipation characteristics. When sound waves enter, it can convert sound energy into heat energy and other forms of energy through its own molecular motion, thereby effectively reducing the propagation of sound and playing a key role in noise reduction.

[0043] The second substrate layer can protect the sound insulation layer. On the other hand, similar to the first substrate layer, its density characteristics can also cause sound waves to be reflected and scattered within the layer, further consuming sound wave energy. At the same time, it can also block some of the sound that is not completely absorbed by the sound insulation layer and passes through, thus enhancing the overall sound insulation and noise reduction performance.

[0044] Therefore, by constraining the material and density of the first substrate layer, the sound insulation layer, and the second substrate layer, the vibration frequency of the noise reduction plate is changed, forming a damping constraint structure. The mechanical energy of sound waves generated by impact or air transmission can be dissipated in the form of heat, thereby achieving the purpose of reducing noise.

[0045] Furthermore, the density of the first substrate layer is 550-900 kg / m³. 3 The density of the sound insulation board layer is 1500-2000 kg / m³. 3 The density of the second substrate layer is 550-900 kg / m³. 3 .

[0046] The density of the first and second substrate layers is relatively low, i.e., 550-900 kg / m³. 3 When sound waves propagate to these two layers, they are reflected and scattered due to the change in medium density as they enter the substrate layer from the air. This reflection and scattering alters the direction of sound wave propagation, and some of the sound wave energy is continuously reflected and collided within the layers, gradually consuming energy and thus reducing the intensity of the sound waves. This reduces the amount of sound waves entering the sound insulation layer, achieving a preliminary noise reduction effect. For example, the density of the first and second substrate layers is selected from 550, 600, 650, 700, 750, 800, 850, or 900 kg / m³. 3 This is just an example and is not intended to be limiting.

[0047] The sound insulation panel layer uses a high-density polymer damping material, i.e., 1500-2000 kg / m². 3High-polymer damping materials possess a unique molecular structure and viscoelasticity. When sound waves enter the sound insulation panel layer, the molecular chains within the material undergo relative movement and deformation. Through intermolecular friction and internal dissipation, the mechanical energy of the sound waves is converted into heat energy and dissipated. High density makes the molecules within the material more compact and the intermolecular interactions stronger, enabling more effective absorption and dissipation of sound wave energy, achieving deep noise reduction. The density of the sound insulation panel layer is selected from 1500, 1600, 1700, 1800, 1900, or 2000 kg / m³. 3 This is just an example and is not intended to be limiting.

[0048] For noise reduction principles, please refer to [link / reference]. Figure 1 and Figure 2 As shown, a sound insulation layer 2 is disposed between the first substrate layer and the second substrate layer of the noise reduction board 11. The sound source 5 contacts the first substrate layer through impact or air transmission. The mechanical energy of the sound source 5 is weakened by the first substrate layer, and the remaining mechanical energy is dissipated as heat in the sound insulation layer 2. Optionally, the three-layer structure of the noise reduction board is formed by high-pressure composite molding, which can change the vibration frequency of the raw materials to form a damping constraint structure, so that the mechanical energy of the sound waves from impact or air transmission is dissipated as heat. Optionally, the overall material thickness of the three-layer composite structure can be controlled by adjusting the material thickness of each layer. Using materials of different thicknesses can adjust the sound insulation and noise reduction effect, thickness, and cost. For example, a 16mm thick noise reduction board is formed using a 9mm front panel + 1mm polymer sound insulation felt + 6mm back panel; a 22mm thick noise reduction board is formed using a 12mm front panel + 1mm polymer sound insulation felt + 9mm back panel. Optionally, the density of the first substrate layer and the second substrate layer is 550-900 kg / m³. 3 The density of the sound insulation board layer is 2000 kg / m³. 3 .

[0049] The noise reduction panel in this embodiment adopts a three-layer composite structure, which differs from the single structure of existing furniture engineered wood panels. The composite structure can achieve good sound insulation and noise reduction performance; its production size can use commonly used 48-foot and 49-foot panels. The noise reduction panel in this embodiment can be installed using existing general cabinet installation processes, namely the common wet-hanging and dry-hanging wall panel installation processes.

[0050] Furthermore, the first substrate layer and the second substrate layer may be made of the same or different materials.

[0051] The first and second substrate layers are made of the same material, so their reflection and scattering characteristics for sound waves are quite similar. This consistency results in relatively regular reflection and scattering patterns when sound waves pass through these two layers, contributing to a more stable acoustic environment. The same material may also have similar damping characteristics. When sound waves cause the substrate layers to vibrate, the two substrate layers can work together to dampen the sound waves and dissipate their energy.

[0052] The first and second substrate layers are made of different materials. Different materials have different acoustic properties and respond differently to sound waves of different frequencies. The interface between different materials produces more complex reflection, refraction, and absorption phenomena. When a sound wave travels from one material to another, it is reflected and transmitted due to the difference in acoustic impedance. This complex acoustic process increases the propagation path of the sound wave within the noise reduction plate, allowing for more complete interaction between the sound wave and the material, thereby further improving the noise reduction effect.

[0053] Furthermore, the first substrate layer and the second substrate layer may have the same or different densities.

[0054] The first and second substrate layers have the same density, resulting in a symmetrical propagation environment for sound waves as they pass through them. This symmetry ensures that the reflection, refraction, and absorption of sound waves on both sides of the noise reduction plate are relatively consistent, contributing to the formation of a stable acoustic field. Substrate layers of different densities exhibit different response characteristics to sound waves of different frequencies. Low-density substrate layers show better reflection and scattering of high-frequency sound waves, allowing them to be reflected multiple times within the layer, thus dissipating energy. By rationally selecting the density combination of the two substrate layers, the coverage range of the noise reduction plate for different frequency sound waves can be broadened, improving its adaptability to complex noise environments.

[0055] Furthermore, the first substrate layer is made of engineered wood; the second substrate layer is made of engineered wood.

[0056] The engineered wood panel has a porous structure. When sound waves enter the first substrate layer, they undergo multiple reflections, refractions, and scatterings within these pores. This complex acoustic process lengthens the sound wave's propagation path, and the energy is gradually dissipated through continuous collisions with the pore walls, thus achieving initial sound wave attenuation. Similarly, the second substrate layer can further attenuate any remaining sound waves that may have passed through the sound insulation layer.

[0057] The engineered wood panels and the high-density sound insulation layer in the middle work together to form a multi-layered noise reduction structure. The first substrate layer initially treats the sound waves, reducing the intensity of the sound waves entering the sound insulation layer; the high density and special damping material of the sound insulation layer deeply absorb and dissipate the sound waves; the second substrate layer further blocks the small amount of sound waves that may pass through the sound insulation layer and attenuates these sound waves again, thereby improving the overall noise reduction effect.

[0058] Furthermore, the engineered wood panel includes particleboard, OSB, plywood, or MDF; the sound insulation layer is made of polymer sound insulation felt; the thickness of the first substrate is greater than the thickness of the sound insulation layer; and the thickness of the second substrate is greater than the thickness of the sound insulation layer.

[0059] The first and second substrate layers can be made of engineered wood products commonly used in custom furniture, such as particleboard, OSB, plywood, and MDF, to meet the diverse needs of substrate types.

[0060] Particleboard and OSB are made by layering wood chips or shavings of different sizes together with adhesive, resulting in a large number of irregular pores inside. These pores form a complex acoustic channel network. When low-frequency sound waves enter, they are reflected and refracted multiple times in the pores. The sound wave energy is continuously lost during the friction with the pore walls, thus achieving effective absorption of low-frequency sound waves.

[0061] Multi-layer boards are made of multiple layers of thin wood veneers cross-laminated together. Their unique layered structure resonates under the influence of low-frequency sound waves. By rationally designing the number of layers, thickness, and wood types in the multi-layer board, the resonant frequency can be adjusted to match the frequency of the target low-frequency noise, thus achieving efficient absorption of specific low-frequency sound waves. Medium-density fiberboard (MDF) has uniform and dense internal fibers, possessing good elasticity and damping characteristics. When low-frequency sound waves cause MDF to vibrate, the friction and relative motion between the fibers convert sound energy into heat energy, dissipating the sound wave energy.

[0062] Polymer sound insulation felt has high density and good damping properties, which can effectively block the propagation of low-frequency sound waves. It absorbs and dissipates sound wave energy through its own elastic deformation, complementing the low-frequency absorption of the first and second substrates to form a multi-layered low-frequency noise reduction barrier.

[0063] The thickness ratio of the first substrate layer, the sound insulation layer, and the second substrate layer is (2-24):(0.5-1):(2-24). For example, the thickness ratio of the first substrate layer, the sound insulation layer, and the second substrate layer is 2:0.5:2, 24:1:24, or 12:1:12; this is only an example and is not a limitation.

[0064] The first and second substrate layers are relatively thick (thickness ratio in the range of 2-24), and they can function similarly to a mass-spring system in absorbing low-frequency resonance. The thicker substrate layer has a greater mass, and when low-frequency sound waves are incident, the substrate layer vibrates, converting sound energy into heat energy through friction with the internal structure, thereby effectively absorbing low-frequency noise.

[0065] The sound insulation panel is relatively thin and made of high-density material, possessing excellent damping characteristics. It can prevent sound waves from directly penetrating between the first and second substrate layers, further enhancing the blocking effect on low-frequency sound waves.

[0066] The material of the sound insulation panel includes rubber-based damping materials, plastic damping materials, or thermoplastic elastomers.

[0067] Rubber-based damping materials include butyl rubber and nitrile rubber. Butyl rubber's densely packed side methyl groups on its molecular chains result in high frictional resistance and internal loss during chain segment movement, leading to excellent damping performance. Its loss peak temperature range is wide (-70℃ to 20℃), making it suitable for low-temperature environments. Nitrile rubber contains polar side cyano groups, resulting in high frictional resistance during chain segment movement and outstanding damping performance.

[0068] Plastic damping materials include polyurethane, epoxy resin, poly(meth)acrylate, or polyvinyl acetate.

[0069] Furthermore, a decorative layer is provided on the first substrate layer or the second substrate layer.

[0070] Furthermore, the decorative layer includes melamine finish, PET (polyethylene terephthalate) finish, PVC (polyvinyl chloride) finish, painted finish, or wood veneer finish.

[0071] The finish can use melamine finish, PET finish, PVC finish, painted finish, wood veneer finish, and other finishes commonly used in custom furniture.

[0072] Melamine finishes, PET finishes, PVC finishes, and painted finishes all possess excellent weather resistance and UV resistance, maintaining vibrant and stable colors for extended periods without fading or discoloration. Even under prolonged exposure to sunlight, they retain their decorative effect, reducing the cost of later maintenance and replacement.

[0073] Melamine finish, PET finish, PVC finish, painted finish, wood veneer finish and other finishes can meet the diverse needs of the market. Therefore, the embodiments of this application can provide a furniture sound insulation and noise reduction board with a variety of colors and finishes, a variety of base materials, controllable thickness, mass production and processing capability, simple installation and safety and environmental protection.

[0074] In addition, noise reduction panels can be made in thicknesses of 1, 3, 6, 9, 12, 15, 16, 18, 22 or 25 mm, which can match the thicknesses commonly used in custom furniture.

[0075] To facilitate installation, the noise-reducing board can also be equipped with mounting holes compatible with existing custom furniture, making production and installation easier. The formaldehyde emission level of the noise-reducing board in this embodiment meets requirements, and cutting and drilling do not generate fibrous dust, thus posing no harm to the human body.

[0076] The noise-reducing board of this application embodiment can be used as a wall panel or as a thick back panel for cabinets. Its application on walls and cabinets requiring sound insulation and noise reduction can achieve good sound insulation and noise reduction effects. Compared with currently used artificial boards, the noise-reducing board of this application embodiment can improve sound insulation and noise reduction performance by 8-20 dB, depending on the material combination.

[0077] Secondly, this application provides a cabinet 9, see [link to relevant documentation]. Figure 3 As shown, it includes the noise reduction board 11.

[0078] The functions and effects of the technical features in this technical solution that are similar to or related to the aforementioned technical solution are similar to those in the aforementioned technical solution, and the inventive concept and beneficial effects of this technical solution are similar to those in the aforementioned technical solution, so they will not be repeated here.

[0079] Thirdly, this application provides a house, see [reference]. Figure 3 As shown, it includes at least one of the cabinet 9, wall 6 and door; the wall 6 includes a first panel 12; the door includes a second panel 10; both the first panel 12 and the second panel 10 include the noise reduction panel 11.

[0080] See Figure 3 As shown, the interior wall 6 of the house is installed with a first panel 12, which includes a noise reduction panel 11. This greatly reduces the amount of noise generated by the outdoor sound source 7 entering the house. The door of the bedroom is installed with a second panel 10, which also includes a noise reduction panel 11. The bedroom is equipped with a cabinet 9, which greatly reduces the amount of noise generated by the indoor sound source 8 in the bedroom entering other rooms in the house. Thus, the bedroom and other rooms in the house have a good sound insulation and noise reduction effect.

[0081] The functions and effects of the technical features in this technical solution that are similar to or related to the aforementioned technical solution are similar to those in the aforementioned technical solution, and the inventive concept and beneficial effects of this technical solution are similar to those in the aforementioned technical solution, so they will not be repeated here.

[0082] The above are merely preferred embodiments of this application and are not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A noise reduction board, characterized in that, It includes a first substrate layer, a sound insulation board layer, and a second substrate layer stacked sequentially; the sound insulation board layer is made of a polymer damping material; the density of the first substrate layer is less than the density of the sound insulation board layer, and the density of the sound insulation board layer is higher than the density of the second substrate layer.

2. The noise reduction board according to claim 1, characterized in that, The density of the first substrate layer is 550-900 kg / m³ 3 The density of the sound insulation board layer is 1500-2000 kg / m³. 3 The density of the second substrate layer is 550-900 kg / m³. 3 .

3. The noise reduction board according to claim 1, characterized in that, The first substrate layer and the second substrate layer may be made of the same or different materials.

4. The noise reduction board according to any one of claims 1-3, characterized in that, The first substrate layer and the second substrate layer may have the same or different densities.

5. The noise reduction board according to claim 4, characterized in that, The first substrate layer is made of engineered wood; the second substrate layer is made of engineered wood.

6. The noise reduction board according to claim 5, characterized in that, Meet at least one of the following: a. The engineered wood products include particleboard, OSB, plywood, or MDF; b. The material of the sound insulation board layer is a polymer sound insulation felt; c. The thickness of the first substrate is greater than the thickness of the sound insulation layer; d. The thickness of the second substrate is greater than the thickness of the sound insulation layer; e. The thickness ratio of the first substrate layer, the sound insulation layer, and the second substrate layer is (2-24):(0.5-1):(2-24).

7. The noise reduction board according to claim 6, characterized in that, A decorative layer is provided on the first substrate layer or the second substrate layer.

8. The noise reduction board according to claim 7, characterized in that, The decorative layer includes melamine finish, PET finish, PVC finish, painted finish, or wood veneer finish.

9. A cabinet, characterized in that, Includes the noise reduction board according to any one of claims 1-8.

10. A type of house, characterized in that, It includes at least one of the cabinet, wall and door as described in claim 9; the wall includes a first panel; the door includes a second panel; both the first panel and the second panel include the noise reduction panel as described in any one of claims 1-8.

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