Novel composite heat and sound insulation board of bionic honeycomb structure

Abstract

The utility model relates to the technical field of sound insulation board, a novel composite heat -preserving sound insulation board of bionic honeycomb structure, include: heat -preserving sound insulation board, heat -preserving sound insulation board includes end plate, second heat -preserving layer and backboard, end plate, second heat -preserving layer and backboard are sequentially laminatedly arranged along the wall thickness direction of heat -preserving sound insulation board, second heat -preserving layer inside is provided with a plurality of cavities, a plurality of cavities are spacedly distributed along the plane direction of second heat -preserving layer, and the cavity extends along the wall thickness direction of heat -preserving sound insulation board, heat -preserving sound insulation board is provided with the injection hole, and each cavity all communicates injection hole. Significantly improve the overall heat insulation performance, effectively reduce indoor temperature fluctuation amplitude, and then improve the comfort degree of resident indoor living environment.

Description

Technical Field

[0001] This utility model relates to the field of sound insulation board technology, and in particular to a novel composite thermal insulation and sound insulation board with a biomimetic honeycomb structure. Background Technology

[0002] With the acceleration of urbanization, the density of high-rise buildings in cities has increased, transportation networks have expanded, and industrial parks have sprung up, resulting in increasingly prominent combined noise pollution from traffic, industry, and neighborhoods. This noise pollution continuously erodes the living environment, reduces acoustic comfort, and affects residents' quality of life. To improve this situation and enhance residents' living quality, existing buildings generally use materials such as sound insulation cotton and sound insulation panels to improve sound insulation performance. These materials not only block noise transmission but also provide a certain degree of thermal insulation, thus optimizing both the acoustic and thermal environments.

[0003] In the existing technology, some composite thermal insulation and sound insulation panels use aluminum honeycomb composite panels as the core structure. However, the thermal insulation performance of this type of structure is obviously limited. The overall thermal insulation effect of the composite panel is generally poor. When applied to the interior enclosure structure of civil buildings, it is difficult to maintain a stable room temperature, and the indoor temperature fluctuates greatly. Utility Model Content

[0004] In order to overcome the shortcomings of the existing technology, the purpose of this utility model is to provide a new type of composite thermal insulation and sound insulation board with a biomimetic honeycomb structure, which significantly improves the overall thermal insulation performance, effectively reduces the fluctuation range of indoor temperature, and thus improves the comfort of residents' indoor living environment.

[0005] The objective of this utility model is achieved through the following technical solution:

[0006] A novel composite thermal insulation and soundproofing board with a biomimetic honeycomb structure includes:

[0007] A thermal insulation and sound insulation board, comprising an end plate, a second insulation layer, and a back plate, wherein the end plate, the second insulation layer, and the back plate are sequentially stacked along the wall thickness direction of the thermal insulation and sound insulation board; the second insulation layer has multiple cavities inside, which are spaced apart along the plane of the second insulation layer and extend along the wall thickness direction of the thermal insulation and sound insulation board; the thermal insulation and sound insulation board has air injection holes, and each cavity is connected to the air injection hole.

[0008] Furthermore, the thermal insulation and soundproofing board also includes a first buffer layer, a sound-absorbing layer, a sound-insulating layer, a second buffer layer, and a first thermal insulation layer. The end plate, the first buffer layer, the sound-absorbing layer, the sound-insulating layer, the second buffer layer, the first thermal insulation layer, the second thermal insulation layer, and the back plate are stacked sequentially along the wall thickness direction of the thermal insulation and soundproofing board.

[0009] Furthermore, the back plate has an air delivery groove on the side near the second insulation layer. The air delivery groove is recessed in a direction away from the second insulation layer and connects to the air injection hole and the plurality of cavities.

[0010] Furthermore, the second insulation layer has multiple air inlets, each of which is connected to two of the cavities.

[0011] Furthermore, the air injection hole is located on the back plate, or the air injection hole is located on the second insulation layer.

[0012] Furthermore, the cross-sectional inner contour of the cavity is a regular hexagon, the distance between opposite sides of the regular hexagon is 40-50mm, and multiple regular hexagons are arranged in a honeycomb array.

[0013] Furthermore, the distance between adjacent cavities is 3-5 mm.

[0014] Furthermore, the air injection hole is provided with an air injection assembly, which includes an air injection nozzle, a sealing nut, and an elastic sealing ring; the outer wall of the air injection nozzle is provided with an external thread, which is adapted to the internal thread of the inner wall of the air injection hole; the sealing nut covers the opening outside the air injection nozzle; and the elastic sealing ring is sleeved on the outside of the air injection nozzle and elastically abuts against the hole wall of the air injection hole.

[0015] Furthermore, the novel composite thermal insulation and sound insulation board with a biomimetic honeycomb structure also includes an edge sealant layer, which extends circumferentially around the thermal insulation and sound insulation board. The end plate, the first buffer layer, the sound-absorbing layer, the sound-insulating layer, the second buffer layer, the first thermal insulation layer, the second thermal insulation layer, and the back plate are all covered by the edge sealant layer.

[0016] Furthermore, the edge sealant layer is a silicone structural sealant or a polyurethane sealant.

[0017] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0018] 1. By injecting inert gas into the cavity in addition to noise isolation, the thermal insulation performance of the thermal and sound insulation board can be effectively improved. While isolating external high temperatures, it can also maintain the stability of indoor temperature, avoid excessive fluctuations in indoor temperature, and improve the comfort of the indoor environment. Attached Figure Description

[0019] Figure 1 This is a structural schematic diagram of the isometric side sectional view of the present invention;

[0020] Figure 2 This is a schematic diagram of the structure of the present invention, shown in a side sectional view.

[0021] Figure 3 for Figure 2 The diagram shows a partially enlarged structural schematic of the air injection port in the side sectional view.

[0022] In the diagram: 1. End plate; 2. First buffer layer; 3. Sound-absorbing layer; 4. Sound-insulating layer; 5. Second buffer layer; 6. First insulation layer; 7. Second insulation layer; 8. Back plate; 81. Air inlet groove; 82. Air inlet hole; 821. Air inlet nozzle; 822. Sealing nut; 823. Elastic sealing ring; 9. Edge sealing adhesive layer. Detailed Implementation

[0023] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0024] It should be noted that when an element is described as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is described as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementations.

[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the specification of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0026] See Figures 1-3 An embodiment of this utility model discloses a novel composite thermal insulation and sound insulation board with a biomimetic honeycomb structure, comprising: an end plate 1, a second thermal insulation layer 7, and a back plate 8.

[0027] The thermal insulation and sound insulation board includes an end plate 1, a second thermal insulation layer 7, and a back plate 8. The end plate 1, the second thermal insulation layer 7, and the back plate 8 are stacked sequentially along the wall thickness direction of the thermal insulation and sound insulation board. The second thermal insulation layer 7 has multiple cavities inside, which are distributed at intervals along the plane of the second thermal insulation layer 7 and extend along the wall thickness direction of the thermal insulation and sound insulation board. The thermal insulation and sound insulation board has air injection holes 82, and each cavity is connected to the air injection holes 82.

[0028] Based on the sequential stacking of the end plate 1, the second insulation layer 7, and the back plate 8, the cavity inside the second insulation layer 7 can be kept in a closed environment. Inert gas (such as argon, nitrogen, or krypton) is injected into the cavity inside the second insulation layer 7 through the injection holes 82, filling each cavity with inert gas. The stationary inert gas significantly reduces heat transfer, making it more difficult for heat to penetrate the cavity. Simultaneously, the spaced cavities prevent heat convection, thus providing excellent insulation.

[0029] Based on the aforementioned thermal insulation and soundproofing panels, the method of injecting inert gas into the cavity, while isolating noise, can effectively improve the thermal insulation performance of the panels. This not only isolates external high temperatures but also maintains stable indoor temperatures, preventing excessive fluctuations in indoor temperature and enhancing the comfort of the indoor environment.

[0030] Preferably, the thermal insulation and soundproofing board further includes a first buffer layer 2, a sound-absorbing layer 3, a sound-insulating layer 4, a second buffer layer 5, and a first thermal insulation layer 6. The end plate 1, the first buffer layer 2, the sound-absorbing layer 3, the sound-insulating layer 4, the second buffer layer 5, the first thermal insulation layer 6, the second thermal insulation layer 7, and the back plate 8 are stacked sequentially along the wall thickness direction of the thermal insulation and soundproofing board. The end plate 1 is preferably made of aluminum alloy plate, which is lightweight, rust-proof, and aesthetically pleasing. Its surface can be anodized for decorative purposes. The first buffer layer 2 and the second buffer layer 5 can be made of closed-cell foam or polyester fiber felt. Closed-cell foam is elastic, aging-resistant, waterproof, and has a high compression rebound rate. Polyester fiber felt is soft, environmentally friendly, odorless, and has slight sound absorption properties. The sound-absorbing layer 3 is preferably made of rock wool, which has a high fire resistance rating (A1 grade non-combustible), high temperature resistance, and dual functions of sound absorption and heat insulation. The sound insulation layer 4 is preferably made of lead, which has extremely high surface density and excellent sound insulation effect. The first insulation layer 6 and the second insulation layer 7 can be made of glass wool or rock wool with aluminum foil covering the surface, which can simultaneously achieve sound absorption and heat insulation functions, and has a strong heat insulation effect. The end plate 1 can be made of gypsum board or calcium silicate board, which is fireproof and easy to adhere to the wall. It should also be noted that the materials of the components of the above-mentioned thermal insulation and soundproofing panels can be replaced according to the usage and environment.

[0031] Based on the above-mentioned layered arrangement, the end plate 1, the first buffer layer 2, the sound-absorbing layer 3, the sound-insulating layer 4, the second buffer layer 5, the first thermal insulation layer 6, the second thermal insulation layer 7, and the back plate 8 can be combined into a thermal insulation and sound insulation board by sealing them with glue. When noise propagates, it first passes through the first buffer layer 2, which weakens the vibration transmission efficiency of the noise. Then, it passes through the sound-absorbing layer 3, which absorbs the noise and converts it into a small amount of heat energy, reducing noise interference. Finally, it passes through the sound insulation layer 4, which isolates the sound through reflection, absorption, and damping mechanisms. The first buffer layer 2, the sound-absorbing layer 3, and the sound insulation layer 4 work together to achieve the function of sound insulation. The function of the second buffer layer 5 is to form a flexible buffer between the sound insulation layer 4 and the second insulation layer 7, reducing the vibration transmission between the sound insulation layer 4 and the second insulation layer 7, and extending the service life of the insulation and sound insulation board. Based on the above-mentioned first insulation layer 6, second insulation layer 7, and back plate 8, the second insulation layer 7 is filled with inert gas through the air injection hole 82, which can significantly reduce heat transfer. The second insulation board provides secondary insulation for heat, ensuring that heat transfer is blocked to the maximum extent, achieving a highly efficient and stable insulation effect. The sealing of the back plate 8 can prevent the leakage of inert gas in the second insulation layer 7, ensuring that it maintains a highly efficient heat-insulating state for a long time, while also protecting the two internal insulation layers from damage by the external environment. The insulation and soundproofing functions of the insulation and soundproofing panels are achieved through the cooperation of the various modules mentioned above.

[0032] Preferably, the back plate 8 has a gas-feeding groove 81 on the side near the second insulation layer 7. The gas-feeding groove 81 is recessed in the direction away from the second insulation layer 7 and connects to the gas injection hole 82 and multiple cavities. The cavities are used to contain gas. When inert gas is injected, the inert gas enters each cavity through the gas-feeding groove 81. After the gas pressure in the cavity reaches a certain level, each cavity is filled with inert gas. As an alternative to the gas-feeding groove 81, the second insulation layer 7 has multiple gas-feeding holes, each connecting to two cavities. When inert gas is injected, the inert gas first enters the cavity connected to the gas injection hole 82. After the inert gas in the cavity reaches a certain concentration, it enters the adjacent cavity through the gas injection hole. After the gas pressure in the cavity reaches a certain level, it proves that each cavity is filled with inert gas. For the two solutions mentioned above, setting the gas delivery groove 81 on the back plate 8 makes it easier to process the gas delivery groove 81 (such as die casting integral molding, direct plane machining), reduces the thickness of the back plate 8, reduces the overall weight, and is also more conducive to the transmission of inert gas. However, it will affect the performance of the back plate 8 to some extent. The method of opening multiple gas delivery holes in the second insulation layer 7 can ensure that the performance of the back plate 8 is not affected, and can also realize the function of inert gas transmission. However, it is more difficult to process the gas delivery holes on the second insulation layer 7, and the gas transmission efficiency is not as fast as the first method.

[0033] The air injection port 82 is located on the back plate 8, or on the second insulation layer 7. The air injection port can be located on the back plate 8 or on the exposed circumferential sidewall of the second insulation layer 7. Depending on the actual application, the preferred location for the air injection port 82 is the back plate 8.

[0034] The cross-sectional inner contour of the cavity is a regular hexagon, with the distance between opposite sides of the hexagon being 40-50mm. Multiple regular hexagons are arranged in a honeycomb array. Each side of the regular hexagonal cavity is of equal length. When the board is subjected to external pressure (such as installation compression or impact), the pressure will be evenly transmitted to the entire second insulation layer 7 through the sides of the hexagon, avoiding stress concentration at a single point that could cause the cavity to rupture. The size of the cavity in the 40-50mm range ensures that the gas layer inside the cavity has sufficient thickness to block heat conduction and suppress gas convection. At the same time, it balances the support strength of the hexagonal sides with the amount of base material used, avoiding excessive or insufficient size that would lead to a decrease in thermal insulation performance. The honeycomb structure formed by the regular hexagonal honeycomb array of cavities can maximize the reduction of the base material used in the second insulation layer 7, achieving lightweighting (40%-60% weight reduction compared to solid insulation layers) while ensuring the overall structural rigidity.

[0035] The spacing between adjacent cavities is 3-5mm. An appropriate spacing can prevent the substrate from being too thin due to too small a spacing, which would be unable to withstand the clamping force of the end plate 1 and the back plate 8 or external impact. It can also prevent the substrate from being redundant between cavities due to too large a spacing, which would increase the weight of the plate and the heat conduction path.

[0036] An air injection assembly is provided inside the air injection hole 82. The air injection assembly includes an air injection nozzle 821, a sealing nut 822, and an elastic sealing ring 823. The outer wall of the air injection nozzle 821 is provided with an external thread, which is adapted to the internal thread of the inner wall of the air injection hole 82. The sealing nut 822 covers the opening outside the air injection nozzle 821. The elastic sealing ring 823 is sleeved on the outside of the air injection nozzle 821 and elastically abuts against the hole wall of the air injection hole 82.

[0037] An injection assembly is installed inside the injection port 82. The outer wall of the injection nozzle 821 is threadedly connected to the inner wall of the injection port 82, forming a first-level sealing structure to prevent internal gas from leaking out of the injection port 82. An elastic sealing ring 823 is fitted onto the outside of the injection nozzle 821 and elastically abuts against the wall of the injection port 82, forming a second-level sealing structure. The sealing nut 822 can be screwed onto the injection nozzle 821 to prevent gas leakage. During injection, the sealing nut 822 is unscrewed to inject gas into the internal cavity through the injection nozzle 821. After injection, the sealing nut 822 is screwed back onto the injection nozzle 821.

[0038] A novel composite thermal insulation and soundproofing board with a biomimetic honeycomb structure also includes an edge sealant layer 9. The edge sealant layer 9 extends circumferentially around the thermal insulation and soundproofing board, covering the end plate 1, the first buffer layer 2, the sound-absorbing layer 3, the sound-insulating layer 4, the second buffer layer 5, the first insulation layer 6, the second insulation layer 7, and the back plate 8. The edge sealant layer 9, covering the circumference of the thermal insulation and soundproofing board, not only creates a smooth, integrated surface around the board, effectively concealing interlayer seams and cavity edge gaps, thus visually enhancing the overall aesthetics and preventing uneven edges from affecting the decorative effect, but also provides a precise reference surface for installation. Simultaneously, when gaps appear between the adhesive layers on both sides of the second insulation layer 7, connecting to the outside, the edge sealant layer 9 prevents gas leakage. The edge sealant layer 9 maintains the smooth and aesthetically pleasing circumference of the board while ensuring installation accuracy and the overall airtightness of the thermal insulation and soundproofing system.

[0039] The edge sealant layer 9 is made of silicone structural sealant or polyurethane sealant. Both silicone structural sealant and polyurethane sealant materials can tightly wrap around and adhere to the circumferential surfaces of the end plate 1, the second insulation layer 7 and the back plate 8, effectively filling the tiny gaps between layers, and can adapt to the different material properties of the board without adhesion failure.

[0040] In the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of those different embodiments or examples.

[0041] 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 at least one of that feature. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0042] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any person skilled in the art can easily conceive of various variations or substitutions within the technical scope disclosed in this application, and these should all be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A novel composite thermal insulation and soundproofing board with a biomimetic honeycomb structure, characterized in that, include: The thermal insulation and sound insulation board includes an end plate (1), a second thermal insulation layer (7), and a back plate (8). The end plate (1), the second thermal insulation layer (7), and the back plate (8) are stacked sequentially along the wall thickness direction of the thermal insulation and sound insulation board. The second thermal insulation layer (7) has multiple cavities inside, which are distributed at intervals along the plane of the second thermal insulation layer (7) and extend along the wall thickness direction of the thermal insulation and sound insulation board. The thermal insulation and sound insulation board has air injection holes (82), and each cavity is connected to the air injection hole (82).

2. The novel composite thermal insulation and soundproofing board with a biomimetic honeycomb structure according to claim 1, characterized in that, The thermal insulation and soundproofing board also includes a first buffer layer (2), a sound-absorbing layer (3), a sound-insulating layer (4), a second buffer layer (5), and a first thermal insulation layer (6). The end plate (1), the first buffer layer (2), the sound-absorbing layer (3), the sound-insulating layer (4), the second buffer layer (5), the first thermal insulation layer (6), the second thermal insulation layer (7), and the back plate (8) are stacked sequentially along the wall thickness direction of the thermal insulation and soundproofing board.

3. The novel composite thermal insulation and soundproofing board with a biomimetic honeycomb structure according to claim 1, characterized in that, The back plate (8) has an air delivery groove (81) on the side near the second insulation layer (7). The air delivery groove (81) is recessed in a direction away from the second insulation layer (7) and connects the air injection hole (82) and the multiple cavities.

4. The novel composite thermal insulation and soundproofing board with a biomimetic honeycomb structure according to claim 1, characterized in that, The second insulation layer (7) has multiple air inlets, each of which is connected to two of the cavities.

5. A novel composite thermal insulation and soundproofing board with a biomimetic honeycomb structure according to claim 3 or 4, characterized in that, The air injection hole (82) is located on the back plate (8), or the air injection hole (82) is located on the second insulation layer (7).

6. The novel composite thermal insulation and soundproofing board with a biomimetic honeycomb structure according to claim 1, characterized in that, The cross-sectional inner contour of the cavity is a regular hexagon, with the distance between opposite sides of the regular hexagon being 40-50mm, and multiple regular hexagons arranged in a honeycomb array.

7. A novel composite thermal insulation and soundproofing board with a biomimetic honeycomb structure according to claim 1, characterized in that, The distance between adjacent cavities is 3-5 mm.

8. A novel composite thermal insulation and soundproofing board with a biomimetic honeycomb structure according to claim 1, characterized in that, An air injection assembly is provided inside the air injection hole (82). The air injection assembly includes an air injection nozzle (821), a sealing nut (822), and an elastic sealing ring (823). The outer wall of the air injection nozzle (821) is provided with an external thread, which is adapted to the internal thread of the inner wall of the air injection hole (82). The sealing nut (822) covers the opening outside the air injection nozzle (821). The elastic sealing ring (823) is sleeved on the outside of the air injection nozzle (821) and elastically abuts against the hole wall of the air injection hole (82).

9. A novel composite thermal insulation and soundproofing board with a biomimetic honeycomb structure according to claim 2, characterized in that, The novel composite thermal insulation and sound insulation board with a biomimetic honeycomb structure further includes an edge sealing layer (9), which extends circumferentially around the thermal insulation and sound insulation board. The end plate (1), the first buffer layer (2), the sound-absorbing layer (3), the sound-insulating layer (4), the second buffer layer (5), the first thermal insulation layer (6), the second thermal insulation layer (7), and the back plate (8) are all covered by the edge sealing layer (9).

10. A novel composite thermal insulation and soundproofing board with a biomimetic honeycomb structure according to claim 9, characterized in that, The edge sealant layer (9) is a silicone structural sealant or a polyurethane sealant.

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