Sound insulation wall

Abstract

The invention discloses a sound insulation wall, and relates to the technical field of sound insulation, the sound insulation wall comprises two shock absorption and sound insulation plates which are oppositely arranged and a wall frame, and an interval is formed between the two shock absorption and sound insulation plates which are oppositely arranged and is 10-70 mm; the edges of the shock absorption and sound insulation plates are fixedly connected with the wall frame, and a sound insulation cavity is defined by the two shock absorption and sound insulation plates which are oppositely arranged and the wall frame; the shock-absorbing acoustic panel includes an acoustic sheet and a plurality of shock absorbers fixed to the acoustic sheet, the shock absorbers including a support and a flexible membrane supported by the support, the flexible membrane having a plurality of masses or patches attached thereto, the shock absorbers in combination with the acoustic sheet, the plurality of shock absorbers being coupled to the acoustic sheet. Kinetic energy of the acoustic sheet caused by sound transmission or vibrations through the acoustic sheet is absorbed. According to the sound insulation wall, the two shock absorption and sound insulation plates which are oppositely arranged and the wall frame are arranged, and the interval of 10-70 mm is formed between the two shock absorption and sound insulation plates which are oppositely arranged, so that the overall thickness of the sound insulation wall can be greatly reduced, and meanwhile the extremely high sound insulation effect can be guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of sound insulation, in particular to a sound insulation wall. Background Art

[0002] As the quality of life gets better and better, people's requirements for sound insulation in housing are also increasing. However, the sound insulation effect is proportional to the thickness of the sound insulation wall. The thicker the sound insulation wall, the better the sound insulation effect is usually, but this will take up more space. The thicker the wall, the less usable area of ​​the house. In some places with limited space, such as residences and offices, too thick sound insulation walls may affect the layout and usable space of the room, causing inconvenience to residents or users. In places such as hotels that have certain requirements for the usable area, the thicker the wall, the larger the building area occupied and the higher the cost.

[0003] Therefore, how to design a soundproof wall that is thin enough and has the same sound insulation effect becomes an urgent problem to be solved. Summary of the invention

[0004] The object of the present invention is to provide a soundproof wall to solve the problems existing in the above-mentioned prior art, so that the wall of the soundproof wall is thin enough and the sound insulation effect is also up to standard.

[0005] To achieve the above object, the present invention provides the following solutions:

[0006] A soundproof wall, comprising two oppositely arranged shock-absorbing and soundproofing boards and a wall frame, wherein a gap is provided between the two oppositely arranged shock-absorbing and soundproofing boards, and the gap is 10-70 mm; the edges of the shock-absorbing and soundproofing boards are fixedly connected to the wall frame, and the two oppositely arranged shock-absorbing and soundproofing boards and the wall frame surround a soundproof cavity;

[0007] The vibration-absorbing and sound-isolating panel comprises an acoustic thin plate and a plurality of vibration absorbers, wherein the plurality of vibration absorbers are fixed to the acoustic thin plate, and at least part of the vibration absorbers comprises a support and a flexible membrane supported by the support, wherein the flexible membrane has a plurality of mass blocks or small pieces attached thereto, wherein the vibration absorbers are combined with the acoustic thin plate to absorb the movement energy of the acoustic thin plate caused by sound transmission or vibration passing through the acoustic thin plate.

[0008] In an exemplary embodiment, the interval between the two oppositely arranged vibration-absorbing and sound-isolating panels is 20-60 mm.

[0009] In an exemplary embodiment, the interval between the two oppositely disposed vibration-absorbing and sound-isolating panels is 40 mm.

[0010] In an exemplary embodiment, wall panels are provided on both sides of the wall frame, and the wall panels at least completely cover the vibration-absorbing and sound-insulating panels.

[0011] In an exemplary embodiment, a spacer block is arranged between the oppositely arranged vibration-absorbing and sound-isolating panels, and the thickness of the spacer block matches the size of the spacer.

[0012] In an exemplary embodiment, mesh panels are provided on both sides of the vibration-absorbing and sound-isolating panel.

[0013] In an exemplary embodiment, the spacer block is fixedly connected to the grid plate.

[0014] In an exemplary embodiment, the sound insulation cavity is filled with sound-absorbing cotton, a cavity is opened on the sound-absorbing cotton, and the spacer block is arranged in the cavity.

[0015] Compared with the prior art, the present invention has achieved the following technical effects:

[0016] By setting two relatively arranged shock-absorbing and sound-insulating panels and a wall frame, the shock-absorbing and sound-insulating panels include an acoustic sheet and a plurality of shock absorbers, the plurality of shock absorbers are fixed to the acoustic sheet, at least part of the shock absorbers include a support and a flexible membrane supported by the support, the flexible membrane has a plurality of mass blocks or small pieces attached thereto, the shock absorbers are combined with the acoustic sheet to absorb the movement energy of the acoustic sheet caused by the transmission or vibration of sound passing through the acoustic sheet, and a spacing of 10-70 mm is provided between the two relatively arranged shock-absorbing and sound-insulating panels, so that the overall thickness of the soundproof wall can be greatly reduced, while ensuring an extremely high sound insulation effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 A schematic structural diagram of a sound insulation wall disclosed in a specific embodiment of the present invention;

[0019] Figure 2 for Figure 1 A schematic diagram of the structure of the shock absorber of the middle shock-absorbing sound insulation board;

[0020] Figure 3 for Figure 1 Schematic diagram of the structure of the middle vibration-absorbing and sound-isolating board;

[0021] Figure 4 This is a comparison chart of the experimental data of the sound insulation volume with and without a gap between two vibration-absorbing and sound-insulating panels;

[0022] Figure 5This is a comparison chart of experimental data of volume when the interval between two vibration-absorbing and sound-isolating panels is 20mm, 40mm, and 60mm respectively;

[0023] Among them, 1. wall panel; 2. shock-absorbing and sound-isolating board; 201. shock absorber; 202. support member; 203. flexible membrane; 204. small piece; 205. acoustic sheet; 3. sound-absorbing cotton; 4. spacer block; 5. wall frame. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. People familiar with the technology can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] It should be noted that the structures, proportions, sizes, etc. drawn in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions that the present invention can be implemented, so they have no technical substantive significance. Any structural modification, change in proportional relationship or adjustment of size, without affecting the effects that the present invention can produce and the purposes that can be achieved, should still fall within the scope of the technical content disclosed by the present invention. In the description of the present invention, it should be understood that the orientation or position relationship indicated by the terms "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance. Therefore, the features defined as "first", "second", etc. can explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0026] It should also be noted that in the embodiments of the present application, the same figure mark is used to represent the same component or the same part.

[0027] The purpose of the present invention is to provide a soundproof wall to solve the problems existing in the prior art, so that the wall of the soundproof wall is thin enough and the sound insulation effect is also up to standard.

[0028] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0029] Please refer to Figures 1 to 5 The present embodiment provides a soundproof wall, comprising two oppositely arranged shock-absorbing and soundproofing panels 2 and a wall frame 5, wherein there is a gap between the two oppositely arranged shock-absorbing and soundproofing panels 2, and the gap is 10-70 mm; the edges of the shock-absorbing and soundproofing panels 2 are fixedly connected to the wall frame 5, and the two oppositely arranged shock-absorbing and soundproofing panels 2 and the wall frame 5 surround and form a soundproof cavity. The shock-absorbing and soundproofing panels 2 comprise an acoustic sheet 205 and a plurality of shock absorbers 201, wherein the plurality of shock absorbers 201 are fixed to the acoustic sheet 205, and at least part of the shock absorbers 201 comprises a support 202 and a flexible membrane 203 supported by the support 202, wherein the flexible membrane 203 has a plurality of mass blocks or small pieces 204 attached thereto, wherein the shock absorbers 201 are combined with the acoustic sheet 205 to absorb the motion energy of the acoustic sheet 205 caused by the transmission or vibration of sound passing through the acoustic sheet 205.

[0030] For details, please refer to Figure 2 , the shock absorber 201 includes a support 202, a flexible membrane 203 and a mass or small piece 204. The flexible membrane 203 is mounted on the support 202, and the small piece 204 is fixed on the flexible membrane 203. The small piece 204 is similar to the small piece 204 or weight described in U.S. Patent US2014060962A1, which has been authorized and the patent number is US8960365B2, which is incorporated herein by reference. In the construction of the present application, the small piece 204 is particularly used as a part of the shock absorber 201, and the shock absorber 201 is used as a sound absorbing element. In a non-limiting example, the thickness of the flexible membrane 203 is less than 1 mm, and the flexible membrane 203 can be breathable.

[0031] The small piece 204 can be fixed to the membrane or can be hinged to the flexible membrane 203. In one non-limiting example, the small piece 204 is intentionally made into an asymmetrical shape in order to induce a "flapping" motion as described in US Patent US2014060962A1. The small piece 204 can be replaced by any other rigid or semi-rigid sheet having an asymmetrical shape.

[0032] Please refer to Figure 3 The vibration-absorbing and sound-isolating panel 2 includes an acoustic sheet 205 having an array of vibration absorbers 201 fixed to the acoustic sheet 205. The vibration absorbers 201 absorb energy when the acoustic sheet 205 moves. As a non-limiting example, the vibration absorbers 201 are arranged on their supports 202 ( Figure 2 ) is secured to the acoustic sheet 205 by adhesive; however, other attachment means, such as rivets or expansion materials, may also be used.

[0033] For the sound-absorbing principle of the vibration-absorbing and sound-isolating board 2, please refer to another domestic invention patent of the applicant with authorization announcement number CN106536189B, which is incorporated herein by reference.

[0034] Furthermore, a spacer block 4 is provided between the relatively arranged vibration-absorbing and sound-isolating panels 2, and the spacing between the two vibration-absorbing and sound-isolating panels 2 is achieved by the spacer block 4, and the thickness of the spacer block 4 matches the size of the spacing.

[0035] Specifically, mesh plates are arranged on both sides of the shock-absorbing and sound-insulating board 2 to protect the acoustic sheet 205 and the shock absorber 201, and can also be used as installation components of the spacer block 4. By fixing the spacer block 4 on two mesh plates opposite to the adjacent shock-absorbing and sound-insulating boards 2, the spacing between the two shock-absorbing and sound-insulating boards 2 is achieved.

[0036] As a preferred solution of this embodiment, the sound insulation cavity is filled with sound-absorbing cotton 3 to further improve the sound insulation effect. A cavity is opened on the sound-absorbing cotton 3, and the spacer block 4 is arranged in the cavity.

[0037] Wall panels 1 are provided on both sides of the wall frame 5. The wall panels 1 at least completely cover the vibration-absorbing and sound-insulating panels 2 to achieve complete encapsulation of the wall.

[0038] Among the structural elements of this embodiment, the interval between the two vibration-absorbing and sound-insulating panels 2 is one of the core elements. The size of the interval between the two vibration-absorbing and sound-insulating panels 2 has a decisive influence on the sound insulation effect of the soundproof wall, and there is solid experimental data as a basis.

[0039] Please refer to Figure 4 , the X-axis is frequency, the Y-axis is the volume insulation TL (dB), the red line T2 is the volume insulation data line when there is no gap between the two shock-absorbing and sound-insulating boards 2 of sample No. 1 and they are completely fitted together; the green line T5 is the volume insulation data line when the gap between the two shock-absorbing and sound-insulating boards 2 is 20mm; the blue line T8 is the volume insulation data line when the gap between the two shock-absorbing and sound-insulating boards 2 is 40mm; the purple line T11 is the volume insulation data line when the gap between the two shock-absorbing and sound-insulating boards 2 is 60mm.

[0040] Please refer to Figure 5 , the X-axis is frequency, the Y-axis is the volume insulation TL (dB), the red line TL4 is the volume insulation data line when the two shock-absorbing and sound-insulating boards 2 of sample No. 2 are spaced 20mm apart; the green line TL8 is the volume insulation data line when the two shock-absorbing and sound-insulating boards 2 are spaced 40mm apart; the purple line TL12 is the volume insulation data line when the two shock-absorbing and sound-insulating boards 2 are spaced 60mm apart.

[0041] From the experimental data, the sound insulation spectrum of the soundproof wall shows different changing patterns when the spacing is 20 mm, 40 mm, 60 mm, etc. Within a certain range of values, when the spacing distance between the two vibration-absorbing and sound-insulating panels 2 gradually increases, the sound insulation volume of the soundproof wall shows an upward trend. Specifically, when the spacing distance increases from 0mm to 20mm, there is a more obvious difference in the sound insulation effect; when the padding distance is further increased from 20mm to 40mm, the sound insulation volume has a significant leap compared to the case without spacing; and when it increases from 40mm to 60mm, although the sound insulation volume is still improved, the increase gradually decreases.

[0042] Taking into account various factors, such as the difficulty of edge sealing and possible side sound leakage, the optimal solution determined in this embodiment is that the overall structural thickness of the sound insulation board is about 7 cm. The specific dimensions of a sound insulation wall provided in this embodiment are as follows:

[0043] 1) Wall panel 11: 1100*1100*3;

[0044] 2) Shock-absorbing and sound-isolating panels 22: 325*325*4.2 (9 panels per side, 18 panels in total);

[0045] 3) Sound-absorbing cotton 33: 1060*1060*55.6;

[0046] 4) Spacer block 44: 60*60*55.5 (9 in total);

[0047] 5) Wall frame 55: 1100*1100*64.

[0048] From the perspective of frequency, the sound insulation effect of the soundproof wall is different in the low-frequency area and the high-frequency area above 500 Hz. In the low-frequency area, as the spacing distance increases, the sound insulation effect is still improved to a certain extent; in the high-frequency area above 500 Hz, when the spacing distance reaches a certain value (such as 40 mm and 60 mm), the improvement of the sound insulation effect in this frequency band gradually tends to be flat.

[0049] The experimental data also show that the average sound insulation of this embodiment reaches 54 decibels, which meets and exceeds the 50 decibel sound insulation requirement of the Ministry of Housing and Urban-Rural Development for household walls. It is compared with the sound insulation effect of the deep bedroom of the five-star hotel Atour Hotel, which has a sound insulation of about 50 decibels. The sound insulation effect of this embodiment is better than that of the industry leader Atour Hotel. Moreover, this embodiment has a significant advantage in thickness, with a thickness of only 7 cm. In comparison, the wall thickness of Atour Hotel is about 30 cm. Assuming that the thickness of a 5-meter-long wall is reduced by more than 20 cm, it can occupy more than one square meter of space. If it is expanded to the entire building, the total amount of building area that can be saved is amazing, and saving the wall area is equivalent to saving the corresponding real estate cost, which has extremely high economic value.

[0050] Specifically, the thickness of the soundproof wall has a significant impact on the hotel's floor area and cost. In first-tier cities such as Beijing, Shanghai and Guangzhou, due to the high cost of land, the hotel's floor area is directly related to its development cost and operating efficiency. The increase in the thickness of the soundproof wall will reduce the available indoor space, thus affecting the number of hotel rooms and the size of the public areas.

[0051] The influence of sound insulation wall thickness on building area

[0052] Space utilization: The thicker the sound insulation wall, the more space it takes up, which is an important consideration for hotels with limited space. For example, if the thickness of the sound insulation wall increases from 10 cm to 20 cm, then the space available for guest rooms or other functional areas will be reduced under the same total building area.

[0053] Number of guest rooms: An increase in the thickness of the soundproof wall may result in a decrease in the number of guest rooms. In first-tier cities, the number of hotel rooms is often one of the key factors that determine its profitability. Therefore, the thickness of the soundproof wall needs to be selected while ensuring the soundproof effect while minimizing the impact on the number of guest rooms.

[0054] Room Rate Data: The room rates of a hotel are usually related to factors such as its location, facilities and service quality. The thickness of the soundproofing wall, as part of the hotel's facilities, will also affect the room rate. If the soundproofing wall can provide better sound insulation, the hotel may increase the room rate to reflect the higher quality accommodation experience it provides.

[0055] In summary, the sound insulation wall provided in this embodiment, which can be compressed to a thickness of less than 10 cm, can save costs and improve economic benefits to a great extent.

[0056] In addition, this embodiment also has obvious advantages in terms of weight. The weight per square meter of this embodiment is about 40 kilograms. Compared with the cement wall of 600 kilograms per square meter, the weight is greatly reduced, but a more outstanding sound insulation effect is achieved. The cement manufacturing industry is a high-pollution and high-energy consumption industry. For every square meter of cement wall replaced by this embodiment, carbon emissions can be reduced by 60 kilograms and electricity can be saved by 200 kilowatt-hours. If 1 billion square meters of new floor space is replaced nationwide, carbon emissions can be reduced by 60 million tons, which is equivalent to the current annual carbon emissions of fuel vehicles nationwide, and 200 billion kilowatt-hours of electricity can be saved, which is equal to the annual power generation of 2.5 Three Gorges Hydropower Stations. Therefore, this embodiment is a highly green and environmentally friendly building material.

[0057] Additionally, a conventional board and a vibration-absorbing and sound-isolating board 2 may be used in combination. When the distance between the two is 45 mm, this combination can meet the sound insulation requirements of general indoor walls.

[0058] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0059] If the present invention discloses or involves components or structures that are fixedly connected to each other, then, unless otherwise stated, the fixed connection can be understood as: a detachable fixed connection (for example, connection using bolts or screws), and can also be understood as: a non-detachable fixed connection (for example, riveting, welding). Of course, the mutual fixed connection can also be replaced by an integrated structure (for example, manufactured by one-piece molding using a casting process) (except when it is obviously impossible to use an one-piece molding process).

[0060] In addition, unless otherwise stated, the terms used to indicate positional relationships or shapes in any of the technical solutions disclosed in the present invention include states or shapes that are approximate, similar, or close to them.

[0061] Any component provided by the present invention may be assembled from a plurality of separate components, or may be a separate component manufactured by an integral forming process.

[0062] Adaptive changes made according to actual needs are all within the protection scope of the present invention.

[0063] It should be noted that it is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention. Any reference numerals in the claims should not be regarded as limiting the claims involved.

[0064] The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core ideas of the present invention. At the same time, for those skilled in the art, according to the ideas of the present invention, there will be changes in the specific implementation methods and application scopes. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A sound insulation wall, characterized in that: It comprises two oppositely arranged vibration-absorbing and sound-insulating panels and a wall frame, wherein there is a gap between the two oppositely arranged vibration-absorbing and sound-insulating panels, and the gap is 10-70 mm; the edges of the vibration-absorbing and sound-insulating panels are fixedly connected to the wall frame, and the two oppositely arranged vibration-absorbing and sound-insulating panels and the wall frame surround to form a sound insulation cavity; The vibration-absorbing and sound-isolating panel comprises an acoustic thin plate and a plurality of vibration absorbers, wherein the plurality of vibration absorbers are fixed to the acoustic thin plate, and at least part of the vibration absorbers comprises a support and a flexible membrane supported by the support, wherein the flexible membrane has a plurality of mass blocks or small pieces attached thereto, wherein the vibration absorbers are combined with the acoustic thin plate to absorb the movement energy of the acoustic thin plate caused by sound transmission or vibration passing through the acoustic thin plate.

2. The sound insulation wall according to claim 1, characterized in that: The interval between the two vibration-absorbing and sound-isolating panels arranged opposite to each other is 20-60 mm.

3. The sound insulation wall according to claim 2, characterized in that: The interval between the two vibration-absorbing and sound-isolating panels arranged opposite to each other is 40 mm.

4. The sound insulation wall according to claim 1, characterized in that: Both sides of the wall frame are provided with wall panels, and the wall panels at least completely cover the vibration-absorbing and sound-insulating panels.

5. The sound insulation wall according to any one of claims 1 to 4, characterized in that: A spacer block is arranged between the vibration-absorbing and sound-isolating plates that are arranged opposite to each other, and the thickness of the spacer block matches the size of the spacer.

6. The sound insulation wall according to claim 5, characterized in that: Grid panels are arranged on both sides of the vibration-absorbing and sound-isolating panel.

7. The sound insulation wall according to claim 6, characterized in that: The spacer block is fixedly connected to the grid plate.

8. The sound insulation wall according to claim 5, characterized in that: The sound insulation cavity is filled with sound-absorbing cotton, a cavity is opened on the sound-absorbing cotton, and the spacer block is arranged in the cavity.

Images