Sound insulation wall

Abstract

The utility model discloses a sound insulation wall, which relates to the technical field of sound insulation and comprises two shock absorption and sound insulation plates and a wall frame, the two shock absorption and sound insulation plates are oppositely arranged, and an interval is arranged between the two shock absorption and sound insulation plates and is 10-70mm; 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 shock absorption and 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] This utility model relates to the field of sound insulation technology, and in particular to a soundproof wall. Background Technology

[0002] As living standards improve, people's demands for sound insulation in their homes are also increasing. However, the sound insulation effect is directly proportional to the thickness of the soundproof wall; thicker walls generally provide better sound insulation, but this also occupies more space, resulting in less usable floor space. In spaces with limited capacity, such as residences and offices, excessively thick soundproof walls may affect room layout and usable space, causing inconvenience to residents or users. In places like hotels where usable space is limited, thicker walls occupy a larger building area and increase costs.

[0003] Therefore, how to design a soundproof wall that is thin enough while still meeting sound insulation standards has become an urgent problem to be solved. Utility Model Content

[0004] The purpose of this utility model is to provide a soundproof wall to solve the problems existing in the prior art, so that the wall is thin enough and the sound insulation effect is still up to standard.

[0005] To achieve the above objectives, this utility model provides the following solution:

[0006] A soundproof wall includes two opposing vibration damping and sound insulation panels and a wall frame. The two opposing vibration damping and sound insulation panels have a gap of 10-70mm between them. The edges of the vibration damping and sound insulation panels are fixedly connected to the wall frame, and the two opposing vibration damping and sound insulation panels and the wall frame surround each other to form a sound insulation cavity.

[0007] The vibration damping and sound insulation panel includes an acoustic thin plate and a plurality of vibration dampers, the plurality of vibration dampers being fixed to the acoustic thin plate. At least a portion of the vibration dampers include a support member and a flexible membrane supported by the support member. The flexible membrane has a plurality of mass blocks or small pieces attached thereto. The vibration dampers, in combination with the acoustic thin plate, absorb the kinetic energy of the acoustic thin plate caused by sound transmission or vibration passing through it.

[0008] In one exemplary embodiment, the interval between the two vibration-damping and sound-insulating panels arranged opposite each other is 20-60 mm.

[0009] In one exemplary embodiment, the interval between the two vibration-damping and sound-insulating panels arranged opposite each other is 40 mm.

[0010] In one exemplary embodiment, wall panels are provided on both sides of the wall frame, and the wall panels at least completely cover the vibration damping and sound insulation board.

[0011] In an exemplary embodiment, a spacer block is provided between the oppositely arranged vibration damping and sound insulation panels, the thickness of the spacer block matching the size of the spacer.

[0012] In one exemplary embodiment, the vibration damping and sound insulation plate is provided with mesh plates on both sides.

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

[0014] In one exemplary embodiment, the sound insulation cavity is filled with sound-absorbing cotton, the sound-absorbing cotton has a cavity, and the spacer block is disposed in the cavity.

[0015] The present invention achieves the following technical advantages over the prior art:

[0016] By setting up two opposing vibration-damping and sound-insulating panels and a wall frame, the vibration-damping and sound-insulating panels include an acoustic thin plate and multiple vibration dampers. The multiple vibration dampers are fixed to the acoustic thin plate. At least part of the vibration dampers includes a support member and a flexible membrane supported by the support member. The flexible membrane has multiple mass blocks or small pieces attached thereto. The vibration dampers, combined with the acoustic thin plate, absorb the kinetic energy of the acoustic thin plate caused by sound transmission or vibration passing through it. The two opposing vibration-damping and sound-insulating panels are spaced 10-70mm apart, which greatly reduces the overall thickness of the soundproof wall while ensuring extremely high sound insulation effect. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the soundproof wall structure disclosed in a specific embodiment of the present utility model;

[0019] Figure 2 for Figure 1 A schematic diagram of the vibration damper in the medium-density vibration damping and sound insulation panel;

[0020] Figure 3 for Figure 1 Schematic diagram of the structure of the vibration damping and sound insulation panel;

[0021] Figure 4 A comparison chart of sound insulation test data between two vibration damping and sound insulation panels with and without a gap between them;

[0022] Figure 5A comparative chart of experimental data on sound insulation when the spacing between two vibration damping and sound insulation boards is 20mm, 40mm, and 60mm respectively;

[0023] Among them, 1. wall panel; 2. vibration damping and sound insulation board; 201. vibration damper; 202. support component; 203. flexible membrane; 204. small piece; 205. acoustic thin plate; 3. sound absorbing cotton; 4. spacer block; 5. wall frame. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Those skilled in the art can easily understand other advantages and effects of the present utility model from the content disclosed in this specification. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0025] It should be understood that the structures, proportions, sizes, etc., depicted in the accompanying drawings are merely for illustrative purposes to aid those skilled in the art and to facilitate understanding. They are not intended to limit the implementation of this utility model and therefore have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effectiveness and purpose of this utility model, should still fall within the scope of the technical content disclosed herein. In the description of this utility model, it should be understood that the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are merely for the convenience of describing this utility model 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 utility model. Furthermore, the terms "first," "second," and "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Therefore, features specified with "first," "second," etc., may explicitly or implicitly include one or more of those features. In the description of this utility model, unless otherwise stated, "multiple" means two or more.

[0026] It should also be noted that in the embodiments of this application, the same reference numerals are used to denote the same component or the same part.

[0027] The purpose of this invention is to provide a soundproof wall to solve the problems existing in the prior art, so that the wall is thin enough while still achieving the same sound insulation effect.

[0028] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0029] Please refer to Figures 1 to 5 This embodiment provides a soundproof wall, including two opposing vibration-damping and sound-insulating panels 2 and a wall frame 5. The two opposing vibration-damping and sound-insulating panels 2 are spaced apart by a distance of 10-70 mm. The edges of the vibration-damping and sound-insulating panels 2 are fixedly connected to the wall frame 5, and the two opposing vibration-damping and sound-insulating panels 2 and the wall frame 5 enclose each other to form a soundproof cavity. The vibration-damping and sound-insulating panel 2 includes an acoustic thin plate 205 and a plurality of vibration dampers 201. The plurality of vibration dampers 201 are fixed to the acoustic thin plate 205. At least a portion of the vibration dampers 201 includes a support member 202 and a flexible membrane 203 supported by the support member 202. The flexible membrane 203 has a plurality of mass blocks or small pieces 204 attached thereto. The vibration dampers 201, combined with the acoustic thin plate 205, absorb the kinetic energy of the acoustic thin plate 205 caused by sound transmission or vibration passing through it.

[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 to 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 granted and is patent number US8960365B2, and is incorporated herein by reference. In the construction of this application, the small piece 204 is specifically used as part of the shock absorber 201, which in turn serves 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 may be breathable.

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

[0032] Please refer to Figure 3 The vibration damping and sound insulation panel 2 includes an acoustic thin plate 205 having an array of vibration dampers 201 fixed to the acoustic thin plate 205. The vibration dampers 201 absorb energy as the acoustic thin plate 205 moves. As a non-limiting example, the vibration dampers 201 have their support member 202 ( Figure 2 It is fixed to the acoustic sheet 205 by adhesive; however, other attachment methods, such as rivets or expansion materials, may also be used.

[0033] For the sound absorption principle of the vibration damping and sound insulation board 2, please refer to another domestic utility model 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 damping and sound insulation panels 2 to achieve the spacing between the two vibration damping and sound insulation panels 2. The thickness of the spacer block 4 matches the size of the spacing.

[0035] Specifically, the vibration damping and sound insulation plate 2 has mesh plates on both sides to protect the acoustic thin plate 205 and the vibration damper 201. At the same time, it can also serve as a mounting component for the spacer block 4. By fixing the spacer block 4 to the two mesh plates opposite each other of the adjacent vibration damping and sound insulation plates 2, the spacer between the two vibration damping and sound insulation plates 2 is achieved.

[0036] In a preferred embodiment, the sound insulation cavity is filled with sound-absorbing cotton 3 to further improve the sound insulation effect. The sound-absorbing cotton 3 has a cavity, and a spacer block 4 is disposed within 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 damping and sound insulation board 2 to achieve complete enclosure of the wall.

[0038] In the structural components of this embodiment, the gap between the two vibration-damping and sound-insulating panels 2 is one of the core elements. The size of the gap between the two vibration-damping and sound-insulating panels 2 has a decisive influence on the sound insulation effect of the soundproof wall, and is based on solid experimental data.

[0039] Please refer to Figure 4 The X-axis represents frequency, and the Y-axis represents sound insulation TL (dB). The red line T2 represents the sound insulation data line when the two vibration damping and sound insulation panels 2 of sample 1 are completely attached without any gap; the green line T5 represents the sound insulation data line when the two vibration damping and sound insulation panels 2 are spaced 20mm apart; the blue line T8 represents the sound insulation data line when the two vibration damping and sound insulation panels 2 are spaced 40mm apart; and the purple line T11 represents the sound insulation data line when the two vibration damping and sound insulation panels 2 are spaced 60mm apart.

[0040] Please refer to Figure 5 The X-axis represents frequency, and the Y-axis represents sound insulation TL (dB). The red line TL4 is the sound insulation data line when the two vibration damping and sound insulation panels 2 of sample 2 are spaced 20mm apart; the green line TL8 is the sound insulation data line when the two vibration damping and sound insulation panels 2 are spaced 40mm apart; and the purple line TL12 is the sound insulation data line when the two vibration damping and sound insulation panels 2 are spaced 60mm apart.

[0041] Experimental data shows that the sound insulation spectrum of the soundproof wall exhibits different patterns when the spacing between the two vibration-damping and sound-insulating panels 2 is 20 mm, 40 mm, and 60 mm. Within a certain range, as the spacing between the two panels gradually increases, the sound insulation of the soundproof wall shows an upward trend. Specifically, when the spacing increases from 0 mm to 20 mm, a significant difference in sound insulation effect appears; when the height difference further increases from 20 mm to 40 mm, the sound insulation shows a significant jump compared to the case without spacing; and when increasing from 40 mm to 60 mm, although the sound insulation still improves, the rate of improvement gradually decreases.

[0042] Considering various factors, such as the difficulty of edge sealing and the potential for sound leakage from the sides, the optimal solution determined in this embodiment is that the overall structural thickness of the sound insulation panel is approximately 7 centimeters. The specific dimensions of a soundproof wall provided in this embodiment are as follows:

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

[0044] 2) Vibration damping and sound insulation board 22: 325*325*4.2 (9 pieces per side, 18 pieces 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 a frequency perspective, the sound insulation effect of soundproof walls differs in the low-frequency range and the high-frequency range above 500 Hz. In the low-frequency range, the sound insulation effect still improves to some extent with the increase of the spacing distance; in the high-frequency range 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 becomes gradual.

[0049] Experimental data also shows that the average sound insulation of this embodiment reaches 54 decibels. This value meets and exceeds the 50-decibel sound insulation requirement for partition walls stipulated by the Ministry of Housing and Urban-Rural Development. Compared with the sound insulation effect of the deep-bedroom apartment of the five-star Atour Hotel, which has a sound insulation of approximately 50 decibels, the sound insulation effect of this embodiment is superior to that of the industry leader, Atour Hotel. Moreover, this embodiment has a significant advantage in terms of thickness, with a thickness of only 7 centimeters. In contrast, the wall thickness of Atour Hotel is about 30 centimeters. Assuming that the thickness of a 5-meter-long wall is reduced by more than 20 centimeters, more than one square meter of space can be saved. Extending this to the entire building, the total amount of building area saved is astonishing. Saving wall space is equivalent to saving corresponding real estate costs, which has extremely high economic value.

[0050] In detail, the thickness of soundproof walls has a significant impact on a hotel's building area and cost. In first-tier cities like Beijing, Shanghai, and Guangzhou, due to high land costs, the building area of ​​a hotel directly relates to its development costs and operational efficiency. Increasing the thickness of soundproof walls reduces usable indoor space, thus affecting the number of guest rooms and the size of public areas.

[0051] The impact of soundproof wall thickness on building area

[0052] Space utilization: The thicker the soundproof wall, the more space it occupies, which is an important consideration for hotels with limited space. For example, if the thickness of the soundproof wall increases from 10 centimeters to 20 centimeters, the space available for guest rooms or other functional areas will decrease within the same total building area.

[0053] Number of guest rooms: Increasing the thickness of soundproof walls may lead to a decrease in the number of guest rooms. In first-tier cities, the number of guest rooms is often one of the key factors determining a hotel's profitability. Therefore, the choice of soundproof wall thickness needs to ensure sound insulation while minimizing the impact on the number of guest rooms.

[0054] Hotel room rates are typically related to factors such as location, facilities, and service quality. The thickness of soundproofing walls, as part of hotel facilities, also influences room rates. If soundproofing walls provide better sound insulation, hotels may raise prices to reflect the higher quality of accommodation offered.

[0055] In summary, the soundproof wall with a thickness that can be compressed to less than 10 centimeters provided in this embodiment can greatly save costs and improve economic efficiency.

[0056] Furthermore, this embodiment also boasts significant advantages in terms of weight. Each square meter of this embodiment weighs approximately 40 kilograms, a substantial reduction compared to the 600 kilograms per square meter of a cement wall, while achieving superior sound insulation. The cement manufacturing industry is a highly polluting and energy-intensive industry. For every square meter of cement wall replaced by this embodiment, carbon emissions are reduced by 60 kilograms, and electricity consumption is saved by 200 kilowatt-hours. If this were to replace 1 billion square meters of new floor space nationwide, it would reduce carbon emissions by 60 million tons, equivalent to the current annual carbon emissions of all gasoline-powered vehicles in China, and save 200 billion kilowatt-hours of electricity, equivalent to the annual power generation of 2.5 Three Gorges Dams. Therefore, this embodiment is a highly green and environmentally friendly building material.

[0057] Additionally, a regular board can be used in combination with a vibration damping and sound insulation board 2. When the two are spaced 45mm apart, 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 expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0059] If this utility model discloses or relates to mutually fixedly connected parts or structural components, then, unless otherwise stated, a fixed connection can be understood as: a detachable fixed connection (e.g., using bolts or screws), or a non-detachable fixed connection (e.g., riveting, welding). Of course, mutually fixed connections can also be replaced by an integral structure (e.g., manufactured using a casting process) (except where it is obviously impossible to use an integral forming process).

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

[0061] Any component provided by this utility model can be assembled from multiple individual components, or it can be a single component manufactured by a one-piece molding process.

[0062] Any adaptive changes made according to actual needs are within the protection scope of this utility model.

[0063] It should be noted that, for those skilled in the art, it is obvious that this utility model is not limited to the details of the above exemplary embodiments, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of this utility model is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0064] This utility model uses specific examples to illustrate its principles and implementation methods. The above description of the embodiments is only for the purpose of helping to understand the method and core idea of ​​this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the idea of ​​this utility model. In summary, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A soundproof wall, characterized in that: It includes two opposing vibration damping and sound insulation panels and a wall frame, with a gap of 10-70mm between the two opposing vibration damping and sound insulation panels; the edges of the vibration damping and sound insulation panels are fixedly connected to the wall frame, and the two opposing vibration damping and sound insulation panels and the wall frame surround each other to form a sound insulation cavity; The vibration damping and sound insulation panel includes an acoustic thin plate and a plurality of vibration dampers, the plurality of vibration dampers being fixed to the acoustic thin plate. At least a portion of the vibration dampers include a support member and a flexible membrane supported by the support member. The flexible membrane has a plurality of mass blocks or small pieces attached thereto. The vibration dampers, in combination with the acoustic thin plate, absorb the kinetic energy of the acoustic thin plate caused by sound transmission or vibration passing through it.

2. The soundproof wall according to claim 1, characterized in that: The spacing between the two vibration-damping and sound-insulating panels placed opposite each other is 20-60mm.

3. The soundproof wall according to claim 2, characterized in that: The spacing between the two vibration-damping and sound-insulating panels placed opposite each other is 40mm.

4. The soundproof wall according to claim 1, characterized in that: Wall panels are provided on both sides of the wall frame, and the wall panels at least completely cover the vibration damping and sound insulation board.

5. The soundproof wall according to any one of claims 1-4, characterized in that: Spacer blocks are provided between the oppositely arranged vibration damping and sound insulation panels, and the thickness of the spacer blocks matches the size of the spacer.

6. The soundproof wall according to claim 5, characterized in that: The vibration damping and sound insulation board is equipped with grid panels on both sides.

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

8. The soundproof wall according to claim 5, characterized in that: The sound insulation cavity is filled with sound-absorbing cotton, and the sound-absorbing cotton has a cavity, with the spacer block disposed within the cavity.

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