CN220486789U - Green sound absorption device - Google Patents

Abstract

The utility model aims to provide a green sound absorbing device, which solves the problem that a sound absorbing layer is noise-reduced and prevents the sound from entering the soil, and comprises a vegetation layer, a sound absorbing layer and a root system layer, wherein the vegetation layer is arranged on the sound absorbing layer, the sound absorbing layer is arranged on the root system layer, the sound absorbing layer comprises a plurality of sound absorbing units, the sound absorbing units are uniformly arranged on the sound absorbing layer, the resonance neck is communicated with a sound channel, the cross section size of the resonance cavity is larger than that of the resonance neck, and the sound absorbing layer is added between the vegetation layer and the root system layer on a green roof or wall, so that the vegetation layer, the root system layer and the vegetation layer together complete sound absorption and noise reduction, the sound absorbing layer is positioned between the vegetation layer and the root system layer, roots of the vegetation take root system layer through the sound channel, and the soil does not fall into the resonance cavity and the resonance neck in the sound absorbing layer, so that the problem that the sound absorbing layer is noise-reduced and the soil is prevented from entering the soil is solved.

Description

Green sound absorption device

Technical Field

The utility model relates to the field of noise control, in particular to a green sound absorption device.

Background

Urban noise pollution is one of the most important environmental pollution facing the modern society, traffic noise is one of key environmental factors affecting the physiological and psychological health of people, and the noise not only can interfere with the rest and sleep of people, reduce the working efficiency, destroy buildings and equipment, but also can cause different degrees of damage to the physiological and psychological health of people.

Although the conventional urban noise control method can play a remarkable role in a certain range, in some common special cases, such as multiple reflections of noise in aircraft noise and narrow streets, the noise cannot be effectively controlled.

In the future development direction of China in green, low-carbon and healthy buildings, one of important means for realizing green buildings in green roofs can improve urban ecological environment, reduce building energy consumption, reduce flood disasters, create good visual environment and play a role in sound absorption and noise reduction at medium and high frequencies.

Patent publication number CN114412077a discloses a green roof and a building, which utilizes a vegetation layer to be planted in a soil layer, wherein the soil layer is on a low-frequency sound absorption structural layer, and the low-frequency sound absorption structural layer is provided with a resonance structure, if raining, water and soil loss is caused, the resonance cavity and the through channels are blocked by soil in the corresponding soil layer, the effect of reducing noise is poorer and worse correspondingly, and meanwhile, the structural requirement on the low-frequency sound absorption structural layer is high, and the soil and vegetation with certain weight can be born.

Therefore, with respect to the deficiencies of the prior art, how to prevent the low frequency sound absorbing construction layer from entering the soil under the premise of ensuring noise reduction is a problem to be solved.

Disclosure of Invention

The utility model aims to provide a green sound absorption device, which solves the problem that a sound absorption layer is noise-reduced and prevented from entering soil.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a green sound absorption device which comprises a vegetation layer, a sound absorption layer and a root system layer, and is characterized in that the vegetation layer is arranged on the sound absorption layer, the sound absorption layer is arranged on the root system layer, the sound absorption layer comprises a plurality of sound absorption units, the sound absorption units are uniformly arranged on the sound absorption layer, sound channels are formed between adjacent sound absorption units, each sound absorption unit comprises a resonant cavity and a resonant neck, the resonant cavity is communicated with the resonant neck, and the resonant neck is communicated with the sound channels.

Alternatively, the sound absorbing units extend in the vertical direction to form a plurality of layers of connected sound absorbing units.

Optionally, a filter layer is arranged at the bottom of the root system layer, and the root system layer is wrapped by the filter layer.

Further, the filter layer bottom is provided with the drainage layer, there is the recess on the drainage layer, the recess is located drainage layer upper surface and lower surface, the filter layer laminating is in the drainage layer.

Further, a structural layer is provided at the bottom of the drainage layer, the structural layer supporting the drainage layer.

Further, a waterproof layer is provided on the structural layer, the waterproof layer being located between the structural layer and the drainage layer.

Optionally, the thickness of the root layer is 10-50mm, the thickness of the sound absorption layer is 45-49mm, and the width of the sound channel is 15-25mm.

Optionally, the length of the resonant cavity in the thickness direction is 10-15mm, the dimension of the resonant cavity in the width direction is 55-65mm, the dimension of the resonant neck in the thickness direction is 2-4mm, the dimension of the resonant neck in the width direction is 12-18mm, and the distance between the centers of adjacent sound absorption units is 12-18mm.

Due to the application of the technical scheme, compared with the prior art, the utility model has the following advantages:

according to the green sound absorption device, the sound absorption layer is added between the vegetation cover layer and the root system layer on the green roof or the wall, so that sound absorption and noise reduction are completed together with the root system layer and the vegetation layer, the sound absorption layer is positioned between the vegetation layer and the root system layer, roots of vegetation root through the sound channel root system layer, and the problem that soil falls into a resonant cavity and a resonant neck in the sound absorption layer from the vegetation layer is avoided, so that the problem that the sound absorption layer reduces noise and avoids entering the soil is solved.

Drawings

Some specific embodiments of the utility model will be described in detail hereinafter by way of example and not by way of limitation with reference to the accompanying drawings. The same reference numbers will be used throughout the drawings to refer to the same or like parts or portions. It will be appreciated by those skilled in the art that the drawings are not necessarily drawn to scale. In the accompanying drawings:

fig. 1 is a schematic view of the construction layers of a green sound absorbing device according to a preferred embodiment of the present utility model;

FIG. 2 is a schematic view of the sound absorbing layer of FIG. 1;

fig. 3 is an enlarged view of the drainage layer.

Wherein reference numerals are as follows:

1. a vegetation layer;

2. a sound absorbing layer;

21. a sound absorption unit;

211. a resonant cavity;

212. a resonant neck;

3. a root system layer;

4. a sound channel;

5. a filter layer;

6. a drainage layer;

7. a waterproof layer;

8. and (5) constructing a layer.

Detailed Description

The following description of the embodiments of the present utility model will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the utility model are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In addition, the technical features of the different embodiments of the present utility model described below may be combined with each other as long as they do not collide with each other.

As shown in fig. 1 and 2, the plant root system comprises a vegetation layer 1, a sound absorption layer 2 and a root system layer 3, wherein the downward root of the vegetation layer 1 passes through the periphery of the sound absorption layer 2, then the root of the vegetation layer 1 enters the root system layer 3, the root system layer 3 is used for the root tying of the vegetation layer 1, so that the root system layer 3 can be a layer of soil or sand, plants of some vegetation layers 1 can survive only by sand, and the corresponding roots of the plants can survive in the sand.

The vegetation layer 1 is arranged on the sound absorption layer 2, and the vegetation layer 1 is not grown on the sound absorption layer 2, the sound absorption layer 2 is arranged on the root system layer 3, and roots of the vegetation layer 1 are rooted in the root system layer 3 downwards from the side wall of the sound absorption layer 2.

The sound absorption layer 2 comprises a plurality of sound absorption units 21, the sound absorption units 21 are uniformly arranged on the sound absorption layer 2, the distances between the corresponding adjacent sound absorption units 21 are equal, sound channels 4 are formed between the adjacent sound absorption units 21, the space is further formed, partial roots of the vegetation layer 1 are rooted downwards in the root system layer 3 from the sound channels 4, most of the roots of the vegetation layer 1 are rooted in the root system layer 3 from the space, after the sound wave signals such as external noise pass through vegetation, the sound wave signals of low frequency are effectively attenuated through the sound absorption layer 2, then the sound wave signals are transmitted into and effectively attenuated through the root system layer 3, and the middle and high frequency sound wave signals are effectively attenuated, so that the noise reduction effect is achieved.

The sound absorbing unit 21 includes a resonance chamber 211 and a resonance neck 212, the resonance chamber 211 communicates with the resonance neck 212, and the resonance neck 212 communicates with the vocal tract 4.

The resonance cavity 211 and the resonance neck 212 form a helmholtz resonator, helmholtz resonance sound absorption can be achieved, when an acoustic wave signal is transmitted into and passes through the sound channel 4, air pressure in the sound channel 4 changes, the air pressure in the sound channel 4 changes to trigger air in the resonance neck 212 in the sound absorption unit 21 communicated with the sound channel to perform vibratory motion, when the frequency of the acoustic wave signal reaches or approaches the resonance frequency of the sound absorption unit 21, the motion direction of the acoustic wave signal in the resonance neck 212 is opposite to the motion direction of the acoustic wave signal in the sound channel 4, and a negative equivalent elastic modulus effect is further generated, so that the acoustic wave signal is obviously attenuated, namely the effect of noise reduction of the sound absorption layer 2 is achieved, and the sound absorption layer 2 is low-frequency noise reduction.

The sound absorbing units 21 extend in the vertical direction to form a plurality of connected sound absorbing units 21, and since there is a plurality of sound absorbing units 21 uniformly distributed and this is only one layer of sound absorbing units 21, there are two layers of sound absorbing units 21 or multiple layers of sound absorbing units 21, and it is the sound absorbing units 21 extend in the vertical direction, and in the present utility model, a plurality of sound absorbing units 21 may form a matrix.

The root system layer 3 bottom is provided with filter layer 5, and filter layer 5 parcel root system layer 3, if have too much liquid in the root system layer 3, then too much liquid will spill, and correspondingly the liquid that spills can carry earth to come out together, so filter layer 5 parcel root system layer 3, the bottom and the enclosing wall of filter layer 5 parcel root system layer 3 only stay the table and do not wrap up by filter layer 5, and filter layer 5 can filter earth grit, also can protect the soil in the root system layer 3 not run off, and filter layer 5 adopts the filter screen.

The drainage layer 6 bottom is provided with structural layer 8, and structural layer 8 supports drainage layer 6, and structural layer 8 is equivalent to the frame, and structural layer 8 all are in the frame more than, are equivalent to vegetation layer 1, acoustic absorption layer 2, root system layer 3, filter layer 5, drainage layer 6 all in structural layer 8 same department, and structural layer 8 can hang in the wall outside, also can fix on the roof, and structural layer 8 can carry all parts on it and move together.

The waterproof layer 7 is arranged on the construction layer 8, the waterproof layer 7 is positioned between the construction layer 8 and the drainage layer 6, because one surface of the construction layer 8 is always close to a roof or a wall, and liquid possibly exists in the root system layer 3, the liquid in the root system layer 3 is prevented from penetrating the roof or the wall, the waterproof layer 7 can adopt acrylic waterproof paint or polyurethane waterproof paint, so that the liquid in the root system layer 3 can not leak out of the construction layer 8, and the waterproof layer 7 can be smeared on the construction layer 8.

The thickness of the root layer 3 is 18-25mm, and the width of the sound channel 4 is 15-25mm (d in the figure).

The length of the resonance cavity 211 in the thickness direction is 10-15mm (a in the figure), the dimension of the resonance cavity 211 in the width direction is 55-65mm (b in the figure), the dimension of the resonance cavity 211 is not identified, and corresponds to the length, the dimension of the resonance neck 212 in the thickness direction is 2-4mm (c in the figure), the dimension of the resonance neck 212 in the width direction is 12-18mm (h in the figure), and the distance between adjacent centers of the sound absorption units 21 is 12-18mm (l in the figure), and the dimension of the resonance neck 212 is not identified, corresponds to the length.

As shown in fig. 3, the bottom of the filtering layer 5 is provided with a drainage layer 6, and since the device is usually arranged on a roof or a wall, the liquid filtered by the filtering layer 5 is drained through the drainage layer 6, otherwise the filtered liquid may permeate the roof or the wall, the drainage layer 6 is provided with grooves 61, the grooves 61 are positioned on the upper surface and the lower surface of the drainage layer 6, and the grooves 61 penetrate the upper surface and the lower surface of the grooves 61.

The grooves 61 may be provided in plurality, the distances between adjacent grooves 61 are equal, and the grooves 61 are V-shaped.

The sound absorption coefficient in the utility model is in the range of 300Hz-1000Hz, and can reach more than 0.5.

The above embodiments are only for illustrating the technical concept and features of the present utility model, and are intended to enable those skilled in the art to understand the present utility model and to implement the same, but are not intended to limit the scope of the present utility model, and all equivalent changes or modifications made according to the spirit of the present utility model should be included in the scope of the present utility model.

Claims (8)

1. The utility model provides a green sound absorbing device, includes vegetable layer (1), sound absorbing layer (2) and root system layer (3), its characterized in that, vegetable layer (1) set up on sound absorbing layer (2), sound absorbing layer (2) set up on root system layer (3), sound absorbing layer (2) include a plurality of sound absorbing unit (21), a plurality of sound absorbing unit (21) evenly set up on sound absorbing layer (2), form sound channel (4) between adjacent sound absorbing unit (21), sound absorbing unit (21) include resonant cavity (211) and resonance neck (212), resonant cavity (211) with resonance neck (212) are linked together, resonance neck (212) with sound channel (4) are linked together.

2. The green sound absorbing device according to claim 1, characterized in that the sound absorbing units (21) extend in the vertical direction forming a multi-layered connected sound absorbing unit (21).

3. The green sound absorbing device according to claim 1, characterized in that a filter layer (5) is arranged at the bottom of the root system layer (3), the filter layer (5) wrapping the root system layer (3).

4. A green sound absorbing device according to claim 3, characterized in that the bottom of the filter layer (5) is provided with a drainage layer (6), the drainage layer (6) is provided with a groove (61), the groove (61) is located on the upper surface and the lower surface of the drainage layer (6), and the filter layer (5) is attached to the drainage layer (6).

5. The green sound absorbing device according to claim 4, characterized in that a construction layer (8) is provided at the bottom of the drainage layer (6), which construction layer (8) supports the drainage layer (6).

6. The green sound absorbing device according to claim 5, characterized in that a waterproof layer (7) is provided on the construction layer (8), the waterproof layer (7) being located between the construction layer (8) and the drainage layer (6).

7. The green sound absorbing device according to claim 1, characterized in that the thickness of the root layer (3) is 10-50mm, the thickness of the sound absorbing layer (2) is 45-49mm, and the width of the sound channel (4) is 15-25mm.

8. The green sound absorbing device according to claim 1, wherein the length of the resonance chamber (211) in the thickness direction is 10-15mm, the dimension of the resonance chamber (211) in the width direction is 55-65mm, the dimension of the resonance neck (212) in the thickness direction is 2-4mm, the dimension of the resonance neck (212) in the width direction is 12-18mm, and the distance between the centers of adjacent sound absorbing units (21) is 12-18mm.