CN106705403A - Silencing structure and air conditioner with same - Google Patents

Abstract

The invention relates to a noise reduction structure, comprising: a first panel; a second panel, the second panel is connected with the first panel, and an accommodation space is formed between the second panel and the first panel; structure, the filling structure is arranged in the accommodating space and can be used for noise reduction, and the filling structure sequentially includes a first foam layer, a first foam layer, A strengthening layer and a second foam layer, the strengthening layer is a layer of noise-reducing material. It also relates to an air conditioner with the sound attenuation structure. The filling structure compounded by the three-layer structure is beneficial to improve the sound-absorbing and thermal insulation performance of the sound-absorbing structure, reduce the thickness of the sound-absorbing structure, and reduce transportation and installation costs; and the sound-absorbing structure can be directly used as an air conditioning unit The wall panels enable the air-conditioning unit to form a complete sound-absorbing structure, which is conducive to enhancing the mute effect of the air-conditioning unit.

Description

A sound-absorbing structure and an air conditioner with the same

technical field

The invention relates to the technical field of air conditioning, in particular to a sound-absorbing structure and an air conditioner with the sound-absorbing structure.

Background technique

Large-scale air-conditioning units have high cooling or heating capacity and large air volume. Generally, large-scale air-conditioning units use high-power fans, motors, compressors and other components. During operation, due to the influence of factors such as transmission friction and resonance of various components with high power, the air conditioning unit usually produces relatively large noise.

In some large-scale projects, in order to achieve the effect of noise reduction, sound-absorbing panels are usually installed on the four walls of the unit. Due to the different sizes and structures of the four walls of different units, the operation of attaching the sound-absorbing panels usually requires a lot of manpower, and the production and assembly efficiency is low. Moreover, for the bottom wall of the air-conditioning unit and other wall panels of the air-conditioning unit that are blocked or hindered by internal components, the operation of attaching the sound-absorbing panels is difficult to implement, resulting in the inability to form a complete sound-absorbing and noise-reducing structure on the entire periphery of the air-conditioning unit, making the noise reduction not effectively. In addition, the mounted sound-absorbing panels occupy limited space inside the air-conditioning unit, which is not conducive to improving the cleanliness and aesthetics of the interior design of the air-conditioning unit. Another method to reduce the noise of the air conditioner unit is to add a sound-absorbing section in the air-conditioner unit and install a special sound-absorbing device to reduce the overall operating noise of the air-conditioner unit.

Contents of the invention

In order to solve the above-mentioned problems in the prior art, the present invention provides a sound attenuation structure and an air conditioner with the sound attenuation structure. The purpose is to provide an air conditioner sound-absorbing structure that can be directly used as the wall plate of the air-conditioning unit and has stronger noise-reducing ability.

The technical scheme adopted in the present invention is:

A sound-absorbing structure, comprising:

first panel;

a second panel, the second panel is connected to the first panel, and an accommodation space is formed between the second panel and the first panel;

A filling structure, the filling structure is arranged in the accommodating space and can be used for noise reduction, and the filling structure includes a first foam layer sequentially from the side of the first panel to the side of the second panel , a strengthening layer and a second foam layer, the strengthening layer is a layer of noise-reducing material.

Preferably, the reinforcing layer is made of porous sound-absorbing material, and the sound-absorbing coefficient of the reinforcing layer is greater than the sound-absorbing coefficient of the first foam layer and the sound-absorbing coefficient of the second foam layer.

Preferably, the reinforcement layer is a polyurethane fiber sound-absorbing board or a plant fiber sound-absorbing board.

Preferably, the thicknesses of the first foam layer, the reinforcement layer and the second foam layer decrease successively.

Preferably, the thickness ratio of the first foam layer, the strengthening layer and the second foam layer is (2.5-3):1.5:(0.5-1).

Preferably, both the first panel and the second panel are U-shaped plate structures, the U-shaped opening of the first panel and the U-shaped opening of the second panel are oppositely arranged, and the second panel It can be covered on the outside of the first panel; the first panel and the second panel jointly form a hollow plate-shaped structure with the accommodation space and openings at both ends.

Preferably, it also includes a first installation partition and a second installation partition;

The first installation partition is arranged between the reinforcement layer and the first foam layer for separating the reinforcement layer and the first foam layer;

The second installation spacer is disposed between the reinforcement layer and the second foam layer for separating the reinforcement layer and the second foam layer.

Preferably, both the first installation partition and the second installation partition are hot-dip galvanized sheets, or hot-dip galvanized sheets coated with a sound-absorbing plant fiber layer on at least one side.

Preferably, when the first panel is the U-shaped plate-shaped structure, the opposite side walls of the first panel are provided with first a chute, the first installation partition is slidably connected to the first panel through the first chute;

The opposite side walls of the first panel are provided with a second chute compatible with the second installation partition, and the second installation partition is connected to the second installation partition through the second chute. The first panel is slidingly attached.

An air conditioner, including the sound attenuation structure.

The beneficial effects of the present invention are:

1. The structure of the sound-absorbing structure is simple, and the manufacturing cost is low. It can directly replace any wall surface in the casing of the existing air-conditioning unit, so that a complete sound-absorbing structure can be formed outside the air-conditioning unit, thereby improving the noise-reducing effect of the air-conditioning unit. ; There is no need to mount the sound-absorbing plate on the shell wall of the air-conditioning unit, which is beneficial to simplify the assembly steps, reduce labor costs, and avoid the installed sound-absorbing plate from occupying the internal use space of the air-conditioning unit, improving the cleanliness of the internal design of the air-conditioning unit and aesthetics.

2. The filling structure includes a first foam layer, a second foam layer and a strengthening layer sandwiched between them. Compared with the existing foam boards used for sound absorption and noise reduction, the three-layer composite filling structure It is beneficial to improve the sound-absorbing performance of the sound-absorbing structure, reduce the thickness of the sound-absorbing structure, thereby reducing the overall volume and weight of the air-conditioning unit with the sound-absorbing structure, and reduce transportation costs.

Description of drawings

Fig. 1 is a three-dimensional structural schematic diagram of the sound-absorbing structure of the present invention;

Fig. 2 is the front view of the noise reduction structure of the present invention;

Fig. 3 is an enlarged view of the local structure at A of the sound-absorbing structure of the present invention.

In the figure: 1, the first panel; 11, the first chute; 12, the second chute; 2, the second panel; 3, the filling structure; 31, the first foam layer; 32, the reinforcement layer; 33, the second The second foam layer; 4. The first installation partition; 5. The second installation partition; 6. Sponge.

detailed description

In order to further explain the technical means and functions adopted by the present invention to achieve the predetermined purpose, the specific implementation, structure, features and functions of the application according to the present invention will be described in detail below in conjunction with the accompanying drawings and preferred embodiments. In the following description, particular features, structures, or characteristics of one or more embodiments may be combined in any suitable manner.

As shown in Figures 1-3, this specific embodiment relates to a sound-absorbing structure, including:

firstpanel1;

A second panel 2, the second panel 2 is connected to the first panel 1, and an accommodation space is formed between the second panel 2 and the first panel 1;

A filling structure 3, the filling structure 3 is arranged in the accommodating space and can be used for noise reduction, the filling structure 3 sequentially includes from the first panel 1 side to the second panel 2 side The first foam layer 31 , the reinforcement layer 32 and the second foam layer 33 , the reinforcement layer 32 is a noise reduction material layer. Both the first foam layer 31 and the second foam layer 33 are made of foam materials, and a large number of tiny hole structures are densely arranged therein. Both the first foam layer 31 and the second foam layer 33 have functions of sound absorption and heat preservation. Both the first panel 1 and the second panel 2 are preferably made of sheet metal material.

Compared with single-layer sound-absorbing panels, the sound-absorbing structure with multi-layer composite structure has better noise reduction effect. In use, one of the first panel 1 and the second panel 2 is set facing the components inside the air conditioning unit that generate noise, while the other is set facing the external environment. Taking the noise source where the first panel 1 is facing the interior of the air conditioning unit as an example, when the noise reaches the first panel 1, part of the noise is reflected by the first panel 1 and returned to the interior of the air conditioning unit to reduce the noise intensity , the remaining part of the noise penetrates the first panel 1 and enters the first foam layer 31, the sound waves rub against a large number of hole structures in the first foam layer 31, and part of the sound energy is converted into heat energy and lost. Thereby further reducing the noise intensity.

Afterwards, the sound waves that are not completely absorbed reach the reinforcement layer 32, which is a layer of noise-reducing material. material. That is, the strengthening layer 32 itself can have the ability to attenuate the sound wave intensity or reflect the sound wave. When the strengthening layer 32 attenuates the sound wave intensity, the noise intensity after passing through the strengthening layer 32 is further reduced; The reinforcement layer 32 reflects a large amount of sound waves back to the first foam layer 31 , so that the sound waves can be absorbed by the first foam layer 31 again, and the noise intensity passing through the reinforcement layer 32 can also be effectively reduced. Preferably, the reinforcing layer 32 is made of porous sound-absorbing material, and the sound-absorbing coefficient of the reinforcing layer 32 is greater than the sound-absorbing coefficient of the first foam layer 31 and the sound-absorbing coefficient of the second foam layer 33 . The setting of the reinforcement layer 32 with strong sound absorption capacity is beneficial to reduce the overall thickness of the filling structure 3, making the volume of the sound-absorbing structure smaller, making assembly more convenient, and reducing the occupied space of the air-conditioning unit. Reduce shipping costs. The reinforced layer 32 arranged in a porous structure can also have a good thermal insulation effect, so that the filling structure 3 has a better thermal insulation performance than the existing foam sound-absorbing board. , can significantly improve the energy efficiency of the unit, and greatly improve the cooling effect under the same energy consumption. Further preferably, the reinforcing layer 32 is a polyurethane fiber sound-absorbing board or a plant fiber sound-absorbing board.

The noise passing through the reinforcement layer 32 enters the second foam layer 33 , and the sound absorption principle of the second foam layer 33 is the same as that of the first foam layer 31 . After the absorption, the noise that has not been completely attenuated reaches the second panel 2, and the second panel 2 can also reflect part of the sound waves back to the second foam layer 33 for secondary absorption. Through the multiple noise reduction functions of the first panel 1, the filling structure 3 having a three-layer composite structure, and the second panel 2, the intensity of noise passing through the sound-absorbing structure can be greatly reduced, so that The sound attenuation structure has good noise reduction ability.

As a preferred embodiment, in the filling structure 3, the material layer that is first in contact with the noise is designed to have the largest thickness, so that the noise with higher intensity can be absorbed in the first foam layer 31. effective attenuation. With the first panel 1 facing the noise source inside the air-conditioning unit, with the second panel 2 facing the external environment, the first foam layer 31, the reinforcing layer 32 and the second foam layer The thickness of 33 decreases successively. Preferably, the thickness ratio of the first foam layer 31 , the strengthening layer 32 and the second foam layer 33 is (2.5-3):1.5:(0.5-1).

As a preferred embodiment, both the first panel 1 and the second panel 2 are U-shaped plate structures, the U-shaped opening of the first panel 1 and the U-shaped opening of the second panel 2 The openings are oppositely arranged, and the second panel 2 can be set on the outside of the first panel 1; more specifically, the first panel 1 includes a first flap, a first body and a second flap connected in sequence. plate, the first folded plate, the first main body and the second folded plate form a U-shaped plate structure; the second panel 2 includes the third folded plate, the second main body and the fourth folded plate connected in sequence, and the The third folded plate, the second main body and the fourth folded plate also form a U-shaped plate structure. When the second panel 2 is covered on the outside of the first panel 1, the third folded plate is arranged parallel to the first folded plate, and the third folded plate is arranged on the first folded plate. On the outside of the board, a gap is formed between the third folded plate and the first folded plate, and the sponge 6 or bonding material can be filled in the gap. The fourth folded plate is arranged in parallel with the second folded plate, and the fourth folded plate is arranged outside the second folded plate, and the fourth folded plate and the second folded plate are formed The void is also filled with sponge 6 or bonding material. At this time, the first panel 1 and the second panel 2 surround and form a hollow plate-shaped structure with two ends open, and the hollow cavity inside the hollow plate-shaped structure is the accommodating space. It should be noted that the term "open at both ends" here means that the two opposite ends of the hollow plate-like structure are not shielded and form an opening structure communicating with the accommodating cavity. The openings at both ends can be used to pour foam material into the accommodating cavity and both sides of the reinforcing layer 32, so as to directly form the first foaming layer 31 and the second foaming layer 31 in the accommodating space. The foam layer 33 avoids the operation of processing and assembling the first foam layer 31 and the second foam layer 33 , which is beneficial to simplify the processing procedure of the sound-absorbing structure, save material costs, and reduce labor costs. Moreover, the poured foam material can replace the adhesive to play the role of bonding and fixing, so that the first panel 1 is bonded and fixed to the reinforcement layer 32 through the first foam layer 31, and the first panel 1 The second panel 2 is bonded and fixed to the reinforcement layer 32 through the second foam layer 33 to form the overall sound-absorbing structure.

As a preferred embodiment, the sound attenuation structure further includes a first installation partition 4 and a second installation partition 5;

The first installation partition 4 is arranged between the reinforcement layer 32 and the first foam layer 31 for separating the reinforcement layer 32 and the first foam layer 31;

The second installation partition 5 is disposed between the reinforcement layer 32 and the second foam layer 33 for separating the reinforcement layer 32 and the second foam layer 33 .

Setting the first installation partition 4 and the second installation partition 5 is beneficial to quickly determine the installation positions of different material layers in the process of manufacturing the sound-absorbing structure, making the manufacturing process faster and more efficient, and adding Setting the first installation partition 4 and the second installation partition 5 is beneficial to increase the structural strength of the sound-absorbing structure. Preferably, both the first installation partition 4 and the second installation partition 5 are hot-dip galvanized sheets, or hot-dip galvanized sheets coated with a sound-absorbing plant fiber layer on at least one side. The hot-dip galvanized sheet has good structural strength, which is conducive to improving the overall structural strength and structural stability of the sound-absorbing structure, and the hot-dip galvanized sheet has good corrosion resistance and long service life. At least one side of the hot-dip galvanized sheet is coated with a sound-absorbing plant fiber layer, so that the first installation partition 4 and the second installation partition 5 have sound absorption in addition to the above beneficial effects, and can The sound-absorbing and noise-reducing performance of the sound-absorbing structure is further enhanced.

As a preferred embodiment, when the first panel 1 is the U-shaped plate structure, the opposite side walls of the first panel 1 are provided with The first chute 11 that the partition 4 is compatible with, the first installation partition 4 is slidably connected with the first panel 1 through the first chute 11 ;

The opposite side walls of the first panel 1 are provided with a second chute 12 that is compatible with the second installation partition 5, and the second installation partition 5 passes through the second The sliding groove 12 is slidably connected with the first panel 1 .

More specifically, in the opposite side walls of the first panel 1, one of the first sliding grooves 11 is arranged on each of the side walls, and the two first sliding grooves 11 on the two side walls set opposite and parallel to each other. Similarly, in the opposite side walls of the first panel 1, each of the side walls is provided with a second chute 12, and two of the second chute 12 are arranged opposite and parallel to each other. . The sliding connection makes the installation of the first installation partition 4 and the second installation partition 5 easier, and can be installed or disassembled according to actual needs, making the use of the sound-absorbing structure more flexible. The specific structure of the first sliding slot 11 and the second sliding slot 12 can be a U-shaped slot protruding to the outside of the side wall where they are located, as shown in FIG. 3 .

The structure of the sound-absorbing structure is simple and the manufacturing cost is low. It can directly replace any one wall in the shell of the existing air-conditioning unit, or directly use a plurality of the sound-absorbing structures to form the shell of the air-conditioning unit, so that the outside of the air-conditioning unit can form a complete The sound-absorbing structure improves the noise reduction effect of the air-conditioning unit; the use of the sound-absorbing structure does not require the operation of mounting the sound-absorbing plate on the shell wall of the air-conditioning unit, which is conducive to simplifying the assembly steps, reducing labor costs, and avoiding the need for mounting and setting. The sound-absorbing plate occupies the internal use space of the air-conditioning unit, and the filling structure 3 with sound-absorbing and heat-retaining functions is arranged inside the sound-absorbing structure, which is easy to clean and can improve the cleanliness and aesthetics of the interior design of the air-conditioning unit.

This specific embodiment also relates to an air conditioner, including the above-mentioned sound-absorbing structure, and the above-mentioned sound-absorbing structure can be used as any side shell wall in the shell of the air conditioner, or use the above-mentioned sound-absorbing structure to form the air conditioner The integral shell, in which the components that generate noise inside the air conditioner are completely wrapped, thereby significantly reducing the operating noise of the air conditioner and enabling the air conditioner to have better quiet performance.

Introduce the working principle of the present invention below:

The invention is to design a sound-absorbing structure which can effectively improve the noise-reducing ability of the foam board and simultaneously improve the heat insulation effect of the foam board. The sound-absorbing structure is mainly used at the external unit of the refrigeration system of the air-conditioning unit.

The technical problem that the present invention solves is:

The triple isolation method of foam material-polyurethane fiber sound-absorbing board-foam material is adopted to improve the sound-absorbing and noise-reducing ability of the sound-absorbing structure.

The beneficial effects that the present invention has are:

1. Adopt triple sound insulation and noise reduction materials, effectively isolate the noise source from the external environment, and greatly improve the noise reduction ability of the air conditioning unit.

2. The foam board structure only adopts two folded edges (U-shaped board structure). A U-shaped slot structure is provided at the folded edge, which can be used to set the first installation partition 4 and the second installation partition 5 to form three independent spaces. In addition, the form of openings at both ends is not only convenient for pouring, but also saves materials. Bring greater economic benefits.

3. It can greatly reduce the overall weight of the unit, reduce transportation costs, and reduce installation risks, and is very suitable for hoisting units. By reasonably controlling the proportions of the three layers, the optimal configuration of strength, noise reduction and heat insulation can be obtained.

In summary, those skilled in the art can easily understand that, on the premise of no conflict, the above-mentioned advantageous ways can be freely combined and superimposed.

The above descriptions are only preferred implementation modes of the present invention, and do not limit the present invention in any form. Anyone can draw other various forms of products under the enlightenment of the present invention, but regardless of making any changes in its shape or structure, all technical solutions that are identical or similar to the present application fall within the scope of the present invention. within the scope of protection.

Claims (10)

1. a kind of noise-reducing structure, it is characterised in that including：

First panel (1)；

Second panel (2), the second panel (2) is connected with the first panel (1), the second panel (2) with it is described First panel forms receiving space between (1)；

Interstitital texture (3), the interstitital texture (3) is arranged in the receiving space and can be used in noise reduction, the filling knot Structure (3) is from the first panel (1) side to the second panel (2) side, successively including the first foaming layer (31), strengthening layer (32) and the second foaming layer (33), the strengthening layer (32) is acoustic damping materials layer.

2. noise-reducing structure according to claim 1, it is characterised in that the strengthening layer (32) is by porous sound absorbing material system Into, and the sound-absorption coefficient of the strengthening layer (32) is more than the sound-absorption coefficient of first foaming layer (31) and second foaming layer (33) sound-absorption coefficient.

3. noise-reducing structure according to claim 2, it is characterised in that the strengthening layer (32) is polyurethane fiber sound-absorbing Plate or string abatvoix.

4. the noise-reducing structure according to claim any one of 1-3, it is characterised in that first foaming layer (31), described Strengthening layer (32) and the thickness size of second foaming layer (33) are successively decreased successively.

5. noise-reducing structure according to claim 4, it is characterised in that first foaming layer (31), the strengthening layer And the ratio between the thickness of second foaming layer (33) is (2.5-3) (32)：1.5：(0.5-1).

6. the noise-reducing structure according to claim any one of 1-5, it is characterised in that the first panel (1) and described Two panels (2) are U-shaped platy structure, the U-shaped opening of the first panel (1) and the U-shaped opening phase of the second panel (2) To setting, and the second panel (2) can cover at the outside of the first panel (1)；The first panel (1) and described Second panel (2) is collectively forming the hollow platy structure with the receiving space and both ends open.

7. the noise-reducing structure according to claim any one of 1-6, it is characterised in that also including first install dividing plate (4) and Second installs dividing plate (5)；

First installation dividing plate (4) is arranged between the strengthening layer (32) and first foaming layer (31), for separating The strengthening layer (32) and first foaming layer (31)；

Second installation dividing plate (5) is arranged between the strengthening layer (32) and second foaming layer (33), for separating The strengthening layer (32) and second foaming layer (33).

8. noise-reducing structure according to claim 7, it is characterised in that described first installs dividing plate (4) and described second pacifies Dress dividing plate (5) is heat zinc coating plate or at least side is coated with the heat zinc coating plate of sound-absorbing plant fiber layer.

9. the noise-reducing structure according to claim 7 or 8, it is characterised in that when the first panel (1) is the U-board During shape structure, being provided with the two side being oppositely arranged of the first panel (1) can install dividing plate (4) with described first The first chute (11) being adapted, described first installs dividing plate (4) by first chute (11) and the first panel (1) It is slidably connected；

Being provided with the two side being oppositely arranged of the first panel (1) can mutually fit with the described second installation dividing plate (5) The second chute (12) matched somebody with somebody, described second installs dividing plate (5) is slided by second chute (12) with the first panel (1) Connection.

10. a kind of air-conditioner, it is characterised in that including the noise-reducing structure described in claim any one of 1-9.