CN215220256U - Helmholtz sound insulation structure - Google Patents
Helmholtz sound insulation structure Download PDFInfo
- Publication number
- CN215220256U CN215220256U CN202121418812.XU CN202121418812U CN215220256U CN 215220256 U CN215220256 U CN 215220256U CN 202121418812 U CN202121418812 U CN 202121418812U CN 215220256 U CN215220256 U CN 215220256U
- Authority
- CN
- China
- Prior art keywords
- hollow tube
- sound insulation
- helmholtz
- cavity
- hollow
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
Abstract
The utility model provides a helmholtz sound insulation structure, including a plurality of sound insulation pieces that the structure is the same side by side, sound insulation piece is including a plurality of hollow tubes that set up side by side, and every hollow tube is including one or more cavities, and the volume of every cavity is different, and is provided with first through-hole on every cavity respectively. The utility model discloses a plurality of different helmholtz resonance structures have been constituteed to the cavity of the first through-hole in different apertures and different volumes, can completely cut off the low frequency noise of different frequencies, the realization is effectively isolated to low frequency noise, low frequency sound insulation can be good, every sound insulation all has a plurality of different helmholtz resonance structures, and a plurality of sound insulation are that the periodicity sets up side by side, then the helmholtz resonance structure of a plurality of sound insulation also is side by side, thereby make a plurality of different helmholtz resonance structures present periodic distribution, this helmholtz sound insulation structure has weight lowly, and is more frivolous, easy processing, simple to operate, the lower advantage of cost.
Description
Technical Field
The utility model relates to a noise insulation technical field especially relates to a helmholtz sound insulation structure.
Background
In the real life production, the high-frequency component in the noise is isolated mainly through the sound insulation material, and the low-frequency noise has very strong penetrating power, has the characteristics of long propagation distance, strong sound transmission capability, large isolation difficulty and the like, and the noise pollution caused by the low-frequency noise is more serious.
In order to meet the sound insulation requirements in the field with severe limitation on materials, such as aerospace and the like, a light sound insulation material is generally used for insulating noise, and the traditional light sound insulation material is difficult to effectively isolate low-frequency noise due to the limitation of mass laws. In recent years, the academics have continuously researched aiming at the problem, and the results mainly focus on the improvement of the traditional resonance sound absorption structure and the design of a novel acoustic metamaterial. The traditional resonance sound absorption structure is mainly applied to structures such as sound insulation boards, is supplemented with viscoelastic damping materials, porous materials and back cavity designs or active acoustic components, and has the advantages of relatively complex structural design, troublesome installation, higher implementation cost, heavier weight and insufficient lightness and thinness.
SUMMERY OF THE UTILITY MODEL
The utility model provides a helmholtz sound insulation structure for resonance acoustic celotex board for solving among the prior art has the structure complicacy, and the installation is troublesome, realizes that the cost is higher, and not enough frivolous defect realizes effectively completely cutting off low frequency noise, and weight is low, and is more frivolous, easy to handle, simple to operate, the cost is lower.
The utility model provides a helmholtz sound insulation structure, including a plurality of sound insulation pieces that the structure is the same side by side, sound insulation piece is including a plurality of hollow tubes that set up side by side, every the hollow tube is including one or more cavity, every the volume of cavity is different, and every be provided with first through-hole on the cavity respectively.
According to the utility model provides a helmholtz sound insulation structure, two liang be in the same place through adhesion fixed connection between the hollow tube.
According to the utility model provides a pair of helmholtz sound insulation structure, be provided with one or more separator in the hollow tube, the separator be used for with a plurality of different volumes are cut apart into to the hollow tube the cavity.
According to the utility model provides a pair of helmholtz sound insulation structure, be provided with the second through-hole on the separator.
According to the utility model provides a pair of helmholtz sound insulation structure, be provided with the communicating member on the separator, the communicating member makes the separator both sides the cavity intercommunication.
According to the utility model provides a pair of helmholtz sound insulation structure, the separator is including cutting apart the stopper, separate the stopper around with the internal face of hollow tube is connected.
According to the utility model provides a pair of helmholtz sound insulation structure, the sound insulation piece is including the first hollow tube, second hollow tube and the third hollow tube that set up side by side in proper order, be provided with a cavity in the first hollow tube, be provided with the cavity of three different volumes in the second hollow tube, be provided with the cavity of four different volumes in the third hollow tube.
According to the utility model provides a pair of helmholtz sound insulation structure, the hollow tube is one of circular hollow tube, square hollow tube or hexagon hollow tube.
According to the utility model provides a pair of helmholtz sound insulation structure, the hollow tube is metal hollow tube or combined material hollow tube.
According to the utility model provides a pair of helmholtz sound insulation structure, the hollow tube is individual layer hollow tube or double-deck hollow tube.
According to the utility model provides a pair of helmholtz sound insulation structure, helmholtz resonator structure has been constituteed together to first through-hole on every cavity and the cavity, a plurality of different helmholtz resonance structures have been constituteed to the first through-hole in different apertures and the cavity of different volumes, thereby can completely cut off the low-frequency noise of different frequencies, the realization is effectively isolated to low-frequency noise, low frequency sound insulation can be good, every sound insulation piece all has a plurality of different helmholtz resonance structures, and a plurality of sound insulation pieces are that the periodicity sets up side by side, then the helmholtz resonance structure of a plurality of sound insulation pieces also is side by side, thereby make a plurality of different helmholtz resonance structures present periodic distribution, this helmholtz structure has weight lowly, more frivolous, easy processing, high durability and convenient installation, the lower advantage of cost.
Drawings
In order to more clearly illustrate the technical solutions of the present invention or the prior art, the following briefly introduces the drawings required for the embodiments or the prior art descriptions, and obviously, the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a helmholtz sound insulation structure provided by the present invention;
fig. 2 is a cross-sectional view of a sound insulation member of a helmholtz sound insulation structure provided by the present invention;
reference numerals:
1: a sound insulating member; 11: a hollow tube; 111: a cavity;
112: a first through hole; 113: a separator; 114: a communication member.
Detailed Description
To make the objects, technical solutions and advantages of the present invention clearer, the drawings of the present invention are combined to clearly and completely describe the technical solutions of the present invention, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
The following description is made with reference to fig. 1 and fig. 2 for a helmholtz sound insulation structure of the present invention, where the helmholtz sound insulation structure includes a plurality of sound insulation members 1 parallel to each other and having the same structure, each sound insulation member 1 includes a plurality of hollow pipes 11 arranged in parallel, each hollow pipe 11 includes one or more cavities 111, the volume of each cavity 111 is different, and each cavity 111 is provided with first through holes 112.
In use, each cavity 111 and the first through holes 112 of the cavity 111 together constitute a helmholtz resonator structure, the volume of the cavity 111 and the aperture of the first through hole 112 can be changed according to actual requirements, the first through holes 112 with different apertures and the cavities 111 with different volumes form a plurality of different helmholtz resonance structures, thereby isolating low-frequency noise with different frequencies, realizing effective isolation of the low-frequency noise, having excellent low-frequency sound insulation performance, each sound insulation member 1 has a plurality of different Helmholtz resonance structures, and a plurality of sound insulation members 1 are arranged in parallel periodically, the helmholtz resonance structures of the plurality of sound insulating members 1 are also juxtaposed, so that a plurality of different helmholtz resonance structures exhibit a periodic distribution, this helmholtz sound insulation structure has weight lowly, and is more frivolous, easy to process, simple to operate, advantage that the cost is lower.
Further, in an embodiment of the present invention, two hollow pipes 11 are fixedly connected together by adhesion. The side wall faces of the two hollow pipes 11 are connected with each other through adhesion, so that the two hollow pipes 11 are arranged in parallel, the hollow pipes 11 are connected together in sequence in an adhesion mode, all the hollow pipes 11 are arranged in parallel and are distributed periodically, the installation is convenient, the processing is easy, and the cost is reduced.
The utility model provides a helmholtz sound insulation structure, wherein, as shown in figure 2, be provided with one or more separator 113 in the hollow tube 11, separator 113 is used for cutting apart hollow tube 11 into the cavity 111 of a plurality of different volumes. When using, install one or more separator 113 in hollow tube 11 for hollow tube 11 is divided into a plurality of cavitys 111, and the volume of every cavity 111 can be adjusted through the quantity of adjustment separator 113 and the position of separator 113 in hollow tube 11, thereby obtains different helmholtz resonance structure, realizes the isolation to the low frequency noise of different frequencies, and simple structure, light in weight, easy processing, simple to operate, cost are lower.
Furthermore, in the embodiment of the present invention, as shown in fig. 2, the partition 113 is provided with a second through hole, and the second through hole may be located in the middle of the partition 113, or may be disposed at any position of the partition 113 according to actual requirements. When the cavity isolation structure is used, the second through hole enables the cavities 111 on the two sides of the partition 113 to be communicated, the volume of the cavity 111 is changed, and the Helmholtz resonance structure formed by the cavities 111 can also be different, so that low-frequency noise with corresponding frequency can be isolated.
As shown in fig. 2, a communication member 114 is provided on the partition 113, and the communication member 114 allows the cavities 111 on both sides of the partition to communicate with each other. When the two cavities 111 are communicated by the communicating piece 114, the volumes of the cavities 111 are changed, and the helmholtz resonance structures formed by the corresponding cavities 111 are different, so that low-frequency noise with corresponding frequency can be isolated.
As shown in fig. 2, the partition 113 includes a partition plug, and the periphery of the partition plug is connected to the inner wall surface of the hollow tube 11. Install one or more and separate the stopper in the relevant position of hollow tube 11, separate the stopper and use to separate the stopper and divide into two independent different cavitys 111 of volume with hollow tube 11 as the border, and then obtain different helmholtz resonance structures, can isolate the low frequency noise of different frequencies.
As shown in fig. 2, the separating plug may be a metal plate or a micro-perforated plate, or may be a plate made of rubber, felt, foam, or other materials.
The utility model provides a helmholtz sound insulation structure, wherein, as shown in figure 1 and figure 2, sound insulation 1 is provided with a cavity including the first hollow tube, second hollow tube and the third hollow tube that set up side by side in proper order in the first hollow tube, is provided with the cavity of three different volumes in the second hollow tube, is provided with the cavity of four different volumes in the third hollow tube. When using, first hollow tube department forms a helmholtz resonance structure, second hollow tube department can form the helmholtz resonance structure of three difference, third hollow tube department can form four different helmholtz resonance structures, the third hollow tube links together with the first hollow tube of another sound insulating part 1 side by side, the periodic arrangement of hollow tube 11 has been realized, in the in-service use, can also be according to actual need to first hollow tube, the quantity of the interior separator 113 of second hollow tube and third hollow tube is adjusted, and then adjust the 111 quantity of cavity of hollow tube 11, and then can obtain the helmholtz resonance structure of required quantity.
In the optional embodiment of the present invention, the hollow tube 11 is one of a circular hollow tube, a square hollow tube or a hexagonal hollow tube, and one of the hollow tubes can be selected according to actual requirements, and in this embodiment, the hollow tube 11 is a circular hollow tube.
Furthermore, in an alternative embodiment of the present invention, the hollow tube 11 is a metal hollow tube or a composite hollow tube. The hollow pipe 11 is a metal hollow pipe in this embodiment.
Further, the hollow pipe 11 is a single-layer hollow pipe or a double-layer hollow pipe. The hollow pipe 11 in this embodiment is a single-layer hollow pipe 11.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.
Claims (10)
1. The utility model provides a Helmholtz sound insulation structure, its characterized in that, including a plurality of sound insulation pieces that the structure is the same side by side, sound insulation piece is including a plurality of hollow tubes that set up side by side, every the hollow tube is including one or more cavity, every the volume of cavity is different, and every be provided with first through-hole on the cavity respectively.
2. A helmholtz acoustical isolation structure of claim 1 wherein two of the hollow tubes are fixedly connected together by adhesion.
3. A helmholtz acoustic isolation structure according to claim 1 or 2 wherein one or more dividers are provided within the hollow tube for dividing the hollow tube into a plurality of different volumes of the cavity.
4. A helmholtz acoustic isolation structure according to claim 3 wherein the partition is provided with a second through hole.
5. A helmholtz acoustic isolation structure according to claim 3 wherein a communication member is provided on the partition member, the communication member communicating the chambers on both sides of the partition member.
6. A helmholtz acoustic isolation structure according to claim 3 wherein the spacer includes a spacer plug connected at its periphery to an inner wall surface of the hollow tube.
7. A helmholtz sound insulating structure according to claim 1 or 2, wherein the sound insulating member includes a first hollow pipe, a second hollow pipe and a third hollow pipe arranged in parallel in this order, wherein one cavity is provided in the first hollow pipe, three cavities of different volumes are provided in the second hollow pipe, and four cavities of different volumes are provided in the third hollow pipe.
8. A helmholtz acoustical isolation structure according to claim 1 or 2 wherein the hollow tube is one of a circular hollow tube, a square hollow tube, or a hexagonal hollow tube.
9. A helmholtz acoustical isolation structure according to claim 1 or 2 wherein the hollow tube is a metal hollow tube or a composite hollow tube.
10. A helmholtz acoustical isolation structure according to claim 1 or 2 wherein the hollow tube is a single layer hollow tube or a double layer hollow tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121418812.XU CN215220256U (en) | 2021-06-24 | 2021-06-24 | Helmholtz sound insulation structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121418812.XU CN215220256U (en) | 2021-06-24 | 2021-06-24 | Helmholtz sound insulation structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215220256U true CN215220256U (en) | 2021-12-17 |
Family
ID=79435122
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121418812.XU Active CN215220256U (en) | 2021-06-24 | 2021-06-24 | Helmholtz sound insulation structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215220256U (en) |
-
2021
- 2021-06-24 CN CN202121418812.XU patent/CN215220256U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109584855B (en) | Honeycomb-micropunch plate composite structure design method capable of adjusting sound absorption frequency | |
| CN107437411B (en) | Low-frequency composite sound absorption device | |
| CN112779998B (en) | Full-band super-structure sound absorber | |
| CN107401225B (en) | Flexible particle piled sound absorption and insulation structure | |
| CN105788587A (en) | Porous composite sound absorption structure | |
| CN113096626A (en) | Silent box | |
| CN215220256U (en) | Helmholtz sound insulation structure | |
| CN112382264A (en) | Broadband sound absorption structure | |
| CN111276116A (en) | Multilayer micro-perforated plate sound absorption structure | |
| CN105810186A (en) | Composite sound absorption structure | |
| CN219225891U (en) | Composite multi-cell sound absorption structure | |
| CN217506890U (en) | Sound absorption structure | |
| CN207512628U (en) | Bidimensional pseudo-random sequence micropunch ultrabroad band sound absorption structure | |
| CN207852307U (en) | Acoustic impedance and the three-dimensional micropunch ultra wide band sound absorption structure of surface configuration binary cycle distribution | |
| CN210136718U (en) | Serial-type sound absorption module | |
| CN213716501U (en) | Multi-resonant cavity local resonance type photonic crystal sound barrier | |
| CN112185331B (en) | Porous mixed channel ultra wide band sound absorption structure | |
| CN113123261A (en) | Bionic sound absorption structure based on conch cavity structure and sound absorption unit plate thereof | |
| CN110444188B (en) | Underwater perforated mixed cavity structure acoustic covering layer | |
| CN203440934U (en) | Suspended absorber | |
| CN112628517A (en) | Pipeline silencer, device and manufacturing method | |
| CN107369437A (en) | A kind of compound sound-absorption structural that panel is combined with soft resonating member that absorbs sound | |
| CN110783084A (en) | Broadband composite resonance sound absorption and insulation structure | |
| CN219676887U (en) | Composite interlayer film through hole type acoustic metamaterial sound insulation device | |
| CN219411370U (en) | Assembled sound insulation wall structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |