WO2022016684A1 - Sound absorbing panel - Google Patents
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- WO2022016684A1 WO2022016684A1 PCT/CN2020/114200 CN2020114200W WO2022016684A1 WO 2022016684 A1 WO2022016684 A1 WO 2022016684A1 CN 2020114200 W CN2020114200 W CN 2020114200W WO 2022016684 A1 WO2022016684 A1 WO 2022016684A1
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- absorbing panel
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- 238000009434 installation Methods 0.000 claims description 10
- 229920000784 Nomex Polymers 0.000 claims description 6
- 239000004763 nomex Substances 0.000 claims description 6
- 238000005553 drilling Methods 0.000 claims description 5
- 229910000838 Al alloy Inorganic materials 0.000 claims description 4
- 230000007423 decrease Effects 0.000 claims description 4
- 230000003247 decreasing effect Effects 0.000 claims description 3
- 238000010521 absorption reaction Methods 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 4
- 239000012790 adhesive layer Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 239000011358 absorbing material Substances 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 1
- 239000006096 absorbing agent Substances 0.000 description 1
- 239000004760 aramid Substances 0.000 description 1
- 229920003235 aromatic polyamide Polymers 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000012209 synthetic fiber Substances 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/172—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using resonance effects
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
- Laminated Bodies (AREA)
Abstract
A sound absorbing panel, comprising: a perforated plate (1), a bottom plate (2), and a honeycomb core (3) sandwiched between the perforated plate (1) and the bottom plate (2). Multiple mounting holes (11) are provided on the perforated plate (1), and extension tubes (4) are inserted into the mounting holes (11). The honeycomb core (3) comprises multiple honeycomb cells (31), and the extension tubes (4) extend into the honeycomb cells (31) in one-to-one correspondence. The present sound absorbing panel has a simple and reliable structure, sufficient mechanical strength and light weight, and is capable of achieving a lower frequency sound absorption effect.
Description
本发明涉及吸声材料，尤其涉及一种吸声面板，主要适用于轨道交通车体结构。The invention relates to sound-absorbing materials, in particular to a sound-absorbing panel, which is mainly suitable for rail transit vehicle body structures.
针对中低频段噪声，基于穿孔板的吸声器已经在实践中使用了，与传统的吸声材料相比，穿孔板结构更简单，更环保，适用于高温、高压等恶劣环境。以蜂窝芯和穿孔板组成的吸声面板具有足够的机械强度和较轻的重量，并且其吸声性能得到改善。但以上结构不能有效地消除低频噪声，并且受其几何形状的限制，具有固定的、相当窄的吸收峰的缺点。For mid-low frequency noise, sound absorbers based on perforated plates have been used in practice. Compared with traditional sound-absorbing materials, perforated plates are simpler in structure and more environmentally friendly, and are suitable for harsh environments such as high temperature and high pressure. The sound-absorbing panel composed of honeycomb core and perforated plate has sufficient mechanical strength and light weight, and its sound-absorbing performance is improved. However, the above structure cannot effectively eliminate low-frequency noise, and is limited by its geometry, and has the disadvantage of a fixed, rather narrow absorption peak.
【发明内容】[Content of the invention]
本发明要解决的技术问题是克服现有技术的不足，提供一种结构简单、具有更低频的吸声效果的吸声面板。The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a sound-absorbing panel with a simple structure and a lower-frequency sound-absorbing effect.
为解决上述技术问题，本发明采用以下技术方案：In order to solve the above-mentioned technical problems, the present invention adopts the following technical solutions:
一种吸声面板，包括穿孔板、底板、以及夹设于穿孔板和底板之间的蜂窝芯，所述穿孔板上开设有多个安装孔，所述安装孔中插设有延伸管，所述蜂窝芯包括多个蜂窝胞元，各所述延伸管一一对应地延伸至各所述蜂窝胞元内。A sound-absorbing panel includes a perforated plate, a bottom plate, and a honeycomb core sandwiched between the perforated plate and the bottom plate, the perforated plate is provided with a plurality of installation holes, and an extension pipe is inserted in the installation holes, so that the The honeycomb core includes a plurality of honeycomb cells, and each of the extension tubes extends into each of the honeycomb cells in a one-to-one correspondence.
作为上述技术方案的进一步改进：所述安装孔分为多排且相邻两排相互错开，各排所述安装孔的直径逐渐增加或逐渐减少，同一排安装孔分为多组，同一组安装孔中的各延伸管的长度逐渐增加或逐渐减少。As a further improvement of the above technical solution: the mounting holes are divided into multiple rows and two adjacent rows are staggered with each other, the diameter of the mounting holes in each row is gradually increased or decreased, the same row of mounting holes is divided into multiple groups, and the same group is installed The length of each extension tube in the hole gradually increases or decreases.
作为上述技术方案的进一步改进：所述蜂窝芯上侧与所述穿孔板下侧粘接固定，蜂窝芯下侧与所述底板上侧粘接固定。As a further improvement of the above technical scheme, the upper side of the honeycomb core is bonded and fixed with the lower side of the perforated plate, and the lower side of the honeycomb core is bonded and fixed with the upper side of the bottom plate.
作为上述技术方案的进一步改进：所述安装孔下侧与所述延伸管粘接固定。As a further improvement of the above technical solution, the lower side of the installation hole is bonded and fixed to the extension tube.
作为上述技术方案的进一步改进：所述穿孔板和底板为铝合金板。As a further improvement of the above technical solution: the perforated plate and the bottom plate are aluminum alloy plates.
作为上述技术方案的进一步改进：所述安装孔采用激光打孔加工而成。As a further improvement of the above technical solution: the mounting hole is processed by laser drilling.
作为上述技术方案的进一步改进：所述蜂窝芯为Nomex芯，所述延伸管为硬质PVC管。As a further improvement of the above technical solution: the honeycomb core is a Nomex core, and the extension pipe is a rigid PVC pipe.
作为上述技术方案的进一步改进：所述延伸管与所述安装孔采用间隙配合。As a further improvement of the above technical solution, the extension tube and the installation hole adopt clearance fit.
作为上述技术方案的进一步改进：所述延伸管为硬质PVC管。As a further improvement of the above technical solution: the extension pipe is a rigid PVC pipe.
作为上述技术方案的进一步改进：所述蜂窝芯为Nomex芯。As a further improvement of the above technical solution: the honeycomb core is a Nomex core.
与现有技术相比，本发明的优点在于：本发明公开的吸声面板，利用蜂窝胞元、穿孔板和底板组合形成一个共振腔体，并通过插设于穿孔板中的延伸管延伸孔径，从而可以达到更低频的吸声效果，且整体结构简单、可靠，具有足够的机械强度和较轻的重量。Compared with the prior art, the present invention has the advantages that the sound-absorbing panel disclosed in the present invention utilizes a combination of honeycomb cells, a perforated plate and a bottom plate to form a resonance cavity, and extends the aperture through an extension tube inserted in the perforated plate. , so that a lower frequency sound absorption effect can be achieved, and the overall structure is simple and reliable, with sufficient mechanical strength and light weight.
图1是本发明吸声面板的立体结构示意图。FIG. 1 is a schematic diagram of the three-dimensional structure of the sound-absorbing panel of the present invention.
图2是本发明吸声面板分解状态的立体结构示意图。FIG. 2 is a schematic three-dimensional structural diagram of the sound-absorbing panel of the present invention in a disassembled state.
图3是本发明中同一排的两组安装孔的剖视结构示意图。3 is a schematic cross-sectional structural diagram of two sets of mounting holes in the same row in the present invention.
图4是本发明中的穿孔板的俯视结构示意图。FIG. 4 is a schematic top view of the structure of the perforated plate in the present invention.
图中各标号表示：1、穿孔板；11、安装孔；2、底板；3、蜂窝芯；31、蜂窝胞元；4、延伸管。11. Mounting hole; 2. Bottom plate; 3. Honeycomb core; 31. Honeycomb cell; 4. Extension tube.
以下结合说明书附图和具体实施例对本发明作进一步详细说明。The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.
图1至图4示出了本发明吸声面板的一种实施例，本实施例的吸声面板，包括穿孔板1、底板2、以及夹设于穿孔板1和底板2之间的蜂窝芯3，穿孔板1上开设有多个安装孔11，安装孔11中插设有延伸管4，蜂窝芯3包括多个蜂窝胞元31，各延伸管4一一对应地延伸至各蜂窝胞元31内。1 to 4 show an embodiment of the sound-absorbing panel of the present invention. The sound-absorbing panel of this embodiment includes a perforated plate 1 , a bottom plate 2 , and a honeycomb core sandwiched between the perforated plate 1 and the bottom plate 2 3. A plurality of installation holes 11 are opened on the perforated plate 1, and extension tubes 4 are inserted in the installation holes 11. The honeycomb core 3 includes a plurality of honeycomb cells 31, and each extension tube 4 extends to each honeycomb cell in a one-to-one correspondence. within 31.
该吸声面板，利用蜂窝芯3内的蜂窝胞元31、穿孔板1和底板2组合形成一个共振腔体，并通过插设于穿孔板1中的延伸管4延伸孔径，从而可以达到更低频的吸声效果，且整体结构简单、可靠，具有足够的机械强度和较轻的重量。The sound-absorbing panel utilizes the honeycomb cells 31 in the honeycomb core 3, the perforated plate 1 and the bottom plate 2 to form a resonant cavity, and extends the aperture through the extension tube 4 inserted in the perforated plate 1, so that a lower frequency can be achieved. The sound absorption effect is excellent, and the overall structure is simple and reliable, with sufficient mechanical strength and light weight.
进一步地，安装孔11分为多排且相邻两排相互错开，各排安装孔11的直径逐渐增加或逐渐减少，同一排安装孔11分为多组，同一组安装孔11中的各延伸管4的长度逐渐增加或逐渐减少。具体参照图3和图4，本实施例中，自左向右位于同一直线上的安装孔11为一排，自下而上，各排安装孔11的直径逐渐减少，当然在其他实施例中，各排安装孔11的直径也可以逐渐增加；自左向右，同一排安装孔11每4个分为一组，同一组对应的4根延伸管4的长度逐渐减少，当然在其他实施例中，同一组中的各延伸管4的长度也可以逐渐增加。通过多排安装孔11直径的变化和同一排安装孔11中延伸管4长度的周期性变化，或者说采用不同大小孔径和不同长度延伸管4交叉组合，使得吸声面板结构具有多组共振频率，可以达到更宽的吸声频带。Further, the mounting holes 11 are divided into multiple rows and two adjacent rows are staggered with each other, the diameter of each row of mounting holes 11 gradually increases or decreases, the same row of mounting holes 11 is divided into multiple groups, and each extension in the same group of mounting holes 11 The length of the tube 4 is gradually increased or decreased. 3 and 4, in this embodiment, the mounting holes 11 located on the same straight line from left to right form a row, and from bottom to top, the diameter of each row of mounting holes 11 gradually decreases. Of course, in other embodiments , the diameter of each row of mounting holes 11 can also be gradually increased; from left to right, the same row of mounting holes 11 is divided into groups of four, and the lengths of the four extension pipes 4 corresponding to the same group are gradually reduced. Of course, in other embodiments , the length of each extension tube 4 in the same group can also be gradually increased. The sound-absorbing panel structure has multiple sets of resonance frequencies by changing the diameter of multiple rows of mounting holes 11 and periodically changing the length of the extension tubes 4 in the same row of mounting holes 11 , or using different sizes of apertures and different lengths of extension tubes 4 to cross and combine. , can achieve a wider sound absorption frequency band.
作为优选的技术方案，本实施例中，蜂窝芯3上侧与穿孔板1下侧通过胶层粘接固定，蜂窝芯3下侧与底板2上侧也通过胶层粘接固定，安装孔11下侧与延伸管4同样采用粘接的方式固定。具体在制作过程中，可先将延伸管4插入安装孔11中，并保持上端与穿孔板 1上侧平齐，然后在穿孔板1下侧与延伸管4的接口处利用胶水粘接固定；固定蜂窝芯3之前，预先在穿孔板1下侧和底板2上侧覆盖一层胶层，然后再将蜂窝芯3固定于两层胶层中。As a preferred technical solution, in this embodiment, the upper side of the honeycomb core 3 and the lower side of the perforated plate 1 are bonded and fixed by the adhesive layer, and the lower side of the honeycomb core 3 and the upper side of the bottom plate 2 are also bonded and fixed by the adhesive layer, and the mounting holes 11 The lower side and the extension tube 4 are fixed by bonding in the same manner. Specifically, in the manufacturing process, the extension tube 4 can be inserted into the installation hole 11 first, and the upper end is kept flush with the upper side of the perforated plate 1, and then glue is used to fix the interface between the lower side of the perforated plate 1 and the extension tube 4; Before fixing the honeycomb core 3, a layer of adhesive layer is pre-covered on the lower side of the perforated plate 1 and the upper side of the bottom plate 2, and then the honeycomb core 3 is fixed in the two layers of adhesive layer.
作为优选的技术方案，本实施例中，穿孔板1和底板2为铝合金板。铝合金板质轻、机械强度好，且便于后续采用激光打孔的方式加工安装孔11。当然在其他实施例中，穿孔板1和底板2也可采用金属面板或复合材料面板。As a preferred technical solution, in this embodiment, the perforated plate 1 and the bottom plate 2 are aluminum alloy plates. The aluminum alloy plate is light in weight and good in mechanical strength, and is convenient for subsequent processing of the mounting holes 11 by means of laser drilling. Of course, in other embodiments, the perforated plate 1 and the bottom plate 2 may also be metal panels or composite panels.
作为优选的技术方案，本实施例中，安装孔11采用激光打孔加工而成。采用激光打孔，有利于保证孔径的精度，且具有较高的加工效率。当然在其他实施例中，也可采用冲孔等方式加工安装孔11。As a preferred technical solution, in this embodiment, the mounting hole 11 is formed by laser drilling. The use of laser drilling is conducive to ensuring the accuracy of the aperture and has high processing efficiency. Of course, in other embodiments, the mounting hole 11 may also be processed by means of punching or the like.
作为优选的技术方案，本实施例中，蜂窝芯3为Nomex芯(Nomex，诺美克斯，也称芳纶弹性合成纤维)，耐高温、阻燃、无毒，具有较好的电气和机械性能，延伸管4为硬质PVC管。当然在其他实施例中，也可采用树脂蜂窝芯等。As a preferred technical solution, in this embodiment, the honeycomb core 3 is a Nomex core (Nomex, also known as aramid elastic synthetic fiber), which is high temperature resistant, flame retardant, non-toxic, and has good electrical and mechanical properties. Performance, the extension pipe 4 is a rigid PVC pipe. Of course, in other embodiments, resin honeycomb cores and the like can also be used.
作为优选的技术方案，本实施例中，延伸管4与安装孔11采用间隙配合，便于延伸管4插入安装孔11中，提高效率。As a preferred technical solution, in this embodiment, the extension pipe 4 and the installation hole 11 adopt clearance fit, which facilitates the insertion of the extension pipe 4 into the installation hole 11 and improves the efficiency.
虽然本发明已以较佳实施例揭露如上，然而并非用以限定本发明。任何熟悉本领域的技术人员，在不脱离本发明技术方案范围的情况下，都可利用上述揭示的技术内容对本发明技术方案做出许多可能的变动和修饰，或修改为等同变化的等效实施例。因此，凡是未脱离本发明技术方案的内容，依据本发明技术实质对以上实施例所做的任何简单修改、等同变化及修饰，均应落在本发明技术方案保护的范围内。Although the present invention has been disclosed above with preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art, without departing from the scope of the technical solution of the present invention, can make many possible changes and modifications to the technical solution of the present invention by using the technical content disclosed above, or modify it into an equivalent implementation of equivalent changes. example. Therefore, any simple modifications, equivalent changes and modifications made to the above embodiments according to the technical essence of the present invention should fall within the protection scope of the technical solutions of the present invention without departing from the content of the technical solutions of the present invention.
Claims (10)
- 一种吸声面板，其特征在于：包括穿孔板(1)、底板(2)、以及夹设于穿孔板(1)和底板(2)之间的蜂窝芯(3)，所述穿孔板(1)上开设有多个安装孔(11)，所述安装孔(11)中插设有延伸管(4)，所述蜂窝芯(3)包括多个蜂窝胞元(31)，各所述延伸管(4)一一对应地延伸至各所述蜂窝胞元(31)内。A sound-absorbing panel is characterized by comprising a perforated plate (1), a bottom plate (2), and a honeycomb core (3) sandwiched between the perforated plate (1) and the bottom plate (2), the perforated plate ( 1) A plurality of mounting holes (11) are opened on the mounting holes (11), and extension pipes (4) are inserted in the mounting holes (11), and the honeycomb core (3) includes a plurality of honeycomb cells (31), each of which is The extension pipes (4) extend into each of the honeycomb cells (31) in a one-to-one correspondence.
- 根据权利要求1所述的吸声面板，其特征在于：所述安装孔(11)分为多排且相邻两排相互错开，各排所述安装孔(11)的直径逐渐增加或逐渐减少，同一排安装孔(11)分为多组，同一组安装孔(11)中的各延伸管(4)的长度逐渐增加或逐渐减少。The sound-absorbing panel according to claim 1, wherein the mounting holes (11) are divided into multiple rows and two adjacent rows are staggered, and the diameters of the mounting holes (11) in each row are gradually increased or decreased. , the same row of mounting holes (11) is divided into multiple groups, and the lengths of each extension pipe (4) in the same group of mounting holes (11) gradually increase or decrease gradually.
- 根据权利要求1或2所述的吸声面板，其特征在于：所述蜂窝芯(3)上侧与所述穿孔板(1)下侧粘接固定，蜂窝芯(3)下侧与所述底板(2)上侧粘接固定。The sound-absorbing panel according to claim 1 or 2, characterized in that: the upper side of the honeycomb core (3) and the lower side of the perforated plate (1) are bonded and fixed, and the lower side of the honeycomb core (3) is fixed with the The upper side of the bottom plate (2) is bonded and fixed.
- 根据权利要求3所述的吸声面板，其特征在于：所述安装孔(11)下侧与所述延伸管(4)粘接固定。The sound-absorbing panel according to claim 3, characterized in that: the lower side of the installation hole (11) is bonded and fixed to the extension pipe (4).
- 根据权利要求1或2所述的吸声面板，其特征在于：所述穿孔板(1)和底板(2)为铝合金板。The sound-absorbing panel according to claim 1 or 2, characterized in that: the perforated plate (1) and the bottom plate (2) are aluminum alloy plates.
- 根据权利要求5所述的吸声面板，其特征在于：所述安装孔(11)采用激光打孔加工而成。The sound-absorbing panel according to claim 5, wherein the mounting hole (11) is formed by laser drilling.
- 根据权利要求5所述的吸声面板，其特征在于：所述蜂窝芯(3)为Nomex芯，所述延伸管(4)为硬质PVC管。The sound-absorbing panel according to claim 5, characterized in that: the honeycomb core (3) is a Nomex core, and the extension pipe (4) is a rigid PVC pipe.
- 根据权利要求1或2所述的吸声面板，其特征在于：所述延伸管(4)与所述安装孔(11)采用间隙配合。The sound-absorbing panel according to claim 1 or 2, characterized in that: the extension pipe (4) and the mounting hole (11) adopt clearance fit.
- 根据权利要求1或2所述的吸声面板，其特征在于：所述延伸管(4)为硬质PVC管。The sound-absorbing panel according to claim 1 or 2, characterized in that: the extension pipe (4) is a rigid PVC pipe.
- 根据权利要求1或2所述的吸声面板，其特征在于：所述蜂窝芯(3)为Nomex芯。The sound-absorbing panel according to claim 1 or 2, characterized in that: the honeycomb core (3) is a Nomex core.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010722749.2 | 2020-07-24 | ||
| CN202010722749.2A CN111798825A (en) | 2020-07-24 | 2020-07-24 | Sound absorption panel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2022016684A1 true WO2022016684A1 (en) | 2022-01-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| PCT/CN2020/114200 WO2022016684A1 (en) | 2020-07-24 | 2020-09-09 | Sound absorbing panel |
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| CN (1) | CN111798825A (en) |
| WO (1) | WO2022016684A1 (en) |
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| CN113362798A (en) * | 2021-05-10 | 2021-09-07 | 西安交通大学 | Variable tubular inner insertion tube type honeycomb layer core sandwich plate sound absorption structure |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004156555A (en) * | 2002-11-07 | 2004-06-03 | Nihon Glassfiber Industrial Co Ltd | Silencer for fuel cell vehicle and sound absorbing material of the silencer |
| CN203773937U (en) * | 2014-02-10 | 2014-08-13 | 郑州宇通客车股份有限公司 | Sound insulating and absorbing honeycomb panel |
| CN108346421A (en) * | 2018-05-02 | 2018-07-31 | 南昌航空大学 | A kind of honeycomb interlayer sound absorption structure of built-in microperforated panel |
| CN208164418U (en) * | 2018-05-02 | 2018-11-30 | 南昌航空大学 | A kind of honeycomb interlayer sound absorption structure of built-in son back chamber |
| CN109584855A (en) * | 2019-01-11 | 2019-04-05 | 南昌航空大学 | Honeycomb-microperforated panel composite structural design method of adjustable sound absorption frequency |
| CN110091555A (en) * | 2019-05-03 | 2019-08-06 | 芜湖聚创新材料有限责任公司 | A kind of double honeycomb Cellular structure composite plates of sound insulation |
| CN110397505A (en) * | 2019-07-11 | 2019-11-01 | 上海交通大学 | A kind of extension cast perforated plate honeycomb interlayer sound absorption structure |
| CN110576643A (en) * | 2019-07-30 | 2019-12-17 | 南京航空航天大学 | Micro-perforated plate double-layer level honeycomb sandwich sound absorption bearing composite structure |
| CN210109814U (en) * | 2019-09-05 | 2020-02-21 | 南昌航空大学 | Honeycomb structure with adjustable sound absorption performance |
| CN111048059A (en) * | 2019-12-09 | 2020-04-21 | 南京航空航天大学 | Micro-perforated plate spider web honeycomb sandwich sound absorption bearing composite structure |
-
2020
- 2020-07-24 CN CN202010722749.2A patent/CN111798825A/en active Pending
- 2020-09-09 WO PCT/CN2020/114200 patent/WO2022016684A1/en active Application Filing
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004156555A (en) * | 2002-11-07 | 2004-06-03 | Nihon Glassfiber Industrial Co Ltd | Silencer for fuel cell vehicle and sound absorbing material of the silencer |
| CN203773937U (en) * | 2014-02-10 | 2014-08-13 | 郑州宇通客车股份有限公司 | Sound insulating and absorbing honeycomb panel |
| CN108346421A (en) * | 2018-05-02 | 2018-07-31 | 南昌航空大学 | A kind of honeycomb interlayer sound absorption structure of built-in microperforated panel |
| CN208164418U (en) * | 2018-05-02 | 2018-11-30 | 南昌航空大学 | A kind of honeycomb interlayer sound absorption structure of built-in son back chamber |
| CN109584855A (en) * | 2019-01-11 | 2019-04-05 | 南昌航空大学 | Honeycomb-microperforated panel composite structural design method of adjustable sound absorption frequency |
| CN110091555A (en) * | 2019-05-03 | 2019-08-06 | 芜湖聚创新材料有限责任公司 | A kind of double honeycomb Cellular structure composite plates of sound insulation |
| CN110397505A (en) * | 2019-07-11 | 2019-11-01 | 上海交通大学 | A kind of extension cast perforated plate honeycomb interlayer sound absorption structure |
| CN110576643A (en) * | 2019-07-30 | 2019-12-17 | 南京航空航天大学 | Micro-perforated plate double-layer level honeycomb sandwich sound absorption bearing composite structure |
| CN210109814U (en) * | 2019-09-05 | 2020-02-21 | 南昌航空大学 | Honeycomb structure with adjustable sound absorption performance |
| CN111048059A (en) * | 2019-12-09 | 2020-04-21 | 南京航空航天大学 | Micro-perforated plate spider web honeycomb sandwich sound absorption bearing composite structure |
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| CN111798825A (en) | 2020-10-20 |
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