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Bionic sound absorption structure based on conch cavity structure and sound absorption unit plate thereof
The invention discloses a bionic sound absorption structure based on a conch cavity structure and a sound absorption unit plate thereof. The bionic sound absorption structure comprises a face plate, a bottom plate, a partition plate and a cavity, openings in the two ends of the cavity are covered with the face plate and the bottom plate to form a sound absorption cavity, and partition plate holes are formed in the partition plate; the partition plates are arranged in the circumferential direction of the sound absorption cavity so as to divide the sound absorption cavity into a plurality of sub-sound absorption cavities, the adjacent sub-sound absorption cavities are communicated through partition plate holes, and a plurality of micro-penetrating holes are formed in the panel. The sea snail cavity imitating sound absorption structure can achieve smaller thickness and more sound absorption peaks, is simple in structure and low in manufacturing cost, has the advantages of being easy to manufacture and convenient to optimize, and can design structural parameters in a customized mode according to the required frequency. The sea snail cavity imitating sound absorption structure not only has a low-frequency absorption peak, but also has an additional absorption peak at a relatively high-frequency position, so that the space can be utilized more effectively when broadband coupling sound absorption is realized.
本发明公开了一种基于海螺腔体构造的仿生吸声结构及其吸声单元板，仿生吸声结构包括面板、底板、隔板和腔体，腔体两端的开口通过面板和底板覆盖以形成一吸声腔，隔板上设置有隔板孔，隔板沿着吸声腔的周向布设以将吸声腔分隔为多个子吸声腔，相邻子吸声腔通过隔板孔连通，面板上设置有多个微穿孔。本发明的仿海螺腔体吸声结构可以实现更小的厚度，更多的吸声峰，结构简单、制作成本较低廉，并且同时具有易于制造和便于优化的优点，可以根据需求频率进行定制化设计结构参数。仿海螺腔体吸声结构不仅有低频吸收峰，在相对高频处还有额外的吸收峰，在实现宽频耦合吸声时，能够更加有效的利用空间。
Bionic sound absorption structure based on conch cavity structure and sound absorption unit plate thereof
The invention discloses a bionic sound absorption structure based on a conch cavity structure and a sound absorption unit plate thereof. The bionic sound absorption structure comprises a face plate, a bottom plate, a partition plate and a cavity, openings in the two ends of the cavity are covered with the face plate and the bottom plate to form a sound absorption cavity, and partition plate holes are formed in the partition plate; the partition plates are arranged in the circumferential direction of the sound absorption cavity so as to divide the sound absorption cavity into a plurality of sub-sound absorption cavities, the adjacent sub-sound absorption cavities are communicated through partition plate holes, and a plurality of micro-penetrating holes are formed in the panel. The sea snail cavity imitating sound absorption structure can achieve smaller thickness and more sound absorption peaks, is simple in structure and low in manufacturing cost, has the advantages of being easy to manufacture and convenient to optimize, and can design structural parameters in a customized mode according to the required frequency. The sea snail cavity imitating sound absorption structure not only has a low-frequency absorption peak, but also has an additional absorption peak at a relatively high-frequency position, so that the space can be utilized more effectively when broadband coupling sound absorption is realized.
本发明公开了一种基于海螺腔体构造的仿生吸声结构及其吸声单元板，仿生吸声结构包括面板、底板、隔板和腔体，腔体两端的开口通过面板和底板覆盖以形成一吸声腔，隔板上设置有隔板孔，隔板沿着吸声腔的周向布设以将吸声腔分隔为多个子吸声腔，相邻子吸声腔通过隔板孔连通，面板上设置有多个微穿孔。本发明的仿海螺腔体吸声结构可以实现更小的厚度，更多的吸声峰，结构简单、制作成本较低廉，并且同时具有易于制造和便于优化的优点，可以根据需求频率进行定制化设计结构参数。仿海螺腔体吸声结构不仅有低频吸收峰，在相对高频处还有额外的吸收峰，在实现宽频耦合吸声时，能够更加有效的利用空间。
Bionic sound absorption structure based on conch cavity structure and sound absorption unit plate thereof
一种基于海螺腔体构造的仿生吸声结构及其吸声单元板
XIE SUCHAO (author) / YANG SHICHEN (author) / YAN HONGYU (author) / LI ZHEN (author) / FENG ZHEJUN (author)
2021-07-16
Patent
Electronic Resource
Chinese
IPC:
E01F
ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
,
Zusätzliche Baumaßnahmen, wie die Ausstattung von Straßen oder die bauliche Ausbildung von Bahnsteigen, Landeplätzen für Hubschrauber, Wegweisern, Schneezäunen oder dgl.
SOUND ABSORPTION STRUCTURE AND SOUND ABSORPTION STRUCTURE BODY
| European Patent Office | 2019