Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Micro-perforated plate sound absorber with axial periodic rough surface annular micropores
The invention provides a micro-perforated panel sound absorber with axial periodic rough surface annular micropores, which comprises a micro-perforated panel, a rigid backing and a cavity between the micro-perforated panel and the rigid backing, the micro-perforated panel is provided with annular sound absorption through holes, the forming direction of the annular sound absorption through holes is perpendicular to the micro-perforated panel, and the annular sound absorption through holes are communicated with the cavity. The axial periodical rough surface form of the annular sound absorption through holes formed in the micro-perforated panel is controlled by a function. The sound absorption device is simple in structure, light in weight and high in sound absorption coefficient at medium and low frequency bands, the sound absorption frequency bands are flexibly and effectively adjusted through reasonable design of the structure, the sound absorption performance of the corresponding frequency bands is improved, and the sound absorption device has wide engineering application prospects.
本发明提供了一种带轴向周期性粗糙表面环形微孔的微穿孔板吸声体，包括微穿孔面板和刚性背衬，以及微穿孔面板和刚性背衬之间的空腔，所述微穿孔面板上设有环形吸声通孔，环形吸声通孔开设方向均垂直于微穿孔面板，微穿孔面板上设有的环形吸声通孔的轴向周期性粗糙表面形态由函数控制。本发明结构简单，质量轻，中低频段吸声系数高，通过结构的合理设计，灵活有效地调节吸声频段、改善对应频段的吸声性能，具有广泛的工程应用前景。
Micro-perforated plate sound absorber with axial periodic rough surface annular micropores
The invention provides a micro-perforated panel sound absorber with axial periodic rough surface annular micropores, which comprises a micro-perforated panel, a rigid backing and a cavity between the micro-perforated panel and the rigid backing, the micro-perforated panel is provided with annular sound absorption through holes, the forming direction of the annular sound absorption through holes is perpendicular to the micro-perforated panel, and the annular sound absorption through holes are communicated with the cavity. The axial periodical rough surface form of the annular sound absorption through holes formed in the micro-perforated panel is controlled by a function. The sound absorption device is simple in structure, light in weight and high in sound absorption coefficient at medium and low frequency bands, the sound absorption frequency bands are flexibly and effectively adjusted through reasonable design of the structure, the sound absorption performance of the corresponding frequency bands is improved, and the sound absorption device has wide engineering application prospects.
本发明提供了一种带轴向周期性粗糙表面环形微孔的微穿孔板吸声体，包括微穿孔面板和刚性背衬，以及微穿孔面板和刚性背衬之间的空腔，所述微穿孔面板上设有环形吸声通孔，环形吸声通孔开设方向均垂直于微穿孔面板，微穿孔面板上设有的环形吸声通孔的轴向周期性粗糙表面形态由函数控制。本发明结构简单，质量轻，中低频段吸声系数高，通过结构的合理设计，灵活有效地调节吸声频段、改善对应频段的吸声性能，具有广泛的工程应用前景。
Micro-perforated plate sound absorber with axial periodic rough surface annular micropores
一种带轴向周期性粗糙表面环形微孔的微穿孔板吸声体
SHEN CHENG (Autor:in) / YANG SHASHA (Autor:in)
31.05.2022
Patent
Elektronische Ressource
Chinesisch
Partition perforated square tube space sound absorber
| Europäisches Patentamt | 2021