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发明公开
CN108049320A 中空板式声屏障单元板 无效 - 驳回

中空板式声屏障单元板
摘要：
一种中空板式声屏障单元板，包括背板和吸声板，其特征在于所述背板的中部带有空腔；所述背板的一面连接吸声板；所述背板的空腔与吸声板连接的内板开有透声孔；所述透声孔与背板的空腔连通构成低频吸声增强器。本发明的优越性：透声孔和空腔共同组成低频吸声增强器，改善陶粒吸声板的低频吸声性能，100～500Hz吸声系数提高50%以上，从而提高单元板的整体吸声性能。
摘要（英）：

A hollow board type sound barrier unit board comprises a back board and a sound absorption board and is characterized in that a cavity is formed in the middle portion of the back board; one face of the back board is connected with the sound absorption board; sound permeable holes are formed in an inner board, connected with the sound absorption board, of the cavity of the back board; and the soundpermeable holes communicate with the cavity of the back board to form a low-frequency sound absorption intensifier. The hollow board type sound barrier unit board has the beneficial effects that thesound permeable holes and the cavity jointly form the low-frequency sound absorption intensifier, the low-frequency sound absorption performance of a ceramsite sound absorption board is improved, the100-500 Hz sound absorption coefficient is improved by over 50%, and therefore the overall sound absorption performance of the unit board is improved.

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