Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Multilayer porous flexible sound absorption and insulation board
The invention relates to the technical field of sound insulation and noise reduction, in particular to a multilayer porous flexible sound absorption and insulation board. The multilayer porous flexible sound absorption and insulation board comprises a sound insulation layer, wherein a sound absorption layer is arranged on at least one side surface of the sound insulation layer and comprises multiple sub sound absorption layers which are overlapped, the bottom sub sound absorption layer is attached to the side surface of the sound insulation layer, through holes are respectively formed in the multiple sub sound absorption layers, the hole diameters of the through holes formed in every two adjacent sub sound absorption layers are different, noise generates friction and heat conduction with the hole walls of the through holes in the through holes, and sound energy is converted into heat energy to be transmitted to the sound absorption layer, so that the noise is weakened, and additionally, the noise generates resonance in the through holes, so that the noise is further absorbed by the sound absorption layer; and when the noise reaches the sound insulation layer after passing through the sound absorption layer, the noise is blocked by the sound insulation layer, and the sound insulation and noise reduction functions of the sound absorption and insulation board are further enhanced.
本发明涉及隔音降噪技术领域，特别涉及一种多层多孔柔性吸隔声板，包括隔声层，所述隔声层至少有一侧面设有吸声层，所述吸声层包括多层子吸声层，所述多层子吸声层之间相互重叠，底层子吸声层与隔声层的侧面相互贴合，所述多层子吸声层上均开设有通孔，相邻两层子吸声层开设的通孔孔径不相等，噪声在通孔内与通孔的孔壁产生摩擦和热传导，将声能转化为热能传输给吸声层，从而削弱噪声，同时噪声在通孔内产生共振，使得噪声进一步的被吸声层吸收，当噪音通过吸声层后到达隔声层，隔声层对噪音进行阻隔，进一步的增强吸隔声板的隔音降噪的功能。
Multilayer porous flexible sound absorption and insulation board
The invention relates to the technical field of sound insulation and noise reduction, in particular to a multilayer porous flexible sound absorption and insulation board. The multilayer porous flexible sound absorption and insulation board comprises a sound insulation layer, wherein a sound absorption layer is arranged on at least one side surface of the sound insulation layer and comprises multiple sub sound absorption layers which are overlapped, the bottom sub sound absorption layer is attached to the side surface of the sound insulation layer, through holes are respectively formed in the multiple sub sound absorption layers, the hole diameters of the through holes formed in every two adjacent sub sound absorption layers are different, noise generates friction and heat conduction with the hole walls of the through holes in the through holes, and sound energy is converted into heat energy to be transmitted to the sound absorption layer, so that the noise is weakened, and additionally, the noise generates resonance in the through holes, so that the noise is further absorbed by the sound absorption layer; and when the noise reaches the sound insulation layer after passing through the sound absorption layer, the noise is blocked by the sound insulation layer, and the sound insulation and noise reduction functions of the sound absorption and insulation board are further enhanced.
本发明涉及隔音降噪技术领域，特别涉及一种多层多孔柔性吸隔声板，包括隔声层，所述隔声层至少有一侧面设有吸声层，所述吸声层包括多层子吸声层，所述多层子吸声层之间相互重叠，底层子吸声层与隔声层的侧面相互贴合，所述多层子吸声层上均开设有通孔，相邻两层子吸声层开设的通孔孔径不相等，噪声在通孔内与通孔的孔壁产生摩擦和热传导，将声能转化为热能传输给吸声层，从而削弱噪声，同时噪声在通孔内产生共振，使得噪声进一步的被吸声层吸收，当噪音通过吸声层后到达隔声层，隔声层对噪音进行阻隔，进一步的增强吸隔声板的隔音降噪的功能。
Multilayer porous flexible sound absorption and insulation board
一种多层多孔柔性吸隔声板
XIAO WANGQIANG (Autor:in) / LIU YONGGAO (Autor:in) / ZHU WEIJIAN (Autor:in)
02.04.2021
Patent
Elektronische Ressource
Chinesisch
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