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Sound absorption assembly for anechoic chamber and anechoic chamber
The invention discloses a sound absorption assembly for an anechoic chamber and the anechoic chamber. The sound absorption assembly for the anechoic chamber comprises a perforated outer frame and a plurality of layers of polyester fiber cotton; the perforated outer frame wraps the outer edges of the multiple layers of polyester fiber cotton; the densities of the multiple layers of polyester fiber cotton are different; the densities of the multiple layers of polyester fiber cotton are different; and the multiple layers of polyester fiber cotton are sequentially arranged along the thickness direction of the perforated outer frame. The polyester fiber cotton of different densities can absorb sound waves of different frequency bands, and based on the characteristic, the multiple layers of polyester fiber cotton of different densities are arranged in the perforated outer frame to achieve noise elimination of multi-frequency-band sound, and a sound absorption wedge does not need to be used in a matched mode. Therefore, the problems that a sound absorption structure used by an existing anechoic chamber still needs to be provided with a sound absorption wedge to achieve an anechoic chamber with the cut-off frequency below 100 Hz, only the length of the sound absorption wedge is reduced, and improvement and development need to be carried out are solved.
本发明公开了一种用于消声室的吸声组件及消声室，其中，用于消声室的吸声组件包括：穿孔外框及多层聚酯纤维棉，所述穿孔外框包裹在多个所述聚酯纤维棉的外缘，多层所述聚酯纤维棉的密度各不相同，且沿所述穿孔外框的厚度方向依次排布。密度不同的聚酯纤维棉可以吸收不同频段的声波，基于该特性，本发明在穿孔外框内设置多层不同密度的聚酯纤维棉，来实现多频段声音的消声，不需要配合吸声尖劈的使用；解决了现有消声室所用的吸声结构要实现100Hz以下截止频率的消声室仍然需要装配吸声尖劈，只是减小了吸声尖劈的长度，尚有待于改进和发展的问题。
Sound absorption assembly for anechoic chamber and anechoic chamber
The invention discloses a sound absorption assembly for an anechoic chamber and the anechoic chamber. The sound absorption assembly for the anechoic chamber comprises a perforated outer frame and a plurality of layers of polyester fiber cotton; the perforated outer frame wraps the outer edges of the multiple layers of polyester fiber cotton; the densities of the multiple layers of polyester fiber cotton are different; the densities of the multiple layers of polyester fiber cotton are different; and the multiple layers of polyester fiber cotton are sequentially arranged along the thickness direction of the perforated outer frame. The polyester fiber cotton of different densities can absorb sound waves of different frequency bands, and based on the characteristic, the multiple layers of polyester fiber cotton of different densities are arranged in the perforated outer frame to achieve noise elimination of multi-frequency-band sound, and a sound absorption wedge does not need to be used in a matched mode. Therefore, the problems that a sound absorption structure used by an existing anechoic chamber still needs to be provided with a sound absorption wedge to achieve an anechoic chamber with the cut-off frequency below 100 Hz, only the length of the sound absorption wedge is reduced, and improvement and development need to be carried out are solved.
本发明公开了一种用于消声室的吸声组件及消声室，其中，用于消声室的吸声组件包括：穿孔外框及多层聚酯纤维棉，所述穿孔外框包裹在多个所述聚酯纤维棉的外缘，多层所述聚酯纤维棉的密度各不相同，且沿所述穿孔外框的厚度方向依次排布。密度不同的聚酯纤维棉可以吸收不同频段的声波，基于该特性，本发明在穿孔外框内设置多层不同密度的聚酯纤维棉，来实现多频段声音的消声，不需要配合吸声尖劈的使用；解决了现有消声室所用的吸声结构要实现100Hz以下截止频率的消声室仍然需要装配吸声尖劈，只是减小了吸声尖劈的长度，尚有待于改进和发展的问题。
Sound absorption assembly for anechoic chamber and anechoic chamber
一种用于消声室的吸声组件及消声室
DUAN BAOHUA (author) / PENG LANG (author)
2021-10-22
Patent
Electronic Resource
Chinese
SOUND ABSORBING STRUCTURE FOR ANECHOIC CHAMBER AND ANECHOIC CHAMBER INCLUDING THE SAME
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Sound absorbing structure for anechoic chamber and anechoic chamber including the same
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