Broad-band noise insulation honeycomb plate
A honeycomb panel and broadband technology, applied in the field of broadband sound-proof honeycomb panels, can solve the problems of difficulty in dealing with low-frequency noise and decline in sound insulation performance, and achieve the effect of widening the sound absorption band, reducing product weight, and meeting lightweight requirements
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[0027] The present invention will be further described below in conjunction with the accompanying drawings.
[0028] like figure 1 and figure 2 The shown broadband sound insulation honeycomb panel is formed by bonding a first orifice plate 4, a first honeycomb core 1, an elastic film 3, a second honeycomb core 2, and a second orifice plate 5 in sequence. A number of first cavities 8 are distributed, a number of second cavities 9 corresponding to the first cavities 8 are distributed on the second honeycomb core 2 , and a number of the first cavities 8 are distributed on the first orifice plate 4 . The connected first micro-perforations 6 and the second orifice plate 5 are distributed with second micro-perforations 7 which are in communication with the second cavity 9 . Since the first cavities 8 and the second cavities 9 are in one-to-one correspondence, the first honeycomb core 1 and the second honeycomb core 2 divide the elastic film 3 into several elastic units. The cavi...
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