JP4245542B2 - 多孔板吸音構造体 - Google Patents
多孔板吸音構造体 Download PDFInfo
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- JP4245542B2 JP4245542B2 JP2004301020A JP2004301020A JP4245542B2 JP 4245542 B2 JP4245542 B2 JP 4245542B2 JP 2004301020 A JP2004301020 A JP 2004301020A JP 2004301020 A JP2004301020 A JP 2004301020A JP 4245542 B2 JP4245542 B2 JP 4245542B2
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- sound
- absorbing structure
- plate
- perforated plate
- sound absorbing
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- Soundproofing, Sound Blocking, And Sound Damping (AREA)
Description
2 内装板
3,30 空気層(空気室)
4 貫通穴
5 隔壁
10,10´,20 多孔板吸音構造体
Claims (2)
- 外装板と多数の貫通穴を有した内装板とが対向配置され、前記内装板の板厚、前記貫通穴の直径及び開口率が、前記貫通穴を通過する空気に粘性減衰作用を発生させるように設定された多孔板吸音構造体において、
前記外装板と前記内装板との間には、両者を連結する複数の隔壁が形成されており、
前記複数の隔壁が、前記両者間を前記内装板の面方向に平行な方向に沿って複数の空気室に仕切り、
複数の前記空気室の幅をW、吸音する音の特定周波数の波長をλとするとき、0.5n(n:正の整数)+0.03<W/λ<0.5(n+1)−0.03の関係を満たすことを特徴とする多孔板吸音構造体。 - 複数の前記空気室が、吸音する音の複数の特定周波数の波長に対応してそれぞれ異なる幅を有していることを特徴とする請求項1に記載の多孔板吸音構造体。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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JP2004301020A JP4245542B2 (ja) | 2004-10-15 | 2004-10-15 | 多孔板吸音構造体 |
Applications Claiming Priority (1)
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JP2004301020A JP4245542B2 (ja) | 2004-10-15 | 2004-10-15 | 多孔板吸音構造体 |
Publications (2)
Publication Number | Publication Date |
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JP2006113323A JP2006113323A (ja) | 2006-04-27 |
JP4245542B2 true JP4245542B2 (ja) | 2009-03-25 |
Family
ID=36381889
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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JP2004301020A Active JP4245542B2 (ja) | 2004-10-15 | 2004-10-15 | 多孔板吸音構造体 |
Country Status (1)
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JP (1) | JP4245542B2 (ja) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009046062A (ja) * | 2007-08-22 | 2009-03-05 | Nippon Sharyo Seizo Kaisha Ltd | 鉄道車両 |
CN201725563U (zh) * | 2010-07-22 | 2011-01-26 | 姚庆云 | 声源静音板 |
WO2015157878A1 (zh) * | 2014-04-18 | 2015-10-22 | 姚庆云 | 声源静音版 |
JP6382592B2 (ja) * | 2014-06-23 | 2018-08-29 | フクビ化学工業株式会社 | 吸音パネル |
CN108463092B (zh) * | 2017-02-22 | 2021-06-08 | 中兴通讯股份有限公司 | 一种降噪装置和机柜 |
JP2019204010A (ja) * | 2018-05-24 | 2019-11-28 | 株式会社デンソー | 吸音構造体 |
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2004
- 2004-10-15 JP JP2004301020A patent/JP4245542B2/ja active Active
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JP2006113323A (ja) | 2006-04-27 |
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