SE0401313L - Perforated sound attenuating structure - Google Patents
Perforated sound attenuating structureInfo
- Publication number
- SE0401313L SE0401313L SE0401313A SE0401313A SE0401313L SE 0401313 L SE0401313 L SE 0401313L SE 0401313 A SE0401313 A SE 0401313A SE 0401313 A SE0401313 A SE 0401313A SE 0401313 L SE0401313 L SE 0401313L
- Authority
- SE
- Sweden
- Prior art keywords
- sound attenuating
- attenuating structure
- perforated sound
- perforated
- axial direction
- Prior art date
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N1/00—Silencing apparatus characterised by method of silencing
- F01N1/02—Silencing apparatus characterised by method of silencing by using resonance
- F01N1/023—Helmholtz resonators
Abstract
The holes (46,46') are formed between each perforated panel (42,42') at the flow path side. The perforated panels are extended to the axial direction of a cylindrical piping path (41). The partition plate (43,43') divides the axial direction of the piping path into number of closets (44,44').
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003146579 | 2003-05-23 |
Publications (3)
Publication Number | Publication Date |
---|---|
SE0401313D0 SE0401313D0 (en) | 2004-05-24 |
SE0401313L true SE0401313L (en) | 2004-11-24 |
SE525807C2 SE525807C2 (en) | 2005-05-03 |
Family
ID=32588733
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SE0401313A SE525807C2 (en) | 2003-05-23 | 2004-05-24 | Noise reduction structure for air supply piping, has holes which are formed between each perforated panel at flow path side |
Country Status (2)
Country | Link |
---|---|
CN (1) | CN1311186C (en) |
SE (1) | SE525807C2 (en) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TWI392838B (en) * | 2010-06-10 | 2013-04-11 | Univ Nat Taiwan Normal | Whistle box structure |
CN102996302B (en) * | 2012-08-11 | 2016-01-27 | 郭荣 | A kind of silencing apparatus simultaneously can eliminating wide band and narrow frequency band noise |
JP6629627B2 (en) * | 2016-02-22 | 2020-01-15 | 三菱重工業株式会社 | Noise reduction structure and supercharging device |
US10208880B2 (en) * | 2016-12-30 | 2019-02-19 | Emerson Process Management Regulator Technologies, Inc. | Noise attenuators for use with process control devices |
JP2021018357A (en) * | 2019-07-22 | 2021-02-15 | 株式会社デンソー | Sound absorption device |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN2093003U (en) * | 1991-05-10 | 1992-01-15 | 刘余厚 | Liquid ultraviolet treatment device |
JP3026694B2 (en) * | 1993-04-19 | 2000-03-27 | 河西工業株式会社 | Soundproofing materials for vehicles |
JPH0849521A (en) * | 1994-08-08 | 1996-02-20 | Hino Motors Ltd | Muffler |
CN2407133Y (en) * | 2000-01-25 | 2000-11-22 | 中国科学院声学研究所 | Tubular perforated plate sound absorption construction |
CN2494914Y (en) * | 2000-09-15 | 2002-06-12 | 上海众汇泡沫铝材有限公司 | Foam aluminium sheet type noise absorber |
CN2444295Y (en) * | 2000-09-20 | 2001-08-22 | 上海博旭复合装饰材料有限公司 | Combined sound absorption board |
JP2003050586A (en) * | 2000-09-29 | 2003-02-21 | Kobe Steel Ltd | Porous soundproof structure and method of manufacturing the same |
-
2004
- 2004-05-21 CN CNB200410047512XA patent/CN1311186C/en active Active
- 2004-05-24 SE SE0401313A patent/SE525807C2/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
CN1311186C (en) | 2007-04-18 |
SE0401313D0 (en) | 2004-05-24 |
CN1573199A (en) | 2005-02-02 |
SE525807C2 (en) | 2005-05-03 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
NUG | Patent has lapsed |