ES446879A1 - Acoustic attenuator - Google Patents
Acoustic attenuatorInfo
- Publication number
- ES446879A1 ES446879A1 ES446879A ES446879A ES446879A1 ES 446879 A1 ES446879 A1 ES 446879A1 ES 446879 A ES446879 A ES 446879A ES 446879 A ES446879 A ES 446879A ES 446879 A1 ES446879 A1 ES 446879A1
- Authority
- ES
- Spain
- Prior art keywords
- fins
- axial direction
- trailing edges
- levels
- duct element
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/02—Energy absorbers; Noise absorbers
- F16L55/027—Throttle passages
- F16L55/02736—Throttle passages using transversal baffles defining a tortuous path
Abstract
An acoustic attenuating device, especially insertable in an air duct, comprising a duct element with a rectilinear axis or with continuous curvature, in which they are arranged one after the other in the axial direction of said duct element, at least three levels of deflector fins, parallel and regularly spaced, characterized in that the respective fins of two successive levels are flat and arranged so that they are symmetrically inclined over said axial direction at a similar angle, preferably of ± 45 °, so that the trailing edge of each fin of the first level is substantially in the same plane as the trailing edges of the fins of the next level and substantially in the middle of the interval between said closest trailing edges. (Machine-translation by Google Translate, not legally binding)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7511416A FR2307330A1 (en) | 1975-04-11 | 1975-04-11 | ACOUSTIC ATTENUATOR, ESPECIALLY INSERABLE IN AN AIR DUCT |
Publications (1)
Publication Number | Publication Date |
---|---|
ES446879A1 true ES446879A1 (en) | 1977-06-01 |
Family
ID=9153836
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES446879A Expired ES446879A1 (en) | 1975-04-11 | 1976-04-09 | Acoustic attenuator |
Country Status (6)
Country | Link |
---|---|
BE (1) | BE840537A (en) |
ES (1) | ES446879A1 (en) |
FR (1) | FR2307330A1 (en) |
GB (1) | GB1536164A (en) |
IE (1) | IE42550B1 (en) |
IT (1) | IT1058802B (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
RU2425989C2 (en) * | 2005-03-18 | 2011-08-10 | Тьюмейн Энтерпрайзиз Лимитед | Sound absorbing flow-though channel device |
CN108800517A (en) * | 2018-08-29 | 2018-11-13 | 正升环境科技股份有限公司 | Spread resonance muffler device and vent passages sound-attenuating system |
CN112555556A (en) * | 2020-10-27 | 2021-03-26 | 中国原子能科学研究院 | Inverted tooth type throttling element |
CN114440045A (en) * | 2022-03-08 | 2022-05-06 | 公元股份有限公司 | Noise-reducing energy dissipater of vertical pipe |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR921160A (en) * | 1945-10-31 | 1947-04-29 | Travaux Souterrains | Advanced soundproofing channel |
CH335132A (en) * | 1951-08-30 | 1958-12-31 | Canadian Patents Dev | Installation to damp the noise generated by a gas jet escaping from a nozzle |
-
1975
- 1975-04-11 FR FR7511416A patent/FR2307330A1/en active Granted
-
1976
- 1976-04-08 IE IE73576A patent/IE42550B1/en unknown
- 1976-04-08 BE BE165973A patent/BE840537A/en unknown
- 1976-04-09 IT IT6784076A patent/IT1058802B/en active
- 1976-04-09 ES ES446879A patent/ES446879A1/en not_active Expired
- 1976-04-09 GB GB1460076A patent/GB1536164A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
BE840537A (en) | 1976-10-08 |
FR2307330A1 (en) | 1976-11-05 |
IE42550B1 (en) | 1980-08-27 |
FR2307330B1 (en) | 1978-02-24 |
IT1058802B (en) | 1982-05-10 |
IE42550L (en) | 1976-10-11 |
GB1536164A (en) | 1978-12-20 |
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