ES446879A1 - Acoustic attenuator - Google Patents

Acoustic attenuator

Info

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
Application number
ES446879A
Other languages
Spanish (es)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of ES446879A1 publication Critical patent/ES446879A1/en
Expired legal-status Critical Current

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

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Exhaust Silencers (AREA)
  • Duct Arrangements (AREA)
  • Air-Flow Control Members (AREA)

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)
ES446879A 1975-04-11 1976-04-09 Acoustic attenuator Expired ES446879A1 (en)

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 (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5189972B2 (en) 2005-03-18 2013-04-24 チューメイン エンタープライジズ リミテッド Sound attenuation channel device
CN108800517B (en) * 2018-08-29 2024-05-17 正升环境科技股份有限公司 Diffusion resonance silencing device and ventilation channel silencing system
JP7385769B2 (en) * 2020-10-16 2023-11-22 株式会社日立産機システム packaged compressor
CN112555556A (en) * 2020-10-27 2021-03-26 中国原子能科学研究院 Inverted tooth type throttling element
CN114440045B (en) * 2022-03-08 2025-01-07 公元股份有限公司 A noise reduction energy dissipator for a vertical pipe

Family Cites Families (2)

* Cited by examiner, † Cited by third party
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

Also Published As

Publication number Publication date
FR2307330A1 (en) 1976-11-05
GB1536164A (en) 1978-12-20
IE42550B1 (en) 1980-08-27
IT1058802B (en) 1982-05-10
FR2307330B1 (en) 1978-02-24
BE840537A (en) 1976-10-08
IE42550L (en) 1976-10-11

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