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GB1383354A - Silencing fluid flow - Google Patents

Silencing fluid flow

Info

Publication number
GB1383354A
GB1383354A GB4224372A GB4224372A GB1383354A GB 1383354 A GB1383354 A GB 1383354A GB 4224372 A GB4224372 A GB 4224372A GB 4224372 A GB4224372 A GB 4224372A GB 1383354 A GB1383354 A GB 1383354A
Authority
GB
United Kingdom
Prior art keywords
baffles
silenced
walls
duct
sound
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
GB4224372A
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.)
Bolt Beranek and Newman Inc
Original Assignee
Bolt Beranek and Newman Inc
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 Bolt Beranek and Newman Inc filed Critical Bolt Beranek and Newman Inc
Publication of GB1383354A publication Critical patent/GB1383354A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/172—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using resonance effects
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02K—JET-PROPULSION PLANTS
    • F02K1/00—Plants characterised by the form or arrangement of the jet pipe or nozzle; Jet pipes or nozzles peculiar thereto
    • F02K1/78—Other construction of jet pipes
    • F02K1/82—Jet pipe walls, e.g. liners
    • F02K1/827—Sound absorbing structures or liners
    • 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
    • F16L55/033—Noise absorbers
    • F16L55/0336—Noise absorbers by means of sound-absorbing materials

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Exhaust Silencers (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)
  • Pipe Accessories (AREA)

Abstract

1383354 Silencing gaseous flow BOLT BERANEK and NEWMAN Inc 12 Sept 1972 [13 Dec 1971] 42243/72 Heading F1B A fluid medium flowing through a duct I is silenced by passage between a plurality of longitudinally extending sound-absorbing baffles 3 and the provision of chambers 7 communicating with the duct through sound-absorbing duct walls 5. The baffles 3 and walls 5 permit the passage of sound therethrough. The baffles 3 may extend in a direction perpendicular to the walls 5, Fig. 4 (not shown). Frequencies from 20 Hz to the upper end of the audio range are silenced and the spacing and length the baffles 3 may be small and large respectively compared to the wave length of the high frequencies silenced. Silencing gas turbines is mentioned in the Specification.
GB4224372A 1971-12-13 1972-09-12 Silencing fluid flow Expired GB1383354A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US20700871A 1971-12-13 1971-12-13

Publications (1)

Publication Number Publication Date
GB1383354A true GB1383354A (en) 1974-02-12

Family

ID=22768834

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4224372A Expired GB1383354A (en) 1971-12-13 1972-09-12 Silencing fluid flow

Country Status (7)

Country Link
US (1) US3738448A (en)
JP (1) JPS4865312A (en)
CA (1) CA964139A (en)
DE (1) DE2255428A1 (en)
FR (1) FR2165436A5 (en)
GB (1) GB1383354A (en)
IT (1) IT987575B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2001135A (en) * 1977-07-13 1979-01-24 Carrier Corp Pressure variation absorber
GB2136502A (en) * 1983-03-17 1984-09-19 Chillcotts Ltd Internal combustion engine exhaust silencer

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5417681Y2 (en) * 1973-11-27 1979-07-06
JPS50106532U (en) * 1974-01-31 1975-09-01
DE3521941C2 (en) * 1985-06-19 1994-02-03 Stahl & Sohn Gmbh & Co Kg Device for silencing an oscillating burner
US4747467A (en) * 1986-04-01 1988-05-31 Allied-Signal Inc. Turbine engine noise suppression apparatus and methods
US5276291A (en) * 1992-07-10 1994-01-04 Norris Thomas R Acoustic muffler for high volume fluid flow utilizing Heimholtz resonators with low flow resistance path
US5661272A (en) * 1995-01-27 1997-08-26 Iannetti; Francesco E. Engine noise reduction apparatus
US5962821A (en) * 1995-01-27 1999-10-05 Iannetti; Francesco E. Internal combustion engine noise reduction apparatus
CH691191A5 (en) * 2000-01-06 2001-05-15 Rudolf Ing Htl Gehring Rotating joint designed as slide bearing, comprising inner or outer ring made of heavy sheet metal
DE50110932D1 (en) 2000-12-08 2006-10-19 Alstom Technology Ltd Exhaust system with Helmholtz resonator
DE602004008774T2 (en) * 2003-05-02 2008-06-12 Owens-Corning, Toledo MUFFLER WITH IMPROVED ACOUSTIC POWER AT LOW AND MEDIUM FREQUENCIES
JP4937730B2 (en) * 2006-09-22 2012-05-23 株式会社キングジム Binding tool and filing tool
FI122523B (en) * 2008-04-30 2012-03-15 Metso Paper Inc Low-frequency silencer, a method for manufacturing a low-frequency silencer, and a system for low-frequency silencers, for example, in air-conditioning ducts for paper mills
JP5215735B2 (en) * 2008-05-30 2013-06-19 三菱重工業株式会社 Gas turbine exhaust equipment

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2051515A (en) * 1935-10-07 1936-08-18 Maxim Silencer Co Sound attenuating device
DE977514C (en) * 1952-11-12 1966-11-03 Lothar Dr-Ing Cremer Sound absorption filter for gas pipes, especially ventilation pipes
GB783055A (en) * 1955-03-01 1957-09-18 Werner Genest Ges Fuer Isolier Improvements in or relating to sound absorbers for induction and exhaust ducts of power unit and compressor testing stations
DE1095504B (en) * 1955-03-18 1960-12-22 Nordwestdeutscher Rundfunk Absorption damper for air conditioning or ventilation systems
US2989136A (en) * 1959-04-14 1961-06-20 Wohlberg George Sound attenuation
AT226480B (en) * 1960-01-14 1963-03-25 Gruenzweig & Hartmann silencer
AT254465B (en) * 1963-12-09 1967-05-26 Lothar Dr Ing Cremer Absorption silencers for gas pipes, in particular ventilation pipes
DE1200007B (en) * 1964-07-24 1965-09-02 Gerber Schall Schwingungstech Sound absorber with a backdrop for attenuating noise emitted from a wall opening or the like

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2001135A (en) * 1977-07-13 1979-01-24 Carrier Corp Pressure variation absorber
GB2001135B (en) * 1977-07-13 1982-01-27 Carrier Corp Pressure variation absorber
GB2136502A (en) * 1983-03-17 1984-09-19 Chillcotts Ltd Internal combustion engine exhaust silencer

Also Published As

Publication number Publication date
JPS4865312A (en) 1973-09-08
IT987575B (en) 1975-03-20
FR2165436A5 (en) 1973-08-03
DE2255428A1 (en) 1973-06-28
US3738448A (en) 1973-06-12
CA964139A (en) 1975-03-11

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees