FR2348429A1 - SLIDE SILENCER - Google Patents

SLIDE SILENCER

Info

Publication number
FR2348429A1
FR2348429A1 FR7711590A FR7711590A FR2348429A1 FR 2348429 A1 FR2348429 A1 FR 2348429A1 FR 7711590 A FR7711590 A FR 7711590A FR 7711590 A FR7711590 A FR 7711590A FR 2348429 A1 FR2348429 A1 FR 2348429A1
Authority
FR
France
Prior art keywords
mutually opposite
sound
different
splitters
coverings
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.)
Withdrawn
Application number
FR7711590A
Other languages
French (fr)
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.)
Saint Gobain Isover G+H AG
Original Assignee
Gruenzweig und Hartmann AG
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 Gruenzweig und Hartmann AG filed Critical Gruenzweig und Hartmann AG
Publication of FR2348429A1 publication Critical patent/FR2348429A1/en
Withdrawn legal-status Critical Current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
    • F16L9/00—Rigid pipes
    • F16L9/21—Rigid pipes made of sound-absorbing materials or with sound-absorbing structure
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Mechanical Engineering (AREA)
  • Building Environments (AREA)
  • Exhaust Silencers (AREA)

Abstract

The acoustic input conductances of the mutually opposite sound-absorbing margins are different from one another. This difference in the acoustic input conductances of mutually opposite duct sides is constant or at least constant in sections in the sound propagation direction. To this end, either partitions (4), which are arranged outside the splitter centre, are arranged inside the splitters (1), or different coverings of the mutually opposite splitter coverings are formed, or materials with different flow resistances or adjacently lying alternate arrangements of splitters are formed. With this, during the sound propagation, energy is constantly drawn off from the symmetrical wave form which can only be weakly damped and is changed into the antisymmetrical wave form which is provided with greater propagation damping because in this manner an increased damping of the entire sound field results overall.
FR7711590A 1976-04-17 1977-04-18 SLIDE SILENCER Withdrawn FR2348429A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19762617000 DE2617000B2 (en) 1976-04-17 1976-04-17 Backdrops air silencer

Publications (1)

Publication Number Publication Date
FR2348429A1 true FR2348429A1 (en) 1977-11-10

Family

ID=5975650

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7711590A Withdrawn FR2348429A1 (en) 1976-04-17 1977-04-18 SLIDE SILENCER

Country Status (6)

Country Link
AT (1) AT361751B (en)
BE (1) BE853655A (en)
CH (1) CH619804A5 (en)
DE (1) DE2617000B2 (en)
FR (1) FR2348429A1 (en)
NL (1) NL7704011A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0315710A1 (en) * 1987-11-11 1989-05-17 Nitto Boseki Co., Ltd. Sound absorbing pipe
US4899846A (en) * 1986-05-19 1990-02-13 Nitto Boseki Co., Ltd. Sound absorbing pipe

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3425450A1 (en) * 1983-09-22 1985-04-04 Rox Lufttechnische Gerätebau GmbH, 5000 Köln Equipment silencer
DE3544022A1 (en) * 1985-12-13 1987-06-19 Wakofix Montagebau Gmbh & Co K Sound damper for smoke-exhaust and venting ducts
DE3604695A1 (en) * 1986-02-14 1987-08-20 Bayer Ag Waste-gas chimney with resonator/absorber sound damper arranged therein
DE3707650C1 (en) * 1987-03-10 1988-06-09 Fraunhofer Ges Forschung Sound absorber for scenery
FI95747B (en) * 1991-01-17 1995-11-30 Valmet Paper Machinery Inc Mufflers for low frequencies for air ducts in paper mills
DE102006032259B3 (en) * 2006-07-12 2007-07-05 Frenzelit-Werke Gmbh & Co. Kg Connection element for damping noises of power station turbines, has completely or partly sound-permeable outer skin made from textile sheet material, produced from glass fibers or high temperature glass fiber or from its mixtures
DE102008047272A1 (en) * 2008-09-16 2010-03-25 Ltg Aktiengesellschaft Air line element i.e. noise reduction element, has baffle-type silencer assigned to region of interior side of layer, where specific weight of sound damming material is larger than that of sound absorbing material
DE102009034463A1 (en) 2009-07-22 2011-02-03 Filtro Klimatechnik Gmbh Airborne sound absorbing device, particularly for use in air conditioning units, comprises sound absorbing bodies arranged in air flow channel or housing, where cover is designed at end of front side of sound absorbing body

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB750974A (en) * 1953-06-02 1956-06-20 Maxim Silencer Co Improvements in silencers for gaseous currents

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT124595B (en) * 1928-06-02 1931-09-25 Burgess Lab Inc C F Silencer.
US2046193A (en) * 1931-01-03 1936-06-30 Burgess Lab Inc C F Muffler
NL262265A (en) * 1960-03-11 1900-01-01
FR1381570A (en) * 1963-10-31 1964-12-14 Spiral duct silencer for flowing gaseous media
DE1260869B (en) * 1964-02-04 1968-02-08 Gerber Schall Schwingungstech Soundproof backdrop for exhaust pipes
GB1192194A (en) * 1966-08-05 1970-05-20 Chiyoda Chem Eng Construct Co Silencer for Suction or Discharge of Fluids Unders Pressure
GB1242864A (en) * 1968-05-15 1971-08-18 Dunlop Holdings Ltd Acoustical elements
DE2303611B2 (en) * 1973-01-25 1977-08-04 Vasiljevic, Costa Silard, Dipl.-Ing. Dr, 7400 Tübingen SILENCER

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB750974A (en) * 1953-06-02 1956-06-20 Maxim Silencer Co Improvements in silencers for gaseous currents

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4899846A (en) * 1986-05-19 1990-02-13 Nitto Boseki Co., Ltd. Sound absorbing pipe
EP0315710A1 (en) * 1987-11-11 1989-05-17 Nitto Boseki Co., Ltd. Sound absorbing pipe

Also Published As

Publication number Publication date
DE2617000B2 (en) 1981-04-02
CH619804A5 (en) 1980-10-15
AT361751B (en) 1981-03-25
BE853655A (en) 1977-08-01
ATA265477A (en) 1980-08-15
NL7704011A (en) 1977-10-19
DE2617000A1 (en) 1977-10-20

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Legal Events

Date Code Title Description
ST Notification of lapse