WO1987003948A1 - Device for reducing duct-carried air-borne sound - Google Patents
Device for reducing duct-carried air-borne sound Download PDFInfo
- Publication number
- WO1987003948A1 WO1987003948A1 PCT/SE1985/000540 SE8500540W WO8703948A1 WO 1987003948 A1 WO1987003948 A1 WO 1987003948A1 SE 8500540 W SE8500540 W SE 8500540W WO 8703948 A1 WO8703948 A1 WO 8703948A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- sound
- section
- casing
- cross
- passageway
- Prior art date
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
- F16L55/033—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)
- Pipe Accessories (AREA)
- Duct Arrangements (AREA)
- Exhaust Silencers (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE8406282A SE447413B (en) | 1984-12-11 | 1984-12-11 | Noise muffler for reducing conduit borne air noise |
PCT/SE1985/000540 WO1987003948A1 (en) | 1984-12-11 | 1985-12-20 | Device for reducing duct-carried air-borne sound |
EP86900679A EP0261105A1 (en) | 1984-12-11 | 1985-12-20 | Device for reducing duct-carried air-borne sound |
NO1988880116A NO880116D0 (en) | 1984-12-11 | 1988-01-12 | DEVICE FOR REDUCTION OF CHANNELABLE AIR SOUND. |
FI881922A FI881922A (en) | 1984-12-11 | 1988-04-22 | LJUDDAEMPARE FOER REDUCERING AV KANALBURET LUFTLJUD. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE8406282A SE447413B (en) | 1984-12-11 | 1984-12-11 | Noise muffler for reducing conduit borne air noise |
PCT/SE1985/000540 WO1987003948A1 (en) | 1984-12-11 | 1985-12-20 | Device for reducing duct-carried air-borne sound |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1987003948A1 true WO1987003948A1 (en) | 1987-07-02 |
Family
ID=26658834
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/SE1985/000540 WO1987003948A1 (en) | 1984-12-11 | 1985-12-20 | Device for reducing duct-carried air-borne sound |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0261105A1 (en) |
FI (1) | FI881922A (en) |
NO (1) | NO880116D0 (en) |
SE (1) | SE447413B (en) |
WO (1) | WO1987003948A1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0487481A1 (en) * | 1990-11-20 | 1992-05-27 | Valmet Paper Machinery Inc. | Absorptive sound attenuator, in particular for air ducts in paper mills |
EP0754901A1 (en) * | 1995-07-21 | 1997-01-22 | Robert Alan Gladden | Noise attenuators, their manufacture, and their use for noise attenuation in ducts |
WO2011141639A1 (en) | 2010-05-12 | 2011-11-17 | Jeven Oy | Attenuating section for sound attenuator in air conditioning duct and sound attenuator for air conditioning duct |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2620169A1 (en) * | 1976-05-07 | 1977-11-10 | Gruenzweig Hartmann Glasfaser | Sound damper for ventilation pipes - has parallel rigid pipe sections made from mineral fibres with plastic-rubber dispersion forming abrasive resistant coat |
-
1984
- 1984-12-11 SE SE8406282A patent/SE447413B/en not_active IP Right Cessation
-
1985
- 1985-12-20 EP EP86900679A patent/EP0261105A1/en not_active Withdrawn
- 1985-12-20 WO PCT/SE1985/000540 patent/WO1987003948A1/en not_active Application Discontinuation
-
1988
- 1988-01-12 NO NO1988880116A patent/NO880116D0/en unknown
- 1988-04-22 FI FI881922A patent/FI881922A/en not_active Application Discontinuation
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2620169A1 (en) * | 1976-05-07 | 1977-11-10 | Gruenzweig Hartmann Glasfaser | Sound damper for ventilation pipes - has parallel rigid pipe sections made from mineral fibres with plastic-rubber dispersion forming abrasive resistant coat |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0487481A1 (en) * | 1990-11-20 | 1992-05-27 | Valmet Paper Machinery Inc. | Absorptive sound attenuator, in particular for air ducts in paper mills |
US5260523A (en) * | 1990-11-20 | 1993-11-09 | Valmet Paper Machinery, Inc. | Absorptive sound attenuator, in particular for air ducts in paper mills |
EP0754901A1 (en) * | 1995-07-21 | 1997-01-22 | Robert Alan Gladden | Noise attenuators, their manufacture, and their use for noise attenuation in ducts |
WO2011141639A1 (en) | 2010-05-12 | 2011-11-17 | Jeven Oy | Attenuating section for sound attenuator in air conditioning duct and sound attenuator for air conditioning duct |
Also Published As
Publication number | Publication date |
---|---|
NO880116L (en) | 1988-01-12 |
NO880116D0 (en) | 1988-01-12 |
SE8406282D0 (en) | 1984-12-11 |
FI881922A0 (en) | 1988-04-22 |
EP0261105A1 (en) | 1988-03-30 |
SE8406282L (en) | 1986-06-12 |
FI881922A (en) | 1988-04-22 |
SE447413B (en) | 1986-11-10 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US4236597A (en) | Sound-absorbing device, especially for damping of noises expanding in air ducts | |
GB1406844A (en) | Sound absorbing panels | |
JPS6258006A (en) | Exhaust gas muffler | |
EP0412315B1 (en) | Sound attenuator | |
CA2957902A1 (en) | Duct mounted sound attenuating baffle with an internally suspended mass layer | |
WO1987003948A1 (en) | Device for reducing duct-carried air-borne sound | |
US4655317A (en) | Sound damping device, preferably for reducing the noise of blow-off valves | |
US3207258A (en) | Sound absorbing systems | |
US4572327A (en) | Sound attenuator | |
EP0558472B1 (en) | Improvements in attenuators | |
CN215109083U (en) | Micro-perforated silencer | |
US6283245B1 (en) | Media free sound attenuator | |
US3094188A (en) | Sound absorbers | |
US20040099477A1 (en) | Sound absorbent | |
CN114255723A (en) | Acoustic metamaterial unit cell and metamaterial ventilation noise reduction device comprising same | |
EP0754901B1 (en) | Noise attenuators, their manufacture, and their use for noise attenuation in ducts | |
CN113915441B (en) | Ventilating duct silencer | |
CA1143603A (en) | Branch take-off and silencer for an air distribution system | |
CN219738535U (en) | Low-frequency broadband sound absorption metamaterial structure | |
CN211604681U (en) | Sound-deadening element and sound-deadening device | |
JPH0790952A (en) | Sound absorber | |
CN112856797B (en) | Inhale sound insulation composite construction and air condition compressor | |
GB2231916A (en) | Gas flow silencer | |
JPH10301575A (en) | Silencing mechanism | |
GB2616609A (en) | Noise attenuator |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AK | Designated states |
Kind code of ref document: A1 Designated state(s): AU DK FI JP NO US |
|
AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): BE DE FR GB NL |
|
WWE | Wipo information: entry into national phase |
Ref document number: 1986900679 Country of ref document: EP |
|
WWP | Wipo information: published in national office |
Ref document number: 1986900679 Country of ref document: EP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 881922 Country of ref document: FI |
|
WWW | Wipo information: withdrawn in national office |
Ref document number: 1986900679 Country of ref document: EP |