IT998103B - NOISE ATTENUATION EQUIPMENT - Google Patents
NOISE ATTENUATION EQUIPMENTInfo
- Publication number
- IT998103B IT998103B IT23534/73A IT2353473A IT998103B IT 998103 B IT998103 B IT 998103B IT 23534/73 A IT23534/73 A IT 23534/73A IT 2353473 A IT2353473 A IT 2353473A IT 998103 B IT998103 B IT 998103B
- Authority
- IT
- Italy
- Prior art keywords
- noise attenuation
- attenuation equipment
- equipment
- noise
- attenuation
- Prior art date
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N1/00—Silencing apparatus characterised by method of silencing
- F01N1/02—Silencing apparatus characterised by method of silencing by using resonance
- F01N1/04—Silencing apparatus characterised by method of silencing by using resonance having sound-absorbing materials in resonance chambers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N1/00—Silencing apparatus characterised by method of silencing
- F01N1/003—Silencing apparatus characterised by method of silencing by using dead chambers communicating with gas flow passages
-
- 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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Exhaust Silencers (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US24867672A | 1972-04-28 | 1972-04-28 |
Publications (1)
Publication Number | Publication Date |
---|---|
IT998103B true IT998103B (en) | 1976-01-20 |
Family
ID=22940179
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
IT23534/73A IT998103B (en) | 1972-04-28 | 1973-04-27 | NOISE ATTENUATION EQUIPMENT |
Country Status (9)
Country | Link |
---|---|
US (1) | US3776364A (en) |
JP (1) | JPS4941738A (en) |
AU (1) | AU472372B2 (en) |
CA (1) | CA981130A (en) |
DE (1) | DE2321649C2 (en) |
FR (1) | FR2182463A5 (en) |
GB (1) | GB1431662A (en) |
IT (1) | IT998103B (en) |
SU (1) | SU576972A3 (en) |
Families Citing this family (30)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3946558A (en) * | 1973-08-06 | 1976-03-30 | Beekhuis Jr William H | Exhaust system and method |
JPS5095632A (en) * | 1973-12-25 | 1975-07-30 | ||
JPS526808U (en) * | 1975-07-02 | 1977-01-18 | ||
JPS55130581A (en) * | 1979-03-30 | 1980-10-09 | Sharp Kk | Display system |
JPS6146169Y2 (en) * | 1981-02-27 | 1986-12-25 | ||
JPS57139624U (en) * | 1981-02-27 | 1982-09-01 | ||
SE450656B (en) * | 1982-05-14 | 1987-07-13 | Bahco Ventilation Ab | Muffler for ventilation ducts or ventilation equipment |
FR2543342B1 (en) * | 1983-03-21 | 1986-10-17 | Centre Techn Ind Mecanique | ANECHICAL NOISE ATTENUATING DEVICE FOR LIQUID PIPES AND METHOD AND CIRCUIT USING THE SAME TO MEASURE THE ENERGY EMITTED BY HYDRAULIC EQUIPMENT |
IT206464Z2 (en) * | 1986-02-27 | 1987-08-10 | Alfa Romeo Spa | EXHAUST SYSTEM FOR A C.I. ENGINE |
US5123501A (en) * | 1988-10-21 | 1992-06-23 | Donaldson Company, Inc. | In-line constricted sound-attenuating system |
SE510530C2 (en) * | 1993-03-05 | 1999-05-31 | Volvo Ab | Device for sound attenuation in a duct system |
DE19612572A1 (en) * | 1996-03-29 | 1997-10-02 | Fraunhofer Ges Forschung | Cleanable silencer for low frequencies |
US6082487A (en) * | 1998-02-13 | 2000-07-04 | Donaldson Company, Inc. | Mufflers for use with engine retarders; and methods |
CA2318534A1 (en) | 1998-02-13 | 1999-08-19 | Ted J. Wiegandt | Mufflers for use with engine retarders; and methods |
US6148519A (en) * | 1998-09-18 | 2000-11-21 | Donaldson Company, Inc. | Apparatus for installing a packing material in a muffler assembly; and methods thereof |
US6332511B1 (en) | 1999-12-07 | 2001-12-25 | Burgess-Manning, Inc. | Silencer assembly having single strand fiberglass acoustic pack material |
US7174707B2 (en) * | 2000-06-09 | 2007-02-13 | Volvo Lastvagnar Ab | Regeneration of a filter by the use of a tone generator |
DE102004006647B4 (en) * | 2003-02-14 | 2015-02-26 | IfTA Ingenieurbüro für Thermoakustik GmbH | Method and device for discharging exhaust gas |
WO2005097244A1 (en) * | 2004-04-05 | 2005-10-20 | Breas Medical Ab | Ventilator for supplying breathable gas to a patient, and a noise reduction method for said ventilator |
FR2878894B1 (en) * | 2004-12-08 | 2010-12-17 | Faurecia Sys Echappement | EXHAUST VOLUME |
DE102006008941A1 (en) * | 2006-02-23 | 2007-08-30 | J. Eberspächer GmbH & Co. KG | Silencer for an exhaust system |
DE102006024839A1 (en) * | 2006-05-24 | 2007-11-29 | Seleon Gmbh | Feed unit and conveying process |
US20100051379A1 (en) * | 2008-09-02 | 2010-03-04 | Charles Graves | Enhanced Exhaust System |
DE102011009966B4 (en) * | 2011-02-01 | 2021-05-20 | IfTA Ingenieurbüro für Thermoakustik GmbH | Combustion system with cultivation |
US8393437B2 (en) * | 2011-02-15 | 2013-03-12 | Westinghouse Electric Company Llc | Noise and vibration mitigation system for nuclear reactors employing an acoustic side branch resonator |
CN103696828A (en) * | 2014-01-04 | 2014-04-02 | 诸城市海得威机械有限公司 | High-frequency noise eliminating silencer for engineering vehicle |
GB2528950A (en) * | 2014-08-06 | 2016-02-10 | Aaf Ltd | Sound suppression apparatus |
US9618151B2 (en) | 2015-02-26 | 2017-04-11 | Adriaan DeVilliers | Compact modular low resistance broadband acoustic silencer |
DE102015214709A1 (en) * | 2015-07-31 | 2017-02-02 | Mahle International Gmbh | Flow channel and ventilation, heating or air conditioning |
CN109899132A (en) * | 2017-12-11 | 2019-06-18 | 郑州宇通客车股份有限公司 | Exhaust pipe preprocessor and vehicle |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1054690A (en) * | 1900-01-01 | |||
US1638309A (en) * | 1922-04-13 | 1927-08-09 | Thomas S Kemble | Muffler construction |
US1949667A (en) * | 1932-05-07 | 1934-03-06 | Transiskus Theodore | Exhaust silencer |
US2297046A (en) * | 1939-08-25 | 1942-09-29 | Maxim Silencer Co | Means for preventing shock excitation of acoustic conduits or chambers |
GB602859A (en) * | 1946-04-24 | 1948-06-03 | Cecil Gordon Vokes | Improvements in silencers |
US2871452A (en) * | 1953-04-23 | 1959-01-27 | Hewlett Packard Co | Broad band waveguide directional coupler |
US2820203A (en) * | 1954-03-18 | 1958-01-14 | Sperry Rand Corp | Directional couplers |
GB789784A (en) * | 1955-04-18 | 1958-01-29 | Applic Ind Commerciales Et Imm | Improvements in and relating to exhaust silencers |
US3113635A (en) * | 1959-03-31 | 1963-12-10 | Bolt Beranek & Newman | Apparatus for silencing vibrational energy |
US3212603A (en) * | 1963-10-24 | 1965-10-19 | Walker Mfg Co | Muffler with tuned silencing chambers |
US3263772A (en) * | 1964-06-17 | 1966-08-02 | Arvin Ind Inc | Sound attenuating gas conduit with one-quarter wave-length side branch chambers |
US3289786A (en) * | 1965-05-17 | 1966-12-06 | Walker Mfg Co | Muffler with return bend tuning passage |
US3289785A (en) * | 1965-10-04 | 1966-12-06 | Walker Mfg Co | Silencer with outer housing contacting inner conduit to define resonance chambers |
US3382948A (en) * | 1965-10-13 | 1968-05-14 | Walker Mfg Co | Mufflers with side branch tuning chambers |
GB1180218A (en) * | 1966-08-02 | 1970-02-04 | Marconi Co Ltd | Improvements in or relating to Dispersive Devices |
-
1972
- 1972-04-28 US US00248676A patent/US3776364A/en not_active Expired - Lifetime
-
1973
- 1973-04-17 FR FR7313861A patent/FR2182463A5/fr not_active Expired
- 1973-04-17 AU AU54597/73A patent/AU472372B2/en not_active Expired
- 1973-04-25 GB GB1971173A patent/GB1431662A/en not_active Expired
- 1973-04-25 CA CA169,525A patent/CA981130A/en not_active Expired
- 1973-04-26 JP JP48046808A patent/JPS4941738A/ja active Pending
- 1973-04-26 SU SU7301910518A patent/SU576972A3/en active
- 1973-04-27 IT IT23534/73A patent/IT998103B/en active
- 1973-04-28 DE DE2321649A patent/DE2321649C2/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
GB1431662A (en) | 1976-04-14 |
DE2321649A1 (en) | 1973-11-15 |
DE2321649C2 (en) | 1981-09-17 |
US3776364A (en) | 1973-12-04 |
FR2182463A5 (en) | 1973-12-07 |
AU472372B2 (en) | 1976-05-20 |
CA981130A (en) | 1976-01-06 |
AU5459773A (en) | 1974-10-17 |
SU576972A3 (en) | 1977-10-15 |
JPS4941738A (en) | 1974-04-19 |
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