NO931802L - Dempeledd - Google Patents
DempeleddInfo
- Publication number
- NO931802L NO931802L NO93931802A NO931802A NO931802L NO 931802 L NO931802 L NO 931802L NO 93931802 A NO93931802 A NO 93931802A NO 931802 A NO931802 A NO 931802A NO 931802 L NO931802 L NO 931802L
- Authority
- NO
- Norway
- Prior art keywords
- mute
- link
- masses
- facing surfaces
- outlet area
- 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
- F01N1/08—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling
- F01N1/085—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling using a central core throttling gas passage
-
- 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
- F01N1/08—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling
- F01N1/10—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling in combination with sound-absorbing materials
-
- 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
- F01N1/24—Silencing apparatus characterised by method of silencing by using sound-absorbing materials
-
- 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
- F16L55/0331—Noise absorbers by inserting an elongated element in the pipe
-
- 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
-
- 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
- G10K11/161—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general in systems with fluid flow
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Aviation & Aerospace Engineering (AREA)
- Fluid Mechanics (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Exhaust Silencers (AREA)
- Duct Arrangements (AREA)
Abstract
Akustisk dempeledd med i det minste to masser (102, 103) av lyddempende materialea lokalisert i en kanal (101) med en gasspassasje mellom de mot hverandre vendte overflater til i det minste to massene, gjennom hvilke gass skal strømme fra et innløpsområde av passasjen til et utløpsområde (B) derav, i det minste en av de mot hverandre vendte flater fremviser et trinn (102b) som frembringer en utvidelse av gasspassasjen l utløpsområdet.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/GB1990/001799 WO1992009988A1 (en) | 1990-11-21 | 1990-11-21 | Improvements in attenuators |
Publications (2)
Publication Number | Publication Date |
---|---|
NO931802D0 NO931802D0 (no) | 1993-05-18 |
NO931802L true NO931802L (no) | 1993-05-18 |
Family
ID=10669948
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NO93931802A NO931802L (no) | 1990-11-21 | 1993-05-18 | Dempeledd |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0558472B1 (no) |
NO (1) | NO931802L (no) |
WO (1) | WO1992009988A1 (no) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2267359B (en) * | 1992-05-26 | 1995-07-26 | Sound Attenuators Ltd | Improvements in attenuating bends |
SE511627C2 (sv) * | 1997-11-03 | 1999-11-01 | Stifab Farex Ab | Baffel för ljuddämpere för rektangulära ventilationskanaler |
SE511628C2 (sv) * | 1997-11-10 | 1999-11-01 | Stifab Farex Ab | Ljuddämpare med bafflar för rektangulära ventilationskanaler |
JP5947606B2 (ja) * | 2012-04-17 | 2016-07-06 | 大成建設株式会社 | 消音器 |
EP2871636B1 (en) | 2013-11-08 | 2021-01-06 | Volvo Car Corporation | Sound reduction system |
CN103912755A (zh) * | 2014-03-27 | 2014-07-09 | 中国船舶重工集团公司第七二五研究所 | 一种管路用周期结构阻尼以及处理方法 |
JP6578225B2 (ja) * | 2016-02-23 | 2019-09-18 | 三菱日立パワーシステムズ株式会社 | 吸音スプリッタ、サイレンサ、ガスタービン用煙突、および、ガスタービン |
CN109488833B (zh) * | 2018-12-12 | 2024-04-23 | 华电重工股份有限公司 | 一种片式消声器 |
CN111022814A (zh) * | 2019-12-17 | 2020-04-17 | 华电重工股份有限公司 | 一种矩阵式消声器 |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4109750A (en) * | 1977-05-24 | 1978-08-29 | Lockheed Aircraft Corporation | Zeno duct sound attenuating means |
DE3132169C2 (de) * | 1981-08-14 | 1984-11-29 | První brněnská strojírna, koncernový podnik, Brno | Zylinderförmiger Verbrennungsschalldämpfer des Absorptionstyps |
SE450656B (sv) * | 1982-05-14 | 1987-07-13 | Bahco Ventilation Ab | Ljuddempare for ventilationskanaler eller ventilationsapparater |
-
1990
- 1990-11-21 EP EP90917679A patent/EP0558472B1/en not_active Expired - Lifetime
- 1990-11-21 WO PCT/GB1990/001799 patent/WO1992009988A1/en active IP Right Grant
-
1993
- 1993-05-18 NO NO93931802A patent/NO931802L/no unknown
Also Published As
Publication number | Publication date |
---|---|
WO1992009988A1 (en) | 1992-06-11 |
NO931802D0 (no) | 1993-05-18 |
EP0558472B1 (en) | 1998-04-08 |
EP0558472A1 (en) | 1993-09-08 |
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