AU1869699A - A silencer - Google Patents
A silencerInfo
- Publication number
- AU1869699A AU1869699A AU18696/99A AU1869699A AU1869699A AU 1869699 A AU1869699 A AU 1869699A AU 18696/99 A AU18696/99 A AU 18696/99A AU 1869699 A AU1869699 A AU 1869699A AU 1869699 A AU1869699 A AU 1869699A
- Authority
- AU
- Australia
- Prior art keywords
- silencing
- gas
- pipe
- subflows
- duct system
- 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.)
- Abandoned
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
- F01N1/10—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
- F01N1/02—Silencing apparatus characterised by method of silencing by using resonance
-
- 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
- F01N1/089—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling using two or more expansion chambers in series
-
- 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
- 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
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/24—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
- F01N3/28—Construction of catalytic reactors
- F01N3/2882—Catalytic reactors combined or associated with other devices, e.g. exhaust silencers or other exhaust purification devices
- F01N3/2885—Catalytic reactors combined or associated with other devices, e.g. exhaust silencers or other exhaust purification devices with exhaust silencers in a single housing
-
- 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
- F01N2470/00—Structure or shape of gas passages, pipes or tubes
- F01N2470/30—Tubes with restrictions, i.e. venturi or the like, e.g. for sucking air or measuring mass flow
-
- 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
- F01N2490/00—Structure, disposition or shape of gas-chambers
- F01N2490/15—Plurality of resonance or dead 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
- F01N2490/00—Structure, disposition or shape of gas-chambers
- F01N2490/15—Plurality of resonance or dead chambers
- F01N2490/155—Plurality of resonance or dead chambers being disposed one after the other in flow direction
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Exhaust Silencers (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
- Pipe Accessories (AREA)
- Portable Nailing Machines And Staplers (AREA)
Abstract
A silencing apparatus which is throughflowed by a gas and which is arranged within a pipe or duct system, the gas flow at one or more stages within the apparatus being divided into three or more preferably substantially parallel subflows, each or substantially each subflow throughflowing a silencing element (6a...) causing reflective silencing provided by changes in cross section area, said silencing elements being arranged beside each other within an outer envelope, at least 80 % of the volume inside said envelope being constituted by air, gas and/or solid materials, and at least a major part of said volume having silencing functions, said subflows merging downstream of said silencing elements, either within said apparatus or further downstream in said pipe or duct system.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DK155997 | 1997-12-30 | ||
DK1559/97 | 1997-12-30 | ||
PCT/DK1998/000588 WO1999035378A1 (en) | 1997-12-30 | 1998-12-30 | A silencer |
Publications (1)
Publication Number | Publication Date |
---|---|
AU1869699A true AU1869699A (en) | 1999-07-26 |
Family
ID=8106064
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AU18696/99A Abandoned AU1869699A (en) | 1997-12-30 | 1998-12-30 | A silencer |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP1060328B1 (en) |
AT (1) | ATE224003T1 (en) |
AU (1) | AU1869699A (en) |
DE (1) | DE69807942T2 (en) |
WO (1) | WO1999035378A1 (en) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SE9904504D0 (en) * | 1999-12-09 | 1999-12-09 | Abb Ab | Device and method of silencing |
DE10042542A1 (en) * | 2000-08-30 | 2002-03-14 | Eberspaecher J Gmbh & Co | Exhaust gas cleaning system for motor vehicles, in particular diesel commercial vehicles |
DK200300343A (en) * | 2003-03-05 | 2004-09-06 | Chris Invest As | An exhaust system component for a combustion engine exhaust system |
NL1026879C2 (en) * | 2004-08-19 | 2006-02-21 | Aarding Thermal Acoustics B V | Silencer, profile part and method for manufacturing a panel. |
GB2444274A (en) * | 2006-12-01 | 2008-06-04 | Bbt Thermotechnology Uk Ltd | Thermal acoustic baffle |
GB2487320B (en) * | 2009-03-23 | 2013-09-25 | Vortex Performance Exhausts Ltd | An improved exhaust filter |
GB2480182B (en) | 2009-03-23 | 2012-05-09 | Vortex Performance Exhausts Ltd | An improved exhaust filter |
CN104952440B (en) * | 2015-06-30 | 2019-01-11 | 成都普创通信技术股份有限公司 | Array type silencer |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NO56196C (en) * | 1933-11-21 | |||
US4105089A (en) * | 1975-11-24 | 1978-08-08 | Judd Frederick V H | Flow distributor for gas turbine silencers |
PL135373B1 (en) * | 1981-03-10 | 1985-10-31 | Inst Chemii Nieorganicznej | Piston-type silencer |
GB8307371D0 (en) * | 1983-03-17 | 1983-04-27 | Chillcotts Ltd | Exhaust silencer |
JPH0814033A (en) * | 1994-06-24 | 1996-01-16 | Caterpillar Inc | Module catalytic converter for internal combustion engine and muffler |
AU5333496A (en) * | 1995-04-11 | 1996-10-30 | Volund Danstoker A/S | A combined heat exchanger and silencer apparatus |
-
1998
- 1998-12-30 AU AU18696/99A patent/AU1869699A/en not_active Abandoned
- 1998-12-30 AT AT98963397T patent/ATE224003T1/en not_active IP Right Cessation
- 1998-12-30 WO PCT/DK1998/000588 patent/WO1999035378A1/en active IP Right Grant
- 1998-12-30 EP EP98963397A patent/EP1060328B1/en not_active Expired - Lifetime
- 1998-12-30 DE DE69807942T patent/DE69807942T2/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
WO1999035378A1 (en) | 1999-07-15 |
EP1060328A1 (en) | 2000-12-20 |
DE69807942T2 (en) | 2003-04-30 |
DE69807942D1 (en) | 2002-10-17 |
EP1060328B1 (en) | 2002-09-11 |
ATE224003T1 (en) | 2002-09-15 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
MK6 | Application lapsed section 142(2)(f)/reg. 8.3(3) - pct applic. not entering national phase |