CN101714353A - 声音衰减系统和方法 - Google Patents
声音衰减系统和方法 Download PDFInfo
- Publication number
- CN101714353A CN101714353A CN200910178764A CN200910178764A CN101714353A CN 101714353 A CN101714353 A CN 101714353A CN 200910178764 A CN200910178764 A CN 200910178764A CN 200910178764 A CN200910178764 A CN 200910178764A CN 101714353 A CN101714353 A CN 101714353A
- Authority
- CN
- China
- Prior art keywords
- sound
- conduit
- sound attenuating
- baffle plate
- conduit according
- 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.)
- Pending
Links
- 239000012530 fluid Substances 0.000 claims description 11
- 238000000034 method Methods 0.000 abstract description 12
- 230000001629 suppression Effects 0.000 abstract description 9
- 238000003780 insertion Methods 0.000 description 15
- 230000037431 insertion Effects 0.000 description 15
- 230000014509 gene expression Effects 0.000 description 10
- 239000000463 material Substances 0.000 description 9
- 239000007789 gas Substances 0.000 description 7
- 238000004378 air conditioning Methods 0.000 description 5
- 238000009413 insulation Methods 0.000 description 5
- 230000009467 reduction Effects 0.000 description 5
- 238000009423 ventilation Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 239000011159 matrix material Substances 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000005192 partition Methods 0.000 description 2
- 239000002912 waste gas Substances 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 238000003491 array Methods 0.000 description 1
- 230000002238 attenuated effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005094 computer simulation Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 230000003434 inspiratory effect Effects 0.000 description 1
- 230000003137 locomotive effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000011490 mineral wool Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 230000000644 propagated effect Effects 0.000 description 1
- 230000000452 restraining effect Effects 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/24—Means for preventing or suppressing noise
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
- F01D25/30—Exhaust heads, chambers, or the like
-
- 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
- F16L55/027—Throttle passages
- F16L55/02709—Throttle passages in the form of perforated plates
-
- 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
- F16L55/027—Throttle passages
- F16L55/02754—Throttle passages using a central core throttling the passage
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T50/00—Aeronautics or air transport
- Y02T50/60—Efficient propulsion technologies, e.g. for aircraft
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
- Exhaust Silencers (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US12/243930 | 2008-10-01 | ||
| US12/243,930 US8240427B2 (en) | 2008-10-01 | 2008-10-01 | Sound attenuation systems and methods |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101714353A true CN101714353A (zh) | 2010-05-26 |
Family
ID=41461029
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910178764A Pending CN101714353A (zh) | 2008-10-01 | 2009-09-30 | 声音衰减系统和方法 |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US8240427B2 (enExample) |
| EP (1) | EP2172716A3 (enExample) |
| JP (1) | JP2010085994A (enExample) |
| CN (1) | CN101714353A (enExample) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105526197A (zh) * | 2015-12-24 | 2016-04-27 | 宁波方太厨具有限公司 | 一种离心风机的消音、滤油装置 |
| CN107850091A (zh) * | 2016-02-22 | 2018-03-27 | 三菱重工业株式会社 | 噪音降低构造和增压装置 |
| CN108682411A (zh) * | 2018-05-16 | 2018-10-19 | 南京大学 | 一种宽带低频声学消声器 |
| CN110228594A (zh) * | 2018-03-06 | 2019-09-13 | 湾流航空航天公司 | 用于分离气流的双管消音器 |
| CN110425367A (zh) * | 2019-07-29 | 2019-11-08 | 北京航天发射技术研究所 | 一种柱形消声器 |
Families Citing this family (46)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2956445B1 (fr) * | 2010-02-12 | 2012-08-24 | Turbomeca | Revetement d'attenuation de bruit pour un conduit de guidage de gaz, tuyere et moteur a turbine a gaz avec le revetement |
| DE102010028089B4 (de) * | 2010-04-22 | 2020-03-19 | Man Energy Solutions Se | Rohrschalldämpfer für eine Strömungsmaschine und Verfahren zum Einbau eines Rohrschalldämpfers |
| US8151931B2 (en) * | 2010-06-18 | 2012-04-10 | Lennox Industries Inc. | Acoustic noise control in heating or cooling systems |
| GB2493170B (en) * | 2011-07-26 | 2017-04-12 | Silentair Group Ltd | Improved air conditioning units |
| GB201113034D0 (en) * | 2011-07-28 | 2011-09-14 | Airbus Uk Ltd | An conditioning system exhaust silencer for an aircraft |
| US8443611B2 (en) * | 2011-09-09 | 2013-05-21 | General Electric Company | System and method for damping combustor nozzle vibrations |
| JP6071664B2 (ja) * | 2012-03-14 | 2017-02-01 | 三菱重工業株式会社 | 排気煙道 |
| GB201206025D0 (en) * | 2012-04-04 | 2012-05-16 | Rolls Royce Plc | Vibration damping |
| USD694160S1 (en) * | 2012-05-07 | 2013-11-26 | Chiahua Eleanor Chou | Hexagon exhaust stack for transportation vehicle |
| US9305539B2 (en) * | 2013-04-04 | 2016-04-05 | Trane International Inc. | Acoustic dispersing airflow passage |
| KR101422113B1 (ko) * | 2013-04-26 | 2014-07-22 | 목포해양대학교 산학협력단 | 통기통로 또는 통수통로 둘레에 중첩된 차음용 공진챔버를 갖는 통기형 또는 통수형 방음벽 |
| US20150059312A1 (en) * | 2013-08-29 | 2015-03-05 | General Electric Company | Exhaust stack having a co-axial silencer |
| US20150069763A1 (en) * | 2013-09-10 | 2015-03-12 | General Electric Company | Load cover |
| USD726954S1 (en) * | 2014-08-05 | 2015-04-14 | General Luminaire Co., Ltd. | Hexagonal lamp panel |
| JP6506935B2 (ja) * | 2014-09-30 | 2019-04-24 | 三菱日立パワーシステムズ株式会社 | サイレンサを備える消音装置及びこれを備えるガスタービン |
| US9784469B2 (en) * | 2015-05-20 | 2017-10-10 | Rite-Hite Holding Corporation | Fabric silencers for air ducts |
| US20170074290A1 (en) * | 2015-09-16 | 2017-03-16 | General Electric Company | Silencer duct with self-supporting acoustic absorbing member |
| US20170074288A1 (en) * | 2015-09-16 | 2017-03-16 | General Electric Company | Silencer duct having silencing element extending therethrough |
| US10465714B2 (en) * | 2015-09-16 | 2019-11-05 | General Electric Company | Silencer duct having silencing element and couplers |
| US9546582B1 (en) * | 2015-09-16 | 2017-01-17 | General Electric Company | Silencer panel having sections and related silencer duct |
| US9551280B1 (en) * | 2015-09-16 | 2017-01-24 | General Electric Company | Silencer panel and system having plastic perforated side wall |
| US9759447B1 (en) * | 2016-03-14 | 2017-09-12 | Acoustic Metameterials, Inc. | Acoustic metamaterial noise control method and apparatus for ducted systems |
| US10101238B2 (en) * | 2016-05-16 | 2018-10-16 | General Electric Company | Integrated ventilation and leak detection system and method of assembly |
| US10722990B2 (en) | 2016-09-15 | 2020-07-28 | General Electric Company | Method for installing and removing modularized silencer baffles |
| US10119469B2 (en) | 2016-09-15 | 2018-11-06 | General Electric Company | Method and apparatus for modularized inlet silencer baffles |
| EP3523197B1 (en) | 2016-10-05 | 2020-09-09 | Bombardier Inc. | Noise reducing air duct |
| US10139126B2 (en) * | 2016-10-11 | 2018-11-27 | University Of Dammam | Airborne noise reduction system and method |
| CN108278157B (zh) | 2017-01-06 | 2022-08-02 | 通用电气公司 | 用于改进的入口消音挡板的系统和方法 |
| CN108278158B (zh) | 2017-01-06 | 2022-05-13 | 通用电气公司 | 用于改进的入口消音挡板的系统和方法 |
| US10532631B2 (en) | 2017-03-29 | 2020-01-14 | Ford Global Technologies, Llc | Acoustic air duct and air extraction system including a plurality of channels having an expansion chamber |
| US20180281558A1 (en) * | 2017-03-29 | 2018-10-04 | Ford Global Technologies, Llc | Acoustic air duct and air extraction system for a motor vehicle |
| US10662839B2 (en) * | 2017-06-28 | 2020-05-26 | General Electric Company | Exhaust stack assemblies with acoustic attenuation features |
| US10928096B2 (en) * | 2017-06-30 | 2021-02-23 | Robert Bosch Llc | Environmental control unit including noise reduction features |
| PL233171B1 (pl) * | 2017-07-03 | 2019-09-30 | Nucair Tech Spolka Z Ograniczona Odpowiedzialnoscia | Tłumik akustyczny do systemów klimatyzacyjnych |
| PL422608A1 (pl) * | 2017-08-21 | 2019-02-25 | Nucair Technologies Spółka Z Ograniczoną Odpowiedzialnością | Tłumik akustyczny do systemów klimatyzacyjnych |
| CN108151283A (zh) * | 2017-12-04 | 2018-06-12 | 北京小米移动软件有限公司 | 制备消音装置的方法、消音装置及空气净化器 |
| US10753607B2 (en) * | 2017-12-11 | 2020-08-25 | Lennox Industries Inc. | Apparatus and method for sound reduction of high efficiency furnaces |
| US10626886B2 (en) * | 2018-04-18 | 2020-04-21 | Honeywell International Inc. | Sound attenuation apparatus and methods |
| US11043199B2 (en) * | 2018-04-25 | 2021-06-22 | Toyota Motor Engineering & Manufacturing North America, Inc. | Sparse acoustic absorber |
| USD882473S1 (en) * | 2018-09-14 | 2020-04-28 | Ben Mottern | Exhaust pipe |
| US11592205B2 (en) * | 2018-12-18 | 2023-02-28 | Johnson Controls Tyco IP Holdings LLP | Silencer assembly for air handling unit of an HVAC system |
| US11322126B2 (en) * | 2018-12-20 | 2022-05-03 | Toyota Motor Engineering & Manufacturing North America, Inc. | Broadband sparse acoustic absorber |
| WO2020154295A1 (en) * | 2019-01-21 | 2020-07-30 | Toledo Molding & Die, Inc. | Inline high frequency fiber silencer |
| CN110230746A (zh) * | 2019-04-28 | 2019-09-13 | 山西尚风科技股份有限公司 | 一种通风末端消音器 |
| AU2020286200A1 (en) | 2020-01-21 | 2021-08-05 | Techtronic Cordless Gp | Power tool having noise reduction features |
| US12475873B2 (en) * | 2023-02-28 | 2025-11-18 | Cummins Power Generation Inc. | Ducted attenuator system for enhancing airflow and reducing noise |
Family Cites Families (37)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2489048A (en) * | 1947-12-03 | 1949-11-22 | Johns Manville | Insulated duct |
| US2674335A (en) * | 1950-01-31 | 1954-04-06 | C W Lemmerman Inc | Muffler construction |
| US2959243A (en) * | 1956-03-29 | 1960-11-08 | Gen Sound Control Inc | Sound absorbing structure |
| US3011584A (en) * | 1957-12-16 | 1961-12-05 | Koppers Co Inc | Sound attenuating device |
| US3019850A (en) * | 1958-04-08 | 1962-02-06 | John J March | Prefabricated insulated duct and sound trap |
| NL262265A (enExample) | 1960-03-11 | 1900-01-01 | ||
| US3522863A (en) * | 1968-07-15 | 1970-08-04 | Vincent E Ignoffo | Glass-packed muffler |
| US3776365A (en) * | 1972-01-14 | 1973-12-04 | Fluid Kinetics Corp | Fluid blow-off silencer |
| US3854548A (en) * | 1973-08-01 | 1974-12-17 | H Suzuki | Silencing apparatus |
| US3894610A (en) * | 1974-08-20 | 1975-07-15 | Burgess Ind | Gas stream silencer |
| US3949830A (en) * | 1975-06-20 | 1976-04-13 | George Koch Sons, Inc. | Fan silencer |
| US4180141A (en) * | 1975-11-24 | 1979-12-25 | Judd Frederick V H | Distributor for gas turbine silencers |
| HU182491B (en) * | 1977-04-08 | 1984-01-30 | Fuetoeber Epueletgep Termekek | Sound-damping deviceparticularly for reducing noise spreading in air duct |
| US4127183A (en) * | 1978-02-17 | 1978-11-28 | American Air Filter Company, Inc. | Silencer device |
| US4167986A (en) * | 1978-03-13 | 1979-09-18 | Adco, Ltd. | Fluid stream silencing device |
| US4184565A (en) * | 1978-12-15 | 1980-01-22 | Harris V C | Exhaust muffler |
| JPS6217675Y2 (enExample) * | 1980-12-05 | 1987-05-07 | ||
| US4487290A (en) * | 1983-04-29 | 1984-12-11 | Mustang Units Co. | Light aircraft engine muffler |
| US4645032A (en) | 1985-09-05 | 1987-02-24 | The Garrett Corporation | Compact muffler apparatus and associated methods |
| AU2094288A (en) * | 1988-08-16 | 1990-02-15 | Fujitsubo Giken Co. Ltd. | Automobile muffler |
| FI95747B (fi) * | 1991-01-17 | 1995-11-30 | Valmet Paper Machinery Inc | Matalien taajuuksien äänenvaimennin paperitehtaiden ilmakanaviin |
| US5532439A (en) * | 1994-06-23 | 1996-07-02 | Transco Products Inc. | Silencer assembly with acoustical modules therein |
| JP3653763B2 (ja) * | 1994-12-20 | 2005-06-02 | 株式会社デンソー | 消音器 |
| US5696361A (en) * | 1995-11-13 | 1997-12-09 | Chen; Chia-Hsien | Multi-ducts sound eliminator for air pipe |
| CA2164370A1 (en) * | 1995-12-04 | 1997-06-05 | Donald L. Allen | Reactive acoustic silencer |
| US5859393A (en) * | 1997-05-19 | 1999-01-12 | Nelson Industries, Inc. | Reduced cost vent silencer |
| FR2781719B1 (fr) * | 1998-07-30 | 2000-09-08 | Hispano Suiza Sa | Structure de nid d'abeille, notamment pour absorption du son, et son procede de fabrication |
| US6116377A (en) * | 1998-12-29 | 2000-09-12 | Dugan; Jimmie Robert | Sound attenuation devices for internal combustion engines |
| JP3522158B2 (ja) * | 1999-06-24 | 2004-04-26 | 株式会社織建 | 住宅等建築物における自然換気機構 |
| FR2815900B1 (fr) * | 2000-10-31 | 2003-07-18 | Eads Airbus Sa | Panneau sandwich reducteur de bruit, notamment pour turboreacteur d'aeronef |
| CA2438535A1 (en) * | 2001-02-15 | 2002-08-29 | Craig Cummings | Air turbine for combustion engine |
| US6457550B1 (en) * | 2001-03-06 | 2002-10-01 | Twin City Fan Companies, Ltd. | Weatherproof sound attenuating device |
| US6802690B2 (en) * | 2001-05-30 | 2004-10-12 | M & I Heat Transfer Products, Ltd. | Outlet silencer structures for turbine |
| US6550572B2 (en) * | 2001-08-14 | 2003-04-22 | Min-Chyr Lin | Exhaust pipe for an automobile or a motorcycle |
| US20050161280A1 (en) * | 2002-12-26 | 2005-07-28 | Fujitsu Limited | Silencer and electronic equipment |
| WO2007012537A1 (de) | 2005-07-29 | 2007-02-01 | BSH Bosch und Siemens Hausgeräte GmbH | Schalldämpfer, insbesondere für ein hausgerät |
| US7779960B2 (en) * | 2006-08-18 | 2010-08-24 | Hewlett-Packard Development Company, L.P. | System and method for noise suppression |
-
2008
- 2008-10-01 US US12/243,930 patent/US8240427B2/en not_active Expired - Fee Related
-
2009
- 2009-09-30 CN CN200910178764A patent/CN101714353A/zh active Pending
- 2009-09-30 EP EP09171718A patent/EP2172716A3/en not_active Withdrawn
- 2009-09-30 JP JP2009225684A patent/JP2010085994A/ja active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105526197A (zh) * | 2015-12-24 | 2016-04-27 | 宁波方太厨具有限公司 | 一种离心风机的消音、滤油装置 |
| CN105526197B (zh) * | 2015-12-24 | 2017-10-27 | 宁波方太厨具有限公司 | 一种离心风机的消音、滤油装置 |
| CN107850091A (zh) * | 2016-02-22 | 2018-03-27 | 三菱重工业株式会社 | 噪音降低构造和增压装置 |
| CN110228594A (zh) * | 2018-03-06 | 2019-09-13 | 湾流航空航天公司 | 用于分离气流的双管消音器 |
| CN108682411A (zh) * | 2018-05-16 | 2018-10-19 | 南京大学 | 一种宽带低频声学消声器 |
| CN110425367A (zh) * | 2019-07-29 | 2019-11-08 | 北京航天发射技术研究所 | 一种柱形消声器 |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2010085994A (ja) | 2010-04-15 |
| US20100077755A1 (en) | 2010-04-01 |
| EP2172716A2 (en) | 2010-04-07 |
| US8240427B2 (en) | 2012-08-14 |
| EP2172716A3 (en) | 2010-06-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101714353A (zh) | 声音衰减系统和方法 | |
| CN101713335B (zh) | 声音衰减系统和具有声音衰减装置的涡轮发动机系统 | |
| CN205299884U (zh) | 一种船用空调的低噪音送风系统 | |
| CN106015818A (zh) | 一种消声节能管道 | |
| CN209354254U (zh) | 用于车载式燃气轮机发电机组中的进、排气通风降噪装置 | |
| CN113153817A (zh) | 一种通风管道综合降噪消声结构 | |
| CN205425339U (zh) | 空调管道消声系统 | |
| CN215595959U (zh) | 一种轴流通风机消音装置 | |
| Borelli et al. | APPLICATION OF A SIMPLIFIED “SOURCE-PATH-RECEIVER” MODEL FOR HVAC NOISE TO THE PRE-LIMINARY DESIGN OF A SHIP: A CASE STUDY. | |
| Pečinka et al. | Preliminary design of a low-cost mobile test cell for small gas turbine engines | |
| EP4498361A1 (en) | Air duct with silencer | |
| CN213336795U (zh) | 汽车空调系统噪音性能测试实验室 | |
| CN205824469U (zh) | 一种消声节能管道 | |
| CN206408985U (zh) | 一种用于发电机的降噪房 | |
| EP1704306B1 (en) | A method for reducing noise of a high power combustion engine | |
| CN204345874U (zh) | 消声室通风换气消声系统 | |
| JPH11148700A (ja) | 低騒音型空調グリル | |
| Donkin et al. | Measurement of sound power due to flow noise at the outlet of a straight pipe | |
| Wójciak et al. | Correlation between the shape of substitution ducts and insertion loss of silencers | |
| CN223459612U (zh) | 风机系统及其消音装置 | |
| EP4498362A1 (en) | Air duct with silencer | |
| CN210106257U (zh) | 用于空调机组矩阵式风机的消声器降噪装置 | |
| JPH07504379A (ja) | 特にプロペラタイプの航空機エンジン試験用建築物 | |
| Planade et al. | Modeling of silencers adapted to aircraft ventilation | |
| CN210086529U (zh) | 一种隔声房配套消声器 |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20100526 |