GB1259193A - - Google Patents
Info
- Publication number
- GB1259193A GB1259193A GB1259193DA GB1259193A GB 1259193 A GB1259193 A GB 1259193A GB 1259193D A GB1259193D A GB 1259193DA GB 1259193 A GB1259193 A GB 1259193A
- Authority
- GB
- United Kingdom
- Prior art keywords
- ducting
- air
- feb
- channels
- duct
- 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.)
- Expired
Links
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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Duct Arrangements (AREA)
Abstract
1,259,193. Air-ducting noise attenuators. UNIVERSITY OF SYDNEY. 25 Feb., 1969 [27 Feb., 1968], No. 9884/69. Heading F2P. [Also in Division H3] A noise attenuator adapted for insertion in air conditioning, or ventilation, ducting for attenuating the predominant sound wave due, for instance, to fan blades comprises a section of air ducting which is divided into at least two channels 15, 16 of smooth aerodynamic shape by one, or more, profiled separating bodies 17, the channels being different in length along their centre lines by approximately one-half, or an odd number of halves, of the wavelength of the predominant sound wave. An inlet 10 preferably has a sound-absorbing jacket 11, and each body 17 may be hollow, or filled with rock wool, etc., and be built up from sheet metal, acoustic boards, plywood, or perforated metal plates. Alternatively, the body 17 may be a solid casting of fibrous plaster, foam rubber, or polyurethane foam. The body 17 should be shaped to minimize pressure losses and reductions in the rate of air flow. In a modification, Fig. 3, not shown, the longer channel is provided on the outside of a right-angle bend of the duct the body 17 conforming to the curve at the bend. In another arrangement the inner shorter channel of a right-angle bend duct is provided with substantially straight walls.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU34220/68A AU431320B2 (en) | 1968-02-27 | 1968-02-27 | Improvements in air ducting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1259193A true GB1259193A (en) | 1972-01-05 |
Family
ID=3721552
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1259193D Expired GB1259193A (en) | 1968-02-27 | 1969-02-25 |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US3568791A (en) |
| AU (1) | AU431320B2 (en) |
| GB (1) | GB1259193A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2237408A (en) * | 1989-10-28 | 1991-05-01 | Gilberts | Valve assembly |
| GB2250356A (en) * | 1990-11-30 | 1992-06-03 | Sargents Acoustics Limited | Noise attenuation in ducting |
| DE10256771A1 (en) * | 2002-12-05 | 2004-06-17 | Bayerische Motoren Werke Ag | Sound-absorbing device for absorbing sound in a gas/fuel-feeding pipeline for an internal combustion engine has an inflow area forked into two pipelines and different lengths produced by curves |
| DE10360839B3 (en) * | 2003-12-23 | 2005-06-09 | Naber Holding Gmbh & Co. Kg | Pipe elbow for coupling fluid pipelines incorporating freely movable flow guidance elements positioned in response to pipeline flow |
| DE102012208708A1 (en) * | 2012-05-24 | 2013-11-28 | Kreuzinger + Manhart Turbulenz Gmbh | Flow channel arrangement |
| DE102013224141A1 (en) * | 2013-11-26 | 2015-05-28 | Continental Automotive Gmbh | valve device |
| DE102007037192B4 (en) * | 2006-08-07 | 2015-08-20 | Denso Corporation | Air duct for a vehicle air conditioning system |
| CN108042083A (en) * | 2018-01-09 | 2018-05-18 | 佛山市顺德区美的洗涤电器制造有限公司 | Inner conduit, internal cavity of bowl washer, wash the dishes machine base and dish-washing machine |
Families Citing this family (35)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5095632A (en) * | 1973-12-25 | 1975-07-30 | ||
| JPS5435704Y2 (en) * | 1976-01-19 | 1979-10-30 | ||
| US4287962A (en) * | 1977-11-14 | 1981-09-08 | Industrial Acoustics Company | Packless silencer |
| US4346781A (en) * | 1978-11-16 | 1982-08-31 | Massachusetts Institute Of Technology | Lined-duct acoustic filter |
| US4572327A (en) * | 1984-11-07 | 1986-02-25 | Tempmaster Corporation | Sound attenuator |
| DE3732553A1 (en) * | 1987-09-26 | 1989-04-13 | Bosch Gmbh Robert | MAGNETIC VALVE |
| NL9101182A (en) * | 1991-07-05 | 1993-02-01 | Zwaan Adrianus J | SOUNDPROOFING VENTILATION DEVICE. |
| US5276291A (en) * | 1992-07-10 | 1994-01-04 | Norris Thomas R | Acoustic muffler for high volume fluid flow utilizing Heimholtz resonators with low flow resistance path |
| US5929396A (en) * | 1997-07-29 | 1999-07-27 | Awad; Elias A. | Noise reducing diffuser |
| FR2768219B1 (en) * | 1997-09-11 | 1999-10-15 | Nicoll Raccords Plastiques | ACOUSTIC DAMPING DEVICE FOR INTAKE OF HOUSEHOLD AIR IN THE MASONRY OF A BUILDING |
| DE19849698A1 (en) * | 1998-10-28 | 2000-05-04 | Andreas Pfeifer | Silencer for engine running at constant revs., consisting of tube with exhaust gas input and output apertures, between which are two connecting points joined by bypass |
| US6796859B1 (en) * | 2000-11-16 | 2004-09-28 | Bombardier Recreational Products Inc. | Air intake silencer |
| US6558137B2 (en) * | 2000-12-01 | 2003-05-06 | Tecumseh Products Company | Reciprocating piston compressor having improved noise attenuation |
| US6607252B2 (en) | 2001-09-04 | 2003-08-19 | Ford Global Technologies, Llc | Anti-vibration brake system |
| US6920959B2 (en) * | 2003-05-30 | 2005-07-26 | M & I Heat Transfer Products Ltd. | Inlet and outlet duct units for air supply fan |
| JP2005146994A (en) * | 2003-11-17 | 2005-06-09 | Hitachi Ltd | Oil pump |
| US20060124385A1 (en) * | 2004-12-10 | 2006-06-15 | Ingersoll-Rand Company | Modular pressure pulsation dampener |
| JP4511436B2 (en) * | 2005-08-15 | 2010-07-28 | ビーバ株式会社 | Reflector silencer |
| DE102006018404B4 (en) * | 2006-04-20 | 2020-11-26 | Airbus Operations Gmbh | Noise-optimized air distributor |
| DE102006050339A1 (en) * | 2006-10-25 | 2008-04-30 | Valeo Klimasysteme Gmbh | Ventilation system with sound barrier |
| DE102006050869A1 (en) * | 2006-10-27 | 2008-04-30 | Airbus Deutschland Gmbh | Sound proofing device for air pipe line of airplane, has air conduction means that is arranged within curved pipe section that is equipped with micro perforation at side surface for further weight neutral sound proofing |
| JP4871714B2 (en) * | 2006-12-07 | 2012-02-08 | エムケー精工株式会社 | Ventilation equipment |
| US7806229B2 (en) * | 2007-03-16 | 2010-10-05 | E.H. Price Ltd. | Fan powered silencing terminal unit |
| US8210308B2 (en) * | 2007-03-16 | 2012-07-03 | E.H. Price Ltd. | Sound attentuator |
| MY159328A (en) * | 2007-08-09 | 2016-12-30 | Optimum Power Tech L P | Pulsation attenuation |
| US10174875B2 (en) * | 2007-09-28 | 2019-01-08 | Aci Services, Inc. | Branching device for a pulsation attenuation network |
| US20100126607A9 (en) * | 2007-09-28 | 2010-05-27 | Shade W Norm | Branching Device for a Pulsation Attenuation Network |
| US8608532B2 (en) * | 2008-04-23 | 2013-12-17 | Ford Global Technologies, Llc | Climate control duct architecture for a vehicle |
| DE102012106619A1 (en) * | 2012-07-20 | 2014-01-23 | Halla Visteon Climate Control Corporation 95 | Air-conducting transition element of a motor vehicle air conditioner |
| US8783413B1 (en) * | 2013-03-13 | 2014-07-22 | Denso International America, Inc. | Tuned shunt tubes for climate control air-handling systems |
| US10139126B2 (en) * | 2016-10-11 | 2018-11-27 | University Of Dammam | Airborne noise reduction system and method |
| CN107631106A (en) * | 2017-08-24 | 2018-01-26 | 江西泰豪军工集团有限公司 | Discharge duct and its sound reduction method |
| CN110614901A (en) * | 2018-06-19 | 2019-12-27 | 保时捷股份公司 | Air conditioning system for a motor vehicle |
| DE102018121855A1 (en) * | 2018-09-07 | 2020-03-12 | Vaillant Gmbh | Ventilation system |
| CN113203163B (en) * | 2021-04-22 | 2022-05-27 | 宁波奥克斯电气股份有限公司 | Noise reduction control method and device for air conditioner and air conditioner |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE178815C (en) * | ||||
| GB121212A (en) * | 1918-01-14 | 1918-12-12 | William Hooton | Silencer for Engines. |
| FR602160A (en) * | 1925-08-18 | 1926-03-13 | Silent exhaust system | |
| US2027359A (en) * | 1928-11-30 | 1936-01-07 | Gen Motors Corp | Muffler |
| FR869343A (en) * | 1939-05-04 | 1942-01-29 | Eberspaecher J | Quiet, especially for internal combustion engine |
| FR910922A (en) * | 1944-12-23 | 1946-06-24 | Travaux Souterrains | Soundproofing channel construction device |
| US2990906A (en) * | 1958-10-08 | 1961-07-04 | Koppers Co Inc | Acoustic absorber |
| US3323305A (en) * | 1964-10-16 | 1967-06-06 | Gen Motors Corp | Attenuating device |
-
1968
- 1968-02-27 AU AU34220/68A patent/AU431320B2/en not_active Expired
-
1969
- 1969-02-25 US US802184A patent/US3568791A/en not_active Expired - Lifetime
- 1969-02-25 GB GB1259193D patent/GB1259193A/en not_active Expired
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2237408A (en) * | 1989-10-28 | 1991-05-01 | Gilberts | Valve assembly |
| GB2237408B (en) * | 1989-10-28 | 1993-03-31 | Gilberts | Valve assembly |
| GB2250356A (en) * | 1990-11-30 | 1992-06-03 | Sargents Acoustics Limited | Noise attenuation in ducting |
| GB2250356B (en) * | 1990-11-30 | 1994-03-30 | Sargents Acoustics Limited | Improvements in or relating to ducting |
| DE10256771A1 (en) * | 2002-12-05 | 2004-06-17 | Bayerische Motoren Werke Ag | Sound-absorbing device for absorbing sound in a gas/fuel-feeding pipeline for an internal combustion engine has an inflow area forked into two pipelines and different lengths produced by curves |
| DE10360839B3 (en) * | 2003-12-23 | 2005-06-09 | Naber Holding Gmbh & Co. Kg | Pipe elbow for coupling fluid pipelines incorporating freely movable flow guidance elements positioned in response to pipeline flow |
| DE102007037192B4 (en) * | 2006-08-07 | 2015-08-20 | Denso Corporation | Air duct for a vehicle air conditioning system |
| DE102012208708A1 (en) * | 2012-05-24 | 2013-11-28 | Kreuzinger + Manhart Turbulenz Gmbh | Flow channel arrangement |
| DE102013224141A1 (en) * | 2013-11-26 | 2015-05-28 | Continental Automotive Gmbh | valve device |
| CN108042083A (en) * | 2018-01-09 | 2018-05-18 | 佛山市顺德区美的洗涤电器制造有限公司 | Inner conduit, internal cavity of bowl washer, wash the dishes machine base and dish-washing machine |
Also Published As
| Publication number | Publication date |
|---|---|
| AU3422068A (en) | 1970-07-30 |
| US3568791A (en) | 1971-03-09 |
| AU431320B2 (en) | 1972-12-28 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed [section 19, patents act 1949] | ||
| PCNP | Patent ceased through non-payment of renewal fee |