EP1888884A1 - Lufteinlass-schalldämpferbaugruppe - Google Patents
Lufteinlass-schalldämpferbaugruppeInfo
- Publication number
- EP1888884A1 EP1888884A1 EP06772131A EP06772131A EP1888884A1 EP 1888884 A1 EP1888884 A1 EP 1888884A1 EP 06772131 A EP06772131 A EP 06772131A EP 06772131 A EP06772131 A EP 06772131A EP 1888884 A1 EP1888884 A1 EP 1888884A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- air intake
- silencer assembly
- air
- intake silencer
- housing
- 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.)
- Withdrawn
Links
- 230000003584 silencer Effects 0.000 title claims abstract description 43
- 239000000835 fiber Substances 0.000 claims abstract description 12
- 238000007599 discharging Methods 0.000 claims abstract 2
- 238000001914 filtration Methods 0.000 claims description 4
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 229920000742 Cotton Polymers 0.000 claims description 2
- 230000004888 barrier function Effects 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 230000006835 compression Effects 0.000 description 4
- 238000007906 compression Methods 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- 239000004677 Nylon Substances 0.000 description 1
- 239000012814 acoustic material Substances 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000002238 attenuated effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000011152 fibreglass Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000012552 review Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 238000013022 venting Methods 0.000 description 1
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
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
- F02M35/12—Intake silencers ; Sound modulation, transmission or amplification
- F02M35/1205—Flow throttling or guiding
- F02M35/1211—Flow throttling or guiding by using inserts in the air intake flow path, e.g. baffles, throttles or orifices; Flow guides
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
- F02M35/12—Intake silencers ; Sound modulation, transmission or amplification
- F02M35/1205—Flow throttling or guiding
- F02M35/1227—Flow throttling or guiding by using multiple air intake flow paths, e.g. bypass, honeycomb or pipes opening into an expansion chamber
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
- F02M35/12—Intake silencers ; Sound modulation, transmission or amplification
- F02M35/1272—Intake silencers ; Sound modulation, transmission or amplification using absorbing, damping, insulating or reflecting materials, e.g. porous foams, fibres, rubbers, fabrics, coatings or membranes
Definitions
- the present invention relates to an air intake silencer assembly for attenuating noise of air flowing into an air handling system, such as an air compressor or blower.
- Air handling systems such as air compressors or blowers, involve the intake of air from an interfacing environment.
- the moving air as it reaches the intake of the air handling system, is subject to pressure variations due to the interaction of the air with stationary and moving objects.
- These pressure variations in the air manifest as sound, with annoying or unwanted sound broadly defined as noise. Sound propagates through air, other gases and surrounding media at a certain velocity and in the form of pressure waves from a source to a receiver.
- Most sound at the air intake of an air compressor is the result of complex interactions between the air and obstacles in its path, and is composed of a number of frequencies.
- Prior art attempts at noise attenuation at the intake of industrial air compressors have included the use of an acoustically lined duct. Due to the tendency of the acoustic material in the duct to break off, such an acoustically lined duct has typically been located before an air intake filter. The air intake filter thus prevents any broken off portions of this material from reaching the compressor.
- One shortcoming in this approach is the significant resultant distance between the lined duct and the air compressor, which promotes the escaping of noise through the connecting pipes and hoses. As the noise escapes from its source, its suppressions become significantly more difficult to accomplish by effective and economical means.
- Other means to suppress or prevent the further propagation of the noise into the surrounding environment include barriers such as free-standing walls and enclosing structures.
- the invention provides an improved and cost effective air intake silencer assembly which acts as a noise attenuating device and which can be positioned immediately downstream of an air intake filter and directly connected to the intake of an air handling system. Additionally, the silencer assembly provides minimal resistance to the air flow passing therethrough thus providing the downstream air handling system the appropriate capacity necessary for its rated performance. Further, the material in the silencer assembly remains in position and does not break free under the pressure and shearing actions of the air flow.
- Fig. 1 is one embodiment of an air intake silencer assembly in an air compression system wherein the silencer assembly is mounted downstream of an air intake filter and upstream of an air compressor;
- Fig. 2 is a perspective view of one embodiment of an air intake silencer assembly
- Fig. 4 illustrates a removable assembly of the air intake silencer assembly of Fig. 2;
- Fig. 5(a) and (b) are perspective views of a perforated tubular member wrapped with fiber
- Fig. 6 illustrates a baffle panel
- Fig. 1 illustrates a preferred placement of an air intake silencer assembly 10 in an air handling system, such as an air compression system 12.
- the air intake silencer assembly 10 is mounted downstream of an air intake filter 14 and upstream of an air compressor 18. Air flows into the air intake filter 14 where it is filtered, through the air intake silencer assembly 10, to a pipe 16, and then to the air compressor 18, where the air is compressed in one or more stages and then delivered to a compressed air utilization system (not shown).
- the air intake silencer assembly 10 includes a plenum housing 20 receiving filtered air at an inlet end 22.
- a flange 21 at end 22 allows easy mounting of the silencer assembly 10 to the air intake filter 14.
- brackets 19 can be used to mount the assembly 10 to a cabinet or housing (not shown) of the air compression system 12, such as a housing for electronic control components of the system 12.
- the air flows through the silencer assembly 10 to an outlet port 24 that is connectable to pipe 16.
- the outlet port 24 is located on a side 26 of the housing 20 rather than an end of the housing opposite end 22.
- the air intake silencer assembly 10 can be placed downstream of the air intake filter 14 because, as described below, the air intake silencer assembly 10 preferably includes material that doesn't break off and flow into the downstream air handling system.
- the air intake silencer assembly 10 includes two baffle panels 28 spaced apart from each other in the housing 20 to define, with the housing 20, an inlet chamber 30, a central chamber 32, and a discharge chamber 34.
- the baffle panels 28 are arranged parallel to each other in the housing 20.
- additional baffle panels be used to define more than a single central chamber.
- Tubular members 36 for dissipating sound are supported by the baffle panels 28 such that each tubular member 36 is substantially located within the central chamber 32.
- the baffle panels 28 include apertures 29 through which the ends of the tubular members can be inserted and supported.
- the tubular members 36, together with the baffle panels 28, form a subassembly 38 as shown in Fig. 4, which is easily insertable in and removable from the housing 20.
- each tubular member 36 includes a perforated core 40 with sound dissipating fiber 42 wrapped around the core 40.
- the tubular member in one embodiment is a water filtration device, such as available from Johnson Filtration Products, Inc.
- the perforated core 40 can be stainless steel.
- the area of the perforations on the outer surface of the core is approximately 30% of the outer surface of an identical core without perforations.
- the core can be made of other materials such as a fine wire mesh.
- the fiber is cotton string, although in other embodiments, the fiber can be one or more other fibers such as fiberglass yarn, nylon or polyester.
- the sound dissipating fiber will not break off and will not flow into the downstream compression system 12.
- the inlet chamber 30 and the discharge chamber 34 act as reactive plenums. Filtered air flows from the air intake filter 14 to the inlet chamber 30. Air in the inlet chamber 30 undergoes reflections such that pressure variations are somewhat equalized in this inlet chamber. Air then flows from the inlet chamber 30 through each of the plurality of tubular members 36 to the discharge chamber 34. Sound in the central chamber 32 is attenuated due to the sound dissipating effects of the fiber 42. Air in the discharge chamber 34 undergoes reflections such that pressure variations are somewhat equalized in the discharge chamber. Air is discharged from the discharge chamber 34 through the outlet port 24.
- the inlet chamber 30 and/or the discharge chamber 34 can also be lined with absorptive (dissipating) material such that sound is also dissipated in these chambers.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Compressor (AREA)
- Exhaust Silencers (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US68773905P | 2005-06-06 | 2005-06-06 | |
PCT/US2006/021711 WO2006133078A1 (en) | 2005-06-06 | 2006-06-05 | Air intake silencer assembly |
Publications (1)
Publication Number | Publication Date |
---|---|
EP1888884A1 true EP1888884A1 (de) | 2008-02-20 |
Family
ID=37081628
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP06772131A Withdrawn EP1888884A1 (de) | 2005-06-06 | 2006-06-05 | Lufteinlass-schalldämpferbaugruppe |
Country Status (4)
Country | Link |
---|---|
US (1) | US20060272888A1 (de) |
EP (1) | EP1888884A1 (de) |
CN (1) | CN101189415B (de) |
WO (1) | WO2006133078A1 (de) |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20080236938A1 (en) * | 2007-03-30 | 2008-10-02 | Siemens Vdo Automotive, Inc. | Induction system duct with noise attenuating holes |
CN103221689A (zh) * | 2010-09-23 | 2013-07-24 | 英格索尔-兰德公司 | 用于车辆上安装的压缩机的模块式排放消音器 |
US8066096B1 (en) * | 2010-11-04 | 2011-11-29 | Hamilton Sundstrand Corporation | Inlet silencer |
US8770340B2 (en) | 2011-11-16 | 2014-07-08 | Huntair, Inc. | Sound-absorptive panel for an air handling system |
JP5583287B2 (ja) * | 2012-02-20 | 2014-09-03 | 三菱重工業株式会社 | 過給機用サイレンサ |
CN102635447A (zh) * | 2012-04-11 | 2012-08-15 | 金华航宇汽配制造有限公司 | 一种消声器降噪的装置 |
US10774845B2 (en) | 2014-06-02 | 2020-09-15 | Carrier Corporation | Acoustic treatment for an indoor HVAC component |
US10508573B2 (en) | 2017-04-11 | 2019-12-17 | Caterpillar Inc. | Baffle assembly for a duct |
WO2019018581A1 (en) | 2017-07-18 | 2019-01-24 | Environmental Management Confederation, Inc. | DESIGN OF ADSORBENT FILTER SUPPORTS INCLINED IN TANGENTIAL FLOW APPLICATIONS |
WO2020154295A1 (en) | 2019-01-21 | 2020-07-30 | Toledo Molding & Die, Inc. | Inline high frequency fiber silencer |
TWI727808B (zh) * | 2020-05-22 | 2021-05-11 | 林鈺文 | 空壓機之降噪裝置 |
Family Cites Families (31)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1280847A (en) * | 1917-08-20 | 1918-10-08 | Thomas M Rinehart | Combination muffler and air-heating device. |
US1595711A (en) * | 1926-01-21 | 1926-08-10 | Jean A Cornelier | Gas purifier |
US2109220A (en) * | 1936-04-11 | 1938-02-22 | Noblitt Sparks Ind Inc | Muffler |
DE736944C (de) * | 1939-03-08 | 1943-07-02 | Goehler & Co | Schalldaempfer mit mehreren durch Rohre miteinander in Verbindung stehenden Kammern |
GB610000A (en) * | 1946-03-27 | 1948-10-08 | Arnold Freedman | Improvements in and relating to silencers for gaseous currents |
US2618354A (en) * | 1948-06-14 | 1952-11-18 | Maremont Automotive Products I | Retroverted passage type muffler with expansion chambers |
US2690812A (en) * | 1950-05-09 | 1954-10-05 | Goerlich S | Muffler construction |
US2707525A (en) * | 1954-03-09 | 1955-05-03 | Janeway Cornell | Muffler for internal combustion engines |
US3454129A (en) * | 1967-10-10 | 1969-07-08 | Wilhelm S Everett | Sound muting and filtering device |
HU182491B (en) * | 1977-04-08 | 1984-01-30 | Fuetoeber Epueletgep Termekek | Sound-damping deviceparticularly for reducing noise spreading in air duct |
JPS5431839A (en) * | 1977-08-15 | 1979-03-08 | Toyota Motor Corp | Muffler for internal combustion engine |
US4127183A (en) * | 1978-02-17 | 1978-11-28 | American Air Filter Company, Inc. | Silencer device |
JPS5689088U (de) * | 1979-12-13 | 1981-07-16 | ||
GB2109855B (en) * | 1981-11-14 | 1985-05-22 | Shelburne Limited | Exhaust silencers for internal combustion engines |
US4589517A (en) * | 1983-11-30 | 1986-05-20 | Saikei Giken Kogyo Kabushiki Kaisha | Muffler |
US5048287A (en) * | 1988-08-15 | 1991-09-17 | Arvin Industries, Inc. | Tuned exhaust processor assembly |
US4930597A (en) * | 1989-04-07 | 1990-06-05 | Arvin Industries, Inc. | Noise attenuation apparatus |
US5365025A (en) * | 1992-01-24 | 1994-11-15 | Tennessee Gas Pipeline Company | Low backpressure straight-through reactive and dissipative muffler |
CN2199313Y (zh) * | 1994-03-16 | 1995-05-31 | 王长林 | 涡流式内燃机废气与噪声处理器 |
US5679931A (en) * | 1995-07-10 | 1997-10-21 | Aaf-International | Sound attenuating apparatus and method of forming the same |
US5705777A (en) * | 1995-10-20 | 1998-01-06 | Carrier Corporation | Refrigeration compressor muffler |
US5926954A (en) * | 1997-09-10 | 1999-07-27 | Acoust-A-Fiber Research & Development, Inc. | Method of making a silencer |
CA2228992C (en) * | 1998-03-10 | 2006-01-24 | Bay Industries, Inc. | Muffler sleeve, and method and apparatus for manufacturing same |
CN2423411Y (zh) * | 1999-09-07 | 2001-03-14 | 南阳金属纤维实业公司 | 不锈钢纤维器芯消声器 |
DE10048118A1 (de) * | 2000-09-28 | 2002-04-11 | Eberspaecher J Gmbh & Co | Verfahren zur Herstellung eines Absorptions-Schalldämpfers für Kraftfahrzeuge sowie Absorptions-Schalldämpfer |
US6550572B2 (en) * | 2001-08-14 | 2003-04-22 | Min-Chyr Lin | Exhaust pipe for an automobile or a motorcycle |
US6598390B2 (en) * | 2001-12-26 | 2003-07-29 | Liang Fei Industry Co. Ltd. | Easily controlled exhaust pipe |
JP4620338B2 (ja) * | 2002-09-27 | 2011-01-26 | 三立化工株式会社 | 内燃機関の排気構造及びその製造方法 |
US6799657B2 (en) * | 2002-10-02 | 2004-10-05 | Carrier Corporation | Absorptive/reactive muffler for variable speed compressors |
US6868939B2 (en) * | 2003-02-25 | 2005-03-22 | Vicious Cycle Performance, Inc. | Exhaust silencer system |
CN2668865Y (zh) * | 2003-10-31 | 2005-01-05 | 哈尔滨工程大学 | 舰船柴油机双吸声管体热保护排气消声器 |
-
2006
- 2006-06-05 CN CN200680019767.2A patent/CN101189415B/zh not_active Expired - Fee Related
- 2006-06-05 EP EP06772131A patent/EP1888884A1/de not_active Withdrawn
- 2006-06-05 US US11/422,248 patent/US20060272888A1/en not_active Abandoned
- 2006-06-05 WO PCT/US2006/021711 patent/WO2006133078A1/en active Application Filing
Non-Patent Citations (1)
Title |
---|
See references of WO2006133078A1 * |
Also Published As
Publication number | Publication date |
---|---|
CN101189415A (zh) | 2008-05-28 |
CN101189415B (zh) | 2012-06-13 |
WO2006133078A1 (en) | 2006-12-14 |
US20060272888A1 (en) | 2006-12-07 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 20071203 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): DE ES FR GB IT |
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STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN |
|
18W | Application withdrawn |
Effective date: 20080219 |