EP1172548A2 - Schalldämpfer für den Ein- und/oder Ablass in bzw. aus Druckluftsystemen - Google Patents
Schalldämpfer für den Ein- und/oder Ablass in bzw. aus Druckluftsystemen Download PDFInfo
- Publication number
- EP1172548A2 EP1172548A2 EP01115537A EP01115537A EP1172548A2 EP 1172548 A2 EP1172548 A2 EP 1172548A2 EP 01115537 A EP01115537 A EP 01115537A EP 01115537 A EP01115537 A EP 01115537A EP 1172548 A2 EP1172548 A2 EP 1172548A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- silencer
- air
- muffler
- intake
- compressed air
- 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- Withdrawn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 description 17
- 238000013016 damping Methods 0.000 claims description 6
- 239000006260 foam Substances 0.000 claims description 5
- 239000011148 porous material Substances 0.000 claims description 3
- 239000000463 material Substances 0.000 abstract description 2
- 230000009467 reduction Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 239000006096 absorbing agent Substances 0.000 description 3
- 230000005284 excitation Effects 0.000 description 2
- 239000011358 absorbing material Substances 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 230000002085 persistent effect Effects 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
Images
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
- F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
- F01N13/007—Apparatus used as intake or exhaust silencer
-
- 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
- F01N1/082—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling the gases passing through porous members
-
- 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
- F01N1/083—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling using transversal baffles defining a tortuous path for the gases or successively throttling gas flow
-
- 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
- F02M35/1233—Flow throttling or guiding by using expansion chambers in the air intake flow path
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/0027—Pulsation and noise damping means
- F04B39/0055—Pulsation and noise damping means with a special shape of fluid passage, e.g. bends, throttles, diameter changes, pipes
- F04B39/0061—Pulsation and noise damping means with a special shape of fluid passage, e.g. bends, throttles, diameter changes, pipes using muffler volumes
Definitions
- the invention relates to a silencer for damping the intake or Intake noise into a compressed air system - and / or for damping the Drain noise from a compressed air system. He is supposed to be especially for Motor vehicles are suitable.
- the air compressors generate during the intake of air persistent noises are perceived as annoying. Even more uncomfortable are the sometimes explosive or hissing noises that when Air is released from a compressed air system, be it when loosening it an air pressure-operated brake, as is common in heavy trucks when lowering the ground clearance of an air-sprung vehicle partial deflation of air from one or more of the air springs.
- GB-A-20 43 787 proposes to equip a compressor with separate suction and discharge openings each with a silencer, which forms an expansion chamber and can thus absorb sound of a specific frequency in a specific chamber volume.
- Air compressors with particularly soundproofed housings are known from US Pat. No. 4,254,282 .
- EP 0 729 762 A1 teaches an inhalation device with a muffler integrated in the compressor which is intended to dampen the intake noise and which can contain ribs as flow obstacles which run perpendicular to the connecting line between the air inlet and the air outlet.
- the level reductions achieved with known silencers so far are not sufficient, at least for the buyers of air-sprung luxury cars. So far, however, silencers with sufficient level reduction have been too large and too heavy.
- the object of the invention is to provide a light and compact silencer with a strong sound-reducing effect.
- the invention solves the problem in that inside the silencer Baffle walls are arranged at an angle to the basic flow direction run and the flowing air a meandering Force flow path.
- the "basic flow direction” means the direction in which the progression of a gas particle asymptotically approximates with an infinite number of itself similarly repeating meanders. Analogously transferred to the Moselle river the basic flow direction would be directed northeast, even if the flow direction is opposite in individual loops.
- the inclined baffles are preferably parallel to each other.
- the Oblique position of the baffle is important because it is the number of one broadband sound energy loss-related reflections in comparison increased to a position perpendicular to the basic flow direction.
- a silencer designed according to the invention can be used as Cavity absorbers act. As such, it absorbs discrete frequencies, such as especially when taking in depending on the compressor speed and the number of pistons of the compressor occur.
- the resonance frequency of the cavity absorber is on the prevailing excitation frequencies of the compressor in the manner known to those skilled in the art to coordinate, in particular a dimensioning of the air volume, the length and the cross-section of the corresponding leads arrive.
- Muffler near its low pressure opening - that is to the Intake or discharge opening open to the atmosphere during suction or Drain - to further improve sound absorption air-permeable, i.e. open-pore, foam introduced.
- micro caverns and micro meanders and hysterical walls of the said foam ideally complement the sound-absorbing effect of Macro meander created in the muffler by the sloping baffles are. In particular, they swallow high frequencies.
- the baffles are preferably at an angle in the silencer of the order of 45 ° to 70 ° to the basic flow direction.
- This figure shows to scale a longitudinal section through a silencer 1 designed according to the invention.
- This has a damper housing 2 in the shape of an elongated cuboid. At its two end regions, the damper housing 2 is provided with a connection 4, 5 for the air flowing through the muffler 1, sucked in by the (not shown) compressor or discharged from the pressure system.
- connections 4, 5 are tubular extension parts, with the shown Version for connecting the silencer 1 to the compressed air system or connection 4 provided to the compressor in the middle of one of the End faces of the damper housing 2 is provided.
- the second connector 5, the external connection is on the side at the end of the damper housing 2 arranged.
- the connection 4 can be shown in dashed lines shown design also on the second face of the Damper housing 2 may be arranged.
- the baffles 6, which are inside the Damper housing 2 are arranged obliquely and parallel to each other, protrude alternating from the two opposite walls far into the interior the damper housing 2.
- the between the baffles 6 and the longitudinal axis of the damper housing 2 selected angle ⁇ is 65 ° in this embodiment.
- the one in the area of the atmosphere connection 5 between that of the high pressure side seen from last baffle 6 and the other wall parts of the damper housing 2 is formed in this embodiment - as preferred - filled with open-cell foam.
- silencers 1 designed according to the invention can significantly reduce both suction and discharge noise, so that only one silencer 1 is required for both purposes.
- the silencer 1 acts with its total interior volume and with the air volumes in the connections 4 and 5 as a vibrating system of mass and spring, one additional damping takes place through the sound-absorbing material 3.
- the Silencer 1 therefore contributes as a strongly damping cavity absorber Reduction of the intake noise at.
- the sound-absorbing element Before it exits the silencer 1, the sound-absorbing element also acts Material 3, so that the outside sound energy is significantly reduced in the end.
- Silencers 1 designed according to the invention can be very compact and be lightweight and are therefore suitable for installation in motor vehicles particularly suitable.
- the muffler 1 shown here, which is used for the intake and Exhaust noise reduction of an air-sprung luxury car is intended should have a length between 100 and 120 mm.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Compressor (AREA)
- Exhaust Silencers (AREA)
Abstract
Description
Claims (4)
- Schalldämpfer (1) zur Dämpfung der Ansauggeräusche von Kompressoren und/oder zur Dämpfung von Ablassgeräuschen aus Druckluftsystemen, dadurch gekennzeichnet, dass im Inneren des Schalldämpfers (1) Prallwände (6) angeordnet sind, die (6) schräg zur grundsätzlichen Durchströmrichtung verlaufen und der durchströmenden Luft einen mäanderförmigen Strömungsweg aufzwingen.
- Schalldämpfer (1) nach Anspruch 1, dadurch gekennzeichnet, dass die schräg verlaufenden Prallwände (6) zueinander parallel sind.
- Schalldämpfer (1) nach Anspruch 1, oder 2, dadurch gekennzeichnet, dass in der Nähe seiner Niederdrucköffnung (5) luftdurchlässiger, offenporiger Schaumstoff (3) eingebracht ist.
- Schalldämpfer nach Anspruch 1, 2 oder 3, dadurch gekennzeichnet, dass die Prallwände (6) in einem Winkel (α) in der Größenordnung zwischen 45° und 70° zur grundsätzlichen Durchströmrichtung stehen.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10034243 | 2000-07-13 | ||
DE2000134243 DE10034243B4 (de) | 2000-07-13 | 2000-07-13 | Schalldämpfer für den Ein- und/oder Ablass in bzw. aus Druckluftsystemen |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1172548A2 true EP1172548A2 (de) | 2002-01-16 |
EP1172548A3 EP1172548A3 (de) | 2002-09-25 |
Family
ID=7648902
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP01115537A Withdrawn EP1172548A3 (de) | 2000-07-13 | 2001-06-28 | Schalldämpfer für den Ein- und/oder Ablass in bzw. aus Druckluftsystemen |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP1172548A3 (de) |
DE (1) | DE10034243B4 (de) |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2005035983A1 (en) * | 2003-10-10 | 2005-04-21 | Matsushita Electric Industrial Co., Ltd. | Hermetic compressor and manufacturing method of suction muffler |
CN100434697C (zh) * | 2003-10-10 | 2008-11-19 | 松下电器产业株式会社 | 密封压缩机 |
CN103470343A (zh) * | 2013-09-22 | 2013-12-25 | 无锡阳工机械制造有限公司 | 一种消音器 |
EP1411244B1 (de) | 2002-10-16 | 2015-09-09 | WABCO GmbH | Geräuschdämpfungseinrichtung für Luftpresser |
CN103410637B (zh) * | 2013-08-11 | 2016-01-20 | 中国人民解放军重庆通信学院 | 一种静音发电机组的进气消声结构 |
CN105840460A (zh) * | 2016-04-05 | 2016-08-10 | 北京化工大学 | 一种栅板式往复压缩机管路气流脉动衰减装置 |
WO2018033300A1 (de) * | 2016-08-19 | 2018-02-22 | Continental Teves Ag & Co. Ohg | Schalldämpfer für eine druckluftanlage |
WO2021258416A1 (zh) * | 2020-06-22 | 2021-12-30 | 江苏永益环保科技有限公司 | 风机用降噪消音器 |
DE102022130085A1 (de) | 2022-11-14 | 2024-05-16 | Saf-Holland Gmbh | Entlüftungssystem, Radkappe und Verwendung einer Radkappe in einem Nutzfahrzeug |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20200018272A1 (en) * | 2018-07-10 | 2020-01-16 | Ford Global Technologies, Llc | Engine air induction resistive foam element sound absorber and silencer |
DE102018213998B4 (de) * | 2018-08-20 | 2020-12-10 | Continental Teves Ag & Co. Ohg | Verfahren zur Ansteuerung eines Elektromagnetventils und Druckluftanlage mit einem Elektromagnetventil |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2043787A (en) | 1979-01-30 | 1980-10-08 | Glynwed Group Services Ltd | Air Compressor Equipment |
US4254282A (en) | 1979-01-03 | 1981-03-03 | Fmc Corporation | Process for preparing cis-3-(2,2-dihalovinyl)-2,2-dimethylcyclopropanecarboxylic acid |
EP0729762A1 (de) | 1995-03-02 | 1996-09-04 | PAUL RITZAU PARI-WERK GmbH | Inhalationsgerät mit integriertem Kompressorschalldämpfer |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB268085A (en) * | 1926-01-29 | 1927-03-31 | Henry Ramsden Mortell | Improvements in exhaust silencers for internal combustion engines |
FR714192A (fr) * | 1930-06-24 | 1931-11-09 | Gentil Et Cie | Perfectionnements aux pots d'échappement pour moteurs à explosions |
DE917580C (de) * | 1952-10-30 | 1954-09-06 | Hans Scherenberg Dr Ing | Ansauggeraeuschdaempfer |
DE2336615A1 (de) * | 1973-07-18 | 1975-01-30 | Ciraolo Samuel | Vorrichtung zum verhindern des abgebens von schadstoffen durch verbrennungskraftmaschinen |
GB2043387B (en) * | 1978-12-27 | 1983-05-05 | Marconi Co Ltd | Optical velocity measurement |
US4264282A (en) * | 1979-01-03 | 1981-04-28 | K. C. Mosier Company | Air compressor apparatus including noise-reducing means |
DE3429633A1 (de) * | 1984-08-11 | 1986-02-20 | Ing. Walter Hengst GmbH & Co KG, 4400 Münster | Schalldaempfendes luftansaugfilter fuer eine brennkraftmaschine |
DD247488A1 (de) * | 1986-03-31 | 1987-07-08 | Erfurt Kuehlmoebelwerk | Breitbanddaempfer gegen pulsierende stroemungen |
US5067584A (en) * | 1990-04-25 | 1991-11-26 | Williams William H | Low cost replaceable type sound dampening unit for vacuum cleaning machine |
DE19537660A1 (de) * | 1995-10-10 | 1997-04-17 | Teves Gmbh Alfred | Pneumatischer Bremskraftverstärker mit Umlenkmitteln zur Umlenkung des Ansaugluftstroms |
DE20004986U1 (de) * | 2000-03-17 | 2000-05-25 | Zach, Johann, 93444 Kötzting | Abgasschalldämpfer |
-
2000
- 2000-07-13 DE DE2000134243 patent/DE10034243B4/de not_active Expired - Fee Related
-
2001
- 2001-06-28 EP EP01115537A patent/EP1172548A3/de not_active Withdrawn
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4254282A (en) | 1979-01-03 | 1981-03-03 | Fmc Corporation | Process for preparing cis-3-(2,2-dihalovinyl)-2,2-dimethylcyclopropanecarboxylic acid |
GB2043787A (en) | 1979-01-30 | 1980-10-08 | Glynwed Group Services Ltd | Air Compressor Equipment |
EP0729762A1 (de) | 1995-03-02 | 1996-09-04 | PAUL RITZAU PARI-WERK GmbH | Inhalationsgerät mit integriertem Kompressorschalldämpfer |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1411244B1 (de) | 2002-10-16 | 2015-09-09 | WABCO GmbH | Geräuschdämpfungseinrichtung für Luftpresser |
WO2005035983A1 (en) * | 2003-10-10 | 2005-04-21 | Matsushita Electric Industrial Co., Ltd. | Hermetic compressor and manufacturing method of suction muffler |
CN100434697C (zh) * | 2003-10-10 | 2008-11-19 | 松下电器产业株式会社 | 密封压缩机 |
CN103410637B (zh) * | 2013-08-11 | 2016-01-20 | 中国人民解放军重庆通信学院 | 一种静音发电机组的进气消声结构 |
CN103470343A (zh) * | 2013-09-22 | 2013-12-25 | 无锡阳工机械制造有限公司 | 一种消音器 |
CN105840460A (zh) * | 2016-04-05 | 2016-08-10 | 北京化工大学 | 一种栅板式往复压缩机管路气流脉动衰减装置 |
WO2018033300A1 (de) * | 2016-08-19 | 2018-02-22 | Continental Teves Ag & Co. Ohg | Schalldämpfer für eine druckluftanlage |
WO2021258416A1 (zh) * | 2020-06-22 | 2021-12-30 | 江苏永益环保科技有限公司 | 风机用降噪消音器 |
DE102022130085A1 (de) | 2022-11-14 | 2024-05-16 | Saf-Holland Gmbh | Entlüftungssystem, Radkappe und Verwendung einer Radkappe in einem Nutzfahrzeug |
Also Published As
Publication number | Publication date |
---|---|
DE10034243B4 (de) | 2005-11-10 |
DE10034243A1 (de) | 2002-01-31 |
EP1172548A3 (de) | 2002-09-25 |
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