EP1348874A1 - Druckluft-Schalldämpfer - Google Patents
Druckluft-Schalldämpfer Download PDFInfo
- Publication number
- EP1348874A1 EP1348874A1 EP03005028A EP03005028A EP1348874A1 EP 1348874 A1 EP1348874 A1 EP 1348874A1 EP 03005028 A EP03005028 A EP 03005028A EP 03005028 A EP03005028 A EP 03005028A EP 1348874 A1 EP1348874 A1 EP 1348874A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- compressed air
- outflow
- section
- channel
- air silencer
- 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.)
- Granted
Links
- 230000003584 silencer Effects 0.000 title claims description 41
- 239000000463 material Substances 0.000 claims description 17
- 238000011144 upstream manufacturing Methods 0.000 claims description 4
- 229910001369 Brass Inorganic materials 0.000 claims description 3
- 229910000906 Bronze Inorganic materials 0.000 claims description 3
- 239000004698 Polyethylene Substances 0.000 claims description 3
- 239000010951 brass Substances 0.000 claims description 3
- 239000010974 bronze Substances 0.000 claims description 3
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 claims description 3
- 230000030279 gene silencing Effects 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 claims description 3
- -1 polyethylene Polymers 0.000 claims description 3
- 229920000573 polyethylene Polymers 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 238000010276 construction Methods 0.000 claims 1
- 238000013016 damping Methods 0.000 abstract description 5
- 239000011148 porous material Substances 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000007704 transition Effects 0.000 description 4
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 230000003716 rejuvenation Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000005422 blasting Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 230000001743 silencing effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04F—PUMPING OF FLUID BY DIRECT CONTACT OF ANOTHER FLUID OR BY USING INERTIA OF FLUID TO BE PUMPED; SIPHONS
- F04F5/00—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow
- F04F5/44—Component parts, details, or accessories not provided for in, or of interest apart from, groups F04F5/02 - F04F5/42
Definitions
- the invention relates to a compressed air silencer, with a rear attachment portion, one in the longitudinal direction adjoining Schalldämpfabites with a Silencer made of porous soundproofing material and a in the longitudinal direction up to a front-side outflow opening continuous outflow channel, within the Schalldämpfabiteses a shape tapering towards the outflow opening Has.
- the compressed air silencer has a rear attachment section for fixing to the Ejektor issued, what a silencer section adjoins the one silencer body made of porous Schalldämpfmaterial possesses.
- a Exhaust duct passing through the compressed air silencer at the front with an outflow opening to the Environment ends.
- Has inside the muffling section the outflow channel is tapered towards the outflow opening Shape.
- the Schalldämpf stresses sits in a sleeve-like Housing, by which it is covered on the outer circumference.
- the well-known compressed air silencer has the advantage that it pollutes less quickly than one in the front Range of closed silencers. However, it turns out Loss of sound-absorbing effect. It is therefore the Object of the present invention, a compressed air silencer to propose the type mentioned, the one has better silencing effect.
- the Schalldämpfianu is formed on the outer circumference without cover, wherein its outer peripheral surface has an outflow surface for its Wall transverse to the longitudinal direction by flowing compressed air forms, and that in the attachment portion extending channel section the outflow channel steplessly in the silencer section extending channel section passes.
- the compressed air can now also on the outer periphery of the Schalldämpf stresses formed without cover emanate, so that at the front Outflow opening emerging volume flow is reduced and reduces the volume caused by the free jet becomes.
- the stepless channel profile has the advantage here that vortices are avoided, which prevents the passage of Prevent compressed air from passing through the wall of the muffler body or could affect.
- the running in the attachment portion channel portion of the Outflow channel may have a constant cross-section and steplessly into the correspondingly formed inlet cross-section of the channel section running in the sound-damping section pass.
- the channel wall can thereby in the transition area be slightly bent.
- the tapered shape can be especially through a conical channel course manufacturing technology very simple realize.
- the fastening portion may have a fastening body, the deviating from a material of the Schalldämpfianus Material exists, the two bodies, for example firmly connected by welding or gluing are.
- a particularly advantageous design is the Compressed air silencer a one-piece component, the consistently consists of the porous Schalldämpfmaterial. How has been shown falls in the channel design according to the invention the structural mechanical load in the longitudinal direction the compressed air silencer is relatively low, so that even with the mentioned one-piece design the required Strength values are achieved and thus a considerable Reduction of manufacturing costs is possible.
- the Schalldämpfmaterial may, for example, to Sintered bronze, sintered brass, polyethylene sintered material, Stainless steel sintered material or another suitable sintered material act.
- the Schalldämpfianu can outside, for example, circular cylindrical be designed. It has proved to be particularly advantageous However, proven when the Schalldämpfianumpfianu outside a has a tapered shape according to the outflow channel, so that he expediently over its length away one has constant wall thickness. This way results despite the conical shape of the discharge channel in the wall the Schalldämpf analysess no significant gain the flow resistance to the outflow, so that the exiting through the discharge flow and thus the outflow noise is further reduced.
- the drawing shows a reference numeral in its entirety 1 designated vacuum generating device. This contains one Ejektor owned 2, with a compressed air silencer. 3 the design of the invention is equipped.
- the ejector device 2 has a housing 4, which has a Blasting nozzle 5 and an adjoining catching nozzle 6 has or defines.
- the jet nozzle 5 has a feed opening 7, at the operation of the vacuum generating device 1 compressed air under atmospheric pressure is fed.
- the catching nozzle 6 closes on. Between the outlet opening of the jet nozzle 5 and the Inlet opening of the catching nozzle 6 is a gap, which defines a suction chamber 8, which via a channel is connected to a suction opening 12.
- the at the feed opening. 7 fed compressed air when flowing through the jet nozzle 5 accelerates and calls when crossing into the catching nozzle 6 in the suction 8 shows a negative pressure.
- it is one with a suction cup or a suction plate equipped suction pads.
- the fed Compressed air is combined with the extracted air by widening to the outlet opening 13 towards Mouthpiece 6 blown through to the atmosphere.
- Compressed air silencer 3 By connected to the outlet opening 13 of the catching nozzle 6 Compressed air silencer 3 is the Ausströmge Hursch compressed air to an acceptable level.
- the compressed air silencer 3 is an elongated, slender Component with a rear attachment portion 15, on which connects in the longitudinal direction of a Schalldämpfabites 16. With the attachment portion 15 of the compressed air silencer 3 in the region of the outlet opening 13 on the housing 4 of the ejector device 2 attached.
- the attachment portion has 15 via a trained as an external thread fastening thread 17, with which he is in a corresponding internal thread is screwed to the outlet opening 13. If necessary sealing measures can be provided, for example Sealing or adhesive.
- the silencing section 16 is in both embodiments exclusively from a Schalldämpfmaschine 18 of porous Schalldämpfmaterial.
- Schalldämpfmaterial recommends a sintered material, for example sintered bronze, sintered brass, Polyethylene sintered material or stainless steel sintered material. Fine and finest pores or spaces in this Material allows passage of compressed air sufficiently high pressure gradient.
- the compressed air silencer 3 is in the longitudinal direction of a Outflow channel 22 traversed linearly. With its back opens he to the free end face of the attachment portion 15th With its opposite end it leads to the attachment section 15 axially opposite front of Schalldämpf stressess 18, wherein this mouth as a discharge opening 23 is designated.
- the discharge channel 22 has at least within the Schalldämpfabiteses 16 a tapering towards the discharge opening 23 Shape.
- This tapered shape results suitably from a conically tapered Longitudinal course.
- the cross-section decrease is preferably continuous or evenly.
- the Schalldämpfianus 18 is not covered on its outer circumference. As a result, its transverse to the longitudinal direction forms Outer peripheral surface an outflow surface 24, at which the Wall 25 of the Schalldämpf stressess 18 transverse to the longitudinal direction and escaping around in particular radially flowing through compressed air can (see flow arrows 26).
- the outflow opening 23 When passing the compressed air through the compressed air silencer 3 enter parts of the compressed air as a free jet the outflow opening 23, while other parts according to the Flow arrows 26 pass through the sleeve-like wall 25 and exit at the outflow surface 24.
- the outflow surface 24 extends over the entire length and the entire outer circumference the Schalldämpf stressess 18 away.
- Stepless transition without step-like extension or Narrowing ensures an undisturbed flow without turbulence in the transition area, which controls the entry of compressed air in could affect the wall of Schalldämpf stresses 18.
- the attachment portion 15 of a mounting body 32 the a material other than the one firmly attached to it Schalldämpfianu 18.
- the mounting body 32 may, for example made of plastic or metal.
- the tapered channel course the outflow 22 on the lying in the Schalldämpfève 18 Restrict second channel section 28.
- the fastening body 32 extending first channel portion 27 throughout a constant Cross section, wherein this cross section of the inlet cross section of the second channel section 28 corresponds. from that results in the transition area only slightly kinking Wall course of the outflow 22, based on the flow conditions hardly adversely affects.
- FIG. 2 will nevertheless be optimal viewed, in which the tapered channel course extends over the entire length of the outflow 22 away.
- the largest channel cross section is located here expediently at the in the region of the end face of the attachment portion 15 lying inflow opening 23 'of the outflow channel 22, the smallest channel cross-section at the outflow opening 23rd
- the consistently tapering channel profile of the outflow channel 22 can be realized particularly advantageous if the Compressed air silencer in one piece from porous silencer material is made, as in the embodiment according to Fig. 2 is the case.
- the attachment section 15 from the Schalldämpfmaterial the Schalldämpfabiteses 16 so that elaborate multi-component manufacturing process unnecessary.
- the compressed air silencers 3 are in principle for all uses suitable where the sound of escaping compressed air should be reduced. You could, for example, related used with valves or pneumatic drives become. Particularly advantageous proves their use in combination with an ejector device 2, wherein Here the advantageous possibility exists, the geometry of the Compressed air muffler 3 optimally to the design of Ejektor worn 2 adapt.
- a particularly good sound attenuation is achieved when the present at the discharge port 23 discharge diameter D A of the discharge channel 22 is as small as possible, but always larger than the smallest diameter D K of the catching nozzle 6 of the ejector. 2
- the compressed air silencer 3 has expediently total a rod or bar-shaped figure.
- the cross-sectional contour on the outer circumference is expediently circular.
- Fig. 1 shows an embodiment of the compressed air silencer 3, in which the Schalldämpfianu 18 outside overall has a circular cylindrical shape. In connection with him concentrically penetrating, tapered outflow channel 22, this leads to the outflow opening 23 towards an enlarging Wall thickness of the wall 25 of the Schalldämpfianus 18. This can cause the flow resistance for the wall 25 flowing through the compressed air to the front the Schalldämpfianus 18 increases. Therefore, expediently a design comparable to that shown in Fig. 2 Art preferred, in which the Schalldämpfsammlung 18 outside a according to the discharge channel 22 to the front has a rejuvenating shape.
- the wall thickness of the Schalldämpf stresses 18 in the front area are kept relatively low. It exists in particular the advantageous possibility, the Schalldämpfianu 18 over its entire length a constant To give wall thickness so that it is in the radial direction is flowed through uniformly and optimal efficiency established. Conveniently, the Schalldämpfmaschine 18 outside a conically tapered shape.
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Jet Pumps And Other Pumps (AREA)
- Exhaust Silencers (AREA)
Abstract
Description
- Fig. 1
- eine erste Bauform des erfindungsgemäßen Druckluft-Schalldämpfers im an einer zur Vakuumerzeugung dienenden Ejektoreinrichtung installierten Zustand, das Ganze im Längsschnitt, und
- Fig. 2
- eine alternative Bauform des Druckluft-Schalldämpfers in einer der Fig. 1 entsprechenden Darstellungsweise, wobei die vorgeschaltete Ejektoreinrichtung jedoch nur strichpunktiert partiell angedeutet ist.
Claims (12)
- Druckluft-Schalldämpfer, mit einem rückseitigen Befestigungsabschnitt (15), einem sich in Längsrichtung daran anschließenden Schalldämpfabschnitt (16) mit einem Schalldämpfkörper (18) aus porösem Schalldämpfmaterial und einem in Längsrichtung bis zu einer vorderseitigen Ausströmöffnung (23) durchgehenden Ausströmkanal (22), der innerhalb des Schalldämpfabschnittes (16) eine sich zur Ausströmöffnung (23) hin verjüngende Gestalt hat, dadurch gekennzeichnet, dass der Schalldämpfkörper (18) am Außenumfang abdeckungslos ausgebildet ist, wobei seine Außenumfangsfläche eine Ausströmfläche (24) für die seine Wandung (25) quer zur Längsrichtung durchströmende Druckluft bildet, und dass der im Befestigungsabschnitt (15) verlaufende Kanalabschnitt (27) des Ausströmkanals (22) stufenlos in den im Schalldämpfabschnitt (16) verlaufenden Kanalabschnitt (28) übergeht.
- Druckluft-Schalldämpfer nach Anspruch 1, dadurch gekennzeichnet, dass der im Befestigungsabschnitt (15) verlaufende Kanalabschnitt (27) des Ausströmkanals (22) einen konstanten Querschnitt hat, wobei dieser Querschnitt dem Eintrittsquerschnitt des im Schalldämpfabschnitt (16) verlaufenden Kanalabschnittes (28) entspricht.
- Druckluft-Schalldämpfer nach Anspruch 1, dadurch gekennzeichnet, dass der Ausströmkanal (22) über seine gesamte Länge hinweg eine sich zur Ausströmöffnung (23) hin verjüngende Gestalt hat.
- Druckluft-Schalldämpfer nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass die sich verjüngende Gestalt des Ausströmkanals (22) eine konische Gestalt ist.
- Druckluft-Schalldämpfer nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass der Befestigungsabschnitt (15) einen aus vom Material des Schalldämpfkörpers (18) abweichendem Material bestehenden Befestigungskörper (32) aufweist, der mit dem Schalldämpfkörper (18) fest verbunden ist, zweckmäßigerweise durch eine Schweiß- oder Klebeverbindung.
- Druckluft-Schalldämpfer nach einem der Ansprüche 1 bis 4, gekennzeichnet durch eine einstückige Bauweise aus porösem Schalldämpfmaterial.
- Druckluft-Schalldämpfer nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass der Befestigungsabschnitt (15) über ein als Außengewinde ausgebildetes Befestigungsgewinde (17) verfügt.
- Druckluft-Schalldämpfer nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass es sich bei dem porösen Schalldämpfmaterial um Sinterbronze, Sintermessing, Polyethylen-Sintermaterial oder Edelstahl-Sintermaterial handelt.
- Druckluft-Schalldämpfer nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, dass der Schalldämpfkörper (18) außen eine kreiszylindrische Gestalt hat.
- Druckluft-Schalldämpfer nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, dass der Schalldämpfkörper (18) außen eine sich entsprechend dem Ausströmkanal (22) verjüngende Gestalt hat, insbesondere derart, dass er über seine Länge hinweg eine konstante Wandstärke besitzt.
- Druckluft-Schalldämpfer nach Anspruch 10, dadurch gekennzeichnet, dass der Schalldämpfkörper (18) außen eine sich kegelförmig verjüngende Gestalt hat.
- Druckluft-Schalldämpfer nach einem der Ansprüche 1 bis 11, gekennzeichnet durch eine Kombination mit einer vorgeschalteten Ejektoreinrichtung (2) zur Vakuumerzeugung, wobei der Ausströmdurchmesser(DA) an der Ausströmöffnung (23) des Ausströmkanals (22) möglichst klein, jedoch größer ist als der kleinste Durchmesser (DK) der Fangdüse (6) der Ejektoreinrichtung (2).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE20205068U | 2002-03-30 | ||
DE20205068U DE20205068U1 (de) | 2002-03-30 | 2002-03-30 | Druckluft-Schalldämpfer |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1348874A1 true EP1348874A1 (de) | 2003-10-01 |
EP1348874B1 EP1348874B1 (de) | 2005-07-20 |
Family
ID=7969559
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP03005028A Expired - Lifetime EP1348874B1 (de) | 2002-03-30 | 2003-03-06 | Druckluft-Schalldämpfer |
Country Status (3)
Country | Link |
---|---|
US (1) | US6899198B2 (de) |
EP (1) | EP1348874B1 (de) |
DE (2) | DE20205068U1 (de) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102011018932B4 (de) | 2011-04-28 | 2018-07-12 | Multivac Sepp Haggenmüller Se & Co. Kg | Schalldämpfvorrichtung und Verpackungsmaschine mit einer solchen Schalldämpfvorrichtung |
DE102018209751A1 (de) | 2018-06-18 | 2019-12-19 | Festo Ag & Co. Kg | Druckluft-Schalldämpfer und damit ausgestattetes Druckluftgerät |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10343439A1 (de) * | 2003-09-12 | 2005-04-14 | DAS-Dünnschicht Anlagen Systeme GmbH Dresden | Einlasselement an einer Entsorgungseinrichtung für Schadstoffe enthaltende Prozessabgase |
JP2005163619A (ja) * | 2003-12-02 | 2005-06-23 | Smc Corp | 真空発生用ユニット |
US7267297B2 (en) * | 2004-09-02 | 2007-09-11 | The Boeing Company | Integrated axially varying engine muffler, and associated methods and systems |
US7549509B2 (en) * | 2005-04-21 | 2009-06-23 | Ingersoll-Rand Company | Double throat pulsation dampener for a compressor |
US7905321B2 (en) * | 2007-02-12 | 2011-03-15 | Ballard Iii Ebbin C | Inserts for engine exhaust systems |
DE102007011455A1 (de) | 2007-03-09 | 2008-09-11 | Festo Ag & Co. | Druckluft-Schalldämpfer für pneumatische Anwendungen |
KR20100055236A (ko) * | 2008-11-17 | 2010-05-26 | 삼성전자주식회사 | 반도체 소자 테스트 장치 및 이를 사용한 반도체 소자 테스트 방법 |
DE102012015504B4 (de) | 2012-08-03 | 2021-06-24 | Festo Se & Co. Kg | Bauteil mit Einschraubabschnitt und damit ausgestattete Baugruppe |
DE202014102969U1 (de) | 2013-07-11 | 2014-10-22 | Robert Meyer | Druckluftschalldämpfer |
DE102019109128A1 (de) * | 2019-04-08 | 2020-10-08 | Homag Gmbh | Vorrichtung und Verfahren zum Beschichten von Werkstücken |
DE102019130610B3 (de) * | 2019-11-13 | 2021-01-21 | Nidec Gpm Gmbh | Schalldämpfungsvorrichtung für Vakuumpumpen |
CN111351272A (zh) * | 2020-03-19 | 2020-06-30 | 青岛海尔空调器有限总公司 | 喷射器及空气调节装置 |
Citations (4)
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DE3401209A1 (de) * | 1984-01-14 | 1985-07-25 | ASEA AB, Västerås | Kuehlanordnung zur kuehlung eines mediums |
US4759691A (en) * | 1987-03-19 | 1988-07-26 | Kroupa Larry G | Compressed air driven vacuum pump assembly |
WO2000050776A1 (en) * | 1999-02-26 | 2000-08-31 | Piab Ab | Filter and muffler for vacuum pump |
RU2179225C2 (ru) * | 1999-12-29 | 2002-02-10 | Буртолик Борис Иванович | Глушитель шума пневматических перфораторов |
Family Cites Families (14)
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US2185584A (en) * | 1940-01-02 | Muffler | ||
US822127A (en) * | 1905-12-08 | 1906-05-29 | John George Hufnagel | Noiseless steam water-heater. |
DE2827279C2 (de) * | 1978-06-21 | 1986-06-12 | Signode Corp., Glenview, Ill. | Abluftschalldämpfer für tragbare pneumatische Eintreibgeräte |
JPS621440Y2 (de) * | 1980-03-28 | 1987-01-13 | ||
US4316523A (en) * | 1980-06-04 | 1982-02-23 | Boretti Napoleon P | Silencer for gas discharge devices |
DE3130292C2 (de) | 1981-07-31 | 1984-02-09 | Festo-Maschinenfabrik Gottlieb Stoll, 7300 Esslingen | Schalldämpfer zur Verwendung an druckluftbetriebenen Einrichtungen |
JPS59160900U (ja) * | 1983-04-15 | 1984-10-27 | 株式会社 妙徳 | 真空発生装置 |
JPS619599U (ja) * | 1984-06-20 | 1986-01-21 | 株式会社 妙徳 | エゼクタポンプ |
FR2681905B1 (fr) * | 1991-09-27 | 1993-12-17 | Erear | Perfectionnements aux silencieux d'echappement et a leurs procedes de fabrication. |
DE4303319A1 (de) | 1993-02-05 | 1994-08-11 | Putzmeister Maschf | Vakuum-Pumpeinrichtung |
US6158546A (en) * | 1999-06-25 | 2000-12-12 | Tenneco Automotive Inc. | Straight through muffler with conically-ended output passage |
US6220387B1 (en) * | 1999-10-21 | 2001-04-24 | Mathew S. Hoppes | Exhaust muffler |
DE10009164C1 (de) | 2000-02-26 | 2001-07-19 | Festo Ag & Co | Mehrzahl von Vakuumerzeugereinheiten |
DE10027873C1 (de) | 2000-06-06 | 2002-02-07 | Festo Ag & Co | Pneumatische Drucksteuereinrichtung |
-
2002
- 2002-03-30 DE DE20205068U patent/DE20205068U1/de not_active Expired - Lifetime
-
2003
- 2003-03-06 DE DE50300783T patent/DE50300783D1/de not_active Expired - Lifetime
- 2003-03-06 EP EP03005028A patent/EP1348874B1/de not_active Expired - Lifetime
- 2003-03-24 US US10/395,493 patent/US6899198B2/en not_active Expired - Fee Related
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3401209A1 (de) * | 1984-01-14 | 1985-07-25 | ASEA AB, Västerås | Kuehlanordnung zur kuehlung eines mediums |
US4759691A (en) * | 1987-03-19 | 1988-07-26 | Kroupa Larry G | Compressed air driven vacuum pump assembly |
WO2000050776A1 (en) * | 1999-02-26 | 2000-08-31 | Piab Ab | Filter and muffler for vacuum pump |
RU2179225C2 (ru) * | 1999-12-29 | 2002-02-10 | Буртолик Борис Иванович | Глушитель шума пневматических перфораторов |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102011018932B4 (de) | 2011-04-28 | 2018-07-12 | Multivac Sepp Haggenmüller Se & Co. Kg | Schalldämpfvorrichtung und Verpackungsmaschine mit einer solchen Schalldämpfvorrichtung |
DE102018209751A1 (de) | 2018-06-18 | 2019-12-19 | Festo Ag & Co. Kg | Druckluft-Schalldämpfer und damit ausgestattetes Druckluftgerät |
Also Published As
Publication number | Publication date |
---|---|
DE20205068U1 (de) | 2002-08-29 |
US20030183447A1 (en) | 2003-10-02 |
EP1348874B1 (de) | 2005-07-20 |
US6899198B2 (en) | 2005-05-31 |
DE50300783D1 (de) | 2005-08-25 |
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