EP0740080B1 - Filter-silencer - Google Patents
Filter-silencer Download PDFInfo
- Publication number
- EP0740080B1 EP0740080B1 EP96810228A EP96810228A EP0740080B1 EP 0740080 B1 EP0740080 B1 EP 0740080B1 EP 96810228 A EP96810228 A EP 96810228A EP 96810228 A EP96810228 A EP 96810228A EP 0740080 B1 EP0740080 B1 EP 0740080B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- filter
- muffling
- muffler
- casing
- elements
- 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 - Lifetime
Links
- 238000010521 absorption reaction Methods 0.000 claims description 20
- 239000000463 material Substances 0.000 claims description 9
- 229920005830 Polyurethane Foam Polymers 0.000 claims description 3
- RZVAJINKPMORJF-UHFFFAOYSA-N Acetaminophen Chemical compound CC(=O)NC1=CC=C(O)C=C1 RZVAJINKPMORJF-UHFFFAOYSA-N 0.000 claims 1
- 238000013016 damping Methods 0.000 abstract description 45
- 229910052751 metal Inorganic materials 0.000 abstract description 8
- 239000002184 metal Substances 0.000 abstract description 8
- 230000002745 absorbent Effects 0.000 abstract 1
- 239000002250 absorbent Substances 0.000 abstract 1
- 239000006261 foam material Substances 0.000 abstract 1
- 230000003584 silencer Effects 0.000 description 24
- 239000003570 air Substances 0.000 description 12
- 239000006260 foam Substances 0.000 description 5
- 238000002485 combustion reaction Methods 0.000 description 4
- 238000005406 washing Methods 0.000 description 4
- 239000012080 ambient air Substances 0.000 description 3
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 210000002268 wool Anatomy 0.000 description 2
- 229920000877 Melamine resin Polymers 0.000 description 1
- 244000089486 Phragmites australis subsp australis Species 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000002238 attenuated effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical compound NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000011496 polyurethane foam Substances 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 239000013585 weight reducing agent Substances 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
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/70—Suction grids; Strainers; Dust separation; Cleaning
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
- F04D29/663—Sound attenuation
- F04D29/664—Sound attenuation by means of sound absorbing material
-
- 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
- F02M35/02—Air cleaners
- F02M35/024—Air cleaners using filters, e.g. moistened
- F02M35/02475—Air cleaners using filters, e.g. moistened characterised by the shape of the filter element
- F02M35/02483—Cylindrical, conical, oval, spherical or the like filter elements; wounded filter elements
-
- 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
- F02M35/14—Combined air cleaners and silencers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/70—Suction grids; Strainers; Dust separation; Cleaning
- F04D29/701—Suction grids; Strainers; Dust separation; Cleaning especially adapted for elastic fluid pumps
Definitions
- the invention relates to a filter silencer, as in The preamble of the first claim is described.
- Such a filter silencer is known, for example from EP 0574605 A1.
- Filter silencers of this type are used, for example, on the intake side of a compressor which compresses combustion air and supplies it to an internal combustion engine.
- a compressor is driven by the exhaust gas turbine of an exhaust gas turbocharger.
- Mainly in the compressor wheel there are sound waves of undesirable high amplitude, which are released to the environment through the air intake duct. These sound waves are therefore usually attenuated by means of a silencer.
- ambient air flows through a filter arranged on the circumference of a muffler into the interior of the muffler equipped with damping elements, then flows past the damping elements, and is deflected by guide elements to the compressor wheel, from which sound waves emanate against the air flow.
- the sound damping takes place dissipatively on the damping elements, in that the sound energy is converted into heat directly by porous or fibrous absorption materials, from which the damping elements are essentially constructed.
- the above-mentioned EP 0574605 A1 describes a filter silencer which consists of a cast monoblock and in whose radial ribs the grooves are arranged with grooves.
- a filter frame consisting of a removable perforated sheet metal part, surrounds the silencer in such a way that the damping elements are secured against radial falling out.
- the perforated sheet metal part is arranged in a ring around the silencer by means of connecting elements.
- a disc-shaped damping element consists of four damping segments, which together form an annular surface.
- An absorption element is held by two punched perforated sheets, and thus forms a damping segment which is radially inserted into the grooves of the above-mentioned ribs of the cast monoblock.
- edges of the damping segments punched out of perforated sheet have a disadvantage in the construction of this filter silencer.
- These edges of the damping segments in the form of ring segments are not treated further after punching out, and thus have free-standing sheet metal webs due to the sheet metal perforation.
- These sheet metal webs can break off due to mechanical vibrations to which the entire filter silencer is exposed, and then the broken off pieces with sucked-in air can get into the compressor and into the combustion chamber of an internal combustion engine and damage them.
- the damping material then swells and thus impairs the air inlet channels with regard to the flow properties.
- the deflection by guide elements on the damping elements also has an unfavorable effect on the flow properties of the air, since it causes compression losses of undesirable height.
- the invention has for its object a filter silencer to further develop the type mentioned at the beginning, that the disadvantages mentioned above are reduced or be avoided. At the same time, the damping properties the silencer can be improved, and the Manufacturing and assembly costs can be reduced.
- the closed edges of the are also advantageous Damping plates that run along the perforated plate webs, and therefore have no free-standing metal webs.
- the coarse filter that surrounds the sports silencer is segment by segment divided, and the segments are on the damping plates arranged so that the coarse filter is not required as a single component.
- the arrangement of a cast-in is also advantageous Rohres as a washing device for the compressor wheel in the Housing wall of the connection side of the filter silencer.
- This pipe is connected to a supply line that does not like with conventional silencers, guided around them must be because their connection to the washing device on the end of the filter silencer is arranged.
- Fig. 1 shows a cylindrical filter silencer, which is essentially composed of a housing 2, a number, here thirty-three, damping elements 3 and a filter 4.
- 2 shows the housing 2 cast as a monoblock made of aluminum, the housing wall 5 of which is connected on the connection side 20 of the filter muffler by means of connecting webs 7 to the housing wall 6 on the end side 21.
- Circular arc-shaped grooves 8 are cast in on the inner sides of the housing walls 5, 6 and run narrower towards the inner radius of the filter muffler.
- the cross-sectional area of a connecting web 7 is the same in shape and curvature of a groove 8, and the distribution of the thirty-three grooves 8 and the three connecting webs 7 has been made uniformly over the circumference of the housing in a 10 ° division.
- webs 14 are arranged which have a constant width from the outer circumference of the housing 2 to the inner radius in FIG.
- a connection flange 22 is arranged on the connection side 20, with which the filter silencer is mounted on the compressor side of an exhaust gas turbocharger, not shown here. As shown in FIG.
- a tube 18 with a thread 19 is cast into the housing wall 5 on the connection side 20 in the radial direction, which is angled toward the connection side 20 at the end pointing to the central axis 13 of the housing 2.
- This tube serves as a washing device for the compressor wheel, not shown here, and is connected directly to the thread 19 with a line, also not shown, on the connection side 20 of the filter silencer.
- the damping elements 3 are secured with straps 16, which are closed on the circumference of the housing 2 by means of quick-release fasteners 17, against falling out.
- the filter muffler is surrounded on its circumference by an annular filter 4 made of polyurethane foam (PU foam), which filters out particles in the ambient air drawn in.
- the circumference of the annular filter 4 is smaller than the outer circumference of the filter muffler in the unassembled state, so that the filter 4, which is made of PU-elastic rubber, is fixed to the circumference of the muffler by spring force.
- PU foam polyurethan
- damping plate 9 is punched during manufacture in the form of a rectangle from perforated plate with square holes along the perforated webs, and thus has no free-standing webs.
- the rectangular perforated plate is then bent in such a way that a concave surface 12 is formed, to which a convex surface 11 adjoins.
- a flat surface 15 adjoins the convex surface 11 and is bent as a coarse filter segment 15.
- the concave surface 12 and the convex surface 11 run approximately parallel and form an intermediate space 23 into which the absorption element 10, FIG. 5, is inserted.
- An absorption element 10 is thicker than the intermediate space 23, so that when an absorption element 10 is inserted into the intermediate space 23, the surfaces 11, 12 are to be elastically bent apart. After the absorption elements 10 have been inserted into the intermediate space 23, they are clamped between the surfaces 11, 12 on account of their thickness.
- the material used for an absorption element 10 is an open-cell foam which, with the same damping properties, has only about 6% of the specific weight of conventional absorption materials such as wool felt.
- the absorption elements 10 shown in FIG. 5 are cut out rectangularly from foam sheets and are shown here only as bent in their installed state.
- FIG. 6 shows the arrangement of the damping elements 3, consisting of the damping plate 9 and the absorption element 10, in the circular cylindrical housing 2 with the central axis 13 on the basis of a cross-sectional segment of a filter muffler.
- the damping elements 3 are radially inserted into the grooves 8 and are of the type arranged that their damping surfaces 11, 12 run parallel to the central axis 13 of the housing 2.
- the width of the webs 14, and thus also the cross-sectional area of the air inlet ducts 24 between adjacent damping elements 3, is constant from the outer circumference of the filter muffler to the central axis 13, which ensures a constant speed of the ambient air drawn in. This arrangement reduces compression losses that occur in conventional silencer systems.
- the coarse filter segments 15 of the built-in damping plates 9 are combined to form a coarse filter ring, so that a coarse filter as an individual component is not required.
- An arc-shaped arrangement of the damping elements 3 in the housing 2 extends the air inlet ducts 24, and thus the path of the sound waves, in comparison to purely radial air inlet ducts, as occur in conventional filter silencers with the same outer circumference. This extension of the damping path alone, with the same dimensions as conventional filter silencers, improves sound absorption.
Abstract
Description
Die Erfindung betrifft einen Filterschalldämpfer, wie er im Oberbegriff des ersten Anspruchs beschrieben ist.The invention relates to a filter silencer, as in The preamble of the first claim is described.
Ein derartiger Filterschalldämpfer ist beispielsweise bekannt aus der EP 0574605 A1.Such a filter silencer is known, for example from EP 0574605 A1.
Filterschalldämpfer dieser Art werden beispielsweise
eingesetzt auf der Ansaugseite eines Verdichters, der
Verbrennungsluft komprimiert und einem Verbrennungsmotor
zuführt. Angetrieben wird ein derartiger Verdichter von der
Abgasturbine eines Abgasturboladers.
Vorwiegend im Verdichterrad entstehen dabei Schallwellen unerwünscht
hoher Amplitude, die durch den Luftansaugkanal an
die Umgebung freigesetzt werden. Diese Schallwellen werden
daher üblicherweise mittels eines Schalldämpfers gedämpft.
Hierfür strömt Umgebungsluft durch ein am Umfang eines
Schalldämpfers angeordnetes Filter in den mit
Dämpfungselementen ausgestatteten Innenraum des
Schalldämpfers, strömt anschliessend an den
Dämpfungselementen vorbei, und wird zum Verdichterrad, von
dem entgegen der Luftströmung Schallwellen ausgehen, durch
Leitelemente umgelenkt. Die Schalldämpfung erfolgt an den
Dämpfungselementen dissipativ, indem die Schallenergie
unmittelbar durch poröse oder faserige
Absorptionsmaterialien, aus denen die Dämpfungselemente im
wesentlichen aufgebaut sind, in Wärme umgesetzt wird.
Die oben erwähnte EP 0574605 Al beschreibt einen Filterschalldämpfer,
der aus einem gegossenen Monoblock besteht,
und in dessen strahlenförmigen Rippen mit Nuten die
Dämpfungselemente angeordnet sind. Ein Filterrahmen, bestehend
aus einem abnehmbaren Lochblechteil, umgibt den
Schalldämpfer in der Art, dass die Dämpfungselemente gegen
radiales Herausfallen gesichert werden. Das Lochblechteil ist
mittels Verbindungselementen ringförmig um den Schalldämpfer
angeordnet.
Ein scheibenförmiges Dämpfungselement besteht aus vier
Dämpfungssegmenten, die zusammengesetzt eine Ringfläche darstellen.
Ein Absorptionselement wird von zwei gestanzten
Lochblechen gehalten, und bildet so ein Dämpfungssegment, das
in die Nuten der oben erwähnten Rippen des gegossenen Monoblocks
radial eingeführt wird.Filter silencers of this type are used, for example, on the intake side of a compressor which compresses combustion air and supplies it to an internal combustion engine. Such a compressor is driven by the exhaust gas turbine of an exhaust gas turbocharger.
Mainly in the compressor wheel, there are sound waves of undesirable high amplitude, which are released to the environment through the air intake duct. These sound waves are therefore usually attenuated by means of a silencer. For this purpose, ambient air flows through a filter arranged on the circumference of a muffler into the interior of the muffler equipped with damping elements, then flows past the damping elements, and is deflected by guide elements to the compressor wheel, from which sound waves emanate against the air flow. The sound damping takes place dissipatively on the damping elements, in that the sound energy is converted into heat directly by porous or fibrous absorption materials, from which the damping elements are essentially constructed.
The above-mentioned EP 0574605 A1 describes a filter silencer which consists of a cast monoblock and in whose radial ribs the grooves are arranged with grooves. A filter frame, consisting of a removable perforated sheet metal part, surrounds the silencer in such a way that the damping elements are secured against radial falling out. The perforated sheet metal part is arranged in a ring around the silencer by means of connecting elements.
A disc-shaped damping element consists of four damping segments, which together form an annular surface. An absorption element is held by two punched perforated sheets, and thus forms a damping segment which is radially inserted into the grooves of the above-mentioned ribs of the cast monoblock.
Nachteilig an dem Aufbau dieses Filterschalldämpfers wirken
sich die Ränder der aus Lochblech gestanzten Dämpfungssegmente
aus. Diese Ränder der Dämpfungssegmente mit der Form
von Ringsegmenten werden nach dem Ausstanzen nicht weiterbehandelt,
und weisen somit aufgrund der Blechlochung freistehende
Blechstege auf. Diese Blechstege können durch mechanische
Schwingungen, denen der gesamte Filterschalldämpfer
ausgesetzt ist, abbrechen und anschliessend können die abgebrochenen
Stücke mit angesaugter Luft in den Verdichter und
in den Brennraum einer Verbrennungsmaschine gelangen und
diese beschädigt. An den Stellen, wo Blechstege ausgebrochen
sind, quellt dann das Dämpfungsmaterial auf und beeinträchtigt
damit die Lufteinlasskanäle hinsichtlich der
Strömungseigenschaften.
Weiterhin ungünstig für die Strömungseigenschaften der Luft
wirkt sich die Umlenkung durch Leitelemente an den
Dämpfungselemente aus, da durch sie Kompressionsverluste
unerwünschter Höhe auftreten.The edges of the damping segments punched out of perforated sheet have a disadvantage in the construction of this filter silencer. These edges of the damping segments in the form of ring segments are not treated further after punching out, and thus have free-standing sheet metal webs due to the sheet metal perforation. These sheet metal webs can break off due to mechanical vibrations to which the entire filter silencer is exposed, and then the broken off pieces with sucked-in air can get into the compressor and into the combustion chamber of an internal combustion engine and damage them. At the points where sheet metal webs have broken out, the damping material then swells and thus impairs the air inlet channels with regard to the flow properties.
The deflection by guide elements on the damping elements also has an unfavorable effect on the flow properties of the air, since it causes compression losses of undesirable height.
Der Erfindung liegt die Aufgabe zugrunde, einen Filterschalldämpfer der eingangs genannten Art dahingehend weiterzuentwickeln, dass die oben erwähnten Nachteile verringert oder vermieden werden. Dabei sollen gleichzeitig die Dämpfungseigenschaften des Schalldämpfers verbessert werden, und der Herstellungs- und Montageaufwand reduziert werden.The invention has for its object a filter silencer to further develop the type mentioned at the beginning, that the disadvantages mentioned above are reduced or be avoided. At the same time, the damping properties the silencer can be improved, and the Manufacturing and assembly costs can be reduced.
Erfindungsgemäss wird diese Aufgabe durch die Merkmale des ersten Anspruchs gelöst.According to the invention, this object is achieved through the features of first claim solved.
Die Vorteile der Erfindung sind unter anderem darin zu sehen,
dass nur noch Dämpfungselemente eingesetzt werden, die
gleichen Typs sind, und dabei nur noch aus zwei Teilen
bestehen, nämlich einem Dämpfungsblech und einem Absorptionselement.
Das Herabsetzen der Anzahl unterschiedlicher Bauteile ist besonders
hinsichtlich des logistischen Aufwandes von Vorteil.The advantages of the invention can be seen, inter alia, in the fact that only damping elements are used which are of the same type and only consist of two parts, namely a damping plate and an absorption element.
Reducing the number of different components is particularly advantageous in terms of logistical effort.
Ebenfalls vorteilhaft sind die geschlossenen Kanten der Dämpfungsbleche, die entlang der Lochblechstege verlaufen, und somit keine freistehenden Blechstege aufweisen.The closed edges of the are also advantageous Damping plates that run along the perforated plate webs, and therefore have no free-standing metal webs.
Das Grobfilter, das den Fiterschalldämpfer umgibt, ist segmentweise geteilt, und die Segmente sind an den Dämpfungsblechen angeordnet, sodass das Grobfilter als Einzelbauteil entfällt.The coarse filter that surrounds the sports silencer is segment by segment divided, and the segments are on the damping plates arranged so that the coarse filter is not required as a single component.
Vorteilhaft ist weiterhin die Anordnung eines eingegossenen Rohres als Waschvorrichtung für das Verdichterrad in der Gehäusewand der Anschlussseite des Filterschalldämpfers. The arrangement of a cast-in is also advantageous Rohres as a washing device for the compressor wheel in the Housing wall of the connection side of the filter silencer.
Dieses Rohr ist mit einer Zuleitung verbunden, die nicht, wie bei herkömmlichen Schalldämpfern, um diesen herumgeführt werden muss, weil deren Anschluss zur Waschvorrichtung auf der Abschlussseite des Filterschalldämpfers angeordnet ist.This pipe is connected to a supply line that does not like with conventional silencers, guided around them must be because their connection to the washing device on the end of the filter silencer is arranged.
Weiterhin ist es von Vorteil, dass die Luft zwischen benachbarten Dämpfungsblechen in Schalldämpferkanälen mit konstantem Querschnitt geführt wird, und somit die Luft beim Ansaugen einer konstanten Geschwindigkeit unterliegt, wodurch nur geringe Kompressionsverluste auftreten.It is also advantageous that the air between neighboring Damping plates in muffler ducts with constant Cross-section is guided, and thus the air when sucking is subject to a constant speed, whereby only low compression losses occur.
Es ist besonders zweckmässig, wenn wegen der guten Dämpfungseigenschaften als Absorptionsmaterial in den Dämpfungselementen ein offenzelliger Schaumstoff mit hoher Elastizität verwendet wird. Im Vergleich zu Wollfilz als Absorptionsmaterial wird mit dieser Art Schaumstoff gleichzeitig eine beachtliche Gewichtsreduktion des gesamten Filterschalldämpfers erzielt.It is particularly useful if because of the good damping properties as an absorption material in the damping elements an open-cell foam with high elasticity is used. Compared to wool felt as an absorption material with this type of foam it becomes a considerable weight reduction of the entire filter silencer achieved.
Die Erfindung wird nachfolgend anhand schematischer Darstellungen
eines Ausführungsbeispiels in der Zeichnung erläutert.
Es zeigen:
- Fig. 1
- einen Teilsegmentschnitt eines Filterschalldämpfers;
- Fig. 2
- eine Ansicht des Filterschalldämpfergehäuses von der Anschlussseite;
- Fig. 3
- einen Teillängsschnitt durch den Filterschalldämpfer;
- Fig. 4
- eine Ansicht eines Dämpfungsblechs;
- Fig. 5
- eine Ansicht einer Anordnung von Absorptionselementen;
- Fig. 6
- einen Teilquerschnitt des Filterschalldämpfers nach der Linie VI-VI gemäss Fig. 3;
Show it:
- Fig. 1
- a partial segment section of a filter silencer;
- Fig. 2
- a view of the filter silencer housing from the connection side;
- Fig. 3
- a partial longitudinal section through the filter silencer;
- Fig. 4
- a view of a damping plate;
- Fig. 5
- a view of an arrangement of absorption elements;
- Fig. 6
- a partial cross section of the filter silencer along the line VI-VI of FIG. 3;
Es sind nur die für das Verständnis der Erfindung wesentlichen Elemente gezeigt. Nicht dargestellt ist z.B. die Anordnung des Filterschalldämpfers an der Verdichterseite eines Turboladers und der Anschluss einer Waschvorrichtung für ein Verdichterrad.It is only essential for understanding the invention Elements shown. For example, not shown the order of the filter silencer on the compressor side Turbocharger and the connection of a washing device for one Compressor wheel.
Fig. 1 zeigt einen kreiszylindrischen Filterschalldämpfer,
der im wesentlichen aus einem Gehäuse 2, einer Anzahl, hier
dreiunddreissig, Dämpfungselementen 3 und einem Filter 4 aufgebaut
ist.
Fig. 2 zeigt das als Monoblock aus Aluminium gegossene Gehäuse
2, dessen Gehäusewand 5 auf der Anschlussseite 20 des
Filterschalldämpfers mittels Verbindungsstege 7 mit der Gehäusewand
6 auf der Abschlussseite 21 verbunden ist. Auf den
Innenseiten der Gehäusewände 5, 6 sind kreisbogenförmige
Nuten 8 eingegossen, die zum Innenradius des Filterschalldämpfers
hin schmaler verlaufen. Die Querschnittsfläche eines
Verbindungsstegs 7 ist in Form und Krümmung einer Nut 8
gleich, und die Verteilung der dreiunddreissig Nuten 8 und
der drei Verbindungsstege 7 ist gleichmässig über den Umfang
des Gehäuses in einer 10°-Teilung erfolgt.
Zwischen benachbarten Nuten 8 und zwischen Nuten 8 und einem
benachbarten Verbindungssteg 7 sind Stege 14 angeordnet, die
eine konstante Breite vom Aussenumfang des Gehäuses 2 zum
Innenradius in aufweisen.
Auf der Anschlussseite 20 ist ein Anschlussflansch 22 angeordnet,
mit dem der Filterschalldämpfer an der Verdichterseite
eines hier nicht dargestellten Abgasturboladers
montiert wird.
Wie in Fig. 3 gezeigt, ist in die Gehäusewand 5 auf der
Anschlussseite 20 in radialer Richtung ein Rohr 18 mit einem
Gewinde 19 eingegossen, dass an dem zur Zentralachse 13 des
Gehäuses 2 zeigenden Ende zur Anschlussseite 20 abgewinkelt
ist. Dieses Rohr dient als Waschvorrichtung für das hier
nicht dargestellte Verdichterrad, und wird direkt am Gewinde
19 mit einer ebenfalls nicht dargestellte Leitung auf der
Anschlussseite 20 des Filterschalldämpfers verbunden.
Die Dämpfungselemente 3 werden mit Spannbändern 16, die am
Umfang des Gehäuses 2 mittels Schnellverschlüssen 17 verschlossen
sind, gegen Herausfallen gesichert. Umgeben ist der
Filterschalldämpfer an seinem Umfang von einem ringförmigen
Filter 4 aus Polyurethanschaum (PU-Schaum), das Partikel in
angesaugter Umgebungsluft herausfiltert. Der Kreisumfang des
ringförmigen Filters 4 ist im unmontierten Zustand kleiner
als der Aussenumfang des Filterschalldämpfers, sodass das
Filter 4, welches aus PU-Schaum gummielastisch gefertigt ist,
durch Federkraft am Umfang des Schalldämpfers fixiert wird.Fig. 1 shows a cylindrical filter silencer, which is essentially composed of a
2 shows the
Between
A
As shown in FIG. 3, a
The damping
Fig. 4 und 5 zeigen die beiden Bauteile eines Dämpfungselements
3, nämlich ein Dämpfungsblech 9 und ein Absorptionselement
10.
Das Dämpfungsblech 9 wird während der Fertigung in Form eines
Rechtecks aus Lochblech mit quadratischen Löchern entlang der
Lochstege gestanzt, und weist somit keine freistehenden Stege
auf. Anschliessend wird das rechteckförmige Lochblech in der
Art gebogen, dass sich eine konkave Fläche 12 ausbildet, an
die eine konvexe Fläche 11 anschliesst. An die konvexe Fläche
11 schliesst eine ebene Fläche 15 an, die als Grobfiltersegment
15 abgebogen ist. Die konkave Fläche 12 und die
konvexe Fläche 11 verlaufen annähernd parallel, und bilden
einen Zwischenraum 23 aus, in den das Absorptionselement 10,
Fig. 5, eingesetzt wird. Ein Absorptionselement 10 ist
dicker, als der Zwischenraum 23, sodass beim Einsetzen eines
Absorptionselementes 10 in den Zwischenraum 23 die Flächen
11, 12 elastisch auseinanderzubiegen sind. Nach dem
Einsetzten der Absorptionselemente 10 in den Zwischenraum 23,
werden diese aufgrund ihrer Dicke zwischen den Flächen 11, 12
eingeklemmt.
Bei dem verwendeten Material für ein Absorptionselement 10
handelt es sich um einen offenzelligen Schaumstoff, der bei
gleichen Dämpfungseigenschaften nur etwa 6 % des spezifischen
Gewichts herkömmlicher Absorptionsmaterialien wie Wollfilz
aufweist. Die in Fig. 5 dargestellten Absorptionselemente 10
werden rechteckförmig aus Schaumstoffplatten ausgeschnitten
und sind hier lediglich, wie in ihrem eingebauten Zustand
gebogen gezeigt.4 and 5 show the two components of a damping
The damping
The material used for an
Fig. 6 zeigt anhand eines Querschnittsegments eines Filterschalldämpfers
die Anordnung der Dämpfungselemente 3, bestehend
aus dem Dämpfungsblech 9 und dem Absorptionselement 10,
in dem kreiszylindrischen Gehäuse 2 mit der Zentralachse 13.
Die Dämpfungselemente 3 werden in die Nuten 8 radial eingeschoben
und sind in der Art angeordnet, dass ihre Dämpfungsflächen
11, 12 parallel zu der Zentralachse 13 des Gehäuses 2
verlaufen.
Die Breite der Stege 14, und damit auch die
Querschnittsfläche der Lufteinlasskanäle 24 zwischen
benachbarten Dämpfungselementen 3, ist vom Aussenumfang des
Filterschalldämpfers zur Zentralachse 13 hin konstant,
wodurch eine konstante Geschwindigkeit angesaugter
Umgebungsluft gewährleistet ist. Durch diese Anordnung werden
Kompressionsverluste, wie sie bei herkömmlichen Schalldämpfersystemen
auftreten, reduziert.
Am Aussenumfang des Gehäuses 2 fügen sich die Grobfiltersegmente
15 der eingebauten Dämpfungsbleche 9 zu einem Grobfilterring
zusammen, sodass ein Grobfilter als Einzelbauteil
entfällt.
Eine kreisbogenförmige Anordnung der Dämpfungselemente 3 im
Gehäuse 2 verlängert die Lufteinlasskanäle 24, und damit den
Weg der Schallwellen, im Vergleich zu rein radial verlaufenden
Lufteinlasskanälen, wie sie in herkömmlichen Filterschalldämpfern
mit gleichem Aussenumfang auftreten. Allein
diese Verlängerung des Dämpfungsweges, bei gleichen Abmassen
wie herkömmliche Filterschalldämpfer, verbessert die
Schalldämpfung.6 shows the arrangement of the damping
The width of the
On the outer circumference of the
An arc-shaped arrangement of the damping
Insgesamt wird durch die Bauteilreduktion und durch die Verwendung des Melaminschaumes als Absorptionsmaterial nicht nur eine Verringerung des Gesamtgewichtes des Filterschalldämpfers um etwa 20 % erreicht, sondern gleichzeitig der logistische Aufwand reduziert.Overall, due to the reduction in components and the use of melamine foam as an absorption material not only a reduction in the total weight of the filter silencer reached by about 20%, but at the same time the logistical effort reduced.
Selbstverständlich ist die Erfindung nicht auf das gezeigte
und beschriebene Ausführungsbeispiel beschränkt.
So ist beispielsweise die Verwendung anderer Dämpfungs- und
Filtermaterialien, wie sie oben beschrieben sind, ebenfalls
denkbar im Sinn der Erfindung. Of course, the invention is not limited to the exemplary embodiment shown and described.
For example, the use of other damping and filter materials as described above is also conceivable in the sense of the invention.
- 22
- Gehäusecasing
- 33
- Dämpfungselementdamping element
- 44
- Filterfilter
- 55
- Gehäusewand auf der AnschlussseiteHousing wall on the connection side
- 66
- Gehäusewand auf der AbschlussseiteHousing wall on the end side
- 77
- Verbindungsstege für 5, 6Connecting bars for 5, 6
- 88th
- Nuten für 3Grooves for 3
- 99
- Dämpfungsblechdamping plate
- 1010
- Absorptionselementabsorbing element
- 1111
- konvexe Dämpfungsflächeconvex damping surface
- 1212
- konkave Dämpfungsflächeconcave damping surface
- 1313
- Zentralachsecentral axis
- 1414
- Steg zwischen zwei NutenBridge between two grooves
- 1515
- GrobfiltersegmentCoarse filter segment
- 1616
- Spannbandstrap
- 1717
- Schnellverschlussquick release
- 1818
- Rohrpipe
- 1919
- Innengewinde in 18Internal thread in 18th
- 2020
- Anschlussseiteterminal side
- 2121
- Abschlussseitecompletion page
- 2222
- Anschlussflanschflange
- 2323
- Zwischenraumgap
- 2424
- LufteinlasskanalAir inlet duct
Claims (9)
- A filter muffler with a casing (2), configured as monobloc, in which are arranged a plurality of muffling elements (3) consisting of muffling sheets (9) and absorption elements (10), the casing shape of the filter muffler having a center line (13), characterized in that a muffling element (3) consists of only one muffling sheet (9), which only encloses one absorption element (10), and in that the muffling elements (3) are arranged in radial grooves (8) of the casing walls (5, 6) of a filter muffler casing (2), and in which arrangement the muffling surfaces (11, 12) of the muffling elements (3) are oriented parallel to the center line (13) of the casing.
- The filter muffler as claimed in claim 1, characterized in that the muffling elements (3) and the grooves (8) in the casing (2) have a circular arc shape.
- The filter muffler as claimed in claim 1, characterized in that air inlet ducts (24) are formed between adjacent muffling elements (3), which air inlet ducts (24) have a constant cross section.
- The filter muffler as claimed in claim 1, characterized in that the absorption element (10) consists of a foamed material.
- The filter muffler as claimed in claim 1, characterized in that coarse filter segments (15) are arranged on the muffling sheets (9), which coarse filter segments (15) represent, in the installed condition of the muffling elements (3) in the grooves (8), an annular coarse filter.
- The filter muffler as claimed in claim 5, characterized in that tightening straps (6) with rapid-action closing features (17) are arranged around the annular coarse filter made up of coarse filter segments (15).
- The filter muffler as claimed in claim 1, characterized in that an annular filter (4), consisting of PU foam, is arranged at the periphery of the filter muffler.
- The filter muffler as claimed in claim 1, characterized in that the casing (2) has a circular cylindrical shape.
- The filter muffler as claimed in claim 1, characterized in that a tube (18) with internal thread (19) is arranged radially in the casing wall (5) at the connection end (20).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19514990 | 1995-04-24 | ||
DE19514990A DE19514990B4 (en) | 1995-04-24 | 1995-04-24 | filter silencer |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0740080A2 EP0740080A2 (en) | 1996-10-30 |
EP0740080A3 EP0740080A3 (en) | 1998-01-07 |
EP0740080B1 true EP0740080B1 (en) | 2002-09-11 |
Family
ID=7760211
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP96810228A Expired - Lifetime EP0740080B1 (en) | 1995-04-24 | 1996-04-12 | Filter-silencer |
Country Status (9)
Country | Link |
---|---|
US (1) | US5756944A (en) |
EP (1) | EP0740080B1 (en) |
JP (1) | JP2781168B2 (en) |
KR (1) | KR100364891B1 (en) |
CN (1) | CN1084850C (en) |
AT (1) | ATE224011T1 (en) |
CZ (1) | CZ286433B6 (en) |
DE (2) | DE19514990B4 (en) |
NO (1) | NO961620L (en) |
Families Citing this family (23)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19715581C1 (en) * | 1997-04-15 | 1999-02-18 | Weinmann G Geraete Med | Air supply for fans of ventilation devices |
US5861585A (en) * | 1997-09-30 | 1999-01-19 | Aiolos Engineering Corporation | Aeracoustic wind tunnel turning vanes |
CN101188325B (en) * | 1999-09-20 | 2013-06-05 | 弗拉克托斯股份有限公司 | Multi-level antenna |
DE10022240A1 (en) * | 2000-05-08 | 2001-11-15 | Abb Turbo Systems Ag Baden | Filter silencer for induction side of compressor has at least one damping element in form of sound damper block |
DE10128000C1 (en) * | 2002-06-05 | 2002-11-21 | Thermamax Hochtemperaturdaemmu | Radial sound damper, for reducing noise emitted by motor, has damping elements inserted in sound damper housing via radial openings in one base plate closed via cover plate |
DE10225092B4 (en) * | 2001-06-08 | 2014-10-09 | Thermamax Hochtemperaturdämmungen GmbH | silencer |
US6449947B1 (en) * | 2001-10-17 | 2002-09-17 | Fleetguard, Inc. | Low pressure injection and turbulent mixing in selective catalytic reduction system |
US6840746B2 (en) * | 2002-07-02 | 2005-01-11 | Bristol Compressors, Inc. | Resistive suction muffler for refrigerant compressors |
DE10323527B4 (en) * | 2003-05-24 | 2009-04-16 | Danfoss Compressors Gmbh | Refrigerant compressor |
US8272834B2 (en) * | 2004-06-15 | 2012-09-25 | Honeywell International Inc. | Acoustic damper integrated to a compressor housing |
DE102006020334B4 (en) * | 2006-04-28 | 2008-07-10 | Man Diesel Se | filter silencer |
US8104572B2 (en) * | 2010-01-22 | 2012-01-31 | Butler Boyd L | Spin muffler |
DE102010028975A1 (en) | 2010-05-14 | 2012-03-29 | Abb Turbo Systems Ag | Additional compressor housing |
DE102012015907B3 (en) * | 2012-08-10 | 2013-10-17 | Neander Motors Ag | Lifting cylinder combustion engine e.g. outboard type diesel engine, for watercraft, has shaft fixed directly or indirectly to supercharger device at upper front wall of component, which comprises cylinder head and cylinder housing |
JP6152612B2 (en) * | 2012-12-13 | 2017-06-28 | アルパテック株式会社 | Turbocharger silencer and turbocharger using this silencer |
KR102160310B1 (en) | 2013-03-06 | 2020-09-28 | 에이비비 터보 시스템즈 아게 | Sound attenuator of an exhaust gas turbocharger |
EP2990637B1 (en) * | 2014-09-01 | 2019-01-02 | MANN+HUMMEL GmbH | Silencer of an intake system of an internal combustion engine and intake system |
CN105484980A (en) * | 2014-09-19 | 2016-04-13 | 任文华 | Fan |
DE102018100466A1 (en) | 2018-01-10 | 2019-07-11 | Abb Turbo Systems Ag | Filter silencer for an exhaust gas turbocharger of an internal combustion engine |
DE102018100465A1 (en) * | 2018-01-10 | 2019-07-11 | Abb Turbo Systems Ag | Filter silencer for an exhaust gas turbocharger of an internal combustion engine |
DE102018102237A1 (en) * | 2018-02-01 | 2019-08-01 | Man Energy Solutions Se | Silencer and compressor |
CN109404345A (en) * | 2018-12-18 | 2019-03-01 | 南京磁谷科技有限公司 | A kind of air inlet noise-reducing structure of magnetic suspension blower |
DE102019102245A1 (en) | 2019-01-30 | 2020-07-30 | Man Energy Solutions Se | Intake silencer for turbochargers |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE533212A (en) * | ||||
FR985029A (en) * | 1949-02-16 | 1951-07-13 | Tecalemit | Silent suction filter |
DE1290292B (en) * | 1962-06-19 | 1969-03-06 | Maschf Augsburg Nuernberg Ag | Intake silencer for compressor and fan |
DE1503270A1 (en) * | 1965-06-24 | 1970-07-16 | Fischachtaler Maschb Gmbh | Inlet housing for flow machines |
DE2305178C2 (en) * | 1973-02-02 | 1982-02-25 | Klöckner-Humboldt-Deutz AG, 5000 Köln | Air filter with intake silencer for an internal combustion engine |
DE2354126A1 (en) * | 1973-10-29 | 1975-04-30 | Phonotherm Laerm Und Erschuett | Radial blower with pressure side silencer - silencer surrounds rotor like guide wheel and blower housing also acts as protective housing for silencer |
CH603208A5 (en) * | 1975-10-02 | 1978-08-15 | Bbc Brown Boveri & Cie | |
CH594139A5 (en) * | 1975-12-11 | 1977-12-30 | Bbc Brown Boveri & Cie | |
US4204586A (en) * | 1975-12-11 | 1980-05-27 | Bbc Brown Boveri & Company Limited | Silencer on the intake side of a compressor with assembly of axially spaced annular sound-damping elements |
US4316522A (en) * | 1979-11-07 | 1982-02-23 | Industrial Acoustics Company, Inc. | Acoustic filter silencer |
US4266602A (en) * | 1980-02-21 | 1981-05-12 | Westinghouse Electric Corp. | Heat exchanger for cooling electrical power apparatus |
DE8505239U1 (en) * | 1985-02-23 | 1987-08-20 | M.A.N.- B & W Diesel Gmbh, 8900 Augsburg, De | |
EP0574605B1 (en) * | 1992-06-17 | 1996-11-20 | Asea Brown Boveri Ag | Filter-silencer |
CN2191284Y (en) * | 1994-05-31 | 1995-03-08 | 宋虎男 | Purifying silencer for tail gas of motor vehicle |
-
1995
- 1995-04-24 DE DE19514990A patent/DE19514990B4/en not_active Expired - Lifetime
-
1996
- 1996-03-01 US US08/609,688 patent/US5756944A/en not_active Expired - Lifetime
- 1996-03-27 KR KR1019960008654A patent/KR100364891B1/en not_active IP Right Cessation
- 1996-04-12 AT AT96810228T patent/ATE224011T1/en not_active IP Right Cessation
- 1996-04-12 DE DE59609637T patent/DE59609637D1/en not_active Expired - Lifetime
- 1996-04-12 EP EP96810228A patent/EP0740080B1/en not_active Expired - Lifetime
- 1996-04-23 CZ CZ19961171A patent/CZ286433B6/en not_active IP Right Cessation
- 1996-04-23 NO NO961620A patent/NO961620L/en not_active Application Discontinuation
- 1996-04-24 CN CN96107306A patent/CN1084850C/en not_active Expired - Lifetime
- 1996-04-24 JP JP8127770A patent/JP2781168B2/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
DE19514990B4 (en) | 2005-06-30 |
EP0740080A3 (en) | 1998-01-07 |
NO961620D0 (en) | 1996-04-23 |
CN1136143A (en) | 1996-11-20 |
CN1084850C (en) | 2002-05-15 |
CZ286433B6 (en) | 2000-04-12 |
DE59609637D1 (en) | 2002-10-17 |
KR960038143A (en) | 1996-11-21 |
JP2781168B2 (en) | 1998-07-30 |
CZ117196A3 (en) | 1996-11-13 |
ATE224011T1 (en) | 2002-09-15 |
US5756944A (en) | 1998-05-26 |
KR100364891B1 (en) | 2003-03-15 |
EP0740080A2 (en) | 1996-10-30 |
NO961620L (en) | 1996-10-25 |
DE19514990A1 (en) | 1996-10-31 |
JPH08296597A (en) | 1996-11-12 |
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