WO2007101412A1 - Silencieux en construction modulaire et procédé de fabrication de celui-ci - Google Patents

Silencieux en construction modulaire et procédé de fabrication de celui-ci Download PDF

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Publication number
WO2007101412A1
WO2007101412A1 PCT/DE2006/000404 DE2006000404W WO2007101412A1 WO 2007101412 A1 WO2007101412 A1 WO 2007101412A1 DE 2006000404 W DE2006000404 W DE 2006000404W WO 2007101412 A1 WO2007101412 A1 WO 2007101412A1
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WO
WIPO (PCT)
Prior art keywords
vii
fluid
main fluid
fluid line
housing
Prior art date
Application number
PCT/DE2006/000404
Other languages
German (de)
English (en)
Inventor
Udo GÄRTNER
Josef Schwarz
Original Assignee
Woco Industrietechnik Gmbh
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Woco Industrietechnik Gmbh filed Critical Woco Industrietechnik Gmbh
Priority to PCT/DE2006/000404 priority Critical patent/WO2007101412A1/fr
Publication of WO2007101412A1 publication Critical patent/WO2007101412A1/fr

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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
    • F01N1/003—Silencing apparatus characterised by method of silencing by using dead chambers communicating with gas flow passages
    • 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
    • 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
    • F01N1/023—Helmholtz resonators
    • 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
    • F01N13/18—Construction facilitating manufacture, assembly, or disassembly
    • F01N13/1838—Construction facilitating manufacture, assembly, or disassembly characterised by the type of connection between parts of exhaust or silencing apparatus, e.g. between housing and tubes, between tubes and baffles
    • 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
    • F01N2490/00—Structure, disposition or shape of gas-chambers
    • F01N2490/15—Plurality of resonance or dead chambers
    • F01N2490/155—Plurality of resonance or dead chambers being disposed one after the other in flow direction

Definitions

  • the present invention relates to a silencer, in particular for a motor vehicle, wherein the silencer can be flowed through by a fluid acted upon by pulsations, comprising at least one housing and at least one Fluidleitmodul housable in the housing and a motor vehicle and a method for producing a silencer.
  • DE 100 34 243 A1 discloses a silencer for the inlet and / or outlet in compressed air systems.
  • baffles are arranged, which run obliquely to the basic flow direction and impose a meandering flow path of the air flowing through.
  • a disadvantage of this muffler is that to adapt the muffler to the desired muffling requirements of the entire muffler must be redesigned, d. H. the geometry of the individual components of the muffler must be adapted to the respective desired sound damping properties.
  • different silencers must be provided for the different conditions of use, which leads to high storage costs. Finally, this silencer does not allow broadband attenuation of sound pulsations.
  • DE 200 18 690 U1 discloses another generic multi-chamber reflection muffler.
  • This multi-chamber reflection muffler with integrated absorption uses standardized module cassettes for sound absorption and flow guidance, which alternately direct the flow centrally through a respective module center and through respective gaps between a module outer edge and a muffler jacket.
  • a disadvantage of this multi-chamber reflection silencer is that its assembly is also complicated and error prone.
  • the individual module cassettes must be individually inserted into the jacket.
  • absorption material such as stainless steel wool is additionally provided to achieve a broadband damping effect.
  • the fluid guide elements in particular each, comprise at least one main fluid line, in particular comprising at least one Hauptfluid effetswandung, at least one main fluid inlet and / or at least one Hauptfluidauslenfin, and at least one surrounding the main fluid line aperture, preferably the main fluid line and the aperture are integrally formed.
  • the fluid guide elements can be connected to one another substantially in the area of the main fluid line, in particular in the region of the main fluid inlet and / or in the region of the main fluid outlet.
  • the invention further proposes that at least one fluid guide element comprises at least one within the main fluid line, in particular in the region of the main fluid inlet and / or Hauptfluidauslasses, anordbares closure element, wherein the closure element preferably integrally with the main fluid line, in particular the Hauptfluid effetswandung, and / or the Aperture is formed.
  • At least one, in particular the main fluid line facing, outer edge of at least one aperture of at least one Fluidleitelements at receiving the Fluidleitmoduls in the housing at least partially applied to at least one inner wall of the housing, in particular at least one chamber is preferably substantially defined by the aperture, the housing and / or the Hauptfluid effetswandung can be formed.
  • at least one fluid guide element at least one opening, preferably a plurality of openings, in at least one Hauptfluid effetswandung, at least one opening, preferably a plurality of openings, in at least one aperture and / or at least one opening, preferably a plurality of openings in at least one closure element.
  • At least two fluid guide elements can be combined in such a way that at least one Helmholtz resonator and at least one multi-chamber reflection muffler can be formed for the fluid flowing through the muffler.
  • a muffler according to the invention may further be characterized by at least one first fluid guide element comprising at least one substantially closed Hauptfluid effetswandung and at least one substantially closed aperture, wherein in particular within the main fluid line of the first Fluidleitelements at least one closure element, which preferably has at least one opening arranged is.
  • At least one second fluid guide element which has at least one opening in at least one main fluid line wall, in particular for connecting a chamber at least partially bounded by the diaphragm of the second fluid guide element to the main fluid line of the second fluid guide element, and at least one substantially closed aperture, wherein in particular within the main fluid line of the second Fluidleitelements at least one closure element, which preferably has at least one opening, is arranged.
  • a silencer according to the invention may comprise at least a third fluid guide element comprising at least one substantially closed Hauptfluid effet and at least one opening in at least one aperture, wherein in particular within the main fluid line of the third Fluidleitelements at least one closure element, which preferably closed is or at least has an opening is arranged.
  • a muffler according to the invention may also be characterized as an alternative or in addition to the aforementioned three alternatives by at least a fourth Fluid guide element comprising at least one opening in at least one Hauptfluid effetdung, in particular for connecting a at least partially limited by the aperture of the fourth Fluidleitelements chamber with the main fluid line of the fourth Fluidleitelements, and at least one opening in at least one aperture, wherein in particular within the main fluid line of the fourth Fluidleitelements at least one closure element, which is preferably closed or at least has an opening arranged.
  • At least two fluid guide elements in particular at least two first, second, third and / or fourth Fluidleit mandate, are integrally formed and / or at least two Fluidleitiata a group comprising at least a first Fluidleitelement, at least a second Fluidleitelement, at least a third Fluidleitelement and / or at least a fourth Fluidleitelement, are integrally formed.
  • an inner cross section of the housing and an outer cross section of the Fluidleitmoduls and / or at least one Fluidleitelements are at least partially complementary to each other, in particular the inner cross section of the housing triangular, square, rectangular, star-shaped, polygonal, circular and / or elliptical is trained.
  • the invention provides that the inner cross-section of at least one main fluid line of at least one Fluidleitelements and / or at least one opening in at least one Hauptfluid effetswandung, at least one aperture and / or in at least one closure element at least one Fluidleitelements triangular, square, rectangular, star-shaped, polygonal, is circular and / or elliptical.
  • the invention also provides that at least one axis of symmetry, in particular a longitudinal axis, at least one main fluid line of at least one Fluidleitelements parallel to at least one axis of symmetry, preferably a surface normal, at least one aperture of Fluidleitelements is arranged, in particular coincides the axis of symmetry of the main fluid line with the axis of symmetry of the diaphragm or the Symmetry axis of the main fluid line offset from the axis of symmetry of the diaphragm runs.
  • an inventive silencer sees before at least two within the at least one aperture of at least one Fluidleitelements at least partially limited chamber arrangeable partitions, wherein the partitions in particular integrally with at least one Hauptfluid effetswandung, at least one aperture and / or at least one closure element of the Fluidleitelements be formed.
  • At least two sub-chambers within the chamber can be formed by means of the partitions, wherein preferably at least one opening connects the main fluid line of Fluidleitelements with at least one sub-chamber and / or at least one partition at least one opening, preferably for connecting two sub-chambers with each other, includes.
  • broadband sound pulsations are attenuated, preferably in the range of about 0 to 1000Hz, more preferably in the range of 0 to 750Hz and more preferably in the range of 0 to 500Hz.
  • At least one Fluidleitelement in particular the first, second, third and / or fourth Fluidleitelement, at least one main fluid line, at least one aperture, at least one partition and / or the housing at least partially a plastic, a metal and / or a composite material.
  • the muffler with at least one exhaust tract of a motor vehicle is connectable.
  • a motor vehicle comprising at least one silencer according to the invention.
  • the invention further proposes at least one internal combustion engine and at least one exhaust gas tract, wherein the silencer is arranged in particular in a secondary air supply to the exhaust gas tract.
  • the object relating to the method is achieved by a method for producing a silencer, in particular a silencer according to the invention, characterized by the steps of providing at least one housing, providing at least two fluid guide elements, connecting the fluid guide elements to at least one fluid guide module and arranging the fluid guide module within the housing ,
  • the fluid guide elements are selected from a multiplicity of standardized fluid guide elements, in particular as a function of a desired sound damping effect, preferably at least one frequency spectrum to be damped.
  • At least one fluid guide element in particular before a connection of the fluid guide elements to the fluid guide module and / or before an arrangement of the fluid guide module within the housing, is preferably adapted as a function of the desired sound damping effect, in particular at least one opening in at least a main fluid conduit wall, at least one diaphragm, at least one partition wall and / or at least one closure element is formed.
  • a preferred embodiment of the method provides that before, during and / or after the arrangement of the Fluidleitmoduls in the housing, the housing is at least partially connected to the Fluidleitmodul, in particular with at least one fluid guide.
  • the silencer consists of a housing wall, in which a Fluidleitmodul can be used.
  • the Fluidleitmodul consists of individual fluid guide elements, which prior to assembly of the Muffler are connected substantially directly with each other.
  • an essentially direct connection is understood to mean that the fluid-conducting elements are fastened to one another in a substantially self-supporting manner in order to achieve the fluid-conducting module.
  • suitable connection devices between the fluid guide elements can be provided.
  • the individual Fluidleitieri can be dispensed with a common support structure to which the individual Fluidleit mandate are to be attached.
  • the individual fluid guide elements are combined with each other in such a way that a damping in the desired frequency spectrum is achieved by a corresponding diversion of a fluid flow in the muffler due to cross-sectional jumps, way extensions and flow deflections.
  • sound level reductions for example in the low-frequency range, such as 0-500 Hz, within air-conducting systems can be achieved by the silencer according to the invention.
  • the individual fluid guide elements can be selected from a multiplicity of standardized fluid guide elements.
  • Standardization ensures that the fluid guide elements can be combined with one another essentially as desired and the fluid guide module can be accommodated in the housing.
  • the individual fluid guide elements differ in that there are openings in the main fluid passages, diaphragms or closure elements arranged in the main fluid passage, wherein the individual fluid guide elements have both the number of openings, the arrangement of the openings and the length of the respective main fluid line can distinguish.
  • the arrangement of the Fluidleitmoduls within the housing in particular chambers are formed within the muffler, which may differ in function of the geometry of the respective Fluidleitmaschine in their size and function.
  • chambers can be formed within the muffler due to the modular structure, through which the fluid to be damped can flow, in particular with the formation of cross-sectional jumps in the fluid path. Due to the forced deflections of the fluid subjected to acoustic pulsations by the specially tuned system units, we achieve the desired reduction of the sound level. The formation of the way extensions also leads to a significant reduction in the necessary construction volume and the necessary length. Also a combination of multiple reflection silencer mechanisms with properties of a Helmholtz resonators, in which the trained chambers partly act as resonator chambers, leads to a significant reduction in construction volume or construction length compared to pure Helmholtz resonator systems. The possibility of forming a combination of at least one multi-reflection silencer and a Helmholtz resonator within the silencer according to the invention also allows an accurate certain, preferably broadband, attenuation of Schallpulsationen within the fluid.
  • FIG. 1a a plan view of a first fluid-conducting element of a silencer according to the invention
  • FIG. 1b shows a cross-sectional view of the fluid-conducting element of FIG. 1a from the direction A;
  • FIG. 2a shows a plan view of a second fluid-conducting element of a silencer according to the invention
  • FIG. 2b shows a cross-sectional view of the fluid guide element of FIG. 2a from the direction
  • FIG. 3a shows a plan view of a third fluid-conducting element of a silencer according to the invention
  • FIG. 3b shows a cross-sectional view of the fluid guide element of FIG. 3a from the direction
  • FIG. 4a shows a plan view of a fourth fluid-conducting element of a silencer according to the invention
  • FIG. 4b shows a cross-sectional view of the fluid guide element of FIG. 4a from the direction
  • FIG. 5 shows a cross-sectional view of a fifth fluid-conducting element of a silencer according to the invention
  • FIG. 3 shows a cross-sectional view of a sixth fluid-conducting element of a silencer according to the invention
  • FIG. 7a shows a cross-sectional view of a seventh fluid-conducting element of a silencer according to the invention
  • FIG. 7b shows a cross-sectional view of the fluid guide element of FIG. 7a from the direction
  • FIG. 8a shows a cross-sectional view of an eighth fluid-conducting element of a silencer according to the invention
  • FIG. 8b shows a cross-sectional view of the fluid guide element of FIG. 8a from the direction
  • FIG. 9 is a cross-sectional view of one connecting several
  • Fluidleitance formed Fluidleitmodul
  • FIG. 10 shows a cross-sectional view of a silencer according to the invention according to a first embodiment comprising a fluid-conducting module according to FIG. 7;
  • Figure 11 a cross-sectional view of a silencer according to the invention according to a second embodiment.
  • FIGS. 1a and 1b show a first fluid-conducting element 1 of a silencer according to the invention.
  • the fluid guide element consists essentially of a main fluid line 3, which is delimited by a main fluid line wall 5.
  • the first Fluidleitelement 1 comprises a diaphragm 7, which is arranged substantially perpendicular to a longitudinal direction of the main fluid conduit 3, wherein the diaphragm can also be arranged inclined to this longitudinal direction, that may be formed cone-shaped.
  • the main fluid conduit wall 5 and the diaphragm 7 are integrally formed.
  • the fluid guiding element 1 has a first connecting device 9 and a second connecting device 11.
  • the first connecting device 9 and the second connecting device 11 are in the form of formed complementary projections or recesses.
  • the connection devices 9, 11 serve to connect the first fluid guide element 1 with further fluid guide elements to form a Fluidleitmoduls. It can be provided in particular that the fluid guide elements by means of the connecting devices 9, 11 are detachably connected to each other.
  • the connecting devices 9, 11, not shown Verclipsvoriquesen to achieve, for example, in an attachment of Fluidleitemia each other by mating the same, or not shown thread, so that the Fluidleitmaschine are connected by screwing together include.
  • FIGS. 2a and 2b show a second fluid-conducting element 1 '.
  • the elements of the second Fluidleitelements 1 ', which correspond to those of the first Fluidleitelements 1 bear the same reference numerals, but simply deleted.
  • the second fluid-conducting element 1 ' has openings 13' in the main fluid line wall 5 '.
  • a third fluid-conducting element 1 is shown in Figures 3a and 3b.
  • the elements of the third fluid-directing element 1" which correspond to those of the first fluid-conducting element 1 bear the same reference numerals, although they are painted twice.
  • the third fluid guide element 1 "openings 15" on.
  • a fourth fluid-conducting element 1 "' is shown in Figures 4a and 4b.
  • the elements of the fourth fluid-conducting element 1'" which correspond to those of the first fluid-conducting element 1 bear the same reference numerals, but with a triple coat.
  • the fourth fluid guide element 1'" both openings 13 '"in a Hauptfluid effetswandung 5'" and openings 15 '"in a diaphragm 7'" on.
  • FIG. 5 shows a cross-sectional view of a fifth Fluidleitelements 1 1V , the elements of the fifth Fluidleitelements 1 1V , which correspond to those of the first Fluidleitelements 1 bear the same reference numerals, but four times deleted.
  • the fifth fluid-conducting element 1 1V essentially has a construction comparable to the second fluid-conducting element 1 '.
  • the fifth fluid guide 1 1V instead of a second connection device for connecting the fifth Fluidleitelements 1 1V with another fluid guide a third connection device 17 1V on.
  • the third connection device 17 1V is formed integrally with the diaphragm 7 1V or the main fluid conduit wall 5 1V in the case of the fifth fluid-conducting element 1 1V .
  • the third connection device 17 may be 1V designed such that it has its own connection device, so that it can be connected via the second connection device 11 'of the second Fluidleitelements V with this.
  • the third connecting device 17 IV has a circumferential bead 18 1V, which allows to delay a pipe or a hose to the third connecting device 17 1V, so that this tube and this tube can be connected to the fifth fluid guide 1 1V.
  • the connecting device 17 1 V has a surface structure, not shown, which prevents slippage of the tube or hose from the connecting device 17 1 V , for example in the form of a corrugation.
  • FIG. 6 shows a sixth fluid-conducting element 1 v .
  • the elements of the sixth Fluidleitelements l v which correspond to those of the first Fluidleitelements 1 bear the same reference numerals, however, painted five times.
  • the sixth fluid guide element 1 v has a second diaphragm 19 V in addition to a first diaphragm 7 V.
  • Both the first aperture T and the second aperture 19 V are formed integrally with the main fluid line wall 5 V.
  • the main fluid line wall 5 V has respective openings 13 V. Further, 19 V openings 21 v are formed in the aperture.
  • the sixth fluid-conducting element 1 v has a fourth connecting device 23 v . Similar to the connecting device 17 1V of the fifth Fluidleit institute 1 1V , the connecting device 23 V is used to connect the sixth Fluidleitelements l v with a tube or hose, not shown.
  • the sixth fluid guide comprises l v compared to the Fluidleitmaschinen 1 V, 1 ", 1"', 1 IV furthermore a closure element 25 V.
  • the closure element 25 V By the closure element 25 V , the main fluid line 3 V is closed.
  • the closure element 25 V causes a flowing into the main fluid line 3 V fluid is directed into the openings 13 V and thus emerges from the main fluid line 3 V.
  • FIGS. 7a and 7b show a seventh fluid-conducting element 1 V1 .
  • 7a shows a cross-sectional view from direction B IV of FIG. 7b
  • FIG. 7b shows a cross-sectional view from direction A 1V of FIG. 7a.
  • the seventh Fluidleitelement 1 V1 in addition to a diaphragm 7 V1 and a main fluid line wall 5 v ⁇ partitions 27 V1 .
  • Chambers are formed by the partition walls 27 V1 when installing the seventh Fluidleitelements 1 V1 in a housing, which are each bounded by the diaphragm T ⁇ the partition walls 27 V1 and the main fluid line 5 V1 .
  • these chambers may act as resonance chambers of a Helmholtz resonator for a fluid flowing through the main fluid conduit 3 V1 .
  • 5 VI openings 13 V1 are formed in the main fluid line , through which the resonance chambers can communicate with the main fluid line 3 VI .
  • the respectively formed resonance chambers Due to the asymmetrical arrangement of the partition walls 27 V1 , the respectively formed resonance chambers have different volumes, whereby the damping in a wide frequency range is made possible.
  • FIGS. 8 a and 8 b show an eighth fluid guide element 1 vu .
  • FIG. 8 a shows a cross-sectional view of the fluid guiding element 1 vu from the direction B v of FIG. 8 b
  • FIG. 8 b shows a cross-sectional view of the fluid guiding element 1 vn from the direction A v of FIG. 8 a.
  • the fluid-conducting element 1 vu Similar to the seventh fluid-conducting element 1 V1 , the fluid-conducting element 1 vu likewise has partitions 27 vii , 31 vii .
  • 31 V11 have the partition walls of Fluidleitelements l vu openings 29 VU and only the partition 27 V "is closed.
  • This allows that, when the assembly the Fluidleitelements l vu a guided through the muffler fluid circularly around the main fluid line 3 l can be performed.
  • in the panel occurs, for example a fluid through the openings 15 VU 7 YU, then flows through the respective openings 29 VU in the partition walls 31 VU,
  • Figure 8a substantially counterclockwise and then flows through openings 13 V ", which are formed in the main fluid line 5 VU , in the main fluid line 3 v ⁇ of Fluidleitelements 1 V11 .
  • FIG. 8a makes it possible to guide a fluid with the interposition of a larger number of cross-sectional jumps, each of which generates a damping in a certain frequency range.
  • FIGS. 1 a to 8 b show examples of fluid guide elements to be used in the silencer according to the invention.
  • the properties of the fluid-conducting elements 1, 1 ', 1 ", 1'", 1 iv , 1 v , 1 vi , 1 vii can also be combined with one another in any other fluid guide elements, not shown.
  • FIG. 9 shows a cross-sectional view of a fluid-conducting module 100.
  • the Fluidleitmodul 100 includes fluid guide elements 102, 104, 106, 108, 110, 112.
  • the fluid guide element 102 is similar to the fifth Fluidleitelement 1 1V constructed.
  • the fluid guide element 102 additionally comprises a closure element 114.
  • the fluid guide element 104 essentially corresponds in its construction to the fourth fluid guide element 1 '".
  • the fluid guide element 106 is constructed similarly to the second fluid guide element 1 ', but in contrast to the second fluid guide element 1' comprises a longer main fluid line 115 and a larger number of openings 116 in a main fluid line wall 118.
  • the fluid guide element 108 essentially corresponds in terms of its construction to the third fluid guide element 1 ".
  • the fluid guide element 110 has, in contrast to the previously described Fluidleitmaschinen two closure elements 120, 122, the openings 124 and 126, respectively.
  • the fluid guide element 112 corresponds in terms of its basic structure to the sixth fluid guide element 1 v , but a main fluid line 128 has no closure element in contrast to the sixth fluid guide element V.
  • the first fluid guide element 102 is connected to the fluid guide element 104 via a connection device 130, in particular in the form of a snap connection (not shown).
  • Corresponding connection devices 132, 134, 136 and 138 are used to connect the fluid guide elements 104, 106, 108, 110 and 112 with each other.
  • the mode of operation of a first embodiment of a silencer 140 according to the invention will be explained below with reference to FIG.
  • the muffler 140 comprises a housing 142, which is formed substantially tubular and has a circular inner cross-section. After a composition of the Fluidleitmoduls 100 of the muffler is formed by the Fluidleitmodul 100 is inserted into the housing 142. About not shown fastening devices then the Fluidleitmodul 100 is fixed in the housing 142.
  • the fluid-guiding module 100 can be connected to the inner wall of the housing 142 by bonding at least one diaphragm 144 of the fluid-conducting element 102 or at least one diaphragm 146 of the fluid-conducting element 112.
  • the operation of the muffler 140 will now be described with reference to a flow path F of a fluid.
  • the fluid flows via a fluid inlet 148 of the Fluidleitelements 102 into the main fluid line 150 of the Fluidleitelements 102.
  • the muffler 140 is used in a secondary air supply to an exhaust tract of a motor vehicle. Since the main fluid conduit 150 is closed by the closure member 114, the fluid is directed through openings 152 in the main fluid conduit wall 154 of the fluid conducting member 102 into a chamber 156.
  • the chamber 156 is essentially bounded by the housing 142, the diaphragm 144, and an aperture 158 of the fluid guide element 104.
  • the fluid passes through openings 160 formed in the baffle 158 into a chamber 162 which is substantially formed by the fluid conducting element 104. From the chamber 162, the fluid then passes through openings 164 in a main fluid line 166 of Fluidleitelements 104. Due to this fluid guide results in an extension of the flow path F by flow deflections through the chambers 156 and 162 and to sound reflections due to the cross-sectional jumps through the openings 152 , 160, 164 and the different volumes of the main fluid line 150, the chamber 156, the chamber 162 and the main fluid line 166 are effected. From the main fluid line 166, the fluid then enters the main fluid line 168 of the fluid guide element 106.
  • Fluid guide elements 106 and 108 subsequently result in a damping of sound pulsations present in the fluid in that the fluid guide elements 106 and 108 form Helmholtz resonators.
  • the fluid flowing through the main fluid line 168 of the Fluidleitelements 106 and the main fluid line 170 of the Fluidleitelements 108 fluid communicates via the openings 116 in the Fluidleitelement 106 with a first resonance chamber 172.
  • the resonance chamber 172 is still through openings 174 in a diaphragm 176 of the Fluidleitelements 108 with a second Resonance chamber 178 in conjunction.
  • the damping behavior of the Helmholtz resonator can be adapted to the desired frequency spectrum.
  • fluid guide elements with partitions as provided, for example, in the fluid guide element shown in FIGS. 7a, 7b, can be used to form a multiplicity of resonance chambers.
  • the fluid flow divides into a plurality of partial flows due to the construction of the fluid guide element 110.
  • a first partial flow flows via openings 180 into chambers formed by the fluid guide element 110, while a second fluid flow flows through the openings 124 in the closure element 120.
  • This second fluid stream then flows through an opening 126 in the closure element 122 into the main fluid line 128 of the Fluidleitelements 112.
  • the passing through the openings 180 fluid flow flows through openings 184 from a chamber 182 into a chamber 186 and from there via openings 188 in a chamber 190.
  • the fluid then flows through openings 192 in the main fluid line 128 from where it leaves the muffler 140 via a fluid outlet 193. Due to this fluid guide through the fluid guide elements 110 and 112, a broadband damping can be achieved due to the variety of deflections and cross-sectional jumps that the fluid passes through.
  • FIG. 11 shows a cross-sectional view of a second embodiment of a silencer according to the invention in the form of a silencer 200.
  • the muffler 200 includes a housing 202 in which a Fluidleitmodul 204 is formed.
  • the Fluidleitmodul 204 in turn consists of Fluidleitiatan 206, 208 and 210.
  • the Fluidleitmodul 204 is not fully assembled inserted into the housing 202, but the Fluidleitmodul 204 constructed in the housing 202.
  • the fluid guide 206 is inserted into the housing 202 and fixed therein.
  • the fixing takes place in particular by gluing an outer surface of an aperture 212 of the Fluidleitelements 206 with an inner wall of the housing 202. Subsequently, the Fluidleitelement 208 is inserted into the housing 202 and connected via an adhesive connection 214 with the Fluidleitelement 206. Finally, the fluid guide element 210 is inserted into the housing 202 in such a way that it is connected to the fluid guide element 208 via an adhesive connection 216.
  • a fluid which is passed through the muffler 200 follows the flow pattern indicated as F '.
  • the fluid flows from a main fluid line 218 via openings 220 into a chamber 222, via openings 224 which are distributed over the circumference of an orifice 226 of the Fluidleitelements 208, into a chamber 228 and from there via openings 230 in a main fluid line 232 of the Fluidleitelements 208th
  • the main fluid conduit 232 exits the fluid via openings 234 into a chamber 236, from which it flows via openings 238 into a chamber 240. From the chamber 240, the fluid is then passed through openings 242 in a main fluid line 244 of the Fluidleitelements 210. From the main fluid line 244 it leaves the muffler 200.
  • a further improvement of the damping properties of the muffler can be achieved by using fluid guide elements with corresponding partitions, through which a fluid guide, as achieved, for example, by means of the fluid guide element shown in FIGS. 8a and 8b.
  • a silencer is provided by the invention, the simple due to the use of standardized individual elements in the form of standardized fluid guide elements and the modular structure thus present in the Different desired damping characteristics can be adjusted.
  • a user selects the various suitable fluid-conducting elements, adds them to a fluid-conducting module, which is self-supporting, in particular due to the direct connection of the fluid-conducting elements, into a housing, where the fluid-conducting module is fixed and thus the muffler with the desired damping properties is formed.
  • the self-supporting structure of the Fluidleitmoduls not to change the geometry of the individual elements of the muffler come, which malfunction of the muffler can be avoided.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Exhaust Silencers (AREA)

Abstract

L'invention concerne un silencieux (200), notamment pour un véhicule automobile, le silencieux (200) pouvant être traversé par un fluide soumis à des pulsations sonores, comprenant au moins un boîtier (202) et au moins un module (204) conducteur de fluide logeable dans le boîtier (202), le module (204) conducteur de fluide comprenant au moins deux éléments (208, 210) conducteurs de fluide standardisés pouvant être pour l'essentiel reliés directement l'un à l'autre. L'invention concerne également un procédé de fabrication d'un silencieux, notamment par les étapes suivantes : mise à disposition d'au moins un boîtier, mise à disposition d'au moins deux éléments conducteurs de fluide, assemblage des éléments conducteurs de fluide en au moins un module conducteur de fluide et disposition du module conducteur de fluide à l'intérieur du boîtier.
PCT/DE2006/000404 2006-03-08 2006-03-08 Silencieux en construction modulaire et procédé de fabrication de celui-ci WO2007101412A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/DE2006/000404 WO2007101412A1 (fr) 2006-03-08 2006-03-08 Silencieux en construction modulaire et procédé de fabrication de celui-ci

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/DE2006/000404 WO2007101412A1 (fr) 2006-03-08 2006-03-08 Silencieux en construction modulaire et procédé de fabrication de celui-ci

Publications (1)

Publication Number Publication Date
WO2007101412A1 true WO2007101412A1 (fr) 2007-09-13

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Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011108058A1 (de) 2011-07-21 2013-01-24 Mann + Hummel Gmbh Abgasschalldämpfer
DE102011108057A1 (de) 2011-07-21 2013-01-24 Mann + Hummel Gmbh Abgasschalldämpfer
EP2757235A1 (fr) 2013-01-16 2014-07-23 Henn GmbH & Co.KG Silencieux et son procédé de fabrication
EP2757234A1 (fr) 2013-01-16 2014-07-23 Henn GmbH & Co.KG Silencieux et son procédé de fabrication
DE102011002869B4 (de) * 2011-01-19 2014-08-07 Siemens Aktiengesellschaft Reflektionsschalldämpfer
AT514568A4 (de) * 2014-03-07 2015-02-15 Henn Gmbh & Co Kg Schalldämpfer
WO2015092488A1 (fr) 2013-12-19 2015-06-25 Teklas Kaucuk Sanayi Ve Ticaret A.S. Silencieux modulaire
DE202014007986U1 (de) * 2014-10-01 2016-01-05 GM Global Technology Operations LLC (n. d. Gesetzen des Staates Delaware) Schalldämpfer
US11808187B2 (en) 2021-03-01 2023-11-07 Caterpillar Inc. Noise attenuation components
DE102022212686A1 (de) 2022-11-28 2024-05-29 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung eingetragener Verein Rohrschalldämpfer sowie Bausatz und Verfahren zu seiner Herstellung

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1741078A (en) * 1928-02-17 1929-12-24 Pratt Chuck Company Engine muffler
US4674594A (en) * 1984-05-07 1987-06-23 Johannes Pedersen Silencer and a method of manufacturing the silencer
US6167984B1 (en) * 1996-12-19 2001-01-02 Abb Flakt Ab Device and a method for sound reduction in a transport system for gaseous medium and use of the device in an exhaust system for ships
EP1291570A2 (fr) * 2001-09-07 2003-03-12 Avon Polymer Products Limited Amortisseur de bruit et de vibrations

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1741078A (en) * 1928-02-17 1929-12-24 Pratt Chuck Company Engine muffler
US4674594A (en) * 1984-05-07 1987-06-23 Johannes Pedersen Silencer and a method of manufacturing the silencer
US6167984B1 (en) * 1996-12-19 2001-01-02 Abb Flakt Ab Device and a method for sound reduction in a transport system for gaseous medium and use of the device in an exhaust system for ships
EP1291570A2 (fr) * 2001-09-07 2003-03-12 Avon Polymer Products Limited Amortisseur de bruit et de vibrations

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011002869B4 (de) * 2011-01-19 2014-08-07 Siemens Aktiengesellschaft Reflektionsschalldämpfer
DE102011108057A1 (de) 2011-07-21 2013-01-24 Mann + Hummel Gmbh Abgasschalldämpfer
DE102011108057B4 (de) * 2011-07-21 2015-12-31 Mann + Hummel Gmbh Abgasschalldämpfer
DE102011108058A1 (de) 2011-07-21 2013-01-24 Mann + Hummel Gmbh Abgasschalldämpfer
EP2757234A1 (fr) 2013-01-16 2014-07-23 Henn GmbH & Co.KG Silencieux et son procédé de fabrication
EP2757235A1 (fr) 2013-01-16 2014-07-23 Henn GmbH & Co.KG Silencieux et son procédé de fabrication
WO2015092488A1 (fr) 2013-12-19 2015-06-25 Teklas Kaucuk Sanayi Ve Ticaret A.S. Silencieux modulaire
AT514568A4 (de) * 2014-03-07 2015-02-15 Henn Gmbh & Co Kg Schalldämpfer
AT514568B1 (de) * 2014-03-07 2015-02-15 Henn Gmbh & Co Kg Schalldämpfer
WO2015131217A1 (fr) 2014-03-07 2015-09-11 Henn Gmbh & Co Kg. Silencieux
US9890752B2 (en) 2014-03-07 2018-02-13 Henn Gmbh & Co Kg. Muffler
DE202014007986U1 (de) * 2014-10-01 2016-01-05 GM Global Technology Operations LLC (n. d. Gesetzen des Staates Delaware) Schalldämpfer
US11808187B2 (en) 2021-03-01 2023-11-07 Caterpillar Inc. Noise attenuation components
DE102022212686A1 (de) 2022-11-28 2024-05-29 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung eingetragener Verein Rohrschalldämpfer sowie Bausatz und Verfahren zu seiner Herstellung
EP4375557A1 (fr) * 2022-11-28 2024-05-29 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Silencieux tubulaire et kit et procédé pour sa fabrication

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