EP1405988A2 - Silencieux - Google Patents

Silencieux Download PDF

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Publication number
EP1405988A2
EP1405988A2 EP03015081A EP03015081A EP1405988A2 EP 1405988 A2 EP1405988 A2 EP 1405988A2 EP 03015081 A EP03015081 A EP 03015081A EP 03015081 A EP03015081 A EP 03015081A EP 1405988 A2 EP1405988 A2 EP 1405988A2
Authority
EP
European Patent Office
Prior art keywords
housing
metal foam
absorber
foam molded
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.)
Withdrawn
Application number
EP03015081A
Other languages
German (de)
English (en)
Other versions
EP1405988A3 (fr
Inventor
Michael Humburg
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Eberspaecher Climate Control Systems GmbH and Co KG
Original Assignee
J Eberspaecher GmbH and Co KG
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=31984411&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP1405988(A2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by J Eberspaecher GmbH and Co KG filed Critical J Eberspaecher GmbH and Co KG
Publication of EP1405988A2 publication Critical patent/EP1405988A2/fr
Publication of EP1405988A3 publication Critical patent/EP1405988A3/fr
Withdrawn legal-status Critical Current

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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
    • F01N1/08—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling
    • F01N1/083—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling using transversal baffles defining a tortuous path for the exhaust gases or successively throttling exhaust gas flow
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
    • F01N1/00—Silencing apparatus characterised by method of silencing
    • F01N1/08—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling
    • F01N1/082—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling by passing the exhaust gases through porous members
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
    • F01N1/00—Silencing apparatus characterised by method of silencing
    • F01N1/08—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling
    • F01N1/10—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling in combination with sound-absorbing materials
    • 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
    • F01N13/16—Selection of particular materials
    • 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
    • F01N13/18—Construction facilitating manufacture, assembly, or disassembly
    • F01N13/1861—Construction facilitating manufacture, assembly, or disassembly the assembly using parts formed by casting or moulding

Definitions

  • the present invention relates to a silencer, in particular an exhaust silencer for a heater, in particular for an auxiliary heater or for an auxiliary heater Motor vehicle.
  • a silencer usually includes a housing in which at least one flow-through, sound-absorbing absorber is arranged.
  • the silencer is usually for one Installation provided in a flow-carrying line, see above that the muffler has a housing inlet and a housing outlet has.
  • the present invention addresses the problem an improved for a silencer of the type mentioned Specify embodiment, particularly in the frame series production is inexpensive to manufacture.
  • the invention is based on the general idea of metal foam molded parts for training or shaping the absorber and / or to use the housing.
  • Metal foam moldings are particularly easy and inexpensive as standard produce, which also for the silencer inexpensive manufacture is achievable.
  • Metal foams form a new class of materials among metals.
  • pores are specifically created in the material, for example in order to obtain advantageous mechanical properties with a very low weight.
  • the resulting metallic, cellular structures typically have a density between 0.3 and 1 g / cm 3 and thus a component weight that is as low as is known from plastic parts.
  • metal foams show significantly better properties in terms of rigidity, strength and energy absorption compared to plastics.
  • Metal foams can be made from a variety of metallic Create elements. Most developed are here foams based on aluminum and zinc; as well are foams based on iron, copper, nickel, lead and magnesium can be produced. As a basis for metal foams Metal powder usually used by atomization metallic melting with air or protective gas, e.g.
  • Nitrogen or natural gas A vote on the mechanical and physical properties required in each case of the metal foam is done by using Metal powder mixtures or alloy powder, which subsequently can be mixed with blowing agent powder or protective gas.
  • a powder mixture can be used to produce a metal foam molded part for example by cold isostatic pressing are precompacted into bolts, which are then Hot extrusion can be processed into profiles. Sections of these profiles can be used in a shaping process Tool close to the melting point of the metal alloy are heated, the blowing agent then splitting off gas and Creates foam that fills the shaping tool. After cooling, the foamed mold can a metal foam molded part can be removed that changes regularly characterized by a closed surface on all sides and about 10 to 25% of the weight of the comparable massive casting. With such a procedure you can Metal foams from almost all known aluminum and Zinc alloys are manufactured.
  • the silencer 1 can thus be integrated into a flow-conducting line 6 be that of the flow of line 6 as well is flowed through.
  • a flow-conducting line 6 is this line 6 around an exhaust line of a heater, in particular a heater that works independently of the engine, such as e.g. a heater or an auxiliary heater, a motor vehicle.
  • Sound waves for example, when operating the Heaters arise, spread out in line 6 and can by integrating the silencer 1 in the line 6 also enter the silencer 1.
  • the absorber 3 is arranged in the housing 2 and can be flowed through and has a sound-absorbing effect. That way when flowing through the muffler 1 which is in the Flow propagating sound can be dampened.
  • absorbers 3 and housings 2 are now formed by metal foam parts 7, 8 formed.
  • metal foam molded parts 7, 8 can in particular as castings, preferably as die-cast parts, and thus in the context of series production manufacture inexpensively.
  • metal foam molded parts 7, 8 are used, the form the absorber 3 or the housing 2 and in the following as the first metal foam molded part 7 and the second metal foam molded part 8 are referred to. These two are useful Shaped metal parts 7, 8 designed as identical parts, so that they in the same tool, especially in the same mold are producible. This can result in additional costs for additional Tools can be saved.
  • a further saving is made in the embodiment shown here thereby allowing the two metal foam molded parts 7, 8 each have a housing half 2a or 2b and each have an absorber half 3a or 3b. That means, that each housing half 2a, 2b, integral with one Absorber half 3a, 3b is made.
  • each housing half 2a, 2b, integral with one Absorber half 3a, 3b is made.
  • the silencer 1 according to the invention is thereby particularly inexpensive to manufacture.
  • the housing inlet 4 formed by an inlet pipe 9 which extends in a circumferential direction closed, so O-shaped opening 10 inserted is; which are formed in the second metal foam molding 8 is.
  • the inlet pipe 9 projects through a U-shaped one Recess 11 through that on the first metal foam molded part 7 is trained.
  • the housing outlet is also in a corresponding manner 5 formed by an outlet pipe 12 that, on the one hand into an O-shaped opening 13 of the first metal foam molding 7 is inserted and on the other hand a U-shaped recess 14 of the second metal foam molding 8 penetrates.
  • the tubes 9, 12 can already in the manufacture of the metal foam molded parts 7, 8 in these are integrated by the pipes 9, 12 made of metal foam be cast or foamed. For example, let steel pipes are easily encased in aluminum foam or foam around.
  • the metal foam molded parts 7, 8 each have a bottom 15, of which two wall sections 16 and 17 around the edge protrude vertically.
  • the two wall sections 16, 17 are in 2 U-shaped and have expediently the same wall thickness.
  • the second wall section 17 expediently one Wall thickness, staggered inwards, resulting in on the bottom 15 forms a paragraph 18, which according to the view Fig. 2 also runs in a U-shape and in particular the Width of a wall thickness of one of the wall sections 16, 17 has.
  • the two shaped metal foam parts are identical 7, 8, rotated by 180 ° to each other, one inside the other pluggable, such that the first wall section 16 of the a metal foam molding 7, 8 on the paragraph 18 of each other metal foam molded part 7, 8 comes to rest.
  • the openings 10, 13 are each in the outer first Wall section 16 formed.
  • the tubes 9, 12 sealed particularly simply against the housing 2 become.
  • the recesses 11 and 14 are accordingly on the inner, second wall sections 17 formed, which makes it possible is to pre-assemble the tubes 9, 12 as it is the U-shaped Recesses 11, 14 allow the two metal foam molded parts 7, 8 also in the case of pre-assembled tubes 9, 12 to be stuck.
  • the two metal foam molded parts 7, 8 are soldered to one another, welded or glued; is also a screw or Riveting conceivable if the tightness to the outside is not must be particularly effective.
  • the metal foam molded parts 7, 8 with an open-cell foam or with a closed-cell To produce foam.
  • An embodiment is preferred in which the metal foam molded parts 7, 8 in sections, which with assembled muffler 1 a housing outside Form 26, have a closed-pore outer skin.
  • the housing 2 thus formed is one appropriate seal between the assembled metal foam molded parts 7, 8, gas-tight to the outside.
  • the housing 2 thus has a robust outside of the housing 26, so that on additional cladding elements or shells can be dispensed with.
  • the silencer according to the invention 1 is particularly inexpensive.
  • metal foam molded parts 7, 8 so that they are in areas which with assembled silencer 1 one Exposed to noise, an open-pore surface 22 have.
  • These are expediently those in the operation of the Muffler 1 through which the flow flows, in particular those facing the flow channels 21 Surfaces of the webs 20 and the inside of the second Wall sections 17 and the inside of the floors 15.
  • the metal foam molded parts are expediently produced 7, 8 with a casting process, in particular with a die casting process, such that those removed from the mold Intermediate products have a closed-pore outer skin.
  • a casting process in particular with a die casting process, such that those removed from the mold Intermediate products have a closed-pore outer skin.
  • Mechanical exposure is then carried out Postprocessing, in which the Outer skin is removed, which creates an open-pore Surface.
  • the essence of the present invention rewrite that to manufacture the silencer 1 metal foam molded parts 7, 8 are used, the Form parts of the housing 2 and / or parts of the absorber 3 and inexpensive to manufacture as part of a series production are.
  • Two identical metal foam molded parts are advantageous 7, 8 used to make the housing 2 including integrated To produce absorber 3.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Exhaust Silencers (AREA)
EP03015081A 2002-10-05 2003-07-03 Silencieux Withdrawn EP1405988A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2002146596 DE10246596C5 (de) 2002-10-05 2002-10-05 Schalldämpfer, insbesondere für Heizgerät
DE10246596 2002-10-05

Publications (2)

Publication Number Publication Date
EP1405988A2 true EP1405988A2 (fr) 2004-04-07
EP1405988A3 EP1405988A3 (fr) 2005-01-05

Family

ID=31984411

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03015081A Withdrawn EP1405988A3 (fr) 2002-10-05 2003-07-03 Silencieux

Country Status (2)

Country Link
EP (1) EP1405988A3 (fr)
DE (1) DE10246596C5 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7430928B2 (en) * 2006-02-08 2008-10-07 Battelle Memorial Insititute Method and apparatus for concentrating vapors for analysis
DE102009038822A1 (de) * 2009-08-25 2011-03-10 Alantum Europe Gmbh Absorptionsschalldämpfer
EP2469052A1 (fr) * 2010-12-23 2012-06-27 Volkswagen AG Dispositif de nettoyage de gaz d'échappement

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004020545B4 (de) * 2004-04-27 2006-10-19 Webasto Ag Zusatzheizgeräteanordnung mit einem Abgasrohr mit reduzierter Geräuschemission sowie Fahrzeug mit einer solchen Anordnung
DE102004044332A1 (de) 2004-09-09 2006-03-30 Robert Bosch Gmbh Heizeinrichtung mit einem schallgedämpften Ansaugsystem

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2200796A1 (de) 1972-01-08 1973-07-19 Volkswagenwerk Ag Schalldaempfer, insbesondere fuer kraftfahrzeug-warmluftheizungen
EP1217339A2 (fr) 2000-12-19 2002-06-26 Daniel Industries, Inc., Amortisseur de bruit et méthode pouré utiliser avec un débimètre à ultrasons

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3159237A (en) * 1959-10-28 1964-12-01 Nelson Muffler Corp Exhaust muffler
JPS5933898Y2 (ja) * 1980-01-16 1984-09-20 日産自動車株式会社 消音器
JPH0370932A (ja) * 1989-08-08 1991-03-26 Mitsubishi Electric Home Appliance Co Ltd 消音装置
DE9212607U1 (de) * 1992-09-18 1994-02-24 M. Faist GmbH & Co KG, 86381 Krumbach Schallwellen dämpfendes und/oder dämmendes Bauelement aus Schaumstoff
DE19950894A1 (de) * 1999-04-15 2000-10-19 Eberspaecher J Gmbh & Co Brennkrammer einer Heizung

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2200796A1 (de) 1972-01-08 1973-07-19 Volkswagenwerk Ag Schalldaempfer, insbesondere fuer kraftfahrzeug-warmluftheizungen
EP1217339A2 (fr) 2000-12-19 2002-06-26 Daniel Industries, Inc., Amortisseur de bruit et méthode pouré utiliser avec un débimètre à ultrasons

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7430928B2 (en) * 2006-02-08 2008-10-07 Battelle Memorial Insititute Method and apparatus for concentrating vapors for analysis
US8191435B2 (en) 2006-02-08 2012-06-05 Battelle Memorial Institute Method and apparatus for concentrating vapors for analysis
DE102009038822A1 (de) * 2009-08-25 2011-03-10 Alantum Europe Gmbh Absorptionsschalldämpfer
EP2469052A1 (fr) * 2010-12-23 2012-06-27 Volkswagen AG Dispositif de nettoyage de gaz d'échappement

Also Published As

Publication number Publication date
DE10246596B4 (de) 2004-08-26
DE10246596A1 (de) 2004-04-15
EP1405988A3 (fr) 2005-01-05
DE10246596C5 (de) 2010-01-28

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