EP0666408A1 - Silencieux, en particulier silencieux d'échappement pour un appareil de chauffage pour véhicule, indépendant du moteur - Google Patents

Silencieux, en particulier silencieux d'échappement pour un appareil de chauffage pour véhicule, indépendant du moteur Download PDF

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Publication number
EP0666408A1
EP0666408A1 EP95101344A EP95101344A EP0666408A1 EP 0666408 A1 EP0666408 A1 EP 0666408A1 EP 95101344 A EP95101344 A EP 95101344A EP 95101344 A EP95101344 A EP 95101344A EP 0666408 A1 EP0666408 A1 EP 0666408A1
Authority
EP
European Patent Office
Prior art keywords
housing
exhaust gas
wire
channel
space
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Withdrawn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
EP95101344A
Other languages
German (de)
English (en)
Inventor
Fritz Mohring
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
Application filed by J Eberspaecher GmbH and Co KG filed Critical J Eberspaecher GmbH and Co KG
Publication of EP0666408A1 publication Critical patent/EP0666408A1/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Withdrawn legal-status Critical Current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
    • F01N1/02—Silencing apparatus characterised by method of silencing by using resonance
    • F01N1/04—Silencing apparatus characterised by method of silencing by using resonance having sound-absorbing materials in resonance chambers
    • 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
    • F01N1/084—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling the gases flowing through the silencer two or more times longitudinally in opposite directions, e.g. using parallel or concentric tubes
    • 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
    • F01N1/12—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling using spirally or helically shaped channels
    • F01N1/125—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling using spirally or helically shaped channels 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
    • F01N1/00—Silencing apparatus characterised by method of silencing
    • F01N1/24—Silencing apparatus characterised by method of silencing by using 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
    • 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
    • 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
    • F01N2490/20—Chambers being formed inside the exhaust pipe without enlargement of the cross section of the pipe, e.g. resonance chambers

Definitions

  • the invention relates to a muffler in structural association with an engine-independent vehicle heating device, in particular exhaust gas muffler, with a metallic housing having an inlet connection and an outlet connection, in which at least one perforated passage channel is provided for the exhaust gas, the space between the housing and the passage channel being at least partially is filled with a sound-absorbing material, such as rock wool or the like.
  • the passage duct for the exhaust gas is formed by a perforated tube which is welded into the muffler housing or a bottom, which may be perforated, arranged therein.
  • the sound absorbing material is stuffed into the space between the perforated pipe and the housing wall.
  • the present invention has for its object to provide a simple and effective exhaust silencer for engine-independent vehicle heaters, which is easier and cheaper to manufacture.
  • a wire body such as a wire spiral, a wire cage or the like
  • the sound-absorbing material formed as at least one prefabricated pressing body, in which the wire body is arranged.
  • the invention solves the problem with particularly simple means.
  • a simple wire body preferably a wire spiral
  • This wire spiral can be prefabricated in a particularly simple manner together with the sound-absorbing material as a pressing body.
  • the passage channel as a simple wire spiral or the like.
  • the pressing body can have a single passage channel through which the exhaust gas flows.
  • the pressing body has a plurality of passage channels which are parallel to one another and flow through the exhaust gas in the same direction or in opposite directions, and is optionally divided. If the flow through the passageways is in the same direction, a distributor space for the exhaust gas is advantageously provided in the housing in the flow direction behind the inlet connection and a collection space for the exhaust gas in front of the outlet connection.
  • a passage for the exhaust gas from one passage channel to the other is advantageously provided in the end region of the housing interior.
  • a further improvement in the sound-absorbing effect is obtained if a further pressing body, preferably one which is divided transversely to the direction of flow, is arranged in the transition space and has a through-flow channel which flows in opposite directions connecting, defined in its boundary by a wire body transition channel.
  • a method for producing a muffler according to the invention is characterized in that at least one wire body, preferably a wire spiral, is first placed in a corresponding press mold for the production of a pressed body, the space around the wire body is filled with sound-absorbing material, in particular rock wool, and this is then filled is pressed together. This results in a particularly simple manufacture of a compact according to the invention.
  • the press body or bodies obtained in this way can then be inserted into a muffler housing divided in the main flow direction, after which the two, preferably identical, housing halves are sealed together, in particular by folding.
  • the pressing body (s) can be inserted into a jacket-shaped muffler housing that is open on at least one end face, after which the end cover (s) of the housing can be tightly connected to one another, preferably by folding.
  • inlet port and the outlet port are expediently od.dergl with the housing by welding. tightly connected.
  • the silencer has a metallic housing 1, which is provided with an inlet connector 2 and an outlet connector 3.
  • a perforated passage 4 for the exhaust gas runs between the inlet nozzle 2 and the outlet nozzle 3.
  • the space between the housing 1 and the passage 4 is filled with a sound-absorbing material 5, such as rock wool or the like.
  • the passage channel 4 is defined in its limitation by a wire body 6, which, as in the exemplary embodiment shown, is preferably designed as a wire spiral.
  • the wire spiral 6 serves to support the sound-absorbing material 5 and at the same time enables the exhaust gas (flowing through the muffler in the direction of the arrows shown) into the sound-absorbing material 5 for the purpose of sound absorption.
  • the sound-absorbing material 5 is designed as a prefabricated press body, in which the wire body 6 is arranged.
  • the pressing body 105 made of sound-absorbing material has two parallel through-passages 104a and 104b through which the exhaust gas flows according to the flow arrows shown, the limits of which are defined by wire spirals 106a and 106b, respectively.
  • a transition space 107 for the exhaust gas from the passage duct 104a to the passage duct 104b is provided in the housing 101 in the end region of its interior.
  • FIG. 3 shows a further variant of the invention, according to which the pressing body 205 has two parallel through-flow channels 204a and 204b with wire spirals 206a and 206b, respectively, through which the exhaust gas flows according to the arrows.
  • a distributor space 208 and a collection space 209 for the exhaust gas are provided in the housing 201 in the flow direction behind the inlet nozzle 202 and in front of the outlet nozzle 203.
  • FIGS. 4a and 4b basically corresponds to the embodiment according to FIG. 3.
  • the embodiment according to FIGS. 4a and 4b has a pressing body consisting of two partial bodies 305a and 305b.
  • Each partial body 305a and 305b contains two passage channels 304a ', 304b' and 304a '', 304b '' with associated wire spirals 306a ', 306a' 'and 306b', 306b ''.
  • FIGS. 5a and 5b basically corresponds to the configuration according to FIGS. 2a and 2b.
  • a further pressing body divided transversely to the flow direction is arranged in the transition space, whereby practically two identical partial bodies 405b, 405c are formed.
  • the pressing bodies 405b and 405c likewise have passage channels 404b and 404c with wire spirals 406b and 406c, respectively, for the purpose of connecting the passage channels 404a 'and 404a' 'contained in the pressing body 405a to one another.
  • FIGS. 6a and 6b corresponds in principle to the configuration shown in FIGS. 1a and 1b. However, it differs from the embodiment according to FIGS. 1a and 1b in particular by the formation of the housing 501, which will be explained later in connection with the description of the manufacture of the silencer according to the invention.
  • cross section of the passage can not only be circular as in the exemplary embodiments shown, but can also have other shapes within the scope of what is technically possible, such as oval, rectangular, etc.
  • the muffler according to the invention is produced in a simple manner in such a way that at least one wire body 6 or 106a, 106b, preferably designed as a wire spiral, is initially used to produce the pressed body 5, 105, 205, 305a, 305b, 405a, 405b, 405c, 505 or 206a, 206b ... is placed in a corresponding press mold, the space around the wire body 6 or 106a, 106b or 206a, 206b ... with sound-absorbing material 5 or 105 or 205 ..., in particular rock wool , is filled and this is then pressed together.
  • the pressing body 505 is inserted into a jacket-shaped housing 501, which is initially open on both end faces in the exemplary embodiment shown. Subsequently the housing jacket 501 and the end covers 501a and 501b of the housing 501 are preferably connected to one another by folding (folding connections 501a 'and 501b').

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Exhaust Silencers (AREA)
EP95101344A 1994-02-02 1995-02-01 Silencieux, en particulier silencieux d'échappement pour un appareil de chauffage pour véhicule, indépendant du moteur Withdrawn EP0666408A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19944403099 DE4403099A1 (de) 1994-02-02 1994-02-02 Schalldämpfer, insbesondere Abgasschalldämpfer, für ein motorunabhängiges Fahrzeugheizgerät
DE4403099 1994-02-02

Publications (1)

Publication Number Publication Date
EP0666408A1 true EP0666408A1 (fr) 1995-08-09

Family

ID=6509251

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95101344A Withdrawn EP0666408A1 (fr) 1994-02-02 1995-02-01 Silencieux, en particulier silencieux d'échappement pour un appareil de chauffage pour véhicule, indépendant du moteur

Country Status (4)

Country Link
EP (1) EP0666408A1 (fr)
CZ (1) CZ22195A3 (fr)
DE (1) DE4403099A1 (fr)
RU (1) RU95101574A (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1255071A1 (fr) * 2001-05-04 2002-11-06 Mecaplast Sam Dispositif d'atténuation du niveau sonore d'un circuit de fluide gazeux
CN104405487A (zh) * 2014-11-20 2015-03-11 南车资阳机车有限公司 一种内燃机车用阻抗复合式消声器
US20150218984A1 (en) * 2014-02-06 2015-08-06 Gary Hash Motorcycle muffler baffle

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19546882C2 (de) * 1995-12-15 1998-11-26 Webasto Thermosysteme Gmbh Fahrzeugheizgerät
DE102007055401B4 (de) * 2007-11-19 2010-04-15 Festo Ag & Co. Kg Abluftschalldämpfer für pneumatische Einrichtungen

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR727267A (fr) * 1931-11-16 1932-06-15 Auto Product G M B H Dispositif d'amortissement des bruits engendrés par l'aspiration dans les moteurs à combustion interne
US2072961A (en) * 1934-03-01 1937-03-09 Burgess Lab Inc C F Silencer
FR841390A (fr) * 1938-01-21 1939-05-17 Dispositif silencieux pour pot d'échappement de moteurs de véhicules automobiles et autres applications
GB563110A (en) * 1943-01-25 1944-07-31 Frederick Louis Vaughan Improvement in means for silencing the exhaust of internal-combustion engines
WO1986004954A1 (fr) * 1985-02-19 1986-08-28 Malmsten Sven O Conduite de gaz d'echappement amortissant les bruits et son procede de fabrication
EP0353761A1 (fr) * 1988-08-05 1990-02-07 Grünzweig + Hartmann Aktiengesellschaft Silencieux pour gaz d'échappement

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR727267A (fr) * 1931-11-16 1932-06-15 Auto Product G M B H Dispositif d'amortissement des bruits engendrés par l'aspiration dans les moteurs à combustion interne
US2072961A (en) * 1934-03-01 1937-03-09 Burgess Lab Inc C F Silencer
FR841390A (fr) * 1938-01-21 1939-05-17 Dispositif silencieux pour pot d'échappement de moteurs de véhicules automobiles et autres applications
GB563110A (en) * 1943-01-25 1944-07-31 Frederick Louis Vaughan Improvement in means for silencing the exhaust of internal-combustion engines
WO1986004954A1 (fr) * 1985-02-19 1986-08-28 Malmsten Sven O Conduite de gaz d'echappement amortissant les bruits et son procede de fabrication
EP0353761A1 (fr) * 1988-08-05 1990-02-07 Grünzweig + Hartmann Aktiengesellschaft Silencieux pour gaz d'échappement

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1255071A1 (fr) * 2001-05-04 2002-11-06 Mecaplast Sam Dispositif d'atténuation du niveau sonore d'un circuit de fluide gazeux
FR2824383A1 (fr) * 2001-05-04 2002-11-08 Mecaplast Sa Dispositif d'attenuation du niveau sonore d'un circuit de fluide gazeux
US20150218984A1 (en) * 2014-02-06 2015-08-06 Gary Hash Motorcycle muffler baffle
CN104405487A (zh) * 2014-11-20 2015-03-11 南车资阳机车有限公司 一种内燃机车用阻抗复合式消声器

Also Published As

Publication number Publication date
DE4403099A1 (de) 1995-08-03
CZ22195A3 (en) 1995-08-16
RU95101574A (ru) 1996-12-10

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