DE1031055B - Container with sound absorption filling and guide channel for pulsating gas flow, in particular sound absorbers for internal combustion engines - Google Patents

Container with sound absorption filling and guide channel for pulsating gas flow, in particular sound absorbers for internal combustion engines

Info

Publication number
DE1031055B
DE1031055B DEE11245A DEE0011245A DE1031055B DE 1031055 B DE1031055 B DE 1031055B DE E11245 A DEE11245 A DE E11245A DE E0011245 A DEE0011245 A DE E0011245A DE 1031055 B DE1031055 B DE 1031055B
Authority
DE
Germany
Prior art keywords
perforated
container
internal combustion
gas flow
combustion engines
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.)
Pending
Application number
DEE11245A
Other languages
German (de)
Inventor
Dr-Ing Herbert Martin
Walter Bauerschmidt
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
Priority to DEE11245A priority Critical patent/DE1031055B/en
Priority to FR1158817D priority patent/FR1158817A/en
Priority to GB2721256A priority patent/GB841828A/en
Publication of DE1031055B publication Critical patent/DE1031055B/en
Pending legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01NGAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N13/00Exhaust 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
    • F01N13/18Construction facilitating manufacture, assembly, or disassembly
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01NGAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N1/00Silencing apparatus characterised by method of silencing
    • F01N1/24Silencing apparatus characterised by method of silencing by using sound-absorbing materials
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01NGAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2310/00Selection of sound absorbing or insulating material
    • F01N2310/02Mineral wool, e.g. glass wool, rock wool, asbestos or the like
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01NGAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2310/00Selection of sound absorbing or insulating material
    • F01N2310/04Metallic wool, e.g. steel wool, copper wool or the like
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01NGAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2470/00Structure or shape of gas passages, pipes or tubes
    • F01N2470/02Tubes being perforated
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01NGAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2470/00Structure or shape of gas passages, pipes or tubes
    • F01N2470/24Concentric tubes or tubes being concentric to housing, e.g. telescopically assembled
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01NGAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2530/00Selection of materials for tubes, chambers or housings
    • F01N2530/26Multi-layered walls

Landscapes

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

Description

DEUTSCHESGERMAN

Die Erfindung ist darauf gerichtet, die Gaskanäle in schluckstoffgefüllten Behältern, insbesondere Schalldämpfern, so gegen Verlust des Schallschluckstoffes zu sichern, daß der einmal vorgegebene Schluckstoffwiderstand und damit die akustische Abstimmung aufrechterhalten wird.The invention is directed to the gas ducts in containers filled with absorbent, in particular silencers, to secure against loss of the sound absorbing substance that the given resistance of the absorbing substance and so that the acoustic coordination is maintained.

Es sind Schalldämpfer mit verlustlosem glattem Durchgang bekannt, bei denen die mit Schallschluckstoff versehenen Gaskanäle oder Räume perforiert sind und bei denen zwischen den perforierten Flächen und dem Schallschluckstoff ein meist feinmaschiges Netz angeordnet ist. Selbst bei feinster Ausführung der Netze verändern derartige Schalldämpfer bereits nach kurzer Betriebszeit schon infolge Verlust an Schallschluckstoff ihren akustischen Schluckstoffwiderstand und damit ihre innere Abstimmung.There are known sound absorbers with a lossless smooth passage, in which those with sound absorbing material provided gas channels or spaces are perforated and those between the perforated surfaces and A mostly fine-meshed network is arranged on the sound-absorbing material. Even with the finest execution of the Networks change such silencers after a short period of operation due to the loss of sound absorbing material their acoustic resistance to absorption and thus their internal coordination.

Die Erfindung hat sich nun zur Aufgabe gestellt, die den Schallschluckstoff zerstörenden Schwingungen der Netze zu unterbinden, die unter Umständen auch ein Zusammensacken des Schallschluckstoffes bei größeren Volumina hervorrufen können.The invention has now set itself the task of eliminating the vibrations that destroy the sound-absorbing substance to prevent the nets, which may also cause the sound absorbing substance to collapse can cause larger volumes.

Zu diesem Zweck wird das sich an eine perforierte Wand anlegende engmaschige Netz auch auf seiner zur Schallschluckstoffüllung hin gelegenen Seite mit einer perforierten Wand bedeckt, so daß das Netz also zwischen zwei perforierten Wänden gehalten wird.For this purpose, the close-meshed network, which is placed against a perforated wall, is also placed on his the side facing the sound absorbing material is covered with a perforated wall, so that the network held between two perforated walls.

Die Doppelwände, die vorzugsweise mit Rundlöchern versehen sind, übernehmen als starkwandige Gebilde die erforderliche Festigkeit der Kanal- bzw. Raumabschlüsse. Weiterhin wird erfindungsgemäß vorgesehen, daß das Netz insbesondere bei grob perforierten Wänden zwischen zwei starkwandigen, gleich oder in bezug auf die Größe und gegebenenfalls den Abstand der Löcher verschieden perforierten Wänden angeordnet ist.The double walls, which are preferably provided with round holes, take over as thick-walled Form the required strength of the channel or room closures. Furthermore, according to the invention provided that the network between two thick-walled walls, especially in the case of roughly perforated walls, is the same or with regard to the size and optionally the spacing of the holes differently perforated walls is arranged.

In der Zeichnung sind Ausführungsbeispiele des Erfindungsgegenstandes schematisch dargestellt. Es zeigtExemplary embodiments of the subject matter of the invention are shown in the drawing shown schematically. It shows

Fig. 1 einen Behälter mit glattem Durchgang mit radial beaufschlagtem Schluckstoff,Fig. 1 shows a container with a smooth passage with radially loaded absorbent,

Fig. 2 einen Behälter mit radial und axial beaufschlagtem Schluckstoff.Fig. 2 shows a container with radially and axially acted upon absorbent.

Zwischen dem Kanal 1, der einen sogenannten lochperforierten glatten Durchgang 2 besitzt, und dem Behältermantel 3 befindet sich der Schluckstoff 4. Der perforierte Kanal 1 ist umhüllt von dem feinmaschigen Netz 5, welches seinerseits vom perforierten Rohr 6 umhüllt wird. Das Netz 5 erstreckt sich über den ganzen Bereich der perforierten Stellen und des dort angrenzenden Schluckstoffes 4.Between the channel 1, which has a so-called hole perforated smooth passage 2, and the container jacket 3 is the absorbing material 4. The perforated channel 1 is covered by the fine-mesh net 5, which in turn is enveloped by the perforated pipe. 6 The network 5 extends over the entire area of the perforated points and the absorbent 4 adjoining there.

In Fig. 1 ist der Kanal 1 an seinem ganzen Umfang innerhalb des Behälters 3 perforiert.In FIG. 1, the channel 1 is perforated within the container 3 over its entire circumference.

Bei der in Fig. 2 gezeigten Behälterausführung mündet das Eintrittsrohr 7 in eine erste leere Kammer 12 mit einem perforierten Abschluß 11, wobei derAus-Behälter mit SchallschluckstoffüllungIn the case of the container design shown in FIG. 2, the inlet pipe 7 opens into a first empty chamber 12 with a perforated closure 11, the out container with sound absorbing material filling

und Führungskanal für pulsierendeand guide channel for pulsating

Gasströmung, insbesondere SchalldämpferGas flow, especially silencers

für Brennkraftmaschinenfor internal combustion engines

Anmelder:Applicant:

Fa. J. Eberspächer,
Eßlingen/Neckar, Eberspächerstr. 24
J. Eberspächer,
Eßlingen / Neckar, Eberspächerstr. 24

Dr.-Ing. Herbert Martin und Walter Bauerschmidt,Dr.-Ing. Herbert Martin and Walter Bauerschmidt,

Eßlingen/Neckar,
sind als Erfinder genannt worden
Esslingen / Neckar,
have been named as inventors

trittskanal 8 koaxial zum Eintrittsrohr 7 an die erste Kammer angeschlossen, perforiert und beiderseits offen ist. Die Perforation 2 befindet sich im Bereich der zweiten Kammer, die mit Schluckstoff 4 ausgefüllt ist. Zwischen der ersten und zweiten Kammer befindet sich eine Querwand aus einem perforierten Teil 9, so daß der Schluckstoff 4 auch frontal beaufschlagt wird. Das Netz 5 liegt an der Perforation 2 des Austrittskanals 8 und an der Querwand9 an; es wird wiederum von einem perforierten Rohr 6 umhüllt bzw. durch eine perforierte Querwand gegen den Schallschluckstoff abgedeckt.outlet channel 8 is connected coaxially to the inlet pipe 7 to the first chamber, perforated and open on both sides. The perforation 2 is located in the area of the second chamber, which is filled with absorbent 4. Between the first and second chambers there is a transverse wall made of a perforated part 9, so that the absorbent 4 is also acted on from the front. The network 5 rests against the perforation 2 of the outlet channel 8 and against the transverse wall 9; it is in turn enveloped by a perforated tube 6 or covered against the sound-absorbing material by a perforated transverse wall.

Claims (2)

PATENTANSPRÜCHE:PATENT CLAIMS: 1. Behälter mit Schallschluckstoffüllung, dessen Führungskanal für pulsierende Gasströmung von einer perforierten Wand mit darüberliegendem engmaschigem Netz gebildet wird, insbesondere Schalldämpfer für Brennkraftmaschinen, dadurch gekennzeichnet, daß das Netz zwischen zwei perforierten Wänden angeordnet ist.1. Container filled with sound absorbing material, whose guide channel for pulsating gas flow from a perforated wall with an overlying close-meshed network is formed, in particular Silencer for internal combustion engines, characterized in that the network is between two perforated Walls is arranged. 2. Behälter nach Anspruch 1, dadurch gekennzeichnet, daß das Netz zwischen zwei starkwandigen, gleichartig oder in bezug auf die Größe und2. Container according to claim 1, characterized in that the network between two thick-walled, similar or in terms of size and 809 524/237809 524/237 3 43 4 gegebenenfalls den Abstand der Löcher verschieden britische Patentschriften Nr. 495 576, 498 533;possibly the spacing of the holes in various British Patent Nos. 495 576, 498 533; perforierten Kanalwänden angeordnet ist. USA.-Patentschrift Nr. 2 583 366;perforated channel walls is arranged. U.S. Patent No. 2,583,366; . Kauf fmann-Schmidt, »Schalldämpfer für. Buy fmann-Schmidt, »Silencer for In Betracht gezogene Druckschriften: ,; Automobilmotoren«, Verlag Krayn, Berlin 1932,Documents considered:,; Automobilmotoren «, Verlag Krayn, Berlin 1932, Deutsche Patentschrift Nr. 665 167; " 5 S. 52/53.German Patent No. 665 167; "5 pp. 52/53. Hierzu 1 Blatt Zeichnungen1 sheet of drawings © 80S· 528/237 5.58© 80S 528/237 5.58
DEE11245A 1955-09-06 1955-09-06 Container with sound absorption filling and guide channel for pulsating gas flow, in particular sound absorbers for internal combustion engines Pending DE1031055B (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DEE11245A DE1031055B (en) 1955-09-06 1955-09-06 Container with sound absorption filling and guide channel for pulsating gas flow, in particular sound absorbers for internal combustion engines
FR1158817D FR1158817A (en) 1955-09-06 1956-08-21 Protective device for maintaining the acoustic resistance of absorbent substances and the acoustic tuning of vessels subjected to oscillatory stresses, filled with absorbent substances for pulsating flow
GB2721256A GB841828A (en) 1955-09-06 1956-09-05 "improvements relating to casings for the pulsating flow of gases"

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEE11245A DE1031055B (en) 1955-09-06 1955-09-06 Container with sound absorption filling and guide channel for pulsating gas flow, in particular sound absorbers for internal combustion engines

Publications (1)

Publication Number Publication Date
DE1031055B true DE1031055B (en) 1958-05-29

Family

ID=7068057

Family Applications (1)

Application Number Title Priority Date Filing Date
DEE11245A Pending DE1031055B (en) 1955-09-06 1955-09-06 Container with sound absorption filling and guide channel for pulsating gas flow, in particular sound absorbers for internal combustion engines

Country Status (3)

Country Link
DE (1) DE1031055B (en)
FR (1) FR1158817A (en)
GB (1) GB841828A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3941206A (en) * 1974-05-08 1976-03-02 Burgess Industries Incorporated Noise attenuating snubber
EP0074954A1 (en) * 1981-03-20 1983-03-30 Peabody Abc Corp Sound attenuator.
CN109424390A (en) * 2017-08-30 2019-03-05 湖北福田专用汽车有限公司 Silencing exhaust pipe device

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3175640A (en) * 1961-04-19 1965-03-30 Fukuo Saeki Muffling devices for air handling systems
US3209861A (en) * 1963-10-28 1965-10-05 Walker Mfg Co Muffler with two longitudinally separated chambers
US3688868A (en) * 1971-08-26 1972-09-05 Stephen J Gibel Expansion chambered, fail-safe muffler
US3688870A (en) * 1971-08-26 1972-09-05 Stephen J Gibel Through-flow aspirator muffler
US4314621A (en) * 1979-03-07 1982-02-09 Caterpillar Tractor Co. Fluidborne noise attenuator
EP0074220A3 (en) * 1981-08-26 1984-05-16 Lancaster Glass Fibre Limited Improvements in or relating to inserts for silencers
DE3205185C2 (en) * 1982-02-13 1985-12-12 Wilfried 6238 Hofheim Seitz Method for producing a silencer filling for a muffler as well as silencer filling produced according to this method
JP2003041923A (en) * 2001-07-30 2003-02-13 Honda Motor Co Ltd Exhaust muffler
EP1507071B2 (en) 2003-08-11 2019-10-16 Faurecia Emissions Control Technologies, Germany GmbH Exhaust silencer
CN104564241A (en) * 2015-01-23 2015-04-29 安徽江淮汽车股份有限公司 Exhaust muffler
FR3060649B1 (en) * 2016-12-19 2019-08-02 Renault S.A.S MOTOR VEHICLE EXHAUST LINE HAVING NOISE LIMITATION MEANS

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE665167C (en) * 1935-12-09 1938-09-22 Servais Silencers Ltd Absorbent material for silencers
GB495576A (en) * 1937-05-22 1938-11-16 Fernand Jiles Joseph Servais Improvements in and relating to silencers for gaseous currents
GB498533A (en) * 1937-07-30 1939-01-10 Francois Cementation Co Ltd Improvements in or relating to silencers for exhaust and other gaseous currents
US2583366A (en) * 1948-02-09 1952-01-22 Willard H Engels Muffler with perforated cylinder containing inwardly and rearwardly inclined holes

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE665167C (en) * 1935-12-09 1938-09-22 Servais Silencers Ltd Absorbent material for silencers
GB495576A (en) * 1937-05-22 1938-11-16 Fernand Jiles Joseph Servais Improvements in and relating to silencers for gaseous currents
GB498533A (en) * 1937-07-30 1939-01-10 Francois Cementation Co Ltd Improvements in or relating to silencers for exhaust and other gaseous currents
US2583366A (en) * 1948-02-09 1952-01-22 Willard H Engels Muffler with perforated cylinder containing inwardly and rearwardly inclined holes

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3941206A (en) * 1974-05-08 1976-03-02 Burgess Industries Incorporated Noise attenuating snubber
EP0074954A1 (en) * 1981-03-20 1983-03-30 Peabody Abc Corp Sound attenuator.
EP0074954A4 (en) * 1981-03-20 1983-08-01 Peabody Abc Corp Sound attenuator.
CN109424390A (en) * 2017-08-30 2019-03-05 湖北福田专用汽车有限公司 Silencing exhaust pipe device

Also Published As

Publication number Publication date
FR1158817A (en) 1958-06-19
GB841828A (en) 1960-07-20

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