US2139151A - Silencer construction - Google Patents

Silencer construction Download PDF

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Publication number
US2139151A
US2139151A US69101A US6910136A US2139151A US 2139151 A US2139151 A US 2139151A US 69101 A US69101 A US 69101A US 6910136 A US6910136 A US 6910136A US 2139151 A US2139151 A US 2139151A
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United States
Prior art keywords
tube
silencer
innermost
space
construction
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Expired - Lifetime
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US69101A
Inventor
Floyd E Deremer
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Individual
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Individual
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Publication date
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Priority to US69101A priority Critical patent/US2139151A/en
Application granted granted Critical
Publication of US2139151A publication Critical patent/US2139151A/en
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Expired - Lifetime legal-status Critical Current

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    • 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 exhaust gas flow passages
    • F01N1/006—Silencing apparatus characterised by method of silencing by using dead chambers communicating with exhaust gas flow passages comprising at least one perforated tube extending from inlet to outlet of the silencer
    • 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
    • F01N2490/00—Structure, disposition or shape of gas-chambers
    • F01N2490/15—Plurality of resonance or dead 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
    • 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 silencer herein disclosed comprises an outtions. er casing it closed by end headers lll2 con-
  • the silencer construction herein disclosed is nected by an innermost tube 14 having a plucharacterized by its beingathrough-passage type rality of perforations on its surface, many of 5 of silencer composed of three nested shells or which serve to communicate the interior of the tubes, the outer one of which ferms a casing, innermost tube with chambers l5 formed in the the innermost one of which forms the gas pasannular space between the innermost tube and sage tube, and the intermediate one of which an intermediate tube 16, which chambers are deforms an annular wall for high frequency sound fined by transverse diaphragms 11.
  • Fig. 1 is an elevational section of a silencer of the invention

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

Description

Dec. 6,' 1938.
F. E. DEREMER SILENCER CONSTRUCTION Filed March 16, 1936 (f lNgENTORi j 1 ATTORNEY.
Patented Dec. 6, 1938 UNITED STATES OFFIQE SILENCER CONSTRUCTION Floyd E. Deremer, Detroit, Mich.
Application March 16, 1936, Serial No. 69,101
1 Claim. (Cl. 18148) This application relates to silencer construe The silencer herein disclosed comprises an outtions. er casing it closed by end headers lll2 con- The silencer construction herein disclosed is nected by an innermost tube 14 having a plucharacterized by its beingathrough-passage type rality of perforations on its surface, many of 5 of silencer composed of three nested shells or which serve to communicate the interior of the tubes, the outer one of which ferms a casing, innermost tube with chambers l5 formed in the the innermost one of which forms the gas pasannular space between the innermost tube and sage tube, and the intermediate one of which an intermediate tube 16, which chambers are deforms an annular wall for high frequency sound fined by transverse diaphragms 11.
Wave attenuation chambers disposed in the an- It will be observed that the end of the inter- 1O nular space between the innermost tube and the mediate tube l6 adjacent the inlet end header intermediate tube, such space being compart- II is longitudinally spaced from such header to mented into attenuation chambers by transprovide a clear portion of the innermost tube, verse annular diaphragms. The silencer herewith the result that the perforations in such clear in disclosed is further characterized by the fact portion communicate the interior of the inner- 15 that the intermediate tube terminates short of most tube directly With the space surrounding the inlet end header of the silencer so that perthe intermediate tube. forations in the innermost tube between such Now having described the silencer construcend header and the adjacent end of the intertion herein indicated, reference will be had to mediate tube communicate the interior of the the claim which follows for a determination of 20 innermost tube directly with the space around the monopoly sought to be obtained herein. the intermediate tube. This feature contrasts the I claim: construction herein disclosed from the COllSlJlllC- In a silencer, an outer casing having end headtion disclosed in Fig. 6 of the Oldberg patent, ers, an inner tube passing through the headers 0- of September 1932, and in h and the interior of the silencer, an intermediate 25 o p t 1,933,973, 0f ce be tube surrounding only that part of the inlet 1933, where, because the intermediate tube eX tube remote from the headers, transverse diatends di ectly to the inlet end header, communiphragins in the annular space between the tubes cation from the inlet end of the innermost tube, dividing such space into annular chambers, the to the space surrounding the intermediate tube, inner tube having perforations therein between 30 must be established through openings of the inthe header and each end of the intermediate termediate tube. tube directly communicating the interior of the The Silencer he ein d closed m y be best uninner tube with the space surrounding the indelstood p reference to the app d W- termediate tube, and also having perforations ing. In this drawing, opening into the annular chambers. 35
Fig. 1 is an elevational section of a silencer of the invention; FLOYD E. DEREMER.
US69101A 1936-03-16 1936-03-16 Silencer construction Expired - Lifetime US2139151A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US69101A US2139151A (en) 1936-03-16 1936-03-16 Silencer construction

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US69101A US2139151A (en) 1936-03-16 1936-03-16 Silencer construction

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US2139151A true US2139151A (en) 1938-12-06

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3212603A (en) * 1963-10-24 1965-10-19 Walker Mfg Co Muffler with tuned silencing chambers
US3353627A (en) * 1965-02-16 1967-11-21 Walker Mfg Co Muffler with concentric tubes forming helmholtz chambers
EP1371824A1 (en) * 2002-06-11 2003-12-17 Siemens Aktiengesellschaft Device for purifying exhaust gas of a combustion system
US20040262077A1 (en) * 2003-05-02 2004-12-30 Huff Norman T. Mufflers with enhanced acoustic performance at low and moderate frequencies
EP1798390A3 (en) * 2005-12-15 2007-07-04 Friedrich Boysen GmbH & Co. KG Engine exhaust apparatus
US20090014238A1 (en) * 2007-07-10 2009-01-15 Huff Ronald G Muffler
US20100270103A1 (en) * 2007-07-10 2010-10-28 Tmg Performance Products, Llc Exhaust muffler

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3212603A (en) * 1963-10-24 1965-10-19 Walker Mfg Co Muffler with tuned silencing chambers
US3353627A (en) * 1965-02-16 1967-11-21 Walker Mfg Co Muffler with concentric tubes forming helmholtz chambers
EP1371824A1 (en) * 2002-06-11 2003-12-17 Siemens Aktiengesellschaft Device for purifying exhaust gas of a combustion system
US20040262077A1 (en) * 2003-05-02 2004-12-30 Huff Norman T. Mufflers with enhanced acoustic performance at low and moderate frequencies
US7281605B2 (en) * 2003-05-02 2007-10-16 Owens-Corning Fiberglas Technology Ii, Llc Mufflers with enhanced acoustic performance at low and moderate frequencies
EP1798390A3 (en) * 2005-12-15 2007-07-04 Friedrich Boysen GmbH & Co. KG Engine exhaust apparatus
EP1798390B2 (en) † 2005-12-15 2014-11-12 Friedrich Boysen GmbH & Co. KG Engine exhaust apparatus
US20090014238A1 (en) * 2007-07-10 2009-01-15 Huff Ronald G Muffler
US20090014237A1 (en) * 2007-07-10 2009-01-15 Keith Skowronski Muffler
US7798286B2 (en) * 2007-07-10 2010-09-21 Tmg Performance Products, Llc Exhaust muffler having a horizontally extending sound attenuation chamber
US20100270103A1 (en) * 2007-07-10 2010-10-28 Tmg Performance Products, Llc Exhaust muffler
US7942239B2 (en) 2007-07-10 2011-05-17 Tmg Performance Products, Llc Exhaust muffler

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