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CH573045A5 - Tubular exhaust gas noise silencer - has concentric tubes with resonator chamber and perforated inner tube - Google Patents

Tubular exhaust gas noise silencer - has concentric tubes with resonator chamber and perforated inner tube

Info

Publication number
CH573045A5
CH573045A5 CH777774A CH777774A CH573045A5 CH 573045 A5 CH573045 A5 CH 573045A5 CH 777774 A CH777774 A CH 777774A CH 777774 A CH777774 A CH 777774A CH 573045 A5 CH573045 A5 CH 573045A5
Authority
CH
Switzerland
Prior art keywords
inner tube
tube
exhaust gas
concentric tubes
resonator chamber
Prior art date
Application number
CH777774A
Original Assignee
Eberspaecher J Fa
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 Eberspaecher J Fa filed Critical Eberspaecher J Fa
Priority to CH777774A priority Critical patent/CH573045A5/en
Publication of CH573045A5 publication Critical patent/CH573045A5/en

Links

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
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features
    • F01N13/18—Construction facilitating manufacture, assembly, or disassembly
    • 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
    • F01N1/026—Annular resonance chambers arranged concentrically to an exhaust passage and communicating with it, e.g. via at least one opening in the exhaust passage
    • 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
    • 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
    • F01N13/1888—Construction facilitating manufacture, assembly, or disassembly the housing of the assembly consisting of two or more parts, e.g. two half-shells
    • 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
    • F01N2450/00—Methods or apparatus for fitting, inserting or repairing different elements
    • F01N2450/22—Methods or apparatus for fitting, inserting or repairing different elements by welding or brazing
    • 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
    • F01N2470/00—Structure or shape of exhaust gas passages, pipes or tubes
    • F01N2470/02—Tubes being perforated
    • 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
    • F01N2470/00—Structure or shape of exhaust gas passages, pipes or tubes
    • F01N2470/24—Concentric tubes or tubes being concentric to housing, e.g. telescopically assembled
    • 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

Landscapes

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

Abstract

The exhaust gas outlet noise damper has an outer tube enclosing a concentric perforated tube. This silencer is designed for noise suppression over a wide range of frequencies with maximum back pressure reduction. The inner tube (1) has at its midsection (2) a closing partition wall (4). The inner tube diameter is greater downstream of the partition wall and both tube sections are perforated with holes (5, 6). The inner tube is enclosed over its whole length by a cylindrical chamber whose outside wall is formed by the outside tube. The change in the chamber dimensions ensures good acoustic coupling and the narrower chamber acts as a suction resonator at low back pressure.
CH777774A 1974-06-07 1974-06-07 Tubular exhaust gas noise silencer - has concentric tubes with resonator chamber and perforated inner tube CH573045A5 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CH777774A CH573045A5 (en) 1974-06-07 1974-06-07 Tubular exhaust gas noise silencer - has concentric tubes with resonator chamber and perforated inner tube

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH777774A CH573045A5 (en) 1974-06-07 1974-06-07 Tubular exhaust gas noise silencer - has concentric tubes with resonator chamber and perforated inner tube

Publications (1)

Publication Number Publication Date
CH573045A5 true CH573045A5 (en) 1976-02-27

Family

ID=4330301

Family Applications (1)

Application Number Title Priority Date Filing Date
CH777774A CH573045A5 (en) 1974-06-07 1974-06-07 Tubular exhaust gas noise silencer - has concentric tubes with resonator chamber and perforated inner tube

Country Status (1)

Country Link
CH (1) CH573045A5 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9925655B2 (en) * 2014-04-07 2018-03-27 Exhaust Technologies, Inc. Muffler for pneumatic power tool and pneumatic power tool incorporating the same

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9925655B2 (en) * 2014-04-07 2018-03-27 Exhaust Technologies, Inc. Muffler for pneumatic power tool and pneumatic power tool incorporating the same

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Legal Events

Date Code Title Description
PL Patent ceased
PL Patent ceased