WO2008084782A1 - Pulsation absorbing device and muffler - Google Patents

Pulsation absorbing device and muffler Download PDF

Info

Publication number
WO2008084782A1
WO2008084782A1 PCT/JP2008/050066 JP2008050066W WO2008084782A1 WO 2008084782 A1 WO2008084782 A1 WO 2008084782A1 JP 2008050066 W JP2008050066 W JP 2008050066W WO 2008084782 A1 WO2008084782 A1 WO 2008084782A1
Authority
WO
WIPO (PCT)
Prior art keywords
noise reducing
pulsation
reducing device
conduit
absorbing device
Prior art date
Application number
PCT/JP2008/050066
Other languages
French (fr)
Japanese (ja)
Inventor
Youhei Toyoshima
Takashi Yoda
Niichi Chiba
Original Assignee
Calsonic Kansei Corporation
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
Priority claimed from JP2007004871A external-priority patent/JP2008169780A/en
Priority claimed from JP2007079007A external-priority patent/JP2008240555A/en
Application filed by Calsonic Kansei Corporation filed Critical Calsonic Kansei Corporation
Publication of WO2008084782A1 publication Critical patent/WO2008084782A1/en

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
    • F16L55/02—Energy absorbers; Noise absorbers
    • F16L55/033—Noise absorbers
    • 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
    • F01N1/08—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
    • F01N1/16—Silencing apparatus characterised by method of silencing by using movable parts
    • F01N1/20—Silencing apparatus characterised by method of silencing by using movable parts having oscillating or vibrating movement
    • 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
    • F01N1/16—Silencing apparatus characterised by method of silencing by using movable parts
    • F01N1/22—Silencing apparatus characterised by method of silencing by using movable parts the parts being resilient walls
    • 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 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
    • F01N2490/00—Structure, disposition or shape of gas-chambers
    • F01N2490/02—Two or more expansion chambers in series connected by means of tubes

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Pipe Accessories (AREA)

Abstract

A pulsation absorbing device having a noise reducing device (2) provided in a conduit (6), the noise reducing device (2) damping pulsation caused by fluid flowing in a conduit (1), wherein the pulsation absorbing device satisfies the relationship of Fb < Fp, with Fb the resonance frequency of the noise reducing device (2), Fp the frequency of the pulsation. The noise reducing device (2) has a vibration plate (3) sliding, by receiving the pressure of gas flowing in the conduit (1), in the direction substantially perpendicular the direction in which the gas flows, an elastic member (4) for pushing back the vibration plate (3), subjected to the pressure, in the direction opposite the direction in which the pressure is applied, and a casing (5) for preventing radiation of sound absorbed by the vibration plate (3) and the elastic member (4).
PCT/JP2008/050066 2007-01-12 2008-01-08 Pulsation absorbing device and muffler WO2008084782A1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP2007-004871 2007-01-12
JP2007004871A JP2008169780A (en) 2007-01-12 2007-01-12 Muffler
JP2007079007A JP2008240555A (en) 2007-03-26 2007-03-26 Pulsation absorbing device
JP2007-079007 2007-03-26

Publications (1)

Publication Number Publication Date
WO2008084782A1 true WO2008084782A1 (en) 2008-07-17

Family

ID=39608671

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2008/050066 WO2008084782A1 (en) 2007-01-12 2008-01-08 Pulsation absorbing device and muffler

Country Status (1)

Country Link
WO (1) WO2008084782A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107939567A (en) * 2017-12-12 2018-04-20 沈阳航天三菱汽车发动机制造有限公司 A kind of supercharging turbine of automobile engine muffler
JP2020139990A (en) * 2019-02-26 2020-09-03 三菱重工業株式会社 Acoustic damper, combustor and gas turbine

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5956312U (en) * 1982-10-06 1984-04-12 トヨタ自動車株式会社 side branch type silencer
JPS634298A (en) * 1986-06-24 1988-01-09 松下電工株式会社 Silencer
JPH07175485A (en) * 1993-12-21 1995-07-14 Nissan Motor Co Ltd Structure of sound shielding wall
JP2000065280A (en) * 1998-08-12 2000-03-03 Kiyoshi Tanaka Water pressure stabilizer

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5956312U (en) * 1982-10-06 1984-04-12 トヨタ自動車株式会社 side branch type silencer
JPS634298A (en) * 1986-06-24 1988-01-09 松下電工株式会社 Silencer
JPH07175485A (en) * 1993-12-21 1995-07-14 Nissan Motor Co Ltd Structure of sound shielding wall
JP2000065280A (en) * 1998-08-12 2000-03-03 Kiyoshi Tanaka Water pressure stabilizer

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107939567A (en) * 2017-12-12 2018-04-20 沈阳航天三菱汽车发动机制造有限公司 A kind of supercharging turbine of automobile engine muffler
JP2020139990A (en) * 2019-02-26 2020-09-03 三菱重工業株式会社 Acoustic damper, combustor and gas turbine
JP7223598B2 (en) 2019-02-26 2023-02-16 三菱重工業株式会社 Acoustic dampers, combustors and gas turbines

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