SE0401313L - Perforated sound attenuating structure - Google Patents

Perforated sound attenuating structure

Info

Publication number
SE0401313L
SE0401313L SE0401313A SE0401313A SE0401313L SE 0401313 L SE0401313 L SE 0401313L SE 0401313 A SE0401313 A SE 0401313A SE 0401313 A SE0401313 A SE 0401313A SE 0401313 L SE0401313 L SE 0401313L
Authority
SE
Sweden
Prior art keywords
sound attenuating
attenuating structure
perforated sound
perforated
axial direction
Prior art date
Application number
SE0401313A
Other languages
Swedish (sv)
Other versions
SE525807C2 (en
SE0401313D0 (en
Inventor
Hideo Utsuno
Zenzo Yamaguchi
Kazuki Tsugihashi
Kazyo Komura
Yasumasa Kimura
Koichi Honke
Original Assignee
Kobe Steel Ltd Kabushiki Kaish
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 Kobe Steel Ltd Kabushiki Kaish filed Critical Kobe Steel Ltd Kabushiki Kaish
Publication of SE0401313D0 publication Critical patent/SE0401313D0/en
Publication of SE0401313L publication Critical patent/SE0401313L/en
Publication of SE525807C2 publication Critical patent/SE525807C2/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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Exhaust Silencers (AREA)
  • Pipe Accessories (AREA)
  • Vehicle Interior And Exterior Ornaments, Soundproofing, And Insulation (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)

Abstract

The holes (46,46') are formed between each perforated panel (42,42') at the flow path side. The perforated panels are extended to the axial direction of a cylindrical piping path (41). The partition plate (43,43') divides the axial direction of the piping path into number of closets (44,44').
SE0401313A 2003-05-23 2004-05-24 Noise reduction structure for air supply piping, has holes which are formed between each perforated panel at flow path side SE525807C2 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2003146579 2003-05-23

Publications (3)

Publication Number Publication Date
SE0401313D0 SE0401313D0 (en) 2004-05-24
SE0401313L true SE0401313L (en) 2004-11-24
SE525807C2 SE525807C2 (en) 2005-05-03

Family

ID=32588733

Family Applications (1)

Application Number Title Priority Date Filing Date
SE0401313A SE525807C2 (en) 2003-05-23 2004-05-24 Noise reduction structure for air supply piping, has holes which are formed between each perforated panel at flow path side

Country Status (2)

Country Link
CN (1) CN1311186C (en)
SE (1) SE525807C2 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI392838B (en) * 2010-06-10 2013-04-11 Univ Nat Taiwan Normal Whistle box structure
CN102996302B (en) * 2012-08-11 2016-01-27 郭荣 A kind of silencing apparatus simultaneously can eliminating wide band and narrow frequency band noise
JP6629627B2 (en) * 2016-02-22 2020-01-15 三菱重工業株式会社 Noise reduction structure and supercharging device
US10208880B2 (en) * 2016-12-30 2019-02-19 Emerson Process Management Regulator Technologies, Inc. Noise attenuators for use with process control devices
JP2021018357A (en) * 2019-07-22 2021-02-15 株式会社デンソー Sound absorption device

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2093003U (en) * 1991-05-10 1992-01-15 刘余厚 Liquid ultraviolet treatment device
JP3026694B2 (en) * 1993-04-19 2000-03-27 河西工業株式会社 Soundproofing materials for vehicles
JPH0849521A (en) * 1994-08-08 1996-02-20 Hino Motors Ltd Muffler
CN2407133Y (en) * 2000-01-25 2000-11-22 中国科学院声学研究所 Tubular perforated plate sound absorption construction
CN2494914Y (en) * 2000-09-15 2002-06-12 上海众汇泡沫铝材有限公司 Foam aluminium sheet type noise absorber
CN2444295Y (en) * 2000-09-20 2001-08-22 上海博旭复合装饰材料有限公司 Combined sound absorption board
JP2003050586A (en) * 2000-09-29 2003-02-21 Kobe Steel Ltd Porous soundproof structure and method of manufacturing the same

Also Published As

Publication number Publication date
CN1311186C (en) 2007-04-18
SE525807C2 (en) 2005-05-03
CN1573199A (en) 2005-02-02
SE0401313D0 (en) 2004-05-24

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Legal Events

Date Code Title Description
NUG Patent has lapsed