FI905780A0 - Absorptiivinen äänenvaimennin, etenkin paperitehtaiden ilmakanaviin - Google Patents

Absorptiivinen äänenvaimennin, etenkin paperitehtaiden ilmakanaviin

Info

Publication number
FI905780A0
FI905780A0 FI905780A FI905780A FI905780A0 FI 905780 A0 FI905780 A0 FI 905780A0 FI 905780 A FI905780 A FI 905780A FI 905780 A FI905780 A FI 905780A FI 905780 A0 FI905780 A0 FI 905780A0
Authority
FI
Finland
Prior art keywords
mills
inner tube
sound
air duct
muffler
Prior art date
Application number
FI905780A
Other languages
English (en)
Swedish (sv)
Other versions
FI905780A (fi
FI91995B (fi
FI91995C (fi
Inventor
Henrik Pettersson
Markku Lemetyinen
Esko Sjoestrand
Original Assignee
Valmet Paper Machinery Inc
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 Valmet Paper Machinery Inc filed Critical Valmet Paper Machinery Inc
Priority to FI905780A priority Critical patent/FI91995C/fi
Publication of FI905780A0 publication Critical patent/FI905780A0/fi
Priority to CA002055915A priority patent/CA2055915C/en
Priority to EP91850288A priority patent/EP0487481B1/en
Priority to DE91850288T priority patent/DE69100308T2/de
Priority to AT91850288T priority patent/ATE93601T1/de
Priority to US07/795,972 priority patent/US5260523A/en
Publication of FI905780A publication Critical patent/FI905780A/fi
Publication of FI91995B publication Critical patent/FI91995B/fi
Application granted granted Critical
Publication of FI91995C publication Critical patent/FI91995C/fi

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
    • F16L55/027—Throttle passages
    • 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
    • F16L55/027—Throttle passages
    • F16L55/02754—Throttle passages using a central core throttling the passage
    • 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
    • F16L55/0336—Noise absorbers by means of sound-absorbing materials
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/24—Means for preventing or suppressing noise
    • F24F2013/245—Means for preventing or suppressing noise using resonance

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)
  • Exhaust Silencers (AREA)
  • Absorbent Articles And Supports Therefor (AREA)
  • Paper (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)
  • Duct Arrangements (AREA)
  • Building Environments (AREA)
FI905780A 1990-11-20 1990-11-20 Absorptiivinen äänenvaimennin, etenkin paperitehtaiden ilmakanaviin FI91995C (fi)

Priority Applications (6)

Application Number Priority Date Filing Date Title
FI905780A FI91995C (fi) 1990-11-20 1990-11-20 Absorptiivinen äänenvaimennin, etenkin paperitehtaiden ilmakanaviin
CA002055915A CA2055915C (en) 1990-11-20 1991-11-20 Absorptive sound attenuator, in particular for air ducts in paper mills
EP91850288A EP0487481B1 (en) 1990-11-20 1991-11-21 Absorptive sound attenuator, in particular for air ducts in paper mills
DE91850288T DE69100308T2 (de) 1990-11-20 1991-11-21 Absorbierender Schalldämpfer, insbesondere für Luftkanäle von Papierfabriken.
AT91850288T ATE93601T1 (de) 1990-11-20 1991-11-21 Absorbierender schalldaempfer, insbesondere fuer luftkanaele von papierfabriken.
US07/795,972 US5260523A (en) 1990-11-20 1991-11-22 Absorptive sound attenuator, in particular for air ducts in paper mills

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI905780A FI91995C (fi) 1990-11-20 1990-11-20 Absorptiivinen äänenvaimennin, etenkin paperitehtaiden ilmakanaviin
FI905780 1990-11-22

Publications (4)

Publication Number Publication Date
FI905780A0 true FI905780A0 (fi) 1990-11-22
FI905780A FI905780A (fi) 1992-05-23
FI91995B FI91995B (fi) 1994-05-31
FI91995C FI91995C (fi) 1994-09-12

Family

ID=8531449

Family Applications (1)

Application Number Title Priority Date Filing Date
FI905780A FI91995C (fi) 1990-11-20 1990-11-20 Absorptiivinen äänenvaimennin, etenkin paperitehtaiden ilmakanaviin

Country Status (6)

Country Link
US (1) US5260523A (fi)
EP (1) EP0487481B1 (fi)
AT (1) ATE93601T1 (fi)
CA (1) CA2055915C (fi)
DE (1) DE69100308T2 (fi)
FI (1) FI91995C (fi)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6062270A (en) * 1997-01-27 2000-05-16 Lindab Ab Double-walled structure in a ventilation duct system
US6112850A (en) * 1999-09-07 2000-09-05 Met Pro Corporation Acoustic silencer nozzle
US6543575B1 (en) 2000-06-14 2003-04-08 Lindab Ab Double-walled structure and connection arrangement
US7194769B2 (en) * 2003-12-11 2007-03-20 Massachusetts Institute Of Technology Network security planning architecture
DE102004001958A1 (de) * 2004-01-13 2005-08-11 Alstom Technology Ltd Lufttechnische Einrichtung
CA2491817C (en) * 2005-01-06 2007-03-27 J.P. Environmental Products Inc. Noise attenuator with laterally moving baffles
WO2007143226A2 (en) 2006-06-09 2007-12-13 Massachusetts Institute Of Technology Generating a multiple-prerequisite attack graph
FI122523B (fi) 2008-04-30 2012-03-15 Metso Paper Inc Matalien taajuksien äänenvaimennin, menetelmä matalien taajuuksien äänenvaimentimen valmistamiseksi ja järjestelmä matalien taajuuksien vaimentamiseksi esimerkiksi paperitehtaiden ilmastointikanavissa
US9581353B2 (en) * 2009-01-23 2017-02-28 Valeo Climate Control Corporation HVAC system including a noise-reducing feature
FI124494B (fi) * 2010-05-12 2014-09-30 Jeven Oy Vaimennusosa ilmanvaihtokanavan äänenvaimenninta varten ja ilmanvaihtokanavan äänenvaimennin
FI20106219A (fi) * 2010-11-18 2012-05-19 Flaekt Woods Ab Eriste ilmanvaihdon tasauslaatikkoa varten
US8240429B1 (en) * 2011-02-21 2012-08-14 Siemens Industry, Inc. System method and devices for windage noise damping in induction motor
US9121174B1 (en) * 2014-05-23 2015-09-01 Hwa-Yi Ventilation Co., Ltd. Foldable sound attenuator
US20210239353A1 (en) * 2020-02-02 2021-08-05 Johnson Controls Technology Company Electrical enclosure integral with a housing of a terminal unit
EP3936784A1 (en) * 2020-07-07 2022-01-12 Carrier Corporation Coil cleaning easy access

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR853854A (fr) * 1938-11-18 1940-03-30 Ventil Atel Silencieux pour canalisations de ventilation et autres
US3949830A (en) * 1975-06-20 1976-04-13 George Koch Sons, Inc. Fan silencer
US4034826A (en) * 1975-07-18 1977-07-12 H. H. Robertson Company Silencer for ventilation ducts
HU182491B (en) * 1977-04-08 1984-01-30 Fuetoeber Epueletgep Termekek Sound-damping deviceparticularly for reducing noise spreading in air duct
SE450656B (sv) * 1982-05-14 1987-07-13 Bahco Ventilation Ab Ljuddempare for ventilationskanaler eller ventilationsapparater
SE447413B (sv) * 1984-12-11 1986-11-10 Viak Ab Ljuddempare for reducering av kanalburet luftljud
FI860080A (fi) * 1986-01-08 1987-07-09 Halton Oy Kanalelement foer ett ventilationskanalsystem.
GB8808696D0 (en) * 1988-04-13 1988-05-18 Tomac Mining Products Ltd Silencer for gas flow apparatus
GB2218799A (en) * 1988-05-17 1989-11-22 Diffusion Environmental System Sound attenuating ventilator

Also Published As

Publication number Publication date
DE69100308D1 (de) 1993-09-30
EP0487481A1 (en) 1992-05-27
DE69100308T2 (de) 1994-01-13
CA2055915C (en) 1997-03-04
ATE93601T1 (de) 1993-09-15
EP0487481B1 (en) 1993-08-25
FI905780A (fi) 1992-05-23
FI91995B (fi) 1994-05-31
CA2055915A1 (en) 1992-05-21
FI91995C (fi) 1994-09-12
US5260523A (en) 1993-11-09

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Legal Events

Date Code Title Description
BB Publication of examined application
FG Patent granted

Owner name: VALMET PAPER MACHINERY INC