GB2243187B - A sound attenuator - Google Patents

A sound attenuator

Info

Publication number
GB2243187B
GB2243187B GB9006468A GB9006468A GB2243187B GB 2243187 B GB2243187 B GB 2243187B GB 9006468 A GB9006468 A GB 9006468A GB 9006468 A GB9006468 A GB 9006468A GB 2243187 B GB2243187 B GB 2243187B
Authority
GB
United Kingdom
Prior art keywords
sound attenuator
attenuator
sound
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Fee Related
Application number
GB9006468A
Other versions
GB9006468D0 (en
GB2243187A (en
Inventor
Alan Cummings
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
University of Hull
Original Assignee
University of Hull
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 University of Hull filed Critical University of Hull
Priority to GB9006468A priority Critical patent/GB2243187B/en
Publication of GB9006468D0 publication Critical patent/GB9006468D0/en
Publication of GB2243187A publication Critical patent/GB2243187A/en
Application granted granted Critical
Publication of GB2243187B publication Critical patent/GB2243187B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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
    • F01N1/003—Silencing apparatus characterised by method of silencing by using dead chambers communicating with gas flow passages
    • F01N1/006—Silencing apparatus characterised by method of silencing by using dead chambers communicating with 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
    • 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
    • F01N1/00—Silencing apparatus characterised by method of silencing
    • F01N1/02—Silencing apparatus characterised by method of silencing by using resonance
    • F01N1/04—Silencing apparatus characterised by method of silencing by using resonance having sound-absorbing materials in resonance 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
    • 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
    • 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
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/172—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using resonance effects
    • 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)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)
GB9006468A 1990-03-22 1990-03-22 A sound attenuator Expired - Fee Related GB2243187B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9006468A GB2243187B (en) 1990-03-22 1990-03-22 A sound attenuator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9006468A GB2243187B (en) 1990-03-22 1990-03-22 A sound attenuator

Publications (3)

Publication Number Publication Date
GB9006468D0 GB9006468D0 (en) 1990-05-23
GB2243187A GB2243187A (en) 1991-10-23
GB2243187B true GB2243187B (en) 1994-05-25

Family

ID=10673085

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9006468A Expired - Fee Related GB2243187B (en) 1990-03-22 1990-03-22 A sound attenuator

Country Status (1)

Country Link
GB (1) GB2243187B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0724110A1 (en) * 1995-01-24 1996-07-31 FILTERWERK MANN & HUMMEL GMBH Noise damping pipe
FI122523B (en) 2008-04-30 2012-03-15 Metso Paper Inc Low-frequency silencer, a method for manufacturing a low-frequency silencer, and a system for low-frequency silencers, for example, in air-conditioning ducts for paper mills

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB495755A (en) * 1937-03-16 1938-11-16 Abram Rupert Neelands Silencing equipment for air, heating, ventilating, and exhaust ducts, tunnels or the like, and sound treatment for rooms
GB496093A (en) * 1938-05-21 1938-11-24 Francois Cementation Co Ltd Improvements in apparatus for suppressing or reducing the propagation of sound in air
GB590540A (en) * 1943-06-08 1947-07-21 Arthur John King Improvements in sound-absorbent structures
GB614404A (en) * 1945-08-27 1948-12-15 Cementation Co Ltd Improvements in or relating to means for reducing the sound effect of the passage of air or other gases through conduits
GB2121475A (en) * 1982-05-12 1983-12-21 Messerschmitt Boelkow Blohm Element having resonators for silencing gaseous flow
GB2121911A (en) * 1982-05-12 1984-01-04 Messerschmitt Boelkow Blohm A sound-damping element having resonators
GB2170861A (en) * 1985-02-08 1986-08-13 Colchester Woods Air duct silencer splitter

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB495755A (en) * 1937-03-16 1938-11-16 Abram Rupert Neelands Silencing equipment for air, heating, ventilating, and exhaust ducts, tunnels or the like, and sound treatment for rooms
GB496093A (en) * 1938-05-21 1938-11-24 Francois Cementation Co Ltd Improvements in apparatus for suppressing or reducing the propagation of sound in air
GB590540A (en) * 1943-06-08 1947-07-21 Arthur John King Improvements in sound-absorbent structures
GB614404A (en) * 1945-08-27 1948-12-15 Cementation Co Ltd Improvements in or relating to means for reducing the sound effect of the passage of air or other gases through conduits
GB2121475A (en) * 1982-05-12 1983-12-21 Messerschmitt Boelkow Blohm Element having resonators for silencing gaseous flow
GB2121911A (en) * 1982-05-12 1984-01-04 Messerschmitt Boelkow Blohm A sound-damping element having resonators
GB2170861A (en) * 1985-02-08 1986-08-13 Colchester Woods Air duct silencer splitter

Also Published As

Publication number Publication date
GB9006468D0 (en) 1990-05-23
GB2243187A (en) 1991-10-23

Similar Documents

Publication Publication Date Title
AU7232191A (en) A parking-aid device
AU113313S (en) A cookpot
EP0473095A3 (en) Hybrid sound attenuator
EP0412315A3 (en) Sound attenuator
AU117977S (en) A loudspeaker
GB9002433D0 (en) Transducers
GB2246015B (en) A voice transducer
GB9123291D0 (en) A loudspeaker
GB2299156B (en) A dearmer
GB2243187B (en) A sound attenuator
GB2248997B (en) Sound output device
GB9025029D0 (en) Loudspeaker
AU9089091A (en) Acoustic device
GB2249179B (en) Transducers
GB2275149B (en) A voice transducer
GB9015552D0 (en) Transducers
GB9004763D0 (en) Transducer
AU119091S (en) A microphone
AU112161S (en) A section
AU7104291A (en) A trap
AU115757S (en) A loudspeaker
GB9024165D0 (en) A sound simulation device
GB2242802B (en) A de-multiplexer
GB9001927D0 (en) Transducers
GB9012211D0 (en) A subwoofeer loudspeaker unit

Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20030322