FR2523658B1 - Turbomachine a faible niveau de bruit - Google Patents

Turbomachine a faible niveau de bruit

Info

Publication number
FR2523658B1
FR2523658B1 FR8304312A FR8304312A FR2523658B1 FR 2523658 B1 FR2523658 B1 FR 2523658B1 FR 8304312 A FR8304312 A FR 8304312A FR 8304312 A FR8304312 A FR 8304312A FR 2523658 B1 FR2523658 B1 FR 2523658B1
Authority
FR
France
Prior art keywords
turbomachine
low noise
noise
low
noise turbomachine
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
Application number
FR8304312A
Other languages
English (en)
Other versions
FR2523658A1 (fr
Inventor
Wolfgang Neise
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.)
Deutsches Zentrum fuer Luft und Raumfahrt eV
Original Assignee
Deutsche Forschungs und Versuchsanstalt fuer Luft und Raumfahrt eV DFVLR
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 Deutsche Forschungs und Versuchsanstalt fuer Luft und Raumfahrt eV DFVLR filed Critical Deutsche Forschungs und Versuchsanstalt fuer Luft und Raumfahrt eV DFVLR
Publication of FR2523658A1 publication Critical patent/FR2523658A1/fr
Application granted granted Critical
Publication of FR2523658B1 publication Critical patent/FR2523658B1/fr
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
    • F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
    • F04D29/663—Sound attenuation
    • F04D29/665—Sound attenuation by means of resonance chambers or interference
    • 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
    • G10K11/175—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound
    • G10K11/178—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase
    • G10K11/1785—Methods, e.g. algorithms; Devices
    • G10K11/17857—Geometric disposition, e.g. placement of microphones
    • 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
    • G10K11/175—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound
    • G10K11/178—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase
    • G10K11/1787—General system configurations
    • G10K11/17873—General system configurations using a reference signal without an error signal, e.g. pure feedforward
    • 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
    • G10K11/175—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound
    • G10K11/178—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase
    • G10K11/1787—General system configurations
    • G10K11/17875—General system configurations using an error signal without a reference signal, e.g. pure feedback
    • 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
    • G10K2210/00—Details of active noise control [ANC] covered by G10K11/178 but not provided for in any of its subgroups
    • G10K2210/10—Applications
    • G10K2210/109—Compressors, e.g. fans
    • 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
    • G10K2210/00—Details of active noise control [ANC] covered by G10K11/178 but not provided for in any of its subgroups
    • G10K2210/10—Applications
    • G10K2210/121—Rotating machines, e.g. engines, turbines, motors; Periodic or quasi-periodic signals in general
    • 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
    • G10K2210/00—Details of active noise control [ANC] covered by G10K11/178 but not provided for in any of its subgroups
    • G10K2210/30—Means
    • G10K2210/321—Physical
    • G10K2210/3212—Actuator details, e.g. composition or microstructure
    • G10K2210/32121—Fluid amplifiers, e.g. modulated gas flow speaker using electrovalves
    • 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
    • G10K2210/00—Details of active noise control [ANC] covered by G10K11/178 but not provided for in any of its subgroups
    • G10K2210/30—Means
    • G10K2210/321—Physical
    • G10K2210/3216—Cancellation means disposed in the vicinity of the source
FR8304312A 1982-03-17 1983-03-16 Turbomachine a faible niveau de bruit Expired FR2523658B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE3209617A DE3209617C2 (de) 1982-03-17 1982-03-17 Geräuscharme Turboarbeitsmaschine

Publications (2)

Publication Number Publication Date
FR2523658A1 FR2523658A1 (fr) 1983-09-23
FR2523658B1 true FR2523658B1 (fr) 1988-06-03

Family

ID=6158445

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8304312A Expired FR2523658B1 (fr) 1982-03-17 1983-03-16 Turbomachine a faible niveau de bruit

Country Status (4)

Country Link
JP (1) JPS59600A (fr)
DE (1) DE3209617C2 (fr)
FR (1) FR2523658B1 (fr)
GB (1) GB2117046B (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8329218D0 (en) * 1983-11-02 1983-12-07 Ffowcs Williams J E Reheat combustion system for gas turbine engine
AT387045B (de) * 1985-06-29 1988-11-25 Voith Gmbh J M Einrichtung zur daempfung von schwingungen in aufbereitungssystemen fuer stoffsuspensionen, insbesondere papierfaserstoffsuspensionen
US5233137A (en) * 1990-04-25 1993-08-03 Ford Motor Company Protective anc loudspeaker membrane
EP0594626A4 (en) * 1991-07-16 1995-08-23 Noise Cancellation Tech High efficiency fan with adaptive noise cancellation
SE500489C2 (sv) * 1992-11-06 1994-07-04 Flaekt Ab Tilluftsdon för ventilationsluft i fartyg
DE4408278A1 (de) * 1994-03-11 1995-09-14 Gaggenau Werke Dunstabzugshaube mit wenigstens teilweiser Auslöschung des Lüftergeräusches

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2225398A (en) * 1939-09-13 1940-12-17 Clyde M Hamblin Construction of ventilating fans
US3826870A (en) * 1970-03-20 1974-07-30 Quest Electronics Corp Noise cancellation
GB1456018A (en) * 1972-11-24 1976-11-17 Nat Res Dev Active control of sound waves
US4174020A (en) * 1975-07-01 1979-11-13 Challis Louis A Acoustic treatment for fans
GB1577322A (en) * 1976-05-13 1980-10-22 Bearcroft R Active attenuation of recurring vibrations
FR2370170A1 (fr) * 1976-11-05 1978-06-02 Snecma Procede et dispositif pour la diminution du bruit des turbomachines
JPS545402A (en) * 1977-06-14 1979-01-16 Jinichi Nishiwaki Low frequency silencer
WO1981003201A1 (fr) * 1980-04-28 1981-11-12 G Koopmann Systeme de reduction du bruit
ZA824145B (en) * 1981-06-12 1983-04-27 Sound Attenuators Ltd Method and apparatus for reducing repetitive noise entering the ear

Also Published As

Publication number Publication date
GB2117046B (en) 1985-07-10
GB2117046A (en) 1983-10-05
FR2523658A1 (fr) 1983-09-23
JPS59600A (ja) 1984-01-05
GB8306542D0 (en) 1983-04-13
DE3209617C2 (de) 1985-10-10
DE3209617A1 (de) 1983-10-06

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Legal Events

Date Code Title Description
ST Notification of lapse