EP0411168B1 - Sirène d'alarme - Google Patents

Sirène d'alarme Download PDF

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Publication number
EP0411168B1
EP0411168B1 EP89114069A EP89114069A EP0411168B1 EP 0411168 B1 EP0411168 B1 EP 0411168B1 EP 89114069 A EP89114069 A EP 89114069A EP 89114069 A EP89114069 A EP 89114069A EP 0411168 B1 EP0411168 B1 EP 0411168B1
Authority
EP
European Patent Office
Prior art keywords
compressed air
motor
alarm siren
siren
line
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 - Lifetime
Application number
EP89114069A
Other languages
German (de)
English (en)
Other versions
EP0411168A1 (fr
Inventor
Rudolf Tinner
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.)
Landert Motoren AG
Original Assignee
Landert Motoren AG
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 Landert Motoren AG filed Critical Landert Motoren AG
Priority to EP89114069A priority Critical patent/EP0411168B1/fr
Priority to AT89114069T priority patent/ATE88593T1/de
Priority to DE8989114069T priority patent/DE58904158D1/de
Publication of EP0411168A1 publication Critical patent/EP0411168A1/fr
Application granted granted Critical
Publication of EP0411168B1 publication Critical patent/EP0411168B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • G10K7/00—Sirens
    • G10K7/06—Sirens in which the sound-producing member is driven by a fluid, e.g. by a compressed gas

Definitions

  • the invention relates to an alarm siren with a sound generator having a radial compressor wheel driven by rotation, which rotates in a stationary ring with openings.
  • Electrically driven alarm sirens with rotating sound generators are characterized by a 360 ° all-round radiation pattern, high acoustic performance, high efficiency, simple construction and robustness. However, they have the disadvantage that they are network-dependent.
  • DE-C 457 347 describes an alarm siren in which a drive motor is also provided, which also has a compressed air source Compressed air reservoir is driven, a cylinder being shifted periodically within its housing for sound generation.
  • the invention is based on the one hand to combine the advantages of electrically driven sirens with rotating sound generator with network independence, the operating mode of the alarm siren should be switchable in a simple manner.
  • the proven rotating sound generator system is thus pneumatically driven, namely via the compressed air source with the compressed air reservoir.
  • the drive is therefore network-independent and the energy can be stored well via the compressed air storage.
  • each branch line can be switched on by a corresponding actuation of the relevant valve, in which case the pressure generated via the pressure regulating valve in question is passed on to the siren.
  • a preferably remote-operated valve e.g. solenoid valve
  • the compressed air source There are several options for the compressed air source. In the case of an already existing compressed air line, one can fall back on this, for example. In general, however, it is preferred if the compressed air source is designed as a compressor. Even in the event of a power failure the alarm siren according to the invention can still be operated because sufficient energy is stored in the compressed air store.
  • An air filter, an oiler and / or a check valve is preferably provided in a compressed air line which connects the compressed air source to the compressed air motor.
  • the air filter keeps particles out of the air that could impair the function of the air motor.
  • the lubricator adds the oil required to operate the air motor to the compressed air.
  • a check valve can ensure that the siren does not brake too quickly in pulse mode, so that there is no vacuum in the supply line to the siren.
  • a silencer can also be connected to the air motor, the main function of which is to separate the oil added to the air, since the noise from the engine is masked by the siren.
  • the compressed air line is designed to be as short as possible, since the time required to fill the line with air must be short compared to the switch-on time in the pulse mode.
  • the cross-section of the line must not be too small to reduce pressure losses.
  • the pressure forwarded to the siren can be adjusted accordingly by switching on the relevant pressure regulating valve in the branch line concerned, which in turn adjusts the pitch.
  • FIG. 1 shows a radial compressor wheel which is driven to rotate by a compressed air motor 2 according to FIG. 3.
  • the radial compressor wheel is seated in an outer ring according to FIG. 2 and an acoustic signal is emitted when the radial compressor wheel is driven.
  • the system with the radial compressor wheel according to FIG. 1 and the associated outer ring according to FIG. 2 is known per se, for example by the alarm siren MSL-6 from the applicant.
  • This siren works so that the Vibrations are caused by periodic interruptions in an air flow.
  • the air flow is drawn in by the radial compressor wheel, which is driven at a speed of, for example, 2900 revolutions per minute.
  • the compressor wheel is equipped with very wide blades or channels in which the air flows.
  • the periodic interruption of the air flow takes place through the arrangement of the stationary ring with a number of openings according to FIG. 2 around the compressor wheel according to FIG.
  • a compressed air motor 2 is provided to drive a siren 1.
  • Compressed air is generated by a compressor 15 and stored in a compressed air container 14 under high pressure (e.g. 200 bar).
  • An air dryer can be installed downstream to ensure operation at low temperatures.
  • Such compressed air supply units are available on the market.
  • An air filter 13 keeps particles out of the air, which can impair the function of the compressed air motor 2.
  • the compressed air for driving the siren 1 is then passed through an oiler 12, which mixes the oil necessary for the operation of the compressed air motor 2 with the air.
  • the compressed air motor In contrast to the electric motor, where the speed decreases only slightly with increasing load, the compressed air motor has a soft torque-speed characteristic. The resulting speed depends directly on the load torque and the air pressure. The speed (or pitch) of the siren with compressed air motor can therefore be controlled with the pressure used.
  • the pressure to reach the correct operating speed (or pitch) is set depending on the operating mode with the pressure regulating valves 10, 11.
  • Solenoid valves 6 and 7, 8 and 9 allow the siren to be switched on remotely.
  • the compressed air motor is supplied with the preselected operating pressure.
  • a check valve 5 ensures that the siren does not brake too quickly in the pulse mode, i.e. the pneumatic motor driven by the flywheel of the siren impeller can suck in air. There is no vacuum in the siren feed line.
  • the compressed air line 4 to the siren must not exceed a certain maximum length, since the time required to fill this line with air must be short compared to the switch-on time in the pulse mode. On the other hand, the cross-section of this line must not be too small to avoid pressure losses.
  • the siren can be controlled by battery-backed electronics. For interval operation, this must be the valve coil of the Control solenoid valve 8 and for continuous operation the valve coil of solenoid valve 10.
  • the function of a silencer 3 consists mainly in the separation of the oil added to the air, since the noise from the engine is masked by the siren.
  • a common pressure reducing valve can be used before the branching of the line and then a throttle orifice can be used in one branch of the line. The independent controllability of the speed (or pitch) is then lost.

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Alarm Systems (AREA)
  • Valves And Accessory Devices For Braking Systems (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)

Claims (6)

  1. Sirène d'alarme comportant un générateur acoustique pourvu d'une roue de compresseur radial entraînée en rotation par un moteur et tournant dans une bague stationnaire pourvue d'ouvertures, caractérisée en ce que l'unité motrice entraînant en rotation la roue de compresseur radial est un moteur à air comprimé à haute vitesse (2) vers lequel est amené, à partir d'un accumulateur d'air comprimé (14) et à l'aide d'une source d'air comprimé (15) prévue en amont de celui-ci, l'air comprimé nécessaire uniquement pour le fonctionnement du moteur à air comprimé, et en ce que le moteur à air comprimé (2) et l'accumulateur d'air comprimé (14) sont reliés par l'intermédiaire d'une conduite d'air comprimé (4) possédant deux conduites dérivées ou plus, étant précisé qu'il est prévu, comme organes d'arrêt dans lesdites conduites dérivées, des soupapes (6, 7, 8, 9) à actionnement électromagnétique et, disposées en amont de celles-ci, dans le sens du courant, des soupapes régulatrices (10, 11) commandant le moteur à air comprimé (2).
  2. Sirène d'alarme selon la revendication 1, caractérisée en ce que la source d'air comprimé est conçue comme un compresseur (15).
  3. Sirène d'alarme selon la revendication 1 ou 2, caractérisée en ce qu'il est prévu, dans une conduite d'air comprimé (4) qui relie la source d'air comprimé (15) au moteur à air comprimé (2), un filtre à air (13), un graisseur (12) et/ou une soupape anti-retour (5).
  4. Sirène d'alarme selon la revendication 3, caractérisée en ce qu'un silencieux (3) est raccordé au moteur à air comprimé (2).
  5. Sirène d'alarme selon la revendication 3 ou 4, caractérisée en ce que la conduite d'air comprimé (4) est aussi courte que possible.
  6. Sirène d'alarme selon la revendication 1, caractérisée en ce qu'une soupape de régulation de pression apte à être commandée est introduite dans la conduite d'air comprimé (4).
EP89114069A 1989-07-29 1989-07-29 Sirène d'alarme Expired - Lifetime EP0411168B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP89114069A EP0411168B1 (fr) 1989-07-29 1989-07-29 Sirène d'alarme
AT89114069T ATE88593T1 (de) 1989-07-29 1989-07-29 Alarmsirene.
DE8989114069T DE58904158D1 (de) 1989-07-29 1989-07-29 Alarmsirene.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP89114069A EP0411168B1 (fr) 1989-07-29 1989-07-29 Sirène d'alarme

Publications (2)

Publication Number Publication Date
EP0411168A1 EP0411168A1 (fr) 1991-02-06
EP0411168B1 true EP0411168B1 (fr) 1993-04-21

Family

ID=8201695

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89114069A Expired - Lifetime EP0411168B1 (fr) 1989-07-29 1989-07-29 Sirène d'alarme

Country Status (3)

Country Link
EP (1) EP0411168B1 (fr)
AT (1) ATE88593T1 (fr)
DE (1) DE58904158D1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2771216C (fr) * 2009-08-10 2017-12-12 Tyco Fire Products Lp Sirene
CN104504849B (zh) * 2014-12-18 2017-04-05 中车北京二七机车有限公司 一种报警装置

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE457347C (de) * 1926-11-26 1928-03-14 John Pell Northey Tonsignalanlage mit einer Tonerzeugungsvorrichtung nach Art einer Sirene oder eines Diaphons, bei welcher Luft fuer den Antrieb und getrennt zugefuehrte Luft fuer die Tonerzeugung verwendet wird
GB498208A (en) * 1937-10-29 1939-01-04 Chance Brothers & Co Ltd Improvements relating to sound producing apparatus
US2528515A (en) * 1946-01-04 1950-11-07 Specialties Dev Corp Siren
DE1215030B (de) * 1963-10-11 1966-04-21 Pintsch Bamag Ag Sirenenanlage

Also Published As

Publication number Publication date
DE58904158D1 (de) 1993-05-27
EP0411168A1 (fr) 1991-02-06
ATE88593T1 (de) 1993-05-15

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