EP0158038B1 - Générateur de brouillard - Google Patents

Générateur de brouillard Download PDF

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Publication number
EP0158038B1
EP0158038B1 EP85101515A EP85101515A EP0158038B1 EP 0158038 B1 EP0158038 B1 EP 0158038B1 EP 85101515 A EP85101515 A EP 85101515A EP 85101515 A EP85101515 A EP 85101515A EP 0158038 B1 EP0158038 B1 EP 0158038B1
Authority
EP
European Patent Office
Prior art keywords
fog
generator
liquid
generator according
chamber
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
EP85101515A
Other languages
German (de)
English (en)
Other versions
EP0158038A1 (fr
Inventor
Reinhard Simon
Kurt Ludwig Dipl.-Chem. Richter
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.)
OFFERTA DI LICENZA AL PUBBLICO
Original Assignee
Individual
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
Priority claimed from DE19848404591 external-priority patent/DE8404591U1/de
Application filed by Individual filed Critical Individual
Priority to AT85101515T priority Critical patent/ATE34677T1/de
Publication of EP0158038A1 publication Critical patent/EP0158038A1/fr
Application granted granted Critical
Publication of EP0158038B1 publication Critical patent/EP0158038B1/fr
Expired legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41H—ARMOUR; ARMOURED TURRETS; ARMOURED OR ARMED VEHICLES; MEANS OF ATTACK OR DEFENCE, e.g. CAMOUFLAGE, IN GENERAL
    • F41H9/00—Equipment for attack or defence by spreading flame, gas or smoke or leurres; Chemical warfare equipment
    • F41H9/06—Apparatus for generating artificial fog or smoke screens
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63J—DEVICES FOR THEATRES, CIRCUSES, OR THE LIKE; CONJURING APPLIANCES OR THE LIKE
    • A63J5/00—Auxiliaries for producing special effects on stages, or in circuses or arenas
    • A63J5/02—Arrangements for making stage effects; Auxiliary stage appliances
    • A63J5/025—Devices for making mist or smoke effects, e.g. with liquid air
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/20—Mixing gases with liquids
    • B01F23/21—Mixing gases with liquids by introducing liquids into gaseous media
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B17/00—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups
    • B05B17/04—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods
    • B05B17/06—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods using ultrasonic or other kinds of vibrations
    • B05B17/0607—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods using ultrasonic or other kinds of vibrations generated by electrical means, e.g. piezoelectric transducers
    • B05B17/0615—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods using ultrasonic or other kinds of vibrations generated by electrical means, e.g. piezoelectric transducers spray being produced at the free surface of the liquid or other fluent material in a container and subjected to the vibrations

Definitions

  • the invention relates to a preferably portable fog generator for displaying and / or amplifying optical effects according to the preamble of the main claim.
  • Mist generators for creating optical effects are used in discotheques, theaters, bars and on stages, whereby to generate the mist, either pieces of dry ice are immersed in hot water or aliphatic oils are evaporated by heating and then quickly condensed by mixing with cold air. With such fog generators, a lengthy heating-up process is required, and it cannot be avoided that liquid separation takes place on walls, floors, ceilings and other objects in the environment by condensation of the aerosols. If dry ice is used, there is an uncomfortable cooling of the air layers near the ground and a considerable CO 2 enrichment of the air. If aliphatic oils are used, hot and often flammable aerosols are formed, the condensate of which promotes the rapid spread of fire in the event of a fire.
  • a mist generator is known from the generic DE-A-3126952, in which an aqueous hygroscopic solution is evaporated and condensed instead of the aliphatic oils.
  • This known arrangement has the disadvantage that long heating-up times are also required, and that the hygroscopic aqueous solution brings about a reduction in the atmospheric humidity, which may be harmful to health, while at the same time causing odors, and that these aerosols often contain substances which are harmful to health.
  • the invention has for its object to provide a fog generator that immediately after switching on, ie. H. quickly, large amounts of an effect mist that has a strong light-scattering effect, but this mist contains no harmful substances, is not flammable and condenses less on objects in the vicinity of the generator than before.
  • the interaction of the features of the main claim has the effect that the required dense fog structure can be achieved with several and simultaneously operated ultrasonic transducers.
  • Operating these ultrasonic transducers leads to high power loss in the high-frequency generator.
  • the generation of ultrasonic vibrations is coupled with the simultaneous generation of so-called power losses, with the best electronic equipment available today the power loss is still 40% and is converted into heat. This heat must be dissipated effectively.
  • the shielding of the high-frequency generators is necessary in order to avoid influencing the ultrasonic transducers with one another.
  • the electrically highly conductive shield leads to a heat department, which is important given the high power loss of the high-frequency generator.
  • an aerosol generator which is intended for medical purposes, for example to treat throat or pneumonia.
  • This well-known aerosol generator works with ultrasound generators, but here it is not necessary to create a dense mist, but only liquid to be converted into an aerosol, but not into a highly light-scattering mist, and this mist should not be generated quickly and in large quantities but must be tailored to the patient's breathing ability.
  • This known arrangement could therefore contribute nothing to achieving the object on which the invention is based.
  • each ultrasound transducer is assigned its own high-frequency generator that is matched to it ensures that each ultrasound transducer works independently and with optimum performance and that the others remain functional in the event of an electrical fault in a high-frequency generator.
  • the ultrasonic transducers are fastened to the cloud chamber floor by elastic parts means that the ultrasound transducers are only slightly damped by their holder and that only a small part of their vibrational energy reaches the cloud chamber floor. As a result, the generated ultrasound energy can be transferred to the liquid without major losses, so that the generator is effective.
  • the surfaces of the ultrasonic transducers can apply high-frequency vibrations to the liquid that is always present in the cloud chamber. This reduces the shielding problems.
  • the housing walls of the high-frequency generators from good electrically conductive material, preferably from aluminum, for the purpose of good electrical radio interference suppression.
  • Aluminum is particularly suitable here, since it is relatively inexpensive, easy to process and has good electrical and thermal conductivity.
  • the liquid height above the ultrasound-emitting surfaces of the ultrasound transducers is advantageously continuously adjusted to at least 0.1 mm during operation by means of suitable regulating devices which act on the liquid pump.
  • suitable control devices can, for example, be sensors, light barriers or switches triggered by floats, which act directly or indirectly on the liquid pump, and thus adjust the liquid level in the cloud chamber in such a way that the above-mentioned condition is met. So that will ensures that there is always enough liquid available for atomization and that the ultrasonic transducers run dry and thus prevent their damage.
  • the angle between the ultrasound-emitting surfaces of the ultrasound transducers and the surface of the liquid resting in the cloud chamber is less than 90 °, preferably parallel to one another. This arrangement of the ultrasonic transducer surfaces ensures that an optimal efficiency of the liquid atomization is achieved.
  • the bottom of the fog chamber is designed as a collecting container for the liquid to be atomized and opens into an outlet at the lowest point.
  • This embodiment of the invention can be used for transport purposes, e.g. B. by reversing the polarity of the pump, the entire liquid can be emptied from the cloud chamber into an outside tank. This prevents liquid from leaking out of the generator during transport.
  • a further advantageous embodiment consists in preferably using a self-priming liquid pump as the pump of the generator.
  • a self-priming liquid pump as the pump of the generator.
  • an easily transportable and refillable external tank can be used as the liquid supply, which is connected to the pump on the suction side via a corresponding liquid channel.
  • a filter is preferably attached to at least one point in the liquid channel, preferably at the end that lies outside the generator housing.
  • This filter can e.g. B. be designed as an immersion filter, which is inserted into an external tank and prevents contaminants from entering the liquid channels, the pump or the cloud chamber. This avoids unnecessary contamination of the cloud chamber and, at the same time, potential causes of faults.
  • Dust filters are arranged in the area of the air inlet openings of the blowers. This prevents dust or dirt particles from getting into the generator and in particular into the fog chamber, otherwise the function of the ultrasonic transducers or the sensors for controlling and monitoring the liquid level could be impaired.
  • FIG. 1 there is a mist generator for generating liquid mist by means of several ultrasound sources from a mist chamber 1, the mist chamber floor 17 of which is designed as a collecting container for the liquid 7 to be nebulized, and which has an outlet 18 at its lowest point, which opens into a liquid channel 4 .
  • the liquid channel 4 is connected to a pump 3, which pumps the liquid to be atomized from an external liquid tank into the fog chamber 1 via a liquid channel 5 and liquid filter 19.
  • the fog chamber floor 17 is designed in such a way that openings are provided at several points, in which ultrasonic transducers 6 are installed by means of suitable elastic connecting parts 12.
  • the elastic parts 12 simultaneously seal the fog chamber floor 17 against the ultrasound-emitting surface 15, so that no liquid 7 can escape here.
  • the surfaces 15 of the ultrasonic transducers 6 are arranged in such a way that they are constantly wetted by the liquid 7 and are aligned parallel to the stationary liquid surface 16.
  • the ultrasound-emitting surfaces 15 are preferably arranged horizontally, while the fog chamber floor 17 has a slight slope in the direction of the outlet 18.
  • two sensors 20 and 21 are located in the fog chamber 1, for example on a side wall of the fog generator.
  • the sensor 20 serves to control the pump 3 in order to regulate the level of the liquid 7 in the fog chamber 1.
  • the sensor 21 switches off high-frequency generators 11 and at the same time triggers optical or acoustic signal generators 22 and 23.
  • a blower 8 which is preferably arranged in the upper region of the fog chamber 1, sucks through a dust filter 30 through corresponding openings in the generator housing 10 from the outside and generates an air flow. Arrow tung.
  • the air mixes in the cloud chamber 1 with the liquid 7 atomized by the ultrasonic transducers 6, an aerosol being formed which, when flowing through the droplet separator 24, is freed of coarse droplets and liquid splashes at its obstacles 26, 27, 28 and then by the fog generator leaves a blow-out duct 2.
  • the bottom 25 of the droplet separator 24 and the bottom 29 of the blow-out chute 2 have a slight slope in the direction of the fog chamber 1 so that separated liquid can flow back to the fog chamber 1.
  • the obstacle 27 of the droplet separator 24 is provided with holes 33 to allow the liquid to return.
  • a second blower 9 is arranged in the lower part of the fog generator, which draws in fresh air through a dust filter 31 and through openings in the rear wall of the fog generator, which serves to cool the electrical components, in particular the high-frequency generators 11, the ultrasonic transducers 6 and the pump 3.
  • the air flow heated in the process leaves the generator through outlet openings 32 arranged in the side walls.
  • the high-frequency generators 11 work simultaneously in the operating state and supply the ultrasonic transducers 6 with high-frequency alternating current.
  • the ultrasonic transducers 6 convert this alternating current into mechanical vibrations, which are transmitted from the sound-emitting surfaces 15 to the liquid 7. Due to the effect of the ultrasonic vibrations, the liquid 7 is atomized into the finest droplets on the surface 16. Above the liquid surface 16, the liquid droplets mix in the cloud chamber 1 with the air which is always present there.
  • the aerosol thus produced is transported out of the mist generator by the air flow generated by the blower 8 after passing through the droplet separator 24 through the outlet shaft 2.
  • the fog chamber floor 17 is also a wall of a high-frequency generator 13.
  • the ultrasonic transducers are accommodated in the housing 14 in such a way that the sound-emitting surfaces 15 are located in corresponding recesses in the cloud chamber floor 17.
  • the sound-emitting parts of the ultrasonic transducers are held and sealed by elastic parts 1.2.
  • the elastic parts 12 prevent liquid from penetrating into the high-frequency generator 13 and the ultrasonic energy from being diverted into the cloud chamber floor 17.
  • the interior of a housing 14 also contains the ultrasound transducers (not shown) with their sound-emitting surfaces 15, which convert the alternating electrical currents into mechanical vibrations.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Special Spraying Apparatus (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Claims (19)

1. Nébuliseur, de préférence transportable, destiné à réaliser ou renforcer des effets optiques, comprenant une chambre de nébulisation qui débouche dans une cheminée d'éjection, une pompe qui est reliée par des conduits de liquide, d'une part à un réservoir situé en dehors du générateur et, d'autre part, à la chambre de nébulisation, un producteur de nuage qui transforme le liquide contenu à l'intérieur de la chambre de nébulisation en un aérosol, un ventilateur qui expulse l'aérosol de la chambre de nébulisation et l'expulse du nébuliseur en passant par la cheminée d'éjection, et un boîtier qui supporte et renferme les organes précités, caractérisé par le fait que, dans la chambre de nébulisation (1) sont agencés plusieurs transducteurs à ultrasons (6), que l'on fait travailler simultanément avec des vibrations à haute fréquence, et qui sont alimentés par un ou plusieurs générateurs de haute fréquence (11, 13) blindés par une matière bonne conductrice de l'électricité, de préférence l'aluminium, qu'un dispositif est prévu pour refroidir les organes électriques et qu' un séparateur de gouttelettes (24) est agencé à l'intérieur du nébuliseur, de préférence entre la chambre de nébulisation (1) et la cheminée d'éjection (2).
2. Nébuliseur selon la revendication 1, caractérisé par le fait que chacun des transducteurs à ultrasons (6) est alimenté par un générateur de haute fréquence (11) qui lui est propre et qui est accordé à ce transducteur.
3. Nébuliseur selon la revendication 1, caractérisé par le fait que les transducteurs à ultrasons (6) sont fixés au fond (17) de la chambre de nébulisation par des éléments élastiques (12).
4. Nébuliseur selon une des revendications 1 à 3, caractérisé en ce qu'au moins une paroi du boîtier du générateur de haute fréquence (13) constitue en même temps une partie du fond (17) de la chambre de nébulisation.
5. Nébuliseur selon l'une des revendications 1 à 4, caractérisé par le fait que l'angle formé entre les surfaces (15) des transducteurs à ultrasons (6), qui émettent les ultrasons, et la surface (16) du liquide (7) contenu dans la chambre de nébulisation (1) est inférieur à 90° et en ce que les surfaces (15, 16) sont de préférence orientés parallèlement l'une à l'autre.
6. Nébuliseur selon une des revendications 1 à 5, caractérisé par le fait que le fond (17) de la chambre de nébulisation (1) est en pente descendante vers l'écoulement (18).
7. Nébuliseur selon la revendication 6, caractérisé par le fait qu'un conduit de liquide (4) arrivant de la pompe (3) débouche dans la chambre de nébulisation (1) au niveau de l'écoulement (18).
8. Nébuliseur selon une des revendications 1 à 7, caractérisé par le fait que la pompe (3) du nébuliseur est de préférence une pompe à liquide à amorçage automatique.
9. Nébuliseur selon l'une des revendications 1 à 8, caractérisé par le fait qu'au moins un filtre (19) est agencé en au moins un point du conduit de liquide (4, 5), de préférence à l'extrémité du conduit qui est située à l'extérieur du boîtier du nébuliseur.
10. Nébuliseur selon une des revendications 1 à 9, caractérisé par le fait que, dans la chambre de nébulisation (1) est agencé un capteur (20) qui sert directement ou indirectement la pompe à liquide (3).
11. Nébuliseur selon une des revendications 1 à 10, caractérisé par le fait que, dans la chambre de nébulisation (1), est agencé au moins un capteur (21) qui met à l'arrêt au moins une partie du nébuliseur, en particulier le ou les générateurs de haute fréquence (11,13) lorsque la surface libre du liquide contenu dans la chambre de nébulisation (1) tombe au-dessous d'un niveau minimum du liquide.
12. Nébuliseur selon la revendication 11, caractérisé par le fait que le fond (25) du séparateur de gouttelettes (24) présente und légère pente de manière à renvoyer le liquide séparé à l'écoulement (18).
13. Nébuliseur selon une des revendications 1 à 12, caractérisé par le fait que le fond (29) de la cheminée d'éjection (2) présente une légère pente qui descend vers la chambre de nébulisation (1).
14. Nébuliseur selon une des revendications 1 à 13, caractérisé par le fait que des filtres à poussière (30, 31) sont agencés dans la région des ouvertures d'entrée d'air des ventilateurs (8, 9).
15. Nébuliseur selon une des revendications 1 à 14, caractérisé par le fait que, pour refroidir les organes électriques, il est prévu un ventilateur (9) dont les ouvertures (32) servant pour la sortie du flux d'air sont de préférence disposées perpendiculairement à la cheminée de sortie (2) de l'aérosol.
16. Nébuliseur selon une ou plusieurs des revendications précédentes 1 à 15, caractérisé par le fait qu'au nébuliseur, est associé un deuxième nébuliseur qui produit un nuage artificiel par vaporisation d'un liquide fumigène à base d'huile ou à base d'eau glycolée, avec utilisation de chaleur, les deux nuages produits de cette façon étant interpénétrés l'un avec l'autre et mélangés et les deux sortes de nuage étant dosés en fonction de l'effet désiré.
17. Nébuliseur selon la revendication 16, caractérisé par le fait qu'on peut faire travailler les deux nébuliseurs l'un indépendamment de l'autre.
18. Nébuliseur selon les revendications 16 et 17, caractérisé par le fait que les deux nébuliseurs sont réunis en une seule unité formant nébuliseur.
EP85101515A 1984-02-16 1985-02-13 Générateur de brouillard Expired EP0158038B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT85101515T ATE34677T1 (de) 1984-02-16 1985-02-13 Nebelgenerator.

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE19848404591 DE8404591U1 (de) 1984-02-16 1984-02-16 Nebelgenerator
DE8404591U 1984-02-16
DE3441002 1984-11-09
DE3441002 1984-11-09

Publications (2)

Publication Number Publication Date
EP0158038A1 EP0158038A1 (fr) 1985-10-16
EP0158038B1 true EP0158038B1 (fr) 1988-06-01

Family

ID=25826397

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85101515A Expired EP0158038B1 (fr) 1984-02-16 1985-02-13 Générateur de brouillard

Country Status (3)

Country Link
EP (1) EP0158038B1 (fr)
DE (1) DE3562990D1 (fr)
ES (1) ES8703822A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202004007924U1 (de) * 2004-05-17 2005-10-20 Waeco International Gmbh Ultraschallvernebelungsgerät
WO2008132112A1 (fr) * 2007-04-27 2008-11-06 Bandit Nv Générateur de brume

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3718318A1 (de) * 1987-06-01 1988-12-22 Sueddeutsche Etna Werk Gmbh Verfahren und vorrichtung zum schadstoff- und rueckstandsfreien sichtbarmachen von stroemungen in reinstluft-arbeitsraeumen
GB9412676D0 (en) * 1994-06-23 1994-08-10 Jem Smoke Machine Co Improvements in or relating to a method of creating an effect
DE19706698A1 (de) * 1997-02-20 1998-08-27 Degussa Verfahren und Apparat zur Ultraschall-Vernebelung
FR2773229A1 (fr) * 1997-12-30 1999-07-02 Alain Zarudiansky Perfectionnement aux dispositifs pour creer des ecrans fluides
ATE387251T1 (de) * 2004-06-30 2008-03-15 Martin Mfg Uk Plc Raucherzeuger
JP2006036343A (ja) * 2004-07-30 2006-02-09 Toppan Printing Co Ltd 噴霧殺菌装置
GB201110906D0 (en) * 2011-06-27 2011-08-10 Amazon Bio Guard Ltd A portable apparatus for generating and broadcasting an aerosol mist
AT517497A1 (de) * 2015-07-31 2017-02-15 Gerard Tomazetich Mario Verfahren und Vorrichtung zur Herstellung von Bodennebel
EP3181242A1 (fr) * 2015-12-16 2017-06-21 Idfc Ag Dispositif de dispersion de fluide à ultrasons
AT519865B1 (de) * 2017-06-16 2018-11-15 Mario Gerard Tomazetich Vorrichtung zur Herstellung von Effektnebel
EP4340966A1 (fr) * 2021-05-21 2024-03-27 Universal City Studios LLC Buse à effet vapeur pour salle de spectacle

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1165905B (de) * 1961-04-01 1964-03-19 Akad Wissenschaften Ddr Untersuchungsapparatur mit Ultraschall-Aerosolen unter Verwendung von Ultraschall-Schwingern
FR1450684A (fr) * 1965-07-07 1966-06-24 Commissariat Energie Atomique Procédé et dispositif de génération d'aérosols à partir d'un liquide
FR1499393A (fr) * 1966-09-13 1967-10-27 Unilever Nv Procédé et dispositif pour diffuser des aérosols à grande vitesse
US3469785A (en) * 1967-07-28 1969-09-30 Macrosonics Corp High frequency ultrasonic fog generator and method
DE2606037A1 (de) * 1976-02-14 1977-08-18 Hirtz Vorrichtung zum erzeugen eines aerosols mittels ultraschall

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202004007924U1 (de) * 2004-05-17 2005-10-20 Waeco International Gmbh Ultraschallvernebelungsgerät
WO2008132112A1 (fr) * 2007-04-27 2008-11-06 Bandit Nv Générateur de brume

Also Published As

Publication number Publication date
ES8703822A1 (es) 1987-03-01
EP0158038A1 (fr) 1985-10-16
DE3562990D1 (en) 1988-07-07
ES540481A0 (es) 1987-03-01

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