EP3328513B1 - Method and device for producing low lying fog - Google Patents

Method and device for producing low lying fog Download PDF

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Publication number
EP3328513B1
EP3328513B1 EP16777889.3A EP16777889A EP3328513B1 EP 3328513 B1 EP3328513 B1 EP 3328513B1 EP 16777889 A EP16777889 A EP 16777889A EP 3328513 B1 EP3328513 B1 EP 3328513B1
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Prior art keywords
fog
mixing chamber
water
fan
mist
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German (de)
French (fr)
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EP3328513A1 (en
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Mario TOMAZETICH
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    • 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

Definitions

  • the invention relates to a method and a device for producing ground fog as an effect, for example in the field of stage technology, with a fog fluid, e.g. Glycol-based fog machine evaporating.
  • a fog fluid e.g. Glycol-based fog machine evaporating.
  • Known fog machines evaporate a fog fluid, which in different composition meets the requirements together with the setting parameters of the machines. For example, the service life and the density as well as the flow rate can be adjusted and varied. Even in fire-fighting exercises, stage fog is used to simulate smoke, so that the handling of respiratory protection equipment can be trained in a realistic way.
  • stage fog is used to simulate smoke, so that the handling of respiratory protection equipment can be trained in a realistic way.
  • dry ice which causes or supports special stage effects like a foam carpet
  • dry ice namely solid, frozen CO 2
  • This evaporates at room temperature a very nice, uniform and long-lasting fog layer forms on the floor, which can be even better staged by light effects.
  • the procurement and cooling of sufficient quantities of dry ice is problematic and also expensive. It has also been used for this purpose, liquid nitrogen, which, however, must also be cooled.
  • hazers are known for cooling on hot days, ie fans with fine water droplets in the air stream. These cool down the airflow and positively influence the sensation of humans in high heat.
  • the invention aims to provide a process for the production of an effective ground fog which is long-lasting, in no way harmful to health is perceived as pleasant by singers, actors, musicians and the public.
  • a device according to claim 1 It is particularly useful to guide the mist of a fog machine under pressure flowing mist for water enrichment through a water bath from which the mist rises again and is blown out. It has proved to be particularly effective if water droplets, preferably finely atomized water with a droplet size of 2 ⁇ to 10 ⁇ are added to the mist from the fog machine for enrichment with water, which keep the mist on the ground. These finest water droplets adhere to the nebulae, stabilize them and hold them to the ground. Even if such a ground fog flows in an orchestra pit and then further into the audience, no unpleasant odor is felt. This fog is perceived as refreshing. Also on the vocal chords of singers this fog has a positive influence.
  • a particular embodiment of the device is characterized in that the mist formed in the fog machine is guided into the intake region of a fan in whose overpressure air flow one or more ultrasonic atomizers are provided in the center of the fan or in the vicinity thereof. Due to the water already contained in the air stream mixing is accelerated and the mist exits immediately with a correspondingly adjustable speed.
  • the individual parameters such as amount of mist, flow rate and water content can be set separately because the mixing zone is designed as a mixing chamber and each has an input for the smoke machine and a forced air flow from a fan and if the air flow and the mist in the mixing chamber on the Water atomizer and are guided over at least one downstream baffle for water separation.
  • the mixing chamber contains a baffle before the mist leaves the mixing chamber. This acts as a water separator, must be overflowed and deprives the mist of excess water. Height and inclination are adjustable to achieve the desired water content in the fog. The excess water passes directly to the atomizer and is used in this way again useful.
  • the water atomizer can be assigned directly to the fan arranged at the outlet of a fog machine, from which the finished ground fog then emerges.
  • the fan with atomizer can also blow the water-enriched air into a mixing chamber, into which the mist of a fog machine passes.
  • the mixing chamber contains at least one baffle for separating excess water. Following the baffle, the finished ground fog exits. It is expedient if integrated in the mixing zone or in the mixing chamber, a cooling device or the mixing chamber is connected downstream. This measure supports the formation of ground fog.
  • a particularly effective embodiment is characterized in that Peltier elements are provided following at least one baffle wall, in particular between a plurality of spaced-apart baffles, which form a labyrinth with opposing baffles dipping into the intermediate spaces.
  • Fig. 1 is the output of the fog machine 1, a fan 2 downstream, which accelerates the fog from the fog machine 1 as needed and in the overpressure area a water atomizer 3 is arranged.
  • the latter is fed via a tube 4 from a water tank 5.
  • the water atomizer 3 may be formed as a spray nozzle when the water is supplied or sucked out at elevated pressure. However, it is particularly expedient if the water atomizer 3 operates on an ultrasound basis, as is known in humidifiers.
  • the mist picks up the very fine water droplets in a mixing zone 6, which is formed by a mixing chamber 7, and leaves the device designed as an accessory to the smoke machine 1 at a mouthpiece 8 as water-enriched, heavy ground mist.
  • Both the fan speed and the amount of atomized water are adjustable so that the ground fog can be adapted to the requirements. The adjustments are made such that the ground fog leaves no traces of moisture on a stage or the like. If the fog machine 1 is already equipped with a fan at the output, then eliminates the fan 2 and it can be turned on immediately the atomizer 3 in the expelled fog stream. According to Fig. 1 the positioning of the atomizer 3 in the center of the mist-air flow is expedient. Alternatively or additionally, atomizers 3 may also be provided in a ring shape in the mist-air flow.
  • Fig. 2 shows a variant of one of the smoke machine 1 downstream device.
  • This device has a housing with an inlet 9 for the fog of the fog machine 1 and a second inlet 10 for the intake of air through a Variable-speed fan 11.
  • an atomizer 12 is provided, which is in communication with a water tank (not shown).
  • the sprayer 12 sprayed upward, ie directly into the mixing zone with the incoming mist and the injected air from the fan 11.
  • the region of the housing is referred to as a mixing chamber 13.
  • the water-enriched mist passes into a water separator 14 before it exits a mouthpiece 15.
  • the water separator 14 here comprises a plurality of baffles 16, which form a labyrinth for the flowing mist and remove excess water from the mist. The latter flows back to the atomizer 12.
  • a cooling device 17 for the flowing mist which may be formed for example by Peltier elements.
  • Fig. 3 relates to an embodiment in which the atomizer 18 is not located at the bottom of the mixing chamber 13 (FIG. Fig. 2 ), but as with Fig. 1 immediately downstream of a fan 19 for fresh air.
  • the mist is combined with the water droplets from the fan flow.
  • a baffle 21 for the separation of excess water is symbolically represented. The enriched, heavy mist must exceed this baffle 21, does not lose sufficient water bound to the nebulas and passes behind the baffle 21 to a lower-lying outlet 22, which may be surrounded by a cooling sleeve.
  • Fig. 4 refers to Fig. 2 but may apply mutatis mutandis to other embodiments.
  • the two inputs 9 and 10 lead the fog flow and the air flow not parallel, but at an acute angle to each other - here with crossing point in the cloud of sprayed from the atomizer 12 water droplets. It comes to a particularly good mixing and connection of the very fine water droplets to the fog.
  • the water separator 14 ensures that the exiting mist remains enriched with water, but does not lose excess water, so as not to wet the stage, the actors, the spectators or objects.
  • mist and water droplets are also possible in countercurrent. It can, for example in Fig. 4 the water atomizer 12 be directed obliquely against the oncoming mist and against the air flow of the fan 11. As a result, an increase in efficiency and an even better connection of the water droplets to the mist occur.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Special Spraying Apparatus (AREA)
  • Treating Waste Gases (AREA)

Description

Die Erfindung betrifft ein Verfahren und eine Vorrichtung zur Herstellung von Bodennebel als Effekt beispielsweise im Bereich der Bühnentechnik, mit einer ein Nebelfluid z.B. auf Glykolbasis verdampfenden Nebelmaschine.The invention relates to a method and a device for producing ground fog as an effect, for example in the field of stage technology, with a fog fluid, e.g. Glycol-based fog machine evaporating.

Bekannte Nebelmaschinen verdampfen ein Nebelfluid, welches in unterschiedlicher Zusammensetzung den Ansprüchen zusammen mit den Einstellparametern der Maschinen gerecht wird. So können etwa die Standzeit und die Dichte wie auch die Fließgeschwindigkeit eingestellt und variiert werden. Auch bei Feuerlöschübungen wird Bühnennebel eingesetzt, um Rauch zu simulieren, damit der Umgang mit einer Atemschutzausrüstung realitätsnahe trainiert werden kann. Für Bodennebel, der wie ein Schaumteppich besondere Bühneneffekte herbeiführt oder unterstützt, wird Trockeneis, nämlich festes tiefgekühltes CO2, eingesetzt. Wenn dieses bei Raumtemperatur verdampft, bildet sich eine sehr schöne, gleichmäßige und lang anhaltende Nebelschicht auf dem Boden, die durch Lichteffekte noch besser in Szene gesetzt werden kann. Die Beschaffung und Kühlung ausreichender Mengen von Trockeneis ist jedoch problematisch und auch teuer. Man hat für diesen Zweck auch flüssigen Stickstoff eingesetzt, der jedoch ebenfalls gekühlt werden muss. Nebel aus verdampfendem Trockeneis verdrängt den Luftsauerstoff, sodass es zu Atembeschwerden und zu Kopfschmerzen beim Menschen kommen kann. Dieser Nebel hat auch Einfluss auf die Stimme, die bei längerem Kontakt mit Trockeneisnebel durch Austrocknung im Hals nachteilig verändert wird. Weder CO2 noch Stickstoff sind der Gesundheit förderlich. Der mit Trockeneis erzielbare Effekt lässt sich annähernd auch mit Verdampfer-Nebelmaschinen herstellen, welchen eine Kühlstufe nachgeschaltet ist. EP-A-0 158 038 offenbart eine Vorrichtung zur Herstellung von Bodennebel.Known fog machines evaporate a fog fluid, which in different composition meets the requirements together with the setting parameters of the machines. For example, the service life and the density as well as the flow rate can be adjusted and varied. Even in fire-fighting exercises, stage fog is used to simulate smoke, so that the handling of respiratory protection equipment can be trained in a realistic way. For ground fog, which causes or supports special stage effects like a foam carpet, dry ice, namely solid, frozen CO 2 , is used. When this evaporates at room temperature, a very nice, uniform and long-lasting fog layer forms on the floor, which can be even better staged by light effects. The procurement and cooling of sufficient quantities of dry ice, however, is problematic and also expensive. It has also been used for this purpose, liquid nitrogen, which, however, must also be cooled. Mist of evaporating dry ice displaces the oxygen in the air, causing breathing difficulties and headaches in humans. This mist also has an effect on the voice, which is adversely affected by prolonged contact with dry ice mist due to dehydration in the throat. Neither CO 2 nor nitrogen are good for your health. The effect that can be achieved with dry ice can also be approximately produced with evaporator fog machines, which are followed by a cooling stage. EP-A-0 158 038 discloses a device for producing ground fog.

Unabhängig von der Nebelbildung sind zur Abkühlung an heißen Tagen sogenannte Hazer bekannt, also Ventilatoren mit feinsten Wassertröpfchen im Luftstrom. Diese kühlen den Luftstrom ab und beeinflussen das Empfinden des Menschen bei großer Hitze positiv.Regardless of the mist formation so-called hazers are known for cooling on hot days, ie fans with fine water droplets in the air stream. These cool down the airflow and positively influence the sensation of humans in high heat.

Die Erfindung zielt darauf ab, ein Verfahren für die Herstellung eines effektvollen Bodennebels zur Verfügung zu stellen, der lang anhaltend, in keiner Weise gesundheitsschädlich ist und als angenehm von Sängern, Schauspielern, Musikern sowie vom Publikum empfunden wird. Dies wird durch eine Vorrichtung gemäß Anspruch 1 erreicht. Es ist besonders zweckmäßig, den von einer Nebelmaschine unter Druck ausströmenden Nebel zur Wasseranreicherung durch ein Wasserbad zu führen, aus dem der Nebel wieder aufsteigt und ausgeblasen wird. Als besonders wirksam hat es sich erwiesen, wenn dem Nebel aus der Nebelmaschine zur Anreicherung mit Wasser Wassertröpfchen, vorzugsweise fein zerstäubtes Wasser mit einer Tröpfchengröße von 2µ bis 10µ zugesetzt werden, die den Nebel am Boden halten. Diese feinsten Wassertröpfchen haften an den Nebelmolekülen, stabilisieren diese und halten sie am Boden. Selbst wenn ein solcher Bodennebel in einem Orchestergraben fließt und dann weiter ins Publikum, wird keinerlei unangenehmer Geruch verspürt. Dieser Nebel wird als erfrischend empfunden. Auch auf die Stimmbänder von Sängern hat dieser Nebel einen positiven Einfluss.The invention aims to provide a process for the production of an effective ground fog which is long-lasting, in no way harmful to health is perceived as pleasant by singers, actors, musicians and the public. This is achieved by a device according to claim 1. It is particularly useful to guide the mist of a fog machine under pressure flowing mist for water enrichment through a water bath from which the mist rises again and is blown out. It has proved to be particularly effective if water droplets, preferably finely atomized water with a droplet size of 2μ to 10μ are added to the mist from the fog machine for enrichment with water, which keep the mist on the ground. These finest water droplets adhere to the nebulae, stabilize them and hold them to the ground. Even if such a ground fog flows in an orchestra pit and then further into the audience, no unpleasant odor is felt. This fog is perceived as refreshing. Also on the vocal chords of singers this fog has a positive influence.

Eine besondere Ausführungsform der Vorrichtung ist dadurch gekennzeichnet, dass der in der Nebelmaschine gebildete Nebel in den Ansaugbereich eines Ventilators geführt ist, in dessen Überdruck-Luftströmung ein oder mehrere Ultraschallzerstäuber, im Zentrum des Ventilators oder im Umkreis desselben vorgesehen sind. Durch den bereits im Luftstrom enthaltenen Wasseranteil wird das Vermischen beschleunigt und der Nebel tritt unverzüglich mit entsprechend einstellbarer Geschwindigkeit aus. Die einzelnen Parameter wie Nebelmenge, Fließgeschwindigkeit und Wassergehalt können separat eingestellt werden, weil die Mischzone als Mischkammer ausgebildet ist und über je einen Eingang für die Nebelmaschine und für eine forcierte Luftströmung von einem Ventilator verfügt und wenn die Luftströmung und der Nebel in der Mischkammer über den Wasserzerstäuber und über mindestens eine nachgeordnete Prallwand zur Wasserabscheidung geführt sind. Hier kommen also drei Strömungen in der Mischkammer zusammen, nämlich der klassische Nebel aus einer Verdampfer-Nebelmaschine mit nach Menge und Größe einstellbaren Wassertröpfchen in einer aufsteigenden Wolke etwa aus einem Ultraschallzerstäuber und schließlich der drehzahlregelbare Luftstrom des Ventilators. Diese Ströme werden besonders gut und wirksam gemischt, wenn sie in spitzen Winkeln in der Mischkammer aufeinander treffen, gegebenenfalls im Gegenstrom mit den Wassertröpfchen des Zerstäubers in Berührung kommen und aus der Mischkammer dann als homogener mit Wasser angereicherter Bodennebel austreten. Die Mischkammer enthält eine Prallwand, bevor der Nebel die Mischkammer verlässt. Diese wirkt als Wasserabscheider, muss überströmt werden und entzieht dem Nebel überschüssiges Wasser. Höhe und Neigung sind einstellbar, um den erwünschten Wassergehalt im Nebel zu erreichen. Das überschüssige Wasser gelangt unmittelbar zum Zerstäuber und wird auf diese Weise wieder nutzbringend eingesetzt.A particular embodiment of the device is characterized in that the mist formed in the fog machine is guided into the intake region of a fan in whose overpressure air flow one or more ultrasonic atomizers are provided in the center of the fan or in the vicinity thereof. Due to the water already contained in the air stream mixing is accelerated and the mist exits immediately with a correspondingly adjustable speed. The individual parameters such as amount of mist, flow rate and water content can be set separately because the mixing zone is designed as a mixing chamber and each has an input for the smoke machine and a forced air flow from a fan and if the air flow and the mist in the mixing chamber on the Water atomizer and are guided over at least one downstream baffle for water separation. So here are three flows in the mixing chamber together, namely the classic fog from an evaporator fog machine with water droplets that can be adjusted in terms of quantity and size in an ascending cloud, for example, from an ultrasonic atomizer, and finally the fan speed-adjustable airflow. These streams are particularly well and effectively mixed when they meet at acute angles in the mixing chamber, possibly in countercurrent contact with the water droplets of the atomizer in contact and then emerge from the mixing chamber as a homogeneous water-enriched ground fog. The mixing chamber contains a baffle before the mist leaves the mixing chamber. This acts as a water separator, must be overflowed and deprives the mist of excess water. Height and inclination are adjustable to achieve the desired water content in the fog. The excess water passes directly to the atomizer and is used in this way again useful.

Der Wasserzerstäuber kann, wie erwähnt, unmittelbar dem am Ausgang einer Nebelmaschine angeordneten Ventilator zugeordnet sein, aus dem dann der fertige Bodennebel austritt. Der Ventilator mit Zerstäuber kann aber auch die mit Wasser angereicherte Luft in eine Mischkammer blasen, in die auch der Nebel einer Nebelmaschine gelangt. Die Mischkammer enthält mindestens eine Prallwand zu Abscheidung überschüssigen Wassers. Im Anschluss an die Prallwand tritt der fertige Bodennebel aus. Es ist zweckmäßig, wenn in die Mischzone bzw. in die Mischkammer eine Kühleinrichtung integriert bzw. der Mischkammer nachgeschaltet ist. Diese Maßnahme unterstützt die Bodennebelbildung. Ein besonders wirkungsvolles Ausführungsbeispiel ist dadurch gekennzeichnet, dass als Kühleinrichtung Peltierelemente im Anschluss an mindestens eine Prallwand, insbesondere zwischen mehreren im Abstand zueinander angeordneten Prallwänden vorgesehen sind, die mit gegenüber liegenden, in die Zwischenräume eintauchenden Prallwänden ein Labyrinth bilden.As mentioned, the water atomizer can be assigned directly to the fan arranged at the outlet of a fog machine, from which the finished ground fog then emerges. However, the fan with atomizer can also blow the water-enriched air into a mixing chamber, into which the mist of a fog machine passes. The mixing chamber contains at least one baffle for separating excess water. Following the baffle, the finished ground fog exits. It is expedient if integrated in the mixing zone or in the mixing chamber, a cooling device or the mixing chamber is connected downstream. This measure supports the formation of ground fog. A particularly effective embodiment is characterized in that Peltier elements are provided following at least one baffle wall, in particular between a plurality of spaced-apart baffles, which form a labyrinth with opposing baffles dipping into the intermediate spaces.

In den Zeichnungen sind Ausführungsbeispiele zum Erfindungsgegenstand schematisch dargestellt.

  • Fig. 1 zeigt eine Prinzipdarstellung einer ersten Variante, die nicht zu der Erfindung gehört.
  • Fig. 2 eine Prinzipdarstellung einer zweiten Variante,
  • Fig. 3 eine Prinzipdarstellung einer dritten Variante und
  • Fig. 4 eine Prinzipdarstellung einer alternativen Ausführungsform nach Fig. 2 im Grundriss.
In the drawings, exemplary embodiments of the subject invention are shown schematically.
  • Fig. 1 shows a schematic diagram of a first variant, which does not belong to the invention.
  • Fig. 2 a schematic representation of a second variant,
  • Fig. 3 a schematic diagram of a third variant and
  • Fig. 4 a schematic representation of an alternative embodiment according to Fig. 2 in the floor plan.

Sämtliche Ausführungsbeispiele gehen von einer handelsüblichen Nebelmaschine 1 aus. Diese Geräte arbeiten zumeist auf Verdampferbasis und besitzen einen Tank für ein Nebelfluid. Gemäß Fig. 1 ist dem Ausgang der Nebelmaschine 1 ein Ventilator 2 nachgeschaltet, der den Nebel aus der Nebelmaschine 1 bedarfsgerecht beschleunigt und in dessen Überdruckbereich ein Wasserzerstäuber 3 angeordnet ist. Letzterer wird über ein Röhrchen 4 von einem Wasserbehälter 5 gespeist. Der Wasserzerstäuber 3 kann als Sprühdüse ausgebildet sein, wenn das Wasser mit erhöhtem Druck zugeführt bzw. herausgesaugt wird. Besonders zweckmäßig ist es jedoch, wenn der Wasserzerstäuber 3 auf Ultraschallbasis arbeitet, wie dies bei Luftbefeuchtern bekannt ist. Der Nebel nimmt die hauchfeinen Wassertröpfchen in einer Mischzone 6 auf, die von einer Mischkammer 7 gebildet wird und verlässt die als Zusatzgerät zur Nebelmaschine 1 ausgebildete Vorrichtung an einem Mundstück 8 als mit Wasser angereicherter, schwerer Bodennebel. Sowohl die Ventilatordrehzahl, als auch die Menge des zerstäubten Wassers sind regelbar, damit der Bodennebel den Erfordernissen angepasst werden kann. Die Einstellungen erfolgen derart, dass der Bodennebel keine Feuchtigkeitsspuren auf einer Bühne oder dergleichen hinterlässt. Wenn die Nebelmaschine 1 bereits mit einem Ventilator am Ausgang ausgestattet ist, dann entfällt der Ventilator 2 und es kann unmittelbar der Zerstäuber 3 in den ausgestoßenen Nebelstrom eingeschaltet werden. Gemäß Fig. 1 ist die Positionierung des Zerstäubers 3 im Zentrum der Nebel-Luftströmung zweckmäßig. Es können alternativ oder zusätzlich Zerstäuber 3 auch ringförmig im Nebel-Luftstrom vorgesehen sein.All embodiments are based on a commercial fog machine 1. These devices are mostly evaporator-based and have a tank for a fog fluid. According to Fig. 1 is the output of the fog machine 1, a fan 2 downstream, which accelerates the fog from the fog machine 1 as needed and in the overpressure area a water atomizer 3 is arranged. The latter is fed via a tube 4 from a water tank 5. The water atomizer 3 may be formed as a spray nozzle when the water is supplied or sucked out at elevated pressure. However, it is particularly expedient if the water atomizer 3 operates on an ultrasound basis, as is known in humidifiers. The mist picks up the very fine water droplets in a mixing zone 6, which is formed by a mixing chamber 7, and leaves the device designed as an accessory to the smoke machine 1 at a mouthpiece 8 as water-enriched, heavy ground mist. Both the fan speed and the amount of atomized water are adjustable so that the ground fog can be adapted to the requirements. The adjustments are made such that the ground fog leaves no traces of moisture on a stage or the like. If the fog machine 1 is already equipped with a fan at the output, then eliminates the fan 2 and it can be turned on immediately the atomizer 3 in the expelled fog stream. According to Fig. 1 the positioning of the atomizer 3 in the center of the mist-air flow is expedient. Alternatively or additionally, atomizers 3 may also be provided in a ring shape in the mist-air flow.

Fig. 2 zeigt eine Variante einer der Nebelmaschine 1 nachgeordneten Vorrichtung. Diese Vorrichtung verfügt über ein Gehäuse mit einem Eingang 9 für den Nebel der Nebelmaschine 1 sowie über einen zweiten Eingang 10 zur Ansaugung von Luft durch einen drehzahlregelbaren Ventilator 11. Im Inneren des Gehäuses ist ein Zerstäuber 12 vorgesehen, der mit einem Wasserbehälter (nicht dargestellt) in Verbindung steht. Nach Fig. 2 sprüht der Zerstäuber 12 nach oben, also direkt in die Mischzone mit dem zuströmenden Nebel und die eingeblasene Luft vom Ventilator 11. Der Bereich des Gehäuses wird als Mischkammer 13 bezeichnet. Der mit Wasser angereicherte Nebel gelangt in einen Wasserabscheider 14, bevor er aus einem Mundstück 15 austritt. Der Wasserabscheider 14 umfasst hier mehrere Prallwände 16, die ein Labyrinth für den durchströmenden Nebel bilden und überschüssiges Wasser aus dem Nebel entnehmen. Letzteres rinnt zurück zum Zerstäuber 12. Im Wasserabscheider 14 befindet sich ferner eine Kühleinrichtung 17 für den durchströmenden Nebel, die beispielsweise von Peltierelementen gebildet sein kann. Fig. 3 betrifft eine Ausführungsform, bei der der Zerstäuber 18 nicht am Boden der Mischkammer 13 (Fig. 2), sondern wie bei Fig. 1 unmittelbar einem Ventilator 19 für Frischluft nachgeordnet ist. In einer Mischkammer 20 erfolgt die Vereinigung des Nebels mit den Wassertröpfchen aus der Ventilatorströmung. Hier ist symbolhaft nur eine Prallwand 21 zur Abscheidung von überschüssigem Wasser dargestellt. Der angereicherte, schwere Nebel muss diese Prallwand 21 übersteigen, verliert dabei nicht ausreichend an die Nebelmoleküle gebundenes Wasser und gelangt hinter der Prallwand 21 zu einem tiefer liegenden Ausgang 22, der allenfalls von einer Kühlmanschette umgeben sein kann. Fig. 2 shows a variant of one of the smoke machine 1 downstream device. This device has a housing with an inlet 9 for the fog of the fog machine 1 and a second inlet 10 for the intake of air through a Variable-speed fan 11. Inside the housing, an atomizer 12 is provided, which is in communication with a water tank (not shown). To Fig. 2 The sprayer 12 sprayed upward, ie directly into the mixing zone with the incoming mist and the injected air from the fan 11. The region of the housing is referred to as a mixing chamber 13. The water-enriched mist passes into a water separator 14 before it exits a mouthpiece 15. The water separator 14 here comprises a plurality of baffles 16, which form a labyrinth for the flowing mist and remove excess water from the mist. The latter flows back to the atomizer 12. In the water separator 14 is also a cooling device 17 for the flowing mist, which may be formed for example by Peltier elements. Fig. 3 relates to an embodiment in which the atomizer 18 is not located at the bottom of the mixing chamber 13 (FIG. Fig. 2 ), but as with Fig. 1 immediately downstream of a fan 19 for fresh air. In a mixing chamber 20, the mist is combined with the water droplets from the fan flow. Here, only a baffle 21 for the separation of excess water is symbolically represented. The enriched, heavy mist must exceed this baffle 21, does not lose sufficient water bound to the nebulas and passes behind the baffle 21 to a lower-lying outlet 22, which may be surrounded by a cooling sleeve.

Fig. 4 bezieht sich auf Fig. 2, kann aber sinngemäß auch für andere Ausführungsformen gelten. Die beiden Eingänge 9 und 10 führen den Nebelstrom und den Luftstrom nicht parallel, sondern in einem spitzen Winkel aufeinander zu - hier mit Kreuzungspunkt in der Wolke der vom Zerstäuber 12 hochgesprühten Wassertröpfchen. Es kommt zu einer besonders guten Durchmischung und Anbindung der hauchfeinen Wassertröpfchen an den Nebel. Der Wasserabscheider 14 sorgt dafür, dass der austretende Nebel zwar angereichert mit Wasser bleibt, jedoch kein überschüssiges Wasser verliert, um weder die Bühne, noch die Akteure, die Zuschauer oder Gegenstände zu benetzen. Fig. 4 refers to Fig. 2 but may apply mutatis mutandis to other embodiments. The two inputs 9 and 10 lead the fog flow and the air flow not parallel, but at an acute angle to each other - here with crossing point in the cloud of sprayed from the atomizer 12 water droplets. It comes to a particularly good mixing and connection of the very fine water droplets to the fog. The water separator 14 ensures that the exiting mist remains enriched with water, but does not lose excess water, so as not to wet the stage, the actors, the spectators or objects.

Ergänzend sei vermerkt, dass ein Vermischen von Nebel und Wassertröpfchen auch im Gegenstrom möglich ist. Es kann beispielsweise in Fig. 4 der Wasser-Zerstäuber 12 schräg gegen den heranströmenden Nebel und gegen die Luftströmung des Ventilators 11 gerichtet sein. Auch dadurch tritt eine Wirkungsgraderhöhung und eine noch bessere Anbindung der Wassertröpfchen an den Nebel ein.In addition, it should be noted that a mixing of mist and water droplets is also possible in countercurrent. It can, for example in Fig. 4 the water atomizer 12 be directed obliquely against the oncoming mist and against the air flow of the fan 11. As a result, an increase in efficiency and an even better connection of the water droplets to the mist occur.

Claims (7)

  1. A device for performing a method for producing a ground fog as an effect, for example in the field of stage technology, comprising a fog machine evaporating a fog fluid, e.g. glycol-based, characterized in that a mixing zone (6) formed as a mixing chamber (7, 13, 20) for mixing the fog with water droplets from an ultrasonic atomizer (3, 12, 18) is arranged downstream of the fog machine (1), wherein the mixing chamber (7, 13, 20) each has an inlet (9, 10) for the fog machine (1) and for a forced air flow from a fan (2, 11, 19), and wherein the air flow and the fog in the mixing chamber (7, 13, 20) are guided via the ultrasonic atomiser (3, 12, 18) and via at least one impact wall (16, 21) arranged downstream for water separation.
  2. The device according to claim 1, characterized in that the ultrasonic atomizer (3, 12, 18) produces water droplets with a droplet size of 2µ to 10µ which subsequently are mixable with the fog of the fog machine.
  3. The device according to claim 1 or 2, characterized in that the fog formed in the fog machine (1) is guided into the suction region of the fan (2, 11, 19), in the overpressure air flow thereof one or more ultrasonic atomizers being provided in the centre of the fan (2, 11, 19) or in the periphery thereof.
  4. The device according to claim 1 or 2, characterised in that the air and fog flows open into the mixing chamber (7, 13, 20) at an acute angle, impinge the water droplets of the ultrasonic atomiser (3, 12, 18), preferably countercurrently, and emerge in the axis of symmetry of the mixing chamber (7, 13, 20) as ground fog therefrom.
  5. The device according to claim 1 or 2, characterised in that the ultrasonic atomiser (3, 12, 18) is arranged in the centre of a fan (2, 11, 19) which blows the air enriched with water into the mixing zone (6) formed as a mixing chamber (7, 13, 20) from which the fog emerges after overcoming an impact wall (16, 21).
  6. The device according to one of claims 1 to 5, characterized in that a cooling device (17) is integrated into the mixing chamber (7, 13, 20) or arranged downstream of the mixing chamber (7, 13, 20), respectively.
  7. The device according to claim 6, characterized in that Peltier elements are provided as cooling means (17) between a plurality of spaced apart impact walls (16, 21) forming a labyrinth with opposite impact walls (16, 21) immersing into the intermediate spaces.
EP16777889.3A 2015-07-31 2016-08-01 Method and device for producing low lying fog Active EP3328513B1 (en)

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SI201630396T SI3328513T1 (en) 2015-07-31 2016-08-01 Method and device for producing low lying fog

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ATA50692/2015A AT517497A1 (en) 2015-07-31 2015-07-31 Method and device for producing ground fog
PCT/AT2016/060023 WO2017020057A1 (en) 2015-07-31 2016-08-01 Method and device for producing low lying fog

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EP3328513A1 EP3328513A1 (en) 2018-06-06
EP3328513B1 true EP3328513B1 (en) 2019-06-19

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US (1) US20180221785A1 (en)
EP (1) EP3328513B1 (en)
AT (1) AT517497A1 (en)
CA (1) CA2994021C (en)
EA (1) EA035243B1 (en)
ES (1) ES2746329T3 (en)
SI (1) SI3328513T1 (en)
WO (1) WO2017020057A1 (en)

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AT519865B1 (en) * 2017-06-16 2018-11-15 Mario Gerard Tomazetich Device for producing effect mist
US10909883B2 (en) * 2019-01-31 2021-02-02 BubblePOP Entertainment/educational system and associated apparatus, methods and uses
WO2020190937A1 (en) * 2019-03-19 2020-09-24 Froggy's Fog, Llc Controlled humidity fog machine

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DE3126952A1 (en) * 1981-07-08 1983-02-10 Zitrone Musik Instrumente + Elektronik Vertriebs GmbH, 8000 München "Smoke generator"
EP0158038B1 (en) * 1984-02-16 1988-06-01 Reinhard Simon Fog generator
FR2592472A1 (en) * 1985-12-31 1987-07-03 Bai Sarl Stand Method and installation for producing a heavy smoke forming a creeping fog
US8755679B2 (en) * 2006-04-05 2014-06-17 Horiba Stec, Co., Ltd. Liquid material vaporizer
US7810742B2 (en) * 2007-05-21 2010-10-12 Zvi Levi Ultrasonic fog generator
US20150013562A1 (en) * 2013-07-12 2015-01-15 Martin Professionals A/S Smoke generator and method of controlling a smoke generation

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CA2994021C (en) 2023-09-26
WO2017020057A1 (en) 2017-02-09
ES2746329T3 (en) 2020-03-05
EA201890388A1 (en) 2018-08-31
US20180221785A1 (en) 2018-08-09
EP3328513A1 (en) 2018-06-06
AT517497A1 (en) 2017-02-15
SI3328513T1 (en) 2019-11-29
CA2994021A1 (en) 2017-02-02
EA035243B1 (en) 2020-05-20

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