EP2008700B1 - Device for scenographic use for production of artificial snow - Google Patents

Device for scenographic use for production of artificial snow Download PDF

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Publication number
EP2008700B1
EP2008700B1 EP08104484A EP08104484A EP2008700B1 EP 2008700 B1 EP2008700 B1 EP 2008700B1 EP 08104484 A EP08104484 A EP 08104484A EP 08104484 A EP08104484 A EP 08104484A EP 2008700 B1 EP2008700 B1 EP 2008700B1
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EP
European Patent Office
Prior art keywords
tank
nozzle
foam
artificial snow
scenographic
Prior art date
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Application number
EP08104484A
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German (de)
French (fr)
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EP2008700A1 (en
Inventor
Ivano Petroselli
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.)
Frisa Di Amichetti & Petroselli SNC
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Frisa Di Amichetti & Petroselli SNC
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Application filed by Frisa Di Amichetti & Petroselli SNC filed Critical Frisa Di Amichetti & Petroselli SNC
Publication of EP2008700A1 publication Critical patent/EP2008700A1/en
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Classifications

    • 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
    • A63J5/028—Devices for making snow effects

Definitions

  • the present patent application for industrial invention relates to a device for scenographic use able to produce artificial snow.
  • polystyrene fragments are collected in a recovery tank from which they are re-conveyed by means of forced ventilation through a suitable pipe into the aforementioned container for a new downward falling cycle.
  • the current technique is most of all impaired by the negative electrostatic magnetism phenomenon suffered by the aforementioned polystyrene fragments.
  • the small polystyrene fragments are extremely sensitive to the effects of air draughts that may easily cause their uncontrolled dispersion during the falling by gravity, thus preventing them from being collected into the recovery tank from which a new operation cycle is to be started.
  • Each of these machines is provided with a tank that contains soapy water, which dispenses a thin flow of soapy water by means of a suitable electromagnetic valve towards a fabric cap inserted onto a metal union; in brief, it can be said that the soapy water progressively impregnates the fibres of the fabric cap.
  • a centrifugal fan actuated by a brush motor is installed at the opposite end of the union, which is designed to generate a powerful blast of air that is directed onto the said fabric cap from the back to the front, passing through its fibres.
  • the source of the very high noise level is to be identified in the powerful fan unit that generates the blast of air used to "beat up” the foam.
  • US2,571,069 discloses an apparatus for forming and dispensing artificial snow flakes including a foam material tank, an air compressor, a pipe for supplying water under pressure and a series of conduits for connecting the water pipe, the air compressor and the tank.
  • the new device of the invention avoids the production of undesired spots of foam and most of all is able to operate very silently, thus being compatible with all types of sets.
  • the "ready" foam that comes out from the tank must be conveyed towards a dispenser pipe; however, it must be noted that such a function can be advantageously entrusted to a small noiseless induction motor, due to the extremely light weight of the foam.
  • figure 1 is a block diagram of the device of the invention.
  • the device of the invention comprises a tank (1) designed to be filled with soapy water, which is provided on the bottom with a microperforated nozzle (2) fed by the air produced by a membrane micropump (3) situated in external position on the tank (1).
  • the air dispensed by the nozzle (2) causes a sort of vorticous mixing of the soapy water, thus producing foam that tends to fill the entire volume of the tank (1).
  • the foam is progressively poured outside through a suitable nozzle (4) on the upper wall (1 a) of the nozzle (4).
  • the foam that progressively comes out of the nozzle (4) receives the blast of air generated by a centrifugal fan with very noiseless induction motor (5) installed on the back of the tank (1).
  • the foam that comes out of the tank (1) is very light and therefore can be conveyed by a weak air flow towards the area that is to receive the artificial snow.
  • the operation modes of the device of the invention ensure that the artificial snow is dry and therefore very light and vaporous.
  • Additional advantages of the device of the invention refer to its capability to vary the size of the snow flakes by simply adjusting the load of the air flow received by the foam when it comes out of the tank, as well as to the capability to adjust the intensity of the artificial snow falling by suitably adjusting the power of the micropump.
  • the device of the invention is also appreciated because of lower production costs compared to traditional foam machines, due to elimination of the fan unit with brush motor in external position on the tank, of the relevant electromagnetic valves, conduits and taps that are typical of the prior technique.
  • the new device of the invention is able to produce a higher quantity of artificial snow than foam machines with the same amount of soapy water, thus ensuring a higher operation autonomy.

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  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Toys (AREA)

Abstract

Device for scenographic use for production of artificial snow, characterised in that: - a tank for soapy water (1) with an outflow nozzle (4) in one of the lateral walls or in the upper wall; - a microperforated nozzle (2) installed inside the tank (1) designed to provide pressurised air produced by a suitable generator (3) in external position on the tank (1); - a device (5) in external position on the tank (1) designed to generate an air flow incident to the longitudinal axis of the outflow nozzle (4).

Description

  • The present patent application for industrial invention relates to a device for scenographic use able to produce artificial snow.
  • The peculiarities and advantages of the said device will become evident after a short description of the prior technique and relevant inconveniences.
  • The so-called "falling polystyrene" technique is currently used to create a scenographic effect that simulates the falling of snow.
  • It is a closed circuit system in which polystyrene in small granules or fragments falls by gravity from a container positioned at a suitable height above the set.
  • In such a system the polystyrene fragments are collected in a recovery tank from which they are re-conveyed by means of forced ventilation through a suitable pipe into the aforementioned container for a new downward falling cycle.
  • Such a technology is however impaired by some considerable inconveniences.
  • In addition to large volume and difficult installation and set up of the said closed circuit system, the current technique is most of all impaired by the negative electrostatic magnetism phenomenon suffered by the aforementioned polystyrene fragments.
  • Such a phenomenon tends to negatively affect the falling of the "faked snow" by gravity, since the said polystyrene fragments are easily attracted by the surrounding objects and attached to them.
  • Moreover, the small polystyrene fragments are extremely sensitive to the effects of air draughts that may easily cause their uncontrolled dispersion during the falling by gravity, thus preventing them from being collected into the recovery tank from which a new operation cycle is to be started.
  • As an alternative solution to this empirical technology, devices known in the field as "foam machines" are used.
  • Each of these machines is provided with a tank that contains soapy water, which dispenses a thin flow of soapy water by means of a suitable electromagnetic valve towards a fabric cap inserted onto a metal union; in brief, it can be said that the soapy water progressively impregnates the fibres of the fabric cap.
  • A centrifugal fan actuated by a brush motor is installed at the opposite end of the union, which is designed to generate a powerful blast of air that is directed onto the said fabric cap from the back to the front, passing through its fibres.
  • In such a way, the powerful blast of air "transforms" the soapy water laid on the fabric into a vaporous foam that reproduces the effect of snow falling by gravity.
  • Also a similar foam machine is impaired by significant inconveniences, the first of all being represented by the very high noise level, which makes it impossible to use in situations where silence is required.
  • Reference is mainly made to crib scenes, and also to many other theatre situations.
  • The source of the very high noise level is to be identified in the powerful fan unit that generates the blast of air used to "beat up" the foam.
  • Moreover, it has been noted that in such a type of machines it would be impossible to reduced the noise level considerably, since such a result could only be obtained with using a fan unit with limited power that would not be able to produce the aforementioned "transformation" of soapy water into foam.
  • An additional functional limit of the said foam machines consists in the abundant production of spots of foam on the surface where they operate.
  • US2,571,069 discloses an apparatus for forming and dispensing artificial snow flakes including a foam material tank, an air compressor, a pipe for supplying water under pressure and a series of conduits for connecting the water pipe, the air compressor and the tank.
  • A careful examination of the problems that are typical of the prior technique has led to designing the new device of the invention, which is able to produce artificial snow of excellent quality without the aforementioned inconveniences.
  • The new device of the invention avoids the production of undesired spots of foam and most of all is able to operate very silently, thus being compatible with all types of sets.
  • Within the new machine of the invention, which produces artificial snow from soapy water, the idea of producing foam outside the storage tank (due to the strong acceleration given to the air towards the fabric impregnated with soapy water) has been discarded and the decision to produce a similar foam inside the storage tank of soapy water by means of a suitable membrane micropump has been taken.
  • Such an innovative solution, which will be better described below, has permitted to eliminate the traditional fan units with brush motors that were the exclusive cause of the unacceptable noise level of traditional machines.
  • In fact, also in the device of the invention, the "ready" foam that comes out from the tank must be conveyed towards a dispenser pipe; however, it must be noted that such a function can be advantageously entrusted to a small noiseless induction motor, due to the extremely light weight of the foam.
  • For purposes of clarity the description of the present invention continues with reference to the enclosed drawing, which is intended for purposes of illustration only and not in a limiting sense, wherein figure 1 is a block diagram of the device of the invention.
  • With reference to the said figure, the device of the invention comprises a tank (1) designed to be filled with soapy water, which is provided on the bottom with a microperforated nozzle (2) fed by the air produced by a membrane micropump (3) situated in external position on the tank (1).
  • The air dispensed by the nozzle (2) causes a sort of vorticous mixing of the soapy water, thus producing foam that tends to fill the entire volume of the tank (1).
  • Once the volume has been filled up entirely, the foam is progressively poured outside through a suitable nozzle (4) on the upper wall (1 a) of the nozzle (4).
  • In such a context, the foam that progressively comes out of the nozzle (4) receives the blast of air generated by a centrifugal fan with very noiseless induction motor (5) installed on the back of the tank (1).
  • The foam that comes out of the tank (1) is very light and therefore can be conveyed by a weak air flow towards the area that is to receive the artificial snow.
  • It can otherwise be said that the foam coming out of the tank is subjected to a sort of delicate spraying by means of the fan with induction motor (5), which is able to create artificial snow flakes that fall by gravity in a very similar mode as natural snow.
  • The operation modes of the device of the invention ensure that the artificial snow is dry and therefore very light and vaporous.
  • These conditions guarantee that the artificial snow produced by the device of the invention tends to dissolve completely when touching the ground, without causing spots of humidity on the ground.
  • Additional advantages of the device of the invention refer to its capability to vary the size of the snow flakes by simply adjusting the load of the air flow received by the foam when it comes out of the tank, as well as to the capability to adjust the intensity of the artificial snow falling by suitably adjusting the power of the micropump.
  • It is equally important to note that the device of the invention is also appreciated because of lower production costs compared to traditional foam machines, due to elimination of the fan unit with brush motor in external position on the tank, of the relevant electromagnetic valves, conduits and taps that are typical of the prior technique.
  • Finally, it must be noted that the new device of the invention is able to produce a higher quantity of artificial snow than foam machines with the same amount of soapy water, thus ensuring a higher operation autonomy.

Claims (3)

  1. Device for scenographic use for production of artificial snow, comprising:
    - a tank for soapy water (1) with an outflow nozzle (4) in one of the lateral walls or in the upper wall; and
    - a device (5) in external position on the tank (1) designed to generate an air flow,
    characterised in that it further comprises
    - a microperforated nozzle (2) installed inside the tank (1) designed to provide pressurised air produced by a suitable generator (3) in external position on the tank (1), and
    said device (5) in external position on the tank (1) is arranged so that to generate an air flow incident to the longitudinal axis of the outflow nozzle (4).
  2. Device as claimed in claim 1, characterised in that the external generator (3) that feeds the dispenser nozzle (2) consists in a membrane micropump.
  3. Device as claimed in claim 1, characterised in that the device (5) used to produce a flow air consists in a centrifugal fan with induction motor.
EP08104484A 2007-06-28 2008-06-19 Device for scenographic use for production of artificial snow Active EP2008700B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT000132A ITMC20070132A1 (en) 2007-06-28 2007-06-28 DEVICE FOR SCENOGRAPHIC USE FOR THE PRODUCTION OF ARTIFICIAL SNOW.

Publications (2)

Publication Number Publication Date
EP2008700A1 EP2008700A1 (en) 2008-12-31
EP2008700B1 true EP2008700B1 (en) 2010-03-10

Family

ID=39791113

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08104484A Active EP2008700B1 (en) 2007-06-28 2008-06-19 Device for scenographic use for production of artificial snow

Country Status (5)

Country Link
EP (1) EP2008700B1 (en)
AT (1) ATE460215T1 (en)
DE (1) DE602008000776D1 (en)
ES (1) ES2342031T3 (en)
IT (1) ITMC20070132A1 (en)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE488567C (en) * 1930-01-06 Nikolaus Sandor Dipl Ing Scenic device for the representation of snow landscapes
US2594725A (en) * 1948-01-06 1952-04-29 Herbert E Britt Method of producing artificial snow
US2571069A (en) 1948-03-12 1951-10-09 Russell M Shearman Artificial snow machine
US6868691B2 (en) * 2000-09-18 2005-03-22 Francisco Guerra Illusionary snow apparatus with reduced noise
US20030024956A1 (en) * 2001-08-02 2003-02-06 Gary Crawford Confetti, theatrical snow, and fog launching mechanism and system

Also Published As

Publication number Publication date
ITMC20070132A1 (en) 2008-12-29
DE602008000776D1 (en) 2010-04-22
ATE460215T1 (en) 2010-03-15
ES2342031T3 (en) 2010-06-30
EP2008700A1 (en) 2008-12-31

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