EP0084187A1 - Snow gun - Google Patents

Snow gun Download PDF

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Publication number
EP0084187A1
EP0084187A1 EP82200057A EP82200057A EP0084187A1 EP 0084187 A1 EP0084187 A1 EP 0084187A1 EP 82200057 A EP82200057 A EP 82200057A EP 82200057 A EP82200057 A EP 82200057A EP 0084187 A1 EP0084187 A1 EP 0084187A1
Authority
EP
European Patent Office
Prior art keywords
supply line
compressed air
air supply
area
annular space
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.)
Granted
Application number
EP82200057A
Other languages
German (de)
French (fr)
Other versions
EP0084187B1 (en
Inventor
Michael Manhart
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.)
Individual
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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
Application filed by Individual filed Critical Individual
Priority to EP82200057A priority Critical patent/EP0084187B1/en
Priority to DE8282200057T priority patent/DE3269275D1/en
Priority to AT82200057T priority patent/ATE18299T1/en
Priority to US06/425,180 priority patent/US4480788A/en
Priority to FI830106A priority patent/FI73515C/en
Priority to NO830147A priority patent/NO153781C/en
Priority to ES519054A priority patent/ES519054A0/en
Priority to CA000419581A priority patent/CA1198903A/en
Priority to JP58006534A priority patent/JPS58124563A/en
Publication of EP0084187A1 publication Critical patent/EP0084187A1/en
Application granted granted Critical
Publication of EP0084187B1 publication Critical patent/EP0084187B1/en
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/02—Spray pistols; Apparatus for discharge
    • B05B7/04—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge
    • B05B7/0416—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge with arrangements for mixing one gas and one liquid
    • B05B7/0433—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge with arrangements for mixing one gas and one liquid with one inner conduit of gas surrounded by an external conduit of liquid upstream the mixing chamber
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25C—PRODUCING, WORKING OR HANDLING ICE
    • F25C3/00—Processes or apparatus specially adapted for producing ice or snow for winter sports or similar recreational purposes, e.g. for sporting installations; Producing artificial snow
    • F25C3/04—Processes or apparatus specially adapted for producing ice or snow for winter sports or similar recreational purposes, e.g. for sporting installations; Producing artificial snow for sledging or ski trails; Producing artificial snow
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25C—PRODUCING, WORKING OR HANDLING ICE
    • F25C2303/00—Special arrangements or features for producing ice or snow for winter sports or similar recreational purposes, e.g. for sporting installations; Special arrangements or features for producing artificial snow
    • F25C2303/048—Snow making by using means for spraying water
    • F25C2303/0481—Snow making by using means for spraying water with the use of compressed air

Definitions

  • the present invention relates to a snow cannon with a central compressed air supply line and a pressure water supply line which surrounds it and is arranged coaxially to it, the two lines being connected to one another by internal nozzles of the compressed air line, and the compressed air supply line into an interior space delimited in the direction of the compressed air supply at the front by a pierced end piece Spray head opens.
  • the mode of operation of such a snow cannon is essentially that a very low temperature arises in the interior, with condensation nuclei in the form of ice particles forming in the air / water mixture, around which the water is already partially freezing to snow.
  • a waste of energy is all the more painful with snow cannons, since considerable energy has to be applied anyway in order to activate the cold potential of the ambient air as far as possible through a long throw.
  • the present invention is therefore based on the object of providing a snow cannon of the type mentioned at the outset, which allows substantially better mixing of compressed air and pressurized water to be achieved with the same amount of energy, or to bring about a mixing ratio which can be achieved with the previously known snow cannons with a significantly lower amount of energy.
  • the wall thickness of the annular space in the area of the inner nozzles is 1 to 3 times larger than the diameter of an imaginary bore, the area of which corresponds to the total area of all inner bores divided by 3.
  • the compressed air supply line is designated by 1, the compressed air duct 2 passing through it being connected to a compressed air source in a manner not shown.
  • the compressed air duct 2 is closed at its front end by a plug 3.
  • For three lateral inner nozzle holes 4 are provided, which communicate with the compressed-air duct 2, and their geometric axes intersect at an acute angle, preferably of less than 15 0, the geometric axis of the compressed-air duct.
  • a baffle plate 5 is provided, which protrudes outwards perpendicular to the geometric axis of the compressed air duct 2.
  • the outer jacket 6 of the pressurized water supply is arranged coaxially with the compressed air supply line 1, the inner thread 6a of which serves to receive the external thread 7a of the spray head 7.
  • the result of this arrangement is that an annular space 11 is created between the jacket 6 of the pressurized water supply line and the compressed air supply line 1, which will be referred to as an annular space for the sake of simplicity.
  • the distance measured on a radius between the inner wall of the jacket 6 and the outer wall of the compressed air supply line 1 is of course to be equated with the wall thickness of the annular space 11.
  • the dimensions are chosen such that the wall thickness of the annular space 11 in the area of the inner nozzles 4 is twice as large as the diameter of an imaginary hole, the area of which corresponds to the total area of all inner nozzle holes 4 divided by 3. Furthermore, the wall thickness of the annular space 11 in the area of the baffle plate 5 corresponds at least approximately to that in the area of the inner nozzles 4.
  • an inner space 9 is delimited by its inner wall and the end piece 8, which communicates with the outside air via three through holes 10, none of which lie in the geometrical axis of the compressed air supply line 1.
  • the three through holes 10 any number of openings could be provided, but none of them may lie in the geometric axis of the compressed air supply line.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Nozzles (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Lubricants (AREA)
  • Suspension Of Electric Lines Or Cables (AREA)
  • Braking Arrangements (AREA)
  • Materials Applied To Surfaces To Minimize Adherence Of Mist Or Water (AREA)

Abstract

The compressed-air supply line of the snow gun passes through the center of the pressurized-water supply line, thus bounding an annular chamber between them. Inner nozzles forming part of the air line interconnect the two supply lines. The compressed-air supply line opens out into an interior space within the spray head, this space being bounded at the front end by a perforated end piece. For the purpose of reducing the expenditure of energy for a given homogeneity of the air-water mixture, the radial width of the annular chamber in the vicinity of the inner nozzles is from one to three times greater than the diameter of an imaginary bore whose area corresponds to the total area of all inner nozzle bores, divided by three.

Description

Gegenstand vorliegender Erfindung ist eine Schneekanone mit einer zentralen Druckluftzuleitung und einer diese umgebenden und koaxial zu ihr angeordneten Druckwasserzuleitung, wobei die beiden Leitungen durch Innendüsen der Druckluftleitung miteinander verbunden sind, und die Druckluftzuleitung in einen in Richtung der Druckluftzufuhr vorn durch ein durchbohrtes Abschlussstück begrenzten Innenraum eines Sprühkopfes mündet.The present invention relates to a snow cannon with a central compressed air supply line and a pressure water supply line which surrounds it and is arranged coaxially to it, the two lines being connected to one another by internal nozzles of the compressed air line, and the compressed air supply line into an interior space delimited in the direction of the compressed air supply at the front by a pierced end piece Spray head opens.

Die Wirkungsweise einer solchen Schneekanone ist im wesentlichen die, dass im Innenraum eine sehr tiefe Temperatur entsteht, wobei sich im Luft-Wasser-Gemisch Kondensationskerne in Form von Eispartikeln bilden, um welche herum das Wasser teilweise bereits zu Schnee gefriert.The mode of operation of such a snow cannon is essentially that a very low temperature arises in the interior, with condensation nuclei in the form of ice particles forming in the air / water mixture, around which the water is already partially freezing to snow.

Solche vorbekannten Schneekanonen besitzen nun den entscheidenden Nachteil, dass ein genügender Vermischungsgrad zwischen Druckluft und Druckwasser nur unter Aufwand vergleichsweise grosser Energien erreicht werden konnte. Die bei einem gegebenen Energieaufwand ungenügende Vermischung von Luft und Wasser hatte zur Folge, dass der Einsatz von Schneekanonen insbesondere dann in Frage gestellt war, wenn die Energie nicht in genügender Menge zur Verfügung stand.Such previously known snow cannons now have the decisive disadvantage that a sufficient degree of mixing between compressed air and pressurized water could only be achieved with the expenditure of comparatively large energies. The inadequate mixing of air and water for a given amount of energy meant that the use of snow cannons was particularly questioned if the energy was not available in sufficient quantities.

Eine Vergeudung von Energie ist bei Schneekanonen umso schmerzlicher, als ohnehin erheblich Energie aufgebracht werden muss, um durch grosse Wurfweite das Kältepotential der Umgebungsluft möglichst zu aktivieren.A waste of energy is all the more painful with snow cannons, since considerable energy has to be applied anyway in order to activate the cold potential of the ambient air as far as possible through a long throw.

Der vorliegenden Erfindung liegt demzufolge die Aufgabe zugrunde, eine Schneekanone der eingangs genannten Art zu schaffen, welche gestattet, bei gleichem Energieaufwand eine wesentlich bessere Vermischung von Druckluft und Druckwasser zu erzielen, oder aber ein mit den vorbekannten Schneekanonen erreichbares Mischverhältnis mit wesentlich geringerem Energieaufwand herbeizuführen.The present invention is therefore based on the object of providing a snow cannon of the type mentioned at the outset, which allows substantially better mixing of compressed air and pressurized water to be achieved with the same amount of energy, or to bring about a mixing ratio which can be achieved with the previously known snow cannons with a significantly lower amount of energy.

Dies wird erfindungsgemäss dadurch erreicht, dass die Wandstärke der Ringraumes im Bereiche der Innendüsen 1- bis 3mal grösser ist als der Durchmessser einer gedachten Bohrung, deren Fläche der Gesamtfläche aller Innenbohrungen, geteilt durch 3, entspricht.This is achieved according to the invention in that the wall thickness of the annular space in the area of the inner nozzles is 1 to 3 times larger than the diameter of an imaginary bore, the area of which corresponds to the total area of all inner bores divided by 3.

In der Zeichnung ist eine beispielsweise Ausführungsform des Erfindungsgegenstandes schaubildlich dargestellt, wobei zum besseren Verständnis der Sprühkopf von der Druckwasserzuleitung abgeschraubt und ein Stück weit von ihr entfernt dargestellt ist.In the drawing, an example embodiment of the subject matter of the invention is shown diagrammatically, the spray head being unscrewed from the pressurized water supply line and shown a distance from it for better understanding.

Mit 1 ist die Druckluftzuleitung bezeichnet, wobei der sie durchsetzende Druckluftkanal 2 auf nicht weiter dargestellte Weise mit einer Druckluftquelle verbunden ist. Der Druckluftkanal 2 ist an seinem vorderen Ende durch einen Pfropfen 3 abgeschlossen. Dafür sind drei seitliche Innendüsenbohrungen 4 vorgesehen, welche mit dem Druckluftkanal 2 kommunizieren, und deren geometrische Achsen unter einem spitzen Winkel, vorzugsweise von weniger als 150, die geometrische Achse des Druckluftkanals 2 schneiden. Anschliessend an den Pfropfen 3 ist eine Stauscheibe 5 vorgesehen, die senkrecht zur geometrischen Achse des Druckluftkanals 2 nach aussen absteht.The compressed air supply line is designated by 1, the compressed air duct 2 passing through it being connected to a compressed air source in a manner not shown. The compressed air duct 2 is closed at its front end by a plug 3. For three lateral inner nozzle holes 4 are provided, which communicate with the compressed-air duct 2, and their geometric axes intersect at an acute angle, preferably of less than 15 0, the geometric axis of the compressed-air duct. 2 Following the stopper 3, a baffle plate 5 is provided, which protrudes outwards perpendicular to the geometric axis of the compressed air duct 2.

Koaxial zur Druckluftzuleitung 1 ist der Aussenmantel 6 der Druckwasserzufuhr angeordnet, dessen Innengewinde 6a der Aufnahme des Aussengewindes 7a des Sprühkopfes 7 dient. Diese Anordnung hat zur Folge, dass zwischen dem Mantel 6 der Druckwasserzuleitung und der Druckluftzuleitung 1 ein ringförmiger Raum 11 entsteht, der in der Folge der Einfachheit halber als Ringraum bezeichnet wird. Dabei ist natürlich der auf einem Radius gemessene Abstand zwischen der Innenwand des Mantels 6 und der Aussenwand der Druckluftzuleitung 1 der Wandstärke des Ringraumes 11 gleichzusetzen. Des weiteren sind die Abmessungen so gewählt, dass die Wandstärke des Ringraumes 11 im Bereiche der Innendüsen 4 2mal grösser ist als der Druchmesser einer gedachten Bohrung, deren Fläche der Gesamtfläche aller Innendüsenbohrungen 4, geteilt durch 3, entspricht. Des weiteren entspricht die Wandstärke des Ringraumes 11 im Bereiche der Stauscheibe 5 mindestens angenähert derjenigen im Bereiche der Innendüsen 4.The outer jacket 6 of the pressurized water supply is arranged coaxially with the compressed air supply line 1, the inner thread 6a of which serves to receive the external thread 7a of the spray head 7. The result of this arrangement is that an annular space 11 is created between the jacket 6 of the pressurized water supply line and the compressed air supply line 1, which will be referred to as an annular space for the sake of simplicity. The distance measured on a radius between the inner wall of the jacket 6 and the outer wall of the compressed air supply line 1 is of course to be equated with the wall thickness of the annular space 11. Furthermore, the dimensions are chosen such that the wall thickness of the annular space 11 in the area of the inner nozzles 4 is twice as large as the diameter of an imaginary hole, the area of which corresponds to the total area of all inner nozzle holes 4 divided by 3. Furthermore, the wall thickness of the annular space 11 in the area of the baffle plate 5 corresponds at least approximately to that in the area of the inner nozzles 4.

Bei aufgeschraubtem Sprühkopf 7 wird durch dessen Innenwand sowie das Abschlussstück 8 ein Innenraum 9 begrenzt, der über drei Durchbohrungen 10, von denen keine in der geometrischen Achse der Druckluftzuleitung 1 liegt, mit der Aussenluft kommuniziert. Anstelle der drei Durchbohrungen 10 könnte grundsätzlich eine beliebige Mehrzahl von Durchbrechnungen vorgesehen sein, von denen aber keine in der geometrischen Achse der Druckluftzuleitung liegen darf.When the spray head 7 is screwed on, an inner space 9 is delimited by its inner wall and the end piece 8, which communicates with the outside air via three through holes 10, none of which lie in the geometrical axis of the compressed air supply line 1. Instead of the three through holes 10, any number of openings could be provided, but none of them may lie in the geometric axis of the compressed air supply line.

Von der bereits beschriebenen Wirkungsweise der bekannten Schneekanonen unterscheidet sich diejenige des dargestellten Ausführungsbeispieles des Erfindungsgegenstandes dadurch, dass, wie Messungen ergeben haben, der Energieaufwand zur Erreichung einer innigen Vermischung von Druckluft und Druckwasser ein wesentlich geringerer ist.From the already described mode of operation of the known snow cannons, that of the exemplary embodiment of the subject matter of the invention differs in that, as measurements have shown, the energy expenditure for achieving an intimate mixing of compressed air and pressurized water is considerably less.

Claims (6)

1. Schneekanone mit einer zentralen Druckluftzuleitung und einer diese umgebenden und koaxial zu ihr angeordneten Druckwasserzuleitung, durch welche beide Leitungen ein Ringraum begrenzt ist, wobei die beiden Leitungen durch Innendüsen der Druckluftleitung miteinander verbunden sind, und die Druckluftzuleitung in einen in Richtung der Druckluft vorn durch ein durchbohrtes Abschlussstück begrenzten Innenraum eines Sprühkopfes mündet, dadurch gekennzeichnet, dass die Wandstärke des Ringraumes (11) im Bereiche der Innendüsen (4) 1- bis 3mal grösser ist als der Durchmesser einer gedachten Bohrung, deren Fläche der Gesamtfläche aller Innendüsenbohrungen (4), geteilt durch 3, entspricht.1.Snow cannon with a central compressed air supply line and a pressure water supply line surrounding it and arranged coaxially to it, through which both lines delimit an annular space, the two lines being connected to one another by internal nozzles of the compressed air line, and the compressed air supply line in one in the direction of the compressed air at the front A perforated end piece delimits the interior of a spray head, characterized in that the wall thickness of the annular space (11) in the area of the inner nozzles (4) is 1 to 3 times larger than the diameter of an imaginary hole, the area of which is the total area of all inner nozzle holes (4), divided by 3. 2. Schneekanone nach Patentanspruch 1, dadurch gekennzeichnet, dass die geometrischen Achsen der Innendüsen (4) mit der geometrischen Achse der Druckluftzuleitung (1) einen spitzen Winkel bilden2. Snow cannon according to claim 1, characterized in that the geometric axes of the inner nozzles (4) form an acute angle with the geometric axis of the compressed air supply line (1) 3. Schneekanone nach Patentanspruch 2, dadurch gekennzeichnet, dass der spitze Winkel kleiner ist als 15°.3. Snow cannon according to claim 2, characterized in that the acute angle is less than 15 °. 4. Schneekanone nach Patentanspruch 1 gekennzeichnet durch eine im Ringraum (11) angeordnete, mit der Druckluftzuleitung (1) starr verbundene und senkrecht zu deren geometrischer Achse abstehende Stauscheibe (5).4. Snow cannon according to claim 1, characterized by an arranged in the annular space (11), with the compressed air supply line (1) rigidly connected and projecting perpendicular to the geometric axis of the baffle plate (5). 5. Schneekanone nach Patentanspruch 4, dadurch gekennzeichnet, dass die Wandstärke des Ringraumes (11) im Bereiche der Stauscheibe (5) mindestens angenähert derjenigen im Bereiche der Innendüsen (4) entspricht.5. Snow cannon according to claim 4, characterized in that the wall thickness of the annular space (11) in the area of the baffle plate (5) corresponds at least approximately to that in the area of the inner nozzles (4). 6. Schneekanone nach Patentanspruch 5, dadurch gekennzeichnet, dass der Abstand der Vorderseite der Stauscheibe von der Innenseite des Anschlussstückes dem doppelten bis zehnfachen Durchmesser der Innendüse entspricht.6. Snow cannon according to claim 5, characterized in that the distance of the front of the baffle plate from the inside of the connector corresponds to twice to ten times the diameter of the inner nozzle.
EP82200057A 1982-01-18 1982-01-18 Snow gun Expired EP0084187B1 (en)

Priority Applications (9)

Application Number Priority Date Filing Date Title
EP82200057A EP0084187B1 (en) 1982-01-18 1982-01-18 Snow gun
DE8282200057T DE3269275D1 (en) 1982-01-18 1982-01-18 Snow gun
AT82200057T ATE18299T1 (en) 1982-01-18 1982-01-18 SNOW GUN.
US06/425,180 US4480788A (en) 1982-01-18 1982-09-28 Snow gun
FI830106A FI73515C (en) 1982-01-18 1983-01-12 SNOEKANON.
NO830147A NO153781C (en) 1982-01-18 1983-01-17 SNOEKANON.
ES519054A ES519054A0 (en) 1982-01-18 1983-01-17 SNOW CANON DEVICE.
CA000419581A CA1198903A (en) 1982-01-18 1983-01-17 Snow gun
JP58006534A JPS58124563A (en) 1982-01-18 1983-01-18 Snow gun

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP82200057A EP0084187B1 (en) 1982-01-18 1982-01-18 Snow gun

Publications (2)

Publication Number Publication Date
EP0084187A1 true EP0084187A1 (en) 1983-07-27
EP0084187B1 EP0084187B1 (en) 1986-02-26

Family

ID=8189452

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82200057A Expired EP0084187B1 (en) 1982-01-18 1982-01-18 Snow gun

Country Status (9)

Country Link
US (1) US4480788A (en)
EP (1) EP0084187B1 (en)
JP (1) JPS58124563A (en)
AT (1) ATE18299T1 (en)
CA (1) CA1198903A (en)
DE (1) DE3269275D1 (en)
ES (1) ES519054A0 (en)
FI (1) FI73515C (en)
NO (1) NO153781C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0855563A1 (en) 1997-01-23 1998-07-29 LEITNER S.p.A. Snow production cannon

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63120865A (en) * 1986-11-08 1988-05-25 Honda Motor Co Ltd Method and device for regulating ignition timing of engine
US5667137A (en) * 1995-08-31 1997-09-16 Dupre; Herman K. Ice and snow-free snow making tower structure
DE69628185D1 (en) * 1995-11-13 2003-06-18 Snow Economics Inc DEVICE FOR PRODUCING SNOW
US8376245B2 (en) * 2010-01-18 2013-02-19 Ratnik Industries, Inc. Snow making apparatus and method

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2676471A (en) * 1950-12-14 1954-04-27 Tey Mfg Corp Method for making and distributing snow
US2942790A (en) * 1959-01-23 1960-06-28 Gen Electric Air-atomizing liquid spray nozzle
DE1475160A1 (en) * 1963-09-27 1969-01-23 Sames Mach Electrostat Pressurized gas atomizer for spraying liquids
US3836076A (en) * 1972-10-10 1974-09-17 Delavan Manufacturing Co Foam generating nozzle
US4101073A (en) * 1977-08-25 1978-07-18 Spray Engineering Company Two-fluid spray nozzle producing fine atomization of liquid
DE2941052A1 (en) * 1979-10-10 1981-03-12 Heinz 8581 Heinersreuth Fischer Artificial snow generator system - mixes water with compressed air cooled by expansion in convergent-divergent nozzle

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2613737A (en) * 1950-12-09 1952-10-14 Schwietert Gustav Oil burner nozzle
US3650476A (en) * 1968-01-16 1972-03-21 Babcock & Wilcox Co Liquid fuel burner
US3831844A (en) * 1972-02-17 1974-08-27 J Tropeano Apparatus for snow making
US4343434A (en) * 1980-04-28 1982-08-10 Spraying Systems Company Air efficient atomizing spray nozzle
US4383646A (en) * 1980-11-19 1983-05-17 Smith Fergus S Snow making nozzle

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2676471A (en) * 1950-12-14 1954-04-27 Tey Mfg Corp Method for making and distributing snow
US2942790A (en) * 1959-01-23 1960-06-28 Gen Electric Air-atomizing liquid spray nozzle
DE1475160A1 (en) * 1963-09-27 1969-01-23 Sames Mach Electrostat Pressurized gas atomizer for spraying liquids
US3836076A (en) * 1972-10-10 1974-09-17 Delavan Manufacturing Co Foam generating nozzle
US4101073A (en) * 1977-08-25 1978-07-18 Spray Engineering Company Two-fluid spray nozzle producing fine atomization of liquid
DE2941052A1 (en) * 1979-10-10 1981-03-12 Heinz 8581 Heinersreuth Fischer Artificial snow generator system - mixes water with compressed air cooled by expansion in convergent-divergent nozzle

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0855563A1 (en) 1997-01-23 1998-07-29 LEITNER S.p.A. Snow production cannon

Also Published As

Publication number Publication date
ES8402067A1 (en) 1984-01-01
JPS6340588B2 (en) 1988-08-11
ES519054A0 (en) 1984-01-01
DE3269275D1 (en) 1986-04-03
FI73515B (en) 1987-06-30
FI830106L (en) 1983-07-19
NO153781B (en) 1986-02-10
NO153781C (en) 1986-05-28
US4480788A (en) 1984-11-06
FI830106A0 (en) 1983-01-12
FI73515C (en) 1987-10-09
JPS58124563A (en) 1983-07-25
EP0084187B1 (en) 1986-02-26
NO830147L (en) 1983-07-19
CA1198903A (en) 1986-01-07
ATE18299T1 (en) 1986-03-15

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