EP0084187B1 - Snow gun - Google Patents

Snow gun Download PDF

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Publication number
EP0084187B1
EP0084187B1 EP82200057A EP82200057A EP0084187B1 EP 0084187 B1 EP0084187 B1 EP 0084187B1 EP 82200057 A EP82200057 A EP 82200057A EP 82200057 A EP82200057 A EP 82200057A EP 0084187 B1 EP0084187 B1 EP 0084187B1
Authority
EP
European Patent Office
Prior art keywords
supply line
air supply
compressed
nozzles
annular 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
EP82200057A
Other languages
German (de)
French (fr)
Other versions
EP0084187A1 (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
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
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 surrounding it and 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 in one in the direction of the compressed air supply at the front by one of at least three arranged centrally symmetrically End piece penetrated by outer nozzles delimits the interior of a spray head, none of the outer nozzles lying in the geometric axis of the compressed air supply line.
  • 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.
  • the present invention is therefore based on the object to provide a snow cannon of the type mentioned, which allows a much better mixing of compressed air and pressurized water both in the interior of the cannon and after the jet emerges from the cannon (in this the latter case is to mix with the outside air) or to achieve a mixing ratio that can be achieved with the known snow cannons with significantly less energy expenditure.
  • 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 nozzle bores, divided by 3, the geometric axes of the inner nozzles having the geometric one Make an acute angle to the axis of the compressed air supply line.
  • 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.
  • three lateral inner nozzle bores 4 are provided, which communicate with the compressed air duct 2 and whose geometric axes intersect the geometric axis of the compressed air duct 2 at an acute angle, preferably less than 15 °.
  • a baffle plate 5 is provided, which protrudes outwards perpendicularly to the geometric axis of the compressed air duct 2.
  • the distance between the front of the baffle plate and the inside of the end piece corresponds to twice to ten times the diameter of the inner nozzle.
  • 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.
  • This arrangement has the result that an annular space 11 is created between the inner wall of the jacket 6 of the pressurized water supply line or the spray head 7 and the compressed air supply line 1, which for the sake of simplicity is referred to as an annular space.
  • 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 1 to 3 times larger than the diameter of an imaginary bore, the area of which corresponds to the total area of all inner nozzle bores 4 divided by 3. Furthermore, the wall thickness of the annular space II 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 through holes could in principle be provided, but none of which 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 von mindestens drei zentralsymmetrisch angeordneten Aussendüsen durchsetztes Abschlussstück begrenzten Innenraum eines Sprühkopfes mündet, wobei von den Aussendüsen keine in der geometrischen Achse der Druckluftzuleitung liegt.The present invention relates to a snow cannon with a central compressed air supply line and a pressure water supply line surrounding it and 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 in one in the direction of the compressed air supply at the front by one of at least three arranged centrally symmetrically End piece penetrated by outer nozzles delimits the interior of a spray head, none of the outer nozzles lying in the geometric axis of the compressed air supply line.

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.

Insbesondere lassen sich den vorbekannten Schneekanonen gemäss den US-patentschriften 2,676,471 und 4,101,073 sowie der DE-OS 29 41 052 nicht die geringsten Hinweise über die entscheidenden Abmessungen der Wandstärke des Ringraumes sowie der Gesamtfläche aller Innendüsenbohrungen entnehmen. Die beanspruchten Werte wurden durch eingehende Versuche ermittelt, Versuche, bei denen sowohl die Wandstärke des Ringraumes als auch der Durchmesser der Innendüsenbohrungen variiert werden konnten und welche ergaben, dass in Beachtung gewisser Abmessungsverhältnisse, wie sie im kennzeichnenden Teil des patentanspruches 1 erwähnt sind, optimale Ergebnisse erzielt werden können.In particular, the prior art snow cannons according to US Pat. Nos. 2,676,471 and 4,101,073 and DE-OS 29 41 052 do not give the slightest indication of the decisive dimensions of the wall thickness of the annular space and the total area of all inner nozzle bores. The claimed values were determined by in-depth tests, tests in which both the wall thickness of the annular space and the diameter of the inner nozzle bores could be varied and which showed that, taking into account certain dimensional relationships, as mentioned in the characterizing part of patent claim 1, optimal results can be achieved.

Eine Vergeudung von Energie, wie sie beispielsweise bei den Vorrichtungen gemäss den US-patentschriften 2,676,471 und 4,101,073 nicht vermieden werden kann, ist bei Schneekanonen umso schmerzlicher, als ohnehin erhebliche Energie aufgebracht werden muss, um durch grosse Wurfweite das Kältepotential der Umgebungsluft möglichst zu aktivieren.A waste of energy, which cannot be avoided, for example, in the devices according to US Pat. Nos. 2,676,471 and 4,101,073, is all the more painful in 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 large throwing distances.

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 sowohl im Innern der Kanone als auch nach dem Austritt des Strahls aus der Kanone (in diesem letzten Fall handelt es sich um die Vermischung mit der Aussenluft) 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 to provide a snow cannon of the type mentioned, which allows a much better mixing of compressed air and pressurized water both in the interior of the cannon and after the jet emerges from the cannon (in this the latter case is to mix with the outside air) or to achieve a mixing ratio that can be achieved with the known snow cannons with significantly less energy expenditure.

Dies wird erfindungsgemäss dadurch erreicht, dass die Wandstärke des Ringraumes im Bereiche der Innendüsen 1- bis 3mal grösser ist als der Durchmesser einer gedachten Bohrung, deren Fläche der Gesamtfläche aller Innendüsenbohrungen, geteilt durch 3, entspricht, wobei die geometrischen Achsen der Innendüsen mit der geometrischen Achse der Druckluftzuleitung einen spitzen Winkel bilden.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 nozzle bores, divided by 3, the geometric axes of the inner nozzles having the geometric one Make an acute angle to the axis of the compressed air supply line.

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 15°, die geometrische Achse des Druckluftkanals 2 schneiden. In der Wurfrichtung nach den Bohrungen 4 ist eine Stauscheibe 5 vorgesehen, die senkrecht zur geometrischen Achse des Druckluftkanals 2 nach aussen absteht. Dabei entspricht der Abstand der Vorderseite der Stauscheibe von der Innenseite des Abschlussstückes dem doppelten bis zehnfachen Durchmesser der Innendüse.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 this purpose, three lateral inner nozzle bores 4 are provided, which communicate with the compressed air duct 2 and whose geometric axes intersect the geometric axis of the compressed air duct 2 at an acute angle, preferably less than 15 °. In the throwing direction after the bores 4, a baffle plate 5 is provided, which protrudes outwards perpendicularly to the geometric axis of the compressed air duct 2. The distance between the front of the baffle plate and the inside of the end piece corresponds to twice to ten times the diameter of the inner nozzle.

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 der Innenwand des Mantels 6 der Druckwasserzuleitung bzw. des Sprühkopfes 7 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 1- bis 3mal grüsser ist als der Durchmesser einer gedachten Bohrung, deren Fläche der Gesamtfläche aller Innendüsenbohrungen 4, geteilt durch 3, entspricht. Des weiteren entspricht die Wandstärke des Ringraumes II 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. This arrangement has the result that an annular space 11 is created between the inner wall of the jacket 6 of the pressurized water supply line or the spray head 7 and the compressed air supply line 1, which for the sake of simplicity is referred to as an annular space. 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 1 to 3 times larger than the diameter of an imaginary bore, the area of which corresponds to the total area of all inner nozzle bores 4 divided by 3. Furthermore, the wall thickness of the annular space II 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 Durchbohrungen 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 through holes could in principle be provided, but none of which 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 im Innern der Kanone (und nach Eintritt des Strahles in die Umgebungsluft mit dieser) ein wesentlich geringerer ist.From the already described mode of operation of the known snow cannons, that of the illustrated 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 inside the cannon (and after the jet enters the ambient air with it this) is a much lower one.

Claims (5)

1. Snow gun having a central compressed-air supply line and a pressurizedwater supply line surrounding the latter and disposed coaxially therewith, by which two lines an annular chamber is bounded, the two lines being connected to one another by inner nozzles of the compressed-air supply line, and the compressed-air supply line opening out into an interior space of a spray head, which interior space is bounded at the front, in the direction of the compressed-air supply, by an end piece through which at least three centrosymmetrically disposed outer nozzles pass, none of the outer nozzles being situated in the geometrical axis of the compressed-air supply line, characterized in that the wall thickness of the annular chamber (11) in the region of the inner nozzles (4) is 1 to 3 times greater than the diameter of an imaginary bore, the area of which corresponds to the total area of all inner nozzle bores (4) divided by 3, the geometrical axes of the inner nozzles (4) forming an acute angle with the geometrical axis of the compressed-air supply line (1).
2. Snow gun according to patent claim 1, characterized in that the acute angle is less than 15°.
3. Snow gun according to patent claim 1, characterized by a baffle plate (5) disposed in the annular chamber (11), rigidly connected to the compressedair supply line (1), and projecting perpendicularly to the geometrical axis thereof.
4. Snow gun according to patent claim 3, characterized in that the wall thickness of the annular chamber (11) in the region of the baffle plate (5) corresponds at least approximately to that in the region of the inner nozzles (4).
5. Snow gun according to patent claim 4, characterized in that the distance between the front of the baffle plate and the inner side of the end piece (8) 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 EP0084187A1 (en) 1983-07-27
EP0084187B1 true 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)

Families Citing this family (5)

* 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
IT1289191B1 (en) 1997-01-23 1998-09-29 Leitner Spa CANNON FOR THE PRODUCTION OF SNOW
US8376245B2 (en) * 2010-01-18 2013-02-19 Ratnik Industries, Inc. Snow making apparatus and method

Family Cites Families (11)

* 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
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
GB1104461A (en) * 1963-09-27 1968-02-28 Sames Mach Electrostat Pneumatic atomizer for spraying liquids
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
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
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

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
EP0084187A1 (en) 1983-07-27
US4480788A (en) 1984-11-06
FI830106A0 (en) 1983-01-12
FI73515C (en) 1987-10-09
JPS58124563A (en) 1983-07-25
NO830147L (en) 1983-07-19
CA1198903A (en) 1986-01-07
ATE18299T1 (en) 1986-03-15

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