WO2009139265A1 - Canon à neige - Google Patents

Canon à neige Download PDF

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Publication number
WO2009139265A1
WO2009139265A1 PCT/JP2009/057727 JP2009057727W WO2009139265A1 WO 2009139265 A1 WO2009139265 A1 WO 2009139265A1 JP 2009057727 W JP2009057727 W JP 2009057727W WO 2009139265 A1 WO2009139265 A1 WO 2009139265A1
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WO
WIPO (PCT)
Prior art keywords
pipe
fluid
flow path
compressed air
water
Prior art date
Application number
PCT/JP2009/057727
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English (en)
Japanese (ja)
Inventor
彦六 杉浦
Original Assignee
シンユー技研株式会社
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 シンユー技研株式会社 filed Critical シンユー技研株式会社
Publication of WO2009139265A1 publication Critical patent/WO2009139265A1/fr

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Classifications

    • 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
    • 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
    • B05B7/0483—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 gas and liquid jets intersecting in the mixing chamber
    • 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
    • B05B7/0491—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 the liquid and the gas being mixed at least twice along the flow path of the liquid
    • 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
    • B05B7/0441—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 liquid surrounded by an external conduit of gas upstream the mixing chamber
    • B05B7/0475—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 liquid surrounded by an external conduit of gas upstream the mixing chamber with means for deflecting the peripheral gas flow towards the central liquid flow
    • 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 efficiently generates atomized gas, in particular artificial snow, for spraying from a turbo nozzle a finely divided ultrafine fluid obtained by further colliding a compressed fluid with a fine fluid formed by mixing compressed air and pressurized water. It is about snow guns.
  • the mixing element attached to the snow gun is a two-fluid nozzle type in which a pipe for mixing compressed air and pressurized water is doubled and a mixing chamber in which compressed air and pressurized water are provided to instantaneously mix to generate atomized fluid.
  • a static mixer type is widely known.
  • an inner pipe for feeding pressurized water is arranged in the center, an outer pipe for feeding compressed air is provided outside the inner pipe, and the outlet of the outer pipe is narrowed to the outlet diameter of the inner pipe. The outlet is narrowed, the pressure of the compressed air is increased, the compressed air is collided and stirred from the outside into the central water stream, and the atomized fluid is injected from the outlet (for example, see Patent Document 1).
  • the compressed air and pressurized water sent in separate circuits are stirred and mixed in the mixing chamber to generate atomized fluid, and the atomized fluid is mixed.
  • the atomized fluid mixed by the static mixer type mixing element has higher fluidity of compressed air than moisture contained in the atomized fluid. Compressed air is instantaneously gathered outside the jet outlet and adiabatically expands. There was a problem that the generation efficiency of artificial snow was reduced due to the increase of the number of artificial snows.
  • the water molecules are refined and are sent to the small-mouthed nozzle, so that the water is forcibly pushed from the wide area to the narrow area and the water is recombined. Snow generation efficiency has been reduced.
  • the fine particle fluid is easily separated into water and air over time due to the influence of gravity.
  • the fine particle fluid mixed by the static mixer is pushed upward by light compressed air near the jet outlet, and heavy water molecules There is a problem that the mixed atomized fluid does not become uniform, such as being easily gathered on the lower side.
  • the mixing element is sprayed with the mixing element installed at an angle close to the horizontal direction from about 45 degrees, so the atomized fluid is affected by gravity as described above.
  • the present invention does not generate atomized fluid by raising the pressure of compressed air using a large compressor and forcibly stirring and mixing, but supplies air to the mixing element, that is, supplied compressed air or Providing a snow gun with a turbo nozzle that generates a super atomized fluid consisting of more finely divided water molecules by injecting a portion of pressurized water into the atomized fluid again, colliding with water molecules, stirring and mixing
  • the purpose is to do.
  • the compressed air and pressurized water are stirred and mixed in the snow gun body 1 provided with the jet port 9 on the downstream side of the mixing element 3 for mixing compressed air and pressurized water from the air channel 4 and the water channel 5.
  • a turbo nozzle 20 for injecting a micronized fluid n generated by colliding with a micronized fluid m with a pressure fluid s and pulverizing and subdividing again is provided at the jetting port 9.
  • the mixing element 3 is provided with one end of a compressed air pipe X and a pressurized water pipe Y accommodated in the snow gun body 1 and connected to a mixing channel 6 provided downstream of the air channel 4 and the water channel 5.
  • a spout 9 for injecting the atomized fluid m in which the compressed air and the pressurized water are mixed is formed on the downstream side of the chamber 7, and is divided from the compressed second air flow path X or the pressurized second water flow path Y.
  • the supercharged pipe 23 for injecting the pressurized fluid s is connected to the extending cylinder 21 of the turbo nozzle 20 and is injected from the injection port 22 of the extending cylinder.
  • the turbo nozzle 20 has one end connected to the downstream side of the jetting port 9 of the mixing element 3 and allows the atomized fluid m ejected from the jetting port to flow, and the inside of the drawing cylinder 21 At least one supercharged pipe 23 that collides with the atomized fluid m flowing through the compressed air pipe X or the pressurized water pipe Y with the pressurized fluid pipe S, and one end connected to the supercharged pipe 23 and the other end. And a connecting pipe 26 for supplying a pressurized fluid s from either one of the compressed air pipe X and the pressurized water pipe Y connected to the jet port 9.
  • the extending cylinder 21 constituting the turbo nozzle 20 includes a mounting position of the supercharging pipe 23 and a distance A to the jet port 9 of the mixing element 3 and a mounting position of the supercharging pipe 23 and the extending cylinder 21.
  • the distance B to the injection port 22 is longer than the diameter e of the supercharged pipe 23, and the inner diameter c of the elongated cylinder 21 is larger than the inner diameter f of the supercharged pipe 23.
  • at least one or more of the supercharged pipes 23a connected to the extending cylindrical body 21 of the turbo nozzle 20 are attached to each other in parallel or at an arbitrary angle so that the pressure fluids s injected from the supercharged pipes 23a do not collide with each other.
  • the second mixing element 33 is formed in a double manner by arranging the second water flow path 34 for feeding pressurized water in the center and the second air flow path 35 for feeding compressed air on the outside.
  • a narrowed portion 36 narrowed to the vicinity of the outlet of the second water flow channel 34 is formed at the end of the second air flow channel 35 in the vicinity where the pressurized water merges, and fine particles in which pressurized water and compressed air are mixed downstream of the throttle portion.
  • a jet outlet 37 for jetting the atomizing fluid m is provided, and the super atomized fluid n generated by being divided from the second air channel 35 or the second water channel 34 and colliding with the atomizing fluid m is injected.
  • the turbo nozzle 20 is provided at the jet outlet 37.
  • the third turbo nozzle 50 attached to the ejection port 37 of the second mixing element 33 has one end connected to the ejection port 37 of the mixing element 33 and the elongated cylinder 51 for circulating the atomized fluid m, and the stretching.
  • the supercharging flow path 53 which connects the horizontal flow path 54 and the 1st vertical flow path 55 which supply the pressure fluid s provided in the cylinder is provided.
  • the turbo nozzles 20, 40, 50 to the jet nozzles 9, 37 of the mixing elements 3, 33, the atomized fluid m is sheared, stirred, and mixed again to achieve uniform and ultra-fine atomization.
  • Artificial snow can be generated efficiently by generating fluid n and spraying it from the jet nozzle, and since no large compressor is required, noise is quiet, compressed air consumption is low, and power consumption is low. It is very economical because there are few.
  • FIG. 1 is a plan view of a snow gun according to the present invention. It is the same side view. It is sectional drawing which shows the use condition which attached the turbo nozzle to the mixing element. It is sectional drawing which shows the use condition which attached the turbo nozzle to the mixing element which has a chamber. It is a principal part expanded sectional view of a turbo nozzle. It is sectional drawing of the turbo nozzle which attached the some supercharging pipe in parallel. It is sectional drawing of the turbo nozzle which attached the supercharged pipe inclining to the extending
  • FIG. 4 is a cross-sectional view of a turbo nozzle in which a plurality of supercharged pipes are inclined in parallel and attached to an extension cylinder. It is sectional drawing of the state which attached the turbo nozzle to the 2nd mixing element.
  • FIG. 1 is a plan view of a snow gun according to the present invention
  • FIG. 2 is a side view thereof
  • FIG. 3 is a sectional view showing a use state in which a turbo nozzle is attached to a mixing element
  • FIG. 5 is an enlarged sectional view of a main part of the turbo nozzle
  • FIG. 6 is a sectional view of the turbo nozzle in which a plurality of supercharging pipes are attached in parallel
  • FIG. 7 is a cross-sectional view of a turbo nozzle in which a supercharged pipe is inclined and attached to an extending cylinder
  • FIG. 8 is a cross-sectional view of a turbo nozzle in which a plurality of supercharged pipes are inclined in parallel and attached to an extending cylinder
  • FIG. 9 is a cross-sectional view of a state where a turbo nozzle is attached to the second mixing element.
  • a snow gun body 1 attached to an artificial snowfall device (not shown) has a compressed second air flow channel X and a pressurized second water flow channel Y for sending compressed air and pressurized water to one end, and compressed air and pressurized water inside.
  • the mixing element 3 for stirring and mixing is provided, and the turbo nozzle 20 or the second turbo nozzle 40 is attached to the jet port 9 provided at the tip of the mixing element.
  • the mixing element (static mixer type) 3 includes an air flow path 4 connected to a compressed pipe X to which compressed air is fed, and a pressurized second water flow path on the other side.
  • a water flow channel 5 communicating with Y is provided, a substantially T-shaped, that is, a mixed water channel 6 having an enlarged diameter downstream is formed on the downstream side of each flow channel, and a large-diameter chamber 7 is provided downstream of the mixed water channel. is there.
  • An agitation inner cylinder 8 having a U-shaped cross section with the mixing channel 6 side opened is attached to the chamber 7.
  • the inner wall of the stirring inner cylinder 8 and the inner wall of the chamber 7 are provided with a number of recesses (not shown) for efficiently reflecting and agitating and mixing the inflowing pressure fluid.
  • a jet port 9 is formed at an arbitrary position on the downstream side wall surface of the chamber 7, and a turbo nozzle 20 is provided outside the jet port 9.
  • the mixing element 3 is provided with a chamber chamber 12 through a connection port 11 provided on the downstream side of the chamber 7, and an ejection port 13 is formed at an eccentric position on the downstream side wall surface of the chamber chamber. is there.
  • this jet port 13 is provided at an eccentric position of the chamber chamber 12, the atomized fluid in the chamber chamber further causes a turbulent flow phenomenon. To refine.
  • the turbo nozzle 20 is provided with an extending cylinder 21 having the same inner diameter as the outlet of the mixing element 3 on the outer side of the outlet 9 of the mixing element 3, and in the middle of the extending cylinder.
  • a supercharging pipe 23 is connected to supply a pressure fluid (water or air) s that externally shears and agitates and mixes the atomized fluid m flowing while stirring and mixing in the drawing cylinder, and the supercharging
  • a connecting pipe 26 is connected to one of the compressed air pipe X and the pressurized water pipe Y, one end of which is connected to the pipe and the other end is connected to the mixing element 3.
  • the connecting pipe 26 is provided with an opening / closing valve 28 for opening and closing the flow path, but this is not always necessary.
  • the frictional resistance of the atomized fluid m flowing through the extending cylinder decreases. Is preventing.
  • the total length of the extending cylinder 21 is such that the attachment position of the supercharging pipe 23 and the distance A to the spout 9 of the mixing element 3, the position of the supercharging pipe 23, and the extension cylinder 21.
  • the distance B to the injection port 22 provided at the tip is formed to be equal to or slightly longer than the diameter e of the supercharged pipe 23 and is at least three times or less, but is not limited to three times.
  • the inner diameter c of the elongated cylinder 21 within at least three times the inner diameter f of the supercharged pipe 23, it is possible to uniformly stir and mix with the pressure fluid s from the supercharged pipe.
  • the generated ultra-fine atomized fluid n can be efficiently ejected outward from the ejection port without being re-separated, but is not necessarily limited to within 3 times.
  • the micronized fluid n generated by collision and stirring and mixing flows in the B direction, the micronized fluid n undergoes a recombination action of water particles over time (distance).
  • the distance B is too long, water molecules are recombined and then released under atmospheric pressure, so the effect of artificial snowfall by adiabatic expansion is halved. Accordingly, when the atomized fluid m flowing in from the A direction and the pressure fluid s injected from the supercharging pipe 23 are mixed by stirring, the ultra atomized fluid n generated in the B direction causes recombination of water molecules. It is possible to efficiently generate artificial snow by discharging in the previous ultrafine particle state (distance B).
  • the pressure fluid s injected from the supercharged pipe 23 into the extending cylinder 21 divides 10 to 40% of the amount of water flowing through the pressurized water pipe Y when, for example, pressurized water is used as the pressure fluid. To use. When compressed air is used, 10 to 20% of the amount of air flowing through the compressed air pipe X is divided and used. It is preferable that the flow rate of the divided pressure fluid is 6 m / s for pressurized water and 25 m / s for compressed air.
  • the pressure fluid s is jetted from the supercharged pipe 23 and collides with the atomizing fluid m flowing through the stretched cylindrical body 21 to subdivide the water particles, whereby the water molecules are further refined and the ultrafine particles are obtained.
  • a fluid (100 ⁇ m or less) n By generating a fluid (100 ⁇ m or less) n and spraying it from the jet port 9, more artificial snow can be snowed with a small amount of compressed air, so that power consumption is small and economical.
  • smoke smoldering in a mountain is about 10 ⁇ in size, and if water particles of the same size are generated with a snow gun to form snow, the particles are too small to diffuse and scatter to places other than the predetermined slope. Therefore, about 100 ⁇ is preferable.
  • FIG. 5 shows a pressure fluid s by connecting a single supercharged pipe 23 in a direction perpendicular to the axial center direction of the elongated cylinder 21. Sprays the central part of the atomized fluid m flowing through the extending cylinder 21 from a right angle direction, and further subdivides the water particles by utilizing the expansion and contraction action when the compressed fluid s returns to atmospheric pressure with a bursting force. As shown in the arrow, the pressure fluid s can collide with the wall surface on the opposite side of the supercharged pipe 23 of the stretched cylinder 21 and bounce back to stir and mix the atomized fluid m again. .
  • a plurality of supercharging pipes 23 a may be mounted side by side at right angles to the axial direction of the extending cylinder 21.
  • the injection amount of the pressure fluid s flowing from the outside into each supercharged pipe 23 is increased, and gathers near the center of the atomized fluid m flowing through the elongated cylinder 21.
  • the water molecules are subdivided by colliding an intense pressure fluid s against the high-density water molecules.
  • the smaller the water particles of the atomized fluid m sprayed from the downstream injection port 22 the more effective freezing can be achieved by adiabatic expansion, so that the subdivided water molecules are blown into the air. By touching air having an adiabatic expansion effect, ice can be efficiently frozen to generate artificial snow.
  • At least one supercharged pipe 23b may be attached to the upstream side or the downstream side, preferably the upstream side, of the extending cylinder 21 with a slight angle. In this case, it is preferable to mount it at an angle of 30 degrees or less.
  • the flow rate of the atomized fluid m flowing through the elongated cylinder 21 flows down at a high speed of 60 to 100 m / s, or higher, if the outlet of the supercharged pipe 23b is inclined and attached upstream, It is possible to make the pressure fluid s ejected from the supercharged pipe collide with the atomizing fluid m, and to mix and mix by shearing and stirring. If the supercharged pipe 23b is attached orthogonally to the extending cylinder 21 or is inclined to the downstream side, the distance B to the injection port 22 is short, so that the pressure fluid s may immediately flow down in the direction of the injection port. .
  • the pressure fluid s in the supercharged pipe 23b is attached to the atomized fluid m located upstream from the position of the supercharged pipe 23b by attaching the pressure fluid s at an angle so that the pressure fluid s is jetted upstream. It is possible to efficiently generate artificial snow by further subdividing the particles of the super atomized fluid n that are collided and efficiently stirred and mixed in the extending cylinder 21 and sprayed from the injection port 22. It goes without saying that the cross-sectional mouth shape of the extending cylindrical body 21 constituting the turbo nozzle 20 may be formed into an elliptical shape other than a circular shape or other shapes.
  • FIG. 9 shows an embodiment in which the turbo nozzle 20 is attached to the outlet 37 of the second mixing element 33.
  • the second mixing element 33 is formed at the center of a double pipe formed on the same axis. It consists of a second water passage 34 for sending pressure water and a second air passage 35 for sending compressed air to the outside of the water passage. One end of each of the water passage 34 and the second air passage 35 is compressed. It is connected to an air pipe X and a pressurized water pipe Y.
  • a compressed portion 36 is formed by forming a constricted portion 36 in which the outlet end of the second air flow path 35 of the second mixing element 33 is constricted to the vicinity of the outlet diameter of the second water flow passage 34, and the spout 37 is narrowed by the constricted portion.
  • the atomized fluid m which is a mixture of air and water, is sprayed from the outside to the water column of the central second water flow path 34.
  • the turbo nozzle 40 attached to the spout 37 of the second mixing element 33 is the same as that attached to the mixing element 20 described above.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Nozzles (AREA)

Abstract

De la neige artificielle économique et efficace est fabriquée par fragmentation supplémentaire d’un fluide pulvérisé généré par le mélange d’air comprimé et d’eau sous pression. Une extrémité d’un second trajet d’écoulement d’air comprimé (X) et une extrémité d’un second trajet d’écoulement d’eau sous pression (Y) sont raccordées respectivement à un trajet d’écoulement d’air (4) et à un trajet d’écoulement d’eau (5) d’un élément de mélange (3) logé dans un corps principal de canon à neige (1). Un orifice d’injection (9) destiné à injecter un fluide pulvérisé mélangé (m) est disposé sur le côté aval d’une chambre (7) formée dans un trajet d’écoulement de mélange (6) disposé sur le côté aval du trajet d’écoulement d’air et du trajet d’écoulement d’eau. Une buse turbo (20) destinée à injecter un fluide ultra-pulvérisé (n) mélangé par broyage/agitation du fluide vaporisé injecté (m) à nouveau par un fluide sous pression (s) dévié du second trajet d’écoulement d’air comprimé (X) ou du second trajet d’écoulement d’eau sous pression (Y) est disposée à l’extérieur de l’orifice d’injection.
PCT/JP2009/057727 2008-05-16 2009-04-17 Canon à neige WO2009139265A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2008-130139 2008-05-16
JP2008130139A JP2009276030A (ja) 2008-05-16 2008-05-16 スノーガン

Publications (1)

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WO2009139265A1 true WO2009139265A1 (fr) 2009-11-19

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PCT/JP2009/057727 WO2009139265A1 (fr) 2008-05-16 2009-04-17 Canon à neige

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103447185A (zh) * 2013-08-06 2013-12-18 广东电网公司电力科学研究院 干冰喷射装置及方法

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6118737B2 (ja) * 2014-01-29 2017-04-19 エスペック株式会社 環境試験装置、並びに、降雪用噴霧ノズル
DE102015200236A1 (de) * 2015-01-12 2016-07-14 Lechler Gmbh Verfahren zum Erzeugen eines Sprühstrahls und Zweistoffdüse

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3301485A (en) * 1964-09-14 1967-01-31 Joseph C Tropeano Method and apparatus for making frozen particles
US5090619A (en) * 1990-08-29 1992-02-25 Pinnacle Innovations Snow gun having optimized mixing of compressed air and water flows
JPH08509800A (ja) * 1993-02-19 1996-10-15 ヨルク フランス エルシャル スノーマシンの改良

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3301485A (en) * 1964-09-14 1967-01-31 Joseph C Tropeano Method and apparatus for making frozen particles
US5090619A (en) * 1990-08-29 1992-02-25 Pinnacle Innovations Snow gun having optimized mixing of compressed air and water flows
JPH08509800A (ja) * 1993-02-19 1996-10-15 ヨルク フランス エルシャル スノーマシンの改良

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103447185A (zh) * 2013-08-06 2013-12-18 广东电网公司电力科学研究院 干冰喷射装置及方法
CN103447185B (zh) * 2013-08-06 2015-05-13 广东电网公司电力科学研究院 干冰喷射装置及方法

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