EP3040657A1 - Dispositif pour la production de neige artificielle - Google Patents

Dispositif pour la production de neige artificielle Download PDF

Info

Publication number
EP3040657A1
EP3040657A1 EP15003474.2A EP15003474A EP3040657A1 EP 3040657 A1 EP3040657 A1 EP 3040657A1 EP 15003474 A EP15003474 A EP 15003474A EP 3040657 A1 EP3040657 A1 EP 3040657A1
Authority
EP
European Patent Office
Prior art keywords
water
snow
cannon
nozzles
nucleator
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.)
Withdrawn
Application number
EP15003474.2A
Other languages
German (de)
English (en)
Inventor
Robert Krajnc
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
Publication of EP3040657A1 publication Critical patent/EP3040657A1/fr
Withdrawn legal-status Critical Current

Links

Images

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
    • 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
    • F25C2303/046—Snow making by using low pressure air ventilators, e.g. fan type snow canons
    • 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

Definitions

  • Apparatuses for making artificial snow - the snow cannons - have not changed significantly considering the state of technology as determined upon their invention: they consist of a rotary part - the rotor - with a strong fan, and a stationary part - the stator -, formed as a whole together with the housing of the snow cannon in the shape of a hollow cylindrical body, through which air flow is forcibly ventilated.
  • the gaseous air at the entrance of the fan forms a turbulent flow and picks up droplets of water at the exit, thereby making artificial snow at the exit from the apparatus.
  • it is necessary to ensure a proper environment or operate at an environmental temperature that is low enough to make snowflakes, created by blowing out cold air mixed with water droplets.
  • this process is well dimensioned and technically designed and it takes place in a proper environment, we are able to produce artificial snow for outdoor spaces, suitable for winter sports.
  • the process is similar indoors, but we have to ensure a low enough temperature for the surfaces on which the artificial snow is deposited, so we use an additional technique of cooling the floors and the space (building) itself.
  • Another crucial technical factor for a successful use of snow cannons as apparatuses for making artificial snow is to ensure an adequate pressure of water and air as media for making snow, realized by means of pressuring the water into the apparatus by force and supplying air with a compressor. Based on this we discern high-pressure and low-pressure technical solutions and variants of apparatuses for making artificial snow.
  • the air and water are mixed inside the cannon.
  • It is basically a de Laval nozzle, in which compressed air under pressure of between 7 and 12 bar is mixed with water, and this compressed air at the same time also serves as process air and activator of crystallization seeds.
  • the mixture of air and water is totally broken up in the nozzle under the influence of sound shocks, after which it rapidly leaves the nozzle driven by expansion.
  • the compressed air also ensures the cannon's range.
  • the disadvantages of this system are deafening noise and an enormous energy consumption.
  • the advantage lies in the possibility to make snow at higher temperatures, as the mixture is supercooled upon expansion. Such cannons remain today in conditional use.
  • the system of rods also known as a "giraffe” has been developed in a dozen of different technical variants that are suitable for different terrains and surfaces being covered with artificial snow.
  • a "giraffe” the water nozzles are elevated as high from the ground as possible and water is then being ejected from them.
  • the range in this system is ensured by the height of the support leg and the length of the exit neck into which water nozzles are inserted.
  • These cannons also have atomizers blowing grains of ice into the basic jet in order to make snow.
  • the second technical variant of covering with artificial snow involves installing one or several pipes along the whole length of the terrain, or s part of the terrain that is suitable and must be covered with artificial snow.
  • Exit nozzles are installed on the pipes in certain spacing, through which water under high pressure is pushed into space where the supercooled water turns into artificial snow.
  • This system is suitable when we dispose with strong enough compressor devices, an unlimited supply of water and very low environmental temperatures.
  • One disadvantage of all said systems lies in the fact that a significant part of water, up to 30 %, is lost in the form of sleet, which accumulates on the floor as ice and eventually encases in ice the apparatus itself, causing additional concerns and costs for the operators of these systems.
  • the most common technical solution uses a round hollow system into which a motor - fan is positioned as a separate apparatus with an additional compressor and water pump. Its function is to make high forces for pushing water as the main medium for making artificial snow. These are called low-pressure propeller-driven snow cannons, where the compressed air only takes care of crystallization grains, but is not used as the driving medium.
  • propeller-driven cannons the driving medium is external air, accelerated by constant pressure blowers - fan propellers past the nozzles where the water mist is ejected.
  • right next to the nozzles are nucleators that blow out a mixture of compressed air and a small quantity of water. Once this mixture comes out of the nozzle, it freezes instantly and as these grains of ice arrive inside the basic jet of water and air, they are mixed with water droplets, which start accumulating around the grains as snowflakes.
  • the proposed invention is a new product for making artificial snow - a snow cannon with a modified system for supplying compressed air and water and system for mixing air and water, designed in the submitted patent application as a propeller fan, installed inside the housing of a snow cannon, composed of a very strong electric motor, designed with a special structure and shape according to a technical solution, presented in this patent application.
  • the second crucial innovative solution according to this patent application lies in the concept of the nucleater, positioned right behing the cone-shaped exit part of the motor's stator, onto which the propeller fan is installed.
  • a constant small quantity of narrowly focused mist of water and ice grains is supplied into the basic jet of water droplets, obtained and supplied from the exit water nozzles.
  • the third technical solution rounding up our innovation is an arrangement of exit water nozzles which makes it possible for the exiting water jets not to overlap and to uniformly supply air pressure to the mouth of every nozzle for continually cutting the water jet at the mouth of the nozzle with air.
  • We achieved this by changing the design and concept of the motor's stator into an aerodynamic dome shape, and by clamping it into the housing with two or more toothed blades, which carry out the function of creating maximum turbulence of air flows to create empty air space between the exits for water jets in the nozzles and the water mist created in the nucleator.
  • At the exit of water flows we have positioned a segment with an increased number of water nozzles.
  • each ring segement is controller individually for optimal water supply and the capability to adapt the quantity of water to the existing weather conditions.
  • the problem was solved by the design of the cannon so that the ice grains meet the water droplets no closer than 1,3 m from the water nozzles, whereby the fan uses a relatively high dynamic pressure to create a hollow air cone inside the basic jet, into the tip of which the crystallization grain are blown in.
  • the advantage lies in the fact that the water from the nucleator gets cooled down more compared to the other cannons, which do not have such a large mist jet from the nucleator, because more ice grains are used in the process compared to the snow cannons with a small jet coming from the nucleator.
  • a strong fan provides large quantities of process air, into which as fine as possible water mist is blown through water nozzles.
  • the air flow carries the mist into the air, removing the heat from it as it travels and "slowly" cooling the droplets to the mean temperature of process air - water mist mixture.
  • We used the quotes because it all happens in tenths of a second and rarely a snowflake flies in the air for more than a couple of seconds.
  • the solution is to mimic the nature, which brings crystallization grains into the clouds and the snowflakes than form around these seeds.
  • the crystallization grains are provided by special nozzles known as nucleators, through which air under pressure with the addition of small quantities of water is blown out. Upon exiting the nozzle, the pressure of the air-water mixture falls abruptly by 4-6 bar and the mixture cools down instantly, forming an icy mist. These small grains are blown directly into the basic jet of water and air, so the snowflakes start to form around the icy mantle of water droplets coming from the nucleator. A chain reaction begins at once and snow is created.
  • the American manufacturer of snow cannons Pole Cat has a solution that appears similar to ours, but the nozzles have too much impact power - pressure (kinetic energy), and the propeller is too weak (there is not enough dynamic pressure), so the droplets close the path of mist too quickly and the water is not yet cool enough to make snow well.
  • US 3761020 proposes a rod-type snow cannon with at least two exit nozzles and the capability of precooling the exit water and air, supplied through an additional double pipeline.
  • Tens of patent applications around the world are similar to this invention, but the closest are the following patents: US 3010660 , US 8535168 and WO2010025501 .
  • EP 0977968 B1 also proposes a single vertical rod-type snow cannon with the nucleator places in the center, and the water nozzles arranged around a round pipe on the bottom side.
  • the following already applied patents follow this invention with very similar technical solutions: CH 682 694 05 , US 500 4151 and DE 40 33 310 A1 .
  • the inventions mentioned above mainly deal with rod-type snow cannons having a nucleator or a different system for blowing in grainy mist and with different effects in the exploitation.
  • the Canadian invention CA 2847320A1 proposes a snow making apparatus including the basic assemblies such as: collector, annular chamber-shaped nucleator and a set of water nozzles.
  • the nucleator as an annular chambers is configured to receive the air-water mixture from the first discharge, whereby the first discharge is oriented tangentially to the direct mixture of air and water in the nucleator.
  • the nucleator therefore consists of an annular chamber directing the water mist, a significant difference from our innovative idea of a nucleator.
  • droplets are drawn from the air nozzles along the path of the air jet and a 1,3-1,5 m long hollow cone with no water due to draft is formed in the middle of the air jet.
  • the main novelty is in a different design and solution of technical problems that surfaced during the design process because the bar was set very high, but this is the most important characteristic of designing the new way of using the bearing blades of electric motor stator, the simplicity of the nucleator's design, reflected in the perfection and achievement of the set goal and the form-technical installation of annular segments and water nozzles in the exit tube of the snow cannon, which makes it entirely possible to cut the water jet at the nozzle exit, but without hindering or influencing the operation of nearby nozzles.
  • the product is highly commercially viable and has been widely implemented on all ski slopes owing to the unexpected results, usability and quality, which make it possible to operate at higher environmental temperatures, where similar products only work with half the efficiency rate and consume more energy.
  • Drawing 1 showing the side view of our snow cannon, consisting of a round hollow strong housing into which an electric motor with strong fan blades is inserted, its blades being adapted by design and shape to the required capacity for an optimum production of artificial snow, a nucleator for creating the water mist, and at the exit a tube with water nozzles.
  • Drawings 2 and 3 to present the technical solution of individual annular segments and the arrangement of water nozzles thereon.
  • Drawing 1 presents the side view of our invention, the assembled snow cannon with a round hollow housing 1, inside of which an electric motor 3 is installed with at least two stator attachment blades 4.
  • an electric motor 3 On the electric motor 3 on the air entry side 3 there is a fan with blades 2, designed by structure and shape so as to ensure an optimum air flow A through the housing 1 of our snow cannon.
  • the stator of electric motor 3 When observed along the horizontal in the direction of air flow A, the stator of electric motor 3 is shaped aerodynamically, with the nucleator 6 positioned immediately after its tip, connected to the housing 1 with at least two tube-shaped attachment supports, through which water is delivered to create water mist 6.2.
  • the vortex air flow on a classic stator is caused by the effect of fan blades 2 up to the separation of the boundary air layer 4.1.1.
  • a stagnation rotor - vortex flow hereinafter referred to as the rotor - is formed on the last edge of the stator, with the amplitude equal to the thickness of the boundary air layer 4.1.1.
  • the number of rotors of mixture of positive pressure and negative pressure boundary air layer 4.1.1 precisely equals the number of stator blades 4, and they emit a sound similar to wind howling over a slightly thicker steel wire.
  • the additional energy compresses the negative pressure boundary layer/the mixture of positive pressure and negative pressure boundary air layer 4.1.1 back to the blade 4 and the mixing of both layers yield enough energy to rotate the mixing branch/the mixture of positive pressure and negative pressure boundary air layer 4.1.1 at the teeth/nipples 4.1, so it leaves the tip of the tooth/nipple 4.1 in the shape of a small vortex 4.1.1.
  • every blade 4 has three teeth 4.1 and there are thirteen blades, there are 39 small rotors or mixtures of positive pressure and negative pressure boundary air layers 4.1.1 at the exit of the snow cannon, which are compressed and small enough to mimic laminar flow.
  • the second and very important innovative solution is non-uniform line arrangement of water nozzles 5, shown in Figure 3 , where the water jet from the nozzle 5 does not overlap with the jet from the adjecent nozzles 5.
  • the maximum spread of water droplets 5.1 as shown in Drawing 1 , which then bind in the continuation of exit path to icy water droplets 4.1.1.1, ejected under pressure by means of a compressor through the nucleator 6.
  • the text above only describes concrete parts of our snow cannon and compares it to similar apparatuses, which are already in operation but only offer a very short range of water mist jet.
  • Our snow cannon has been made according to this patent application and has been realised with the described key parts, as presented in the implementation case and substantiated with the attached drawing and its details - views A and B.
  • the implementation case represents a snow cannon with an electric motor - fan, connected to the housing of the snow cannon by means of thirteen stator blades, a nucleator and an exit part for air and water, looking like a tube made of annular segments, into which nozzles for discharging water at high pressure are positioned.
  • the water from the reservoir is supplied through pumps and filters at high pressure to the nozzles, where it is atomized and supercooled in an air flow at the temperature under 0 °C.
  • Supercooled rain is formed, known from the nature as sleet, or from aeroplanes where a supercooled droplet hits a wing and freezes onto it. This is taking place on the outer nozzle ring, where there are several nozzle ring that can be activated partially according to the requirements to change the water/air ratio.
  • nucleator-atomizer In the centre behind the aerodynamically shaped electric motor's stator there is a nucleator-atomizer, where a small quantity of water is mixed with the air from the compressor to produce a mist, that is injected into the air flow created by the fan's propeller, situated behind all the nozzles.
  • the fan is considerably stronger compared to the known systems and pushes the water water droplets from the nozzles (outer rim) and the mist from where it is formed considerably farther than the existing systems. As they travel this longer distance, the water droplets are supercooled considerably more than in the existing systems, and as they come in contact with the mist from the nucleator in the space for water mist atomization (acting analogous to crystallization seeds in cooling of molten metal or dust particles in cloud formation), the state of matter immediately changes from water to snow. This releases the so called latent heat, which prohibits snow from forming if the water droplets are not supercooled enough.
  • the water droplets are supercooled by extending the path of mixing with the water mist from the nucleator. In the case of our patent application, the minimum length is 1,3 m.
  • the droplets are not supercooled as much and a lower environmental temperature is required to make snow.
  • the new system proposed in this patent application, is therefore able to operate at higher environmental temperatures, which represent a constant problem at the ski resorts. This is why snow is usually made only during the night and if the night is not cold enough, there will be no snow.
  • the cannons manufactured according to our innovative solution are able to make snow at no less than 30 % higher temperatures/warmer atmosphere than the other snow cannons known to us.
  • the tests have revealed we are able to make snow at -1,8 °C, while the others are unable to start making snow over -2,6 °C. This is a 30 % difference or, put otherwise, at -5°C we are able to make at least 30 % more snow than our competitors spending approximately the same amount of energy and water. The difference is even higher, but some backup capacity will probably not hurt.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Nozzles (AREA)
EP15003474.2A 2014-12-09 2015-12-07 Dispositif pour la production de neige artificielle Withdrawn EP3040657A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SI201400440A SI24517A (sl) 2014-12-09 2014-12-09 Naprava za izdelavo umetnega snega

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
SI201400440 Previously-Filed-Application 2014-12-09

Publications (1)

Publication Number Publication Date
EP3040657A1 true EP3040657A1 (fr) 2016-07-06

Family

ID=52998318

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15003474.2A Withdrawn EP3040657A1 (fr) 2014-12-09 2015-12-07 Dispositif pour la production de neige artificielle

Country Status (2)

Country Link
EP (1) EP3040657A1 (fr)
SI (1) SI24517A (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110169293A (zh) * 2019-06-25 2019-08-27 苏州力佳达电子科技有限公司 一种含有微气泡功能的人工降雨降雪发射装置
CN114111144A (zh) * 2021-10-26 2022-03-01 北京建筑大学 一种适应气候条件的大雪量造雪机及其喷嘴控制方法

Citations (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3010660A (en) 1958-10-10 1961-11-28 Barrett Francis Device for making snow
US3761020A (en) 1972-02-17 1973-09-25 J Tropeano Method and apparatus for snow making
DE3015020A1 (de) * 1978-12-07 1981-10-29 Zemel Brothers, Inc., Middlefield, Conn. Verfahren und vorrichtung zum erzeugen von kuenstlichem schnee
US4682729A (en) * 1985-06-03 1987-07-28 The Dewey Electronics Corporation Snowmaking machine with compressed air driven reaction fan
US4828175A (en) * 1987-02-03 1989-05-09 Sufag Sport- Und Freizeitanlagen Gesellschaft M.B.H. Snow-making machine
US5004151A (en) 1989-11-20 1991-04-02 Dupre Herman K Method and apparatus for making snow
JPH04295574A (ja) * 1991-03-22 1992-10-20 Shiyooshin:Kk 人工造雪方法および人工造雪装置
FR2742851A1 (fr) * 1995-12-26 1997-06-27 Guillaume Gil Perfectionnements aux procedes de fabrication de la neige artificielle, et dispositifs de mise en oeuvre
EP0787960A2 (fr) * 1996-02-02 1997-08-06 Luciano Marcantoni Enneigeur à grande performance
US5810249A (en) * 1994-09-21 1998-09-22 Lenko L. Nilsson Method and apparatus for artificial making of snow
EP0977968B1 (fr) 1997-04-25 2002-11-27 Ratnik Industries, Incorporated Procede et appareil pour fabriquer de la neige
JP2003278696A (ja) * 2002-03-26 2003-10-02 Fuji Electric Co Ltd プロペラファン
US20050006493A1 (en) * 2001-12-11 2005-01-13 Wilhelm Stofner Snow canon and method for operating the same
AT10810U1 (de) * 2008-08-04 2009-10-15 Stephan Ing Schlemmer Vorrichtung zur verbesserung von schnee-erzeugern
WO2009125359A1 (fr) * 2008-04-09 2009-10-15 Weisser Wolf S.R.L. Couronne de pulvérisation pour générateur de neige artificielle et générateur de neige artificielle
WO2010025501A1 (fr) 2008-09-03 2010-03-11 Darren Visser Appareil de sports de neige
EP2244042A2 (fr) * 2009-04-14 2010-10-27 Hans Wiesmeier Procédé d'augmentation de l'efficacité dans la production de neige technique à l'aide de canons à neige basse pression
WO2012016550A2 (fr) * 2010-08-02 2012-02-09 Vorackova Adela Procédé de production de neige de culture et appareil permettant de mettre en oeuvre ce procédé
CA2847320A1 (fr) 2013-03-22 2014-09-22 John Pentti Nikkanen Appareil de fabrication de neige

Patent Citations (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3010660A (en) 1958-10-10 1961-11-28 Barrett Francis Device for making snow
US3761020A (en) 1972-02-17 1973-09-25 J Tropeano Method and apparatus for snow making
DE3015020A1 (de) * 1978-12-07 1981-10-29 Zemel Brothers, Inc., Middlefield, Conn. Verfahren und vorrichtung zum erzeugen von kuenstlichem schnee
US4682729A (en) * 1985-06-03 1987-07-28 The Dewey Electronics Corporation Snowmaking machine with compressed air driven reaction fan
US4828175A (en) * 1987-02-03 1989-05-09 Sufag Sport- Und Freizeitanlagen Gesellschaft M.B.H. Snow-making machine
US5004151A (en) 1989-11-20 1991-04-02 Dupre Herman K Method and apparatus for making snow
DE4033310A1 (de) 1989-11-20 1991-05-23 Dupre Herman K Verfahren und vorrichtung zum erzeugen von schnee
CH682694A5 (de) 1989-11-20 1993-10-29 Herman K Dupre Verfahren und Vorrichtung zum Erzeugen von Schnee.
JPH04295574A (ja) * 1991-03-22 1992-10-20 Shiyooshin:Kk 人工造雪方法および人工造雪装置
US5810249A (en) * 1994-09-21 1998-09-22 Lenko L. Nilsson Method and apparatus for artificial making of snow
FR2742851A1 (fr) * 1995-12-26 1997-06-27 Guillaume Gil Perfectionnements aux procedes de fabrication de la neige artificielle, et dispositifs de mise en oeuvre
EP0787960A2 (fr) * 1996-02-02 1997-08-06 Luciano Marcantoni Enneigeur à grande performance
EP0977968B1 (fr) 1997-04-25 2002-11-27 Ratnik Industries, Incorporated Procede et appareil pour fabriquer de la neige
US20050006493A1 (en) * 2001-12-11 2005-01-13 Wilhelm Stofner Snow canon and method for operating the same
JP2003278696A (ja) * 2002-03-26 2003-10-02 Fuji Electric Co Ltd プロペラファン
WO2009125359A1 (fr) * 2008-04-09 2009-10-15 Weisser Wolf S.R.L. Couronne de pulvérisation pour générateur de neige artificielle et générateur de neige artificielle
AT10810U1 (de) * 2008-08-04 2009-10-15 Stephan Ing Schlemmer Vorrichtung zur verbesserung von schnee-erzeugern
WO2010025501A1 (fr) 2008-09-03 2010-03-11 Darren Visser Appareil de sports de neige
US8535168B2 (en) 2008-09-03 2013-09-17 Darren Visser Snow sports apparatus
EP2244042A2 (fr) * 2009-04-14 2010-10-27 Hans Wiesmeier Procédé d'augmentation de l'efficacité dans la production de neige technique à l'aide de canons à neige basse pression
WO2012016550A2 (fr) * 2010-08-02 2012-02-09 Vorackova Adela Procédé de production de neige de culture et appareil permettant de mettre en oeuvre ce procédé
CA2847320A1 (fr) 2013-03-22 2014-09-22 John Pentti Nikkanen Appareil de fabrication de neige

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110169293A (zh) * 2019-06-25 2019-08-27 苏州力佳达电子科技有限公司 一种含有微气泡功能的人工降雨降雪发射装置
CN110169293B (zh) * 2019-06-25 2021-07-13 湖北楚天通用航空有限责任公司 一种含有微气泡功能的人工降雨降雪发射装置
CN114111144A (zh) * 2021-10-26 2022-03-01 北京建筑大学 一种适应气候条件的大雪量造雪机及其喷嘴控制方法

Also Published As

Publication number Publication date
SI24517A (sl) 2015-04-30

Similar Documents

Publication Publication Date Title
CA1248768A (fr) Machine a faire la neige, avec soufflante de reaction menee par air comprime
US6402047B1 (en) Snow making apparatus and method
US3298612A (en) Snow-making unit
ES2259729T3 (es) Aparato para hacer nieve y metodo para manejar un aparato para hacer nieve.
US8376245B2 (en) Snow making apparatus and method
US2738226A (en) Crop spraying apparatus
US3952949A (en) Method of making snow
EP3040657A1 (fr) Dispositif pour la production de neige artificielle
CN104422222A (zh) 用于制造人造雪的装置及方法
US6793148B2 (en) Water-only method and apparatus for making snow
EP2972018B1 (fr) Nucléateur permettant de générer des cristaux de glace afin de faire passer des gouttelettes d'eau dans des systèmes d'enneigement
CN113028452A (zh) 一种双重扰流组合式甩油盘
US6378778B1 (en) Snow gun
SE528224C2 (sv) Sätt och anordning för snöframställning
JP5967157B2 (ja) 拡散式噴雪装置および噴雪の拡散方法
US4202496A (en) Snow making system
EP2601462B1 (fr) Procédé de production de neige de culture et appareil permettant de mettre en oeuvre ce procédé
WO2021100013A1 (fr) Ensemble de distribution destiné à un générateur de neige et générateur de neige comprenant ledit ensemble de distribution
US4759503A (en) Device for making artificial snow
WO2019199192A1 (fr) Dispositif basse pression, en particulier pour la production de neige
SI25666A (sl) Naprava za umetni sneg
RU2701303C1 (ru) Линия производства искусственного снега для нужд сельского хозяйства
RU2340375C2 (ru) Генератор высокократной воздушно-механической пены
JP6160936B2 (ja) 吹雪の拡散方法
WO2022075855A1 (fr) Buse de fabrication de neige

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20170110