EP0461160B1 - Snowmaking device - Google Patents

Snowmaking device Download PDF

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Publication number
EP0461160B1
EP0461160B1 EP90904191A EP90904191A EP0461160B1 EP 0461160 B1 EP0461160 B1 EP 0461160B1 EP 90904191 A EP90904191 A EP 90904191A EP 90904191 A EP90904191 A EP 90904191A EP 0461160 B1 EP0461160 B1 EP 0461160B1
Authority
EP
European Patent Office
Prior art keywords
environment
snow
tent
dome
light
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.)
Revoked
Application number
EP90904191A
Other languages
German (de)
French (fr)
Other versions
EP0461160A4 (en
EP0461160A1 (en
Inventor
Andrew Boyd French
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.)
Polar Technologies International Pty Ltd
Original Assignee
Polar Technologies International Pty Ltd
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 Polar Technologies International Pty Ltd filed Critical Polar Technologies International Pty Ltd
Priority to EP97107403A priority Critical patent/EP0798520B1/en
Priority to EP00203328A priority patent/EP1065456B1/en
Publication of EP0461160A1 publication Critical patent/EP0461160A1/en
Publication of EP0461160A4 publication Critical patent/EP0461160A4/en
Application granted granted Critical
Publication of EP0461160B1 publication Critical patent/EP0461160B1/en
Anticipated expiration legal-status Critical
Revoked legal-status Critical Current

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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
    • 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
    • F25C2303/044—Snow making using additional features, e.g. additives, liquid gas
    • 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 method and apparatus for making snow, and in particular, to providing a snow-making environment wherein snow can be produced under controlled conditions.
  • US-A-2,968,164 describes a mobile apparatus which purports to form and distribute snow in ambient temperatures of up to 30°C.
  • the apparatus comprises a water tank installed on the back of a vehicle wherein a stream of water is directed from the tank into the path of a volume of moving air which is provided by a propeller also mounted on the back of the truck.
  • the effectiveness of this device is however dependent upon the ambient temperature and/or humidity conditions within which the device is operated.
  • the present invention seeks to provide a controlled environment, such that the production of snow 24 hours a day, 365 days of a year, is facilitated, by providing a snow-making environment, wherein the temperature, humidity and/or other environmental factors are controlled.
  • a light-weight portable snow making apparatus which is easily transported for assembly and use at any selected location comprising an artificial environment provided within a stowable tent or dome-like structure; means for controlling the temperature and humidity within the environment and at least one snow gun having at least the nozzle provided within or adjacent to the environment.
  • the artificial snow-making environment 1 comprises a tent or dome-like structure 2, which separates a closed environment system 3 from the external natural environment 4.
  • the tent or dome-like structure 2 may be constructed in a variety of ways and utilising a variety of materials, however, obviously, the structure 2 preferably has some degree of thermal insulating characteristics, such that the energy required to achieve the desired parameters of the artificial environment 3 is minimised.
  • Temperature, humidity and otherwise conditioned air is supplied into the controlled environment 3 by means of appropriate machinery, generally designated by the numeral 5.
  • the machinery consists of a fan or air pump 6 which facilitates the recycling or intake of air from the external environment 4.
  • the air is passed through a chiller 7 and dehumidifier 8 and is exhaled into the controlled environment 3 via a nozzle 9.
  • the water and air pipes 11 also preferably passed through a chiller.
  • the nozzle 9 is preferably able to be swivelled such that the chilled and dehumidified air may be supplied into the controlled environment 3 at any desired direction.
  • both temperature and humidity are preferably as low as possible, however in an environment which is above 0°C at high humidity, it is still possible to produce snow.
  • the optimum conditions would be at temperatures approaching -273°C and at humidity approaching zero levels.
  • a snow gun 10 is also supplied within the closed controlled environment 3.
  • the snow gun 10 is of any conventional type, requiring air and water hoses 11 for the production of snow.
  • the snow-making apparatus is assembled as follows.
  • the apparatus which is preferably on a ski like structure, for easy transportation, is dragged to the required position by means of a skidoo or the like.
  • the tent or dome-like structure 2 is then dragged over the snow gun 10 and the nozzle of the chilling and dehumidifying machinery 5.
  • the tent or dome-like structure 2 is preferably connected to the ground surface by a plurality of tent pegs or weights around the perimeter thereof.
  • the tent or dome-like structure 2 may be simply inflated by supplying air through the nozzle 9 of the machinery 5.
  • FIG. 2 a preferred embodiment of the snow-making apparatus, illustrating the portability of the invention. That is, the snow-making apparatus, comprising the fan 6, the chiller 7 and the dehumidifier 8, together with a storage facility 13 for the tent or dome-like structure 2 are provided on a ski-like arrangement 14.
  • the tent or dome-like structure 2 may simply be withdrawn from the storage means 13 and dragged forwardly to cover the nozzle 9 of the machinery 5.
  • the snow-making device and method of the present invention provides a closed environment system wherein the temperature, humidity and/or other environmental conditions are regulated as desired, to facilitate the production of snow, via a conventional snow gun. Due to the lightweight construction of the invention, the apparatus may be easily moved, such that upon completion of the snow-making operating at a particular place, the system may be easily moved to the next desired location. Obviously, in use, a large pile of snow may be produced at one point, and then a snow cat or the like may be utilised to spread the snow. The present invention therefore allows the production of snow in a controlled environment 24 hours a day, 365 days year anywhere in the world.
  • the present invention provides a snow making method and apparatus which obviates the need for specific refrigeration machinery.
  • gases in any cold form for instance nitrogen or carbon dioxide, which have characteristics of below zero temperature in their normal gaseous state.
  • This may be achieved by utilising gases which are cold in their normal state, or by providing the gases in compressed condition to induce a change of state and consequently provide low temperatures, such as, providing the gas in a compressed (liquid) condition, and allowing the mixture to change state to a gas.
  • the tent or dome like structure 2 consequently forms a cold room, in which the snow may be produced, without the need for a mechanical chilling means.
  • the gases may be produced from a normal pressure cylinder, or may be machinery made.
  • the tent or dome like structure 2 will stop wind from blowing the snow away whilst it is being made, and it will also protect the snow from sun, rain and other natural environmental effects.
  • a floor could be provided, either in solid form or in the form of a soft zip-on construction, such being particularly useful in the case where it is desirable to completely isolate the closed environment from the external environment.
  • the tent or dome-like structure can also be optionally provided such that it is provided with a hole therein, such that the snow-making device is provided externally therethrough and directed through the wall of the tent or dome-like structure.
  • advertising material may be provided on the external face of the tent or dome-like structure.
  • means is provided on the tent-like structure to recycle the gas, such as Nitrogen, such that same can be re-utilised.
  • the dome-like structure also preferably is provided with a humidity exit means to exit any humidity in the closed environment.
  • machinery is provided to extract nitrogen from the surrounding air, and compress same.
  • nitrogen, or other appropriate gas can be manufactured on site, rather than having to transport same to the location of the snow making machinery.
  • tent-like or dome-like arrangements materials are preferably chosen such that they have good thermal insulative properties, such that the energy required to provide the controlled environment is minimised. Obviously the amount of thermal insulation will vary depending on the particular location, and the desired temperature difference which is required in comparison to the surrounding environment.
  • a conveyor belt arrangement may be provided to move the snow from the location of production to the desired ground surface.
  • the present invention may be preferably embodied such that the snow making device is portable, for instance mounted on a snow cat.
  • an air flow direction system can be incorporated into the controlled environment. This would preferably take the format of having a plurality of baffles.
  • the chillers and dehumidifiers can be supplied underground at a central location at the point where the air and water hoses originate.
  • the tent or dome-like structure 2 may be portable, and it may incorporate a frame or have a frameless structure.
  • An air supported frame is also envisaged, wherein an insulating air pocket is supplied between the closed environment and the external environment, for the dual purpose of insulating the two environments and also separating the structure 2.
  • the present invention may therefore be utilised in a situation to supplement the natural snow falls in an environment, or provide snow in an environment where snow falls are not normally naturally occurring.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Tents Or Canopies (AREA)
  • Buildings Adapted To Withstand Abnormal External Influences (AREA)
  • Suspension Of Electric Lines Or Cables (AREA)
  • Discharge Heating (AREA)
  • Heating, Cooling, Or Curing Plastics Or The Like In General (AREA)
  • Medicines Containing Material From Animals Or Micro-Organisms (AREA)
  • Disintegrating Or Milling (AREA)
  • Encapsulation Of And Coatings For Semiconductor Or Solid State Devices (AREA)
  • Ultra Sonic Daignosis Equipment (AREA)
  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
  • Cleaning Of Streets, Tracks, Or Beaches (AREA)
  • Prostheses (AREA)
  • Toys (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)

Abstract

A device and method for the production of artificial snow, the device (Fig. 1) comprising an environment (3) wherein the temperature, humidity and/or other environmental conditions are adapted to be controlled, the device also having at least one snow gun (10) having at least the nozzle portion thereof provided substantially within or adjacent to the environment (3). Within the environment (3) the humidity and temperature may be controlled by a dehumidifier (8) and a cooler or chiller (7), such that the conditions within the environment (3) are satisfactory for snow production. Alternatively, the mini controlled environment may be provided wherein the nozzle or the environment adjacent the nozzle (16) (Fig. 3) is controlled to be of desired temperature and humidity. <IMAGE>

Description

The present invention relates to a method and apparatus for making snow, and in particular, to providing a snow-making environment wherein snow can be produced under controlled conditions.
At present, snow-making production is controlled by the natural environmental weather conditions. To produce man made snow, low temperatures and low humidity conditions are required. Unfortunately, in some parts of the world, for example, Australia, conditions are often such that the temperature and/or humidity may be low, but the other environmental factors are still unsuitable for the production of man made snow. This greatly restricts the suitable times when snow can be made.
US-A-2,968,164 describes a mobile apparatus which purports to form and distribute snow in ambient temperatures of up to 30°C. The apparatus comprises a water tank installed on the back of a vehicle wherein a stream of water is directed from the tank into the path of a volume of moving air which is provided by a propeller also mounted on the back of the truck. The effectiveness of this device is however dependent upon the ambient temperature and/or humidity conditions within which the device is operated.
The present invention seeks to provide a controlled environment, such that the production of snow 24 hours a day, 365 days of a year, is facilitated, by providing a snow-making environment, wherein the temperature, humidity and/or other environmental factors are controlled.
According to one aspect of the present invention there is provided a light-weight portable snow making apparatus which is easily transported for assembly and use at any selected location comprising an artificial environment provided within a stowable tent or dome-like structure; means for controlling the temperature and humidity within the environment and at least one snow gun having at least the nozzle provided within or adjacent to the environment.
The present invention will be more fully understood from the following detailed description thereof with reference to the accompanying drawings, wherein:
  • Figure 1 shows an artificial snow-making environment, together with the required machinery and snowgun associated therewith; and,
  • Figure 2 illustrates the preferred portability of the snow-making apparatus in accordance with the present invention.
    • In Figure 1, is illustrated an artificial snow-making environment, generally designated by the numeral 1. The artificial snow-making environment 1 comprises a tent or dome-like structure 2, which separates a closed environment system 3 from the external natural environment 4. The tent or dome-like structure 2 may be constructed in a variety of ways and utilising a variety of materials, however, obviously, the structure 2 preferably has some degree of thermal insulating characteristics, such that the energy required to achieve the desired parameters of the artificial environment 3 is minimised.
    Temperature, humidity and otherwise conditioned air is supplied into the controlled environment 3 by means of appropriate machinery, generally designated by the numeral 5. In particular, the machinery consists of a fan or air pump 6 which facilitates the recycling or intake of air from the external environment 4. The air is passed through a chiller 7 and dehumidifier 8 and is exhaled into the controlled environment 3 via a nozzle 9. The water and air pipes 11 also preferably passed through a chiller. The nozzle 9 is preferably able to be swivelled such that the chilled and dehumidified air may be supplied into the controlled environment 3 at any desired direction. It should be obvious to persons skilled in the art that both temperature and humidity are preferably as low as possible, however in an environment which is above 0°C at high humidity, it is still possible to produce snow. The optimum conditions would be at temperatures approaching -273°C and at humidity approaching zero levels.
    A snow gun 10 is also supplied within the closed controlled environment 3. The snow gun 10 is of any conventional type, requiring air and water hoses 11 for the production of snow.
    In use, the snow-making apparatus is assembled as follows. The apparatus, which is preferably on a ski like structure, for easy transportation, is dragged to the required position by means of a skidoo or the like. The tent or dome-like structure 2 is then dragged over the snow gun 10 and the nozzle of the chilling and dehumidifying machinery 5. The tent or dome-like structure 2 is preferably connected to the ground surface by a plurality of tent pegs or weights around the perimeter thereof. The tent or dome-like structure 2 may be simply inflated by supplying air through the nozzle 9 of the machinery 5. Once the required parameters are achieved within the closed environment 3, the snow-making operation may be commenced.
    In Figure 2 is shown a preferred embodiment of the snow-making apparatus, illustrating the portability of the invention. That is, the snow-making apparatus, comprising the fan 6, the chiller 7 and the dehumidifier 8, together with a storage facility 13 for the tent or dome-like structure 2 are provided on a ski-like arrangement 14. The tent or dome-like structure 2 may simply be withdrawn from the storage means 13 and dragged forwardly to cover the nozzle 9 of the machinery 5.
    Therefore, the snow-making device and method of the present invention provides a closed environment system wherein the temperature, humidity and/or other environmental conditions are regulated as desired, to facilitate the production of snow, via a conventional snow gun. Due to the lightweight construction of the invention, the apparatus may be easily moved, such that upon completion of the snow-making operating at a particular place, the system may be easily moved to the next desired location. Obviously, in use, a large pile of snow may be produced at one point, and then a snow cat or the like may be utilised to spread the snow. The present invention therefore allows the production of snow in a controlled environment 24 hours a day, 365 days year anywhere in the world.
    In a further preferred embodiment the present invention provides a snow making method and apparatus which obviates the need for specific refrigeration machinery. This is achieved by utilising gases in any cold form, for instance nitrogen or carbon dioxide, which have characteristics of below zero temperature in their normal gaseous state. This may be achieved by utilising gases which are cold in their normal state, or by providing the gases in compressed condition to induce a change of state and consequently provide low temperatures, such as, providing the gas in a compressed (liquid) condition, and allowing the mixture to change state to a gas. By supplying such gases within the tent or dome-like structure 2, or within an insulating wall layer between the closed environment system 3 and the external environment 4, the snowgun supplied therein will then be provided at a low temperature environment suitable for snow production, without the necessity for the chiller 7. The tent or dome like structure 2 consequently forms a cold room, in which the snow may be produced, without the need for a mechanical chilling means. To provide such cold gases within the tent or dome like structure 2, the gases may be produced from a normal pressure cylinder, or may be machinery made.
    Other advantages are also provided by the dome-like structure of the present invention. In particular, the tent or dome like structure 2 will stop wind from blowing the snow away whilst it is being made, and it will also protect the snow from sun, rain and other natural environmental effects. Optionally, a floor could be provided, either in solid form or in the form of a soft zip-on construction, such being particularly useful in the case where it is desirable to completely isolate the closed environment from the external environment. The tent or dome-like structure can also be optionally provided such that it is provided with a hole therein, such that the snow-making device is provided externally therethrough and directed through the wall of the tent or dome-like structure. Another advantage also provided by the present invention is that advertising material may be provided on the external face of the tent or dome-like structure. Preferably, means is provided on the tent-like structure to recycle the gas, such as Nitrogen, such that same can be re-utilised. The dome-like structure also preferably is provided with a humidity exit means to exit any humidity in the closed environment.
    In a further preferred embodiment of the present invention, machinery is provided to extract nitrogen from the surrounding air, and compress same. This means that the nitrogen, or other appropriate gas, can be manufactured on site, rather than having to transport same to the location of the snow making machinery. This would also mean that after utilisation of the gas at the desired location, the gas can be released into the atmosphere, if desired, after use thereof.
    Obviously, in the implementation of the tent-like or dome-like arrangements, materials are preferably chosen such that they have good thermal insulative properties, such that the energy required to provide the controlled environment is minimised. Obviously the amount of thermal insulation will vary depending on the particular location, and the desired temperature difference which is required in comparison to the surrounding environment.
    It will be understood that numerous other modifications are envisaged to the present invention. For instance, if desired, a conveyor belt arrangement may be provided to move the snow from the location of production to the desired ground surface. The present invention may be preferably embodied such that the snow making device is portable, for instance mounted on a snow cat. Also, optionally, an air flow direction system can be incorporated into the controlled environment. This would preferably take the format of having a plurality of baffles.
    It will be understood by a person skilled in the art that numerous other variations or modifications are envisaged to the present invention. For example, instead of supplying the machinery 5, totally separated to the snow gun 10, an integrated system may be envisaged, wherein the air and water hoses 11 or the contents therein may be chilled or dehumidified. In such an embodiment, it would then only be necessary to supply the snow gun 10 within the tent or dome-like structure 2, further increasing the portability of the invention. Such an integrated system wherein the chilling and dehumidifying machinery 5 is incorporated with the snow gun 10, would be particularly suitable in Australian conditions, wherein there is a high probability that the chillers and dehumidifiers are required most of the time. In such conditions the chillers and dehumidifiers can be supplied underground at a central location at the point where the air and water hoses originate. Obviously, the tent or dome-like structure 2 may be portable, and it may incorporate a frame or have a frameless structure. An air supported frame is also envisaged, wherein an insulating air pocket is supplied between the closed environment and the external environment, for the dual purpose of insulating the two environments and also separating the structure 2.
    The present invention may therefore be utilised in a situation to supplement the natural snow falls in an environment, or provide snow in an environment where snow falls are not normally naturally occurring.

    Claims (8)

    1. A light-weight portable snow making apparatus which is easily transported for assembly and use at any selected location comprising an artificial environment (1) provided within a stowable tent or dome-like structure (2); means (5) for controlling the temperature and humidity within the environment and at least one snow gun (10) having at least the nozzle provided within or adjacent to the environment.
    2. A light-weight portable snow making apparatus according to claim 1, wherein the tent or dome-like structure comprises walls having a good thermal insulative characteristic.
    3. A light-weight portable snow making apparatus according to claim 2, wherein the walls consist of a double layered membrane wherein a gaseous substance having low temperature thermal characteristics is provided between the layers.
    4. A light-weight portable snow making apparatus according to any one of the preceding claims, wherein the conditions within the artificial environment are controlled by a chiller (7) and/or dehumidifier (8).
    5. A light-weight portable snow making apparatus according to any one of claims 1 to 3, wherein the conditions within the artificial environment are controlled by liquefied gases.
    6. A light-weight portable snow making apparatus according to any one of the preceding claims, wherein a plurality of nozzles (10) delivering cold gas are provided within the tent or dome-like structure (2).
    7. A light-weight portable snow making apparatus according to any one of the preceding claims wherein the tent or dome-like structure is provided with an outlet means to allow humidity within the structure to escape.
    8. A light-weight portable snow making apparatus according to any one of the preceding claims wherein the transporting means comprises a storage means (13) for the tent or dome-like structure (2).
    EP90904191A 1989-03-01 1990-03-01 Snowmaking device Revoked EP0461160B1 (en)

    Priority Applications (2)

    Application Number Priority Date Filing Date Title
    EP97107403A EP0798520B1 (en) 1989-03-01 1990-03-01 Snow making method and device
    EP00203328A EP1065456B1 (en) 1989-03-01 1990-03-01 Portable snow-making apparatus

    Applications Claiming Priority (5)

    Application Number Priority Date Filing Date Title
    AUPJ301989 1989-03-01
    AU3019/89 1989-03-01
    AU3133/89 1989-03-09
    AUPJ313389 1989-03-09
    PCT/AU1990/000083 WO1990010183A1 (en) 1989-03-01 1990-03-01 Snowmaking method and device

    Related Child Applications (1)

    Application Number Title Priority Date Filing Date
    EP97107403A Division EP0798520B1 (en) 1989-03-01 1990-03-01 Snow making method and device

    Publications (3)

    Publication Number Publication Date
    EP0461160A1 EP0461160A1 (en) 1991-12-18
    EP0461160A4 EP0461160A4 (en) 1992-01-15
    EP0461160B1 true EP0461160B1 (en) 1998-03-25

    Family

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    Family Applications (3)

    Application Number Title Priority Date Filing Date
    EP00203328A Expired - Lifetime EP1065456B1 (en) 1989-03-01 1990-03-01 Portable snow-making apparatus
    EP97107403A Expired - Lifetime EP0798520B1 (en) 1989-03-01 1990-03-01 Snow making method and device
    EP90904191A Revoked EP0461160B1 (en) 1989-03-01 1990-03-01 Snowmaking device

    Family Applications Before (2)

    Application Number Title Priority Date Filing Date
    EP00203328A Expired - Lifetime EP1065456B1 (en) 1989-03-01 1990-03-01 Portable snow-making apparatus
    EP97107403A Expired - Lifetime EP0798520B1 (en) 1989-03-01 1990-03-01 Snow making method and device

    Country Status (14)

    Country Link
    EP (3) EP1065456B1 (en)
    JP (2) JP3176060B2 (en)
    KR (1) KR100237971B1 (en)
    AT (3) ATE331922T1 (en)
    AU (1) AU640129B2 (en)
    CA (1) CA2050324C (en)
    DE (3) DE69034154T2 (en)
    DK (2) DK0461160T3 (en)
    ES (2) ES2116980T3 (en)
    FI (1) FI914055A0 (en)
    NO (1) NO913438D0 (en)
    NZ (1) NZ232751A (en)
    SG (1) SG47828A1 (en)
    WO (1) WO1990010183A1 (en)

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    WO1990010183A1 (en) 1989-03-01 1990-09-07 Andrew Boyd French Snowmaking method and device
    WO1992008936A1 (en) * 1990-11-07 1992-05-29 Andrew Boyd French Snowmaking method and device
    DE69224670D1 (en) * 1991-04-11 1998-04-09 Taikisha Kk Process for the formation and maintenance of an artificial snow cover
    AU654756B2 (en) * 1991-11-08 1994-11-17 Taikisha, Ltd. Method of maintaining snow surface
    EP0541867A1 (en) * 1991-11-12 1993-05-19 Taikisha, Ltd. Method of forming artificial snow surface, ice crusher machine used in the method and method of maintaining snow surface
    CA2115359A1 (en) * 1992-04-14 1993-10-28 Alexandr Konstantinovich Malakeev Method of gas generation and plant for effecting same
    FR2700835B1 (en) * 1993-01-26 1995-04-21 Technip Cie Snow production process and installation.
    FR2742851B1 (en) * 1995-12-26 1998-03-20 Guillaume Gil IMPROVEMENTS TO ARTIFICIAL SNOW MANUFACTURING PROCESSES, AND IMPLEMENTING DEVICES
    GB9826718D0 (en) * 1998-12-05 1999-01-27 Acer Snowmec Ltd Snow making machine
    US6151913A (en) * 1999-04-23 2000-11-28 Praxair Technology, Inc. Method and apparatus for agglomerating fine snow particles
    DE102004010093B3 (en) * 2004-02-27 2005-05-12 Innovag AG Aktiengesellschaft für innovative Industrietechnik Snow generation plant for indoor winter sports hall has snow chambers for generation and storage of artificial snow provided within housing having controlled climate
    DE102004021061B4 (en) * 2004-04-29 2006-04-20 GÖTZ, Werner Artificial snow production, e.g. for production of chilled pre-mixed concrete, avoids lump-formation by using draught tube baffle crystallizer vessel, fed with water and liquid nitrogen
    JP2008522813A (en) * 2004-12-13 2008-07-03 クール クリーン テクノロジーズ， インコーポレイテッド Carbon dioxide snow equipment
    AT508647B1 (en) 2009-09-11 2015-03-15 Tech Universität Wien METHOD AND DEVICE FOR PRODUCING ARTIFICIAL SNOW
    SE534323C2 (en) * 2009-11-16 2011-07-12 Icehotel Ab Method and apparatus for the manufacture of construction elements of artificial snow
    BE1019114A3 (en) * 2009-12-16 2012-03-06 Atlas Copco Airpower Nv DEVICE FOR MAKING ARTIFICIAL SNOW.
    CZ304511B6 (en) * 2010-08-02 2014-06-11 Adéla Voráčková Method of production of artificial snow and apparatus for carrying out this method

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    Also Published As

    Publication number Publication date
    SG47828A1 (en) 1998-04-17
    ATE272198T1 (en) 2004-08-15
    WO1990010183A1 (en) 1990-09-07
    EP0461160A4 (en) 1992-01-15
    DE69034228T2 (en) 2007-06-14
    NZ232751A (en) 1992-03-26
    JP2000035269A (en) 2000-02-02
    AU640129B2 (en) 1993-08-19
    EP1065456B1 (en) 2006-06-28
    ES2225913T3 (en) 2005-03-16
    DE69032180T2 (en) 1998-10-15
    EP0461160A1 (en) 1991-12-18
    DK0798520T3 (en) 2004-12-06
    EP1065456A1 (en) 2001-01-03
    CA2050324C (en) 1996-07-30
    EP0798520B1 (en) 2004-07-28
    FI914055A0 (en) 1991-08-28
    NO913438L (en) 1991-09-02
    DE69034228D1 (en) 2006-08-10
    ES2116980T3 (en) 1998-08-01
    DE69032180D1 (en) 1998-04-30
    ATE331922T1 (en) 2006-07-15
    JPH04503854A (en) 1992-07-09
    NO913438D0 (en) 1991-09-02
    AU5267990A (en) 1990-09-26
    EP0798520A2 (en) 1997-10-01
    KR920701768A (en) 1992-08-12
    JP3176060B2 (en) 2001-06-11
    DE69034154T2 (en) 2005-07-21
    EP0798520A3 (en) 1998-10-14
    ATE164442T1 (en) 1998-04-15
    DE69034154D1 (en) 2004-09-02
    DK0461160T3 (en) 1999-01-11
    KR100237971B1 (en) 2000-01-15

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