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WO1998006988A1 - Procede et dispositif pour fabriquer de la neige - Google Patents

Procede et dispositif pour fabriquer de la neige Download PDF

Info

Publication number
WO1998006988A1
WO1998006988A1 PCT/AU1997/000490 AU9700490W WO9806988A1 WO 1998006988 A1 WO1998006988 A1 WO 1998006988A1 AU 9700490 W AU9700490 W AU 9700490W WO 9806988 A1 WO9806988 A1 WO 9806988A1
Authority
WO
WIPO (PCT)
Prior art keywords
evaporator
rotatable
water
snow
disc
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.)
Ceased
Application number
PCT/AU1997/000490
Other languages
English (en)
Inventor
Herman Arnolt August Eden
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.)
SNOW FUN FACTORY Pty Ltd
Original Assignee
SNOW FUN FACTORY 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 SNOW FUN FACTORY Pty Ltd filed Critical SNOW FUN FACTORY Pty Ltd
Priority to AU36144/97A priority Critical patent/AU3614497A/en
Publication of WO1998006988A1 publication Critical patent/WO1998006988A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

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
    • F25C1/00—Producing ice
    • F25C1/12—Producing ice by freezing water on cooled surfaces, e.g. to form slabs
    • F25C1/14—Producing ice by freezing water on cooled surfaces, e.g. to form slabs to form thin sheets which are removed by scraping or wedging, e.g. in the form of flakes
    • F25C1/142—Producing ice by freezing water on cooled surfaces, e.g. to form slabs to form thin sheets which are removed by scraping or wedging, e.g. in the form of flakes from the outer walls of cooled bodies
    • 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

  • This invention is concerned with a method and apparatus for artificially making "real" snow as distinct from artificial snow.
  • Patent Applications PCT/AU85/00267 which deal with frozen water absorbent polymeric granules and PCT/AU 86/00158 which deals with the freezing and subsequent crushing of a foam produced from an aqueous mixture containing a surfactant.
  • a method of producing a snow like product comprising the steps of:- spraying on to the surface of a rotatable refrigerant evaporator a fine mist of water whereby in use, the operational parameters of said evaporator are such as to accumulate a layer of individual ice crystals; and, removing accumulated ice crystals from said rotatable evaporator by one or more mechanical scrapers.
  • the rotatable evaporator may comprise a rotating cylindrical drum through which refrigerant medium is circulated.
  • the rotatable evaporator comprises a rotating disc through which refrigerant medium is circulated.
  • the rotatable evaporator comprises a plurality of rotatable discs.
  • the water being sprayed as a fine mist may include a surfactant or other surface tension modifier to selectively alter the shape and size of ice crystals formed on the surface of the evaporator.
  • a surfactant or other surface tension modifier to selectively alter the shape and size of ice crystals formed on the surface of the evaporator.
  • the water to be sprayed on to the rotatable evaporator is applied as an atomised mist over a preselected region or regions of said rotatable evaporator.
  • FIG 1 illustrates a schematic cross section of a rotatable disc evaporator.
  • FIG 1 illustrates a rotatable evaporator of the type employed in United States Patents No. 5157939 and No. 5363659 to Heat and Control Pty Ltd. These patents relate to methods and apparatus for producing flake ice for packaging of frozen foods and the like.
  • the disc rotates partially submerged in a container of water extending between 0° and 180° from a scraper blade or otherwise has a spray of water in the form of coarse droplets directed on to the disc at about 90° from the scraper blade, both in the direction of rotation of the disc.
  • the water is sprayed onto the disc to form a continuous film on the disc surface but in the embodiment described in these patent specifications, only 90° of rotation is provided before the sheet ice so formed is removed by the harvesting blades.
  • a contiguous thin layer of sheet ice of from about 1 mm to about 4mm will be formed.
  • the layer of sheet ice is removed from the rotatable drum by scraper blades which fracture the ice sheet to facilitate removal.
  • the present invention preferably employs a single or multi disc apparatus of the type described in United States Patents 5157939 or 5363659 with suitable modifications to permit the method of the invention to be practised.
  • the rotatable disc 1 has a scraper blade 2 positioned at about 90° from the vertical in the direction of rotation of the disc as shown by the arrow.
  • a plurality of atomizing nozzles 6 are fitted to spray bars 3, 4 and 5 are provided in the quadrants 90°-180°, 180°-270° and 270°-360° relative to a vertical line extending from the rotational axis of the disc.
  • Refrigerant medium from a refrigerating plant (not shown) circulates throughout the hollow interior of disc 1 via hollow shaft 7 upon which disc 1 rotates.
  • Atomised water particles contacting the disc in the 90°-180° quadrant form a thin layer of discrete individual crystals on the surface of disc 1 , the crystals growing in a direction normal to the disc surface.
  • the snow crystals initially formed have a configuration in the form of a six pointed star similar to "real" snowflakes.
  • the layer of crystals may be controlled to emulate fine dry powder snow, rime or hoar frost in a layer of from 1mm to about 6mm in thickness which is easily removed from the disc by scraper blades 2.
  • the degree of adhesion to the disc surface is minimal compared to a contiguous sheet of ice as formed in the flake ice operation.
  • hardened and sharpened steel blades are spaced at a predetermined distance from the disc surface to avoid frictional contact therewith.
  • the snow layer being quite soft, is easily removed from the disc surface by a hard plastics blade such as nylon or the like which may be placed in direct contact with the disc surface without fear of damage either to the blade or the disc surface.
  • Snow crystals removed from the disc surface are collected in a hopper or the like for subsequent removal by a screw auger or compressed air conveyor to a selected site such as the surface of an indoor ski slope.
  • surfactant having ionic, non-ionic or amphoteric properties may be employed.
  • Such surfactants may be typically selected from alkyl sulphates, alkyl-aryl sulphonates, polyethylene axide derivatives or the like.
  • Suitable controls in the form of programmable logic controllers provide control over all operational parameters for the evaporator disc and atomising sprays to selectively produce a snow product of a desired consistency and at a predetermined production rate.
  • rate of rotation of the evaporator disk is greater than the rotation rate employed in the manufacture of flake ice for which the apparatus was designed, an equivalent output of about 2 tonnes/24hrs of snow are produced from each 600mm diameter disc.
  • the rotatable disc evaporator is connected to a conventional compressor/condenser unit of 8-10 kilowatts of refrigeration capacity for each rotatable disc.
  • the rate of production of snow can be regulated by water temperature , water spray rate, disc rotation rate, refrigerant type, and the suction temperature of the refrigerant which typically may be in the range - 10°C to -25°C, preferably in the range -10°C and -15°C.

Landscapes

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

Abstract

Dispositif pour fabriquer de la neige composé d'une pluralité d'évaporateurs rotatifs (1)creux en forme de disques à travers lesquels un médium réfrigérant circule via une colonne creuse (7). Des buses d'atomisation (6) fixées à des barres gicleuses (3, 4, 5) dirigent un brouillard d'eau finement atomisée vers la surface du disque (1). Des cristaux de neige sont formés par l'application répétée de brouillard d'eau atomisée sur les cristaux déjà formés et sont enlevés du disque (1) par une lame de raclage en plastique (2).
PCT/AU1997/000490 1996-08-09 1997-08-04 Procede et dispositif pour fabriquer de la neige Ceased WO1998006988A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU36144/97A AU3614497A (en) 1996-08-09 1997-08-04 Method and apparatus for making snow

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AUPO1533A AUPO153396A0 (en) 1996-08-09 1996-08-09 Method and apparatus for making snow
AUPO1533 1996-08-09

Publications (1)

Publication Number Publication Date
WO1998006988A1 true WO1998006988A1 (fr) 1998-02-19

Family

ID=3795847

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/AU1997/000490 Ceased WO1998006988A1 (fr) 1996-08-09 1997-08-04 Procede et dispositif pour fabriquer de la neige

Country Status (2)

Country Link
AU (1) AUPO153396A0 (fr)
WO (1) WO1998006988A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004027329A1 (fr) * 2002-09-17 2004-04-01 Kang Sung-Mo Dispositif de production de neige artificielle

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01234770A (ja) * 1988-03-15 1989-09-20 Tetsuo Yotsuda 人工雪の製造装置
EP0355745A2 (fr) * 1988-08-23 1990-02-28 Ernst Manfred Küntzel GmbH Malereibetrieb Dispositif de fabrication de grains de glace
JPH03122475A (ja) * 1989-10-02 1991-05-24 Toshiba Corp 蓄熱用製氷装置
WO1993000561A1 (fr) * 1991-06-25 1993-01-07 North Star Ice Equipment Corporation Machine produisant des flocons de glace
JPH07332822A (ja) * 1994-06-10 1995-12-22 Nkk Corp 人工雪発生方法

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01234770A (ja) * 1988-03-15 1989-09-20 Tetsuo Yotsuda 人工雪の製造装置
EP0355745A2 (fr) * 1988-08-23 1990-02-28 Ernst Manfred Küntzel GmbH Malereibetrieb Dispositif de fabrication de grains de glace
JPH03122475A (ja) * 1989-10-02 1991-05-24 Toshiba Corp 蓄熱用製氷装置
WO1993000561A1 (fr) * 1991-06-25 1993-01-07 North Star Ice Equipment Corporation Machine produisant des flocons de glace
JPH07332822A (ja) * 1994-06-10 1995-12-22 Nkk Corp 人工雪発生方法

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN, Vol. 015, No. 325; & JP,A,03 122 475 (TOSHIBA CORP), 24 May 1991. *
PATENT ABSTRACTS OF JAPAN, Vol. 13, No. 565; & JP,A,01 234 770 (YOTSUDA), 20 September 1989. *
PATENT ABSTRACTS OF JAPAN, Vol. 96, No. 004; & JP,A,07 332 822 (NKK CORP), 22 December 1995. *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004027329A1 (fr) * 2002-09-17 2004-04-01 Kang Sung-Mo Dispositif de production de neige artificielle
CN100346115C (zh) * 2002-09-17 2007-10-31 金主植 人工造雪设备

Also Published As

Publication number Publication date
AUPO153396A0 (en) 1996-08-29

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