JP2005127577A - Snow-making equipment - Google Patents

Snow-making equipment Download PDF

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JP2005127577A
JP2005127577A JP2003362591A JP2003362591A JP2005127577A JP 2005127577 A JP2005127577 A JP 2005127577A JP 2003362591 A JP2003362591 A JP 2003362591A JP 2003362591 A JP2003362591 A JP 2003362591A JP 2005127577 A JP2005127577 A JP 2005127577A
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air
steam
outlet
water
mist
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JP4247982B2 (en
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Katsumi Fujima
克巳 藤間
Junji Matsuda
潤二 松田
Tomoiku Yoshikawa
朝郁 吉川
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Mayekawa Manufacturing Co
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Mayekawa Manufacturing Co
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25C—PRODUCING, WORKING OR HANDLING ICE
    • F25C3/00—Processes or apparatus specially adapted for producing ice or snow for winter sports or similar recreational purposes, e.g. for sporting installations; Producing artificial snow
    • F25C3/04—Processes or apparatus specially adapted for producing ice or snow for winter sports or similar recreational purposes, e.g. for sporting installations; Producing artificial snow for sledging or ski trails; Producing artificial snow
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25C—PRODUCING, WORKING OR HANDLING ICE
    • F25C2303/00—Special arrangements or features for producing ice or snow for winter sports or similar recreational purposes, e.g. for sporting installations; Special arrangements or features for producing artificial snow
    • F25C2303/048—Snow making by using means for spraying water
    • F25C2303/0481—Snow making by using means for spraying water with the use of compressed air

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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

<P>PROBLEM TO BE SOLVED: To provide snow-making equipment for improving the manufacturing efficiency of artificial snow by generating much artificial snow with a simple and low-cost structure. <P>SOLUTION: The snow-making equipment for generating the artificial snow by cooling atomized water drops by heat-insulating and expanding compressed air comprises a vapor generator for generating vapor; and an ejector section, where an air jet nozzle for jetting out the compressed air is open at the center and a vapor supply opening is open near the air jet nozzle. The compressed air is jetted out of the air jet nozzle to the ejector section, and vapor is sucked from the vapor jet nozzle by negative pressure formed near the vapor jet nozzle, thus generating the atomized water drops. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

本発明は、降雪機等に適用され、微粒化水滴が混合された圧縮空気を断熱膨張させて該微粒化水滴を冷却することにより人工雪を生成する造雪装置に関する。   The present invention relates to a snow making device that is applied to a snowfall machine or the like and generates artificial snow by adiabatic expansion of compressed air mixed with atomized water droplets to cool the atomized water droplets.

人工雪を生成してスノーガンによりスキー場に散布するスノーガン式人工降雪機は、水を微粒化した微粒化水滴を圧縮空気の断熱膨張によって冷却し、前記微粒化水滴と空気との噴流により該微粒化水滴を遠くへ飛散させることにより造雪している。
かかるスノーガン式人工降雪機の１つとして、特許文献１（特開平７−１９８２３８号公報）の技術が提供されている。 A snow gun type artificial snowfall machine that generates artificial snow and sprays it on a ski resort with a snow gun cools atomized water droplets obtained by atomizing water by adiabatic expansion of compressed air, and the fine particles are generated by a jet of the atomized water droplets and air. Snow is made by splashing dispersible water droplets far away.
As one of such snow gun type artificial snow machines, the technique of Patent Document 1 (Japanese Patent Laid-Open No. 7-198238) is provided.

特許文献１の技術においては、スノーガンのノズル内空気通路の加圧水と加圧空気とが混合する位置付近に、円環状リングを設けるとともに、該円環状リングの外周に水を噴出する複数の水噴出口を設け、該水噴出口から前記加圧水を噴出し前記円環状リングの外周に衝突させて、該円環状リングの両側に水膜を形成し、該水膜に前記加圧空気を流して前記水膜を微粒化した微粒化水滴を形成し、該微粒化水滴を前記ノズルの先端部から噴出するように構成している。   In the technique of Patent Document 1, an annular ring is provided in the vicinity of a position where pressurized water and pressurized air in a snow gun nozzle air passage are mixed, and a plurality of water jets that eject water to the outer periphery of the annular ring. An outlet is provided, and the pressurized water is ejected from the water ejection port to collide with the outer periphery of the annular ring, a water film is formed on both sides of the annular ring, and the pressurized air is flowed through the water film to A fine water droplet is formed by atomizing the water film, and the fine water droplet is ejected from the tip of the nozzle.

特開平７−１９８２３８号公報JP-A-7-198238

しかしながら、前記特許文献１の技術にあっては、微粒化水滴を形成する装置として、水を加圧しノズルまで圧送するためのポンプ、該ポンプからの加圧水を噴出し衝突させる水噴出機構や円環状リング等の格別な装置を必要とするため、装置が複雑かつ高コストとなる。
また、かかる従来技術にあっては、ノズル内空気通路に設置した円環状リングの外周に加圧水を衝突させて水膜を形成し、該加圧空気を流して微粒化水滴を形成するようになっているため、該微粒化水滴の形成量は前記円環状リングを含む加圧水の噴出、衝突機構の機能によって制限されていることから、加圧空気量あるいは加圧空気の流速を増大させても、これに比例して微粒化水滴の形成量つまり人工雪の生成量は増大せず、該人工雪の製造効率が低い。
等の問題点を有している。 However, in the technique of Patent Document 1, as a device for forming atomized water droplets, a pump for pressurizing water and pumping it to the nozzle, a water ejection mechanism for ejecting and colliding the pressurized water from the pump, and an annular shape Since a special device such as a ring is required, the device is complicated and expensive.
Further, in such a conventional technique, pressurized water is made to collide with the outer periphery of the annular ring installed in the air passage in the nozzle to form a water film, and the pressurized air is flowed to form atomized water droplets. Therefore, since the formation amount of the atomized water droplets is limited by the function of the pressurized water ejection and collision mechanism including the annular ring, even if the amount of pressurized air or the flow rate of pressurized air is increased, In proportion to this, the formation amount of atomized water droplets, that is, the generation amount of artificial snow does not increase, and the production efficiency of the artificial snow is low.
And so on.

従って、本発明はかかる従来技術の課題に鑑み、簡単かつ低コストの構造で以って、多量の人工雪を生成可能として人工雪の製造効率が向上された造雪装置を提供することを目的とする。   Accordingly, in view of the problems of the conventional technology, the present invention has an object to provide a snow making device capable of generating a large amount of artificial snow and improving the production efficiency of artificial snow with a simple and low-cost structure. And

本発明はかかる目的を達成するもので、その第１発明は、微粒化水滴が混合された圧縮空気を断熱膨張させて該微粒化水滴を冷却することにより人工雪を生成する造雪装置において、水を加熱して蒸気を生成する蒸気発生装置と、前記圧縮空気を噴出する空気噴出口が中央部に開口されるとともに該空気噴出口の近傍に前記蒸気発生装置からの蒸気を吹き出す蒸気吹出口が開口されるエジェクタ部とを備え、前記エジェクタ部に前記空気噴出口から圧縮空気を噴出せしめて前記蒸気吹出口の近傍に負圧を形成し該負圧により前記蒸気吹出口から蒸気を吸引して前記微粒化水滴を生成するように構成されてなることを特徴とする。   The present invention achieves such an object, the first invention is a snow making device that generates artificial snow by adiabatic expansion of compressed air mixed with atomized water droplets to cool the atomized water droplets, A steam generator for heating water to generate steam, and a steam outlet for blowing the steam from the steam generator in the vicinity of the air outlet while an air outlet for ejecting the compressed air is opened in the central portion An ejector portion that is opened, and a compressed air is ejected from the air outlet to the ejector portion to form a negative pressure in the vicinity of the steam outlet, and steam is sucked from the steam outlet by the negative pressure. It is configured to generate the atomized water droplets.

そしてかかる第１発明において好ましくは、前記蒸気発生装置を、水が収容された貯水槽と、該貯水槽内の水を加熱するヒーターと、該貯水槽内上部の気体空間と前記蒸気吹出口とを接続する蒸気通路とにより構成し、さらには、前記エジェクタ部の後流に、通路面積を連続的に拡大して形成され該エジェクタ部を経た前記圧縮空気を断熱膨張させることにより前記微粒化水滴を冷却するディフューザ部を連設する。   In the first aspect of the invention, preferably, the steam generator includes a water tank in which water is stored, a heater for heating the water in the water tank, a gas space in the upper part of the water tank, and the steam outlet. And the atomized water droplets by adiabatically expanding the compressed air that is formed by continuously expanding the passage area in the downstream of the ejector portion and passing through the ejector portion. A diffuser part for cooling the battery is connected.

かかる第１発明によれば、蒸気発生装置において、ヒーターにより水を加熱して連続的に蒸気を発生させるとともに、流路面積が絞られ前記蒸気発生装置に連通する蒸気吹出口が開口しているエジェクタ部に圧縮空気を空気噴出口から噴出せしめると、該エジェクタ部の蒸気吹出口近傍に負圧が形成され、該負圧発生に伴うエジェクタ作用によって、前記蒸気発生装置にて生成された蒸気を蒸気通路を通して蒸気吹出口から吸引する。   According to the first aspect of the invention, in the steam generator, the steam is continuously generated by heating water with the heater, and the steam outlet is opened with the flow passage area being narrowed and communicating with the steam generator. When compressed air is ejected from the air outlet to the ejector section, a negative pressure is formed in the vicinity of the steam outlet of the ejector section, and the steam generated by the steam generator is generated by the ejector action accompanying the generation of the negative pressure. Suction is taken from the steam outlet through the steam passage.

そして前記エジェクタ作用によって蒸気吹出口からエジェクタ部に連続的に吸引された蒸気は、該エジェクタ部の下流に連設され流路面積が連続的に拡大しているディフューザ部に導入され、該ディフューザ部における前記圧縮空気の断熱膨張によって冷却されて凝縮し、微粒化された水滴（微粒化水滴）となる。この微粒化水滴を低温の外気中に噴射することにより人工雪が生成される。
この場合、前記のように、蒸気吹出口近傍に空気流による負圧が形成されるので、空気流速を増大して負圧を大きくするに従い蒸気の凝縮点が下がることから、より低温で蒸気の水滴化がなされることとなり、空気流速つまり空気量の増大に比例した量の微粒化水滴つまり人工雪を生成することができる。 Then, the steam continuously sucked from the steam outlet to the ejector part by the ejector action is introduced into the diffuser part connected downstream of the ejector part and having a continuously increased flow area, and the diffuser part The water is cooled and condensed by the adiabatic expansion of the compressed air in the above to form atomized water droplets (atomized water droplets). Artificial snow is generated by spraying the atomized water droplets into the low-temperature outside air.
In this case, as described above, a negative pressure due to the air flow is formed in the vicinity of the steam outlet, so that the condensation point of the steam decreases as the air flow rate is increased and the negative pressure is increased. Water droplets are formed, and an amount of atomized water droplets, that is, artificial snow, can be generated in proportion to an increase in the air flow rate, that is, the amount of air.

また、第２発明は、ミスト発生槽内に収容された水中に空気を注入して気泡を発生させ、該気泡により該ミスト発生槽内上部に水滴ミストを生成するミスト発生装置と、圧縮空気を噴出する空気噴出口が中央部に開口されるとともに該空気噴出口の近傍に前記ミスト発生装置からの水滴ミストを吹き出すミスト吹出口が開口されるエジェクタ部とを備え、前記エジェクタ部に前記空気噴出口から圧縮空気を噴出せしめて前記ミスト吹出口の近傍に負圧を形成し該負圧により該ミスト吹出口から前記水滴ミストを吸引して前記微粒化水滴を生成するように構成されてなることを特徴とする。   Further, the second aspect of the invention provides a mist generating device that generates air bubbles by injecting air into water contained in a mist generating tank and generates water droplet mist in the upper part of the mist generating tank by the bubbles, and compressed air. And an ejector section having a mist outlet opening for opening water mist from the mist generating device in the vicinity of the air outlet and having a mist outlet opening opened in the vicinity of the air outlet. Compressed air is ejected from the outlet to form a negative pressure in the vicinity of the mist outlet, and the water droplet mist is sucked from the mist outlet by the negative pressure to generate the atomized water droplets. It is characterized by.

そしてかかる第２発明において好ましくは、前記ミスト発生装置を、多数の空気噴出口が穿設された隔壁にて前記ミスト発生槽内を区画し、該隔壁の下部側に導入された加圧空気を前記空気噴出口から該隔壁上部側に張られた水中に噴出させて前記気泡を発生させるように構成し、さらには、前記エジェクタ部の後流に、通路面積を連続的に拡大して形成され該エジェクタ部を経た前記圧縮空気を断熱膨張させることにより前記微粒化水滴を冷却するディフューザ部を連設する。   In the second aspect of the invention, preferably, the mist generating device is configured such that the mist generating tank is partitioned by a partition wall in which a large number of air jets are perforated, and pressurized air introduced to the lower side of the partition wall is The bubble is generated by jetting into the water stretched from the air outlet to the upper part of the partition wall, and further, the passage area is continuously enlarged in the wake of the ejector part. A diffuser part for cooling the atomized water droplets is provided continuously by adiabatic expansion of the compressed air that has passed through the ejector part.

かかる第２発明によれば、ミスト発生装置において、好ましくは、多数の空気噴出口が穿設されミスト発生槽内を区画する隔壁の下部側に導入された加圧空気を空気噴出口から隔壁上部側に張られた水中に噴出させて気泡を発生させて、ミスト発生槽内に水滴ミストを生成し、該水滴ミストをミスト吹出口からエジェクタ部に吹き出すことにより微粒化水滴を生成するので、ミスト発生槽内を区画した多数の空気噴出口が穿設された隔壁で区画し、該隔壁上部側に張られた水中に加圧空気を噴出させるという、前記第１発明よりもさらに簡単かつ低コストの装置で微粒化水滴を生成できる。   According to the second invention, in the mist generating apparatus, preferably, the compressed air introduced into the lower side of the partition wall in which a large number of air injection holes are bored to partition the mist generation tank is supplied from the air injection port to the upper part of the partition wall. Since the water droplets mist is generated in the mist generating tank by blowing out into the water stretched on the side, and the water droplet mist is blown out from the mist outlet to the ejector section. A simpler and lower cost than the first invention in which the generation tank is partitioned by a partition wall in which a large number of air outlets are perforated, and pressurized air is ejected into the water stretched on the upper side of the partition wall. It is possible to generate atomized water droplets with this device.

本発明によれば、エジェクタ部の蒸気吹出口近傍に圧縮空気の噴出により負圧を発生させることに伴うエジェクタ作用によって、蒸気発生装置からの蒸気を蒸気吹出口から吸引し、該エジェクタ部下流のディフューザ部における圧縮空気の断熱膨張によって吸引蒸気を冷却、凝縮せしめて、微粒化水滴を形成することができるので、空気流速を増大し蒸気吹出口近傍の負圧を大きくして蒸気の凝縮点を下げることにより、より低温で蒸気の水滴化が可能となり、空気量の増大に比例した量の微粒化水滴を生成することができる。
これにより、圧縮空気量を増減することにより微粒化水滴の量つまり造雪量を自在に調節できることとなって、圧縮空気量を増加するのみで多量の微粒化水滴つまり人工雪を容易に生成することが可能となり、人工雪の製造効率が向上する。 According to the present invention, the steam from the steam generator is sucked from the steam outlet by the ejector action accompanying the generation of the negative pressure by the jet of compressed air near the steam outlet of the ejector section, and the downstream of the ejector section. Aspiration steam can be cooled and condensed by adiabatic expansion of compressed air in the diffuser section to form atomized water droplets, so the air flow rate is increased and the negative pressure near the steam outlet is increased to increase the steam condensation point. By lowering, it becomes possible to make water droplets of steam at a lower temperature, and it is possible to generate atomized water droplets in an amount proportional to an increase in the amount of air.
As a result, the amount of atomized water droplets, that is, the amount of snow making can be adjusted freely by increasing / decreasing the amount of compressed air, and a large amount of atomized water droplets, that is, artificial snow can be easily generated simply by increasing the amount of compressed air. And the production efficiency of artificial snow is improved.

また、蒸気発生装置においてヒーターで水を加熱する等の簡単な手段によって連続的に蒸気を発生させてエジェクタ部におけるエジェクタ作用により該蒸気を吸引し、ディフューザ部における圧縮空気の断熱膨張により該蒸気から微粒化水滴を生成するので、前記特許文献１記載の従来技術のような水圧送用のポンプや円環状リング等の格別な装置を必要とせず、簡単な構造かつ低コストの装置で多量の人工雪を製造できる。   Further, steam is continuously generated by simple means such as heating water with a heater in the steam generator, the steam is sucked by the ejector action in the ejector section, and from the steam by adiabatic expansion of the compressed air in the diffuser section. Since atomized water droplets are generated, there is no need for a special device such as a hydraulic pump or an annular ring as in the prior art described in Patent Document 1, and a large amount of artificial water can be produced with a simple structure and low cost. Can produce snow.

また、第２発明のようなミスト発生装置を用いれば、ミスト発生槽内を区画した多数の空気噴出口が穿設された隔壁で区画し、該隔壁上部側に張られた水中に加圧空気を噴出させるという、前記第１発明よりもさらに簡単かつ低コストの装置で微粒化水滴を生成できる。   Further, if the mist generating apparatus as in the second invention is used, the mist generating tank is partitioned by a partition wall in which a large number of air jets are perforated, and pressurized air is submerged in the water stretched on the partition top side. It is possible to generate atomized water droplets with a simpler and lower cost device than the first invention.

以下、本発明を図に示した実施例を用いて詳細に説明する。但し、この実施例に記載されている構成部品の寸法、材質、形状、その相対配置などは特に特定的な記載がない限り、この発明の範囲をそれのみに限定する趣旨ではなく、単なる説明例にすぎない。
図１は本発明の第１実施例に係る造雪装置の縦断面図、図２は第２実施例に係る造雪装置のミスト発生装置近傍の要縦断面図である。 Hereinafter, the present invention will be described in detail with reference to the embodiments shown in the drawings. However, the dimensions, materials, shapes, relative arrangements, and the like of the component parts described in this example are not intended to limit the scope of the present invention only to specific examples unless otherwise specified. Only.
FIG. 1 is a longitudinal sectional view of a snow making device according to a first embodiment of the present invention, and FIG. 2 is a longitudinal sectional view of the vicinity of a mist generating device of the snow making device according to a second embodiment.

本発明の第１実施例に係る造雪装置を示す図１において、５０はエジェクタダクトで、流路断面積が入口部から滑らかに縮小されて、後述する蒸気吹出口５が開口される部位に前記流路断面積が最小となるエジェクタ部１４が形成されている。
１は主空気管で、内部に形成された主空気通路に図示しない空気圧縮機から所定の高圧に加圧された圧縮空気が通流するようになっている（点線矢印Ｕ３）。該主空気通路２の出口端部を構成する空気噴出口３は前記エジェクタ部１４の中央部に開口され、前記主空気通路２に導入された圧縮空気を該空気噴出口３から前記エジェクタ部１４に噴出せしめて（実線矢印Ｕ１）、前記蒸気吹出口５の近傍に負圧を形成し該負圧により前記蒸気吹出口５から蒸気を吸引可能に構成されている。
４は前記エジェクタダクト５０の内周と前記主空気管１の外周との間に形成された周部空気通路で、外部からの空気が該周部空気通路４を通って前記エジェクタ部１４に流入可能となっている。 In FIG. 1 showing the snow making device according to the first embodiment of the present invention, reference numeral 50 denotes an ejector duct, where the cross-sectional area of the flow path is smoothly reduced from the inlet, and a steam outlet 5 to be described later is opened. An ejector portion 14 having a minimum flow path cross-sectional area is formed.
Reference numeral 1 denotes a main air pipe through which compressed air pressurized to a predetermined high pressure flows from a not-shown air compressor through a main air passage formed therein (dotted line arrow U 3 ). The air jet 3 constituting the outlet end of the main air passage 2 is opened at the center of the ejector portion 14, and compressed air introduced into the main air passage 2 is passed from the air jet 3 to the ejector portion 14. (Negative arrow U 1 ), a negative pressure is formed in the vicinity of the steam outlet 5, and the steam can be sucked from the steam outlet 5 by the negative pressure.
Reference numeral 4 denotes a peripheral air passage formed between the inner periphery of the ejector duct 50 and the outer periphery of the main air pipe 1. Air from the outside flows into the ejector portion 14 through the peripheral air passage 4. It is possible.

１５は前記エジェクタ部１４の後流に形成されたディフューザ部で、前記エジェクタ部１４から流路断面積（通路面積）を連続的に拡大した末広がりのテーパ状通路に形成されている。１６は該ディフューザ部１５の下流側に連設され、前記ディフューザ部１５の出口側の最大流路断面積形成部と同一断面積に形成された出口通路である。
該ディフューザ部１５及び出口通路１６は、断熱材からなる断熱管１８の内部に形成され、前記エジェクタ部１４を経た圧縮空気が、該ディフューザ部１５及び出口通路１６で断熱膨張するようになっている。
尚、前記断熱材からなる断熱管１８に代えて、管体の内部に冷却用のブラインを通流した冷却管に構成することもできる。 Reference numeral 15 denotes a diffuser portion formed in the downstream of the ejector portion 14, which is formed into a tapered passage having a divergent width obtained by continuously enlarging the cross-sectional area (passage area) from the ejector portion 14. Reference numeral 16 denotes an outlet passage that is connected downstream of the diffuser portion 15 and has the same cross-sectional area as the maximum flow passage cross-sectional area forming portion on the outlet side of the diffuser portion 15.
The diffuser portion 15 and the outlet passage 16 are formed inside a heat insulating pipe 18 made of a heat insulating material, and the compressed air that has passed through the ejector portion 14 adiabatically expands in the diffuser portion 15 and the outlet passage 16. .
In addition, it can replace with the heat insulation pipe | tube 18 consisting of the said heat insulating material, and can also be comprised in the cooling pipe which flowed the cooling brine through the inside of a pipe body.

８は蒸気発生器で、次のように構成されている。
８１は内部の水室部１０に水が収容された貯水槽、９は図示しない電源に接続されて該貯水槽８１内の水を加熱するヒーターである。７は前記貯水槽８１内上部の蒸気室部１１と前記エジェクタ部１４に開口する１個または複数個（この例では２個）の蒸気吹出口５とを接続する蒸気通路である。該蒸気通路７と蒸気吹出口５とは環状通路６を介して連通されている。
８ａは前記貯水槽８１の下部に開口する水入口で、水供給管１２に接続されている。１３は該水供給管１２に設けられた水供給弁で、該水供給弁１３を開閉することにより、前記貯水槽８１内への水の補給量を制御して、前記水室部１０の水面を所定位置に保持するようになっている。 A steam generator 8 is configured as follows.
Reference numeral 81 denotes a water storage tank in which water is stored in the internal water chamber 10, and 9 is a heater that is connected to a power source (not shown) and heats the water in the water storage tank 81. A steam passage 7 connects the steam chamber portion 11 in the upper part of the water storage tank 81 and one or a plurality (two in this example) of steam outlets 5 opened to the ejector portion 14. The steam passage 7 and the steam outlet 5 are communicated with each other through an annular passage 6.
8 a is a water inlet opening at the lower part of the water storage tank 81 and connected to the water supply pipe 12. 13 is a water supply valve provided in the water supply pipe 12, and controls the replenishment amount of water into the water storage tank 81 by opening and closing the water supply valve 13, so that the water surface of the water chamber section 10 is controlled. Is held at a predetermined position.

かかる構成からなる造雪装置において、前記蒸気発生器においては、ヒーター９により水室部１０内の水を加熱して連続的に蒸気を発生させる。一方、空気圧縮機等の空気加圧手段からの圧縮空気は、前記主空気通路２を通って空気噴出口３から流路面積が絞られている前記エジェクタ部１４に噴出せしめる。該エジェクタ部１４へのかかる噴出空気によって該エジェクタ部１４の蒸気吹出口５近傍に負圧が形成され、該負圧発生に伴うエジェクタ作用によって、前記蒸気発生器８にて発生した蒸気を蒸気通路７を通して蒸気吹出口５からエジェクタ部１４へ吸引する（一点鎖線矢印Ｕ２）。 In the snow making device having such a configuration, in the steam generator, the water in the water chamber 10 is heated by the heater 9 to continuously generate steam. On the other hand, compressed air from an air pressurizing means such as an air compressor is ejected from the air ejection port 3 through the main air passage 2 to the ejector portion 14 whose flow area is restricted. A negative pressure is formed in the vicinity of the steam outlet 5 of the ejector section 14 by the air blown to the ejector section 14, and the steam generated by the steam generator 8 by the ejector action accompanying the generation of the negative pressure is a steam passage. 7 is sucked from the steam outlet 5 to the ejector section 14 (dashed line arrow U 2 ).

このとき、前記エジェクタ作用によって前記周部空気通路４から低温の空気が前記エジェクタ部１４に吸入されて前記蒸気と合流する。このようにすれば、外部からの低温空気により、ディフューザ部１５における蒸気の凝縮作用を助長でき造雪作用が促進される。
尚、前記周部空気通路４を設置せずに、エジェクタ部１４へは圧縮空気及び蒸気吹出口５からの蒸気を通流するようにしてもよい。 At this time, low temperature air is sucked into the ejector portion 14 from the peripheral air passage 4 by the ejector action and merges with the steam. If it does in this way, the condensing effect | action of the vapor | steam in the diffuser part 15 can be promoted with the low temperature air from the outside, and a snow making action is accelerated | stimulated.
In addition, you may make it let the vapor | steam from compressed air and the steam blower outlet 5 flow to the ejector part 14, without installing the said peripheral part air channel | path 4. FIG.

そして前記エジェクタ部１４におけるエジェクタ作用によって蒸気吹出口５から該エジェクタ部に連続的に吸引された蒸気は、該エジェクタ部１４の下流に連設され流路面積が連続的に拡大しているディフューザ部１５に導入される。該ディフューザ部１５は断熱構造となっているため、該蒸気はディフューザ部１５における前記圧縮空気の断熱膨張によって冷却されて凝縮し、微粒化された水滴（微粒化水滴）となる。この微粒化水滴を、前記出口通路１６を通って低温の外気中に噴射することにより人工雪が生成される。   The steam continuously sucked into the ejector part from the steam outlet 5 by the ejector action in the ejector part 14 is provided downstream of the ejector part 14 and has a continuously increasing flow passage area. 15 is introduced. Since the diffuser portion 15 has a heat insulating structure, the steam is cooled and condensed by the adiabatic expansion of the compressed air in the diffuser portion 15 to be atomized water droplets (atomized water droplets). Artificial snow is generated by spraying the atomized water droplets through the outlet passage 16 and into the low temperature outside air.

かかるエジェクタ作用において、前記のように、蒸気吹出口５近傍に空気流による負圧が形成されるので、空気の流速を増大して前記負圧を大きくするに従い蒸気の凝縮点が下がることから、前記負圧の形成によって、より低温で蒸気の水滴化がなされることとなる。これにより、前記エジェクタ部１４に噴出される空気の流速つまり空気量の増大に比例した量の微粒化水滴つまり人工雪を生成することができる。
従って、前記エジェクタ部１４に噴出される圧縮空気量を増減することにより、微粒化水滴の量つまり造雪量を自在に調節できることとなって、圧縮空気量を増加するのみで多量の微粒化水滴つまり人工雪を容易に生成することが可能となる。 In such an ejector action, as described above, a negative pressure due to an air flow is formed in the vicinity of the steam outlet 5, so that the condensation point of the steam decreases as the flow rate of air increases and the negative pressure increases. The formation of the negative pressure causes water droplets of the steam to be formed at a lower temperature. As a result, it is possible to generate atomized water droplets, that is, artificial snow, in an amount proportional to an increase in the flow velocity of air ejected to the ejector section 14, that is, the amount of air.
Therefore, by increasing or decreasing the amount of compressed air ejected to the ejector section 14, the amount of atomized water droplets, that is, the amount of snow making can be adjusted freely, and a large amount of atomized water droplets can be obtained simply by increasing the amount of compressed air. That is, it becomes possible to easily generate artificial snow.

図２に示される第２実施例において、２０はミスト発生装置で次のように構成されている。
２０ａはミスト発生槽で、その内部を、多数の空気噴出口２４が穿設された隔壁２７によって上下２つの室に区画されている。該隔壁２７の下部側は加圧空気が導入される加圧空気室２３が形成され、上部側には水２５が張られており、該加圧空気室２３内の加圧空気が該隔壁２７の空気噴出口２４を通って前記水２５内に噴出して水中に気泡を発生させるようになっている。
２９は前記エジェクタ部１４に開口するミスト吹出口、２８は前記ミスト発生槽２０ａ上部と該ミスト吹出口２９とを接続するミスト通路である。
また、２１は前記加圧空気生成用のファン、２２は該ファン２１と前記加圧空気室２３とを接続する加圧空気管である。
図２に記載を省略した分を含めて、その他の部分の構成は前記第１実施例と同様であり、これと同一の部材は同一の符号で示す。 In the second embodiment shown in FIG. 2, reference numeral 20 denotes a mist generator configured as follows.
Reference numeral 20a denotes a mist generating tank, which is divided into two upper and lower chambers by a partition wall 27 having a large number of air jets 24 formed therein. A pressurized air chamber 23 into which pressurized air is introduced is formed on the lower side of the partition wall 27, and water 25 is stretched on the upper side, and the pressurized air in the pressurized air chamber 23 is transferred to the partition wall 27. The air is blown into the water 25 through the air outlet 24 and bubbles are generated in the water.
Reference numeral 29 denotes a mist outlet opening in the ejector section 14, and 28 denotes a mist passage for connecting the upper portion of the mist generating tank 20 a and the mist outlet 29.
Reference numeral 21 denotes a fan for generating pressurized air, and reference numeral 22 denotes a pressurized air pipe connecting the fan 21 and the pressurized air chamber 23.
The structure of other parts including the part omitted in FIG. 2 is the same as that of the first embodiment, and the same members are denoted by the same reference numerals.

かかる第２実施例によれば、前記ミスト発生装置２０において、多数の空気噴出口２４が穿設されミスト発生槽２０ａ内を区画する隔壁２７の下部側に形成されている加圧空気室２３内に導入された加圧空気を、多数の前記空気噴出口２４から前記隔壁２７の上部側に張られた水２５内に噴出させて無数の気泡を発生させる。
そして、かかる無数の気泡によりミスト発生槽２０ａ内上部のミスト生成室２６内に無数の水滴ミストが生成され、該水滴ミストを、前記第１実施例と同様なエジェクタ作用によってミスト吹出口２９からエジェクタ部１４に吹き出すことにより微粒化水滴を生成する。
かかる第２実施例においては、ミスト発生槽２０ａ内を多数の空気噴出口２４が穿設された隔壁２７で区画し、該隔壁２７上部側に張られた水中に加圧空気を噴出させるという、前記第１発明よりもさらに簡単な装置で微粒化水滴を生成できる。 According to the second embodiment, in the mist generating device 20, the inside of the pressurized air chamber 23 formed on the lower side of the partition wall 27 in which a number of air jets 24 are bored to partition the mist generating tank 20a. The pressurized air introduced into the water is ejected from a large number of the air outlets 24 into the water 25 stretched on the upper side of the partition walls 27 to generate countless bubbles.
An infinite number of water droplet mists are generated in the mist generating chamber 26 in the upper part of the mist generating tank 20a by the infinite number of bubbles, and the water droplet mist is ejected from the mist outlet 29 by the same ejector action as in the first embodiment. By spraying on the part 14, atomized water droplets are generated.
In the second embodiment, the inside of the mist generating tank 20a is partitioned by a partition wall 27 having a large number of air outlets 24, and pressurized air is ejected into the water stretched on the upper side of the partition wall 27. Atomized water droplets can be generated with a simpler apparatus than the first invention.

本発明によれば、圧縮空気量を増加するのみで多量の微粒化水滴つまり人工雪を容易に生成することが可能となり、人工雪の製造効率が向上するとともに、従来技術のような水圧送用のポンプや円環状リング等の格別な装置を必要とせず、簡単な構造かつ低コストの装置で多量の人工雪を製造できる。   According to the present invention, it becomes possible to easily generate a large amount of atomized water droplets, that is, artificial snow, only by increasing the amount of compressed air, thereby improving the production efficiency of artificial snow and for water pressure feeding as in the prior art. A large amount of artificial snow can be produced with a simple structure and a low-cost device without requiring any special device such as a pump or an annular ring.

本発明の第１実施例に係る造雪装置の縦断面図である。1 is a longitudinal sectional view of a snow making device according to a first embodiment of the present invention. 第２実施例に係る造雪装置のミスト発生装置近傍の要縦断面図である。It is a longitudinal cross-sectional view of the vicinity of the mist generating apparatus of the snow making apparatus which concerns on 2nd Example.

符号の説明Explanation of symbols

１ 主空気管
２ 主空気通路
３ 空気噴出口
４ 周部空気通路
５ 蒸気吹出口
７ 蒸気通路
８ 蒸気発生器
８１ 貯水槽
９ ヒーター
１４ エジェクタ部
１５ ディフューザ部
１６ 出口通路
１８ 断熱管
２０ ミスト発生装置
２０ａ ミスト発生槽
２３ 加圧空気室
２４ 空気噴出口
２５ 水
２７ 隔壁
２８ ミスト通路
２９ ミスト吹出口
５０ エジェクタダクト DESCRIPTION OF SYMBOLS 1 Main air pipe 2 Main air passage 3 Air outlet 4 Circumferential air passage 5 Steam outlet
DESCRIPTION OF SYMBOLS 7 Steam passage 8 Steam generator 81 Water storage tank 9 Heater 14 Ejector part 15 Diffuser part 16 Outlet path 18 Heat insulation pipe 20 Mist generator 20a Mist generation tank 23 Pressurized air chamber 24 Air outlet 25 Water 27 Partition 28 Mist path 29 Mist Air outlet 50 Ejector duct

Claims (5)

微粒化水滴が混合された圧縮空気を断熱膨張させて該微粒化水滴を冷却することにより人工雪を生成する造雪装置において、水を加熱して蒸気を生成する蒸気発生装置と、前記圧縮空気を噴出する空気噴出口が中央部に開口されるとともに該空気噴出口の近傍に前記蒸気発生装置からの蒸気を吹き出す蒸気吹出口が開口されるエジェクタ部とを備え、前記エジェクタ部に前記空気噴出口から圧縮空気を噴出せしめて前記蒸気吹出口の近傍に負圧を形成し該負圧により前記蒸気吹出口から蒸気を吸引して前記微粒化水滴を生成するように構成されてなることを特徴とする造雪装置。   In a snow making device that generates artificial snow by adiabatic expansion of compressed air mixed with atomized water droplets and cooling the atomized water droplets, a steam generator that heats water to generate steam, and the compressed air And an ejector portion in which a steam outlet for blowing steam from the steam generator is opened in the vicinity of the air outlet, and the air jet is provided in the ejector portion. Compressed air is ejected from an outlet to form a negative pressure in the vicinity of the steam outlet, and the negative pressure causes the steam to be sucked from the steam outlet to generate the atomized water droplets. Snow making equipment. 前記蒸気発生装置は、水が収容された貯水槽と、該貯水槽内の水を加熱するヒーターと、該貯水槽内上部の気体空間と前記蒸気吹出口とを接続する蒸気通路とにより構成されてなることを特徴とする請求項１記載の造雪装置。   The steam generator is constituted by a water storage tank in which water is stored, a heater for heating the water in the water storage tank, and a steam passage connecting the gas space in the upper part of the water storage tank and the steam outlet. The snow making device according to claim 1, wherein: 微粒化水滴が混合された圧縮空気を断熱膨張させて該微粒化水滴を冷却することにより人工雪を生成する造雪装置において、ミスト発生槽内に収容された水中に空気を注入して気泡を発生させ、該気泡により該ミスト発生槽内上部に水滴ミストを生成するミスト発生装置と、前記圧縮空気を噴出する空気噴出口が中央部に開口されるとともに該空気噴出口の近傍に前記ミスト発生装置からの水滴ミストを吹き出すミスト吹出口が開口されるエジェクタ部とを備え、前記エジェクタ部に前記空気噴出口から圧縮空気を噴出せしめて前記ミスト吹出口の近傍に負圧を形成し該負圧により該ミスト吹出口から前記水滴ミストを吸引して前記微粒化水滴を生成するように構成されてなることを特徴とする造雪装置。   In a snow making device that generates artificial snow by adiabatic expansion of compressed air mixed with atomized water droplets and cooling the atomized water droplets, air is injected into water contained in a mist generating tank to form bubbles. A mist generator for generating water droplet mist in the upper part of the mist generating tank by the bubbles, and an air outlet for ejecting the compressed air is opened at a central portion, and the mist is generated in the vicinity of the air outlet. An ejector portion that opens a mist outlet that blows out water droplet mist from the apparatus, and forms a negative pressure in the vicinity of the mist outlet by causing the ejector portion to inject compressed air from the air outlet. The snow making device is configured to suck the water droplet mist from the mist outlet and generate the atomized water droplets. 前記ミスト発生装置は、多数の空気噴出口が穿設された隔壁にて前記ミスト発生槽内を区画し、該隔壁の下部側に導入された加圧空気を前記空気噴出口から該隔壁上部側に張られた水中に噴出させて前記気泡を発生させるように構成されてなることを特徴とする請求項３記載の造雪装置。   The mist generating device divides the inside of the mist generating tank by a partition wall in which a number of air jets are perforated, and pressurizes air introduced to the lower side of the partition from the air jet port to the upper side of the partition The snow making device according to claim 3, wherein the bubbles are generated by being ejected into water stretched on the surface. 前記エジェクタ部の後流に、通路面積を連続的に拡大して形成され該エジェクタ部を経た前記圧縮空気を断熱膨張させることにより前記微粒化水滴を冷却するディフューザ部を連設してなることを特徴とする請求項１または３の何れかの項に記載の造雪装置。   A diffuser portion that continuously forms a passage area and is formed in the wake of the ejector portion to cool the atomized water droplets by adiabatically expanding the compressed air that has passed through the ejector portion. The snow making device according to claim 1, wherein the snow making device is characterized in that:
JP2003362591A 2003-10-22 2003-10-22 Snow making equipment Expired - Fee Related JP4247982B2 (en)

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Cited By (8)

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WO2009077211A1 (en) * 2007-12-14 2009-06-25 Bächler Top Track Ag Arrangement, use of an arrangement, device, snow lance and method for producing ice nuclei and artificial snow
US9085003B2 (en) 2008-09-25 2015-07-21 Mitchell Joe Dodson Flat jet fluid nozzles with fluted impingement surfaces
US9170041B2 (en) 2011-03-22 2015-10-27 Mitchell Joe Dodson Single and multi-step snowmaking guns
KR101570495B1 (en) 2014-05-22 2015-11-19 한국해양과학기술원 Artificial Snow generating apparatus
US9395113B2 (en) 2013-03-15 2016-07-19 Mitchell Joe Dodson Nucleator for generating ice crystals for seeding water droplets in snow-making systems
US9631855B2 (en) 2011-03-22 2017-04-25 Mitchell Joe Dodson Modular dual vector fluid spray nozzles
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9470449B2 (en) 2007-12-14 2016-10-18 Baechler Top Track Ag Arrangement, use of an arrangement, device, snow lance and method for producing ice nuclei and artificial snow
EA021903B1 (en) * 2007-12-14 2015-09-30 Бэчлер Топ Трек Аг Arrangement, use of an arrangement, device, snow lance and method for producing ice nuclei and artificial snow
WO2009077211A1 (en) * 2007-12-14 2009-06-25 Bächler Top Track Ag Arrangement, use of an arrangement, device, snow lance and method for producing ice nuclei and artificial snow
US10527336B2 (en) 2007-12-14 2020-01-07 Baechler Top Track Ag Arrangement, use of an arrangement, device, snow lance and method for producing ice nuclei and artificial snow
US9085003B2 (en) 2008-09-25 2015-07-21 Mitchell Joe Dodson Flat jet fluid nozzles with fluted impingement surfaces
US9170041B2 (en) 2011-03-22 2015-10-27 Mitchell Joe Dodson Single and multi-step snowmaking guns
US9631855B2 (en) 2011-03-22 2017-04-25 Mitchell Joe Dodson Modular dual vector fluid spray nozzles
US9395113B2 (en) 2013-03-15 2016-07-19 Mitchell Joe Dodson Nucleator for generating ice crystals for seeding water droplets in snow-making systems
KR101570495B1 (en) 2014-05-22 2015-11-19 한국해양과학기술원 Artificial Snow generating apparatus
JP2021137775A (en) * 2020-03-09 2021-09-16 三菱重工冷熱株式会社 Diversion device
JP7033736B2 (en) 2020-03-09 2022-03-11 三菱重工冷熱株式会社 Divergence device
JP2022059624A (en) * 2020-03-09 2022-04-13 三菱重工冷熱株式会社 Flow dividing device
JP7187763B2 (en) 2020-03-09 2022-12-13 三菱重工冷熱株式会社 flow diverter

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