JPH06180169A - Artificial snowmaking machine - Google Patents
Artificial snowmaking machineInfo
- Publication number
- JPH06180169A JPH06180169A JP33160792A JP33160792A JPH06180169A JP H06180169 A JPH06180169 A JP H06180169A JP 33160792 A JP33160792 A JP 33160792A JP 33160792 A JP33160792 A JP 33160792A JP H06180169 A JPH06180169 A JP H06180169A
- Authority
- JP
- Japan
- Prior art keywords
- ice
- ice pieces
- air
- pieces
- transportation
- 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.)
- Granted
Links
- 238000002156 mixing Methods 0.000 claims description 8
- 238000005507 spraying Methods 0.000 claims description 6
- 230000001737 promoting effect Effects 0.000 claims description 2
- 238000002844 melting Methods 0.000 abstract description 9
- 230000008018 melting Effects 0.000 abstract description 9
- 239000006185 dispersion Substances 0.000 abstract 3
- 238000007599 discharging Methods 0.000 abstract 2
- 238000000034 method Methods 0.000 description 21
- 239000000843 powder Substances 0.000 description 12
- 239000002245 particle Substances 0.000 description 6
- 230000005484 gravity Effects 0.000 description 4
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Air Transport Of Granular Materials (AREA)
- Filling Or Emptying Of Bunkers, Hoppers, And Tanks (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、氷片を所定の場所に輸
送した後、雪状に粉砕された氷をゲレンデに散布する人
工降雪技術に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an artificial snowfall technique for transporting ice pieces to a predetermined place and then spraying snow-crushed ice on a slope.
【０００２】[0002]
【従来の技術】従来、空気輸送装置或いはベルトコンベ
ヤ等により氷片を１００ｍ程度輸送し、輸送ラインから
砕氷を分離した後、この氷片を固定された微粉砕機によ
り雪状に粉砕し、ゲレンデに散布することが行われてい
る。2. Description of the Related Art Conventionally, ice pieces are transported by a pneumatic conveyor or a belt conveyor for about 100 m to separate the crushed ice from the transportation line. Is being applied to.
【０００３】[0003]
【発明が解決しようとする課題】しかし、氷片を３００
ｍ以上空気輸送することは、輸送中の氷片の融解が引き
金となって起こる閉塞の問題があり、技術的に不可能で
あった。本発明は上記のような問題点を解消できるよう
にした人工降雪装置を提供するものである。However, 300 pieces of ice pieces are used.
It was technically impossible to carry out pneumatic transportation of m or more because there is a problem of blockage caused by melting of ice pieces during transportation. The present invention provides an artificial snowfall device capable of solving the above problems.
【０００４】[0004]
【課題を解決するための手段】本発明の人工降雪装置
は、入り口に供給した氷片を出口に向けて降下させる管
状の傾斜通路を設け、該傾斜通路に氷片の降下を促進す
る空気流付勢手段を設け、出口に空気と氷片を分離する
分離機、氷片を排出する排出機、氷片を雪状にする粉砕
機、及びその散布手段からなることを特徴とする。The artificial snowfall device of the present invention is provided with a tubular inclined passage for lowering the ice pieces supplied to the inlet toward the outlet, and the airflow for promoting the downward movement of the ice pieces in the inclined passage. It is characterized in that it comprises an energizing means and an outlet for separating air and ice pieces, an ejector for ejecting ice pieces, a crusher for making ice pieces snow-like, and a spraying means thereof.
【０００５】氷片の輸送、即ち、この発明での輸送とは
氷片の重力による降下とその降下を付勢する空気流とに
よるものであり、これに関しては、氷温を−３℃以下、
氷片の少なくとも９０重量％を５ｍｍ目のふるいを通過
せず、４０ 目のふるいを通過する範囲内の大きさと
し、氷片投入口における空気温度を１０℃以下、空気速
度を２０〜３０ｍ／sec とし、かつ投入氷片と投入空気
の混合比を、投入空気重量に対する投入氷片重量の比を
３〜７としたことを特徴としている。The transportation of ice pieces, that is, the transportation in the present invention, is due to the gravity-induced drop of the ice pieces and the air flow for urging the drop, and in this regard, the ice temperature is −3 ° C. or less,
At least 90% by weight of the ice pieces should have a size within the range of passing through the 40th sieve without passing through the 5mm sieve, and the air temperature at the ice piece inlet should be 10 ° C or less and the air velocity should be 20 to 30m / sec. In addition, the mixing ratio of the input ice pieces and the input air is 3 to 7 as the ratio of the weight of the input ice pieces to the weight of the input air.
【０００６】[0006]
【作用】管状の傾斜通路を設け、氷片の温度、粒度；空
気の温度、流速；氷片と空気の混合比等の条件を考慮す
ることにより、輸送中の氷片の融解が引き金となって起
こる閉塞の問題を生ずることが無く、詳しくは、氷片の
輸送途中における空気流との相対速度が小さくなり、氷
片と空気の熱交換量が低減されることにより融解量が少
なくなり、氷片を長距離輸送することができる。なお、
本発明は、スキー場での雪作りを１０月下旬〜１２月初
旬の気温（標高に異なるが１０℃以下）で行うことを意
図しているものである。また、撒氷機を接続することに
より、ゲレンデに雪状に粉砕され氷を散布することがで
きる。[Operation] By providing conditions such as the temperature and particle size of ice pieces, the temperature and flow rate of air, the mixing ratio of ice pieces and air, etc. by providing a tubular inclined passage, the melting of ice pieces during transportation is triggered. There is no problem of clogging that occurs due to the decrease in the relative velocity with the air flow during the transportation of the ice pieces, and the heat exchange amount between the ice pieces and the air is reduced, so that the melting amount is reduced, The ice pieces can be transported over long distances. In addition,
The present invention is intended to perform snowmaking at a ski resort at a temperature from late October to early December (at different altitudes, but 10 ° C or lower). Further, by connecting an ice crusher, it is possible to smash ice on the slopes in a snowy manner.
【０００７】[0007]
【実施例】製氷設備はゲレンデ上部に位置する。散布手
段は製氷設備より下に位置し、上から下に向けて氷片を
移行させる。対象とする好適なゲレンデは長さ３００ｍ
以上であり下り勾配が１５度前後以上である。氷片を下
り勾配に敷設された管状傾斜通路を使い輸送する。氷片
は重力により、自然に降下するが、傾斜の勾配や摩擦が
一様でないために輸送速度が安定せず、部分的に滞留し
閉塞しやすい。氷片の降下を促進するように、空気流を
つくると、円滑に輸送が出来る。Example: The ice making facility is located above the slope. The spraying means is located below the ice making equipment and moves the ice pieces from top to bottom. The target slope is 300m long
It is above, and the descending gradient is around 15 degrees or more. The ice pieces will be transported using a tubular inclined passage that is laid on a downward slope. The ice pieces naturally fall due to gravity, but the transportation speed is not stable because the slope and friction are not uniform, and the ice pieces are partially retained and easily blocked. If you create an airflow to promote the descent of ice chips, you can transport it smoothly.
【０００８】空気流の作り方としては、傾斜通路上部か
ら大気圧より高い空気圧をかけ風速を得る方法（圧送と
呼ぶ）と傾斜通路下部から空気を吸引し、内部の圧力を
空気圧より低い圧力にし氷片の降下を付勢する風速を得
る方法（吸引と呼ぶ）がある。 管径２５０ のパイプ
を使い毎時２０ton の氷を風速２４／sec の空気流を使
い500 ｍ輸送する場合、傾斜のない平地では全圧力損失
が３６５０ Aqに達する。 従って圧送の場合、３６５
０ Aq以上加圧できるブロワが、吸引の場合、−As a method of producing an air flow, there is a method of obtaining a wind speed by applying an air pressure higher than atmospheric pressure from the upper part of the inclined passage (called pressure feeding), and air is sucked from the lower part of the inclined passage to make the internal pressure lower than the air pressure. There is a method (called suction) to obtain the wind speed that urges the descent of one piece. When a pipe with a diameter of 250 is used and 20 ton of ice per hour is transported for 500 m using an air stream with a wind speed of 24 / sec, the total pressure loss reaches 3650 Aq on flat land without slope. Therefore, in case of pressure feeding, 365
If the blower that can pressurize more than 0 Aq is suction,
【０００９】３６５０ Aq以上の吸引ができる真空ポン
プが必要になる。一方、ゲレンデ傾斜角が１５°の場
合、傾斜の影響により全圧力損失は、１７８０ Aqまで
減少し、平地で輸送する場合に比べ半分以下の馬力のブ
ロワ又は真空ポンプにより、空気を付勢するだけで容易
に氷片を輸送する事ができる。また、氷片と空気速度の
比は平地では６１％であるが、傾斜地の場合、８７％ま
で向上し、輸送時間も１０秒短縮し、高速にて輸送する
事が可能となる。図１に圧送式空気輸送、図２に吸引式
空気輸送の機器構成を示す。A vacuum pump capable of suction of 3650 Aq or more is required. On the other hand, when the slope inclination angle is 15 °, the total pressure loss is reduced to 1780 Aq due to the influence of the inclination, and air is energized by a blower or vacuum pump that has a horsepower of less than half that of transporting on level ground. You can easily transport ice chips with. In addition, the ratio of ice fragments to air velocity is 61% on flat land, but it increases to 87% on sloping ground, transport time is shortened by 10 seconds, and high-speed transportation becomes possible. FIG. 1 shows the equipment configuration of pressure-fed air transportation, and FIG. 2 shows the equipment configuration of suction air transportation.
【００１０】貯氷室４に、図示しない自動製氷機で製氷
された氷片を貯蔵しておき、スリューフィーダ５等によ
り輸送管１０に定量排出する。自動製氷機で製氷された
氷片は種々の形状を呈するが自動製氷機の構造により板
状のプレートアイス、薄片状のフレークアイスに大別さ
れる。板状のプレートアイスの場合、板厚は常に一定で
あるが平面的な形状は任意である。その平面的な大きさ
は氷厚により変化するが測定した結果によれば氷厚が約
１５ のとき、平面的な大きさ（ふるいを通過する範
囲）は約６〜４０ 目の範囲に重量にして９０％以上が
分布し、６ 以下の微粉は約３％以下である。フレーク
アイスは製氷方法から類推すると更により多くの微粉が
存在するものと考えられる。In the ice storage chamber 4, ice pieces produced by an automatic ice making machine (not shown) are stored, and a fixed amount is discharged to the transport pipe 10 by the slew feeder 5 or the like. Ice pieces produced by an automatic ice maker have various shapes, but they are roughly classified into plate-shaped plate ice and flaky ice flakes depending on the structure of the automatic ice maker. In the case of plate-shaped plate ice, the plate thickness is always constant, but the planar shape is arbitrary. The plane size varies depending on the ice thickness, but according to the measurement results, when the ice thickness is about 15, the plane size (the range passing through the sieve) is set to the weight of about 6 to 40 meshes. 90% or more are distributed, and fine powder of 6 or less is about 3% or less. By analogy with the ice making method, it is thought that flake ice contains more fine powder.
【００１１】氷片の粒度が小さいほど、重量当たりの空
気と接触する表面積が大きくなるため容易に溶解する。
しかし、一方、空気輸送の観点からみた場合、粉体の粒
径が小さく雪状に近くなるほど管内に浮遊するため、空
気の圧力損失が小さく、小さなブロワにより容易に輸送
できる。また、氷片は融解すると、水が発生し、微粉が
溶け込みシャーベット状の雪となり、管壁に付着し閉塞
の原因となる。一方大きな氷片は、融解しにくい特性は
あるものの輸送管の中に浮遊しにくくなり管の底部に接
触しながら輸送される為に圧力損失が大きく流動性も悪
く閉塞の原因となる。従って、融解を最少限にし、かつ
圧力損失を長距離輸送するために適度に押さえる為に
は、適正な粒度にして空気輸送する必要がある。The smaller the particle size of the ice pieces, the larger the surface area in contact with air per weight and the easier the ice pieces will melt.
On the other hand, from the viewpoint of pneumatic transportation, the smaller the particle size of the powder is, the closer it is to snow-like particles, and the more it floats in the tube. Therefore, the pressure loss of air is small and the powder can be easily transported by a small blower. Further, when the ice pieces are melted, water is generated and fine powder is melted to form snow in the form of sherbet, which adheres to the pipe wall and causes clogging. On the other hand, a large piece of ice has a characteristic of being less likely to melt, but is less likely to float in the transport pipe and is transported while contacting the bottom of the pipe, resulting in a large pressure loss and poor fluidity, which causes clogging. Therefore, in order to minimize melting and moderately suppress pressure loss for long-distance transportation, it is necessary to carry out pneumatic transportation with an appropriate particle size.
【００１２】製氷効率及び微粉の発生が少ないことから
氷の長距離空気輸送には自動製氷機によるプレート状の
氷片が適しており、実験結果から、氷片の少なくとも９
０重量％を５ｍｍ目のふるいを通過せず、４０ 目のふ
るいを通過する範囲内の大きさとしていることが長距離
空気輸送の好適な条件である。この場合、砕く前の板氷
は、１０〜２０ｍｍの厚さとするのが望ましい。Since ice-making efficiency and generation of fine powder are small, plate-like ice pieces by an automatic ice-making machine are suitable for long-distance pneumatic transportation of ice.
It is a suitable condition for long-distance pneumatic transportation that 0% by weight does not pass through the sieve with 5 mm and has a size within the range of passing through the sieve with 40 mm. In this case, it is desirable that the plate ice before crushing has a thickness of 10 to 20 mm.
【００１３】図１に示す圧送の場合、ブロワ１の出口温
度が上昇するため、アフタークーラ２で空気を冷却し、
１０℃以下にする。そして、氷片を貯氷室４からスリュ
ーフィーダ５等により定量排出し、輸送管１０の途中に
設けたロータリバルブ３を介して輸送管１０内に投入す
る。図２に示す吸引真空輸送の場合、氷片をホッパー状
の投入口６を介して吸入される空気と共に輸送管内に落
とし込む。この場合にも、吸入される空気の温度は１０
℃以下が好適である。In the case of pressure feeding shown in FIG. 1, since the outlet temperature of the blower 1 rises, the aftercooler 2 cools the air,
Keep below 10 ° C. Then, the ice pieces are quantitatively discharged from the ice storage chamber 4 by the slew feeder 5 and the like, and are put into the transportation pipe 10 through the rotary valve 3 provided in the middle of the transportation pipe 10. In the suction vacuum transportation shown in FIG. 2, the ice pieces are dropped into the transportation pipe together with the air sucked through the hopper-shaped charging port 6. Even in this case, the temperature of the intake air is 10
C. or less is preferable.
【００１４】微粉の融解による閉塞を防止するため、投
入口に於ける風速は２０ｍ／sec 以上に設定する。風速
が早い程、管壁に融解したシャーベット状の微粉は付着
しにくくなり、実験によれば、実用的には２０ｍ／sec
以上であれば、付着したシャーベット状の微粉は成長し
ない。輸送管の末端では、空気が膨脹するため、風速は
増大し、１０００ｍ輸送する場合、末端の風速は４０ｍ
／sec 以上に達する。投入口で３０ｍ／sec 以上の場合
は、末端で風速が過大となるし、ブロアーの容量も過大
なものを要する。In order to prevent blockage due to melting of fine powder, the wind speed at the inlet is set to 20 m / sec or more. The higher the wind speed, the more difficult it becomes for the sherbet-like fine powder that has melted to adhere to the tube wall, and according to experiments, it was practically 20 m / sec.
If it is above, the sherbet-like fine powder adhered will not grow. At the end of the transport pipe, the air expands, so the wind speed increases, and when transporting 1000 m, the wind speed at the end is 40 m.
/ Sec or more is reached. If the inlet speed is 30 m / sec or more, the wind speed will be excessive at the end and the blower capacity will also be excessive.
【００１５】輸送管の内径が２５０ 、氷片の輸送重量
が毎時２０トン、投入口風速２５ｍ／sec としたとき、
混合比は約３．５となる。このとき、実験によれば氷片
は、風速の６０〜７０％の流速で輸送される。１０００
ｍ輸送する場合にも、１分以内で輸送できる。When the inner diameter of the transportation pipe is 250, the transportation weight of the ice pieces is 20 tons per hour, and the inlet air velocity is 25 m / sec,
The mixing ratio is about 3.5. At this time, according to the experiment, the ice pieces are transported at a flow velocity of 60 to 70% of the wind velocity. 1000
In case of transportation by m, it can be transported within 1 minute.
【００１６】輸送時の空気温度が１０℃以下であれば、
空気自身の膨脹及び氷による冷却により、輸送管の末端
では、ほぼ０℃まで冷却される。一方、氷片は、空気か
らの入熱により温度が上昇するが、−３℃以下の氷温で
あれば、輸送初期には輸送管全体が暖かいため融解する
が、氷の顕熱により輸送開始後約３分程で、ほぼ輸送管
が冷却され、融解すること無く、連続的に輸送すること
ができる。If the air temperature during transportation is 10 ° C. or lower,
Due to the expansion of the air itself and the cooling by ice, it is cooled to almost 0 ° C. at the end of the transport pipe. On the other hand, the temperature of ice chips rises due to heat input from the air, but if the ice temperature is -3 ° C or lower, the entire transport pipe melts because the entire transport pipe is warm at the beginning of transport, but transport begins due to the sensible heat of ice. After about 3 minutes, the transport pipe is cooled and can be continuously transported without melting.
【００１７】投入される氷片と空気の重量による混合比
は３〜７が好適である。３未満では輸送効率の低下、相
対的融解量の増加をきたす。また、混合比が高い程、効
率的に輸送できるが、７を越えると、氷の流層速度が遅
くなり、流層時の圧力損失も大きくなり、実用の範囲を
越える。A mixing ratio of 3 to 7 is suitable for the weight of the ice pieces and the air. If it is less than 3, the transport efficiency is lowered and the relative melting amount is increased. Further, the higher the mixing ratio is, the more efficiently the particles can be transported. However, when the mixing ratio exceeds 7, the ice layer velocity becomes slow and the pressure loss during the layer formation becomes large, which exceeds the practical range.
【００１８】風速２０〜４０ｍ／sec では、氷片の一部
は管の底部に抵触している。また、付着を防止すること
から、摩擦の少ないポリエチレン管、内面コーティング
管が好適である。図１に圧送の場合の機器構成を示す。
圧送の場合、ブロワ１、アフタークーラ２、ロータリバ
ルブ３が輸送管１０に接続され、この輸送管に複数の２
方向弁１１が連結される。At a wind speed of 20 to 40 m / sec, part of the ice pieces are in contact with the bottom of the pipe. Further, a polyethylene pipe and an inner surface coating pipe, which have less friction, are preferable because they prevent adhesion. FIG. 1 shows a device configuration in the case of pressure feeding.
In the case of pressure feeding, a blower 1, an aftercooler 2, and a rotary valve 3 are connected to a transportation pipe 10, and a plurality of 2 is connected to this transportation pipe.
The directional valve 11 is connected.
【００１９】ロータリバルブ３から投入された氷片は、
輸送管１０を通り、２方向弁１１、支管１３を通り、ク
ローラ台車２７等に搭載された移動形撒氷機２０又は固
定台２８以上に設けられた固定形撒氷機３０に供給され
る。The ice pieces thrown in from the rotary valve 3 are
It is supplied through the transport pipe 10 and the two-way valve 11 and the branch pipe 13 to the movable ice cube maker 20 mounted on the crawler carriage 27 or the fixed ice cube maker 30 provided on the fixed base 28 or more.
【００２０】これら撒氷機は、空気と氷片を分離する分
離機２１としての例えばサイクロン、分離された氷片を
上記サイクロンから排出する排出機２２としての例えば
ロータリバルブ、排出された氷片を雪状に粉砕する粉砕
機２４及び雪状に粉砕された氷をゲレンデに散布する手
段としてのブロワ２３及び散布ホース２５から構成され
ている。These ice-ice machines include, for example, a cyclone as a separator 21 for separating air and ice pieces, a rotary valve as an ejector 22 for ejecting the separated ice pieces from the cyclone, and an ejected ice piece. It comprises a crusher 24 for crushing into snow and a blower 23 and a spray hose 25 as means for spraying snow crushed onto a slope.
【００２１】こうして、雪状に粉砕され氷をゲレンデに
広く散布できるようになっている。なお、ブロワ２３を
設けること無く、サイクロンから出た空気により雪状に
粉砕された氷を散布するようにしてもよい。一方、吸引
輸送の場合は、図２に示すように、輸送管１０の末端に
フィルタ７及び真空ポンプ８が接続されている。[0021] In this way, the ice that has been crushed into snow can be widely spread on the slopes. It should be noted that, without providing the blower 23, ice crushed into snow by the air discharged from the cyclone may be sprayed. On the other hand, in the case of suction transportation, as shown in FIG. 2, the filter 7 and the vacuum pump 8 are connected to the end of the transportation pipe 10.
【００２２】そして、図３に示すカプラー１２が輸送管
１０中に複数接続されている。カプラー１２は、カップ
リング部１２ｂを先端に有する１組のフレキシブルホー
ス１２ａで構成されている。そして、カップリング部１
２ｂを分離し、これらを散布機のサイクロン２１への支
管１３ａ、１３ｂに接続する。この場合、サイクロンか
らの空気は支管１３ｂを介して輸送管１０に戻される。A plurality of couplers 12 shown in FIG. 3 are connected in the transport pipe 10. The coupler 12 is composed of a set of flexible hoses 12a having a coupling portion 12b at the tip. And the coupling part 1
2b are separated and connected to branch pipes 13a, 13b to the cyclone 21 of the spreader. In this case, the air from the cyclone is returned to the transport pipe 10 via the branch pipe 13b.
【００２３】なお、圧送の場合も、吸引の場合も、貯氷
室４はゲレンデの上側に設置するほうが、重力による落
下により、ブロワ、真空ポンプの所要馬力を小さくする
ことができる。In both pressure feeding and suctioning, if the ice storage chamber 4 is installed above the slope, it is possible to reduce the horsepower required for the blower and the vacuum pump due to the fall due to gravity.
【００２４】[0024]
【発明の効果】本発明の氷片の輸送方法及び氷片の粉砕
散布設備は上記のようなもので、輸送中の氷片の融解に
よる閉塞の問題を生ずること無く、氷片を長距離輸送す
ることができ、ゲレンデ全域に雪状に粉砕された氷を散
布することができる。The method of transporting ice pieces and the equipment for crushing and spraying ice pieces according to the present invention are as described above, and the ice pieces can be transported over a long distance without causing a problem of clogging due to melting of the ice pieces during transportation. It is possible to sprinkle snow-crushed ice over the entire slope.
【図１】本発明の一実施例を示す圧送式の場合の設備構
成の説明図。FIG. 1 is an explanatory diagram of an equipment configuration in the case of a pressure feeding type showing an embodiment of the present invention.
【図２】本発明の一実施例を示す吸引式の場合の設備構
成の説明図。FIG. 2 is an explanatory diagram of an equipment configuration in the case of a suction type showing an embodiment of the present invention.
【図３】本発明の一実施例を示すカプラーの説明図。FIG. 3 is an explanatory view of a coupler showing an embodiment of the present invention.
１０…輸送管、１１…２方向弁、１２…カプラー、２０
…移動式撒氷機、３０…固定式撒氷機、２１…分離機、
２２…排出機、２３…ブロワ、２４…粉砕機、２５…散
水ホース。10 ... Transport pipe, 11 ... 2-way valve, 12 ... Coupler, 20
… Mobile ice-ice, 30… Fixed ice-maker, 21… Separator,
22 ... Ejector, 23 ... Blower, 24 ... Crusher, 25 ... Sprinkler hose.
─────────────────────────────────────────────────────
─────────────────────────────────────────────────── ───
【手続補正書】[Procedure amendment]
【提出日】平成４年１２月１７日[Submission date] December 17, 1992
【手続補正１】[Procedure Amendment 1]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】０００５[Name of item to be corrected] 0005
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【０００５】氷片の輸送、即ち、この発明での輸送とは
氷片の重力による降下とその降下を付勢する空気流とに
よるものであり、これに関しては、氷温を−３℃以下、
氷片の少なくとも９０重量％を５ｍｍ目のふるいを通過
せず、４０mm目のふるいを通過する範囲内の大きさと
し、氷片投入口における空気温度を１０℃以下、空気速
度を２０〜３０ｍ／sec とし、かつ投入氷片と投入空気
の混合比を、投入空気重量に対する投入氷片重量の比を
３〜７としたことを特徴としている。The transportation of ice pieces, that is, the transportation in the present invention, is due to the gravity-induced drop of the ice pieces and the air flow for urging the drop, and in this regard, the ice temperature is −3 ° C. or less,
The size of at least 90% by weight of the ice pieces does not pass through the 5 mm sieve and does not pass through the 40 mm sieve, and the air temperature at the ice piece inlet is 10 ° C. or less and the air velocity is 20 to 30 m / sec, and the mixing ratio of the input ice pieces and the input air is 3 to 7 as the ratio of the weight of the input ice pieces to the weight of the input air.
【手続補正２】[Procedure Amendment 2]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】０００８[Correction target item name] 0008
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【０００８】空気流の作り方としては、傾斜通路上部か
ら大気圧より高い空気圧をかけ風速を得る方法（圧送と
呼ぶ）と傾斜通路下部から空気を吸引し、内部の圧力を
空気圧より低い圧力にし氷片の降下を付勢する風速を得
る方法（吸引と呼ぶ）がある。 管径２５０mmのパイプ
を使い毎時２０ton の氷を風速２４／sec の空気流を使
い500 ｍ輸送する場合、傾斜のない平地では全圧力損失
が３６５０mmAqに達する。従って圧送の場合、３６５０
mmAq以上加圧できるブロワが、吸引の場合、−３６５０
mmAq以上の吸引ができる真空ポンプが必要になる。 As a method of producing an air flow, a method of obtaining a wind speed by applying an air pressure higher than the atmospheric pressure from the upper part of the inclined passage (called pressure feeding) and sucking air from the lower part of the inclined passage to make the internal pressure lower than the air pressure and ice There is a method (called suction) to obtain the wind speed that urges the descent of one piece. When a pipe with a diameter of 250 mm is used and 20 ton of ice per hour is transported for 500 m using an air flow with a wind speed of 24 / sec, the total pressure loss reaches 3650 mm Aq on a flat land without slope. Therefore, in case of pressure feeding, 3650
If the blower that can pressurize more than mm Aq is suction, -3650
A vacuum pump capable of suction of mmAq or more is required.
【手続補正３】[Procedure 3]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】０００９[Correction target item name] 0009
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【０００９】一方、ゲレンデ傾斜角が１５°の場合、傾
斜の影響により全圧力損失は、１７８０mmAqまで減少
し、平地で輸送する場合に比べ半分以下の馬力のブロワ
又は真空ポンプにより、空気を付勢するだけで容易に氷
片を輸送する事ができる。また、氷片と空気速度の比は
平地では６１％であるが、傾斜地の場合、８７％まで向
上し、輸送時間も１０秒短縮し、高速にて輸送する事が
可能となる。図１に圧送式空気輸送、図２に吸引式空気
輸送の機器構成を示す。[0009] hand, when the slopes inclination angle is 15 °, the total pressure loss due to the effects of inclination, reduced to 1780 mm Aq, by less than half the horsepower blower or vacuum pump compared with the case of transportation on level ground, air You can easily transport ice pieces just by energizing. In addition, the ratio of ice fragments to air velocity is 61% on flat land, but it increases to 87% on sloping ground, transport time is shortened by 10 seconds, and high-speed transportation becomes possible. FIG. 1 shows the equipment configuration of pressure-fed air transportation, and FIG. 2 shows the equipment configuration of suction air transportation.
【手続補正４】[Procedure amendment 4]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】００１０[Correction target item name] 0010
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【００１０】貯氷室４に、図示しない自動製氷機で製氷
された氷片を貯蔵しておき、スリューフィーダ５等によ
り輸送管１０に定量排出する。自動製氷機で製氷された
氷片は種々の形状を呈するが自動製氷機の構造により板
状のプレートアイス、薄片状のフレークアイスに大別さ
れる。板状のプレートアイスの場合、板厚は常に一定で
あるが平面的な形状は任意である。その平面的な大きさ
は氷厚により変化するが測定した結果によれば氷厚が約
１５mmのとき、平面的な大きさ（ふるいを通過する範
囲）は約６〜４０mm目の範囲に重量にして９０％以上が
分布し、６mm以下の微粉は約３％以下である。フレーク
アイスは製氷方法から類推すると更により多くの微粉が
存在するものと考えられる。In the ice storage chamber 4, ice pieces produced by an automatic ice making machine (not shown) are stored, and a fixed amount is discharged to the transport pipe 10 by the slew feeder 5 or the like. Ice pieces produced by an automatic ice maker have various shapes, but they are roughly classified into plate-shaped plate ice and flaky ice flakes depending on the structure of the automatic ice maker. In the case of plate-shaped plate ice, the plate thickness is always constant, but the planar shape is arbitrary. The planar size varies depending on the ice thickness, but according to the measurement results, when the ice thickness is about 15 mm , the planar size (the range passing through the sieve) is in the range of about 6 to 40 mm. 90% or more by weight is distributed, and fine powder of 6 mm or less is about 3% or less. By analogy with the ice making method, it is thought that flake ice contains more fine powder.
【手続補正５】[Procedure Amendment 5]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】００１２[Correction target item name] 0012
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【００１２】製氷効率及び微粉の発生が少ないことから
氷の長距離空気輸送には自動製氷機によるプレート状の
氷片が適しており、実験結果から、氷片の少なくとも９
０重量％を５ｍｍ目のふるいを通過せず、４０mm目のふ
るいを通過する範囲内の大きさとしていることが長距離
空気輸送の好適な条件である。この場合、砕く前の板氷
は、１０〜２０ｍｍの厚さとするのが望ましい。Since ice-making efficiency and generation of fine powder are small, plate-like ice pieces by an automatic ice-making machine are suitable for long-distance pneumatic transportation of ice.
It is a suitable condition for long-distance pneumatic transportation that 0% by weight does not pass through a sieve with a diameter of 5 mm and has a size within a range of passing through a sieve with a diameter of 40 mm . In this case, it is desirable that the plate ice before crushing has a thickness of 10 to 20 mm.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 長瀬 一昭 大阪府大阪市北区茶屋町１番32号 ヤンマ ーディーゼル株式会社内 (72)発明者 豊永 稔 大阪府大阪市北区茶屋町１番32号 ヤンマ ーディーゼル株式会社内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Kazuaki Nagase 1-32, Chaya-cho, Kita-ku, Osaka, Osaka Prefecture Yanmar Diesel Co., Ltd. (72) Minor Toyonaga 32-32, Chaya-cho, Kita-ku, Osaka-shi, Osaka No. Yanmar Diesel Co., Ltd.
Claims (2)
下させる管状の傾斜通路を設け、該傾斜通路に氷片の降
下を促進する空気流付勢手段を設け、出口に空気と氷片
を分離する分離機、氷片を排出する排出機、氷片を雪状
にする粉砕機、及びその散布手段からなる人工降雪装
置。1. A tubular inclined passage for lowering the ice pieces supplied to the inlet toward the outlet, an air flow urging means for promoting the downward movement of the ice pieces is provided in the inclined passage, and air and ice pieces are provided at the outlet. An artificial snowfall device comprising a separator for separating ice pieces, an ejector for ejecting ice pieces, a crusher for making ice pieces into a snow shape, and a spraying means thereof.
０重量％を５ｍｍ目のふるいを通過せず、４０mm目のふ
るいを通過する範囲内の大きさとし、氷片投入口におけ
る空気温度を１０℃以下、空気速度を２０〜３０ｍ／se
c とし、かつ投入氷片と投入空気の混合比を、投入空気
重量に対する投入氷片重量の比を３〜７の氷片としたこ
とを特徴とする請求項１に記載の人工降雪装置。2. The ice temperature is −3 ° C. or lower, and at least 9 pieces of ice pieces.
The weight of 0% by weight does not pass through the sieve of 5 mm, but within the range of passing through the sieve of 40 mm, the air temperature at the ice piece inlet is 10 ° C or less, and the air velocity is 20 to 30 m / se.
The artificial snowfall device according to claim 1, wherein c is set, and the mixing ratio of the input ice pieces and the input air is an ice piece in which the ratio of the weight of the input ice pieces to the weight of the input air is 3 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33160792A JP3163186B2 (en) | 1992-12-11 | 1992-12-11 | Artificial snowfall equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33160792A JP3163186B2 (en) | 1992-12-11 | 1992-12-11 | Artificial snowfall equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06180169A true JPH06180169A (en) | 1994-06-28 |
| JP3163186B2 JP3163186B2 (en) | 2001-05-08 |
Family
ID=18245553
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP33160792A Expired - Fee Related JP3163186B2 (en) | 1992-12-11 | 1992-12-11 | Artificial snowfall equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3163186B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1239243A1 (en) * | 1999-12-08 | 2002-09-11 | Koyo Industry Co., Ltd. | Artificial snow making machine |
| JP2018059709A (en) * | 2017-10-12 | 2018-04-12 | 三菱重工冷熱株式会社 | Production method for wet snow, production apparatus for wet snow, and blow nozzle for snowstorm |
-
1992
- 1992-12-11 JP JP33160792A patent/JP3163186B2/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1239243A1 (en) * | 1999-12-08 | 2002-09-11 | Koyo Industry Co., Ltd. | Artificial snow making machine |
| EP1239243A4 (en) * | 1999-12-08 | 2006-08-02 | Koyo Industry Co Ltd | Artificial snow making machine |
| JP2018059709A (en) * | 2017-10-12 | 2018-04-12 | 三菱重工冷熱株式会社 | Production method for wet snow, production apparatus for wet snow, and blow nozzle for snowstorm |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3163186B2 (en) | 2001-05-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105371549A (en) | Snow making method and apparatus | |
| WO1997046838B1 (en) | Apparatus and method for ice blasting | |
| CN114877578A (en) | Multifunctional snow making system | |
| JPH0264046A (en) | Method and apparatus for pulverizing liquid slag | |
| WO1991004449A1 (en) | Apparatus for preparing, classifying and metering particle media | |
| JPH06180169A (en) | Artificial snowmaking machine | |
| US4524548A (en) | Continuous deflashing system | |
| JPH0730984B2 (en) | Snowmaking method at indoor ski resort | |
| JP3264500B2 (en) | Ice blasting apparatus and method for producing ice particles for ice blasting | |
| US20100202834A1 (en) | Snow transportation system | |
| JPS5825609B2 (en) | Broken ice transport method | |
| JP4673948B2 (en) | Ice and snow transport apparatus and method | |
| JPH06273022A (en) | Ice and snow transfer device | |
| JPH06273021A (en) | Ice and snow spray device | |
| CN109230372A (en) | A kind of antifreeze viscous dust-arrest device of belt | |
| JPH11248313A (en) | Artificial snow spraying method | |
| JPH06300405A (en) | Snow-making machine | |
| JPH06323710A (en) | Artificial snow conveying apparatus | |
| RU1832120C (en) | Apparatus for granulating slag melt | |
| JPH0755308A (en) | Artificial snow scattering apparatus | |
| CN208868878U (en) | A kind of antifreeze viscous dust-arrest device of belt | |
| JPH0742125A (en) | Method and device for conveying and sprinkling snow ice grain | |
| JP3388561B2 (en) | Transport equipment for low-temperature solids | |
| JPH05302307A (en) | Device for transferring and scattering snowflake | |
| RU2309995C1 (en) | Charge to agglomeration preparation method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |