JPH1181222A - Ski slope structure of indoor ski ground and method for forming ski slope - Google Patents

Abstract

PROBLEM TO BE SOLVED: To keep good the quality of snow on a ski slope using a simple and low-cost ski slope structure in an indoor skiing ground. SOLUTION: An indoor ski ground has a ski slope 17 formed by sprinkling a predetermined thickness of artificial snow 16 on a slope inside a dome. In that case, the underside of the artificial snow 16 constituting the ski slope 17 comprises a floor face part 12, a heat insulating urethane 31, a concrete floor face 32, and artificial turf 33; the artificial snow 16 on the ski slope 17 is melted from its lower surface part by setting the thickness of the heat insulating urethane 31 so that heat flowing through a machine room below the floor face part 12 is conducted to the lower surface part of the artificial snow 16 to melt the artificial snow 16 by a predetermined thickness. By sprinkling and supplying artificial snow 16 over the upper surface part of the artificial snow 16, the thickness of the artificial snow 16 on the skiing slope 17 is held constant.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a piste structure and a method for forming a piste for maintaining snow quality of the piste in an indoor ski slope having a piste provided inside a building.

[0002]

2. Description of the Related Art Due to the development and diversification of the leisure industry, there is a demand for skiing in a comfortable environment without being affected by the natural environment. To meet this demand, indoor ski slopes have been built, and are being added not only to cities and suburbs, but also to natural ski slopes so that skiing can be performed even in bad weather.

FIG. 4 schematically shows the interior of a conventional indoor ski area.

In a conventional indoor ski area, as shown in FIG. 4, a slope 102 is formed inside a building 101 and is inclined in a direction perpendicular to the drawing.
Slope 104 is formed by snow covering 103 at a predetermined thickness. In the vicinity of the ceiling of the building 101, an air compression tube 105 is erected, and an air compressor 106 provided outside the building 101 is connected to the air compression tube 105.
A water pipe 107 is erected along the water pipe 107.
1 is connected to a water supply device 108 provided outside. A plurality of common injection nozzles 109 are mounted on the air compression pipe 105 and the water supply pipe 107 which are parallel to each other. Further, on the side wall of the building 1, a cold air supply pipe 110 for blowing out cold air into the inside of the building 1, and an air discharge pipe 1 for discharging air inside the building 1.
One end of 11 penetrates and opens inside the building 101,
The other ends of the cool air supply pipe 110 and the air discharge pipe 111 are connected to an air cooling device 112.

[0005] Therefore, the air cooling device 112 is about -10 to
The cold air of −15 ° C. is sent to the building 101 through the cold air supply pipe 110.
Let this cold air blow out inside. At the same time, air compressor
In addition to supplying compressed air to the air compression pipe 105 from 106, water is supplied from the water supply device 108 to the water supply pipe 107, and each injection nozzle 10
Inject from 9. Then, heat exchange is performed between the mist water and the cooled air, and the mist water becomes artificial snow 103 and falls on the slope 104. If such an operation is continued for a certain period of time, snow will accumulate on the slope 102 and the slope 104
Is formed.

[0006] The artificial snow 1 having a certain thickness is attached to the slope 102.
When a slope 104 having a 03 is formed, each spray chisel 10
Stop supply of compressed air and water to 9 and stop the production and snowfall of artificial snow. Therefore, a person who enjoys skiing can enjoy skiing on the slope 104 having artificial snowfall with a good snow thickness in a state where snow does not fall.

On the other hand, cool air is constantly blown from the cool air supply pipe 110 into the inside of the building 101, and even when artificial snow is not falling, the whole inside of the building 101 is reduced by about -5 to It is cooled to around 0 ° C., and the snow quality of the artificial snow 103 can be favorably maintained by compressed air and water. That is, in order to maintain good snow quality of the artificial snow 103, it is necessary to maintain the temperature of the snow surface of the artificial snow 103 below a preset temperature (for example, 2 ° C.).
In order to keep the snow surface temperature at 2 ° C. or less, cool air is continuously blown out to reduce the air temperature of the entire interior of the building 101 to about −5.
It was cooled to around -10C.

[0008]

In the above-mentioned conventional indoor ski area, in order to maintain good snow quality of the artificial snow 103 on the slope 104, the inside of the building 101 is extended from the cold air supply pipe 110. Cooling air was supplied to cool to around -5 to -10C. However, the artificial snow 103 on the slope 104 receives heat from lighting or heat from skiing, and the snow quality of the slope 104 gradually deteriorates.

Therefore, conventionally, the artificial snow 103 on the surface of the slope 104 is scraped and discharged at a predetermined time or every predetermined period, and the compressed air supplied from the air compression pipe 105 and the water supplied from the water supply pipe 107 are removed. Is sprayed from each of the spray nozzles 109, so that new artificial snow 103 is sprayed on the surface of the slope 104, and the snow quality of the slope 104 is maintained.

However, when the artificial snow 103 whose snow quality on the slopes 104 has deteriorated is scraped and discharged, it is necessary to close the slopes 104 and prohibit skiing before performing the work, which limits the use period of the slopes 104. There is a problem. In addition, if the operation of scraping and discharging the artificial snow 103 on the slope 104 is performed outside the usage time of the slope 104, there is a problem that the operation becomes troublesome. Further, a dedicated machine is required to scrape the artificial snow 103 having a predetermined thickness from the slope 104, and a dedicated machine is also required to discharge the scraped snow. As described above, in the conventional indoor ski resort, in order to maintain good snow quality on the slope 104, not only a great deal of labor is required but also the cost is increased. Furthermore, the building
If the snow temperature is updated while melting the artificial snow 103 by raising the internal temperature set value of 101, melting occurs from the entire surface of the slopes 104, and it is not possible to properly drain the snowmelt water, increasing the water holding capacity As a result, the artificial snow 103 is in a sleet state, and cannot slide.

The present invention solves such a problem, and provides a slope structure and a method for forming a slope in an indoor ski resort which can always maintain good snow quality on a slope with a simple and inexpensive structure. The purpose is to do.

[0012]

SUMMARY OF THE INVENTION In order to achieve the above-mentioned object, a slope structure of an indoor ski resort according to the present invention is an indoor ski having a slope formed by spraying artificial snow of a predetermined thickness on a slope in a building. In the field, a heat source is provided below the artificial snowfall that constitutes the slope, via a heat insulating member, and the lower surface portion of the artificial snowfall is melted by a predetermined thickness by the flow-through heat from the heat source, so that the heat insulating member The thickness is set.

[0013] Further, the method for forming a slope of an indoor ski slope according to the present invention is characterized in that, in an indoor ski slope in which a predetermined thickness of artificial snow is scattered on a slope in a building to form a slope, the artificial snowfall constituting the slope is formed. The thickness of the artificial snowfall on the slope is always maintained constant by dispersing and replenishing artificial snow on the upper surface of the artificial snow while melting from the lower surface. .

[0014]

Embodiments of the present invention will be described below in detail with reference to the drawings.

FIG. 1 is a cross section showing a slope structure of an indoor ski resort according to an embodiment of the present invention, and FIG. 2 is a schematic diagram showing a whole dome system to which the slope structure of the indoor ski resort of this embodiment is applied. 3 shows a cross section taken along the line III-III of FIG.

The dome of the present embodiment has a room temperature space region used as a theme park or a shopping center, and a low temperature space region used as a ski resort. That is, as shown in FIGS. 2 and 3, the dome 11 has an elliptical shape in plan view, and a semicircular ceiling portion 13 is formed with respect to the floor surface portion 12, so that the inside becomes a large space 14. ing. The inside of the dome 11 is one side (FIG. 1).
(Left side in FIG. 1) is a room temperature space area M such as a theme park or a shopping center, and the other side (right side in FIG. 1) is a low temperature space area C of an indoor ski resort. In the low-temperature space area C, a slope 15 is formed on the lower surface, and artificial snow 16 is snow-covered on the slope 15 by a predetermined thickness, so that the slope 1
7 are formed.

In this indoor ski resort, artificial snow 16 is manufactured by a snowmaker 18, and the manufactured artificial snow 16 is temporarily stored in a snow storage 19. Then, the artificial snow 16 stored in the snow storage 19 is scattered by the snow carrier 20 on the slope 17.
(Pneumatic conveyance or the like) to form artificial snowfall on the slope 17. The water generated by the melting of the artificial snow 16 on the slope 17 is collected and returned to the snow making machine 18, so that the artificial snow 16 is produced again.

On the other hand, an air dam 21 is formed on the floor portion 12 of the dome 11 so as to partition the room temperature space region M and the low temperature space region C with a step. On the side wall of the dome 11 on the side of the indoor ski area, a number of cold air holes 22 for blowing cool air into the dome 11 are formed at upper and side portions of the slope 17, and the lower part of the slope 17 is formed. An exhaust hole 23 for discharging air inside the dome 11 is formed in a side surface of the air dam 21. Each of the cold air holes 22 and the exhaust holes 23 is arranged so that its height position is located near the surface height of the artificial snowfall 16 having a predetermined thickness (thickness suitable for skiing), The shape is a long slit shape along the surface of the artificial snow 16.

The snow surface cold air flow control device 24 has a heat exchanger and a fan, not shown, and has a temperature (-10 to -15.degree. For example, cold air cooled to a temperature of -1 to 0 ° C.) can be supplied to the plurality of cold air holes 22. This cool air is supplied from each cool air hole 22 toward the surface of the slope 17, and the surface of the artificial snow 16 is cooled by the cool air supplied from the cool air hole 22, without melting snow, and having good snow quality. Will be maintained. Then, the cool air supplied to the surface of the slope 17 cools the surroundings (artificial snow 14 and air) and exchanges heat to increase the temperature, and is discharged from each of the exhaust holes 23 to the outside of the dome 11 to cool the snow surface. The air is returned to the airflow control device 24, where the heat is exchanged (cooled) and supplied to the slope 17 again from the cold air holes 22 as described above.

The high position of the air dam 21 (or
A plurality of injection nozzles 25 are provided in the vicinity of the top), and the injection direction of the jet from the injection nozzles 25 is in the direction of the slope 17, and the blowing temperature is 20 ° C. to 30 ° C.
It has become. The jet from the jet nozzle 25 rises through the cool air flowing on the surface of the slope 17 and flows in the room temperature space M along the ceiling 13 of the dome 11 so as to circulate in the dome 11. Has become. Further, the ceiling 13 of the dome 11 is provided with a discharge hole 26 for discharging the air inside the dome 11 to the outside, and the airflow control device 27 has a heat exchanger and a fan (not shown),
The air in the dome 11 discharged from the discharge hole 26 is collected, heat exchanged (cooled), and can be jetted from the jet nozzle 25 as a jet.

Meanwhile, in the indoor type ski resort of the present embodiment, the artificial snow 16 is melted from the lower surface of the artificial snow 16 constituting the ski slope 17 and is replenished by spraying the artificial snow 16 on the upper surface of the artificial snow 16. Thus, the thickness of the artificial snow 16 on the slope 17 is always kept constant and good snow quality is maintained. That is, as shown in FIG. 1, the floor 12 of the dome 11 is made of concrete.
A concrete floor 32 is formed on the upper side via a urethane heat insulating material 31 as a heat insulating member. The artificial turf 33 is laid on the concrete floor 32, and the artificial snow 16 having a predetermined thickness is piled on the artificial turf 33. Further, on the upper surface of the concrete floor 32 and below the artificial turf 33, a water-melting groove 34 is formed along the inclination direction of the slope 15. A through hole 35 is formed. Further, below the concrete floor 12 is a machine room 36 as a heat source.

Therefore, the heat flowing from the machine room 36 is transmitted through the floor 12, the urethane insulation 31, the concrete floor 32, and the artificial turf 33 to act on the lower surface of the artificial snow 16, and this artificial snow 16 is on the lower surface side. From the artificial turf 33
From the through hole 35 to the melt groove 34, and flows downward through the melt groove 34. In this case, the thickness of the urethane heat insulating material 32 is set in accordance with the amount of snow melting on the lower surface of the artificial snow 16 on the slope 17, and heat conduction through the machine room 36 is transmitted to the lower surface of the artificial snow 16. Set in consideration of the rate.

As shown in FIG. 2, in the dome 11 of the present embodiment thus configured, the snow surface cold air flow control device 24 can maintain the snow quality of the artificial snow 16 satisfactorily, for example, -1. The cold air of ０0 ° C. is supplied from the plurality of cold air holes 22 toward the surface of the slope 17, and the surface of the artificial snow 16 is cooled by the cold air, so that the surface does not melt and the snow quality is improved. Will be maintained. Then, the cool air supplied toward the surface of the slope 17 flows downward along the surface of the slope 17, exchanges heat, raises the temperature, and returns to the snow surface cool air flow control device 24 through each exhaust hole 23. Here, heat exchange (cooling) is performed, and the heat is again supplied from the cold air holes 22 to the slope 17.

On the other hand, the airflow control device 27 injects a jet at, for example, 20 ° C. to 30 ° C. from the plurality of injection nozzles 25 toward the slope 17 so that the inside of the dome 11 is at room temperature. Rises above the cool air flowing on the surface of the dome 11 and circulates along the ceiling 13 of the dome 11, and the inside of the dome 11 is partitioned into a normal temperature space area M and a low temperature space area C. A part of the airflow flowing through the ceiling 13 of the dome 11 passes through each discharge hole 26 and
7, the heat is exchanged (cooled), and the jet is again jetted from the jet nozzle 25 to the slope 17 side.

As shown in FIG. 1, the thickness of the urethane heat insulating material 32 is set in accordance with the amount of snow melting on the lower surface of the artificial snow 16 on the slope 17 of the indoor ski resort. The heat flowing through the floor 16, the urethane insulation 31, the concrete floor 32, and the artificial grass 33 acts on the lower surface of the artificial snow 16, and the lower surface of the artificial snow 16 melts. And the melt of artificial snow 16 is artificial grass 3
3 flows down from the through hole 35 into the molten water groove 34 and flows downward through the molten water groove 34. On the other hand, the snow making machine 18 appropriately manufactures artificial snow 16 using tap water or this snow melting water and stores it in a snow storage 19, and the snow carrier 20 moves the snow storage 19 to the slope 17 according to the amount of snow melting. The artificial snow 16 is conveyed and scattered on the slope 17.

As described above, the artificial snow 16 actively melts the lower surface side by the once-through heat, while the artificial snow 16 is sprayed on the upper surface of the slope 17 and replenished in accordance with the amount of snow melting, thereby replenishing.
The thickness of the artificial snow 16 on the slope 17 can be kept constant at all times.

[0027]

As described above in detail with reference to the embodiments, according to the slope structure of the indoor ski resort of the present invention, it is possible to form a slope by spraying artificial snow of a predetermined thickness on the slope in the building. A heat source is provided below the artificial snowfall constituting the slope via an insulating member, and the thickness of the heat insulating member is set so that the lower surface portion of the artificial snowfall is melted by a predetermined thickness by the heat flowing through the heat source. Therefore, there is no need for a machine to scrape artificial snow whose snow quality on the slope surface has deteriorated or a transporter to transport the shaved snow, and there is no need to block the slope and prohibit skiing. The snow quality of the slope can be constantly maintained satisfactorily.

According to the method for forming a slope of an indoor ski resort of the present invention, a slope can be formed by spraying artificial snow of a predetermined thickness on a slope in a building, and a lower surface portion of the artificial snowfall constituting the slope can be formed. On the other hand, the artificial snow whose surface was deteriorated because the thickness of the artificial snow on the slope was constantly maintained by spraying artificial snow on the upper part of the artificial snow and replenishing it. There is no need to scrape snowfall or transport the scraped snow, and there is no need to block the slope to prohibit skiing, and it is possible to easily maintain good snow quality on the slope all the time.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view illustrating a slope structure of an indoor ski resort according to an embodiment of the present invention.

FIG. 2 is a schematic diagram illustrating an entire dome system to which the slope structure of the indoor ski resort according to the embodiment is applied.

FIG. 3 is a sectional view taken along the line III-III of FIG. 2;

FIG. 4 is a schematic diagram showing a building interior of a conventional indoor ski resort.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 Dome 12 Floor 15 Slope 16 Artificial snow 17 Slope 18 Snowmaker 19 Storage 20 Snow carrier 21 Air dam 22 Cold air hole 23 Exhaust hole 24 Snow surface cold air flow control device 25 Injection nozzle 26 Outlet hole 27 Air flow control device 31 Urethane Insulation material (insulation member) 32 Concrete floor 33 Artificial turf 34 Melt groove 35 Through hole M Room temperature space C Room temperature space

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Junji Ogata 2-1-1, Shinhama, Arai-machi, Takasago-shi, Hyogo Pref. Inside the Takasago Research Laboratory, Mitsubishi Heavy Industries, Ltd. No. 1 Inside the Mitsubishi Heavy Industries, Ltd. Takasago Research Laboratory (72) Inventor Shuji Kadoya 2-1-1, Shinhama, Araimachi, Takasago-shi, Hyogo Prefecture Inside the Mitsubishi Heavy Industries, Ltd. Takasago Machinery Works

Claims (2)

[Claims] In an indoor ski resort in which artificial snow of a predetermined thickness is sprayed on a slope in a building interior to form a slope, a heat source is provided below an artificial snowfall constituting the slope by an insulating member, and a heat source is provided. As the lower surface of the artificial snow melts by a predetermined thickness due to the once-through heat from the heat source,
A slope structure for an indoor ski resort, wherein a thickness of the heat insulating member is set. 2. In an indoor ski area where a slope is formed by spraying artificial snow of a predetermined thickness on a slope in a building interior, melting is performed from a lower surface portion of the artificial snowfall constituting the slope while an upper surface portion of the artificial snowfall is included. A method for forming a slope in an indoor ski resort, wherein the thickness of the artificial snowfall on the slope is constantly maintained by spraying artificial snow on the slope.