JPH0761371B2 - Artificial snow layer formation method - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for forming an artificial snow layer in an indoor artificial snow ski resort or the like.

[0002]

2. Description of the Related Art Conventionally, as a method for forming an artificial snow layer, cold water is sprayed from a spray nozzle together with compressed air into an indoor space on the floor while being cooled to, for example, about -6 to -10 ° C. As a result, the spray cold water is frozen in the indoor space into ice particles by the adiabatic expansion effect of the nozzle spray and cooling by the cold air in the space, and the ice particles are accumulated and spread on the floor, thereby stacking the ice particles. There is a method of forming an artificial snow layer consisting of on the floor. ...... (Conventional example 1)

As another method, water-absorbent resin particles impregnated with water are sprayed on the floor, and the sprayed laminated particles of the water-absorbent resin particles are frozen by a cooling means provided on the floor, and
There is a method of forming an artificial snow layer composed of a stack of frozen water-absorbent resin particles on the floor by crushing this frozen layer with a crushing device to make it fine (for example, PCT / AU85 / 00).
267). ...... (Conventional example 2)

[0004]

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention
In the forming method of No. 6, the indoor space (which is a considerably large space in an indoor ski resort, etc.) is -6 to -10 ° C regardless of the outdoor conditions.
Since enormous amount of energy is required to maintain cooling to a certain level (especially in summer), there is a problem that the cost of forming the artificial snow layer increases, and after the artificial snow layer is formed, melting is prevented to prevent the artificial snow from forming. Even to maintain the layers, the indoor space is, for example, -2 to
Since it is necessary to keep cooling at a low temperature such as −3 ° C., there is a problem that maintenance costs increase.

In addition, since the indoor space is maintained at the cryogenic temperature as described above during the formation of the artificial snow layer and during the use of the formed artificial snow layer, the operator and the operator of the artificial snow layer formation Users (skiers, etc.) in the artificial snow layer feel cold, and because of the large temperature difference between the low-temperature indoor space and the outdoors (30 ° C deg or more in summer), it is a so-called when entering and leaving the indoor space. There was a problem such as dizziness due to thermal shock, and there was a problem in terms of health, comfort and workability.

On the other hand, in the forming method of Conventional Example 2, since a large amount of water-absorbent resin particles are required, the material cost increases, and
A large crushing power is required to pulverize the frozen layer of the water-absorbent resin particles to make it finer, and therefore, there is a problem that the cost for forming the artificial snow layer also increases.

Further, in the forming method of Conventional Example 2, since the artificial snow layer contains a large amount of water-absorbent resin particles, the snow surface (artificial snow layer surface) has the property of being a natural snow layer, although it is refined by pulverization. There were also very different issues.

A first object of the present invention is to solve the above problems by forming an artificial snow layer in a rational form.

A second object of the present invention is to effectively achieve improvement in comfort and workability in the air space above the floor.

A third object of the present invention is to effectively reduce the required energy.

A fourth object of the present invention is to reduce the construction time.

[0012]

SUMMARY OF THE INVENTION [first characteristic constitution] first characterizing feature of the artificial snow layer forming method according to the invention, cold
Humidifying the air area above the floor equipped with a cooling means
And, said cooling hand air humidified moisture given by the humidification
It is intended to form frost on the floor under the cooling action of the steps to form a frost stack as an artificial snow layer on the floor.

[ Second Characteristic Configuration] The second characteristic configuration of the artificial snow layer forming method according to the present invention is as follows.
The specific configuration suitable for the implementation of the first characteristic configuration is specified.
A shall, with the temperature adjustment to the air space above the floor
Then, supply air with a temperature higher than 0 ° C to this air region.
There is something to do.

[ Third Characteristic Configuration] The third characteristic configuration of the artificial snow layer forming method according to the present invention is as follows.
Specific configuration suitable for implementing the first or second characteristic configuration
The is intended to identify, prior to formation of the frost lamination,
An ice layer is formed on the floor, and the humidified moisture in the air is
Under the cooling action of the cooling means, frost is formed on the ice layer.
To form the frost layer as an artificial snow layer on this ice layer.
There is something to do.

[ Fourth Characteristic Configuration] The fourth characteristic configuration of the artificial snow layer forming method according to the present invention is as follows.
The specific configuration suitable for the implementation of the third characteristic configuration is specified.
The ice layer disperses fine-grained ice on the floor.
Cloth to form a fine ice stack on the floor and
The water impregnated in the ice stack is cooled by the cooling means.
It is formed by freezing.

[ Fifth Characteristic Configuration] The fifth characteristic configuration of the artificial snow layer forming method according to the present invention is as follows.
It is preferable in implementing the first, second, third or fourth characteristic configuration.
In order to identify a suitable specific configuration , a compression treatment is applied to the frost laminate during the growth process of the frost laminate, and
The above-mentioned humidified water in the air under the cooling action of the cooling means.
Forming frost and allowing the frost stack to grow.

[ Sixth Characteristic Configuration] The sixth characteristic configuration of the artificial snow layer forming method according to the present invention is as follows.
It is preferable in implementing the first, second, third or fourth characteristic configuration.
In order to identify a suitable specific configuration, by impregnating the frost laminate with water in the growth process of the frost laminate, freezing the impregnated water , the impregnated water frozen frosted moisture in the air
Is frosted under the cooling action of the cooling means, the frost stack
To grow. [Seventh Characteristic Configuration] According to the present invention
The seventh characteristic configuration of the artificial snow layer forming method is
In implementing the second, third, fourth, fifth or sixth characteristic configuration
A preferred specific configuration is specified, and in the process of forming the frost laminate, by covering the air region on the floor with a cover, it is possible to limit the air region to be humidified.
It

[0018]

[Operation of First Characteristic Configuration] That is, the humidified water in the air has no direct relation to the air temperature as long as the cooling temperature of the frosting target portion is equal to or lower than the frostable temperature, and the frosting target portion To frost.

Therefore, the moisturized moisture given to the air on the floor
When forming a frost layer as an artificial snow layer on the floor by frosting by the cooling means equipped on the floor, the air area on the floor is in an extremely low temperature state of −6 to −10 ° C. as in the above-mentioned conventional example 1. It is not necessary to maintain cooling to (that is,
Instead of freezing the spray water in the air above the floor,
In the first characteristic configuration, the humidifying moisture in the air is used to cool the floor equipment.
Steps generate freezing as frost on the floor, so the air area above the floor
It is not necessary to keep cooling to a cryogenic state).

Further, since it is only necessary to limit the cooling of the snow layer formation target portion by the cooling means provided on the floor, the entire air area (indoor space) on the floor as in the prior art example 1 is reduced to the external environment. The cooling load is much smaller than when the cooling is maintained at an extremely low temperature against the conditions (outdoor conditions).

Basically, the raw material of the artificial snow layer is only water which is given to the air on the floor as humidified water , and a large amount of water-absorbent resin particles as in the above-mentioned conventional example 2 is unnecessary.

The frost laminated as an artificial snow layer formed by floor frost humidified moisture in the air, it consists frost crystal group, frost originally
As a property of the frost crystals, a fine space is naturally present between the frost crystals.
Since there are a lot of gaps, it is possible to obtain a property of the snow surface (artificial snow layer surface) that is very close to that of a natural snow layer, and a large amount of power is spent as in Conventional Example 2 to crush the frozen layer on the floor. No need.

Further, even if the frost layer is compressed or dug up to adjust the snow surface quality according to the purpose of use, compared with the crushing power required to crush the frozen layer on the floor in the method of Conventional Example 2. , The required power or labor is extremely small.

[Operation of Second Characteristic Configuration] In the second characteristic configuration, air having a temperature higher than 0 ° C. is supplied to the floor air region.
To control the temperature of the air space above the floor,
Adjust to a temperature environment that is good for those in the area.

Further , the frost stacking as the artificial snow layer is described above.
The cooling effect of the cooling means installed on the floor
Since it is formed by frosting wet moisture on the floor,
Air above the floor is supplied to the air above the floor
Even if the temperature of the snow is controlled, problems occur in the formation of frost stacks as artificial snow layers.
There is no messing.

[Operation of Third Characteristic Configuration] In the third characteristic configuration, an ice layer is formed on the floor, and the ice layer
By forming a frost stack as an artificial snow layer on top, heat
To maintain a stable snow surface against load fluctuations and snow surface usage
To secure the cold heat capacity under the snow surface necessary for the ice layer and frost stacking.
It

Then, as described above, as the floor and the artificial snow layer,
Heat transfer due to smaller air content than frost stacking
The required cold heat capacity under the surface of the snow due to the interposition of highly reliable ice layers.
Forming a frost stack directly on the floor by securing the volume
In order to secure the required cold heat capacity under the snow surface only by frost stacking
By comparison, the upper frost stack as an artificial snow layer (ie on the ice layer
Frost stack formed by frost) and floor covering for snow surface
Increase the cooling efficiency of the equipment cooling means.

[Operation of Fourth Characteristic Configuration] In the fourth characteristic configuration, fine grain ice is spread on the floor by spraying fine grain ice.
A layer is formed and the water impregnated in this fine grain ice layer is
By freezing by the cooling action of the equipment cooling means,
Form the ice layer.

That is, in forming the ice layer, floor covering is used.
Frozen by means of equipment cooling is included in the fine grain ice stack.
Only inundation (that is, the water that exists between the ice particles)
So, for example, simply sprinkle only water on the floor,
Freeze the sprinkled water by the cooling effect of the floor-equipped cooling means.
By doing so, another method such as forming an ice layer of the same thickness on the floor
Compared to the method, the ice layer with the desired thickness can be formed efficiently and in a short time.
it can.

[Operations of Fifth and Sixth Characteristic Configurations] That is, since the frost stack has fine voids between the frost crystals, the frost stack itself has an adiabatic effect, and therefore, simply in the air.
If the humidified water is successively frosted on the surface of the frost stack by the cooling action of the cooling means in the floor to continuously grow the frost stack,
As the thickness of the frost stack increases due to growth, the heat transfer between the cooling means installed on the floor and the frost stack surface decreases significantly, so when the frost stack grows to a certain thickness, frost formation on the frost stack surface will occur. Therefore, there is a limit to the continuous growth of the frost stack and the increase in the thickness of the frost stack as the artificial snow layer.

On the other hand, in the fifth characteristic constitution, the frost laminated layer is subjected to a compression treatment in the growing process of the frost laminated layer, and in the sixth characteristic constitution, the frost laminated layer is impregnated with water in the growing process of the frost laminated layer. Then, by freezing this impregnated water, the frost layer is formed into an ice layer to a certain extent , and the ice
Upper layer frost product formed by further frost formation on layered frost stack
The cooling efficiency of the floor-equipped cooling means for the layers and the snow surface is increased.
Meru.

[Operation of Seventh Characteristic Configuration] With the seventh characteristic configuration
Cover the air area to be humidified with a cover.
And, by the above humidification, frost the humidity of the air on the floor
Easily rises to a value suitable for frost stacking in a short time
And maintain its proper humidity value.
Both will be easier.

[0033]

According to a first characterizing feature of the Effects of the Invention] [First Effect aspect Configuration of the present invention method, less necessary energy required for cooling and also unnecessary and the material cost inexpensive special raw materials such as water-absorbent resin particle In addition, since it does not require crushing processing that consumes a large amount of power, the cost for forming the artificial snow layer can be made lower than that of each conventional forming method, and even while the forming cost is made low, , It is possible to form an artificial snow layer with a snow surface that is very close to the natural snow layer.
Wear.

Regarding the maintenance of the formed artificial snow layer, the cooling means provided on the floor can prevent the formed artificial snow layer from being melted and can be maintained as in the case of forming the artificial snow layer. As described above, the cost of maintaining the artificial snow layer can be reduced as compared with the case where the entire air region on the floor (above the artificial snow layer) is cooled and maintained at an extremely low temperature to prevent melting of the formed artificial snow layer.

Further, since it is not necessary to cool and maintain the air region on the floor at an extremely low temperature as described above, unlike the case of using the method of Conventional Example 1, the artificial snow layer is formed and the artificial snow layer formed is formed. In order to keep the air area on the floor cooled to a cryogenic temperature during each use of the snow layer, the operator of the artificial snow layer and the user of the formed artificial snow layer feel cold, and the cryogenic air on the floor is used. Due to the large temperature difference between the zone and the environment outside the zone, it is possible to avoid people getting thermal shocks.
It is also excellent in terms of health, comfort and workability.

By the way, as another method for forming an artificial snow layer composed of a frost layer, humidified water given to the air is frosted by a cooling means at a place different from the place where the snow layer is to be formed, and To collect the frost generated in another place
It is also possible to transport and spray it on a predetermined floor as a snow layer formation target area to form an artificial snow layer consisting of a frost layer on the floor, but in this case, the generated frost is collected and transported. Cost and labor.

In this respect, according to the first characteristic constitution of the method of the present invention.
If, by frost humidification water in the floor air by cooling means equipped to the floor itself as Yukiso formation target location, because to directly grow formed on the floor frost laminated as an artificial snow layer by the frost, Compared with the above alternative method, it is possible to eliminate the need to collect and transport the generated frost, and reduce the cost and labor involved in forming the artificial snow layer.

[ Effect of Second Characteristic Configuration] According to the second characteristic configuration of the method of the present invention, the intended use of the method of the present invention is achieved.
Further improving the temperature environment of the air space above the floor, which is one of the purposes
Can be achieved in a comfortable manner and comfort and workability in the air space above the floor
Can be improved more effectively.

[ Effect of Third Characteristic Configuration] According to the third characteristic configuration of the method of the present invention, as an artificial snow layer
Top frost stack and cooling of floor equipment cooling means against snow surface
By being able to increase the efficiency, the upper frost stack due to frost formation
Floor covering required for formation and maintenance of the upper frost layer and snow surface
Increase the cooling temperature of the equipment cooling means (ie
Alleviate the cooling temperature condition of retirement means), a high cryocooler efficiency
It is possible to reduce the required energy.
Layers can be achieved effectively.

[ Effect of Fourth Characteristic Configuration] According to the fourth characteristic configuration of the method of the present invention, an ice layer having a desired thickness is formed.
It can be formed efficiently, and this ice layer causes upper frost.
To increase the cooling efficiency of floor-equipped cooling means for stacking
The formation of the upper frost stack by frost formation can be performed efficiently.
As a result, the required construction time as a whole can be shortened.

[ Effects of the fifth and sixth characteristic configurations] According to the fifth to sixth characteristic configurations of the method of the present invention.
For example, the cooling efficiency of the floor-equipped cooling means for the upper frost stack is increased.
Combability enables formation of upper frost stack due to frost formation.
It can be done efficiently and the required construction time can be shortened.

In addition, the upper frost layer and the floor against the snow surface
By increasing the cooling efficiency of the equipment cooling means,
Similar to the 3 characteristic configuration, formation of upper frost stack by frost formation, and
And the floor-equipped cooling hand necessary to maintain the frost layer above it and the snow surface.
Effectively reduce the required energy by raising the cooling temperature of the stage
Can be achieved.

[ Effect of Seventh Characteristic Configuration] According to the seventh characteristic structure of the method of the present invention, the humidity of the air above the floor can be controlled.
Quick and easy to reach a value suitable for forming frost stacks due to frost
Can be raised and maintain its proper humidity value
It also facilitates frost stacking due to frost formation.
Can be done efficiently.

[0044]

EXAMPLES Examples of the present invention will be described below.

FIG. 1 shows an indoor artificial snow ski area, 1 is a building, and 2 is a floor forming an artificial snow layer 3 as a slope.

Refrigerant pipes 6 for circulating a low-temperature refrigerant (for example, brine of −10 to −20 ° C.) cooled by the low-temperature refrigerator 4 through a circulation path 5 are densely arranged on the floor 2 in parallel. With the cooling by the pipe 6, the artificial snow layer 3 on the floor 2
The artificial snow layer 3 is maintained while the artificial snow layer 3 thus formed is prevented from melting.

As the air conditioning equipment for the indoor space 7, the temperature and humidity of the indoor air returned through the return air duct 8 (a part of the outside air may be mixed for indoor ventilation) are adjusted, and the adjusted air A is adjusted. An air conditioner 10 for supplying air to the indoor space 7 through an air supply duct 9 is provided, and the air conditioner 10 is equipped with a temperature control coil 11, a dehumidifier 12, and a humidifier 13, which are provided depending on the situation. And drive selectively.

For the formation of the artificial snow layer 3, the refrigerant pipe 6 is used.
Supply performs circulating operation of the low-temperature refrigerant, in parallel to the low-temperature refrigerant circulation operation, the indoor space 7 from the air conditioner 10 the air A humidified by the operation of the humidifier 13 with respect to (Sunawa
Then, the indoor space as the air space above the floor is added from the air conditioner 10.
Humidified by supplying moist air), so that the indoor space 7
Humidified water in the air due to the cooling action of the refrigerant pipe 6
Frost is formed on the floor to grow and form a frost laminate 3 having a predetermined thickness d as an artificial laminate on the floor 2.

In the initial stage of frost stacking in which the moistened water in the air directly frosts on the pipe surface of the refrigerant pipe 6, the absolute humidity Xa of the supply air A is set to the absolute value of saturated air at the pipe surface temperature Tp of the refrigerant pipe 6. In order to maintain the humidity Xp higher than a predetermined width dX1 (for example, dX1 = 5 gr / Kg '),
The amount of humidification by the humidifier 13 is adjusted and controlled by an appropriate control means, and thereafter, in the frost stack growth process in which humidified water in the air forms frost on the frost stack surface, the absolute humidity Xa of the supply air A is frost stacked. The absolute width Xs of the saturated air at the surface temperature Ts of 3 is a predetermined width dX2 (for example, dX2 = dX1).
= 5 gr / Kg ') or higher, so that the humidifier 1
Similarly, the amount of humidification by 3 is adjusted and controlled by an appropriate control means, whereby the frost stack 3 is efficiently and continuously grown through the above-mentioned initial process and growth process.

As described above, the cooling action of the refrigerant pipe 6 in the floor 2 causes the humidified water in the air to frost, thereby forming the frost stack 3 on the floor 2.
Is not a particularly important factor, but in the present example, the temperature Ta of the supply air A is set to 1 when the relative humidity Ra of the supply air A is 1.
It is adjusted so as to be not less than 00%, whereby the formation of the frost stack 3 due to frost formation is further promoted.

Further, in adjusting the temperature Ta of the supply air A, the temperature Ta of the supply air A is adjusted to the highest temperature in the range where the relative humidity Ra is 100% or more as described above . For indoor person in indoor space 7
A temperature environment that is as good as possible, that is, the indoor space 7 is too cold
In this situation, indoors feel cold, and
Thermal shock due to large temperature difference with outdoor
Use a temperature environment that will not cause any problems. (As an example, in the frost stacking growth process in which humidified water in the air frosts on the frost stacking surface, when the surface temperature Ts of the frost stacking layer 3 is set to 5 gr / Kg ′ under the condition of −5 ° C.,
Supply supersaturated air A (air mixed with fine water droplets) adjusted to 8.0 ° C. DB and about 7.5 gr / Kg ′).

The humidifier 13 can be of various types such as a vapor spray type, but in this example, as shown in FIG. 2, water adjusted to a temperature equal to the air supply temperature Ta for the indoor space 7 is used. The target air A is passed through the sprinkling area 13a of the target air A to adjust the target air A to the predetermined temperature T.
a to the supersaturated air, and then the adjusted air A is passed through the juxtaposed region of the draining plate 13b to obtain the adjusted air A.
A so-called washer-type humidifier 1 for draining the adjusted air A by trapping relatively large water droplets in the draining plate 13b.
No. 3 is adopted, and thereby, the air A to be adjusted is supplied with the fine water droplets suitable for the formation of the frost stack 3 due to the frost formation as described above, while being advantageous in terms of thermal energy as compared with the case of adopting the vapor spray type humidifier. Desirably, temperature and humidity are adjusted to supersaturated air mixed with water droplets of 10 microns or less).

In terms of air temperature, indoor sky
In this way, the adjusted air A supplied to
Air of a temperature that can exist in the air as small water droplets (that is,
At least air higher than 0 ° C, in the above example
By setting the temperature to 8.0 ° C DB), the indoor space 7
The above-mentioned temperature environment is improved.

When the frost stack grows to a certain thickness in the growth process of the frost stack 3, the frost stack 3a up to then is subjected to a compression treatment, or the frost stack 3a up to that time is sprinkled with water. Is impregnated and the impregnated water is frozen by the cooling action of the refrigerant pipe 6, whereby the frost stack 3a up to that point is formed into an ice layer to some extent, and due to this ice formation, the heat transfer properties of the frost stack 3a up to that point (That is, the heat transfer between the refrigerant pipe 6 and the surface of the frost stack 3a) is recovered, and thereafter, the humidified water content in the air on the compressed frost stack or the impregnated water frozen frost stack 3a that has been ice-layered. Due to frost formation, the frost stack 3b is efficiently and continuously grown on the compressed frost stack or the impregnated water frozen frost stack 3a.

Frost stacking 3 by compression or impregnation water freezing 3
The ice layer a is formed by frost stacking 3 with a predetermined thickness d as an artificial snow layer.
In the process of forming, the process is performed once or plural times at appropriate intervals.

When the formation of the frost stack 3 having the predetermined thickness d as the artificial snow layer is completed, the operation of the humidifier 13 is stopped, and thereafter, the formation of the frost stack 3 is prevented by cooling by the refrigerant pipe 6. The artificial snow layer is maintained, and in this artificial snow layer maintaining state, the dehumidifier 12 in the air conditioner 10 is operated and the absolute air humidity XA in the indoor space 7 is adjusted to the saturated air at the surface temperature Ts of the frost stack 3. Of the absolute humidity Xs of the indoor space 7
The amount of dehumidification by the dehumidifier 12 is adjusted and controlled by an appropriate control means so that the partial pressure of water vapor in the air is maintained at a value almost equal to the water vapor pressure on the surface of the frost laminate 3.

That is, in forming the frost stack 3 as an artificial snow layer and maintaining the frost stack 3, the cooling temperature Tp of the refrigerant pipe 6 allows the frost stack 3 to grow to a predetermined thickness d, and The temperature is limited to a temperature sufficient to prevent melting of the frost stack 3 having the predetermined thickness d (for example, the temperature at which the surface temperature Ts of the frost stack 3 grown to the predetermined thickness d becomes -1 to -2 ° C). Although energy saving is achieved by this, when the cooling temperature Tp of the refrigerant pipe 6 is limited in this way, the water supplied to the indoor air by the introduction of the outside air or the breathing of the indoor person in the artificial snow layer maintaining state is absorbed in the refrigerant pipe 6. There is a problem that condensation (condensation or frost near condensation) on the surface of the frost laminated layer 3 having a temperature higher than the cooling temperature Tp causes the snow surface of the artificial snow layer 3 to become a so-called sticky snow surface. Such as the moisture in the indoor air on the surface of the frost layer 3 Frost stacked from the indoor air side to 3
Since the latent heat is transferred to the side, the cooling load of the refrigerant pipe 6 in the artificial snow layer maintaining state becomes large, which causes a problem that achievement of energy saving is hindered.

Therefore, by dehumidifying the indoor air as described above in the artificial snow layer maintaining state, the frosted layer 3 surface (snow surface) of the moisture in the indoor air is limited while limiting the required cooling temperature of the refrigerant pipe 6. Is prevented, so that the snow surface is stably maintained in a good condition suitable for skiing, and the increase of the cooling load of the refrigerant pipe 6 due to the latent heat transfer from the indoor air side to the frost stacking 3 side is avoided. To effectively save energy.

In the artificial snow layer maintaining state, the temperature control coil 11 in the air conditioner 10 is operated to adjust the temperature of the supply air A to the indoor space 7 in addition to the dehumidifying operation described above. The indoor space 7 is cooled or heated within a range that does not impair the property, and within a range that does not impair the prevention of melting of the frost stack 3 by the cooling action of the refrigerant pipe 6.

When the thickness of the frost layer 3 as the artificial snow layer is reduced due to scraping of the snow surface by skiing or the like, the humidifier 13 is operated to operate the indoor space as in the initial artificial snow layer formation.
The thickness of the frost stack 3 is restored by frosting the humidified air in the space 7 on the residual frost stack 3 by the cooling action of the refrigerant pipe 6.

[Other Embodiments] Next, other embodiments will be listed.

The cooling means equipped on the floor 2 is not limited to the parallel refrigerant pipe 6 as in the above-described embodiment, but for example, the floor 2 has a double floor structure and the double floor gap is the refrigerant flow passage. It is possible to employ various types such as a structure having such a structure, or a cooling panel shape arranged side by side on the floor 2.

The humidified water supplied to the air area 7 on the floor 2 is supplied to the floor 2
Frost on the floor by the cooling means 6 equipped on the artificial snow layer
Moisture in the air is added to the floor to form the frost stack 3
In addition to frost formation on the floor 2 with a spray nozzle, etc.
Cooling means equipped on the floor 2 with the water mist supplied to the air area 7 of
Combined with frosting on the floor by 6
You may.

A combination of humidifying means for giving humidified water to the air on the floor 2 and the above-mentioned water mist freezing on the floor are combined.
Various types of water mist supply means can be adopted for application.

In the above-mentioned embodiment, the frost laminate 3 was formed directly from the floor 2, but instead of this, as shown in FIG. 3, prior to the formation of the frost laminate 3 as the artificial snow layer, the frost laminate 3 is formed on the floor 2. Ice layer 14 is formed on the
The humidifying water is cooled by the cooling means 6 provided on the floor 2.
Frost (or, in some cases, water mist floor
It is also possible to form a frost stack 3 as an artificial snow layer on the ice layer 14 by performing a combination of upper freezing .

Further, in forming the ice layer 14, as shown in FIG. 3, fine-grained ice produced by the ice making machine 15 is sprinkled on the floor 2, and the sprinkled ice layer is formed. (Fine grain ice layer) is impregnated with water by sprinkling water or the like, and the impregnated water is frozen by the cooling means 6 equipped on the floor 2 to form the frost layer 3 as the artificial snow layer on the floor 2 before forming the frost layer 3. The method of forming the ice layer 14 is rational.

When moisturizing water is applied to the air on the floor 2 by the humidifying means or when the above-mentioned water mist is supplied in combination, the cover 1 as shown by the broken line in FIG. 3 is used.
6 to cover the air area on the floor 2 to limit the air area on the floor,
Then, moisturizing water may be added or water mist may be supplied only to the restricted air space above the floor, and in particular, the air space restriction by the cover 16 is performed when the air space above the floor 2 is an open atmosphere region. Is effective for. If the cover 16 is released after the formation of the frost stack 3 as the artificial snow layer is completed, the cover 16 will not hinder the use of the artificial snow layer.

Frost stack 3a carried out during growth of frost stack 3
The compression process for the above, or the process of impregnating the frost stack 3a with water and freezing the impregnated water, that is, the process of forming the frost stack 3a in the growing process into an ice layer to some extent may be omitted.

After the formation of the frost layer 3 as the artificial snow layer, the surface layer portion of the formed frost layer 3 may be subjected to a compression process or a digging process in order to adjust the quality of the snow surface.

The use of the frost laminate 3 as the artificial snow layer is not limited to skis, and can be applied to various uses in various fields.

The floor 2 may have any form such as a horizontal plane floor, an inclined floor, an uneven floor, or a narrow passage-like floor.

It should be noted that although reference numerals are given in the claims for convenience of comparison with the drawings, the present invention is not limited to the configurations of the accompanying drawings by the entry.

[Brief description of drawings]

[Fig.1] Facility structure diagram of indoor artificial snow ski resort

[Figure 2] Principle of humidifier

[Fig. 3] An equipment configuration diagram of an indoor artificial snow ski resort showing another embodiment

[Explanation of Codes] 2 Floor 3, 3a Frost Laminate 6 Cooling Means 7 Air Area 13 Humidifying Means 14 Ice Layer 16 Cover

Claims (7)

[Claims] 1. On a floor (2) equipped with cooling means (6).
The air area (7) is humidified by the humidifying means (13), and this humidification is performed.
Humidified water in the air given by humidity is supplied to the cooling means (6).
A method for forming an artificial snow layer in which frost is formed on the floor under a cooling action to form a frost stack (3) as an artificial snow layer on the floor (2). 2. For the air zone (7) above the floor (2)
As a temperature adjustment for this air range (7),
The artificial snow layer type according to claim 1, wherein high temperature air (A) is supplied.
How to do it. 3. Prior to the formation of said frost stack (3)
An ice layer (14) is formed on the floor (2) and the above- mentioned heating in air is carried out.
Under the cooling action of the cooling means (6),
Frost is formed on the ice layer (14), and on this ice layer (14)
Forming said frost stack (3) as an artificial snow layer.
Or the method for forming an artificial snow layer according to 2 . 4. The ice layer (14) is on the floor (2).
When fine-grained ice is sprayed to form a fine-grained ice stack on the floor,
The water impregnated in this fine-grain ice layer is used as the cooling means.
4. Formed by freezing by the cooling action of (6).
Artificial snow layer forming method of the placement. 5. The compressed frost laminate (3a) is obtained by subjecting the frost laminate (3a) to a compression treatment during the growth process of the frost laminate (3).
The above-mentioned humidified moisture in the air is cooled by the cooling means (6).
Contract for frost formation under action to grow the frost stack (3)
The method for forming an artificial snow layer according to claim 1, 2, 3, or 4 . 6. The frost stack (3a) is impregnated with water during the growth process of the frost stack (3), and the impregnated water is frozen.
On the impregnated water frozen frost laminate (3a), the humidifying water in the air is added.
The portion is frosted under the cooling action of the cooling means (6),
The frost stack (3) is grown, as described in claim 1, 2, 3 or 4.
Artificial snow layer forming method of the placement. 7. In the process of forming the frost stack (3),
Covering the air area on the floor (2) with a cover (16 ) to limit the air area (7) to be humidified.
The method for forming an artificial snow layer according to 1, 2, 3, 4, 5 or 6 .