JPH06300405A - Snow-making machine - Google Patents

Abstract

PURPOSE:To prevent freeze at a downward curve in a snow-carrying tubular conduit at the time of stopping of the forced feeding of snow by making a lid member open and close a drain hole. CONSTITUTION:In a snow-carrying tubular conduit 12 provided along a laying line 7 corresponding to an undulating skiing slope a drain hole 12a is provided at a position corresponding to a pit 7b where the laying line 7 is bent downward. There is provided a draining mechanism 16 having a lid 19 which freely opens and closes and, when snow is carried, closed the drain hole 12a under the pressure of the forwarding air. When snow is carried, the lid 19 is made to close the drain hole 12 and snow is fed through a snow-carrying space 12s by a means for feeding snow under pressure; the snow is ejected from a discharge nozzle and spread on a slope. When this feeding of snow under pressure is stopped, the force of upheaval FU of a spring mechanism 20 acts and the lid 19 opens; with the snow-carrying space 12s opened to the outside, the snow remaining therein melts through rise of the air temperature and the water is discharged through a drain pipe 17.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to snow-sprinkling equipment suitable for application to a ski slope on an artificial ski resort.

[0002]

2. Description of the Related Art FIG. 5 is a schematic view showing an example of an artificial snowfall system used in a conventional artificial ski resort. Conventionally, an artificial snowfall system 110 used in an artificial ski resort is, for example, as shown in FIG.
0 ', an ice storage 11', and an ice and snow pumping device 1 ', and the ice and snow pumping device 1'has a pipe line 8 for pumping the ice and snow 60 supplied to the ice and snow feeder 3. That is, the water 61 is supplied to the ice making device 10 'by a pump or the like (not shown).
The ice making device 10 ′ is made to produce ice and snow 60 from the water 61 supplied to the ice making device 10 ′. Thus, the ice making device 1
The ice and snow 60 produced with 0'is stored in the ice storage 11 '. Then, when it is necessary to spray ice and snow on the slope 40, the ice and snow 60 is taken out from the ice storage 11 ′, and the ice and snow 60 is supplied to the ice and snow feeder 3 of the ice and snow pumping device 1 ′. In the ice and snow pumping device 1 ′, the blower 2 is driven to suck the external air into the pipe 8 through the air filter 2a to compress the air, and then the air heated by the adiabatic compression of the blower 2 The heat exchanger 5 such as a cooler returns the temperature to the temperature before the suction and generates air 50, which is supplied to the ice and snow feeder 3. And the ice and snow 60 supplied from the ice storage 11 '
And the air 50 cooled by the heat exchanger 5 to the ice and snow feeder 3
Mix in. Then, from the ice and snow feeder 3 to the pipeline 8
The ice and snow 60 supplied into the inside is supplied to the slope 40 through the ice and snow pressure-feeding pipe 30 while being crushed into small pieces due to collision with the inner wall of the pipe line 8 during the pressure-feeding. Therefore,
The ice pieces 60 that have been fragmented are used to form the slope 40.
It was taken out through the spray hose 35 from the first to n-th outlets 31 to 3n that can be opened and closed provided corresponding to the n-th spray areas 41 to 4n, and the ice and snow 60 was sprayed for each spray area 4n. .

[0003]

However, the ice and snow pumping pipe 30 used in the artificial snowfall system 110 is
Since it is laid along the surface of the slope 40 so as to follow the undulations of the first to n-th spraying areas 41 to 4n, ice and snow 60 is apt to stay in the bent portion of the pipeline 8.
Therefore, when the ice and snow pressure-feeding device 1 ′ is stopped, the ice and snow 60 that has accumulated in the pipeline 8 gathers in the valley portion near the retention point, and is hard to avoid in the valley 30 a portion of the ice and snow pressure-feeding pipe 30. The ice and snow pool 6 is formed in a shape. Then, when the weather becomes good and the temperature rises while the ice and snow pumping device 1 ′ is stopped, the ice and snow 60 forming the ice and snow pool 6 melts into water, and when the temperature subsequently drops, the ice and snow pool 6
Of water freezes in the valleys 30a of the ice and snow transport tube 30, and the pipeline 8 is clogged. In this state, the ice and snow pumping device 1 '
When the operation is restarted, the ice blower 2 that composes the ice and snow pumping device 1 ′ is blocked by ice and snow to be transported at the portion due to the freezing generated in the valley 30 a, and an excessive load is applied. Takes. For this reason, every time the ice and snow pumping device 1'is stopped, the frozen state of the valley 30a must be inspected, and the ice and snow pumping device 1'cannot be re-started. There was an inconvenience that it took time. Therefore, in view of the above circumstances, the present invention is capable of preventing freezing from occurring in a valley portion of a pipeline for ice and snow transportation by stopping the pumping of ice and snow. The purpose is to provide.

[0004]

That is, the present invention has a snow and snow carrier pipe (12) installed along a laying line (7) set in a shape corresponding to the ups and downs of a slope (40),
Inside the ice / snow transport pipe (12), the ice / snow transport space (12)
s) is formed, and ice and snow supply pressure feeding means (1, 10) are connected to the ice and snow transport pipe (12), and ice and snow (60) is freely fed to the ice and snow transport space (12s), and the ice and snow transport is performed. The pipe (12) is provided with a discharge means (15) so that ice and snow (60) supplied to the ice and snow transfer space (12s) can be freely discharged, and the laying line (7) of the ice and snow transfer pipe (12) is provided.
Drainage port (12a) at a position corresponding to the valley (7b)
Is formed so as to communicate with the inside and outside of the ice and snow transport space (12s), and the lid member (19) is attached to the drain port (12a).
Is provided by arranging the drain port (12a) in a freely openable and closable manner. The numbers in parentheses are for convenience of showing the corresponding elements in the drawings, and therefore the present description is not limited to the description in the drawings. The same applies to the following action columns.

[0005]

With the above-described structure, the present invention provides a lid member (1
9) opens and closes the water draining port (12a), so that the ice and snow carrying space (12s) becomes a valley part (7) of the laying line (7).
At the position corresponding to b), the ice and snow transport space (12
s) It acts so as to communicate with or cut off from the outside.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a diagram showing an example of an artificial ski resort to which an embodiment of the snow-sprinkling equipment according to the present invention is applied, and FIG. 2 shows an example of a water draining mechanism used in the snow-spraying equipment shown in FIG. FIG. 4 is a partially cutaway perspective view, FIG. 3 is a view showing a state during ice / snow transport in the water draining mechanism portion shown in FIG. 2, and FIG. 4 is a diagram showing a state during stop of ice / snow transport in the water draining mechanism portion shown in FIG. .

The artificial ski resort 39, as shown in FIG.
It has a slope 40 which is a region where snow is to be sprayed, and the slope 40 is provided with a snow spraying facility 100 for spraying granular ice snow 60 (snowflake) to be sprayed on the slope 40 as artificial snow. ing. Snow equipment 10
Reference numeral 0 denotes a snowmaking plant 9 installed in a plant installation area 40a shown in the lower right part of FIG. 1 of the slope 40, and a snow and snow pressure-feeding device 1 for spraying the snow and snow 60 produced in the snowmaking plant 9 onto the slope 40. , And the ice and snow pressure-feeding pipe 12 which is an ice and snow transport pipe.

In the snow making plant 9, an ice making device 10 is provided at the upper part of FIG. 1 of the snow making plant 9 in a form capable of producing ice snow 60 which is artificial snow, and is provided on the lower layer side of the ice making device 10. The ice storage 11 is provided such that the ice and snow 60 produced by the ice making device 10 can be received and stored in the storage tank. An ice-snow pumping device 1 is provided below the ice storage 11, and the ice-snow pumping device 1 supplies a ice-snow 60 from a snowmaking plant 9 to an ice-snow pumping pipe 12.
3 is provided in a form capable of receiving the ice and snow 60 stored in the ice storage 11 by a predetermined amount per unit time and supplying the ice and snow 60 to the ice and snow transport space 12s formed inside the ice and snow pumping pipe 12. A blower 13 for pumping ice and snow 60 in the feeder 33 is connected to the feeder 33 on the right side in FIG. 1 so as to freely pump the ice and snow 60 to the ice and snow transport space 12s. In the meantime, the heat exchanger 5 cools the compressed air 50 'generated and discharged by the blower 13 to adjust the temperature to a predetermined temperature.
Is provided in the feeder 33 at a predetermined pressure. Therefore, the ice making device 10 and the ice-and-snow pressurizing device 1 installed in the snowmaking plant 9 pass the pressure of the air 50 to the ice-and-snow carrying space 12s of the ice-and-snow pumping pipe 12 which constitutes the ice-and-snow carrying pipe in the snow-sprinkling equipment 100. The ice and snow supply pipe 12 is connected to the ice and snow supply pipe 12 to form an ice and snow supply pressure supply means for supplying and supply ice and snow 60.

On the left side of FIG. 1 which is the discharge side of the feeder 33, the ice and snow pressure feeding pipe 12 is connected so as to connect the snowmaking plant 9 and the slope 40, as shown in FIG.
The ice-and-snow pressure-feeding pipe 12 is installed along the laying line 7 set in a shape corresponding to the ups and downs of the slope 40. The laying line 7 is set so as to extend substantially along the directions of arrows A and B in FIG. 1, which is the ice and snow transport direction, and the laying line 7 is formed in the valley 40b formed by the ups and downs of the slope 40. The depression 7b is formed along the valley 40b. Inside the ice and snow pumping pipe 12 installed along the laying line 7, there is an ice and snow transport space 12s.
However, the ice and snow 60 discharged and supplied from the feeder 33 to the ice and snow transport space 12s can be transported along the laying line 7 and is formed to have a circular cross-sectional shape over its entire length. There is. Further, discharge nozzles 15 which are means for discharging ice and snow are connected to the ice and snow pressure feed pipe 12 so that the inside of each of the discharge nozzles 15 and the ice and snow transport space 12s are in communication with each other so that a predetermined interval is formed on the slope 40. A plurality of open / closed connections are arranged, and each discharge nozzle 15 supplies ice / snow 60, which has been pressure-fed to the ice / snow transport space 12s of the ice / snow pressure feed pipe 12, from the discharge port 15a, which is the opening end, to the slope 40. Each can be discharged freely.

By the way, the ice-and-snow pressure-feeding pipe 12 is shown in FIG.
As shown in, a plurality of water drainage mechanisms 16 are provided along the laying line 7 in which the ice and snow pressure-feeding pipe 12 is installed,
As shown in FIG. 2, the water draining mechanism 16 includes the ice and snow pressure feed pipe 12
The drain pipe 17 has a predetermined length L1 in a direction intersecting the extending direction of the drain pipe 17. Each drain pipe 17 has a diameter corresponding to the diameter of the water drain hole 12a formed in the water drain hole 12a formed in the ice and snow pressure feed pipe 12 at a position corresponding to the recess 7b of the laying line 7 as a water drain port of the ice and snow pressure feed pipe 12. They are attached here in the form of a corresponding diameter, and each drain hole 12
The opening a is formed so as to communicate the inside and outside of the ice and snow transport space 12s. A drain port 17a is formed at the lower end of the drain pipe 17, while a drain plate 17 is formed at the upper end of the drain pipe 17 in a disc shape corresponding to the diameter of the drain hole 12a in which the drain pipe 17 is mounted. A lid 19 which is a closed lid member is attached to each of the drain holes 12a so as to be openable and closable.

That is, the fixed end 19 shown at the right end of FIG.
A spring mechanism 20 is attached to each a in a manner such that the lower end side of the spring mechanism 20 is fixed to the drain pipe 17, and the lid 19 is freed by the spring mechanism 20 by a predetermined pushing force FU. The side is fixedly supported by the drain pipe 17 while being biased in the direction of arrow C in FIG. Then, in a normal state, the lid 19 is, as shown in FIG.
The drainage hole 12a is formed in such a manner that the ice-snow transfer space 12s, which is the inside of the ice-snow pumping pipe 12, communicates with the inside of the drain pipe 17.
Is maintained in an open state, and the lid 19 receives a force against the pushing-up force FU.
As shown in Fig. 1, drainage hole 1 is formed by covering the drain pipe 17.
2a can be closed. Further, as shown by a dotted line in FIG. 2, a heater 21 which is a heating wire is attached to the drain pipe 17 in a spiral shape along the circumference of the pipe wall of the drain pipe 17. The pipe 17 and the drainage hole 1 in which the pipe 17 is attached
The ice and snow pressure supply pipe 12 around 2a is configured to be heated by supplying a heat source to the heater 21 via a power source (not shown).

The artificial ski resort 39 and the snow-sprinkling equipment 100 are
Since it has the above-mentioned structure, the slope 40
In order to spray the ice and snow 60 on the snow, the ice making device 10 of the snow making plant 9 makes the ice and snow 60 having a substantially predetermined particle size, and the ice and snow pressure feeding device 1 is used to make the ice and snow pressure feeding pipe which is the ice and snow transport pipe. 1
2 through the laying line 7 corresponding to the ups and downs of the slope 40, and the discharge port 15 of any discharge nozzle 15
It is sprayed on the slope 40 in the form of being discharged from a. Therefore, first, the ice making device 10 is operated to make ice and snow 60, and the ice and snow 60 is stored in the ice storage 11. And
When performing artificial snowfall, ice and snow 60 is supplied from the ice storage 11 to the ice and snow feeder 33 by a predetermined amount per unit time. Along with this, the blower 13 is driven so that the compressed air 5
The air 50 whose temperature is lowered by generating 0 ′ and heat-exchanging the compressed air 50 ′ through the heat exchanger 5 is supplied to the ice and snow feeder 33 at a predetermined pressure. Then, the ice and snow feeder 33 mixes a predetermined amount of ice and snow 60 with the air 50, and this is mixed with the ice and snow transport space 12s of the ice and snow pressure-feeding pipe 12.
Supply by pressure. The ice and snow 60 thus pressure-fed and supplied to the ice-and-snow transport space 12s by the ice-and-snow feeder 33 and the blower 11 has a pressure of the air 50 whose temperature has dropped to a predetermined temperature, along the laying line 7 in which the ice-and-snow pressure-feeding pipe 12 is installed, that is, While rolling up and down according to the ups and downs of the slope 40, the ice and snow transportation space 12s is transported toward the arrow A direction.
The ice and snow 60 conveyed along the ups and downs of the slope 40 through the ice and snow pressure-feeding pipe 12 passes through each of the discharge nozzles 15 which are discharge means provided in the ice and snow pressure-feeding pipe 12, respectively.
Ice and snow 60 are discharged from each of the discharge ports 15a. In this way, the ice and snow pressure-feeding pipe 1 via the ice making device 10 and the ice and snow pressure-feeding device 1
The ice and snow 60 supplied under pressure to 2 is transported through the ice and snow transport space 12s, and is distributed and sprayed from the plurality of discharge nozzles 15 to the entire surface of the slope 40.

By the way, as described above, the ice-snow transport space 12 of the ice-snow pumping pipe 12 via the ice-snow pumping device 1 shown in FIG.
When ice and snow 60 is pressure-fed to s, the ice and snow transport space 1
During 2 s, as shown in FIG. 3, ice-snow 60 is transported by the pressure of the air 50 in the direction of arrow A, which is the ice-snow transport direction, so that the pumping force FA is generated substantially along the direction of arrow A. Then, during the ice and snow conveyance, in each water draining mechanism 16 provided in the ice and snow pressure feeding pipe 12, the pressure feeding force FA overcomes the pushing-up force FU of the spring mechanism 20, and the lid 19 closes the water draining hole 12a. I have to. Then, the ice / snow transport space 12s is cut off from the inside of the drain pipe 17, that is, the outside of the ice / snow transport space 12s by the lid 19. As a result, the ice and snow 60 is smoothly transported in the ice and snow transport space 12s without leaking to the outside from the water drain hole 12a. The heating operation by the heater 21 is cut off during the ice and snow transportation.

On the other hand, when the operation of transporting and spraying the ice and snow 60 on the slope 40 is interrupted or ended, the supply of the ice and snow 60 by the ice and snow feeder 33 is stopped, and then the operation of the blower 13 is stopped. The operation and driving of the ice and snow pressure-feeding device 1 are interrupted in the form of stopping the pressure-feeding of the air 50.
As a result, the spraying of ice and snow 60 from the discharge nozzles 15 to the slope 40 is interrupted. However, the ice-snow pumping pipe 12, to which the ice-snow 60 was being fed under pressure during ice-snow transportation, was installed along the laying line 7 that was set in a shape corresponding to the ups and downs of the slope 40. The ice and snow 60 inevitably stays slightly in the bent portion, and even if the supply of pressure and supply of the ice and snow 60 is stopped, the ice and snow 60 cannot be completely discharged from the inside of the ice and snow transport space 12s, and it is unavoidable. There will be some left here. Then, the ice and snow 60 remaining in the ice and snow transport space 12s is directed toward the valley 40b of the slope 40 due to the stop of the air 50, and the ice and snow transport of the ice and snow pumping pipe 12 installed in the portion located in the depression 7b of the laying line 7 is performed. It collects in the space 12s.

Then, the ice and snow pumping pipe 12 is provided with the water draining mechanism 16 at the portion installed so as to be located in the depression 7b which is the valley portion of the laying line 7, so that the ice and snow 60 is supplied. As shown in FIG. 4, the ice and snow 60 left behind in the ice and snow transport space 12s due to the stop of the pressure feeding gathers in the vicinity of each water draining mechanism 16. At this time, in each water draining mechanism 16, the lid 19 that has closed each water draining hole 12a at the time of ice and snow transportation loses the pressure-feeding force FA from the ice and snow transportation space 12s by stopping the air 50, as shown in FIG. As a result, the pushing-up force FU of the spring mechanism 20 is restored and pushed up in the direction of arrow C. As a result, the drain hole 12a is opened, and the ice-and-snow transport space 12s communicates with the inside of the drain pipe 17, that is, the outside of the ice-snow transport space 13s by opening the drain hole 12a. Therefore, when the heater 21 is heated in this state, the drain pipe 17 is heated, thereby warming the ice and snow pressure feeding pipes 12 near each water draining mechanism 16. As a result, the ice and snow 60 that has accumulated in the ice and snow transport space 12s near the water draining mechanism 16 melts, and FIG.
As shown by the arrow, the melted ice / snow 60 flowing into the drain pipe 17 is discharged as water 61 from the drainage port 17a to the outside of the ice / snow transport space 12s. The ice / snow 60 accumulated in the ice / snow transport space 12s is heated by the heater 2
Not only does the water 61 become heated by the heating of 1, but also when the slope 40 rises in temperature, the water 61 naturally becomes the water 61 and is discharged to the outside of the ice and snow transport space 12s from the drainage port 17a as described above.

Thus, due to the interruption of the ice and snow transportation work,
The ice and snow 60 left behind in the pipe ice and snow transport space 12s of the ice and snow pressure feed 12 is left from the drainage port 17a of each water draining mechanism 16 through each water draining hole 12a in which the lid 19 is opened due to the stop of the pressure feeding of the air 50. It is discharged cleanly. Therefore,
In this state, even if the ice and snow transportation work is suspended and the temperature of the artificial ski resort 39 rises, the melted ice and snow 60, that is, the water 61, collects in the ice and snow transportation space 12s in the depression 7b of the laying line 7. Never. Therefore, in order to repeat the ice and snow transportation work again as described above, the ice and snow pressure feeding device 1
There is no risk that the blower 2 is subjected to an excessive load corresponding to the force for blowing the water 61 accumulated in the depression 7b toward the ice and snow conveyance direction when starting the driving operation. Furthermore, even if the temperature of the artificial ski resort 39 rises and then drops, the ice and snow 60 that has melted in the ice and snow transport space 12s freezes, blocking the ice and snow transport space 12s, and hindering the transport of ice and snow. Absent. Therefore, if the snow-sprinkling equipment 100 is used, the lid 19 opens the water drain hole 12a so that the pushing-up force FU of the spring mechanism 20 is restored by stopping the pressure-feeding supply of the ice-snow 60, and the inside and outside of the ice-snow transport space 12s are opened and closed. In order to establish a communication state, ice / snow 60 or melted water 61 accumulated in the ice / snow transport space 12s of the portion of the ice / snow pumping pipe 12 installed in the valley 7b of the laying line 7 is discharged through the drain hole 12a. It can be solved without trouble by discharging it from the ice and snow transport space 12s to the drain pipe 17 side. Therefore, it is possible to restart the operation immediately and repeat the ice and snow transport work without inspecting the frozen portion of the ice and snow pressure supply pipe 12 every time the operation of the ice and snow pressure supply device 1 is stopped. Can be sprayed on.

In the above-described embodiment, the lid 19 attached to the drain pipe 17 of the water draining mechanism 16 is constructed so that the water draining hole 12a of the ice and snow pumping pipe 12 can be opened and closed by the spring mechanism 20. However, the drain mechanism 16 may be formed of bimetal instead of the spring mechanism 20 so that the lid 19 can open and close the drain hole 12a. That is, the lid 19 is attached here in such a manner that the drain hole 12a can be opened by heating the heater 21. Then, at the time of the ice and snow transfer work, the temperature of the ice and snow pumping pipe 12 is low, so that the lid 19 is closed.
The drain hole 12a is closed in the same manner as shown in FIG.
The ice and snow transport space 12s is shielded from the outside. Then, the ice and snow 60 does not leak to the outside of the ice and snow transport space 12s such as the inside of the drain pipe 17 in the depression 7b of the laying line 7, and smoothly along the laying line 7, that is, the slope 40.
It is transported according to the ups and downs of. Then, when the ice and snow transportation work is interrupted, the heater 21 is heated, and the lid 19 opens the water drain hole 12a in the same manner as shown in FIG. 4 to communicate the ice and snow transportation space 12s to the outside. At this time, the ice and snow 60 accumulated in the ice and snow transport space 12s in the depression 7b is melted into water 61. As a result, the ice and snow 60 accumulated and melted in the ice and snow transport space 12s in the depression 7b is quickly discharged from the water drain hole 17a to the outside of the ice and snow transport space 12s through the drain pipe 17. That is, the ice and snow 60 accumulated in the depression 7b is quickly eliminated. Further, the lid member such as the lid 19 can be opened or closed with a drain hole 12a which is a drain port provided at a position corresponding to the valley portion 7b of the laying line 7 of the ice and snow pumping pipe. You can present it. Further, the drain pipe 17 and the heater 21 mounted here in the embodiment may have any shape as long as the ice and snow 60 can be discharged from the drain hole 12a, or these drain pipe 17 and The heater 21 may be omitted. Also, drain hole 1
The drainage ports such as 2a are recesses 7 which are valleys of the laying line 7.
If an opening is formed in the ice and snow pumping pipe 12 located at b,
The shape and the arrangement position are arbitrary.

Further, in the embodiment, the ice and snow 60 generated by the ice making device 10 is fed by the ice and snow pumping device 1.
An example in which the ice making device 10 and the snow and snow pressure feeding device 1 are configured as ice and snow supply and pressure feeding means by pressure feeding to the ice and snow pressure feeding pipe 12 via the air 50 has been described. The configuration of the supply pressure feeding means is not limited to this. Therefore, the mechanical device for constituting the ice and snow supply pressure feeding means and the equipment required for this are arbitrary. Further, the discharge nozzle 15 may have any shape and arrangement pitch as long as it can discharge the ice and snow 60 supplied to the ice and snow transport space 12s. Further, the ice and snow 60 stored by the snow storage facility 100 is not limited to the ice and snow 60 artificially made by the ice making device 10 or the like, and may be ice and snow collected and stored or natural snowfall.
The shape and configuration of the snowmaking plant 9 installed in the slope 40 and the plant installation area 40a thereof are arbitrary.

[0019]

As described above, according to the present invention,
The ice / snow transport pipes such as the ice / snow pressure transport pipe 12 installed along the laying line 7 set in a shape corresponding to the ups and downs of the slope 40 are formed, and the ice / snow transport space 12s is formed inside the ice / snow transport pipe. The ice and snow supply pipe is provided with ice and snow supply pressure feeding means such as the ice and snow pressure feed device 1 and the ice making device 10 at the ice and snow feed space 12s.
Ice / snow 60 is connected to the ice / snow transport pipe in a freely feedable manner, and discharge means such as a discharge nozzle 15 is provided in the ice / snow transport pipe so that the ice / snow 60 supplied to the ice / snow transport space 12s can be freely discharged. 12, a water draining hole such as a water draining hole 12a is formed at a position corresponding to a valley portion such as the depression 7b of the laying line 7 so as to communicate with the inside and outside of the ice and snow transport space 12s.
Since the water drain port is provided with a lid member such as a lid 19 so that the water drain port can be opened and closed, the lid member opens and closes the water drain port to form the ice and snow transport space 12s. At the position corresponding to the valley of the ice and snow transport space 1
It can be connected or disconnected from the outside for 2 seconds. Therefore,
When carrying out the ice and snow transportation work using the ice and snow transportation pipe, the water drain port is closed in the lid member to shut off the ice and snow transportation space 12s from the outside, and in this state, the ice and snow transportation space 12s is loaded with the ice and snow 60. If supplied, the entire ice and snow 60 is conveyed to the ejection means through the ice and snow conveyance space 12s that is shielded from the outside, and is ejected from the ejection means to the slope 40. Therefore, the ice and snow 6 supplied by the ice and snow supply pumping means 6
0 is transported along the laying line 7 set in a form corresponding to the ups and downs of the slope 40 without leaking to the outside of the ice and snow transport space 12s during transport, and is reliably discharged from the discharge means. On the other hand, when such ice and snow transport work is stopped, some ice and snow 60 remains in an unavoidable form in the ice and snow transport space 12s of the ice and snow transport pipe. On this occasion,
The ice and snow 60 is installed on the laying line 7 on which the ice and snow carrier pipe 12 is laid.
In the form of gathering toward the valley portion, the ice / snow transport space 12s located in the valley portion collects. When the temperature of the slope 40 rises in this state, the ice and snow transport space 12s located in the valley
The ice and snow 60 accumulated in the water melts into water. Therefore, if the water drain port is opened in the lid member and the ice / snow transport space 12s is communicated with the outside, the water collected in the valley portion of the laying line 7 is discharged from the open drain port to the ice / snow transport space 12s. It can be easily discharged to the outside. Therefore, according to the snow-sprinkling equipment of the present invention such as the snow-spraying equipment 100, the water accumulated in the valley portion of the ice-and-snow conveying pipeline by stopping the pressure-feeding of the ice and snow is discharged through the drainage port. Since it can be discharged to the outside, there is no risk that water accumulated here will freeze in the valley portion of the pipeline. Therefore, if ice snow 60 is sprayed on the slope of an artificial ski resort by using the snow spraying equipment according to the present invention, the ice snow 60 accumulated in the ice snow transport space 12s will be absorbed here even if the temperature rises and falls when the ice snow supply pressure feeding is stopped. There is no risk that the ice and snow transport pipe will freeze in the middle of the pipeline by re-freezing after melting.Therefore, when the supply of ice and snow is temporarily stopped and the operation is restarted, the ice and snow is blocked at that part. Therefore, an excessive load is not applied to the pressure feeding device such as the blower 13, and the ice and snow spraying work can always be appropriately repeated.

[Brief description of drawings]

FIG. 1 is a diagram showing an example of an artificial ski resort to which an embodiment of the snow-spreading facility according to the present invention is applied.

FIG. 2 is a partially cutaway perspective view showing an example of a water draining mechanism used in the snow-spraying equipment shown in FIG.

FIG. 3 is a diagram showing a state during ice and snow conveyance in the water removal mechanism portion shown in FIG. 2;

FIG. 4 is a diagram showing a state of the water draining mechanism portion shown in FIG. 2 when ice and snow conveyance is stopped.

FIG. 5 is a schematic diagram showing an example of an artificial snowfall system used in a conventional artificial ski resort.

[Explanation of symbols]

 100: Snow-sprinkling equipment 40: Slope 7: Laying line 7b: Valley (recess) 12: Ice / snow carrier pipe (ice / snow pressure pump) 12s: Ice / snow carrier space 12a: Drainage port (drain hole) ) 1 ... Ice and snow supply pressure feeding means (ice and snow pressure feeding apparatus) 10 ... Ice and snow supply pressure feeding means (ice making apparatus) 15 ... Discharging means (discharge nozzle) 19 ... Lid member (lid) 60 ... Ice and snow

Claims (1)

[Claims] 1. An ice / snow transport pipe installed along a laying line set in a shape corresponding to the undulation of a slope, wherein an ice / snow transport space is formed inside the ice / snow transport pipe. The ice and snow supply pressure-feeding means is connected to the ice-and-snow transport space in a freely-feedable manner to supply ice-snow, and the discharge means is provided in the ice-and-snow transport pipe so as to discharge the ice-snow supplied to the ice-snow transport space. A water drainage port is formed at a position corresponding to the valley of the laying line of the transport pipe so as to communicate with the inside and outside of the ice and snow transport space, and a lid member is attached to the water drainage port to open and close the water drainage port. A snow-sprinkling facility that is installed and configured in a shape.