JP2531100Y2 - Artificial snowfall equipment - Google Patents

Description

[Detailed description of the invention]

[0001]

[Industrial applications] The present invention relates to an environmental test room, a museum,
The present invention relates to an artificial snowfall device for making artificially made snow fall in a broadcasting station, a theater, an amusement park, various event venues, and the like, and particularly to a snowfall device capable of causing large artificial snowfall.

[0002]

2. Description of the Related Art In order for a large number of people to simultaneously watch artificially snow from a distance or to make artificial snow fall at room temperature,
A large grain of snow called so-called botan snow is suitable.

Conventionally, the only way to make large artificial snow fall is to break the ice block into flakes and blow it off with a blower to make the snow fall.

[0004]

[Problems to be solved by the invention] However, in the conventional snowfall method in which ice blocks are crushed into flakes and blown off, artificial snow does not fall down like actual snow and is easily melted.
It was far from the actual snow feel.

[0005] For this reason, there is a drawback that lack of realism is caused when artificial snow falls in a broadcasting station, a theater, an event venue, or the like.

The present invention has been proposed to solve such problems of the prior art, and is an artificial snowfall apparatus capable of causing artificially produced large snowflakes to fall like actual snow. The purpose is to provide.

[0007]

SUMMARY OF THE INVENTION In order to achieve this object, the present invention maintains a low temperature in a snow making room by using a cooler and circulates a low-temperature air flow. A snow trap is installed, and fog is spouted from the fog generator into the snow-making room to grow artificial snow on the snow trap, and the artificial snow removed by the scraper from the snow trap is dropped into the wind path. In a snowfall device that blows artificial snow falling in the wind path to the outside by a blower and causes artificial snow to fall, a timer control unit that intermittently operates the scraping device is provided,
During the rest interval of the scraper that operates intermittently, large artificial snow is grown on the snow trap, and during the operation interval of the scraper, large artificial snow is scraped from the snow trap and snow falls. It is characterized by making it.

In the present invention, a plurality of snow traps are provided with independently operating snow removing devices, and timer control means for operating each of the snow removing devices intermittently is provided. When growing large artificial snow on the snow capturing body during the pause interval and scraping large artificial snow from the snow capturing body during the operation interval of the snow scraping device to make it fall, among a plurality of snow capturing bodies, When the snow removing device of one snow capturing body is in the pause interval, the snow removing device of the other snow capturing body is in the operating interval, and the large artificial snow falls continuously. And

[0009]

According to the configuration corresponding to the first aspect of the present invention, by operating the scraping device intermittently, it is possible to grow large artificial snow on the snow trap and drop it. Artificial snow grown on a snow trap is less soluble than artificial snow made by crushing ice blocks, and a more natural snow feel can be obtained.

According to a second aspect of the present invention, a large number of artificial snow is continuously dropped by combining a plurality of snow traps and alternately operating the snow scraper which operates intermittently. be able to.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A specific embodiment of the artificial snowfall apparatus according to the present invention will be described below in detail with reference to the drawings. FIG. 1 shows an embodiment of the snowfall device.

In this figure, above a wind path 2 formed laterally at a lower portion of the apparatus main body 1 surrounded by a heat insulating wall 1a,
A snowmaking room 3 is provided, and a cooler 5 having a blower fan 4 is installed on a side of the snowmaking room 3. The cooling air blown out from the cooler 5 is supplied to a cool air circulation fan 6.
Circulates in the apparatus main body 1 so that the snow making room 3
It is kept at a low temperature of 5 ° C. or less.

Above the inside of the snowmaking room 3, a breathable snow trap 7 made of cloth or net made of synthetic resin, for example, is provided.
A and 7B are provided. These plural snow traps 7
As shown in FIG. 2, A and 7B are stretched in the vertical direction between upper and lower holding plates 8 and 9, and a snow generating chamber 10 is formed between the snow traps 7A and 7B, respectively. The low-temperature air below the freezing point created by the cooler 5 is sent into these snow generating chambers 10 by the circulation fan 6, and ascends, the snow traps 7A and 7B.
And returns to the cooler 5 to be cooled again and sent out. In the figure, the arrow P indicates the flow of the cooling air.

The upper holding plate 8 is provided with a two-fluid nozzle 12 connected to pipes 11a and 11b into which water and pressurized air are sent from the outside. Fine mist is jetted into the chamber 10. The fog is instantaneously frozen by contacting the low-temperature air in the snow generating chamber 10 and becomes ice crystals of small particles and adheres to the inner surfaces of the snow traps 7A and 7B. In the snow traps 7A and 7B, artificial snow grows from the ice crystals, and a snow layer is formed on the inner surfaces of the snow traps 7A and 7B.

On the outer surfaces of the snow traps 7A and 7B, snow scrapers 14A and 14B, such as rotating brushes driven by a motor, are provided in the width direction. 14B is a snow trap 7A, 7B
The snow layer on the inner surface is swept down into each of the lower wind paths 2 by reciprocating up and down while hitting.

Here, the motors 13A and 13B for driving the snow removing devices 14A and 14B respectively receive the supply of AC power 15 from the terminal IN as shown in FIG.
Switches 16A and 16 connected in series to 3A and 13B
B is intermittently turned on / off by control signals from the timer control circuits 17A and 17B. At this time, control is performed so that one motor 13A is on and the other motor 13B is off. Thereby, the snow scraping device 14
A and 14B are each operated intermittently, and one snow removing device 14B is driven so as to be in the operation interval while the other snow removing device 14B is in the rest interval.

When the snow removing device 14A is in the rest interval, large artificial snow is grown on the snow trap 7A,
When the snow removing device 14A is in the operation interval,
The large artificial snow that has grown on the snow trap 7A is scraped off. The large artificial snow that has grown on the snow trap 7B when the snow removing device 14B is in the rest interval is scraped during the operation interval of the snow removing device 14B. Since the snow removing devices 14A and 14B alternately repeat the rest and the operation, the large artificial snow is continuously scraped off and falls into the wind path 2.

Each of the air passages 2 communicating with the snow generating chamber 10 is provided so as to penetrate the lower part of the apparatus main body 1 in the lateral direction, and a blower 18 and a damper 19 for adjusting the amount of blown air are provided on the air intake 2a side.
Are attached. Further, a damper 20 for adjusting the amount of snowfall and turning on / off the snowfall is attached to the outlet 2b of the air path 2 projecting to the front side of the apparatus body 1. When the dampers 19 and 20 are opened and air is blown into each of the wind paths 2 and 2 by the blower 18, the large artificial snow falling from the snow generating chambers 10 and 10 into the wind paths 2 and 2 is blown off and the outlet 2b Snowfall at room temperature.

If the snow removing devices 14A and 14B are driven while the rest interval and the operation interval are matched, the artificial snow falls intermittently. In this case, a large amount of large artificial snow falls. Can be.

[0020]

According to the present invention, as described above, large-sized artificial snow grown on a snow trap can be dropped by intermittently operating the snow scraper.

The large artificial snow frozen in the snow making room is hard to melt, so that it can be dropped at room temperature.
Since a feeling like actual snow is obtained, unlike a conventional artificial snow made by crushing ice blocks into flakes, it is possible to give a sense of realism in a scene where snow falls.

[Brief description of the drawings]

FIG. 1 is a configuration diagram showing an embodiment of an artificial snowfall device according to the present invention.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is a block diagram showing a drive circuit of the snow removing device.

[Explanation of symbols]

 1 ··· Device body 1a ··· Insulated wall 2 ··· Wind path 2a ··· Air intake 2b ··· Outlet 3 ··· Snowmaking room 5 ··· Cooling ····································· Cold-air circulation fan 7A, 7B ························································································································ Two Fluid nozzle 13A, 13B ... Motor 14A, 14B ... Snow scraper 15 ... AC power supply 16A, 16B ... Switch 17A, 17B ... Timer control circuit 18 ...・ Blowers 19, 20 ・ ・ ・ ・ Damper

Claims (2)

(57) [Scope of request for utility model registration] 1. A snow trap which is made of a permeable material is installed in a snow-making room in which a low-temperature air flow is circulated by maintaining a low temperature in the snow-making room with a cooler. In the artificial snowfall device in which the artificial snow grows on the snow capturing body by blowing out fog from the snow collecting body, and the artificial snow grown on the snow capturing body is wiped off by the snow removing device and the snow falls, the snow removing device is intermittent. Timer control means for activating the snow collecting device during the sleep interval of the snow removing device to grow large artificial snow on the snow capturing device, and during the operation interval of the snow removing device, remove large snow particles from the snow capturing device. An artificial snowfall device characterized by scraping artificial snow to cause snowfall. 2. A snow trap which is made of a permeable material is installed in the snow-making room in which a low-temperature air flow is circulated by maintaining a low temperature in the snow-making room with a cooler. In the artificial snowfall device that blows out fog from the snow trap and grows artificial snow on the snow trap, and the artificial snow grown on the snow trap is wiped off by the snow scraping device to fall snow Providing timer control means for intermittently operating each of the snow scrapers provided independently, and providing a large artificial snow on the snow trap during the pause interval of the snow scraper. When scraping large artificial snow from the snow trap during the operation interval of the snow trap and causing the snow to fall, the snow trap of one of the plurality of snow traps is in the pause interval. Sometimes the other snow trap An artificial snowfall device characterized in that the snow removal device of (1) is in the operation interval to continuously make large-sized artificial snowfall fall.