JPS63140269A - Artificial snowfall and snow moistening device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to an artificial snow making device capable of turning snow obtained by an artificial snow making device into wet snow for use in snow accretion experiments.

2. Prior Art As a conventional artificial snow-making device, for example, Japanese Patent Application Laid-Open No. 113-1983
Publication No. 5566/Kai can be mentioned.

To explain this based on FIG. 2, there is an upright cooling tower 4, and a snow chamber l connected to the bottom of the cooling tower 4, with an opening 3 in the ceiling closed by the cooling tower 4. and,
a first cooling device 9 that cools the air in the cooling tower 4; and a bottom opening installed in the cooling tower 4 so as to extend in its length direction and connected to the opening 3 of the snow-making chamber 1. an inner cylinder 12 having
3, a humidifier 15 that supplies water vapor to the inside of the inner cylinder 12 near the lower end of the inner cylinder 12, and a humidifier 15 that supplies water vapor to the inside of the inner cylinder near the humidifier 15. It consists of a snow seed supply device that supplies snow seeds.

Furthermore, there has not been a wet snow making device that turns snow obtained by an artificial snow making device into wet snow.

Problems to be Solved by the Invention For example, power transmission lines are subject to twisting effects due to snowfall during winter, causing problems such as breakage, but this snowfall occurs when the snowfall is wet. .

This snow accretion experiment was conducted during winter snowfall, but wet snow is not always available during snowfall; for example, in Hokkaido, wet snow only occurs once a winter. For this reason, snow accretion experiments involve loosening the outdoor snow mass with a sieve, turning it into powder, spraying it with OoC's water-saving solution to wet it, and colliding it with a sample (electrical wire) in a wind tunnel to deposit snow. I went there.

However, although natural snow is used in the above-mentioned snow accretion experiments, its properties are completely different from wet snow that falls during natural snow accretion phenomena. There were problems such as not being able to do the following.

Therefore, there is a strong need for the development of an artificial snow-wetting device that can obtain wet snow with properties similar to wet snow that falls during natural snow-accumulation phenomena, and that can immediately use the wet snow for snow-accumulation experiments. It was rare.

Furthermore, the snow produced by the conventional artificial snow-making device has the same crystals as snow produced in the natural world, but this snow has
Since the snow is produced at a low temperature of approximately -5°C to -15°C, its moisture content is low.

Even if natural snowfall occurs in the sky, the temperature at the ground surface is 0°C.
If it is less than 2, it will be wet snow. Therefore, by increasing the temperature of snow that is generated and falling in the manual snow-making device, it is possible to turn the snow into wet snow.

However, when the temperature of the snow chamber (test chamber) provided below is raised in order to produce wet snow in the above device, the air in the snow chamber rises due to convection, and the negative temperature air inside the inner cylinder 12 falls. As a result, there was a problem in that crystals that had not yet grown into snow fell down and could not be turned into wet snow.

For this reason, there has been a strong desire to develop an artificial snow making device that can turn snow obtained by an artificial snow making device into wet snow for use in snow deposition experiments.

Summary of the Invention The present invention has been made to meet the above requirements.1
An air blower and a temperature/humidity control device are installed in the upright inner cylinder that grows snow in the artificial snowmaking device to prevent convection between the upper air and warm and humid air within the inner cylinder, and to dampen the snow falling inside the inner cylinder. The purpose of the present invention is to provide a snow-wetting device for people who can perform snow-covering experiments at any time throughout the year.

Means for Solving the Problems The present invention employs the means described below in order to solve the above problems.

The upright inner cylinder 30 is provided with a cloud forming device 31 and a seeding device 32, and an air flow rate adjusting air pipe 33 for adjusting the flow rate of the internal air is provided to cool the inner cylinder 30. In a large-r snowmaking device in which a cooling device 35 is provided in an outer tank 34, a blower device 37 and a temperature/humidity control device are installed below an air outlet 36 of an air flow velocity adjusting air duct 33 in an upright inner cylinder 30 for growing snow. A device 38 is provided, air is taken in by the blower device 37, the temperature is adjusted to be equal to the internal air temperature, and the air is sent into the inner cylinder as a downward airflow, and the air is taken in by the temperature and humidity control device 38, and the air is taken in by the temperature/humidity control device 38. 3
8 Adjust the temperature and humidity to be moderately higher than the temperature and humidity of the upper air and send it into the inner cylinder as a five-directional airflow, preventing the convection between the upper air and the warm and humid air inside the inner cylinder. It is characterized by turning falling snow into wet snow.

Function The temperature/humidity control device 38 of the present invention has the above-mentioned configuration, and has the function of converting snowfall into wet snow. The temperature and humidity are adjusted to be moderately higher than the temperature and humidity, and the temperature and humidity are discharged into the inner cylinder from the temperature and humidity control device 38. The temperature and humidity supplied here is controlled by a temperature and humidity controller 54, and the supply amount is adjusted by a rotation speed rough-angle rotation controller 53 of the motor 52 of the blower fan 41 to supply an appropriate amount.

When hot and humid air is fed into the inner cylinder by the above-mentioned means, the air rises due to the convection phenomenon.

In order to prevent this, a blower device 37 is installed on three sides of the temperature/humidity control device 38 to blow air downward into the interior, thereby suppressing the convection phenomenon of the hot and humid air supplied from the temperature/humidity control device 38. have. - That is, the air blown into the inner cylinder is blown by the blower fan 3.
9, and the heater 40 adjusts the temperature to be equal to the snow formation temperature at that time (for example, -15°C) and supplies the snow.

The speed of the blowing air at this time is determined by adjusting the rotation speed of the motor 50 of the blowing fan 39 using the fan rotation controller 51.

In this case, the speed of the blowing air is adjusted to a speed that opposes the upper airflow for snow formation and the convection due to the supplied temperature and humidity for moistening and snow formation.

Thus, the convection between the air above the blower 37 in the inner cylinder 30 and the warm and humid air is prevented, and the snow falling inside the inner cylinder 30 is turned into wet snow. This wet snow is taken into the test chamber 55 and subjected to snow accretion experiments, and, for example, the I1 snow accretion prevention method for solving the snow accretion phenomenon on power transmission lines, the development of coating materials, etc. are carried out.

Embodiment An embodiment of the present invention will now be described in detail with reference to FIG.

First, the artificial snow-wetting and snow-making device is constructed as follows.

The inner cylinder 30 that stands upright above the opening 56 of the test chamber 55 is surrounded by an outer tank 34, and the air inside this outer tank 34 is circulated by a circulation fan 58 of a control chamber 57 of the cooling device 35. The temperature is controlled by a cooler 59 and a heater 60.

The air inside the inner cylinder 30 is caused to wave five times by the blower 61 from above the inner cylinder 30 through the air flow rate adjusting air path pipe 33, and the air inside the inner cylinder is given a -1-rising air flow.

The temperature inside the inner cylinder 30 is the temperature of the air inside the outer tank 34 on its outer periphery by 3I! ! i, and the temperature is approximately -5°C to -20°C.

Inside the inner cylinder 30 is a cloud formation! 131 is connected to supply clouds (water vapor) into the inner cylinder.

Further, a seeding device 7I32 is connected within the inner cylinder 30 to supply seeds, which are the core of snow formation, into the inner cylinder.

The inner cylinder 30 is cooled to, for example, -15°C by the device.
Within, snow is generated by clouds and seeds. If the updraft is slowed down, fine snow will fall, and if the updraft is made faster, the snow will grow large enough to be picked up by the updraft and dropped.

In the above-mentioned snow-making device that artificially generates snow, a blower device is installed below the air outlet 36 of the air flow rate adjusting air pipe 33 that adjusts the internal air flow rate of the upright inner cylinder 30 for growing snow. 137 is provided, and the blower device 37
For example, cooling air around the outer periphery of the inner cylinder is sucked in by the blower fan 39.

The air is adjusted to the same speed as the internal air flow rate by the heater 40 and sent to the air blowing guide 47, and the air is blown into the inner cylinder through a plurality of air blowing holes 43 made in the inner cylinder 30 yen 161 therein.
An airflow direction plate 45 provided inside directs airflow in the downward direction.

The speed of the blowing air is adjusted by adjusting the rotation speed of the motor 50 of the blowing fan 39 using the fan rotation controller 51. In this case, the blowing air speed is adjusted to a speed that opposes the rising air current for snow formation and the convection due to the supply temperature and humidity for moistening the snow.

Further, temperature control of the heater 40 is performed by a temperature controller 49 in the FA mode.

The blower device 37 is disposed above the temperature and humidity control device 38, and has the effect of suppressing the convection phenomenon of the warm and humid air supplied from the temperature and humidity control device 38 by blowing air downward into the inner cylinder. are doing.

1i; A temperature/humidity control device 38 is provided below the blower device 37, and a blower fan 41 sucks cooling air from the outer circumference of the inner cylinder 30, for example, and controls the temperature/humidity supply device 4.
The temperature and humidity are adjusted by 2, and the air is sent to the Q humidity control body 48, and the air is blown into the inner cylinder through a plurality of ventilation holes 44 bored around the circumference of the inner cylinder 30. The greenhouse air flows downward by the air blow direction plate 46.

The temperature and humidity supplied here are controlled by a temperature and humidity controller 54, and the rotation speed of the motor 52 of the blower fan 41 is adjusted by a fan rotation controller 53.
An appropriate amount is delivered.

Although the temperature and humidity control body 48 of the temperature and humidity control device 2138 in the embodiment has the ventilation holes 44 and the ventilation direction plate 46 provided at a plurality of locations, the present invention is not limited to this, and the required amount of hot and humid air can be secured. Bye.

In Figure 1, 62 is a fan motor that rotates the circulation fan 58 of the cooling device 35, and 63 is a cooling device installed in the test chamber 55, which includes a control room 64, a cooler 65, a heater 66, a circulation fan 67, and a fan motor. It has 68.

Effects of the Invention The present invention is constructed as described above, and the upright inner cylinder for growing snow in the artificial snow-making device is provided with a temperature and humidity control device, which is called a ventilation bag. Convection between the three-way air and the greenhouse air is blocked, and the snow that falls inside the inner cylinder is turned into a humid state and introduced into the test chamber, allowing snow accretion experiments to be carried out at any time throughout the year. .

In addition, since the wet snow made into wet snow according to the present invention has the same properties as wet snow that falls in nature, there is a correlation with natural snowfall, and it is possible to conduct accurate snowfall experiments. It is.

As a result, the problem of snow accretion on power transmission lines has been resolved. The present invention can greatly contribute to the development of snow accretion prevention methods, coating materials, etc. At the same time, it is used not only for snow accumulation experiments on power transmission lines, but also for snow accumulation on roofing materials, aircraft, automobiles, etc., and snow damage.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional front view of the present invention, and FIG. 2 is a partially cutaway slope view of a conventional artificial snow-making device. 30... Inner cylinder 31... Cloud forming device 32
... Seeding device 33 ... Air flow rate adjustment air pipe 34 ... Outer tank 35 ... Cooling device 36
...Air outlet 37...Blower device 38...Temperature and humidity control device 39...
...Blower fan 40...Heater 41...Blower fan 42...Temperature and humidity supply device 43.44...Blower hole 45.46... ...Blow direction plate 47 ...Blow guide 48 ...Temperature and humidity control body 49 ...
・Temperature controller 50...Motor 51...Fan rotation controller 52...
··motor

Claims (8)

[Claims] (1) Cloud-forming device (31) directly connected to the upright inner cylinder (30)
) and a seeding device (32), and an air flow rate adjusting air pipe (33) for adjusting the flow rate of the air in the inner cylinder,
A cooling device (
35), an air flow velocity adjusting air pipe (33) of an upright inner cylinder (30) for growing snow;
) A blower device (37) and a temperature/humidity control device (38) are provided below the air outlet (36), and the blower device (37) takes in air and adjusts it to the same temperature as the air inside the inner cylinder. Air is sent into the inner cylinder as a downward air current, taken in by a temperature/humidity control device (38), adjusted to a temperature and humidity that is moderately higher than the air temperature and humidity above the device (38), and then lowered into the inner cylinder. An artificial snow-wetting device characterized in that snow falling in an inner cylinder is turned into wet snow by introducing directional airflow and preventing convection between air above the inner cylinder and warm and humid air. (2) The artificial snow-wetting and snow-making device according to claim 1, characterized in that an air blowing guide (47) and a temperature/humidity control body (48) are provided so as to surround the outer periphery of the inner cylinder. (3) Cooling air around the outer periphery of the inner cylinder is sucked in by the blower fan (39), adjusted to the same temperature as the air inside the inner cylinder by the heater (40), and then sent into the inner cylinder via the blower guide (47). An artificial snow-wetting device according to claim 1, characterized in that: (4) The blower fan (41) sucks the cooling air around the outer periphery of the inner cylinder, and the temperature and humidity supply device (42) uses the temperature and humidity control body (4
8) The artificial body according to claim 1, wherein the temperature and humidity are adjusted to be moderately higher than the temperature and humidity of the upper air, and the artificial air is fed into the inner cylinder via the temperature and humidity control body (48). Snow-wetting device. (5) Air blower (37) and temperature/humidity control device (3)
8) through multiple ventilation holes (4) provided around the inner cylinder.
3) and (44), the artificial snow-wetting device according to claim 1. (6) Air flow direction plates (45) and (46) are provided in the inner cylinder to direct the flow of air from the air blower (37) and temperature/humidity control device (38) downward. An artificial snow-wetting and snow-making device according to claim 1. (7) The blower device (37) includes a heater (40), a temperature controller (49), a blower fan (39), and a motor (50).
, fan rotation controller (51), ventilation guide (47)
), an air blowing hole (43), and an air blowing direction plate (45). (8) Connect the temperature and humidity control device (38) to the blower fan (
41), motor (52), fan rotation controller (5
3), temperature and humidity supply device (42), temperature and humidity controller (5)
4), temperature and humidity control body (48), ventilation hole (44)
The artificial snow-wetting device according to claim 1, characterized in that the device comprises: and a blow direction plate (46).