JPH0988030A - Snow thawing device by rotary sprinkling water - Google Patents

Abstract

PROBLEM TO BE SOLVED: To collect snow in a place and sprinkle water on the piled snow to effectively thaw snow with a small quantity of water as much as possible. SOLUTION: A sprinkling water pipe 4 spraying water downward like a curtain is horizontally arranged, in a device thawing the piled snow with spraying water. The pipe is rotatably supported to a vertical support shaft 1 and driven by a geared motor M. The rotary speed of the pipe 4 driven by the geared motor M is controlled by an inverter controller 10. The sprinkling water pipe 4 is connected to a natural hot water source through a pressurizing pump P.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a snow melting apparatus for accumulating a large amount of snow, sprinkling water on the snow, and melting the snow collectively, and to melt snow as efficiently as possible with a small amount of water spray. Is something that can be done.

[0002]

2. Description of the Related Art In areas with a large amount of snowfall, large open roof parking lots and public plazas are pumped and sprinkled with groundwater in order to improve its usability so that snow does not accumulate. ing. However, such snow removal requires a large amount of water, but it is not preferable to pump a large amount of groundwater for a long time. In addition, in a plaza not equipped with such a snow removal device, there was no choice but to wait for the accumulated snow to accumulate in one place and to naturally melt it. In order to positively melt the piled snow, it is considered that water is intensively sprinkled on the snow to promote the snow melt.
In this snow melting device using concentrated water spray, it is required to melt snow piled up as efficiently as possible with a small amount of water spray.

[0003]

DISCLOSURE OF THE INVENTION The present invention is designed to melt snow by accumulating snow in one place and sprinkling water on the snow in one place. The problem is to devise the watering method and device so that the snow can be melted efficiently.

[0004]

[Means for Solving the Problems] The measures taken for solving the above problems are constituted by the following elements (a) to (c). (A) A water spray pipe that sprays downward in a curtain shape is arranged horizontally, and this is supported by a vertical support shaft so that it can rotate freely.
(B) The water spray pipe was driven by a geared motor, and the swirling speed of the water spray pipe by the geared motor was controlled by an inverter control device. (C) The water spray pipe was connected to a natural hot water source via a pressurizing pump. .

[0005]

[Operation] The sprinkler pipe is driven by a geared motor and slowly swirls around the vertical axis while sprinkling natural hot water downward in a curtain shape. Since the natural hot water is pressurized by the pressure pump, curtain-like water spray is vigorously sprayed on the surface of the pile of snow. Due to the impact of the water spray, the surface of the snow clumps piled up is shattered into small pieces, and the contact area with the sprinkled natural hot water is dramatically increased. Therefore, the snow melting effect due to the thermal energy possessed by the natural hot water is significantly increased. Therefore, the surface of the pile of snow is melted by both the crushing action by the impact of water spraying and the snow melting action by the thermal energy of the natural hot water, so the consumption of natural hot water does not increase. The snow melting process is extremely efficient. And, the surface melted by curtain-shaped water spray is a belt-like surface at a certain moment, but since the water spray pipe slowly swirls on the pile of snow, all surfaces of the snow chunk are covered. A curtain-like water spray is repeatedly sprayed on the snow, and the entire surface of the water is melted almost uniformly. Moreover, the quality of the snow piled up varies, and for example, some of them are frozen. The surface of any snow quality can be crushed into small pieces by adjusting the swirling speed of the sprinkling pipe. That is, when the pile of snow is hard, the sprinkler pipe may be swung slowly, and when the snow is not hard, the swirling speed is increased to further improve the snow melting efficiency.
Since the snow melting efficiency is promoted by the crushing action of water spray on the surface of a pile of snow piled up and the snow melting action of the heat energy of the water spray, by adjusting the swirling speed of the water spray pipe by the inverter controller, The balance of these two actions can be adjusted most reasonably according to the snow quality. By changing the water spray pressure, the crushing effect of water spray on the surface of the pile of snow can be adjusted.Therefore, the crushing effect can be adjusted by adjusting the water spray pressure along with the swirling speed of the water spray pipe. You can also do it. Therefore, when the water spray pressure is variable, the variable range of the swirling speed of the water spray pipe can be reduced. The snow melting capacity of the snow melting device depends on the temperature of hot water supplied from the natural hot water source and the amount of water sprayed. Therefore, it is desirable to use groundwater having a water temperature of 10 ° C. or higher as a hot water source. Since this is a natural hot water source that can be secured in any area, it is easy to select the installation location of this facility. Furthermore, since the heat source for efficiently melting snow is a natural hot water source, its operating cost is extremely low,
The construction cost of this snow melting device is relatively low because it consists mainly of a pressure pump, a drive device with a geared motor for turning a horizontal sprinkler pipe, and an inverter control device of the drive device. Is.
It should be noted that the swirling range of the sprinkler pipe is arbitrary in the range of 90 to 360 °, but in the case of 180 °, for example, the swirling motion of the sprinkler pipe is a reciprocating swirl motion. Regardless of whether the turning range is wide or narrow, the turning speed may be selected within a range of 1 to 10 rpm in consideration of snow quality, natural hot water temperature, and the like.

[0006]

[Embodiment] Next, an embodiment will be described with reference to the drawings. The most desirable natural hot water source is deep groundwater, and in order to make the most effective use of deep groundwater and deep ground heat, and to avoid the problem of ground subsidence due to the pumping of a large amount of groundwater, reflux-type geothermal It is preferable to use a reduction well. A swirl water supply pipe 2 is rotatably supported on the upper end of the vertical support shaft 1, and one end of a water sprinkling pipe 4 is connected to the swirl water supply pipe 2 by a pipe joint 3. An upper end of the swirling water supply pipe 2 is closed, and a geared motor M is connected to the upper end via a shaft coupling 5. The geared motor M is fixed to the vertical support shaft 1 by a bracket 6. Sprinkler pipe 4
A large number of nozzles are arranged on the lower surface of the nozzle, and water is sprayed downward from this nozzle in a curtain shape. The sprinkler pipe 4 has a total length of 5, 5 m and a pipe diameter of 75 mm. The maximum height h of snow piled up is 4 m, and the height H of this sprinkler pipe is 4,
It's 5m. The lower end of the swirling water supply pipe 2 is connected to a water supply pipe 7 arranged at the center of the vertical shaft via a swiveling pipe joint 8, and this water supply pipe 7 is directly connected to a pressurizing pump P or an intake pump via a valve 7a. It is connected. The pressurizing pump P is connected to the deep well 9. The water spray pipe 4 has a turning angle θ of 180 degrees and is turned back and forth to the left and right, and the turning speed is appropriately adjusted by the inverter control device 10. A sprinkling nozzle 12 is provided on the floor surface 11 sprinkled by the sprinkling pipe 4.
Are arranged in a semi-circle and water is sprinkled on the floor. A water discharge pipe 13 for draining water from the water spray pipe 4, water spray from a water spray nozzle 12 on the floor, and snowmelt water is disposed on the floor 11. The sprinkler pipe 4 is a geared motor M centered on the vertical shaft 1.
While slowly reciprocating left and right, the curtain-shaped sprinkling water S is strongly sprayed onto the surface of the pile of snow G. The surface on which the water sprinkling S is sprayed at a certain moment is a band-shaped surface, but the band-shaped water sprinkling surface moves at the same speed as the swirling speed of the water sprinkling pipe to crush the surface of the snow lump G.
The crushed snow is melted by the thermal energy of the water spray and flows down along the surface of the snow lump. By repeating this operation at regular intervals, the snow lumps are quickly melted and processed. The swirling speed of the sprinkling pipe is controlled steplessly by the inverter control device, and is appropriately adjusted in consideration of snow quality, snow temperature, sprinkling temperature, and the like. When the natural hot water from the deep well 9 is operated at a temperature of 10 ° C., the pressure of the pressurized water is 1 kg / cm ² , and the amount of water sprayed from the sprinkler pipe 4 is 0.5 t / min, normal snow is generated at 100 t / day by the snow melting device. 200 m
³ / day (with specific gravity of snow 0.5)] Can be processed. If the basic design of the facility is made with this as an approximate standard, a snow melting device that is practically effective can be realized.

[0007]

[Effects] As described above, according to the present invention, the surface of snow clumps piled up by sprinkling is crushed by the impact of water sprinkling, and the contact area between the sprinkled water and snow is dramatically expanded to heat the natural hot water. Since the snow melting effect by energy is remarkably improved, both the crushing action and the snow melting action by the thermal energy possessed by the natural hot water can quickly melt the pile of snow piled up most efficiently. Therefore, without increasing the sprinkling volume of a small amount of natural hot water,
A lot of snow can be treated efficiently. Also, the hardness of the surface of the piled snow varies depending on the snow quality, snow temperature, etc., but by adjusting the swirling speed of the sprinkler pipe with the inverter control device, the most efficient way can be achieved regardless of snow quality and snow temperature. It can melt snow. 1 of a pile of snow
Concentrate water in a curtain shape at each location, continue watering at that location until the area is completely melted, and when snowmelt at that location is completed, swirl the sprinkling pipe a little and concentrate at the next location. Water can be sprinkled in a pile to melt snow piles. This method also crushes the surface of a pile of snow clumps into small pieces by water sprinkling, while melting the snow with the thermal energy of the water sprinkling, but the snow and water crushed on the surface of the snow clumps to be sprinkled Since a mixed layer is formed and spraying water is sprayed on this mixed layer, the effect of crushing the surface of the snow lump by spraying is small, and since the sprinkled warm water flows out on the surface of this mixed layer, The heat exchange with the crushed snow is not sufficient, and therefore the snow melting effect due to the stored thermal energy is drastically reduced. According to the present invention, about 10 times the snow melting effect can be obtained as compared with this snow melting method. In other words, about the same amount of snow can be treated by about 1/10 of the natural hot water, and when sprinkling the same amount of natural warm water, it can be treated at 10 times the processing speed. In addition, the present invention can exhibit a snow melting efficiency of about 20 times as compared with the case of showering water on the whole pile of snow.

[Brief description of drawings]

FIG. 1 is a side view of an embodiment.

FIG. 2 is a plan view.

[Explanation of symbols]

 1 ... Vertical support shaft 2 ... Swivel water supply pipe 3 ... Pipe joint 4 ... Sprinkler pipe 5 ... Shaft joint 6 ... Bracket 7 ... Water supply pipe 7a ... Valve 8. ･ ･ Swirl pipe joint 9 ・ ・ ・ Deep well 10 ・ ・ ・ Inverter control device 11 ・ ・ ・ Floor surface 12 ・ ・ ・ Sprinkling nozzle 13 ・ ・ ・ Distribution pipe M ・ ・ ・ Geared motor P ・ ・ ・ Pressure pump S ... Curtain-like watering G ... Snow mass

Claims (1)

[Claims] 1. A snow-melting device that collects snow in one place and sprays water on it to melt the water and spray water on the snow-melting device. , This is supported by a vertical shaft so that it can be swung freely, the sprinkling pipe is driven by a geared motor, the swirling speed of the sprinkling pipe by the geared motor is controlled by an inverter controller, and the sprinkling pipe is naturally driven by a pressurizing pump. A snow-melting device by turning water sprinkling connected to a hot water source.