JP2002047626A - Snow melting system of road - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a snow melting system of a road for storing rainwater under the ground by raising a temperature of the rainwater by effectively using radiation heat of a road surface in the snow unfalling season and melting a snowfall of the road in the snow falling season by this raiwater. SOLUTION: This snow melting system has a heat accumulating water storage tank 4 arranged under the ground near the road, water supply piping 5 for supplying and making water stored in this heat accumulating water storage tank 4 to blow to a pavement surface 11 of the road 1 and recovering piping 6 for recovering the water made to flow to the pavement surface of this road to the heat accumulating water storage tank 4, and is constituted such that the water stored in the heat accumulating water storage tank 4 is made to flow to the pavement surface 11 of the road 1 heated by solar radiation heat via the water supply piping 5 in the snow unfalling season to be accumulated in the heat accumulating water storage tank 4 and the surrounding ground by repeating operation for recovering the water depriving heat of this pavement surface 11 to the heat accumulating water storage tank 4 via the recovering piping 6, the warm water in the heat accumulated heat accumulating water storage tank is made to flow to the pavement surface 11 of the road 1 via the water supply piping 5 in the snow falling season to melt snow fallen on the pavement surface 11.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a road snow melting system.

[0002]

2. Description of the Related Art In a snowy country, groundwater whose water temperature is substantially constant throughout the year is pumped up and drained on the road to melt snow accumulated on the road.

[0003]

However, if a large amount of groundwater is pumped, the ground may be subsided due to a decrease in the groundwater. Therefore, there is a need for the development of a snow melting system for roads that does not use groundwater. At present, such a snow melting system has not been developed.

The present invention has been made to cope with such a situation, and an object of the present invention is to raise the temperature of water other than groundwater such as rainwater in a season when snow does not fall by effectively utilizing radiant heat on the road surface. Another object of the present invention is to provide a road snow melting system that can store snow under the ground and efficiently melt the snow on the road in the snowy season.

[0005]

In order to achieve the above object, a road snow melting system according to claim 1 of the present invention comprises: a heat storage water tank provided underground near a road; It is equipped with a water supply pipe that supplies stored water to the pavement surface of the road and flows it, and a recovery pipe that collects the water that has flowed on the pavement surface of the road into the heat storage tank.
The operation of flowing the water stored in the heat storage water tank through the water supply pipe to the pavement surface of the road heated by the radiant heat of the sun and collecting the water from which heat is taken from the pavement surface into the heat storage water tank through the collection pipe is repeated. In this way, heat is stored in the heat storage tank and the surrounding ground, and in the snowy season, the warm water in the stored heat storage tank flows through the water supply pipe to the pavement surface of the road, so that It is characterized by melting the accumulated snow.

When water stored in an underground heat storage tank is allowed to flow on a pavement surface of a road in a season when snow does not fall as in this snow melting system, the pavement surface is exposed to radiant heat in the middle of summer due to radiant heat.
Since the water is heated to a high temperature of 70 ° C., the water takes a large amount of heat from the pavement surface and is collected in an underground heat storage tank. By repeating this operation, a large amount of heat is transferred to the heat storage tank and the surrounding area. Will be stored underground. Therefore, even in the snowy winter season, this large amount of heat storage keeps the water in the heat storage tank at a temperature equal to or higher than that of groundwater. We can melt snow well. The water temperature varies depending on the amount of water collected and the weather of the year.

Further, when water stored in an underground heat storage tank is flowed on a pavement surface of a road in the middle of summer, part of the water evaporates due to the heat of the pavement surface. There is also the advantage of being softened.

[0010] Next, a snow melting system for a road according to a second aspect of the present invention is the snow melting system according to the first aspect, wherein the water stored in the heat storage water storage tank is pumped through a water supply pipe to increase the height of the pavement surface of the road. The water is supplied to the pavement and flows down on the pavement surface, and the water flowing on the pavement surface is collected from a lower part of the road through a collection pipe into a heat storage tank.

When the water in the heat storage water storage tank is supplied to a high position on the pavement surface of the road and flows naturally on the pavement surface as in the snow melting system, the water flows substantially over the entire pavement surface. Therefore, the heat absorption efficiency by water is improved, and a large amount of heat can be stored in the heat storage tank and the surrounding ground. Then, the warm water in the heat storage water storage tank in which the heat is stored also flows over the entire pavement surface, so that the water can efficiently and uniformly melt snow.

Next, a snow melting system for a road according to a third aspect of the present invention is the snow melting system according to the first aspect, wherein the heat storage water storage tank is provided underground in a children's park, a park, a parking lot, a school, etc. near the road. It is characterized by being provided in.

In such a snow melting system, a children's park,
A large-capacity heat storage tank can be installed underground by effectively using large spaces such as parks, parking lots, and schools.

According to a fourth aspect of the present invention, there is provided a road snow melting system according to the first aspect, wherein the heat storage tank is a concrete tank, and a heat insulating material covering an opening of the heat storage tank. Is characterized by the fact that the peripheral edge portion protrudes outside the heat storage water tank.

When the heat storage water storage tank is a concrete tank as in this snow melting system, a large amount of heat is stored in the body,
In addition, when the peripheral portion of the heat insulating material protrudes outside the heat storage water tank, heat is prevented from being released from the side wall of the heat storage water tank to the surface of the ground, and heat is stored in the surrounding ground, so that heat storage efficiency is improved.
The amount of stored heat increases.

Next, a snow melting system for a road according to a fifth aspect of the present invention, in the snow melting system according to the second aspect, removes solid matter such as mud, sand, and dust in the middle of the water collecting pipe. It is characterized by providing a solids removal facility.

[0015] In such a snow melting system, rainwater collected from the road into the underground heat storage tank through the water collecting pipe or water returned to the heat storage tank through the water collecting pipe by removing heat from the pavement surface is removed. Even if solid matter such as sand, dust, etc. is contained, most of the solid matter is removed when passing through the removal equipment, so that less solid matter is deposited on the bottom of the heat storage tank. Therefore, since it is not necessary to frequently clean the heat storage water storage tank, maintenance is easy.

[0016]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, specific embodiments of the present invention will be described in detail with reference to the drawings.

FIG. 1 is an explanatory view of a snow melting system for a road according to an embodiment of the present invention, FIG. 2 is a cross-sectional view of a heat storage tank of the snow melting system, and FIG. FIG. 4 is a perspective view, FIG. 4 is a cross-sectional view of a road for explaining a water supply pipe of the snow melting system, FIG. 5 is a cross-sectional view of a road for explaining a water collecting pipe of the snow melting system, and FIG. FIG. 3 is a cross-sectional view of the solid matter removing device.

The snow melting system for roads illustrated in FIG. 1 has a heat storage tank 4 for storing rainwater under the park 2 and the parking lot 3 facing the road 1 and the rainwater stored in the heat storage tank 4. A water supply pipe 5 for supplying and flowing water to the pavement surface of the road 1 and a collection pipe 6 for collecting rainwater flowing on the pavement surface of the road 1 into the heat storage water storage tank 4 are provided. The solid matter removing equipment 7 is provided at a location (close to the heat storage water storage tank 4). In this snow melting system, rainwater is stored and used as described above, but it goes without saying that water other than groundwater such as tap water may be used.

The heat storage tank 4 is a large-capacity concrete tank. As shown in FIG. 2, in the heat storage tank 4, a large number of fillers 41 are arranged vertically and horizontally and stacked vertically. Has been filled. The upper end of the heat storage tank 4 is covered with a heat insulating material 42, and the upper surface of the heat insulating material 42 is covered with a pavement material such as soil or asphalt.

As shown in FIGS. 2 and 3, the filler 41 comprises a square frame 41a and a short column 41b formed of a synthetic resin such as polypropylene.
At the four corners, the center and the middle of the four sides of 1a, a pillar 41b is provided.
A total of nine fitting holes 41c are formed so that the upper end of each column 41b is fitted and fixed from below in each fitting hole 41c to form one filler 41. I have.

The column 41 of the filling material 41 is a lightweight hollow pipe, and a node 41d is formed at an upper portion and a lower portion thereof. Therefore, when this column 41b is fitted into the fitting hole 41c of the frame 41a, the node 41d is fitted into the fitting hole 41c.
It can be seen whether they are completely and evenly fitted. The frame 41a is formed with several large openings 41e in order to reduce the weight and save the material, and the frame 41a is connected to the front, rear, left and right by a connector (not shown). It has become.

Although the size of the filler 41 is not particularly limited, in consideration of strength, handleability, molding cost, etc., for example, the length of one side of the frame 41a is about 50 cm,
It is preferable to set the height of 1b to about 25 cm.

The above-mentioned heat storage water storage tank 4 in which the fillers 41 are connected side by side in the front-rear and left-right directions and stacked up and down several levels to fill the tank is used for the water storage where the space between the columns 41b of the fillers 41 is continuous. The water storage space occupies about 95% of the total volume of the heat storage water storage tank 4. Therefore, this heat storage water storage tank 4 has a large water storage capacity despite the fact that many fillers 41 are filled in the tank.

The heat storage water storage tank 4 itself is preferably constructed of concrete as described above, and since such a concrete heat storage water storage tank 4 can store a large amount of heat in the body, the snow melting system of the present invention is used. Is perfect for

In order to increase the heat storage efficiency by increasing the heat storage efficiency of the heat storage water storage tank 4, it is necessary to cover the upper end opening of the heat storage water storage tank 4 with the heat insulating material 42 as described above to suppress heat radiation to the ground surface. . As the heat insulating material 42, a foam plate for civil engineering such as a highly rigid styrofoam plate (EPS) having uniform and fine closed cells is used.
Styrofoam plates having a thickness of about 30 cm are preferably used.

As shown in FIG. 2, the heat insulating material 42 preferably has such a size that its peripheral portion protrudes about 1 to 2 m to the outside of the heat storage water tank 4, and the peripheral portion protrudes such a large heat insulating material 42. When the heat storage water storage tank 4 is put on the upper end opening as described above, heat is prevented from being released from the side wall of the heat storage water storage tank 4 to the surface of the ground and is stored in the surrounding ground, so that the heat storage efficiency is further improved and the heat storage amount is increased. There are advantages to

Since the heat insulating material 42 is supported from below by the filling material 41 filled in the heat storage water storage tank 4, there is no fear that the heat insulating material 42 will be broken even when a large load is applied to, for example, an automobile. Further, it is preferable to provide a heat insulating material around the water supply pipe 5 and the recovery pipe 6 so that the stored heat energy is not released.

It is preferable that the above-mentioned heat storage water storage tank 4 is provided underground by effectively using a large space such as a children's park, a park, a parking lot, or a school near a road. It is not appropriate to provide the heat storage tank 4 at a location away from the road because the energy loss between the road 1 and the heat storage tank 4 increases.

The water supply pipe 5 is a pipe that supplies the rainwater stored in the heat storage water storage tank 4 to the pavement surface of the road 1 and flows the rainwater.
As shown in FIG. 4, the water supply pipe 5 is buried along the highest center portion of the pavement surface 11 of the road 1 having a flow gradient to both sides, and its tip is closed. A large number of water discharge holes 51 are formed at intervals of several cm to several tens of cm along the upper end ridge line of the water supply pipe 5, and these water discharge holes 51 are exposed at the center of the pavement surface 11. ing.

On the other hand, the collection pipe 6 is connected to the pavement surface 1 of the road 1.
The rainwater that has flowed into the lower part of the road 1
2 and 5, which are buried from the side grooves 12, 12 on both sides of the road 1 to the heat storage tank 4, as shown in FIGS. 2 and 5.

As shown in FIG. 2, a pit 52 on the heat insulating material 42 of the heat storage tank 4 has a pump 53 for pumping rainwater stored in the heat storage tank 4 and sending the rainwater to the water supply pipe 5. Is installed.

Therefore, the rainwater W stored in the heat storage tank 4
Is pumped up by a pump 53 and supplied to the highest center portion of the pavement surface 11 of the road 1 through a water supply pipe 5.
The rainwater that has flowed down the pavement surface 11 from the many water discharge holes 51 of the water supply pipe 5 toward the drainage grooves on both sides of the pavement surface 11 gradually flows down. The water is collected from the heat storage tank 4 through the recovery pipe 6 from the pipes 12 and 12.

As shown in FIG. 6, the solid material removing equipment 7 provided in the middle of the collection pipe 6 (at a location close to the heat storage water storage tank 4) is used to cover the bottom surface and the periphery of the small concrete tank 71 with the aforementioned foam such as EPS. A cover plate 73, which is covered with a heat insulating material 72 made of a plate and made of a similar foam plate, is detachably attached to an upper end opening of the concrete tank 71, and a collection pipe 6 inserted into the concrete tank 71. Pipe end 61 on the inflow side of
Is separated from the pipe end 62 on the outflow side by a net 74.

Therefore, even if solids such as mud and leaves are contained in the rainwater collected from the road 1 through the collecting pipe 6, the large solids 8a such as the leaves are separated by the net 74. The small solids 8 b such as mud that have passed through the net are settled and separated at the bottom of the concrete tank 71, so that clear rainwater is collected in the heat storage tank 4. In addition, the solid matter removing equipment 7 includes a heat insulating material 72.
By covering with a heat insulating cover plate 73, energy loss due to heat radiation is reduced.

In the snow melting system of the present invention provided with the heat storage water storage tank 4, the water supply pipe 5, the recovery pipe 6, and the solids removing equipment 7, the rainfall season such as the rainy season and the autumn rain, especially the rainfall season such as In the season when the amount is large, a large amount of rainwater falling on the pavement surface 11 of the road 1 is stored in the underground heat storage water storage tank 4 from the gutter 12 through the collection pipe 6. The rainwater W stored in the thermal storage tank 4 is pumped by the pump 53 from the midsummer to autumn, when the temperature is particularly high, through the water supply pipe 5, and the pavement surface 1 of the road 1
1 is supplied to the highest center part, and rainwater is heated from the water discharge hole 51 of the water supply pipe 5 by the radiant heat of the sun.
To remove heat from the pavement surface 11 and collect the rainwater from the side grooves 12 on both sides of the road to the heat storage water tank 4 through the recovery pipe 6, thereby repeating the operation of the heat storage water tank 4 and its surroundings. Stores a lot of heat in the ground. In this case, even if the collected rainwater contains the solids 8a and 8b, the solids are separated and removed by the solids separation facility 7 as described above, so that there is no concern that the solids accumulate at the bottom of the heat storage water storage tank 4. .

As described above, rainwater is supplied to the pavement surface 11 of the road 1.
When the operation of removing the heat and collecting it in the heat storage water tank 4 is repeated, the pavement surface 11 of the road 1 is heated to a high temperature of 50 to 70 ° C. by the radiant heat of the sun in the summer, so that a large amount of heat is generated. The heat is stored in the heat storage tank 4 and the surrounding ground. In particular, the heat storage tank 4 made of concrete can store a large amount of heat in the main body, and furthermore, the heat storage water tank is formed such that the periphery of the heat insulating material 42 covering the opening of the heat storage water tank 4 protrudes from the heat storage water tank 4. By preventing heat radiation from the side wall of 4 to the ground, heat can be stored in the ground around the heat storage tank, so even in the snowy winter,
By this large amount of heat storage, rainwater in the heat storage water storage tank 4 is maintained at a temperature equal to or higher than groundwater.

Therefore, during the snowy season, warm rainwater in the heat storage tank 4 is supplied by the pump 53 to the highest center portion of the pavement surface 11 of the road 1 through the water supply pipe 5 and a large number of water supply pipes 5 are provided. When rainwater flows from the water discharge hole 51 to both sides of the pavement surface 11, snow accumulated on the pavement surface 11 can be efficiently and uniformly melted.

Further, when rainwater flows on the pavement surface 11 of the road 1 in the middle of summer, a part of the rainwater evaporates and deprives the latent heat of vaporization, so that the hot air on the road can be softened.

In the snow melting system of the embodiment described above, the rainwater falling on the pavement surface 11 of the road 1 is stored in the heat storage water storage tank 4 from the side grooves 12, 12 through the recovery pipe 6. A water collecting pipe different from 6 may be further provided to collect water other than groundwater such as rainwater or tap water from a location other than the road into the heat storage water storage tank 4 and store the collected water. Depending on the case, a plurality of water supply pipes 5 and recovery pipes 6 may be provided.

[0040]

The snow melting system for roads according to the present invention raises the temperature of rainwater and the like under effective use of the radiant heat of the roads, and stores it underground.
This warm water can efficiently melt snow that has accumulated on the pavement of the road.There is no danger of land subsidence because groundwater is not used. It has a remarkable effect that can be softened.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram of a road snow melting system according to an embodiment of the present invention.

FIG. 2 is a sectional view of a heat storage tank of the snow melting system.

FIG. 3 is a perspective view of a filler filled in the heat storage tank.

FIG. 4 is a sectional view of a road for explaining a water supply pipe of the snow melting system.

FIG. 5 is a sectional view of a road for explaining a water collecting pipe of the snow melting system.

FIG. 6 is a sectional view of the solid matter removing device of the snow melting system.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Road 11 Pavement surface 12 Gutter 4 Thermal storage tank 41 Filler 42 Thermal insulation material covering opening of thermal storage tank 5 Water supply pipe 51 Water discharge hole 6 Recovery pipe 7 Solid removal equipment 8a, 8b Solid

Claims (5)

[Claims] 1. A thermal storage tank provided underground near a road, a water supply pipe for supplying and flowing water stored in the thermal storage tank to a pavement surface of the road, and a water supply pipe to supply water to the pavement surface of the road. And a collection pipe for collecting the collected water in the heat storage tank.In the season when snow does not fall, the water stored in the heat storage tank flows through the water supply pipe to the pavement surface of the road heated by the radiant heat of the sun. By repeating the operation of recovering the water from which heat has been taken from the pavement surface into the heat storage water storage tank through the recovery pipe,
Heat is stored in the heat storage tank and the surrounding ground, and in the snowy season, the warm water in the stored heat storage tank flows through the water supply pipe to the pavement surface of the road, so that the snow accumulated on the pavement surface A snow melting system for roads, characterized by melting snow. 2. The water stored in the heat storage tank is supplied to a high position on a pavement surface of a road by a pump through a water supply pipe to flow naturally on the pavement surface, and the water flowing on the pavement surface is lowered on the road surface. 2. The snow melting system according to claim 1, wherein the heat is collected from the section to a heat storage water storage tank through a collection pipe. 3. 3. The snow melting system according to claim 1, wherein the heat storage water storage tank is provided underground near a road, such as a children's park, a park, a parking lot, or a school. 4. The heat storage water storage tank is a concrete tank,
2. The thermal storage tank according to claim 1, wherein a peripheral portion of the heat insulating material covering the opening of the heat storage tank protrudes outside the heat storage tank.
3. The snow melting system according to 1. 5. The snow melting system according to claim 2, further comprising a solid removing device for removing solids such as mud, sand, dust and the like in the middle of the water collecting pipe.