JP2011021370A - Snow melting system and snow melting method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a structurally simple snow melting system capable of efficiently melting snow by utilizing groundwater, and a snow melting method. <P>SOLUTION: A dumping tank 5 is a tank for dumping the snow from the ground. An upper portion of the dumping tank 5 can be opened, and a lower portion thereof is provided with a chute with an inclined plane. A snow crushing portion 7, which communicates with the chute of the dumping tank 5, is a portion for finely cutting the snow. A snow flowing portion 9 communicates with the snow crushing portion 7; and the snow and water, which flow out from the snow crushing portion 7, flow into the snow flowing portion 9. The water is stored to a predetermined water level in the snow flowing portion 9; and the snow floats above it. A thermal storage tank 11 is annexed to the snow flowing portion 9. The water can be stored to a predetermined water level in the thermal storage tank 11. The thermal storage tank 11 and the snow flowing portion 9 communicate with each other inside. The water in the thermal storage tank 11 is fed into the snow flowing portion 9. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

  The present invention relates to a snow melting device and a snow melting method that melt ground by spraying groundwater into snow.

  Conventionally, in heavy snow areas and the like, the road is removed by a snowplow during snowfall. The snow removed on the side of the road is transported and collected by a truck or the like to a predetermined snow accumulation site installed in the area.

  However, if there is snow in the early morning, the snowplow will collide with the commuting rush and snow removal will not proceed. In addition, since priority is given to snow removal on main arterial roads, there was a problem that snow removal in residential areas was postponed and snow removal in residential areas did not proceed.

  In addition, there is a limit to the installation of a snow accumulation site, and it is costly to carry snow to a snow accumulation site in the suburbs. Also, there are problems such as environmental pollution and traffic congestion due to exhaust gas during transportation. There is.

  In addition, when the snow removed from the side of the road is left and the snow is not removed by a truck or the like, the road prospect is poor and a traffic accident may occur.

  Therefore, it is desirable that the snow removed is reliably melted at a position as close as possible to the place where the snow has been removed.

  As an apparatus for melting snow from such snow removed, there is a snow melting apparatus that draws up ground water and sprinkles water on the snow in a snow melting tank buried underground (Patent Document 1).

JP 2004-339904 A

  However, since the underground buried snow melting apparatus described in Patent Document 1 uses ground water, a heat source or the like is not necessary, and the structure is simple. However, since only the shower is sprayed from above, snow melting efficiency is not so high. . In addition, wire mesh for finely collecting snow and catching snow once, and grid-shaped inner lids, etc., accumulate when a lot of snow is thrown in at once, so the next snow is thrown in until the thrown snow melts There is a problem that you need to wait.

  In addition, the snow removed from the snow is usually in a pressed state, and there is a problem that when it is put on the lattice-shaped inner lid, the snow is not easily divided by the inner lid.

  The present invention has been made in view of such problems, and an object of the present invention is to provide a snow melting apparatus and a snow melting method that can efficiently melt snow using groundwater and have a simple structure.

  In order to achieve the above-mentioned object, a first invention is a snow melting device for melting snow with groundwater, a first pump for pumping up groundwater, a charging tank capable of charging snow from above, and a communication with the charging tank. A snow-breaking portion having an inclined surface formed on the lower surface, and a discharge portion capable of discharging the groundwater pumped by the first pump to the snow on the inclined surface; and communicating with the snow-breaking portion At least a snow flowing part in which water of a predetermined water level is stored and capable of floating the snow flowing out from the snow breaking part, and a heat storage tank storing water for melting the snow in the snow flowing part. The snow melting device is provided with a circulation means for circulating water between the snow flowing portion and the heat storage tank.

  An infiltration tank for allowing water flowing out from the snow flowing portion to penetrate underground may be further provided, and the circulating means is a second pump, and the second pump pumps water from the heat storage tank to the flowing snow. You may send it to the department.

A stirring means for stirring the water in the snow flowing part and / or the heat storage tank;
The stirring means may include means for bubbling the snow flowing part and / or the heat storage tank.

  A pit provided with a third pump is provided between the snow flowing part and the infiltration tank, and water flowing out from the snow flowing part flows into the pit and is stored, and the third pump Depending on the water temperature in the pit, the water in the pit may be supplied to the infiltration tank or the heat storage tank.

  It is desirable that a plurality of the discharge units are provided in parallel in a direction substantially perpendicular to the inclination direction of the inclined surface. A plurality of resin skeleton blocks may be combined in the heat storage tank.

  According to the first invention, in order to divide the introduced snow on the inclined surface, the divided snow is sequentially sent to the flowing snow part. For this reason, it is possible to prevent snow from accumulating in the charging tank. Moreover, since the water in the flowing snow part where the snow is floating is stirred, the floating snow can be efficiently melted. Moreover, since the flowing snow part which floats snow and the heat storage tank which keeps water temperature constant were isolate | separated, snow does not accumulate in a heat storage tank.

  In particular, if the water in the heat storage tank is circulated into the flowing snow part, water having a higher water temperature can be sent to the flowing snow part, and the snow in the flowing snow part can be melted more efficiently. In addition, if the inside of the flowing snow part is bubbled, the snow floating in the flowing snow part is lifted upward, and the water in the tank is further stirred, so that the snow melting efficiency can be improved.

  In addition, if the water flowing out from the snow flowing part is collected in the pit and the water temperature in the pit is low, the water is transferred to the infiltration tank as it is to penetrate the water underground. If the water inside is returned to the heat storage tank, snow melting efficiency can be further increased.

  In addition, if a plurality of discharge sections are arranged substantially perpendicularly to the inclined surface, the snow can be finely divided in the inclined direction, so that it is possible to more efficiently divide the snow that has been thrown in. The snow that has been used can be efficiently sent to the snowfall section.

  Further, since the resin skeleton block is combined in the heat storage tank, the strength from above the heat storage tank can be increased, and man-hours and costs can be reduced as compared with the construction of the heat storage tank using concrete. Moreover, when water flows in the heat storage tank, the flow of water in the heat storage tank is complicated by the resin skeleton block, and the water in the heat storage tank is agitated, so that the water temperature in the heat storage tank is made uniform.

  The second invention is a snow melting method for melting snow with groundwater, which is in communication with the first pump for pumping up groundwater, a charging tank capable of supplying snow from above, and an inclined surface formed on the lower surface. The ground breaking water pumped by the first pump is connected to the snow breaking portion where a discharge portion capable of discharging the ground water to the snow on the inclined surface, and the snow breaking portion is communicated, and water of a predetermined water level is stored, A snow flowing part capable of floating the snow flowing out from the snow breaking part, a heat storage tank for storing water for melting the snow in the snow flowing part, and the water flowing out from the snow flowing part penetrated underground Using a snow melting device comprising a permeation tank, and by using the first pump, water is sprayed from the discharge portion into the snow, and the snow is divided in a direction substantially perpendicular to the inclination direction of the inclined surface, Float the divided snow in the flowing snow part, between the heat storage tank and the flowing snow part Melting snow in the flow snow part by circulating a snow melting method characterized by impregnating the flowing water from the flow of snow section underground by the impregnation vessel.

  According to the second invention, the introduced snow is divided in a direction substantially perpendicular to the direction in which the snow flows by the discharge portion provided on the inclined surface in a direction substantially perpendicular to the inclined surface. Can be sent to the snow part. Moreover, since the water in a thermal storage tank is sent in into a flowing snow part with respect to the snow which floats in a flowing snow part, snow can be melt | dissolved efficiently. In particular, since the flowing snow part that floats the snow and the heat storage tank that keeps the water temperature constant are separated, the floating snow does not accumulate in the heat storage tank.

  ADVANTAGE OF THE INVENTION According to this invention, snow melting can be performed efficiently using groundwater, and a snow melting apparatus and a snow melting method with a simple structure can be provided.

It is the schematic which shows the structure of the snow melting apparatus 1, (a) is a top view, (b) is the sectional view on the AA line of (a). It is a figure which shows the charging tank 5 and the snow breaking part 7, (a) is an elevation, (b) is a top view. The figure which shows the state by which the snow 57 thrown into the insertion tank 5 is parted by the snow breaking part 7. FIG. It is a figure which shows the thermal storage layer 11 and the snow drift part 9, (a) is an elevation view, (b) is the I section C part enlarged view of (a). The figure which shows the circulation of the water of the thermal storage layer 11 and the flowing snow part 9. FIG. The figure which shows the osmosis tank 17. FIG. It is a figure which shows the state which bubbles in the snow-flow part 9 and the thermal storage tank 11, (a) is a top view, (b) is the QQ sectional view taken on the line of (a). It is a figure which shows the flowing snow part 9a, (a) is a perspective view, (b) is a figure which shows the state which the snow 57 floats in the flowing snow part 9a. The figure which shows the state which circulates water between the thermal storage tank 11 and the flowing snow part 9a. The figure which shows the other form of a snow-flow part and a thermal storage tank.

  Hereinafter, embodiments of the present invention will be described in detail. 1A and 1B are schematic views showing a snow melting device 1 according to an embodiment of the present invention. FIG. 1A is a plan view, and FIG. 1B is a cross-sectional view taken along line AA in FIG. is there.

  The snow melting device 1 mainly includes a pumping unit 3, a charging tank 5, a snow breaking part 7, a snow flowing part 9, a heat storage tank 11, an infiltration tank 17, and the like. As shown in FIG.1 (b), each structure is arrange | positioned underground.

  The pumping unit 3 is, for example, a well for pumping up groundwater, and a pumping pump 19 is installed. The pumping pump 19 may be a general submersible pump. The depth of the pumping section (pumping pump 19) is preferably deeper than the groundwater level and not deeply affected by the temperature on the ground.

  If the depth of the pumping pump 19 is too shallow, the pumping pump 19 is located above the groundwater level and cannot pump the groundwater. Even if the pumping water is below the groundwater, the temperature of the Low, snow melting efficiency decreases. On the other hand, when the depth of the pump 19 is too deep, excessive pumping capacity is required, and the construction cost is increased. Desirable depth of the pump 19 is, for example, about 50 m to 200 m. In this case, for example, the groundwater temperature is often about 17 ° C.

  The charging tank 5 is a tank for charging snow from the ground. The upper part of the charging tank 5 can be opened, and a shooter having an inclined surface is provided below.

  The snow breaking part 7 communicates with the shooter of the charging tank 5 and is a part for finely dividing the snow. Since the snow thrown into the throwing tank 5 is usually pressed and compacted, it is necessary to divide the snow finely in order to efficiently send the snow to the flowing snow part 9 described later. In the snow breaking part 7, the snow is sent to the flowing snow part on the downstream side while finely dividing the lump of snow. The details of the charging tank 5 and the snow breaking part 7 will be described later.

  The snow flowing part 9 communicates with the snow breaking part 7, and snow and water flowing out from the snow breaking part 7 flow into it. The snow flowing part 9 is a pipe that is divided into two hands, passes through the periphery of the heat storage tank 11, and communicates with the pit 15 on the side opposite to the charging tank 5 side of the heat storage tank 11 with a slight inclination angle. A predetermined level of water flows in the flowing snow part 9, and snow floats upward. In the flowing snow part 9, the floating snow is melted.

  A heat storage tank 11 is provided so as to be surrounded by the flowing snow part 9. The heat storage tank 11 can store water at a predetermined water level inside. The water temperature in the heat storage tank 11 is substantially constant. For example, the water temperature in the heat storage tank 11 is about 4 ° C. on average. Therefore, the water in the heat storage tank 11 has a water temperature sufficient to melt the snow. In addition, when the water temperature in the heat storage tank 11 becomes low, you may introduce | transduce the groundwater by the pumping pump 19 directly into the heat storage tank 11 by the route | root which abbreviate | omitted illustration. For example, in the time zone when snow is not charged, the introduction of groundwater into the charging tank 5 and the snowbreaking section 9 is stopped, and water is introduced into the heat storage tank 11 during that time, and the water temperature in the heat storage tank 11 is increased ( (4 ° C. or higher).

  A plurality of pits 13 are provided around the heat storage tank 11 at predetermined intervals. The pit 13 is provided with a circulation pump 25 which is a circulation means capable of circulating the water flowing out from the heat storage tank 11 to the snow flowing portion 9. An inspection port 41 is provided near the pit 13. The details of the water circulation and the inspection port 41 between the snow flowing part 9 and the heat storage tank 11 will be described later.

  A pit 15 is provided on the downstream side of the flowing snow part 9. The pit 15 is for drawing water that has flowed out of the snow-flowing portion 9. The temperature of the water flowing out from the flowing snow part 9 is lowered by melting the snow in the flowing snow part 9. Therefore, when the water temperature is too low (for example, 3 ° C. or less) to melt the snow any more, the water in the pit 15 is sent to the permeation tank 17 described later by the circulation pump 31.

  On the other hand, when the water temperature in the pit is still sufficiently high (for example, 4 ° C. or higher), the water in the pit 15 is sent into the heat storage tank 11 by the circulation pump 31.

  An infiltration tank 17 is provided on the downstream side of the pit 15 as necessary. The infiltration tank 17 is a tank for allowing unnecessary water after melting of snow to infiltrate underground. The water flowing into the osmosis tank 17 penetrates into the ground from the lower surface of the osmosis tank 17 or the like.

  Next, the flow of water and snow will be described with reference to FIG. The water pumped up by the pumping pump 19 (in the direction of arrow D in FIG. 1 (b)) is partly sent through the pipe 21 to the snow breaker nozzle 23, which is the discharge part, and the rest through the pipe 22 and charged. It is sent above the shooter of the tank 5 (in the direction of arrow E in FIG. 1B).

  The water sent to the snow breaker nozzle 23 is discharged from the upper part of the snow breaker 7 toward the lower slope (in the direction of arrow F in FIG. 1B). The snow breaker nozzle 23 is in a direction substantially perpendicular to the inclination direction of the lower surface of the snow breaker 7 (that is, a direction substantially perpendicular to the direction in which snow flows from the charging tank 5 toward the snowfall part 9). A plurality of pipes provided in parallel are provided in parallel. A plurality of pipe bodies provided with a plurality of snow breaker nozzles 23 provided in parallel are further provided along the inclination direction of the snow break portion 7.

  Snow and water flowing out from the snowbreaking part 7 flows into the flowing snow part 9. Snow or the like flowing into the flowing snow part 9 flows through the flowing snow part 9, flows around the heat storage tank 11, and flows into the pit 15 (in the direction of arrow G in FIG. 1B). As described above, the water flowing into the pit 15 is sent to the infiltration tank 17 through the pipe 33 when the water temperature is low (in the direction of arrow H in FIG. 1 (b)), and when the water temperature is relatively high, the pipe. 35 is sent to the heat storage tank 11. The water flow is controlled by a thermometer (not shown) and a control valve operated by the thermometer. Further, on / off of the circulation pump 31 may be controlled according to the water level in the pit 15 and the water temperature. The snow flowing part 9 is preferably located below the inclined surface 53 from the snow breaking part 7. This is because if the position is higher than the inclined surface 53, water is stored up to the inclined surface 53, and the function of the snow breaking portion 7 is reduced.

  A part of the water flowing into the heat storage tank 11 flows into the pit 13 communicating with the heat storage tank 11. Water in the pit 13 is pumped out by a circulation pump 25 installed in the pit 13, and is sent to the snow flowing part 9 through a pipe 27. The circulation of water between the heat storage tank 11 and the flowing snow part 9 will be described later.

  Water drawn from the pit 15 and flowing into the permeation tank 17 permeates into the basement from the lower surface of the permeation tank 17 (in the direction of arrow I in FIG. 1B). As a result, the snow is melted and the melted water penetrates into the basement. The water supply to the infiltration tank 17 does not need to use the circulation pump 31. For example, when the infiltration tank 17 is deepened and the water level of the pit 15 becomes a predetermined level or more, the water overflowing from the pit 15 Various methods such as flowing into the permeation tank 17 are conceivable. As long as water can be supplied to the permeation tank 17, any method may be used.

  Next, details of each component will be described. 2A and 2B are views showing the charging tank 5 and the snow breaking portion 7, FIG. 2A is a schematic elevation view of the charging tank 5 and the snow breaking portion 7, and FIG. 2B is a schematic plan view.

  A lid 55 is provided above the charging tank 5. The lid 55 can be opened and closed. When the snow is thrown in, the lid 55 is opened and the snow is poured into the charging tank 5. A shooter 51 that is inclined in the direction of the snowbreaking portion 7 is provided below the charging tank 5. The inclination angle of the shooter 51 is preferably about 30 °, for example.

  A pipe 22 is connected to the upper side of the shooter 51, and as described above, water pumped up by the pumping pump 19 flows from the pipe 22.

  A snow breaking part 7 is provided on the side of the charging tank 5. Below the snow breaking portion 7, an inclined surface 53 that is connected to the inclined surface of the shooter 51 and is inclined in the direction of the snow flowing portion 9 is provided. A plurality of snow break nozzles 23 are provided above the inclined surface 53 of the snow break portion 7. As described above, the snow breaking nozzle 23 is provided in parallel to the plurality of pipes 21 provided in a direction substantially perpendicular to the inclination direction of the inclined surface 53 below the snow breaking portion 7. That is, a plurality of snow breaking nozzles 23 are arranged in parallel in a direction substantially perpendicular to the inclination direction of the inclined surface 53 below the snow breaking portion 7. That is, in the snow breaking portion 7, water is discharged in a band shape in a direction substantially perpendicular to the inclination direction of the inclined surface 53 from the upper side of the snow breaking portion 7 toward the lower inclined surface 53.

  FIG. 3 is a view showing a state in which the snow 57 thrown into the throwing tank 5 is finely divided at the snow breaking portion 7. First, as shown in FIG. 3A, when snow 57 is thrown into the charging tank 5, the snow 57 slides on the shooter 51 due to the water flowing from the pipe 22 and the inclination of the shooter 51. Move in the direction. At this time, the snow 57 is in a state of being compacted in many cases and is a large lump.

  Next, as shown in FIG. 3B, when the tip of the snow 57 enters the snow breaking portion 7, the snow 57 is melted locally by the water of the snow breaking nozzle 23. At this time, since the snow breaking nozzles 23 are arranged in a direction substantially perpendicular to the inclination direction of the inclined surface 53, the snow 57 corresponds to the arrangement direction of the snow breaking nozzles 23 in the inclination direction of the inclined surface 53. On the other hand, it is divided in a substantially vertical direction. The snow 57 repeats moving and stopping on the inclined surface 53 while being divided by the snow breaking nozzle 23.

  As described above, as shown in FIG. 3C, the divided snow 57 moves in the direction of the rear snow flowing portion 9. In addition, since only the part to which the water discharged from the snow breaker nozzle 23 is concentrated locally and melt | dissolves the snow 57, the amount of water from the snow breaker nozzle 23 may be small. In other words, the snow breaking portion 7 requires only the amount of water necessary to divide the snow 57 into small pieces, and does not need to be the amount of water necessary to melt all the snow 57 that has been thrown in.

  Next, the snow flowing part 9 and the heat storage tank 11 will be described. 4 is a view showing a part of the snow flowing part 9 and the heat storage tank 11, FIG. 4 (a) is a cross-sectional view taken along line BB of FIG. 1 (a), and FIG. 4 (b) is FIG. It is an enlarged view of (a).

  The flowing snow part 9 is, for example, a concrete box culvert. Although the snow drifting part 9 is attached to the heat storage tank 11, the snow drifting part 9 is installed so as to bypass the pit 13 at the position of the pit 13 adjacent to the heat storage tank 11. The pit 13 and the heat storage tank 11 communicate with each other inside, and water is stored in the pit 13 at the same water level as the heat storage tank 11. A circulation pump 25 is installed in the pit 13.

  The circulation pump 25 is connected to the pipe 27. The pipe 27 is connected above the snow flowing part 9. That is, the circulation pump 25 can send the water in the pit 13 from above the snow flowing part 9 into the snow flowing part 9 through the pipe 27. A circulation pump 26 is installed in the flowing snow part 9. The circulation pump 26 is connected to the pipe 29. The pipe 29 is connected to the heat storage layer 11. That is, the circulation pump 26 can send the water in the flowing snow part 9 into the heat storage layer 11 through the pipe 29.

  In the heat storage tank 11, a plurality of resin blocks 39, which are resin skeleton blocks, are stacked and provided upward. The resin block 39 secures a space through which water flows, and has a strength for resisting earth pressure from above and around. The outer periphery of the heat storage tank is covered with a water shielding sheet 43 so that the water in the heat storage tank 11 does not flow out to the surrounding ground.

  An inspection port 41 is provided in the approximate center of the heat storage tank 11. The inspection port 41 is a work pit for performing periodic inspections in the tank. The portion corresponding to the inspection port 41 is not provided with the resin block 39 so as to communicate in the vertical direction, and a hole penetrating vertically is formed.

  FIG. 4B is an enlarged view of a portion C in FIG. A top plate 45 is provided on the resin block 39 above the inspection port 41. The water shielding sheet 43 is provided so as to cover the top plate 43. An entrance / exit 49 for the inspection port 41 is provided on the top plate 45. The entrance / exit 49 is, for example, a cylindrical member. A lid 47 that can be opened and closed is provided above the doorway 49. In addition, as needed, the resin-made heat insulating material etc. can be spread | laid between the upper surface of the thermal storage tank 11, earth and sand, or the outer periphery of the thermal storage tank 11 side surface. If it does in this way, the heat insulation of heat storage tank 11 will improve. As the heat insulating material, for example, polystyrene foam can be used.

  In the subsequent drawings, illustration of a part of the resin block 39 stacked in the internal intermediate portion is omitted.

  Next, the circulation of water between the snow flowing part 9 and the heat storage tank 11 will be described. FIG. 5 is a diagram illustrating the flow of water between the heat storage tank 11 and the snow drifting portion 9. A predetermined level of water flows in the flowing snow part 9. Since the inside of the flowing snow part 9 is a complete cavity, the snow 57 flowing in from the snow breaking part 9 is in a floating state in the flowing snow part 9. The heat storage tank 11 and the pit 13 communicate with each other below, and the water in the heat storage tank 11 flows into the pit 13 (in the direction of arrow J in the figure). The water that has flowed into the pit 13 is pumped up by the circulation pump 25, passes through the pipe 27, and flows into the snow flowing portion 9 (in the direction of arrow K in the figure).

  The water flowing in from above the flowing snow part 9 is directly applied to the snow 57 or the temperature of the water in the flowing snow part 9 is raised to melt the snow 57 flowing inside the flowing snow part 9. The water in the flowing snow part 9 slowly flows toward the pit 15 (FIG. 1) while the snow 57 is melted. A circulation pump 26 is installed in the vicinity of the bottom in the snow flowing portion 9. The circulation pump 26 pumps up the water in the flowing snow part 9 (in the direction of arrow L in the figure) and circulates the water to the heat storage tank 11 (in the direction of arrow M in the figure). As described above, the water in the heat storage tank 11 and a part of the water in the flowing snow part 9 circulate, and the snow 57 in the flowing snow part 9 can be melted at a high rate.

  Next, the permeation tank 17 will be described. FIG. 6 is a view showing the heat storage tank 17. A water permeable sheet 59 is provided around the permeation tank 17. Therefore, water permeates into the ground from the infiltration tank 17. A plurality of resin blocks 39 are provided in the permeation tank 17 (partially omitted from illustration of the resin blocks 39). The resin block 39 secures a space through which water flows. An inspection port 61 is provided in the approximate center of the infiltration tank 17. The resin block 39 and the inspection port 61 provided in the permeation tank 17 have substantially the same configuration as the resin block 39 and the inspection port 41 in the heat storage tank 11, and thus redundant description is omitted.

  The water level in the pit 15 communicating with the flowing snow part 9 is slightly lower than the water level in the flowing snow part 9, and the water flowing through the flowing snow part 9 flows into the pit 15 (in the direction of arrow N in the figure). A circulation pump 31 installed near the bottom of the pit 15 draws up water in the pit 15 and, depending on the water temperature in the pit 15 or the like, the permeation tank 17 (in the direction of arrow H in the figure) or the heat storage tank 11 (in the arrow in the figure). Send water in direction I). The water in the osmosis tank 17 penetrates into the ground (in the direction of arrow P in the figure).

  As described above, according to the snow melting device 1 according to the first embodiment, the charging tank 5 to the snow breaking portion 7 that finely divides the snow 57, the flowing snow portion 9 that melts the snow 57, and the snow 57. Since the heat storage tank 11 and the pit 15 for efficiently melting and the permeation tank 17 for allowing water to permeate the ground are provided separately, the snow 57 can be efficiently and reliably melted. In particular, since the thrown-in snow 57 is divided on the inclined surface 53 in a direction substantially perpendicular to the inclined direction, the divided snow can be efficiently sent to the flowing snow part 9. For this reason, accumulation of snow 57 in the charging tank 5 can be prevented. In addition, since the snow 57 can be suspended in the flowing snow part 9, the snow 57 can be reliably melted without accumulating.

  In addition, since the water in the heat storage tank 11 can be sent to the flowing snow part 9 and circulated, the snow 57 floating in the flowing snow part 9 can be efficiently melted. In particular, since the flowing snow part 9 that floats the snow 57 and the heat storage tank 11 that maintains the water temperature of the water for melting the snow 57 are separated, the snow 57 does not accumulate in the heat storage tank 11 and Since the site | part which melt | dissolves 57 and the site | part which keeps water temperature constant, each function can be exhibited efficiently.

  In addition, when water flowing out from the snow flowing part 9 is accumulated in the pit 15 and the water temperature in the pit 15 is low, the water temperature is transferred to the infiltration tank 17 as it is and the water is infiltrated into the basement. Then, since the water in the pit 15 is returned to the heat storage tank 11, the groundwater can be used efficiently, and the snow melting efficiency is high.

  Moreover, since the resin block 39 is combined in the heat storage tank 11, the intensity | strength from the upper direction of the heat storage tank 11 can be raised, and the man-hour and cost at the time of constructing the heat storage tank 11 can be reduced. Moreover, when the water flows in the heat storage tank 11, the flow of water in the heat storage tank 11 is complicated by the resin block 39, and the water in the heat storage tank 11 is circulated, so that the water temperature in the heat storage tank 11 is made uniform. Is done.

  Next, a second embodiment will be described. The snow melting device according to the second embodiment has a configuration similar to that of the snow melting device according to the first embodiment, and is further provided with stirring means. In the following embodiments, constituent elements that perform the same functions and effects as those of the snow melting device 1 according to the first embodiment are denoted by the same reference numerals as those in FIG.

  FIG. 7 is a view showing a state in which a bubbling nozzle 67 as a stirring means is installed in the heat storage tank 11 and the like, FIG. 7 (a) is a plan view, and FIG. 7 (b) is a QQ of FIG. 7 (a). It is line sectional drawing.

  A compressor 63 is provided outside the snow flowing portion 9. Air is sent from the compressor 63. The air sent from the compressor 63 is sent via a pipe 65 to a plurality of bubbling nozzles 67 provided in the snow flowing part 9 and the lower part in the heat storage tank 11. Bubbles are generated from the bubbling nozzle 67 in the water in each tank, and the water is stirred by the bubbles. In addition, you may perform the bubbling in a tank in any one of the snow-flow part 9 and the thermal storage tank 11. FIG.

  According to the second embodiment, an effect similar to that of the snow melting device 1 according to the first embodiment can be obtained. In addition, the snow 57 can be more reliably melted in the flowing snow part 9 and the water around the snow 57 can be moved, so that the snow 57 can be melted more efficiently.

  Next, a third embodiment will be described. The snow melting device according to the third embodiment has the same configuration as that of the snow melting device according to the first embodiment, but a slit is provided on the side surface of the snow melting portion and communicates directly with the heat storage tank 11 and the like.

  FIG. 8A is a perspective view, and FIG. 8B is a front sectional view. A plurality of slits 37 are provided on one side surface of the flowing snow part 9a. The slits 37 are provided in the vertical direction of the side surface of the snow flowing portion 9a, and a plurality of slits 37 are provided in parallel in the longitudinal direction of the snow flowing portion 9a (the direction from the snow breaking portion 7 toward the pit 15). The heat storage tank 11 is disposed on the side of the snow flowing portion 9 a where the slit 37 is provided, and the snow flowing portion 9 a and the heat storage tank 11 communicate with each other through the slit 37. That is, the water in the heat storage tank 11 and the water in the flowing snow part 9a can be convected. As shown in FIG. 8 (b), water of a predetermined water level is caused to flow through the snow flowing portion 9a. In addition, the slit 37 does not need to be formed over the full length of the flowing snow part 9a, and may be formed partially.

  FIG. 9 is a diagram showing the relationship between the snow flowing part 9 a and the heat storage tank 11. A circulation pump 25 is installed in the heat storage tank 11. The circulation pump 25 may be installed in a pit that communicates with the heat storage tank 11. The water in the heat storage tank 11 pumped up by the circulation pump 25 flows into the snow flowing part 9a from the upper part of the snow flowing part 9a (in the direction of arrow R in the figure). The snow floating in the flowing snow part 9a is melted by the water sent from the upper part. The water in the flowing snow part 9 a passes through the slit 37 and circulates in the heat storage tank 11.

  According to the third embodiment, an effect similar to that of the snow melting device 1 according to the first embodiment can be obtained. In addition, a pump for drawing water from the flowing snow part 9a is not necessary.

  As mentioned above, although embodiment of this invention was described referring an accompanying drawing, the technical scope of this invention is not influenced by embodiment mentioned above. It is obvious for those skilled in the art that various modifications or modifications can be conceived within the scope of the technical idea described in the claims, and these are naturally within the technical scope of the present invention. It is understood that it belongs.

  For example, the forms of the snow flowing part 9 and the heat storage tank 11 are not limited to those described above. FIG. 10 is a diagram showing another embodiment of the snow flowing part and the heat storage tank. For example, as shown to Fig.10 (a), you may provide the snow flow part 9b of circular cross section in the pit 13 side connected to the thermal storage tank 11a. That is, instead of the box culvert, a tubular body may be used as the flowing snow part 9b. For example, a vinyl chloride tube or a fume tube can be used as the snow flowing portion 9b of the tube. A pipe 71 is provided above the snow flowing portion 9b. The pipe 71 is connected to the circulation pump 25 b in the pit 13. A pipe 73 is provided below the snow flowing part 9 b, and the snow flowing part 9 b and the heat storage tank 11 b communicate with each other through the pipe 73.

  The water pumped up by the circulation pump 25b passes through the pipe 71 and is sent into the snow flowing portion 9b (in the direction of arrow T in the figure). The water in the flowing snow part 9b returns to the heat storage tank 11 through the lower piping 73 (in the direction of arrow U in the figure). By the above, the water of the snow-flowing part 9b and the heat storage tank 11 circulates, and the water in the snow-flowing part 9b is stirred. It is desirable that the pipe 71 is provided at a position higher than the water surface in the flowing snow part 9b. Thereby, the convection water which flows out out of the piping 71 can be directly poured on the snow 57, and snow melting efficiency is high.

  Further, as shown in FIG. 10B, a circulation pump 25c may be provided in the snow flowing portion 9c. The water in the snow flowing part 9c pumped up by the circulation pump 25c is sent into the both heat storage tanks 11 via the pipe 68 (in the direction of arrow W in the figure). A pipe 69 is provided at a predetermined height of the heat storage tank 11 (a position lower than the pipe 68). The pipe 69 communicates with the snow flowing part 9c, and the water in the heat storage tank 11 flows out into the snow flowing part 9c through the pipe 69 (in the direction of arrow V in the figure). Thereby, the water in the flowing snow part 9c and the water in the heat storage tank 11 circulate, and the snow 57 is efficiently melted.

  At this time, by making the diameter of the pipe 69 sufficiently smaller than the pumping capacity of the circulation pump 25c, the water level in the snow flowing part 9c can be made lower than the pipe 69 (that is, the water level in the snow flowing part 9c). Thus, the outlet of the convection water from the heat storage tank 11 can be set to a higher position), so that the water in the heat storage tank 11 can be directly poured on the snow 57 floating in the snow flowing portion 9c. For this reason, the melting efficiency of the snow 57 is high.

As described above, the present invention can provide a snow flowing part capable of floating snow and a heat storage tank capable of keeping the water temperature constant without snow entering the inside. Various other modes can be adopted.

DESCRIPTION OF SYMBOLS 1 ......... Snow melting apparatus 3 ......... Pumping part 5 ......... Injection tank 7 ......... Snow-breaking part 9, 9a, 9b, 9c ...... Snow-flowing part 11, 11a, 11b ......... Thermal storage tank 13 ... ...... Pit 15 ...... Pit 17 ............ Penetration tank 19 ............ Pump pumps 21, 22 ............ Piping 23 ............ Snow-breaking nozzles 25, 25 a, 25 b, 25 c ............ circulation pump 27 ............ Piping 31... Circulating pumps 33 and 35... Piping 37... Slit 39... Resin block 41... Inspection port 43 ... Water shielding sheet 45 ... Top plate 47 ... Lid 49 ......... Exit port 51 ... …… Shooter 53 ......... Inclined surface 55 ......... Ladder 57 ......... Snow 59 ......... Permeable sheet 61 ......... Inspection port 63 ......... Compressor 65 ......... Pipe 67 ... ... Bubbling nozzle

Claims (8)

A snow melting device that melts snow with groundwater,
A first pump that pumps up groundwater;
A charging tank capable of supplying snow from above;
A snow break part in communication with the charging tank, an inclined surface is formed on the lower surface, and a discharge part capable of discharging the groundwater pumped by the first pump to the snow on the inclined surface;
A snow flowing part that communicates with the snow breaking part, stores water at a predetermined water level, and can float the snow that has flowed out of the snow breaking part,
A heat storage tank for storing water for melting snow in the flowing snow part;
Comprising at least
A snow melting device, characterized in that a circulation means for circulating water between the snow flowing part and the heat storage tank is provided.   The snow melting apparatus according to claim 1, further comprising a permeation tank that permeates water flowing out of the snow flowing portion into the underground.   3. The snow melting device according to claim 1, wherein the circulation unit is a second pump, and the water in the heat storage tank is sent to the snow flowing portion by the second pump. A stirring means for stirring the water in the snow flowing part and / or the heat storage tank;
The snow melting apparatus according to any one of claims 1 to 3, wherein the stirring means includes means for bubbling the snow flowing portion and / or the heat storage tank.   A pit provided with a third pump is provided between the snow flowing part and the infiltration tank, and water flowing out from the snow flowing part flows into the pit and is stored, and the third pump The snow melting device according to any one of claims 2 to 4, wherein water in the pit is supplied to the infiltration tank or the heat storage tank in accordance with a water temperature in the pit.   6. The snow melting device according to claim 1, wherein a plurality of the discharge units are provided in parallel in a direction substantially perpendicular to the inclination direction of the inclined surface.   The snow melting device according to any one of claims 1 to 6, wherein a plurality of resin skeleton blocks are combined in the heat storage tank. A snow melting method that melts snow with groundwater,
A first pump for pumping up groundwater, a charging tank capable of supplying snow from above, and an inclined surface formed on a lower surface in communication with the charging tank, and groundwater pumped by the first pump on the inclined surface A snow break part in which a discharge part capable of discharging the snow is disposed, and a snow flow that communicates with the snow break part, stores water of a predetermined water level, and can float the snow that has flowed out of the snow break part A snow storage device comprising: a heat storage tank that stores water for melting the snow in the flowing snow part, and a permeation tank that permeates the water that has flowed out of the flowing snow part into the basement,
By the first pump, water is sprinkled from the discharge part to sever the snow in a direction substantially perpendicular to the inclined direction of the inclined surface,
Float the divided snow in the flowing snow part,
Melting the snow in the flowing snow part by circulating water between the heat storage tank and the flowing snow part,
A snow melting method, wherein water flowing out of the snow flowing part is infiltrated into the underground with the infiltration tank.

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