JP3970812B2 - Snow melting equipment - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a snow melting device.
[0002]
[Prior art and problems to be solved by the invention]
Conventionally, a snowmelting device generally uses a watering method of pumping up groundwater and spraying it, but this method is not suitable for an area with little groundwater because there is concern about ground subsidence due to the depletion of groundwater.
[0003]
Then, the heat exchange well system which collects groundwater heat from a heat exchange well and uses it for snow melting is proposed. In this system, a tube body in which a heat collecting fluid is sealed is disposed in a heat exchanging well, heat exchange is performed by circulating the heat collecting fluid, and snow melting is performed by this heat collecting. Therefore, this method does not consume groundwater and can be applied to areas where ground subsidence due to groundwater depletion is a concern or areas where there is little groundwater.
[0004]
However, in this method, since the groundwater flow in the well is stagnant and the groundwater temperature gradually decreases, the amount of heat collected per heat exchange well is small, and the well is not enough to secure the amount of heat necessary for melting snow. There is a problem that it is not economical because it is necessary to increase the number.
[0005]
The present invention solves the above-described problems, and provides an snow melting device that is free of groundwater, has high groundwater heat collection efficiency, and is economical.
[0006]
[Means for Solving the Problems]
The gist of the present invention will be described with reference to the accompanying drawings.
[0007]
A snow melting device that melts snow by collecting heat from groundwater. A circulation pipe 5 including a feed pipe 3 and a return pipe 4 through which a fluid flows is disposed in a well 2 that reaches the groundwater layer 1. pipe 5 is provided continuously and snow melting section 9 provided on the ground, heated adopted by the fluid of the circulation pipe 5 from groundwater in the well 2, is configured to snow melting is performed in the snow-melting section 9 by the heat Further, a stirring unit 6 for stirring the ground water in the well 2 is provided in the well 2, and the stirring unit 6 has an introduction pipe 6 a and a discharge pipe 6 b connected by a pump 7. The groundwater is led out from the lead-out pipe 6b and returned to the well 2 through the lead-in pipe 6a, and the lower end of the lead-out pipe 6b is the bottom of the well 2 and a predetermined distance upward from the bottom of the well 2 Placed at position S Lower end of the inlet pipe 6a is one of the snow melting apparatus, characterized in that arranged on the top of the well 2.
[0008]
Also, in the snow melting apparatus of claim 1, wherein the lower portion of the circulation pipe 5 is one of the snow melting apparatus characterized by being arranged at a position a predetermined distance T upward from the bottom of the well 2.
[0009]
Also, in the snow melting apparatus of any one of claims 1, wherein the snow melting section 9 is one of the snow melting apparatus, which is a mat member 8 for melting snow.
[0010]
Moreover, the snow melting apparatus of any one of Claims 1-3 WHEREIN: The said well 2 is plural, It concerns on the snow melting apparatus characterized by heat-collecting from this several well 2. FIG.
[0011]
Moreover, the snow melting apparatus of any one of Claims 1-4 WHEREIN: The fluid which distribute | circulates the said circulation pipe 5 is an antifreezing liquid, It concerns on the snow melting apparatus characterized by the above-mentioned.
[0012]
Moreover, the snow melting apparatus of any one of Claims 1-5 WHEREIN: The circulation pump 10 is provided in the said circulation pipe 5, It concerns on the snow melting apparatus characterized by the above-mentioned.
[0013]
[Action and effect of the invention]
A circulation pipe 5 including a feed pipe 3 and a return pipe 4 through which a fluid circulates is disposed in the well 2 reaching the groundwater layer 1, and this circulation pipe 5 is connected to a snow melting portion 9 provided on the ground surface. Therefore, the ground water in the well 2 is collected by the fluid in the circulation pipe 5, and snow melting is performed in the snow melting portion 9 by the heat.
[0014]
At this time, since the well 2 is provided with the agitation unit 6 for agitating the groundwater in the well 2, the lower-layer groundwater heated by geothermal heat can also flow into the upper layer, and thus the circulation The fluid in the pipe 5 efficiently collects groundwater.
[0015]
Therefore, according to the present invention, only the heat of the groundwater is collected by the circulation pipe 5 and the snow melting is performed. Therefore, the waste of the groundwater is eliminated, and the groundwater is stirred by the stirring unit 6, so that the heat collection efficiency is improved. It becomes an extremely excellent snow melting device economically.
[0016]
DETAILED DESCRIPTION OF THE INVENTION
The figure illustrates one embodiment of the present invention and is described below.
[0017]
The well 2 is drilled so as to reach the groundwater layer 1 heated by geothermal heat in the vicinity of the ground several tens to several hundreds of meters below ground.
[0018]
The circulation pipe 5 includes a feed pipe 3, a return pipe 4, and a circulation pump 10, in which a fluid such as water, antifreeze liquid, or air is enclosed as a heat collection fluid, and a part of the circulation pipe 5 is well 2. The groundwater is heat-collected with the internal heat-collecting fluid.
[0019]
The lower part of the circulation pipe 5 disposed in the well 2 is located as close as possible to the bottom of the well 2, specifically from the bottom upward so as to reach a water layer well heated by geothermal heat. It is arranged at a position with a predetermined distance T, and groundwater heat is efficiently collected.
[0020]
The circulation pipe 5 is connected to a snow melting portion 9 provided on the ground surface. The snow melting portion 9 is a mat body 8 in which a circulation pipe 5 is embedded in a pavement body such as asphalt, concrete, brick, or the circulation pipe 5 is laid in a lower part of the pavement body.
[0021]
The well 2 is provided with a stirring unit 6.
[0022]
The stirring unit 6 is disposed in the well 2, and an introduction pipe 6a and a lead-out pipe 6b are connected to a pump 7, and the pump 7 guides groundwater in the well 2 from the lead-out pipe 6b. Thus, the groundwater in the well 2 is forcibly agitated by the introduction and introduction of the groundwater.
[0023]
The lower end of the lead-out pipe 6b is disposed at a predetermined distance S from the bottom so as to reach the part of the well 2 that is well warmed by geothermal heat closer to the ground, and the lower end of the introduction pipe 6a is The upper portion of the well 2 is disposed at a relatively low temperature. Therefore, the upper layer and the lower layer of the ground water in the well 2 can be stirred more effectively.
[0024]
Moreover, more heat can be extracted from the groundwater by installing a plurality of the wells 2 described above.
[0025]
Since the present embodiment is configured as described above, the following operational effects can be obtained.
[0026]
Since water, antifreeze, or air as a heat collection fluid is hermetically circulated inside the circulation pipe 5, groundwater is not sprinkled (only groundwater heat is collected), and therefore there is no waste of groundwater. Moreover, it is the same as using the inside of the well 2 as it is in a natural state, and it is a very convenient snow melting device that requires almost no maintenance such as cleaning the inside of the well 2.
[0027]
Moreover, since the ground water in the well 2 can be stirred by the stirring unit 6, the ground water heated by the geothermal heat of the lower layer of the ground water layer 1 can be flowed to the upper layer of the well 2, and the circulation pipe 5 The heat collection efficiency of the internal heat collection fluid is improved. Further, the stirring unit 6 merely circulates the groundwater in the groundwater layer 1 and does not consume groundwater, so that this point is also excellent in practicality.
[0028]
In the experiment, it was confirmed that the heat collection efficiency of the heat collection fluid in the circulation pipe 5 by stirring the well 2 was 1.4 times that in the case where stirring was not performed.
[0029]
Further, by installing a plurality of wells 2, the amount of groundwater heat collected can be further increased, and a higher snow melting effect can be obtained.
[0030]
As described above, in the present embodiment, since the heat collection fluid is hermetically circulated inside the circulation pipe 5 and only heat is collected from the groundwater, there is no waste of groundwater and there is no concern about land subsidence due to the depletion of groundwater. Moreover, since the inside of the well 2 of groundwater can be utilized with a natural state, it becomes a snow melting apparatus with little need for maintenance, such as washing in the well 2.
[0031]
Further, stirring unit 6 is only to enter derive the groundwater in the well 2 in a single, for example, since not a complicated method or equipped with a stir blade to the bottom of the circulation pipe 5, and correspondingly less costly a snow melting apparatus Become.
[Brief description of the drawings]
FIG. 1 is a conceptual diagram of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Groundwater layer 2 Well 3 Feeding pipe 4 Return pipe 5 Circulation pipe 6 Stirring part 6a Introducing pipe 6b Outlet pipe 7 Pump 8 Mat body 9 Snow melting part
10 Circulation pump S Predetermined distance T Predetermined distance

Claims (6)

A snow melting device that melts snow by collecting heat from groundwater, and a circulation pipe consisting of a feed pipe and a return pipe through which fluid flows is arranged in the well reaching the groundwater layer. is snow melting portion and continuously arranged provided, heated adopted by the fluid in the circulation pipe from the ground water in the well, is configured such snow melting is performed in the snow melting unit by this heat, the further the inner well該井Tonai An agitation part for agitating the groundwater is provided, and the agitation part is connected to the introduction pipe and the outlet pipe by a pump, and the groundwater is led out from the outlet pipe by the pump, and is introduced into the well from the introduction pipe. The lower end of the lead-out pipe is disposed at a predetermined distance from the bottom of the well, and the lower end of the introduction pipe is disposed at the top of the well. Characterize Snow melting apparatus. In snow melting apparatus of claim 1, wherein snow melting apparatus lower portion of the circulating pipe, characterized in that it is disposed at a position a predetermined distance upwardly from the bottom of the well. In snow melting apparatus according to any one of claims 1, 2, snow melting device, wherein the snow melting portion is a mat body for melting snow. In snow melting apparatus according to any one of claims 1 to 3, wherein the well is more, snow melting apparatus, characterized by Tonetsu from the plurality of wells. 5. The snow melting device according to claim 1, wherein the fluid flowing through the circulation pipe is an antifreeze liquid. 6. The snow melting apparatus according to claim 1, wherein a circulation pump is provided in the circulation pipe.

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