JPH0377883B2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a waterless snow removal device for melting snowfall and snow accumulation in cold regions with heavy snowfall, and in particular, the present invention relates to a waterless snow removal device for melting snowfall and snow accumulation in cold regions with heavy snowfall, and in particular, uses a heat pump to raise the temperature of groundwater and utilize it. This invention relates to waterless snow melting equipment for melting snowfall and snow accumulation.

[Conventional technology]

Conventionally, waterless snow removal equipment was developed in 1973.
As described in No. 25945 or Utility Model Publication No. 57-31304, heat dissipation pipes are buried under the road surface, and underground water at a temperature of approximately 14°C pumped from wells is directly sent into the heat dissipation pipes to reduce snowfall and It was melting snow.

In addition, as in the device described in Japanese Patent Publication No. 51-12337, groundwater in an aquifer is recirculated through a pumping well, heat exchanger, injection well, and aquifer, and approximately one When cold water at ℃ passes through a heat exchanger,
It has been known to melt snow falling on the road surface by spraying water from a snow melting nozzle exposed on the road surface as snow melting water heated by the groundwater at about 14°C.

In addition, as in the device described in JP-A No. 57-180705, removed snow and ice are collected in a tank and sent to a heat exchanger inside the tank using antifreeze heated in a boiler as a medium. There is a known device that brings water into direct or indirect contact with water to promote a change in state, and then turns it into water and removes it.

[Problem to be solved by the invention]

However, in the waterless snow removal device described in the above-mentioned Utility Model Publication No. 45-25945 or Utility Model Publication No. 57-31304,
If the water flow is not continued even after the snow that falls on the road has melted, there is a risk that the water in the heat dissipation pipes will freeze and the heat dissipation pipes will burst, resulting in high maintenance costs.

In addition, if water flow is stopped for a long time due to failure of the pump that sends underground water to the heat radiation pipes, the water in the pipes may freeze and the heat radiation pipes may burst. Ta.

In addition, the device described in the above-mentioned Japanese Patent Publication No. 12337/1980 is a device that uses cold river water of approximately 1°C to pass through a heat exchanger, which is heated by groundwater of approximately 14°C, and generates snow melting water that is exposed on the road surface as water for snow melting. Sprinkled with water from cheats,
This device melts the snow that falls on the road surface, but since the heat exchanger uses the heat of the groundwater to warm the cold river water, the temperature of the heated water is too low, so a large amount of groundwater is required to melt snow by spraying water. In addition, if the water flow is stopped due to the water temperature being too low, the water in the snow melting pipes and snow melting nozzles will immediately freeze, causing the pipes and nozzles to burst, so it is necessary to temporarily stop the flow of heated water. They have the disadvantage that they cannot be stopped even if the system is closed, and in order to prevent freezing, it is necessary to constantly supply underground water, resulting in huge maintenance costs.

Furthermore, since the device described in JP-A No. 57-180705 heats antifreeze directly in a boiler, it has poor thermal efficiency, and although this device can melt the ice and snow removed in the tank, However, there is a problem in that it is not possible to directly melt the snow that falls on the road evenly.

The present invention was completed in view of the above circumstances, and has a structure that prevents the radiating pipes from bursting due to freezing of water in the radiating pipes under the road surface, and also raises the temperature of the underground water using a heat pump. The object of the present invention is to provide a waterless snow melting device that can heat antifreeze to a low constant temperature and efficiently melt snow using heat possessed by groundwater.

[Means to solve the problem]

In order to achieve the above object, the present invention installs a water pump equipped with a water pump in a well, connects the water pipe to a drain pipe via a heat pump, and connects the water pipe to the inside of a heat radiation pipe buried in the road surface. In the non-sprinkling snow melting device, which has a circulation pipe filled with antifreeze and connecting the heat radiation pipe and the heat pump via a circulation pump, the heat of groundwater pumped from the well is heated in the heat pump, and the heat pump is heated. The heat pump is characterized in that the heated heat is transferred to the antifreeze inside the circulation pipe within the heat pump.

[Effect]

Next, the operation of the present invention will be explained.

Groundwater at a temperature of approximately 14℃ is pumped up from a well and used as a heat source for non-sprinkling snow melting. After the heat is used, it is drained. Meanwhile, a heat pump is used to raise the temperature of the groundwater inside the heat pump. The increased heat heats the antifreeze inside the circulation pipe on the side of the waterless snow melting heat dissipation pipe. The antifreeze thus warmed is circulated through the non-sprinkling snow melting heat dissipation pipe only when necessary for snow melting or road surface freezing prevention, thereby easily and uniformly melting snowfall or accumulated snow on the road surface. Furthermore, after non-sprinkling snow removal and road surface ice prevention have been completed, heat dissipation pipes will not burst due to freezing even if the operation of the water pump, heat pump, and circulation pump is stopped.

〔Example〕

Hereinafter, one embodiment of the present invention will be described with reference to the drawings.

FIG. 1 shows an embodiment of the present invention, in which groundwater is pumped up from a pumping well 1 through a pumping pipe 4 using a pumping pump 2, and is drained via a heat pump 5 through a drain pipe 4'. A flow path is formed.

On the other hand, heat dissipation pipes 8 buried in the non-watering snow-melting road surface 7
The interior of the tank is filled with antifreeze, which is circulated by a circulation pump 6 via a heat pump 5. Therefore, when the antifreeze liquid passes through the heat pump 5, it is given heat and is heated to a constant low temperature of about 25°C, and flows through the heat radiation pipe 8, so that the antifreeze liquid in the heat radiation pipe 8 can be used to melt water on the non-sprinkling snow-melting road surface. 7. Snow that falls on the ground can be melted easily and uniformly.

Since the present embodiment is configured in this way, even if the circulation pump 6 is stopped after the snow on the water-less snow removal road surface 7 has melted, the antifreeze in the heat dissipation pipe 8 will not freeze. Rupture can be prevented. Therefore, in the waterless snow removal system of this embodiment, even if the circulation pump that circulates antifreeze is stopped after melting the snow that falls on the waterless snow removal road surface, the water in the heat dissipation pipes will freeze and the pipes will be damaged. Not only can bursts be prevented, but costs can also be saved by stopping circulation pumps, water pumps, and heat pumps.

〔Effect of the invention〕

As described above, according to the present invention, groundwater is pumped up and used as a heat source for waterless snow melting, and after the heat is used, it is drained, so only one well needs to be dug, which is economically advantageous, and the flow path of groundwater is reduced. Since a heat pump is interposed between the heat sink and the non-water snow melting heat radiation pipe buried under the road surface, it is possible to raise the temperature of the antifreeze to a low constant temperature using the heat of the groundwater, and the heated antifreeze can be circulated through the heat dissipation pipe for waterless snow removal, making it extremely easy to remove snow that falls on the waterless snow removal road surface.
And it can be melted uniformly.

In addition, once the road surface is dry, even if the antifreeze circulation is stopped, the road surface will not freeze, and the inside of the heat dissipation pipe will not freeze either, making it safe.In addition, the circulation pump, water pump, and heat pump can be stopped. This makes it possible to eliminate snow without watering with low maintenance costs.

[Brief explanation of drawings]

FIG. 1 is an explanatory diagram showing one embodiment of the present invention. 1... Pumping well, 2... Pumping pump, 4... Pumping pipe,
4'...Drain pipe, 5...Heat pump, 6...Circulation pump, 7...Waterless snow removal road surface, 8...Radiation pipe.

Claims (1)

[Claims] 1 Install a water pipe equipped with a water pump in the well,
The pumping pipe was connected to a drainage pipe via a heat pump, and the inside of the heat radiation pipe buried in the road surface was filled with antifreeze, thereby forming a circulation pipe connecting the heat radiation pipe and the heat pump via a circulation pump. The waterless snow removal device is configured to raise the temperature of groundwater pumped from the well in the heat pump, and to transmit this raised heat to the antifreeze inside the circulation pipe in the heat pump. Features: Waterless snow melting equipment.