JP2528737Y2 - Heat exchange system using foundation pile - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat exchange system using a foundation pile of a building.

[0002]

2. Description of the Related Art Underground and groundwater have a small temperature change throughout the year, so that there is a temperature difference between the underground and groundwater, which varies greatly according to the four seasons. In other words, the underground temperature is lower than the temperature in summer and warm in winter, and by exchanging heat between the ground and the ground in both seasons,
Cooling and heating costs can be reduced. Such attempts have been made for a long time, and various devices have been developed. For example, Japanese Utility Model Application Laid-Open No. 58-18818,
No. 16822, No. 58-16823, No. 58
An "air conditioner using underground temperature" according to U.S. Pat. No. 16824 and the like and an "air conditioner using underground water" according to U.S. Pat.

By the way, these devices have heat transfer tubes,
The heat transfer tube is buried substantially vertically in the ground, and heat is exchanged by flowing a liquid through the heat transfer tube. However, in order to perform air conditioning in a large building, since the heat capacity of one heat transfer tube is insufficient, a large number of heat transfer tubes must be buried, which significantly increases the construction cost. Therefore, its practical use has not yet been achieved.

[0004]

[Problems to be Solved by the Invention] As described above, the heat exchanger utilizing the temperature difference from the underground, which has been conventionally known, has the above-mentioned problems. One of the problems to be solved by the present invention is to solve the above problems,
It is an object of the present invention to provide a technology in which a foundation pile of a building is used without embedding a special heat transfer tube and a heat exchange function is given to the foundation pile. Therefore, the hollow portion of the foundation pile is filled with a heat exchange liquid such as an antifreeze solution. Leaks can lead to destruction of the groundwater environment. Another object of the present invention is to prevent the groundwater environment from being destroyed due to liquid leakage, and to quickly find a leaking foundation pile, plug it, and remove it from the heat exchange system.

[0005]

[MEANS FOR SOLVING THE PROBLEMS] If the foundation pile is buried underground and the heat exchange liquid such as antifreeze filled in the hollow part leaks, it is practically impossible to repair the leaked foundation pile. Close to. Therefore, in the present invention, in the heat exchange system composed of a plurality of foundation piles, to find a leaking foundation pile, without circulating antifreeze to the foundation pile, to remove from the heat exchange system, Gate valves are installed on the intake and distribution pipes of the foundation pile. Each of these gate valves is provided separately from the building, and is arranged in a place where the operation of the gate valve is not hindered.

[0006] A liquid leak detector is provided in the middle of the heat exchange system, and when a liquid leak occurs, it is quickly detected by the detector. However, since it is unclear from which foundation pile the liquid leaked, the gate valves provided on the individual foundation piles are sequentially closed and found. Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

[0007]

FIG. 1 shows an embodiment of the heat exchange system according to the present invention, which shows a snow melting apparatus. In FIG. 1, reference numeral 1 denotes a foundation pile, 2 denotes an intake pipe, and 3 denotes a drain pipe. An antifreeze 4 discharged from the drain pipe 3 is filled in a hollow part 5 of the foundation pile 1, and a hollow part from the intake pipe 2. The antifreeze 4 of 5 is taken in water and guided to the feed pipe 6. The feed pipe 6 is guided to a snow melting pipe 7 piped to a predetermined place, and the antifreeze 4 having circulated through the snow melting pipe 7 releases heat and is sent to a return pipe 8, and is again discharged from the discharge pipe 3 to the foundation pile 1.
Return to the hollow part 5 of FIG.

The foundation pile 1 is buried in the ground, and the antifreeze 4 in the hollow portion 5 is deprived of geothermal heat and is warmed, and the relatively warm upper portion of the antifreeze 4 is taken from the intake pipe 2, so that Of the antifreeze 4 is arranged in a pipe. Conversely, the drain pipe 3 extends to the vicinity of the bottom of the hollow portion 5, and the antifreeze, which has released heat and is relatively cold, is discharged to the bottom. The cooled antifreeze liquid takes the geothermal heat and becomes warm, convects to the upper layer, and is taken again from the intake pipe 2.

As described above, the snow melting apparatus is configured to circulate the antifreeze 4 filled in the hollow portions of the plurality of foundation piles to the snow melting pipe 7 provided at a predetermined place, and the circulation pump 10 is installed at an appropriate place. Then, the antifreeze 4 is circulated by the circulation pump 10. Then, as described above, the antifreeze 4 of the foundation pile 1 is returned from the intake pipe 2 to the feed pipe 6 and from the return pipe 8 to the foundation pile 1 through the drain pipe 3 to return to the foundation pile 1. Gate valves 11 and 12 in the middle of 3
If the gate valve 11 is closed, the antifreeze 4 cannot be taken from the foundation pile 1 if the gate valve 11 is closed. Conversely, if the gate valve 12 is closed, the antifreeze 4 cannot be returned to the base pile 1. Therefore, by closing the gate valves 11 and 12, it is possible to remove the predetermined foundation pile 1 from the snow melting system of the present invention, and the capacity is slightly reduced, but the remaining foundation pile is slightly reduced. 1, 1,... Constitute a snow melting apparatus.

In the snow melting apparatus composed of a plurality of foundation piles 1, 1,..., When the antifreeze 4 leaks from these foundation piles 1, 1,. The water level drops, and the leak is discovered. However, since it is unknown which of the foundation piles 1, 1,... Is leaking, the gate valves 11, 12 of the intake / drain pipes 2, 3 communicating with the respective foundation piles 1, 1,. To check the water leak detector 13. That is, it is clear that the gate valves 11, 12 of the individual foundation piles 1, 1,... Are sequentially closed, and a liquid leak has occurred from the foundation pile 1 in which the water level of the water leak detector 13 has been eliminated. Here, these gate valves 1
Reference numerals 1 and 12 are provided in a place where the opening and closing operations are easy to perform, and are considered so as not to hinder the liquid leakage inspection.

FIG. 2 shows another embodiment of the present invention, in which several foundation piles 1, 1...
Another gate valve 1 is provided between the feed pipe 6 and the return pipe 8.
4 and 15 are provided to facilitate the investigation of liquid leakage. That is, by closing the gate valves 14 and 15, a leaking group is found, and then the gate valves 14 and 15 are opened and the gate valves 11 and 12 of the individual foundation piles 1, 1. Close.

In the present embodiment, a snow melting apparatus has been described as an example. Conversely, in the case of a cooling apparatus, heat is collected at the bottom of the hollow portion 5 of the foundation pile 1 and water is exchanged. Discharge. That is, the intake pipe 2 becomes a drain pipe, and the drain pipe 3
It is only necessary to reverse the circulation path of the heat exchange liquid so as to function as an intake pipe. As described above, the heat exchange system of the present invention uses foundation piles, and the gate valve is provided in the middle of the intake pipe and drainage pipe connected to these foundation piles, and the following effects can be obtained. it can.

[0013]

[Effects of the Invention] The heat exchange system of the present invention uses a foundation pile of a building, in which a heat exchange liquid is put into the hollow part and circulated to a heat exchanger such as a snow melting pipe. No burial is required, and equipment costs can be reduced. Furthermore, in the present invention, since a gate valve is connected to the intake / drainage pipe of each foundation pile, even if a liquid leaks from the foundation pile, by closing the gate valve, the heat exchange liquid flows into the groundwater. Does not cause problems such as destruction of the environment. And, the gate valve and the water leak detector are installed in an easy-to-operate place, and by simply closing the gate valve, the heat exchange system can be maintained without repairing the foundation pile.

[Brief description of the drawings]

FIG. 1 shows an embodiment of a snow melting apparatus using a foundation pile according to the present invention.

FIG. 2 shows another embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Foundation pile 2 Intake pipe 3 Drain pipe 4 Antifreeze 5 Hollow part 6 Feed pipe 7 Snow melting pipe 8 Return pipe 9 Intake port 10 Circulation pump 11 Gate valve 12 Gate valve 13 Water leak detector 14 Gate valve 15 Gate valve

Claims (1)

(57) [Scope of request for utility model registration] 1. A heat exchange liquid such as antifreeze is filled in a hollow part of a foundation pile buried underground, and an intake pipe and a drain pipe are piped in the hollow part. In a heat exchange system in which return pipes are connected to pipes and the above heat exchange liquid is sent to a heat exchanger that is piped and installed at a predetermined place and circulated and returned to the foundation piles, the respective foundation piles are parallel to each other. Connected to the feed pipe and the return pipe via an intake pipe and a drain pipe, a gate valve is connected in the middle of the intake / drain pipe, and a water leak detector is provided at an appropriate position. Heat exchange system using foundation piles