JPH0124520Y2 - - Google Patents

Description

[Detailed description of the invention] [Technical field] The present invention relates to a tank for a heat exchange device, and in particular, the present invention relates to a tank for a heat exchange device, and in particular, a plurality of heat exchange pipes buried underground have heat medium inlet and outlet ends converging on the ground surface and tips radiating underground. The present invention relates to a tank for a heat exchange device used at a connecting portion between a heat medium circulation pipe and the heat exchange pipe when constructed for the purpose of the present invention.

[Prior art]

When heating a building by pumping up geothermal heat using a heat pump using a heat exchange device, it is common to arrange a large number of heat exchange pipes as described above.

FIG. 1 is a diagram schematically showing an example of the conventional configuration of the heat exchange device as described above, and 1 is a type of heat exchanger having a diameter of 3 to 4 cm and a length of 5 to 4 cm, the tip of which is radially buried in the ground. Heat exchange pipe of about 10m, 2 has a diameter of 6 to 10
cm, a header with a length of about 1 m, 3 is a connecting pipe, 4 is a heat collector, 5 is a circulation pump, 6 is a compressor, 7 is an expansion valve, 8 is a radiator, and 9 is piping. In the above configuration, on the one hand, the Freon gas compressed by the compressor 6 radiates heat into the building from the radiator 8 and is liquefied, and the cool air expanded by the expansion valve 7 is sent to the heat collector 4, and on the other hand, the Freon gas is circulated. The heat collector 4 is activated by the operation of the pump 5.
The heat medium (brine) cooled in is heated to a temperature close to the underground temperature in the heat exchange pipe 1,
The cold air from the heat pump system mentioned above is warmed in the heat collector 4, and the cooled air itself is cooled and sent to the heat exchange pipe 1 again.

As described above, geothermal heat is pumped up to heat the inside of the building, but a particular problem with this device is that in the system where the heat medium circulates, multiple single heat medium circulation pipes 9 are connected above the ground. This is the structure of the section 10 that distributes or converges into the heat exchange pipe 1. In other words, in this type of device, when embedding a heat exchange pipe, it is difficult to accurately determine the position and direction of the heat medium inlet and outlet, so in the conventional device, two headers 2 and A large number of connecting pipes 3 are used. In addition, heat exchange pipe 1 in the figure
is 3, but in a general house there are 8 to 8
It is common to use 20 pieces.

FIG. 2 is a sectional view showing details of the distributing and concentrating portion 10 in FIG. 1, and all pipe connections are screwed. As you can see from this second figure,
Not only does the heat loss of the two headers 2 and the large number of connecting pipes 3 become large, but the connection of the pipes becomes complicated, and the flow resistance of the heat medium becomes large.

[Purpose of invention]

Therefore, an object of the present invention is to provide a tank for a heat exchange device that has a simple structure and has low heat loss.

[Structure of the idea]

According to the present invention, in a heat exchange device configured with a plurality of heat exchange pipes buried underground, the heat medium inlet/output ends are gathered at the ground surface, and the tips are oriented radially into the ground. A heat medium transfer mechanism used at the connection part of the heat exchange pipe, consisting of an inner tank and an outer tank arranged in double layers,
One of the plurality of outlets and inlets at the heat medium inlet/output end is connected to the inner tank, and the other outlet is connected to the outer tank, and the heat medium circulation A tank for a heat exchange device is obtained, characterized in that one end of the pipe for use is connected to the outer tank, and the other end passes through the outer tank and is connected to the inner tank.

〔Example〕

FIG. 3 is a sectional view showing the structure of an embodiment of the present invention. In Fig. 2, 11 is a heat exchange pipe;
12 is the outer pipe, 13 is the inner pipe, 14 is the outer tank made of a flexible material such as a rubber molded product, 1
5 is the lid, 16 is a fastener made of a pipe band, screws, and nuts, 17 is the inner tank, 18 is the lid, 19 is the same fastener as 16, and 20 is an end that penetrates the outer tank 14. The heat medium circulation pipe 20' connects to the inner tank 17 with its end connected to the outer tank 1.
4 is a heat medium circulation pipe connected to the tank, and 21 is a branch connection end of the tank. Further, 22 is an outer wall or a tank surrounding member, and 23 is a heat insulating material. In the configuration shown in Fig. 2, the cooled heat medium sent from the piping 20 once enters the inner tank 17, and from there it is heated by five pipes (three of which are shown in the figure) arranged radially. The heat medium is distributed to the inner pipe 12 of the exchange pipe 11 and heated by geothermal heat while flowing inside the outer pipe 11 which is turned back at the tip, and the heat medium, which has reached a temperature close to the underground temperature, collects from the three outer pipes into the outer tank 14. The water is sent from the pipe 20' to a circulation pump (corresponding to 5 in FIG. 1), which is not shown.

As can be easily understood from the above explanation, in the double tank that functions as a header, the inner tank 17 is housed inside the outer tank 14, so the heat dissipation surface of the tank as a whole is small. Since there is no connecting pipe 3 used in conventional equipment, there is no heat loss in this part, and the outer pipe 1 of the heat exchange pipe
2 and the inner pipe 13 are extremely simple, simply by tightening and fixing the branch connecting end 21 of the outer tank 14 and the branch connecting end 21' of the inner tank 17 with the fasteners 16 and 19, respectively. It's structured well. In addition, this stopper 16, 19
The stopper may be of the same type as the stopper used to connect city gas pipes and appliances, and is inexpensive and easy to stop.

To form the above device, first embed the heat exchange pipe 11 in a predetermined position and orientation, deform the flexible outer tank 14 to temporarily recess the branch connection end 21, and in that state, the tank body is roughly recessed. After placing it in the fixed position, return the branch connection end 21 to its original position and fit it into the heat exchange pipe outer tube 12, and then tighten the stopper 16 that was temporarily fitted to the outer tube in advance at the proper position as shown in the figure. Fix it. Next, the inner tank 17 and the inner heat exchange pipe 13 are connected with the stopper 19 in the same manner. After this, pipe 20 and inner tank 1
7, connect the outer tank 14 and the piping 20',
Furthermore, lids 18 and 15 are attached to the inner and outer tank bodies, respectively. In this case, the outer tank 14 needs to be quite flexible, so the entire distribution and concentration section 10 is housed in a tank surrounding material 22, such as an outer wall made of iron plate, plywood, or block, and a heat insulating material 23, such as Styrofoam, is filled in the middle. The shape of the tank is maintained.

FIG. 4 is a cross-sectional view showing details of an example of a connection part between the outer heat exchange pipe and the outer tank, which is different from that shown in FIG. It is formed integrally with the main body 14' and is deformable to accommodate positional errors. In this case, the end of the outer tube 12 should be placed away from the outer tank main body at the specified position, and when installing it, the bellows part 25 should be contracted once, aligned with the outer tube 12 of the heat exchange pipe, and then returned to its original position. Stretch it out so that it covers the outer tube, and then tighten the stopper 16. The same applies to the inner tank. According to this structure, the main part of the tank does not need to be deformed, so handling is easy.

As explained above, the tank for heat exchange equipment according to the present invention has low heat loss and flow resistance, and is easy to form. It is possible to respond.

[Brief explanation of drawings]

Fig. 1 is a diagram schematically showing an example of a heat exchange device using a conventional heat exchange device tank, Fig. 2 is a sectional view showing an example of the details of the distribution and concentration part in Fig. 1, and Fig. 3 FIG. 4 is a cross-sectional view showing the structure of an embodiment of the present invention, and FIG. 4 is a cross-sectional view showing another example of the structure of the connecting portion between the outer heat exchange pipe and the outer tank. Explanation of symbols: 11 is the heat exchange pipe, 12 is its outer pipe, 13 is the inner pipe, 14 is the outer tank, 15
1 is the lid, 16 is the stopper, 17 is the inner tank, 1
Reference numeral 8 represents the lid portion, 19 represents the stopper, 20 and 20' represent piping for heat medium circulation, and 25 represents the bellows portion.

Claims (1)

[Scope of utility model registration request] In a heat exchange device configured with a plurality of heat exchange pipes buried underground, the heat medium inlet and outlet ends converging on the ground surface, and the tips pointing radially underground, the connection between the heat medium circulation piping and the heat exchange pipes. It is a heat medium exchange mechanism used in the heating medium section, and consists of an inner tank and an outer tank that are arranged in a double layer, inside and outside, and the inner tank has one of a plurality of outlets and inlets at the heat medium inlet/outlet end. mouths are connected together,
The other port is connected to the outer tank together,
A tank for a heat exchange device, wherein one end of the heat medium circulation piping is connected to the outer tank, and the other end passes through the outer tank and is connected to the inner tank.