JP2511701Y2 - Heat storage tank - Google Patents

Description

[Detailed description of the device]

[0001]

[Industrial application] This invention operates a refrigerator using inexpensive electric power at night, and freezes the liquid in the regenerator with the antifreeze liquid cooled by the refrigerator to store the heat as latent heat of the frozen body. The present invention relates to a heat storage tank such as a heat storage system that is used for cooling in the daytime and the like by using the cold heat when the frozen body is melted.

[0002]

2. Description of the Related Art Conventionally, an ice heat storage tank has been used for the purpose of accumulating cold heat using inexpensive nighttime electric power or the like, and as such a conventional ice heat storage tank, there is JP-A-59-38.
And the one disclosed in Japanese Utility Model Publication No. 535/1988
There is one disclosed in Japanese Patent No. However, such a conventional ice heat storage tank has various problems such as high manufacturing cost and poor heat transfer efficiency due to complicated structure,
For the purpose of solving the problem in the conventional ice heat storage tank, the present applicant can apply it to the existing heat storage tank main body without any modification in Japanese Patent Application No. 2-184037, and can transfer the same. We proposed an inexpensive ice storage tank with good thermal performance. 6 and 7 show an ice heat storage tank previously proposed by the present applicant in this Japanese Patent Application No. 2-184037. In the figure, in the heat storage tank main body 1a of the heat storage tank 1, an antifreeze liquid 2 made of, for example, ethylene glycol, propylene glycol, calcium chloride or the like is supplied and a space portion 3 is formed above. There is. A plurality of cool storage body bundles 4 are charged into the tank body 1a, and the charged cool storage body bundles 4 are floated in the antifreeze liquid 2 in the tank body 1a while maintaining a substantially vertical posture. The regenerator bundle 4 suspends a plurality of regenerators 6 from the upper end of a floating body 5 formed of a rod or a hollow cylinder that produces buoyancy in the antifreeze liquid 2, and further connects the plurality of regenerators 6 to a net 7 Covered by. An annular spacer 8 is fitted on the upper part of the cool storage body bundle 4 as needed, and the space between the cool storage body bundles 4 floating in the tank body 1a is secured by the spacer 8. .

The cool storage body 6 seals the lower end of a soft tube 9 made of a soft synthetic resin such as polyethylene or polypropylene, and seals a liquid 10 such as water therein, and further serves as a weight body. After the granular material 11 is charged, a soft tu
The upper end of the sleeve 9 is sealed. The amount of liquid such as water sealed in the soft tube 9 is adjusted so that the flat portion 12 is formed at the upper end of the soft tube 9.
As shown in FIG. 7, the antifreeze liquid 2 is supplied through the supply pipe 14 from the cooling means 13 such as a refrigerator that is operated by using inexpensive electric power at night in the heat storage tank body 1a, and the supplied antifreeze liquid 2 is After cooling the regenerator 4 in the heat storage tank body 1a, it is discharged from the discharge pipe 15 and returned to the cooling means. In this way, the antifreeze liquid 2 circulates between the heat storage tank body 1a and the cooling means 13, and the liquid in the regenerator 4 is frozen in the process. In this way, energy such as cheap electric power at night is stored as latent heat of the frozen body obtained by freezing the liquid in the cool storage body, and the cold heat when the frozen body is melted is used to cool the daytime To use. According to the ice heat storage tank configured as described above, since each cold storage body bundle floats in a substantially vertical posture, the cold storage body constituting the cold storage body bundle is not crushed, and the circulation of the antifreeze liquid is prevented. Since it is possible to secure a gap for, it is possible to obtain good heat transfer performance. Furthermore, supporting each regenerator bundle on the tank body with columns,
Since there is no need to suspend the structure, the structure of the tank main body is simplified, and there is no need for any special modification to convert the existing tank main body, which is advantageous in that it can be manufactured at low cost.

[0004]

However, in the ice heat storage tank proposed by the present applicant in the previous application, the supply pipe 1
There was the following problem in the flow path in the heat storage tank main body 1a of the antifreeze liquid 2 which is supplied into the heat storage tank main body 1a via 4 and discharged from the discharge pipe 15. The antifreeze liquid 2 supplied from the cooling means 13 into the heat storage tank main body 1a rises in temperature in the process of cooling the regenerator 6 in the heat storage tank main body 1a, and the specific gravity decreases. Therefore, as shown in FIG. 7, the supply pipe 14 opens below the heat storage tank main body 1a, whereas the discharge pipe 15 opens above the heat storage tank main body 1a. The antifreeze liquid 2 supplied from below the heat storage tank main body 1a is discharged from the discharge pipe 15 above the heat storage tank main body 1a. Therefore, the antifreeze liquid 2 easily forms a flow in the heat storage tank body 1a in the vertical direction of the heat storage tank body 1a and in the lower lateral direction of the heat storage tank body 1a. However, it becomes difficult to form a flow near the upper liquid surface of the heat storage tank main body 1a, and a very slow portion A of the antifreeze liquid 2 flows. Further, as the part A is formed, the retention part B is formed at a position far from the discharge pipe port. Therefore, there is a problem that the heat storage of the regenerator 6 in the vicinity of the retention section B is partially insufficient and the efficiency of the heat storage tank as a whole is deteriorated.

[0005]

According to the present invention, in order to solve the above problems in the prior art, a regenerator containing a liquid is immersed in an antifreeze liquid circulating between a heat storage tank body and a cooling means. In the above heat storage tank, a heat storage tank is provided in which a rod-shaped body is suspended between the cold storage bodies to form a flow path for an antifreeze liquid. Further, according to this invention, the rod-shaped body is composed of an upper rod-shaped body and a lower rod-shaped body, the upper rod-shaped body has a specific gravity smaller than that of the antifreeze liquid, and the lower rod-shaped body is larger than the antifreeze liquid. A heat storage tank having a specific gravity is provided.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, a heat storage tank of an embodiment of the present invention will be described with reference to the drawings. 1 and 2 and 3 show a heat storage tank according to an embodiment of the present invention. In the figure, the heat storage tank main body 1a is provided with a supply pipe 14 in the lower part and a discharge pipe 15 in the upper part. Further, the antifreeze liquid 2 is supplied from the supply pipe 14 into the heat storage tank main body 1a while the antifreeze liquid 2 is discharged from the discharge pipe 15, and the antifreeze liquid 2 is circulated between the cooling means 13 such as a refrigerator and the heat storage tank main body 1a. Be punished. Furthermore, the regenerator 6 is suspended in the antifreeze liquid 2 in the heat storage tank body 1a with its longitudinal direction substantially aligned with the vertical direction. As shown in the figure, a rod-shaped body 16 is floated in a horizontally extended state on the liquid surface of the antifreeze liquid 2 between the regenerators 6 that are floated in the antifreeze liquid 2. This rod 16
Is made of a material having a specific gravity smaller than that of the antifreeze liquid 2. In the illustrated embodiment, the rod-shaped body 16 is the regenerator 6
They are arranged substantially parallel to each other with a certain space therebetween. Therefore, according to the heat storage tank of this embodiment, since the rod-shaped body 16 is arranged in the portion A where the flow of the antifreeze liquid 2 is very slow,
The upper part and the lower part of the rod-shaped body 16 serve as a flow path of the antifreeze liquid 2 and the retention part B of the antifreeze liquid 2 is eliminated, and the reflux of the antifreeze liquid 2 between the refrigerator (not shown) and the heat storage tank body 1a is promoted.

4 and 5 show a heat storage tank according to another embodiment of the present invention. In the heat storage tank of this embodiment, as shown in the figure, an upper rod-shaped body 16a and a lower rod-shaped body 16b suspended from the upper rod-shaped body 16a by a string 17 are provided between the regenerator bodies 6 suspended in the antifreeze liquid 2. And are made to float. The lower rod-shaped body 16b is made of a material having a larger specific gravity than the antifreeze liquid 2, and is suspended in the antifreeze liquid 2 while being suspended from the upper rod-shaped body 16a. In other words, the buoyancy of the upper bar 16a causes the lower bar 16 to move.
Since the sedimentation of b is prevented, the lower rod-shaped body 16b is floated at a certain depth position in the antifreeze liquid 2. Therefore, according to the heat storage tank of this embodiment, not only the flow path of the antifreezing liquid 2 is formed by the upper rod-shaped body 16a, but also the lower rod-shaped body 1 is formed.
Since 6b also forms the flow path of the antifreeze liquid 2, the reflux of the antifreeze liquid 2 is further promoted. The length of the string 17 is appropriately set so that the flow path of the antifreeze liquid 2 is formed most efficiently as a whole in the state where the lower rod-shaped body 16b is suspended from the upper rod-shaped body 16a.

[0008]

As described above, according to the heat storage tank of the present invention, in the heat storage tank in which the cold storage body containing the liquid is immersed in the antifreezing liquid circulating between the heat storage tank body and the cooling means, Since the rod-shaped body is floated between them to form the flow path of the antifreeze liquid, it is possible to promote the reflux of the antifreeze liquid between the refrigerator and the heat storage tank, and improve the cooling efficiency for the regenerator in the heat storage tank. Further, according to this invention, the rod-shaped body is composed of an upper rod-shaped body and a lower rod-shaped body, the upper rod-shaped body has a specific gravity smaller than that of the antifreeze liquid, and the lower rod-shaped body is larger than the antifreeze liquid. Since it has a specific gravity,
Further promote the reflux of the antifreeze liquid between the refrigerator and the heat storage tank,
Further, the cooling efficiency for the regenerator in the heat storage tank can be improved.

[Brief description of drawings]

FIG. 1 is a schematic sectional view of a heat storage body according to an embodiment of the present invention.

FIG. 2 is a sectional view taken along the line II-II in FIG.

FIG. 3 is a partially enlarged view of FIG.

FIG. 4 is a schematic cross-sectional view of another embodiment of the present invention.

5 is a partially enlarged view of FIG.

FIG. 6 is a partially enlarged view of a conventional heat storage tank.

FIG. 7 is an overall cross-sectional schematic diagram of a conventional heat storage tank.

[Description of sign]

 10 liquid 6 regenerator 1a heat storage tank main body 13 cooling means 2 antifreeze 1 heat storage tank 16, 16a, 16b rod-shaped body

Claims (2)

(57) [Scope of utility model registration request] 1. A heat storage tank in which a cold storage body containing a liquid is immersed in an antifreeze solution circulating between a heat storage tank body and a cooling means, and a rod-shaped body is suspended between the cold storage bodies to form a flow path of the antifreeze solution. A heat storage tank characterized by being formed. 2. The rod-shaped body is composed of an upper rod-shaped body and a lower rod-shaped body, the upper rod-shaped body has a specific gravity smaller than that of the antifreeze liquid, and the lower rod-shaped body has a specific gravity larger than that of the antifreeze liquid. The heat storage tank according to claim 1, wherein: