JPH0641066Y2 - 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 melts.

[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. 4 and 5 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 cold storage body bundle 4 suspends a plurality of cold storage bodies 6 from the upper end portion of a floating body 5 formed of a rod or a hollow cylinder or the like that produces buoyancy in the antifreeze liquid 2, and further connects the plurality of cool storage bodies 6 to a net 7 Covered by. An annular spacer 8 is fitted to 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 portion of a soft tube 9 made of a soft synthetic resin such as polyethylene or polypropylene, and a liquid 10 such as water is sealed inside the soft storage tube 9, and further 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. 5, the antifreeze liquid 2 is supplied through the supply pipe 14 from the cooling means 13 such as a refrigerator 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 1 a, it is discharged from the discharge pipe 15 and returned to the cooling means 13. 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 inexpensive 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 for cooling in the daytime, etc. 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, since it is not necessary to support or suspend each regenerator bundle in the tank body, the structure of the tank body is simplified, and there is no need to modify the existing tank body in particular. Therefore, there is an advantage 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 into the heat storage tank body 1a is the heat storage tank body 1a.
In the process, the temperature is raised in the process of cooling the regenerator 6, and the specific gravity is reduced. Therefore, as shown in FIG. 5, 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.
4 and the discharge pipe 15 are arranged so that the antifreeze liquid 2 supplied from below the heat storage tank body 1a is above the heat storage tank body 1a.
A flow of being discharged from 5 is formed. 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, since the antifreeze liquid 2 above the discharge pipe 15 has a high temperature and a small specific gravity, the antifreeze liquid 2 in this portion is less likely to flow into the discharge pipe 15, and the retention portion A where the flow of the antifreeze liquid 2 is not formed is formed. When the stagnant portion is generated near the liquid surface of the antifreeze liquid 2 in this way, there is a problem that the heat storage of the cool storage body 6 in the vicinity thereof 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, according to the present invention, a supply pipe for supplying an antifreeze liquid from a cooling means to a heat storage tank body and the heat storage tank body to the cooling means. A discharge pipe for feeding an antifreeze liquid is provided in the heat storage tank body, and a regenerator containing a liquid is immersed in the antifreeze liquid circulating between the heat storage tank body and the cooling means via the supply pipe and the discharge pipe. In the heat storage tank
In the heat storage tank body, an antifreeze liquid inlet is provided at an end near the liquid surface of the antifreeze liquid, and an outer pipe having the other end opening into the antifreeze liquid is provided, and the supply port of the supply pipe is provided in the outer pipe. Provided is a heat storage tank that opens downward in a substantially vertical direction. Further, according to this invention, the inflow port is a hole formed from the liquid surface side end of the outer pipe to a position near the supply port of the supply pipe, and the diameter of the hole is large in the liquid surface direction. A growing heat storage tank is provided. In addition, according to this invention, the inflow port is a slit formed from the liquid surface side end portion of the outer pipe to a position near the supply port of the supply pipe, and the width of the slit is large in the liquid surface side direction. A growing heat storage tank is provided.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the present invention will be described with reference to the drawings. 1 and 2 are explanatory views of a heat storage tank according to one embodiment of the present invention. In FIG. 1, a supply pipe 14 is provided in the heat storage tank main body 1a, and a discharge pipe 15 is attached to the upper portion. 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 heat storage tank body 1
In the antifreeze liquid 2 in a, the regenerator 6 is suspended with its longitudinal direction substantially aligned with the vertical direction. As shown in the figure, an outer pipe 16 is provided in the heat storage tank body 1a. The outer pipe 16 has an inflow port 17 for the antifreeze liquid at the end near the liquid surface of the antifreeze liquid 2. The other end of the outer tube is opened in the antifreeze liquid 2 near the bottom of the heat storage tank body 1a as shown in the figure. In the heat storage tank of this embodiment, the supply port 18 of the supply pipe 14 is opened inside the outer pipe 16. Therefore, in the heat storage tank of this embodiment, the supply pipe 14
The antifreeze liquid 2 is supplied into the heat storage tank main body 1a from the supply port 18 through the outer pipe 16, and the flow formed by the antifreeze liquid 2 into the outer pipe 16 causes the antifreeze liquid 2 in the vicinity of the liquid surface.
Flows into the antifreeze liquid 2 in the heat storage tank main body 1a, and the regenerator 6 in the antifreeze liquid 2 is efficiently cooled as a whole. Further, as shown in FIG. It is formed in a tubular shape and is inserted into the outer tube 16 from the upper portion of the outer tube 16, and the supply port 18 is opened in the outer tube 16 in a substantially vertical downward direction. By doing so, the flow area of the antifreeze liquid 2 from the upper portion of the outer pipe 16 to the supply port 18 is narrowed as compared with the flow area of the lower portion from the supply port 18, and as a result, the antifreeze liquid 2 in the outer pipe 16 is prevented. The flow is promoted, and the antifreeze liquid near the liquid surface 2
Is efficiently flowed into the outer pipe 16.

As shown in FIG. 2, the inflow port 17 of the outer tube 16 is formed with a large number of holes 19 from the position of the end of the antifreeze liquid 2 on the liquid surface side to the position near the supply port 18. As shown in the figure, the diameter of the hole 18 is set so as to gradually increase from the position near the supply port 18 toward the liquid level side end position, and at the liquid level side end position. It will be the maximum. In the above embodiment, the diameter of the hole 19 is the same as that of the supply port 1.
8 is set to gradually increase from the position near the liquid surface side toward the end position on the liquid surface side, and is maximized at the position on the liquid surface side end. A great resistance is added to the flow of the antifreeze liquid 2 into the inside,
On the contrary, at the liquid surface side end position, the antifreeze liquid easily flows into the outer pipe 16. As a result, a smooth flow is formed in the outer pipe 16 as a whole, and the inflow of the antifreeze liquid into the outer pipe 16 is not delayed at the liquid surface side end position.

FIG. 3 shows another embodiment. That is, in this embodiment, the outer pipe 16 is formed with a plurality of slits 20 as an inlet for the antifreeze liquid 2 from the position on the liquid surface side to the position in the vicinity of the supply port 18. The width of the slit 20 is set so as to gradually increase from the position near the supply port 18 toward the liquid level side end position, and is maximized at the liquid level side end position. A large resistance is added to the inflow of the antifreeze liquid 2 into the outer pipe 16 at the position near the mouth 18, and conversely, the inflow of the antifreeze liquid into the outer pipe 16 is facilitated at the liquid surface side end position. As a result, a smooth flow is formed in the outer pipe 16 as a whole, and the inflow of the antifreeze liquid 2 into the outer pipe 16 is not delayed at the liquid surface side end position.

[0009]

As described above, according to the heat storage tank of the present invention, the supply pipe for supplying the antifreeze liquid from the cooling means to the heat storage tank body and the discharge pipe for supplying the antifreeze liquid from the heat storage tank body to the cooling means are provided. A heat storage tank in which a cold storage body containing a liquid is immersed in an antifreeze liquid provided in the heat storage tank main body and circulating between the heat storage tank main body and the cooling means via the supply pipe and the discharge pipe, In the main body, an antifreeze liquid inlet is provided at the end near the liquid surface of the antifreeze liquid, and an outer pipe having the other end opening into the antifreeze liquid is provided, and the supply port of the supply pipe is opened in the outer pipe. Therefore, the antifreeze liquid is supplied from the supply port of the supply pipe through the outer pipe into the heat storage tank main body, and the flow formed thereby causes the antifreeze near the liquid surface to flow into the outer pipe from the inlet, and The accumulation of antifreeze in the Ku, there is an effect that cold storage body in the antifreeze is generally efficiently cooled. Further, according to the heat storage tank of the present invention, the inflow port is a slit formed from the liquid surface side end of the outer pipe to a position near the supply port of the supply pipe, and the width of the slit is on the liquid surface side. Since it becomes large in the direction, a large resistance is added to the flow of the antifreeze liquid into the outer pipe at the position near the supply port, and conversely, the flow of the antifreeze liquid into the outer pipe at the end position on the liquid level side. As a result of the ease, there is an effect that a smooth flow is formed in the outer pipe as a whole, and the flow of the antifreeze liquid into the outer pipe is not delayed at the liquid surface side end position. In addition, according to the heat storage tank of the present invention, the inlet is a hole formed from the liquid surface side end of the outer pipe to a position near the supply port of the supply pipe, and the diameter of the hole is the liquid surface side. Since it was designed to become larger in the direction, a large resistance is added to the flow of the antifreeze liquid into the outer pipe in the vicinity of the supply port as in the case where the slit is provided, and conversely at the liquid surface side end position. As a result of facilitating the inflow of the antifreeze liquid into the outer pipe, a smooth flow is formed in the outer pipe as a whole, and the effect that there is no delay in the inflow of the antifreeze liquid into the outer pipe at the liquid surface side end position is achieved. There is.

[Brief description of drawings]

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

FIG. 2 is a partially enlarged perspective view of FIG.

FIG. 3 is a partial perspective view of another embodiment of the present invention.

FIG. 4 is a partially enlarged view of a conventional heat storage tank.

FIG. 5 is an overall cross-sectional schematic view of a conventional heat storage tank.

[Explanation of sign]

 13 Cooling Means 1a Heat Storage Tank Main Body 2 Antifreeze Liquid 14 Supply Pipe 15 Discharge Pipe 10 Liquid 6 Cold Storage Body 1 Heat Storage Tank 16 Outer Pipe 18 Supply Port 19 Hole 20 Slit

Claims (3)

[Scope of utility model registration request] 1. A supply pipe for supplying an antifreeze liquid from a cooling means to the heat storage tank main body and a discharge pipe for supplying an antifreeze liquid from the heat storage tank main body to the cooling means are provided in the heat storage tank main body, and the heat storage tank main body and the cooling In a heat storage tank in which a regenerator containing a liquid is immersed in an antifreeze liquid that circulates between the means and the supply pipe and the discharge pipe, in the heat storage tank body, at the end near the liquid surface of the antifreeze liquid. An outer tube having an inflow port for the antifreeze liquid and having the other end opening to the bottom of the heat storage tank in the antifreeze liquid is provided, and the supply port of the supply pipe is opened in the outer pipe substantially vertically downward. And a heat storage tank. 2. The inflow port is a hole formed from the liquid surface side end of the outer pipe to a position near the supply port of the supply pipe, and the diameter of the hole is large in the liquid surface side direction. The heat storage tank according to claim 1, characterized in that 3. The inflow port is a slit formed from the liquid surface side end of the outer pipe to a position near the supply port of the supply pipe, and the width of the slit increases in the liquid surface side direction. The heat storage tank according to claim 1, wherein the heat storage tank is stored.