JP2509948Y2 - Box-shaped shell-type aquarium with solar heat storage function - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a fish tank for use in cultivating fishery such as fish and shellfish, and more particularly to a fish tank for fish and shellfish having its own aquaculture, heat collecting and heat storage functions. .

Problems to be Solved by Conventional Techniques and Inventions Water temperature control in winter is a particularly important issue for fisheries and fisheries. Conventionally, aquaculture water is directly heated using an electric heater, or culture water heated and heated by a large boiler is supplied to each water tank to maintain the temperature.

Japanese Examined Patent Publication No. 56-41213 uses a space surrounded by a transparent outer wall and a heat receiving inner wall as a heat collecting space, and uses warmed air passing through this space to culture water through an air / water heat exchanger. The method of heating is revealed. This air heat utilization technology has the following drawbacks. First, the heat storage capacity of air itself is much smaller than that of water, and assuming a commercial-scale facility, the blast heating facility including ducts, blowers, and air / water exchangers will become large and will be of a very practical scale. Cannot be Since the transportation power (electricity bill) also increases significantly,
There is no particular advantage over using a heavy oil boiler alone.

When adding heat collection performance to the aquaculture tank, it should not be an excess facility.

In the field of cultivation business, heating of water is required for several months in winter, and the average value of total solar radiation on the horizontal surface during this period is about 2,000 kcal / m ² days. In simple calculation, if the total day heat collection efficiency is 0.6, the average amount of heat collected per day in winter is about 1,200 kcal / m ² . Assuming that the heat radiation loss from the pipes and the outer wall of the tank is 15%, the actual amount of heat that can be used is 1,020 kcal / m ² . The price per A fuel oil is 40
If it is a circle, this amount of heat corresponds to approximately 5 yen worth of A heavy oil.

That is, if 90 days in winter is considered as the heating period, the amount of money saved by collecting heat during this period is approximately 45 per square meter.
It's about 0 yen. If we introduce a heat collection facility that costs 50,000 yen per square meter, the depreciation period will be extremely long. Since there are days when solar radiation cannot be expected, independent heating equipment is originally indispensable regardless of the heat collecting equipment.

The conditions required for commercial facilities such as cultivation are the ones that are related to profitability first, so there are severe restrictions that ordinary heat collection facilities for hot water supply that are used in all seasons do not have.

All of the various aquaculture facilities with heat collection performance that have been advocated so far have a vague economic effect due to the introduction of the facility, and the economic efficiency can be satisfied, that is, the cost saving (profit) effect of the introduction is clear. Can not be a good facility.

There is a need for low-cost heat collection equipment that can contribute significantly to the management of the aquaculture industry.

An example of incorporating a heat collector in aquaculture / cultivation equipment is
In addition to the above-mentioned ones, JP-A-61-111640 and JP-B-56-
There are 43205 and JP-A-55-7304.

Means for Solving the Problems The aquaculture tank for seafood and the like according to the present invention uses a shell-shaped tank structure having a box-like shape with an upper opening, and a hem portion is formed at the edge of the opening of the tank structure. The upper part of the opening is covered with a cover made of a flexible sheet material so that the water flows down and the heat exchange surface extends in the form of a pitched roof. The top end of the cover is provided with a water supply means for supplying water to the back surface of the cover and adhering the supplied water, while a groove for collecting water for receiving water flowing down the back surface of the cover is provided. It is placed at the edge of the opening of the aquaculture tank in contact with the peripheral edge of the cover, and the collected water is supplied through a groove to a heat storage tank that can maintain the level of the stored hot water up to a position near the groove with a large hot water storage capacity. It has a feature that the hot water stored in the tank is supplied to the aquaculture space of the aquaculture tank as needed.

Example FIG. 1 and FIG. 2 show a first example of the aquarium 1 for fish and shellfish according to the present invention. This aquaculture tank 1 is made of a shell-shaped tank structure having a box shape with an open top. This tank structure is composed of a culture tank 1 and a heat storage tank 4.

A groove 3 is provided along at least a part of the opening edge 2 of the aquaculture tank. This groove communicates with the heat storage tank 4.

In the illustrated example, the groove 3 is continuously provided along the left side edge of the aquaculture tank 1, and the groove and the heat storage tank 4 communicate with each other through the weir 5. The upper part of the heat storage tank 4 can be covered with a lid 7.

The cover of the flexible sheet material is covered on the opening of the aquaculture tank 1 configured in this way, and the heat collecting surface 8 of the falling heat exchange surface stretched in the form of a sloping roof is formed. A heat carrier liquid such as fresh water or seawater is supplied to the heat collecting surface 8 by using an appropriate water supply means 9. In the illustrated example, the water supply means 9 is a porous nozzle pipe for supplying water to the back surface of the heat collecting cover,
It is composed of a straightening plate that adheres the supplied water to the back surface.

The hem portion 10 of the flexible sheet material forming the heat collecting surface 8 is
As shown in FIG. 2, for example, using the mounting bracket 11, the groove 3
It is located inside. The heat medium liquid flowing down along the back surface of the heat collecting surface 8 is collected by the groove 3.

FIG. 3 shows a second embodiment of the aquarium 1 for fish and shellfish according to the present invention. This aquaculture tank 1 also has an opening at the top, and a groove 3 is formed along the opening edge 2 of the aquaculture tank 1 having a box shape.
Is provided. This groove 3 is the aquaculture space in the aquaculture tank
It connects to the heat storage tank 4 partitioned from 1a.

In the illustrated example, the groove 3 has four side edges A of the aquarium 1,
The groove and the heat storage tank 4 are connected to each other through the weirs 5 which are continuously provided along the lines B, C, and D. The heat storage tank 4 is separated from the aquaculture space 1a by a partition wall 6. A lid 7 is attached to the upper part of the heat storage tank 4 as necessary.

The flexible sheet material is covered on the opening of the aquaculture tank 4 configured in this manner to form the heat collecting surfaces 8a, 8b, 8c, 8d. A heat carrier liquid such as fresh water or seawater is supplied to these heat collecting surfaces by using an appropriate water supply means 9 similar to that described above.
In the illustrated example, the water supply means 9 is composed of four independent injection nozzles, and these nozzles can be selectively used according to the direction of the sun.

For example, when installing the aquaculture tank with the side edge B facing south,
In the morning, the heat collecting surface 8a collects heat, and in the evening, the heat collecting surface 8c collects heat.
Heat can be collected at a, 8b, 8c and 8d. Nozzles are selected and used according to such individual heat collecting surfaces.

A hem portion 10 of flexible sheet material forming heat collecting surfaces 8a-8d.
Are arranged in the groove 3 in the same manner as in FIG. The heat medium liquid flowing down along the back surface of the heat collecting surface 8a, 8b, 8c or 8d is collected by the groove 3 and returned to the heat storage tank 4.

The aquaculture tank according to the present invention is not limited to the structure described above. There are various three-dimensional shapes of the aquaculture tank, and the installation position and capacity of the heat storage tank can be appropriately selected.

The inclined surface of the heat collecting surface does not have to be a flat surface as in the previous embodiment, and may be curved.

Fresh water, seawater, etc. of the heat carrier liquid stored in the heat storage tank
It is used during times when the water temperature in the aquaculture tank drops. For example, the heat is supplied from the heat storage tank to the aquaculture tank at an appropriate flow rate by utilizing the head difference, or heat is transferred from the heat storage tank side to the aquaculture tank side via a coil type heat exchanger installed in the heat storage tank. Can also be moved.

Effect of the Invention According to the present invention, it is possible to obtain a culture tank having a simple structure in which the combined functions of the culture, heat collection and heat storage of the culture tank are integrated into one. Due to its simple structure, it can be manufactured at low cost, maintenance is easy, and seats can be replaced quickly if necessary.

Since the heat collecting sheet is a single sheet and can be used as a consumable item, it is inexpensive. It can be used as a light-shielding sheet in warm weather when warm water is unnecessary, and can be removed when it is unnecessary.

The aquaculture tank itself has a heat storage tank, and no circulation system piping equipment is required between the aquaculture pond and the heat storage tank. When circulating water in the tank, the heat storage tank with a high water level also functions as a gravity separation settling tank, and in addition to separating solid organic matter, the partition wall of this heat storage tank has a slow heat dissipation surface for the aquaculture space. In addition, the heat collecting cover can also serve as a heat insulating cover at night.

Despite its simple structure, it has excellent heat collection / accumulation functions, has low maintenance costs, and has dramatically improved heat collection / storage performance within the current price range of aquaculture tanks. Can be achieved.

[Brief description of drawings]

FIG. 1 is a partial cross-sectional perspective view showing a culture tank according to a first embodiment of the present invention. FIG. 2 is a cross-sectional explanatory view showing an example of the positional relationship between the hem portion of the heat collecting surface and the groove of the aquaculture tank. FIG. 3 is a partial sectional perspective view showing a culture tank according to a second embodiment of the present invention. 1: Aquaculture tank, 1a: Aquaculture space, 2: Opening edge, 3: Groove, 4: Heat storage tank, 5: Weir, 6: Partition wall, 7: Lid, 8: Heat collecting surface, 8a to 8d: Heat collecting surface , 9: means for supplying heat carrier liquid, 10: hem part.

Claims (1)

(57) [Scope of utility model registration request] 1. A method for cultivating fish and shellfish using water such as fresh water or sea water, which is used as a cultivating tank for fish and shellfish, etc., which has the ability to cultivate, collect heat and store heat, and which has a box shape with an open top. Using a shell-shaped tank structure with a shape, cover the upper part of the opening with a flexible sheet material cover so that the hem part is located at the edge of the opening of the tank structure, and stretch it in the form of a sloping roof. On the other hand, a water supply means for supplying water to the back surface of the cover and adhering the supplied water is provided at the top end of the cover while forming the falling heat exchange surface of the water. A water collecting groove for receiving the flowing water is placed in contact with the peripheral edge of the cover at the opening edge of the aquaculture tank, and the collected water is passed through the groove to adjust the hot water storage level up to a position where the hot water storage volume is large and close to the groove. Hot water supplied to the heat storage tank that can be kept and stored in the heat storage tank, if necessary, A culture tank designed to be supplied to the culture space of the culture tank.