JP2001241871A - Ice heat storage tank and its manufacturing method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an ice heat storage tank which has a superior thermal insulation property and can store cold heat for a long time by integrally molding a heat insulating water-resistant layer on the internal wall surface of the tank and a concrete layer on the external wall surface of the tank. SOLUTION: The internal wall surface of this ice heat storage tank 1 which stores cold heat is formed of the heat insulating water-resistant layer 2 and the external wall surface of the tank 1 is formed of the concrete layer 1. The layers 2 and 3 are integrally molded and a water absorption preventing layer 4 is provided on the surface of the layer 2.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an ice storage tank for use in an air conditioner for cooling and heating using an ice storage and cooling system, and a method of manufacturing the same.

2. Description of the Related Art Conventionally, ice is made in an ice storage tank using inexpensive late-night electric power, cold energy is stored, and cooling is performed by an air conditioner using the cold heat stored in the ice storage tank during daytime cooling. Thermal storage systems are widely used.

[0003] An ice heat storage tank used for storing cold heat in the ice heat storage system is made of concrete, and a block made of a hard foamed resin such as urethane foam is attached to the inner peripheral wall surface of the tank. Alternatively, after a heat insulating layer is formed by applying urethane resin or the like, waterproofing is performed with a sheet, or waterproofing is performed by applying a synthetic resin paint or the like.

Further, as another ice heat storage tank, the inner peripheral wall surface and the outer peripheral wall surface are made of thermosetting reinforced plastic (FRP), and a hard urethane foam is formed between the inner and outer peripheral wall surfaces. There is an ice thermal storage tank.

[0005]

However, in the case of the former ice storage tank made of concrete, it is difficult to apply a thick heat insulating layer, and there is a limit in applying a thick urethane resin. The layer was relatively thin and had poor thermal insulation. Furthermore, after the concrete tank is formed, the inner peripheral surface thereof must be provided with a heat insulating means made of a hard foamed resin and a waterproofing means made of an epoxy resin or the like,
There is a problem that it takes a long time for the work, and a lot of trouble and cost are required for the production.

The reinforced plastic ice heat storage tank has the convenience of being lighter than a concrete tank and being easily constructed, but cannot be molded as a normal plastic product. Frames are provided at the center, inner surface and outer surface, and rigid polyurethane foam is molded with the central frame and hard synthetic resin is poured into both sides, so many workers are required, and a lot of labor and time are required. At the same time, the resulting ice thermal storage tank lacked elaboration,
Not only is the inner surface and appearance of the tank inferior, but also there is a problem that the cost is significantly increased as compared with the concrete tank.

Further, since the above conventional ice heat storage tanks are all large and bulky, if they are installed outdoors such as on the roof of a building or in a machine room, they become too conspicuous and deteriorate the scenery. Although it was suitable for installation in a small area, it was not suitable for installation in a small site area.

The present invention has been developed with the object of solving the above-mentioned problems, and is an ice heat storage tank having excellent heat insulation properties, capable of storing cold heat for a long time, and providing heat insulation and cooling of the inner peripheral wall surface. It is an object of the present invention to provide an ice heat storage tank and a method for manufacturing the same, in which a waterproof layer and a concrete layer can be formed at the same time, thereby facilitating construction and reducing total cost.

[0009]

As means for solving the above-mentioned problems and achieving the object, in the present invention, the inner peripheral wall is formed of a heat insulating / waterproof layer made of diatom ceramic, and the outer peripheral wall is formed of a concrete layer. We have developed and adopted an ice heat storage tank for storing the formed cold heat, in which a heat insulation / waterproof layer and a concrete layer are integrally formed, and a water absorption prevention layer is provided on the surface of the heat insulation / waterproof layer.

According to the present invention, in the ice heat storage tank configured as described above, the diatom ceramic is formed by baking diatomaceous earth into a powdery form, and adding water to a powdered material obtained by mixing a binder containing a polymer chemical as a main component. The ice heat storage tank, which is obtained by molding and kneading the kneaded material that has been kneaded into a clay state,
An ice storage tank with a perforated metal plate at the junction between the waterproof layer and the concrete layer was developed and adopted.

Further, according to the present invention, a reinforcing steel cage in which a vertical reinforcing bar and a horizontal reinforcing bar are combined is disposed at a position to be the four circumferential wall surfaces, and a perforated metal plate is fixed to the inner surface side of the assembled reinforcing steel cage. And an outer formwork are assembled, and diatomaceous earth is fired on the inner surface into a powder, and water is added to a powder material obtained by mixing a binder containing a polymer chemical as a main component, and the mixture is kneaded into a clay. A method for manufacturing an ice heat storage tank characterized by pouring concrete on the outer surface side, casting concrete on the outer surface side, joining and integrating with the kneaded material, and applying a water absorption preventing material to the surface of the inner heat insulation / waterproof layer, Adopted.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of an ice heat storage tank and a method for manufacturing the same according to the present invention will be described below with reference to the accompanying drawings. 1 is a rectangular parallelepiped used for storing cold heat in an ice heat storage system. This is an ice heat storage tank. The inner peripheral wall is composed of a heat insulating / waterproof layer 2 made of diatom ceramic, and the outer peripheral wall is composed of a concrete layer 3.

The diatom ceramic is a diatomaceous earth, that is, a soil formed by depositing the remains of phytoplankton over a long period of time. A fine particle of 100 to 200 mesh has a pore size of about 50 to 100 (air layer). ) Is a very fine-grained inorganic material, which is obtained by baking diatomaceous earth into a powder, adding water to a powder material obtained by mixing a binder mainly composed of a high molecular chemical, adding water, and kneading the mixture into a clay. Is molded and cured. Since each particle is porous, it has excellent heat insulating properties, and also has properties of water absorption and water retention.

Reference numeral 4 denotes a water-absorbing prevention layer formed by applying or spraying an epoxy resin or the like on the surface of the heat-insulating / waterproof layer 2. The diatom ceramic has water absorption as described above. The water absorption preventing layer 4
Is applied to reduce the thermal conductivity and improve the heat insulating effect.

Reference numeral 5 denotes a perforated metal plate such as an expanded metal, a punched metal, or a metal lath having a diamond-shaped cut as shown in FIG. 3, and is disposed at the boundary between the heat insulating / waterproof layer 2 and the concrete layer 3. The cuts of the perforated metal plate 5 need not necessarily be rhombic, but may be cuts such as insteps and rounds. The cuts are formed on the inner peripheral surface side of the reinforcing cage 6 formed by combining the vertical reinforcing bars 6a and the horizontal reinforcing bars 6b. The inner surface is divided into a heat insulating / waterproof layer 2 and the outer surface is divided into a concrete layer 3 with the perforated metal plate 5 as a boundary.

The operation of the thus constructed ice heat storage tank of the present invention will be described. The heat insulating / waterproof layer 2 on the inner peripheral wall surface of the ice heat storage tank 1 is made of diatom ceramic mainly composed of diatomaceous earth. Since each particle is porous, it is excellent in heat insulation and can maintain cold heat for a long time. In addition, the perforated metal plate 5 disposed at the boundary between the heat insulating / waterproof layer 2 and the concrete layer 3 makes the connection between the two stronger and more reliable and reinforced.

Next, a method of manufacturing the ice heat storage tank will be described with reference to FIGS.
8, the vertical reinforcing bar 6a and the horizontal reinforcing bar 6b will be described first.
Is placed at a position to be the four circumferential wall surfaces (FIG. 4). A perforated metal plate 5 such as an expanded metal, a punched metal, or a metal lath having a diamond-shaped, instep-shaped, or round-shaped cut is partially bound and fixed to the inner peripheral surface of the reinforcing bar 6 by welding, wire, or the like. 5).

Then, the inner mold 7 and the outer mold 8 are disposed on the inner surface and the outer surface of the reinforcing cage 6, respectively, and assembled (FIG. 6). Next, diatom ceramic K, that is, diatomaceous earth was fired from the inner surface to obtain a powder, and water was added to a powder material obtained by mixing a binder containing a polymer chemical as a main component and kneaded to obtain a clay-like kneaded material. Cast (Fig. 7). On the other hand, concrete C is cast from the outer surface (FIG. 8).

The diatom ceramic and concrete are prevented from entering the outer surface and the inner surface more than necessary by the perforated metal plate 5, respectively. 3 are joined together.

After curing and demolding, the ice heat storage tank 1 having the heat insulating / waterproof layer 2 on the inner peripheral surface and the concrete layer 3 on the outer peripheral surface is obtained (FIG. 9). Further, an epoxy resin is applied or sprayed on the inner peripheral surface of the ice heat storage tank 1 to provide a water absorption prevention layer 4, thereby completing the ice heat storage tank 1 (FIG. 10). The completed ice thermal storage tank can also be used as an underground thermal storage tank buried outdoors or underground.

The operation of the method for manufacturing the ice heat storage tank 1 will be described. The heat insulating / waterproof layer 2 on the inner surface and the concrete layer 3 on the outer surface can be formed at the same time, and the heat insulating / waterproof layer 2 on the inner peripheral wall is mainly composed of diatomaceous earth. Since each of the main particles is porous, the particles are excellent in heat insulation, can maintain cold heat for a long time, and can easily obtain an ice heat storage tank.

Although an example of the main embodiment of the present invention has been described above, the present invention is not limited to the above embodiment, but can achieve the object of the present invention and deviate from the gist of the present invention. It goes without saying that various design changes are possible within a range not to do.

[0023]

As described above, the ice heat storage tank according to the first aspect of the present invention has excellent heat insulating properties and can maintain cold heat for a long time because the inner peripheral wall surface is made of diatom ceramic and is porous. In addition, dew condensation does not occur on the outer wall surface of the heat storage tank.
Further, there is the convenience that the heat insulation / waterproof layer and the concrete layer can be formed at the same time, and since the water absorption prevention layer is provided on the surface of the heat insulation / waterproof layer, the heat conduction efficiency is extremely low and the heat insulation effect can be reliably exhibited.

The ice heat storage tank according to the second aspect of the present invention is characterized in that diatomaceous earth is baked into a powdery form, and water is added to a powdered material obtained by mixing a binder mainly composed of a high-molecular-weight chemical, and the mixture is kneaded. Since the kneaded material obtained as described above is molded and cured, it can be used only by adding water.

Further, the ice heat storage tank according to the third aspect of the present invention comprises:
A perforated metal plate is arranged at the junction between the heat insulation / waterproof layer and the concrete layer, so that the heat insulation / waterproof layer and the concrete layer with a certain thickness can be formed, and the connection between the two layers becomes stronger and more reliable. Reinforced.

Further, according to the method for manufacturing an ice heat storage tank of the present invention, the heat insulation / waterproof layer and the concrete layer can be simultaneously formed, the heat insulation property is excellent, the cold heat can be maintained for a long time, and the outer wall surface of the heat storage tank is provided. It is possible to easily manufacture a heat storage tank in which dew condensation does not occur.

[Brief description of the drawings]

FIG. 1 is a schematic longitudinal sectional view of an ice heat storage tank of the present invention.

FIG. 2 is a partially cutaway sectional view of the ice heat storage tank of the present invention.

FIG. 3 is a front view of a perforated metal plate.

FIG. 4 is a plan view in which reinforcing bars are arranged.

FIG. 5 is a plan view in which a perforated metal plate is fixed to a reinforcing cage.

FIG. 6 is a plan view showing a state where an inner mold and an outer mold are assembled.

FIG. 7 is a plan view showing a state in which diatom ceramic is poured.

FIG. 8 is a plan view showing a state where concrete has been hit.

FIG. 9 is a plan view of the ice heat storage tank with the mold removed.

FIG. 10 is a plan view showing a state in which a water absorption preventing layer is provided on the inner surface of the ice heat storage tank.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Ice thermal storage tank 2 Heat insulation / waterproof layer 3 Concrete layer 4 Water absorption prevention layer 5 Perforated metal plate

 ────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yoshihisa Thin Blade 5-14-10 Nishitenma, Kita-ku, Osaka Kinki Concrete Industry Co., Ltd. F-term (reference) 4G055 AA01 AA10 AC08 BA36 4G058 GA01 GA08 GB02 GC07 GD11 GF02 GF05

Claims (4)

[Claims] An ice heat storage tank having an inner peripheral wall formed of a diatom ceramic insulating and waterproofing layer and an outer peripheral wall formed of a concrete layer for storing cold heat, wherein the insulating and waterproofing layer and the concrete layer are integrated. An ice heat storage tank formed by molding and providing a water absorption prevention layer on the surface of the heat insulation / waterproof layer. 2. A diatom ceramic is formed by sintering diatomaceous earth into a powder, adding water to a powder material obtained by mixing a binder mainly composed of a polymer chemical, adding water, and kneading the mixture to form a clay. The ice heat storage tank according to claim 1, wherein 3. The ice heat storage tank according to claim 1, wherein a perforated metal plate is provided at a joint boundary between the heat insulating / waterproof layer and the concrete layer. 4. A reinforcing steel basket in which a vertical reinforcing bar and a horizontal reinforcing bar are combined is disposed at a position to be a peripheral wall, and a perforated metal plate is fixed to an inner surface side of the assembled reinforcing steel cage. Assemble and bake diatomaceous earth on the inner side to make a powder, add water to a powder material obtained by mixing a binder mainly composed of polymer chemicals, knead and pour the kneaded material into a clay, A method for producing an ice heat storage tank, comprising: casting concrete on the side, joining and integrating with the kneaded material, and applying a water absorption preventing layer to the inner surface of the heat insulating / waterproof layer.