JPH0542942U - Heat storage tank - Google Patents

Abstract

(57) [Summary] [Purpose] For example, when a heat storage tank is used as a hot water tank, it is possible to prevent deterioration of the heat insulation performance of the heat insulating material layer due to absorption of dew condensation water, or swelling of the waterproof sheet due to accumulation of dew condensation water. It is possible to prevent the phenomenon of sagging from occurring, prevent the heat insulating material layer and the waterproof sheet from falling off from the ceiling wall surface, and ensure that the heat insulating and waterproofing work can be performed reliably, easily and inexpensively. Provide a heat storage tank that can. [Structure] The heat storage tank is the ceiling wall of the concrete frame (1)
(2) The surface of the heat insulating material layer (5a) on the inner surface is covered with a non-moisture permeable synthetic resin-coated metal plate (8). Also, the bottom wall
On the surface of the heat insulating material layer (5b) (5c) on the inner surface of (3) and the side wall (4),
The waterproof sheet (7) made of synthetic resin is covered with or without the underlying sheet (9).

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a heat storage tank, and more particularly to an adiabatic and waterproof device for a heat storage tank used as a hot water tank.

[0002]

[Prior Art]

 Conventionally, in this type of heat storage tank, the wall surface of the concrete skeleton to be waterproofed, including the ceiling, was insulated and waterproofed by a heat insulating material layer consisting of many heat insulating material blocks and a synthetic resin waterproof sheet. ..

That is, the bottom wall, the side wall and the ceiling wall of the concrete frame are provided with heat insulating material layers, each of which is made up of a large number of heat insulating material blocks and fixed by a joining piece and a fixture, respectively. The surface of the heat insulating material layer is usually covered with a waterproof sheet made of, for example, a soft vinyl chloride resin via a base sheet, and a required portion of the waterproof sheet is joined to the joining piece to perform heat insulating and waterproofing.

[0004]

[Problems to be solved by the device]

 However, in such a conventional heat storage tank, since a synthetic resin waterproof sheet such as soft vinyl chloride resin has a moisture permeability, for example, when the heat storage tank is used as a hot water tank, the temperature inside the tank is 45 The temperature was up to -80 ° C, the humidity was very high, and when a vapor pressure difference was generated inside and outside the heat storage tank, the water vapor inside the tank passed through the moisture-permeable waterproof sheet and migrated outside the tank. However, since there is a heat insulation layer between the tarpaulin and the concrete wall, the water vapor that permeates at the interface between the heat insulation layer and the concrete wall causes internal dew condensation, and the dew condensation water generated by this causes the heat insulation layer. Is absorbed into the heat insulating material block of the heat insulating material layer and causes a decrease in the heat insulating performance of the heat insulating material layer, and when condensed water is accumulated between the heat insulating material layer and the waterproof sheet, it causes a swelling phenomenon of the waterproof sheet. On the ceiling wall side of the heat storage tank, the tarpaulin swells and hangs down, or the weight of the heat insulating material layer increases significantly due to the absorption of dew condensation water. There was a problem that there is.

On the other hand, for non-combustible heat-insulating waterproof construction of outdoor concrete structures such as flat roofs, synthetic resin-coated steel plates such as vinyl chloride resin-coated steel plates have been used to form a non-combustible waterproof layer. However, since such a synthetic resin-coated steel sheet is not easy to cut and is troublesome to handle, it takes a great deal of time for heat insulation and waterproofing. In addition to being expensive, the waterproof layer in the heat storage tank is not required to be noncombustible, so synthetic resin coated steel sheets have never been used as the waterproof layer in the heat storage tank.

As a result of intensive studies to solve the above problems in the conventional heat storage tank, the inventors have found that a synthetic resin-coated metal plate such as a vinyl chloride resin-coated steel plate has a very excellent moisture impermeable property. The inventors have found that by using this synthetic resin-coated steel sheet as a waterproof layer of the ceiling of a heat storage tank, it is possible to solve all the above problems, and the present invention has been completed.

The object of the present invention is to solve the above-mentioned problems of the prior art, and to prevent deterioration of the heat insulating performance of the heat insulating material layer due to absorption of dew condensation water when the heat storage tank is used as a hot water tank, for example. It is possible to prevent the occurrence of the phenomenon of swelling and sagging of the waterproof sheet due to the accumulation of condensed water, or to prevent the heat insulating material layer and the waterproof sheet from falling off from the ceiling wall surface. It is to provide a heat storage tank that can be constructed reliably, easily and inexpensively.

[0008]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the present invention provides a heat insulating material layer made of a heat insulating material block on the inner surface of the ceiling wall of a concrete frame, and the surface of the heat insulating material layer is a non-moisture permeable synthetic material. The resin-coated metal plate is covered, and the required parts of the synthetic resin-coated metal plate are fixed to the ceiling wall by the fixtures together with the corresponding parts of the heat insulating material layer, and on the inner surfaces of the bottom and side walls of the concrete frame, An insulating material layer composed of a large number of insulating material blocks and fixed by a joining / holding piece and an intermediate pressing piece and a fixture is provided respectively, and the surface of these insulating material layers is synthesized with or without a base sheet. The gist is a heat storage tank covered with a resin waterproof sheet, and the required part of the waterproof sheet is joined to the joint / holding piece.

[0009]

[Action]

 According to the above heat storage tank, only the surface of the heat insulating material layer on the inner surface of the ceiling wall of the concrete frame is covered with the non-moisture permeable synthetic resin coated metal plate, and the ceiling wall together with the heat insulating material layer is fixed by the fixture. Since it is fixed, for example, when a heat storage tank is used as a hot water tank, even if there is a vapor pressure difference between the inside and outside of the heat storage tank, the water vapor in the tank permeates the waterproof layer made of synthetic resin coated metal plate at the ceiling wall. There is no such thing as a transition to the outside of the tank. Therefore, it is possible to prevent deterioration of the heat insulating performance of the heat insulating material layer due to absorption of dew condensation water, or to prevent swelling or sagging phenomenon of the waterproof sheet due to accumulation of dew condensation water. Further, since the weight of the heat insulating material layer does not increase due to the absorption of the condensed water, the heat insulating material layer and the waterproof sheet can be prevented from falling off from the ceiling wall surface, and the heat insulating and waterproofing can be reliably performed.

Further, the waterproof layer is formed only on the ceiling wall portion of the heat storage tank using the synthetic resin-coated steel sheet, which is more expensive than the synthetic resin waterproof sheet, and the other bottom walls and side wall portions are the same as conventional ones. Since it uses a waterproof sheet made of synthetic resin, which is easy to cut, for insulation and waterproofing, it does not take much time and effort to perform insulation and waterproofing for the heat storage tank.

[0011]

【Example】

 Next, an embodiment of the present invention will be described with reference to the drawings.

1 and 2 show a first embodiment of the present invention.

First, referring to FIG. 1, on the inner surface of the ceiling wall (2), the bottom wall (3) and the side wall (4) of the concrete skeleton (1) of the heat storage tank, a heat insulating material composed of a number of heat insulating material blocks (6). Each layer (5) is provided.

As shown in FIG. 1 and FIG. 2, in the ceiling wall (2) of the concrete frame (1), the surface of the heat insulating material layer (5a) has a non-moisture permeable synthetic resin of a required size. While the coated metal plate (8) is directly coated without the underlying sheet (9), the heat insulating material layers (5b) (5c) are formed on the bottom wall (3) and the side wall (4). The surface of the is covered with a waterproof sheet (7) made of synthetic resin through a base sheet (9).

Then, in the ceiling wall (2), the side edges (8a) and (8a) of the synthetic resin-coated metal plate (8) covered with the heat insulating material layer (5a) are butted against each other. The side edge portions (8a) (8a) and the heat insulating material block (6) of the heat insulating material layer (5a) are fixed together on the ceiling wall (2) by the fixture (12). In the abutting part of both synthetic resin coated metal plates (8) (8), the band-shaped joint sheet (13) straddles the side edges (8a) (8a) of the metal plates (8) (8). It has been covered.

In the bottom wall (3) and the side wall (4), the four corners and the central portion of each heat insulating material block (6) are separated except for the peripheral edges and corners of the heat insulating material layers (5b) and (5c). It is fixed to the bottom wall (3) and the side wall (4) by a joining and pressing piece (10), an intermediate pressing piece (11) and a fixture (12), respectively. Here, as the joining / holding piece (10) for holding down the peripheral edge portion and the corner portion of the heat insulating material layer (5b) (5c), a substantially L-shaped cross section plate is used, and the heat insulating material layer (5b) A circular plate or a band-shaped plate is used as the intermediate pressing piece (11) for holding down the intermediate portion of (5c).

Further, the base sheet (9) is pressed from the front side by the joining / holding piece (10) having a substantially L-shaped cross section at the peripheral portion and the corner portion of the heat insulating material layers (5b) (5c), respectively. , Fastened to the bottom wall (3) and side walls (4) with fasteners (12) along with the edges of the insulation block (6). In the middle part of the heat insulating material layers (5b) and (5c), the base sheet (9) is above the intermediate pressing piece (11) that holds the heat insulating material block (6), and the base sheet (9) and the intermediate holding piece (9) It is not joined with 11).

The waterproof sheet (7) is joined to the joint / holding piece (10) having a substantially L-shaped cross section at the peripheral edge portion and the corner portion of the heat insulating material layers (5b) and (5c). (4) At the connecting portion between the upper edge of the ceiling wall (2) and the peripheral edge of the ceiling wall (2), the waterproof sheet extension (7a) is joined to the peripheral edge of the synthetic resin metal plate (8). This is preferable because it is not necessary to join the band-shaped joint sheet (13) at the corners between the side wall (4) and the ceiling wall (2).

The waterproof sheet (7) is joined to the joining / holding piece (10) having a substantially L-shaped cross section at the peripheral edge and the corners of the heat insulating material layers (5b) and (5c).

In the above, as the heat insulating material block (6) constituting the heat insulating material layer (5), for example, a resin foam such as polystyrene foam, polyurethane foam or polyethylene foam is used. Is economically advantageous to use. The heat insulating material block (6) has a thickness of about 25 to 100 mm, and usually has a width of 1 m and a length of about 2 m. The size and shape of the heat insulating material block (6) are, of course, such. It is optional.

The synthetic resin-coated metal plate (8) has good workability such as cutting, and its surface can be completely welded by a solvent such as tetrahydrofuran. For example, the core material has a thickness of 0. It is preferable to use a long plate or a single plate having a steel plate of 2 to 1.5 mm and a coating layer made of a polyvinyl chloride resin sheet having a thickness of 0.2 to 1.0 mm provided on both surfaces thereof.

As the waterproof sheet (7), a sheet made of thermoplastic synthetic resin such as soft polyvinyl chloride or a rubber sheet such as EPDM is used. Preference is given to using sheet-making sheets. The waterproof sheet (7) usually has a thickness of about 1.0 to 2.0 mm. The band-shaped joint sheet (13) is made of the same material as the waterproof sheet (7).

The base sheet (9) has a curing action for protecting the waterproof sheet (7), and when the waterproof sheet (7) is made of a plasticizer-containing synthetic resin, the plasticizer from the waterproof sheet (7) is a heat insulating material. It also has a plasticizer migration-preventing action of preventing migration to the layer (5). As such a base sheet (9), a foam sheet having a thickness of 1 to 4 mm made of an independent foam of a thermoplastic resin such as polyethylene, polypropylene, polyurethane and polyvinyl chloride, or these foam sheets and, for example, polyethylene Use a composite sheet in which a reinforcing layer made of polypropylene, polyvinyl chloride and polyester film or a woven or non-woven fabric made of these resins is attached to the entire surface with an adhesive or by heating. If the tarpaulin (7) is made of, for example, a soft vinyl chloride sheet, and the heat insulating material block (6) is made of a foam of polystyrene or polyvinyl chloride, a plasticizer is more likely to be used than the tarpaulin (7). In order to prevent the migration, it is preferable to use a polyethylene or polypropylene film, or a foam, or a composite sheet of a foam of these resins and a resin film, a woven fabric or a non-woven fabric.

In addition, as the joining / holding piece (10) and the intermediate holding piece (11), from the viewpoint of corrosion resistance, a hard or semi-hard synthetic resin plate, a metal plate, or a vinyl chloride resin for improving adhesiveness A plate material such as a steel plate having one or both sides coated with is used.

In the ceiling wall (2), the synthetic resin coated metal plate (8) is fixed to the concrete frame (1) from the surface side of the heat insulating material layer (5a), or the bottom wall (3) and the side wall (4). ), The fixing tool (12) for fixing the joining / holding piece (10) or the intermediate holding piece (11) to the concrete frame (1) uses open leg nails, curl plugs, etc. From the viewpoint of corrosion resistance, it is recommended to use corrosion resistant aluminum, stainless steel, nylon and other fiber reinforced synthetic resins.

The intermediate pressing piece (11) includes a circular head, a shaft portion connected to the central portion of the head portion, and a pressing portion and a fixing portion each including a retaining portion provided at the tip of the shaft portion. You may use the fixing tool made from polypropylene which has both.

As the adhesive agent for joining the waterproof sheet (7) to the joining / holding piece (10) or joining the strip-shaped joint sheet (13) to the synthetic resin-coated metal plate (8), epoxy-based, urethane It is possible to use a system adhesive or rubber adhesive, but especially when the waterproof sheet (7) and the joint / holding piece (10) or the joint sheet (13) and the joint surface of the synthetic resin coated metal plate (8) are both chlorinated. In the case of using a vinyl resin, it is preferable to use tetrahydrofuran alone or a solvent-type adhesive in which a small amount of vinyl chloride resin is dissolved in tetrahydrofuran, because an adhesive effect exceeding durability is produced. If the waterproof sheet (7) and the joint / holding piece (10) or the joint surface of the joint sheet (13) and the synthetic resin coated metal plate (8) are both made of thermoplastic synthetic resin, Alternatively, both can be joined by heat fusion without using an adhesive.

In the above heat storage tank, the surface of the heat insulating material layer (5a) inside the ceiling wall (2) of the concrete frame (1) is covered with a non-moisture permeable synthetic resin coated metal plate (8), Since this is fixed to the ceiling wall (2) with a fixture (12), even if a heat storage tank is used as a hot water tank, even if there is a vapor pressure difference between the inside and outside of the heat storage tank, the steam in the tank will be synthesized. It does not pass through the resin-coated metal plate (8) and migrate toward the outside of the tank. Therefore, the insulation performance of the heat insulation layer (5) does not deteriorate due to the absorption of dew condensation water, or the swelling or sagging phenomenon of the waterproof sheet (7) due to the accumulation of condensation water can be prevented, and the heat insulation layer It is possible to prevent the (5) and the waterproof sheet (7) from falling off the ceiling wall (2) surface. Moreover, the synthetic resin-coated steel plate (8) is used only on the ceiling wall (2) of the heat storage tank, and on the other bottom wall (3) and side wall (4), a synthetic resin waterproof sheet ( Since 7) is used, it does not take much time to perform heat insulation and waterproofing of the heat storage tank.

When the surface of the heat insulating material layer (5a) of the ceiling wall (2) is covered with the non-moisture permeable synthetic resin-coated metal plate (8), the fixing position by the fixing tool (12) is the synthetic resin. Approximately 20 to 30 mm from the end of the coated metal plate (8), and at the abutting portion of adjacent synthetic resin coated metal plates (8), (8), the fixing members (12) are fixed by strip-shaped joint sheets (13). It is most desirable to cover the head part of (1) and waterproof the synthetic resin-coated metal plate (8) through the fixing part (12) at the same time. In addition, if the size of the synthetic resin-coated metal plate (8) causes deflection in the central portion of the metal plate (8), the central portion of the metal plate (8) should be appropriately fixed so that it does not occur. Of course, the work clamp may be stopped by 12).

In addition, in order to improve waterproofness, a sealing material is provided on a side edge portion of the strip-shaped joint sheet (13) that covers the abutting portions of the adjacent synthetic resin-coated metal plates (8) and (8). It is desirable to apply it. As such a sealing material, for example, a material that is made of the same material as the solution type adhesive containing a vinyl chloride resin and a solvent and has a higher viscosity may be used.

Incidentally, in the ceiling wall (2) of the heat storage tank, the connecting side edge portions (8a) and (8a) of the adjacent synthetic resin coated steel plates (8) and (8) are, as shown in the modification example of FIG. They may be fixed by the fixing tool (12) in a state where they are stacked on each other. In these overlapping parts of synthetic resin-coated metal plates (8) (8), band-shaped joint sheets (13) are covered so as to straddle the side edges of the metal plates (8) (8). ..

Further, in the ceiling wall (2) of the heat storage tank, as shown in the modified example of FIG. 4, the synthetic resin metal plate (8) is previously cut into the same shape and the same size as the upper surface of the heat insulating block (6). Then, the cut piece of the synthetic resin metal plate (8) is bonded to the surface of the heat insulating block (6) via the adhesive layer (14) to cut the cut piece of the synthetic resin metal plate (8). The heat insulation block (6) and the heat insulation block (6) are panelized in advance, and such heat insulation block-synthetic resin metal plate connection panels (15) are arranged so as to face each other, and adjacent connection panels (15) ( 15) Joint portions of the same may be covered with the above-mentioned strip-shaped sheet (13).

[0033]

[Effect of the device]

 In the heat storage tank according to the present invention, as described above, the surface of the heat insulating material layer on the inner surface of the ceiling of the concrete frame is covered with the non-moisture permeable synthetic resin-coated metal plate, and the required portion of the synthetic resin-coated metal plate is covered. Is fixed to the ceiling wall together with the corresponding part of the heat insulating material layer by a fixture, so that, for example, when a heat storage tank is used as a hot water tank, even if a steam pressure difference occurs inside and outside the heat storage tank, There is no possibility that the water vapor in the tank will pass through the waterproof layer made of the synthetic resin-coated metal plate and migrate toward the outside of the tank. Therefore, it is possible to prevent the heat insulating performance of the heat insulating material layer from being deteriorated due to the absorption of the condensed water, or to prevent the phenomenon that the waterproof sheet is swollen or drooped due to the accumulated condensed water. Further, since the weight of the heat insulating material layer does not increase due to the absorption of the condensed water, the heat insulating material layer and the waterproof sheet can be prevented from falling off from the ceiling wall surface, and the heat insulating and waterproofing can be reliably performed.

Further, it is only the ceiling wall of the heat storage tank that the waterproof layer is formed by using the synthetic resin coated steel sheet which is more expensive than the synthetic resin waterproof sheet, and the other bottom wall and side wall portions are comparative. Because it is adiabatic and waterproof construction with a cheap and easy-to-cut synthetic resin waterproof sheet, it does not take much time to perform adiabatic and waterproof construction of the heat storage tank, and the material cost does not increase much, so it is adiabatic and waterproof. The effect is that construction can be performed easily and inexpensively.

[Brief description of drawings]

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

FIG. 2 is an enlarged sectional view of a ceiling wall portion of FIG.

FIG. 3 is an enlarged cross-sectional view of a ceiling wall portion showing a modified example of a connection state of synthetic resin-coated steel plates.

FIG. 4 is an enlarged cross-sectional view of a ceiling wall portion showing another modified example of the connection state of the synthetic resin coated steel plates.

[Explanation of symbols]

 1 Concrete structure of heat storage tank 2 Ceiling wall 3 Bottom wall 4 Side wall 5a Heat insulation layer of ceiling wall 5b Heat insulation layer of side wall 5c Heat insulation layer of bottom wall 6 Heat insulation block 7 Synthetic resin waterproof sheet 8 Non-moisture-permeable synthetic resin-coated metal plate 9 Base sheet 10 Joining and pressing piece 11 Intermediate pressing piece 12 Fixing tool

Claims (1)

[Scope of utility model registration request] 1. A heat insulating material layer (5a) comprising a heat insulating material block (6) is provided on the inner surface of a ceiling wall (2) of a concrete frame (1), and the surface of this heat insulating material layer (5a) is A non-moisture permeable synthetic resin-coated metal plate (8) is covered, and the required part of the synthetic resin-coated metal plate (8) and the corresponding part of the heat insulating material layer (5a) are fixed together with the fixture (12) to the ceiling wall. It is fixed to (2) and consists of a large number of heat insulating material blocks (6) on the inner surface of the bottom wall (3) and side wall (4) of the concrete frame (1), and also has a joining and holding piece (10) and an intermediate holding piece. The heat insulating material layers (5b) and (5c) fixed by (11) and the fixture (12) are provided respectively, and the surface of these heat insulating material layers (5b) and (5c) is covered with the base sheet (9). Or a heat storage tank in which a synthetic resin waterproof sheet (7) is covered without any intervention, and a required portion of the waterproof sheet (7) is bonded to a bonding / holding piece (10).