JP2000046450A - Heat accumulating tank - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable a sufficient and safe sealing operation to be carried out without employing any welding at an entire circumference by a method wherein an entire inner layer member acting as a main body of a tank is integrally molded by FRP. SOLUTION: This tank is comprised of an outer shell section 20, a tank section 10 and a heat exchanger device 50. The tank section 10 is constituted of a cylindrical inner layer member 11 made of FRP having a bottom section and having an upper flange member 12. The inner layer member 11 is made such that at least one circumferential section and an entire circumference of a lower corner section are formed at increased wall sections 11d, 11f. The inner layer member 11 integrally molded with FRP can perform a sufficient safe sealing operation without welding an entire circumference. The tank section 10 may enforce entire rigidity by the increased wall sections 11d, 11f and then either a load or an inner pressure (hydraulic pressure) is received without showing deformation or breakage. Various kinds of pipes against the tank section 10 can be carried out by being inserted into the through holes formed in the increased wall sections 11d, 11f without producing any reduced strength.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat storage tank used for an air conditioner or a refrigerator.

[0002]

2. Description of the Related Art For example, as a recent air conditioner, a type comprising an indoor unit, an outdoor unit and a heat storage tank is provided.
This heat storage tank is a water tank type.In summer, the heat exchange device installed inside is operated at night, the water is frozen at a low electricity rate, and the heat stored as ice is stored in the daytime. Used for cooling. In winter, a heat exchange device (heat pump) provided inside is operated at night to heat water at a low electricity rate, and the heat stored as hot water is used for heating in the daytime.

As another method, there is a configuration in which a heat exchange device is provided outside the heat storage tank, and sherbet-like ice produced by the heat exchange device is transported to the heat storage tank by a pump. Further, there is also a configuration in which ethylene glycol or alcohol is put in the heat storage tank instead of water, and a ping-pong-sized bag containing water is put in the heat storage tank, and the water in the bag is iced.

Conventionally, a heat storage tank of this type has a structure in which a stainless steel plate is integrally rigidified into a bottomed cylindrical shape, and a urethane foam for heat insulation is laminated on the outer periphery.

[0005]

However, according to the above-mentioned conventional structure, especially when connecting the cylindrical portion and the bottom portion, it is necessary to weld the entire circumference in order to perform sealing sufficiently and safely. The price was higher.

Accordingly, an object of the present invention is to provide a heat storage tank that can be provided at a low cost.

[0007]

In order to achieve the above-mentioned object, a heat storage tank according to the first aspect of the present invention comprises an outer shell portion, a tank portion disposed in the outer shell portion, A heat exchange device, wherein the tank portion is a bottomed tubular and FRP inner layer body having an upper flange outward, and an outer layer body made of foam laminated outside the inner layer body. The inner layer body is characterized in that at least one portion in the circumferential direction and the entire periphery of the lower corner portion are formed in a thickened portion.

Therefore, according to the first aspect of the present invention, the inner layer body serving as the main body of the tank portion is integrally formed by FRP, so that the seal can be sufficiently and safely secured without employing welding all around. It can be done and the material can be minimized by the cylindrical shape, and the strength of the upper end opening can be ensured by the outward upper flange. Further, the tank portion can reinforce the overall rigidity by a thickened portion formed in the trunk portion and the lower corner portion, and thus the load and the internal pressure (water pressure) on the tank portion cause deformation and breakage of the tank portion. It can be received without. In addition, by arranging various pipes for the trunk portion by inserting the same through through holes formed in the thickened portion, the through holes can be formed without lowering the strength of the trunk portion. The heat storage tank thus configured can be systemized as an air conditioner by connecting the heat exchange device to an indoor unit or an outdoor unit, and can be used for heating or cooling by subsequent operation.

A heat storage tank according to a second aspect of the present invention comprises an outer shell, a tank disposed in the outer shell, and a heat exchange device, wherein the tank has a bottomed cylindrical shape. And an inner layer made of FRP having an outer upper flange and an outer layer made of foam laminated on the outer side of the inner layer. A base member made of FRP in which a lower layer made of foam that can be contacted is laminated on the upper surface, a side wall member made of FRP whose lower part is fixed to the base body side, and a lower surface that can be fitted to the upper end of the side wall member and is lower surface And a lid made of FRP in which an upper layer made of foam is laminated.

Therefore, according to the second aspect of the present invention, the inner layer body serving as the main body of the tank portion is integrally formed by FRP, so that the sealing can be sufficiently and safely performed without employing welding of the entire circumference. It can be done and the material can be minimized by the cylindrical shape, and the strength of the upper end opening can be ensured by the outward upper flange. Further, the tank portion can be protected by the outer shell portion, but at that time, the body portion of the inner tank body can be suitably insulated by an outer layer made of foam, and the bottom portion is made of foam on the base body side. Insulation can be suitably performed by abutting on the lower layer, and the upper end opening can be closed by the lid, and heat insulation can be suitably performed by abutting the upper layer made of foam on the upper flange.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below.
The state adopted in the heat storage tank of the air conditioner will be described with reference to the drawings.

1 to 3, a heat storage tank 1 includes an outer shell 20, a tank 10 provided in the outer shell 20, and a heat exchange device provided in the tank 10. 50 and the like.

In FIG. 1 to FIG. 7, the tank portion 10 has a bottomed cylindrical shape and an inverted trapezoidal shape, and is laminated with an inner layer body 11 made of FRP (made of fiber reinforced resin) and an outer layer of the inner layer body 11. And an outer layer body 12 made of foam.
That is, the inner layer body 11 has an inverted trapezoidal cylindrical body portion 11a, a bottom portion 11b closing a lower end of the body portion 11a, and a ring-shaped upper portion extending outward from an upper end of the body portion 11a. It is composed of a flange 11c, and the whole is integrally formed by FRP.

At this time, at two places (at least one place) displaced by 180 degrees in the circumferential direction of the body part 11a, a thickened part 11d is formed over the entire length in the vertical direction.
The inner and outer surfaces of the thickened portion 11d are formed as flat surfaces 11e. The lower corner portion formed by the lower end of the trunk portion 11a and the bottom portion 11b has an entire periphery formed as a thickened portion 11f.

The outer layer body 12 made of the foam is foamed in a state of being divided into a plurality of parts, and at this time, the thickened portions 11d,
It is molded to fit 11f. Then, the divided foam is laminated while being assembled on the outer side of the inner layer body 11, that is, on the outer surface of the trunk portion 11a. At this time, between the divided foams and between the lamination surfaces with the inner layer body 11 are fixed via an adhesive such as an epoxy resin. In the laminated state, the outer layer body 12 has its upper end abutted on the lower surface of the upper flange 11c and its lower end flush with the lower surface of the bottom portion 11b (similar level).

A non-breathable film 13 is laminated and fixed on the outer periphery of the outer layer body 12. The non-breathable film 13 is formed of a sealing film, aluminum foil, non-breathable cloth, or the like. Is done. A gel coat 14 is applied to the inner periphery of the inner layer body 11.

1 to 3, FIG. 5, FIG. 6, FIG. 8, and FIG. 9, the outer shell 20 comprises a base body 21 made of FRP,
A lower layer body 24 made of foam laminated on the upper surface of the base body 21 and capable of contacting the lower surface of the tank portion 10; a side wall body 30 made of FRP having a lower part fixed to the base body 21 side;
FRP lid 4 that can be fitted onto the upper end of the side wall 30
5 and an upper layer 46 made of foam laminated on the lower surface of the lid 45.

That is, the base body 21 is formed integrally and in a basin shape by FRP in a state having an upwardly rising portion 21b at the outer edge of a rectangular plate-shaped bottom portion 21a.
At this time, the central portion of the bottom portion 21a is formed to be thin and convex downward. An intermediate member 21c made of a veneer board (wood) is mounted on the central portion in a fitted state, and a thin pressing member 21d made of FRP is placed on the intermediate member 21c.
Is placed on the bottom portion 21a via an adhesive 21e or the like.
Is fixed to the thick portion. Thereby, the base body 21
The bottom is formed in the shape of a basin having a sandwich structure.

At each corner of the base body 21, a rectangular plate-shaped seating plate 22 is provided.
It is made of P and is fixed to the upper plate portion of the bottom portion 21a from below by an adhesive or the like. The seating plate 22 has a hole 23 for a connector. The lower layer body 24 is laminated so as to be fitted into the base body 21,
It is fixed with an adhesive or the like.

Incidentally, the bottom portion 11 with respect to the lower
The contact portion b is fixed (joined) with an adhesive such as rubber-based or acrylic-based adhesive or epoxy, thereby preventing displacement due to an earthquake or the like. Alternatively, in order to easily perform disassembly or the like, a concave portion is formed on the upper surface side of the lower layer body 24, and the bottom portion 11b is dropped into the concave portion for positioning.
The fixing may be performed.

The side wall member 30 has a pair of divided side wall portions 31 having a U-shaped cross section.
Are one wide panel body 32 and this wide panel body 32
Are formed by two narrow panel members 34 and the like which are connected to each other at right angles via corner members 33.

Each of the panel bodies 32 and 34 is composed of an outer layer member 35 made of FRP and an inner layer member 36 made of veneer board (wood). The two members 35 and 36 are laminated and fixed with an adhesive or the like. The corner member 33 is made of FRP,
Both end portions are the inner layer members 3 of the panel bodies 32 and 34.
6 and fixed by an adhesive or the like.

Both narrow panel members 3 of the divided side wall portion 31
In the play edge portion at 4, one lacks the outer layer member 35 and the other lacks the inner layer member 36.
Then, when the pair of divided side wall portions 31 are assembled in a rectangular tube shape, one inner layer member 36 is attached to the other outer layer member 35.
Are laminated, and at this time, a double-sided adhesive tape 37 is interposed between the lamination surfaces.

An aluminum strip 38 is connected from the outside to the seam where the inner layer member 36 and the outer layer member 35 are laminated.
Are laminated, and a double-sided adhesive tape 3 is interposed between the laminated surfaces.
9 are interposed. A group of screws 40 passed from the outside to the band plate 38 is configured to penetrate the other outer layer member 35 and then be screwed into one inner layer member 36.

The side wall member 30 formed in the shape of a square tube by the above 31 to 40 has its lower part externally fitted to the rising portion 21b of the base member 21, and then has a screw 4 from the outside.
Fixed by one group.

The lid 45, which can be fitted onto the upper end of the side wall 30, has a rectangular plate-shaped top portion 45a and a downwardly hanging portion 45b at the outer edge of the top portion 45a. It is formed in a shape. And the upper layer body 4
Numeral 6 is laminated so as to be fitted in the lid 45 and fixed by an adhesive or the like.

The lid 45 constructed as described above is fitted on the upper end side of the side wall 30, and the upper layer 46 is attached to the upper flange 11 c of the inner layer 11 from above. It is configured to be abutted. Then, after being externally fitted to the upper end side, it is fixed to the side wall 30 by a group of screws 47 from the outside.

1, 3, 4, and 7, a heat exchange device 50 is provided in the tank 10. That is, the heat exchange device 50 is, for example, of a gas type, and includes a gas pipe 51 disposed in a meandering shape in the tank unit 10, a support member 52 for maintaining the pipe form of the gas pipe 51,
It comprises a pair of gas supply / discharge pipes 53 connected to both ends of the gas pipe 51 and the like. Here, the gas pipe 51 and both gas supply / discharge pipes 53 are made of stainless steel pipe.

The two gas supply / discharge pipes 53 are connected to the body 1
It is inserted into the through hole 16 formed in the thickened portion 11d of 1a, and is connected to the gas pipe 51 via the connector 54 inside the tank portion 10. The gas supply / exhaust pipe 53
Is fixed to the thickened portion 11d via a bolt-nut type fixing tool 55, for example. At this time, the fixing can be performed stably and firmly while maintaining the sealed state by the strength reinforcement by the thickened portion 11d and the close contact of the fixing tool 55 by the inner and outer flat surfaces 11e.

A water supply pipe 56 for water injection and a drain pipe 57 for draining are provided at predetermined locations in the tank section 10. That is, the water supply pipe 56 and the drain pipe 57 are made of stainless steel pipes, and the through holes 17, 18 formed in the thickened portion 11d of the body portion 11a, like the gas supply / discharge pipe 53 described above.
Is inserted through. Then, the water supply pipe 56 and the drain pipe 57 are connected to the thickened portion 11d side through fixing tools 58 and 59 which are acted from inside and outside of the thickened portion 11d in the same manner as described above.
It is firmly fixed while maintaining a stable and sealed state. For example, a level gauge 60 for detecting a water level is provided at an inner end portion of the water supply pipe 56.

The operation of the above embodiment will be described below. The inner layer body 11 serving as the main body of the tank section 10 includes:
The whole of the trunk portion 11a, the bottom portion 11b, the upper flange 11c, and the thickened portions 11d and 11f is integrally formed by FRP, so that the sealing can be sufficiently and safely performed without employing the welding of the entire circumference. Yes, it can lower the price.

Then, in the construction state as shown in FIG. 1, the tank portion 10 includes the thickened portion 1 formed on the body portion 11a.
The rigidity of the whole can be reinforced by the thickened portion 11f formed at 1d or the lower corner portion, so that the load and the internal pressure (water pressure) on the tank portion 10 can be received without causing deformation or breakage of the tank portion 10. obtain.

The arrangement of the gas supply / discharge pipes 53, the water supply pipes 56 and the drain pipes 57 with respect to the body part 11a will
By passing through the through holes 16, 17, 18 formed in d, the through holes 16, 17, 18 can be formed without lowering the strength of the trunk portion 11a.
The fixing through the nut-type fixing members 55, 58, 59 is performed by fixing the fixing members 55, 5 to the inner and outer flat surfaces 11e.
Due to the close contact action of 8, 59, it is possible to stably and firmly maintain the sealed state.

In the above-described construction state, the trunk portion 11a of the inner tank body 11 is suitably insulated by laminating an outer layer body 12 made of a foam, an air-impermeable membrane 13 and the like, and a bottom part is formed. 11b is suitably insulated by contacting the foam lower layer body 24 on the base body 21 side, and furthermore, the upper end opening is closed by the lid body 45, and the foam upper body 11b is made of foam. The heat insulation is suitably performed by the contact of the upper layer body 24.

The heat exchange device 50 of the heat storage tank 1 thus configured is connected to an indoor unit or an outdoor unit. Then, with the drain pipe 57 closed, the water supply pipe 56 is
By injecting water inside, it is systematized as an air conditioner. Subsequent operation is used for cooling (heating) as described at the beginning.

As shown in the above-described embodiment, when the tank portion 10 is formed in a bottomed cylindrical shape and an inverted trapezoidal shape, the plurality of tank portions 10 can be fitted into each other, thereby enabling storage. And transportation can be performed compactly and efficiently.

In the above-described embodiment, the heat exchanging device 50 is provided in the tank portion 10, but as described at the beginning, the heat exchanging device 50 may be provided outside the tank portion. It may be.

As shown in the above-described embodiment, the intermediate member 21c made of veneer (wood) is partially provided on the base body 21.
When the inner layer member 36 made of veneer (wood) is used for a part of the side wall body 30, since the wood is inexpensive for FRP, the base body 21 and the side wall body 30 are used.
Can be provided at low cost while having sufficient strength. However, these base body 21 and side wall body 30 are all FRP
May be formed.

[0039]

According to the first aspect of the present invention, the entire inner layer body serving as the main body of the tank portion is integrally molded by FRP so that the seal can be sufficiently sealed without employing welding all around. And safe, and the cylindrical shape minimizes the material, while the outward upper flange ensures the strength of the upper end opening, thereby lowering the cost. Furthermore, the tank part can reinforce the whole rigidity by the thickening part formed in the trunk part and the lower corner part, and can receive the load and internal pressure (water pressure) without causing the deformation and breakage of this tank part, In addition, by arranging various pipes for the body part by inserting them into through holes formed in the thickened part,
The through hole can be formed without lowering the strength of the trunk portion.
The heat storage tank thus configured can be systemized as an air conditioner by connecting the heat exchange device to an indoor unit or an outdoor unit, and can be used for heating and cooling by subsequent operation.

According to the second aspect of the present invention,
The inner layer body, which is the main body of the tank part, can be sealed completely and safely without adopting welding around the whole by integrally molding the whole by FRP, and the material is minimized by the cylindrical shape. In addition to the above, the strength of the upper end opening can be secured by the outward upper flange, so that the price can be reduced. And the tank part can be protected by the outer shell part, and at that time, the heat insulation of the body part of the inner tank body can be suitably performed by the outer layer made of foam, and the heat insulation of the bottom part is made of the foam on the base body side. Insulation can be suitably performed by abutment on the lower layer made of foam. Further, the upper end opening can be closed by the lid, and the heat insulation is preferably performed by abutment of the upper layer made of foam on the upper flange. It can be carried out.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional front view of a heat storage tank, showing an embodiment of the present invention.

FIG. 2 is a perspective view of the heat storage tank.

FIG. 3 is a cross-sectional plan view of the heat storage tank.

FIG. 4 is a cross-sectional plan view of a main part in a tank part of the heat storage tank.

FIG. 5 is a cross-sectional plan view of a main part of the heat storage tank.

FIG. 6 is a vertical sectional side view of a main part of the heat storage tank.

FIG. 7 is a partially cutaway perspective view of a tank portion in the heat storage tank.

FIG. 8 is an exploded perspective view of an outer shell in the heat storage tank.

FIG. 9 is a partially cutaway perspective view of a base body and a lid in the heat storage tank.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Thermal storage tank 10 Tank part 11 Inner layer body made of FRP 11a Trunk part 11b Bottom part 11c Upper flange 11d Thickening part 11e Flat surface 11f Thickening part 12 Outer layer body made of foam 13 Non-breathable film-like body 20 Outer shell part DESCRIPTION OF SYMBOLS 21 FRP base body 21a Bottom part 21b Rising part 21c Intermediate member made of veneer board (wood) 21d Holding member 24 Foam lower layer body 30 FRP side wall body 31 Divided side wall part 32 Wide panel body 33 FRP made Corner member 34 Narrow panel body 35 FRP outer layer member 36 Veneer board (wood) inner layer member 38 Aluminum strip 45 FRP lid 45a Top portion 45b Hanging portion 46 Foam upper layer 50 Heat exchange device 51 Gas pipe 53 Gas supply / drain pipe 55 Fixture 56 Water supply pipe for water injection 57 Drainage for drainage 58 fixture 59 fixture 60 level meter

Claims (2)

[Claims] 1. An FRP having an outer shell portion, a tank portion disposed in the outer shell portion, and a heat exchange device, wherein the tank portion has a bottomed cylindrical shape and an upper flange outward. And an outer layer made of foam laminated on the outer side of the inner layer. The inner layer has at least one portion in the circumferential direction and the entire periphery of the lower corner portion increased in thickness. A heat storage tank formed in a portion. 2. An FRP having an outer shell, a tank disposed in the outer shell, and a heat exchange device, wherein the tank has a bottomed cylindrical shape and an outwardly upper flange. And an outer layer made of foam laminated on the outer side of the inner layer. The outer shell portion has an upper surface made of a lower layer made of foam that can contact the lower surface of the tank portion. Base body made of FRP laminated on the base, and an FRP having a lower part fixed to the base body side
A heat storage tank comprising: a side wall made of FRP; and a lid made of FRP in which an upper layer made of foam is laminated on the lower surface of the side wall, and which can be fitted to the upper end of the side wall.