JPH10206052A - Heat storage tank - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a heat storage tank that is easy for transferring and installing it and can comply with the increase of size easily. SOLUTION: Multiple panel bodies 10, 20, 30, 40 and 50 are made and stocked, and when an order is received, the corresponding number of panel bodies 10, 20, 30, 40 and 50 are shipped. The panel bodies 10, 20, 30, 40 and 50 are plate form body units so that they can be loaded on a truck easily, truck transporting volume is compact and transferring of them from the unloaded point to the installing site and forming the tank 1 by assembling are easy. An heat exchanging device 88 is arranged during assembling and during assembling, during in stock and before shipment, a manhole 60, a water supplying pipe 70 and discharging pipe are attached to predetermined positions. With the selection of the size and number of the panel bodies 10, 20, 30, 40 and 50, various kinds of the heat storage tanks can be formed.

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 the like.

[0002]

2. Description of the Related Art For example, as a recent air conditioner, there has been provided a system in which a heat storage tank is added to an indoor unit and an outdoor unit. This heat storage tank is a water tank type, and in summer,
A heat exchange device installed inside is operated at night to ice water at a low electricity rate, and uses the heat stored as ice for cooling in the daytime. 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.

[0003] Conventionally, a heat storage tank is formed by integrally forming a heat-insulated stainless steel plate into a hollow rectangular shape in a manufacturing plant.
Then, they were shipped to the installation site with the heat exchange device, plumbing pipe, level gauge, etc. equipped.

[0004]

However, according to the conventional structure described above, since the heat storage tank is a cubic heat storage unit that is integrally rigidized, it cannot be easily transported or installed. Had occurred.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a heat storage tank which can easily carry and set up and can easily cope with an increase in size. It is another object of the present invention to easily provide heat storage tanks of various sizes.

[0006]

In order to achieve the above-mentioned object, according to the present invention, the heat storage tank according to the first aspect of the present invention is a heat storage tank.
A panel body is formed by laminating an inner layer plate and an outer layer plate made of P and an intermediate layer plate made of a foam, and a plurality of panel bodies are formed in a hollow square shape by connecting adjacent ones thereof, A heat exchange device is provided therein, and an openable / closable manhole, a water supply pipe, and a drain pipe are provided at predetermined positions of the panel body.

Therefore, according to the first aspect of the present invention, a large number of panel bodies are manufactured and stocked in a manufacturing factory, and when an order for a heat storage tank is made, a number of panel bodies according to the scale are shipped. . At that time, since the panel body group is a plate-like body unit, for example, loading when transporting by truck can be easily performed, transportation by truck can be made compact, further, moving from the truck to the installation site, In addition, the heat storage tank can be easily formed by assembly.

At that time, at the installation site, first, the bottom panel body is installed at a predetermined position, and the heat exchange device is arranged on the bottom panel body. Next, the front and rear panel bodies and the left and right panel bodies are arranged in an arbitrary order on the bottom panel body, and their adjacent portions are connected to each other, whereby the panel body group can be formed in a box shape having an open top surface. . By arranging the top panel body on the panel body group and connecting the adjacent panels, a hollow rectangular heat storage tank can be formed. A manhole, a water supply pipe, or a drain pipe is attached to a predetermined portion of the panel body during such assembling, during stocking in a manufacturing factory, or before shipping after ordering.

In the heat storage tank thus formed, the heat exchange device is connected to an indoor unit or an outdoor unit, and at that time, the work can be performed by entering through a manhole as required. By injecting water from the water supply pipe with the drain pipe closed, the system can be systematized as an air conditioner. Subsequent operation can be used for heating and cooling.

As described above, heat storage tanks of various dimensions (types) can be configured according to the size of the panel body and the number of sheets used, so that it is possible to easily cope with an increase in the size of the heat storage tank. Further, in the heat storage tank according to claim 2 of the present invention, in the configuration according to claim 1 described above, the manhole is provided on a panel body located at the top of the hollow rectangular panel body, and the manhole is provided on the panel body at the top. It is characterized by being formed of a resin-made cylindrical body inserted into the formed through-hole and fixed to the panel body, and having a lid that can be opened and closed on the cylindrical body.

Therefore, according to the second aspect of the present invention, a manhole can be easily formed in the top panel body, and the lid can be easily opened and closed to enter and exit the heat storage tank through the manhole.

[0012] The heat storage tank according to claim 3 of the present invention comprises:
2. The stainless steel pipe according to claim 1, wherein the water supply pipe and the drain pipe are provided on the panel body located on the side of the hollow rectangular panel body, and are inserted through through holes formed in the panel body. A stainless steel flange integrated with the inner ends of the water supply pipe and the drainage pipe is fixed to the inner layer plate via a connector, and a sealing material is provided between the contact surfaces of the flange and the inner layer plate. And an intermediate portion between the water supply pipe and the drainage pipe is held by a holding bracket fixed to the outer layer plate via a fixture.

Therefore, according to the third aspect of the present invention, the water supply pipe and the drain pipe can be easily arranged on the panel body in a state where there is no water leakage by the sealing material and in a state where the holding bracket is stable. Stainless steel makes it hard to rust.

[0014]

BEST MODE FOR CARRYING OUT THE INVENTION

Embodiment 1 of the Invention Hereinafter, a first embodiment of the present invention will be described with reference to FIGS. 1 to 8 as a state adopted in a heat storage tank of an air conditioner.

1 to 3, a heat storage tank 1 includes one bottom panel body 10, two front panel bodies 20, one side panel body 30, and two rear panel bodies. Body 4
By connecting between 0 and the adjacent one of the top panel bodies 50, it is formed in a hollow rectangular shape (closed box shape).

Each panel body 10, 20, 30, 40, 50
Has a rectangular shape, and inner plates 11, 21, 31, 41, 51 and an outer plate 1 made of FRP (fiber reinforced resin plate).
2, 22, 32, 42, and 52 and the intermediate layer plates 13, 23, 33, 43, and 53 made of foam are laminated.

4 and 5, the bottom panel 1
The inner layer plate 11 at 0 is formed by a rectangular inner plate portion 11A and an outer frame plate portion 11B which is bent outward at right angles from the four side edges of the inner plate portion 11A. The outer layer plate 12 includes a rectangular outer plate portion 12A and the outer plate portion 12A.
A inclined plate portion 12B bent inwardly from the four side edges of A at an obtuse angle, and a parallel plate portion 12 bent at an obtuse angle from the inner end of the inclined plate portion 12B and extending in the same direction as the outer plate portion 12A.
C and an inner frame plate portion 12D bent at a right angle outward from the free end of the parallel plate portion 12C.

The inner plate 11 and the outer plate 12 are formed so that the inner frame plate 12D is tightly fitted in the outer frame plate 11B with the intermediate plate 13 therebetween. At the time of this inner fitting, the parallel plate portion 12C is brought into contact with the peripheral portion of the inner plate portion 11A, and the contact portion makes the inner plate 1
1 and the outer layer plate 12 form a superposed portion 14. Note that a connection hole 15 is formed in the overlapping portion 14, and the overlapping portion 14 is fixed by an epoxy resin 16.

Each front panel body 20, each side panel body 3
0, each rear panel body 40 is also a bottom panel body 10
The configuration is the same as That is, the inner layers 21, 31, 41
Are inner plate portions 21A, 31A, 41A and outer frame plate portion 21
B, 31B and 41B, and the outer layer plate 2
2, 32, 42 are outer plate portions 22A, 32A, 42A, inclined plate portions 22B, 32B, 42B and parallel plate portions 22C, 32.
C, 42C and inner frame plate portions 22D, 32D, 42D.

The inner plates 21, 31, 41 and the outer plate 2
2, 32, and 42 mean that the inner frame plates 23D, 32D, and 42D are denser than the outer frame plates 21B, 31B, and 41B with the intermediate layer plates 23, 33, and 43 interposed therebetween. It is formed so as to be fitted. Here, the inner layers 21, 31, 41
The thickness of the outer layer plates 22, 32, and 42 is smaller than the thickness of the inner plate portions 21A, 31A, and 41A, and the parallel plate portions 22C, 32C, and 42C are spaced apart from the peripheral edges of the inner plate portions 21A, 31A, and 41A. Thus, the peripheral portions of the intermediate layer plates 23, 33, 43 are located in the gaps.

Further, in the case of the above-mentioned inner fitting, the outer frame plate portion 2
1B, 31B, 41B and inner frame plate portions 22D, 32D,
42D, the inner plates 21, 31, 41 and the outer plate 2
2, 32, 42 are formed as overlapping portions 24, 34, 44. In addition, the connection holes 25, 3
5, 45 are formed, and the overlapping portions 24, 34, 44 are fixed by epoxy resins 26, 36, 46.

The top panel body 50 has a thickness similar to that of the bottom panel body 10 with its thickness reduced. That is, the inner layer plate 51 is formed by the inner plate portion 51A and the outer frame plate portion 51B, and the outer layer plate 52 is formed by the outer plate portion 52A, the inclined plate portion 52B, the parallel plate portion 52C, and the inner frame plate portion 52D. Is formed. Then, with the intermediate layer plate 53 sandwiched, the inner frame plate portion 52D is fitted inside the outer frame plate portion 51B,
The overlapping portion 54 is formed by the contact portion of the parallel plate portion 52C with the inner plate portion 51A.
5 are formed, and the overlapping portion 54 is fixed by an epoxy resin 56.

The bottom panel body 10 and the bottom panel body 1
The connection between the adjoining front panel body 20, side panel body 30, and rear panel body 40 arranged at right angles to 0 is
A front panel body 20 is attached to the overlapping portion 14 of the bottom panel body 10.
The overlapping portions 24 and 3 of the side panel body 30 and the rear panel body 40
This is performed by the connection tool 3 composed of a bolt and nut acting between the connection holes 15, 25, 35, 45 in a state where the connection members 4, 44 are in contact from above. A silicon layer 4 also serving as a joint seal is formed between the overlapping portions 14, 24, 34, 44 when the connection is made.

The connection between the adjacent front panel bodies 20 arranged on the same plane is performed by connecting the connecting members 3 between the connected connecting holes 25 with the overlapping portion 24 abutting from the side.
Is applied, and the silicon layer 4 is formed between the overlapping portions 24. In addition, the connection between the adjacent rear panel bodies 40 arranged on the same plane,
It is performed in a similar manner.

The connection between the front panel body 20 and the side panel body 30 which are disposed at right angles is made through the joint member 6 which also serves as reinforcement. That is, the joint member 6
Is an L-shaped member made of FRP, and connection holes 7 are formed at predetermined positions on both sides thereof. The connection is performed in a state where the joint member 6 is in contact with both the overlapping portions 24 and 34 from the side, and the connection holes 7, 25, 7,
This is performed by the action of the connecting tool 3 between 35, and the silicon layer 4 is formed between the joint member 6 and the overlapping portions 24 and 34. In addition, the connection between the adjacent side panel bodies 30 and the rear panel body 40 arranged in a right angle is similarly performed.

The connection between the front panel body 20, the side panel body 30, the rear panel body 40, and the top panel body 50 arranged at right angles to these panel bodies 20, 30, 40 is connected between adjacent panels. , Front panel body 20, side panel body 3
0, in a state where the overlapping portion 54 of the top panel body 50 is in contact with the overlapping portions 24, 34, 44 of the rear panel body 40 from above, between the connecting holes 25, 35, 45, 55 which are communicated. This is performed by actuating the coupling 3 and the overlapping section 24,
The silicon layer 4 is formed between,, and.

As described above, each panel body 10, 2
The adjacent portions of 0, 30, 40, and 50 are connected by the connecting tool 3 with the silicon layer 4 serving as a joint and a seal interposed therebetween, thereby forming the hollow rectangular (closed box) heat storage tank 1. You.

1 to 3 and 5, a manhole 6 through which a person can enter and exit is provided at a predetermined position of the top panel body 50.
0 is provided to be freely opened and closed. That is, the manhole 60
Is a through hole 5 formed at a predetermined position of the top panel body 50.
7 is formed of a resin-made (FRP) tubular body 61 inserted through the flange 7. A flange-shaped flange body 62 is integrally formed from the outer surface of the tubular body 61 at an intermediate position.

When the lower half of the cylindrical body 61 is inserted into the through hole 57 and the flange body 62 is placed on the outer layer plate 52, the cylindrical body 61 and the top panel body 50 are connected to each other. Adhesive (or caulking material) between contact surfaces (proximal surfaces)
63 are interposed, and the flange body 62 and the outer layer plate 52 are fixed by a plurality of connecting tools (rivets, etc.) 64.

A cover 65 capable of opening and closing the manhole 60 is provided.
The lid 65 has a disk-shaped upper plate 65A having a diameter larger than that of the manhole 60, a cylindrical body 65B suspended from the lower surface of the upper plate 65A, and a lower end of the cylindrical body 65B. The lower plate 65C or the like is closed, and a foam 66 is inserted into the inside of the lower plate 65C. A rubber seal 67 is provided.

Here, the foam 66 and the rubber sealing material 67 are used.
The parts except are made of resin (FRP).
The lid 65 is opened and closed by being fitted to and removed from the cylindrical body 61 in the vertical direction, or is attached to the cylindrical body 61 via a shaft, and is opened and closed by swinging around the shaft. At this time, a handle for opening and closing operation is provided as needed. In addition, as shown by the imaginary line in FIG. 5, an outer tubular body 68 fitted to the tubular body 61 may be vertically provided from an outer edge of the upper plate body 65 </ b> A in the lid body 65.

In FIGS. 1 to 3 and 6, for example, a water supply pipe 70 for water injection and a drain pipe 71 for draining are provided at predetermined positions of the side panel body 30. That is,
The water supply pipe 70 and the drain pipe 71 are made of a stainless steel pipe inserted into a through hole 37 formed in the side panel body 30,
A flange 72 made of stainless steel and flanged is integrally fitted to the inner ends of the water supply pipe 70 and the drain pipe 71 after they are externally fitted. Here, on the inner end side of the through hole 37, the side panel body 3 is provided.
0, the inner plate portion 31A of the inner layer plate 31
It is formed so as to remain as 1a.

The flange 72 is fixed to the inner plate 31 via a connecting member 73 comprising a bolt 73A, a nut 73B and a ring 73C. That is, the bolt 73A is
A plurality of bolt holes 38 projecting outward from a plurality of locations in the circumferential direction of the flange 72 are formed in the flange portion 31a to allow the bolt 73A to be inserted from inside. The ring body 73C made of, for example, FRP is externally fitted to the water supply pipe 70 and the drain pipe 71, and a plurality of bolt holes 74 for allowing a group of bolts 73A to be inserted therethrough are formed in a plurality of circumferential positions.

Therefore, the nut 73B is screwed into the outer end of the bolt 73A inserted between the bolt holes 38 and 74, and tightened, thereby forming the flange 72 and the ring 73C.
Thus, the flange portion 31a is sandwiched, and the water supply pipe 70 and the drain pipe 71 are fixed. At that time,
A sealing material (such as an O-ring or a caulking material) 75 is interposed between the contact surface between the flange 72 and the inner layer plate 31.

In order to hold an intermediate portion between the water supply pipe 70 and the drain pipe 71, a flange-shaped holding bracket 76 made of FRP is provided. The holding bracket 76 is closely fitted to the water supply pipe 70 and the drain pipe 71 and is fixed to the outer layer plate 32 of the side panel body 30 via a fixing tool 77 such as a rivet.
Fixed to

In FIGS. 1 to 3 and 7, for example, a level gauge 80 for detecting a water level is provided at a predetermined position of the front panel body 20. That is, a through hole 27 is formed at a predetermined position below the front panel body 20, and the through hole 2 is formed.
7 has an FR whose inner movement is restricted by the inner plate portion 21A.
A cylindrical spacer 81 made of P is fitted. A flanged tubular fitting 82 is fitted into the tubular spacer 81 from the outside. At this time, the flange is provided on the outer layer plate 22 of the front panel body 20 via a packing 83, and The cylindrical spacer 81 is fixed by screwing the cylindrical nut body 84 to the inner end side of the mounting bracket 82.

The level meter 80 includes a detection unit 85 and a display unit 86
The detection unit 85 is attached to the inner end side of the mounting bracket 82 by screwing or the like, and the display unit 86 is attached to the outer end side of the mounting bracket 82 via a fixture or the like.

A heat exchange device 88 is provided inside the heat storage tank 1. The operation of the first embodiment will be described below. In the manufacturing factory, as shown in FIG. 8, a plurality of types of bottom panel bodies 10 having different left and right lengths according to the scale of the heat storage tank 1, and a plurality of types of top panel bodies 50 having different left and right lengths in the same manner. And one type of panel body 20, 30, 40 having the same shape (standard dimensions), and joint members 6 having a plurality of lengths are manufactured and stocked. The connection holes 15, 55, 25, 35, 45, 7 have already been formed.

For example, when an order of the scale shown in FIG. 1 is received, each of the bottom panel body 10 and the top panel body 50 having the minimum length and the six panels used as the panel bodies 20, 30, 40 are used. The panel body and four minimum length joint members 6 are shipped. The panel group is transported by truck, for example, but loading on a truck can be easily performed because it is a plate-like unit, and transport by truck is compact because the plate-like body is stacked. You can do it. Furthermore, the movement from the truck to the installation site can be easily performed since it is a plate-like unit.

At the installation site, first, the bottom panel body 10 is installed at a predetermined position and fixed, and a heat exchange device 88 is provided on the bottom panel body 10. Then, on the bottom panel body 10, two front panel bodies 20
The one side panel body 30, the two rear panel bodies 40, and the four joint members 6 are arranged in an arbitrary order, and the space between the adjacent panels is determined by the connection method described above. The panel bodies 10, 20, 30, and 40 are connected in a box shape with an open top. And the panel body 20,
The top panel body 50 is arranged on the groups 30 and 40, and the space between the top panel bodies 50 is connected by the above-described connection method, whereby the hollow rectangular (closed box-shaped) heat storage tank 1 is formed.

Manhole 60, water supply pipe 70, drain pipe 7
1. Through holes 57 and 3 for providing a level meter 80 and the like
All or a portion of 7, 27 is formed in place during stock at the fabrication plant, or after ordering and before shipping, or during work at the installation site. Then, by using the through holes 57, 37, and 27, the manhole 60,
A water supply pipe 70, a drain pipe 71, and a level meter 80 are attached.

In the heat storage tank 1 thus formed, the heat exchanging device 88 is connected to an indoor unit or an outdoor unit. At that time, the work is performed by entering the manhole 65 through the manhole 65 as necessary. Then, with the drain pipe 71 closed, the water supply pipe 7
By injecting water into the heat storage tank 1 from 0, the system is configured as an air conditioner. By the subsequent operation, it is used for heating and cooling as described at the beginning.

Embodiment 2 of the Invention Next, a second embodiment of the present invention will be described with reference to FIG. That is,
I-shaped cover 91 with fitting member 90 attached to one side
And an L-shaped cover 93 having fitting members 92 attached to the inner surfaces on both sides. The covers 91 and 93 are made of aluminum, and the fitting members 90 and 92 are
The cross section is made of a U-shaped rail by aluminum. In addition, each panel body 10, 20, 30, 40, 5
Rubber seal material 95 is interposed between adjacent inner surfaces of
A corner rubber seal material 96 is provided at the corner of the joint member 6.
Is interposed.

The I-shaped cover 91 has its fitting member 90
Is the overlapping part 1 of each panel body 10, 20, 30, 40, 50
4, 24, 34, 44, and 54 are externally fitted to each other so that each panel body 10, 20, 30, 40,
The groove formed on the outer surface of the edge of the groove 50 is covered from the outside. The L-shaped cover 93 covers the concave portion formed on the outer surface side of the joint member 6 from the outside by fitting the fitting member 92 to both ends of each joint member 6 from outside.

According to the second embodiment, the edge portions of the panel bodies 10, 20, 30, 40, 50 in which the intermediate layer plates 13, 23, 33, 43, 53 for heat insulation (for heat insulation) are thinned. In addition, since the outside of the joint member 6 is covered by the covers 91 and 93, there is no air convection, and the heat insulating effect can be improved.

Embodiment 3 of the Invention Next, a third embodiment of the present invention will be described with reference to FIGS.
For example, as shown in FIG. 10, when the heat storage tank 1 is enlarged, each of the long bottom panel body 10 and the top panel body 50 and the two panels used as the panel bodies 20, 30, and 40 are used. 14 panel bodies and a long joint member 6
Are shipped and assembled at the installation site.

At this time, as shown in FIGS. 10 and 11,
The reinforcing member 100 is disposed outside the overlapping portion 24 of the front panel body 20 and outside the overlapping portion 44 of the rear panel body 40,
Thus, the connection by arranging the front panel body 20 and the rear panel body 40 on the same plane is performed by connecting the reinforcing members 100 and
4 is performed. Here, the reinforcing member 100 is manufactured in a strip shape using aluminum, FRP, or the like, and a connection hole 101 is formed at a predetermined position.

As shown in FIGS. 10 and 12, for example, a ladder body 105 is disposed on the front panel body 20 side. The ladder body 105 includes a strip-shaped vertical plate body 106,
A horizontal member 107 made of a pipe penetrated and fixed at a plurality of positions at predetermined intervals with respect to the vertical plate body 106, and a connection hole 108 is formed at a predetermined position of the vertical plate body 106. ing.

According to the third embodiment, when the front panel members 20 are arranged on the same plane and connected to each other, the reinforcing members 100 are brought into contact with the outsides of the both overlapping portions 24, respectively, and communicate with each other. The connecting tool 3 is operated between the four connecting holes 25 and 108. The rear panel body 40 is connected in the same manner. Thus, the rigidity of the entire heat storage tank 1 can be firmly increased.

Further, when arranging and connecting the front panel members 20 on the same plane, the vertical plate member 106 abuts on the outside of one overlapping portion 24 and the washer is attached on the outside of the other overlapping portion 24. After the body 109 is abutted, the connecting tool 3 is actuated between the connected connecting holes 25 and 108,
The ladder body 105 is fixed when the front panel body 20 is connected. Thus, the large heat storage tank 1 can be easily moved to and from the top panel body 50.

Although the reinforcing member 100 is shown only at the center connecting portion, the reinforcing member 100 may be of a type in which the reinforcing member 100 is disposed at all of the connecting portions. The type in which the reinforcing member 100 is arranged at the connection portion may be used. Further, the bottom panel body 10 and the top panel body 50 may be configured by connecting a plurality of short-length members.

According to the third embodiment, the joint member 6 made of aluminum is shown.
It may be made of P. Further, the rubber seal material 95 is interposed at a position slightly outside the inner surface, but may be interposed at the inner surface side. Further, the ladder body 105 can be disposed at an arbitrary position on the front, rear, left and right panel bodies 20, 30, 40, 50 using the connecting portion.

In the above-described embodiment, the heat storage tank 1 is shown to have two sizes, but this depends on the size of each panel body 10, 20, 30, 40, 50 and the number of sheets used. The heat storage tank 1 having dimensions (model) can be configured.

In the above-described embodiment, the connection between the adjacent front panel body 20 and the side panel body 30 disposed at right angles is performed via the joint member 6 in the form of an angle material. However, by adopting the form as shown in FIG. 5 for the connection between the adjacent front panel body 20 and the side panel body 30 as shown in FIG. 5, the joint member 6 is unnecessary, and the corner portion is formed neatly. I can do it.

[0055]

According to the first aspect of the present invention, the panel group can be handled in plate units from the manufacturing factory to the assembly at the installation site, for example, loading on a truck, installation from a truck. Work such as moving to the site and forming a tank by assembling can be easily performed, and truck transportation can be performed in a compact manner.

At the installation site, a heat exchanger is provided on the bottom panel body, and the front and rear panel bodies and the left and right panel bodies are arranged and connected in any order on the bottom panel body. By arranging and connecting the top panel body on the panel body group, a hollow rectangular heat storage tank can be formed. Then, manholes, water supply pipes, and drain pipes can be attached to predetermined locations during assembly, during stocking in a manufacturing factory, before shipping after ordering, and the like. Therefore, heat storage tanks of various dimensions can be easily configured according to the size of the panel body and the number of sheets used, thereby easily coping with an increase in the size of the heat storage tank.

According to the second aspect of the present invention,
Manholes can be easily formed on the top panel,
By opening and closing the lid, it is possible to easily enter and exit the heat storage tank through the manhole.

According to the third aspect of the present invention, the arrangement of the water supply pipe and the drain pipe with respect to the panel body is easily performed in a state where there is no water leakage by the sealing material and in a stable state by the holding bracket. And can be formed with stainless steel without rust.

[Brief description of the drawings]

FIG. 1 shows a first embodiment of the present invention, and is a perspective view of a heat storage tank.

FIG. 2 is a cross-sectional plan view of the heat storage tank.

FIG. 3 is a vertical sectional side view of the heat storage tank.

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

FIG. 5 is a vertical sectional side view of a main part of the heat storage tank.

FIG. 6 is a vertical sectional side view of a portion of the heat storage tank where a water supply / drain pipe is provided.

FIG. 7 is a vertical sectional side view of a portion where the level meter of the heat storage tank is provided.

FIG. 8 is a schematic perspective view of the heat storage tank before shipping.

FIG. 9 shows a second embodiment of the present invention, and is a cross-sectional plan view of a main part of a heat storage tank.

FIG. 10 shows a third embodiment of the present invention, and is a schematic perspective view of a heat storage tank.

FIG. 11 is a cross-sectional plan view of a main part of the heat storage tank.

FIG. 12 is a cross-sectional plan view of a main part of the heat storage tank.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Thermal storage tank, 3 connector, 6 joint members, 10 bottom panel body, 11 inner layer board, 12 outer layer board, 13 intermediate layer board, 14 superposed part, 20 front panel body, 21 inner layer board,
22 outer layer board, 23 middle layer board, 24 superposed part, 30
Side panel body, 31 inner layer board, 32 outer layer board, 33 middle layer board, 34 overlapping section, 40 rear panel body, 41 inner layer board, 42 outer layer board, 43 middle layer board, 44 overlapping section,
50 top panel body, 51 inner layer board, 52 outer layer board, 5
3 Intermediate plate, 54 superposed part, 60 manhole, 61
Cylindrical body, 62 flange body, 65 lid body, 66 foam, 70 water supply pipe, 71 drain pipe, 72 flange, 7
3 connecting tool, 75 sealing material, 76 holding bracket,
77 fixture, 80 level meter, 82 mounting bracket,
85 detection unit, 86 display unit, 88 heat exchange device, 91
I-shaped cover, 93L-shaped cover, 100 reinforcing members, 1
05 Ladder body.

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Takeshi Sugimoto 2-3-2 Marunouchi, Chiyoda-ku, Tokyo Mitsui Electric Co., Ltd. (72) Koichi Negoro 2-3-2 Marunouchi 3-chome, Chiyoda-ku, Tokyo Inside Ryo Denki Co., Ltd. (72) Inventor Shigehiro Kimura 6-5-6, Tepa, Wakayama City Inside Wabishi Technica Co., Ltd. (72) Inventor Yoshinori Nishino 4-2-7-426 Shimaya, Konohana-ku, Osaka NB Inside the corporation

Claims (3)

[Claims] 1. A panel body is formed by laminating an inner layer plate and an outer layer plate made of FRP and an intermediate layer plate made of a foam, and a plurality of panel bodies are connected to each other to form a hollow square. A heat storage tank which is formed and has a heat exchange device disposed therein, and a manhole, a water supply pipe and a drain pipe which can be opened and closed at predetermined positions of the panel body. 2. A manhole is provided on a panel body located at a top portion of a hollow rectangular panel body, is inserted into a through hole formed in the panel body of the top portion, and is fixed to the panel body. The heat storage tank according to claim 1, wherein the heat storage tank is formed of a cylindrical body, and the lid is provided on the cylindrical body so as to be freely opened and closed. 3. A water supply pipe and a drain pipe are provided on a panel body located on a side of a hollow rectangular panel body, and are formed of a stainless steel pipe inserted into a through hole formed in the panel body.
A stainless steel flange integrated with the inner ends of the water supply pipe and the drain pipe is fixed to the inner layer plate via a coupling tool, and a sealing material is interposed between the contact surfaces of the flange and the inner layer plate. 2. The heat storage tank according to claim 1, wherein the middle of the water supply pipe and the middle of the drain pipe are held by a holding bracket fixed to the outer layer plate via a fixture.