JP2003090626A - Pressurized hot water storage tank and method of manufacturing the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a pressurized hot water storage tank the whole of which is of a shape of a rectangular parallelepiped advantageous in terms of installation space and which is prevented from being expanded and bent in lateral directions. SOLUTION: The whole (10) of the tank is shaped in a rectangular parallelepiped, and a bulkhead-like reinforcing member (2) having a through hole (c) is formed in its interior. The reinforcing member (2) is disposed in such a manner as to prevent the side walls (F1, F2, F3 and F4) of the tank from being bent in the direction of expansion due to pressure applied in the tank (10) and has a plate thickness capable of restricting such bending. The through hole (c) is formed in such a manner as to allow the reinforcing member (2) to maintain a strength capable of restricting the bending of the side walls (F1, F2, F3 and F4) and allows hot water to freely flow in the interior of the tank (10).

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a pressurized hot water storage tank.

[0002]

2. Description of the Related Art In recent years, household systems using fuel cells have been in the spotlight. In order to effectively utilize the exhaust heat of the fuel cell, such a fuel cell system is generally provided with a hot water storage tank for storing cooling water or hot waste water of the fuel cell. Conventional hot water storage tank 10G shown in FIG.
Has a large dead space DS as shown by hatching in FIG. In addition, the aspect ratio (= aspect ratio: Fig. 1)
The height (H) to diameter (D) ratio is somewhat limited, but the aspect ratio is large (diameter D to height H).
Is large), even if the ratio of the area of the circle to the dead space DS is the same, the area of the dead space DS itself becomes large. Therefore, the vertically long cylinder type is often used. However, such a vertically long cylindrical hot water storage tank looks larger than the actual volume, and the space in which it can be installed is also limited.

In order to solve the above problems, a rectangular parallelepiped hot water storage tank has been proposed. However, the rectangular parallelepiped hot water storage tank has low strength against the internal pressure of the hot water stored, and in order to withstand this, it is necessary to increase the thickness of the base material, that is, the tank, or to interpose a reinforcing member.

As an example of a conventional technique for reinforcing a rectangular parallelepiped hot water storage tank, there are JP-A-1-189458 and JP-A-6-189458.
4-90950 is proposed. JP-A 1-1
Japanese Patent No. 89458 has a problem in that the installation place is limited (limited to the wall of the building; the wall is used for reinforcement (deflection / expansion prevention)), and the space for reinforcement increases.

Japanese Unexamined Patent Publication No. 64-90950 discloses a structure shown in FIG.
As shown in Fig. 3, the rod-shaped reinforcing members M1 and M2 are used for the hot water storage tank 1.
Since the area for connecting to the side walls F1 and F2 and the side walls F3 and F4 of 0H is small, the side walls F1, F2, F3,
It was difficult to suppress the bending of F4, and the strength could not be sufficiently reinforced. Further, after the connection (for example, welding), since the connection cross-sectional area is small, excessive stress is concentrated on the connection point, and cracks or the like may occur during the use process.

[0006]

SUMMARY OF THE INVENTION The present invention has been proposed in view of the above-mentioned problems of the conventional pressurized hot water storage tank, and the overall shape is a rectangular parallelepiped which is advantageous in terms of installation space, and the lateral direction. It is an object of the present invention to provide a pressurized hot water storage tank capable of preventing expansion and bending of the tank and a manufacturing method thereof.

[0007]

A pressurized hot water storage tank according to the present invention comprises a partition-shaped reinforcing member (2) having a through hole (c) formed therein.
And the reinforcing member (2) is formed inside the tank (10) by the pressure applied in the tank (10).
(3, F4) is arranged so as to be able to suppress the bending in the expanding direction and has a plate thickness capable of suppressing such bending, and the through hole (c) has the reinforcing member (2) at the tank side wall. The strength (F1, F2, F3, F4) capable of suppressing the flexure can be maintained, and the hot water stores the hot water storage tank (10).
It is configured so that it can be distributed in the interior (claim 1; FIG.
(Fig. 13).

According to the pressurizing hot water storage tank of the present invention having such a structure, hot water is stored in the hot water storage tank (10) through the through hole (c) of the partition-shaped reinforcing member (2) provided inside the hot water storage tank (10). ) Can be distributed.

Further, the entire side edge portion of the partition wall (2) acting as a reinforcing member is fixed to the tank side walls (F1 to F4) by integral molding, welding or the like, so that the tank expands due to pressure. It can be surely prevented from bending.
That is, as compared with the case of supporting at a single point like a rod-shaped body, it is possible to reliably exhibit the force of suppressing the bending.

Generally, the hot water storage tank is generally made of stainless steel. In the case of stainless steel, when the partition wall, which is the flat plate-like reinforcing member, is fixed by welding, the fixing work becomes easier as compared with the case of supporting at one point like a rod-shaped body.

Alternatively, in the pressurized hot water storage tank of the present invention, since the partition walls sufficiently bend and prevent expansion, the FRP
It is also possible to manufacture with a material such as (fiber reinforced plastic). If a molding technique such as SMC (sheet mold compound) method or injection molding which has a high degree of freedom in the shape of the molded product is adopted, the following manufacturing method is possible.

That is, in the manufacturing method of the present invention for manufacturing the pressurized hot water storage tank as described above, the basic unit manufacturing process for manufacturing the basic unit (4) having the one surface (4a) opened, and one part Through hole forming step of forming a through hole (4c) on a surface (4b) facing the open surface of the basic unit (4), and the unit (4) provided with the through hole (4c).
A) a plurality of units are stacked, and a basic unit (4) having no through holes is arranged above and below the stacked units (4, 4A), and the units (4)
A unit laminating step in which the surface (4b) in which the through holes are not formed is the top surface and the bottom surface, and an assembly step in which the stacked units (4, 4A) are fixed to each other. (Claim 2; FIGS. 4 to 7).

Here, in the unit laminating step, the open surface (4a) of the unit (4) in which the through hole of the lowermost layer or the uppermost layer is not formed and the open surface (4a) of the unit (4A) adjacent thereto. It is preferable that a flat plate (2A) having a through hole (c) is arranged at the boundary portion of the flat plate (2A) and the flat plate (2A) having the through hole (c) is also fixed in the assembling step. 3; FIG. 4 to FIG. 7).

In the manufacturing method of the present invention, one surface (4
a) a basic unit manufacturing step of manufacturing a basic unit (4) having an open shape; and a through hole forming step of forming a through hole (4c) in a surface (4b) facing the open surface of the basic unit (4). And the surface (4b) formed with the through hole (4c) of one unit (4A-1) is set to the upper side,
With the open surface (4a) of the other unit (4A-2) facing downward, the other unit (4A-2) is stacked above the one unit (4A-1), and the plurality of stacked units are stacked. A unit laminating step in which the flat plate (2B) is located at the lowermost position, and the unit (4) having no through hole formed in the uppermost part is arranged, and a plurality of stacked units and the flat plate are fixed to each other. And the steps (claim 4; FIG. 8 and FIG. 9).

Here, it is possible to construct the above manufacturing method upside down. That is, in the manufacturing method of the present invention, the basic unit manufacturing process for manufacturing the basic unit (4) having a shape in which one surface (4a) is open, and the surface (4b) that opposes the open surface of the basic unit (4). Through hole (4
c) forming a through hole, and the surface (4) on which the through hole (4c) of one unit (4A-1) is formed.
The unit (4A-1) with the open side (4a) of the other unit (4A-2) facing up
The other unit (4A-2) is stacked above, the flat plate (2B) is positioned at the top of the stacked units, and the unit (4) in which the through hole is not formed at the bottom is arranged. It has a unit stacking step of arranging and an assembly step of fixing a plurality of stacked units and the flat plate to each other (claim 5; FIG. 10, FIG. 1).
1).

Alternatively, in the manufacturing method of the present invention, one surface (4
a) a unit manufacturing process for manufacturing a first unit (4) having an open shape and a second unit (4D) having an open two surfaces (4aa, 4aa); The first unit (4) is arranged in the lower layer, the second unit (4D) is arranged in the middle, and the first unit (4) arranged in the uppermost layer opposes the open surface. The surface (4b) constitutes the top surface and is the first layer arranged in the lowermost layer.
Unit (4) is arranged such that the surface (4b) facing the open surface constitutes the bottom surface, and a flat plate (2A) having a through hole (c) formed between the adjacent units is laminated. Processes and multiple units stacked (4, 4A)
And an assembly step of fixing the flat plates (2A) to each other,
And (claim 6; FIG. 12, FIG. 13).

[0017]

DETAILED DESCRIPTION OF THE INVENTION The accompanying drawings (FIGS. 1 to 13) will be described below.
An embodiment of the present invention will be described with reference to FIG.

In FIG. 1 showing the first embodiment, two partition walls 2 each having two through holes c are horizontally abutted on the inner wall portions of the side walls F1 to F4 of the rectangular parallelepiped hot water storage tank 10. It is arranged and formed integrally.

According to the pressurized hot water storage tank of this embodiment having such a configuration, since the whole is a rectangular parallelepiped, the installation space can be effectively used.

The internal pressure of the stored hot water is applied to the side wall F.
Even if 1 to F4 try to expand toward the outside so as to increase the internal volume, the partition walls 2 and 2 pull the side wall inward so as to suppress the expansion, so that it is difficult to deform and sufficient strength is exhibited. . That is, since the partition wall 2 provided inside the hot water storage tank 10 functions as a reinforcing member, the resistance to expansion and bending is improved.

Further, since the resistance to expansion and bending is improved, the thickness of the entire hot water storage tank can be reduced, which leads to weight reduction and material cost reduction.

Although the above description describes that the partition wall 2 is formed integrally with the side wall, for example, when the entire hot water storage tank is made of stainless steel, the edges of the four sides are folded back. It is also possible to weld a separate partition wall provided with a flange to the side wall by seam welding or spot welding.

In the second embodiment shown in FIG. 2, a partition wall 20 having two through holes c is vertically arranged, and the hot water storage tank 10 is provided.
The side walls F3 and F4 of A, which face each other, the top surface U, and the bottom surface L are in contact with each other.

The second embodiment is long in the horizontal direction,
Moreover, it is applied to the hot water storage tank 10A having a small capacity.
It is also excellent in the force of suppressing the deformation of the top surface U and the bottom surface L.

In the third embodiment shown in FIG. 3, two partition walls 2 and 20 each having a through hole c are arranged so as to cross each other in the center thereof. Particularly, the top surface U and the bottom surface of the hot water storage tank 10B are arranged. Excellent in suppressing the deformation of L.

FIGS. 4 and 5 show a fourth embodiment of the present invention, and illustrate one example of a method of manufacturing a pressurized hot water storage tank according to the first embodiment of FIG. In FIG. 4, the basic unit 4 made of a pentahedron whose one surface 4a is open is manufactured by FRP (glass reinforced plastic) by the SMC (sheet mold compound) method, for example.

Next, the open surface 4 of the basic unit 4
The surface 4b facing a is not shown in the drawing at two locations, for example, a punch of a press machine is used to punch through holes 4c.
Here, the basic unit having the through holes c is defined as a basic unit 4A.

Next, the open surface 4 of the basic unit
a, or a plate-like body having an area equal to the surface 4b facing the open surface is prepared, and two through holes c are drilled in the same manner as in the case where the basic unit 4 is provided with the through holes 4c. The plate-shaped body is defined as the partition wall 2A.

Two basic units 4, one basic unit 4A, and one partition wall 2A were prepared, and the basic unit 4 with the opening surface 4a facing downward, and the opening surface 4a facing downward in the order from the top. A basic unit 4A having a through hole 4c,
Basic unit 4 with partition wall 2A and opening surface 4a facing upward
The entire hot water storage tank 10C is obtained by stacking layers and joining the surfaces in contact with each other with, for example, an adhesive for resin.
Is molded as shown in FIG.

According to the structure of the pressurizing hot water storage tank of this embodiment and the manufacturing method thereof, the basic unit 4 for molding, which is the base, can be easily subjected to the secondary processing (perforation), and the simple components are laminated and bonded. Since it can be formed in the hot water storage tank 10C by simply doing so, the manufacturing process can be simplified.

As described above, the basic unit 4, the basic unit 4A, and the partition wall 2A can be molded, which is suitable for mass production. Then, by mass production, the manufacturing cost can be further reduced.

FIGS. 6 and 7 are modifications of the above-described fourth embodiment shown in FIGS. 4 and 5, in which the same basic unit 4A is further stacked on the basic unit 4A having the through hole 4c. It is a thing. The pressurized hot water storage tank of FIGS. 6 and 7 is applied to a hot water storage tank that is particularly large in the vertical direction.

FIGS. 8 and 9 show a fifth embodiment of the present invention, which is an example of a method of manufacturing a pressurized hot water storage tank according to the first embodiment of FIG. In FIG. 8, one basic unit 4 manufactured in the fourth embodiment shown in FIGS. 4 and 5 and two basic units 4A provided with through holes 4c are newly added to the basic units 4 and 4A. A bottom plate 2B having an area equal to the area of the opening surface is prepared.

Each of the members prepared above, that is, one basic unit 4 with the opening surface 4a facing downward, two basic units 4A with through holes 4c facing the opening surface 4a downward, and one bottom plate. By arranging 2B in sequence and joining the joint surfaces with a resin adhesive, a hot water storage tank 10E as shown in FIG. 9 is completed.

Mechanical properties such as strength are similar to those of the fourth embodiment shown in FIGS. 4 and 5 described above.

10 and 11 show a sixth embodiment of the present invention, which is an example of a method of manufacturing a pressurized hot water storage tank according to the first embodiment of FIG. Then, FIG. 8 and FIG.
It is an embodiment in which the fifth embodiment is constructed upside down. In FIG. 10, one basic unit 4 manufactured in the fourth embodiment shown in FIGS. 4 and 5 and two basic units 4A provided with through holes 4c are newly added, and the basic units 4 and 4 are newly added.
A top plate 2B1 having an area equal to the area of the opening surface of A is prepared.

Each of the members prepared above, that is, one basic unit 4 with the opening surface 4a facing upward, and two basic units with the through hole 4c provided on the surface facing the opening surface 4a downward and upward. By arranging the unit 4A and one top plate 2B1 in order from the bottom to the top, and joining the joint surfaces with the resin adhesive, the hot water storage tank 10E1 as shown in FIG. 11 is completed.

The mechanical properties such as strength are similar to those of the fourth embodiment shown in FIGS. 4 and 5 or the fifth embodiment of FIGS. 8 and 9.

FIGS. 12 and 13 show a seventh embodiment of the present invention and explain another example of the method for manufacturing the pressurized hot water storage tank according to the first embodiment of FIG.

The seventh embodiment shown in FIGS. 12 and 13 is
It differs from the above-described fourth embodiment shown in FIGS. 4 and 5 in the following points. In FIGS. 12 and 13, the through hole 4 is provided in the middle.
Basic unit 4A provided with c (4th unit shown in FIGS. 4 and 5)
Instead of the basic unit used in the embodiment, a second basic unit 4D having no upper and lower surfaces 4aa is used. And, between the first basic unit 4 of the uppermost layer and the second basic unit 4D, and between the second basic unit 4D and the first basic unit 4 of the lowermost layer,
Partition walls 2A each having a through hole c are arranged. In other words, in the sixth embodiment shown in FIGS. 12 and 13, the partition walls 2A (two in total) are arranged above and below the second basic unit 4D, respectively. In this respect, the fourth embodiment shown in FIGS. 4 and 5 differs from the fact that the partition walls 2A (a total of one sheet) are arranged only on the open surface of the basic unit 4A.

Except for the above, the operation and effects are the same as those of the fourth embodiment shown in FIGS. 4 and 5 described above.

The illustrated embodiment is merely an example,
It is additionally noted that the description is not intended to limit the technical scope of the present invention.

[0043]

The effects of the present invention are listed below. (1) Since the whole is a rectangular parallelepiped, the installation space can be used effectively. (2) Since the partition wall 2A provided inside the hot water storage tank 10 functions as a reinforcing member, it has high resistance to expansion and bending. (3) By improving the resistance to expansion and bending, the thickness of the entire hot water storage tank can be reduced, leading to weight reduction and material cost reduction. (4) If the partition wall is arranged horizontally, it can be used for a stratified hot water storage tank. (5) Easy to use the basic mold forming unit 2
Subsequent processing is possible, and since the simple components can be laminated and bonded to form a hot water storage tank, the manufacturing process can be simplified. (6) Suitable for mass production because it can be molded.

[Brief description of drawings]

FIG. 1 is an explanatory view showing a first embodiment of the present invention.

FIG. 2 is an explanatory diagram showing a second embodiment of the invention.

FIG. 3 is an explanatory diagram showing a third embodiment of the invention.

FIG. 4 is a manufacturing process diagram showing a fourth embodiment of the present invention showing a case of a three-layer type.

FIG. 5 is an overall view of a three-layer type hot water storage tank completed according to a fourth embodiment of the present invention.

FIG. 6 is a manufacturing process diagram showing a fourth embodiment of the present invention, showing a case of a four-layer type.

FIG. 7 is an overall view of a 4-layer type hot water storage tank completed according to a fourth embodiment of the present invention.

FIG. 8 is a manufacturing process drawing showing the fifth embodiment of the present invention.

FIG. 9 is an overall view of a hot water storage tank completed according to a fifth embodiment of the present invention.

FIG. 10 is a manufacturing process drawing showing the sixth embodiment of the present invention.

FIG. 11 is an overall view of a hot water storage tank completed according to a sixth embodiment of the present invention.

FIG. 12 is a manufacturing process drawing showing the seventh embodiment of the present invention.

FIG. 13 is an overall view of a hot water storage tank completed according to a seventh embodiment of the present invention.

FIG. 14 is a three-dimensional view of a cylindrical type hot water storage tank according to the prior art.

15 is a diagram showing an occupied area and a dead space of the hot water storage tank of FIG.

FIG. 16 is a three-dimensional view of a rectangular parallelepiped hot water storage tank provided with a rod-shaped reinforcing member according to a conventional technique.

[Simple explanation of symbols]

10, 10A-10F ... Hot water storage tank 2, 2A, 20 ... Partition 4, 4A ... Basic unit c, 4c ... through-hole 4a ... Open surface 4b: surface facing the open surface F1-F2 ... Side wall

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Masayuki Fujimoto             1-5-20 Kaigan, Minato-ku, Tokyo Tokyo Gas             Within the corporation F-term (reference) 3L036 AB03

Claims (6)

[Claims] 1. A partition wall-shaped reinforcing member having a through hole is formed therein, and the reinforcing member is arranged so as to prevent the tank side wall from being bent in the direction of expansion due to the pressure applied in the tank. And, the through hole is configured to have a plate thickness capable of suppressing such bending, and the through hole is configured such that the reinforcing member can maintain the strength capable of suppressing the bending of the tank side wall and that hot water can flow in the hot water storage tank. Pressurized hot water storage tank that is characterized by being. 2. A basic unit manufacturing process for manufacturing a basic unit having an open surface, a through hole forming process for forming a through hole on a surface of the basic unit facing the open surface, and a through hole. A plurality of the formed units are stacked, a basic unit having no through holes is arranged above and below the stacked units, and the surfaces of the units where the through holes are not formed are the top surface and the bottom surface. The manufacturing method for manufacturing the pressurized hot water storage tank according to claim 1, further comprising a unit laminating step for arranging the stacked units and an assembling step for fixing the stacked units to each other. 3. In the unit laminating step, a flat plate having a through hole is arranged at a boundary portion between an open surface of a unit in which a through hole of a lowermost layer or an uppermost layer is not formed and an open surface of a unit adjacent to the unit. Then, in the assembling step, the flat plate having the through hole is also fixed. 4. A basic unit manufacturing step of manufacturing a basic unit having an open surface, and a through hole forming step of forming a through hole on a surface facing the open surface of the basic unit,
One of the units is stacked above the one unit with the surface on which the through-hole is formed facing up and the open surface of the other unit facing down, and the other unit is stacked above the one unit. Position the flat plate at the bottom,
The method according to claim 1, further comprising a unit laminating step of arranging a unit in which a through hole is not formed at the uppermost portion, and an assembling step of fixing a plurality of stacked units and the flat plate to each other. A manufacturing method for manufacturing a pressure hot water storage tank. 5. A basic unit manufacturing process for manufacturing a basic unit having an open surface, and a through hole forming process for forming a through hole on a surface of the basic unit that faces the open surface.
One of the units is stacked on top of the other unit with the surface on which the through hole is formed on the lower side and the open surface of the other unit on the upper side. Position the flat plate at the top,
The unit stacking step of arranging a unit in which a through hole is not formed in the lowermost part, and an assembly step of fixing a plurality of stacked units and the flat plate to each other are added. A manufacturing method for manufacturing a pressure hot water storage tank. 6. A unit manufacturing process for manufacturing a first unit having an open surface on one side and a second unit having an open surface on two sides, and the first unit for the uppermost layer and the lowermost layer.
Unit is arranged, the second unit is arranged in the middle of the unit, and the first unit arranged in the uppermost layer has a surface opposed to the open surface as the top surface, and the first unit arranged in the lowermost layer. The unit 2 is arranged such that the surface facing the open surface constitutes the bottom surface, and a unit laminating step of interposing a flat plate having a through hole between adjacent units; The method for manufacturing a pressurized hot water storage tank according to claim 1, further comprising an assembling step of fixing the flat plates to each other.