JP5713201B2 - Heat storage body, heat storage body manufacturing method, and heat storage device having heat storage body - Google Patents

Description

  The present invention relates to a heat storage body formed by enclosing a heat storage agent in a container, more specifically, a heat storage body suitable for increasing the amount of heat storage with a limited heat storage volume, a method for manufacturing the heat storage body, and such a heat storage body. The present invention relates to a heat storage device.

  A heat storage body formed by enclosing a heat storage agent in a container is well known as being used for effective use of thermal energy through heat exchange with a heat medium (water, gas, etc.) around the container, for example, It is used as a component of a cold storage (Patent Document 1), a heat storage device (Patent Documents 2 and 3), a heat storage air conditioner (Patent Document 4), and the like. Whatever the application, there is a demand for a heat storage body that has a limited heat storage volume and a larger amount of heat storage. This is because such a heat storage element ultimately contributes to downsizing and cost reduction. From this point of view, various studies have been made on the shape and material of the heat accumulator or its container, the manner in which the heat accumulator is arranged, and the like, in which the heat transfer efficiency with the surrounding heat medium is good.

  For example, Patent Document 5 describes a heat storage body in which a heat storage agent is sealed in a gap formed inside a plate-shaped container made of a soft material, and a large number of heat storage bodies are plates of individual heat storage bodies. Since it is arranged in multiple stages via convex portions on the outer surface side of the container, the amount of heat storage can be increased with a limited heat storage volume, and the adjacent heat storage body by the convex portions functioning as spacers Since the outer surfaces of the containers are not in contact with each other, the heat transfer efficiency with the surrounding heat medium can be maintained well.

  In Patent Document 6, two heat-sealable material sheets are partially heat-sealed to form a heat storage material container, and the container (heat storage body) is made uneven by devising the heat seal position, Some ideas have been proposed to prevent uneven distribution of heat storage agents. More specifically, the edges of two rectangular material sheets are sealed to each other, and the two material sheets are sealed in a band-like region extending in a direction perpendicular to the long side at a plurality of positions in the long side direction. Thus, a plurality of container portions are formed in the periphery, and two material sheets are spot-shaped sealed at the center point of each container portion to prevent the shape of each container portion from being deformed. Each container portion forms a flat portion with a large area on the upper and lower surfaces except for the spot-like seal portion.

JP 2002-130903 A JP-A-6-207748 JP 2003-329383 A JP-A-10-89732 JP-A-3-11296 JP 2001-261074 A

  Here, as in the case of Patent Document 5, the function of the convex portion provided on the outer surface side portion of the container of the heat storage body as a spacer means that a gap is formed over almost the entire area between the outer surfaces of adjacent containers. It means that. However, if a gap is formed between adjacent containers, it cannot be said that the purpose of increasing the heat storage amount with a limited heat storage volume is sufficiently achieved.

  Moreover, in order to make a plate-shaped container formed of a soft material as in the case of Patent Document 5 and to make the convex portion provided on the outer surface side portion function as a spacer, the soft material maintains the outer shape of the plate-shaped container. It must be hard enough. However, in a container formed of a material sheet as in Patent Document 6, since the material sheet is relatively soft, even if a convex portion is provided on the outer surface side of the container, the container functions as a spacer. The outer surfaces of adjacent containers are in wide contact with each other, there is no gap between the outer surfaces, the contact area with the heat medium around the container is reduced, and the heat with the heat medium There is a risk that the heat transfer efficiency is greatly reduced due to non-uniform replacement.

  In order to increase the amount of heat storage with a limited heat storage volume, it is inevitable that the outer surfaces of adjacent containers are in contact with each other to some extent when stacking a large number of heat storage bodies at a higher density. In addition, it is necessary to devise a method for ensuring a certain contact area with the heat medium around the container, maintaining uniformity of heat exchange with the heat medium, and avoiding a decrease in heat transfer efficiency.

  The present invention has been made in view of the above circumstances and problems, and the effective surface area of the container in contact with the heat storage agent is large, and the heat exchange efficiency with the heat medium around the container is excellent, or the heat exchange is entirely performed. As a uniform heat storage body, or a heat storage body capable of increasing the amount of heat storage with a limited heat storage volume or suitable for multi-layered arrangement, a method of manufacturing the heat storage body, and a heat storage device having such a heat storage body The purpose is to provide.

According to the present invention, the above-described object is achieved by the following first to fourth inventions regarding a heat storage body, a method for manufacturing the heat storage body, and a heat storage device.

<Heat storage body>
First invention:
In a heat storage body in which a heat storage agent is sealed in a sealed container formed in a flat rectangular bag shape by stacking flexible sheet-like packaging materials, the overlapping packaging materials are in a region surrounded by the periphery. The non-seal band between adjacent line seal portions is sealed by a plurality of line seal portions each having an inclination with respect to one side of the peripheral edge of the packaging material and arranged in parallel in the direction of the one side. A heat storage agent-enclosed cylindrical shape in which a plurality of continuous seals are formed in the arrangement direction of the line seal portions, and a heat storage agent is enclosed between packaging materials that overlap each other in any non-seal band, and bulges out on the outer surface of the packaging material A plurality of heat storage agent-enclosed cylindrical portions, and a heat storage agent enclosure region in which the plurality of heat storage agent-enclosed cylindrical portions form a group, a portion where the heat storage agent is not encapsulated, or a heat storage agent is encapsulated to a degree that can be bent. And the connection area that connects the heat storage agent enclosure areas The connecting area has a width in the one side direction that can be bent at a line segment in a direction perpendicular to the one side without interfering with an adjacent heat storage agent enclosure area. A heat storage body characterized by that.

<Manufacturing method of heat storage body>
Second invention:
In a manufacturing method of a heat storage body in which a heat storage agent is sealed in a sealed container formed in a flat rectangular bag shape by stacking flexible sheet-like packaging materials, the overlapping packaging materials are used as injection ports. A plurality of line seal portions that seal the opening edge except the portion and have an inclination with respect to one side of the peripheral edge of the packaging material in the region surrounded by the peripheral edge and are arranged in parallel in the direction of the one side. A plurality of non-seal bands between adjacent line seal parts are formed continuously in the arrangement direction of the line seal parts, and a heat storage agent is sealed from the inlet between the packaging materials overlapping with any non-seal band. Forming a plurality of heat storage agent-enclosed cylindrical portions that protrude in a convex shape on the outer surface of the material, and forming a heat storage agent-enclosed area in which the plurality of heat storage agent-enclosed cylindrical portions form a group; The heat storage agent is sealed to the extent that it is not bent or bent The above-mentioned one side that can bend the connection area by a line segment in a direction perpendicular to the above-mentioned one side without interfering with the adjacent heat-storage agent enclosure area. The method of manufacturing a heat storage body, wherein the step of forming over the width in the direction is sequentially repeated, and then the inlet is sealed and sealed.

Third invention:
In the method of manufacturing a heat storage body in which a heat storage agent is sealed in a sealed container formed in a flat rectangular bag shape by stacking flexible sheet-like packaging materials,
Sealing the opening edge except for some of the overlapping packaging materials as an inlet, and a first line seal portion having an inclination with respect to one side of the periphery of the packaging material in the region surrounded by the periphery Adjacent line seals are formed by enclosing a heat storage agent from the injection port between the overlapping packaging materials to form and forming a second line seal part parallel to the first line seal part with a distance in the direction of the one side. A heat storage agent is enclosed in a non-seal band between the parts, and a heat storage agent-enclosed cylindrical portion that bulges out on the outer surface of the packaging material is formed, and the step of forming the heat storage agent-enclosed cylindrical portion is repeated, A plurality of the heat storage agent-enclosed cylindrical portions are continuously formed in the direction of the one side, and a step of forming a heat storage agent-enclosed area in which the plurality of heat storage agent-enclosed cylindrical portions form a group, and a heat storage agent is enclosed Thermal storage agent at the part where the thermal storage agent is enclosed to the extent that it is not bent or bent The connection area connecting the entrance areas is formed across the width in the one side direction so that the connection area can be bent at a line segment perpendicular to the one side without interfering with the adjacent heat storage agent enclosure area. The method of manufacturing a heat storage body characterized by sealing the said inlet and sealing after repeating the process to perform sequentially.

<Heat storage device>
Fourth invention:
In the state where the heat storage body of the first invention is folded back at the connecting portion, the heat storage agent enclosure regions are sequentially stacked in the heat storage tank, and the inclination angle of the line seal portions between the heat storage agent enclosure regions located adjacent to each other is reversed. A heat storage device characterized by that.

<How to use heat storage>
The heat storage body of the first invention and the heat storage body obtained by the second or third invention are used in the following manner to form the heat storage device of the fourth invention.

  In the heat storage tank, a bellows shape is formed so as to be folded one after another at the connecting portion, and the heat storage body is disposed so that the heat storage agent enclosure regions are arranged to overlap each other. Adjacent heat storage agent enclosing areas come to reverse the inclination of each other's line seal part, so that each heat storage agent enclosing cylindrical part intersects and contacts only in a narrow point-like range, and other wide The range comes to form a space without contact. Thus, heat exchange with the heat medium is effectively performed, and the shape of the heat storage body is stably maintained even in a state in which the heat storage agent enclosure regions are arranged to overlap each other.

  In the present invention, as described above, since the inclination angle of the line seal portion is reversed in the layer adjacent to the heat storage body disposed so as to be overlapped in the heat storage tank, the points where the cylindrical portions of the heat storage agent enclosure intersect each other. As a result of forming a space between the layers by contacting only in a narrow area and non-contacting in a wide area, the effective contact area between the heat medium filling the space and the heat storage body is wide, and the flow of the heat medium The heat transfer characteristics at the time of heat exchange are excellent, and the heat storage body that contains the heat storage agent can be manufactured at low cost, and the heat storage amount can be increased with a limited heat storage volume. In combination with this, the cost of arranging the heat storage body in the heat storage tank is also low.

  In addition, since the packaging material which forms the thermal storage body which concerns on this invention is relatively soft, it is easy to deform | transform. Therefore, for example, when the heat storage bodies are arranged in multiple layers in the atmosphere, the packaging material forming the container is deformed by the heat storage agent in the container that receives gravity, and the contact area between adjacent containers increases, There is a possibility that the flow of the heat medium is uneven. On the other hand, when the heat accumulators are stacked and arranged in multiple stages in the liquid, the influence of gravity is mitigated by buoyancy, so that such a possibility is less likely to occur. In this sense, the case where the heat medium around the heat storage body is a liquid is more preferable in the present invention than the case where the heat medium is a gas.

The thermal storage body of 1st embodiment of this invention is shown, (A) is a top view, (B) is BB sectional drawing in (A), (C) is a perspective view which abbreviate | omits a peripheral seal part, (D) These are the partial expanded sectional views shown with the same as (B) about a part of thermal storage body. FIG. 1 shows a manufacturing procedure of the heat storage body of FIG. 1, (A) is a perspective view showing two packaging materials before sealing, and (B) shows a peripheral seal part and a line seal part except for a part of unsealed parts. It is a figure which shows the state which forms and inject | stores a thermal storage agent from an unsealed part. The state which has laminated | stacked the thermal storage body of FIG. 1 in the thermal storage tank (not shown) is shown, (A) is a top view, (B) is BB sectional drawing in (A) (C) is CC in (A). It is sectional drawing. It is a perspective view which shows the thermal storage body of 2nd embodiment.

  Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

<First embodiment>
FIG. 1 shows a heat storage body of the present embodiment, (A) is a plan view, (B) is a BB cross-sectional view in (A), (C) is a perspective view of the heat storage body shown by omitting a peripheral seal part, (D) is a partial expanded sectional view in the same position as (B) about a part of heat storage object.

  The heat storage body 1 of the present embodiment seals two flexible packaging materials 2 in the form of a sealable rectangular sheet to form a single sealed bag-like container, and encloses the heat storage agent therein. It is formed by. Here, the wrapping material may be two separate wrapping materials before sealing, or a single wrapping material may be bent and overlapped at the center position. When forming a sealed bag shape with a single packaging material, after sealing the side edges of the packaging material into a cylindrical shape, it is possible to make a sealed bag shape by sealing both ends of the opening. The seal part of side edges may be located in the side edge part or center part of a rectangular bag shape. Further, at that time, the side edges may be in the form of so-called palm attachment in which the surfaces on the same side of the packaging material are brought into contact with each other or in the form of so-called envelope attachment in which they are overlapped. Furthermore, it can also be set as a sealed bag shape by sealing the opening both ends of the packaging material which makes a cylindrical shape from the beginning. The packaging material may have a sealant layer that can be sealed on one or both sides of the base layer, or the packaging material itself may be sealed, and is appropriately selected depending on the form of sealing and the sealing means. That's fine. Further, the sealing means is not limited to the kind thereof, and may be any of heat sealing, high frequency sealing, ultrasonic sealing or sealing by adhesion. In this embodiment, an example of sealing a packaging material having a sealant layer by heat sealing. I will proceed with the explanation.

  As shown in FIG. 1 (A), the two packaging materials 2 forming the heat storage body 1 have their peripheral edges sealed by a peripheral seal part 3 to form a sealed bag shape, and the peripheral seal part. In the range surrounded by 3, a plurality of line seal portions in a state in which one side of the periphery, that is, in the case shown, has an inclination angle θ with respect to the long side and is arranged in parallel in the direction in which the long side extends. 4 is formed. The ends of the plurality of line seal portions 4 are close to the long side of the peripheral seal portion 3 but are not connected to the peripheral seal portion 3 and are slightly unsealed between the peripheral seal portions 3. A portion 4A is formed. Adjacent line seal portions 4 are in a non-seal zone 5 (see FIG. 2 (B) showing the state before enclosing the heat storage agent), and communicated by the non-seal portion 4A at the end of the line seal portion 4. Yes. Inside the non-seal band 5, a heat storage agent having fluidity is injected, and the outer surface of the packaging material 2 is convex as seen in FIGS. 1 (B), (C), (D). A swelled heat storage agent-filled cylindrical portion 6 is formed. When the heat storage agent is injected into the non-seal zone 5, the heat storage agent flows into the adjacent non-seal zone 5 one after another through the non-seal portion 4 </ b> A so as to fill the entire non-seal zone 5.

  Thus, in the heat storage body 1 of the present embodiment, in the state where the heat storage agent is injected into the non-seal band 5, as shown in the drawing, the plurality of heat storage agent-enclosed cylindrical portions 6 are arranged at an oblique angle θ with respect to the long side. Will be formed.

  Next, the manufacturing procedure of the heat storage body of this embodiment will be described.

  (1) First, as shown in FIG. 2 (A), two sheets of packaging material 2 having a sealant layer 2B capable of heat sealing formed on a base material layer 2A having the same shape and the same dimensions are prepared. It arrange | positions so that 2B may face each other.

  (2) Next, in a state where the two packaging materials 2 are overlapped, the peripheral edges are sealed except for a part (for example, the short side at the right end in FIG. 2B), and the peripheral seal portion 3 A plurality of line seal portions 4 are formed in a range surrounded by the peripheral edge at the same time as or before and after that. In this embodiment, the sealing is performed by heat sealing, for example, as described above. A part of the peripheral edge that is not sealed remains as an unsealed portion 3A. The unsealed portion 3A may extend over the entire width of the short side at the right end or may be a part of the short side. The unsealed portion is for injecting the heat storage agent described below, and may be sufficient for the injection. Therefore, without leaving the unsealed portion 3A, including the short side, the peripheral seal portion 3 is formed over the entire circumference, and the injection needle is inserted into one place of the non-seal band 5 to inject the heat storage agent, Sealing may be performed to close the needle hole drilled by the injection needle.

  (3) Next, the heat storage agent is injected from the unsealed portion 3A from the direction of the arrow shown in FIG. The heat storage agent passes through the non-seal portion 4A between the end of the line seal part 4 and the peripheral seal part 3, and is filled in the non-seal band 5 adjacent to each other. Thereafter, the unsealed portion 3A on the short side is also sealed and sealed so that the heat storage agent does not leak out. At that time, the end region between the line seal portion 4 located at both ends in the long side direction and the portion on the short side of the peripheral seal portion 3 may be sealed or not sealed with the heat storage agent. FIGS. 1B and 1C show an example in which no heat storage agent is sealed in the end region. When the heat storage agent is sealed in the end region, the heat storage amount of the heat storage body increases accordingly. Thus, the heat storage body 1 shown in FIG. 1 is obtained.

  Next, a heat storage device using the heat storage body of the present embodiment will be described. A plurality of heat storage elements 1 obtained as described above are prepared and arranged in a heat storage tank (not shown) to form a heat storage device. The arrangement | positioning is performed so that the inclination | tilt angle of the thermal storage agent enclosure cylindrical part 6 of the adjacent thermal storage body 1 may become reverse direction. When the heat storage bodies adjacent to each other (two heat storage bodies in total) are used as the unit structure, the heat storage device can be grasped as a stack of the unit structures in the heat storage tank.

  The state in the case of arrange | positioning a thermal storage body up and down is shown in FIG. As shown in FIG. 3, all the heat storage bodies 1 are positioned below the heat storage bodies 1 adjacent to each other in the vertical direction (line seal portion 4 of the heat storage body 1 positioned above in FIG. 3A is a solid line). The line seal portion 4 of the heat storage body 1 is indicated by a broken line.) The heat storage agent-enclosed cylindrical portions 6 having an inclination angle θ in the opposite direction are in contact with each other only in a narrow point P (see FIG. 3 (A) and (B)), a space S is formed in another wide range (see FIG. 3C), and heat exchange is performed with a wide contact area with the heat medium flowing into the space S. Moreover, since the upper and lower heat accumulators 1 are only in contact with each other in a narrow range of points, the circulation of the heat medium is good in the surrounding space S. Even if the contact is made in the linear portion even in a narrow range, even if the contact area is not so small, the heat medium is blocked by the linear portion and the flowability is inhibited. Therefore, contact in a narrow point-like range P is superior to contact in a linear portion in this respect as well. Similarly, in the case where the heat storage bodies are arranged in a horizontal direction, a space S is formed in a wide range between the heat storage agent-enclosed cylindrical portions 6 and heat exchange can be performed with a heat medium with a wide contact area. The flowability of the medium can be kept good.

<Second embodiment>
This embodiment is formed by connecting a plurality of heat storage bodies of the previous embodiment in the arrangement direction of the line seal portions, and has a plurality of groups of heat storage agent-enclosed cylindrical portions, and a group of heat storage agent-enclosed cylindrical portions. (Heat storage agent enclosure area) is connected to each other at a portion where the heat storage agent is not sealed or a portion where the heat storage agent is sealed to the extent that it can be bent.

  FIG. 4 showing this embodiment is a view corresponding to FIG. 1C of the previous embodiment.

  In FIG. 4, the heat storage body 1 forms the heat storage agent enclosure area 7 by the group of the heat storage agent enclosure cylinder parts 6 which have a plurality of heat storage agent enclosure cylinder parts 6 continuously, It is connected by a connection region 8 formed by a portion where the heat storage agent is not sealed or a portion where the heat storage agent is sealed so as to be bent.

  The inclination angle θ of the heat storage agent-enclosed tubular portion 6 in the heat storage agent enclosure region 7 is the same for all the heat storage agent enclosure regions 7. The width of the connection area 8, that is, the distance between the adjacent heat storage agent enclosure areas 7 is within the range of the connection area 8 with respect to one side of the heat storage body 1 extending in the arrangement direction of the heat storage agent enclosure cylindrical portions 6. Even if the line segment in the perpendicular direction is bent as the folding line X, the line segment does not interfere with the heat storage agent enclosing region 7.

  The heat storage body 1 according to this embodiment is bent so that the folding line X is positioned in the range of the connection region 8, and the heat storage agent enclosure regions 7 are sequentially stacked in the heat storage tank. Since the adjacent heat storage agent enclosure area 7 is bent at the folding line X in the connection area 8, the heat storage agent enclosure cylindrical portion 6 is positioned so as to have an inclination angle θ opposite to each other, As in the case of the previous embodiment, contact is made only within a narrow point-like range. Thus, as in the case of the previous embodiment, heat exchange with the heat medium can be performed with a wide contact area, and the flowability of the heat medium is kept good. Furthermore, according to this embodiment, since the heat storage body 1 is continuously formed integrally by the connection area 8, handling is convenient.

  In either case of the first embodiment and the second embodiment of the present invention, the heat storage tank is connected to the refrigerator and the air conditioner, and the heat medium in the heat storage tank is between the refrigerator and the air conditioner. Each can be circulated and can be circulated alternately for air conditioning.

  In the present invention, the heat accumulators may be directly stacked as described above. However, when the number of the heat accumulators increases, the heat medium is passed through to ensure the support and facilitate the handling. It may be placed in a storage bowl-like container that can be stacked.

  In the present invention, an aqueous solution of a quaternary ammonium salt such as an alkylammonium salt such as tetra-n-butylammonium bromide (TBAB) that is cooled to produce a hydrate is used as the heat storage agent sealed in the heat storage body. It is preferable because it has high latent heat storage performance and can be stored by cooling at a temperature higher than 0 ° C. In addition, water is often used as a heat medium. However, when the tetra-n-butylammonium bromide aqueous solution or the like is used as a heat storage agent, the heat storage body enclosing the heat storage agent in the heat medium does not float. The heat accumulators can be arranged in multiple stages without any problem.

DESCRIPTION OF SYMBOLS 1 Thermal storage body 2 Packaging material 3 Peripheral seal part 4 Wire seal part 5 Non-seal band 6 Thermal storage agent enclosure cylindrical part 7 Thermal storage agent enclosure area 8 Connection area (theta) Tilt angle

Claims (4)

In a heat storage body in which a heat storage agent is enclosed in a sealed container formed into a flat and rectangular bag shape by overlapping flexible sheet-like packaging materials,
The overlapping packaging materials are respectively sealed by a plurality of line seal portions that are inclined with respect to one side of the peripheral edge of the packaging material in a region surrounded by the peripheral edges and arranged in parallel in the direction of the one side, A plurality of non-seal bands between adjacent line seal parts are continuously formed in the arrangement direction of the line seal parts, and a heat storage agent is sealed between the packaging materials overlapping with any non-seal band. A plurality of heat storage agent-enclosed cylindrical portions that bulge in a convex shape on the outer surface of the heat storage agent, and a plurality of the heat storage agent-enclosed cylindrical portions form a group, and the heat storage agent is not enclosed And a connection region that connects the heat storage agent-enclosed areas in a part or a part in which the heat storage agent is enclosed to the extent that it can be bent, and the connection area does not interfere with the adjacent heat storage agent-enclosed area In addition, the connection area can be bent along a line segment perpendicular to the one side. Regenerator, characterized in that it has a width of one side direction. In the method of manufacturing a heat storage body in which a heat storage agent is sealed in a sealed container formed in a flat rectangular bag shape by stacking flexible sheet-like packaging materials,
The overlapping wrapping materials are sealed at the edge of the opening except for a part serving as an inlet, and have an inclination with respect to one side of the rim of the wrapping material in the region surrounded by the rim, with an interval in the direction of the one side. A plurality of non-seal bands between adjacent line seal parts are continuously formed in the arrangement direction of the line seal parts by a plurality of line seal parts arranged in parallel, and between the packaging materials overlapping with any non-seal band A plurality of heat storage agent-encapsulated cylindrical portions that enclose the heat storage agent from the inlet and bulge in a convex shape on the outer surface of the packaging material, and the plurality of heat storage agent-enclosed cylindrical portions form a group The process of forming the area and the connection area connecting the heat storage agent enclosure areas in the part where the heat storage agent is not enclosed or the part where the heat storage agent is enclosed to the extent that it can be bent Connected with a line segment perpendicular to the above side without interfering with After sequentially repeating the step of forming the over bent possible the one side direction of the width, the manufacturing method of the heat storage body, characterized in that the sealing seals the inlet. In the method of manufacturing a heat storage body in which a heat storage agent is sealed in a sealed container formed in a flat rectangular bag shape by stacking flexible sheet-like packaging materials,
Sealing the opening edge except for some of the overlapping packaging materials as an inlet, and a first line seal portion having an inclination with respect to one side of the periphery of the packaging material in the region surrounded by the periphery Adjacent line seals are formed by enclosing a heat storage agent from the injection port between the overlapping packaging materials to form and forming a second line seal part parallel to the first line seal part with a distance in the direction of the one side. A heat storage agent is enclosed in a non-seal band between the parts, and a heat storage agent-enclosed cylindrical portion that bulges out on the outer surface of the packaging material is formed, and the step of forming the heat storage agent-enclosed cylindrical portion is repeated, A plurality of the heat storage agent-enclosed cylindrical portions are continuously formed in the direction of the one side, and a step of forming a heat storage agent-enclosed area in which the plurality of heat storage agent-enclosed cylindrical portions form a group, and a heat storage agent is enclosed Thermal storage agent at the part where the thermal storage agent is enclosed to the extent that it is not bent or bent The connection area connecting the entrance areas is formed across the width in the one side direction so that the connection area can be bent at a line segment perpendicular to the one side without interfering with the adjacent heat storage agent enclosure area. The method of manufacturing a heat storage body characterized by sealing the said inlet and sealing after repeating the process to perform sequentially. The heat storage body according to claim 1 is placed in a state where the heat storage agent enclosure regions are sequentially overlapped in a state where the heat storage body is folded back at the connecting portion, and the inclination angle of the line seal portions between the heat storage agent enclosure regions located adjacent to each other is reversed. A heat storage device characterized by being oriented.

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