JP2018054231A - Cold storage material - Google Patents

Abstract

The present invention provides a regenerator material that can be easily shaped and thinned in a more complicated shape than conventional ones, and can suppress deformation and expansion during freezing. A cold storage heat material (1) comprising a container (10) and a cooling medium (20) enclosed in the container (10). The container 10 includes a main body 11 that is a sheet molded product and a lid 12 that is a flexible sheet or a sheet molded product. The main body portion 11 includes a bottom wall portion 11a, a peripheral wall portion 11b erected around the bottom wall portion 11a, and an opening portion 11c defined by the peripheral wall portion 11b, and the cooling medium 20 is accommodated therein. The opening portion 11 c is sealed by the lid portion 12. [Selection] Figure 2

Description

  The present invention relates to a cold storage heat material used for heat insulation or cold insulation.

  2. Description of the Related Art Conventionally, a plate-like hollow body container made of a blow-molded product is known as a cold storage container filled with a cold storage agent (see, for example, Patent Document 1 below). Conventionally, a cold insulation material in which a cold insulation composition is housed and sealed in a flexible plastic bag is known (see, for example, Patent Document 2 below).

JP 2004-293841 A JP 2005-53938 A

  The conventional cool storage material provided with the cool storage agent container made of a blow-molded product as described in Patent Document 1 can maintain a certain shape during use, and has durability that can withstand repeated use. There are advantages. On the other hand, due to the limitations of blow molding, it is difficult to mold a complex shape or thin the molded product.

  Moreover, the conventional cold insulation material using the flexible plastic bag as described in the said patent document 2 is easy to deform | transform compared with the cool storage material provided with the container of the above-mentioned blow molded product. Such a conventional cold insulating material is not easy to use because it is easily frozen by being deformed into an unintended shape and is easily expanded when frozen.

  The present invention has been made in view of the above problems, and provides a regenerator heat material that can be more easily shaped and thinner than conventional shapes and can suppress deformation and expansion during freezing. With the goal.

  In order to achieve the above object, a regenerator material according to the present invention is a regenerator material comprising a container and a refrigerating medium enclosed in the container, and the container can be a main body part that is a sheet molded product. A lid portion that is a flexible sheet or a sheet molded product, and the main body portion includes a bottom wall portion, a peripheral wall portion standing around the bottom wall portion, and an opening defined by the peripheral wall portion. And the cooling medium is accommodated and the opening is sealed by the lid.

  A cold storage medium that exhibits a cold insulation function or a thermal insulation function is accommodated inside the container of the cold storage heat material of the present invention. The container includes a main body portion that is a sheet molded product and a lid portion that is a sheet molded product. Sheet molded products can be easily molded in a complicated shape or thinned as compared with blow molded products. Therefore, according to the present invention, it is possible to provide a regenerator material that can be more easily shaped and thinner than conventional ones.

  In the regenerator material of the present invention, the main body portion of the container includes a bottom wall portion and a peripheral wall portion erected around the bottom wall portion. The peripheral wall portion defines an opening of the main body portion at the end opposite to the bottom wall portion. A lid is joined to the end of the peripheral wall defining the opening over the entire circumference of the opening. That is, in the container, the peripheral wall portion of the main body portion is reinforced by the bottom wall portion and the lid portion connected to one end and the other end in the direction intersecting the bottom wall portion, and the strength is improved. Moreover, a bottom wall part and a cover part are reinforced by the surrounding wall part connected to these peripheral parts, and intensity | strength improves.

  Therefore, according to the present invention, unlike the conventional cold insulation material using a flexible plastic bag, it is possible to ensure the strength with which the container can maintain a certain shape and to suppress deformation and expansion during freezing. It is possible to provide a regenerative heat storage material that can be used.

  The main body may include a foamed resin layer, and the lid may include a non-foamed resin layer. In this case, the body portion of the container is opposed to the article when the article that dislikes a rapid temperature change is kept cold or insulated by the cold storage heat material. Thereby, the rapid temperature change of articles | goods can be suppressed by the heat insulation of the main-body part containing a foamed resin layer. In addition, before the article is cooled or kept warm by the cold storage material, the cold medium contained in the cold storage material container is cooled or heated through a lid including a non-foamed resin layer having a higher thermal conductivity than the foamed resin. Can be warmed. Thereby, the cooling efficiency or heating efficiency of the cooling medium can be improved. The main body portion can be made of a single foamed resin layer, and the lid portion can be made of a single non-foamed resin layer.

  The main body portion may include a non-foamed resin layer, and the lid portion may include a foamed resin layer. In this case, for example, when the article that dislikes a rapid temperature change is kept cold or kept warm by the cold storage heat material, the lid portion of the container is opposed to the article. Thereby, the rapid temperature change of articles | goods can be suppressed by the heat insulation of the cover part containing a foamed resin layer. In addition, before the article is kept cold or warmed by the cold storage material, the cold medium contained in the cold storage material container is cooled or heated through the main body including the non-foamed resin layer having a higher thermal conductivity than the foamed resin. Can be warmed. Thereby, the cooling efficiency or heating efficiency of the cooling medium can be improved. The main body portion can be made of a single non-foamed resin layer, and the lid portion can be made of a single foamed resin layer.

  The main body and the lid may include a non-foamed resin layer. In this case, heat can be transferred through the container more efficiently than in the case where the main body portion or the lid portion is made of foamed resin. Moreover, compared with the case where a main-body part or a cover part consists only of a foamed resin layer, it becomes possible to improve the density of a container and to improve an intensity | strength.

  In addition, the container may include an accommodating part defined by the bottom wall part, the peripheral wall part, and the lid part, and a partition part that partitions the accommodating part into a plurality of sub-accommodating parts. Thereby, for example, it is possible to store a cooling medium in some sub-accommodating parts, accommodate air or other gas in other sub-accommodating parts, or accommodate different cooling media in each sub-accommodating part. become.

  In this case, the plurality of sub-accommodating portions include at least one sub-accommodating portion adjacent to one side of the peripheral wall portion, and at least one sub-accommodating portion spaced from the one side of the peripheral wall portion. be able to. More specifically, the container may have a rectangular flat plate shape. In this case, it may have at least one sub-accommodating portion adjacent to one side of the peripheral wall portion that is rectangular in plan view, and at least one sub-accommodating portion spaced from the one side of the peripheral wall portion. The cold storage heat material having such a configuration is difficult to manufacture with a conventional blow molded product that is molded by blowing air from one side of a container. On the other hand, the cold storage heat material of the said structure can be obtained easily by using the main-body part which is a sheet molded product.

  For example, the plurality of sub-accommodating portions may be provided in a multiple ring shape defined by the partition wall portions continuous along the peripheral wall portion. In this case, the strength of the container can be improved by forming a plurality of annular partition walls in a multiple manner from the central part to the peripheral part of the container. Moreover, each sub accommodating part can be arrange | positioned with sufficient balance to the whole container. In addition, when the container has a rectangular flat plate shape, the plurality of sub-accommodating portions includes one sub-accommodating portion adjacent to the four sides of the rectangular peripheral wall portion in plan view, and four sides of the peripheral wall portion. A plurality of the sub-accommodating portions spaced apart from each other.

  Further, the plurality of sub-accommodating portions may be provided in a layered manner partitioned by the partition wall portions that continue along the bottom wall portion. Accordingly, different cooling mediums are accommodated in the plurality of sub-accommodating parts stacked in the direction intersecting the bottom wall part, or the cooling mediums are selectively accommodated in several sub-accommodating parts, and other sub-accommodating parts are accommodated. It is possible to accommodate air or other gas in the part.

  Moreover, the said accommodating part may have a 1st sub-accommodating part and a 2nd sub-accommodating part. In this case, each of the first sub-accommodating portion and the second sub-accommodating portion protrudes in a second direction intersecting the first direction from the base portion extending from the base portion, respectively. A plurality of projecting portions, the base portions of each other are opposed to the second direction, and the projecting portions of each other are alternately arranged in the first direction. Thus, by arranging the comb-shaped first sub-accommodating portion and the comb-shaped second sub-accommodating portion so as to mesh with each other, the first sub-accommodating portion and the second sub-accommodating portion. Can increase the area adjacent to each other and increase the transfer of thermal energy between them.

  In this configuration, when the container has a rectangular flat plate shape, the plurality of sub-accommodating portions can include one first sub-accommodating portion and two second sub-accommodating portions. More specifically, the one first sub-accommodating portion may be adjacent to two opposing sides of the rectangular peripheral wall portion in plan view. Further, each of the two second sub-accommodating portions is not adjacent to the two opposite sides of the rectangular peripheral wall portion in plan view, and the two peripheral sub-accommodating portions sandwich the first sub-accommodating portion. One of the other two opposite sides can be adjacent to the other.

  Similarly, when the container has a rectangular flat plate shape, the plurality of sub-accommodating portions can include one second sub-accommodating portion and two first sub-accommodating portions. More specifically, the one second sub-accommodating portion may be adjacent to two opposing sides of the rectangular peripheral wall portion in plan view. Further, the two first sub-accommodating portions are not adjacent to the two opposing sides of the rectangular peripheral wall portion in plan view, and the other one of the peripheral wall portions is sandwiched between the second sub-accommodating portions. The two sides facing each other can be adjacent to each other.

  The accommodating portion includes a first sub-accommodating portion and a second sub-accommodating portion, and the first sub-accommodating portion is surrounded by the annular portion and the annular portion continuous along the peripheral wall portion. The second sub-accommodating part may be surrounded by the annular part and the transverse part. Thus, the first sub-accommodating portion is disposed on the peripheral edge of the container, the second sub-accommodating portion is disposed on the inner side thereof, and the adjacent areas of the first sub-accommodating portion and the second sub-accommodating portion are disposed. Can be secured sufficiently. In addition, when the container has a rectangular flat plate shape, the plurality of sub-accommodating portions includes one sub-accommodating portion adjacent to the four sides of the rectangular peripheral wall portion in plan view, and four sides of the peripheral wall portion. A plurality of the sub-accommodating portions spaced apart from each other.

  The cooling medium includes a first cooling medium and a second cooling medium having different melting points or freezing points, and the first cooling medium and the second cooling medium are accommodated in the sub-accommodating portions different from each other. Can be. In this case, for example, the melting point or freezing point of the first cooling medium can be made higher than the melting point or freezing point of the second cooling medium.

  Thus, when the temperature of the regenerator material is set to a temperature lower than the melting point or freezing point of the first cooling medium and higher than the melting point or freezing point of the second cooling medium, the first cooling medium becomes a solid phase, The cold medium of 2 becomes a liquid phase. By using the cold storage heat material in this state, the temperature change of the liquid phase second cold medium can be suppressed by the latent heat of the solid phase first cold medium. Furthermore, since the specific heat of the second cold medium in the liquid phase is larger than that in the case where the second cold medium is a solid phase, the temperature change of the second cold medium is suppressed, and the temperature of the regenerator material is stable. To do.

  Further, the first cooling medium and the second cooling medium may be colored in different colors, and at least one of the main body and the lid may have transparency capable of distinguishing the different colors. . Thereby, the position of the 1st cooling medium and the 2nd cooling medium accommodated in the container through at least one of a main-body part or a lid | cover can be visually recognized, and a cool storage heat material can be arrange | positioned appropriately. In addition, the amount of the first cooling medium and the second cooling medium in the container can be confirmed through at least one of the main body or the lid, and the expiration date of the cold storage material can be managed.

  Further, the thermal conductivity of the main body portion and the thermal conductivity of the lid portion may be different. Thereby, precooling or preheating of the cooling medium inside the container can be efficiently performed by cooling or heating the portion having a relatively high thermal conductivity of the container. Moreover, it becomes possible to suppress the rapid temperature change of the said goods by making the part with the relatively low heat conductivity of a container oppose the articles | goods which hold | maintain cold preservation or heat insulation.

  In addition, at least one of the main body portion and the lid portion may have a laminated structure in which a plurality of resin layers are laminated. Thereby, in at least one of the main body portion and the lid portion having a laminated structure, the strength can be improved and the thermal conductivity can be adjusted. The plurality of resin layers constituting the laminated structure include, for example, a plurality of foamed resin layers not including a non-foamed resin layer, a plurality of non-foamed resin layers not including a foamed resin layer, or at least one foamed resin layer and at least one layer. The non-foamed resin layer.

  In the laminated structure, at least the resin layer exposed to the outside of the container may be a non-foamed resin layer. Thereby, the puncture intensity | strength of the container of a cool storage heat material can be improved. In addition, for example, even if moisture condenses on the outer surface of the container during pre-cooling of the regenerator material, and the condensed moisture freezes, the regenerator material is fixed to another regenerator material or freezer. It can be easily peeled off from other regenerative heat storage materials and freezers, and damage to the container can be prevented.

  According to the regenerator material of the present invention, it is possible to provide a regenerator material that can be more easily shaped and thinner than conventional ones, and can suppress deformation and expansion during freezing.

The perspective view of the cool storage heat material which concerns on Embodiment 1 of this invention. Sectional drawing which follows the II-II line of the cool storage heat material shown in FIG. The top view of the cool storage heat material which concerns on Embodiment 2 of this invention. Sectional drawing which follows the IV-IV line of the cool storage heat material shown in FIG. The top view of the cool storage heat material which concerns on Embodiment 3 of this invention. The top view which shows the modification of the cool storage heat material shown in FIG. The top view of the cool storage heat material which concerns on Embodiment 4 of this invention. The top view of the cool storage heat material which concerns on Embodiment 5 of this invention. Sectional drawing which follows the IX-IX line of the cool storage heat material shown in FIG. Sectional drawing of the cool storage heat material which concerns on Embodiment 6 of this invention. The top view which shows the modification of the container of the cool storage heat material shown in FIG.

  Hereinafter, an embodiment of a regenerator material according to the present invention will be described with reference to the drawings.

[Embodiment 1]
FIG. 1 is a perspective view of a regenerator material 1 according to Embodiment 1 of the present invention. 2 is a cross-sectional view taken along the line II-II of the regenerator material 1 shown in FIG. The cold storage heat material 1 of this embodiment is accommodated in boxes and cases together with articles such as foods, beverages, and medicines, and is used to keep these articles cool or warm.

  The regenerator material 1 includes a container 10 and a cold medium 20 enclosed in the container 10. The container 10 has a main body 11 that is a sheet molded product and a lid 12 that is a flexible sheet or a sheet molded product. The main body 11 has a rectangular flat plate-shaped bottom wall 11a, a rectangular annular peripheral wall 11b erected around the bottom wall 11a, and an opening 11c defined by the peripheral wall 11b. The cooling medium 20 is accommodated and the opening 11 c is sealed by the lid 12.

  Here, the sheet molded product is a molded product manufactured by sheet molding for molding a sheet-like material. The sheet-like material means a material that is extremely thin compared to the width direction and the longitudinal direction. The sheet molded product includes a molded product obtained by molding a sheet-like material by, for example, thermoforming, vacuum forming, or pressure forming.

  That is, sheet molding is different from primary molding such as blow molding using a molding material or liquid resin, casting, extrusion, etc., and a sheet-shaped material that is a primary molded product is heated to a temperature equal to or higher than the softening point. Secondary molding to change the shape. Sheet molding is suitable for producing a molded product having a complicated shape and thin thickness by deforming a sheet-like material.

  The sheet molded product is a molded body or a resin body that is made of a sheet-like material, has a thickness that is twice or less the thickness of the material, and has a predetermined three-dimensional shape transferred thereto. In other words, the main body part and the lid part, which are sheet molded products, are thin molded articles or resin bodies having a thickness not more than twice the thickness of the sheet-like material, and each has a three-dimensional shape described later. .

  Moreover, a flexible sheet | seat is a sheet-like raw material which has the flexibility for which it is difficult to maintain a flat shape by itself, for example in the state which is not supported appropriately. On the other hand, the sheet molded product can have a rigidity capable of maintaining the shape alone, regardless of the supported state, for example, in a state where an external force other than gravity due to its own weight is not acting.

  In the illustrated example, the main body 11 is a sheet molded product including a foamed resin layer. The lid 12 is a flexible sheet or a sheet molded product including a non-foamed resin layer. Here, an example is shown in which the main body portion 11 is composed of only one foamed resin layer and the lid portion 12 is composed of only one non-foamed resin layer. However, the main body portion 11 may have a non-foamed resin layer on the surface. preferable. In addition, the structure of the main-body part 11 and the cover part 12 is not limited to the example of illustration. For example, contrary to the illustrated example, the main body 11 includes a non-foamed resin layer, and the lid 12 includes a foamed resin layer. For example, the main body 11 includes only the non-foamed resin layer, and the lid 12 is foamed. It is possible to adopt not only a configuration composed of only the resin layer but also a configuration in which both the main body portion 11 and the lid portion 12 include a non-foamed resin layer, and a configuration in which both the main body portion 11 and the lid portion 12 include a foamed resin layer. Is possible.

  In addition, it is preferable that at least one of the main body part 11 and the cover part 12 has transparency that allows the internal cooling medium 20 to be visually recognized from the viewpoint of confirming the amount and phase state of the internal cooling medium 20. In the illustrated example, the lid 12 is made of a transparent or translucent non-foamed resin that allows the internal cooling medium 20 to be visually recognized. As described above, when the main body 11 is made of a non-foamed resin layer, it is preferable that the main body 11 also has transparency like the lid 12.

  When the main body part 11 or the cover part 12 includes a non-foamed resin layer, for example, a non-foamed polyethylene sheet, a polypropylene sheet, a polystyrene sheet, or a polyethylene terephthalate sheet as a resin sheet that is a material of the sheet molded product or the flexible sheet Etc. can be used. Moreover, when the main body part 11 or the cover part 12 includes a foamed resin layer, for example, a foamed polyethylene sheet, a foamed polypropylene sheet, a foamed polystyrene sheet, a foamed polyethylene terephthalate sheet, etc. are used as the resin sheet that is the material of the sheet molded product. Can be used.

When the main body part 11 or the cover part 12 includes a non-foamed resin layer (consisting only of a non-foamed resin layer), the density of the non-foamed resin layer is, for example, about 0.8 g / cm ³ or more and about 2.0 g / cm ^3. Hereinafter, the thickness can be, for example, about 0.1 mm or more and about 3.0 mm or less. The main body portion 11 or the lid 12 (made of only a foamed resin layer) comprising a foamed resin layer case, the density of the foamed resin layer, for example, from about 0.02 g / cm ³ or more and about 1.0 g / cm ³ or less The foaming ratio can be, for example, about 2 times or more and about 40 times or less, and the thickness can be, for example, about 0.5 mm or more and about 5.0 mm or less.

  With such a configuration, the thermal conductivity of the main body 11 and the thermal conductivity of the lid 12 can be made different. More specifically, when the main body 11 includes a foamed resin layer (consisting only of the foamed resin layer), the thermal conductivity of the foamed resin layer is, for example, about 0.02 W / m · K or more and about 0.05 W. / M · K or less, and when the lid 12 includes a non-foamed resin layer (consisting only of the non-foamed resin layer), the thermal conductivity of the non-foamed resin layer is, for example, about 0.1 W / m · K or more and It can be about 0.6 W / m · K or less.

  Moreover, although illustration is abbreviate | omitted, at least one of the main-body part 11 and the cover part 12 can have the laminated structure on which the several layer was laminated | stacked. Specifically, both or any one of the main body part 11 and the lid part 12 includes a plurality of foamed resin layers, a plurality of non-foamed resin layers, or one or more foamed resin layers and one or more non-foamed resin layers. Can have. In this case, in the above laminated structure, at least the resin layer exposed to the outside of the container 10 can be a non-foamed resin layer.

  In the illustrated example, the container 10 has a rectangular flat plate shape that seals a rectangular box-shaped main body portion 11 having an accommodating portion 14 that is open at the top and accommodates the cooling medium 20 inside, and an opening portion 11 c of the main body portion 11. The lid portion 12 is generally in the shape of a rectangular flat plate. In addition, the shape of the container 10 is not limited to a rectangular flat plate shape, and can be formed into various shapes such as a circular flat plate shape, a rectangular cylindrical shape, and a cylindrical shape.

  In the illustrated example, the end of the peripheral wall 11b that defines the opening 11c of the main body 11 at the end opposite to the end connected to the bottom wall 11a of the peripheral wall 11b of the main body 11 is: The edge 11d is bent substantially vertically toward the outside of the opening 11c, and a flat edge 11d is formed around the opening 11c. The peripheral edge portion 12a of the lid portion 12 is joined to the edge portion 11d. The inner part of the peripheral part 12a of the lid part 12 protrudes from the peripheral part 12a to the bottom wall part 11a side of the main body part 11 so as to fit inside the opening part 11c of the main body part 11. The edge portion 11d of the main body portion 11 and the peripheral edge portion 12a of the lid portion 12 can be joined over the entire circumference of the opening portion 11c by, for example, ultrasonic bonding or welding.

  As the cold medium 20 for cold storage accommodated in the container 10, for example, carboxymethyl cellulose (CMC), propylene glycol, thickener, food coloring, and preservatives are harmless to the human body in 90% by mass or more of water. A cryogen added with ingredients can be used. The freezing point or melting point of the cooling agent can be adjusted as appropriate by adjusting, for example, the rate of addition of the above components added to water and the rate of addition of sodium sulfate, potassium chloride, sodium chloride or the like as an inorganic salt.

  Moreover, as the heat-retention cooling medium 20, for example, a latent heat storage material can be used. As the main raw material of the latent heat storage material, for example, erythritol, sodium acetate trihydrate, sodium sulfate decahydrate can be used. By appropriately selecting these main raw materials, the melting point or freezing point (phase change temperature) of the cooling medium 20 can be adjusted to a temperature within the range of about 10 ° C. to 110 ° C., for example.

  Hereinafter, the effect | action of the cool storage heat material 1 of this embodiment is demonstrated.

  A conventional cold storage material using a blow-molded container needs to heat the resin material at the time of molding the container to make it flowable, extrude the resin material into a pipe shape, and blow it into it to inflate it. is there. Due to such molding restrictions, the thickness of the blow molded product container is about 10 mm at the minimum, making it difficult to reduce the thickness. In addition, the thinning here means not reducing the thickness of the wall constituting the container, but reducing the thickness of the container itself.

  On the other hand, in the regenerator material 1 of the present embodiment, as described above, the container 10 that encloses the cooling medium 20 includes the main body 11 that is a sheet molded product and the lid that is a flexible sheet or a sheet molded product. 12. Since the flexible sheet or the sheet molded product is obtained by cutting or molding a sheet-like resin material as described above, the container 10 thinner than the conventional one can be easily formed, and the regenerator heat material 1 is conventionally used. It can be made thinner. Further, the sheet molded product can be easily molded in a more complicated shape as compared with the conventional blow molded product.

  In addition, a conventional cold insulation material using a flexible plastic bag is more likely to be deformed than a cold storage material using a blow molded product container. Such a conventional cold insulation material deforms along the shape of the object supporting the cold insulation material before freezing of the liquid or gel enclosed in the plastic bag, and cannot maintain a specific shape alone. Therefore, a conventional cold insulation material using a flexible plastic bag is not easy to use because it is easily frozen by being deformed into an unintended shape and is easily expanded upon freezing.

  On the other hand, the regenerator material 1 of the present embodiment is a sheet molded product in which the main body portion 11 of the container 10 that stores the cooling medium 20 can maintain a certain shape, and is erected on the bottom wall portion 11a and its periphery. And a peripheral wall portion 11b. The peripheral wall portion 11b defines an opening portion 11c of the main body portion 11 at an end portion opposite to the bottom wall portion 11a. A cover 12 of a flexible sheet or a sheet molded product is joined to the end of the peripheral wall 11b that defines the opening 11c over the entire periphery of the opening 11c.

  That is, in the regenerator material 1 of the present embodiment, the peripheral wall portion 11b of the main body portion 11 constituting the container 10 is connected to one end and the other end in the direction intersecting the bottom wall portion 11a, that is, the thickness direction of the container 10. Reinforced by the bottom wall 11a and the lid 12, the strength is improved. Moreover, in the cool storage material 1 of this embodiment, the bottom wall part 11a and the cover part 12 of the main-body part 11 which comprise the container 10 are reinforced by the surrounding wall part 11b connected to these outer edge parts, and intensity | strength improves. .

  Therefore, according to the regenerator material 1 of the present embodiment, the container 11 has the main body 11 of the sheet molded product and the lid 12 of the flexible sheet or the sheet molded product, regardless of the phase state of the cooling medium 20. The strength capable of maintaining a fixed shape by 10 alone can be ensured. On the other hand, since the conventional cold insulation material using a flexible plastic bag does not have the main body part 11 and the lid part 12, unlike the cold storage heat material 1, the container 10 is independent depending on the phase state of the cooling medium 20. A certain shape cannot be maintained. That is, according to the cold storage material 1 of the present embodiment, deformation and expansion when the cooling medium 20 accommodated in the container 10 changes from a liquid phase to a solid phase can be suppressed.

  Moreover, in the container 10 of the cool storage heat material 1 of this embodiment, when the main body part 11 consists of a foamed resin layer and the cover part 12 consists of a non-foamed resin layer, the main body part 11 functions as a heat insulating material. Thereby, the temperature change of the cooling medium 20 accommodated in the container 10 by the main body part 11 having heat insulation properties can be suppressed, and the cooling effect or the warming effect can be maintained for a longer time. In addition, when the article that is likely to cause a low-temperature disorder, such as vegetables, fruits, and fresh foods, is kept in contact with the body portion 11 of the container 10 having heat insulation properties, the article contacts the body portion 11 and the temperature rapidly increases. It is possible to prevent the article from lowering to a low temperature and to prevent a low temperature failure of the article.

  Furthermore, the cooling medium 20 accommodated in the container 10 through the lid portion 12 made of a non-foamed resin layer having a higher thermal conductivity than that of the non-foamed resin when the cold storage heat material 1 is cooled or heated before use. By cooling or heating, the cooling medium 20 can be cooled or heated more efficiently.

  Conversely, in the container 10 of the regenerator material 1 of the present embodiment, when the main body 11 is made of a non-foamed resin layer and the lid 12 is made of a foamed resin layer, the lid 12 functions as a heat insulating material. Thereby, the temperature change of the cooling medium 20 accommodated in the container 10 can be suppressed by the lid portion 12 having heat insulation properties, and the cooling effect or the warming effect can be maintained for a longer time. Further, when the article that is likely to cause a low-temperature failure is kept cold, the cover 12 is opposed to the article to prevent the article from coming into contact with the cover 12 and the temperature rapidly decreasing, thereby preventing a low-temperature failure. it can.

  Furthermore, when the regenerator material 1 is cooled or heated before use, the cooling medium 20 inside the container 10 is cooled via the main body 11 made of a non-foamed resin layer having a higher thermal conductivity than the non-foamed resin. Alternatively, the cooling medium 20 can be cooled or heated more efficiently by heating. Moreover, since the surface area of the main-body part 11 of the container 10 becomes larger than the surface area of the cover part 12 normally, cooling or heating before use of the cool storage heat material 1 can be performed more efficiently.

  Moreover, in the container 10 of the cold storage heat material 1, when the main body part 11 and the cover part 12 are made of a non-foamed resin layer, the strength of the container 10 is improved as compared with the case where either one is made of a foamed resin layer. The durability of the container 10 can be improved. In addition, heat transfer between the cooling medium 20 and the outside of the container 10 can be efficiently performed through the main body 11 and the lid 12 made of the non-foamed resin layer having higher thermal conductivity than the foamed resin. Can do.

  That is, as described above, the thermal conductivity of the main body portion 11 and the thermal conductivity of the lid portion 12 are different, so that the cooling medium 20 can be precooled or preheated efficiently, and the regenerator material 1 can be It becomes possible to suppress a rapid temperature change.

  Further, when at least one of the main body 11 and the lid 12 has a laminated structure in which a plurality of resin layers are laminated, the strength is improved in at least one of the main body 11 and the lid 12 having the laminated structure. Or adjust the thermal conductivity. That is, the non-foamed resin layer has higher strength, such as piercing strength, than the foamed resin layer, but has a higher thermal conductivity than the foamed resin layer. Moreover, even if it is the same non-foamed resin layer or a foamed resin layer, a property changes by changing a material. Therefore, when at least one of the main body 11 and the lid 12 has a laminated structure, the container 10 having appropriate strength and appropriate thermal conductivity is configured by appropriately combining a plurality of resin layers having different properties. be able to.

  Further, as described above, when at least one of the main body portion 11 and the lid portion 12 has the above laminated structure, in the laminated structure, at least the resin layer exposed to the outside of the container 10 is a non-foamed resin layer. be able to. Thereby, the puncture intensity | strength of the container 10 of the cool storage heat material 1 can be improved. Further, for example, even when moisture is condensed on the outer surface of the container 10 during pre-cooling of the cold storage heat material 1 and the cold storage heat material 1 is fixed to another cold storage heat material 1 or a freezer through the condensed water, the cold storage is performed. The heat material 1 can be easily peeled off from the other regenerator heat material 1 or the freezer, and damage to the container 10 can be prevented.

[Embodiment 2]
Next, the regenerator material according to Embodiment 2 of the present invention will be described with reference to FIGS. 3 and 4. FIG. 3 is a plan view of the regenerator material 1A according to Embodiment 2 of the present invention. 4 is a cross-sectional view taken along line IV-IV of the regenerator material 1A shown in FIG.

  The regenerator material 1A of the present embodiment is different from the regenerator material 1 of the first embodiment described above in that the container 10 has a partition wall 13. Since the other points of the cold storage heat material 1A of the present embodiment are the same as those of the cold storage heat material 1 described in the first embodiment, the same portions are denoted by the same reference numerals and description thereof is omitted.

  Moreover, in FIG. 4, although the cover part 12 of the container 10 of the cool storage material 1A of this embodiment consists of a foamed resin layer, and the main-body part 11 shows the example of a non-foamed resin layer, the cool storage of this embodiment is shown. The heat material 1A is not limited to the illustrated example. That is, the regenerative heat material 1A of the present embodiment may have a configuration in which the main body portion 11 is made of a foamed resin layer and the lid portion 12 is made of a non-foamed resin layer, similarly to the regenerative heat material 1 of the first embodiment. Moreover, the structure which consists of a non-foaming resin or a foamed resin layer may be sufficient as both the main-body part 11 and the cover part 12. FIG.

  In the regenerator heat material 1 </ b> A of the present embodiment, the container 10 divides the housing portion 14 defined by the bottom wall portion 11 a, the peripheral wall portion 11 b, and the lid portion 12 into a plurality of sub housing portions 15. And a partition wall 13. In the illustrated example, the partition wall portion 13 is formed by, for example, forming a sheet-like material at the front end of the partition wall portion 13 by a mold when the body portion 11 that is a sheet molded product is formed. As a part, it is provided integrally with the main body 11. Thereby, the partition part 13 can have the thickness of about twice the thickness of a sheet-like raw material, for example. Although illustration is omitted, the partition wall portion 13 may have a groove-like hollow portion that opens to the bottom surface of the bottom wall portion 11a between the folded sheet-like materials.

  In the illustrated example, the plurality of sub-accommodating portions 15 of the container 10 are provided in a multiple ring shape defined by partition walls 13 that continue along the peripheral wall portion 11 b of the main body portion 11. More specifically, the plurality of sub-accommodating portions 15 of the container 10 are partitioned by a plurality of rectangular annular partition portions 13 that are continuous along the peripheral wall portion 11b of the rectangular annular main body portion 11, and a non-annular rectangular shape at the center portion. A plurality of rectangular annular sub-accommodating portions 15 are provided in a concentric annular manner around the sub-accommodating portion 15. In the illustrated example, a rectangular annular sub-accommodating portion 15 is provided in a triple concentric ring around the rectangular sub-accommodating portion 15 in the center, but the number and shape of the sub-accommodating portions 15 are changed as appropriate. It is possible.

  That is, in the illustrated example, the plurality of sub-accommodating portions 15 of the container 10 include at least one sub-accommodating portion 15 adjacent to one side of the peripheral wall portion 11b and at least one sub-accommodating portion spaced from the one side of the peripheral wall portion 11b. And an accommodating portion 15. More specifically, the container 10 has a rectangular flat plate shape, and is spaced apart from one annular sub-accommodating portion 15 adjacent to the four sides of the rectangular peripheral wall portion 11b in plan view and the four sides of the peripheral wall portion 11b. There are two annular sub-accommodating portions 15 and one rectangular sub-accommodating portion 15.

  In the regenerator material 1 </ b> A of the present embodiment, the cooling medium 20 accommodated in the container 10 can have a first cooling medium 21 and a second cooling medium 22 having different melting points or freezing points. The 1st cooling medium 21 and the 2nd cooling medium 22 are accommodated in the mutually different sub accommodating part 15, and mixing is prevented. For example, the first cooling medium 21 and the second cooling medium 22 can be alternately accommodated in a plurality of multiple annular sub-accommodating portions 15 arranged from the peripheral edge portion to the central portion of the container 10.

  The first cooling medium 21 and the second cooling medium 22 can be prepared such that the freezing point of the first cooling medium 21 is 10 ° C. or higher than the freezing point of the second cooling medium 22. That is, the freezing point or melting point of the first cooling medium 21 is preferably 10 ° C. or more higher than the freezing point or melting point of the second cooling medium 22, and more preferably 15 ° C. or more. More specifically, when the cold storage heat material 1A is used for cold storage, the freezing point or the melting point of the first cooling medium 21 is set to, for example, −5 ° C. or more and 5 ° C. or less, the freezing point of the second cooling medium 22 or The melting point can be set to, for example, −20 ° C. or more and −10 ° C. or less, respectively.

  Further, when the regenerator material 1A is used for temperature control at a lower temperature, the freezing point or melting point of the first cooling medium 21 is set to, for example, 20 ° C. or more and −10 ° C. or less, and the freezing point or melting point of the second cooling medium 22. May be set to, for example, −35 ° C. or more and −25 ° C. or less, respectively. On the other hand, in the case where the cold storage material 1A is used for cold storage of an article that may cause a low temperature failure, the freezing point or melting point of the first cooling medium 21 is set to, for example, 5 ° C. or more and 15 ° C. or less, and the second cooling medium The freezing point or melting point of 22 can be set to, for example, room temperature or lower.

  In the regenerator material 1A of the present embodiment, the first cooling medium 21 and the second cooling medium 22 are colored in mutually different colors, and at least one of the main body 11 and the lid 12 can distinguish different colors. It can have transparency. In the illustrated example, the main body part 11 made of a non-foamed resin layer among the main body part 11 and the lid part 12 of the container 10 can distinguish the color difference between the first cooling medium 21 and the second cooling medium 22. It is made of a translucent or transparent resin material. In this case, the lid 12 made of the foamed resin layer may be opaque.

  The colors of the first cooling medium 21 and the second cooling medium 22 are not particularly limited. For example, when the cold storage material 1A is used for cold storage, the first cooling medium 21 having a relatively high freezing point or melting point is used. The second cooling medium 22 that is colored in a cold color and has a relatively low freezing point or melting point can be colored in a warm color. More specifically, the first cooling medium 21 can be colored blue and the second cooling medium 22 can be colored yellow.

  The arrangement of the first cooling medium 21 and the second cooling medium 22 is not particularly limited. For example, the second cooling medium 22 is accommodated in the outermost sub-accommodating portion 15 adjacent to the peripheral wall portion 11b of the main body 11, and the first cooling medium 21 is accommodated in the sub-accommodating portion 15 inside thereof. The second cooling medium 22 and the first cooling medium 21 can be alternately stored in the inner sub-accommodating portion 15.

  Hereinafter, the effect | action of the cool storage heat material 1A of this embodiment is demonstrated.

  The cold storage heat material 1 </ b> A of the present embodiment includes the container 10 and the cold medium 20 enclosed in the container 10, similarly to the cold storage heat material 1 of the first embodiment described above. Moreover, the container 10 has the main-body part 11 which is a sheet molded product, and the cover part 12 which is a flexible sheet or a sheet molded product. Furthermore, the main body 11 has a bottom wall 11a, a peripheral wall 11b erected around the bottom wall 11a, and an opening 11c defined by the peripheral wall 11b, and the cooling medium 20 is accommodated therein. The opening portion 11 c is sealed by the lid portion 12. Therefore, according to the regenerator material 1A of the present embodiment, similarly to the regenerator material 1 of the above-described first embodiment, it becomes easy to form and thin a complicated shape than the conventional one, and deformation and expansion during freezing. Can be suppressed.

  Further, the container 10 of the regenerator heat material 1A of the present embodiment includes the storage portion 14 defined by the bottom wall portion 11a, the peripheral wall portion 11b, and the lid portion 12 as described above, and the storage portion 14 as a plurality of sub-accommodations. And a partition wall section 13 partitioned into a section 15. As a result, each sub-accommodating portion 15 is isolated by the partition wall portion 13, and different cooling media 20 can be accommodated in each sub-accommodating portion 15. Moreover, it is also possible to store the cooling medium 20 in a part of the plurality of sub-accommodating parts 15, accommodate air or other gas in the other part, and use the sub-accommodating part 15 that accommodates the gas as a heat insulating chamber. Become. Furthermore, the partition wall 13 functions as a reinforcing member that improves the strength of the container 10 by connecting the partition wall 13 to the bottom wall 11 a and the lid 12 of the main body 11.

  Further, in the container 10 of the regenerator material 1 </ b> A of the present embodiment, the plurality of sub-accommodating portions 15 are provided in a multiple ring shape defined by the partition wall portions 13 that are continuous along the peripheral wall portion 11 b of the main body portion 11. Thereby, it becomes possible to arrange the plurality of sub-accommodating portions 15 in the plate-like container 10 evenly with a good balance. In addition, a sufficient heat transfer area can be secured through the partition wall 13 between the sub-accommodating portions 15 adjacent to each other. Furthermore, the strength of the container 10 can be further improved by the peripheral wall portion 11b and the partition wall portion 13 of the main body portion 11 provided in a multiple ring shape or a multiple cylinder shape.

  In the container 10 of the regenerator material 1A of the present embodiment, the plurality of sub-accommodating portions 15 are separated from at least one sub-accommodating portion 15 adjacent to one side of the peripheral wall portion 11b and the one side of the peripheral wall portion 11b. At least one sub-accommodating portion 15. As described above, in the regenerative heat material 1A of the present embodiment, the container 10 having a complicated configuration, which is difficult to manufacture with the conventional blow molded product formed by blowing air from one side of the container, is a sheet molded product. It can be easily obtained by using a certain main body 11.

  In the regenerator material 1A of the present embodiment, the cooling medium 20 includes a first cooling medium 21 and a second cooling medium 22 having different melting points or freezing points, and the first cooling medium 21 and the second cooling medium 22 are the same. The cooling medium 22 is accommodated in different sub-accommodating portions 15. Thereby, compared with the case where the single cooling medium 20 is used, the cold storage or heat insulation performance of the regenerator material 1A is improved by using the latent heat of the first cooling medium 21 and the second cooling medium 22 mutually. Can be made. Further, at the start of use of the regenerator material 1 </ b> A, by using the solid phase first cooling medium 21 and the liquid phase second cooling medium 22, the sudden temperature of the article due to the latent heat of the first cooling medium 21. It is possible to perform temperature management suitable for the article, such as avoiding a change.

  In the regenerator heat material 1A of the present embodiment, the first cooling medium 21 and the second cooling medium 22 are colored in different colors, and at least one of the main body 11 and the lid 12 can distinguish the different colors. Transparency. In this case, it becomes possible to easily determine whether the cooling medium 20 accommodated in each sub-accommodating portion 15 of the container 10 is the first cooling medium 21 or the second cooling medium 22. It becomes easy to arrange the cold storage material 1A so that any one of the cooling mediums 20 more suitable for the temperature management of the article is adjacent to the article. Moreover, since at least one part of the container 10 has transparency, the quantity of the internal cold-heating medium 20 can be confirmed by visual observation, and management of the expiration date etc. of the cool storage heat material 1A becomes easy.

  Moreover, when the partition part 13 has a hollow part, the said hollow part functions as a heat insulation layer between the 1st cooling medium 21 and the 2nd cooling medium 22, and from the 2nd cooling medium 22 to the 1st The movement of heat to the cooling medium 21 can be suppressed, and the temperature rise of the first cooling medium 21 can be suppressed. Therefore, compared with the case where the partition part 13 does not have a hollow part, the duration of the regenerator material 1A can be increased.

  Further, when the partition wall 13 has a hollow portion, the partition wall 13 is hollow when the first cooling medium 21 or the second cooling medium 22 undergoes a phase change from the liquid phase to the solid phase and the volume expands. By deforming in the thickness direction so as to reduce the size of the part, volume expansion accompanying the phase change of the cooling medium 20 can be absorbed. Thereby, it can suppress that the container 10 deform | transforms in the thickness direction in alignment with the height direction of the surrounding wall part 11b by the volume expansion accompanying the phase change of the cooling medium 20. FIG.

[Embodiment 3]
Next, a regenerator material according to Embodiment 3 of the present invention will be described with reference to FIG. FIG. 5 is a plan view of a cold storage heat material 1B according to Embodiment 3 of the present invention. Note that FIG. 5 shows a state in which a part of the lid part 12 constituting the container 10 is broken and a part of the opening part 11c of the main body part 11 is exposed. In FIG. 5, the illustration of the cooling medium 20 is omitted.

  The regenerator material 1B of the present embodiment is different from the regenerator material 1A of the second embodiment described above in the configuration of the sub-accommodator 15 included in the container 14 of the container 10. Since the other points of the regenerative heat material 1B of this embodiment are the same as those of the regenerative heat material 1A described in the second embodiment, the same parts are denoted by the same reference numerals and the description thereof is omitted.

  In the regenerative heat storage material 1B of the present embodiment, the housing portion 14 of the container 10 includes a first sub housing portion 15A and a second sub housing portion 15B. Each of the first sub-accommodating portion 15A and the second sub-accommodating portion 15B includes a base portion 15a extending in the first direction and a plurality of protruding from the base portion 15a in the second direction intersecting the first direction. Projecting portions 15b, the base portions 15a facing each other in the second direction, and the projecting portions 15b arranged alternately in the first direction.

  More specifically, in the regenerator material 1B of the present embodiment, the container 10 has a generally rectangular planar shape. Each of the first sub-accommodating portion 15A and the second sub-accommodating portion 15B includes a base portion 15a extending in a direction parallel to the long side of the rectangular container 10 in plan view, and a plan view from the base portion 15a. And a plurality of projecting portions 15 b projecting in a direction parallel to the short side of the rectangular container 10.

  For example, the first cooling medium 21 is accommodated in the first sub-accommodating portion 15A, and for example, the second cooling medium 22 is accommodated in the second sub-accommodating portion 15B. Note that the ratio of the volume of the first sub-accommodating portion 15A to the volume of the second sub-accommodating portion 15B can be, for example, about 1: 1 to 2: 1. That is, the ratio of the volume of the first cooling medium 21 and the volume of the second cooling medium 22 can be set to, for example, about 1: 1 to 2: 1. Note that the ratio of the volume of the first sub-accommodating portion 15A to the volume of the second sub-accommodating portion 15B is, for example, increasing or decreasing the number of projecting portions 15b of one sub-accommodating portion 15, or the base portion 15a of each projecting portion 15b. It is possible to adjust appropriately by adjusting the protrusion length from the protrusion to the tip of the protrusion 15b.

  Further, the projecting portion 15b of the first sub-accommodating portion 15A and the projecting portion 15b of the second sub-accommodating portion 15B extend along the short side direction of the rectangular container 10 in plan view, and are rectangular in plan view. Alternatingly arranged along the 10 long sides. Furthermore, the tip of the protruding portion 15b of the first sub-accommodating portion 15A faces the base portion 15a of the second sub-accommodating portion 15B, and the tip of the protruding portion 15b of the second sub-accommodating portion 15B is the first sub-accommodating portion. It faces the base portion 15a of the portion 15A.

  In this manner, the first cooling medium 21 and the second cooling heat are arranged so that the comb-shaped first sub-accommodating portion 15A and the comb-shaped second sub-accommodating portion 15B are engaged with each other. A sufficient heat transfer area with the medium 22 can be secured. Thereby, the temperature of the 2nd cooling medium 22 can be stabilized more, and the temperature of the goods which need the temperature management adjacent to the 2nd cooling medium 22 can be stabilized more. In addition, the second cooling medium 22 can be arranged on the front and back of the regenerator material 1B, and the second cooling medium 22 having a larger specific heat and a more stable temperature than the solid-phase cooling agent needs to be temperature-controlled. It can be easily and reliably adjacent to an article.

  In the regenerator heat material 1B of the present embodiment, the shape and arrangement of the first sub-accommodating portion 15A and the second sub-accommodating portion 15B are not limited to the shape and arrangement shown in FIG. FIG. 6 shows a plan view of a modified example of the regenerator material 1B shown in FIG.

  In the regenerative heat storage material 1C of the modification shown in FIG. 6, the accommodating portion 14 of the container 10 has two first sub accommodating portions 15A and one second sub accommodating portion 15B. Each of the first sub-accommodating portion 15A and the second sub-accommodating portion 15B includes a base portion 15a extending in the first direction and a plurality of protruding from the base portion 15a in the second direction intersecting the first direction. Projecting portions 15b, the base portions 15a facing each other in the second direction, and the projecting portions 15b arranged alternately in the first direction. As in the example shown in FIG. 5, the first direction is a direction along the long side of the rectangular container 10 in plan view, and the second direction is the direction along the short side of the rectangular container 10 in plan view. It is.

  According to the cold storage material 1C of the modification shown in FIG. 6, the same effects as those of the cold storage material 1B of the present embodiment shown in FIG. 5 can be obtained. In addition, a first sub-accommodating portion 15A that accommodates the first cooling medium 21 is disposed along a pair of long sides of the rectangular container 10 that are opposed to each other in plan view, and the pair of opposed rectangular containers 10 that are opposed to each other in plan view. A second sub-accommodating portion 15B that accommodates the second cooling medium 22 can be disposed along the short side.

  Further, in the regenerative heat storage material 1C of the modification shown in FIG. 6, the plurality of sub-accommodating portions 15A and 15B include at least one sub-accommodating portion 15B adjacent to one side of the peripheral wall portion 11b of the main body portion 11 and the main body portion 11. And at least one sub-accommodating portion 15A spaced from the one side of the peripheral wall portion 11b. More specifically, the container 10 has a rectangular flat plate shape, and includes one second sub-accommodating portion 15B and two first sub-accommodating portions 15A.

  The one second sub-accommodating portion 15B is adjacent to two opposite sides of the rectangular peripheral wall portion 11b in plan view, and the two first sub-accommodating portions 15A are arranged in the rectangular peripheral wall portion 11b in plan view. It is not adjacent to the two opposite sides but is adjacent to one of the other two opposite sides and the other of the peripheral wall portion 11b with the second sub-accommodating portion 15B in between. The regenerative heat material 1C having such a configuration is difficult to manufacture with a conventional blow molded product in which air is blown from one side of the container 10 and molded, whereas the main body 11 that is a sheet molded product is used. The regenerator material 1C having the above-described configuration can be easily obtained.

[Embodiment 4]
Next, a regenerator material according to Embodiment 4 of the present invention will be described with reference to FIG. FIG. 7 is a plan view of a regenerator material 1D according to Embodiment 4 of the present invention. FIG. 7 shows a state in which a part of the lid part 12 constituting the container 10 is broken and a part of the opening part 11c of the main body part 11 is exposed. Moreover, illustration of the cooling medium 20 is abbreviate | omitted in FIG.

  The regenerator material 1D of the present embodiment is different from the regenerator material 1A of the second embodiment described above in the configuration of the sub-accommodator 15 included in the container 14 of the container 10. Since the other points of the regenerator material 1D of this embodiment are the same as those of the regenerator material 1A described in the second embodiment, the same parts are denoted by the same reference numerals and the description thereof is omitted.

  In the regenerator heat material 1D of the present embodiment, the storage unit 14 of the container 10 includes a first sub-accommodation unit 15A and a second sub-accommodation unit 15B, similar to the regenerator heat material 1A of the second embodiment described above. ing. However, the first sub-accommodating portion 15A has an annular portion 15c that continues along the peripheral wall portion 11b and a transverse portion 15d that crosses a region surrounded by the annular portion 15c. The annular portion 15c has a rectangular frame shape, and the transverse portion 15d has a belt-like shape that is generally parallel to the diagonal line of the rectangular container 10 in plan view. Further, the second sub-accommodating portion 15B is surrounded by the annular portion 15c and the transverse portion 15d of the first sub-accommodating portion 15A.

  In the illustrated example, the regenerator material 1D of the present embodiment has three second sub-accommodating portions 15B spaced apart from each other between the annular portion 15c and the transverse portion 15d of the first sub-accommodating portion 15A. ing. One second sub-accommodating portion 15B extends in a strip shape along one diagonal of the rectangular container 10 in plan view. The other two second sub-accommodating portions 15B are arranged on both sides in the width direction of the band-shaped second sub-accommodating portion 15B via the transverse portions 15d of the first sub-accommodating portion 15A. The two second sub-accommodating portions 15B have a substantially right-angled triangular shape in plan view, an oblique side generally parallel to a diagonal line of the rectangular container 10 in plan view, and a long side of the rectangular container 10 in plan view. And two sides that are generally parallel to the short side.

  According to the regenerator material 1D of the present embodiment, not only can the same effect as the regenerator material 1A of the second embodiment and the regenerator material 1B of the third embodiment described above, but also a rectangular container 10 in plan view. A first sub-accommodating portion 15A that accommodates the second cooling medium 22 can be disposed along each side. Therefore, the second cooling medium 22 can be disposed on the peripheral edge of the regenerator material 1D, and the temperature management of the second cooling medium 22 having a higher specific heat and a more stable temperature than the solid-phase cooling agent is possible. It can be easily and reliably adjacent to the required article.

  In the regenerator material 1D of the present embodiment, the plurality of sub-accommodating portions 15A and 15B of the container 10 include at least one sub-accommodating portion 15A adjacent to one side of the peripheral wall portion 11b and the one side of the peripheral wall portion 11b. And at least one sub-accommodating portion 15 </ b> B separated from the main body. More specifically, the container 10 has a rectangular flat plate shape, and when viewed in plan, the sub-accommodating portion 15A adjacent to the four sides of the rectangular peripheral wall portion 11b and three pieces separated from the four sides of the peripheral wall portion 11b. A sub-accommodating portion 15B. The regenerative heat storage material 1D having such a configuration is difficult to manufacture with a conventional blow-molded product that is molded by blowing air from one side of a container, but by using the main body 11 that is a sheet-molded product, The container 10 having such a complicated configuration can be easily obtained.

[Embodiment 5]
Next, a regenerator material according to Embodiment 5 of the present invention will be described with reference to FIGS. 8 and 9. FIG. 8 is a plan view of a regenerator material 1E according to Embodiment 5 of the present invention. FIG. 8 shows a state in which a part of the lid part 12 constituting the container 10 is broken and a part of the opening part 11c of the main body part 11 is exposed. FIG. 9 is a cross-sectional view taken along the line IX-IX when the regenerator material 1E shown in FIG. 8 is disposed on the food tray 40. In addition, illustration of the cooling medium 20 is abbreviate | omitted in FIG.

  The regenerator material 1E of the present embodiment is different from the regenerator material 1A of the second embodiment described above in the configuration of the sub-accommodator 15 included in the container 14 of the container 10. Since the other points of the regenerator material 1E of this embodiment are the same as those of the regenerator material 1A described in the second embodiment, the same parts are denoted by the same reference numerals and the description thereof is omitted.

  The regenerator material 1E of the present embodiment is thinned by the container 10 having a main body 11 that is a sheet molded product and a lid 12 that is a sheet molded product, and is made thinner than the thickness of the food tray 40, for example. For example, the thickness is reduced to less than half of the thickness of the food tray 40, more preferably less than 1/3. Moreover, the container 10 has the main body 11 that is a sheet molded product and the lid 12 that is a sheet molded product, so that the container 10 is molded into a complicated shape corresponding to the food tray 40.

  More specifically, the food tray 40 is, for example, a lunch box container, and has a plurality of compartments 41, 42, 43, and 44 for accommodating a plurality of types of food. In the illustrated example, the food tray 40 has a relatively wide rectangular section 41 for storing the cooked rice F1, and a relatively narrow rectangular section for storing the cooked food F2 that is less likely to lose its freshness, such as boiled food and grilled food. 42, a circular section 43 for storing raw vegetables, and an elongated rectangular section 44 for storing food F3, which is relatively easy to drop, such as sashimi.

  The regenerator material 1E of the present embodiment has a relatively wide rectangular sub-accommodating portion 15A corresponding to each section 41, 42, 43, 44 of the food tray 40 having such a complicated shape, It has a narrow rectangular sub-accommodating portion 15B, a circular sub-accommodating portion 15C, and an elongated rectangular sub-accommodating portion 15D. In the comparatively wide rectangular sub-accommodating portion 15A of the container 10 of the cold storage material 1E that is disposed opposite to the cooked rice section 41 of the food tray 40, for example, the cooked rice F1 can be kept warm as the cooling medium 20. A latent heat storage material and a cryogen having a freezing point or a melting point of 10 ° C. or higher and 15 ° C. or lower can be accommodated.

  Further, in the relatively narrow rectangular sub-accommodating portion 15B of the container 10 of the regenerator material 1E disposed opposite to the cooked food F2 section 42 of the food tray 40, as the cooling medium 20, for example, A gas such as air or other heat insulating material, or a cooling agent having a freezing point or a melting point of 5 ° C. or higher and 15 ° C. or lower can be accommodated. Further, in the circular sub-accommodating portion 15C of the container 10 of the regenerator material 1E disposed opposite to the raw vegetable compartment 43 of the food tray 40, the freezing medium 20 has, for example, a freezing point or a melting point of 5 ° C. The cold-retaining agent at 10 ° C. or lower can be accommodated.

  Furthermore, in the elongate rectangular sub-accommodating portion 15D of the container 10 of the regenerator material 1E disposed opposite to the section 44 that accommodates the food F3 that is relatively easy to drop in the food tray 40, the cooling medium 20 For example, a cryogen having a freezing point or a melting point of −5 ° C. or higher and 5 ° C. or lower can be accommodated. Furthermore, when the food tray 40 has a compartment for storing food that needs to be kept below freezing, such as ice cream, in the sub-accommodating portion of the container 10 of the regenerator material 1E arranged facing the compartment. Can contain, for example, a cooling agent having a freezing point or a melting point of −20 ° C. or higher and −10 ° C. or lower as the cooling medium 20.

  As described above, according to the regenerator material 1E of the present embodiment, the thin-wall regenerator material 1E that can be used as the lid of the food tray 40 can be provided. In addition, it is possible to provide the regenerator heat storage material 1E having a complicated shape corresponding to various foods requiring a complicated shape or heat insulation or cold preservation of the food tray 40. In addition, in the example shown in FIG. 9, the cover part 12 which comprises the container 10 of the cool storage heat material 1E is made from a foamed resin from a viewpoint of improving heat insulation, and the main-body part 11 of the container 10 is the food tray 40. It is made of non-foamed resin from the viewpoint of efficiently keeping the food contained in the container cold or warm.

  In the regenerator material 1E of the present embodiment, the plurality of sub-accommodating portions 15A, 15B, 15C, and 15D of the container 10 include at least one sub-accommodating portion 15D adjacent to one side of the peripheral wall portion 11b and the peripheral wall portion 11b. And at least one sub-accommodating portion 15B, 15C, 1D spaced from the one side. More specifically, the container 10 has a rectangular flat plate shape, and in the plan view, one sub-accommodating portion 15A adjacent to one side of the rectangular peripheral wall portion 11b, and three separate from the one side of the peripheral wall portion 11b. Two sub-accommodating portions 15B, 15C, and 15D. The regenerative heat material 1E having such a configuration is difficult to manufacture with a conventional blow-molded product formed by blowing air from one side of a container. However, by using the main body 11 that is a sheet molded product, it is possible to easily obtain the regenerator material 1E having the container 10 having a complicated configuration as described above.

[Embodiment 6]
Next, a regenerator material according to Embodiment 6 of the present invention will be described with reference to FIG. FIG. 10 is a cross-sectional view of the regenerator material 1F according to Embodiment 6 of the present invention.

  The regenerator material 1F of the present embodiment is different from the regenerator material 1A of the second embodiment described above in the configuration of the sub-accommodator 15 included in the container 14 of the container 10. Since the other points of the regenerator material 1F of this embodiment are the same as those of the regenerator material 1A described in the second embodiment, the same parts are denoted by the same reference numerals and the description thereof is omitted.

  In the regenerator material 1F of the present embodiment, the plurality of sub-accommodating portions 15A, 15B, and 15C of the container 10 are provided in a layered manner partitioned by partition portions 16 and 17 that continue along the bottom wall portion 11a of the main body portion 11. It has been. In the illustrated example, each partition wall portion 16 and 17 has a bottom wall portion 16a and 17a and peripheral wall portions 16b and 17b erected around the bottom wall portions 16a and 17a, like the main body portion 11. doing.

  The height of the peripheral wall portion 16 b of the first partition wall portion 16 is set lower than the height of the peripheral wall portion 11 b of the main body portion 11. The height of the peripheral wall portion 17 b of the second partition wall portion 17 is set lower than the height of the peripheral wall portion 16 b of the first partition wall portion 16. The edge 16d of the peripheral wall 16b that defines the opening 16c of the first partition wall 16 and the edge 17d of the peripheral wall 17b that defines the opening 17c of the second partition 17 are the peripheral wall of the main body 11. Like the edge portion 11d of 11b, it is bent toward the outside of the openings 16c and 17c.

  The first partition wall 16 is fitted inside the opening 11c of the main body 11, and the edge 16d of the peripheral wall 16b of the first partition 16 is connected to the edge 11d of the peripheral wall 11b of the main body 11, for example. Bonded by ultrasonic bonding or welding. Thereby, the first sub-accommodating portion 15 </ b> A is defined between the bottom wall portion 16 a of the first partition wall portion 16 and the bottom wall portion 11 a of the main body portion 11.

  Similarly, the second partition wall portion 17 is fitted inside the opening 16 c of the first partition wall portion 16, and the edge portion 17 d of the peripheral wall portion 17 b of the second partition wall portion 17 is the peripheral wall of the first partition wall portion 16. It joins to the edge part 16d of the part 16b, for example by ultrasonic bonding or welding. Thus, the second sub-accommodating portion 15B is defined between the bottom wall portion 16a of the first partition wall portion 16 and the bottom wall portion 17a of the second partition wall portion 17.

  Further, the peripheral edge portion 12a of the lid portion 12 of the container 10 is joined to the edge portion 17d of the peripheral wall portion 17b of the second partition wall portion 17 over the entire circumference of the opening portion 17c by, for example, ultrasonic bonding or welding. Thereby, the opening 17c of the second partition wall portion 17 is closed by the lid portion 12 of the container 10, and the third sub-accommodating portion 15C is defined between the lid portion 12 and the second partition wall portion 17. Yes.

  The cold storage heat material 1F of the present embodiment can store different cooling medium 20 or gas in each of the layered sub-accommodating portions 15A, 15B, 15C, and has the same effect as the cold storage heat material 1A of Embodiment 2 described above. Can be played. Further, according to the cold storage material 1F of the present embodiment, the sub-accommodating portions 15A and 15C that accommodate the common cooling / heating medium 20 on the entire surface or the entire back surface of the plate-shaped container 10 or the entire surface and the entire back surface of the container 10 are provided. Can be arranged.

  The embodiment of the present invention has been described in detail with reference to the drawings, but the specific configuration is not limited to this embodiment, and there are design changes and the like without departing from the gist of the present invention. They are also included in the present invention. For example, in each above-mentioned embodiment, the container 10 of a cool storage heat material may have a rib from a viewpoint of improving an intensity | strength.

  FIG. 11 is a plan view showing an example of the ribs 18 and 19 of the cool storage heat material container 10. FIG. 11 shows a state in which a part of the lid part 12 constituting the container 10 is broken and a part of the opening part 11c of the main body part 11 is exposed. In FIG. 11, the illustration of the cooling medium 20 is omitted. In the illustrated example, the main body 11 of the container 10 includes a cross rib 18 along the vertical and horizontal center lines of the rectangular bottom wall 11a in plan view, and a lid from the bottom wall 11a in the height direction of the peripheral wall 11b. And a plurality of ribs 19 extending up to twelve.

  The rib 18 of the bottom wall portion 11 a is provided by bending a part of the bottom wall portion 11 a toward the lid portion 12 and partially projecting toward the lid portion 12. The rib 19 of the peripheral wall portion 11 b is provided by bending a part of the peripheral wall portion 11 b toward the inside of the housing portion 14 and projecting toward the inside of the housing portion 14. In addition, the bottom wall part 11a and the peripheral wall part 11b have a substantially uniform wall thickness in a part where the ribs 18 and 19 are provided and a part where the ribs 18 and 19 are not provided. By forming such ribs 18 and 19 in the cold storage material 10, the strength of the cold storage material can be improved and deformation can be prevented.

DESCRIPTION OF SYMBOLS 1 Cold storage heat material 1A Cold storage heat material 1B Cold storage heat material 1C Cold storage heat material 1D Cold storage heat material 1E Cold storage heat material 1F Cold storage heat material 10 Container 11 Main body part 11a Bottom wall part 11b Peripheral wall part 11c Opening part 12 Cover part 13 Partition part 14 Accommodating portion 15 Sub-accommodating portion 15A First sub-accommodating portion 15B Second sub-accommodating portion 15a Base portion 15b Protruding portion 15c Annular portion 15d Crossing portion 20 Cooling medium 21 First cooling medium 22 Second cooling medium

Claims (14)

A regenerative heat storage material comprising a container and a cooling medium enclosed in the container,
The container has a main body part which is a sheet molded product and a lid part which is a flexible sheet or a sheet molded product,
The main body portion includes a bottom wall portion, a peripheral wall portion standing around the bottom wall portion, and an opening defined by the peripheral wall portion, the cooling medium is accommodated, and the opening portion is the lid A regenerative heat material characterized by being sealed by a part. The main body includes a foamed resin layer,
The regenerator material according to claim 1, wherein the lid includes a non-foamed resin layer. The main body includes a non-foamed resin layer,
The regenerator material according to claim 1, wherein the lid includes a foamed resin layer.   The container includes an accommodating portion defined by the bottom wall portion, the peripheral wall portion, and the lid portion, and a partition wall that partitions the accommodating portion into a plurality of sub-accommodating portions. The regenerative thermal material according to any one of claims 3 to 4.   The plurality of sub-accommodating portions include at least one sub-accommodating portion adjacent to one side of the peripheral wall portion, and at least one sub-accommodating portion spaced from the one side of the peripheral wall portion. The regenerator material according to claim 4.   The regenerative heat storage material according to claim 5, wherein the plurality of sub-accommodating portions are provided in a multiple ring shape defined by the partition wall portions continuous along the peripheral wall portion.   The regenerative heat storage material according to claim 4, wherein the plurality of sub-accommodating portions are provided in a layered manner partitioned by the partition wall portions continuous along the bottom wall portion. The housing portion has a first sub housing portion and a second sub housing portion,
Each of the first sub-accommodating portion and the second sub-accommodating portion includes a base portion extending in a first direction and a plurality of protrusions projecting from the base portion in a second direction intersecting the first direction. 6. The method according to claim 4, further comprising: projecting portions, wherein the base portions of each other face each other in the second direction, and the projecting portions of each other are alternately arranged in the first direction. The regenerator material described in 1. The housing portion has a first sub housing portion and a second sub housing portion,
The first sub-accommodating portion has an annular portion that continues along the peripheral wall portion and a transverse portion that crosses a region surrounded by the annular portion,
The regenerative heat material according to claim 5, wherein the second sub-accommodating portion is surrounded by the annular portion and the transverse portion. The cooling medium has a first cooling medium and a second cooling medium having different melting points or freezing points,
10. The regenerative heat storage material according to claim 4, wherein the first cooling medium and the second cooling medium are accommodated in the sub-accommodating portions that are different from each other. The first cooling medium and the second cooling medium are colored in different colors,
The cold storage heat material according to claim 10, wherein at least one of the main body portion and the lid portion has transparency capable of distinguishing the different colors.   The thermal storage material according to any one of claims 1 to 11, wherein the thermal conductivity of the main body and the thermal conductivity of the lid are different.   The regenerative heat material according to any one of claims 1 to 12, wherein at least one of the main body portion and the lid portion has a laminated structure in which a plurality of resin layers are laminated.   In the said laminated structure, the resin layer exposed to the exterior of the said container is a non-foamed resin layer, The cool storage heat material of Claim 13 characterized by the above-mentioned.

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