JP6349776B2 - Cold insulation box - Google Patents

Description

  The present invention relates to a cold and heat insulating box capable of maintaining a constant internal temperature well.

  In recent years, global warming has become a serious problem. Accordingly, energy saving is being promoted in articles in various fields such as industrial machinery, vehicles such as automobiles, consumer equipment such as home appliances, buildings such as houses, and logistics.

  In any field, the energy used for maintaining the temperature inside the cold insulation box is a large proportion of the total energy consumed. Therefore, improvement of the constant temperature maintenance performance of the heat insulating material constituting the cold insulation box is regarded as important from the viewpoint of energy consumption and cost reduction.

  In particular, in the field of vehicles such as automobiles that involve movement, and in the field of physical distribution, it is required to reduce the weight and space of the heat insulating material as well as to maintain the constant temperature. In such an application, a heat insulating material using a foam is known.

  Patent Document 1 describes a structure in which a vacuum heat insulating material is provided inside each surface of a cold storage container, and the vacuum heat insulating material on the bottom and the side walls on the short side is divided and provided so as to be foldable.

  Moreover, in patent document 2, the long side half surface, the long side wall, and the long side lid part of the bottom part which a container opposes have a vacuum heat insulating material, and each vacuum heat insulating material can be assembled and bent. In this way, those connected via a flexible part are described.

  Further, Patent Document 3 discloses a frozen container in which a frozen product is formed using a vacuum heat insulating material, and the frozen container is loaded and delivered in a cold storage vehicle other than the freezing vehicle or a room temperature storage. The delivery method is described.

JP 2005-239166 A JP 2005-239285 A JP 2005-247581 A

  By the way, the thing of patent document 1 and patent document 2 is a container containing both a vacuum heat insulating material, Comprising: A fixed heat insulation performance is realizable.

  However, in patent document 1, sufficient heat insulation about the clearance gap between vacuum heat insulating materials is not considered, and external heat | fever may flow in from a ridgeline part.

  Moreover, in patent document 2, the heat insulation is not considered about the clearance gap between the vacuum heat insulating materials of a cover part and a bottom part, and durability and bending resistance when a flexible vacuum heat insulating material is repeatedly bent. There is also no description about durability, and there is no description about durability. If a crack occurs in the flexible part, the degree of vacuum of all the connected vacuum heat insulating materials is impaired, so that a problem remains in terms of practicality.

  Furthermore, although the thing of patent document 3 is a delivery method which loads the container containing a vacuum heat insulating material on a container to a normal temperature vehicle etc., since there is no description about the heat insulation of the crevice between a ridgeline or vacuum heat insulating materials, it is high. There is a problem that it is still insufficient to maintain the cold insulation. If a cold storage container containing only a foam that does not use a vacuum heat insulating material is used in a shipping box or the like, the capacity required for transportation increases and the accommodation capacity decreases. In this case, in order to secure the storage capacity, it is only possible to manufacture a larger box, resulting in an increase in weight, resulting in an increase in energy required for total transportation and an increase in transportation cost.

  In this case, if the heat insulating layer made of a foam is thinned, the volume required for transportation is reduced, but a sufficient heat insulating effect cannot be obtained, and the content cannot be kept warm enough to deteriorate the quality of the content.

  The reason for this is that heat and cold are transferred from the laminated surface to the foam over time due to heat conduction of the foam itself, and the heat capacity of the foam is large, so that heat and cold are confined in the foam. This is because a situation occurs. That is, cold storage or heat storage occurs in the foam. Cold air and heat stored in or stored in the foam will eventually diffuse through the heat insulating material, and finally cool air and heat will be released from the foam (cooling or heat dissipation) to escape. As a result, the cold insulation / maintenance duration time for maintaining the predetermined temperature is shortened accordingly.

  The present invention has been made in consideration of such points, and an object of the present invention is to provide a cold and warm box that can maintain the internal temperature well.

The present invention includes four side panels, a bottom panel fixed to each side panel, and a top panel swingably attached to an upper end of one side panel. The top panel is swingable by a swinging part provided between the panels, and each side panel, bottom panel, and top panel have heat insulating panels including vacuum heat insulating materials and are adjacent to each other. In the side panel, the end surface of one side panel is abutted and joined to the inner surface of the other side panel, and each side panel is abutted and joined to the inner surface of the bottom panel at the end surface. including the swing section, the region extending to the side panel side outer surface from the top panel side outer surface, a cold heat insulating box body, characterized in that over the swinging portion outer surface flexible heat insulating material is provided.

  In the present invention, the three side panels other than the swinging part and the top panel are fitted by the peripheral fitting part, and the peripheral fitting part is the top panel side fitting part on the top panel side, and the top panel It is a cold and heat insulating box having a side panel side fitting part on the side panel side to be fitted to the side fitting part.

The present invention includes three side panels other than the swing section, the boundary between the top panel, cold heat insulating box body, characterized in that over its outer surface a flexible heat insulating material is provided It is.

The present invention is flexible insulation and top panel side friendly FLEXIBLE insulation top panel side, and the side panel side friendly FLEXIBLE insulation side panel side overlapping the top panel side friendly FLEXIBLE insulation material It is a cold and heat insulation box body characterized by having.

  The present invention is a cold and heat insulating box characterized in that the top panel has a top panel main body made of a heat insulating panel.

  The present invention is a cold and heat insulating box characterized in that the top panel has a top panel main body composed of a single heat insulating panel and a heat insulating peripheral protrusion provided on the periphery of the top panel main body. is there.

  The present invention includes a heat-insulating panel with an exterior material, each of the side panels, the bottom panel, and the top panel having a heat-insulating panel including a vacuum heat-insulating material and a heat-insulating exterior material covering the heat-insulating panel. This is a cool and warm box.

The present invention is the junction between the junction and the side panels and the bottom panel between adjacent side panels, a cold heat insulating box body, characterized in that it is protected by a flexible insulation.

  According to the present invention, the internal temperature can be maintained satisfactorily. Therefore, it has the effect of reducing the volume required for transportation and reducing the energy and cost required for transportation.

FIG. 1A is a perspective view showing an embodiment of a cold insulation box according to the present invention, FIG. 1B is a cross-sectional view of a portion B of FIG. 1A, and FIG. 1C is FIG. FIG. FIG. 2 is a perspective view showing a state in which the cold insulation box is opened. FIG. 3 is a bottom view showing the cold insulation box. FIG. 4A is a view showing a heat insulating panel, and FIG. 4B is a view showing a heat insulating panel with an exterior material having a heat insulating panel and an exterior material. FIG. 5 is a view showing a state in which a heat insulating panel with an exterior material is joined. 6A and 6B are views showing a vacuum heat insulating material. FIG. 7 is a view showing a modified example of the cold insulation box.

<Embodiment>
Hereinafter, a cold and warm box according to the present invention will be described with reference to the drawings.
Here, FIG. 1 to FIG. 6 are diagrams showing an embodiment of the cold and warm box 10.

  First, FIG. 1 thru | or FIG. As shown in FIGS. 1 to 3, the foldable cold-insulated box body 10 includes a top panel 11, four side panels 12, 13, 14, 15, and a bottom panel 16, and keeps the inside cold or insulated. The goods to be stored are stored. After the article is stored in the cold insulation box 10 having such a configuration, the cold insulation box 10 is stored in a container (not shown) together with the article and transported by an automobile or an aircraft.

  The top panel 11, the side panels 12, 13, 14, and 15, and the bottom panel 16 all have a heat insulating panel 20 including a vacuum heat insulating material 21 and a heat insulating covering the heat insulating panel 20 as described later. And a heat-insulating panel 25 </ b> A with an exterior material having a conductive exterior material 25.

Among the exterior material 25 is made of a material having a FLEXIBLE and thermal insulation variable.

  The top surface 11, the side panels 12, 13, 14, 15 and the bottom panel 16 are composed of the heat insulating panel 20A with the exterior material as described above, but the heat insulating panel 20 without the exterior material. You may comprise only.

  Further, of the cold insulation box 10, adjacent side panels 12, 13, 14, 15, for example, the side panels 12, 13 are such that the end surface of one side panel 12 abuts the inner surface of the other side panel 13. 40 (see FIG. 1B).

  The side panels 12, 13, 14, and 15 are in contact with and joined to the inner surface of the bottom panel 16 at their end surfaces.

The junction between each side panel 12, 13, 14, 15, its outer surface is covered by a flexible heat insulating material 34 of the outer surface, the inner surface is covered by the inner surface side friendly FLEXIBLE heat insulating material 35 ( (Refer FIG.1 (b)).

Similarly, the junction between each side panel 12, 13, 14, 15 and the bottom panel 16 has its outer surface covered with heat insulating material 34 Deflection outer surface Friendly, its inner surface is the inner surface side friendly FLEXIBLE insulation material 35.

  Furthermore, as shown in FIG. 2, the top panel 11 is swingably attached to the upper end of one side panel 12 via a swing part 17.

  In this case, the top panel 11 has a top panel body 11a composed of a single heat-insulating panel 20A with an exterior material, and a heat-insulating protrusion 11b provided on the periphery of the top panel body 11a. However, the structure of the top panel 11 is not limited to this, and the top panel 11 may be composed only of the top panel body 11a including the heat-insulating panel 20A with an exterior material.

Further, the oscillating portion 17 between the top panel 11 and side panel 12, a flexible heat insulation material 30 is provided to cover the swinging portion 17 outer surface.

  Furthermore, the side panels 13, 14, 15 other than the side panel 12 corresponding to the swing part 17 and the top panel 11 a are fitted via a peripheral edge fitting part 32.

  The peripheral fitting part 32 includes a top panel side fitting part 32a on the top panel 11 side and a side panel side fitting part 32b on the side panels 13, 14, 15 side.

  The top panel side fitting part 32a and the side panel side fitting part 32b are both made of a urethane foam material.

More also top outer surface of the panel-side fitting portion 32a and the side panel engaging portions 32b, top panel side friendly FLEXIBLE heat insulating material 31a and a side panel-side friendly FLEXIBLE heat insulating material 31b are provided respectively .

When the top panel 11 swings with respect to the side panel 12 and the top panel 11 is closed, the top panel side fitting portion 32a and the side panel side fitting portion 32b are fitted to each other. . At the same time top panel side friendly FLEXIBLE heat insulating material 31a comes to the outside of the side panel side friendly FLEXIBLE heat insulating material 31b, top panel side friendly FLEXIBLE heat insulating material 31a and the side panel side friendly FLEXIBLE heat insulating material 31b are mutually overlap.

Thus, covered with FLEXIBLE heat insulating material 30 a variable oscillating portion 17 outer surface between the top panel 11 and side panel 12, the boundary outer surface between the top panel 11 and side panels 13, 14 and 15 by covering with top panel side friendly FLEXIBLE heat insulating material 31a and the side panel side friendly FLEXIBLE heat insulating material 31b, improved thermal insulation of the boundary between the top panel 11 and side panels 12, 13, 14, 15 Can be made.

In this case, by the top panel-side friendly FLEXIBLE heat insulating material 31a and top panel side friendly FLEXIBLE heat insulating material 31b, a flexible heat insulating material 31 is formed.

  Next, the heat insulating panel 20, and the heat insulating panel 20 </ b> A with the exterior material composed of the heat insulating panel 20 and the exterior material 25 will be described.

  First, as shown in FIGS. 4A and 4B, the heat insulating panel 20 includes at least a vacuum heat insulating material 21 and a pair of protective materials 23 and 23 that sandwich the vacuum heat insulating material 21 from both sides.

  Among them, the vacuum heat insulating material 21 includes a core material 21a made of any one of a fiber material, a resin foam material, and a granular material, and an outer cover material 21b that covers the core material 21a and has a gas barrier property. It is a heat insulating material obtained by depressurizing the inside of the jacket material 21b and bringing it into a vacuum state. In this case, a space is formed at both ends of the core material 21a in the jacket material 21b (see FIG. 6A), but a space is not formed at both ends of the core material 21a in the jacket material 21b. The jacket material 21b may be brought into close contact (see FIG. 6B).

  The pair of protective materials 23 increases the rigidity of the vacuum heat insulating material 21.

Such construction insulation panels 20 made of are covered by the outer package 25 having FLEXIBLE and thermal insulation soluble, heat-insulating panels 20A with outer package by the exterior material 25 which covers the heat insulation panel 20 and the heat insulating panels 20 (See FIG. 4B).

  Further, a plurality of heat insulating panels with exterior material 20A are adjacent to each other, and the end surface of one heat insulating panel with exterior material 20A is brought into contact with the inner surface of the other heat insulating panel with exterior material 20A and bonded using an adhesive 40. (See FIG. 5).

  In this way, the side panels 12, 13, 14, 15 and the bottom panel 16 joined together by the adhesive 40 can be configured.

Note that two of the outer package with heat-insulating panels 20A, which are joined together, the joint 20A, the outer surface side friendly FLEXIBLE heat insulating material 34 on its outer surface is attached by an adhesive 40, the inner surface side friendly FLEXIBLE on its inner surface heat insulating material 35 is attached by an adhesive 40, thermal insulation of the joint is maintained by these friendly FLEXIBLE heat insulating material 34.

  Next, constituent materials of each part will be described.

(Insulating panel 20)
First, the material of the heat insulating panel 20 will be described. As described above, the heat insulating panel 20 includes the vacuum heat insulating material 21 and the pair of protective materials 23, and the vacuum heat insulating material 21 includes the core material 21 a and the gas barrier outer covering material 21 b covering the core material 21 a. It consists of.

The protective material 23 is as follows.
That is, the vacuum heat insulating material 21 is liable to be cracked, wrinkled, or penetrated due to external damage, etc., and when used alone, it is easily damaged especially in the physical distribution process. There is a fear. Therefore, in this embodiment, the vacuum heat insulating material 21 is protected by covering the front and back with the protective material 23 so that the vacuum heat insulating material 21 can be used repeatedly.

  The protective material 23 is not particularly limited as long as it has rigidity with a protective function. For example, a plywood, a steel plate, a foamed material, a rigid resin plate, an embossed resin sheet, a paperboard or the like may be used. Since the transportation cost can be reduced by reducing the volume and the volume, it is particularly preferable in terms of cost and weight to provide a so-called curing material, prada (plastic cardboard), or a composite material thereof at least on the inner surface side.

As Pradan, for example,
`` Dampla Ace '' made by Toyo Unicorn,
"Pura Pearl" manufactured by Kawakami Sangyo Co., Ltd.
As a curing material, for example,
“P Board” manufactured by MF Corporation,
As a composite material of Pradan and foam material, for example,
Examples include “Sunply F” manufactured by MF Corporation.

The thermal conductivity of the material forming the heat insulating panel 20 is not particularly limited as long as the desired heat insulating property can be exhibited. For example, it is 100 mW · m ⁻¹ · K ⁻¹ or less, particularly 50 mW · m ⁻¹ · It is preferably K ⁻¹ or less, particularly 35 mW · m ⁻¹ · K ⁻¹ or less.

  This is because if the thermal conductivity of the heat insulating panel 20 is large, it is difficult to exhibit a sufficient heat insulating function.

In addition, the specific heat of the material constituting the heat insulating panel 20 is not particularly limited as long as the desired heat insulating property can be exhibited. For example, 0.5 kJ · g ⁻¹ · K ^{−1 to} 2.0 kJ · g ^−1. · ^K is about ^-1, inter alia ^{0.8kJ · g -1 · K -1 ~1.5kJ} · g -1 · K in the range of ^-1, particularly 1.0 kJ ^{· g} -1 · ^{K -1} ~ It is preferable to be within the range of 1.4 kJ · g ⁻¹ · K ⁻¹ .

  The thickness of the heat insulating panel 20 is not particularly limited as long as it has a desired heat insulating property and can be appropriately selected according to various uses. Preferably, for example, it is preferably in the range of 0.1 mm to 100 mm, in particular in the range of 1 mm to 80 mm, particularly in the range of 3 mm to 30 mm.

  When the thickness of the heat insulation panel 20 is too thick, the heat insulation panel 20 becomes heavy, the whole cold insulation heat box 10 may become heavy, and handling of the cold insulation box 10 may become difficult. On the other hand, if the heat insulating panel 20 is too thin, it may be difficult to exhibit sufficient heat insulating properties, or the vacuum heat insulating material 21 of the heat insulating panel 20 may be easily damaged. Moreover, in this embodiment, it is more preferable that the thickness of the heat insulation panel 20 is thin within the numerical range mentioned above.

  In the cold insulation box 10 according to the present embodiment, if the thickness of the protective material 23 is reduced, not only can the weight be reduced, but also the heat insulation function of the vacuum insulation material 21 can be exhibited, and the weight of the cold insulation box 10 can be increased. And the size can be suppressed. Moreover, the thickness as the heat insulation panel 20 whole can be made thin, and weight reduction and compactization can be shown. In this case, it is possible to reduce the distribution cost and to improve the workability by making the cold and warm box 10 according to the present embodiment lightweight.

(Exterior material 25)
Next, the material of the exterior material 25 will be described.
The packaging material 25 can be made of a flexible flexible material having heat insulation properties and formed into a bag with PET, aluminum foil, polyethylene foam, or the like, or PET, aluminum foil, pef, or the like. In this case, by using a soft bag as the exterior material 25, it is possible to prevent scratches and the like of the heat insulating panel 20 stored, and to extend the product life.

  In addition, as the exterior material 25, the material similar to the flexible heat insulating materials 30, 31, 34, and 35 mentioned later can also be used.

(Flexible thermal insulation 30, 31, 34, 35)
Next, the material of the flexible heat insulating materials 30, 31, 34, and 35 will be described.
As the flexible heat insulating materials 30, 31, 34, and 35, a material selected from electron beam cross-linked polyolefin foam, polyethylene foam, and elastomer having closed cells can be used. In particular, the following materials can be used as the flexible heat insulating materials 30, 31, 34, and 35.
“Pef” (cross-linked olefin resin) manufactured by Toray Pef Processing Co., Ltd., thermal conductivity 30 mm and thermal conductivity 35 mW / mK at 6 mm thickness / foaming ratio,
“Softlon S” (polyethylene foam) manufactured by Sekisui Chemical Co., Ltd., with a thickness of 3 mm and a thermal conductivity of 34.5 mW / mK,
“Aeroflex” (elastomer with closed cells) manufactured by Nissho Aero Co., Ltd., with a thickness of 3 mm and a thermal conductivity of 38 mW / mK,
Etc. are used.

(adhesive)
Or joining the exterior material with heat insulation panels 25A together, adhesive 40 for bonding the flexible heat insulating material 30,31,34,35 exterior material with heat insulating panels 25A are used.

  As such an adhesive 40, a publicly known thing can be used, for example, thermoplastic resins, such as polyamide resin, acrylic resin, vinyl acetate resin, polycarbonate resin, polyester resin, vinyl chloride resin, urethane resin, etc. And thermosetting resin. Moreover, the copolymer which has these resins as a main component can also be used. In addition, these adhesive agents can be used individually by 1 type or in mixture of 2 or more types. In addition, a two-component curable polyurethane resin, a polyester resin, or an epoxy resin that uses isocyanate, polyisocyanate, epoxy acrylate, or the like as a curing agent can also be applied.

  As described above, according to the present embodiment, adjacent side panels 12, 13, 14, 15 such as the side panels 12, 13 of the cold insulation box 10 have the end surface of one side panel 12 on the other side. The side panel 13 is in contact with the inner surface of the side panel 13 and bonded using an adhesive 40. The side panels 12, 13, 14, and 15 are in contact with and joined to the inner surface of the bottom panel 16 at their end surfaces.

The junction between each side panel 12, 13, 14, 15, its outer surface is covered by a flexible heat insulating material 34 of the outer surface, the inner surface is covered by the inner surface side friendly FLEXIBLE heat insulating material 35. Similarly, the junction between each side panel 12, 13, 14, 15 and the bottom panel 16 has its outer surface covered with heat insulating material 34 Deflection outer surface Friendly, its inner surface is the inner surface side friendly FLEXIBLE insulation material 35.

Further, the oscillating portion 17 between the top panel 11 and side panel 12, a flexible heat insulation material 30 is provided to cover the swinging portion 17 outer surface, and also corresponds to the swing portion 17 Side panels 13, 14, 15 other than the side panel 12 and the top panel main body 11 a are fitted via a peripheral edge fitting portion 32.

For this reason, when the top panel 11 swings with respect to the side panel 12 and the top panel 11 is closed, the top panel side fitting part 32a and the side panel side fitting part 32b are fitted to each other. Match. At the same time top panel side friendly FLEXIBLE heat insulating material 31a comes to the outside of the side panel side friendly FLEXIBLE heat insulating material 31b, top panel side friendly FLEXIBLE heat insulating material 31a and the side panel side friendly FLEXIBLE heat insulating material 31b are mutually overlap. Thus, covered with FLEXIBLE heat insulating material 30 a swinging portion 17 allowed between the top panel 11 and side panel 12, the boundary outer surface between the top panel 11 and side panels 13, 14 and 15 top by covering a plane panel side friendly FLEXIBLE heat insulating material 31a and the side panel side friendly FLEXIBLE heat insulating material 31b, to further improve the thermal insulation properties of the boundary between the top panel 11 and side panels 12, 13, 14, 15 be able to.

  From the above, it is possible to provide a cold and warm box having excellent heat insulation.

<Modification>
Next, a modification of the present invention will be described with reference to FIG.
In the modification shown in FIG. 7, the same parts as those in the embodiment shown in FIGS.

  As shown in FIG. 7, a pocket-shaped storage portion 45 that stores the lid heat material or the lid cooling material 42 is provided on the inner surface of the top panel 11. Such a pocket-shaped storage part 41 does not necessarily have to be provided on the inner surface of the top panel 11, but a pocket-shaped storage part on the inner surface of any one of the side panels 12, 13, 14, 15 or the inner surface of the bottom panel 16. 41 may be provided.

10 Insulation box 11 Top panel 12, 13, 14, 15 Side panel 16 Bottom panel 20 Thermal insulation panel 20A Thermal insulation panel with exterior material 21 Vacuum thermal insulation material 23 Protective material 25 Exterior material 30, 31, 34, 35 Possible Flexible heat insulating material 32a Top panel side fitting part 32b Side panel side fitting part

Claims (8)

Four side panels,
A bottom panel fixed to each side panel;
A top panel that is swingably attached to the upper end of one side panel, and the top panel is swingable by a swinging portion provided between the one side panel and the top panel. Yes,
Each side panel, bottom panel, and top panel have heat insulating panels including vacuum heat insulating materials, and adjacent side panels are joined with the end surface of one side panel abutting against the inner surface of the other side panel. ,
Each side panel is in contact with and joined to the inner surface of the bottom panel at its end face,
Including swinging portion of the top panel and side panels, in the region leading to the side panel side outer surface from the top panel side outer surface, characterized in that over the swinging portion outer surface flexible heat insulating material is provided Cold insulated box.   The three side panels other than the swing part and the top panel are fitted by the peripheral fitting part, and the peripheral fitting part is the top panel side fitting part and the top panel side fitting part on the top panel side. The cold-insulated box body according to claim 1, further comprising a side panel side fitting portion on a side panel side that fits into the side wall. And three side panels other than the swing section, the boundary between the top panel, cold according to claim 1 or 2, characterized in that over its outer surface a flexible heat insulating material is provided Thermal insulation box. Flexible insulation and top panel side friendly FLEXIBLE insulation top panel side, to have a side panel-side friendly FLEXIBLE insulation side panel side overlapping the top panel side friendly FLEXIBLE insulation material The cold and heat insulating box according to claim 3.   The top and bottom panel has a top panel main body made of a heat insulating panel, and the cold and heat insulating box according to any one of claims 1 to 4.   The top panel includes a top panel main body made of a single heat insulating panel and a heat insulating peripheral protrusion provided on the periphery of the top panel main body. Cold insulation box body.   Each side panel, bottom panel, and top panel are composed of a heat-insulating panel with an exterior material having a heat-insulating panel including a vacuum heat-insulating material and a heat-insulating exterior material covering the heat-insulating panel. The cold insulated box according to any one of claims 1 to 6. Joint between the joint and the side panels and the bottom panel between adjacent side panels, cold insulation according to any one of claims 1 to 7, characterized in that it is protected by a flexible heat insulation material Box.

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