WO2018143468A1

WO2018143468A1 - Cooling device, distribution packaging container, distribution system, and distribution method

Info

Publication number: WO2018143468A1
Application number: PCT/JP2018/003948
Authority: WO
Inventors: 勝一香村; 輝心黄; 恭平勢造; 夕香内海
Original assignee: シャープ株式会社
Priority date: 2017-02-06
Filing date: 2018-02-06
Publication date: 2018-08-09
Also published as: JP7015254B2; CN110268209A; CN110268209B; US20190390921A1; JPWO2018143468A1

Abstract

Provided is a cooling device capable of prolonging a cooling function by causing a latent heat storage material to be at least dormant in a process of distribution. The cooling device which is used in a distribution packaging container and adjusts the temperature of an object to be cooled includes: a latent heat storage material that has a supercooling characteristic and has a temperature range as a dormant period between a solidification temperature, at which a phase change is started from a liquid phase to a solid phase, and a melting temperature, at which a phase change is started from a solid phase to a liquid phase; and an accommodation section that accommodates the latent heat storage material, wherein the latent heat storage material is selected correspondingly to the temperature range in which the object to be cooled needs to be held, so as to have a range such that the main melting temperature is in the temperature range in which the object to be cooled needs to be held and such that at least the temperature range of the dormant period and the temperature range in which the object to be cooled needs to be held overlap each other.

Description

Cold insulator, distribution packing container, distribution system and distribution method

The present invention relates to a cold insulator, a logistics packing container, a logistics system, and a logistics method using a latent heat storage material.

When transporting food, pharmaceuticals, electronic parts, etc., a logistics system that is managed at a constant temperature from the shipper to the consignee for the purpose of preventing the deterioration of freshness and quality. And services support the current rich life.

In the constant temperature logistics system as described above, the transported object is generally packed in a heat-insulating box to suppress the inflow and outflow of heat between the environmental temperature and the transported object, and the temperature difference from the environmental temperature is large. In preparation for a case where the heat inflow / outflow becomes large, a heat storage material (cold storage material) for absorbing or releasing the heat is bundled and transported.

Also, in the current constant temperature logistics system, it is rare that the shipper is transported directly to the consignee, and it goes through an intermediary base for reasons such as adjustment of transport schedule, inspection, and re-sorting of transported items. The mediation base also requires temperature management, and is temporarily stored in a facility having an electrical heat-retaining function such as a refrigerated warehouse. Furthermore, when it takes a long time during the transportation period from the shipper to the intermediary base, etc., it is transported by a vehicle having an electrical heat insulation and cooling function.

However, in the conventional logistics systems, the temperature at which the heat storage material radiates and absorbs heat and the holding temperature during the transportation period and at the brokerage base are considered for the temperature range where the transported object is to be held. No consideration was given to the materials and the temperature during the transport period or at the brokerage site.

For this reason, heat storage materials unnecessarily dissipate and absorb heat during transportation and at brokerage bases, and energy is wasted, increasing the amount of cold storage materials and replacing the cold storage materials at the brokerage bases, and reducing costs. It has become.

In patent document 1, in the cool box provided with the cool box main body which accommodates articles | goods, and the cool storage unit which cools the inside of a store | warehouse | chamber, the said cool storage unit makes the cool storage material which consists of a fluid which has a cool storage function freely, and each transport A technique is disclosed in which a regenerator replacement device is arranged at each base to reduce the time required for cold storage in a cold storage.

In Patent Document 2, as a method capable of maintaining and delivering a cold-retained product at a cold-retention temperature consisting of a plus temperature required at the time of cold-reserved delivery without using a cold-reserved vehicle, a cold storage material and a cold-retained product are accommodated in a cold storage box. In addition, a technique is disclosed in which the first regenerator is pre-cooled (not frozen) at a plus temperature, and the heat insulating material and the first regenerator are arranged between the frozen second regenerator and the cold-retaining product.

JP 2001-66028 A JP 2005-300052 A

However, in the technique described in Patent Document 1, it is necessary to replace the regenerator material at each site, and transport is not possible unless the site has a regenerator replacement device. Moreover, since it is a fluid cold storage agent, the thermal energy to be stored is sensible heat, and the amount of energy is extremely small. Therefore, replacement at each base is indispensable.

Moreover, in the technique of patent document 2, since the cool storage body which has a melting temperature lower in temperature than a cold storage required product is used, even if it goes through the cool storage warehouse, the temperature in a warehouse is the melting temperature of a cool storage body. Since it has to be higher and the regenerator is promoted to melt, there is no choice but to mount a large amount of the regenerator in order to support delivery over a long period of time. Therefore, the volume of the cool-requiring product that can be delivered becomes smaller than the capacity of the packaging container.

One aspect of the present invention has been made in view of such circumstances, and an object of the present invention is to provide a cold insulator capable of extending the cooling function by at least sleeping the latent heat storage material in the course of physical distribution. And

In order to achieve the above object, one aspect of the present invention has taken the following measures. That is, the cold insulator according to one aspect of the present invention is a cold insulator used for a physical distribution packaging container and adjusts the temperature of an object to be cooled, has a supercooling characteristic, and starts to change from a liquid phase to a solid phase. A latent heat storage material having a temperature range as a dormancy period between a solidification temperature and a melting start temperature at which a phase starts to change from a solid phase to a liquid phase, and a storage unit that stores the latent heat storage material, the latent heat storage Depending on the temperature range of the object to be kept cold, the main melting temperature is included in the temperature range to be kept of the object to be kept cold, and at least the dormant temperature range and the holding of the object to be kept cold The temperature range to be performed is selected to have a range that overlaps.

According to one aspect of the present invention, the object to be kept cold can be kept in the vicinity of the main melting temperature by the latent heat of the latent heat storage material during the time period when the temperature is not controlled. In addition, when the lower limit of the temperature at which the object to be kept cold is lower than the solidification temperature, the temperature to be controlled is lower than the solidification temperature and higher than the lower limit in the time period for controlling the temperature. By cooling, the latent heat storage material can be phase-changed from the liquid phase to the solid phase and can be regenerated. Even if this is not the case, in the time zone for controlling the temperature, the temperature to be controlled is set to a temperature within the range where the temperature range of the dormant period and the temperature range where the object to be kept cold is overlapped. At least it can be made to sleep, and the cooling function can be extended.

It is sectional drawing of the cold insulator which concerns on 1st Embodiment. It is a conceptual diagram which shows the example of a DSC curve, how to obtain | require melting start temperature, and main melting temperature. It is sectional drawing of the physical distribution packaging container which concerns on 1st Embodiment. It is a conceptual diagram which shows the use condition of the cold insulator which concerns on 1st Embodiment, and a physical distribution packaging container. It is the conceptual diagram which showed the temperature range at the time of controlling temperature with a cooling device with respect to the latent heat storage material used for the physical distribution system which concerns on 1st Embodiment, and the temperature range where articles | goods should be hold | maintained. It is the conceptual diagram which showed the temperature range at the time of controlling temperature with a cooling device with respect to the latent heat storage material used for the physical distribution system which concerns on 1st Embodiment, and the temperature range where articles | goods should be hold | maintained. It is the conceptual diagram which showed the temperature range of the physical distribution system using the conventional heat storage material. It is a conceptual diagram which shows the process of manufacture of the cold insulator which concerns on 1st Embodiment. It is a conceptual diagram which shows the process of manufacture of the cold insulator which concerns on 1st Embodiment. It is a conceptual diagram which shows the process of manufacture of the cold insulator which concerns on 1st Embodiment. It is a table | surface which shows the time schedule and environmental temperature of experiment with respect to Example 1, 2 and a comparative example. It is a graph which shows the change of the surface temperature of each cold insulator in the experiment with respect to Examples 1, 2 and Comparative Example 1. 6 is a cross-sectional view of a physical distribution packaging container according to Embodiment 2. FIG. It is the table | surface which showed the example of the goods assumed to be transported using the example of the latent heat storage material which has the temperature range of a dormant period, and the latent heat storage material. It is a figure which shows the temperature change of the chilled goods of Example 4 and Comparative Example 2. FIG.

The terms used in this application are defined below. Except as otherwise noted, it shall be interpreted according to the following definitions.

(1) The solidification temperature is a temperature at which crystal nuclei begin to occur when the liquid latent heat storage material is held at a constant temperature. In the present invention, at least 50 ml of latent heat storage material is placed in a plastic bottle and placed in a cool box (including a refrigerator, freezer, programmable thermostat), and measured by a thermocouple while lowering the temperature of the cool box. Value. Although the supercooling phenomenon is known to depend on the volume, the inventors' experiments have confirmed that the effect of the volume is small if it is 50 ml or more.

(2) The melting start temperature is a temperature obtained by extrapolating the temperature at which the endothermic peak begins in the DSC curve obtained by differential scanning calorimetry (DSC) to the baseline. FIG. 2 is a conceptual diagram showing an example of a DSC curve and how to obtain the melting start temperature and the main melting temperature. When the solid-phase latent heat storage material is placed at a temperature equal to or higher than the melting start temperature, the latent heat storage material starts to melt.

(3) The main melting temperature is the temperature of the endothermic peak in the DSC curve obtained by differential scanning calorimetry (DSC). If the latent heat storage material in the solid phase is set to a temperature equal to or higher than the main melting temperature, the latent heat storage material is maintained at a temperature in the vicinity of the main melting temperature while the latent heat storage material changes into the liquid phase.

(4) The temperature range as the dormancy period (temperature range of the dormancy period) is a temperature range between the solidification temperature of the latent heat storage material and the melting start temperature.

(5) The temperature range in the regeneration period is a temperature range below the solidification temperature of the latent heat storage material.

(6) Dormant of the latent heat storage material means that the latent heat storage material is kept in the solid state when the latent heat storage material is in a solid phase by placing the latent heat storage material in a temperature range of the sleep period. In the liquid phase, the liquid phase remains as it is. In addition, the solid phase and liquid phase coexist, that is, the solid state latent heat storage material is exposed to a temperature environment higher than the melting temperature for a short time, and the latent heat storage material partially melted is in the dormant period. However, depending on the conditions, for example, when placed at a dormant temperature close to the solidification temperature, the solid phase particles function as crystal nuclei. The liquid phase part may change into a solid phase. In contrast, in a latent heat storage material that does not have a dormancy period, the coexistence state of the solid phase and the liquid phase is a phase transition state, and even if placed in a temperature environment equal to the phase change temperature, the interface between the solid phase and the liquid phase Therefore, melting of the solid phase is promoted.

(7) Regeneration of the latent heat storage material is a phase change from a liquid phase to a solid phase by placing the latent heat storage material at a temperature below the solidification temperature. Regeneration is also referred to when the liquid phase changes to a solid phase within the dormant temperature range.

The inventors of the present invention have a supercooling characteristic when adjusting the temperature of an object to be cooled with a cold insulation tool having a latent heat storage material, and have a solidification temperature and a solid phase from a solid phase to a liquid phase. By using a latent heat storage material having a temperature range as a diapause period between the melting start temperature at which the phase starts to change and controlling the temperature within the temperature range of the diapause period, the latent heat storage material can be at least dormant. And found the present invention.

Thereby, the present inventors made it possible to extend the cooling function by at least putting the latent heat storage material into a dormant state in the physical distribution process. Embodiments of the present invention will be specifically described below with reference to the drawings.

[First Embodiment]
[Composition of cooler]
The cold insulator according to one aspect of the present invention is a cold insulator used for a physical distribution packaging container and adjusts the temperature of an object to be cooled, has a supercooling characteristic, and starts to change from a liquid phase to a solid phase. And a latent heat storage material having a temperature range as a diapause period between the solid phase and the melting start temperature at which the phase starts to change from a solid phase to a liquid phase, and a storage unit that stores the latent heat storage material. FIG. 1 is a cross-sectional view of a cold insulator 100 according to the present embodiment. As shown in FIG. 1, the cold insulator 100 according to the present embodiment includes a housing portion 120 that is a hollow structure region inside the cold insulator body 110, and the housing portion 120 includes a heat storage layer 130.

The cold insulator main body 110 includes a hollow structure accommodating portion 120 for enclosing the heat storage layer 130. The cold insulator main body 110 is formed of a resin material such as polyethylene, polypropylene, polyester, polyurethane, polycarbonate, polyvinyl chloride, or polyamide, or a metal such as aluminum, stainless steel, copper, or silver, or an inorganic material such as glass, ceramic, or ceramic. be able to. A resin material is preferable from the viewpoint of easy formation of a hollow structure and durability. In addition, it is preferable to attach a seal of a temperature indicating material indicating the temperature to the cold insulator main body 110 because the temperature of the cold insulator can be determined.

The heat storage layer 130 has a supercooling characteristic, and has a temperature range as a dormancy period between a solidification temperature at which a phase change starts from a liquid phase to a solid phase and a melting start temperature at which a phase change starts from the solid phase to a liquid phase. The latent heat storage material 150 is included. As the material of the latent heat storage material 150, a material containing at least water molecules is preferable, and thereby, a supercooling characteristic is likely to occur and a sleep period is likely to occur. Specifically, such as tetrabutylammonium fluoride, tetrabutylammonium chloride, tetrabutylammonium bromide, tetrabutylammonium iodide, tetrabutylammonium nitrate, tetrabutylammonium benzoate, tributylpentylammonium bromide, tetrabutylphosphonium bromide Semi-clathrate hydrates of alkyl quaternary salts having 1 to 6 carbon atoms, clathrate hydrates of organic compounds having a molecular weight of 200 or less such as tetrahydrofuran, dioxane, cyclopentane, cyclohexane, acetone, sodium chloride, An inorganic salt aqueous solution such as potassium chloride or ammonium chloride, or an inorganic salt hydrate such as sodium acetate trihydrate or sodium sulfate decahydrate can be used. In addition, from the viewpoint of use in logistics, from quasi-clathrate hydrates of alkyl quaternary salts having 1 to 6 carbon atoms that are low in toxicity and non-flammable from the viewpoint of safety and hygiene, inorganic salt aqueous solutions and inorganic salt hydrates It is preferable to use the constructed latent heat storage material 150. In particular, an aqueous solution of a quasi-clathrate hydrate using an alkyl quaternary salt as a guest is preferable in that it easily causes supercooling characteristics, has low toxicity, and is nonflammable. In addition, even a latent heat storage material in which an inorganic salt such as potassium chloride, potassium bromide, cesium bromide or potassium nitrate is further added to an aqueous solution of a quasi-clathrate hydrate using an alkyl quaternary salt as a guest. Good. An aqueous solution of a quasi-clathrate hydrate having an alkyl quaternary salt as a guest and a latent heat storage material in which an inorganic salt is added to the aqueous solution have a temperature range higher than 0 ° C, particularly a chilled temperature range (over 0 ° C). 10 ° C or lower) or temperature range suitable for storage of fruit and vegetable products (over 0 ° C and below 15 ° C, especially leafy vegetables such as vegetable products with discoloration and damage when kept at 0 ° C for a long time) It is preferable because a latent heat storage material having a main melting temperature of 2 ° C. or higher and 15 ° C. or lower is easy to realize, and can be easily adjusted by the type of alkyl quaternary salt and the concentration of aqueous solution. Furthermore, a latent heat storage material having a melting start temperature of 5 ° C. or higher and a main melting temperature of less than 10 ° C. may be dormant in a temperature range (over 0 ° C. and below 5 ° C.) in a general refrigeration facility. It is preferable because it can be used for cold storage and transportation of both chilled and vegetable products.

A supercooling inhibitor may be added to the material forming the heat storage layer 130 in order to adjust the temperature range during the dormant period. As the supercooling inhibitor, the solubility rapidly decreases at a specific temperature equal to or higher than the solidification temperature of the latent heat storage material 150 included in the heat storage layer 130, and crystals are precipitated, thereby promoting nucleation of the latent heat storage material 150. Those are preferred. Furthermore, a thing with low toxicity is preferable on safety and health. From such a viewpoint, salts that are soluble at room temperature in the latent heat storage material such as potassium alum, ammonium alum, sodium carbonate, and disodium hydrogen phosphate can be mentioned. The supercooling inhibitor may be a powder that promotes the nucleation of the latent heat storage material and is hardly soluble or insoluble in the latent heat storage material. From such a viewpoint, activated carbon, aluminum oxide, titanium oxide, silver iodide, and sodium tetraborate are listed. Further, it is preferable that a preservative or an antibacterial agent is added to the material forming the heat storage layer 130. Further, a thickening agent such as xanthan gum, guar gum, carboxymethyl cellulose, sodium polyacrylate, or the like may be added to the material forming the heat storage layer 130. Note that the material of one embodiment of the present invention is not limited to the materials exemplified above.

The latent heat storage material 150 is selected according to the temperature range to be held defined for each cold insulation object. In that case, the main melting temperature of the latent heat storage material 150 is included in the temperature range in which the object to be kept cold is to be held, and at least the temperature range in the dormant period of the latent heat storage material 150 and the temperature range in which the object to be kept cold is held. The latent heat storage material 150 having an overlapping range is selected. By selecting in this way, during the time period when the temperature is not controlled, the object to be kept cold can be kept near the main melting temperature by the latent heat of the latent heat storage material 150. In addition, in the time period for controlling the temperature, the latent heat storage material 150 is at least dormant by setting the temperature to be controlled to a temperature within a range where the temperature range of the dormant period overlaps with the temperature range where the object to be cooled is held. The cooling function can be extended.

When the latent heat storage material 150 is selected according to the temperature range to be held for each cold insulation object, the main melting temperature of the latent heat storage material 150 is included in the temperature range to be held by the cold insulation object. More preferably, the latent heat storage material 150 is selected such that the solidification temperature of the latent heat storage material 150 is higher than the lower limit of the temperature range in which the cold object is to be held. By selecting in this way, in the time zone for controlling the temperature, the temperature to be controlled can be set to a temperature within the range where the temperature range of the regeneration period and the temperature range where the object to be kept cold overlaps, The latent heat storage material 150 can be phase-changed from the liquid phase to the solid phase and can be regenerated. In this case, since the temperature range of the dormant period is included in the temperature range in which the object to be kept cold is to be held, the temperature to be controlled may be set to the temperature range of the dormant period in the time period for controlling the temperature. The latent heat storage material 150 can be put to sleep. The cooling function can be extended both when the latent heat storage material 150 is regenerated and when the latent heat storage material 150 is rested.

It is preferable that the temperature range in the dormant period of the latent heat storage material 150 used for the cold insulator 100 is 1 ° C. or higher. By using such a latent heat storage material 150, it is possible to flexibly set the temperature to be controlled to make the latent heat storage material 150 sleep in the time period for controlling the temperature within the temperature range of the sleep period.

[Composition of logistics packing container]
FIG. 3 is a cross-sectional view of the physical distribution packaging container 200 according to the present embodiment. The physical distribution packaging container 200 is selected according to the physical distribution packaging container body 210, the cold insulation holding unit 220 that is provided inside the physical distribution packaging container body 210 and holds the cold insulation tool, and the temperature range in which the article to be packed is to be held And the article storage unit 230 that is provided inside the physical distribution packaging container body 210 and stores articles.

The physical distribution packaging container body 210 includes a housing part 240 and a lid part 250. The accommodating part 240 has an opening part for taking in and out the article and the cold insulator 100, and the lid part 250 closes the opening part. The accommodating portion 240 and the lid portion 250 may be connected or separated. In order to reduce the entry and exit of heat from the inside of the physical distribution packaging container 200, it is preferable that the lid portion 250 has a structure in close contact with the accommodating portion 240.

The physical distribution packaging container body 210 is preferably formed of a heat insulating material such as expanded polystyrene, expanded urethane, or vacuum heat insulating material. You may provide the heat insulation layer formed with the material which has heat insulation in the inner side and the outer side of the main body formed with the material which does not consider heat insulation. In addition, the physical distribution packaging container body 210 may have a size that can be carried by a person. For example, a huge container such as a container may function as the physical distribution packaging container body 210. The physical distribution packaging container may be a container equipped with a cooling device such as a reefer container. The reefer container can accommodate a large amount of articles, and can function as a cold storage during a period in which power can be supplied during transportation. Therefore, it is preferable to use it for import / export which requires a long time for transportation of goods. In the conventional reefer container, it is difficult to maintain the temperature of the article during a non-power supply period such as during censorship at customs, and the freshness and quality of the article are problematic. However, when the reefer container is used as the physical distribution packaging container according to one aspect of the present invention, the shipper accommodates the cold insulator and the article according to one aspect of the present invention in the reefer container, so that the present invention can be applied when power is supplied. In one aspect, the cold insulator is in a dormant period, and the latent heat storage material of the cold insulator is activated during the non-power supply period, and the temperature range in which the temperature of the article should be maintained can be maintained. For this reason, it is possible to import and export articles with significant deterioration in freshness and quality over a long period of time and set a flexible transportation route, for example, if they deviate from the temperature range to be kept, such as wine, chocolate, and fruits. .

The cold insulator holding part 220 is provided inside the physical distribution packaging container body 210. The physical distribution packaging container 200 is used by placing the cold insulator 100 on the cold insulator holder 220. Thereby, the inside of the physical distribution packaging container body 210 is maintained at a temperature corresponding to the cold insulator 100. The cold insulator holding part 220 may have a structure in which the cold insulator 100 can be fixed. In addition, the cold insulation tool 100 may be built in the physical distribution packaging container body 210, or the cold insulation tool 100 itself may be the physical distribution packaging container 200.

The cold insulator 100 used for the physical distribution packaging container 200 is selected according to the temperature range in which the goods to be packed are to be held. In the cold insulator 100, the main melting temperature of the latent heat storage material 150 used in the cold insulator 100 is included in the temperature range in which the article should be held, and at least the temperature range in the dormant period and the temperature range in which the article should be held overlap. A material using the latent heat storage material 150 having such a range is selected. By selecting in this way, the article can be kept cool in the vicinity of the main melting temperature due to the latent heat of the latent heat storage material 150 during the time period when the temperature is not controlled in the physical distribution process. In addition, in the time period for controlling the temperature, the latent heat storage material 150 is at least dormant by setting the temperature to be controlled to a temperature within a range where the temperature range of the dormant period overlaps with the temperature range where the object to be cooled is held. The cooling function can be extended.

In the cold insulator 100, the main melting temperature of the latent heat storage material 150 used in the cold insulator 100 is included in the temperature range in which the article is to be held, and the solidification temperature is higher than the lower limit of the temperature range in which the article is to be held. It is preferable that the cold insulator 100 using the latent heat storage material 150 is selected. By selecting in this way, in the time zone in which the temperature is controlled in the physical distribution process, the temperature to be controlled is set to a temperature within the range where the temperature range in the regeneration period and the temperature range in which the object to be kept cold overlaps. The latent heat storage material 150 can be phase-changed from the liquid phase to the solid phase and can be regenerated. In this case, since the temperature range of the dormant period is included in the temperature range to be held of the article, the temperature to be controlled can be set to the temperature range of the dormant period in the time period for controlling the temperature, The latent heat storage material 150 can be put to sleep. The cooling function can be extended both when the latent heat storage material 150 is regenerated and when the latent heat storage material 150 is rested.

Moreover, when selecting the thing using the latent heat storage material 150 which has the above temperature ranges, the cooler 100 is further used for the general cooling device (refrigeration (refrigeration) car, refrigeration (refrigeration)) used for physical distribution. Control temperature (set temperature) such as refrigeration temperature and refrigeration temperature that is normally set in warehouses, refrigeration (freezer) lockers, reefer containers, etc.) overlaps the temperature range in which dormancy occurs and the temperature range in which the article should be held The range or the temperature range in the regeneration period and the temperature range in which the article is to be held are preferably selected to be included in an overlapping range. Although it is not always possible to select in this way, by selecting in this way, it is possible to carry out physical distribution using the physical distribution packaging container 200 in the physical distribution process using a cooling device having a general set temperature, and the transportation route. Can be set flexibly.

When selecting the cold insulator 100, if the solidification temperature of the latent heat storage material 150 used for the cold insulator 100 is selected to be lower than the lower limit of the temperature range in which the article is to be held, the article and the cold insulator 100 are directly connected. So that the temperature of the article storage unit 230 does not become lower than the lower limit of the temperature range in which the article is to be held, a heat insulating material is provided between the article and the cooler 100, and the cooler 100 is mounted. Put. Further, in this case, the latent heat storage material 150 cannot be regenerated below the solidification temperature in the physical distribution process, but when the latent heat storage material 150 is put to sleep as described in the definition of sleep of the latent heat storage material. There are times to play.

The article storage unit 230 is provided inside the physical distribution packaging container body 210, and stores articles in which a temperature range to be held is determined. Thereby, it is hold | maintained at the temperature of the temperature range which should hold | maintain an article | item. FIG. 4 is a conceptual diagram illustrating a usage state of the cold insulator 100 and the physical distribution packaging container 200 according to the present embodiment. As shown in FIG. 4, the cold insulation tool 100 and the physical distribution packaging container 200 according to the present embodiment are used in a state where the article and the cold insulation tool 100 are packed in the physical distribution packaging container 200.

[Configuration of logistics system]
The physical distribution system according to the present embodiment is a physical distribution system in which an article in which a temperature range to be held is determined is packed in the physical distribution packaging container 200 together with the cooler 100 and delivered from the shipper to the consignee by the carrier. And a cooling device that controls the temperature outside the physical distribution packaging container 200 to a temperature range in which the article should be held, at least before and after the time period when the temperature is not controlled, and the cooling device is used for the cold insulator 100. The physical distribution packaging container 200 is cooled in an overlapping range of the temperature range of the latent heat storage material 150 in the dormant period and the temperature range in which the article is to be held.

FIG. 5A is a conceptual diagram illustrating a temperature range when the temperature is controlled by the cooling device with respect to the latent heat storage material 150 used in the physical distribution system according to the present embodiment and the temperature range in which the article is to be held. . As shown in FIG. 5A, in the physical distribution system according to the present embodiment, the temperature range when the temperature is controlled by the cooling device is the dormant temperature of the latent heat storage material 150 used in the cold insulator 100 of the physical distribution packaging container 200. This is an overlapping range between the range and the temperature range in which the article should be held. By controlling the temperature in such a temperature range, the latent heat storage material 150 can be at least dormant, and the cooling function can be extended. Of the time and number of times for controlling the temperature with the cooling device, only a part may be controlled within the overlapping range. Even in that case, when the temperature is controlled in the overlapping range, the latent heat storage material 150 can be at least dormant, and the cooling function can be extended. The cooling device includes a refrigerated (refrigerated) vehicle, a refrigerated (refrigerated) warehouse, a refrigerated (frozen) locker, a reefer container, and the like. Further, the cooling device only needs to have a means for cooling, and may be a latent heat storage material having a main melting temperature lower than the main melting temperature of the latent heat storage material 150.

Moreover, in the physical distribution system according to the present embodiment, the cooling device cools the physical packaging container 200 at a temperature lower than the solidification temperature of the latent heat storage material and higher than the lower limit of the temperature range in which the article should be held, It is preferable that the latent heat storage material 150 changes phase from a liquid phase to a solid phase.

FIG. 5B is a conceptual diagram illustrating a temperature range when the temperature is controlled by the cooling device with respect to the latent heat storage material 150 used in the physical distribution system according to the present embodiment and the temperature range in which the article is to be held. . FIG. 5B shows a case where the main melting temperature of the latent heat storage material 150 is included in the temperature range in which the article is held and the solidification temperature is selected to be higher than the lower limit of the temperature range in which the article is held. Yes. In the case shown in FIG. 5B, the temperature range when the temperature is controlled by the cooling device can be higher than the lower limit of the temperature range in which the article is held and lower than the melting start temperature of the latent heat storage material 150. By controlling the temperature within such a temperature range, the latent heat storage material 150 can sleep or be regenerated, and the cooling function can be extended. Further, in this temperature range, the temperature is lower than the solidification temperature of the latent heat storage material 150 and higher than the lower limit of the temperature range in which the article should be held (the temperature range in the regeneration period and the temperature range in which the article should be held). When the temperature is controlled in the overlapping range), the latent heat storage material 150 can be reliably regenerated. Even in this case, only a part of the time and number of times of controlling the temperature with the cooling device may be controlled within the control range.

FIG. 5C is a conceptual diagram showing a temperature range of a physical distribution system using a conventional heat storage material. As shown in FIG. 5C, in the conventional distribution system using the heat storage material, the temperature range in which the heat storage material can be held and the control temperature at the mediation base are considered with respect to the temperature range in which the article should be held. However, the relationship between the heat storage material and the control temperature at the brokerage site is not taken into consideration.

[Method of manufacturing cold insulator]
Next, a method for manufacturing the cold insulator 100 according to the present embodiment will be described. 6A to 6C are conceptual diagrams showing steps of manufacturing the cold insulator 100 according to the present embodiment. First, a cold insulator main body 110 having a hollow structure region as shown in FIG. 6A is prepared. The cold insulator main body 110 is preferably provided with an inlet 170 through which the latent heat storage material 150 can be injected. Next, the latent heat storage material 150 is injected. An injection method is not limited, but an injection method using a cylinder pump or a Mono pump is preferable. FIG. 6B shows an example using a cylinder pump. As shown in FIG. 6B, the filling hose of the cylinder pump is set in the inlet 170 of the cold insulator main body 110, and the suction hose is set in the container containing the latent heat storage material 150. Next, the latent heat storage material 150 is sucked up by lowering the piston of the cylinder pump, and after filling the piston with the heat storage material, the latent heat storage material 150 is injected into the cold insulator main body 110 by raising the piston.

Then, as shown in FIG. 6C, a plug 190 is plugged into the inlet 170 of the cold insulator main body 110. As a method of plugging 190, there are a method of sealing with an existing method such as ultrasonic welding or heat welding, and a method of using a screw plug that can be freely opened and closed by hand. When sealing with ultrasonic welding or heat welding, the latent heat storage material 150 or the like is not likely to leak, which is preferable.

Finally, the cold insulator 100 is allowed to stand in a temperature environment equal to or lower than the solidification temperature of the latent heat storage material 150 to solidify the latent heat storage material 150. By such a process, the cold insulator 100 of the present embodiment is manufactured. As described here, the latent heat storage material 150 may be solidified before placing the cold insulator 100 on the distribution packaging container 200, but the distribution packaging container 200 may be solidified at the first stage of the distribution process. When the temperature environment can be set to 150 or less, the latent heat storage material 150 in the cold insulator 100 can be solidified at that stage. The technical scope of the present invention is not limited to the above embodiment, and various modifications can be made without departing from the spirit of the present invention.

[Examples of articles assumed to be latent heat storage materials]
FIG. 10 is a table showing an example of a latent heat storage material having a temperature range of a dormant period and an example of an article assumed to be transported by a cold insulator, a distribution packaging container, and a distribution system using the latent heat storage material. . By selecting an appropriate one from the latent heat storage materials having various solidification temperatures and dormant temperature ranges such as the examples shown in this table, various articles were held at temperatures within the temperature range to be held. It can be transported without changing the latent heat storage material in the physical distribution process. On the other hand, a latent heat storage material that does not have a dormant temperature range as shown in Comparative Example 1 has only a process of either storing latent heat by freezing or using latent heat by melting. However, the latent heat storage materials A to K are regenerated below the solidification temperature (accumulates latent heat), dormant (maintains latent heat) within the range from the solidification temperature to the melting start temperature, and melt at a temperature higher than the melting start temperature (use latent heat). Therefore, a flexible logistics system can be designed.

[Example 1]
Example 1 is an example of the cold insulator according to the first embodiment. First, a blow molded container (material: polyethylene, outer shape: 180 * 280 * 29 mm / t (cooling body)) as shown in Fig. 6A was prepared, and then a cylinder pump as shown in Fig. 6B was installed in the blow molded container. 800 g of the latent heat storage material was injected using a liquid filling machine equipped with a 38 wt% aqueous solution of tetrabutylammonium bromide as a supercooling inhibitor, based on the weight of the aqueous solution. 2% by weight sodium carbonate and 2.5% by weight disodium hydrogen phosphate were added and stirred well, and the inlet was capped using an ultrasonic welder and welded. Finally, it was left in a refrigerator room with a temperature of about 3 ° C. for more than 4 hours to solidify the latent heat storage material to form a heat storage layer, the solidification temperature of the latent heat storage material, the melting start temperature, The melting temperature was evaluated from differential scanning calorimetry (use apparatus: DSC8213 manufactured by Rigaku, measurement temperature range: −30 to 30 ° C., cooling rate: −5 ° C./min, heating rate: 5 ° C./min), The solidification temperature was 5 ° C., the melting start temperature was 10 ° C., and the main melting temperature was 12 ° C. In this way, the cold insulator of Example 1 using the latent heat storage material having the temperature range of the dormant period as the heat storage layer was obtained. Produced.

[Comparative Example 2]
As Comparative Example 2, 800 g of water was poured into the same blow-molded container as in Example 1 in the same amount as in Example 1, and a sealed cold insulation tool was prepared. This was solidified in a freezer at about −18 ° C. as Comparative Example 2. When the solidification temperature, the melting start temperature, and the main melting temperature of this latent heat storage material were evaluated by the same method as in Example 1, the solidification temperature was −10 ° C., the melting start temperature was −1 ° C., and the main melting temperature was 0. ° C.

7. Store and transport the fruits and vegetables with the temperature to be maintained above 0 ° C and below 15 ° C in the physical distribution packaging container shown in FIG. 3 from the shipper to the consignee at the time schedule and environmental temperature shown in FIG. Assuming that the environment temperature was changed. FIG. 8 shows the temperature history of the cold insulators of Example 1 and Comparative Example 2 at that time.

[Evaluation of Example 1 and Comparative Example 2 and confirmation of effect]
As shown in FIG. 8, in Example 1, the temperature gradually increased as the environmental temperature increased to 25 ° C. or more after 11 hours from the start of measurement. After that, it was confirmed that there was no rapid temperature rise and that the vicinity of 12 ° C. was maintained for a long time. In the period from the start of measurement to 4 hours to 11 hours, the temperature of the latent heat storage material followed the environmental temperature and maintained 8 ° C. When the latent heat storage material was taken out during this period and the solidified state was visually confirmed, it was confirmed that there was almost no melting of the latent heat storage material. This is probably because the latent heat storage material of Example 1 has a solidification temperature of around 5 ° C., a melting start temperature of around 10 ° C., and a main melting temperature of around 12 ° C. That is, since the temperature range of the dormant period is 5 to 10 ° C., melting does not proceed during the period of the environmental temperature of 8 ° C., and the latent heat storage material is considered to be dormant. These confirmed that the cooling function can be extended.

On the other hand, the cold insulation tool of Comparative Example 2 showed a rapid temperature increase after 17 hours from the start of measurement, and reached the ambient temperature of 25 ° C. after 20 hours. This is because the main melting temperature of the latent heat storage material made of water is around 0 ° C, and even in a refrigerated warehouse or refrigerated vehicle, the environmental temperature is higher than the main melting temperature, so the melting gradually proceeds, and in around 17 hours. It is thought that the temperature has risen by using up the latent heat. That is, since the temperature range to be maintained deviates in a short time, it is difficult to maintain freshness and quality for a long time.

In other words, when water is used as a latent heat storage material, even if the article and the latent heat storage material are kept cold in a refrigerated warehouse or the like in the distribution process as in the above experiment, the melting start temperature is the temperature of the refrigerated warehouse (for example, Therefore, it is necessary to replace the latent heat storage material as appropriate, and a delay in transportation due to the replacement becomes a problem. On the other hand, in the cold insulator of Example 1 and the physical distribution system using the same, such a problem is solved, and the shipper only has to set it at the beginning of packing the package. Further, when using a latent heat storage material having a dormant temperature range as in the first embodiment, the facility for regenerating (freezing) the latent heat storage material may be one having a refrigeration temperature of 0 ° C. or higher, so that the entire distribution system It leads to energy saving as.

When water is used as a latent heat storage material, the temperature range during the dormant period is -10 to -1 ° C (adjustable by adding the values of the above experiment, supercooling inhibitor, etc.), so the article should be retained When transporting an article having a temperature range that overlaps the range of −10 to −1 ° C., as in Example 1, use a refrigerated warehouse or the like that keeps the temperature in the range where the temperature overlaps in the distribution process. The latent heat storage material can be put to sleep or regenerated. However, as in Comparative Example 2, when used for transporting an article that does not have a range where the temperature range of the dormant period and the temperature range where the article should be held overlap, the controlled and held temperature range is the main melting. Since there is a period higher than the temperature from the shipper to the consignee and there is no period to sleep or regenerate, melting proceeds and the cooling period cannot be extended. That is, even in the case of a latent heat storage material having a dormant temperature range, the main melting temperature is included in the temperature range in which the article is held, depending on the temperature range in which the article is held, and at least the temperature in the dormant period The range and the temperature range at which the article is to be held need to be selected to have a range that overlaps.

[Example 2]
Example 2 is an example of the cold insulator according to the first embodiment. In Example 2, two cold insulators having a heat storage layer having the same configuration as in Example 1 were produced in the same manner as in Example 1. FIG. 9 is a cross-sectional view of the physical distribution packaging container of this embodiment. As shown in FIG. 9, experiments similar to those in Example 1 and Comparative Example 2 were performed by using cold storage tools placed on the upper surface and the lower surface of the article container of the physical distribution packaging container. The temperature history of the cold insulator at that time is shown in FIG.

[Evaluation of Example 2 and confirmation of effect]
As shown in FIG. 8, in Example 2, the upper and lower cold insulators showed substantially the same temperature change. Therefore, it is considered that the temperature change of the article and the article storage unit was the same. Moreover, although the temperature change similar to Example 1 was shown to the middle, the temperature rise after 11 hours of Example 1 was the same as that of Example 1 on the upper surface and the lower surface of Example 1 compared to the temperature increase after 11 hours of Example 1. It was smaller. Thereby, when the quantity of a latent heat storage material increases, it turns out that the time which can maintain temperature becomes long.

[Example 3]
Example 3 is an example of the physical distribution system according to the first embodiment. Example 3 is an example in which an electronic commerce company as a shipper has a temperature range to be maintained as an article exceeding 0 ° C. and 15 ° C. fruits and vegetables through a refrigeration locker at 3 to 10 ° C. as a cooling device. A logistics system in which the consignee transports to the consignee's home is assumed. For example, suppose a commercial transaction in which a consignee picks up a package from a refrigerated locker installed at a commuting station. First, the electronic commerce company accommodated the cold insulator and fruits and vegetables of Example 1 in the physical distribution packaging container shown in FIG. Next, the transporter transported the physical distribution packaging container in a refrigerator car at 5 ° C. over 4 hours and accommodated it in a refrigerator refrigerator. After being stored in the refrigerated locker for 5 hours, the consignee opened the refrigerated locker and transported the physical distribution packaging container to the house in an environment of 25 ° C. over 1.5 hours. In this case, the consignee plays the role of the carrier. When the logistics packaging container was unpacked at home, the fruits and vegetables maintained their freshness, and the latent heat storage material of the cold insulator was in a state where melting and solidification coexisted, and was not completely melted. On the other hand, when the cold insulation tool of the distribution system of the present example was the cold insulation tool of Comparative Example 1, the freshness of the fruits and vegetables was confirmed to be deteriorated, and the latent heat storage material of the cold insulation tool was completely melted. That is, in the physical distribution system according to one aspect of the present invention, the controlled temperature range during the transport period in the refrigerated vehicle and the storage period in the refrigerated locker overlaps the temperature range in the latent period or the regeneration period of the latent heat storage material. Therefore, long-time transportation is possible.

[Example 4]
Example 4 is an example of the cold insulator according to the first embodiment. Example 4 prepared two cold insulators manufactured in the same manner as in Example 1 except that an aqueous solution of 37% by weight of tetrabutylammonium bromide and 8% by weight of potassium nitrate was used as the latent heat storage material. When the solidification temperature, melting start temperature and main melting temperature of this latent heat storage material were evaluated in the same manner as in Example 1, the solidification temperature was −12 ° C., the melting start temperature was 6 ° C., and the main melting temperature was 7 ° C. there were. The prepared cooler was frozen in a freezer at −18 ° C. and stored in a refrigerator at 3 to 5 ° C., and the temperature of the cooler was set at 3 to 5 ° C.

The temperature to be maintained exceeds 0 ° C in the time schedule and environmental temperature in which the shipper to the consignee are kept in a refrigerated warehouse with an environmental temperature of 5 ° C for 12 hours and then transported in an atmosphere of 30 ° C for another 24 hours. Example 4 in which dairy products are mixed with dairy products as chilled products of 10 ° C. or less, and leafy vegetables are mixed as fruits and vegetables with a temperature range of 0 ° C. to 15 ° C., preferably 2 ° C. to 15 ° C. And the cold insulation tool of Comparative Example 2 was housed in the physical distribution packaging container shown in FIG. FIG. 11 shows the temperature history of the chilled products of Example 4 and Comparative Example 2 at that time. In FIG. 11, the vertical axis of the graph indicates temperature, and the horizontal axis of the graph indicates measurement time. The thick line in the graph indicates the temperature history of the chilled product in the physical distribution packaging container of Example 4. The broken line in the graph indicates the temperature history of the chilled product in the physical distribution packaging container of Comparative Example 2. The dotted line in the graph indicates the environmental temperature.

[Evaluation of Example 4 and Comparative Example 2 and confirmation of effect]
As shown in FIG. 11, about Example 4, it approached 5 degreeC of environmental temperature after 3 hours from a measurement start, and 5 degreeC was hold | maintained 12 hours after the measurement start. Thereafter, the temperature rises to about 7 ° C., which is the main melting temperature of the latent heat storage material of Example 4, and then gradually rises to 10.0 ° C. after 36 hours. It could be transported by keeping the temperature above 10 ° C. and below 10 ° C. for 36 hours. This is because the latent heat storage material of Example 4 has a dormant temperature range of −12 to 6 ° C., so that the melting does not proceed during the period of the refrigerated warehouse with an environmental temperature of 5 ° C., and the latent heat storage material is I'm sleeping. Accordingly, the cooling function of the latent heat storage material can be extended, and the article to be kept cold can be transported for a long time in the temperature range where the article should be held. Further, the leafy vegetables and dairy products after 36 hours of transportation were not particularly discolored or damaged, and the freshness was maintained.

On the other hand, Comparative Example 2 approached 0 ° C., which is the main melting point of Comparative Example 2, in about 3 hours from the start of measurement, and after holding the vicinity of 0 ° C. for about 26 hours from the start of measurement, showed a rapid temperature increase, about It exceeded 10 ° C after 33 hours. This is because the main melting temperature of the latent heat storage material made of water is around 0 ° C, and the melting proceeds because the environmental temperature is higher than the main melting temperature even in a refrigerated warehouse. And it is difficult to keep it cool for a long time. In addition, the leafy vegetables after 36 hours of transportation contained a lot of water, and discoloration and damage were confirmed. This is presumably because the leafy vegetables were kept cold at around 0 ° C. for a long time of about 26 hours and thus suffered from low temperature damage.

In other words, the cold insulator of Example 4 can be transported for a long time while maintaining freshness and quality without departing from the temperature range to be held.

[Example 5]
Example 5 is an example of the physical distribution system according to the first embodiment. In Example 5, a fishery producer as a shipper, a fresh fish as a fresh product having a temperature range of more than −10 ° C. and not more than 5 ° C. as an article, and a cold insulator as shown in FIG. It was housed in an arranged logistics packaging container. In addition, the said cold insulator used the aqueous solution of tetrabutyl ammonium bromide 35 weight% and potassium nitrate 13 weight% as a latent heat storage material, and accommodated the thing of a solid-phase state. The latent heat storage material had a solidification temperature of −16 ° C., a melting start temperature of 3.2 ° C., and a main melting temperature of 4.2 ° C. Next, after the transporter transported in a refrigerator car kept at 2 to 3 ° C. for 8 hours, the logistics packaging container was dropped to the restaurant of the consignee restaurant. Finally, the consignee received and unpacked the physical distribution packaging container that had been allowed to stand at an average temperature of 25 ° C. for 5 hours at the store. At this time, the fresh fish as the article maintained the initial freshness, and no deterioration of the freshness was observed. Moreover, the latent heat storage material of the cold insulator is in a state where a solid phase and a liquid phase coexist, and is not completely melted. That is, since the cold insulation tool of Example 5 is dormant during the transport period in the refrigerator car at 2 to 3 ° C., the cold insulation time can be extended.

On the other hand, when ice is used as the latent heat storage material of Example 5, melting proceeds during the transport period in a refrigerator car at 2 to 3 ° C., so that the ice is completely melted and held when the consignee receives it. Exceeding the upper limit of the temperature range to be done. In other words, with the physical distribution system according to one aspect of the present invention, the transportation period in the refrigerated vehicle overlaps with the temperature range of the latent heat storage material in the dormant period, so that transportation for a long time is possible.

One embodiment of the present invention can employ the following configuration. That is, (1) A cold insulator according to one aspect of the present invention is a cold insulator used for a physical distribution packaging container and adjusts the temperature of an object to be cooled, has supercooling characteristics, and changes phase from a liquid phase to a solid phase. A latent heat storage material having a temperature range as a dormancy period between a solidification temperature that begins to melt and a melting start temperature that starts to change from a solid phase to a liquid phase, and a storage unit that stores the latent heat storage material, The latent heat storage material includes a main melting temperature in the temperature range to be held by the cold insulation object according to the temperature range to be held by the cold insulation object, and at least the temperature range of the dormant period and the cold insulation object. The temperature range to be maintained is selected to have a range that overlaps.

This allows the object to be kept cold in the vicinity of the main melting temperature due to the latent heat of the latent heat storage material during the time period when the temperature is not controlled. In addition, when the lower limit of the temperature at which the object to be kept cold is lower than the solidification temperature, the temperature to be controlled is lower than the solidification temperature and higher than the lower limit in the time period for controlling the temperature. By cooling, the latent heat storage material can be phase-changed from the liquid phase to the solid phase and can be regenerated. Even if this is not the case, in the time zone for controlling the temperature, the temperature to be controlled is set to a temperature within the range where the temperature range of the dormant period and the temperature range where the object to be kept cold is overlapped. At least it can be made to sleep, and the cooling function can be extended.

(2) Further, in the cold insulator according to one aspect of the present invention, the latent heat storage material is selected such that the solidification temperature is higher than a lower limit of a temperature range in which the cold object is to be held.

Thus, in the time zone for controlling the temperature, the temperature to be controlled is set lower than the solidification temperature of the latent heat storage material and higher than the lower limit of the temperature range in which the object to be cooled is held, thereby allowing the latent heat storage material to The phase can be changed from a liquid phase to a solid phase and can be regenerated.

(3) Moreover, in the cold insulator according to one aspect of the present invention, the latent heat storage material has a temperature range of 1 ° C. or more in the dormant period.

Thus, since the temperature range of the dormant period is 1 ° C. or more, the temperature to be controlled to make the latent heat storage material dormant can be set flexibly within the temperature range of the dormant period in the time period for controlling the temperature. it can.

(4) Moreover, in the cooler according to one aspect of the present invention, the latent heat storage material uses the energy of formation of a quasi-clathrate hydrate having an alkyl quaternary salt as a guest.

This makes it possible to specifically produce a cold insulator using a latent heat storage material having a dormant period.

(5) Moreover, in the cold insulator according to one aspect of the present invention, the latent heat storage material is nonflammable.

This makes it possible to improve safety even when a cold insulator using such a latent heat storage material is used in logistics.

(6) Moreover, in the cold insulator according to one aspect of the present invention, the latent heat storage material has a melting start temperature of 5 ° C. or higher and lower than 10 ° C., and a main melting temperature is higher than 5 ° C. and lower than 10 ° C.

This makes it possible to sleep in general refrigeration equipment, and can be applied to both the distribution of fruits and vegetables and chilled products.

(7) Moreover, the physical distribution packaging container of one aspect of the present invention is a physical distribution packaging container for packing an article, and is selected according to the physical distribution packaging container body and the temperature range in which the article to be packed is held. The cold insulator according to any one of the above (1) to (6), the cold insulation tool holding portion that is provided inside the physical distribution packaging container body and holds the cold insulation tool, and provided inside the physical distribution packaging container body. And an article accommodating portion for accommodating the article.

This makes it possible to use a cold insulator using a latent heat storage material having a dormancy period for logistics.

(8) Further, in the physical distribution system according to one aspect of the present invention, an article in which a temperature range to be held is defined is packed in the physical distribution packaging container described in (7) above, and the consignee by the consignor from the consignor. A cooling system that controls a temperature outside the distribution packaging container to a temperature range to be held of the article at least before and after a time zone during which the temperature is not controlled. The apparatus cools the physical distribution packaging container in an overlapping range of the temperature range of the dormant period and the temperature range of the article to be held.

Thus, in the distribution system using the distribution packaging container using the latent heat storage material having a dormant period, the latent heat storage material can be at least dormant, and the cooling function can be extended.

(9) Further, in the physical distribution system according to one aspect of the present invention, an article in which a temperature range to be held is defined is packed in the physical distribution packaging container described in the above (7), and the consignee by the consignor from the consignor. A cooling system that controls a temperature outside the distribution packaging container to a temperature range to be held of the article at least before and after a time zone during which the temperature is not controlled. The apparatus cools the physical distribution packaging container at a temperature lower than a solidification temperature of the latent heat storage material and higher than a lower limit of a temperature range in which the article is to be held, so that the latent heat storage material is changed from a liquid phase to a solid phase. Phase change.

This makes it possible to regenerate the latent heat storage material and extend the cooling function in the distribution system using the distribution packaging container using the latent heat storage material having a dormant period.

(10) In addition, in the physical distribution method according to one aspect of the present invention, an article in which a temperature range to be held is defined is packed in the physical distribution packaging container described in (7) above, and the consignee by the consignor from the consignor. And a method of controlling a temperature outside the physical distribution packaging container to a temperature range in which the article is to be held by using a cooling device at least before and after a time period during which the temperature is not controlled. The cooling device cools the physical distribution packaging container in an overlapping range of the temperature range of the dormant period and the temperature range of the article to be held.

Thereby, in the distribution method using the distribution packaging container using the latent heat storage material having a dormant period, the latent heat storage material can be at least dormant, and the cooling function can be extended.

(11) Further, in the physical distribution method according to one aspect of the present invention, an article in which a temperature range to be held is defined is packed in the physical distribution packaging container described in (7) above, and the consignee by the consignor from the consignor. And a method of controlling a temperature outside the physical distribution packaging container to a temperature range in which the article is to be held by using a cooling device at least before and after a time period during which the temperature is not controlled. And the cooling device cools the physical distribution packaging container at a temperature lower than a solidification temperature of the latent heat storage material and higher than a lower limit of a temperature range in which the article is to be held. The material changes phase from liquid phase to solid phase.

This makes it possible to regenerate the latent heat storage material and extend the cooling function in the distribution method using the distribution packaging container using the latent heat storage material having a dormant period.

This international application claims priority based on Japanese Patent Application No. 2017-019962 filed on Feb. 6, 2017. The entire contents of Japanese Patent Application No. 2017-019962 are hereby incorporated by reference. Included in international applications.

DESCRIPTION OF SYMBOLS 100 Cold insulator 110 Cold insulator main body 120 Storage part 130 Thermal storage layer 150 Latent heat storage material 170 Inlet 190 Plug 200 Distribution packing container 210 Distribution packing container main body 220 Cold storage tool holding part 230 Article storage part 240 Storage part 250 Cover part

Claims

A cold insulator that is used in a logistics packaging container and adjusts the temperature of a cold object,
A latent heat storage material having a supercooling characteristic and having a temperature range as a dormancy period between a solidification temperature at which a liquid phase starts to change into a solid phase and a melting start temperature at which the solid phase starts to change into a liquid phase;
A housing portion for housing the latent heat storage material,
In the latent heat storage material, a main melting temperature is included in a temperature range to be held by the cold insulation object according to a temperature range in which the cold insulation object is to be held, and at least the dormant temperature range and the cold insulation object are included. A cold insulator that is selected to have a range that overlaps with the temperature range of the object to be held.
The cold insulator according to claim 1, wherein the latent heat storage material is selected such that the solidification temperature is higher than a lower limit of a temperature range in which the cold object is to be held.
The cold insulator according to claim 1, wherein the latent heat storage material has a temperature range of 1 ° C or more in a dormant period.
The cold insulator according to claim 1, wherein the latent heat storage material uses energy generated by a quasi-clathrate hydrate having an alkyl quaternary salt as a guest.
The cold insulator according to claim 1, wherein the latent heat storage material is nonflammable.
The cold insulator according to claim 1, wherein the melting start temperature of the latent heat storage material is 5 ° C or higher and lower than 10 ° C, and the main melting temperature is higher than 5 ° C and lower than 10 ° C.
A logistics packing container for packing goods,
Logistics packaging container body,
The cold insulator according to any one of claims 1 to 6, which is selected according to a temperature range to be held of an article to be packed,
A cold insulator holding portion that is provided inside the physical distribution packaging container body and holds the cold insulator;
A logistics packaging container provided inside the logistics packaging container main body and comprising an article storage unit for storing articles.
An article in which a temperature range to be held is defined is packed in a logistics packaging container according to claim 7 and delivered from a consignor to a consignee by a carrier,
A cooling device for controlling the temperature outside the physical packaging container to a temperature range in which the article is to be held, at least before and after the time period when the temperature is not controlled,
The physical distribution system in which the cooling device cools the physical distribution packaging container in an overlapping range of the temperature range in the dormant period and the temperature range in which the article is to be held.
An article in which a temperature range to be held is defined is packed in a logistics packaging container according to claim 7 and delivered from a consignor to a consignee by a carrier,
A cooling device for controlling the temperature outside the physical packaging container to a temperature range in which the article is to be held, at least before and after the time period when the temperature is not controlled,
The cooling device cools the physical distribution packaging container at a temperature lower than a solidification temperature of the latent heat storage material and higher than a lower limit of a temperature range in which the article is to be held, so that the latent heat storage material is removed from a liquid phase. A logistics system that changes to a solid phase.
An article in which a temperature range to be held is defined is packed in a logistics packaging container according to claim 7 and delivered from a shipper to a consignee by a carrier,
And at least one of before and after the time period when the temperature is not controlled, using a cooling device to control the temperature outside the physical packaging container to a temperature range in which the article is to be held,
The physical distribution method in which the cooling device cools the physical distribution packaging container in an overlapping range of a temperature range in the dormant period and a temperature range in which the article is to be held.
An article in which a temperature range to be held is defined is packed in a logistics packaging container according to claim 7 and delivered from a shipper to a consignee by a carrier,
And at least one of before and after the time period when the temperature is not controlled, using a cooling device to control the temperature outside the physical packaging container to a temperature range in which the article is to be held,
The cooling device cools the physical distribution packaging container at a temperature lower than a solidification temperature of the latent heat storage material and higher than a lower limit of a temperature range in which the article is to be held, so that the latent heat storage material is removed from a liquid phase. A logistics method that changes to a solid phase.