JP6765002B2 - Insulation equipment, cold insulation equipment, distribution packaging container, distribution system and distribution method - Google Patents

Description

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

A logistics system that is consistently controlled at a constant temperature from the shipper to the consignee in order to prevent deterioration of freshness and quality when transporting food, pharmaceuticals, electronic parts, etc. And services support the current affluent life.

In the constant temperature distribution system as described above, the transported object is generally packed in a heat insulating box for suppressing the inflow and outflow of heat between the environmental temperature and the transported object, and the temperature difference from the environmental temperature is large. , A heat storage material (cold storage material) for absorbing or releasing the heat is bundled and transported in case the heat inflow and outflow become large.

In addition, in the current constant temperature distribution system, it is rarely directly transported from the consignor to the consignee, and it goes through an intermediary base for reasons such as adjustment of transportation schedule, inspection, and resorting of consigned items. Temperature control is also required at the brokerage base, and it is temporarily stored in equipment that has an electrical heat and cold insulation function, such as a freezing and refrigerating warehouse. Further, if the transportation period from the shipper to the brokerage base is long, the vehicle is transported by a vehicle having an electric heat and cold insulation function.

However, in conventional logistics systems, the heat dissipation and endothermic temperatures of the heat storage material and the holding temperature during the transportation period and at the intermediary base have been taken into consideration for the temperature range in which the object to be transported is desired to be retained. No consideration was given to the material and the temperature during transportation or at the intermediary base.

Therefore, during the transportation period and at the brokerage base, the heat storage material unnecessarily dissipates heat and absorbs heat, resulting in wasted energy, and it is necessary to increase the amount of heat storage material and replace the heat storage material at the brokerage base. It has become.

In Patent Document 1, in a cold storage provided with a cold storage main body for accommodating articles and a cold storage for cooling the inside of the storage, the cold storage can be freely taken in and out of a cold storage material made of a fluid having a cold storage function, and each can be transported. A technology for shortening the time required for cold storage in a cold storage is disclosed by arranging a cold storage material replacement device at each base.

In Patent Document 2, a cold storage material and a cold insulation product are stored in a cold insulation box as a method of maintaining and delivering a cold insulation product at a cold insulation temperature consisting of a positive temperature required for cold insulation delivery without using a cold insulation vehicle. Disclosed is a technique in which a first cold storage body is precooled (not frozen) at a positive temperature, and a heat insulating material and a first cold storage body are arranged between the frozen second cold storage body and a cold storage required product.

Japanese Unexamined Patent Publication No. 2001-66028 Japanese Unexamined Patent Publication No. 2005-300052

However, in the technique described in Patent Document 1, it is necessary to replace the cold storage material at each base, and the transport cannot be performed without passing through the base having the cold storage material replacement device, so that the transportation route is significantly limited. Moreover, since it is a fluid cold storage material, the heat energy to be stored is sensible heat, and the amount of energy is extremely small. Therefore, replacement at each base is essential.

Further, in the technique described in Patent Document 2, since a cold storage body having a melting temperature at a lower temperature than that of a cold storage product is used, the temperature in the warehouse is the melting temperature of the cold storage body even if it passes through a cold storage. Since the cold storage body has to be made higher and melting is promoted, a large amount of cold storage body must be installed in order to cope with long-term delivery. Therefore, the volume of the cold-required item that can be delivered is smaller than the capacity of the packing container. The above-mentioned problems are also common to heat retention, and there are problems such as replacement of heat storage materials at each base and a large amount of heat storage bodies.

One embodiment of the present invention has been made in view of such circumstances, and by regenerating the latent heat storage material in the process of distribution, the heat retention or cold retention function can be extended, and the phase of the latent heat storage material can be extended. By reducing the temperature change at the time of change, it is an object of the present invention to provide a heat insulating device or a cold insulating device that can surely keep warm or cool within the temperature range in which the heat retaining or cold retaining object should be held.

In order to achieve the above object, one embodiment of the present invention has taken the following measures. That is, the heat insulating device according to the embodiment of the present invention is a heat insulating device used for a distribution packing container and controls the temperature of a heat insulating object, and is from the solidification temperature at which the phase changes from the liquid phase to the solid phase and the solid phase. The latent heat storage material is provided with a latent heat storage material having a difference of less than 1 ° C. from the melting start temperature at which the phase changes to the liquid phase, and an accommodating portion for accommodating the latent heat storage material, and the latent heat storage material retains the heat insulating object. Depending on the temperature range to be held, the solidification temperature is selected to be included in the temperature range to be held of the heat retaining object, and the melting start temperature is selected to be lower than the upper limit of the temperature range to be held of the heat retaining object. It is a thing.

Further, the cold storage device according to the embodiment of the present invention is a cold storage device that is used for a distribution packing container and controls the temperature of an object to be cooled, from the solidification temperature at which the phase changes from the liquid phase to the solid phase and the solid phase. The latent heat storage material is provided with a latent heat storage material having a difference of less than 1 ° C. from the melting start temperature at which the phase changes to the liquid phase, and a storage portion for accommodating the latent heat storage material, and the latent heat storage material retains the object to be cooled. Depending on the temperature range to be kept, the main melting temperature is included in the temperature range to be held of the object to be kept cold, and the solidification temperature is selected to be higher than the lower limit of the temperature range to be held of the object to be kept cold. It is a thing.

According to one embodiment of the present invention, the heat-retaining object can be kept warm in the vicinity of the solidification temperature by the latent heat of the latent heat storage material during the time period when the temperature is not controlled. Further, since the upper limit of the temperature to be held of the heat-retaining object is higher than the melting start temperature, the temperature to be controlled is set to be higher than the melting start temperature and lower than the upper limit in the time zone for controlling the temperature. By keeping the temperature at, the latent heat storage material can be phase-changed from a solid phase to a liquid phase and can be regenerated.

Further, according to one embodiment of the present invention, the object to be kept cold can be kept cold 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. Further, since the lower limit of the temperature to be retained of the object to be kept cold is lower than the solidification temperature, the controlled temperature is cooled at a temperature lower than the solidification temperature and higher than the lower limit in the time zone for controlling the temperature. By doing so, the latent heat storage material can be phase-changed from a liquid phase to a solid phase and can be regenerated.

It is sectional drawing of the heat insulating tool or cold insulation device which concerns on 1st or 2nd Embodiment. It is a conceptual diagram which shows the example of the DSC curve and how to obtain the melting start temperature and the main melting temperature. It is sectional drawing of the physical distribution packing container which concerns on 1st or 2nd Embodiment. It is sectional drawing of the physical distribution packing container which concerns on 1st or 2nd Embodiment. It is a conceptual diagram which shows the use state of the heat insulation device or a cold insulation device, and a distribution packing container which concerns on 1st or 2nd Embodiment. It is a conceptual diagram which showed the latent heat storage material used for the distribution system which concerns on 3rd Embodiment, and the temperature range when the temperature is controlled by the heating apparatus with respect to the temperature range which should hold an article. It is a conceptual diagram which showed the latent heat storage material used for the distribution system which concerns on 3rd Embodiment, and the temperature range when the temperature is controlled by a cooling device with respect to the temperature range which should hold an article. It is a conceptual diagram which showed the temperature range of the distribution system using the conventional heat storage material. It is a conceptual diagram which shows the process of manufacturing the heat-retaining tool or the cold-retaining device which concerns on 1st or 2nd Embodiment. It is a conceptual diagram which shows the process of manufacturing the heat-retaining tool or the cold-retaining device which concerns on 1st or 2nd Embodiment. It is a conceptual diagram which shows the process of manufacturing the heat-retaining tool or the cold-retaining device which concerns on 1st or 2nd Embodiment. It is a table which showed the example of the latent heat storage material which concerns on Examples 2 and 3 and the example of the article which is assumed to be transported using the heat storage material.

The definitions of terms in the present application will be described below. Unless otherwise specified, it shall be construed according to the following definitions.

(1) The solidification temperature is a temperature at which crystal nuclei begin to form when the latent heat storage material in a liquid state is held at a constant temperature. In the present invention, at least 50 ml of latent heat storage material is placed in a cold storage (including a refrigerator, a freezer, and a programmable constant temperature bath) in a plastic bottle, and measured by a thermocouple while lowering the temperature of the cold storage. The value. When the latent heat storage material in the liquid phase state is kept at a temperature equal to or lower than the solidification temperature, the latent heat storage material is maintained at a temperature close to the solidification temperature while the latent heat storage material undergoes a phase change to a solid phase.

(2) The melting start temperature is a temperature obtained by extrapolating the temperature at which the endothermic peak starts to the baseline in the DSC curve obtained by differential scanning calorimetry (DSC). 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 latent heat storage material in the solid phase state is kept at a temperature equal to or higher than the melting start temperature, the latent heat storage material starts melting.

(3) The main melting temperature is the temperature of the endothermic peak in the DSC curve obtained by differential scanning calorimetry (DSC). When the latent heat storage material in the solid phase state is kept at a temperature equal to or higher than the main melting temperature, the latent heat storage material is maintained at a temperature near the main melting temperature while the latent heat storage material undergoes a phase change to the liquid phase.

(4) The temperature range in the regeneration period is a temperature range equal to or higher than the melting start temperature of the latent heat storage material in the heat insulating device. Further, in the cold insulation tool, the temperature range is equal to or lower than the solidification temperature of the latent heat storage material.

(5) Regeneration of the latent heat storage material is a phase change from a solid phase to a liquid phase by keeping the latent heat storage material at a temperature equal to or higher than the melting start temperature in the heat insulating device. Further, in the cold insulation tool, by keeping the latent heat storage material at a temperature equal to or lower than the solidification temperature, the phase changes from the liquid phase to the solid phase.

The present inventors control the temperature of a heat insulating object with a heat insulating device having a latent heat storage material, the solidification temperature at which the phase changes from the liquid phase to the solid phase and the melting start temperature at which the phase changes from the solid phase to the liquid phase. The latent heat storage material having a difference of less than 1 ° C. has high temperature stability in the process of changing the phase from the liquid phase to the solid phase, and the temperature is changed to the melting start temperature by using such a latent heat storage material. We have found that the latent heat storage material can be regenerated by controlling it within the above temperature range, and have reached the present invention.

As a result, the present inventors have made it possible to keep the heat-retaining object warm with a small temperature change by using the high temperature stability in the process of the latent heat storage material changing its phase from the liquid phase to the solid phase. In addition, by regenerating the latent heat storage material in the distribution process, it is possible to extend the heat retention function. Hereinafter, embodiments of the present invention will be specifically described with reference to the drawings. In the following description, there is a description about the heat insulating tool and the cold insulation tool, but since their structures and constituent members are almost the same and may be used as both the heat insulating tool and the cold insulation tool, they have the same number. It is represented by adding 100. Then, when the purpose is to keep warm, it is described as a heat insulating device 100, when it is intended to keep cold, it is described as a cold insulating device 100, and when it is appropriately read according to the purpose, it is described as a heat insulating device (cold device) 100. The same applies to the heat insulating device main body and the heat insulating device holding portion. Also, duplicate description will be omitted.

[First Embodiment]
[Structure of heat insulator]
The heat insulating device of the present invention is used for a distribution packing container and is a heat insulating device that controls the temperature of an object to be heat-retained. A latent heat storage material having a difference of less than 1 ° C. from the starting melting start temperature and an accommodating portion for accommodating the latent heat storage material are provided. FIG. 1 is a cross-sectional view of the heat insulating device 100 according to the present embodiment. As shown in FIG. 1, the heat insulating device 100 according to the present embodiment has an accommodating portion 120 which is a hollow structure region inside the heat insulating device main body 110, and the accommodating portion 120 includes a heat storage layer 130.

The heat insulating device main body 110 has a hollow structure accommodating portion 120 for containing the heat storage layer 130. The heat insulating device main body 110 is formed of a resin material such as polyethylene, polypropylene, polyester, polyurethane, polycarbonate, polyvinyl chloride, or polyamide, a metal such as aluminum, stainless steel, copper, or silver, or an inorganic material such as glass, ceramics, or ceramic. be able to. A resin material is preferable from the viewpoint of ease of forming a hollow structure and durability. Further, it is preferable to attach a sticker of a heat insulating material indicating the temperature to the heat insulating device main body 110 because the temperature of the heat insulating device can be determined.

The heat storage layer 130 includes a latent heat storage material 150 in which the difference between the solidification temperature at which the phase changes from the liquid phase to the solid phase and the melting start temperature at which the phase changes from the solid phase to the liquid phase begins is less than 1 ° C. The material of the latent heat storage material 150 preferably contains organic molecules as a main component, whereby the supercooling characteristics are extremely small, and the difference between the solidification temperature and the melting start temperature is less than 1 ° C. When a latent heat storage material with large supercooling characteristics is phase-changed from a liquid phase to a solid phase, the temperature of the latent heat storage material drops to the solidification temperature and then rises to near the main melting temperature due to the heat generated by crystal formation. To do. Therefore, the temperature change of the latent heat storage material is large, and the temperature of the heat-retaining object may deviate from the temperature to be held, which makes it difficult to control the temperature. However, when a latent heat storage material in which the difference between the solidification temperature and the melting start temperature is less than 1 ° C. is used, the temperature change at the time of phase change from the liquid phase to the solid phase is extremely small, and the temperature is near the solidification temperature. Can be retained. Therefore, the heat can be reliably maintained within the temperature range in which the heat-retaining object should be held.

Specific examples of the material of the latent heat storage material include linear alkanes having 13 to 30 carbon atoms, linear alkyl alcohols having 13 to 20 carbon atoms, polyethylene glycol having a molecular weight of 400 to 800, and linear fatty acids having 10 to 14 carbon atoms. Can be used. Since these latent heat storage materials have low thermal conductivity and a slow phase transition from the liquid phase to the solid phase, they can maintain the vicinity of the solidification temperature for a long time. Further, by increasing or decreasing the number of carbon atoms of these latent heat storage materials one by one, the solidification temperature and the melting start temperature are accurately determined. Therefore, strict temperature control is possible by selecting the correct number of carbon atoms. Among the linear alkanes having 13 to 30 carbon atoms, the linear alkanes having 15 to 24 carbon atoms have a high latent heat value and are in a temperature range suitable for keeping chocolate warm (15 to 18 ° C.) and keeping rice and rice warm. Suitable temperature range (20 to 25 ° C), suitable temperature range for heat retention of precision equipment / parts and fine arts (25 to 30 ° C), suitable temperature range for heat retention of blood and organs (35 to 37 ° C) Strict temperature control is possible by having a solidification temperature and appropriately selecting the carbon number of the linear alkane.

Since the solidification temperature of the above materials is accurately determined by the number of carbon atoms, the solidification temperature is stepwise. However, the solidification temperature can be adjusted by mixing two or more of these materials at an arbitrary ratio, and solidification occurs. The temperature can be changed linearly. In addition, it is generally difficult to use a latent heat storage material containing water molecules because of its large supercooling characteristics, but by adding a supercooling inhibitor, the difference between the solidification temperature and the melting start temperature is reduced to less than 1 ° C. Any controlled material can be used. Further, the latent heat storage material according to the present embodiment utilizes the phase transition of the latent heat storage material from the liquid phase to the solid phase, and the latent heat storage material having an appropriate solidification temperature is selected depending on the environmental temperature used. Is preferable. For example, when considering use in a cold region where the air temperature is below freezing, a latent heat storage material having a solidification temperature of 0 ° C. or higher is selected for the purpose of keeping the heat insulating object warm.

Further, it is preferable that an antiseptic or an antibacterial agent is added to the material forming the heat storage layer 130. Further, a thickener such as xanthan gum, guar gum, carboxymethyl cellulose, hydroxypropyl cellulose or sodium polyacrylate may be added to the material forming the heat storage layer 130. The material 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 maintained, which is determined for each heat insulating object. In the latent heat storage material 150, the solidification temperature of the latent heat storage material 150 is included in the temperature range in which the heat retention object should be held, and the melting start temperature of the latent heat storage material 150 is above the upper limit of the temperature range in which the heat retention object should be held. Selected to be low. 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 a range in which the temperature range in the regeneration period and the temperature range to be held of the heat retention object overlap. The latent heat storage material 150 can be phase-changed from a solid phase to a liquid phase and can be regenerated. Further, the latent heat storage material 150 is preferably selected so that the main melting temperature of the latent heat storage material 150 is lower than the upper limit of the temperature range in which the heat retaining object should be held.

[Structure of logistics packing container]
FIG. 3A is a cross-sectional view of the distribution packing container 200 according to the present embodiment. The distribution packing container 200 is selected according to the distribution packing container main body 210, the heat insulating device holding unit 220 provided inside the distribution packing container main body 210 and holding the heat insulating device, and the temperature range in which the goods to be packed should be held. The heat insulating device 100 is provided, and an article accommodating portion 230 provided inside the distribution packing container main body 210 for accommodating articles is provided.

The distribution packing container main body 210 is composed of a storage portion 240 and a lid portion 250. The accommodating portion 240 has an opening for inserting and removing the article and the heat insulating device 100, and the lid portion 250 closes the opening. The accommodating portion 240 and the lid portion 250 may be connected or separated. In order to reduce the inflow and outflow of heat from the inside of the distribution packing container 200, it is preferable that the lid portion 250 has a structure in close contact with the storage portion 240.

The distribution packing container main body 210 is preferably formed of a heat insulating material such as styrofoam, urethane foam, or a vacuum heat insulating material. A heat insulating layer made of a material having heat insulating properties may be provided inside or outside the main body made of a material not considering heat insulating properties. Further, the distribution packing container main body 210 may have a size that can be carried by a person, or for example, a huge container such as a container may have a function as the distribution packing container main body 210. Further, the container may be provided with a heating mechanism.

The heat insulating device holding portion 220 is provided inside the distribution packing container main body 210. The distribution packing container 200 is used by placing the heat insulating device 100 on the heat insulating device holding unit 220. As a result, the inside of the distribution packing container main body 210 is maintained at a temperature corresponding to the heat insulating device 100. The heat insulating device holding portion 220 may have a structure capable of fixing the heat insulating device 100. Further, the heat insulating device 100 may be built in the distribution packing container main body 210, or the heat insulating device 100 itself may be the distribution packing container 200.

The heat insulating device 100 used in the distribution packing container 200 is selected according to the temperature range in which the goods to be packed are to be held. In the heat insulating device 100, the solidification temperature of the latent heat storage material 150 used in the heat insulating device 100 is included in the temperature range in which the article should be held, and the melting start temperature is lower than the upper limit of the temperature range in which the article should be held. A heat insulating device 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 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 to be maintained of the heat insulating object overlap. Can be done. As a result, the latent heat storage material 150 can be phase-changed from a solid phase to a liquid phase and can be regenerated. As a result, the heat retention function can be extended.

Further, when selecting a heat insulating device 100 using the latent heat storage material 150 having the above temperature range, a general heating device (warming (heat retaining) car, heating (warming (heat retaining) car, heating (warming)) used for physical distribution is further selected. It is preferable that the control temperature (set temperature) normally set in the heat storage) warehouse) is selected so as to be included in a range in which the temperature range in the regeneration period and the temperature range in which the article should be held overlap. By selecting in this way, it is possible to carry out physical distribution using the physical distribution packing container 200 in the physical distribution process using a heating device having a general set temperature, and it is possible to flexibly set the transportation route.

The article storage unit 230 is provided inside the distribution packing container main body 210, and stores articles having a temperature range to be held. This keeps the article in a temperature range that should be held.

As shown in FIG. 3B, a plurality of heat insulating devices 100 may be arranged in the distribution packing container 200.

[Second Embodiment]
The present embodiment relates to a cold insulation device. The present inventors have set the solidification temperature at which the phase changes from the liquid phase to the solid phase and the melting start temperature at which the phase changes from the solid phase to the liquid phase when the temperature of the object to be kept cold is controlled by a cold insulation device having a latent heat storage material. The latent heat storage material having a difference of less than 1 ° C. has high temperature stability in the process of phase change from the liquid phase to the solid phase, and the temperature is kept below the solidification temperature by using such a latent heat storage material. We have found that the latent heat storage material can be regenerated by controlling it within the temperature range of the above, and have reached the present invention.

As a result, the present inventors use the high temperature stability in the process of changing the phase of the latent heat storage material from the liquid phase to the solid phase to regenerate the latent heat storage material in a liquid state. Can be kept cold with a small temperature change. In addition, by regenerating the latent heat storage material in the distribution process, it is possible to extend the cold insulation function. Hereinafter, embodiments of the present invention will be specifically described with reference to the drawings.

[Composition of cold storage device]
The cold insulation tool of the present invention is used for a distribution packing container and is a cold storage device that controls the temperature of an object to be kept cold. A latent heat storage material having a difference of less than 1 ° C. from the starting melting start temperature and an accommodating portion for accommodating the latent heat storage material are provided. Since the cold insulation device and the cold insulation device main body according to the present embodiment have the same configuration as the heat insulation device and the heat insulation device main body according to the first embodiment, the description of the overlapping portion will be omitted. The cold storage device 100 according to the present embodiment has a storage unit 120 which is a hollow structure region inside the cold storage tool main body 110, and the storage unit 120 includes a heat storage layer 130.

The heat storage layer 130 includes a latent heat storage material 150 in which the difference between the solidification temperature at which the phase changes from the liquid phase to the solid phase and the melting start temperature at which the phase changes from the solid phase to the liquid phase begins is less than 1 ° C. The material of the latent heat storage material 150 preferably contains organic molecules as a main component, whereby the supercooling characteristics are extremely small, and the difference between the solidification temperature and the melting start temperature is less than 1 ° C. Specifically, a linear alkane having 13 to 30 carbon atoms, a linear alkyl alcohol having 13 to 20 carbon atoms, polyethylene glycol having a molecular weight of 400 to 800, and a linear fatty acid having 10 to 14 carbon atoms can be used. In addition, tetradecane, pentadecane, and hexadecane, which are linear alkanes having 14 to 16 carbon atoms, have a high latent heat value and are in a chilled temperature range (2 to 8 ° C.) and a temperature range suitable for storing fruits and vegetables (8 to 15 ° C.). It is highly useful and preferable because it has a main melting temperature or solidification temperature.

Further, these materials may be mixed in an arbitrary ratio, and by mixing, it becomes possible to adjust the main melting start temperature and solidification temperature. In addition, it is generally difficult to use a latent heat storage material containing water molecules because of its large supercooling characteristics, but by adding a supercooling inhibitor, the difference between the solidification temperature and the melting start temperature is reduced to less than 1 ° C. Any controlled material can be used. Since the latent heat storage material of the present invention has a small temperature change in the process of changing the phase from the liquid phase to the solid phase, all the latent heat is exhausted during cold insulation by the latent heat storage material, and even if the latent heat storage material becomes liquid, the latent heat storage material is regenerated. The temperature change of the object to be kept cold becomes small. Generally, when a latent heat storage material having supercooling characteristics is regenerated from a state in which a solid phase and a liquid phase coexist, solidification proceeds with the solid phase as a nuclear growth point if the temperature is lower than the melting start temperature. , The temperature change is small. However, when regenerating from a completely liquid state, solidification does not occur unless the temperature is lowered to the solidification temperature, so that the temperature change is large. Therefore, when the latent heat storage material having supercooling characteristics is used for cold insulation and regeneration, the amount is increased more than the amount of the latent heat storage material commensurate with the cold insulation time so as not to completely melt. However, when the latent heat storage material of the present invention is used, even if it is completely in a liquid state, the temperature change can be small and the heat can be regenerated. Therefore, all the original latent heat amount is used when the latent heat storage material keeps cold. be able to. As a result, the amount of latent heat storage material contained in the distribution packing container can be reduced. The material 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 maintained, which is determined for each cold insulation object. In the latent heat storage material 150, the main melting temperature of the latent heat storage material 150 is included in the temperature range in which the cold insulation object should be held, and the solidification temperature of the latent heat storage material 150 is from the lower limit of the temperature range in which the cold insulation object should be held. Selected to be higher. 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 a range in which the temperature range of the regeneration period and the temperature range of the object to be kept cold overlap. The latent heat storage material 150 can be phase-changed from a liquid phase to a solid phase and can be regenerated. Further, even if all the latent heat is exhausted during cold storage and the latent heat storage material 150 is regenerated, the cold storage object can be kept cold in a state where the temperature change is small, so that the cold storage object is retained. There is less risk of deviation from the desired temperature range.

[Structure of logistics packing container]
The distribution packing container 200 according to the present embodiment can be applied by replacing the heat insulating device 100 with the cold insulating tool 100 in the cross-sectional view of the distribution packing container according to the first embodiment shown in FIGS. 3A and 3B. it can. The distribution packing container 200 is provided according to the distribution packing container main body 210, the cold storage device holding portion 220 provided inside the distribution packing container main body 210 and holding the cold storage tool 100, and the temperature range in which the goods to be packed should be held. The selected cold storage device 100 and an article accommodating portion 230 provided inside the distribution packing container main body 210 for accommodating articles are provided.

The distribution packing container main body 210 may have a size that can be carried by a person, or for example, a huge container such as a container may have a function as the distribution packing container main body 210. Further, the distribution packing container 200 may be a container provided with a cooling device such as a reefer container. The reefer container can store a large amount of goods and can function as a cold storage during a period during which power can be supplied during transportation. Therefore, it is preferable to use it for import / export, which requires a long time for transporting 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 there is a problem of deterioration of the freshness and quality of the article. However, when the reefer container is used as the distribution packing container 200 of the present invention, the shipper accommodates the cold storage device 100 of the present invention and the article in the reefer container, so that the cold storage device 100 of the present invention is supplied when power is supplied. Is the regeneration period, and the latent heat storage material 150 of the cold insulation tool 100 is active during the non-power supply period, and the temperature of the article can be maintained in the temperature range in which it should be maintained. Therefore, for example, it is possible to import / export goods whose freshness and quality are significantly deteriorated when they deviate from the temperature range to be maintained, such as wine, chocolate, and fruits, and to set a flexible transportation route. ..

The cooler 100 used in the distribution packing 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 the solidification temperature is higher than the lower limit of the temperature range in which the article should be held. The cold insulation tool 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 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 to be maintained of the object to be kept cold overlap. Can be done. As a result, the latent heat storage material 150 can be phase-changed from a liquid phase to a solid phase and can be regenerated. As a result, the cold insulation function can be extended. Further, even if all the latent heat is exhausted during cold storage and the latent heat storage material 150 is regenerated, the cold storage object can be kept cold in a state where the temperature change is small, so that the cold storage object is retained. There is less risk of deviation from the desired temperature range.

Further, when selecting a refrigerating tool 100 using the latent heat storage material 150 having the above temperature range, a general cooling device (refrigerating (freezing) car, refrigerating (freezing)) used for distribution is further selected. The control temperature (set temperature) such as the refrigerating temperature and freezing temperature normally set in a warehouse, refrigerating (freezing) rocker, reefer container, etc. overlaps with the temperature range during the regeneration period and the temperature range in which the article should be held. It is preferably selected to be included in the range. By selecting in this way, it is possible to carry out the physical distribution using the physical distribution packing container 200 in the physical distribution process using the cooling device having a general set temperature, and it is possible to flexibly set the transportation route.

FIG. 4 is a conceptual diagram showing a usage state of the cold storage device 100 and the distribution packing container 200 according to the present embodiment. As shown in FIG. 4, the cold storage device 100 and the distribution packing container 200 according to the present embodiment are used in a state where the article and the cold storage container 100 are packed in the distribution packing container 200. The same applies to the heat insulating device 100 and the distribution packing container 200 according to the first embodiment.

[Third Embodiment]
[Logistics system configuration]
In the distribution system according to the present embodiment, when a latent heat storage material utilizing a phase change from a liquid phase to a solid phase is used as a heat insulating tool, an article having a defined temperature range to be maintained is a heat insulating tool. A distribution system that is packed together with 100 in a distribution packaging container 200 and delivered from the shipper to the consignee by the carrier, at least before and after a time when the temperature is not controlled, the temperature outside the distribution packaging container 200. A heating device for controlling the temperature range of the article to be held is provided, and the heating device overlaps the temperature range of the latent heat storage material 150 used in the heat insulating device 100 during the regeneration period with the temperature range of the article to be held. Heats the distribution packing container 200 with.

Further, in the distribution system according to the present embodiment, when a latent heat storage material utilizing a phase change from a solid phase to a liquid phase is used as a cold insulation tool, an article in which a temperature range to be maintained is defined. A distribution system that is packed in a distribution packing container 200 together with a cold insulator 100 and delivered from a shipper to a consignee by a carrier, at least before and after a time when temperature is not controlled, outside the distribution packing container 200. A cooling device for controlling the temperature to a temperature range in which the article should be held is provided, and the cooling device has a temperature range of the latent heat storage material 150 used in the cold insulator 100 during the regeneration period and a temperature range in which the article should be held. The distribution packing container 200 is cooled in the overlapping range.

FIG. 5A is a conceptual diagram showing the latent heat storage material 150 used in the distribution system according to the present embodiment and the temperature range when the temperature is controlled by the heating device with respect to the temperature range in which the article should be held. .. FIG. 5A shows the case where the solidification temperature of the latent heat storage material 150 is included in the temperature range in which the article should be held, and the melting start temperature is selected to be lower than the upper limit of the temperature range in which the article should be held. There is. In the case shown in FIG. 5A, the temperature range when the temperature is controlled by the heating device can be lower than the upper limit of the temperature range in which the article should be held and higher than the melting start temperature of the latent heat storage material 150. By controlling the temperature in such a temperature range, the latent heat storage material 150 can be regenerated, and the heat retention function of the article can be extended.

When the difference between the solidification temperature and the melting start temperature is large, that is, when the supercooling characteristic is large, the temperature of the latent heat storage material drops to the solidification temperature when the phase transitions from the liquid phase to the solid phase. Later, the temperature rises to the melting start temperature. Therefore, there is a possibility that the temperature change deviates from the temperature range in which a large temperature change should be maintained, and it is difficult to utilize the phase transition from the liquid phase to the solid phase. However, when the difference between the solidification temperature and the melting start temperature is as small as less than 1 ° C. as in the present invention, the temperature change of the latent heat storage material is small, so that the phase change from the liquid phase to the solid phase can be utilized. It is possible. This makes it possible to keep the article warm when the temperature at which the article should be held is higher than the ambient temperature (outside air temperature).

FIG. 5B is a conceptual diagram showing the latent heat storage material 150 used in the distribution system according to the present embodiment and the temperature range when the temperature is controlled by the cooling device with respect to the temperature range in which the article should be held. .. FIG. 5B shows the case where the main melting temperature of the latent heat storage material 150 is included in the temperature range in which the article should be held, and the solidification temperature is selected to be higher than the lower limit of the temperature range in which the article should be held. There is. 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 to be held by the article and lower than the solidification temperature of the latent heat storage material 150. By controlling the temperature in such a temperature range, the latent heat storage material 150 can be regenerated and the cooling function can be extended. Further, even if all the latent heat is exhausted during cold storage and the latent heat storage material is regenerated, the cold storage object can be kept cold with a small temperature change, so that the cold storage object is retained. There is less risk of deviation from the expected temperature range.

Since the solidification temperature and the melting start temperature are as small as less than 1 ° C and the temperature change of the phase change is small, chocolate (temperature range to be retained: 15-18 ° C) and strawberry (temperature range to be retained: 1 to 1). Even when transporting an article having a narrow temperature range to be maintained, such as a fruit (2 ° C.), it can be reliably cooled and regenerated. In addition, since the temperature range in which the article should be held and the regeneration period overlap is widened, strict temperature control of the cooling device is not required, and the upper limit of the temperature range controlled by the cooling device is the solidification temperature. Since it can be regenerated even if it rises to the vicinity, it leads to cost reduction and energy saving of the cooling device.

Of the time and number of times the temperature is controlled by the heating device or 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 regenerated, and the heat retention function or the cold retention function can be extended.

FIG. 5C is a conceptual diagram showing a temperature range of a 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 brokerage base are taken into consideration 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 intermediary base is not considered.

In the above distribution system, the latent heat storage material 150 used in the heat insulating device 100 is selected so that the melting start temperature is lower than the upper limit of the temperature range in which the article should be held, but the main melting temperature is also held in the article. When selected to be lower than the upper limit of the power temperature range, the heat insulator 100 can also be used as the cold insulator 100 depending on the ambient temperature.

Specifically, the following example can be considered. For example, consider a case where the solidification temperature of the latent heat storage material 150 is controlled to 16 ° C., the melting start temperature is controlled to 16 ° C., and the main melting temperature is controlled to 17 ° C. in a temperature range (15 to 18 ° C.) suitable for keeping chocolate warm. .. At this time, if the environmental temperature is 15 ° C. or lower, the latent heat storage material 150 can be used as the heat insulating tool 100 in a liquid phase at 16 to 18 ° C. On the other hand, when the environmental temperature is 18 ° C. or higher, the latent heat storage material 150 can be solid-phased at 15 to 16 ° C. and used as the cold insulation tool 100. The heating device and cooling device are also changed according to the purpose.

[Manufacturing method of heat insulator and cold insulator]
Next, a method of manufacturing the heat insulating device (cold insulating device) 100 according to the present embodiment will be described. 6A to 6C are conceptual diagrams showing a process of manufacturing the heat insulating device 100 according to the present embodiment. First, a heat insulating device main body (cooling device main body) 110 having a hollow structure region as shown in FIG. 6A is prepared. The heat insulating device main body 110 preferably has an injection port 170 capable of injecting the latent heat storage material 150. Next, the latent heat storage material 150 is injected. The 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 injection port 170 of the heat insulating device 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, the heat storage material is filled in the piston, and then the latent heat storage material 150 is injected into the heat insulating device main body 110 by raising the piston.

Then, as shown in FIG. 6C, a stopper 190 is attached to the injection port 170 of the heat insulating device main body 110. As a method of plugging 190, there are a method of sealing by an existing method such as ultrasonic welding or heat welding, and a method of setting as a screw plug and making it a plug that can be freely opened and closed by hand. When the plug is sealed by ultrasonic welding or heat welding, there is no risk of the latent heat storage material 150 or the like leaking, which is preferable.

Finally, when used as the heat insulating device 100, the heat insulating device is allowed to stand at an environmental temperature equal to or higher than the melting start temperature of the latent heat storage material 150 to keep it in a melted state. On the other hand, when used as the cold insulation tool 100, the cold insulation tool 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 step, the heat insulating tool 100 or the cold insulating tool 100 of this embodiment is manufactured. 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.

[Example 1]
The first embodiment is an example of a physical distribution system using the heat insulating device according to the first embodiment. The first embodiment assumes a distribution system in which a food manufacturer, which is a shipper, transports cooked rice with a temperature range of 20 to 25 ° C. to a store, which is a consignee, in an environment of 10 ° C. ing. First, the shipper puts a heat insulator using a latent heat storage material containing heptadecane as a main component in a liquid state together with cooked rice in a distribution packing container shown in FIGS. 3A and 3B at an environmental temperature of 25 ° C. Packed in a food manufacturing plant. As the heat insulating device, a blow molded container (material: polyethylene, outer shape: 180 * 280 * 29 mm / t (cooling device main body)) as shown in FIG. 6A is prepared, and a cylinder pump as shown in FIG. 6B is prepared in the blow molded container. 800 g of the latent heat storage material was injected using a liquid filling machine equipped with the above, and the injection port was capped and sealed by welding using an ultrasonic welding machine.

At this time, the solidification temperature of the latent heat storage material is 21 ° C., the melting start temperature is 21 ° C., the main melting temperature is 22 ° C., the difference between the solidification temperature and the melting start temperature is less than 1 ° C., and the solidification temperature is maintained. It was within the expected temperature range. The solidification temperature of the latent heat storage material was set to a temperature at which crystal nuclei began to be formed when 50 ml of the latent heat storage material was placed in a programmable constant temperature bath in a plastic bottle and lowered to −20 ° C. The melting start temperature and the main melting temperature are measured by differential scanning calorimetry (device used: DSC8213 manufactured by Rigaku Co., Ltd., measurement temperature range: -30 to 30 ° C., temperature lowering rate: -5 ° C./min, temperature rising rate: 5 ° C./ It was evaluated from min).

This distribution packing container was transported to a distribution center in an environment of a temperature of 10 ° C. by a normal temperature truck for 2 hours. The inside of the distribution center was in an environment of 25 ° C, and the unpacking was carried out for 1 hour. The latent heat storage material in the distribution packing container was partially solidified when it arrived at the distribution center, but it returned to liquid one hour after the end of sorting, and it was regenerated from solid to liquid. confirmed. Next, the regenerated heat insulating device and the separated cooked rice were packed in a distribution packing container and transported to the store over 2 hours. When unpacked, it was confirmed that the quality of cooked rice was maintained, and the latent heat storage material of the heat insulator was partially solid. From this, the distribution system of the present invention is regenerated during the period of stay at the distribution center, so that it is not necessary to replace the heat insulating device at the distribution center, and long-term transportation is possible. Further, in the distribution system of the present invention, the weight of the latent heat storage material to be mounted can be reduced because the distribution system is regenerated during the period of stay at the distribution center.

[Examples 2 and 3]
FIG. 7 shows an example of the latent heat storage material of the cold insulation tool according to Examples 2 and 3 and an example of an article that is expected to be transported using the heat storage material. The temperature range during the regeneration period indicates the range when used as a cold insulator. By selecting the appropriate latent heat storage material with various main melting temperatures, such as the examples shown in this table, various articles can be kept at temperatures in the temperature range to be held during the logistics process. It can be transported without replacing the latent heat storage material. In addition, since the difference between the solidification temperature and the melting start temperature is as small as less than 1 ° C., the temperature range to be maintained and the regeneration period overlap even for articles with a narrow temperature range to be maintained, such as pharmaceuticals and chocolate. Can be provided, and the cold insulation device can be used for a long time.

One embodiment of the present invention can adopt the following configuration. That is, (1) the heat insulating device of the embodiment of the present invention is a heat insulating device used for a distribution packing container and controls the temperature of a heat insulating object, and has a solidification temperature and a solid state at which the phase changes from a liquid phase to a solid phase. The latent heat storage material is provided with a latent heat storage material having a difference of less than 1 ° C. from the melting start temperature at which the phase changes from the phase to the liquid phase, and an accommodating portion for accommodating the latent heat storage material. Depending on the temperature range to be retained, the solidification temperature is included in the temperature range to be retained of the heat-retaining object, and the melting start temperature is lower than the upper limit of the temperature range to be retained of the heat-retaining object. It is the one selected.

As a result, during the time when the temperature is not controlled, the temperature change is small near the solidification temperature due to the latent heat of the latent heat storage material, using the high temperature stability in the process of phase change of the latent heat storage material from the liquid phase to the solid phase. The object to be kept warm can be kept warm in the state. Further, since the upper limit of the temperature at which the heat-retaining object should be held is higher than the melting start temperature, the temperature to be controlled is set to be higher than the melting start temperature and lower than the upper limit in the time zone for controlling the temperature. By heating, the latent heat storage material can be phase-changed from a solid phase to a liquid phase and regenerated, and the heat retention function can be extended.

(2) Further, in the heat insulating device according to the embodiment of the present invention, the latent heat storage material contains either a linear alkane having 13 to 30 carbon atoms or a linear alkyl alcohol having 13 to 20 carbon atoms.

By using such a latent heat storage material, the thermal conductivity is low and the rate of phase transition from the liquid phase to the solid phase is slow, so that the vicinity of the solidification temperature can be maintained for a long time. In addition, strict temperature control becomes possible.

(3) Further, in the heat insulating device according to the embodiment of the present invention, the latent heat storage material contains a linear alkane having 15 to 24 carbon atoms.

By using such a latent heat storage material, the thermal conductivity is low and the rate of phase transition from the liquid phase to the solid phase is slow, so that the vicinity of the solidification temperature can be maintained for a long time. In addition, it is possible to keep warm chocolate, cooked rice, precision equipment / parts, fine arts, blood and organs, etc., and strict temperature control is possible.

(4) Further, the distribution packing container according to the embodiment of the present invention is a distribution packing container for packing goods, and is selected according to the main body of the distribution packing container and the temperature range in which the goods to be packed should be held. Further, the heat insulating device according to any one of (1) to (3) above, a heat insulating device holding portion provided inside the distribution packing container main body and holding the heat insulating tool, and a heat insulating device holding portion provided inside the distribution packing container main body. It is provided with an article storage unit for accommodating articles.

As a result, a heat insulating device using the latent heat storage material having high temperature stability in the process of changing the phase of the latent heat storage material from the liquid phase to the solid phase can be used for physical distribution.

(5) Further, in the distribution system according to the embodiment of the present invention, an article having a temperature range to be held is packed in the distribution packing container described in (4) above, and is received by the carrier from the shipper. A distribution system delivered to a person, comprising a heating device that controls the temperature outside the distribution packing container to a temperature range in which the article should be held, at least before and after a time when the temperature is not controlled. The latent heat storage material is removed from the solid phase by heating the distribution packing container at a temperature higher than the melting start temperature of the latent heat storage material and lower than the upper limit of the temperature range in which the article should be held. The phase changes to a liquid phase.

As a result, in a distribution system using a distribution packing container using a latent heat storage material, the article can be kept warm near the solidification temperature. In addition, the latent heat storage material can be regenerated, and the heat retention function can be extended.

(6) Further, in the distribution method according to the embodiment of the present invention, an article having a temperature range to be held is packed in the distribution packing container described in (4) above, and is received by the carrier from the shipper. A distribution method delivered to a person, at least before and after a time when the temperature is not controlled, a step of controlling the temperature outside the distribution packing container to a temperature range in which the article should be held by using a heating device. By heating the distribution packing container at a temperature higher than the melting start temperature of the latent heat storage material and lower than the upper limit of the temperature range in which the article should be held. The latent heat storage material undergoes a phase change from a solid phase to a liquid phase.

As a result, in the distribution method using the distribution packing container using the latent heat storage material, the article can be kept warm in the vicinity of the solidification temperature. In addition, the latent heat storage material can be regenerated, and the heat retention function can be extended.

(7) Further, the cold storage device according to the embodiment of the present invention is a cold storage device used for a distribution packing container and controls the temperature of a cold storage object, and has a solidification temperature at which a phase change from a liquid phase to a solid phase begins. The latent heat storage material is provided with a latent heat storage material having a difference of less than 1 ° C. from the melting start temperature at which the phase changes from the solid phase to the liquid phase, and an accommodating portion for accommodating the latent heat storage material. Depending on the temperature range to be retained, the main melting temperature is included in the temperature range to be retained of the object to be cooled, and the solidification temperature is higher than the lower limit of the temperature range to be retained of the object to be cooled. Was chosen to be.

As a result, the object to be kept cold can be kept cold 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. Further, since the lower limit of the temperature at which the object to be cooled should be retained is lower than the solidification temperature, the temperature to be controlled is lower than the solidification temperature of the latent heat storage material in the time zone for controlling the temperature, and the object to be cooled is retained. By setting the temperature higher than the lower limit of the power temperature range, the latent heat storage material can be phase-changed from the liquid phase to the solid phase and regenerated, and the cold insulation function can be extended. In addition, by using the high temperature stability in the process of phase change of the latent heat storage material from the liquid phase to the solid phase, even if all the latent heat is exhausted during cold storage and the latent heat storage material becomes liquid, when the latent heat storage material is regenerated, The object to be kept cold can be kept cold with a small temperature change.

(8) Further, in the cold insulation device according to the embodiment of the present invention, the latent heat storage material contains either a linear alkane having 13 to 30 carbon atoms or a linear alkyl alcohol having 13 to 20 carbon atoms.

By using such a latent heat storage material, when the latent heat storage material is regenerated, the object to be cooled can be kept cold in a state where the temperature change is small. In addition, strict temperature control becomes possible.

(9) Further, the cold insulation device according to the embodiment of the present invention contains a linear alkane whose latent heat storage material has 14 to 16 carbon atoms.

By using such a latent heat storage material, it is possible to keep cold in a highly useful chilled temperature range (2 to 8 ° C.) and a temperature range suitable for storing fruits and vegetables (8 to 15 ° C.). In addition, strict temperature control becomes possible.

(10) Further, the distribution packing container according to the embodiment of the present invention is a distribution packing container for packing articles, and is selected according to the main body of the distribution packing container and the temperature range in which the goods to be packed should be held. Further, the cold storage device according to any one of (7) to (9) above, a cold storage device holding portion provided inside the distribution packing container main body and holding the cold storage device, and a cold storage device holding portion provided inside the distribution packing container main body. It is provided with an article storage unit for accommodating articles.

As a result, a cooler using the latent heat storage material having high temperature stability in the process of changing the phase of the latent heat storage material from the liquid phase to the solid phase can be used for physical distribution.

(11) Further, in the distribution system of the embodiment of the present invention, the article in which the temperature range to be held is defined is packed in the distribution packing container described in (10) above, and is received by the carrier from the shipper. A distribution system delivered to a person, comprising a cooling device that controls the temperature outside the distribution packaging container to a temperature range in which the article should be held, at least before and after a time when the temperature is not controlled. When the cooling device cools the distribution packing container 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, the latent heat storage material is solidified from the liquid phase. Phase change.

As a result, in the distribution system using the distribution packing container using the latent heat storage material, the latent heat storage material can be regenerated and the cold insulation function can be extended. Further, even if the latent heat is exhausted during cold storage and the latent heat storage material is regenerated, the cold storage object can be kept cold with a small temperature change.

(12) Further, in the distribution method of the embodiment of the present invention, an article in which a temperature range to be held is defined is packed in the distribution packing container described in (10) above, and is received by the carrier from the shipper. A distribution method delivered to a person, at least before and after a temperature uncontrolled time period, in which a cooling device is used to control the temperature outside the distribution packaging container to a temperature range in which the article should be held. The latent heat is generated by cooling the distribution packing container 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. The heat storage material undergoes a phase change from a liquid phase to a solid phase.

As a result, in the distribution method using the distribution packing container using the latent heat storage material, the latent heat storage material can be regenerated and the cold insulation function can be extended. Further, even if the latent heat is exhausted during cold storage and the latent heat storage material is regenerated, the cold storage object can be kept cold with a small temperature change.

This international application claims priority based on Japanese Patent Application No. 2017-063250 filed on March 28, 2017, and the entire contents of Japanese Patent Application No. 2017-063250 are included in this international application. Incorporate for application.

100 Insulation device, cold insulation device 110 Insulation device main body, cold insulation device main body 120 Storage part 130 Heat storage layer 150 Latent heat storage material 170 Injection port 190 Plug 200 Logistics packing container 210 Logistics packing container main body 220 Heat insulation device holding part, cold storage device holding part 230 Articles Storage part 240 Storage part 250 Lid part

Claims (12)

A logistics system in which goods with a defined temperature range to be held are packed in a logistics packing container and delivered from the shipper to the consignee by the carrier.
A heating device is provided that controls the temperature outside the distribution packing container to a temperature range in which the article should be held, at least before and after the time when the temperature is not controlled.
The distribution packing container is
Logistics packing container body and
A warming device selected according to the temperature range in which the article should be held, and
A heat insulating device holding portion provided inside the distribution packing container body and holding the heat insulating device,
An article storage unit provided inside the distribution packing container body and accommodating the article,
With
The heat insulator
Adjust the temperature of the article,
A latent heat storage material in which the difference between the solidification temperature at which the phase changes from the liquid phase to the solid phase and the melting start temperature at which the phase changes from the solid phase to the liquid phase is less than 1 ° C.
A housing unit for accommodating the latent heat storage material and
With
In the latent heat storage material, the solidification temperature should be included in the temperature range in which the heat retaining object should be held, and the melting start temperature should be held in the article, depending on the temperature range in which the article should be held. It was chosen to be below the upper limit of the temperature range and
The heating device heats the distribution packing container at a temperature higher than the melting start temperature of the latent heat storage material and lower than the upper limit of the temperature range in which the article should be held, without replacing the heat insulating device. A distribution system in which the latent heat storage material undergoes a phase change from a solid phase to a liquid phase. The distribution system according to claim 1, wherein the latent heat storage material contains either a linear alkane having 13 to 30 carbon atoms or a linear alkyl alcohol having 13 to 20 carbon atoms . The distribution system according to claim 1, wherein the latent heat storage material contains a linear alkane having 15 to 24 carbon atoms . A distribution method in which goods with a defined temperature range to be held are packed in a distribution packing container and delivered from the shipper to the consignee by the carrier.
At least before and after the time when the temperature is not controlled, there is a step of controlling the temperature outside the distribution packing container to the temperature range in which the article should be held by using a heating device.
The distribution packing container is
Logistics packing container body and
A warming device selected according to the temperature range in which the article should be held, and
A heat insulating device holding portion provided inside the distribution packing container body and holding the heat insulating device,
An article storage unit provided inside the distribution packing container body and accommodating the article,
With
The heat insulator
Adjust the temperature of the article,
A latent heat storage material in which the difference between the solidification temperature at which the phase changes from the liquid phase to the solid phase and the melting start temperature at which the phase changes from the solid phase to the liquid phase is less than 1 ° C.
A housing unit for accommodating the latent heat storage material and
With
In the latent heat storage material, the solidification temperature should be included in the temperature range in which the heat retaining object should be held, and the melting start temperature should be held in the article, depending on the temperature range in which the article should be held. It was chosen to be below the upper limit of the temperature range and
The heating device heats the distribution packing container at a temperature higher than the melting start temperature of the latent heat storage material and lower than the upper limit of the temperature range in which the article should be held, without replacing the heat insulating device. A distribution method in which the latent heat storage material undergoes a phase change from a solid phase to a liquid phase. The distribution method according to claim 4, wherein the latent heat storage material contains either a linear alkane having 13 to 30 carbon atoms or a linear alkyl alcohol having 13 to 20 carbon atoms . The distribution method according to claim 4, wherein the latent heat storage material contains a linear alkane having 15 to 24 carbon atoms . A logistics system in which goods with a defined temperature range to be held are packed in a logistics packing container and delivered from the shipper to the consignee by the carrier.
A cooling device for controlling the temperature outside the distribution packing container to a temperature range in which the article should be held is provided, at least before and after the time when the temperature is not controlled.
The distribution packing container is
Logistics packing container body and
A cold insulator selected according to the temperature range in which the article should be held, and
A cold storage device holding unit provided inside the distribution packing container body and holding the cold storage device,
An article storage unit provided inside the distribution packing container body and accommodating the article,
With
The cold storage device
Adjust the temperature of the article
A latent heat storage material in which the difference between the solidification temperature at which the phase changes from the liquid phase to the solid phase and the melting start temperature at which the phase changes from the solid phase to the liquid phase is less than 1 ° C.
A housing unit for accommodating the latent heat storage material and
With
In the latent heat storage material, the main melting temperature is included in the temperature range in which the article should be held, and the solidification temperature is in the temperature range in which the article should be held, depending on the temperature range in which the article should be held. It was chosen to be higher than the lower limit and
The cooling device cools the distribution packing container 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, without replacing the cold insulator. A distribution system in which the latent heat storage material undergoes a phase change from a liquid phase to a solid phase. The distribution system according to claim 7, wherein the latent heat storage material contains either a linear alkane having 13 to 30 carbon atoms or a linear alkyl alcohol having 13 to 20 carbon atoms . The distribution system according to claim 7, wherein the latent heat storage material contains a linear alkane having 15 to 24 carbon atoms . A distribution method in which goods with a defined temperature range to be held are packed in a distribution packing container and delivered from the shipper to the consignee by the carrier.
At least before and after the time when the temperature is not controlled, there is a step of controlling the temperature outside the distribution packing container to the temperature range in which the article should be held by using a cooling device.
The distribution packing container is
Logistics packing container body and
A cold insulator selected according to the temperature range in which the article should be held, and
A cold storage device holding unit provided inside the distribution packing container body and holding the cold storage device,
An article storage unit provided inside the distribution packing container body and accommodating the article,
With
The cold storage device
Used for the distribution packing container, the temperature of the article is controlled,
A latent heat storage material in which the difference between the solidification temperature at which the phase changes from the liquid phase to the solid phase and the melting start temperature at which the phase changes from the solid phase to the liquid phase is less than 1 ° C.
A housing unit for accommodating the latent heat storage material and
With
In the latent heat storage material, the main melting temperature is included in the temperature range in which the article should be held, and the solidification temperature is in the temperature range in which the article should be held, depending on the temperature range in which the article should be held. It was chosen to be higher than the lower limit and
The cooling device cools the distribution packing container 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, without replacing the cold insulator. A distribution method in which the latent heat storage material undergoes a phase change from a liquid phase to a solid phase. The distribution method according to claim 10, wherein the latent heat storage material contains either a linear alkane having 13 to 30 carbon atoms or a linear alkyl alcohol having 13 to 20 carbon atoms . The distribution method according to claim 10, wherein the latent heat storage material contains a linear alkane having 15 to 24 carbon atoms .

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