CN110476029A - Thermal insulation device, cold storage device, distribution packaging container, distribution system, and distribution method - Google Patents

Abstract

One kind is provided by regenerating latent heat storage material in logistics progress, heat preservation or cold insulation function can be made to extend, and temperature change when due to the phase transformation of latent heat storage material is small, it therefore, can be reliably in heat preservation or the insulation utensil or cold insulation utensil of heat preservation or cold insulation within the temperature range of should keeping of cold insulation object.Insulation utensil (100) is to be used in logistics bale packing container, and the insulation utensil that the temperature for carrying out heat preservation object is adjusted, it include: latent heat storage material, the setting temperature for mutually becoming solid phase since liquid phase of the latent heat storage material is with the difference for the thawing start temperature for mutually becoming liquid phase since solid phase less than 1 DEG C, receiving portion (120), for accommodating the latent heat storage material, the latent heat storage material is according to the temperature range that should be kept for keeping the temperature object, it include within the temperature range of should the keeping of object of heat preservation with setting temperature, and the thawing start temperature is selected lower than the mode of the upper limit of the temperature range that should be kept of the heat preservation object.

Description

Thermal insulation device, cold storage device, distribution packaging container, distribution system, and distribution method

technical field

The invention relates to a thermal insulation appliance, a cold insulation appliance, a logistics packaging container, a logistics system and a logistics method using latent heat storage materials.

Background technique

When transporting food, medicine, electronic components, etc., in order to prevent the freshness and quality of these goods from deteriorating, the logistics system and services that are managed at a constant temperature from the sender to the receiver support the current rich life.

In the above-mentioned constant temperature logistics system, the objects to be conveyed are generally packaged in a heat-insulating box for suppressing the inflow and outflow of heat from the ambient temperature and the objects to be conveyed. And when the inflow becomes large, it is necessary to bundle and transport a heat storage material (cool storage material) for absorbing or releasing the heat together.

In addition, in the current constant temperature logistics system, there are few cases of direct transportation from the consignor to the consignee, and there are reasons such as adjusting the intermediary base, checking the transportation schedule, and reclassifying the conveyed goods. Temperature management is also required at intermediary bases, and temporary storage is in refrigerated warehouses, which have electrical heat preservation and cold preservation functions. Furthermore, if the transportation period from the consignor to the intermediary base, etc. takes a long time, it will be transported by a vehicle with an electrical thermal insulation function.

However, in conventional logistics systems, the temperature range of the object to be transported has been considered in consideration of the heat release and heat absorption temperature of the heat storage material and the holding temperature at the intermediate point during the transport period. Take into account the heat storage material and the temperature at intermediate and intermediate points during transportation.

Therefore, during the transportation period and in the intermediary base, the thermal storage material dissipates heat and absorbs heat unnecessarily, and there is a waste of energy. question.

Patent Document 1 discloses a method of shortening the time required for cold storage of a cold storage. In a cold storage including a main body of a cold storage for storing articles and a cold storage for cooling the storage, the cold storage can be freely Putting in and taking out cold storage materials made of fluids with cold storage functions, and installing cold storage material replacement devices at each delivery base.

In Patent Document 2, it is disclosed that as a method that does not use a cold storage vehicle, and can maintain cold storage at a cold storage temperature consisting of a positive temperature required for cold storage delivery, the cold storage material and the cold storage are stored in a cold storage tank. The box is to precool (not freeze) the first cold storage body at a positive temperature, and the heat insulating material and the first cold storage material are arranged between the frozen second cold storage body and the product to be kept cold.

prior art literature

patent documents

Patent Document 1: JP-A-2001-66028

Patent Document 2: JP-A-2005-300052

Contents of the invention

Technical problem to be solved by the present invention

However, in the technique described in Patent Document 1, since it is necessary to replace the cool storage material at each site, and since the cool storage material cannot be transported without passing through a base having a cool storage material replacement device, the transport route is clearly limited. In addition, since it is a fluid cold storage material, the heat energy stored is sensible heat, and the amount of energy as energy is extremely small. Therefore, it must be replaced at each base.

In addition, in the technology described in Patent Document 2, since the cold storage body whose melting temperature is lower than that of the product to be kept cold is used, even if it passes through, for example, a cold storage warehouse, the temperature in the warehouse must be higher than the melting temperature of the cold storage body. The cold storage body promotes melting, and it is only necessary to carry a large amount of cold storage body after long-term distribution. Therefore, the volume of the cold storage products that can be distributed is smaller than the capacity of the packaging container. In addition, the above-mentioned problems are also common in terms of thermal insulation, and there are problems of replacement of the heat storage material in each base and a large amount of heat storage bodies.

One embodiment of the present invention has been made in view of the above-mentioned circumstances, and its object is to provide a system that can prolong the thermal insulation or cold storage function by regenerating the latent heat storage material in the distribution process, and that can be used when the phase change of the latent heat storage material occurs. Therefore, it is a heat-preserving or cold-preserving appliance that can reliably keep warm or cold within the temperature range of the object to be kept warm or cold.

Technical solutions for technical problems

In order to achieve the above object, one embodiment of the present invention adopts the following means. That is, a thermal insulation device according to an embodiment of the present invention is a thermal insulation device used in a distribution packaging container and for adjusting the temperature of an object to be kept warm, and is characterized in that the thermal insulation device includes: a latent heat storage material, the The difference between the solidification temperature at which the latent heat storage material starts to change from the liquid phase to the solid phase and the melting temperature at which the solid phase starts to change to the liquid phase is less than 1°C; the housing part is used to accommodate the latent heat storage material, The latent heat storage material is based on the temperature range to be kept of the heat-retaining object, so that the solidification temperature is included in the temperature range of the heat-retaining object, and the melting start temperature is lower than that of the heat-retaining object. should be chosen in such a way that the upper limit of the temperature range is maintained.

In addition, a cold storage device according to an embodiment of the present invention is a cold storage device used in a distribution packaging container and for adjusting the temperature of an object to be kept cold, wherein the cold storage device includes: a latent heat storage material, the The difference between the solidification temperature at which the latent heat storage material starts to change from the liquid phase to the solid phase and the melting temperature at which the solid phase starts to change to the liquid phase is less than 1°C; the housing part is used to accommodate the latent heat storage material, The latent heat storage material is included in the temperature range of the object to be kept in accordance with the temperature range in which the object to be kept in cold with a main melting temperature, and the solidification temperature is higher than that in the object to be kept in cold. The way to keep the lower limit of the temperature range is chosen.

Beneficial effect

According to one embodiment of the present invention, the object to be kept warm can be kept warm at around the solidification temperature by the latent heat of the latent heat storage material during the time zone when the temperature is not controlled. In addition, since the upper limit of the temperature to be kept of the heat preservation object is higher than the melting start temperature, in the temperature control time zone, by keeping the controlled temperature at a temperature higher than the melting start temperature and lower than the upper limit, it is possible to The latent heat storage material is changed from a solid phase to a liquid phase and can be regenerated.

In addition, according to one embodiment of the present invention, the object to be kept cold can be kept cold by the latent heat of the latent heat storage material near the main melting temperature during the time zone when the temperature is not controlled. In addition, since the lower limit of the temperature to be kept of the object to be kept cold is lower than the solidification temperature, in the time zone of temperature control, by cooling the controlled temperature at a temperature lower than the solidification temperature and higher than the lower limit, the latent heat can be reduced. The thermal storage material changes phase from liquid to solid and can be regenerated.

Description of drawings

Fig. 1 is a cross-sectional view of a heat-retaining device or a cold-retaining device according to a first embodiment or a second embodiment.

FIG. 2 is a conceptual diagram showing an example of a DSC curve and a method of obtaining a melting start temperature and a main melting temperature.

Fig. 3A is a cross-sectional view of the distribution packaging container according to the first embodiment or the second embodiment.

Fig. 3B is a cross-sectional view of the physical distribution packing container according to the first embodiment or the second embodiment.

Fig. 4 is a conceptual diagram showing a usage state of a heat-retaining device or a cold-retaining device and a distribution packaging container according to the first embodiment or the second embodiment.

5A is a conceptual diagram showing a latent heat storage material used in a distribution system according to a third embodiment and a temperature range when the temperature is controlled by a heating device relative to a temperature range to be maintained of an article.

5B is a conceptual diagram showing a latent heat storage material used in the distribution system according to the third embodiment and a temperature range when the temperature is controlled by a cooling device relative to a temperature range to be maintained of an article.

Fig. 5C is a conceptual diagram showing the temperature range of a distribution system using a conventional thermal storage material.

Fig. 6A is a conceptual diagram showing a manufacturing process of the heat-warming device or the cold-warming device according to the first embodiment or the second embodiment.

Fig. 6B is a conceptual diagram showing a manufacturing process of the heat-warming device or the cold-warming device according to the first embodiment or the second embodiment.

Fig. 6C is a conceptual diagram showing a manufacturing process of the heat-insulating device or the cold-insulating device according to the first embodiment or the second embodiment.

FIG. 7 shows a table of examples of latent heat storage materials and examples of articles assumed to be transported using the latent heat storage materials in relation to Examples 2 and 3. FIG.

Detailed ways

Definitions of terms in this application are explained below. Unless otherwise specified, the following definitions are to be interpreted.

(1) The solidification temperature is the temperature at which the latent heat storage material in the liquid state begins to generate crystal nuclei when it is kept at a certain temperature. In the present invention, under the state that at least 50ml of latent heat storage material is put into a polyethylene bottle, it is arranged in a cold storage (including a refrigerator, a freezer, a programmable constant temperature tank), so that the temperature of the cold storage is lowered, and Value measured by thermocouple. When the latent heat storage material in the liquid state is placed at a temperature below the solidification temperature, the latent heat storage material is maintained at a temperature near the solidification temperature during the phase transition of the latent heat storage material 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 from the DSC curve obtained by differential scanning calorimetry (DSC). FIG. 2 is a conceptual diagram showing an example of a DSC curve and a method of obtaining a melting start temperature and a main melting temperature. When the latent heat storage material in a solid state is at a temperature 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). When the latent heat storage material in the solid phase state is at a temperature above the main melting temperature, the phase of the latent heat storage material changes into a liquid phase, and the latent heat storage material maintains a temperature near the main melting temperature.

(4) The temperature range in the regeneration period is the temperature range above the melting start temperature of the latent heat storage material in the heat preservation device. In addition, in the cold storage device, the temperature range of the latent heat storage material is below the solidification temperature.

(5) The regeneration of the latent heat storage material is to change from a solid phase to a liquid phase by placing the latent heat storage material at a temperature above the melting start temperature in a heat preservation device. In addition, in cold storage appliances, the latent heat storage material is changed from a liquid phase to a solid phase by exposing the latent heat storage material to a temperature below the solidification temperature.

The inventors of the present case discovered that, when using a thermal insulation device with a latent heat storage material to adjust the temperature of the thermal insulation object, the solidification temperature at which the phase transition from the liquid phase to the solid phase begins and the melting temperature at which the phase transition from the solid phase to the liquid phase begins The latent heat storage material having a difference in temperature of less than 1° C. has high temperature stability in the process of changing from a liquid phase to a solid phase, and by using this latent heat storage material to control the temperature within a temperature range above the melting start temperature, It is possible to regenerate the latent heat storage material and realize the present invention.

Therefore, the inventors of the present application can use the high temperature stability of the latent heat storage material in the process of changing from the liquid phase to the solid phase, and can keep the thermal insulation object warm with a small temperature change. In addition, by regenerating the latent heat storage material during the logistics process, the thermal insulation function can be extended. Hereinafter, embodiments of the present invention will be specifically described with reference to the drawings. In addition, in the following description, there are descriptions about thermal insulation appliances and cold insulation appliances, but their structures and constituent members are substantially the same, and since there are cases where they can be used as thermal insulation appliances or cold insulation appliances, the same reference numeral 100 is used. express. Therefore, the thermal insulation device 100 is described for the purpose of heat preservation, the thermal insulation device 100 is described for the purpose of cold preservation, and the thermal insulation device (cooling device) 100 is described when it is appropriately changed according to the purpose. The same applies to the heat-retaining device main body and the heat-retaining device holder. In addition, the description of overlapping is omitted.

(first embodiment)

(Construction of thermal insulation device)

The thermal insulation device of the present invention is a thermal insulation device used in a logistics packaging container to adjust the temperature of an object to be kept warm, and includes a latent heat storage material and a housing for storing the latent heat storage material. The difference between the solidification temperature at which the liquid phase starts to change to the solid phase and the melting temperature at which the solid phase starts to change to the liquid phase is less than 1°C. FIG. 1 is a cross-sectional view of a heat-warming device 100 according to the present embodiment. As shown in FIG. 1 , the heat preservation device 100 according to this embodiment has a housing portion 120 which is a hollow region inside the heat preservation device main body 110 , and the housing portion 120 has a heat storage layer 130 .

The heat preservation device main body 110 has a hollow housing portion 120 for housing the heat storage layer 130 . The main body 110 of the thermal insulation device can be formed of resin materials such as polyethylene, polypropylene, polyester, polyurethane, polycarbonate, polyvinyl chloride, and polyamide, metals such as aluminum, stainless steel, copper, and silver, and inorganic materials such as glass, ceramics, and ceramics. . A resin material is preferable from the viewpoint of ease of manufacture of the hollow structure and durability. In addition, it is preferable that when the sealing part of the temperature indicating material indicating the temperature is attached to the heat preservation device main body 110, it can be used to determine the temperature of the heat preservation device.

The heat storage layer 130 includes a latent heat storage material 150, the difference between the solidification temperature of the latent heat storage material 150 from the liquid phase to the solid phase and the melting temperature from the solid phase to the liquid phase is less than 1°C . The latent heat storage material 150 is preferably a material mainly composed of organic molecules, so that the supercooling property is extremely small, and the difference between the solidification temperature and the melting start temperature is less than 1°C. When the latent heat storage material with high supercooling characteristics is changed from a liquid phase to a solid phase, after the temperature of the latent heat storage material drops to the solidification temperature, the heat generated by crystallization rises to around the main melting temperature. Therefore, the temperature of the latent heat storage material varies greatly, and the temperature may deviate from the temperature to be maintained of the object to be kept warm, making it difficult to adjust the temperature. However, in the case of using a latent heat storage material whose difference between the solidification temperature and the melting start temperature is less than 1° C., the temperature change from the liquid phase to the solid phase is extremely small, and the temperature can be maintained near the solidification temperature. Therefore, it is possible to reliably keep the temperature within the temperature range that the heat-retaining object should keep.

As specific examples of latent heat storage materials, straight chain alkanes with 13 to 30 carbon atoms, straight chain alkyl alcohols with 13 to 20 carbon atoms, polyethylene glycol with a molecular weight of 400 to 800, polyethylene glycol with a carbon number of 10 ~14 straight-chain fatty acids. Since these latent heat storage materials have low thermal conductivity and a slow phase transfer rate from liquid phase to solid phase, they can be kept near the solidification temperature for a long time. In addition, these latent heat storage materials accurately determine the solidification temperature and melting start temperature by increasing or decreasing the number of carbon atoms one by one. Therefore, by choosing the right number of carbon atoms, tight temperature management can be achieved. In addition, among the linear alkanes with 13 to 30 carbon atoms, those with 15 to 24 carbon atoms have a high latent heat value, and are suitable for keeping chocolate at a temperature (15 to 18°C) and suitable for keeping rice. Temperature (20-25°C), heat preservation temperature (25-30°C) suitable for precision instruments/components, artworks, temperature (35-37°C) suitable for heat preservation of blood organs has a coagulation temperature, through appropriate selection of direct The number of carbon atoms in paraffins enables tight temperature control.

Since the solidification temperature is determined with high precision by the number of carbon atoms, the solidification temperature of the above materials is graded, however, the solidification temperature can be adjusted by mixing two or more of these materials in any ratio, and can be linear Change the freezing temperature. In addition, as a latent heat storage material containing water molecules, it is generally difficult to use a large amount of supercooling properties, but it can be used as long as the difference between the solidification temperature and the melting start temperature is controlled to be less than 1°C by adding a supercooling inhibitor. In addition, the latent heat storage material according to this embodiment is a material that utilizes the latent heat storage material to transition from a liquid phase to a solid phase, and it is preferable to select a latent heat storage material with an appropriate solidification temperature according to the temperature of the use environment. For example, in consideration of use in cold regions where the temperature is below zero, a latent heat storage material with a freezing temperature above 0° C. is selected to achieve the purpose of heat preservation of the heat preservation object.

In addition, it is preferable to add antiseptics and antibacterial agents to the material forming the thermal storage layer 130 . In addition, thickeners such as xanthan gum, guar gum, carboxymethyl cellulose, hydroxypropyl cellulose, and sodium polyacrylate may also be added to the material forming the thermal storage layer 130 . In addition, the material of this invention is not limited to the material illustrated above.

The latent heat storage material 150 is selected according to the temperature range to be maintained determined for each thermal insulation object. The latent heat storage material 150 is included in the temperature range of the object to be kept in temperature with the solidification temperature of the latent heat storage material 150, and the melting start temperature of the latent heat storage material 150 is lower than the upper limit of the temperature range to be kept in the object to be kept in heat. way to choose. By selecting in this way, in the time zone of temperature control, the controlled temperature can be set to a temperature within the range in which the temperature range of the regeneration period and the temperature range to be kept of the heat preservation object overlap, and the latent heat can be stored. Material 150 changes phase from solid to liquid and can be regenerated. In addition, it is preferable that the latent heat storage material 150 is 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 object to be kept warm is to be kept.

[Construction of logistics packing container]

FIG. 3A is a cross-sectional view of the physical distribution packaging container 200 according to the present embodiment. The logistics packing container 200 includes: the main body of the logistics packing container 210; the heat preservation device holding part 220, which holds the heat preservation device arranged in the main body of the logistics packing container 210; And select; the item storage part 230 is used to store the items set in the logistics package container main body 210 .

The physical distribution container main body 210 is comprised from the accommodating part 240 and the cover part 250. The accommodating part 240 has an opening through which articles and the heat-warming device 100 are put in and out, and the lid part 250 closes the opening. The housing part 240 and the cover part 250 may be connected or separated. In order to reduce the ingress and egress of heat inside the physical distribution packaging container 200 , it is preferable that the lid portion 250 is in close contact with the housing portion 240 .

Preferably, the logistics bundle container main body 210 is formed of heat insulating materials such as foamed styrene, foamed polyurethane, and vacuum heat insulating materials. A heat-insulating layer formed of a material having heat-insulating properties may be provided on the inside and outside of the main body formed of a material that does not consider heat-insulating properties. In addition, the physical distribution container main body 210 may be of a size that can be carried by a person, for example, a huge container such as a shipping container may function as the physical distribution container main body 210 . In addition, a heating structure can also be arranged in the container.

The heat preservation device holding part 220 is provided inside the distribution packaging container main body 210 . The physical distribution package container 200 is used by placing the heat-retaining device 100 on the heat-retaining device holder 220 . Thereby, the inside of the physical distribution packaging container main body 210 is kept at the temperature corresponding to the heat preservation tool 100 . The heat-warming device holder 220 may have a structure capable of fixing the heat-warming device 100 . In addition, the thermal insulation device 100 may also be built in the physical distribution packaging container body 210 , and the thermal insulation device 100 itself may also be the physical distribution packaging container 200 .

The thermal insulation device 100 used for the physical distribution packing container 200 is selected according to the temperature range to be kept of the packed articles. The thermal insulation appliance 100 is selected as the thermal insulation appliance 100 using the latent heat storage material 150, the solidification temperature of the latent heat storage material 150 used by the thermal insulation appliance 100 is included in the temperature range that the article should keep, and the melting start temperature is lower than the object should be. The upper limit of the temperature range maintained. By selecting in this way, in the temperature control time zone in the distribution process, 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 to be kept of the heat preservation object overlap. As a result, the latent heat storage material 150 can be changed from a solid phase to a liquid phase to be regenerated. Thereby, it was confirmed that the heat retention function can be extended.

In addition, when the thermal insulation device 100 selects the configuration of the latent heat storage material 150 having the above-mentioned temperature range, furthermore, general heating devices (heating (heating) vehicles, heating (heating) warehouses) used in logistics usually The set control temperature (set temperature) is preferably selected so as to include the range in which the temperature range in the regeneration period overlaps with the temperature at which the article should be kept. By selecting in this manner, the distribution using the distribution packaging container 200 can be performed in the distribution process using a general temperature-set heating device, and the transportation route can be flexibly set.

The article storage unit 230 is provided inside the distribution packaging container main body 210, and can store articles determined by the temperature range to be kept. Thus, the article is kept at a temperature within the temperature range that should be kept.

As shown in FIG. 3B , the logistics bundle container 200 may also be equipped with a plurality of thermal insulation devices 100 .

[Second Embodiment]

This embodiment relates to the structure of a cold storage device. The inventors of the present case found that when the temperature of the object to be kept cold is adjusted by a cold keeping 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 temperature at which the phase change from the solid phase to the liquid phase begins A latent heat storage material with a difference of less than 1°C, through the high temperature stability in the process of changing from a liquid phase to a solid phase, and by using this latent heat storage material to control the temperature within a temperature range below the solidification temperature , the latent heat storage material can be regenerated, and the present invention can be realized.

Therefore, the inventors of the present case use the high temperature stability of the latent heat storage material in the process of changing from the liquid phase to the solid phase, and when regenerating the latent heat storage material in the liquid state, it is possible to regenerate the latent heat storage material in a state where the temperature change is small. The cold storage object is kept cold. In addition, by regenerating the latent heat storage material during distribution, it is possible to prolong the cold storage function. Hereinafter, embodiments of the present invention will be specifically described with reference to the drawings.

(Construction of cold storage appliance)

The cold storage device of the present invention is a cold storage device used in a logistics packaging container to adjust the temperature of a cold storage object, and includes a latent heat storage material and a storage part for storing the latent heat storage material. The difference between the solidification temperature at which the liquid phase starts to change to the solid phase and the melting temperature at which the solid phase starts to change to the liquid phase is less than 1°C. Since the cooling device and the cooling device body according to the present embodiment have the same configuration as the thermal device and the thermal device body according to the first embodiment, description of overlapping parts will be omitted. The cold insulation device 100 according to the present embodiment has a housing portion 120 which is a hollow region inside the cooling device main body 110 , and the storage portion 120 is provided with a heat storage layer 130 .

The heat storage layer 130 includes a latent heat storage material 150, the difference between the solidification temperature of the latent heat storage material 150 from the liquid phase to the solid phase and the melting temperature from the solid phase to the liquid phase is less than 1°C . The latent heat storage material 150 is preferably a material mainly composed of organic molecules, so that the supercooling property is extremely small, and the difference between the solidification temperature and the melting start temperature is less than 1°C. Specifically, straight chain alkanes with 13 to 30 carbon atoms, straight chain alkyl alcohols with 13 to 20 carbon atoms, polyethylene glycol with a molecular weight of 400 to 800, and straight chain fatty acids with 10 to 14 carbon atoms can be used. . In addition, preferably, due to the high latent heat value of straight-chain alkanes with 14 to 16 carbon atoms, i.e., tetradecane, pentadecane, and hexadecane, they are suitable for preserving vegetable and fruit foods in the freezing temperature zone (2-8°C). The temperature zone (8 to 15° C.) has a main melting temperature or a solidification temperature, and therefore has high usefulness.

In addition, these materials can be mixed in any ratio, and the main melting onset temperature and solidification temperature can be adjusted by mixing. In addition, as a latent heat storage material containing water molecules, it is generally difficult to use a large amount of supercooling properties, but it can be used as long as the difference between the solidification temperature and the melting start temperature is controlled to be less than 1°C by adding a supercooling inhibitor. Since the temperature change of the latent heat storage material of the present invention is small in the process of changing from a liquid phase to a solid phase, even if the latent heat storage material is kept cold by the latent heat storage material, all the latent heat is used up and becomes a liquid state, enabling the latent heat storage When the material is recycled, the temperature change of the object to be kept cold is also reduced. Generally, when regenerating a latent heat storage material having supercooling characteristics from a state where a solid phase and a liquid phase coexist, as long as the temperature is lower than the melting start temperature, since solidification proceeds using the solid phase as a nuclei growth point, Therefore, the temperature change is small. However, in the case of regenerating it from a completely liquid state, as long as the temperature is lowered to the solidification temperature, solidification does not occur, so the temperature change is large. Therefore, when keeping cold and regenerating using a latent heat storage material having supercooling characteristics, the amount of latent heat storage material used for the cold storage period is increased in order not to melt completely. However, in the case of using the latent heat storage material of the present invention, since it can be regenerated with a small temperature change even if it is completely in a liquid state, all the original latent heat is used when keeping cold by the latent heat storage material . As a result, the amount of latent heat storage material accommodated in the physical distribution packaging container can be reduced. In addition, the material of this invention is not limited to the material illustrated above.

The latent heat storage material 150 is selected according to the temperature to be maintained determined for each object to be kept cold. The latent heat storage material 15 includes the main melting temperature of the latent heat storage material 150 within the temperature range that should be kept of the object to be kept cold, and the solidification temperature of the latent heat storage material 150 is higher than the lower limit of the temperature range that the object to be kept cold. way to choose. By selecting in this way, in the time zone for controlling the temperature, the latent heat can be stored by setting the controlled temperature to a temperature within a range in which the temperature range of the regeneration period and the temperature range to be kept of the object to be kept cold overlap. Material 150 changes from a liquid phase to a solid phase and regenerates it. In addition, even if all the latent heat is used up during cold storage and becomes a liquid state, when the latent heat storage material 150 is regenerated, since the object to be kept cold can be kept cold with a small temperature change, the temperature range that should be kept out of the object to be kept cold low risk.

[Construction of logistics packing container]

The physical distribution packaging container 200 according to this embodiment can be used by replacing the thermal insulation device 100 with the cold storage device 100 in the sectional view of the physical distribution packaging container according to the first embodiment shown in FIGS. 3A and 3B . The logistics packing container 200 includes: the main body of the logistics packing container 210; the cold preservation device holding part 220, which holds the cold preservation device arranged in the main body of the logistics packing container 210; And select; the item storage part 230 is used to store the items set in the logistics package container main body 210 .

The distribution package container main body 210 may be of a size that can be carried by a person. For example, a huge container such as a shipping container may also function as the distribution package container main body 210 . In addition, the physical distribution packaging container 200 may be a container provided with a cooling device such as a refrigerated container. A refrigerated container can hold a large amount of goods, and can function as a cold storage while providing power during transportation. Therefore, it is preferable to use it at the import and export where the conveyance of goods requires a long time. Conventional refrigerated containers have the following problems, for example, it is difficult to maintain the temperature of the goods during the power outage period such as customs inspection, and the freshness and quality of the goods deteriorate. However, when a refrigerated container is used as a distribution packaging container according to an aspect of the present invention, the consignor stores the refrigerated appliance 100 and articles of the present invention in the refrigerated container, and the refrigerated appliance 100 of the present invention becomes a regeneration period when power is supplied. The latent heat storage material 150 of the cooling device 100 is active during the period of no power supply, and the temperature of the object can be maintained within the temperature range that should be maintained. Therefore, for example, when out of the temperature range that should be maintained for red wine, chocolate, fruit, etc., it is possible to import and export freshness and quality deterioration items over a longer period of time, and set flexible delivery routes.

The cold storage device 100 used for the physical distribution packing container 200 is selected according to the temperature range to be kept of the packed articles. The cold storage appliance 100 is selected as the cold storage appliance 100 using the latent heat storage material 150, the main melting temperature of the latent heat storage material 150 used by the cold storage appliance 100 is included in the temperature range that the article should be kept, and the latent heat storage material 150 The solidification temperature of the object is higher than the lower limit of the temperature range that the article should be kept. By selecting in this way, in the time zone for temperature control in the distribution process, 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 to be kept of the object to be kept cold overlap. As a result, the latent heat storage material 150 can be regenerated from a liquid phase to a solid phase. Thereby, it was confirmed that the cold storage function can be prolonged. In addition, even if all the latent heat is used up during cold storage and becomes a liquid state, when the latent heat storage material 150 is regenerated, since the object to be kept cold can be kept cold with a small temperature change, the temperature range that should be kept out of the object to be kept cold low risk.

In addition, when the cold storage device 100 selects the configuration of the latent heat storage material 150 having the above-mentioned temperature range, it is further preferable to use a general cooling device (refrigerated (freezing) car, refrigerated (freezing) warehouse, refrigerated ( Freezing (refrigerated) sheds, refrigerated containers, etc.) usually set refrigerated temperature, freezing temperature, etc. Control temperature (set temperature) is included in the mode selection within the range of the temperature range of the regeneration period and the temperature that should be kept in the article. By selecting in this way, the distribution using the distribution packaging container 200 can be performed in the distribution process using the cooling device with a general set temperature, and the transportation route can be flexibly set.

FIG. 4 is a conceptual diagram showing a usage state of the cold storage device 100 and the distribution packaging container 200 according to the present embodiment. As shown in FIG. 4 , the cold storage device 100 and the physical distribution packaging container 200 according to this embodiment are used in a state in which articles and the cold storage device 100 are packed in the physical distribution packaging container 200 . The same applies to the thermal insulation tool 100 and the distribution packaging container 200 according to the first embodiment.

[Third Embodiment]

(The composition of logistics system)

In the distribution system according to this embodiment, when using a latent heat storage material that uses a latent heat storage material that changes from a liquid phase to a solid phase as a heat-retaining device, the temperature range to be kept is determined and the heat-retaining device 100 is packed together. In the logistics bundle container 200, the logistics system in which the carrier is handed over from the consignor to the consignee, the logistics system includes a heating device, and the heating device turns the logistics bundle on at least one side of the time zone when the temperature is not controlled. The temperature of the outside of the container 200 is controlled within the temperature range that the item should be kept, and the heating device is in the same range as the temperature range during the regeneration period of the latent heat storage material 150 used in the heat preservation device 100 and the temperature range that the item should be kept. The logistics bundle container 200 is internally heated.

In addition, in the distribution system according to this embodiment, when using a latent heat storage material that uses a latent heat storage material that changes from a solid phase to a liquid phase as a cold storage device, the temperature range to be kept is determined and the cold storage device 100 is determined. The logistics system in which the bundle is handed over from the consignor to the consignee by the carrier in the logistics bundle container 200, and the logistics system includes a cooling device, and the cooling device is at least one of the front and rear sides of the time zone where the temperature is not controlled. , the external temperature of the logistics package container 200 is controlled within the temperature range that the article should maintain, and the cooling device uses the temperature range during the regeneration period of the latent heat storage material 150 used in the cold storage device 100 and the temperature that the article should maintain The stream bundle container 200 is cooled over a range of repetitions.

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 a heating device relative to the temperature range to be maintained of the article. FIG. 5A shows a case where the main melting temperature of latent heat storage material 150 is included in the temperature range to be kept of the article, and the melting start temperature is lower than the upper limit of the temperature range to be kept of the article. In the situation 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 that the object should maintain, and higher 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 be regenerated, and the heat retention function of the article can be extended.

In addition, when the difference between the solidification temperature and the melting start temperature is large, that is, when the supercooling characteristic is large, when the phase transition from the liquid phase to the solid phase occurs, the temperature of the latent heat storage material drops to the solidification temperature and then rises to the melting temperature. start temperature. Therefore, there is a possibility that the temperature change largely deviates from the temperature range that should be maintained, and it is difficult to utilize the phase transition from the liquid phase to the solid phase. However, as shown in the present invention, when the difference between the solidification temperature and the melting start temperature is less than 1°C, since the temperature change of the latent heat storage material is small, the change from liquid phase to solid phase can be used. Accordingly, when the temperature to be kept of the article is higher than the ambient temperature (outside air temperature), the article can be kept warm.

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 a cooling device relative to the temperature range to be maintained of the article. FIG. 5B shows a case where the main melting temperature of the latent heat storage material 150 is included in the temperature range to be kept and the solidification temperature is higher than the lower limit of the temperature range to be kept. In the situation 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 that the object should keep, and lower than the solidification temperature of the latent heat storage material 150 . By controlling the temperature within such a temperature range, the latent heat storage material 150 can be regenerated, and the cooling function can be prolonged. In addition, even if all the latent heat is used up during cold storage and becomes a liquid state, when the latent heat storage material is regenerated, since the cold storage object can be kept cold with a small temperature change, there is a risk that the temperature of the cold storage object should be kept out of the range. Small.

In addition, since the solidification temperature and the melting start temperature are less than 1°C, the temperature change of the phase change is small, so even when transporting chocolate (the temperature range that should be kept: 15-18°C), strawberries (the temperature range that should be kept: 1-2 °C) and other items such as fruits, which should be kept in a small temperature range, can be reliably kept cold and regenerated. In addition, since the temperature range in which the article should be kept and the temperature range in which the regeneration period is repeated widens, strict temperature control of the cooling device is not required, since even if the upper limit of the temperature range controlled by the cooling device is raised to around the solidification temperature , It will also lead to cost reduction and energy saving of the cooling device.

Of the time and frequency of temperature control by the heating device or the cooling device, only a part may be controlled within the repetition range. Even in this case, when the temperature is controlled within a repeated range, the latent heat storage material 150 can be regenerated, and the heat retention supply or heat retention function can be extended.

Fig. 5C is a conceptual diagram showing the temperature range of a distribution system using a conventional thermal storage material. As shown in Fig. 5C, in the distribution system using the conventional thermal storage material, although considering the temperature range that the thermal storage material can maintain and the control temperature at the intermediary base relative to the temperature range that the article should be maintained, The relationship between the thermal storage material and the control temperature at the mediation point is not considered.

In the above-mentioned logistics system, the latent heat storage material 150 used in the thermal insulation device 100 is selected in such a way that the melting temperature at the beginning of melting is included in the temperature range that the article should be kept, and the melting temperature is lower than the upper limit of the temperature range that the article should be kept. However, when the main melting temperature is also selected to be lower than the upper limit of the temperature range of the article, the thermal insulation device 100 can be used as the cold storage device 100 according to the ambient temperature.

Specifically, you can refer to the following examples. For example, considering that in the temperature zone (15-18°C) suitable for keeping chocolate warm, the solidification temperature of the latent heat storage material 150 is controlled to be 16°C, the melting temperature start temperature is controlled to be 16°C, and the main melting temperature is controlled to be 16°C. For the case of 17°C. At this time, if the ambient temperature is below 15°C, the latent heat storage material 150 can be used as the thermal insulation device 100 in the liquid phase within 16-18°C. On the other hand, if the ambient temperature is above 18°C, the latent heat storage material 150 can be used as the cold storage device 100 in the solid phase within 15°C to 16°C. The heating device and cooling device are also changed according to the purpose.

[manufacturing method of thermal insulation appliance and cold storage appliance]

Next, the manufacturing method of the thermal insulation device (cooling device) 100 which concerns on this embodiment is demonstrated. 6A to 6C are conceptual diagrams showing the manufacturing process of the heat-retaining tool 100 according to this embodiment. First, as shown in FIG. 6A , a thermal insulation device main body (cooling device main body) 110 having a hollow region is prepared. Preferably, the main body 110 of the thermal insulation device 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 single pump is preferable. Figure 6B shows an example using a cylinder pump. As shown in FIG. 6B , the filling hose of the cylinder pump is set at the inlet 170 of the main body 110 of the thermal insulation device, and the water suction hose is set in the container containing the latent heat storage material 150 . Next, the latent heat storage material 150 is sucked by lowering the piston of the cylinder pump, and after the piston is filled with the heat storage material, the latent heat storage material 150 is injected into the thermal insulation device main body 110 by raising the piston.

Thereby, as shown in FIG. 6C , the injection port 170 of the thermal device main body 110 forms a plug 190 . As a method of forming the plug 190, there is a method of sealing it by conventional methods such as ultrasonic welding and heat welding, and a method of using a plug that can be freely opened and closed by hand as a screw plug. In the case of sealing by ultrasonic welding, thermal welding, or the like, a material that does not leak, such as the latent heat storage material 150 , is preferable.

Finally, when used as the thermal insulation device 100, the thermal insulation device is left to stand at an ambient temperature higher than the melting start temperature of the latent heat storage material 150, and is kept in a melted state. On the other hand, when using as the cooling device 100, the cooling device 100 is left still in the temperature environment below the solidification temperature of the latent heat storage material 150, and the latent heat storage material 150 is solidified. Through such a process, the thermal insulation device 100 or the cold storage device 100 of this embodiment is manufactured. In addition, the technical scope of the present invention is not limited to the above-described embodiments, and various changes can be made without departing from the scope of the present invention.

[Example 1]

Example 1 is an example of the distribution system using the thermal insulation device according to the first embodiment. In Example 1, a distribution system is assumed in which a food manufacturer as a consignor transports rice, which should be kept in a temperature range of 20 to 25°C, to a store as a consignee in an environment with an air temperature of 10°C. First, the thermal insulation device using the material mainly composed of heptadecane as the latent heat storage material is packaged in a food manufacturing factory at an ambient temperature of 25°C with rice in a liquid state as shown in Fig. 3A and Fig. 3B. in the logistics bundle container shown. In addition, prepare the blow molding container shown in Figure 6A (material: polyethylene, shape: 180*280*29mm/t (cooling appliance main body), use the liquid that is equipped with the cylinder pump shown in Figure 6B in the blow molding container Filling machine, inject 800g of latent heat storage material, use ultrasonic welding machine, cover the injection port, and seal it by welding.

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 within the temperature range that should be maintained. In addition, when 50ml of the latent heat storage material is put into a polyethylene bottle, and placed in a woven constant temperature bath, when it is lowered to -20°C, the solidification temperature of the latent heat storage material is set as the temperature at which crystals begin to form. core temperature. In addition, the melting start temperature and the main melting temperature were measured by differential scanning calorimetry (device used: DSC8213 manufactured by Rigaku Co., Ltd., measuring temperature range: -30 to 30°C, cooling rate: -5°C/min, heating rate: 5°C/min )Evaluate.

In an environment with a temperature of 10° C., it takes 2 hours to transport the logistics package container to the distribution center by a normal temperature truck. The environment in the distribution center is 25°C, and it takes 1 hour to unpack and sort the goods. In addition, it was confirmed that the latent heat storage material in the logistics packaging container was partially solidified when it arrived at the distribution center, but it returned to a liquid one hour after the end of the distribution, and it was confirmed that it was regenerated from a solid to a liquid. Next, the regenerated thermal insulation device and the sorted rice are packaged in a logistics packaging container and transported to the store in 2 hours. When the package was opened, it was confirmed that the quality of the rice was maintained and that the latent heat storage material of the thermal appliance was partially solid. Therefore, as long as it is the distribution system of the present invention, since it is regenerated during the stay in the distribution center, it is not necessary to replace the thermal insulation device at the distribution center, and it can be transported for a long time. In addition, as long as it is the distribution system of the present invention, the weight of the latent heat storage material mounted can be reduced due to regeneration during the stay in the distribution center.

[Example 2 and Example 3]

FIG. 7 shows an example of a latent heat storage material of a cold storage device according to Examples 2 and 3, and an example of an article assumed to be transported using the heat storage material. In addition, the temperature range of the regeneration period shows the range of the case where it is used as a cold storage device. Selecting appropriate examples of items from latent heat storage materials with various primary melting temperatures such as the examples shown in this table, however, the various items are directly maintained at temperatures within the range of temperatures they are supposed to be maintained, which can be achieved during logistics Transport 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, it is possible to set the temperature range that should be maintained and the range in which the regeneration period is repeated, compared to items such as pharmaceuticals and chocolate that should maintain a narrow temperature, and The cold storage appliance can be used for a long time.

In one embodiment of the present invention, the following configurations can be adopted. That is, (1) The thermal insulation device according to one embodiment of the present invention is a thermal insulation device used in a distribution packing container and performs temperature regulation of a thermal insulation object, and is characterized in that the thermal insulation device includes: a latent heat storage material, The difference between the solidification temperature of the latent heat storage material from the liquid phase to the solid phase and the melting temperature from the solid phase to the liquid phase is less than 1°C; A material in which the latent heat storage material is included in the temperature range to be maintained of the heat-retaining object at a solidification temperature according to the temperature range to be maintained of the heat-retaining object, and the melting start temperature is lower than that of the heat-retaining object The upper limit of the temperature range that should be maintained is chosen in such a way.

Therefore, without controlling the temperature time zone, using the high temperature stability of the latent heat storage material in the process of changing from a liquid phase to a solid phase, the temperature change near the solidification temperature can be small by the latent heat of the latent heat storage material. Keep the object to be kept warm while keeping it warm. In addition, since the upper limit of the temperature of the object to be kept warm should be kept higher than the melting start temperature, in the time zone of temperature control, by heating the controlled temperature at a temperature higher than the melting start temperature and lower than the upper limit, it is possible to Changing the latent heat storage material from a solid phase to a liquid phase can regenerate it and extend the heat preservation function.

(2) In addition, in the cold storage device according to one embodiment of the present invention, the latent heat storage material contains any one of straight-chain alkanes with 13 to 30 carbon atoms or straight-chain alkyl alcohols with 13 to 20 carbon atoms. .

By using such a latent heat storage material, since the thermal conductivity is low, the phase transfer rate from liquid phase to solid phase is slow, so it can be maintained near the solidification temperature for a long time. In addition, tight temperature management can be achieved.

(3) In addition, in the cold storage device according to one 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, since the thermal conductivity is low, the phase transfer rate from liquid phase to solid phase is slow, so it can be maintained near the solidification temperature for a long time. In addition, chocolate, rice, precision instruments/parts, artwork, blood, organs, etc. can be kept warm, and strict temperature management can be realized.

(4) In addition, the logistics packaging container according to an embodiment of the present invention is used for packaging articles, and is characterized in that the logistics packaging container includes: a logistics packaging container main body; The heat preservation device according to any one of the items, which is selected according to the temperature range to be kept of the packaged items; the heat preservation device holding part is arranged inside the main body of the logistics packaging container, and is used to hold the heat preservation device ; The item storage part is arranged inside the main body of the logistics packing container and is used for storing items.

Thereby, a heat-retaining appliance using a latent heat storage material having high temperature stability during a process of changing from a liquid phase to a solid phase can be used in logistics.

(5) In addition, in the logistics system of one embodiment of the present invention, the articles whose temperature range to be maintained is determined are packaged in the logistics packaging container described in (4) above, The logistics system handed over to the consignee is characterized in that the logistics system includes: a heating device, which controls the temperature outside the logistics packaging container at least one of the time zone before and after the temperature is not controlled. Within the temperature range that the item should be maintained, the heating device heats the stream 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 that the item should be maintained A bundle container, the latent heat storage material changes from a solid phase to a liquid phase.

Thereby, in the distribution system using the distribution packaging container using the latent heat storage material, it is possible to keep the articles warm at around the solidification temperature. In addition, the latent heat storage material can be regenerated, and the thermal insulation function can be extended.

(6) In addition, in the logistics method according to one embodiment of the present invention, the articles whose temperature range to be maintained is determined are packaged in the logistics packaging container described in (4) above, and are transferred from the consignor to the goods by the carrier. The logistics method handed over to the consignee is characterized in that the logistics method includes at least one of before and after the time zone in which the temperature is not controlled, and the temperature outside the logistics packaging container is controlled to the temperature of the article by using a heating device. A step within the temperature range that should be maintained, the heating device heats the logistics bundle at a temperature that is higher than the melting start temperature of the latent heat storage material and lower than the upper limit of the temperature range that the article should be maintained In a container, the latent heat storage material changes from a solid phase to a liquid phase.

Accordingly, in the distribution method using the distribution packaging container using the latent heat storage material, it is possible to keep the article warm at around the solidification temperature. In addition, the latent heat storage material can be regenerated, and the thermal insulation function can be extended.

(7) In addition, a cold storage device according to an embodiment of the present invention is a cold storage device used in a distribution packaging container to adjust the temperature of a cold storage object, wherein the cold storage device includes: a latent heat storage material , the difference between the solidification temperature of the latent heat storage material from the liquid phase to the solid phase and the melting temperature from the solid phase to the liquid phase is less than 1°C; the accommodation part is used to accommodate the latent heat storage material The thermal material, the latent heat storage material is included in the temperature range of the object to be kept in accordance with the temperature range in which the object to be kept in cold with a main melting temperature, and the solidification temperature is higher than that in the object to be kept in cold It is selected in such a way that the lower limit of the temperature range that the material should be kept is.

Thereby, during the time zone when the temperature is not controlled, the object to be kept cold can be kept cold by the latent heat of the latent heat storage material near the main melting temperature. In addition, since the lower limit of the temperature of the object to be kept cold should be kept lower than the freezing temperature, in the time zone of temperature control, by setting the controlled temperature to be lower than the solidification temperature of the latent heat storage material and higher than the temperature of the object to be kept cold The lower limit of the maintained temperature range can make the latent heat storage material change from a liquid phase to a solid phase, regenerate it, and prolong the cold preservation function. In addition, using the high temperature stability of the latent heat storage material in the process of changing from the liquid phase to the solid phase, even if all the latent heat is used up during cold storage and becomes a liquid state, when the latent heat storage material is regenerated, the temperature can also be maintained. Keep the object to be kept cold in a state where the change is small.

(8) In addition, in the cold storage device according to one embodiment of the present invention, the latent heat storage material contains any one of straight-chain alkanes with 13 to 30 carbon atoms or straight-chain alkyl alcohols with 13 to 20 carbon atoms. kind.

By using such a latent heat storage material, when the latent heat storage material is regenerated, the object to be kept cold can be kept cold with a small temperature change. In addition, tight temperature management can be achieved.

(9) In addition, in the cold storage device according to one embodiment of the present invention, the latent heat storage material contains a linear alkane having 14 to 16 carbon atoms.

By using this latent heat storage material, it is possible to keep cold in the useful refrigerating temperature zone (2-8°C) and the temperature zone (8-15°C) suitable for preserving fruits and vegetables. In addition, tight temperature management can be achieved.

(10) In addition, the logistics packaging container according to an embodiment of the present invention is a logistics packaging container for packaging articles, wherein the logistics packaging container includes: a logistics packaging container main body; The cold storage device described in any one of (7) to (9), which is selected according to the temperature range to be kept of the packaged articles; the cold storage device holding part is arranged inside the main body of the logistics packaging container , used to keep the cold storage device; the article storage part is arranged inside the main body of the logistics packing container, and is used to store articles.

Thereby, a cold storage device using a latent heat storage material having high temperature stability during a process of changing from a liquid phase to a solid phase can be used in logistics.

(11) In addition, in a logistics system according to an aspect of the present invention, in the logistics system, the articles whose temperature range should be maintained are determined to be packaged in the logistics packaging container described in (10) above, and the goods are shipped from the delivery unit by the carrier. The logistics system in which the person is handed over to the consignee is characterized in that it includes a cooling device, and the cooling device controls the temperature outside the logistics packaging container at least one of the time zone before and after the temperature is not controlled. Within the temperature range that the item should be maintained, the cooling device cools the logistics package 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 that the item should be maintained temperature, the latent heat storage material changes from a liquid phase to a solid phase.

Thereby, in the distribution system using the distribution packaging container using the latent heat storage material, the latent heat storage material can be regenerated and the cold storage function can be prolonged. In addition, even if the latent heat is used up during cold storage and becomes a liquid state, when the latent heat storage material is regenerated, the object to be kept cold can be kept cold with little change in temperature.

(12) In addition, in the logistics method according to an aspect of the present invention, the article in which the temperature range to be maintained is determined is packaged in the logistics packaging container described in the above (10), The logistics system in which the consignor is handed over to the consignee is characterized in that the logistics system includes: at least one side before and after the time zone when the temperature is not controlled, using a cooling device to control the temperature outside the logistics packaging container at A step within the temperature range within which the item should be maintained, wherein the cooling device cools the item at a temperature lower than the solidification temperature of the latent heat storage material and higher than the lower limit of the temperature range within which the item should be maintained. According to the logistics package container, the latent heat storage material changes from a liquid phase to a solid phase.

Accordingly, in the distribution method using the distribution packaging container using the latent heat storage material, the latent heat storage material can be regenerated and the cold storage function can be extended. In addition, even if the latent heat is used up during cold storage and becomes a liquid state, when the latent heat storage material is regenerated, the object to be kept cold can be kept cold with little change in temperature.

In addition, this international application claims priority based on Japanese Patent Application No. 2017-063250 filed on March 28, 2017, and the entire content of Japanese Patent Application No. 2017-063250 will be referred to in this international application.

Explanation of reference signs

100...Hot and cold appliances

110...The main body of the heat preservation appliance, the main body of the cold insulation appliance

120…Containment

130…Heat storage layer

150…Latent heat storage material

170...injection port

190…Bolt

200…Logistics Bale Containers

210...The main body of the logistics package container

220...Holding part for heat preservation appliance, holding part for cold insulation appliance

230…Item Containment

240…Containment

250…Cover

Claims (12)

1. A thermal insulation device, which is used in a logistics packaging container, and is a thermal insulation device for adjusting the temperature of an object to be kept warm, characterized in that the thermal insulation device includes: Latent heat storage material, the difference between the solidification temperature of the latent heat storage material from the liquid phase to the solid phase and the melting temperature from the solid phase to the liquid phase is less than 1 ° C, a housing part for housing the latent heat storage material, The latent heat storage material is included in the temperature range of the heat-retaining object at a solidification temperature according to the temperature range of the heat-retaining object, and the melting start temperature is lower than the temperature of the heat-retaining object. The way to keep the upper limit of the temperature range is chosen. 2. The thermal insulation device according to claim 1, wherein the latent heat storage material contains any one of straight-chain alkanes with 13 to 30 carbon atoms or straight-chain alkyl alcohols with 13 to 20 carbon atoms . 3 . The thermal insulation device according to claim 1 , wherein the latent heat storage material contains straight-chain alkanes with 15-24 carbon atoms. 4 . 4. A logistics packaging container, which is a logistics packaging container for packaging articles, characterized in that, the logistics packaging container comprises: The main body of the logistics package container; The thermal insulation device according to any one of claims 1 to 3, which is selected according to the temperature range to be kept of the bundled articles; The heat preservation device holding part is arranged inside the main body of the logistics packaging container and is used to hold the heat preservation device; The item storage part is arranged inside the main body of the logistics packaging container and is used for storing items. 5. A kind of logistics system, described logistics system is that the temperature range that should keep is determined article is bundled in the logistics packing container described in claim 4, is handed over to consignee from consignor by carrier The logistics system, is characterized in that, described logistics system comprises: a heating device that controls the temperature outside the physical distribution packaging container within a temperature range that should be maintained for the article at least one of before and after the time zone in which the temperature is not controlled, The heating device heats the logistics packaging 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 that the article should be kept. The solid phase changes to the liquid phase. 6. A logistics method, characterized in that, the logistics method is that the temperature range that should be maintained is determined and packed in the logistics packaging container according to claim 4, and is handed over from the consignor by the carrier To the logistics method of the consignee, it is characterized in that, the logistics method comprises At least one of before and after the time zone when the temperature is not controlled, using a heating device to control the temperature outside the logistics packaging container within the temperature range that should be maintained for the article, The heating device heats the logistics packaging 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 that the article should be kept. The solid phase changes to the liquid phase. 7. A cold preservation appliance, which is used in logistics packaging containers and performs temperature regulation of cold preservation objects, characterized in that the cold preservation appliance includes: Latent heat storage material, the difference between the solidification temperature of the latent heat storage material from the liquid phase to the solid phase and the melting temperature from the solid phase to the liquid phase is less than 1 ° C, a housing part for housing the latent heat storage material, The latent heat storage material includes the main melting temperature within the temperature range of the object to be kept according to the temperature range to be kept of the object to be kept cold, and the solidification temperature is higher than the temperature range to be kept of the object to be kept cold. The lower limit of the temperature range is selected by way of. 8. The cold storage appliance according to claim 7, wherein the latent heat storage material contains any one of straight-chain alkanes with 13-30 carbon atoms or straight-chain alkyl alcohols with 13-20 carbon atoms kind. 9 . The cold storage device according to claim 7 , wherein the latent heat storage material contains linear alkanes with 14 to 16 carbon atoms. 10. A logistics packaging container, which is a logistics packaging container for packaging articles, characterized in that, the logistics packaging container comprises: The main body of the logistics package container; The cold insulation device according to any one of claims 7 to 9, which is selected according to the temperature range to be kept of the bundled items; The cooling appliance holding part is arranged inside the main body of the logistics packaging container to hold the cooling appliance; The item storage part is arranged inside the main body of the logistics packaging container and is used for storing items. 11. A logistics system, said logistics system is that the article whose temperature range should be kept is determined is bundled in the logistics bundle container according to claim 10, and is handed over from the consignor to the consignee by the carrier The logistics system, is characterized in that, described logistics system comprises: a cooling device that controls the temperature outside the physical distribution package container to be within the temperature range that the article should be maintained at least one of before and after the time zone in which the temperature is not controlled, The cooling device cools the logistics packaging 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 kept. The liquid phase changes to the solid phase. 12. A logistics method, said logistics method is that the article whose temperature range should be kept is determined is bundled in the logistics bundle container according to claim 10, and is handed over from the consignor to the consignee by the carrier The logistics system, is characterized in that, described logistics system comprises: At least one of before and after the time zone when the temperature is not controlled, using a cooling device to control the temperature outside the physical distribution packaging container within the temperature range that should be maintained for the article, The cooling device cools the logistics packaging 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 kept. The liquid phase changes to the solid phase.