CN110476029B

CN110476029B - Logistics system and logistics method

Info

Publication number: CN110476029B
Application number: CN201880022573.0A
Authority: CN
Inventors: 香村胜一; 黄辉心; 势造恭平; 内海夕香
Original assignee: Sharp Corp
Current assignee: Sharp Corp
Priority date: 2017-03-28
Filing date: 2018-03-26
Publication date: 2021-04-20
Anticipated expiration: 2038-03-26
Also published as: WO2018181096A1; JP6765002B2; JPWO2018181096A1; CN110476029A; US20210107720A1

Abstract

Provided are a distribution system and a distribution method, which can prolong the heat-retaining or cold-retaining function by regenerating a latent heat storage material during distribution, and which can reliably retain heat or cold within a temperature range to be retained in the object to be retained because the temperature change at the time of phase change of the latent heat storage material is small. The logistics system comprises: and a heating device that controls the temperature outside the physical distribution bale container to be within a temperature range to be maintained for the articles, at least one of before and after a time zone in which the temperature is not controlled, wherein the heating device heats the physical distribution bale container at a temperature higher than a melting start temperature of the latent heat storage material and lower than an upper limit of the temperature range to be maintained for the articles, and the latent heat storage material changes phase from a solid phase to a liquid phase.

Description

Logistics system and logistics method

Technical Field

The invention relates to a logistics system and a logistics method using a latent heat storage material.

Background

In order to prevent deterioration in freshness and quality of foods, medicines, electronic components, and the like when they are transported, a logistics system and services that are managed at a constant temperature from a sender to a receiver support a current rich life.

In the above-described constant-temperature distribution system, generally, the transported material is packed in a heat-insulating box for suppressing inflow and outflow of the ambient temperature and the heat of the transported material, and when the temperature difference between the prepared material and the ambient temperature is large and the outflow and inflow of the heat are large, it is necessary to bind and transport the heat-storing material (cold-storage material) for absorbing or releasing the heat together.

In the current constant-temperature distribution system, direct transportation from a sender to a receiver is rarely performed, and there are few reasons for adjusting, checking, and reclassifying objects via an intermediary site. Temperature management is also required at intermediate sites, and the heat-storage medium is temporarily stored in an apparatus having an electric heat-and cold-keeping function such as a freezer-refrigerator. Further, even when a long time is required for the transportation period from the sender to the intermediate site, the transportation is performed by a vehicle having an electric heat-and-cold-keeping function.

However, in the conventional logistics system, the temperature range to be maintained by the transported object is considered to be the temperature of the heat storage material for heat release and heat absorption and the temperature to be maintained at the intermediate data point during the transportation period, but is not considered to be the temperature at the intermediate data point during the heat storage material and the transportation period.

Therefore, during the transportation period and at the intermediate site, the heat storage material unnecessarily dissipates heat and absorbs heat, which wastes energy, and the amount of the heat storage material needs to be increased and the heat storage material at the intermediate site needs to be replaced, which causes a problem of cost reduction.

Patent document 1 discloses a cold storage system including a cold storage main body for storing articles and a cold storage device for cooling the inside of the cold storage, in which a cold storage material made of a fluid having a cold storage function can be freely put in and taken out, and a cold storage material replacement device is disposed at each delivery site.

Patent document 2 discloses a technique of storing a cold storage material and a product to be cooled in a cold storage box, precooling (not freezing) a first cold storage body at a positive temperature, and disposing a heat insulating material and the first cold storage material between a frozen second cold storage body and the product to be cooled, as a method of enabling the product to be delivered while maintaining the product to be cooled at a cold storage temperature consisting of a positive temperature required at the time of cold storage delivery without using a cold storage vehicle.

Documents of the prior art

Patent document

Patent document 1: japanese laid-open patent publication No. 2001-66028

Patent document 2: japanese unexamined patent publication No. 2005-300052

Disclosure of Invention

Technical problem to be solved by the invention

However, in the technique described in patent document 1, since the cold storage material needs to be replaced at each site, and the cold storage material cannot be transported without passing through the site having the cold storage material replacement device, the transport route is significantly limited. Further, since the cold storage material is a fluid, the stored thermal energy is sensible heat, and the amount of energy is extremely small. Therefore, it must be replaced at each site.

In addition, in the technique described in patent document 2, since the cold storage body whose melting temperature is lower than that of the material to be kept cold is used, even if the material passes through a warehouse to be kept cold, for example, the temperature in the warehouse must be higher than the melting temperature of the cold storage body, and since the cold storage body promotes melting, only a large number of cold storage bodies are mounted in order to be distributed over a long period of time. Therefore, the volume of the heat-insulating product to be distributed is small compared to the volume of the packaging container. Further, the above-mentioned problems are common in heat preservation, and there are problems that the heat storage material is replaced and the amount of the heat storage body is large in each site.

An embodiment of the present invention has been made in view of the above circumstances, and an object thereof is to provide a thermal insulating device or a cold insulating device which can prolong a thermal insulating or cold insulating function by regenerating a latent heat storage material during a material distribution process, and which can reliably perform thermal insulation or cold insulation within a temperature range to be maintained for an object to be thermally insulated or cold insulated because a temperature change at the time of phase change of the latent heat storage material is small.

Technical solution for solving technical problem

In order to achieve the above object, one embodiment of the present invention adopts the following means. That is, a heat-insulating device according to an embodiment of the present invention is a heat-insulating device for adjusting a temperature of an object to be heat-insulated, the heat-insulating device being used in a logistics packaging container, the heat-insulating device including: a latent heat storage material having a difference between a solidification temperature at which a phase change from a liquid phase to a solid phase is started and a melting start temperature at which a phase change from the solid phase to the liquid phase is started, which is less than 1 ℃; and a storage unit for storing the latent heat storage material, wherein the latent heat storage material is selected such that a solidification temperature is included in a temperature range to be maintained of the object to be kept warm, and the melting start temperature is lower than an upper limit of the temperature range to be maintained of the object to be kept warm, in accordance with the temperature range to be maintained of the object to be kept warm.

A cooling apparatus according to an embodiment of the present invention is a cooling apparatus for adjusting a temperature of a cooling target object used in a logistics packaging container, the cooling apparatus including: a latent heat storage material having a difference between a solidification temperature at which a phase change from a liquid phase to a solid phase is started and a melting start temperature at which a phase change from the solid phase to the liquid phase is started, which is less than 1 ℃; and a storage unit for storing the latent heat storage material, wherein the latent heat storage material is selected such that a main melting temperature is included in a temperature range to be maintained of the object to be cooled, and the freezing temperature is higher than a lower limit of the temperature range to be maintained of the object to be cooled, in accordance with the temperature range to be maintained of the object to be cooled.

Advantageous effects

According to an embodiment of the present invention, the object to be insulated can be insulated at a temperature near the solidification temperature by latent heat of the latent heat storage material in a time zone where the temperature is not controlled. Further, since the upper limit of the temperature to be maintained of the object to be heat-preserved is higher than the melting start temperature, the latent heat storage material can be changed from the solid phase to the liquid phase and regenerated by maintaining the controlled temperature at a temperature higher than the melting start temperature and lower than the upper limit in the time zone of the controlled temperature.

Further, according to an embodiment of the present invention, in a time zone where the temperature is not controlled, the cooling target object can be cooled at around the main melting temperature by the latent heat of the latent heat storage material. Further, since the lower limit of the temperature to be maintained of the object to be cooled is lower than the solidification temperature, the latent heat storage material can be changed from the liquid phase to the solid phase and can be regenerated by cooling the object to be cooled at a temperature lower than the solidification temperature and higher than the lower limit in the time zone of the control temperature.

Drawings

Fig. 1 is a sectional view of a heat retention device or a cold retention 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 acquiring a melting start temperature and a main melting temperature.

Fig. 3A is a sectional view of the logistics bale container according to the first embodiment or the second embodiment.

Fig. 3B is a sectional view of the logistics bale container according to the first embodiment or the second embodiment.

Fig. 4 is a conceptual diagram illustrating a state of use of the heat insulating device or the cold insulating device according to the first embodiment or the second embodiment and the physical distribution bale container.

Fig. 5A is a conceptual diagram illustrating a latent heat storage material used in the logistics system according to the third embodiment and a temperature range when the temperature is controlled by the heating device with respect to a temperature range to be maintained for an article.

Fig. 5B is a conceptual diagram illustrating the latent heat storage material used in the logistics system according to the third embodiment and the temperature range when the temperature is controlled by the cooling device with respect to the temperature range to be maintained for the articles.

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

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

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

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

Fig. 7 is a table showing examples of the latent heat storage material and examples of articles assumed to be transported using the latent heat storage material in examples 2 and 3.

Detailed Description

The definitions of terms in this application are explained below. Unless otherwise specified, are explained by the following definitions.

(1) The solidification temperature is a temperature at which the latent heat storage material in a liquid state starts to generate crystal nuclei while being maintained at a certain temperature. In the present invention, at least 50ml of the latent heat storage material was placed in a thermal storage container (including a refrigerator, a freezer, and a programmable thermostatic bath) in a state where the material was placed in a polyethylene bottle, and the temperature of the thermal storage container was lowered, and the value was measured by a thermocouple. When the latent heat storage material in the liquid phase 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 the solid phase.

(2) The melting start temperature is a temperature obtained by extrapolating a temperature from the onset of an endothermic peak to a baseline in a Differential Scanning Calorimetry (DSC) curve obtained by DSC. Fig. 2 is a conceptual diagram showing an example of a DSC curve and a method of acquiring a melting start temperature and a main melting temperature. When the latent heat storage material in the solid phase state is at a temperature equal to or higher than the melting start temperature, the latent heat storage material starts to melt.

(3) The main melting temperature is the temperature of the endothermic peak in a Differential Scanning Calorimetry (DSC) curve obtained by DSC. When the latent heat storage material in the solid phase state is at a temperature equal to or higher than the main melting temperature, the phase of the latent heat storage material is changed to a liquid phase, and the latent heat storage material is maintained at a temperature near the main melting temperature.

(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 retaining device. In the cold insulation device, the latent heat storage material is in a temperature range of the solidification temperature or lower.

(5) The latent heat storage material is regenerated by bringing the latent heat storage material to a temperature equal to or higher than the melting start temperature in the heat insulating device, thereby changing the phase from the solid phase to the liquid phase. In the cold insulation device, the latent heat storage material is brought to a temperature equal to or lower than the solidification temperature, whereby the latent heat storage material is changed from a liquid phase to a solid phase.

The present inventors have found that when the temperature of an object to be insulated is adjusted by using an insulating device having a latent heat storage material, the temperature stability in the process of changing the latent heat storage material from a liquid phase to a solid phase in which the difference between the solidification temperature at which the phase changes from a liquid phase to a solid phase and the melting start temperature at which the phase changes from a solid phase to a liquid phase is less than 1 ℃ is high, and that the latent heat storage material can be regenerated by controlling the temperature within a temperature range of not less than the melting start temperature using the latent heat storage material, and have achieved the present invention.

Thus, the present inventors have made use of the high temperature stability of the latent heat storage material in the process of changing from a liquid phase to a solid phase, and have been able to keep the temperature of the object to be kept warm with little change in temperature. In addition, the heat retention function can be prolonged by regenerating the latent heat storage material during the logistics. Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In the following description, although the heat retention device and the cooling device are described, the structures and the constituent members thereof are substantially the same, and the heat retention device and the cooling device may be used as a heat retention device or a cooling device, and therefore, the same reference numeral 100 is given. Accordingly, the heat retention device 100 is described for the purpose of heat retention, the cold retention device 100 is described for the purpose of cold retention, and the heat retention device (cold retention device) 100 is described when appropriately changed according to the purpose. The same applies to the thermal insulation device main body and the thermal insulation device holding portion. Note that overlapping description is omitted.

(first embodiment)

(construction of thermal insulation apparatus)

The heat-insulating device of the present invention is a heat-insulating device for adjusting the temperature of an object to be heat-insulated, which is used for a logistics packaging container, and comprises a latent heat storage material and a storage unit for storing the latent heat storage material, wherein the difference between the solidification temperature at which the phase of the latent heat storage material starts to change from a liquid phase to a solid phase and the melting start temperature at which the phase of the latent heat storage material starts to change from the solid phase to the liquid phase is less than 1 ℃. Fig. 1 is a sectional view of a thermal insulation device 100 according to the present embodiment. As shown in fig. 1, the thermal insulating device 100 according to the present embodiment includes a housing portion 120, the housing portion 120 is a hollow region inside the thermal insulating device body 110, and the housing portion 120 includes a heat storage layer 130.

The heat insulating device body 110 has a hollow housing section 120 for housing the heat storage layer 130. The thermal insulating device body 110 may be made of resin material such as polyethylene, polypropylene, polyester, polyurethane, polycarbonate, polyvinyl chloride, and polyamide, metal such as aluminum, stainless steel, copper, and silver, and inorganic material such as glass, ceramics, and ceramics. From the viewpoint of ease of manufacturing the hollow structure and durability, a resin material is preferable. It is preferable that the temperature of the thermal insulating device can be determined when a sealing portion of a temperature indicating material indicating the temperature is attached to the thermal insulating device main body 110.

The heat storage layer 130 includes a latent heat storage material 150, and a difference between a solidification temperature at which a phase change from a liquid phase to a solid phase of the latent heat storage material 150 and a melting start temperature at which the phase change from the solid phase to the liquid phase is less than 1 ℃. The material of the latent heat storage material 150 is preferably a material containing organic molecules as a main component, and thus has extremely low supercooling property and a difference between the solidification temperature and the melting start temperature of less than 1 ℃. When the latent heat storage material having a large supercooling property is changed from a liquid phase to a solid phase, the temperature of the latent heat storage material is lowered to the solidification temperature, and then the temperature is raised to the vicinity of the main melting temperature by heat generated by crystallization. Therefore, the latent heat storage material has a large temperature change, and the temperature may deviate from the temperature to be maintained of the object to be kept warm, and it is difficult to adjust the temperature. However, in the case of using a latent heat storage material in which the difference between the solidification temperature and the melting start temperature is less than 1 ℃, the temperature change at the time of phase transition from the liquid phase to the solid phase is extremely small, and the temperature can be kept in the vicinity of the solidification temperature. Therefore, the temperature of the object to be insulated can be reliably maintained within the temperature range to be maintained.

Specific examples 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 glycols having a molecular weight of 400 to 800, and linear fatty acids having 10 to 14 carbon atoms. These latent heat storage materials have low thermal conductivity and therefore have a low phase transition rate from a liquid phase to a solid phase, and therefore can be maintained at a temperature near the solidification temperature for a long time. Further, these latent heat storage materials accurately determine the solidification temperature and the melting start temperature by increasing or decreasing the number of carbon atoms one by one. Therefore, by selecting the number of carbon atoms correctly, strict temperature control can be achieved. Further, among the linear paraffins having 13 to 30 carbon atoms, the linear paraffins having 15 to 24 carbon atoms have a high latent heat value, and have a solidification temperature at a temperature suitable for chocolate heat preservation (15 to 18 ℃), a heat preservation temperature suitable for rice (20 to 25 ℃), a heat preservation temperature suitable for precision instruments/parts and art (25 to 30 ℃), and a temperature suitable for blood organ heat preservation (35 to 37 ℃), and by appropriately selecting the number of carbon atoms of the linear paraffins, it is possible to realize a strict temperature control.

The solidification temperature is determined with high accuracy by the number of carbon atoms, and therefore, the solidification temperature of the above-described materials is graded, but the solidification temperature can be adjusted by mixing two or more of these materials at an arbitrary ratio, and the solidification temperature can be linearly changed. In addition, as a latent heat storage material containing water molecules, it is generally difficult to use a large amount of supercooling property, but it is possible to use a latent heat storage material in which the difference between the solidification temperature and the melting start temperature is controlled to less than 1 ℃ by adding a supercooling inhibitor. The latent heat storage material according to the present embodiment is a material that utilizes the phase transition of the latent heat storage material from a liquid phase to a solid phase, and is preferably selected to have an appropriate solidification temperature according to the temperature of the environment in which it is used. For example, in consideration of use in a cold region where the air temperature is below zero, a latent heat storage material having a solidification temperature of 0 ℃ or higher is selected for the purpose of keeping the object to be kept warm.

Further, it is preferable to add a preservative or an antibacterial agent to the material forming the heat storage layer 130. Further, a thickener such as xanthan gum, guar gum, carboxymethyl cellulose, hydroxypropyl cellulose, and 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 above-described exemplary materials.

The latent heat storage material 150 is selected according to the temperature range to be maintained, which is determined for each object to be heat-preserved. The latent heat storage material 150 is selected such that the solidification temperature of the latent heat storage material 150 is included in the temperature range to be maintained in the object to be insulated, and the melting start temperature of the latent heat storage material 150 is lower than the upper limit of the temperature range to be maintained in the object to be insulated. By selecting the temperature range, the temperature to be controlled can be set to a temperature in a range in which the temperature range in the regeneration period and the temperature range to be maintained of the object to be kept overlap in the time zone in which the temperature is controlled, and the latent heat storage material 150 can be changed from the solid phase to the liquid phase and 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 to be maintained for the object to be kept warm.

[ constitution of physical distribution packaging Container ]

Fig. 3A is a sectional view of the physical distribution bale container 200 according to the present embodiment. The logistics bale container 200 includes: the physical distribution bale container body 210; a thermal insulation instrument holder 220 for holding a thermal insulation instrument provided in the physical distribution bale container body 210; a heat retaining tool 100 selected according to a temperature range to be retained for the packed articles; the article storage unit 230 stores articles provided inside the physical distribution packaging container body 210.

The physical distribution packaging container main body 210 is composed of a housing portion 240 and a lid portion 250. The housing portion 240 has an opening portion for receiving and releasing the article and the thermal insulating device 100, and the cover portion 250 closes the opening portion. The receiving portion 240 and the lid portion 250 may be connected or separated. In order to reduce the heat input and output from the inside of the physical distribution bale container 200, the lid portion 250 is preferably in close contact with the receiving portion 240.

Preferably, the physical distribution bale container main body 210 is formed of heat insulating material such as foamed styrene, foamed polyurethane, vacuum heat insulating material, or the like. The heat insulating layer may be formed of a material having heat insulating properties on the inner side and the outer side of the main body formed of a material having no consideration of heat insulating properties. Further, the physical distribution bale container body 210 may be of a size that can be carried by a person, and a large container such as a container may have a function as the physical distribution bale container body 210. In addition, a heating structure may be disposed in the container.

The thermal insulation instrument holder 220 is provided inside the physical distribution bale container body 210. The logistics bale container 200 is used by placing the thermal insulation tool 100 in the thermal insulation tool holding portion 220. Thereby, the inside of the physical distribution bale container body 210 is maintained at a temperature corresponding to the heat insulating device 100. The thermal insulation tool holding unit 220 may be configured to fix the thermal insulation tool 100. The heat insulating device 100 may be built in the physical distribution bale container body 210, and the heat insulating device 100 itself may be the physical distribution bale container 200.

The thermal insulation device 100 used in the logistics bale container 200 is selected according to the temperature range to be maintained for the articles being baled. The thermal insulation device 100 is selected as the thermal insulation device 100 using the latent heat storage material 150, and the solidification temperature of the latent heat storage material 150 used in the thermal insulation device 100 is included in the temperature range to be maintained for the article, and the melting start temperature is lower than the upper limit of the temperature range to be maintained for the article. By selecting in this way, in the time zone in which the temperature is controlled during the course of the material flow, the controlled temperature can be set to a temperature in a range in which the temperature range in the regeneration period and the temperature range to be maintained for the object to be kept in temperature overlap. As a result, the latent heat storage material 150 can be regenerated by changing the phase from the solid phase to the liquid phase. This confirmed that the heat retention function could be extended.

When the heat retaining device 100 is configured to select the latent heat storage material 150 having such a temperature range, it is preferable that the control temperature (set temperature) normally set in a general heating apparatus (heating (heat retaining) vehicle or heating (heat retaining) warehouse) used for distribution is selected so as to be included in a range in which the temperature range in the regeneration period and the temperature to be retained in the article overlap. By selecting in this way, logistics using the logistics bale container 200 can be performed in logistics using a general heating device of set temperature, and the conveyance route can be flexibly set.

The article storage unit 230 is provided inside the physical distribution packaging container body 210, and can store an article whose temperature range to be maintained is determined. Thereby, the article is maintained at a temperature within the temperature range to be maintained.

As shown in fig. 3B, the logistics bale container 200 may be provided with a plurality of insulated containers 100.

[ second embodiment ]

The present embodiment relates to a structure of a cooling device. The present inventors have found that a latent heat storage material having a difference of less than 1 ℃ between a solidification temperature at which a phase changes from a liquid phase to a solid phase and a melting start temperature at which the phase changes from the solid phase to the liquid phase when temperature adjustment of a cooling object is performed by a cooling device having the latent heat storage material can be regenerated by having high temperature stability in a process of changing the phase from the liquid phase to the solid phase and by controlling the temperature within a temperature range of the solidification temperature or less using such a latent heat storage material, and have achieved the present invention.

Thus, the present inventors have made use of the high temperature stability of the latent heat storage material in the process of changing the phase from the liquid phase to the solid phase, and have made it possible to cool a cooling target with a small temperature change when regenerating the latent heat storage material in the liquid state. In addition, by regenerating the latent heat storage material during the distribution, the cold retention function can be extended. Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

(construction of Cold insulation device)

The cold insulation device of the present invention is a cold insulation device for adjusting the temperature of a cold insulation object used in a logistics packaging container, and comprises a latent heat storage material and a storage part for storing the latent heat storage material, wherein the difference between the solidification temperature at which the phase of the latent heat storage material is changed from a liquid phase to a solid phase and the melting start temperature at which the phase of the latent heat storage material is changed from the solid phase to the liquid phase is less than 1 ℃. Since the cooling device and the cooling device main body according to the present embodiment have the same configurations as those of the heat retention device and the heat retention device main body according to the first embodiment, descriptions of overlapping portions will be omitted. The cooling equipment 100 according to the present embodiment includes a housing portion 120, the housing portion 120 is a hollow region inside the cooling equipment main body 110, and the housing portion 120 includes a heat storage layer 130.

The heat storage layer 130 includes a latent heat storage material 150, and a difference between a solidification temperature at which a phase change from a liquid phase to a solid phase of the latent heat storage material 150 and a melting start temperature at which the phase change from the solid phase to the liquid phase is less than 1 ℃. The material of the latent heat storage material 150 is preferably a material containing organic molecules as a main component, and thus has extremely low supercooling property and a difference between the solidification temperature and the melting start temperature of less than 1 ℃. Specifically, linear alkanes having 13 to 30 carbon atoms, linear alkyl alcohols having 13 to 20 carbon atoms, polyethylene glycols having a molecular weight of 400 to 800, and linear fatty acids having 10 to 14 carbon atoms can be used. Further, it is preferable that tetradecane, pentadecane, and hexadecane, which are straight-chain alkanes having 14 to 16 carbon atoms, have high latent heat values and have a main melting temperature or a freezing temperature in a freezing temperature range (2 to 8 ℃) and a temperature range (8 to 15 ℃) suitable for storing vegetables and fruits, and thus are highly useful.

Further, these materials may be mixed in any ratio, and the main melting start temperature and the solidification temperature are 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 property, but it is possible to use a latent heat storage material in which the difference between the solidification temperature and the melting start temperature is controlled to less than 1 ℃ by adding a supercooling inhibitor. Since the latent heat storage material of the present invention has a small temperature change during the phase transition from the liquid phase to the solid phase, the temperature change of the cooling target is reduced even when the latent heat storage material is in a liquid state after all latent heat is used up during cooling, and the latent heat storage material is regenerated. In general, when a latent heat storage material having supercooling properties is regenerated from a state in which a solid phase and a liquid phase coexist, the temperature change is small because solidification with the solid phase as a nucleation growth point is performed at a temperature lower than the melting start temperature. However, when the regeneration is performed from a completely liquid state, the temperature is lowered to the solidification temperature, and therefore, the solidification does not occur, and the temperature change is large. Therefore, when the latent heat storage material having the supercooling property is used for cooling and regeneration, the amount of the latent heat storage material used is increased more than the amount of the latent heat storage material used in the cooling period so as not to be completely melted. However, in the case of using the latent heat storage material of the present invention, since the latent heat storage material can be regenerated with a small temperature change even when it is completely in a liquid state, all the original latent heat amount is used in cooling by the latent heat storage material. As a result, the amount of latent heat storage material contained in the physical distribution bale container can be reduced. The material of the present invention is not limited to the above-described exemplary materials.

The latent heat storage material 150 is selected according to the temperature to be maintained, which is determined for each cooling target. The latent heat storage material 15 is selected such that the main melting temperature of the latent heat storage material 150 falls within the temperature range to be maintained in the object to be cooled, and the solidification temperature of the latent heat storage material 150 is higher than the lower limit of the temperature range to be maintained in the object to be cooled. By selecting in this way, in the time zone in which the temperature is controlled, the latent heat storage material 150 can be regenerated by changing the phase from the liquid phase to the solid phase by setting the controlled temperature to a temperature in a range in which the temperature range in the regeneration period and the temperature range to be maintained of the cooling target overlap. Further, even if all latent heat is used up during cooling and the latent heat storage material 150 is in a liquid state, the object to be cooled can be cooled with a small temperature change during regeneration of the latent heat storage material, and therefore there is little risk of the object to be cooled departing from the temperature range in which the object to be cooled should be maintained.

[ constitution of physical distribution packaging Container ]

The physical distribution packaging container 200 according to the present embodiment can be used by replacing the heat insulating device 100 with the cold insulating device 100 in the cross-sectional view of the physical distribution packaging container according to the first embodiment shown in fig. 3A and 3B. The logistics bale container 200 includes: the physical distribution bale container body 210; a cold insulation device holding unit 220 that holds a cold insulation device provided in the physical distribution bale container body 210; a cooling device 100 selected according to a temperature range to be maintained for the packed articles; the article storage unit 230 stores articles provided inside the physical distribution packaging container body 210.

The physical distribution package container body 210 may be of a size that can be carried by a person, and a large container such as a container may also function as the physical distribution package container body 210. The physical distribution packaging container 200 may be a container provided with a cooling device such as a refrigerated container. The refrigerated container can accommodate a large amount of goods and can function as a refrigerator during the period when power is supplied during transportation. Therefore, it is preferable to use the article in an entrance or an exit requiring a long time for article transportation. The conventional refrigerated container has problems that it is difficult to maintain the temperature of the goods during a period of no power supply such as a customs inspection, and the freshness and quality of the goods are deteriorated. However, when a refrigerated container is used as the physical distribution packaging container according to the embodiment of the present invention, the cooling apparatus 100 according to the present invention and the articles are stored in the refrigerated container by a shipper, and the cooling apparatus 100 according to the present invention is in the regeneration period when power is supplied, and the latent heat storage material 150 of the cooling apparatus 100 moves during the period when power is not supplied, so that the temperature of the articles can be maintained in the temperature range to be maintained. Therefore, for example, when departing from the temperature range in which red wine, chocolate, fruit, and the like should be maintained, it is possible to set a flexible transport route over a longer time period for entering and exiting freshness, articles whose quality is remarkably deteriorated, and the like.

The heat preservation device 100 used for the logistics bale container 200 is selected according to the temperature range to be maintained for the baled goods. The cold keeping device 100 is selected as the cold keeping device 100 using the latent heat storage material 150, the main melting temperature of the latent heat storage material 150 used by the cold keeping device 100 is included in the temperature range to be maintained of the article, and the solidification temperature of the latent heat storage material 150 is higher than the lower limit of the temperature range to be maintained of the article. By selecting in this way, in the time zone in which the temperature is controlled during the material flow, the controlled temperature can be set to a temperature in a range in which the temperature range in the regeneration period and the temperature range to be maintained for the cooling target overlap. 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. This confirmed that the cooling function could be extended. Further, even if all latent heat is used up during cooling and the latent heat storage material 150 is in a liquid state, the object to be cooled can be cooled with a small temperature change during regeneration of the latent heat storage material, and therefore there is little risk of the object to be cooled departing from the temperature range in which the object to be cooled should be maintained.

When the heat retention device 100 selects the configuration of the latent heat storage material 150 having such a temperature range, it is preferable to select a control temperature (set temperature) such as a refrigeration temperature or a freezing temperature that is normally set by a general cooling apparatus (a refrigerated (freezing) car, a refrigerated (freezing) warehouse, a refrigerated (freezing) shed, a refrigerated container, or the like) used for physical distribution so that the temperature range in the regeneration period and the temperature to be maintained of the product overlap each other. By selecting in this way, logistics using the logistics bale container 200 can be performed in logistics using a general cooling device of set temperature, and the conveyance route can be flexibly set.

Fig. 4 is a conceptual diagram illustrating a usage state of the heat insulating device 100 and the physical distribution packaging container 200 according to the present embodiment. As shown in fig. 4, the heat insulating device 100 and the physical distribution package container 200 according to the present embodiment are used in a state where the articles and the heat insulating device 100 are packed in the physical distribution package container 200. The same applies to the heat insulating device 100 and the physical distribution bale container 200 according to the first embodiment.

[ third embodiment ]

(construction of Logistics System)

The logistics system according to the present embodiment is a logistics system in which, when a heat-retaining device using a latent heat storage material that changes phase from a liquid phase to a solid phase is used, both an article whose temperature range to be retained and the heat-retaining device 100 are packed in a logistics package container 200, and the article is handed over from a sender to a receiver by a carrier, the logistics system including a heating device that controls the temperature outside the logistics package container 200 to be within the temperature range to be retained for the article at least one of before and after a time zone in which the temperature is not controlled, and that heats the logistics package container 200 within an overlap range of the temperature range of the heat storage material 150 used by the heat-retaining device 100 during the regeneration period and the temperature range to be retained for the article.

In addition, the logistics system according to the present embodiment is a logistics system in which, when a heat storage material that utilizes a phase change from a solid phase to a liquid phase is used as a heat retaining device, both an article whose temperature range to be retained is determined and the heat retaining device 100 are packed in a logistics package container 200, and the article is handed over from a sender to a receiver by a carrier, the logistics system including a cooling device that controls the temperature of the outside of the logistics package container 200 to be within the temperature range to be retained for the article at least in one of the front and rear of a time zone in which the temperature is not controlled, and the cooling device cools the logistics package container 200 within an overlap range of the temperature range of the regeneration period of the latent heat storage material 150 used in the heat retaining device 100 and the temperature range to be retained for the article.

Fig. 5A is a conceptual diagram illustrating the latent heat storage material 150 used in the logistics 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 to be maintained for the articles. Fig. 5A shows a case where the main melting temperature of the latent heat storage material 150 is included in the temperature range to be maintained for the article, and the melting start temperature is selected to be lower than the upper limit of the temperature range to be maintained for the article. In the case shown in fig. 5A, the temperature range in which the temperature is controlled by the heating device may be lower than the upper limit of the temperature range of the article that should be maintained 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 property is large, the temperature of the latent heat storage material is increased to the melting start temperature after the temperature of the latent heat storage material is decreased to the solidification temperature when the phase is changed from the liquid phase to the solid phase. Therefore, there is a risk that the temperature change largely deviates from the temperature range to 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 ℃, since the temperature change of the latent heat storage material is small, a phase change from a liquid phase to a solid phase can be used. Thus, when the temperature to be maintained of the article is higher than the ambient temperature (outside air temperature), the article can be kept warm.

Fig. 5B is a conceptual diagram illustrating the latent heat storage material 150 used in the logistics 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 to be maintained for the articles. Fig. 5B shows a case where the main melting temperature of the latent heat storage material 150 is selected so as to be included in the temperature range to be maintained of the article, and the freezing temperature is higher than the lower limit of the temperature range to be maintained of the article. In the case shown in fig. 5B, the temperature range in which the temperature is controlled by the cooling device may be higher than the lower limit of the temperature range in which the article should be kept 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 extended. Further, even if all latent heat is used up during cooling and the latent heat storage material is in a liquid state, the object to be cooled can be cooled with a small temperature change during regeneration of the latent heat storage material, and therefore there is little risk of the object to be cooled departing from the temperature range in which the object to be cooled should be maintained.

Further, since the solidification temperature and the melting start temperature are less than 1 ℃ and the temperature change of the phase change is small, even when an article having a small temperature range to be maintained, such as chocolate (temperature range to be maintained: 15 to 18 ℃) or strawberry (temperature range to be maintained: 1 to 2 ℃), is conveyed, cooling and regeneration can be reliably performed. Further, since the temperature range in which the article is to be held and the regeneration period are repeated is wide, it is not necessary to strictly control the temperature of the cooling device, and even if the upper limit of the temperature range controlled by the cooling device is increased to the vicinity of the solidification temperature, the cost of the cooling device is reduced and the energy saving is increased.

In the time and number of times of controlling the temperature by the heating means or the cooling means, only a part of the time and number may be controlled within the repetition range. Even in this case, when the temperature is controlled to be in the overlapping 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 a temperature range of a distribution system using a conventional heat storage material. As shown in fig. 5C, in the logistics system using the conventional heat storage material, although the temperature range in which the heat storage material can be maintained and the control temperature at the intermediate data point with respect to the temperature range to be maintained of the article are taken into consideration, the relationship between the heat storage material and the control temperature at the intermediate data point is not taken into consideration.

In the above-described logistics system, the latent heat storage material 150 used in the thermal insulation device 100 is selected so that the melting start melting temperature is included in the temperature range to be maintained for the article and the melting temperature is lower than the upper limit of the temperature range to be maintained for the article, but when it is selected so that the main melting temperature is also lower than the upper limit of the temperature range to be maintained for the article, the thermal insulation device 100 may be used as the thermal insulation device 100 according to the ambient temperature.

Specifically, the following examples can be referred to. For example, a case is considered in which the solidification temperature of the latent heat storage material 150 is controlled to 16 ℃, the melting temperature start temperature is controlled to 16 ℃, and the main melting temperature is controlled to 17 ℃ in a temperature zone (15 to 18 ℃) suitable for keeping chocolate warm. In this case, if the ambient temperature is 15 ℃ or lower, the latent heat storage material 150 can be used as the heat insulating device 100 in a liquid phase at 16 to 18 ℃. On the other hand, if the ambient temperature is 18 ℃ or higher, the latent heat storage material 150 can be used as the cold insulation device 100 in a solid phase at 15 to 16 ℃. The heating device and the cooling device are also changed according to the purpose.

[ method for producing Heat-insulating tool and Cold-insulating tool ]

Next, a method of manufacturing the heat retaining device (cooling device) 100 according to the present embodiment will be described. Fig. 6A to 6C are conceptual views showing the manufacturing process of the thermal insulating device 100 according to the present embodiment. First, as shown in fig. 6A, a heat insulating device body (cooling device body) 110 having a hollow region is prepared. Preferably, the thermal insulation device body 110 is provided with an injection port 170 into which the latent heat storage material 150 can be injected. Next, the latent heat storage material 150 is injected. The injection method is not limited, but a cylinder pump, single pump injection method is preferably used. Fig. 6B shows an example using a cylinder pump. As shown in fig. 6B, the filling hose of the cylinder pump is provided at the inlet 170 of the thermal insulator main body 110, and the water absorbing hose is provided 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 latent heat storage material is filled in the piston, the latent heat storage material 150 is injected into the thermal insulation device body 110 by raising the piston.

Thus, as shown in fig. 6C, the plug 190 is formed at the inlet 170 of the thermal insulation device body 110. As a method of forming the plug 190, there are a method of sealing by a conventional method such as ultrasonic welding or thermal welding, and a method of forming a plug which is a screw plug and can be opened and closed by hand. 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 insulating device 100, the thermal insulating device is left at an ambient temperature equal to or 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 used as the cold insulation device 100, the cold insulation device 100 is left standing in an environment at a temperature equal to or lower than the solidification temperature of the latent heat storage material 150 to solidify the latent heat storage material 150. Through such steps, the heat insulating device 100 or the cold insulating device 100 of the present embodiment is manufactured. The technical scope of the present invention is not limited to the above-described embodiments, and various modifications may be made without departing from the scope of the present invention.

[ example 1]

Example 1 is an example of a logistics system using a thermal insulation device according to the first embodiment. In example 1, it is assumed that a food manufacturer who is a consignor delivers cooked rice to be maintained in a temperature range of 20 to 25 ℃ to a logistics system of a store which is a consignee in an environment where the temperature is 10 ℃. First, a thermal insulating container using a material containing heptadecane as a main component as a latent heat storage material was packed in a logistics packing container shown in fig. 3A and 3B in a food manufacturing factory where both cooked rice and the like were at an ambient temperature of 25 ℃. Further, a blow molded container (material: polyethylene, outer shape: 180 × 280 × 29mm/t (cooling equipment body) shown in FIG. 6A was prepared, a liquid filling machine equipped with a cylinder pump shown in FIG. 6B was used for the blow molded container, 800g of latent heat storage material was injected, and an ultrasonic welding machine was used to cover the injection port and seal the container by welding.

At this time, the solidification temperature of the latent heat storage material is 21 ℃, the melting start temperature is 21 ℃, the main melting temperature is 22 ℃, the difference between the solidification temperature and the melting start temperature is less than 1 ℃, and the solidification temperature is within the temperature range to be maintained. When 50ml of the latent heat storage material was placed in a polyethylene bottle and placed in a programmable thermostatic bath so as to be cooled to-20 ℃, the solidification temperature of the latent heat storage material was set to a temperature at which generation of crystal nuclei started. The melting start temperature and the main melting temperature were evaluated by differential scanning calorimetry (using a DSC8213 manufactured by Rigaku corporation, a measurement temperature range of-30 ℃ C., a cooling rate of-5 ℃ C./min, and a heating rate of 5 ℃ C./min).

The logistics bale container was transported to a distribution center by a normal temperature truck at a temperature of 10 c for 2 hours. The distribution center was at 25 c, the package was opened and 1 hour was spent for distribution. Further, it was confirmed that the latent heat storage material in the logistics packaging container was partially solidified when it reached the distribution center, but returned to a liquid after 1 hour from the end of distribution, and it was confirmed that the liquid was regenerated from a solid. Next, the regenerated heat-retaining utensil and the distributed rice are packed in a logistics packing container, and the rice is transported to the shop for 2 hours. When the package was opened, it was confirmed that the quality of cooked rice was maintained and the latent heat storage material of the heat retaining device was partially solid. Thus, in the distribution system of the present invention, since the heat-insulating material is regenerated during the residence time in the distribution center, the heat-insulating material does not need to be replaced in the distribution center, and the distribution system can be transported for a long time. In addition, as long as the distribution system of the present invention is used, the weight of the latent heat storage material to be loaded can be reduced by regeneration during the retention period of the distribution center.

Example 2 and example 3

Fig. 7 shows an example of a latent heat storage material of a cold insulation device according to embodiments 2 and 3 and an example of an article to be transported using the heat storage material. The temperature range during the regeneration period represents a range in a case where the heat-retaining device is used. An example of an appropriate article is selected from latent heat storage materials having various main melting temperatures such as the examples shown in the table, but various articles are directly maintained at a temperature within a temperature range in which they should be maintained, and can be transported without replacing the latent heat storage material in the course of logistics. In addition, when the difference between the solidification temperature and the melting start temperature is less than 1 ℃, the range of the temperature to be maintained and the range of the regeneration period to be repeated can be set with respect to articles having a narrow temperature to be maintained, such as pharmaceuticals and chocolate, and the cold insulating device can be used for a long time.

In one embodiment of the present invention, the following configuration may be adopted. That is, (1) a heat-insulating device according to an embodiment of the present invention is a heat-insulating device for adjusting a temperature of an object to be heat-insulated, the heat-insulating device being used in a logistics packaging container, the heat-insulating device including: a latent heat storage material having a difference between a solidification temperature at which a phase change from a liquid phase to a solid phase is started and a melting start temperature at which a phase change from the solid phase to the liquid phase is started, which is less than 1 ℃; and an accommodating unit for accommodating the latent heat storage material, wherein the latent heat storage material is selected such that a solidification temperature is included in a temperature range to be maintained of the object to be kept warm, and the melting start temperature is lower than an upper limit of the temperature range to be maintained of the object to be kept warm, in accordance with the temperature range to be maintained of the object to be kept warm.

Accordingly, the object to be insulated can be insulated with little temperature change near the solidification temperature by the latent heat of the latent heat storage material, using the high temperature stability of the latent heat storage material in the process of changing from the liquid phase to the solid phase without controlling the time zone of the temperature. Further, since the upper limit of the temperature of the object to be kept warm is higher than the melting start temperature, the latent heat storage material can be changed from the solid phase to the liquid phase by heating the object to be kept warm at a temperature higher than the melting start temperature and lower than the upper limit in the time zone of the control temperature, and the warm keeping function can be extended.

(2) In the cold insulation device according to an embodiment of the present invention, the latent heat storage material contains any one of a linear alkane having 13 to 30 carbon atoms and a linear alkyl alcohol having 13 to 20 carbon atoms.

By using such a latent heat storage material, the phase transition rate from the liquid phase to the solid phase is low due to low thermal conductivity, and therefore, the latent heat storage material can be maintained at a temperature near the solidification temperature for a long time. In addition, tight temperature management can be achieved.

(3) In the cold insulation device according to an embodiment of the present invention, the latent heat storage material contains linear alkane having 15 to 24 carbon atoms.

By using such a latent heat storage material, the phase transition rate from the liquid phase to the solid phase is low due to low thermal conductivity, and therefore, the latent heat storage material can be maintained at a temperature near the solidification temperature for a long time. Further, heat preservation of chocolate, rice, precision instruments and parts, art, blood, organs, and the like can be realized, and strict temperature control can be realized.

(4) In addition, a physical distribution bale container according to an embodiment of the present invention is a physical distribution bale container for packing articles, including: a logistics bale container body; the heat-retaining device according to any one of (1) to (3) above, which is selected according to a temperature range to be maintained for the packed article; a thermal insulation instrument holding unit provided inside the physical distribution bale container main body and configured to hold the thermal insulation instrument; and an article storage unit provided inside the physical distribution packaging container body and configured to store an article.

Thus, the thermal insulating device using the latent heat storage material having high temperature stability in the phase change from the liquid phase to the solid phase can be used in logistics.

(5) A logistics system according to an embodiment of the present invention is a logistics system in which an article whose temperature range to be maintained is determined is packed in the logistics packing container according to the above (4) and is handed over from a sender to a receiver by a carrier, the logistics system including: and a heating device that controls the temperature outside the physical distribution bale container to be within a temperature range to be maintained for the articles, at least one of before and after a time zone in which the temperature is not controlled, wherein the heating device heats the physical distribution bale container at a temperature higher than a melting start temperature of the latent heat storage material and lower than an upper limit of the temperature range to be maintained for the articles, and the latent heat storage material changes phase from a solid phase to a liquid phase.

Thus, in a logistics system using a logistics packaging container using a latent heat storage material, the heat of the article can be preserved in the vicinity of the solidification temperature. Further, the latent heat storage material can be regenerated, and the heat retention function can be extended.

(6) Further, a logistics method according to an embodiment of the present invention is a logistics method in which an article whose temperature range to be maintained is specified is packed in the logistics bale container described in (4) above and is handed over from a sender to a receiver by a carrier, the logistics method including a step of controlling a temperature outside the logistics bale container within the temperature range to be maintained of the article using a heating device that changes the phase of the latent heat storage material from a solid phase to a liquid phase by heating the logistics bale container at a temperature higher than a melting start temperature of the latent heat storage material and lower than an upper limit of the temperature range to be maintained of the article, at least one of before and after a time zone in which the temperature is not controlled.

Thus, in the logistics method using the logistics packaging container using the latent heat storage material, the heat of the article can be preserved at the temperature near the solidification temperature. Further, the latent heat storage material can be regenerated, and the heat retention function can be extended.

(7) A cooling apparatus according to an embodiment of the present invention is a cooling apparatus for adjusting a temperature of a cooling target object used in a logistics packaging container, the cooling apparatus including: a latent heat storage material having a difference between a solidification temperature at which a phase change from a liquid phase to a solid phase is started and a melting start temperature at which a phase change from the solid phase to the liquid phase is started, which is less than 1 ℃; and a storage unit for storing the latent heat storage material, wherein the latent heat storage material is selected such that a main melting temperature is included in a temperature range to be maintained of the object to be cooled, and the freezing temperature is higher than a lower limit of the temperature range to be maintained of the object to be cooled, in accordance with the temperature range to be maintained of the object to be cooled.

Thus, in a time zone where the temperature is not controlled, the cooling target object can be cooled at around the main melting temperature by the latent heat of the latent heat storage material. Further, since the lower limit of the temperature of the object to be kept cold is lower than the solidification temperature, by setting the controlled temperature to be lower than the solidification temperature of the latent heat storage material and higher than the lower limit of the temperature range to be kept cold of the object to be kept cold in the time zone of the controlled temperature, the latent heat storage material can be changed from the liquid phase to the solid phase to be regenerated, and the cold keeping function can be extended. Further, the high temperature stability in the process of changing from the liquid phase to the solid phase using the latent heat storage material allows the cooling target to be cooled in a state with a small temperature change even when the latent heat storage material is regenerated by using the liquid state after using all latent heat in cooling.

(8) In the cold insulation device according to an embodiment of the present invention, the latent heat storage material contains any one of linear alkane having 13 to 30 carbon atoms and linear alkyl alcohol having 13 to 20 carbon atoms.

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

(9) In the cold insulation device according to an embodiment of the present invention, the latent heat storage material includes linear alkane having 14 to 16 carbon atoms.

By using such a latent heat storage material, it is possible to keep the temperature in a useful refrigeration temperature range (2 to 8 ℃) and a temperature range (8 to 15 ℃) suitable for storing vegetables and fruits. In addition, tight temperature management can be achieved.

(10) In addition, a physical distribution packaging container according to an embodiment of the present invention is a physical distribution packaging container for packaging an article, including: a logistics bale container body; the cold-storage appliance according to any one of the items (7) to (9), which is selected in accordance with a temperature range to be maintained for a packed article; a cooling device holding unit provided inside the physical distribution bale container main body and configured to hold the cooling device; and an article storage unit provided inside the physical distribution packaging container body and configured to store an article.

Thus, a cold insulation appliance using a latent heat storage material having high temperature stability in a phase change from a liquid phase to a solid phase can be used in logistics.

(11) Further, a logistics system according to an aspect of the present invention is a logistics system in which an article whose temperature range to be maintained is specified is packed in the logistics packing container according to the above (10) and is handed over from a sender to a receiver by a carrier, the logistics system including a cooling device that controls the temperature outside the logistics packing container to be within the temperature range to be maintained of the article at least one of before and after a time zone in which the temperature is not controlled, the cooling device changing the latent heat storage material from a liquid phase to a solid phase by cooling the logistics packing container to a temperature lower than the solidification temperature of the latent heat storage material and higher than the lower limit of the temperature range to be maintained of the article.

Thus, in a distribution system using a distribution packaging container using a latent heat storage material, the latent heat storage material can be regenerated, and the cold-keeping function can be extended. Even if latent heat is used up and becomes liquid during cooling, the object to be cooled can be cooled with a small temperature change during regeneration of the latent heat storage material.

(12) A logistics method according to an aspect of the present invention is a logistics system in which an article whose temperature range to be maintained is determined is packed in the logistics packing container according to the above (10) and is handed over from a sender to a receiver by a carrier, the logistics system including: and a step of controlling the temperature outside the physical distribution packaging container within a temperature range to be maintained for the article using a cooling device that cools the physical distribution 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 to be maintained for the article, at least one of before and after the time zone in which the temperature is not controlled, the latent heat storage material changing from a liquid phase to a solid phase.

Thus, in the logistics method using the logistics packaging container using the latent heat storage material, the latent heat storage material can be regenerated, and the cold insulation function can be prolonged. Even if latent heat is used up and becomes liquid during cooling, the object to be cooled can be cooled with a small temperature change during regeneration of the latent heat storage material.

In addition, the international application is based on the priority claim of the japanese patent application No. 2017-063250 applied in 2017, 3 and 28, and the entire content of the japanese patent application No. 2017-063250 is incorporated into the international application.

Description of the reference numerals

100 … heat preservation device and cold preservation device

110 … Heat-insulating device body and Cold-insulating device body

120 … accommodating part

130 … heat storage layer

150 … latent heat storage material

170 … injection port

190 … bolt

200 … logistics bale container

210 … physical distribution bale container body

220 … holding unit for heat-insulating device and holding unit for cold-insulating device

230 … article receiving part

240 … accommodating part

250 … cover part

Claims

1. A logistics system in which an article whose temperature range to be maintained is determined is bundled in a logistics bale container for baling the article, and handed over from a sender to a receiver by a carrier, the logistics system comprising:

a heating device that controls a time zone of a temperature outside the logistics bale container during logistics, controls the temperature outside the logistics bale container within a temperature range that the article should be kept within,

the logistics bale container comprises:

a logistics bale container body;

a heat-insulating tool that is selected according to a temperature range to be maintained for the packed articles and that adjusts the temperature of the object to be heat-insulated;

a thermal insulation instrument holding unit which is provided inside the physical distribution bale container main body and holds the thermal insulation instrument;

an article storage unit provided inside the physical distribution packaging container body and configured to store an article,

the heat-insulating appliance comprises:

a latent heat storage material having a difference between a solidification temperature at which a phase change from a liquid phase to a solid phase is started and a melting start temperature at which a phase change from the solid phase to the liquid phase is started of less than 1 ℃,

an accommodating portion for accommodating the latent heat storage material,

the latent heat storage material is selected so that the solidification temperature is included in the temperature range to be maintained of the object to be kept warm and the melting start temperature is lower than the upper limit of the temperature range to be maintained of the object to be kept warm,

the heating device heats the physical distribution bale container at a temperature higher than a melting start temperature of the latent heat storage material that changes from a solid phase to a liquid phase and lower than an upper limit of a temperature range in which the articles should be kept.

2. The material flow system according to claim 1, wherein the latent heat storage material contains any one of a linear alkane having 13 to 30 carbon atoms and a linear alkyl alcohol having 13 to 20 carbon atoms.

3. The logistics system of claim 1, wherein the latent heat storage material comprises a linear alkane having 15-24 carbon atoms.

4. A logistics system in which an article whose temperature range to be maintained is determined is bundled in a logistics bale container for baling the article, handed over from a sender to a receiver by a carrier, characterized in that,

the logistics system comprises:

a cooling device that controls a time zone of a temperature outside the physical distribution bale container during the physical distribution process, the temperature outside the physical distribution bale container being controlled within a temperature range in which the article should be maintained,

the logistics bale container comprises:

a logistics bale container body;

a cooling device that is selected according to a temperature range to be maintained for packed articles and that adjusts the temperature of a cooling target;

a cooling device holding unit provided inside the physical distribution bale container body and configured to hold the cooling device;

the cold insulation apparatus includes:

a storage unit for storing the latent heat storage material,

the latent heat storage material is selected so that a main melting temperature falls within a temperature range to be maintained of the object to be cooled and the freezing temperature is higher than a lower limit of the temperature range to be maintained of the object to be cooled,

the cooling device cools the physical distribution bale container at a temperature lower than the solidification temperature of the latent heat storage material that changes phase from a liquid phase to a solid phase and higher than a lower limit of a temperature range in which the articles should be kept.

5. The material flow system according to claim 4, wherein the latent heat storage material contains any one of a linear alkane having 13 to 30 carbon atoms and a linear alkyl alcohol having 13 to 20 carbon atoms.

6. The logistics system of claim 4, wherein the latent heat storage material comprises linear alkane with 15-24 carbon atoms.

7. A logistics method in which an article whose temperature range to be maintained is determined is bundled in a logistics bale container for baling the article, and handed over from a sender to a receiver by a carrier, the logistics method comprising:

a step of controlling the temperature outside the physical distribution bale container in a time zone of controlling the temperature outside the physical distribution bale container in the physical distribution process, using a heating device or a cooling device to control the temperature outside the physical distribution bale container within a temperature range in which the article should be maintained,

the heating device heats the physical distribution bale container at a temperature higher than a melting start temperature of a latent heat storage material that changes from a solid phase to a liquid phase and lower than an upper limit of a temperature range in which the articles should be kept,

8. The material flow method according to claim 7, wherein the latent heat storage material contains any one of a linear alkane having 13 to 30 carbon atoms and a linear alkyl alcohol having 13 to 20 carbon atoms.

9. The logistics method according to claim 7, wherein the latent heat storage material comprises a linear alkane having 15 to 24 carbon atoms.