JP6305301B2 - Multi-temperature zone container and method for forming multi-temperature zone container - Google Patents

Description

  The present invention relates to a multi-temperature zone storage container and a method for forming a multi-temperature zone storage container.

  In general, when an article such as food that requires strict temperature control is transported, a storage container capable of holding the inside in a predetermined temperature zone is used. By storing the article in such a storage container, it is possible to suppress deterioration in the quality of the article during transportation or after a certain period of time has passed since transportation.

  For example, Patent Document 1 discloses a storage container including a foldable box with a lid formed of a heat insulating material and an inner bag that is housed in the box. In this storage container, the inner bag is composed of a bottom portion, four side portions, and a lid portion, and can wrap the object to be transported in a rectangular parallelepiped shape, and is configured to cover the entire six surfaces of the object to be transported. Yes. The box includes one side plate or two adjacent side plates. These side plates can be selectively laid down. The inner bag includes one side corresponding to the side plate of the box that can be laid down or two adjacent side portions. These side portions can be made to lie down from a standing state, thereby making an opening at the laid-down position.

  As another example, for example, Patent Document 2 describes three temperature zones (−25 ° C. frozen, + 5 ° C. chilled, and + 20 ° C.) depending on changes in the order quantity of retail foods due to changes in summer and winter seasons. (Heating) A multi-store multi-delivery method for frozen, chilled, and heated foods that enables adjustment of the amount of loading of other retail foods is disclosed. In the invention described in Patent Document 2, the delivery vehicle itself is a storage container, and the above three temperature zones are configured by including a partition plate that partitions the interior of the delivery vehicle.

  As another storage container, for example, Patent Document 3 discloses a storage container composed of a container main body and a lid that can be divided into two or more compartments having different cooling temperatures, and includes a side wall and a bottom surface of the container main body in the low temperature side compartment. There is disclosed a storage container provided with a partition that increases the thickness of any or all of the lids and that partitions the container into the low temperature side compartment and the high temperature side compartment.

Japanese Patent No. 5294822 JP 2007-153467 A JP 2005-104567 A

However, the storage container described in Patent Document 1 has only one temperature zone, and there is a problem that it is difficult to store articles in a plurality of temperature zones such as freezing, refrigeration, and room temperature.
In the multi-store multi-delivery method described in Patent Document 2, the above-described problem in the storage container described in Patent Document 1 is solved, and retail food can be stored in a delivery vehicle for each of three temperature zones. There is a problem that the selection range of the transportation means is narrow, such as the large storage container and the impossible of manual transportation.
In the storage container described in Patent Document 3, the above-mentioned problems in the multi-temperature zone storage container described in Patent Document 1 and the multi-store multi-delivery method described in Patent Document 2 are solved, but the installation position of the partition wall However, there is a problem that it is limited between the protrusions provided in the container body and cannot be freely changed. In addition, in order to control the temperature for each section, a plurality of types of regenerator materials such as dry ice and a cold insulation agent are used, so that there is a problem that management for each type of regenerator material becomes complicated.

  The present invention has been made to solve the above-described problems, and has a wide selection range of transportation means, constitutes a plurality of temperature zones, and maintains a good temperature in each temperature zone. It is an object of the present invention to provide a multi-temperature zone storage container and a method for forming a multi-temperature zone storage container that can easily change the size of an area and facilitate management of a regenerator material.

In the multi-temperature zone storage container of the present invention, a plurality of interior bodies having heat insulation properties are accommodated in a heat-insulating and portable exterior body, and the internal temperatures of the plurality of interior bodies are made different. A first heat retaining portion provided with one kind of cold storage material is provided above at least one of the plurality of interior bodies, and the exterior body includes a wall portion and a bottom portion, A mounting portion on which the first heat retaining portion is placed is formed at an upper portion, and a partition that suppresses movement of the first heat retaining portion placed on the placing portion at a predetermined position of the placing portion. The interior body is a coolable bag that can be opened and closed and is composed of at least a single layer or a plurality of layers of foamed resin sheets .
In the multi-temperature zone storage container of the present invention, a plurality of interior bodies having heat insulation properties are housed in a heat-insulating and portable exterior body, and the interior temperatures of the plurality of interior bodies are different. A first heat retaining portion made of one kind of cold storage material is provided above at least one of the plurality of interior bodies, and at least one of the one or more interior bodies The temperature zone configured inside is 0 ° C. or more and 10 ° C. or less, and the thermal conductivity of the interior body is 5.0 [W / m ² · K] or more and 12.0 [W / m ² · K] or less. It is characterized by being.
The heat transmissivity M [W / m ² · K] is a value defined by M = 1 / {(material thickness [m]) / (material thermal conductivity [W / m · K])}. It is.
According to the multi-temperature zone storage container, the outer body can be carried, so it can be lifted and carried by the operator's hand, or placed on a carriage or carrier in a single state or in a state of being stacked in a small number of stages. All transport options are possible, such as being transported. In addition, the interior of the exterior body is partitioned into a plurality of areas by a plurality of interior bodies, and a first heat retaining portion is provided above at least one or more interior bodies so as to vary the temperature inside each interior body. Therefore, the temperature range composed of the interior body that does not include the first heat retaining part and the temperature range that is lower than the temperature range composed of the interior of the interior body that includes the first heat retaining part are provided inside the exterior body. A temperature zone is formed. The exterior body and the interior body have heat insulating properties, and the first heat retaining portion is provided above the interior body, thereby suppressing the occurrence of air convection due to the temperature difference inside each interior body, The temperature in the temperature zone is well maintained within a predetermined range. As the size of the interior body is changed, the area of each temperature zone can be changed freely and easily. Furthermore, since the 1st heat retention part is equipped with one kind of cool storage material, management of several cool storage materials like before becomes unnecessary.
Moreover, according to the said multi-temperature zone storage container, the heat insulation of an interior body is ensured reliably and the partition excellent in heat insulation is provided between each temperature zone.

Also, in a multi-temperature zone storage container of the present invention, it is preferable that the heat transfer coefficient of the outer package is ^{0.5 [W / m 2 · K} ] or ^{6.0 [W / m 2 · K} ] or less.
According to the above multi-temperature zone storage container, the effective heat transmissivity of the entire multi-temperature zone storage container is more reliably ensured, and the interior of each interior body is less susceptible to the environmental temperature outside the exterior body, The heat retention in each temperature zone is increased.

In the multi-temperature zone storage container of the present invention, it is preferable that a lid is provided on the upper part of the exterior body, and a distance between the upper surface of the first heat retaining portion and the bottom surface of the lid is 3 mm or more.
According to the multi-temperature zone storage container, the temperature rise of the regenerator material due to the thermal equilibrium between the first heat retaining portion and the lid is suppressed, and the inner product of the interior body relative to the inner product of the exterior body is further secured.

In the multi-temperature zone storage container of the present invention, among the one or more interior bodies having the first heat retaining part, at least one of the interior bodies is provided with a cold storage material of the same type as the first heat retaining part . It is preferable that two heat retaining portions are provided.
According to the multi-temperature zone storage container, the temperature zone constituted by the interior body in which the first heat retaining portion is provided above and the second heat retaining portion is provided inside has only the first heat retaining portion above. Thus, the temperature is further lower than the temperature range constituted by the interior body that does not have the second heat retaining part. Accordingly, three or more temperature zones are formed inside the exterior body by adding the interior of the interior body provided with the second heat retaining portion to the two temperature zones.

In the multi-temperature zone storage container of the present invention, it is preferable that the interior body has a temperature display function that reflects the internal temperature.
According to the multi-temperature zone storage container, the interior body has the temperature display function, so that the temperature zone can be easily identified when the interior of the exterior body is viewed.

In the multi-temperature zone storage container of the present invention, it is preferable that the exterior body has a folded structure.
According to the said multi-temperature zone storage container, an exterior body is stored compactly by folding before and behind the accommodation of accommodation, and the working efficiency at the time of carrying is improved.
Further, the multi-temperature zone storage container of the present invention has a heat insulating and portable exterior body in which three interior bodies having heat insulation properties are accommodated, and the internal temperature of each of the three interior bodies is different. As shown, the first heat retaining portion made of one kind of cold storage material is not provided above the first interior body among the three interior bodies, and the second and third interior bodies among the three interior bodies are not provided. The first heat retaining portion is provided above the second interior body, the second heat retaining portion made of the same type of cold storage material as the first heat retaining portion is disposed inside the third interior body, and the first interior body is disposed inside. The temperature zone comprised is 10 degreeC or more and 20 degrees C or less, The temperature zone comprised inside the said 2nd interior body is 0 degreeC or more and 10 degrees C or less, and is comprised inside the said 3rd interior body. The temperature range is -20 ° C. or more and −15 ° C. or less, and the thermal conductivity of the three interior bodies is 5.0 [W / m ² · K] or more and 7.0 [W / m ² · K] or less .

A method for forming a multi-temperature zone storage container according to the present invention is a method for forming the multi-temperature zone storage container , wherein a plurality of interior bodies having heat insulation are provided on an exterior body having heat insulation and being portable. An inner body housing step of housing, and a first heat retaining portion installation step of installing a first heat retaining portion provided with one type of cold storage material above at least one of the plurality of inner bodies. It is characterized by having.
According to the method for forming the multi-temperature zone storage container, by making the exterior body portable, options for all means of transportation such as carrying by an operator or carrying on an trolley or carrier can be considered. Further, the interior of the exterior body is divided into a plurality of areas by a plurality of interior bodies, and the first heat retaining part is provided above the at least one interior body, thereby providing the first heat retaining part inside the exterior body. It is possible to form two temperature zones, a temperature zone consisting of the interior of the non-interior body and a temperature zone lower than the temperature zone consisting of the interior of the interior body provided with the first heat retaining portion. By using the exterior body and the interior body having heat insulation properties, the first heat retaining portion is installed above the interior body, thereby suppressing the occurrence of air convection due to the temperature difference inside each interior body, The temperature can be kept well within a predetermined range. And with the size change of an interior body, the area of each temperature zone can also be changed freely and easily. Furthermore, since the first heat retaining unit is made of one type of cold storage material, the management of a plurality of cold storage materials as in the past becomes unnecessary.

  According to the present invention, the selection range of the transportation means is wide, and a plurality of temperature zones are configured, the temperature of each temperature zone is well maintained, and the size of each temperature zone can be easily changed, A multi-temperature zone storage container and a method for forming a multi-temperature zone storage container that facilitate the management of the cold storage material are provided.

It is the schematic of the exterior body which comprises the multi-temperature zone storage container which is one Embodiment of this invention, Comprising: (a) is a perspective view which shows the assembled state, (b) shows the folded state It is a perspective view. It is a figure which shows the multi-temperature zone storage container which is one Embodiment of this invention, and is sectional drawing of the multi-temperature zone storage container in which two temperature zones were formed. It is another figure which shows the multi-temperature zone storage container which is one Embodiment of this invention, and is sectional drawing of the multi-temperature zone storage container in which three temperature zones were formed. It is a figure which shows the multi-temperature zone storage container which is one Embodiment of this invention, and is sectional drawing of the multi-temperature zone storage container in which two temperature zones were formed inside the exterior body provided with the cover. It is another figure which shows the multi-temperature zone storage container which is one Embodiment of this invention, and is sectional drawing of the multi-temperature zone storage container by which three temperature zones were formed inside the exterior body provided with the lid | cover.

  Hereinafter, a method for forming a multi-temperature zone storage container and a multi-temperature zone storage container according to an embodiment of the present invention will be described with reference to FIGS. The drawings used in the following description are schematic, and the length, width, thickness ratio, and the like are not necessarily the same as actual ones, and can be changed as appropriate.

[Multi-temperature storage container]
The multi-temperature zone storage container 1 according to the present embodiment is a container that is used to store articles when transporting articles that are required to be managed in an environment of a predetermined temperature zone. The article is represented by food such as frozen food and refrigerated food, but is not particularly limited to food.
The multi-temperature zone storage container 1 includes an exterior body 2, a plurality of interior bodies 3 (see FIG. 2) accommodated inside the exterior body 2, and at least one interior body 3 among the plurality of interior bodies 3. And a first heat retaining unit 4 (see FIG. 2) provided above.

1A and 1B are schematic views of the exterior body 2, in which FIG. 1A is a perspective view illustrating an assembled state, and FIG. 1B is a perspective view illustrating a folded state.
The exterior body 2 is a container that has heat insulation properties and can be held by hand. 1A and 1B illustrate an exterior body 2 in the form of a container. The exterior body 2 is made of a resin material having excellent strength in the present embodiment. The resin material constituting the wall portion is provided with a place for installing the heat insulating material and provided with a heat insulating material (not shown). In addition, the exterior body 2 may be comprised with the material which has heat insulation. In the present embodiment, the wall surface of the exterior body 2 is close to the wall surface of the interior body 3, and exhibits an effective heat transmissibility described later together with the wall surface of the interior body 3. Examples of the heat insulating material include foamed resins such as polystyrene, polypropylene, and polyethylene, but are not particularly limited thereto. Examples of the material having low heat insulation include non-foamed resins such as polypropylene, polystyrene, and polyethylene, but are not particularly limited thereto. Examples of the heat insulating material provided in the outer package 2 include, but are not particularly limited to, foamed resins such as urethane, polystyrene, polypropylene, and polyethylene.

The wall portion 9 and the bottom portion 15 of the container 8 constituting the exterior body 2 may be made of a foamed resin molded body or may be made of a non-foamed resin.
In the case of a foamed resin molded body, polypropylene, polystyrene, or the like is used as the material for the wall 9 and the bottom 15 .
When the non-foamed resin is used, the outer frame (wall) 11 shown in FIGS. 1A and 1B is formed from the non-foamed resin, and the inside 11n of the outer frame 11 is hollow. In addition, the inside of the outer frame 11 may be filled with foamed resin or non-foamed resin. As the foamed resin, for example, urethane or polypropylene is used. As the non-foamed resin, polypropylene or polyethylene having cold resistance is preferable.
The exterior body 2 may be provided with a lid (not shown in FIGS. 1A and 1B). The configuration of the lid is the same as that of the container 8 described above.

Moreover, when the heat insulation performance of the container 8 and the lid is low, in order to enhance the heat insulation performance, it is possible to provide the exterior body 2 of the present invention by covering the entire container 8 (including the lid) with a heat insulation cover. is there. As the heat insulating cover, for example, a polyethylene foam sheet deposited with an aluminum sheet is preferable. In this case, a configuration that can be freely opened and closed by a fastener (registered trademark) or the like is preferable.
The configuration of the exterior body 2 described above is an example of the exterior body 2 of the present invention, and the exterior body 2 of the present invention has the above-described configuration as long as it has high heat insulation performance and has strength to withstand stacking. It is not limited.

  The exterior body 2 is formed in the size which can be carried. Here, “carrying” means mainly carrying by an operator, but is not necessarily limited to carrying. Although the magnitude | size of the exterior body 2 is not restrict | limited in particular, It is preferable that it is 10 liters or more and 60 liters or less from a viewpoint which the accommodation capacity of articles | goods is ensured moderately and an operator becomes easy to carry. Further, from the viewpoint of increasing the efficiency of the worker's transportation work, the exterior body 2 is formed so as to be foldable from the assembled state shown in FIG. 1A to the folded state shown in FIG. It is preferable. That is, the exterior body 2 preferably has a folded structure. In the present embodiment, as the folding structure, hinges are provided at the upper ends of the plate portions 9A and 9B constituting the wall portion 9 in the exterior body 2. Further, the plate portion 9B can be bent at substantially the center in the height direction. The hinges allow the upper portions of the plate portions 9A and 9B to be rotated inside the exterior body 2 around the upper end. In such a configuration, the lower portion of the plate portion 9A is pushed toward the inside of the exterior body 2, and the upper end of the exterior body 2 is pushed downward, and the plate portion 9B is bent at the approximate center in the height direction, thereby making a one-touch operation. The exterior body 2 can be easily folded.

In order to have heat insulation, the interior body 3 is made of a material having heat insulation in the present embodiment. The interior body 3 is composed of a single layer or a plurality of layers made of a low heat insulating material different from the above material, and a heat insulating material is provided between one or both of the innermost layer, the outermost outer layer, or a plurality of layers. It may be provided. Examples of the material having a heat insulating property and the material having a low heat insulating property include the same resin as the material constituting the exterior body 2 described above, but are not particularly limited thereto. Examples of the heat insulating material provided in the interior body 3 include, but are not limited to, foamed resins such as polystyrene, polypropylene, and polyethylene.
As the material for the interior body 3, a material obtained by vapor-depositing aluminum on a polyethylene foam sheet is particularly preferable.
From the viewpoint of facilitating accommodation or removal of the article Q, the interior body 3 is preferably formed to be openable and closable. Moreover, from the viewpoint of changing the sizes of the plurality of temperature zones depending on the volumes of the plurality of interior bodies 3, the interior body 3 is preferably easy to manufacture with different sizes. Examples of the interior body 3 that satisfies these preferable conditions include, but are not particularly limited to, a cold insulation bag that can be divided into a main body portion and a lid portion by a fastener (registered trademark) or the like.

  Moreover, for the purpose of enabling identification of the temperature zone at first glance, the interior body 3 preferably has a temperature display function that reflects the internal temperature. Examples of the interior body 3 having a temperature display function include, but are not particularly limited to, those provided with a thermochromic color material that changes color, develops, or fades at a specific temperature.

  FIG. 2 is a diagram showing a multi-temperature zone storage container 1 in which two interior bodies 3A and 3B are accommodated inside the exterior body 2, and a multi-temperature zone storage container 1A in which two temperature zones T1 and T2 are formed. FIG. The interior bodies 3A and 3B are accommodated adjacent to each other so as to partition the interior of the exterior body 2 without a gap. The volumes of the interior bodies 3A and 3B are set in consideration of the size and quantity of the articles Q to be accommodated.

  FIG. 3 is a view showing the multi-temperature zone storage container 1 in which the three interior bodies 3A, 3B, 3C are accommodated inside the exterior body 2, and the multi-temperature in which the three temperature zones T1, T2, T3 are formed. It is sectional drawing of the belt | band | zone storage container 1B. The interior bodies 3A, 3B, 3C are accommodated adjacently so as to partition the interior of the exterior body 2 without a gap. Similar to the interior bodies 3A and 3B, the volume of the interior body 3C is set in consideration of the size and quantity of the articles Q to be accommodated.

  Of the plurality of interior bodies 3A, 3B, 3C, the first heat retaining portion 4 is installed above the interior bodies 3B, 3C. In this embodiment, the 1st heat retention part 4 is mounted and fixed to the upper surface of interior body 3B, 3C. From the viewpoint of efficiently supplying cool air from the first heat retaining part 4 to the lower side of the interior bodies 3B, 3C, the first heat retaining part 4 is preferably in contact with the upper surfaces of the interior bodies 3B, 3C. It is preferable that the distance between the bottom surface of the one heat retaining portion 4 and the top surfaces of the interior bodies 3B and 3C is within 30 mm.

  Among the plurality of interior bodies 3A, 3B, 3C, in the interior body 3C, the second heat retaining portion 10 is installed so as to be in contact with the top surface, the side surface, and the bottom surface of the article Q. FIG. 3 illustrates a configuration in which the second heat retaining unit 10 is disposed so as to be in contact with the upper surface and the side surface of the article Q, and is disposed between the bottom surface of the article Q and the bottom surface of the interior body 3C. .

  The 1st heat retention part 4 and the 2nd heat retention part 10 are one kind of cool storage materials, and are used in order to form a lower temperature zone. Examples of the cold storage material include dry ice, but are not particularly limited thereto. From the viewpoint of being widely applicable to a temperature range of −20 ° C. or more and 10 ° C. or less that is frequently used for storing articles in a so-called frozen or refrigerated state, as a cold storage material, a cold storage of −20 ° C. or −25 ° C. A material is preferable, for example, a cold insulating material in which a natural polymer compound or an inorganic substance is contained in a polyethylene container. In addition, the cool storage material should just be a suitable thing in consideration of the temperature zones T2 and T3 of the interior bodies 3B and 3C.

Inside the interior body 3B having the above-described configuration, the cool air from the first heat retaining portion 4 installed above falls. Then, the cold air and the warm air existing inside the interior body 3B are convected. Due to the energy exchange between the cool air from the first heat retaining part 4 and the warm air existing inside the interior body 3B, the temperature inside the interior body 3B is the temperature inside the interior body 3A that does not include the first heat retaining part 4. It will be lower.
In this way, two temperature zones T1, T2 (see FIG. 2) are formed in the multi-temperature zone storage container 1B.

Inside the interior body 3C having the above-described configuration, the cool air from the first heat retaining section 4 is lowered in the same manner as the interior body 3B, and the second heat retaining section 10 around the article Q accommodated in the bottom of the interior body 3C. Cold air from the convection. Since the cool air from the first heat retaining portion 4 and the second heat retaining portion 10 is substantially filled inside the interior body 3C, the temperature inside the interior body 3C is further lowered than the temperature inside the interior body 3B.
In this way, the three temperature zones T1, T2, T3 (see FIG. 3) are formed in the multi-temperature zone storage container 1B.

From the viewpoint of more reliably holding the temperature zones T1, T2, T3 configured in the exterior body 2, for example, the temperature zone T1 is 10 ° C. or higher and 20 ° C. or lower, and the temperature zone T2 is 0 ° C. or higher and 10 ° C. or lower, When T3 is −20 ° C. or more and −15 ° C. or less, the thermal conductivity M ₂ of the outer package 2 defined by the following formula (1) is 0.5 [W / m ² · K] or more and 6.0. [W / m ² · K] or less is preferable, and 1.0 [W / m ² · K] or more and 3.0 [W / m ² · K] or less is more preferable.

From the viewpoint of ensuring the heat insulation of the interior body 3 more reliably, for example, the temperature zone T1 is 10 ° C. or more and 20 ° C. or less, the temperature zone T2 is 0 ° C. or more and 10 ° C. or less, and the temperature zone T3 is −20 ° C. or more and −15 If it is below ° C., the thermal conductivity M ₃ of the interior body 3 defined by the following formula (2) is 1.0 [W / m ² · K] or more and 12.0 [W / m ² · K]. Or less, more preferably 5.0 [W / m ² · K] or more and 7.0 [W / m ² · K] or less. Thus, the heat transmissibility M3 of the interior body ₃ is set in consideration of the respective temperature zones T1, T2, T3 of the interior bodies 3A, 3B, 3C. With the selection of the material of the interior body 3, the thickness of the wall surface of the interior body 3 is appropriately adjusted.

The heat transmissivity M ₃ of the inner body ₃ is determined in consideration of the combination of the temperature zones T1, T2, T3 of the inner bodies 3A, 3B, 3C and the temperature zones T1, T2, T3 in the multi-temperature zone container 1. Is set. With the selection of the material of the interior body 3, the thickness of the wall surface of the interior body 3 is appropriately adjusted.
For example, when the temperature zones T1 and T3 in the above-described range are formed in the multi-temperature zone storage container 1, the thermal conductivity M3 of the interior body ₃ is about 1.0 [W / m ² · K]. preferable. For example, when the temperature zones T2 and T3 in the above-described range are formed in the multi-temperature zone container 1, the thermal conductivity M3 of the interior body ₃ is 5.0 [W / m ² · K] or more and 7.0 [ W / m ² · K] or less is preferable. For example, when the temperature zones T1 and T2 in the above-described range are formed in the multi-temperature zone storage container 1, the heat flow rate M3 of the interior body ₃ is about 12.0 [W / m ² · K]. preferable.

In the multi-temperature zone storage container 1, the wall surface of the exterior body 2 and the wall surfaces of the plurality of interior bodies 3 are close to each other, and it is important that the distance between both wall surfaces is 0 mm or more and 5 mm or less. Thereby, the effective thermal conductivity of the outer peripheral part of the multi-temperature zone storage container 1 is obtained by combining the wall surface of the exterior body 2 and the wall surface of the interior body 3. Effective heat transmission coefficient M ₁ of the outer peripheral portion of the multi-temperature zone container 1 is defined as (3) below.

From the viewpoint of minimizing the influence of the environmental temperature on the temperature zones T1, T2, and T3 in the multi-temperature zone container 1, the effective heat transmissibility M ₁ is 0.3 [W / m ² · K] or more and 4.0 [ W / m ² · K] or less is sufficient, and preferably 0.8 [W / m ² · K] or more and 2.5 [W / m ² · K] or less.

FIG. 4 is a cross-sectional view of a multi-temperature zone storage container 1 </ b> C in which two temperature zones T <b> 1 and T <b> 2 are formed inside the exterior body 2 including the lid 6. FIG. 5 is a cross-sectional view of a multi-temperature zone storage container 1D in which three temperature zones T1, T2, and T3 are formed inside the outer package 2 including the lid 6.
As shown in FIG.4 and FIG.5, the 1st heat insulation part 4 by the cold air of the 1st heat insulation part 4 installed above the interior bodies 3B and 3C which comprise the temperature zones T2 and T3 flows out upwards. It is preferable that a lid 6 is provided on the upper part of the exterior body 2 from the viewpoint of suppressing the temperature rise and increasing the holding time of the first heat retaining portion 4. Moreover, it is preferable that the distance of the upper surface 4t of the 1st heat retention part 4 and the bottom face 6b of the lid | cover 6 is 3 mm or more and 30 mm or less. If the distance is smaller than 3 mm, the cold air in the first heat retaining unit 4 moves to the lid 6, the temperature of the first heat retaining unit 4 rises, and the holding time of the first heat retaining unit 4 may be shortened. On the other hand, when the distance is larger than 30 mm, for example, the inner product of the interior body 3 with respect to the inner product of the exterior body 2 becomes too small and the article Q cannot be accommodated.
Therefore, a placement portion 12 on which the first heat retaining portion 4 is placed is formed on the upper portion (near the opening) of the wall portion 9. The mounting part 12 protrudes toward the opposing wall part 9 and is formed so that both ends of the first heat retaining part 4 are supported. Moreover, in order to suppress the movement of the 1st heat retention part 4 mounted in the mounting part 12, the partition part 13 is formed in the upper part (near opening) of the wall part 9. As shown in FIG. The partition portion 13 is erected at a predetermined position of the placement portion 12 and is formed so as to protrude from the wall portion 9 at a higher position of the placement portion 12.

[Method for forming multi-temperature storage container]
The method for forming the multi-temperature zone storage container 1 includes an interior body housing step of housing a plurality of interior bodies 3 having heat insulation properties in a portable exterior body 2 having heat insulation properties and a plurality of interior bodies 3. Among them, there is a heat insulation part installation step of installing the first heat insulation part 4 made of one kind of cold storage material above at least one or more interior bodies 3. Hereinafter, a method for forming the multi-temperature zone storage containers 1A, 1B, 1C, and 1D shown in FIGS.

(Interior body accommodation process)
Necessary interior bodies 3A, 3B, 3C are accommodated in the exterior body 2 so as to be partitioned into areas corresponding to the temperature zones T1, T2, T3. Thereby, the space of temperature zone T1, T2, T3 is ensured inside the exterior body 2. FIG.

(Insulation section installation process)
Next, the interior bodies 3A, 3B, 3C are opened, and the second heat retaining portion 10 is installed only on the bottom surface of the interior body 3C. Subsequently, the articles Q corresponding to the temperature zones T1, T2, and T3 formed in each interior body are accommodated. At this time, the second heat retaining unit 10 is installed so as to be in contact with the side surface and the upper surface of the article Q of the interior body 3C. After closing the interior bodies 3A, 3B, 3C, the first heat retaining portion 4 is installed on the upper surfaces of the interior bodies 3B, 3C corresponding to the temperature zones T2, T3. As a result, the temperature zones T1, T2, T3 are formed inside the exterior body 2, and the multi-temperature zone storage container 1 in which the article Q is held in an appropriate temperature zone is completed.

In the multi-temperature zone storage container 1 of the present embodiment described above, a plurality of interior bodies 3 having heat insulation are accommodated in the exterior body 2 having heat insulation and being portable. In order to vary the internal temperature, a first heat retaining portion 4 made of one type of cold storage material is provided above at least one of the plurality of interior bodies 3.
According to the above configuration, the carrying body 2 can be carried, so that it can be carried by an operator, or can be carried on a carriage or carrier in a single state or in a state of being stacked in a small number. Can be considered. In addition, the interior of the exterior body 2 is partitioned into a plurality of areas by the plurality of interior bodies 3, and the first heat insulation is provided above the at least one interior body 3 in order to vary the temperature inside each of the plurality of interior bodies 3. By providing the part 4, the interior of the interior body 3 including the temperature zone T <b> 1 formed from the interior of the interior body 3 that does not include the first heat retaining part 4 and the first heat retaining part 4 inside the exterior body 2. Two temperature zones T1 and T2 with a temperature zone T2 lower than the temperature zone T1 are formed. The exterior body 2 and the interior body 3 have heat insulation properties, and the first heat retaining portion 4 is provided above the interior body 3, thereby generating air convection due to a temperature difference inside each interior body 3. Is suppressed, and the temperatures of the temperature zones T1 and T2 are well maintained within a predetermined range. And with the size change of the interior body 3, the area of each temperature zone T1, T2 is freely and easily changed. Furthermore, since the 1st heat insulation part 4 consists of one kind of cool storage material, management of several cool storage materials like before becomes unnecessary.

  Therefore, according to the present invention, the selection range of the transport means is wide, and a plurality of temperature zones T1 and T2 are configured, and the temperatures of the temperature zones T1 and T2 are well maintained, and the zones of the temperature zones T1 and T2 are maintained. The multi-temperature zone storage container 1 that can easily change the size of the storage medium and facilitates management of the cold storage material is provided. Further, since the size of each temperature zone T1, T2 can be easily changed, the interior of the exterior 2 can be efficiently partitioned regardless of the amount of articles accommodated in each temperature zone. A plurality of temperature zones T1, T2 can be formed in one exterior 2 or as few exteriors 2 as possible, and can be transported while maintaining the quality and freshness of the article Q.

In the multi-temperature zone storage container 1 of the present embodiment, it is preferable that the thermal conductivity of the interior body 3 is 1.0 [W / m ² · K] or more and 12.0 [W / m ² · K].
According to the said structure, the heat insulation of the interior body 3 is ensured more reliably, and the partition which has higher heat insulation between each temperature zone T1, T2 is provided.
Moreover, in the multi-temperature zone storage container 1 of this embodiment, it is preferable that the heat transmissivity of the exterior body 2 is 0.5 [W / m ² · K] or more and 6.0 [W / m ² · K]. .
According to the above configuration, the effective thermal conductivity of the entire multi-temperature zone storage container 1 is more reliably ensured, and the interior of each interior body 3 is less susceptible to the environmental temperature outside the exterior body 2. The heat retention of the temperature zones T1 and T2 increases.

In the multi-temperature zone storage container 1 of the present embodiment, a lid 6 is provided on the upper part of the outer package 2, and the distance between the upper surface 4t of the first heat retaining part 4 and the bottom surface 6b of the lid 6 is preferably 3 mm or more. .
According to the above configuration, the temperature increase of the regenerator material of the first heat retaining unit 4 due to the thermal equilibrium between the first heat retaining unit 4 and the lid 6 is suppressed, and the inner product of the interior body 3 with respect to the inner product of the exterior body 2 is further secured. The

In the multi-temperature zone storage container 1 of the present embodiment, among the one or more interior bodies 3B, 3C having the first heat retaining portion 4, at least one interior of the at least one interior body 3C is provided with one kind of cold storage material. It is preferable that a heat retaining unit 10 is provided.
According to the above configuration, in the temperature zone T3 configured by the interior body 3C in which the first heat retaining portion 4 is provided above and the second heat retaining portion 10 is provided inside, the first heat retaining portion 4 is only on the upper side. The temperature is further lower than the temperature zone T2 configured by the provided interior body 3B. Accordingly, three temperature zones T1, T2, and T3 are formed inside the exterior body 2.

In the multi-temperature zone storage container 1 of the present embodiment, the interior body 3 preferably has a temperature display function that reflects the internal temperature.
According to the above configuration, since the interior body 3 has a temperature display function, the temperature zone can be easily identified just by looking at the inside of the exterior body 2.

In the multi-temperature zone storage container 1 of this embodiment, it is preferable that the exterior body 2 has a folded structure.
According to the said structure, the exterior body 2 is stored compactly by folding before and behind the accommodation of the accommodation thing Q, and the working efficiency at the time of carrying is improved.

The method for forming the multi-temperature zone storage container 1 of the present embodiment includes an interior body housing step of housing a plurality of interior bodies 3 made of a heat insulating material in an exterior body 2 having heat insulation and being portable. And a first heat retaining part installation step of installing a first heat retaining part 4 made of one kind of cold storage material above at least one or more interior bodies 3 among the plurality of interior bodies 3.
According to the said structure, by making the exterior body 2 portable, the choice of all the conveyance means, such as carrying by an operator or carrying on a trolley | bogie, a carrier, etc., can be considered. Further, the interior of the exterior body 2 is partitioned into a plurality of areas by the plurality of interior bodies 3, and the first heat retaining portion 4 is provided above the at least one interior body 3. Two temperature zones T1 and T2 of a temperature zone T1 comprised of the interior of the interior body 3 not provided with the heat retaining portion 4 and a temperature zone lower than the temperature zone T2 comprised of the interior of the interior body 3 provided with the first heat retaining portion 4 Can be formed. By using the exterior body 2 and the interior body 3 having heat insulation properties, the first heat retaining portion 4 is installed above the interior body 3 to suppress the occurrence of air convection due to the temperature difference inside each interior body 3. In addition, the temperatures of the temperature zones T1 and T2 can be well maintained within a predetermined range. And with the size change of the interior body 3, the area of each temperature zone T1, T2 can also be changed freely and easily. Furthermore, since the 1st heat insulation part 4 consists of one kind of cool storage material, management of several cool storage materials like before becomes unnecessary.
As shown in FIG.3 and FIG.5, if the 2nd heat insulation part 10 is provided also in the inside of at least 1 or more interior body 3C among the 1 or more interior bodies 3B and 3C which have the 1st heat insulation part 4, exterior will be provided. Three temperature zones T1, T2, T3 can also be formed inside the body 2.

  The multi-temperature zone storage container 1 according to the embodiment of the present invention has been described above. However, the multi-temperature zone storage container to which the present invention is applied is not limited to the above-illustrated embodiment, and is within the scope of the claims. Various modifications can be made within the scope of the gist of the present invention described in the above.

  For example, the number, size, and arrangement of the temperature zone formed in the exterior body 2 and the interior body 3 to be used, the first heat retaining part 4 and the second heat retaining part 10 are those illustrated in FIGS. It is not limited and can be changed freely. For example, even when three temperature zones T1, T2, and T3 are formed inside the exterior body 2, the arrangement order of the three temperature zones T1, T2, and T3 is not particularly limited and can be set freely.

1, 1A, 1B, 1C, 1D ... multi-temperature zone storage container 2 ... exterior body 3, 3A, 3B, 3C ... interior body 4 ... first heat retaining part 4t ... upper surface 6 ... lid 6b ... bottom surface 10 ... second heat retaining part

Claims (9)

A heat-insulating and portable exterior body contains a plurality of heat-insulating interior bodies,
A first heat retaining portion made of one type of cold storage material is provided above at least one of the plurality of interior bodies so as to vary the internal temperature of each of the plurality of interior bodies ,
The exterior body includes a wall portion and a bottom portion,
On the upper part of the wall part, a placement part on which the first heat retaining part is placed is formed,
A partition portion that suppresses the movement of the first heat retaining portion placed on the placement portion is erected at a predetermined position of the placement portion,
The interior body is a multi-temperature zone storage container that is an openable / closable cold bag made of at least a single layer or a plurality of layers of foamed resin sheets . A heat-insulating and portable exterior body contains a plurality of heat-insulating interior bodies,
A first heat retaining portion made of one type of cold storage material is provided above at least one of the plurality of interior bodies so as to vary the internal temperature of each of the plurality of interior bodies ,
The temperature zone configured inside the interior body arranged below the first heat retaining part is 0 ° C. or higher and 10 ° C. or lower,
The multi-temperature zone storage container having a thermal conductivity of 5.0 [W / m ² · K] or more and 12.0 [W / m ² · K] or less . The multi-temperature zone storage container according to claim 1 or 2, wherein the outer body has a thermal conductivity of 0.5 [W / m ² · K] or more and 6.0 [W / m ² · K] or less. A lid is provided on the top of the exterior body,
The multi-temperature zone storage container according to any one of claims 1 to 3, wherein a distance between an upper surface of the first heat retaining unit and a bottom surface of the lid is 3 mm or more. The 1st heat retention part WHEREIN: The 2nd heat retention part which consists of a cool storage material of the same kind as the said 1st heat retention part is provided in the inside of at least 1 or more of the said interior bodies. 5. The multi-temperature zone storage container according to any one of 4 to 4. The multi-temperature zone storage container according to any one of claims 1 to 5, wherein the interior body has a temperature display function that reflects an internal temperature. The multi-temperature zone storage container according to any one of claims 1 to 6, wherein the exterior body has a folded structure. Three interior bodies having heat insulation are accommodated in the exterior body having heat insulation and being portable,
In order to vary the internal temperature of each of the three interior bodies, the first heat retaining portion made of one kind of cold storage material is not provided above the first interior body among the three interior bodies, The first heat retaining portion is provided above the second and third interior bodies among the interior bodies,
A second heat insulating part made of the same type of cold storage material as the first heat insulating part is provided inside the third interior body,
The temperature zone configured inside the first interior body is 10 ° C. or more and 20 ° C. or less,
The temperature zone configured inside the second interior body is 0 ° C. or more and 10 ° C. or less,
The temperature zone configured inside the third interior body is -20 ° C or more and -15 ° C or less,
Thermal conductivity of the three interior bodies is 5.0 [W / m ² ・ K] or more 7.0 [W / m ² -K] The multi-temperature zone storage container which is the following. A method for forming a multi-temperature zone storage container according to any one of claims 1, 2, and 8,
An interior body housing step for housing a plurality of interior bodies having heat insulation properties in a portable exterior body having heat insulation properties,
Of the plurality of interior bodies, a first heat retaining part installation step of installing a first heat retaining part made of one type of cold storage material above at least one of the interior bodies;
A method for forming a multi-temperature zone storage container.

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