JP2018179308A - Cold insulation system and cold storage body - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cold insulation system and a cold storage body, capable of improving a rotation rate of a cold storage plate, to realize smooth operation even in a case of reducing the number of cold storage plates.MEANS FOR SOLVING THE PROBLEM: A thin cold storage plate with freezable cold insulator includes a plurality of cold storage bodies 31 connected through a hinge, wherein when the cold insulator is frozen, the cold storage bodies 31 are frozen in an expanded state, to shorten a time required for freezing of the cold insulator. When the cold insulator is used, it is arranged in a cargo vehicle 22 to make the inside of the cargo vehicle 22 into a cold insulation state in transportation. When the cold insulator is used, a state where the cold storage plates 31 are overlapped to prolong a cold insulation time, and a state where the cold storage plate 31 is made into the expanded state to lower a cold insulation temperature can be used selectively.SELECTED DRAWING: Figure 1

Description

The present invention relates to a cold storage system that can achieve effective cold storage for an object using a cold storage plate, and a cold storage system that can be used for this cold storage system.

A cold storage plate using a cold storage agent is used in order to store a target object in a cold state for a certain period of time or to move the target.
With regard to this type of regenerative plate, those shown in Patent Documents 1 to 3 are known. The inventions disclosed in Patent Documents 1 to 3 relate to a cold storage plate in which a plurality of cold storage plates are connected so as to be folded and expanded, but the cold storage plates are formed in a small cold storage bag It is intended to be arranged and used. Therefore, no system has been proposed for freezing the internal cold storage agent. Even if these small cool storage plates are stored in a small freezer or the like, they are stored in small freezers without requiring much freezing time, and therefore, effective use of the freezing space is the primary purpose rather than freezing time. Moreover, in the invention which concerns on patent documents 1-3, it is presupposed that it uses, maintaining the state which has arrange | positioned the cool storage plate in the decided position in the cold storage bag. As a result, the cold storage bag shown by patent documents 1-3 is a thing in which the quantity of the target object which can be stored, cold storage temperature, and cold storage time were previously determined, and can not be changed. Therefore, it is necessary to determine the object to be stored in accordance with the conditions of the cold storage bag determined in advance.

In addition, although basket cars are widely used in today's physical distribution, it is the present condition that sufficient proposals have not been made for a cold storage system suitable for basket cars.

Patent No. 3074149 Patent No. 3074152 Japanese Utility Model Application Publication No. 3-56167

The conventional cold insulator had a certain thickness (20 mm or more) in order to prolong the cold storage time. As the thickness of the cold insulator increases, the freezing time required to freeze the cold insulator also increases. That is, the cooling time and the freezing time are in a proportional relationship.
If the freezing time is long, the rotation rate of the cold accumulating plate is deteriorated, and accordingly, it is necessary to prepare an extra cold accumulating plate and a freezing cabinet.

Therefore, the present invention is intended to propose a thin connected type cold storage agent.
Cold storage time becomes long by giving the whole thickness by using a cold storage plate repeatedly. When it freezes, it can be made thin and frozen in a short time by expanding a cold storage plate.

According to the present invention, a cold storage plate provided with a freezeable cold storage agent includes a cold storage body in which a plurality of cold storage plates are connected via a hinge, and when the cold storage agent is frozen, the cold storage body is frozen in a spread state and the cold storage plate is used Provided is a cooling system characterized in that it is possible to select and use a state of superposition and a state of expansion. It is desirable that the cold storage plate have a thickness of less than 20 mm.

A preferred freezer compartment used in the practice of the present invention is capable of suspending at least one of the regenerators from above. It is advantageous from the viewpoint of shortening the freezing time if the cold storage body is suspended in the unfolded state and the cold storage plates are placed in the freezing chamber while keeping the cold storage plates in a non-contact state. preferable. On the other hand, it is preferable that the said cool storage body can select and overlap the number of sheets which overlap the said cool storage plates in the case of use. Thereby, since the cool storage time by the cool storage plate can be lengthened as the number of stacked cool storage plates is increased from the spread state, it is possible to stack cool storage plates according to the change of the required cool storage time and the amount of luggage. By setting the number of sheets as overlapping, it is possible to obtain the most preferable cold storage state.

The present invention provides a regenerative body that can be applied to the cold storage system. The cold accumulating body is formed by connecting a plurality of cold accumulating plates in a stackable and deployable manner by a connecting portion. The cold storage plate is formed of a synthetic resin case provided with a handle portion and a storage portion for storing the cold storage agent, and the connecting portion can rotate the two cold storage plates at least 180 degrees. To connect to Then, in the unfolded state, a plurality of the cold storage plates are arranged side by side, and in the overlapping state, it is possible to select and overlap the number of the other cold plates on the one cold storage plate. It is configured. Therefore, freezing in the expanded state can shorten the freezing time more than freezing in the overlapped state, and the cold storage time by the cold storage plate can be extended as the number of stacked cold storage plates is increased. It is possible.

The present invention breaks through the proportional relationship between conventional cold storage time and freezing time, and provides a cold storage body that can realize long cold storage time and short freezing time with the same cold storage agent, and a cold storage system using this cold storage body It was possible to do.
In addition, as for cold storage temperature, if it is used in the expanded thin state, it cools more and if it is used in thick state, it becomes higher temperature, so various cold storage temperature zones are set by using the cold storage according to the present invention. be able to.

Explanatory drawing of the cold storage system which concerns on embodiment of this invention. The perspective view in the freezer compartment of the cool storage body of the same cold storage system. (A) is a front view and (B) is a side view which shows the cool storage body of the same cold storage system. The front view of the cool storage box (storing body attachment completed) of the same cold storage system. The graph which shows the change of the freezing temperature of the cool storage body which concerns on an Example and a comparative example. The graph which shows the change of the cold storage temperature of the cool storage body which concerns on an Example and a comparative example.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
The cold storage system according to this embodiment, as shown in FIG. 1, includes a freezer compartment 11, a cold storage cabinet 21 and a cold storage body 31, and provides optimal cold storage conditions for the object.

This cold storage system can be applied to a medium-sized cold storage system that can be applied to the rapidly developing individualized delivery in current distribution systems. Here, the medium-sized cooling system is not a large-sized transportation means such as a container car, but a small-sized transportation means such as a cold-packed bag which one person can carry down to the hand or shoulder. It is not a perfect cold storage system for In other words, it can not be used by large people, such as container cars and heavy trucks, which can not be lifted by a single person, but can not be used on large transportation means such as container cars or heavy trucks. It can be suitably applied to a system that is most suitable for a medium-sized cold storage system that is considered to be efficient.

Therefore, the freezer compartment 11 can be suitably used not a small freezer compartment like a home freezer-refrigerator, but a freezer compartment large enough to allow people to enter.
Further, even in the cold storage case 21, a cold storage room of such a size that a person such as a car can enter can be suitably adopted.

In such a medium-sized cold storage system, the electric refrigeration system has been generally used conventionally, but in the electric refrigeration system, since the supply of electricity is indispensable, the application range is It was limited. On the other hand, in the refrigeration system of this embodiment, the storage system 21 has sufficient size and ability to collectively freeze the regenerative body 31 without requiring electricity in order to maintain the temperature condition of the cooler 21. By adopting the freezing chamber 11, heat energy is intensively given to the heat storage body 31, thereby providing a cooling system with a high energy saving effect.

(About freezer room 11)
As described above, the freezing room 11 can be suitably used in a medium-sized freezing room, and specifically, a cooling room of a level at which a human upper body can be inserted without difficulty is suitably adopted. is there. As shown in FIG. 2, a plurality of cold storage bodies 31 are accommodated in the expanded state and in a state in which a space is placed between the cold storage bodies 31, as shown in FIG. 2. Specifically, a bar-shaped or shelf-shaped holding portion 12 is provided in the upper portion of the freezing chamber 11. The holding portion 12 can arrange a plurality of hanging portions 13 at an interval from each other, and the cold storage bodies 31 are positioned and arranged by the hanging portions 13. As a result, the hanging portions 13 are arranged in a non-contact state with each other, more preferably at an interval through which cold air can flow. At that time, the hanging portions 13 may be arranged vertically, but more preferably, the cold storage body 31 can be arranged by being suspended from above. More specifically, the suspending portion 13 can suspend and hold the cold storage body 31, and more specifically, a hook, a clip, a hanger, or the like that can hold the cold storage body 31 in the expanded state from above. It is suitable that the object can be removably supported from above.

(About refrigerator 21)
The cold storage container 21 may be a fixed type that can not be moved, but in this embodiment, as shown in FIG. 3, the movable cold storage container mounted on the basket 22 is It is carried out as 21.

The car 22 has wheels 23 such as casters and a car 24 disposed above the wheel. The basket 24 is disposed so as to surround the target luggage, and specifically, it is necessary to set wall surfaces arranged in three sides of the rectangular floor and one remaining rectangular floor. And a door surface arranged accordingly. The wall surface and the door surface may be fixed, but may be separable from one another or may be separately folded.

The heat insulating material 25 is disposed on the outside or inside of each surface of the cage 24. The heat insulating material 25 can be suitably selected and used as a heat insulating material that can be suitably applied to a cold storage case, such as a foam material such as expanded polystyrene or a vacuum heat insulating material.
The basket 24 is most preferably arranged on all sides (ie, six sides) of the rectangular parallelepiped that constitutes the storage space for the object of the basket wheel 22 (in other words, the cold storage space). There may be a place where is not placed. For example, it may be provided on the above three wall surfaces, may be provided on only the two left and right wall surfaces, or may be provided on a ceiling surface.

The cool storage body 31 is arrange | positioned in this cold storage space. Although it is most appropriate that the cool storage body 31 is disposed along the heat insulating material 25, preferably in a state of being in contact with the thermal insulation material 25, between the cold storage plate 33 and the heat insulating material 25 that constitute the cool storage body 31. There may be a gap.
The cold storage container 21 is provided with an arrangement member 26 for detachably arranging the cold storage body 31 at a predetermined position. The placement member 26 is embodied as a belt for suspending the regenerator 31 in this example, and the storage body 31 is suspended from the heat insulating material 25 in the basket 22 by the belt. It is desirable that the belt be provided with a connector such as a buckle so that the cold storage body 31 is detachably suspended. Although not shown, the placement member 26 may be implemented as a framework provided along the heat insulating material 25. Also, it may be used as a bar or a grid that constitutes the framework of the cage 24, and more specifically, it may also be used as a pipe material or a bar material that composes the cage 24.

The amount of the regenerator 31 can be determined in accordance with at least one condition of the amount of the object, the required cooling temperature, and the required cooling time. Further, even in the form of arrangement, a form of being suspended by the arrangement member 26, a form of being disposed in a state in which a plurality of cold storage plates 33 are superposed, a form of being disposed in a state of being placed on an object Various forms can be adopted.

(About the cold storage 31)
As shown in FIGS. 2 and 3, the cold storage body 31 is a plurality of (four in the illustrated example) cold storage plates 33 connected by the connecting portion 32 so as to be capable of being superimposed and developed. In the cold storage space of the cold storage container 21, the cold storage plate 31 is stacked or expanded according to at least one condition of the amount of the object to be cold stored, the required cold storage temperature, and the required cold storage time. It is configured to be able to be selected and arranged.

Specifically, as shown in FIG. 4, each cold storage plate 33 is formed of a synthetic resin case provided with a handle portion 34 and a storage portion 35. The storage unit 35 stores a cold storage agent of solid or liquid (including sol or gel). The heat insulating agent may be divided into a plurality of parts or may not be divided. Moreover, you may provide the opening part 36 for inject | pouring and pouring out the storage part 35 to a cold-storage agent. It is appropriate that the handle portion 34 penetrates the case in the thickness direction and that a person can insert and hold a hand, and it is preferable that the handle portion 34 be provided at the end of the cold storage plate 33. The through hole may not be a through hole as long as it has an easy-to-hold shape, and may not be provided at the end of the case. The number of handle portions 34 may be one from the viewpoint of increasing the area of the storage portion 35, but two or more may be provided.
The shape of the cool storage plate 33 shown in the figure is a rectangle which is vertically long in a plan view, but it may be a square or a circle depending on the case of another polygon.

The cold storage plates 33 are connected by the connecting portion 32 so as to be capable of rotating at least 180 degrees. Specifically, concave portions are formed at the four corners of the cold storage plate 33, the through holes 37 are provided in the respective concave portions, and the ring-like connecting portion 32 is passed through the through holes 37 to make the adjacent cold storage plates 33 It is connected rotatably. In the unfolded state, the plurality of cold storage plates 33 are disposed on a straight line. The arrangement structure of the cold storage plates 33 may be linear or cross-shaped or L-shaped, but if considering the storage state in the freezing chamber 11 and the arrangement state in the cold storage container 21, the linear configuration Is most appropriate.

These cold storage plates 33 are configured such that all the other cold storage plates 33 can be stacked on one cold storage plate 33 in the overlapping state. In the case of connecting linearly, the connecting portions 32 are stacked in a zigzag manner so that the connecting portions 32 are alternately positioned to the left and right. Although it is preferable that the shape and size of the cold storage plate 33 be the same in terms of the arrangement in the freezing room 11 and the cooler 21, the portability, the productivity, etc., the cold storage plates 33 having different shapes and sizes are It is also possible to connect.

The connection portion 32 can be appropriately selected and adopted, such as a hinge structure with a pin or concavo-convex fitting, or a bendable material such as a soft synthetic resin. The connecting portion 32 may be at the center or the like in the thickness direction of the cool storage plate 33, but when the two cool storage plates 33 to be connected overlap, it should be disposed near the contact surface. It is preferable in that it can be well folded regardless of the thickness of 33. Therefore, in the case of the zigzag folding, the connection portions 32 are provided alternately at opposite positions in the thickness direction. Moreover, it is preferable that the connection part 32 is provided with a detachable structure, and by making it attachable / detachable, the cool storage plate 33 can be increased / decreased, and the optimal number of cool storage plates 33 is adopted according to a use or a scale. Can.

It is preferable that the handle portions 34 of the respective cold storage plates 33 be disposed at positions where the handle portions 34 of the cold storage plates 33 overlap with each other in the overlapping state. When the shape and size of the cold storage plate 33 are the same, the handle portion 34 is arranged at the same position in each cold storage plate 33, and therefore, in the case of overlapping in a serpentine shape, adjacent one sandwiching one connecting portion 32 By arranging cool storage plates 33 that match each other in the opposite direction (by making the upper and lower directions alternately different), when the cool storage plates 33 are stacked on the serpentine fold, the handle portion 34 is positioned at the same position. , Can be held through the palm of the handle portion 34 of all the cold storage plates 33. Moreover, in the example of FIG. 2, FIG. 3, in the cool storage plate 33 of the upper end, the handle part 34 comes in the upper part, and in the cool storage plate 33 of the lower end, the handle part 34 comes in the lower part. When the cold storage plate 33 is folded in two and carried, the palm can be held by the handle portion 34 of the two cold storage plates 33.

The thickness of the cold storage plate 33 is preferably as thin as 5 mm or more and less than 20 mm, and more preferably about 10 to 15 mm. If the thickness of one cold storage plate 33 is too small, the amount of the cold storage agent may be too small, and a sufficient cold storage effect may not be obtained. On the other hand, if the thickness of the cold storage plate 33 is too large, the width of the adjustment of the cold storage time and the width of the adjustment of the cold storage temperature at the time of stacking may be narrowed. Further, the degree of adjustment of the cold storage time and the width of adjustment of the cold storage temperature increase in freedom as the number of the cold storage plates 33 used increases. Therefore, two or more sheets can be changed and implemented, for example, four sheets, six sheets, eight sheets or more according to the necessity.

(System operation)
An operation example of the cold storage system according to this embodiment is shown with reference to FIG. Taking a home delivery service as an example, the cold insulator of the cold storage body 31 is frozen in the freezing room 11 provided in the distribution center 41. At that time, the cold storage body 31 is in the unfolded state and suspended in the freezing chamber 11. Specifically, by using the handle portion 34 of the topmost cold accumulating plate 33, it is suspended from the suspending portion 13. As described above, since the handle portions 34 are provided at a distance from each other, specifically, they are provided at a distance larger than the thickness of the cold storage plate 33, the suspended cold storage plates 33 There will be space between them. As a result, the regenerative body 31 is frozen in the state of the largest surface area, and a space is formed between the regenerative plates 33, so that cold air is uniformly passed through the surface of each regenerative body 31, so the efficiency is the most efficient. Cooling effect can be obtained, and freezing in a short time is possible.

Next, the frozen cool storage body 31 is disposed inside the refrigerator 21 installed in the basket car 22. At that time, the cold storage body 31 is in the unfolded state and is suspended along the heat insulating material 25 of the cold storage 21. Specifically, the handle portion 34 of the topmost cold accumulating plate 33 is used to suspend from the upper side of the cage 24. In addition, according to the cold storage time calculated | required, cold storage plates 33 can also be accumulated and arrange | positioned, Furthermore, cold storage time can also be changed by adjusting the number of sheets of the cold storage plate 33 to pile up.

The number of storage units 31 used and the form of superposition are changed according to the amount of the target 10 stored in the cooling box 21, the required cooling temperature, and at least one of the required cooling times. be able to.
When the cool storage bodies 31 are arranged in the unfolded state, the surface area of the whole is increased, so the cold storage temperature per cold storage body 31 is lowered, but the cold storage time is shortened. By stacking the cold storage plates 33 on two, three, and four sheets, the surface area of the whole decreases, so that the cold storage temperature becomes high, but the cold storage time becomes long. In addition, in cold storage temperature, it can adjust also with the kind of cold-storage agent used.

The arrangement of these regenerators 31 can also be changed during transfer. In the case of a home delivery service, at the start of home delivery, the delivery object (ie, the target object 10) is loaded almost to the full storage capacity of the car 22 and this is loaded on a truck 42 or the like. It is arranged along the inner wall surface of the basket car 22 in the unfolded state. In such a deployed state, the cooling time becomes short. However, when the delivery of the home delivery reaches the middle, the quantity of the object 10 is also halved, so from the state where the cold storage body 31 is suspended at that stage, the cold storage plates 33 are partially overlapped or Changing the whole will extend the cooling time. Thus, in the present system, according to the amount of the target 10 stored in the cold storage container 21, the required cold storage temperature, and the form of the cold storage body 31 according to at least one of the required cold storage time conditions. Can be changed on the way.

In addition, since cold storage time can be predicted according to calculation and operation results, the surplus cool storage body 31 is frozen in the freezer room 11 installed in the delivery center etc. during delivery of the delivery service, and the delivery center is The delivery vehicle can be fully operated by replacing the cold storage body 31 in the returned delivery vehicle with a frozen cold storage body 31 or preparing a new basket car 22 equipped with the frozen cold storage body 31 it can. Moreover, the thickness of the cold storage body 31 can be reduced and frozen in the developed state, so that the time required for freezing can be shortened, so that the total amount of cold storage bodies 31 to be held by the establishment can be reduced.

As described above, the conditions for cold storage are not limited to the courier service, but in the present system, the operation of a highly efficient, energy-saving storage body according to the required conditions such as the type and amount of the target Is possible.

(Summary of the embodiment)
In the embodiment described above, a cold storage plate provided with a freezeable cold storage agent, a cold storage body obtained by connecting a plurality of the cold storage plates, and the cold storage body can be stored, and the cold storage agent of the cold storage plate can be frozen A cold storage system comprising a room, the cold storage body, and a cold storage for storing an object to be cooled by the cold storage body.

The cold accumulating body is formed by connecting the cold accumulating plates to one another so that at least two of the cold accumulating plates are stacked and can be developed.
The freezer compartment includes a holder capable of positioning and arranging the regenerative body.
The holding unit is capable of shortening the freezing time by arranging each of the plurality of cold storage bodies in the unfolding condition and in a state in which the cold plates are in a non-contact state. It is configured.
And, according to the amount of the object stored in the cold storage case, the required cold storage temperature, and at least one condition of the required cold storage time, whether or not to expand the cold storage plate and the number of overlapping are selected And since it can be stored in the said cold storage, cold storage time and cold storage temperature can be controlled.

The cold storage body is formed by connecting the cold storage plates to each other such that a plurality of cold storage plates are arranged side by side in the unfolded state, and all the other cold plates are placed on one cold storage plate It can comprise so that it can be made into the state which accumulated the said cool storage plate. As a result, it is possible to shorten the freezing time more than freezing in the stacked state by freezing the cold storage body in the expanded state, and the cold storage by the cold storage plate is increased as the number of stacked cold storage plates is increased. The time can be extended.

The holding portion of the freezing chamber includes a plurality of suspending portions capable of suspending and holding one of the cool storage bodies from above. The respective suspending portions are arranged at an interval from each other, and the cold storage body is suspended by the hanging portion in the unfolded state, so that the cold plates are kept in a non-contact state with each other. It can be arranged indoors.

The present invention provides a regenerative body that can be applied to the cold storage system. The cold accumulating body is formed by connecting a plurality of cold accumulating plates in a stackable and deployable manner by a connecting portion. The cold storage plate is formed of a synthetic resin case provided with a handle portion and a storage portion for storing the cold storage agent, and the connecting portion can rotate the two cold storage plates at least 180 degrees. To connect to Then, in the unfolded state, a plurality of the cold storage plates are arranged side by side, and in the overlapping state, it is possible to select and overlap the number of the other cold plates on the one cold storage plate. It is configured. Therefore, freezing in the expanded state can shorten the freezing time more than freezing in the overlapped state, and the cold storage time by the cold storage plate can be extended as the number of stacked cold storage plates is increased. It is possible.

In addition, although a cool storage body can be implemented with various forms, for example, in the said piled state, the said handle parts of each said cool storage plate are arrange | positioned in the position which overlaps, and all the handle parts It is also desirable to be able to hold all the cold storage plates with one hand by passing the hand.

Moreover, although the said cold storage can be implemented by various forms, it can implement as what was provided, for example in a basket car. The basket car includes a basket disposed around a load, and a wheel disposed below the basket, and the refrigerator includes a heat insulating material disposed along the basket, and the heat insulating material The enclosed internal space may be a cold storage space.

Examples are given below to enhance the understanding of the present invention, but the present invention should not be understood as limited to these examples.

The cold storage plate 33 shown in FIG. 4 was made of a synthetic resin having a thickness of about 1 mm, and a cold storage agent was injected into this. The size of the cold storage plate 33 was 315 mm × 210 mm × 12 mm.

As a comparative example, the size of the cold storage plate 33 is set to 315 mm × 210 mm × 30 mm.
The quantity of the cold-preserving agent injected | poured into one regenerator was Example 500g and Comparative Example 1500g.

The cold storage plates of the freezing test example and the comparative example were placed in a freezing room with a set temperature of -25.degree. C., and the temperature change of the cold storage body with the passage of time was measured.
The results are shown in FIG. As apparent from FIG. 5, while the cold storage of the example reached the freezing temperature in about 90 minutes, the cold storage of the comparative example reached the freezing temperature in a time exceeding about 180 minutes. It was confirmed that the cold storage of the example can be frozen in half or less of the time of the cold storage of the comparative example.

The cold storage plate of the cold storage test example and the comparative example is disposed in a basket car as shown in FIG. 3, and the basket car is disposed in a refrigerator compartment at a set temperature (denoted as outside temperature in FIG. 6) 5 ° C. The temperature change in the basket car with the passage of time was measured, and the result is shown in FIG.

The total amount of the heat insulating agent was made to be 8000 g in both the example and the comparative example. Specifically, in the embodiment, a total of 16 cold storage plates (containing 500 g of a cold insulating material per sheet) are used, and as shown in FIG. Two sets were arranged on the left and right sides in the car. In the comparative example, a total of six cold storage plates (average 1333 g of cold storage agent was used per sheet) were used, and a set of three longitudinally arranged sheets was arranged as one set on the left and right sides in the basket car. As apparent from FIG. 6, while the cold storage temperature of -20.degree. C. was reached in the cold storage body of the example, the cold storage temperature of -10.degree. C. higher by 10.degree. C. in the cold storage body of the comparative example. Stopped. For example, it has been confirmed that the cold storage of the example can be transported by maintaining a cold storage temperature of -20.degree. C. which can not be melted even by ice cream, for example, with a refrigerator-equipped vehicle without a freezer without using dry ice.

DESCRIPTION OF SYMBOLS 11 Freezer room 12 Holding | maintenance part 13 Suspension part 21 Cool storage 22 Car 23 Wheel 24 Basket 25 Heat insulation material 26 Arrangement member 31 Regenerator 32 Connection part 33 Storage plate 34 Holding part 35 Storage part 41 Distribution center 42 Truck

Claims (5)

A plurality of cold storage plates provided with a freezeable cold storage agent including a plurality of cold storage bodies connected via a hinge, wherein the cold storage body is frozen in the unfolded state when freezing the cold storage agent and the cold storage plates are stacked when in use; A cold storage system characterized in that it can be selected and used in an expanded state. The cold storage system according to claim 1, wherein the cold storage plate has a thickness of less than 20 mm. There is provided a freezing chamber capable of suspending at least one of the cold accumulating bodies from above, and the cold accumulating bodies are suspended in the unfolded state, thereby keeping the cold accumulating plates in a non-contact state, into the freezing chamber. The cold storage system according to claim 1 or 2, which is configured to be frozen in the arranged state. The cool storage body can select and stack the number of stacks of the cool storage plates, and can increase the cool storage time by the cool storage plates as the number of stacks of the cool storage plates is increased from the spread state. The cold storage system according to any one of claims 1 to 3, characterized in that A plurality of cold storage plates are connected by a connecting portion in a stackable and deployable manner;
The cold storage plate is composed of a synthetic resin case provided with a handle portion and a storage portion for storing the cooling agent.
The connecting portion is configured to connect two of the cold storage plates so as to be able to rotate at least 180 degrees,
In the unfolded state, a plurality of the cold accumulating plates are arranged side by side, and in the overlapping state, it is possible to select and overlap the number of the other cold accumulating plates on the one cold accumulating plate.
By freezing in the expanded state, the freezing time can be shortened rather than freezing in the overlapped state, and the cold storage time by the cold storage plate can be lengthened as the number of stacked cold storage plates is increased. A cold storage characterized in that it is configured.