JP2018177311A - Cold insulated container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cold and heat insulating container capable of suppressing a change in internal temperature for a long period of time even when an external power source is not used or in an environment where an external power source cannot be used. SOLUTION: The cold and heat insulating container of the present invention has a storage portion for accommodating a cold and heat insulating material, and has an openable inner container having a heat insulating material and the inner container having the heat insulating material. The inner container is provided with an openable outer container, and the outer surface of the inner container and the inner surface of the outer container are arranged so as to face each other without a gap when the inner container is housed. A cold and heat insulating container in which a cold and heat insulating agent is arranged between the inner surface of the container and the cold and heat insulating material. [Selection diagram] Fig. 1

Description

  BACKGROUND OF THE INVENTION Field of the Invention The present invention relates to a cold storage / heat storage container for storing a cold storage / retaining material and for cold storage / warming.

  DESCRIPTION OF RELATED ART Conventionally, the cold preservation heat retention container which accommodates a cold preservation heat retention thing, and carries out cold preservation heat retention is known. For example, in the case of cold preservation, cold preservation is performed using a cold insulator to keep food or other cold matter to be kept cold, and a cold keeping warm container having a storage portion in which the cold matter is stored. In some cases, a cold storage agent is stored together with a cold storage material, and the cold storage material is cold stored using an endothermic phenomenon when the cold storage material undergoes a phase change.

  In such a cold storage and heat retention container, it is conceivable to dispose a heat transfer plate on the inner surface of the cold storage container so that the cold air of the cold storage agent can be efficiently transmitted to the cold storage and retention material. For example, in invention of patent document 1, while arrange | positioning a cold-storage agent on all the inner surfaces of a cold-storage container, arrange | positioning a heat exchanger plate on the surface of this cold-storage agent is considered.

  Further, the improvement technique is disclosed in Patent Document 2, in which the heat transfer plate is provided on at least the inner side surface of the inner side surface of the housing portion and the top surface by the lid portion, and on the inner side surface, only the upper end side Provided in

Furthermore, Patent Document 3 is a cold storage container having at least a metal inner cylinder container having a bottom surface and a side surface, and a metal outer cylinder lid having a top surface and a side surface, wherein the inner cylinder is A vacuum heat insulating portion formed of a vacuum double wall structure is provided in the bottom and side portions of the container, and in the top and side surfaces of the outer cylinder lid, respectively, and the outer cylinder lid is attached to the inner cylinder container. There is disclosed a cold storage container in which the inner cylindrical container and the vacuum heat insulating portion of the outer cylindrical lid overlap each other at the side surface portion of the cold storage container when covered and integrated.
Further, Patent Document 4 has a double shell structure of an outer container and an inner container, and a bottom support plate and an upper support plate having flexibility so as to prevent the inner container from moving in the inner container bottom and upper portions. In the inner container main body, a container for installing a side of a cold storage material, which has a shape that closely adheres to a temperature control target containing a cold storage material, is disposed on the side surface centering on the temperature control target. A container for installing a cold storage material of a shock absorbing and flexible shock absorbing material sandwiched between upper and lower surfaces containing a cold storage material between hard and non-deformable materials is disposed, and the upper surface is a temperature controlled object It has a structure in which a plate-shaped regenerator material covering all the upper surface is disposed, and arranged so that the temperature control object and the regenerator material can be taken in and out directly from above the inner container with the lids of the outer and inner containers opened. A cold insulated container is disclosed.
In addition, a cold storage container composed of a container body and a lid using a heat insulating material of foam synthetic resin such as polystyrene foam, urethane foam, etc. is characterized in that a cold storage material is attached to at least the entire inner peripheral surface of the peripheral wall of the container body. Patent Document 5 discloses a cold insulating container as described above.

JP 2004-43020 A JP, 2013-203461, A Utility model registration 3206726 gazette JP 2014-84176 A Japanese Utility Model Application Publication No. 61-151177

  In the cold storage container mentioned above, it may be difficult to maintain the internal temperature for a long time because the insulation performance is not sufficient. On the other hand, the cold storage means which maintains the internal temperature of a cold storage container for a long period of time, for example using a refrigerator and an external power supply etc. can be considered. However, in a place without a power source or in a space where a power source can not be used, there is a problem that a cold storage container using an external power source can not sufficiently exhibit the heat retention function.

  The present invention has been made in view of the above problems, and it is possible to suppress the change in the internal temperature for a long time even when the external power supply is not used or in an environment where the external power supply can not be used. Intended to provide a container.

  In order to achieve the above object, the cold and heat insulating container of the present invention has a housing portion in which a cold and heat insulating material is housed, and an openable inner container provided with a vacuum heat insulating material and an inner container are accommodated. And an openable outer container provided with a material, the outer container and the inner container of the inner container being disposed substantially facing each other with substantially no gap in the storage condition of the inner container, and the storage condition of the cold keeping material The container is characterized in that the container is a cold-held thermal container, wherein a cold-insulating thermal agent is disposed between the inner surface of the inner container and the cold-held thermal material.

  In the cold storage container according to the present invention, at least a part of the opening formed at one end of the inner container is disposed in the vicinity of the end of the outer container and is formed at the one end of the outer container. At least a portion of the opening may be located near the end of the inner container.

  In the cold preservation heat retention container of the present invention, the above-mentioned cold retention heat insulation agent may be laid without a crevice between the inner surface of an inner side container, and the cold preservation heat retention thing.

  In the cold preservation heat retention container of the present invention, the vacuum heat insulation material of the inner container and / or the vacuum heat insulation material of the outer container is a vacuum heat insulation material having at least one or more of glass wool, silica powder and urethane foam as a core material. It may be.

  In the cold insulation container according to the present invention, the vacuum insulation of the inner container and / or the vacuum insulation of the outer container comprises a plurality of vacuum insulators of substantially uniform thickness respectively, and the inner container and the outer container A plurality of vacuum heat insulating materials may be stacked at the bottom, and a half of the number of vacuum heat insulating materials stacked at the bottom may be stacked on the side walls of the inner and outer containers.

  In the cold preservation heat retention container of the present invention, the vacuum heat insulation material of the inner container and / or the vacuum heat insulation material of the outer container is composed of a plurality of vacuum heat insulation materials, and each end of the plurality of vacuum heat insulation materials is substantially It may be laminated so as not to overlap.

  In the cold storage container according to the present invention, the vacuum insulation of the inner container and / or the vacuum insulation of the outer container may be bent at the corners of the inner container and / or the outer container. In the cold storage container according to the present invention, the vicinity of the end of the inner container may be the bottom of the inner container and / or the vicinity of the end of the outer container may be the bottom of the outer container. In the cold preservation heat retention container of the present invention, the vacuum heat insulation material of the inner container and / or the vacuum heat insulation material of the outer container is disposed in a substantially L-shaped, U-shaped or U-shaped bent state It is also good. In the cold preservation heat retention container of the present invention, the end of the vacuum heat insulation material of the inner container and the end of the vacuum heat insulation material of the outer container adjacent to the vacuum heat insulation of the inner container are laminated so as not to overlap as a whole. May be In the cold preservation heat retention container of the present invention, the vacuum heat insulating material of the inner container and / or the vacuum heat insulating material of the outer container is composed of a plurality of vacuum heat insulating materials, and adjacent vacuum heat insulating materials do not overlap as a whole. May be laminated. In the cold preservation heat retention container of the present invention, the respective end parts of the vacuum heat insulating material are the respective peripheral parts of the vacuum heat insulation material, and the peripheral parts are laminated so that they do not match as a whole in the thickness direction of the vacuum heat insulation material. It may be done.

  According to the present invention, it is possible to provide a cold insulation container capable of suppressing a change in internal temperature for a long time even when an external power supply is not used or in an environment where the external power supply can not be used.

It is a perspective view which shows the cold-storage container which is one form of embodiment of the cold-storage thermal container of this invention, and is a perspective view which shows the relationship of the cold-storage agent surrounding the storage container of an inner side container and an outer side container, and an accommodation thing. The cold storage container of FIG. 1 WHEREIN: It is a perspective view which shows the accommodation relationship of an inner side container, an outer side container, and the storage container of a thing to be accommodated. It is a perspective view which shows the accommodation state of the cold-storage container of FIG. It is a front view of FIG. It is AA sectional drawing of FIG. It is a BB sectional view of FIG. It is the schematic which shows an example of arrangement | positioning of several heat insulating materials. It is a graph which shows the experimental result of an Example.

  Hereinafter, the embodiment of the cold storage / heat storage container of the present invention will be described by taking the cold storage container as an example with reference to the drawings, but the same configuration can be provided as a heat storage container. The present invention is not to be interpreted limitedly by the following embodiments.

The cold storage container 11 of the present embodiment, as shown in FIGS. 1 and 2, is a vacuum heat insulating material having an opening at one end having a storage portion 12a in which a storage container (sample storage box) 21 for storing a material to be stored is stored. And an outer container 13 made of a vacuum heat insulating material having an opening at one end having a housing portion 13a for housing the inner container 12 from the opening side. In the drawing, the inner container 12 and the outer container 13 both have bottoms 12b and 13b.
Further, in a state in which a plurality of plate containers 22 for storing a cold storage agent containing a cold storage agent are continuously laid along the inner surface side of the bottom portion 12 b of the inner container 12 and the inner surface side (inner wall) of the side wall The storage container 21 is accommodated in the inner container 12, and the inner container 12 is accommodated and held in the outer container 13 thereon.

  In the cold storage container 11 of the present embodiment, when the inner container 12 is stored in the outer container 13, the outer surface 12 c of the inner container 12 and the inner surface 13 c of the outer container 13 are disposed substantially facing each other without a gap. At least a portion of the outer surface 12 c of the inner container 12 and at least a portion of the inner surface 13 c of the outer container 13 may not be in contact with each other as long as no convection occurs. The inner container 12 may be accommodated in the outer container 13 with the outer surface 12 c of the inner container 12 and the inner surface 13 c of the outer container 13 in close contact (preferably with a gap of 0 mm) with almost no clearance. In this way, air can be prevented from entering between the outer surface 12 c of the inner container 12 and the inner surface 13 c of the outer container 13, and temperature change in the cold storage container 11 due to air convection can be suppressed.

  Further, in the cold storage container 11 of the present embodiment, at least a part of the opening 12a formed at one end of the inner container 12 when the inner container 12 is accommodated is in the vicinity of the end of the outer container 13 (for example, the inner surface of the bottom 13b) ) And at least a part of the opening 13a formed at one end of the outer container 13 is arranged near the end of the inner container 12 (for example, near the outer surface of the bottom 12b) Is preferred. Thereby, the penetration | invasion of air between the inner side container 12 and the outer side container 13 can be prevented, and the temperature change in the cold storage container 11 by the convection of air can be suppressed. Moreover, the area | region which the heat insulation raw material of the inner side container 12 and the heat insulation raw material of the outer side container 13 overlap overlaps, and it exists in the tendency for the heat insulation of the cold storage container 11 to improve.

  A vacuum heat insulating material is used in the cold storage container 11 of the present embodiment. It does not specifically limit as a vacuum heat insulating material which comprises the inner container 12 and / or the outer container 13, A well-known vacuum heat insulating material can be used. In particular, a vacuum heat insulating material having glass wool as a core material, for example, Vip-Ace (VIP-A, trade name: manufactured by Asahi Fiber Glass Co., Ltd.) is suitably used. In addition, as a core material of a vacuum heat insulating material, it is not limited to glass wool, For example, at least one or more of well-known arbitrary core materials, for example, glass wool, a silica powder, and a urethane foam, can also be used.

  In the cold storage container 11, a plate-shaped container 22a for storing a cold storage agent at an inner bottom portion among a plurality of cold storage containers 22 for storing a cold storage agent, which stores a cooling agent laid continuously along the inner bottom portion and the inner wall of the inner container 12. A step 22b is formed on the periphery thereof. Therefore, by assembling the end portion of the plate for cold storage container 22 of the side wall portion to the step 22b, it can be laid along the inner bottom portion and the inner wall of the inner container 12 without a gap. In addition, although a cold-preserving agent shall be continuously made and installed along the inner bottom part and inner wall of the inner side container 12, it is not necessary to make it completely continuous and to lay. For example, preferably, 90% or more, more preferably 95% or more of the total surface area of the inner bottom portion and the inner wall of the inner container 12 may be covered with a coolant.

The cold storage agent according to the present embodiment will be described. As a cold-preserving agent, a well-known thing can be used, without being restrict | limited in particular, It is preferable to select according to the target cold-retention temperature.
For example, a water-containing gel-like cold-preserving agent composition capable of maintaining the temperature of a material to be stored in a low temperature range of about 15 ° C. to 0 ° C. is known (Japanese Patent Application Laid-Open No. 8-325563).
Moreover, for example, dry ice which is solid carbon dioxide is known as a cold storage agent capable of maintaining the temperature of a material to be stored in a low temperature range of about -50 ° C to -20 ° C.
Furthermore, as a cold storage agent used in a very low temperature range such as −80 ° C. or less, it contains water and a solute containing lithium chloride and sodium chloride, and the content ratio of lithium chloride in weight conversion among the components of the solute That is the highest, which contains water and a solute containing lithium chloride and potassium chloride, and among the components of the solute, the content ratio of lithium chloride in terms of weight conversion is the highest, or with water, lithium chloride and sodium chloride And a solute containing one selected from the group consisting of potassium chloride, ammonium chloride and potassium nitrate, and among the components of the solute, the content ratio by weight conversion of lithium chloride is the highest (especially Application 2016-007002).

Next, the plate-shaped container for cold storage agent storage which concerns on this embodiment is demonstrated. The plate-shaped container for storing a cold-preserving agent according to the present embodiment seals and holds the cold-insulating agent according to the above-described embodiment.
Here, as what seals a cold-storage agent, laminated films, such as generally used nylon and polyethylene, may be sufficient, but since there is no low-temperature resistance in a very low temperature range of about -80 ° C, repeated use There are times when you can not bear.
In the case of repeated use, a container having low temperature resistance at -80.degree. C. formed of high density polyethylene film, polyimide film, high density polyethylene resin, polyimide resin, etc. which withstands use at -80.degree. Is suitable for sealing the

  Moreover, as a heat retaining agent, it is possible to use a known one without particular limitation, and it is preferable to select according to the target temperature of heat retention. It is preferable to select the heat retaining agent storage container also in accordance with the desired heat retention temperature.

3 to 6 show a state in which the inner container 12 and the outer container 13 are assembled.
In cold storage container 11, inner container 12 and outer container 13 are each formed of a plurality of vacuum heat insulating materials 15 (see FIG. 7) of substantially uniform thickness, and at the bottom of inner container 12 and outer container 13. It is formed by laminating the required number of vacuum heat insulating materials 15, and by forming a half of the vacuum heat insulating material 15 of the number of the bottom on the side walls of the inner container 12 and the outer container 13, the final The number of laminated layers of the vacuum heat insulating material 15 at the bottom is substantially equal to the number of laminated layers of the vacuum heat insulating material 15 of the side walls. As a result, the heat insulating properties in the thickness direction on the bottom side and the side wall side become almost equal, and the internal temperature of the cold storage container 11 can be made substantially uniform, and the change in the internal temperature can be suppressed for a long time. In the present invention, the substantially "uniform thickness" does not have to be a completely uniform thickness, and for example, in the range of about ± 5.0% with respect to the designed thickness. A thickness may be included as a tolerance, and a thickness in the range of about ± 3.0% may be included as a tolerance.

As a member or a device for housing the inner container 12 in the outer container 13 and firmly holding it, a binding and removable belt 31 attached to the outer container 13 with an adhesive, fusion processing, other members or devices is adopted ing.
A pair of holding fixtures 32 and 33 having a laterally long opening is attached to one end of the belt 31, and the other end of the belt 31 is inserted and the pair of holding fixtures 32 and 33 are wound around to make a strong one-touch operation. It can be locked.
Further, since the tapers are respectively formed at the opposite positions of the side end portions of the pair of holding metal fittings 32 and 33, the lock is easily released simply by swinging the end portion of the belt 31 to the left and right. It can be removed.

FIG. 7: is schematic which shows an example of arrangement | positioning of the several heat insulating material in the cold storage container of this embodiment. The part shown by the dotted-line ellipse is the edge part (periphery part) which is inferior to the heat insulation in the front side heat insulating material 15a. Here, the rear side heat insulating material 15b is disposed behind the front side heat insulating material 15a, and the central portion of the rear side heat insulating material 15b is superimposed on the end (peripheral part) of the front side heat insulating material 15a. Is stacked. This is a preferable embodiment in that the high heat insulation performance of the cold storage container 11 can be exhibited. As shown in FIG. 7, the peripheral edge (outline) of the front side heat insulating material 15 a and the peripheral edge (outline) of the rear side heat insulating material 15 b are preferably as a whole viewed from the thickness direction of the heat insulating material It may be laminated so as not to overlap or coincide. The peripheral portion of the front side heat insulating material 15a and the peripheral portion of the rear side heat insulating material 15b may be, for example, but not limited to, be laminated so as to intersect or be substantially orthogonal to each other. Furthermore, although not limited thereto, for example, the intersecting position may be substantially at the center of the rectangular rear side heat insulating material 15b.
In addition, the vacuum heat insulating material may be substantially bent in an L shape, a U shape, or a U shape at a corner or a corner of the inner container 12 and / or the outer container 13. This is a preferred embodiment in that it is possible to suppress the decrease in the heat insulation performance in the portion where the heat insulation is likely to be inferior.

In the present embodiment, a cold storage container having a configuration shown in FIG. 1 was used.
Vacuum insulation was applied to the bottom and sidewalls of the inner and outer containers. Specifically, two vacuum heat insulating materials were disposed on the side wall using VIP ACE (trade name: manufactured by Asahi Fiber Glass Co., Ltd.). Further, on the bottom side, four vacuum heat insulating materials and one spare vacuum heat insulating material were combined to arrange five vacuum heat insulating materials.
The inner dimension of the inner container of the cold container was 31.3 × 27.2 × 9.3 (cm).

  As a cold storage agent, a cold storage agent (STS2) manufactured by STS Laboratory Co., Ltd. was used. The component of the heat insulating agent is pure water, and a vinyl container (soft pack) was used as a plate-shaped container for containing the cold insulating agent. As shown in FIG. 1, the cold-preserving agent-storing plate-like container was disposed on the inner surface of the inner container so that ten sheets surrounded the sample storage box.

A sample storage box was stored as a cold storage container 21 in the inner container, and the cold storage temperatures of the six surfaces outside the sample storage box were measured to calculate the average cold storage temperature.
The temperature of the external environment in the experimental environment was about 12 to 23 ° C.

FIG. 8 is a graph showing the experimental results of this example.
As shown in FIG. 8, in the cold storage container of the present embodiment, the internal temperature is between 3 ° C. and 4 ° C. without an external power supply for a long period of 10 days from storing the sample storage box to opening it. It was possible to maintain, to realize a very high cooling effect, and to suppress the change of the internal temperature for a long time.

11 Cold Storage Container 12 Inner Container 12a Housing 12b Bottom 12c of Inner Container Outer Surface 13 of Outer Container 13 Outer Container 13a Housing 13b Bottom of Outer Container 13c Bottom 13c of Outer Container Inner Surface 15a of Outer Container Front Side Heat Insulating Material 15b Rear Side Heat Insulating Material 21 Cold Storage Material Storage Container 22: Coolant storage plate container 22a: Cold storage container container 22b at the bottom portion: Step difference 31 Belt 32, 33 Holding bracket

Claims (12)

An openable inner container having a vacuum heat insulating material and a storage portion for storing a cold storage material.
An openable outer vessel containing the inner vessel and provided with vacuum insulation;
In the accommodated state of the inner container, the outer surface of the inner container and the inner surface of the outer container are disposed substantially facing each other without gaps.
A cold / warm thermal container, wherein a cold / warm thermal agent is disposed between an inner surface of the inner container and the cold / warm thermal material in a storage state of the cold / warm thermal material.   In the storage state of the inner container, at least a part of the opening formed at one end of the inner container is disposed in the vicinity of the end of the outer container and of the opening formed at one end of the outer container The cold insulation container according to claim 1, wherein at least a part of the container is disposed near an end of the inner container.   The cold storage / warming container according to claim 1, wherein the cold storage / warming agent is laid without a gap between an inner surface of the inner container and the cold storage / retaining material.   The vacuum heat insulating material having at least one or more of glass wool, silica powder, and urethane foam as a core material, the vacuum heat insulating material of the inner container and / or the vacuum heat insulating material of the outer container is preferably used. The cold preservation heat retention container as described in any one of. The vacuum insulation of the inner container and / or the vacuum insulation of the outer container each comprising a plurality of vacuum insulation of substantially uniform thickness,
The plurality of vacuum heat insulating materials are stacked at the bottom of the inner container and the outer container,
5. The cold and heat insulation according to claim 1, wherein on the side walls of the inner container and the outer container, a half of the number of vacuum heat insulating materials stacked on the bottom is laminated. container.   The vacuum insulator of the inner container and / or the vacuum insulator of the outer container comprises a plurality of vacuum insulators, and the respective ends of the plurality of vacuum insulators are laminated so that they do not substantially overlap. The cold preservation heat retention container as described in any one of Claims 1-5.   The vacuum insulation of the inner vessel and / or the vacuum insulation of the outer vessel are folded at the corners of the inner vessel and / or the outer vessel. Cold insulated container.   8. The method according to any one of claims 2 to 7, wherein the vicinity of the end of the inner container is the bottom of the inner container and / or the vicinity of the end of the outer container is the bottom of the outer container. Insulated and insulated container as described in. 9. The vacuum insulation of the inner container and / or the vacuum insulation of the outer container are arranged in a substantially L-shaped, U-shaped or U-shaped manner. The cold preservation heat retention container of any one statement.   The end of the vacuum insulator of the inner container and the end of the vacuum insulator of the outer container adjacent to the vacuum insulator of the inner container are laminated so as not to overlap as a whole. The cold preservation heat retention container as described in any one of.   The vacuum insulator of the inner container and / or the vacuum insulator of the outer container comprises a plurality of vacuum insulators, and adjacent vacuum insulators are laminated such that their respective ends do not overlap as a whole. The cold preservation heat retention container as described in any one of Claims 1-10.   The respective end portions of the vacuum heat insulating material are the respective peripheral portions of the vacuum heat insulating material, and the respective peripheral portions are laminated so that they do not match as a whole when viewed from the thickness direction of the vacuum heat insulating material. Item 12. A cold and heat-retaining container according to any one of Items 6, 10, and 11.

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