JP3534994B2 - Insulated container - Google Patents

Description

Description: BACKGROUND OF THE INVENTION [0001] 1. Field of the Invention [0002] The present invention relates to a heat insulating container for storing foods and the like at a predetermined low or high temperature. [0002] As an example of a conventionally used insulated container, a cold storage container used for storing or transporting fresh foods and the like is known. Such a cold storage container generally has a structure in which a heat insulating structure lid is put on a container body of a heat insulating structure, and a cold storage agent sealed in a packaging material is stored in a storage portion provided in the lid. A vent hole is provided on the side surface, and the inside of the container body is circulated through the vent hole to cool the inside thereof (for example, Japanese Utility Model Publication No. 7-857 and Japanese Patent Publication No. 7-29660). Gazette,
Utility Model Registration No. 3037428). [0003] The conventional cold storage container as described above is designed to store the regenerator enclosed in one bag-like packaging material in one storage portion. If the lid is stored vertically in the freezer when freezing the cold storage agent, the cold storage agent moves to a lower position together with the packaging material, so that the cold storage agent may be frozen while being biased to a part of the storage unit. . When such an offset occurs, a part of the inside of the container main body is intensely cooled, and the other part is weakly cooled, so that there is a problem that stable cooling cannot be performed. For this reason, conventionally, when the lid is placed in a freezer to freeze the regenerator, it is necessary to store the lid in a freezer in a horizontal flat state, and store the lid vertically or diagonally. There was inconvenience that could not be done. The same can be said for not only the cold storage container but also the heat storage container in which the heat storage agent is stored inside the lid. Accordingly, the present invention restricts the movement of a latent heat agent such as a cold storage agent or a heat storage agent inside the lid,
It is an object of the present invention to eliminate bias of a latent heat agent and also to facilitate handling of a lid. [0006] In order to solve the above-mentioned problems, the present invention comprises a container body having a heat-insulating structure and a lid having a heat-insulating structure. In a heat insulating container containing a latent heat agent such as a cold storage agent and a heat storage agent, a seal groove is provided in the packaging material for the latent heat agent to partition the interior into a plurality of packaging small chambers, and the latent heat agent is provided in each of the packaging small chambers. And the protrusion provided on the storage portion is fitted into the seal groove, and the packaging material is sandwiched between the protrusion and the storage portion. [0007] The storage section is constituted by a lower lid member of the lid and a lid intermediate member provided on the upper surface of the lid lower member. Is formed, the packaging chamber of the packaging material is stored in the storage chamber with a required gap, and the sealing groove is sandwiched by the ridge and the lid lower member. A configuration in which the gap formed by the lower member and the lid intermediate member is filled with a heat insulating material can be employed. [0008] Embodiments of the present invention will be described below with reference to the accompanying drawings. The insulated container shown in FIG. 1 is used as, for example, a container for transporting foodstuffs for school lunch, and is composed of a container body 1 and a lid 2.
A clasp 3 is provided on the upper part of both side surfaces of the cover 2 and a handle 4 is provided below the clasp 3, and the clasp 3 is hung on the lid 2 to be locked. In the container main body 1, a peripheral member 6 is fixed to the upper peripheral edge of the outer container 5, and the upper edge of the inner container 7 housed at a predetermined interval inside the outer container 5 is attached to the peripheral member. 6 is covered. The space between the outer container 5 and the inner container 7 on the side wall and the bottom wall of the container body 1 is filled with a heat insulating material 8 such as urethane foam, so that the container body 1 has a heat insulating structure. The lid 2 is composed of an upper lid member 9, a lower lid member 11, and a lid intermediate member 12 attached to the upper surface of the lower lid member 11. They are abutted and fixedly integrated. As shown in FIGS. 1 and 2, the lower lid member 11 has a dish shape, and has an outer flange 14 formed at the upper end of a lower side wall 13. Is formed. The peripheral member 6 of the container body 1 is
Are fitted. As shown in FIGS. 1 and 2, the lid intermediate member 12 is formed in a downwardly facing dish shape and has a lower side wall 16.
An outwardly facing collar 17 is formed at the lower end of the plate, and a ridge 18 that intersects in a grid pattern on the bottom surface of the dish is formed at the same height as the side wall 16. The lid intermediate member 12 has a collar 17 temporarily fixed to the lid lower member 11 with a gum tape or the like, and a storage portion 19 is formed between the lid intermediate member 12 and the lid lower member 11. The storage section 19 is divided into a required number of storage chambers 21 by the ridges 18. As shown in FIG. 2, the polyacrylic acid-based regenerator 22 accommodated in the accommodating portion 19 is sealed in a flat rectangular bag-like packaging material 23 formed of a plastic film. You. In addition to the cold storage agent 22, the inside of the above-mentioned packaging material 23 has a small amount of gas, for example, an inert gas such as nitrogen gas, in order to reduce a volume change inside the packaging material 23 when the cold storage agent 22 expands. By sealing the gas, the fatigue resistance of the packaging material can be improved. The above-mentioned wrapping material 23 is made of the above-mentioned lid intermediate member 12.
A seal groove 24 is formed at a position corresponding to the ridge 18 of
The inside of the packaging material 23 is partitioned into a required number of small packaging chambers 25 by the sealing grooves 24, and the cold storage agent 22 is sealed in each small packaging chamber 25. The seal groove 24 has a deep portion at which the ridge 18 is fitted, and the wrapping material 23 at the seal groove 24 is sandwiched between the ridge 18 and the lid lower member 11. The portion of the small storage compartment 21 for the regenerator 22 has a gap 26 for providing a margin for volume expansion of the regenerator 22 during freezing. The gap surrounded by the upper lid member 9, the lid intermediate member 12 and the lower lid member 11 is filled with a heat insulating material 27 such as urethane foam, so that the lid 2 has a heat insulating structure. The ridges 1 formed on the lid intermediate member 12
Numeral 8 denotes a plurality of packaging materials 2 formed in parallel as shown in FIG.
The third seal groove 24 may also be formed in parallel with a plurality of the protrusions 18 in accordance with the protrusions 18. The refrigerating container according to the embodiment is configured as described above. Prior to using the refrigerating container, the lid 2 is removed from the container body 1 (see the two-dot chain line in FIG. 1), and the refrigerating agent 22 is frozen and solidified in a freezer. . In this case, even if the lid 2 is placed in the freezer with the lid 2 in the vertical position, the movement of the packaging material 23 is limited by the clamping force of the ridge 18, so that the regenerator 22 moves inside the small packaging chamber 25. Just do it. The volume expansion of the regenerator 22 during freezing is absorbed by the gap 26 in the storage compartment 21. When the freezing of the regenerator 22 is completed as described above, the lid 2 is placed over the container body 1 containing food and other items, and the clasp 3 is hung for storage or transportation. Cool storage agent 22
Absorbs the heat of fusion via the packaging material 23 and the lower lid member 11 to cool the inside of the container body 1. The lower lid member 11 may be provided with an air hole communicating with the storage chamber 21, but in order to prevent the packaging material 23 from being damaged and the cold storage agent 22 from leaking into the container body 1,
It is desirable to adopt a structure in which no air hole is provided in the lower lid member 11 as in the above embodiment. The packaging material 23 for the regenerator 22 includes
The plastic film bag as described above is used for the lower lid member 11.
Although it has good adhesiveness to heat and good thermal conductivity, a plastic molded case may be used. Further, the upper lid member 9 and the lower lid member 11 may be made of metal having good thermal conductivity. Although the above description has been made of the cold storage container using the cold storage agent 22, it can be used as a heat storage container using a heat storage agent instead of the cold storage agent 22. As described above, the heat insulation container of the present invention
A latent heat agent such as a cold storage agent or a heat storage agent is sealed in a packaging chamber partitioned by a seal groove, and the seal groove portion is clamped by a ridge of a storage portion provided inside the lid. Even if the lid is placed vertically in a freezer or a heat storage box during heating, the bias of the latent heat agent is small, and the latent heat agent is uniformly distributed and stored inside the lid. Therefore, when the lid is stored in a freezer or a heat storage box, there is no restriction on the direction thereof, so that the handling is convenient, and the inside of the container body can be cooled or heated uniformly. Further, since the latent heat agent is sandwiched by the ridges together with the packaging material, there is no sound caused by the movement and the packaging material can be prevented from being damaged.

[Brief description of the drawings] FIG. 1 is a sectional view of an embodiment. FIG. 2 is a partially exploded perspective view of the same. FIG. 3 is a partially exploded perspective view of another embodiment. [Explanation of symbols] 1 container body 2 lid 3 Clasp 4 Toride 5 outer container 6 Peripheral members 7 Inner container 8 Insulation 9 Upper lid member 11 Under lid member 12 Lid intermediate member 13 Side wall 14 brim 15 Lock groove 16 Side wall 17 brim 18 Ridge 19 Storage section 21 storage compartment 22 Cool storage agent 23 Packaging materials 24 Seal groove 25 Packaging room 26 gap 27 Insulation

Continued on the front page (56) References Japanese Utility Model Sho 57-172755 (JP, U) Japanese Utility Model Sho 64-35381 (JP, U) Japanese Utility Model Hei 1-176082 (JP, U) (58) Fields surveyed (Int .Cl. ⁷ , DB name) F25D 3/00

Claims (1)

(57) [Claims 1] A container comprising a container body having a heat insulating structure and a lid having a heat insulating structure. In a heat insulating container containing a latent heat agent, a sealing groove is provided in the packaging material for the latent heat agent to partition the interior into a plurality of packaging chambers, the latent heat agent is sealed in each of the packaging chambers, and the lid is placed on the lid. Member and lower lid member and lower lid
And a lid intermediate member attached to the upper surface of the material.
The storage section described above is constituted by the above-mentioned lid lower member and the lid intermediate member.
A protrusion is provided on the lower surface of the lid intermediate member so that a plurality of storage
A chamber is formed and the packaging chamber for the packaging material is placed in the storage chamber.
It is stored with a necessary gap, and the seal groove is aligned with the ridge.
And the seal groove part as described above.
Between the ridge and the lower member, and the upper member and the lid
Insulation material in the gap formed by the lower member and the lid intermediate member
Is filled, and the upper lid member and lower lid member are abutted and fixed.
An insulated container characterized by being integrated .