JPS6193067A - Cooling vessel - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a cooling container with a simple structure that maintains an excellent cold storage function for a long period of time.

[Prior art 1] Dry ice is solid carbonic acid with a vapor pressure of 1 atm, -78.5°C, and has been widely used as a refrigerant for a long time because it vaporizes directly without passing through a liquid phase. Not only does it have a high rate of vaporization expansion, but when the object to be cooled is food, the generated carbon dioxide gas can damage tissue fiber cells, so care must be taken when handling it.

Recently, a type of cooler has been proposed in which dry ice is stored in the lid of a bag and kept cool through a metal plate directly below it. This structure has a carbon dioxide gas discharge hole in the storage part, which improves the structure for handling dry ice as described above, but the sublimation rate of the dry 7' chair is fast, so it may take a long time. There was a problem that it was not possible to maintain a sufficient cold retention effect over a long period of time, and the cold retention function disappeared after 4 to 5 hours.

[Object of the present invention] This invention improves the problems of the conventional structure described above.

To provide an improved cooling container that can maintain even stronger cold retention and a sufficient cold retention effect for a long time.

[Structure and operation of the present invention] The figures illustrate the cooling container of the present invention, in which FIG. 1 is a side sectional view, and FIG. 2 is a partially cutaway side view of direction A in FIG. 1.

In the figure, l is the container body, and 2 is km, which is hinged to the container body 1 so as to be openable and closable. The container body l and the top lid 2 are
For example, it is composed of an exterior casing 3 made of polypropylene resin and an inner layer 4 of a heat insulating material such as foamed polystyrene resin. The inner space of the upper lid 2 is provided with a storage area 7 having a plurality of gas vent holes 5 in the upper wall and a suitable holding plate 6 attached to the lower surface. The holding plate 6 is made of an air-permeable material such as porous plastic or wire mesh, and the upper half of the upper a2 is opened with a hinge 8 (indicated by a dotted line) as shown in FIG.

It is preferable that at least a portion of the opening be formed into an openable structure.

In the storage area 7, dry ice 9. is placed at the top with the interfaces in contact. A cold storage agent 1O is charged to the lower and lower parts. The refrigerant lO charged in section F is a cooling medium in which a liquid-solid phase shift refrigerant is wrapped in a resin film such as vinyl chloride, and for example, rAQUA-UJ (trademark) manufactured by Eslen Kako Co., Ltd. is effective. used for.

Further, although the dry ice 9 in the upper part can be densely packed in the form of lumps, it is effective to charge the dry ice 9 with integral blocks to maintain cold retention.

During charging, it is effective to bring the contact surfaces of the dry ice 9 and the refrigerant lO into as close contact as possible.

Since this invention has the above-described structure, the dry ice 9 is charged above the cool storage agent 10 in the storage section 7, and at the same time, the cold air of the dry ice passes through the air-permeable holding plate 6 while rapidly solidifying the refrigerant components of the cold storage agent. The container itself! The internal cooling is quickly and efficiently maintained by the synergistic cooling effect of the two refrigerants. During the cooling process, dry ice smoothly discharges the generated carbon dioxide through the gas vent hole 5 and is gradually consumed, reducing its cold storage function. However, the cooling effect of the cold storage agent skillfully compensates for this loss of function and provides sufficient cold storage. Lasts effect.

[Effects of the Invention] The cooling device of the present invention provides the following various practical effects.

1. Since dry ice and cold storage agent are placed in the storage area, the synergistic cooling effect not only provides efficient cold storage, but also greatly extends the duration of cold storage. This effect is
Conventional coolers using only dry ice have a cooling temperature of 5 to 10 liters.
0°C, the duration of cold storage is 4 to 5 hours, but with the cooling container of the present invention, the cold storage agent functions even after the dry ice disappears, and as a result, the temperature stays at a high temperature of -5 to -10°C for about 24 hours. The cooling effect can be sustained.

2. Since the structure is extremely simple, it is convenient for carrying around and for continuous voice use, and it can be used continuously by refilling only with dry ice, so it can be used in a wide range of fields due to its low cost.

3. Since the dry ice is placed above the refrigerant, it does not come into direct contact with the object to be cooled.
Even I/1 foods whose tissue cells are easily destroyed can be safely cooled.

[Brief explanation of the drawing]

Fig. 1 is a side sectional view illustrating the cooling container of the present invention;
The figure is a partially cutaway sectional view taken in the entry direction of FIG. 1. 1... Container body 2... ha3... Outside
Packing 4... Insulating material inner layer 5... Gas vent hole 6... Holding plate 7... Storage area
8...Hinge 9...Dry ice lO...
・Cold storage agent patent applicant: Japan-Europe Trade Representative Co., Ltd. Yoshihisa Kawaguchi 4mi Figure 1 Procedure corrector (method) % formula % 1, Indication of the case Patent application No. 1983-210784 2, Name of the invention Cooling container 3, Relationship with the case of the person making the amendment Patent applicant address: Palais Royal, 2-17-54 Akasaka, Minato-ku, Tokyo No. 1-1002 l) Application 2) Specification 3) Drawings 5, Contents of the amendment

Claims (1)

[Claims] 1. A storage area 7 having a plurality of gas vent holes 5 is provided in the inner surface space of the upper lid 2 which is hinged to the container body 1 so as to be openable and closable, and the upper lid is placed in such a state that the interface is in contact with the storage area. dry ice 9
, a cooling container having a structure in which a cold storage agent 10 is charged in a layered manner in the lower part. 2. The cooling container according to claim 1, wherein the lower surface of the storage portion 7 is constructed with a breathable holding plate 6, and at least a portion of the upper lid 2 is formed into an openable structure.