JPH0523504Y2 - - Google Patents

Description

[Detailed explanation of the idea]

<Industrial Application Field> This invention utilizes a physicochemical endothermic reaction,
The present invention relates to a cooling container that can cool food and drinks in a short time when necessary. <Prior Art> In conventional cooling containers, a mixture of ammonium nitrate and urea or a mixture of ammonium nitrate and ammonium chloride is known as a chemical used in addition to reaction water to cause an endothermic reaction. These agents may be used alone, but as mentioned above, the cooling effect may be enhanced by using two or more in combination, and they have often been used. <Problems to be solved by the invention> However, mixing ammonium nitrate and organic substances in powder or granule form is known to be dangerous as it may cause an explosion. Furthermore, it has been found through experiments that depending on the combination of drugs, if two types of drugs are stored at high temperatures in direct contact with each other, the drugs may react with each other or change in quality. <Means for Solving the Problems> The present invention was developed in view of the above circumstances, and uses an endothermic reaction to cool the object, such as food, by utilizing the endothermic reaction when the drug dissolves in water. In a cooling container having two chambers, an endothermic reaction chamber and a cooling object storage chamber, the endothermic reaction chamber includes a water container having a means for destroying the water container by applying external pressure, and two or more types of cooling containers. A cooling container that compartmentally stores drugs and is further equipped with a separation membrane made of a water-soluble material that partitions the two or more drugs into two or more, so that the drugs do not come into contact with each other during storage. It is configured so that it does not occur. <Function> The cooling container of the present invention can be used by appropriate means, such as artificially pressurizing the mechanism that transmits external pressure to the water container, thereby destroying the water container and causing the reaction water to flow out, filling the area around the drug with the reaction water. The separation membrane that partitions the drug is removed, the drug and reaction water are mixed, and only then does an endothermic reaction occur. <Example> The present invention will be described in detail below with reference to the drawings.
FIG. 1 is a sectional view showing one embodiment of the cooling container of the present invention. The inside of the container body 9 is divided into two chambers by the medicine container 8. These two parts are fixed by winding them together at their ends. A space surrounded by the outer portion of the drug container 8 and the container body 9 is filled with contents 11 . Inside the drug container 8, two or more types of drugs 10 that react with the reaction water 7 to cause an endothermic reaction are stored and separated by separation membranes 12, respectively. A water container 5 containing reaction water 7 is housed above the two or more types of chemicals 10, and the medicine container 8 is sealed with a lid 2. Furthermore, a removable protective cap 1 is provided on the lid 2. The container body 9 is a cylindrical body made of paper, metal, plastic, or a composite material thereof. Further, the drug container 8 is made of metal so that heat due to an endothermic reaction, which will be described later, can be easily exchanged with the contents 11. By mixing with the reaction water 7 in the drug container 8,
Two or more types of drugs 10 that cause an endothermic reaction are housed, and each drug 10 is separated by a separation membrane 12 so as not to come into direct contact with each other. As drug 10,
Known materials such as ammonium nitrate, urea, ammonium chloride, etc. are used in arbitrary proportions depending on the required reaction temperature. The separation membrane 12 is made of a material that is at least easily soluble in water, and preferably soluble in water even at low temperatures of 10° C. or lower. Specifically, water-soluble resins such as polyvinyl alcohol,
Alternatively, a neutral simple polysaccharide (hereinafter referred to as pullulan) in which maltotriose is linked with α-1,6 bonds can be used. Particularly, this pullulan is preferable because it easily dissolves in water even at low temperatures. 2 or more types of drugs 10
In order to separate each drug 10 as shown in the figure,
At least one of the above is packaged with the above-mentioned separation membrane 12, or the drugs 10 are arranged in layers, and each drug 10 is packaged with the separation membrane 12 described above.
A separation membrane 12 may be provided between the layers as a partition wall. In any case, it is necessary to provide the separation membrane 12 in a state where the respective drugs 10 do not come into direct contact with each other. The water container 5 is constructed to be destroyed by appropriate means and the reaction water 7 flows out, and in the embodiment shown in FIG.
The top surface 3 has a structure that can be displaced from a convex shape to a concave shape by external operation, the opening on the opposite side is sealed with a sealing member 6, and a column-shaped breakable member 4 is attached to the top surface 3. The water container 5 is provided in an inclined manner toward the center of the water container 5. Second
The figure shows the state in which the embodiment of FIG. 1 is used. First, the lid 2 is deformed from a convex shape to a concave shape by being pushed inside. and the top surface 3 of the water container 5
is similarly transformed accordingly. Then, as the top surface 3 deforms from a convex shape to a concave shape, the columnar destructive member 4 spreads out in a fan shape, and the tip 4' of the destructive member 4 protrudes below the sealing member 6. The member 6 is greatly cleaved, and the reaction water 7 in the water container 5 is released.
is poured onto the drug 10. When the reaction water 7 is poured, the separation membrane 12 surrounding the drug 10 is dissolved, so that the reaction water 7 and the drug 10 are mixed. After this, an endothermic reaction is started by shaking and stirring as necessary. Due to this cooling reaction, the contents 11 are transferred to the drug container 8.
cooled through the walls of the In the present invention, the structure of the water container 5, that is, the reaction water 7
The method for draining water is not limited to the above-mentioned embodiments, but may be arbitrary. For example, a pin may be provided on the movable inner top surface of the water container 5 to pierce the sealing member 6, or a separate pin may be prepared to drain the water from the container. The water container (water bag) 5 may be destroyed by piercing a pin from the outside. <Test Example> The following experiment was conducted to measure the high temperature storage stability and subsequent cooling ability of the drug. Ammonium nitrate and urea are used as drugs.
40g of ammonium nitrate was prepared, packaged with pullulan, and the drug was placed in a metal container and sealed.
Thereafter, the above test products were stored in constant temperature chambers at 20°C, 40°C, and 60°C for 24 hours. Slowly cool the test item to room temperature,
After adding 80 g of pure water at 20° C. as reaction water and stirring, the metal container was poured into a plastic container containing 200 g of water at 20° C., and the water was cooled. The temperature of the cooled water was measured over time. As comparative examples, 80 g of ammonium nitrate alone (Comparative Example 1), 80 g of urea alone (Comparative Example 2), and a mixture of 40 g of ammonium nitrate and 40 g of urea (Comparative Example 3) were prepared and similar experiments were conducted. The results are shown in the table.

[Table] <Effects of the invention> Since the invention consists of the above-mentioned configuration,
Before use, the drugs do not come into contact with each other, so there is no risk of explosion, and since the drugs do not change in quality, a predetermined endothermic reaction occurs during use, allowing the contents to be cooled appropriately, which is excellent in practical use. It is a cooling container.

[Brief explanation of the drawing]

Fig. 1 is a sectional view showing one embodiment of the present invention;
The figure is a sectional view showing the usage state of the same embodiment. 3...Top surface, 4...Destructible member, 5...Water container,
6... Sealing member, 7... Reaction water, 8... Drug container, 9... Container body, 10... Drug, 11... Contents, 12... Separation membrane.

Claims (1)

[Claims for Utility Model Registration] 1. Two chambers, an endothermic reaction chamber and a storage chamber for objects to be cooled, are designed to cool objects to be cooled, such as food, by utilizing an endothermic reaction when a drug is dissolved in water. In the cooling container having a structure in which the endothermic reaction chamber contains a water container having means for destroying the water container by applying external pressure and two or more types of chemicals, the water container is partitioned and accommodated;
A cooling container further comprising a separation membrane made of a water-soluble material that partitions the two or more types of drugs into two or more. 2 In the separation membrane, maltotriose is α-1,
The cooling container according to claim 1, which is a film made of a neutral simple polysaccharide having six bonds.