JPH0327981Y2 - - Google Patents

Description

[Detailed description of the invention] <<Industrial application field>> This invention relates to a heating container using a heating agent such as quicklime, and can be used to store liquid foods and drinks such as soup, miso soup, milk, coffee, and sake, cooked rice, potatoes, etc. Vegetables such as carrots, meat such as beef and pork, solid or semi-solid foods and drinks such as fish and shellfish, canned or bottled foods, and bags made of synthetic resin or aluminum laminated with synthetic resin. The present invention relates to a heating container for heating food and drink, and particularly to one with an improved water injection means.

<<Prior art and its problems>> Various attempts have been made to heat various foods and drinks using the heat of the hydration reaction between quicklime and water.
An example of this is disclosed in Publication No. 54382.

However, in the heating container described in the same issue, an openable opening is provided at the top of the container for injecting water, and when used, the opening is opened and water is poured into the quicklime, so the hydration reaction The disadvantage was that hot steam spewed out from the opening.

Therefore, as seen in Japanese Utility Model Publication No. 57-2867, a container has been proposed in which water for the hydration reaction is built into the container and the water is broken with an opening needle. The method also had the following problems.

<<Problems to be solved by the invention>> In other words, the water injection means in the above-mentioned publication is broken by piercing the water bag with an opening needle;
According to this, the hole in the broken water bag has a diameter that is almost the same as the outer diameter of the opening needle, so the amount of water supplied at the beginning of the hydration reaction is insufficient, and not enough water is distributed throughout the quicklime. A large amount of unreacted quicklime remains, and the temperature of the heated object does not rise sufficiently.

Moreover, if the amount of water supplied to the quicklime per unit time is insufficient at the beginning, the quicklime that reacts near the outlet of the hole in the water bag becomes slaked lime, and the slaked lime absorbs the water released from the hole. The hydration reaction takes place only in a relatively narrow area around the quicklime, making it extremely difficult to apply it to heating solid or semi-solid foods and drinks, which requires a large amount of heating energy.

This invention was made in view of the above-mentioned problems, and its purpose is to provide a relatively simple and cost-increasing food and beverage heating container that utilizes the hydration reaction between quicklime and water. It is an object of the present invention to provide a heating container equipped with water injection means that is extremely convenient and suitable for mass production, and particularly suitable for large-scale hydration reactions.

<<Means for Solving the Problems>> In order to achieve the above object, this invention combines a heat generating agent in an insulated container, an inner container for storing food and drinks, and a secondary reaction that is ruptured by the reaction heat of the heat generating agent. A heating container containing a water bag for induction in a stacked state,
The water bag is characterized in that it is formed into a flat shape with a thin synthetic resin film and a predetermined amount of water sealed in the film, and that the water is divided into approximately equal amounts.

<<Embodiments and Operations>> Hereinafter, preferred embodiments of this invention will be described in detail with reference to the accompanying drawings.

FIG. 1 shows an embodiment of the heating container according to this invention.

The heating container shown in the figure is roughly composed of an insulating container 20, a band-shaped water bag 22, a water-permeable bag body 28 that stores a flat water bag 24 and quicklime 26, and an inner container 30 that stores food and drinks that are heated objects. It is configured.

The insulation container 20 is made of paper, plastic, glass,
It is a box-shaped or cylindrical container assembled from plates of ceramics, metal covered with a heat insulating material, etc., and consists of a container part 20a with an open top end and a lid part 20b that closes the container part 20a.

As shown in FIGS. 2A and 2B, the band-shaped water bag 22 has both ends closed, a predetermined amount of water 34 is sealed, and the insulating container 20 is located between the water-permeable bag body 28 and the container portion 20a. It is placed on the inner surface of the container part 20a or between the water-permeable bag 28 and the inner container 30, and the closing parts at both ends are placed between the container part 20a and the lid part 20b of the heat-insulating container 20. Hold it in place.

The material used for the band-shaped water bag 22 is a thin film made of synthetic resin such as polyethylene, nylon, or polyester, or a laminate of two or more kinds of thin films, or a resin film laminated with aluminum foil.

Flat water bag 24 housed within a water permeable bag body 28
is broken by the hydration reaction of the quicklime 26, and releases the water inside for the secondary reaction of the quicklime 26. As shown in FIG. 3, a water bag 24 is placed at the center of the quicklime 26. Alternatively, the water bag 24 may be stored above the quicklime 26.

Details of the flat water bag 24 are shown in FIG. 4.

First, in FIG. 1A, the water bag 24 is configured to be divided into four parts and accommodate approximately equal amounts of water using partitions 24a formed by heat sealing or the like.

A slit may be provided in the partition portion 24a to facilitate separation, and the partition portion 24a may be completely separated as shown in FIG.

If the flat water bag 24 is partitioned or separated in this way, when the quicklime 26 undergoes a hydration reaction, 1
When the heat of the next hydration reaction is biased and the flat water bag 24 breaks at any point, the water inside is released from only one place, and as in the case of breaking with an opening needle, the water in the vicinity of the broken point This prevents the reaction from proceeding only in this case, making it possible to react the quicklime 26 sufficiently and uniformly.

The material of the flat water bag 24 is the same as that of the band-shaped water bag 22.
The material may be the same as that of The material of the water-permeable bag 28 may be paper, cloth, non-woven fabric, etc., which allow water to pass through easily over its entire surface, but other materials may also be used, such as aluminum foil or aluminum foil with a synthetic resin film attached. It may be made to have water permeability by enclosing the quicklime 26 and the flat water bag 22 and having a through hole 28a in at least the lower surface, which is illustrated in the drawings of this embodiment.

The medium container 30 for storing food and drink is placed on top of the water-permeable bag 28 as shown in FIG. It is placed and stored on the bag 22.
The inner container 30 is most preferably molded from a metal foil such as aluminum, but may also be a laminate of a synthetic resin film and a metal foil, or a heat-resistant synthetic resin film. In addition, in the case of a food or drink such as a Japanese lunch box in which cooked rice and vegetables are stored separately, a partition is provided to separate the cooked rice and vegetables, or the medium container 30 is divided into a plurality of parts and stored in the insulated container 20. It turns out.

As shown in FIG. 1, the lid part 20b of the heat insulating container 20 is inserted into the opening of the container part 20a so as to press both ends of the band-shaped water bladder 22 hanging down from the opening end of the container part 20a. It's covered.

In use, food and drink are placed in the medium container 30. In this case, food and drink may be poured directly into the container, or food and drink may be placed in cans, plastic, or aluminum containers. In the case of canned food or retort food, it is better to place approximately 30 to 100 c.c. of water as a heat medium in the medium container 30 in advance.

Next, one end of the band-shaped water bag 22 is broken and opened,
By pulling out the band-shaped water bag 22 toward the other end, the water in the band-shaped water bag 22 is discharged into the container portion 20a, and the quicklime 26 in the water-permeable bag body 28 starts a hydration reaction from the lower part.

According to such water injection means, the water in the band-shaped water bag 22 is supplied first at once, so it is necessary to either pierce the insulating container 20 from the outside with a sharp protrusion as in the past, or install a protrusion inside. In this case, it is possible to avoid the problem of not being able to sufficiently heat the food or drink due to the small amount of water released per unit time and a large amount of unreacted quicklime remaining when breaking with a protruding rod.

Also, put an opening stopper in the sealed water bag.
A water injection method in which the opening plug is pulled out with a string or the like may be considered, but the work of attaching the opening plug to the water bag is troublesome and increases the cost. If the water remains between the bags 28, the discharged water will be obstructed by the remaining water bags and will not be able to reach the quicklime 26 in the center, leaving a large unreacted quicklime portion in the center.

On the other hand, when a water bag is placed on the water-permeable bag body 28 and water is poured using an opening stopper, if this water bag remains, it will become a major obstacle to transmitting the heat of the hydration reaction of the quicklime 26 to the inner container 30. It is preferable that the water bladder used for this type of hydration reaction be pulled out and removed to the outside, like the band-shaped water bladder 22 of the present invention, to allow the hydration reaction to occur without the above-mentioned problems.

Furthermore, if the strip-shaped water bag 22 is pulled out slowly, there is a risk that the discharged water will be unevenly distributed. , it is desirable to sandwich several small diameter balls.

Then, by pulling out the band-shaped water bag 22, the quicklime 26
When the hydration reaction starts, the reaction heat causes the flat water bag 24 housed in the water permeable bag body 28 to
is broken by the primary reaction heat of the quicklime 26, and water is discharged, thereby completing the reaction of the unreacted part of the quicklime 26 and heating the food in the food and drink container 30 to a temperature suitable for eating.

The function of the flat water bag 24 is that when the amount of water in the band-shaped water bag 22 is increased, the upper and side parts of the water permeable bag body 28 will not be burnt by the reaction heat, but a large amount of hot steam will be spewed out, making it dangerous. I don't like it at all.

On the other hand, if the amount of water in the band-shaped water bag 22 is reduced to such an extent that hot steam does not blow out, the reaction heat of the quicklime 26 will burn the top and sides of the water-permeable bag 28, leaving the unreacted part of the quicklime 6. Undesirable.

Therefore, the amount of water required for the hydration reaction of the quicklime 26 is divided into appropriate amounts between the band-shaped water bladder 22 and the flat water bladder 24, thereby avoiding the above-mentioned problem.

In addition, in the above embodiment, the case where water injection for the primary hydration reaction of the quicklime 26 to break the flat water bag 24 is carried out by pulling out the band-shaped water bag 22 was exemplified.
The water injection means for the primary hydration reaction is not limited to this, for example, water may be directly poured into the gap between the container part 20a of the heat insulating container 20 and the middle container 30, and in this case, the flat water bag 24 Since it is stored in advance, there is no need to inject the amount of water necessary for the hydration reaction of the quicklime 26 as in the conventional case, and the amount of hot steam emitted is reduced.

<<Effects of the invention>> As explained above in detail in the implementation section, according to the heating container of this invention, there is less spouting of hot steam;
In addition, there is no unreacted quicklime and a large amount of hydration reaction heat can be used to heat various foods and drinks.

[Brief explanation of the drawing]

Fig. 1 is a cross-sectional view showing an embodiment of the heating container of the present invention, Fig. 2 is an explanatory diagram of how the band-shaped water bag is stored in the container, and Fig. 3 shows the flat water bag and quicklime placed in a water-permeable bag. FIG. 4 is a sectional view of the flat water bladder stored in the body, and a plan view of two embodiments of the flat water bladder. 20...Insulated container, 20a...Container part, 22...
... band-shaped water bag, 24 ... flat water bag, 26 ... quicklime, 28 ... water-permeable bag body, 30 ... medium container.

Claims (1)

[Scope of utility model registration request] A heating container in which a heat-generating agent, an inner container for storing food and drinks, and a water bag for inducing a secondary reaction that is ruptured by the reaction heat of the heat-generating agent are stored in a stacked state in an insulating container, the water bag being 1. A heating container characterized in that it is formed into a flat shape comprising a thin synthetic resin film and a predetermined amount of water sealed within the film, and the water is divided into approximately equal amounts.