JPH0425082Y2 - - Google Patents

Description

[Detailed description of the invention] ≪Industrial application field≫ This invention relates to a heating container that uses a heating agent such as quicklime, and can be used to store liquid foods such as soup, miso soup, milk, coffee, and sake, cooked rice, potatoes, and carrots. solid or semi-solid foods such as vegetables, meat such as beef and pork, fish and shellfish, canned food, bottled food, and packed in synthetic resin or bags made of aluminum laminated with synthetic resin. The present invention relates to a heating container for heating food and drink, and particularly to one with improved heating efficiency.

<<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 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 suitable for mass production and capable of efficiently heating solid or semi-solid foods and drinks.

≪Means for Solving the Problems≫ In order to achieve the above object, this invention combines a heat generating agent in a heat insulating 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 heating agent, the water bag, and the medium container are surrounded by a thin sheet, and a through hole is provided at least on the heating agent side of the sheet.

<<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.

The band-shaped water bag 22 has both ends closed and a predetermined amount of water 34 sealed therein, and includes a water-permeable bag body 28 and a container portion 2.
It is arranged on the inner surface of the container part 20a of the insulated container 20 between the insulated container 20 and the insulated container 2
0 between the container part 20a and the lid part 20b.

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 to be used for the secondary reaction of the quicklime 26.The water bag 24 is housed in the center of the quicklime 26, or the water bag 24 is placed above the quicklime 26. The water bag 24 may be stored in either case.

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.

The medium container 30 for storing food and drink is placed and stored on the water-permeable bag 28, as shown in FIG. 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.

Furthermore, in this embodiment, the quicklime 26 of the water-permeable bag body 28 containing the flat water bag 24 and the quicklime 26 is
is positioned below, and the medium container 30 is placed above the bag body 28.
These members are surrounded by a thin film sheet 40 of aluminum foil.

A plurality of through holes 42 , 42 are bored in the lower surface of the thin film sheet 40 located on the quicklime 26 side, and the upper end of the sheet 40 is folded inside the medium container 30 .

In use, food and drink are placed on the thin film inside 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 this to the other end side, the band-shaped water bag 22
water is discharged into the container portion 20a, and the discharged water passes through the through holes 42 of the thin film 40 and enters the water permeable bag body 28, and the quicklime 26 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 the residual amount of unreacted quicklime when the product is broken with a protruding rod.

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.

Here, the reaction heat and hot steam generated by the hydration reaction of the quicklime 26 are transferred to the inner container 30 to heat the food and drink, and in particular, the hot steam passes through the gap between the thin film sheet 40 and the outside of the inner container 30. Then, after entering the inside of the medium container 30, heat is transferred to the food and drink.

Therefore, the reaction heat of the quicklime 26 is hardly released to the outside and is used to heat food and drink, and even solid or semi-solid food and drink can be heated efficiently in a short time.

Furthermore, since the quicklime 26 is surrounded by the thin sheet 40, it is prevented from absorbing moisture from the outside and deteriorating in quality.

Figure 2 shows a second embodiment of this invention.
Only the characteristic points will be explained below.

In the embodiment shown in the figure, the quicklime 26 of the water-permeable bag body 28 containing the flat water bag 24 and the quicklime 26 is positioned below, and the medium container 30 is placed above the bag body 28, and these are The member is completely surrounded by a thin film sheet 44 made of synthetic resin.

A plurality of through holes 46 are formed in the lower surface of the thin film sheet 44 located on the quicklime 26 side and the upper surface folded into the inner bottom surface of the medium container 30, respectively.

If the water-permeable bag 28 and the inner container 30 are completely surrounded by the sheet 44 as in this embodiment, most of the heat of the hydration reaction of the quicklime 26 inside the water-permeable bag 28 will be released to the outside. The heat can be transmitted to the heated food and drink housed in the inner container 30 without any heating.

In the above embodiment, the quicklime 26 and the flat water bag 24 are housed in the water permeable bag body 28, but the quicklime 26 and the flat water bag 24 are stored in the medium container 3.
The water-permeable bag 28 is not necessarily required since it is surrounded by sheets 40 and 44 made of aluminum foil or synthetic resin.

<<Effects of the invention>> As explained in detail in the examples above, according to the heating container of this invention, the energy of the hot steam from the hydration reaction is also used to heat the food and drink, so the food and drink can be heated efficiently. Can be heated in a short time.

[Brief explanation of drawings]

FIG. 1 is a sectional view showing one embodiment of the heating container of the present invention, and FIG. 2 is a sectional view showing another embodiment. 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, 4
0,44...Sheet, 42,46...Through hole.

Claims (1)

[Scope of utility model registration request] A heating container in which a heat-generating agent, an inner container for storing food and drink, 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 a heat-insulating container, the heat-generating agent, A heating container characterized in that three members, a water bag and an inner container, are surrounded by a thin sheet, and a through hole is provided at least on the exothermic agent side of the sheet.