JPS59131317A - Heating container - 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 The present invention relates to a heating container used for keeping or heating drinks such as Japanese sake or tea, or portable foods such as lunch boxes.

Traditionally, food and beverages such as sake and tea are required to be warm during the cold season, and for this reason, they are sold warmed in food insulators at shops and the like, and they are also heated and served at home. However, it is difficult to heat it when carrying it outdoors for leisure or hiking, and when using a thermos container or other heat-retaining container, it is bulky and cannot be kept warm for a long time.

The purpose of the present invention is to provide a heating container that can be easily carried around and that can heat food, drinks, food, etc. as needed. The present invention is characterized in that it is provided with a storage section that stores a liquid medium, and that a wall surrounding the storage section is provided with a conductive section that allows air or moisture to flow into the storage section when it is broken.

An embodiment of the present invention will be described below based on the drawings.

FIG. 1 illustrates a case where the heating container 1 of the present invention is formed as a heating tool for heating a drink container C such as a cup filled with a drink, and the heating container 1 is shaped like a container with an open top. A housing part 3 filled with a powdered medium 8 that can generate heat by the action of air or moisture is provided inside the peripheral wall 2, and a conductive part 6 is formed in the wall 5 surrounding the housing part 3. ing.

In this embodiment, the peripheral wall 2 has a two-layer wall structure in which a cup-shaped inner wall 9 and an outer wall 10 are placed opposite to each other with a gap in between, over the entire heating container 1, and the gap has a medium 8 inside. The inner wall 9 and the outer wall 10 form a wall 5 that surrounds the containing part 3, and the upper flange 11 of the inner wall 9 is extended outward and its outer edge is connected to the outer wall. 10 to shield the housing part 3. In order to prevent air or moisture from acting on the medium 8 and to effectively conduct heat from the medium 8 inside, the inner wall 9 is preferably made of an impermeable material with good heat conductivity such as metal foil such as aluminum or zinc. is used. On the other hand, in this embodiment, the outer wall 10 includes a transparent film layer 12 that is permeable to air or moisture and is connected to the upper flange 11 of the inner wall 9, and a film layer 12 that is disposed on the outside and can completely block air or moisture. It is a laminate consisting of a transparent film layer 13, and a transparent film layer 12.
By removing and tearing the impermeable film layer 13, the conductive portion 6 that allows air and moisture to flow into the housing portion 3 is formed. Here, the permeable film layer 12 may be anything that can permeate air or moisture, such as Japanese paper, fiber fabric, nonwoven fabric, or a porous polymer film such as polyethylene, polyvinyl chloride, or polypropylene. However, there are no particular restrictions on the material. - The male hand-permeable film layer 13 is made of a polymer film such as polyethylene, polyvinyl chloride, or polypropylene, or a metal foil such as aluminum or zinc, which does not allow air or moisture to pass through. and the impermeable film layer 13 are laminated using an adhesive so that they can be easily peeled off, or are simply superimposed, and as shown in the figure, by peeling off the impermeable film layer 13, the permeable film layer is formed. Air or moisture is introduced into the container 3 through the container 12 and acts on the medium 8 filled inside, thereby causing an exothermic reaction. This heat generation causes the drink container C inserted into the heating container 1 to
Then, heat is transferred through the inner wall 9, which is made of metal foil or the like having excellent thermal conductivity, and heats the food and drink in the interior C. Note that after removing the outer wall 1o, an appropriate heat insulating container (not shown) can be fitted to the outside thereof.

In the present invention, the term "film" refers to a thin film, thin plate, etc. having a thickness of about 2W or less, and "removal" refers to peeling off, removing, tearing away, or penetrating.

Next, in the present invention, as the medium 8 that can generate heat due to the action of moisture or air, a compound that generates heat due to heat of hydration, neutralization, or heat of oxidation reaction can be used. The heat of hydration is the solid anhydride and n m o, 1
Table 1 shows typical examples of the amount of heat generated when forming hydrates with water.

The heat of neutralization is the amount of heat generated during the neutralization reaction between an acid and a base.

In addition, cobalt, chromium,
Iron, iron hydroxide, magnesium, manganese, molybdenum,
It is a powder of a reducing metal or metal compound such as stannous oxide or titanium oxide, which reacts with oxygen in the air at room temperature to generate an oxide and generate heat. Note that two or more types of metal powders may be mixed into the medium ε, or three or more types of compounds may be used simultaneously so that the hydration reaction, neutralization reaction, and oxidation reaction occur simultaneously. The hydration reaction can be carried out using moisture in the air, but the reaction can also be carried out by injecting an appropriate amount of water into the accommodating part 3 of the container 1 through the conduction part 6, if necessary. In addition, the medium 8 is preferably in the form of powder, particularly fine powder, in order to increase the contact area with air and water and allow the exothermic reaction to proceed smoothly. Fig. 2 shows another embodiment of the present invention. shows. In the heating container l,
The housing portion 3 is formed only at the bottom of the peripheral wall 2, and the peripheral wall 2 is
The outer wall 10 is integrally formed into a predetermined container shape using a polymeric material such as foamed polystyrene or foamed polypropylene that is impermeable to air and moisture. The foam is used here as a heat insulating material because it does not dissipate the heat generated by the medium 8, and the recess provided in the bottom plate of the outer wall 1o is filled with powdered medium 8, and the recess is passed through the recess. By sealing with a lid 15 made of a laminate of a transparent film layer 12 and an impermeable film layer 13, a container 3 for the medium 8 is formed. Therefore, in use, the impermeable film layer 1
By peeling and removing 3, the transparent film layer 12
Air or water enters the medium 8 through it and an exothermic reaction occurs.

In addition to the cylindrical shape, the heating container 1 of the present invention can also be formed into a rectangular container shape such as a lunch box. In the embodiment shown in FIG. A cut line may be provided to facilitate tearing only in the cut portion, and the conductive portion 6 may be formed by the cut portion, or a transparent film layer 12 may be attached only to the cut portion (as shown in FIG. 3). ).

Furthermore, as shown in FIG. 4, a bag 16 storing water or the like is housed inside the peripheral wall 2 so as to face the housing part 3 and form a part of the wall 5. The cough bag body 1 can be easily broken by pressing or penetrating with a nail or the like.
The heating container 1 of the present invention can be modified in various ways, such as forming a conductive part 6 that can introduce water into the housing part 3 by the broken part 6.

As mentioned above, the heating container of the present invention is convenient to carry and can be used at any time, and is safe because it heats and retains heat through the heat generated by chemical reactions, and can be used to store food and drinks such as drink cans, bottles, and boxes such as lunch boxes. It can be used as a heating device for containers that contain foodstuffs, and also as a heating device for storing and heating foodstuffs themselves. Furthermore, by using it as a packaging container for instant food, the heating and heat-insulating effect is further enhanced, making eating and drinking more convenient.

Table 1

[Brief explanation of the drawing]

1 to 4 are sectional views showing each embodiment of the heating container of the present invention. 2... Peripheral wall, 3-- Accommodation section, 5-- Wall body,
6...Conducting portion, 8-...Medium. Patent Applicant Meiji Machinery Co., Ltd. Representative Patent Attorney Nae Murakami No. 1 Figure 2 Figure 4-

Claims (1)

[Scope of Claims] (11) A container housing a medium that can generate heat due to the action of moisture or air is provided inside the container peripheral wall, and a wall surrounding the container is broken to allow air or moisture to flow into the container. (2) The heating container according to claim 1, wherein the medium is a metal powder that generates heat due to the oxidation action of air. (3) The medium is hydrated by the action of moisture. The heating container according to claim 1, which is a compound that generates heat.