JPH072143B2 - Liquid food heating container - Google Patents

Description

TECHNICAL FIELD The present invention relates to a heating container for liquid food and drink utilizing the combustion reaction of a self-combustion type exothermic agent comprising a combination of an oxidizing agent and a reducing agent.

(Prior Art) Conventionally, it has been conventionally known to utilize high-temperature combustion heat of an exothermic agent in which an oxidizing agent and a reducing agent are combined as a heating method for food and drink, and as a prior art, for example, Japanese Utility Model Publication No. 58- 24119
And Japanese Utility Model Laid-Open No. 62-198460.

In Japanese Utility Model Publication No. 58-24119, the structure is a cylindrical container,
A small hole is provided at the tip of a pencil type cylindrical container with a tapered tip, a heating agent is filled in the upper part of the container leaving a space, and a string-like ignition agent connected with the heating agent is put out above the small hole. In the technology so far, the problem that flames, sparks and smoke are emitted from the tip of the heating cylinder has been solved, and it is a throwing type as a heating cylinder for liquid etc. .

Further, in Japanese Utility Model Laid-Open No. 62-198460, there is a problem in the prior art by providing a heat-defective conductor layer in the range of only 0.5 to 2.0 mm thickness at the bottom of a bottomed metal cylinder made of a good conductor of heat. It is introduced to measure the effect of reducing boiling noise of heated liquid.

(Problems to be Solved by the Invention) The self-combustion type heating agent as described above generally has a high combustion temperature, and for example, when the sake is rapidly heated for drinking sake, the entire heating agent storage container is a good thermal conductor. In the vicinity of the interface between the heating agent storage container and the liquor in contact therewith, the boiling phenomenon of liquor occurs, a very loud boiling noise is generated, and there is a problem that the consumer feels fear. .

(Means for Solving Problems) As a result of various studies to solve these problems, the present inventors have found that the bottom portion of the cylindrical or polygonal heating agent accommodating portion made of a metal having good thermal conductivity is used. In addition to the conventional technique in which a heat-defective conductor layer having a constant thickness is provided between the inner surface and the outer surface of the bottom of the heating agent placed in the storage section, a sidewall inner surface of the cylindrical or polygonal heating agent storage section is provided. By providing a gap between the heating agent and the outer surface of the side wall, the heat transfer rate is temporarily delayed so that the high heat from the heating agent is not directly and rapidly transferred to the liquid food and drink. The present invention has been completed by finding that the above can be reduced.

That is, the present invention is one in which a self-combustion type heating agent is pressure-molded in a heating container for liquid food or drink or one in which a self-combustion type heating agent is filled in a preformed thin-walled metal container, the bottom of the heating container is It is mounted inside a heat-defective conductor arranged in a heating agent storage portion provided by forming a cylindrical or polygonal cylindrical convex portion toward the inside of the container, and the wall surface of the heating agent storage portion and the above-mentioned heating A heating container for liquid food and drink, comprising a heat-defective conductor layer provided between the agent and the metal container.

The present invention will be described below with reference to the drawings.

FIG. 1 is a vertical cross-sectional view of one embodiment of the present invention, and FIG. 2 is a cross-sectional view of the heating container taken along the line AA ′ in FIG. 1 and 2, 1 is a self-combustion type heating agent, 2
Is a thin metal container, 3 is a heat-defective conductor layer, 6 is a heating agent storage part, 7 is a side wall of the heating container 10, 9 is liquid food and drink, 10 is a heating container, 12 is a squib, and a heat-defective conductor layer 3 is provided so as to wrap the entire periphery of the molded self-combustion type heating agent 1, and the high heat from the heating agent 1 is not directly and rapidly transferred to the liquid food and drink 9 through the heating agent storage portion 6, The structure is such that heat is gradually transferred through the defective conductor layer 3. The heat transfer rate can be controlled by changing the material of the substance forming the heat-defective conductor layer 3 and the thickness of the layer, and as a result, the boiling noise at the time of heating the liquid food 9 can be reduced. It will be possible.

As the material of the substance forming the heat-defective conductor layer 3 in the present invention, a substance which is generally an inorganic substance having poor thermal conductivity and which does not decompose and react by heat is preferable.
Sheets of glass material, perlite, shirasu microballoon, silica sand, glass microballoon, fly ash, vermiculite, Al ₂ O ₃ , SiO ₂ , Fe ₂ O ₃ , rock powder and the like can be mentioned. The shape may be granular, powder or sheet, and the thickness of the heat-defective conductor layer 3 is preferably 1.0 mm or more.

The heating agent 1 used in the present invention is a combination of an oxidizing agent and a combustible agent, and is based on a combustion reaction that does not require a reaction with oxygen in the air. As the oxidizing agent, lead tetraoxide, ferric oxide are used. The metal oxides such as calcium permanganate and the combustible agents include metal powders such as silicon iron, aluminum and iron powders.

In the present invention, a powdery heating agent obtained by mixing these oxidizing agents and combustible agents is molded into a polygonal columnar shape or a columnar shape under appropriate pressure, or a powdery heating agent is preliminarily added. It is used by filling it into a thin-walled metal container that is molded into a rectangular tubular shape or a cylindrical shape. Further, as the material of the thin-walled metal container, a metal having a relatively high melting point such as aluminum foil, for example,
Examples include iron materials such as tinplate and galvanized iron. Examples of the shape include a cylindrical object having a polygonal or circular cross section as shown in FIGS. Further, the heating agent storage portion has a cylindrical shape as shown in FIGS. 3 to 8 or FIGS.
As shown in the figure, it may be shaped into a polygonal column. Among these, a combination of a cylindrical heating agent storage portion and a polygonal columnar metal container loaded with the heating agent is preferable in terms of molding the heating agent and the container.

The heating container of the present invention uses a match, an incense stick, a lighter or the like to ignite the squib 12 to easily ignite the heating agent by burning the squib 12, and to transfer the heat of combustion of the ignited heating agent to a liquid food or drink. Is structured to be heated.

(Effect) When using the heating container of the present invention to heat liquid drinks such as liquor, coffee, milk, soup, and tea, there is no fear of giving fear to consumers because the boiling sound is extremely small.
In addition, since the heat transfer rate to the liquid food and drink can be controlled to some extent by the function of the heat-defective conductor layer, it is considered that even with high heat due to the combustion of the heating agent, the heat transfer rate is relatively high and the heat transfer property is slightly poor. When applied to liquid foods and drinks, such as soups, it is considered that the range of application is expanded in terms of preventing charring of the soups and the like.

(Examples) The present invention will be described below with reference to Examples.

Examples and Comparative Examples A heating container having a cylindrical heating agent storage part as shown in FIG. 1 and having 180 ml of sake filled in a heating container made entirely of aluminum was used and heated under the conditions described below. The boiling sound of sake at that time was measured. The results are shown in Table-1. The heating agent storage section has an inner diameter of 40 mmφ and a thickness of 0.2 m.
An aluminum semi-closed container with a depth of 45 mm and a polygonal columnar shape filled with 27 g of a heating agent consisting of a heat-defective conductor shown in Table 1 and 60% by weight of potassium permanganate and 40% by weight of iron powder. A thin-walled metal container was inserted so that the heating agent shown in Table 1 would be mounted, and the heating agent was ignited and burned through the squib into the heating container for the resulting liquid food and drink through a match.

The boiling noise is measured by Imion Sound Level Meter NA manufactured by Rion Co., Ltd.
Using -61, measurement was performed at a position 1 cm away from the outer wall of the heating container for liquid food and drink.

[Brief description of drawings]

FIG. 1 is a longitudinal sectional view of one embodiment of the present invention, and FIG.
Sectional sectional views taken along the line AA 'in FIGS. 3 to 12 are transverse sectional views of other embodiments. In the figure; 1 is a self-combustion type heating agent, 2 is a thin metal container, 3
Is a heat-defective conductor material, 4 is a heat insulating agent, 5 is a lid of a heat insulating layer, 6 is a heating agent storage portion, 7 is a side wall of the heating container 10, and 8 is a heating container 10.
Top lid, 9 is liquid food and drink, 10 is a heating container, 11 is a seal, 12
Indicates a squib.

Claims (1)

[Claims] 1. A heating container for liquid food and drink, wherein a self-combustion type heating agent is pressure-molded or a preformed thin-walled metal container is filled with the self-combustion type heating agent. Is mounted inside the heat-defective conductor arranged in the heating agent storage portion provided by forming a cylindrical or polygonal cylindrical convex portion toward the inside of the container, and the wall surface of the heating agent storage portion and the above A heating container for liquid food and drink, comprising a heat-defective conductor layer provided between the heating agent and the metal container.