JPH0341616Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a heating container that is combined with a heating element that utilizes the heat of chemical reaction.

(Prior Art) A heating structure in which a heating element that utilizes chemical reaction heat is combined with a part of a container containing food and drink is well known. For example, as in JP-A-58-157419, an example is shown in which a heating portion protruding into the can is provided on the bottom plate of a can to heat food such as soup.

Further, as a heating element that utilizes a chemical reaction, an oxidation reaction of iron or alkali metal sulfide, or a hydration reaction of calcium oxide is applied. Some of these heating elements use water as a reaction initiator or reaction component, and JP-A-56-147882 discloses a combination of calcium oxide and a crystal water-containing compound as a water supply. Introduced.

(Problem to be Solved) However, in the case of these heating elements that require water, the temperature of the heating element rises during the reaction, and it is difficult to avoid generating high-temperature water vapor. In particular, when a heating element is housed in a nearly airtight container and is used to heat food and drink, the pressure inside the heating element container may rise, or the high-temperature steam that protrudes may cause handling problems. There was a problem that it was dangerous.

In addition, if a heating element is housed in a container before use, vibration during transportation may cause the heating element itself to separate, or a space may be created between the container and the heating element, reducing thermal efficiency. The problem was that the

(Means for solving the problem) The present inventors have devised a heating container that can heat the heating element without being affected by vibration before use, and in a safe manner during use. did.

That is, the present invention is a heating container in which a heat generating layer 2 is provided on the upper part of a heating chamber having ventilation holes 1 on the lower surface, and a heating chamber is provided with a sponge layer 3 interposed on the entire lower part of the heat generating layer. be.

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

The drawing is a sectional view of one embodiment of the present invention. In the figure, the material used as the sponge layer 3 is soft and has excellent cushioning properties, and the cell structure is a continuous porous body made of open cells. Specifically, resin sponges such as polyurethane, polyethylene, polyvinyl chloride, and rubber, and inorganic sponges based on silicone are used.

The sponge layer 3 is installed so as to cover the entire lower part of the heating element 2 and to such an extent that the heating element components do not move to the lower part of the sponge layer 3. Also sponge layer 3
The thickness must be at least 5 mm to prevent high-temperature steam from blowing out, and approximately 10 mm to prevent the heating element from being affected by vibration.
Furthermore, it is desirable that the thickness be such that the heating element is compressed and does not move easily.

The heating element 2 used in the present invention is one in which water participates in the reaction, and usually contains calcium oxide as a main component. Calcium oxide reacts simply by direct contact with water, but since it is difficult to control the reaction rate, it is desirable to supply water from a crystal-containing compound or the like.

When a small amount of water is added to a heating element containing calcium oxide and a compound containing crystal water, reactions occur one after another and generate high-temperature steam, but with the sponge layer 3 interposed, there is almost no fear of leakage. do not have.

In other words, the steam is absorbed by the sponge layer 3, which has excellent heat insulation properties.
As it passes through, it condenses and becomes a liquid that is absorbed into the sponge.

Next, the heating chamber of the present invention consists of a heating chamber wall 4 and a bottom cover 5 on the outside, and the bottom cover 5 is provided with a ventilation hole 1 for ventilation or water injection. The number of vent holes 1 is not limited to one, as long as it substantially serves the purpose of ventilation or water injection. Further, the vent hole is sealed with a seal or the like to prevent moisture before use.

The heating chamber wall 4 should preferably have good heat conduction.
Iron, aluminum, copper, etc. are used, but aluminum is preferred from the viewpoint of ease of processing. The bottom cover 5 may be made of a resin material other than metal, as long as it can be sealed except for the hole and is not deformed by heat or internal pressure.

The heating container of the present invention is suitable for cases where the heating chamber forms a part of the heating container and is not bonded to the heating chamber wall 4 and the container body 6 to prevent liquid from leaking, and the container body 6 has a recessed portion at the bottom. , the heating chamber can be fitted into the recess.

(Effects) The heating container of the present invention does not blow out the high-temperature steam that should normally be generated, and since the sponge provides an insulating effect, the bottom lid does not become hot, making it extremely safe to handle. expensive. In addition, the sponge layer not only plays the role of holding down the heating element, but also has the function of a cushion, so it prevents the heating element from separating before use and improves its adhesion to the heating chamber wall, and during use. Since it acts as a cushion when the heating element expands, it is possible to prevent the heating chamber from deforming.

The heating container of the present invention is particularly suitable for heating food and drinks because of its excellent handling safety.

[Brief explanation of the drawing]

The drawing is a cross-sectional view of one embodiment of the present invention. In the figure, 1 is a ventilation hole, 2 is a heat generating layer, 3 is a sponge layer, 4 is a heat generating chamber wall, 5 is a bottom cover, and 6 is a container body.

Claims (1)

[Scope of utility model registration request] This heating container is provided with a heating chamber having a heat generating layer 2 on the upper part of the heating chamber having a ventilation hole 1 on the lower surface, and a sponge layer 3 interposed on the entire lower part of the heating layer 2.