JPH0519409B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a container with a heating device.

[Prior Art] Containers with heating devices that heat the contents without using heat sources such as gas or electricity have been developed using calcium oxide,
There are some that utilize the heat generated by the hydration reaction of calcium chloride or aluminum (utility development in 1980-
Publication No. 70235, Publication of Utility Model Application No. 1983-89332, Publication No. 89332 of Utility Model Application No. 1983
−93654, etc.). Examples of methods that utilize the heat generated by the self-combustion reaction of a heat generating agent consisting of a mixture of an oxygen supplying agent and a heating agent include JP-A-52-19358;
Recently, there have been published Utility Model Application No. 62-146427 and Utility Model Application No. 63-42089, etc. According to the technology disclosed in these publications, due to the nature of the exothermic agent, ignition can be done using an electric heater, lighter, fuse, etc. It was something to do.

[Problems to be solved by the invention] Products that utilize heat generated by the hydration reaction of calcium oxide, calcium chloride, aluminum, etc. have a slow heating rate, and the amount of heat obtained relative to the volume of the exothermic agent is extremely small. There are drawbacks.

Also, the above-mentioned Japanese Unexamined Patent Publication No. 19358/1983, Utility Model Application No. 62
In the heating containers described in Japanese Utility Model Publication No. 146427 and Japanese Utility Model Application Publication No. 63-42089, the exothermic agent is ignited by heating it for a while using an electric heater, fuse, or lighter connected to the exothermic agent due to the properties of the exothermic agent. It was very inconvenient to use, as it required a ignition tool such as a battery, a match, or a lighter to ignite the fire.

Furthermore, while exothermic agents that generate heat due to self-combustion reactions have the advantage of having high energy density, if they are not used in a normal manner, for example, if a container that is heated with water is heated without adding water, etc. Accidents such as fire and burns may occur.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a small and highly portable container with a heating device that is easy to ignite, prevents erroneous operation, and can heat quickly.

[Means/effects for solving the problems] As a result of various studies on a heater that generates a large amount of heat from a heating agent, is quick, simple, and low-cost, the present invention has developed a heating device that uses one or more types of metal oxide powder. and a main exothermic agent which is a mixture of one or more metals, semimetals, or alloy powders thereof, and one or more metal oxide powders that are in contact with the main exothermic agent and which are easier to ignite than the main exothermic agent, and metals. By providing an ignition agent consisting of a single metalloid or a mixture of one or more of these alloy powders, ignition can be easily ignited with a small amount of heat, and the lower part of the heating element consisting of the main exothermic agent and the ignition agent is provided with heat insulation. In addition, the igniter for igniting the igniter, or a part of the parts that make up the igniter, is installed in a location away from the igniter in the object storage container to ignite the igniter. By inserting it during operation, the structure prevents ignition due to incorrect operation. In addition, in order to prevent accidents such as fire and burns even in the event that normal operation is not performed, a heat insulating material such as alumina or silica is placed below the heating element, which consists of the main heating agent and ignition agent. ignition is achieved by installing a metal disk with good thermal conductivity and small holes that serve as a guide when inserting the igniter in the middle upper part of the insulation layer, in contact with the inner wall of the metal container that houses the heating element and insulation material. while ensuring that
Furthermore, it has a structure that suppresses heat transfer toward the bottom. When a heating element with a larger amount of heat is required as a heating element for a container with a heating device, a
The countersink (distance between the caulking part and the bottom of the can) is 5 to 10 mm deep, and the countersink is covered with a heat insulating material to improve safety.

In addition, in the case of a container that is filled with water and heated, a igniter is installed in the upper part of the container for storing the object to be heated.
The structure is such that it cannot be ignited unless the container is opened, and the igniter is installed inside a bottomed tubular storage container with a water inlet on the side of the container, and when water is filled, the buoyancy causes the ignition to ignite. The structure allows the ingredients to be taken out, increasing safety.

The present invention will be explained below with reference to the drawings. FIG. 1 shows an example of the basic structure of a container with a heating device according to the present invention.

A main exothermic agent 3 is placed at the bottom of a container 1 having a cylindrical, prismatic, etc. shape as shown in FIG. At the bottom of the heating element, there is a metal container 2 that houses the heat insulating material 5, which has a small hole 6 into which the igniter can be inserted, a small hole 10-2 into which the igniter can be inserted, and a small hole 10 for gas venting.
-3 and fixed together with the bottom metal plate 10. The igniter or some of the parts 7 that make up the igniter are attached to the fully open upper lid 8 with adhesive.
It is fixed with adhesive tape, etc., and when heating or cooking the object to be heated 9, open the top cover, take out the igniter, pour water from the top, and then remove the igniter or some of the parts that make up the igniter. Insert into holes 10-2 and 6 to ignite the ignition agent.

Note that the small holes 10-2 and 10-3 are sealed with aluminum foil, plastic film, etc., and it is more preferable from a safety standpoint to remove them during heating.

Figure 2 shows that the igniter or some of the parts constituting the igniter are located inside the heated object storage container at the water inlet 11-.
2. In this case, by opening the top lid 8 and pouring a predetermined amount of water, the water is stored in a plastic container 12. The igniter or a part 7 of the parts composing the igniter rises due to the buoyancy of the water and can be taken out from the upper part of the storage container 11.
This also clearly indicates the appropriate amount of water to be injected. After taking it out, take out the igniter or part 7 of it through the plastic container 12 and insert it into the small hole 1.
Insert from 0-2,6 and ignite.

As shown in FIGS. 3 and 4, the storage container 11 can be installed in a cylindrical container 11 made of plastic, aluminum, tin, or an edible material whose main ingredient is wheat flour, for example. A mounting flange 13 is provided on the top of the container, and the mounting flange 13 is installed between a flange 14 provided on the outer container 1 made of metal, resin, or paper and the top lid 8, and simultaneously tightened. A fixing method is used. Incidentally, when temporarily attaching the storage container 11 to the outer container 1 when it is tightened, positioning and attachment can be facilitated by providing a concave portion in the outer container flange.

FIG. 5 shows a metal disk 15 with good thermal conductivity, which has a small hole 15-2 in which a igniter can be inserted and gas can be vented, in the middle upper part of the heat insulating layer in the metal container 2 in which the heating element is housed. This is a case where the metal container 2 is installed in contact with the inner wall of the outer metal container 2. By transmitting the heat from the heating element to the metal container 2 through the metal plate 15, it is suppressed from being transmitted to the bottom, and the object to be heated can be heated efficiently, and even in the case of an erroneous operation, the heat is not transferred to the bottom. Safety is improved by holding down. The metal disk 15 can be made of iron, aluminum, or the like with a thickness of 1 to 3 mm.

The main exothermic agents of the present invention include iron oxide, copper oxide,
One or more types of metal oxides such as lead oxide, and metals or semimetals whose heat of formation is larger than that of the metal forming the oxide, such as silicon, titanium, or iron, or one of these alloys. It consists of a mixture of the above, and when the metal or metalloid deprives the oxide of oxygen and oxidizes, it generates a large amount of heat of formation. The ignition agent consists of a mixture of one or more of boron, aluminum, calcium, and magnesium, or one or more of their alloys, and one or more of oxidizing agents such as copper oxide, iron oxide, barium peroxide, and strontium peroxide. When , boron, aluminum, etc. are oxidized by copper oxide, iron oxide, etc., a large amount of heat of formation is generated. Main exothermic agents require a large amount of heat for ignition and are difficult to ignite, whereas ignition agents
Only a small amount of heat is required for ignition, and the ignition is easily ignited by a small amount of spark generated from the igniter.

By placing this ignition agent in contact with the main exothermic agent, the main exothermic agent is ignited by the heat generated by the ignition agent. That is, the combined use of an ignition agent facilitates ignition of the main exothermic agent.

The igniter uses frictional heat to ignite a mixture of one or more combustible substances such as red phosphorus, sulfur, arsenic sulfide, and phosphorus sulfide, and an oxidizing agent such as potassium chlorate, potassium perchlorate, and potassium nitrate, or ignites the mixture using frictional heat. A method is used that uses a stone (approximately 85% rare earth metal mixture, with the remainder consisting of iron and a small amount of magnesium) that strongly rubs against a hard metal to produce sparks.
The igniter is a general term for all devices that emit sparks, and the parts of the igniter refer to the flint, hard metal, etc. that make up the igniter.

For example, 1g of a mixture of 79.2% by weight of iron oxide and 20.8% by weight of silicon (Si) as the main exothermic agent generates about 600cal of heat, and when heating 500ml of water from 10℃ to 100℃, about 75g is sufficient. The time required for the temperature to rise to 100°C is approximately 1 minute, which is very quick.

In this case, as an igniter, 0.5 g of powder was used, which was a mixture of boron (12% by weight), iron oxide as an oxidizing agent, and a small amount of barium peroxide (88% by weight).
In addition, almost the same results can be obtained by adding a small amount of boron to aluminum as the ignition agent, copper oxide as the oxidizing agent, and a small amount of barium peroxide.

As the main exothermic agent, in addition to the above-mentioned combinations, iron oxide-ferrosilicon (iron-silicon alloy), which has a relatively low reaction temperature and is suitable for the present invention, has a calorific value of about 500 cal per gram, and copper oxide. The same amount is about 500 cal for silicon, and the same amount for lead oxide and silicon.
It was hot at 300 cal.

The finer the powders constituting the main exothermic agent and the ignition agent, the better the reactivity, and preferably finer than 200 mesh.

Further, the main exothermic agent and the ignition agent may be filled in a metal container in powder form, or may be press-molded at a press pressure of about 200 to 500 kg/cm ² to form pellets and filled into the container. In addition, when the main exothermic agent and the ignition agent are integrally press-molded, a part of the ignition agent may be provided as a powder to further improve the ignitability. Compared to powder, pellet-like materials have better heat transfer and tend to increase temperature faster.

When using a mixture of one or more combustible substances such as red phosphorus, sulfur, arsenic sulfide, and phosphorus sulfide as a igniter and an oxidizing agent such as potassium chlorate, potassium perchlorate, and potassium nitrate, the structure is as follows: 6 As shown in Figure 6, a thin wire 17 made of metal, wood, paper, cloth, etc. is placed inside a tube 16 made of paper, plastic, etc., and the mixture 2 of the combustible material and oxidizing agent is placed in the gap between the tube 16 and the thin wire 17.
0, and this is installed at the tip of a thin tube 18 made of aluminum or iron, and the tube 16 is fixed, and if necessary, a recess 19 is provided so that the generated sparks can be strongly emitted in one direction. Things are used.

When igniting, draw the thin line 17 of the igniter, or
Or, by pressing, frictional heat is generated between the tube 16, the thin wire 17, and the mixture 20 of combustible material and oxidizing agent, the mixture 20 is ignited, and sparks are emitted from the tip of the thin tube 18 to the outside. Note that a heat insulating material 21 is provided inside the thin tube 18 as necessary to prevent heat from leaking to the outside.
You can also enter

The structure of the heating element storage metal container 2 and the structure of the igniter when a flint is used as the igniter are shown in FIG. 7, FIGS. 8a and 8b, and FIG. 9.

As shown in FIG. 7, the main exothermic agent 3 has a small hole in the center, and the ignition agent 4 is provided on the circumference of the small hole. These are integrated by press molding or the like. In the center of the small hole, as shown in FIG. 8, a hard steel plate 22 having an H-shaped small hole is fixed by being sandwiched between the container 2 and the main exothermic agent 3 with an iron fixing tool 23. has been done. By inserting a flint round rod 24 (approximately 2 mmφ) taken out from inside the container 1 into the H-shaped small hole and causing friction, a spark is generated, the ignition agent 4 is ignited, and then the main The exothermic agent burns. A handle 25 may be attached to the flint if necessary.

Another method of starting a fire using a flint is to fix the flint and insert a file-like stick to generate sparks.

As the heat insulating material provided below the heating element, fibrous materials such as silica, alumina, and magnesia, powders, and compacts can be used. For example, ceramic fibers, silica boards containing SiO ₂ or CaO as main components, water slag, rock wool, or glass wool are used. Note that a ceramic material with excellent heat resistance is suitable for the area immediately adjacent to the heating element, and an inexpensive rock wool, glass wool, etc. with poor heat resistance is suitable for the lower part.

FIG. 10 illustrates a structure in which the counter sink 28 at the bottom of the container is deepened and the bottom caulked portion 26 is covered with a heat insulating material 27. In this case, in addition to the above-mentioned heat insulating materials, paper, plastic, cloth, etc. can be used as the heat insulating material.

Heat from the heating element is transmitted through the metal container and then to the caulked part at the bottom of the container. When the container with the heating device according to the present invention is placed on a tabletop or the like due to this heat, there is a high possibility that the tabletop will deteriorate in quality, especially if the container is operated incorrectly. In order to prevent this, the counter sink 28, which is about 3 mm in normal can manufacturing, is set at 5 to 10 mm.
By covering the caulking portion 26 with a heat insulating material 27 such as plastic, paper, cloth, etc., safety is greatly improved.

[Example] Examples will be described below.

Example 1 Container and object to be heated Container: Container with the structure shown in Fig. 1 (φ84 mm x
H150mm) Fix the igniter shown in Figure 6 to the back of the can top lid with adhesive tape.

Items to be heated: 65g instant noodles, soup, 10g ingredients, water
310ml Heating element Main heating agent: Iron oxide (Fe ₂ O ₃ ) powder 56g, Ferrosilicon (80% silicon, 20% iron) powder
24g mixture.

Ignition agent: a mixture of 0.5 g powder of 12% by weight boron, iron oxide and a small amount of barium peroxide 88% by weight.

Lighter: Lighter as shown in Figure 6 using a mixture of red phosphorus and potassium chlorate.

Insulation: Approximately 5mm of the heating element is silica/alumina fiber, and below that is approximately 20mm of glass wool.

Result: The top lid of the can was opened, the igniter was taken out, the igniter was inserted from the bottom of the can, water was poured, and the thin wire 17 of the igniter was pressed to burn the igniter and the main exothermic agent. As a result, the heated object heated up after about 3 minutes.
It was possible to raise the temperature to 100℃. The restoration of this instant noodle was superior to that of instant noodles cooked by pouring boiling water, and the taste was also exceptional.

Example 2 Container and object to be heated Container: The container shown in FIG. 2, with the heating element storage container having a structure as shown in FIG. 7. Note that iron with a thickness of 1.5 mm was used as the metal disk.

Items to be heated: 65g of instant noodles, 10g of soup and ingredients, water
310ml Heating element Main heating agent: Iron oxide (Fe ₂ O ₃ ) powder 56g, Ferrosilicon (75% silicon, 20% iron) powder
24g mixture.

Ignition agent: a mixture of 0.5 g powder of 12% by weight boron, iron oxide and a small amount of barium peroxide 88% by weight.

Lighter: A lighter using a hard steel plate and a flint as shown in FIGS. 8 and 9, and the flint is placed inside the plastic container 12.

Insulation: Approximately 10mm of the heating element is alumina-based insulation, and below that is approximately 15mm of rock wool.

Results: The top lid of the can was opened, water was poured in, the flint contained in the plastic container that floated to the surface was taken out, and the flint was inserted from the bottom of the can to burn the igniter and main exothermic agent. As a result, the heated object heated up after about 3 minutes.
The temperature could be raised to 100℃.

Example 3 Container and object to be heated Container: The container shown in Fig. 2, with a deeper countersink (5 mm) as shown in Fig. 10, and a plastic heat insulating material of about 1 mm covered at the bottom crimped part.

Items to be heated: 65g of instant noodles, 10g of soup and ingredients, water
310ml Heating element Main exothermic agent: Same as Example 2.

Ignition agent: 0.5g of powder consisting mainly of aluminum, a small amount of boron, and copper oxide mixed with a small amount of barium peroxide.

Lighter: Same as Example 1.

Results: Open the top of the can, take out the igniter contained in the plastic container that floated to the surface after pouring water, insert it from the bottom of the can, and draw the thin line of the igniter to burn the ignition material and main exothermic agent. As a result, the temperature of the object to be heated could be raised to 100°C after about 3 minutes.

[Effects of the Invention] According to the container equipped with a heating device according to the present invention described above, there is a main heating element that is relatively difficult to ignite, has high safety, and has a bottom cost, and a small amount that is easy to ignite and is somewhat expensive. By installing a igniter in contact with the ignition agent to ignite the ignition device, or by installing a part of the igniter separately from the heating element, the heating element can be housed in a metal disk with good thermal conductivity. By installing the metal container internally in contact with the metal container, it combines with the insulation material to suppress heat conduction to the bottom. Furthermore, by deepening the counter sink at the bottom of the container and covering the caulked part of the can bottom with the insulation material, high energy density is achieved. While preventing danger due to incorrect operation of the above heating element,
It has become possible to provide containers with excellent cooking functions very quickly.

[Brief explanation of the drawing]

1 and 2 are cross-sectional views illustrating the basic structure of a container with a heating device according to the present invention, and FIGS.
The figure is a cross-sectional view showing the method of igniting device storage container device, FIG. 5 is a cross-sectional view when a metal disk is installed in the heating element storage container, FIGS. Figure 10 shows an example of a cross-sectional view in which the countersink is deepened and the caulked portion is covered with a heat insulating material. 1...Container, 2...Metal container, 3...Main exothermic agent, 4...Ignition agent, 5,21...Insulating material, 6,1
5-2...Small hole, 7...Lighter, 8...Top lid, 9
... Heated object, 10 ... Metal plate, 10-2 ... Lighter insertion hole, 10-3 ... Gas vent hole, 11 ...
Storage container, 11-2...Water inlet, 2...Plastic container, 13, 14...Flange, 15...Metal disk, 16...Cylinder, 17...Thin wire, 18...Thin tube, 19...Indentation , 20... Ignition agent, 22... Steel plate, 23... Fixing tool, 24... Flint, 25...
...Handle, 26...Caulking part, 27...Insulating material, 2
8...Counter sink.

Claims (1)

[Scope of Claims] 1. A main heating agent, which is a mixture of one or more metal oxide powders and one or more metals, metalloid metals, or alloy powders thereof, and A heating element consisting of an ignition agent that is a mixture of one or more metal oxide powders that are easier to ignite than the main heating agent in contact with the main heating agent, and one or more metals, semimetals, or alloy powders thereof; A metal container containing a heat insulating material with a small hole into which a igniter for igniting the igniter or a part of the parts constituting the igniter can be inserted is provided at the bottom of the heating element. 1. A container with a heating device, characterized in that a igniter having a structure that can be inserted into the igniter, or a part of the parts constituting the igniter, is attached at a location apart from a heating element of a container for storing objects to be heated. 2. The container with a heating device according to claim 1, wherein the igniter or a part of the parts constituting the igniter is installed in the upper part of the container for storing objects to be heated. 3. The igniter or a part of the parts constituting the igniter is stored in a bottomed thin tube-shaped storage container with a water inlet on the side of the heated object storage container, and the storage container is approximately inside the container. 2. The container with a heating device according to claim 1, wherein the container is attached vertically. 4. A metal disk with good thermal conductivity, which serves as a guide when inserting the igniter and has two or more small holes for gas release, is placed in the middle upper part of the heat insulating material layer in the metal container in which the heating element is housed. The container with a heating device according to claim 1, 2 or 3, wherein the container is installed in contact with the inner wall of the container. 5 Counter sink at the bottom of the container is 5mm to 10mm
5. A container with a heating device according to claim 1, wherein the bottom caulked portion is covered with a heat insulating material.