JPH0460645B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a liquid heater for heating water, other liquids such as alcoholic beverages and milk in a container.

Traditionally, cooking utensils such as boilers and pots are used to heat water and other liquids such as alcohol and milk.
This was done using gas stoves, electric heaters, and other heating methods.

Therefore, when hot water was needed in the absence of electricity, gas, coal, kerosene, alcohol, charcoal, or other fuels, for example, when outdoors, the only option was to bring hot water in a thermos or other thermos.

However, warmers such as thermos flasks are bulky, heavy, and cumbersome, and the temperature of the boiling water in them drops significantly over time, making it impossible to restore instant noodles. The water was often lukewarm.

By the way, if you put boiling water at 98 degrees Celsius in a small portable thermos flask, the temperature will drop to around 70 degrees Celsius after six hours, making it impossible to use the hot water for restoring this type of instant noodles.

The present invention was invented in view of the above-mentioned points, and it is an object of the present invention to provide a means for easily and quickly heating water or other liquid in a container whenever and wherever there is water or other liquid to be heated. That is what it is.

The configuration of the present invention will be described below.

That is, the gist of the present invention is that a cylindrical container made of a material that is thermally conductive, heat resistant, water resistant, non-porous, and non-reactive is loaded with an exothermic agent that generates heat upon contact with water. This liquid heater is characterized in that a water inlet that can be closed after injecting water in order to generate heat from an exothermic agent is disposed near the upper end of the cylindrical container.

Next, embodiments of the present invention will be described with reference to the accompanying drawings.

In the drawings, FIG. 1 is a sectional view of the liquid heater of the present invention, FIG. 2 is a sectional view taken along the line X-X of FIG. 1, and FIG. 3 is a perspective view of the heater of FIG. 1 with the lid removed. It is a diagram.

In these drawings, numeral 1 indicates the heater body;
2 is a cylindrical container, 3 is an exothermic agent that generates heat upon contact with water, 4 is a water inlet provided at the upper end of the cylindrical container, and 5 is a lid thereof.

Reference numeral 6 denotes a filter paper or other liquid guide member wrapped in a rod shape that is buried along the center or the center and the inner circumferential wall of the cylindrical container in the axial direction, covering almost the entire length, and is capable of quickly absorbing and permeating water. be.

Furthermore, 7 is tableware A such as teacups and glass cups.
This hook member extends outward from the vicinity of the upper end of the cylindrical container so as to be able to stably support the cylindrical container within the tableware by being locked to the periphery of the opening of the container, but it has the same purpose. As shown in FIG. 4, a locking lid 8 may be attached to the upper end of the cylindrical container, and although not shown, a locking member that abuts and supports the inner circumferential wall of the cylindrical container for the same purpose may also be used. do not have.

Here, the constituent material of the cylindrical container may be any material as long as it has excellent thermal conductivity, heat resistance, water resistance, air permeability, and non-reactivity, but exothermic agents such as calcium oxide may be used. It is preferable to use a material that plastically deforms without cracking or breaking due to the heat-induced volume expansion of calcium hydroxide produced by the reaction between the calcium hydroxide and water; for example, material made of aluminum alone or a composite sheet material of aluminum foil, plastic, and paper. is suitable.

Additionally, if the liquid guide member is buried not only in the center of the cylindrical container but also along the inner peripheral wall, it has the effect of somewhat mitigating the rapid rise in wall temperature due to heat generation and preventing crack formation due to expansion of the wall surface. Therefore, it is preferable.

The cross-sectional shape of the above-mentioned cylindrical container may be cylindrical, elliptical, prismatic, or any other shape, but the cross-sectional shape of the above-mentioned cylindrical container may be cylindrical, elliptical, _rectangular , etc.; (OH) ₂ +15.2kcal)
Since there is volume expansion due to reaction heat, a shape that can absorb the amount of volume expansion, such as a cylindrical shape, is desirable. In addition, if the cylindrical container 2 is made of a material with high rigidity that does not easily deform, the volume expansion may be absorbed by the pressure of the liquid guiding member 6.

In any case, it is necessary to effectively absorb the volumetric expansion due to the heat of reaction by the shape of the cylindrical container and the liquid guiding member, so that the cylindrical container is not damaged due to the volumetric expansion.

Next, the exothermic agent may be of any type, as long as it generates heat upon contact with water and does not emit gas harmful to food hygiene, but from the standpoint of calorific value, price, and hygiene. Calcium oxide (CaO) is preferred.

Regarding the amount of water that reacts with the exothermic agent, using calcium oxide (CaO) as an exothermic agent as an example, theoretically 1 mol of water (H ₂ O) is required for 1 mol of CaO. Since the reaction is just the right amount, add 18 grams of water to 56 grams of calcium oxide.
gram, so in the end, you should add about 1/3 of the amount of water to the amount of calcium oxide, but
The amount is adjusted to be a little less or a little more, taking into consideration the apparent volume and apparent density of the calcium oxide to be loaded into the cylindrical container.

The amount of heat generating agent to be loaded may vary slightly depending on the temperature of the liquid such as water to be heated, but theoretically, is approximately 320c.c., but it takes 28.8kcal to make 320c.c. of water to 90℃.
For example, if CaO is used as a heating agent, the amount of CaO required to obtain 28 kcal of heat is 106 grams, which is calculated from the chemical reaction equation described above. It may be determined as appropriate by considering the desired amount of liquid and the desired temperature, but it is practical to increase the amount a little when considering heat loss.

In addition, the volume of the cylindrical container is determined according to the volume of the product Ca(OH) ₂ produced by a given reaction,
For example, if the above amount of CaO is 106 grams, 140 grams of Ca(OH) ₂ will be produced, and the amount of Ca(OH) ₂ produced is converted to volume.
Since the volume is 62.5 cm ³ , the volume of the container to accommodate this needs to be at least 62.5 cm ³ or more. Therefore, it is preferable that the volume of the cylindrical container be made slightly larger than this in consideration of the amount of Ca(OH) ₂ produced by the predetermined reaction.

Note that FIG. 5 is a sectional view showing another embodiment of the water inlet of the liquid heater of the present invention, and FIG. 6 is a sectional view showing still another embodiment.

In these drawings, reference numeral 9 is a recess for preliminarily storing water to be poured into the cylindrical container, 10 is a stopper urged upward by a spring 11, and 12 is a screw It is.

The liquid heater of the present invention is constructed as described above, and one mode of its use will be explained as follows.

That is, the simplest mode of use is to insert the liquid heater 1 into a teacup or glass cup filled with water, open the lid or stopper 5 that closes the water inlet 4 at the top, and pour a predetermined amount of water into the cylindrical shape. Pour water into container 2 and plug it again. The injected water immediately reacts with the exothermic agent, such as CaO, in the cylindrical container 2 as shown in the following equation to generate reaction heat.

CaO + H ₂ O → Ca (OH) ₂ + 15.2 kcal After several minutes, all of the CaO is converted to Ca (OH) ₂ , and at this time, the inside of the cylindrical container is heated to over 100°C due to the amount of reaction heat generated. Due to the heat conduction, the water in a container such as a teacup or glass top is sufficiently heated to become hot water.

Note that the exact amount of water that is injected into the liquid heater of the present invention and reacts with the exothermic agent in just the right amount may be measured using the lid 5 in the embodiment shown in FIG. , as shown in FIG. 5 or 6, measure the added water to the upper end of the cylindrical container 2, store the added water in the recess 9 for preliminary accommodation, and then open the cap and pour the water into the cylindrical container. It may be configured so that the

In particular, the liquid heater according to the embodiment of the present invention shown in FIGS. 5 and 6 is a container-equipped instant noodle mass 13 with a hollowed-out center portion housed in a cup-shaped container B, as shown in FIG. In addition to being buried in the center of noodles and sealed inside a container, it is also ideal for storing in cup-shaped containers for instant food drinks such as soup and coffee.

The liquid heater of the present invention constructed and used as described above exhibits the following effects.

(1) The liquid heater of the present invention has an extremely simple structure and generates sufficient heat just by pouring water into it, so if you simply want to make hot water, all you need is a container and water. In particular, when eating instant food or beverages in cup-shaped containers outdoors, it is extremely easy to carry them with you and prepare them as long as you have water.

(2) Furthermore, the heat generation mechanism of the liquid heater of the present invention is based on a heat generating agent such as calcium oxide that generates heat when it comes into contact with water, and is not caused by fire or flammable fuel, so the danger is extremely low. , there is no risk of causing a fire, etc.
Anyone can use it easily and safely.

(3) Furthermore, before use, the liquid heater of the present invention is closed with a lid, stopper, screw, etc., so it is completely sealed off from the outside air, so it can be used without spontaneous heat generation due to moisture intrusion. The reaction between the exothermic agent and water is CaO + H ₂ O → Ca
(OH) ₂ , the reaction proceeds in an irreversible reaction system, and the presence of a liquid guiding member such as filter paper allows the added water to quickly permeate to the bottom of the cylindrical container, leaving no unreacted CaO behind. The reaction is completed, and almost 100% of the expected calorific value is obtained, which is extremely superior in terms of energy utilization.

(4) Furthermore, since the liquid heater of the present invention is equipped with a hook member or a lid near its upper end, when the device is used, the hook member or lid can be attached to the rim of a container such as a teacup, glass cup, or cup-shaped container. The container can be stably supported vertically within the container by being hooked onto the container, making it easy to pour water into the container.

(5) In addition, after using the liquid heater of the present invention, the cylindrical container becomes hot due to heat generation, but since it can be taken out from inside the container by holding the hooking member or the lid, there is no need to worry about getting burned. It is highly safe, and the exothermic agent inside the cylindrical container has completely reacted after use, and as mentioned above, it is not flammable, so it can be disposed of as is, or thrown away. No problem.

As described above, the liquid heater of the present invention has an extremely simple structure, is easy to use, and is extremely safe, and can be easily heated to hot water using only water, tableware, and a container such as a pot or glass top. It is a practical invention that can be widely used not only for heating sake and other liquids such as hot milk, but also as a heating means for eating and preparing instant foods in cup-shaped containers.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of the liquid heater of the present invention, FIG. 2 is a sectional view taken along the line X-X in FIG. 1, FIG. 3 is a perspective view of the heater in FIG. 4 is a perspective view of another embodiment, FIG. 5 is a sectional view showing another embodiment of the water inlet of the liquid heater of the present invention, and FIG. 6 is a sectional view showing still another embodiment. DESCRIPTION OF SYMBOLS 1... Heater body, 2... Cylindrical container, 3... Exothermic agent, 4... Water inlet, 5... Lid, 6... Liquid guiding member, 7... Hooking member, 8... Attachment Stop lid, 9...
... recess, 10 ... stopper, 11 ... spring, 12 ... screw, 13 ... instant noodle mass, A ... tableware, B ... cup-shaped container.

Claims (1)

[Scope of Claims] 1. A cylindrical container made of a material that is thermally conductive, heat resistant, water resistant, non-porous, and non-reactive, capable of quickly absorbing water and an exothermic agent that generates heat upon contact with water. A liquid guide member capable of permeating to the bottom of the cylindrical container is loaded, and a recess is formed near the top of the cylindrical container to preliminarily accommodate the poured water in order to generate heat from the exothermic agent, and the liquid is poured into the recess. 1. A liquid heater comprising a water inlet and a valve member having a spring interposed in the water inlet so that the water inlet can be closed after water is injected.