JP2021122714A - Hot-water bottle having latent-heat storage agent contained therein and method for producing the same - Google Patents

Abstract

To provide a hot-water bottle having latent-heat storage agent contained therein, comprising erythritol as the main component, and applicable to microwave oven and an electromagnetic induction heating system, and to provide a method for producing the same.SOLUTION: Inside a hot-water bottle of a non-contact heating type applicable to electromagnetic induction 3c and microwave oven, a latent-heat storage agent 2a having erythritol as the main component is provided, or the latent-heat storage agent 2a is made to contain a magnetic material 3b, so that efficient and safe heating is achieved and the constant temperature is maintained for a long time.SELECTED DRAWING: Figure 3

Description

Detailed description of the invention

The present invention relates to a hot water bottle that can be heated in a microwave oven, and is characterized by incorporating a latent heat storage agent and water in the hot water bottle, and a method for producing the hot water bottle.

The present invention relates to a hot water bottle capable of electromagnetic induction heating, which is characterized in that a latent heat storage agent and a magnetic substance are incorporated in the hot water bottle, and a method for producing the hot water bottle.

The latent heat storage agent built in the present invention stores heat (heat storage) when changing from a solid to a liquid by heating, and releases heat (latent heat) when changing from a liquid to a solid by cooling. It keeps warmth by using.

The latent heat storage agent built into the above-mentioned hot water tank is divided according to the operating temperature range and the temperature retention maintenance time. It is filled with a heat storage agent or a latent heat storage agent containing mannitol as a main component and a heat storage agent containing a mixture of erythritol and mannitol as a main component.

The material of the hot water bottle of the present invention is a high-temperature heat-resistant resin molded product such as syndiotactic polystyrene or a crystalline olefin polymer containing 4-methylpenten-1 as a main raw material in a high temperature region, and is loaded and pressed. It is characterized by being a material that can withstand high temperatures sufficiently.

The material of the hot water bottle container of the present invention may be polypropylene resin at 100 ° C. or lower, but is characterized in that it is limited to use in a low temperature range because the safe allowable temperature range is small.

Traditionally, there is a hot water bottle as a heating device that warms the body by pouring boiling water into a container and plugging it. The materials of the containers used include pottery, metal and plastic.

As a heat storage agent, there is a latent heat storage agent containing sodium acetate as a main component, and there is a heat storage agent that heats a hot water bottle container with a microwave oven.

The heat retention temperature of the above-mentioned latent heat storage agent containing sodium acetate as a main component is about 50 ° C. to 60 ° C., and if it is followed in chronological order, the latent heat reaction gradually deteriorates and a long-term heat storage effect cannot be obtained.

It has been reported that a latent heat storage agent containing sodium acetate as a main component breaks a bag in a microwave oven if it is heated too much when heated in a microwave oven.

The latent heat storage agent containing sodium acetate as a main component takes a heating time of 4 minutes or more, and the number of times of use is limited due to deterioration of the heat storage agent.

There are storage-type hot water bottles on the market, but there are heat storage-type hot water bottles that take 10 to 12 minutes to charge and keep warm for 6 to 7 hours after charging. However, the material of the container of the hot water bottle body is polyvinyl chloride (PCV), and although it is strong, it is highly toxic and has a strong odor.

The rechargeable hot water bottle weighs 1.8 kg or more, has a thickness of 8 cm or more, and has a narrow heat-resistant temperature tolerance.

It is a large-capacity rechargeable body warmer with a capacity of about 5200 mAH, and there is an electric hot water bottle with USB that uses a mobile battery, but it takes 3 to 4 hours to charge, 9 to 10 hours with a USB adapter, and the number of durable uses is about 500 times. And few.

Hot water bottles containing sodium acetate as the main component are on the market as latent heat storage agents, but hot water bottles using latent heat storage agents containing myoban as the main component and food-derived latent heat storage agents containing erythritol or mannitol as the main components are not on the market. In addition, it is non-toxic, flame-retardant, and safe because it is a latent heat storage agent derived from food.

There is no hot water bottle on the market that has a durability of 2000 times or more and is lightweight, flat, and thin.

Erythritol's latent heat agent is mentioned in Practical New Design Registration No. 3177022, but erythritol alone is the main component of erythritol on the market because it does not react to microwaves in microwave ovens and it is difficult to stabilize heat generation. There is no latent heat storage agent product.

There is also a method of encapsulating metal fibers, but if there are metal fibers, it causes abnormal heating in a microwave oven, and it is dangerous to actually deal with them, and it is not possible to fill a narrow space.

Utility model registration No. 3177022

Utility model registration No. 3177022 mentions the latent heat agent of erythritol, but erythritol alone does not react to microwaves in the microwave oven, so it cannot be overheated in the microwave oven. There was no product that could react to the microwave of a microwave oven and enable stable heating by adding a small amount of water component.

Utility model registration No. 3177022 describes a latent heat storage agent for erythritol, but does not mention the method using electromagnetic induction heating. In addition, there is a conventional method of incorporating metal fibers, but in order to fill a narrow space, a non-magnetic coil cutting method is used to make 30μ to 40μ aluminum metal fibers highly flexible and have good heat conduction. Otherwise, the effect of shortening the heating time of electromagnetic induction heating cannot be obtained.

There is a hot water bottle that supplies boiling water, but it is dangerous to use because there is a risk of burns during hot water supply and a slight leak of hot water.

A latent heat storage agent containing sodium acetate as a main component has a low heat retention temperature range and has difficulty in repeated durability, and a latent heat storage agent other than sodium acetate as a main component is required.

Generally, hot water bottles on the market weigh more than 4 kg in the hot water supply type, are heavy in weight, and are difficult to handle in terms of height and size.

Means for the invention to be solved

In hot water bottles, handling safety is the first priority, and hot water is poured, or the latent heat storage agent is exposed to high temperature and leaks from the broken bag of the container, the hot water bottle body heated to high temperature is touched by hand, and there is a problem of low temperature burns. It needs to be emphasized.

Therefore, the material of the hot water bottle is a high-temperature heat-resistant resin molded product such as syndiotactic polystyrene or a crystalline olefin polymer containing 4-methylpenten-1 as the main raw material, which is sufficient for weighting, pressurization, and high temperature. It is characterized by being a material that can withstand, but it is provided with a plurality of bridge structure columns inside to further support pressure resistance.

The entire surface of the heat-resistant resin container filled with the latent heat storage agent is coated with a foamed ceramic heat insulating paint, and the outer periphery of the container is covered with a melamine resin foam heat insulating material or a wet suit cloth having fine bubbles of chloroprene rubber, nylon, and tet. Therefore, it is possible to maintain the temperature and maintenance time of the hot water bottle and prevent low-temperature burns.

The invention's effect

According to the present invention, if a high-density latent heat storage agent is incorporated in a hot water bottle and placed in a hot water bottle as it is, the amount of heat storage per unit of the high-density latent heat storage agent is 5 times or more that of water. A small volume hot water bottle can be provided.

In the present invention, if a magnetic material is incorporated in a latent heat storage agent in a hot water bottle, it can cope with electromagnetic induction overheating, and can be heated by directly applying it to an IH cooker.

The material of the hot water bottle used in the present invention is a high-temperature heat-resistant resin molded product such as syndiotactic polystyrene or a crystalline olefin polymer containing 4-methylpenten-1 as a main raw material, and is a highly heat-resistant resin such as a weight. This molded product can withstand high temperatures from 150 ° C to 230 ° C.

The highly heat-resistant resin molded product of the hot water bottle used in the present invention can be safely used by providing a bridge of a plurality of reinforcing columns having a sealing property and a wall thickness so as to withstand high pressure, high temperature, and load.

The latent heat storage agent used in the present invention is a latent heat storage agent containing myoban as a main component at 80 ° C to 95 ° C, and a latent heat storage agent containing erythritol as a main component or a latent heat storage agent containing mannitol as a main component at 100 ° C or higher. , And a heat storage agent containing a mixture of erythritol and mannitol as a main component. Food additive grade, safe, non-toxic, non-flammable and environmentally superior.

The heating time in the microwave oven and the IH cooker, which is the electromagnetic induction heating in the present invention, is efficient because the heating can be completed in a short time within 30 seconds to 2 minutes.

Body perspective view of hot water bottle with built-in latent heat storage agent A1-A1 microwave oven compatible hot water bottle with built-in latent heat storage agent Enlarged cross-sectional view B1-B1 Electromagnetic induction heating compatible hot water bottle enlarged cross section C1-C1 Electromagnetic induction heating compatible hot water bottle with built-in metal fiber Enlarged cross section

[Fig. 1] 1a of Example 1 of the present invention is a high-temperature heat-resistant resin such as syndiotactic polystyrene or a crystalline olefin polymer containing 4-methylpenten-1 as a main raw material, which is a base material of a hot water bottle body. The whole base material perspective view of a flat and thin hot water bottle which is a molded product and is a molded product of a highly heat-resistant resin such as a weight and can withstand a high temperature of 150 ° C. to 230 ° C. is shown.

As shown in [Fig. 2], Example 2 of the present invention is a hot water tank compatible with a microwave oven in a heat-resistant resin container 1a, and the latent heat storage agent 2a incorporated in the container is mainly myoban at 80 ° C. to 95 ° C. A latent heat storage agent as a component, a latent heat storage agent containing erythritol as a main component, a latent heat storage agent containing mannitol as a main component, and a heat storage agent containing a mixture of erythritol and mannitol as a main component are filled at 100 ° C. or higher. Food additive grade, safe, non-toxic and non-flammable. A plurality of reinforcing bridges 2c corresponding to negative pressure and positive pressure are provided inside the container to suppress deformation of the heat-resistant resin container. A foamed ceramic heat insulating material 2b or the like is applied to the entire outer surface, and the outer surface of the heat-insulated hot water bottle is covered with a wet suit cloth 2d coated with fine bubbles. By covering the hot water bottle body with a foamed ceramic heat insulating material 2b and a wet suit 2d with fine bubbles, accidents such as low temperature burns can be suppressed as much as possible. The hot water bottle covered with a wet suit can be kept warm at 70 ° C. or higher for about 7 hours by putting it in the microwave as it is and heating it within 30 seconds to 2 minutes. Since the temperature of the hot water bottle body at the end of heating in the microwave oven does not exceed 40 ° C., it can be safely taken out from the microwave oven, and the temperature of the initial hot water bottle body is moderately increased to improve the safety in handling.

[Fig. 3] of Example 3 is an enlarged cross-sectional view showing a structure in which a hot water bottle is heated and kept warm on a plate surface 3c of an electromagnetic induction heating method, and is an example in which a magnetic metal 3b is further incorporated in the structure of Example 2. Is. The magnetic metal may be any of a magnetic SUS plate, a magnetic SUS punching plate, a magnetic wire mesh, and a metal sprayed plate such as alumina. As a result, electromagnetic induction heating is possible, and the latent heat storage agent contained in the hot water bottle can be kept at about 90 ° C. and 70 ° C. or higher even after 7 hours in 1 to 2 minutes. At this time, a gap is provided with a carbon fiber rod 3a or a zircon sphere so that the magnetic metal does not come into direct contact with the base material of the hot water bottle body, and the high temperature during electromagnetic induction heating adversely affects the dissolution of the latent heat storage agent 2a. It is configured not to.

Example 4 is an example in which 30 μ to 40 μm of coil-cut aluminum ultrafine metal fiber 3b is built in for the purpose of expanding the contact area with the built-in latent heat storage agent 2a in order to improve the heating efficiency during electromagnetic induction heating. The heated heat from the magnetic metal 3a can be evenly conducted to the latent heat storage agent 2a in a narrow hot water bottle space by a more efficient method.

Possibility of industrial use

According to the present invention, there is no danger of pouring hot water, it is light and thin, it can be used in a microwave oven or an electromagnetic induction heater, and the heating time is about several tens of seconds to two minutes.

Since the latent heat storage agent of the present invention is a food additive grade, it is nontoxic, nonflammable, and safe, so that it can be used in general households and medical applications, and it is efficient and safe heat retention can be achieved in the medical field.

The material of the hot water bottle of the present invention is a high-temperature heat-resistant resin molded product such as syndiotactic polystyrene or a crystalline olefin polymer containing 4-methylpenten-1 as a main raw material, and has an allowable range in the operating heating temperature range. It is possible to further ensure safety that the material is large and can withstand heavy load, pressurization, and high temperature.

The material of the hot water bottle of the present invention is a high-temperature heat-resistant resin molded product such as syndiotactic polystyrene or a crystalline olefin polymer containing 4-methylpenten-1 as a main raw material, and the temperature at the time of heating is raised. It is possible to keep the heat storage agent at a high temperature for a long time while eliminating the possibility of low temperature burns because it is possible to insulate the heat storage agent with a thin material. A thin hot water bottle can be easily realized.

1a ・ ・ ・ Main body base material Heat-resistant resin container 1b ・ ・ ・ Hot water bottle handle 2a ・ ・ ・ High-density latent heat storage agent 2b ・ ・ ・ Insulation paint layer 2c ・ ・ ・ Reinforcing bridge (corresponding to negative pressure and positive pressure)
2d ・ ・ ・ Wet suit fabric (melamine resin foam insulation)
2e ・ ・ ・ Microwave stand 3a ・ ・ ・ Carbon fiber rod for reinforcement 3b ・ ・ ・ Magnetic metal 3c ・ ・ ・ Electromagnetic induction heating plate surface 3d ・ ・ ・ Non-magnetic coil cutting metal fiber

Claims (3)

A hot water bottle that is heated using a microwave oven. It has a built-in latent heat storage agent with a small amount of water added inside, and has a structure in which the surroundings are covered with foamed ceramic or heat insulating paint, and it takes a long time while preventing low-temperature burns. A hot water bottle characterized by being able to maintain heat retention and a method for producing the hot water bottle. A hot water bottle that is heated by an electromagnetic induction heating cooker, which has a built-in latent heat storage agent, a structure in which the circumference is covered with foamed ceramic or heat insulating paint, and the magnetic metal does not come into direct contact with the inner wall of the container. A hot water bottle and a method for producing the hot water bottle, which is built in by using the isolation means of the hot water bottle and can be heated in a short time and kept warm for a long time while preventing low-temperature burns. According to claim 1 or 2, the periphery is covered with a melamine resin foam, or the periphery is further covered with a fine bubble cloth used for a wet suit, or the periphery is further covered with artificial spider silk fibers. , A hot water bottle characterized by good heat retention and good skin contact, and a method for producing the hot water bottle.

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