JP2565312Y2 - Food heating insulated container - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a food heat insulation container, and more particularly to a food heat insulation container having a function of heating and keeping the contents.

[0002]

2. Description of the Related Art A portable food container with a lid having a space for storing food is conventionally known. In recent years, various heating materials and cooling agents have been developed. Therefore, a food container with a heating function having a structure in which the heating material or the like is integrally stored in the food container has been developed. This food container with a heating function is represented by a book-shaped lunch box that is easy to carry around,
As its configuration, it comprises an aluminum food storage container, a water container, and a heat generating means that can be mounted. As the heat generating means, a heat generating material that generates heat by the action of water is typically used.
When warming the contents, attach a heating cartridge containing a water-sensitive heating substance as a heating means under the food storage container, and pour the water in the water container, the water will generate heat in response to the heating substance, The heat is transmitted to the food in the container, and the food in the container warms in about 15 minutes. Typically, a chemical substance such as quick lime is used as a water-sensitive heat-generating substance as a material for generating heat, and a chemical reaction of the water and quick lime that generates heat is used as a heating means.

[0003]

As described above, in a conventional food container with a heating function, typically, a chemical reaction involving the heat generation of a water-sensitive heat-generating substance between quick lime and water is used to form the inside of the container. The food was heated. However, in this method, the food storage container is durable and can be used repeatedly. However, once the heating means reacts and generates heat, it is difficult to regenerate the food storage container, and there is a drawback that the food storage container is disposable. In addition, quick lime generates a rapid chemical reaction even if it has a large amount of heat of reaction and generates heat, so that the heat-generating part temporarily becomes hot.Also, quick lime is a strong alkaline substance and if erroneously eats it, it is harmful to the human body There was a problem in handling. Therefore, in the past, there was a problem of disposal treatment due to disposable heating materials, inconvenience such as purchase of heating material pads and replacement spares, and care must be taken when handling heating materials in terms of ensuring safety. Was.

The present invention has been made in order to solve the above-mentioned problems, and is intended to provide a food heating / insulating container having a heating / insulating function, which is made of a material which is less dangerous in handling and which is safe for the human body. It is an object of the present invention to provide a food heating and insulated container that uses a heat-generating material pad that can be used repeatedly and that can easily regenerate the heat-generating material pad.

[0005]

According to the invention, there is provided a food heating and heat retaining means comprising: a food container for storing food; a heating means disposed below the food container to generate heat of adsorption by adsorbing water; A heat-generating means housing container for housing the heat-generating means, wherein the heat-generating means housing container has a water supply port for supplying water to the inside of the food heating and heat insulating container and a drain for discharging water to the outside of the food heating and heat insulating container. With mouth and
The food container and the heat generating means storage container are made of a microwave transmitting material.

[0006]

According to the present invention, there is provided a food heating and heat retaining container for storing a food container for storing food, a heat generating means disposed below the food container to generate heat of adsorption by adsorbing water, and the heat generating means. A heating means storage container, and the heating means storage container has a water supply port for supplying water to the inside of the food heating and keeping container and a drain port for discharging water to the outside of the food heating and keeping container. And the food container and the heat generating means storage container are made of a microwave transmitting material. Therefore, the food in the food container can be heated by supplying water to the heat generating means through the water supply port, and the heat generating means is regenerated by discharging the adsorbed water from the drain port and becomes usable again. The regeneration of the heat generating means can be performed by irradiating the whole food heating and heat retaining container with microwaves.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a cross-sectional view illustrating the configuration of a food heating and insulative container according to a first embodiment of the present invention. Further, FIG. 2 is an enlarged perspective view of a water supply container used for a heating unit of the food heating and heat retaining container according to the first embodiment shown in FIG. Referring to FIGS. 1 and 2,
The food heat insulation container is a food container 1 made of a material having good heat conductivity such as plastic for storing cooked rice or the like.
An auxiliary food storage container 2 for storing an auxiliary food placed on the food container 1, a heating material pad 5 stored and disposed under the food container 1 for utilizing heat of adsorption for heating; And a lid 3 for storing a heat generating material pad 5 for utilizing the heat generating material pad 5. The main food storage unit 101 is formed by the region of the food container 1 where the sub food storage container 2 is not formed, and the sub food storage unit 102 for storing side food such as side dishes is formed by the sub food storage container 2.

At a predetermined position on the lower edge of the heating material pad storage container 4, a heating start water supply port 10a for supplying water to start heating by the heating material pad 5 utilizing heat of adsorption.
And a drain 10b for discharging water when the heating material pad 5 is regenerated, and for supplying the heating material pad with water into the storage container 4, as shown by a dotted line, a heating start water supply port 10b.
The opening of the water supply container 20 is inserted into a. Water container 20
Is made of a flexible material such as vinyl or plastic, and has a main body portion 20a for storing water therein and a container stopper 20b attached to an opening to prevent water from flowing out from the main body portion 20a until use. Be composed.

The components such as the food container 1, the side food storage container 2, the lid 3, and the heating material pad storage container 4 are made of a microwave transmitting material having a small microwave loss, such as plastic. As a result, it is possible to regenerate the heating material pad 5 using the heat of adsorption, as will be described later, with microwaves using a microwave oven or the like, and to sterilize the container at the same time.

FIG. 3 is a plan view of a heat generating material pad utilizing the heat of adsorption of the food heating and insulated container according to the first embodiment shown in FIG. 1, and FIG. 4 uses the heat of adsorption shown in FIG. It is a partial sectional view of a heating material pad. Referring to FIG. 3 and FIG. 4, the heating material pad 5 utilizing the heat of adsorption of this embodiment is made of a crystalline hydrous aluminosilicate (chemical formula: Na ₂ O.Al ₂ O).
_A heating material 60 made of a specific zeolite which is ₃ · mSiO ₂ · nH ₂ O) (m and n are arbitrary integers);
It comprises heating material containers 51 and 52 for storing the heating material 60. The heating material container upper portion 51 is formed of a material having a large number of minute holes through which moisture passes as water vapor when the heating material pad is regenerated. The heating material container lower portion 52 is supplied from the outside when the heating material pad 5 starts to generate heat. It is formed of a material having a mesh shape in order to facilitate the adsorption of water.

Next, the operation of the heating material pad 5 utilizing the heat of adsorption shown in FIGS. 1, 3 and 4 will be described.
First, when the heating of the container storing the food is started, the opening of the water supply container 20 containing the water is connected to the heating start water supply port 10a.
And press it. Due to this pressing, water penetrates into the lower part of the heating material pad 5 and comes into contact with the heating material 60.
The contact of water with the heat generating material 60 by the water supply operation serves to generate heat of adsorption due to the adsorption of water. That is, the exothermic material 60 which has been molded and fixed instantly adsorbs water and generates heat during the adsorption reaction. After performing a water supply operation for supplying water to the heat generating material 60, the water supply container 20 pushed into the heat generation start water supply port 10a is removed.

In order to regenerate the heating material pad 5 after the heating of the food heating and insulated container by the heat generated by the heating material 60, the heating material pad 5 is heated as it is, and the adsorbed moisture is evaporated and removed. Cool and store so as not to absorb moisture.

[0014] typical example of the heat generating member 60 used in this embodiment, crystalline hydrated aluminosilicate that zeolite (Formula _{Na 2 O · Al 2 O 3} · mSiO 2 · nH
₂ O) (m, n is the heat storage material having a structure of any integers). In this case, the heat storage material adsorbs about 20% of water per mass of zeolite and has a calorific value of 150 kcal / kg. After the heat generation, the adsorbed moisture is removed by evaporation at a temperature of 300 ± 30 ° C., and the dried zeolite is in a state where only the heat of adsorption is stored.

By incorporating the heat generating material pad 5 utilizing the heat of adsorption into the food heating and heat insulating container as shown in FIG. 1, the heat generating material pad 5 is stored in the main food storing portion 101 based on a water supply operation to the heat generating material pad 5. Cooked rice and side food storage unit 102
The side dishes and the like stored in are heated.

In the case of regenerating the heating material pad 5 after use, since the constituent material of the food heating and insulating container is made of a material such as plastic which transmits microwaves, the heating material is heated by microwave using a microwave oven or the like. It is possible to regenerate by heating the pad 5. The heat generating material pad 5 utilizing this heat of adsorption generally generates 150 kcal / kg of heat due to the adsorption of gaseous moisture, and the heat generated by direct water adsorption is sufficient to heat the food.

FIG. 5 is a cross-sectional view illustrating the configuration of a food heating and keeping container according to a second embodiment of the present invention. Referring to FIG. 5, this second embodiment is used when it is not necessary to heat fruits or cold foods stored in the side food storage unit 102 formed by the side food storage container 2 or when heating is not necessary. In this structure, the heat of the heating material pad 5 utilizing the generated heat of adsorption is transmitted only to the bottom surface of the main food storage unit 101.

That is, the heating material pad 5 utilizing the heat of adsorption is disposed so as to be located only on the bottom surface of the main food storage unit 101, and the heating material pad 5 utilizing the heat of adsorption is not located in the heating material pad storage container 4. The space is filled with water-insulating heat-insulating fibers 6, and has a structure in which a heating material pad 5 utilizing heat of adsorption is fixed.

FIG. 6 is a cross-sectional view showing the configuration of a food heating / insulating container according to a third embodiment of the present invention. Referring to FIG. 6, the third embodiment is similar to the second embodiment shown in FIG. 5, except that the heat generating material pad 5 utilizing the heat of adsorption is installed on the inner surface of the heat generating material pad storage container 4. Water resistant insulation sheet 7
This is a structure in which the heat generated by disposing is spread to the food container 1 without being diffused to the outside.

FIG. 7 is a cross-sectional view showing the configuration of a food heating / insulating container according to a fourth embodiment of the present invention. Referring to FIG. 7, in the fourth embodiment, fitting outer peripheral wall 12 for fitting food container 1 and heating material pad storage container 4 that stores heating material pad 5 utilizing heat of adsorption, The food container 1 and the heat-generating material pad storage container 4 can be attached and detached by providing a structure 13 and tightening the protrusions 11a.

In the above-described first to fourth embodiments, the constituent material of the food heating and heat insulating container is a molded product having a microwave-permeable material such as plastic or ceramic having a low heat loss temperature of about 300 ° C. With this configuration, when the heat generating material pad 5 is reproduced, the heat generating material pad 5 can be regenerated to a heat storage state in which moisture is not adsorbed by dielectric heating using a microwave such as a microwave oven.

On the other hand, in the fifth embodiment, an example of regenerating a heating material pad by heating without using dielectric heating will be described. FIG. 8 is a cross-sectional view showing a configuration of a food heating and keeping container according to a fifth embodiment of the present invention. In the fifth embodiment, the heating material pad 5 is regenerated by using heating by an electric heater as compared with dielectric heating by microwaves. That is, the constituent material of the food heating / insulating container is made of a metal such as aluminum or stainless steel, and 250 mm is provided between the heating material pad 5 using the heat of adsorption and the bottom surface of the heating material pad storage container 4.
A sheet heater 14 having a temperature characteristic of up to 350 ° C. is installed. The heating material pad storage container 4 has a structure in which a heating connection terminal 15 for regeneration and a cord 16 can be connected.

The heating / regenerator for regenerating the heating material pad 5 utilizing the heat of adsorption according to the present embodiment may have a cassette type set structure.

As described above, in this embodiment, the food container can be heated and kept warm by repeatedly using the heating material pad without disposable use of the food container and the heating material pad. By using dielectric heating by electric heating and heating by an electric heater, rapid regeneration is possible, and at the same time, food containers can be sterilized. Becomes possible.

Further, by using the heating material pad which generates heat of adsorption by the adsorption reaction of the present embodiment, heat can be stored for a long time in a closed storage state without absorbing moisture, and heat can be generated when desired. No corrosion deterioration is caused by the adsorption of water, and a long life is ensured by recycling. Further, the specific zeolite used for the heat generating material is considered to be a substance that is safe for the human body.

In the above embodiment, the mechanism for heating and keeping the cooked food in the case where the food heating and keeping container is used as a typical lunch box is illustrated. It is also possible to use for heating and keeping warm. Further, the shape of the food stored in the food container is not limited to a solid food, but may be a liquid or a fluid such as miso soup and soup.

[0027]

According to the present invention, a water supply port for supplying water to the inside of the food heating and heat retaining container and a drain port for discharging water to the outside of the food heating and heat retaining container are provided in the heat generating means storage container. Is provided. For this reason, the food can be heated and heated simply by supplying water from the outside of the food heated and heated container through the water supply port. Therefore, the food heating and heat retaining container does not need to have a complicated configuration in order to adsorb water to the heat generating means to generate heat, and, by carrying only water, it is possible to heat and maintain food anywhere by carrying only water, It is possible to provide a food heating / insulating container excellent in outdoor performance. Further, the food container and the heat-generating means storage container are made of a microwave transmitting material, and the heat-generating means storage container is provided with the above-mentioned drain port. From this, it is possible to regenerate the heating means by performing dielectric heating using microwaves or other microwaves without disassembling the food heating and heat retaining container. Therefore, the heat generating means can be easily and rapidly regenerated, and the food container and the heat generating means storage container can be sterilized and dried simultaneously with the regenerating of the heat generating means.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view illustrating the configuration of a food heating and keeping container according to a first embodiment of the present invention.

FIG. 2 is an enlarged perspective view of a water supply container used for a heating unit of the food heating and heat retaining container according to the first embodiment shown in FIG. 1;

FIG. 3 is a plan view of a heat-generating material pad that uses heat of adsorption and constitutes a heat-generating unit of the food heating and insulated container according to the first embodiment shown in FIG.

FIG. 4 is a partial cross-sectional view of a heat-generating material pad using heat of adsorption, which constitutes a heat-generating means of the food heat-insulating container according to the first embodiment shown in FIG.

FIG. 5 is a cross-sectional view illustrating a configuration of a food heating and keeping container according to a second embodiment of the present invention.

FIG. 6 is a cross-sectional view showing a configuration of a food heating and keeping container according to a third embodiment of the present invention.

FIG. 7 is a cross-sectional view showing a configuration of a food heating and keeping container according to a fourth embodiment according to the present invention.

FIG. 8 is a cross-sectional view illustrating a configuration of a food heating and keeping container according to a fifth embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Food storage container 2 Side food storage container 3 Lid 4 Heating material pad storage container 5 Heating material pad using adsorption heat 6 Waterproof heat insulating fiber 7 Heat insulating sheet 10a Heat generation start water supply port 10b Drainage port 11 Food container 11a Projection 12 Fitting Outer peripheral wall 13 Fitting outer peripheral wall 14 Sheet heater 15 Heating connection terminal for regeneration 16 Cord 20 Water supply container 20a Water supply container main body 20b Water supply container plug 51 Heating material container upper part 52 Heating material container lower part 60 Heating material 101 Main food storage part 102 Side food storage unit In each drawing, the same reference numerals indicate the same or corresponding parts.

Claims (1)

(57) [Scope of request for utility model registration] 1. A food container for storing food, a heat generating means disposed below the food container and generating heat of adsorption by absorbing water, and a heat generating means storage container for storing the heat generating means. A food heating / insulating container, wherein the heat generating unit storage container includes a water supply port for supplying water to the inside of the food heating / insulating container, and a drain port for discharging water to the outside of the food heating / insulating container. The food container and the heat generating means storage container are food heat insulation containers made of a microwave transmitting material.