JP4715004B2 - Thermal storage method using a heating device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a heating device that is designed to be worn on the body, and relates to a method for storing heat by the heating device that can be heated to a state including heat by electromagnetic induction heating such as a microwave oven. .
[0002]
[Prior art]
2. Description of the Related Art Conventionally, as a heating tool that is heated by a microwave oven or the like and used for thermal treatment of the body, for example, a device as shown in Japanese Patent Application Laid-Open No. 2000-139987 is known. That is, this heating tool is configured by filling and encapsulating granular silica gel in a breathable bag.
[0003]
[Problems to be solved by the invention]
However, in the case of the above-mentioned conventional heating tool, since the granular material is put in the bag body, there is a disadvantage that the shape is not stable.
[0004]
Moreover, since the granular material is put in the bag body, the inconvenience of being bulky has occurred.
[0005]
In addition, since the silica gel particles are heavy, when used on affected areas such as the shoulder, the shoulders are stiff and the silica gel particles are hard, resulting in inconvenience that the skin feels bad and a comfortable feeling of use cannot be obtained. It was.
[0006]
The present invention has been made in view of such circumstances, and is a light-weight, thin, warm, excellent shape stability, and heat storage using a heating tool that can be used repeatedly and comfortably. It aims to provide a method .
[0007]
[Means for Solving the Problems]
In order to solve the above-mentioned problem, a method for storing heat with a heating tool of the present invention is a method for storing heat by electromagnetic induction heating in a heating tool that is capable of heating an affected part of a body. A hygroscopic fiber having a hygroscopicity of 30 g / m ² or more between the hygroscopic amount at 30 ° C. and a relative humidity of 50%, an air temperature of 20 ° C., and a relative humidity of 95% is sewn according to the appropriate part of the affected part of the body. It is a heating tool composed of a heating layer containing a hygroscopic fiber and a heat insulation layer containing a ventilation moisture-proof fiber, and using a heating tool that has a cylindrical shape with one end closed, Electromagnetic induction heating is performed with the heat retaining layer on the outside . Moreover, a crosslinked acrylate fiber is used as the hygroscopic fiber.
[0008]
Further, the method for storing heat by the heating tool of the present invention for solving the above-mentioned problem is a method of storing heat by electromagnetic induction heating in a heating tool that can warm the affected part of the body, A hygroscopic fiber having a hygroscopicity of 30 g / m ² or more in the difference in moisture absorption between the temperature of 20 ° C. and the relative humidity of 50% and the temperature of 20 ° C. and the relative humidity of 95% is provided. A heating device formed by processing, using a band-like heating device having a two-layer structure of a thermal layer containing hygroscopic fibers and a thermal insulation layer containing ventilation moisture-proof fibers, and the thermal insulation layer is outside In such a state, the substrate is rolled up in a roll shape so that the thermal layer exposed to the outside is stopped only at the upper spiral portion and subjected to electromagnetic induction heating. Moreover, a crosslinked acrylate fiber is used as the hygroscopic fiber.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0011]
FIG. 1 shows an outline of the overall configuration of the heating tool 1, and FIG. 2 shows a use state of the heating tool 1.
[0012]
That is, the heating tool 1 is configured by sewing hygroscopic fibers, and is configured to store the heat by the evaporation heat generated by electromagnetic induction heating so that the affected part of the body 2 can be warmed. ing.
[0013]
The heating tool 1 is formed in a band shape having a width of 10 cm and a length of 60 cm so that it can be hung on the shoulder along the neck of the body 2.
[0014]
The heating tool 1 is configured by sewing hygroscopic fibers into a sheet shape such as a knitted fabric or a nonwoven fabric.
[0015]
As the hygroscopic fiber constituting the heating tool 1, a hygroscopic fiber having a moisture absorption difference of 30 g / m ² or more between an air temperature of 20 ° C. and a relative humidity of 50% and an air temperature of 20 ° C. and a relative humidity of 95% is used. Is done.
[0016]
As such a hygroscopic fiber, for example, a hygroscopic acrylate fiber such as Beloasis (trade name) manufactured by Kanebo Co., Ltd., or a cross-linked acrylate fiber such as Moiscare (trade name) manufactured by Toyobo Co., Ltd. can be used. . FIG. 3 compares the moisture absorption rate at 20 ° C. and 65% RH between the crosslinked acrylate fiber (N-38S manufactured by Toyobo Co., Ltd.) and B-type silica gel used in a conventional heating tool. Moreover, FIG. 4 shows the time-dependent temperature change at the time of carrying out electromagnetic induction heating of both of these in the microwave oven (Matsushita Electric Co., Ltd. national microwave oven NE-KC66), FIG. 5 shows 20 degreeC and 65% RH after a heating. The time-dependent temperature change of these both in the constant temperature and humidity state is shown. That is, the cross-linked acrylate fiber has a moisture absorption rate that surpasses that of B-type silica gel, and can be heated substantially equivalently to B-type silica gel by electromagnetic induction heating. Moreover, also in the temperature holding capability after heating, the crosslinked acrylate fiber can exhibit substantially the same performance as B-type silica gel. Moreover, when compared with the same capacity, the heating tool 1 comprising the crosslinked acrylate fiber as a hygroscopic fiber is approximately 52 g lighter than the 260 g of B-type silica gel. The weight can be reduced to about 1/5.
[0017]
In the case of this crosslinked acrylate fiber, a specific example is a crosslinked acrylate fiber in which the increase in nitrogen content due to hydrazine crosslinking is 1.0% by weight to 8.0% by weight. 1.0 mmol / g to 4.5 mmol / g salt-type carboxyl group is introduced into the part, amide group is introduced into the remainder, the tensile strength is 1 g / d or more, the limiting oxygen index is 24 or more, and the sterilization rate is 90% or more of hygroscopic fibers are preferred.
[0018]
The cross-linked acrylate fiber has a nitrile group remaining in the hydrolysis by introducing a cross-linking bond to the acrylic fiber by hydrazine treatment to adjust the increase in nitrogen content within the range of 1 to 8% by weight. Can be obtained by introducing a carboxyl group into 1.0 mmol / g to 4.5 mmol / g, introducing an amide group into the remainder, and then converting the carboxyl group into a salt form.
[0019]
This crosslinked acrylate fiber, which is the best hygroscopic fiber, will be specifically described below.
[0020]
Examples of the raw fiber of the crosslinked acrylate fiber include fibers formed of an AN polymer containing acrylonitrile (hereinafter referred to as AN) of 40% by weight or more, preferably 50% by weight or more. Such raw material acrylic fibers may be in any form such as short fibers, tows, yarns, knitted fabrics, non-woven fabrics, and may be intermediate products or waste fibers. The AN polymer may be either an AN homopolymer or a copolymer of AN and another monomer. Other monomers include vinyl halides and vinylidene halides; (meth) acrylic acid esters; sulfonic acid-containing monomers such as methallyl sulfonic acid and p-styrene sulfonic acid and salts thereof; (meth) acrylic acid, itaconic acid, and the like And other monomers such as acrylamide, styrene, and vinyl acetate.
[0021]
As a method for introducing hydrazine crosslinking into the acrylic fiber, a method of treating at a temperature of 50 ° C. to 120 ° C. for 1 to 5 hours in a hydrazine aqueous solution having a concentration of 6% to 80% is preferable. The increase in the nitrogen content means increasing the nitrogen content of the hydrazine-crosslinked acrylic fiber as compared with the nitrogen content of the raw acrylic fiber. Examples of hydrazine include hydrazine hydrate, hydrazine sulfate, hydrazine hydrochloride, hydrazine nitrate, and hydrazine bromate.
[0022]
As a method of introducing a carboxyl group into 1.0 mmol / g to 4.5 mmol / g of the amount of nitrile groups remaining without being crosslinked by hydrazine by hydrolysis reaction, and introducing an amide group into the remainder, alkali metal hydroxide And a basic aqueous solution of ammonia and the like; a means of heat treatment in a state in which an aqueous solution of a mineral acid such as nitric acid, sulfuric acid and hydrochloric acid is impregnated, or in a state in which raw fiber is immersed in this aqueous solution. In addition, a hydrolysis reaction can also be performed simultaneously with the introduction of the crosslink. Moreover, when hydrolyzing with an acid, it is necessary to convert a carboxyl group into a salt form.
[0023]
As a method for converting the carboxyl group into a salt form, a method of immersing the above-described hydrolyzed fiber in various salt-type hydroxides or aqueous solutions of salts, followed by washing and drying is preferably used. Examples of the salt type of the carboxyl group include alkali metals such as Li, Na and K, alkaline earth metals such as Be, Mg, Ca and Ba, Cu, Zn, Al, Mn, Ag, Fe, Co and Ni. And organic cations such as NH ₄ and amine.
[0024]
Since this crosslinked acrylate fiber is excellent not only in hygroscopicity but also in moisture releasing properties, when the heating tool 1 composed of this crosslinked acrylate fiber is electromagnetically heated, the generated heat of evaporation easily escapes from the heating tool 1. Therefore, there is a concern that the heat of evaporation is less likely to be stored in the warming tool 1 as warm heat. Therefore, as the heating tool 1, as shown in FIG. 6, the heating tool 1 may be housed in a bag 3 and heated by electromagnetic induction. In this case, the heating tool 1 is put in the bag 3 and heated by electromagnetic induction to minimize the escape of heat of evaporation from the cross-linked acrylate fibers constituting the heating tool 1 and to provide the heating tool 1 with sufficient heat. Can store heat. In addition, as this bag body 3, when the heating tool 1 is electromagnetically induction-heated, especially if it can prevent that heat of evaporation escapes from this heating tool 1 and heat is stored, the raw material will be used. The shape and the like are not limited and may be a hard container or the like.
[0025]
Moreover, you may use the thing containing the ventilation moisture-proof fiber which has air permeability and moisture resistance in addition to the said bridge | crosslinking acrylate type fiber, without using such a bag body 3 etc. As this ventilation moisture-proof fiber, a polypropylene fiber, a polyester fiber, etc. are mentioned, for example. As the shape of the ventilation moisture-proof fiber, it is preferable to use a fiber having a large porosity such as a hollow fiber.
[0026]
This breathable moisture-proof fiber may be configured to constitute the heating tool 1 by simply mixing or blending with the above-mentioned crosslinked acrylate fiber, or as shown in FIG. It is also possible to use a two-layered heating tool 1a constituted by a thermal layer 11 containing a heat insulating layer 12 containing a breathable moisture-proof fiber.
[0027]
In the case of the two-layered heating tool 1a shown in FIG. 7, as shown in FIG. 8, when the heat insulating layer 12 is rolled up so that the heat insulating layer 12 is on the outside, the heating layer 11 exposed to the outside is It can be stopped only on the spiral part of the upper surface. Therefore, when electromagnetic induction heating is performed, it is possible to store a sufficient amount of heat in the heating tool 1a while minimizing the escape of evaporation heat from the heating layer 11. Moreover, when using it in contact with the affected part of the body 2, the affected part can be directly warmed by the heat stored in the heating tool 1a by contacting the surface of the thermal layer 11 with the skin.
[0028]
Moreover, as shown in FIG. 9, the two-layer structure of the said heat | fever layer 11 and the heat insulation layer 12 may comprise the heating tool 1b made into the cylinder shape which one end was closed. As shown in FIG. 10 (a), this heating tool 1b is heated by electromagnetic induction heating so that the heat retaining layer 12 is on the outside, thereby minimizing the escape of heat of evaporation from the heating layer 11. Thermal energy sufficient for 1b can be stored. In addition, as shown in 10 (c), the heating tool 1b after storing the heat can make the surface of the heat layer 11 come into contact with the skin by making the heat layer 11 outside. The affected part can be directly warmed by the heat stored in the warming tool 1b.
[0029]
Furthermore, since the crosslinked acrylate fiber constituting the thermal layer 11 is difficult to dye, it can be used as it is, but as described above, it can be used in a desired color by using it together with a ventilation moisture-proof fiber. The design can be improved.
[0030]
In addition, in this Embodiment, although the heating tool 1 used around the neck of the body 2 is described, as this heating tool 1, it is not limited to what is used especially around the neck, What was sewn and processed appropriately in accordance with the affected part of the body 2, such as for knees, can be used.
[0031]
The heating tool 1 is formed by sewing hygroscopic fibers into a sheet shape such as a knitted fabric or a nonwoven fabric, so that it has a good contact with the skin, can be made light and thin, has excellent shape stability, and conforms to the body. The shape can be changed.
[0032]
In addition, as shown in FIGS. 3 to 5, the heating tool 1 can obtain an excellent heating effect because the hygroscopic fiber can exhibit substantially the same performance as the B-type silica gel.
[0033]
Furthermore, when a breathable moisture-proof fiber is used in combination with the hygroscopic fiber, the heat storage effect of the hygroscopic fiber by electromagnetic induction heating can be enhanced, and a more excellent thermal effect can be exhibited.
[0034]
【The invention's effect】
As described above, according to the present invention, the heating device for warming the affected part of the body is constructed by sewing the hygroscopic fiber having hygroscopicity according to the appropriate part of the affected part of the body, so It is good, lightweight, thin, excellent in shape stability, and can be shaped along the body. Further, the hygroscopic fiber constituting the heating tool has a hygroscopicity in which the difference in moisture absorption between the temperature of 20 ° C. and the relative humidity of 50% and the temperature of 20 ° C. and the relative humidity of 95% is 30 g / m ² or more. Since it has sufficient hygroscopicity, it can generate sufficient heat of evaporation by electromagnetic induction heating, and can exhibit an excellent thermal effect.
[0035]
Further, according to the present invention, it is possible to prevent the escape of evaporative heat due to electromagnetic induction heating and to efficiently store the heat in the heating tool, and it is possible to exhibit a more excellent heat effect.
[Brief description of the drawings]
FIG. 1 is a perspective view showing an outline of the overall configuration of a heating tool according to the present invention.
FIG. 2 is a perspective view showing a usage state of the heating tool according to the present invention.
FIG. 3 is a graph comparing the hygroscopicity of hygroscopic fibers used in the heating device according to the present invention with B-type silica gel.
FIG. 4 is a graph showing temperature changes over time due to electromagnetic induction heating of hygroscopic fibers used in the heating tool according to the present invention and B-type silica gel.
FIG. 5 is a graph showing a change in temperature over time in a constant temperature and humidity state after electromagnetic induction heating of hygroscopic fibers used in the heating device according to the present invention and B-type silica gel.
FIG. 6 is a perspective view showing another embodiment of the heating tool according to the present invention.
FIG. 7 is a cross-sectional view showing still another embodiment of a heating tool according to the present invention.
8 is a perspective view showing a state of the heating tool according to FIG. 7 during electromagnetic induction heating.
FIG. 9 is a cross-sectional view showing still another embodiment of a heating tool according to the present invention.
FIGS. 10A to 10C are perspective views showing a use state of the heating tool shown in FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Heating tool 11 Heating layer 12 Thermal insulation layer 2 Body 3 Bag body (storage body)

Claims (3)

A method of accumulating heat by electromagnetic induction heating in a heating device capable of heating the affected part of the body,
A hygroscopic fiber having a hygroscopicity of 30 g / m ² or more in the difference in moisture absorption between the temperature of 20 ° C. and the relative humidity of 50% and the temperature of 20 ° C. and the relative humidity of 95% is provided. A heating tool configured by processing, having a two-layer structure of a heating layer containing hygroscopic fibers and a heat insulation layer containing ventilation moisture-proof fibers, and having a cylindrical shape with one end closed A method for storing heat with a heating tool, wherein the heating is performed by electromagnetic induction so that the heat insulating layer is on the outside. A method of accumulating heat by electromagnetic induction heating in a heating device adapted to warm an affected part of the body,
The difference in moisture absorption between an air temperature of 20 ° C. and a relative humidity of 50% and an air temperature of 20 ° C. and a relative humidity of 95% is 30 g / m. ² A heating device comprising the hygroscopic fiber having the above hygroscopic property, and configured to be sewn in accordance with an appropriate part of the affected part of the body, and a heat retaining layer including a thermal layer including the hygroscopic fiber and a breathable moisture-proof fiber Using a cloth-like heating tool that has a two-layer structure with a layer, the roll is rolled up so that the heat insulation layer is on the outside, and the thermal layer exposed to the outside is the upper spiral part A method for storing heat with a heating device, characterized by heating only by electromagnetic induction heating. The method for storing heat with a heating device according to claim 1 or 2, wherein a crosslinked acrylate fiber is used as the hygroscopic fiber.

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