JPH0197476A - Far infrared ray radiation mat - Google Patents

Abstract

PURPOSE:To uniformly heat the whole body even in tepid water of about 40 deg.C by the use of the title mat in a bathtub and to reduce cost, by interposing a reflecting body for reflecting heat rays in a sheet like for infrared ray emitting body. CONSTITUTION:A far infrared ray emitting mat 1 is equipped with a sheet like body 2 having a square or rectangular shape composed of a far infrared emitting body and the reflecting body 3 interposed in the sheet like body 2 and wavy recessed and protruding parts 7, 8 are respectively formed to the front and back surfaces 5, 6 of the sheet like body 2. When the far infrared ray emitting mat 1 is laid on the bottom part of a bathtub 4, effective far infrared rays are emitted to a bathing person from the mat 1 heated by the hot water in the bathtub 4. The reflecting body 3 equally conducts supplied heat to the entire region of the reflecting body and reflects incident heat rays to generate reflected heat and, by reflecting heat rays, the emitting force of heat rays can be enhanced and said heat rays can be emitted in an objective direction and the wastefulness of emission can be omitted.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a far-infrared radiation mat that is placed in a bathtub, sauna room, etc. and emits far-infrared radiation.

[Conventional technology and its problems]

Generally speaking, when you take a bath in a bath attached to a house, your whole body does not get as warm as a rock bath at a hot spring area, even if the water is just as lukewarm.

This is because in the case of a rock bath, the surrounding area is surrounded by rocks, so the rocks are warmed by the hot spring and emit far infrared rays, which warms the whole body.In contrast, in a home bathtub, far infrared rays are only a small amount. However, only a small amount of radiation is emitted, and it does not get very warm.

In order for energy to be transmitted as radiation, radiation (electromagnetic waves) must first be generated.

An object that emits radiation is called a ``radiator'' (or radiation source), and an object that receives radiation is called a ``receiver'' (or incident object).

That is, the radiator is a type of energy conversion device, and the energy supplied to the radiator is converted into radiant energy and emitted. Additionally, the supplied energy may be radiant energy.

When a substance is supplied with energy, which is converted into molecular vibrational energy and its temperature rises, the atoms and molecules that make up the substance undergo thermal motion and enter a so-called excited state. When atoms and molecules in this excited state transition to a state with lower vibrational or rotational energy, they emit energy corresponding to the energy difference as "radiant energy." This is called "thermal radiation."

The heat generation temperature of infrared light bulbs, which have traditionally been used for industrial purposes such as heating or drying, is between 2000℃ and 2300℃ (
Ceramics used in infrared stoves have a high temperature of 800° C. and emit near-infrared rays with a peak wavelength of 2.7 μm.

Furthermore, all living things have a unique wavelength corresponding to the frequency necessary to sustain their own life. Organic and inorganic substances other than living organisms do not have unique wavelengths. In other words, there is a "peak" where maximum infrared radiation is emitted depending on the heat energy supplied.

However, ceramics cannot emit effective far-infrared rays unless they are given high thermal energy of 500°C or higher. The applicable peak radiation temperatures of various ceramics, which are attracting attention as the most efficient infrared radiators today, are as follows:
As listed below, this is extremely high.

1, ZrO2 (zirconia)...800
℃2.5i02 (Silica) ・・・・・・・・・
・800℃3, Ti02 (titania) ・・・・・・・
・・600℃～1000℃ ゛4, MgO (magnesia) ・・・・・・800
℃5, BeO (herilia) ・・・・・・・・・8
00℃6, A120a (alumina)...
...200°C to 2000°C Therefore, these ceramics have a temperature of 4, which is the temperature of a bath.
When thermal energy is supplied at a temperature of 0° C. or 60° C., which is the temperature of a sauna, the amount of far-infrared rays emitted is extremely small, and its ability to warm the human body is extremely weak.

However, the rocks of Iwaburo Onsen emit effective far-infrared rays as mentioned above at temperatures as low as 40°C.

This means that when the heating element is a single point, the intensity of the heat radiated is inversely proportional to the square of the distance. That is, when the distance is doubled, the intensity of heat is reduced to 1/4.

However, when the heating element is made into a wide planar shape, the reduction rate is 1
/2, so the intensity of the heat doubles. Furthermore, if you surround it with heating elements, the intensity of the heat will be amplified several times.

However, the power of far infrared rays emitted from individual stones in a rock bath is weak, but since it is surrounded by rocks both at the periphery and at the bottom,
Far-infrared rays, which are individually weak, resonate at similar wavelengths and become excited, which has a synergistic effect and amplifies the radiation power.

Note that infrared rays are light, and for example, when used for illumination purposes, even a low-wattage, dark light bulb will become brighter and have higher power if used in large numbers.

Therefore, an object of the present invention is to provide a far-infrared radiation mat that, when used in a bathtub, can thoroughly warm the whole body no matter how lukewarm the water is at 40° C., and does not increase the cost.

[Means for solving problems]

The far-infrared radiation mat of the present invention includes a sheet-shaped body made of a far-infrared radiator, and a reflector interposed within the sheet-shaped body to reflect heat rays.

[Effect]

With the above configuration, when the far-infrared radiator receives heat, it converts the heat into radiant energy. Further, the heat rays are fed to the reflector, which uniformly conducts the supplied heat to the reflector, and also reflects the incident heat rays to generate reflected heat. Furthermore, the radiation power can be increased by reflecting heat rays.

〔Example〕

Hereinafter, the present invention will be explained in detail based on drawings showing examples.

1 and 2, reference numeral 1 indicates a far-infrared radiation mat according to the present invention, and this mat 1 includes a square or rectangular sheet-like body 2 made of a far-infrared-ray emitter, and a reflector 3 interposed in the sheet-like body 2;
Wave-like uneven portions 7.8 are formed on the front surface 5 and back surface 6, respectively. In addition, it is preferable that the sheet-like body 2 is coated with a covering member so that it does not lose its shape and that water or the like does not enter inside.

Thus, the far-infrared radiator emits far-infrared rays at about 40°C to 80°C. By the way, in ancient times, people covered their food with straw to store it or use it for fermentation. For example, natto. Lunch boxes were also wrapped in bamboo bark, rapeseed leaves, or tree leaves to prevent them from spoiling. Furthermore,
Straw is good for recovering from fatigue, and pillows with buckwheat husks or rice husks can help you get a good night's sleep and are good for your health. In addition, there are many benefits associated with straw, such as putting charcoal in the straw ash to make it last longer, and putting rice cakes and potatoes in the straw ash to make them fluffy from the core without burning. In addition to straw, it is well known that if potatoes are placed in the ashes of a charcoal or fallen leaf bonfire, they will be roasted from the core without burning. Fermentation heat was used as a hotbed.

Therefore, the present inventor developed straw, rice husks, and fallen leaves (dead pine leaves).
When we conducted a far-infrared radiation test at approximately 40°C to 80°C using samples such as , wood flour, etc., we found that the following materials A,
If B and C are configured singly or in combination of two or more,
It was found that it exhibits a strong emissivity superior to ceramics.

A: Plant powder... For example, straw, rice husk, tree leaves (dead fallen leaves of pine trees and fallen coniferous leaves), wood flour (sawdust from lumber), or smoky charcoal powder or ash of these materials.

B: Vegetable or animal fats and oils... For example, whale oil, fish oil, beef oil, other meat animal fats and oils, soybean oil, pine oil, rapeseed oil, etc.

C: Volcanic ash: A deposit of volcanic ash called Shirasu.

Furthermore, the following materials are added as desired.

D=High molecular compound... Vinyl acetate, natural rubber, etc.

Note that the polymer compound is used to chemically or physically bond each material.

Therefore, ■ When one of the above materials A, B, and C is used as a component, ■ When one of the materials A, B, and C is used as a main component and a small amount of other materials are added to it, ■ ■or■
When adding more materials, ■Materials A, B, C
(2) When using two or three of the materials A, B, and C and adding material to them, etc. can be selected.

Through experiments, it has been found that the following formulation example exhibits higher radiation power.

(Formulation example 1) Material name Parts by weight: Rice husk powder A 100 Smoky pine needle powder A 30 Mixed soybean oil B 60 Volcanic ash C30 Polymer compound D 40 Total 260 (Formulation example 2) Material name Parts by weight: pine needles Powder A100 Rice husk smoky charcoal powder A 30 Mixed soybean oil B 60 Mixture of volcanic ash and ceramics C30 Polymer compound D 40 Total 260 (Blend example 3) Material name Mixed weight parts Rice husk powder A 50 Wood flour (sawmill) Sawdust) As2 Pine needle ash A 30 Mixed pine oil B 60 Volcanic ash C30 High molecular compound D 40 Total 260 (Blend example 4) Material name Mixed weight part Arrowroot powder A100 Wood powder smoky charcoal A 30 Mixed soybean oil B 60 Volcanic ash and straw ash Mixture C30 High molecular compound D 40 Total 260 It has also been found that it is more preferable to use a combination of materials than to use the materials alone.

The reason is as follows. That is, ■Animal oil is an excellent far-infrared radiator, and its radiation peak temperature is 40~
The temperature is 50°C. ■Vegetable oils have a slightly higher peak temperature than animal oils, <50 to 60°C. ■Rice husk is the best far-infrared radiator among plant powders, and exhibits high radiant function at temperatures of 50 to 70°C. ■Wood flour has a slightly inferior radiation function compared to rice husk, but when used together as an auxiliary agent for rice husk, it exhibits the same radiation function as rice husk. ■Among rubbers and plastics, those with particularly high absorption of far infrared rays can be used as radiators, but their radiation power is weak when used alone.

However, if animal or vegetable fats and oils are used in combination, they become excellent radiators. The radiation peak temperature of vinyl acetate is 60°C. ■Volcanic ash (whitebait) is a good far-infrared radiator, with a radiation peak of 80 to 100°C.

The reflector 3 is made of a metal plate or metal foil, such as aluminum, which has a high heat ray reflection efficiency, and has a square or rectangular shape that is slightly smaller than the sheet-like body 2.

Therefore, if the far-infrared radiation mat 1 configured as described above is placed on the bottom of the bathtub 4 as shown in FIG.
The mat 1 heated by the hot water inside emits far-infrared rays that are effective for the bather.

In this case, it is preferable to cover the sheet-like body 2 with the above-mentioned covering member to prevent hot water from entering. Of course, this covering member is made of a material through which heat rays can penetrate.

That is, in general, thermal energy has a property of flowing from a stronger side to a weaker side, and similarly, far infrared rays, which are heat rays, have a property of flowing from a shorter wavelength to a longer wavelength. Therefore, if the human body temperature is 37℃, the wavelength is calculated using the Wien displacement law formula (2μm-2898/T), λ-2898/ (273+37) -9.34μm
Therefore, when the temperature of hot water is 40°C, the peak wavelength is 2898/(273+40) = 9.25 μm, which is the seven optimal conditions for far infrared rays to be absorbed by the human body.

The principle of warming the human body is that the mat 1 receives heat from hot water and converts the heat into radiant energy, which is first absorbed by the hot water and then absorbed by the entire skin of the human body. It causes a resonant movement, and the arousal of this vibration activates the human body and warms it. That is, an excited state is generated.

In addition, since the uneven portions 7.8 are formed on the front surface 5 and the back surface 6 of the sheet-like body 2, the radiation area becomes large.
Furthermore, the reflector 3 conducts the supplied heat evenly over the entire area of the reflector, and also reflects the incident heat rays to generate reflected heat. In addition, by reflecting the heat rays, the radiation power can be increased, and the radiation can be radiated in the desired direction (that is, toward the bather), so that wasteful radiation can be avoided.

As shown in FIG. 7, if the reflector 3 is not provided, a portion of the heat rays will be reflected by the front surface 5, a portion will be absorbed, and a portion will be transmitted. Therefore, as in the present invention,
If the reflector 3 is interposed, as shown in Fig. 7 (■), it will prevent the heat rays from passing through, store the transmitted energy in the reflector 3 and amplify it, and direct the part of the body toward the far-infrared radiator. It will increase it.

Further, FIG. 4 shows a case where the mat 1 is used in a residential sauna room 9, and the mat 1 is attached to the side surfaces 10, 10 and the bottom surface 11, respectively. Therefore, in this case, there is no need to maintain the inside of the sauna room 9 at around 100°C as in the past;
℃ at which low temperature will emit effective far-infrared rays to bathers.

That is, when the temperature of the sauna room 9 is 60°C, the peak wavelength of far infrared rays is 289B/ (273+60) -8
It has a wavelength of 73 μm, and this masototo emits far-infrared rays with a longer wavelength.

The principle of warming the human body is that the far infrared rays emitted from the mat 1 by the heat of the steam 12 are absorbed by the human body and the steam particles, and the steam particles further emit secondary radiation to the human body. The secondary radiation then has a longer wavelength than the primary radiation. In other words, the steam and the human body cause a resonant movement, creating an excited feeling that warms the whole body.

Next, FIG. 5 shows another embodiment, in which a linear or planar heater 13 is interposed within the sheet-like body 2, and the heater 13 is heated by two radiators 3.3. It is written as a letter of support. 14 is an electric cord connected to the heater 13.

Therefore, if this mat 1 is placed on the floor 15 of a kitchen or the like as shown in FIG. 6, the mat 1 will emit far-infrared rays due to the heat of the heater 13, so that your feet will be warm and comfortable even when working in the kitchen in winter. Become something.

In addition, since the front surface 5 and the back surface 6 of the sheet-like body 2 are provided with uneven portions 7 and 8, the soles of the feet of the person sitting on these are stimulated, and the so-called ``green bamboo foot'' is stimulated. ” effect.

The present invention is not limited to the illustrated embodiment, and the design may be changed without departing from the gist of the present invention. For example, the uneven portions 7 and 8 may be omitted on the front surface 5 and back surface 6 of the sheet-like body 2. It is also preferable that the overall shape is not only a square or a rectangle but also various shapes such as a circle, an ellipse, and a polygon.

〔Effect of the invention〕

In the far-infrared mat of the present invention, when the sheet-like body 2, which is the far-infrared ray emitter A, receives heat, it converts the heat into radiant energy. In other words, as shown in FIG. 3, if this mat 1 is placed in the bathtub 4,
It emits far infrared rays of 9°25 μm (when the temperature of hot water is 40°C) that is effective for the human body, so even if it is a bath installed in a house, it will be like taking a bath in a rock bath at a hot spring area. My whole body feels ridiculously warm.

In addition, since the mat 1 has a reflector 3 interposed therein, the supplied heat is evenly conducted to the entire area of the reflector 3.
By reflecting the incident heat rays, generating reflected heat, and further reflecting the heat rays, the radiation power is increased and the radiation is directed in the desired direction (that is, in the case shown in Fig. 3,
It also has the advantage of being able to emit light in the direction of the bather, thereby eliminating wasted radiation. Further, the reflector 3 prevents the heat rays from passing through, and stores and amplifies the transmitted energy in the reflector 3, thereby enhancing the function of the far-infrared radiator A. Furthermore, since the reflector 3 is interposed approximately at the center of the one-piece body 2, it can be used either face up or face down.

Furthermore, the materials for far-infrared radiator A include straw and fallen leaves, straw and rice husks are agricultural waste, wood flour is sawdust from sawmilling, pine needles and cedar leaves are deposited in mountains, and volcanic ash is a nuisance. Since they are all available at low prices, the mat 1 can be manufactured at low cost.

[Brief explanation of the drawing]

FIG. 1 is an enlarged sectional view showing an embodiment of the present invention, FIG. 2 is a perspective view, FIGS. 3 and 4 are sectional views showing the state of use, and FIG.
The figure is an enlarged sectional view showing another embodiment, FIG. 6 is a sectional view showing its use, and FIG. 7 is a sectional view explaining the effect of the radiator. 2... Sheet-like body, 3... Reflector, A... Far-infrared radiator.

Claims (1)

[Claims] 1. A far-infrared ray characterized by comprising a sheet-like body 2 made of a far-infrared radiator A, and a reflector 3 interposed within the sheet-like body 2 to reflect heat rays. Radiant mat. 2. The far-infrared ray radiating mat according to claim 1, wherein the far-infrared ray radiator has one of the following materials A to C as a main component. A: Plant powder B: Animal or vegetable oil C: Volcanic ash 3 The far-infrared radiator is a combination of two or more of the following materials A to C as described in claim 1. Far infrared radiation mat. A: Plant powder B: Animal or vegetable oil C: Volcanic ash