JP2004097274A - Method and apparatus for producing carbon dioxide dissolved warm water - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method for easily producing carbon dioxide dissolved warm water suitable when used for partial baths such as a foot bath. <P>SOLUTION: The carbon dioxide dissolved warm water of 30 to 50°C is produced by mixing high concentration carbon dioxide dissolved water of a carbon dioxide concentration equal to or higher than a saturated concentration under the atmospheric pressure at a water temperature equal to or below a room temperature with warm water whose temperature is higher than the high concentration carbon dioxide dissolved water by the ratio of 1:1 to 1:10. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a method and apparatus for producing hot water containing carbon dioxide gas, which is suitable for use as a hot bath or a partial bath such as a foot bath for bringing a part of a body into contact with hot water containing carbon dioxide gas.
[0002]
[Prior art]
It is generally well known that bathing in warm water containing carbon dioxide, such as a carbonated spring, provides a warm bath effect such as dilatation of peripheral blood vessels and difficulty in cooling with hot water. For this reason, medicines and devices that can easily obtain carbonated water for bath are commercially available. In recent years, the therapeutic effect of high-concentration carbon dioxide gas-dissolved hot water of about several hundred to 1,000 mg / l has been proven. For this reason, for rehabilitation and treatment, a partial bath such as a hot compress or a foot bath is performed using several liters to several tens of liters of such high-concentration carbon dioxide dissolved water. Further, it is expected that a more remarkable therapeutic effect can be obtained by using a high-concentration carbon dioxide-dissolved hot water of about 1200 mg / l near the carbon dioxide saturation concentration at 40 ° C. For this reason, the necessity of a technique for easily and efficiently obtaining hot water of high concentration of 1000 mg / l or more is increasing.
[0003]
An example of a technique for obtaining such hot water containing carbon dioxide is disclosed in Japanese Patent No. 2810694. According to this conventional technique, carbon dioxide hot water is generated by dispersing and absorbing carbon dioxide gas as fine bubbles in bath water through a hollow fiber type semipermeable membrane.
Also, Japanese Patent Application Laid-Open No. Hei 10-324502 describes a method of adjusting the specific resistance of ultrapure water by dividing the ultrapure water stream into two parts, adding carbon dioxide gas to only one of them, and then merging again. .
[0004]
[Problems to be solved by the invention]
However, in the technology disclosed in Japanese Patent No. 2810694, since a porous hollow fiber type semipermeable membrane is used, there is a danger that water leakage will occur due to long-term use. In particular, when used with warm water, the danger may increase. In addition, since modules containing hollow fiber type semipermeable membranes are generally expensive, the cost of equipment and running is considered to be high.
[0005]
The technique disclosed in Japanese Patent Application Laid-Open No. H10-324502 aims to adjust the specific resistance of unheated ultrapure water based on the dissolved concentration of carbon dioxide gas. It is unsuitable for producing suitable hot water in which carbon dioxide gas is dissolved.
[0006]
Accordingly, an object of the present invention is to provide a method and apparatus for producing hot water with dissolved carbon dioxide, which is suitable for use as a partial bath or the like and can easily produce hot water with dissolved carbon dioxide.
[0007]
[Means for Solving the Problems]
In order to achieve the above object, the method for producing carbon dioxide-dissolved hot water of the present invention comprises mixing a high-concentration carbon dioxide-dissolved water in which carbon dioxide is dissolved at a saturation concentration or higher at the water temperature under atmospheric pressure, and hot water. It is characterized by producing hot water dissolving carbon dioxide gas.
According to the method for producing hot water with dissolved carbon dioxide gas of the present invention configured as described above, hot water with dissolved carbon dioxide gas can be easily produced by mixing high-concentration carbon dioxide-dissolved water with hot water.
[0008]
Further, according to the present invention, preferably, the temperature of the high-concentration carbon dioxide dissolved water is equal to or lower than room temperature.
The solubility of carbon dioxide in water increases as the water temperature decreases. For this reason, if the temperature of the high-concentration carbon dioxide-dissolved water falls below room temperature, it becomes easier to obtain a higher-concentration carbon dioxide-dissolved water. Further, the pressure in the container filled with the high-concentration carbon dioxide dissolved water becomes lower as the water temperature is lower. Therefore, from the viewpoint of safety, it is preferable that the water temperature of the high-concentration carbon dioxide gas-dissolved water is equal to or lower than room temperature.
[0009]
According to the present invention, preferably, the high-concentration carbon dioxide dissolved water is obtained by supplying water and carbon dioxide to a sealed pressure-resistant container, and dissolving the carbon dioxide in water.
As a result, high-concentration carbon dioxide gas-dissolved water can be easily obtained. If the obtained high-concentration carbon dioxide dissolved water is filled in a sealed pressure-resistant container, the sealed pressure-resistant container can be easily stored and transported. Therefore, the method for producing carbon dioxide-dissolved hot water of the present invention can be carried out at a desired location regardless of the location where the high-concentration carbon dioxide-dissolved water is produced.
[0010]
Further, according to the present invention, preferably, the temperature of the hot water is in the range of 30 to 80 ° C.
[0011]
According to the present invention, preferably, in mixing the high-concentration carbon dioxide gas-dissolved water and the hot water, the mixing ratio of the high-concentration carbon dioxide gas-dissolved water and the hot water is preferably 1: 1 to 1:10 by volume ratio. Within the range.
If the mixing ratio of the hot water to the carbon dioxide dissolved water is 1: 1 or less, high-temperature hot water is required to produce the carbon dioxide dissolved hot water having a water temperature of, for example, 30 ° C. or more. For this reason, there is a danger of burns, etc., depending on how hot water is handled. On the other hand, if the mixing ratio of warm water to carbon dioxide dissolved water is 1:10 or more, a large amount of warm water is required.
[0012]
According to the present invention, preferably, the high-concentration carbon dioxide dissolved water is added to the hot water supplied to the water tank when mixing the high-concentration carbon dioxide dissolved water with the above-mentioned warm water.
Thereby, when mixing the high-concentration carbon dioxide dissolved water and the hot water, it is possible to suppress the gas diffusion of the carbon dioxide.
[0013]
Further, according to the present invention, preferably, when mixing the high-concentration carbon dioxide gas-dissolved water and the hot water, the high-concentration carbon dioxide gas-dissolved water is supplied to the pipe that leads the hot water.
Thus, the carbon dioxide gas can be dissolved in the hot water in the pipe through which the hot water flows. As a result, the mixing can be easily performed without the trouble of transporting the high-temperature carbon dioxide gas-dissolved water or the hot water or transferring the carbon dioxide gas-dissolved water or the hot water.
[0014]
Further, according to the present invention, preferably, the temperature of the hot water in which the carbon dioxide gas is dissolved is in the range of 30 to 50 ° C.
When the temperature of the carbon dioxide-dissolved hot water is within this range, it is less likely to cause discomfort to the user who touches the carbon dioxide-dissolved hot water, and is suitable for use in a partial bath or the like. That is, if the water temperature is lower than 30 ° C., the body temperature may be deprived in the case of a partial bath or the like, and a sufficient therapeutic effect may not be obtained. If the water temperature is higher than 50 ° C., there is a risk of burns.
[0015]
In addition, the water temperature of the carbon dioxide gas-dissolved hot water can be easily calculated from the water temperature and the mixing ratio water of the high-concentration carbon dioxide gas-dissolved water and the hot water, respectively, assuming that the calorific value is preserved. Therefore, by adjusting the respective water temperatures and mixing ratios of the high-concentration carbon dioxide gas-dissolved water and the hot water, it is possible to easily obtain carbon dioxide-dissolved hot water having a desired water temperature.
[0016]
Further, according to the present invention, preferably, the concentration of dissolved carbon dioxide in the heated water of dissolved carbon dioxide is 400 mg / l or more.
[0017]
According to the present invention, preferably, at least one of high-concentration carbon dioxide-dissolved water, hot water, and carbon dioxide-dissolved hot water is a fragrance, a coloring agent, a skin moisturizer, a vitamin agent, a pH adjuster, or the like. Contains at least one functional drug.
Thereby, when using the carbon dioxide-dissolved hot water for a partial bath or the like, it is possible to provide a user with a relaxation effect and a skin preservation effect.
[0018]
Further, the apparatus for producing hot water with dissolved carbon dioxide gas according to the present invention comprises a sealed pressure-resistant container filled with high-concentration carbon dioxide-dissolved water in which carbon dioxide gas is dissolved at a saturation concentration or higher at the water temperature under atmospheric pressure, and supplied from the sealed pressure-resistant container. A high-concentration carbon dioxide-dissolved water to be mixed with hot water having a temperature higher than the high-concentration carbon-dioxide-gas-dissolved water.
According to the apparatus for producing hot water with dissolved carbon dioxide gas of the present invention having the above-described configuration, a simple apparatus configuration can be used to mix hot water with dissolved carbon dioxide gas having a high concentration. Is done.
[0019]
Further, according to the present invention, preferably, the sealed pressure-resistant container is a carbonator. This makes it possible to easily obtain high-concentration carbon dioxide gas-dissolved water.
[0020]
Further, according to the present invention, preferably, the sealed pressure-resistant container sends out the high-concentration carbon dioxide gas-dissolved water filled therein to the mixing section by the pressure of the carbon dioxide gas.
This eliminates the need for a liquid sending means such as a liquid sending pump. Therefore, it is possible to reduce the cost and size of the device.
[0021]
Further, according to the present invention, preferably, the mixing section is constituted by a Venturi tube.
Thereby, the high-concentration carbon dioxide gas-dissolved water is drawn into the Venturi tube by the negative pressure generated in the throttle portion when the hot water flows through the Venturi tube, and mixed with the hot water. As a result, a liquid feeding means such as a liquid feeding pump is not required, so that the cost and size of the apparatus can be reduced.
[0022]
Further, according to the present invention, preferably, the mixing section is provided on a pipe for guiding hot water from a hot water supply source to a water tank.
Thereby, the size of the device can be reduced.
[0023]
Further, according to the present invention, preferably, further provided is a water tank to which the carbon dioxide gas-dissolved hot water is supplied, and a circulation pipe for guiding the carbon dioxide gas-dissolved hot water in the water tank out of the water tank, and returning to the water tank. The mixing section is provided on a circulation pipe.
As described above, if high-concentration carbon dioxide-dissolved water is supplied while circulating carbon dioxide-dissolved hot water, the apparatus can be easily transported. As a result, it is possible to use carbon dioxide dissolved hot water at a desired place.
[0024]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.
First, with reference to FIG. 1, a description will be given of a carbon dioxide gas-dissolved hot water producing apparatus according to a first embodiment. FIG. 1A is a block diagram for explaining a carbon dioxide gas-dissolved hot water producing apparatus according to the first embodiment.
[0025]
As shown in FIG. 1, the apparatus for producing hot water with dissolved carbon dioxide gas 100 of the first embodiment includes a sealed pressure-resistant container 1 and a mixing unit 2.
The sealed pressure-resistant container 1 is filled with high-concentration carbon dioxide gas-dissolved water maintained at a water temperature of room temperature (for example, about 25 ° C.) or lower. In the high-concentration carbon dioxide gas-dissolved water, under a pressurized state maintained by the closed pressure-resistant container 1, a high-concentration carbon dioxide gas at or above the saturation concentration of carbon dioxide gas at the water temperature at atmospheric pressure is dissolved.
Further, at least one of functional agents such as a fragrance, a colorant, a skin moisturizer, a vitamin agent, and a pH adjuster may be added to the high-concentration carbon dioxide dissolved water.
[0026]
As such a sealed pressure-resistant container 1, for example, a metal or resin container filled and sealed with a carbon dioxide dissolved water such as a commercially available soda water for water splitting can be used. It is more preferable to use a household carbonator which is filled with water and carbon dioxide to obtain carbon dioxide dissolved water. The use of a carbonator can save labor and space for transporting and storing soda water, and thus can improve user convenience.
Further, it is desirable that the sealed pressure-resistant container 1 has a structure in which the high-concentration carbon dioxide dissolved water filled therein is sent out from the discharge port 11 to the outside by the pressure of the carbon dioxide gas.
[0027]
The mixing section 2 is provided on a so-called one-pass line pipe that guides hot water from the hot water source 3 to the water tank 4. Then, the mixture is supplied to the mixing section 2 from the discharge port 11 of the closed pressure-resistant container 1 through the first pipe 5. Hot water is also supplied to the mixing section 2 from the hot water source 3 through the second pipe 6. As the hot water source 3, any conventionally known suitable hot water supply means such as a water heater can be used. The temperature of the hot water is set higher than that of the high-concentration carbon dioxide dissolved water.
Further, at least one of functional agents such as a fragrance, a colorant, a skin moisturizer, a vitamin, and a pH adjuster may be added to the warm water.
An on-off valve such as a valve or a cock may be provided in the middle of the first pipe 5.
[0028]
Then, in the mixing section 2, the high-concentration carbon dioxide dissolved water and the hot water are mixed to generate carbon dioxide dissolved hot water.
When mixing the high-concentration carbon dioxide gas-dissolved water and the warm water, the mixing ratio of the high-concentration carbon dioxide-gas-dissolved water and the warm water is preferably set in a range of 1: 1 to 1:10 by volume. Then, it is preferable to adjust the temperature and the mixing ratio of the high-concentration carbon dioxide gas-dissolved water and the hot water such that the temperature of the generated carbon dioxide-dissolved hot water falls within the range of 30 to 50 ° C.
[0029]
Further, in the present embodiment, the mixing section 2 is configured by a Venturi tube shown in FIG. The Venturi tube generates a negative pressure in the lateral hole 24 provided in the throttle unit 22 by narrowing the fluid flow path. Hot water flows as a fluid into the venturi tube, and high-concentration carbon dioxide gas-dissolved water is sucked through the lateral hole 24.
[0030]
In addition, in order to reduce the pressure loss in the throttle portion 22, the upstream taper 21 of the throttle portion 22 is provided at a steep angle with respect to the axis between the venturis, while the downstream taper 23 is positioned with respect to the axis. It is provided at a gentle angle. Specifically, for example, it is preferable that the upstream side tabber 21 is provided at an angle of 17 to 20 ° with respect to the axis, while the downstream side tabber 23 is provided at an angle of 5 to 10 ° with respect to the axis.
[0031]
Then, the generated carbon dioxide dissolved hot water is supplied to the water tank 4 through the third pipe 7. As the water tank 4, any suitable container can be used according to the use of the hot water in which the carbon dioxide gas is dissolved. For example, a bathtub may be used for a whole body bath, or various containers such as a tub or a basin may be used for a partial bath or a compress.
[0032]
Note that an in-line mixing member such as a static mixer may be provided in the third pipe 7. By providing such a mixing member, the mixing efficiency can be improved.
Further, in the middle of the third pipe 7 or in the water tank 4, at least one of functional agents such as fragrances, coloring agents, skin moisturizers, vitamins, and pH adjusters may be added to the carbon dioxide dissolved water. .
[0033]
As described above, according to the method for producing carbon dioxide gas-dissolved hot water of the present embodiment, by dissolving carbon dioxide gas having a saturated dissolved concentration or higher at atmospheric pressure and mixing carbon dioxide gas-dissolved water at room temperature or lower with hot water, for example, And 30 ° C. or higher dissolved carbon dioxide-dissolved hot water can be easily produced.
If the amount of the dissolved carbon dioxide gas is set to 2 liters or less, the apparatus for producing the highly concentrated dissolved carbon dioxide gas can be downsized. Further, it is possible to reduce the labor for transporting the high-concentration carbon dioxide dissolved water, and further, to save space in the storage place. If the total amount of the generated carbon dioxide gas-dissolved hot water is 20 liters or less, it can be manufactured in a small container. For this reason, it is possible to ease restrictions on a place where the carbon dioxide-dissolved hot water is produced or used.
[0034]
Next, with reference to FIG. 2, a description will be given of a carbon dioxide dissolved hot water producing apparatus according to a second embodiment. FIG. 2 is a block diagram for explaining a carbon dioxide dissolved hot water producing apparatus according to a second embodiment.
The configuration of the closed pressure-resistant container 1 and the mixing unit 2 and the temperature and the mixing ratio of the high-concentration carbon dioxide gas solution in the carbon dioxide gas-dissolved hot water production device 200 of the second embodiment are the same as those of the first embodiment described above. Therefore, detailed description is omitted.
[0035]
The apparatus for producing hot water with dissolved carbon dioxide in the second embodiment includes a circulation pipe (circulation line) 8 instead of the second pipe 6 and the third pipe 7 in the first embodiment, and further includes a water tank 4. The hot water in which the carbon dioxide gas is dissolved in the water tank 4 is guided by the circulation pump (not shown) through the circulation pipe 8 to the outside of the water tank 4 and returned to the water tank 4 again. Therefore, in the second embodiment, hot water containing carbon dioxide gas is supplied to the mixing section 2 as hot water. The hot water containing dissolved carbon dioxide gas may be heated and kept warm by a heating means (not shown) in the water tank 4 or the circulation pipe 8.
According to the apparatus for producing hot water with dissolved carbon dioxide, hot water with dissolved carbon dioxide can be obtained with a simple apparatus configuration. For this reason, restrictions on the installation location of the device can be eased.
[0036]
Next, a third embodiment of the present invention will be described.
In the third embodiment, mixing is performed by adding high-concentration carbon dioxide-dissolved water to hot water supplied to the water tank without using the mixing section, thereby producing carbon dioxide-dissolved hot water.
Specifically, 3 L of 40 ° C. hot water was put in a 5 L (liter) water tank, and then 1 L of 20 ° C. commercial soda water was added to the hot water as high-concentration carbon dioxide gas-dissolved water. Here, soda water having a carbon dioxide concentration of 8000 mg / l manufactured by Suntory Ltd. was used as commercially available soda water. As a result, at a water temperature of 40 ° C., carbon dioxide gas-dissolved hot water having a carbon dioxide gas concentration of 1400 mg / l was obtained.
Therefore, it can be seen that high-concentration carbon dioxide-dissolved hot water can be easily produced only by mixing high-concentration carbon dioxide-dissolved water in the warm water.
[0037]
In each of the embodiments described above, examples in which the present invention is configured under specific conditions have been described. However, the present invention can be variously changed and combined, and the present invention is not limited to this.
[0038]
【The invention's effect】
As described above, according to the method for producing hot water with dissolved carbon dioxide gas of the present invention, hot water with dissolved carbon dioxide gas suitable for use in partial baths such as foot baths can be easily produced. Further, according to the apparatus for producing hot water with dissolved carbon dioxide gas of the present invention, the hot water with dissolved carbon dioxide gas can be easily produced with a simple configuration.
[Brief description of the drawings]
FIG. 1A is a block diagram of an apparatus for producing hot water with dissolved carbon dioxide gas according to a first embodiment of the present invention, and FIG. 1B is a schematic cross-sectional view of a mixing section.
FIG. 2 is a block diagram of an apparatus for producing hot water with dissolved carbon dioxide gas according to a second embodiment of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Closed pressure-resistant container 2 Mixing part 3 Hot water source 4 Water tank 5 First pipe 6 Second pipe 7 Third pipe 8 Circulation pipe 11 Discharge port 100, 200 Carbon dioxide dissolved hot water production device

Claims (16)

Mixing high-concentration carbon dioxide-dissolved water in which carbon dioxide is dissolved at a concentration equal to or higher than the saturation concentration at the water temperature under atmospheric pressure, and hot water having a temperature higher than the temperature of the high-concentration carbon dioxide-dissolved water, A method for producing carbon dioxide-dissolved hot water, comprising producing dissolved hot water. The method for producing hot water with dissolved carbon dioxide according to claim 1, wherein the temperature of the high-concentration carbon dioxide-dissolved water is not higher than room temperature. The method for producing carbon dioxide-dissolved hot water according to claim 1 or 2, wherein the high-concentration carbon dioxide-dissolved water is obtained by supplying water and carbon dioxide to a sealed pressure-resistant container, and dissolving the carbon dioxide in the water. The method for producing hot water with carbon dioxide dissolved therein according to claim 1, wherein the temperature of the hot water is within a range of 30 to 80 ° C. 5. In mixing the high-concentration carbon dioxide dissolved water and the warm water,
The carbon dioxide gas-dissolved hot water production according to any one of claims 1 to 4, wherein a mixing ratio of the high-concentration carbon dioxide gas-dissolved water and the warm water is in a range of 1: 1 to 1:10 by volume. Method. In mixing the high-concentration carbon dioxide dissolved water and the warm water,
The method for producing carbon dioxide-dissolved hot water according to any one of claims 1 to 5, wherein the high-concentration carbon dioxide-dissolved water is added to the hot water supplied to the water tank. Upon mixing the high-concentration carbon dioxide dissolved water with the warm water,
The method for producing carbon dioxide-dissolved hot water according to any one of claims 1 to 6, wherein the high-concentration carbon dioxide-dissolved water is supplied to the pipe for guiding the hot water through the pipe. The method for producing carbon dioxide-dissolved hot water according to any one of claims 1 to 7, wherein the temperature of the carbon dioxide-dissolved hot water is in a range of 30 to 50C. The method for producing hot water with dissolved carbon dioxide according to any one of claims 1 to 8, wherein the concentration of dissolved carbon dioxide in the hot water with dissolved carbon dioxide is 400 mg / l or more. At least one of the high-concentration carbon dioxide-dissolved water, the warm water and the carbon dioxide-dissolved hot water contains at least one of functional agents such as a fragrance, a colorant, a skin moisturizer, a vitamin agent, and a pH adjuster. The method for producing hot water containing carbon dioxide dissolved therein according to any one of claims 1 to 11. A sealed pressure-resistant container filled with high-concentration carbon dioxide-dissolved water in which carbon dioxide is dissolved at a concentration equal to or higher than the saturation concentration at the water temperature under atmospheric pressure,
A mixing unit that mixes the high-concentration carbon dioxide-dissolved water supplied from the sealed pressure-resistant container with hot water that is higher than the temperature of the high-concentration carbon dioxide-dissolved water, and generates carbon dioxide-dissolved hot water;
An apparatus for producing carbon dioxide-dissolved hot water, comprising: The apparatus for producing carbon dioxide-dissolved hot water according to claim 11, wherein the sealed pressure-resistant container is a carbonator. 13. The apparatus for producing hot water with dissolved carbon dioxide gas according to claim 11, wherein the sealed pressure-resistant container sends out the high-concentration carbon dioxide gas-dissolved water filled therein to the mixing section by the pressure of carbon dioxide gas. 14. The apparatus for producing carbon dioxide-dissolved hot water according to claim 11, 12 or 13, wherein the mixing section is formed of a Venturi tube. The carbon dioxide dissolved hot water producing apparatus according to any one of claims 11 to 14, wherein the mixing section is provided on a pipe that guides the hot water from a hot water supply source to a water tank. Furthermore, a water tank to which the carbon dioxide dissolved hot water is supplied,
A circulation pipe for guiding the carbon dioxide dissolved hot water of the water tank to the outside of the water tank and returning the water to the water tank;
The apparatus for producing hot water with dissolved carbon dioxide gas according to any one of claims 12 to 15, wherein the mixing section is provided on the circulation pipe.

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