JP2810694B2 - Method and apparatus for producing carbonated hot water for bath water - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a method and an apparatus for artificially producing carbonated hot water for bathing water.

[Conventional technology]

Carbonated springs have long been used in baths and other hot springs that use hot springs because of their excellent heat retention.

In particular, it is considered that the warming action of the carbonated spring is basically because the body environment is improved by the peripheral vasodilating action of the contained carbon dioxide gas. In addition, the penetration and permeation of carbon dioxide into the percutaneous skin causes an increase and expansion of the capillary bed, which promotes blood circulation in the skin. For this reason, it is said to be effective in treating degenerative lesions and peripheral circulatory disorders.

Since carbonated springs have such an excellent effect, attempts have been made to artificially mix them. For example, a method of bubbling carbon dioxide gas in a bath tub, a chemical method of generating carbon dioxide gas by acting a carbonate and an acid in a bath tub,
Hot water and carbon dioxide gas are sealed in a tank under pressure for a certain period of time to absorb the carbon dioxide gas into the hot water to obtain hot carbon dioxide water.

On the other hand, these methods have been reported as inefficient methods of producing carbonated hot water due to the size of bubbles, the quantity of chemicals, the equipment and the cost (Licit, Baltimore). , Edited by Waverly, Medical Hydrology (1963), pp. 311-320, by Mukuleran, "Carbon Dioxide Bath" (Mccl
ellan, WS, “Carbon dioxide baths” in Medical hydrog
y ", edited by S.Licht, Baltimore, Md.Weverly, 1963, pp3
11-320)).

Recently, tablets prepared from carbonates and organic salts as tablets have been marketed. Such tablets have advantages such as easy storage and handling during dissolution, high efficiency, simplicity and low cost.

[Problems to be solved by the invention]

However, the conventional methods for producing carbonic acid hot water all have a problem that the rate of dissolution of carbon dioxide gas in warm water is low, and the concentration of carbon dioxide gas dissolved in warm water cannot be sufficiently increased.

For example, in the method using tablets, a large number of tablets must be introduced in order to secure a concentration of 300 ppm or more of carbon dioxide gas that exerts the effect as the above-mentioned carbonated spring.

Also, in the method in which the carbon dioxide gas is directly hubred in the bathtub, in order to achieve a carbon dioxide gas concentration of 300 ppm with hot water at 40 ° C., the dissolution rate of the carbon dioxide gas (when absorbed in the hot water) is only about 10%, and almost no. It turned out that carbon dioxide gas would escape. In addition, carbon dioxide gas is absorbed by increasing the contact area between carbon dioxide gas and water using air stones, sintered metal pipes, etc. Although the rate rapidly increased to about 50%, it was difficult to secure a higher dissolution rate.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a method and an apparatus for generating hot water for a hot water bath, which efficiently dissolve the carbon dioxide gas in the hot water with a simple and compact apparatus to generate high-concentration hot water. .

[Means for solving the problem]

The present invention relates to a method for producing a hot water by flowing bath water in contact with the surface of a hollow fiber type semipermeable membrane and feeding carbon dioxide gas into the hollow of the hollow fiber type semipermeable membrane. Producing carbonic acid hot water by dispersing and absorbing carbon dioxide gas as fine bubbles through the hollow fiber type semi-permeable membrane in the bath water flowing in contact with the water to generate carbonic acid hot water. The above object has been achieved by providing (first method invention).

Further, a disperser having a device suitable for carrying out the first method invention, that is, a driving device for circulating bath water and a hollow fiber type semipermeable membrane whose surface is in contact with the bath water circulated by the driving device And supplying the carbon dioxide gas into the hollow fiber type semi-permeable membrane of the disperser and feeding the carbon dioxide gas into the bath water flowing in contact with the surface of the hollow fiber type semi-permeable membrane. Another object of the present invention is to provide an apparatus for generating carbonated hot water for bath water, which is provided with a carbon dioxide gas supply apparatus for dispersing and absorbing fine bubbles through a semipermeable membrane.

Further, the present invention, immersing the hollow fiber type semi-permeable membrane in bath water,
Carbon dioxide gas is fed into the hollow of the hollow fiber type semipermeable membrane, and the carbon dioxide gas is dispersed and absorbed as fine bubbles in the bath water through the hollow fiber type semipermeable membrane to generate carbonic acid hot water. A method for producing carbonated hot water for bath water (second method invention), which is a device suitable for carrying out the method invention, is placed in a bath water, A disperser having a hollow fiber type semipermeable membrane whose surface is brought into contact with, and feeding carbon dioxide gas into the hollow of the hollow fiber type semipermeable membrane of the disperser, and passing the carbon dioxide gas through the hollow fiber type semipermeable membrane. It is an object of the present invention to provide an apparatus for producing carbonated hot water for bath water, comprising: a carbon dioxide gas supply device for dispersing and absorbing carbon dioxide gas of bath water as fine bubbles.

[Action]

According to the first invention method and apparatus, when carbon dioxide gas is fed into the hollow of the hollow fiber type semipermeable membrane, the carbon dioxide gas permeates through the hollow fiber type semipermeable membrane as fine bubbles, Carbon dioxide gas is dissolved in the bath water flowing in contact with the membrane surface to generate hot carbonated water.

When the hollow fiber type semipermeable membrane is immersed in bath water,
When carbon dioxide gas is fed into the hollow of the hollow fiber type semi-permeable membrane, the carbon dioxide gas permeates through the hollow fiber type semi-permeable membrane as fine bubbles and dissolves in the bath water to generate carbonic acid hot water.

〔Example〕

Hereinafter, the present invention will be described based on the embodiment shown in FIGS. In the drawings, FIG. 1 is an overall configuration diagram showing a first embodiment of a carbon dioxide gas generator suitable for performing the first invention method of the carbonated water generation method of the present invention on hot water, FIG. 2 is an enlarged sectional view showing a main part of FIG. 1, FIG. 3 is an overall configuration diagram showing a carbon dioxide gas generating apparatus of a second embodiment, and FIG. FIG. 5 is an overall configuration diagram showing a gas generating device, FIG. 5 is a perspective view showing a main part of a carbon dioxide gas generating device suitable for carrying out the second method of the present invention, and FIG. FIG. 5 is a diagram showing an example, FIG. 7 is a diagram corresponding to FIG. 5 showing a third embodiment, and FIG.
5 is a graph showing a change with time of the concentration of carbon dioxide gas of carbonic acid hot water generated using the example apparatus shown in the figure, together with a comparative example.

First, an apparatus according to an embodiment of the present invention suitable for carrying out the first method of the present invention will be described along with the operation.

As shown in FIG. 1, the apparatus of this embodiment includes a suction pump 4 for circulating hot water 2 in a bathtub 1 through a conduit 3, and a hollow fiber type having a surface in contact with the hot water 2 circulated by the suction pump 4. Disperser 5 having semipermeable membrane 51, and carbon dioxide gas is fed into hollow of hollow fiber type semipermeable membrane 51 of the disperser via conduit 6, and is fed through hollow fiber type semipermeable membrane 51. A carbon dioxide gas cylinder 7 for dispersing and absorbing the carbon dioxide gas in the circulating hot water 2.

Thus, the disperser 5 provided with the hollow fiber type semipermeable membrane 51 includes:
As shown in FIG. 2, a plurality of hollow fiber type semi-permeable membranes 51 formed in the same length are bundled and mounted in a shell 52, and a bundle of the hollow fiber type semi-permeable membranes 51 is provided at both ends of the shell 42. Covers 53, 53 are attached so as to cover the end faces of the cover 53. And
The end face of the bundle of the hollow fiber type semipermeable membrane 51 is sealed with one cover 53, and the conduit 6 is connected with the other cover 53. A carbon dioxide gas cylinder 7 is connected to the other end of the conduit 6, and the carbon dioxide gas of the carbon dioxide gas cylinder 7 is fed into each hollow of the hollow fiber type semipermeable membrane 51 via the conduit 6,
The hollow fiber type semipermeable membrane 51 is configured to be pressurized to a predetermined pressure.

A conduit 3 is connected to the shell 452 so as to be located in the vicinity of the covers 53, 53. Hot water 2 flows into the shell 52 from one of the conduits 3, and the hollow fiber type semi-permeable membrane is formed.
It flows through the inside of the shell 52 while contacting the surface of the
And circulates with the bathtub 1. While the hot water 2 flows through the inside of the shell 52, carbon dioxide gas flows from the hollow of the hollow fiber type semipermeable membrane 51 to the hollow fiber type semipermeable membrane 51.
The carbon dioxide gas is dispersed and absorbed in the warm water 2 flowing while contacting the hollow fiber type semipermeable membrane 51.

Thus, the hollow fiber type semipermeable membrane 51 of the disperser 5 includes:
A hollow fiber generally used as an artificial dialysis membrane can be suitably used. Hollow fiber type semipermeable membrane in the disperser 5
The amount of water that is circulated and circulated through 51 depends on the material and properties of the hollow fiber type semipermeable membrane 51.

In addition, the flow rate of the carbon dioxide gas fed into the hollow also varies depending on the material and properties of the hollow fiber type semipermeable membrane 51, similarly to the flow rate.

The hollow fiber type semipermeable membrane 51 only needs to have carbon dioxide gas permeability, and examples of such a material include an organic porous semipermeable membrane such as polycarbonate, polyacrylonitrile, polysulfone, and polyolefin. Instead of the hollow fiber type semipermeable membrane 51, an inorganic porous material such as a glass porous film, a sintered stainless steel, and a ceramic film may be used.

Further, it is preferable that the pore diameter of each of the hollow fiber type semipermeable membrane 51 and the inorganic porous membrane is in the range of 0.1 nm to 10,000 nm. The pore size can be appropriately selected as needed.

The ratio (gas / liquid supply ratio) of the amount of water circulated and circulated in the disperser 5 while being in contact with the hollow fiber type semipermeable membrane 51 (gas / liquid supply ratio) is higher than the theoretical saturation solubility in the disperser. It is preferable to set in the range of 5 to 300%.

According to the above-described embodiment, since the carbon dioxide gas is dispersed as fine bubbles into the warm water 2 through the hollow fiber type semipermeable membrane 51, the contact area of the bubbles with the warm water 2 is extremely large. The carbon dioxide is dissolved and absorbed very efficiently. Therefore, the disperser 5 can be made compact,
It is possible to achieve a reduction in the size of the device, a reduction in the installation area, and the like.

FIG. 3 shows a second embodiment of the present invention. This embodiment has substantially the same configuration as that of the means for circulating and circulating the hot water 2, except that a heating source 4 'is used instead of the suction pump. I have. That is, the hot water 2 is heated by the heating source 4 ', and the hot water 2 is circulated in the bathtub 1 by utilizing the convection phenomenon caused by the temperature difference. The effect can be obtained.

FIG. 4 shows still another embodiment of the present invention. In this embodiment, hot water 2 is supplied from a water heater (not shown) to a bathtub 1.
The carbon dioxide gas is absorbed in the hot water 2 by flowing through the disperser 5 during the supply to the inside.

Next, an apparatus suitable for carrying out the second invention method of the present invention will be described together with its operation.

As shown in FIG. 2, the apparatus of this embodiment is installed in hot water of a bathtub 1 and has a hollow fiber type semipermeable membrane whose surface is in contact with the hot water 2.
A disperser 5 provided with a hollow fiber type semi-permeable membrane 51 of the disperser 5;
And a carbon dioxide gas feeder (not shown) for feeding carbon dioxide gas into the hollow through a conduit 6 to disperse and absorb the carbon dioxide gas in the hot water.

The disperser 5 is configured by mounting a hollow fiber type semipermeable membrane 51 in a shell 52 similarly to the above-described respective embodiments.

A large number of holes 52A are dispersedly formed on the entire peripheral surface of the shell 52, and the hot carbonated water generated in the shell 52 enters and exits through the holes 52A, or the carbon dioxide gas is dispersed outside the shell 52. It is configured as follows.

Therefore, according to the apparatus of the present embodiment, the concentration of the carbonated hot water generated by the
It diffuses out of the shell 52 via 52A and is made uniform by the convection of heated hot water in the bathtub 1.

FIG. 6 shows a second embodiment suitable for carrying out the method of the present invention.
The disperser 5 of the apparatus of the present embodiment has the sixth configuration.
As shown in the drawing, a hollow fiber type semipermeable membrane 51 is arranged in a meandering manner on a sheet 54. And hollow fiber type semipermeable membrane
One end of 51 is sealed, and the other end is connected via a conduit 6 to a carbon dioxide gas supply device (not shown) so as to supply carbon dioxide gas into the hollow space. A plurality of the hollow fiber type semipermeable membranes 51 are bundled and used. Needless to say, the disperser 5 is used by being left at the bottom of a bathtub or the like.

Therefore, according to the present embodiment, the same operation and effect as those of the above embodiment can be obtained.

FIG. 7 shows a third apparatus suitable for carrying out the method of the present invention. As shown in FIG. 7, the disperser 5 of the apparatus of the present embodiment is a hollow fiber type semi-permeable member formed in a coil shape. It is composed of only the film 51. Then, the coil-shaped hollow fiber type semipermeable membrane 51
Is sealed at one end, and the other end is connected via a conduit 6 to a carbon dioxide gas supply device (not shown).

Therefore, the coiled hollow fiber type semipermeable membrane 51 of the device of the present embodiment is used.
The same operation and effect as those of the above embodiments can be obtained.

In the above embodiment, the disperser 5 of the carbon dioxide gas generator for carrying out the method of the present invention is formed by bundling a large number of hollow fiber type semi-permeable membranes 51, or by meandering a sheet 54, or by forming a coil. However, the present invention is not limited to these, as long as it is a semipermeable membrane that transmits carbon dioxide gas other than the hollow fiber type semipermeable membrane, without being affected by the form of the semipermeable membrane It can be applied to the present invention. In short, the present invention is included in the present invention as long as carbon dioxide gas can be brought into contact with hot water through a semipermeable membrane.

Next, the method and apparatus of the present invention will be described based on the following test examples.

(Test Example) This test example was performed under the following conditions using the apparatus of the embodiment shown in FIG.

Dispersor: Artificial dialysis membrane (manufactured by Nikkiso Co., Ltd.) Model: ALF-20G x 2 Effective membrane area: 2.1 m ² x 2 Filling volume: 135 ml x 2 Pressure resistance: 1.0 kg / cm ² Circulating pump: 2 Suction capacity: 3 kg / cm ² Head: 3 cm 200 hot water at 40 ° C. is put in the bathtub 1, and the hot water is sucked by the suction pump 4 through the conduit 3 to circulate the disperser 5. It is distributed at 30 / min. And returned to bathtub 1 as carbonated hot water. At this time, the CO ₂ flow rate in the hollow of the hollow fiber type semipermeable membrane 51 is 10
/ min, the pressure is set to 0.20 kg / cm ^2. Under the above conditions, the hot water was circulated and circulated, and the carbon dioxide concentration of the hot water was measured every 10 minutes. The measurement results are shown in FIG.

As a comparative example, 200 warm water at 40 ° C. was added. A ceramic diffuser plate (average pore diameter 50 μm, 5 mm
Square × 250 mm), and set the gas diffusion plate at 10 / min.
And the concentration of carbon dioxide in hot water was measured every 10 minutes. The results are shown in FIG.

According to the results shown in FIG. 8, the apparatus of this embodiment can achieve a carbon dioxide gas concentration of hot water exceeding 60 ppm after 10 minutes, and a concentration of around 1000 ppm after 30 minutes.

On the other hand, the apparatus of the comparative example has a carbon dioxide gas concentration of 500p in about 20 minutes.
Although it reaches pm, no significant increase in concentration can be expected even after 20 minutes.

Therefore, the method of the present invention using the apparatus of the present embodiment can generate high-concentration carbonated hot water in a short time.

〔The invention's effect〕

ADVANTAGE OF THE INVENTION According to the production | generation method and apparatus of carbonated hot water of this invention, a simple and compact apparatus can dissolve | dissolve carbon dioxide gas in warm water efficiently, and can generate | occur | produce high-concentration carbonated water.

[Brief description of the drawings]

FIG. 1 is an overall configuration diagram showing a first embodiment of a carbon dioxide gas generating apparatus suitable for carrying out a first method of the present invention for producing hot water of carbon dioxide, and FIG. FIG. 3 is an enlarged cross-sectional view showing a main part, FIG. 3 is an overall configuration diagram showing a carbon dioxide gas generator of a second embodiment, and FIG. 4 is an overall configuration showing a carbon dioxide gas generator of a third embodiment. Fig. 5, Fig. 5 is a perspective view showing a main part of a carbon dioxide gas generating apparatus suitable for carrying out the second method of the present invention, Fig. 6 is a diagram corresponding to Fig. 5 showing the second embodiment, FIG. 7 is a diagram corresponding to FIG. 5 showing the third embodiment, and FIG. 8 is a graph showing the time-dependent change of the carbon dioxide concentration of the carbonated hot water generated using the apparatus of the embodiment shown in FIG. is there. 1; bathtub, 2; hot water 4; suction pump (drive unit) 5; disperser 7; cylinder (carbon dioxide supply unit) 51; hollow fiber type semipermeable membrane

────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Shinichi Watanabe 1130 Nishihama, Wakayama City, Wakayama Prefecture (56) References JP-A-63-302926 (JP, A) JP-A-63-242258 (JP, A) JP-A Sho 63-242257 (JP, A) JP-A-2-31760 (JP, A) JP-A-57-86623 (JP, U) JP-A-63-38523 (JP, U) JP-A-2-136633 (JP, A) U) (58) Field surveyed (Int. Cl. ⁶ , DB name) A61H 33/02

Claims (4)

(57) [Claims] 1. A bath water is circulated in contact with the surface of the hollow fiber type semipermeable membrane, and carbon dioxide gas is fed into the hollow of the hollow fiber type semipermeable membrane to form the hollow fiber type semipermeable membrane. Generating carbonic acid hot water by dispersing and absorbing carbon dioxide gas as fine bubbles through the hollow fiber type semipermeable membrane in the bath water flowing in contact with the surface to generate carbonic acid hot water. Method. 2. A dispenser having a driving device for flowing bath water, a hollow fiber type semi-permeable membrane in contact with the surface of the bath water distributed by the driving device, and a hollow fiber type semi-permeable membrane of the disperser. The carbon dioxide gas is fed into the hollow of the membrane and dispersed in bath water flowing in contact with the surface of the hollow fiber type semipermeable membrane as fine bubbles through the hollow fiber type semipermeable membrane. And a carbon dioxide gas supply device for absorbing water. 3. A hollow fiber type semipermeable membrane is immersed in bath water, carbon dioxide gas is fed into the hollow of the hollow fiber type semipermeable membrane, and the carbon dioxide gas is passed through the hollow fiber type semipermeable membrane. A method for producing carbonated hot water for bath water, comprising dispersing and absorbing fine bubbles in said bath water to generate carbonated hot water. 4. A disperser having a hollow fiber type semi-permeable membrane which is left standing in bath water to bring the surface into contact with the bath water, and a carbon dioxide gas in the hollow of the hollow fiber type semi-permeable membrane of the disperser. And a carbon dioxide gas supply device for dispersing and absorbing carbon dioxide gas as fine bubbles in the bath water through the hollow fiber type semi-permeable membrane through the hollow fiber type semipermeable membrane. apparatus.