JPH08215270A - Carbonic acid spring preparing apparatus with cleaning and heat retaining functions - Google Patents

Abstract

PURPOSE: To prepare simply a carbonic acid spring with a high concn. in a bathtub at home and to obtain 24 hours bath with cleaning and heat retaining functions by arranging a filter, a filter tool, a sterilization apparatus, a heater and a carbon dioxide gas dissolver in a circulation flow path in which the hot water in the bathtub is forcibly circulated outside the bathtub. CONSTITUTION: Hot water in a bathtub is forcibly circulated in a circulation flow path 2 of the outside of the bathtub by means of a circulation pump 1 and is cleaned in a filter tool 5 through a filter 4 and is sterilized in a sterilization apparatus 6 with an ozone generating or a UV irradiating means. Then, after the temp. of the hot water is measured by means of a temp. sensor 7, it is heated by means of a heater 8. Thereafter, the hot water is introduced into a carbon dioxide gas dissolver 9 and is turned into a carbonic acid spring with a high concn. and is returned to the bathtub 3. The heater 8 is pref. arranged on the upstream of the carbon dioxide gas dissolver 9 and hollow fiber membranes are built in the carbon dioxide gas dissolver 9, which has a function for dissolving carbon dioxide gas from a carbon dioxide gas bomb 10 into the hot water through the membrane face of these hollow fiber membranes.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for producing carbonated spring, which is capable of easily obtaining a physiologically effective carbonated spring and has a purifying heat retaining function.

[0002]

2. Description of the Related Art Recently, while keeping the hot water in a bathtub at an appropriate temperature,
The household circulating warm bath (24-hour bath) that purifies waste products and scales that have left the body and mixed with the hot water through a filter, and can be used for recycling, is popular because it can be bathed 24 hours a day. ing. In addition, bathing agents are widely used that make you feel like a hot spring just by dissolving them in the bath water.

[0003] However, the domestic circulating warm bath has only a purifying function, while the bathing agent cannot be used in the domestic circulating warm bath, and has both a hot spring function and a 24-hour bath function. There was nothing.

Since carbonated spring has an excellent heat retaining effect,
It has been used for a long time in bathhouses that use hot springs. It is considered that the heat retaining effect of the carbonated spring is basically because the body environment is improved by the peripheral vasodilatory effect of the contained carbon dioxide gas.
Further, percutaneous invasion of carbon dioxide causes an increase and expansion of the capillary bed, improving blood circulation in the skin.

Therefore, it is said to be effective for treating degenerative lesions and peripheral circulatory disorders. Since carbonated springs have such excellent effects, attempts have been made to artificially mix them. For example, carbonated hot water has been obtained by feeding carbon dioxide gas in the form of bubbles into a bath, a chemical method of acting a carbonate and an acid, and a method of pressurizing hot water and carbon dioxide gas in a tank under pressure for a certain period of time.

However, in the conventional method for producing carbonated hot water,
There is no device that can be easily used in a bathtub at home, and in the chemical method, a large amount of chemicals must be added in order to reach a carbon dioxide concentration of 300 ppm, and a high concentration carbonated spring can be produced in a bath at home. A device was desired.

[0007]

SUMMARY OF THE INVENTION An object of the present invention is to provide a carbonated spring producing apparatus having a 24-hour bath function, which can easily produce a high-concentration carbonated spring in a bathtub at home and also has a purifying heat retaining function. Especially.

[0008]

That is, the present invention relates to a carbonated spring manufacturing apparatus comprising a circulation pump for forcibly circulating hot water in a bathtub outside the bathtub and a circulation flow path therefor. In the flow path, filter, filter, sterilizer,
A carbonated spring manufacturing apparatus characterized by comprising a heater and a carbon dioxide gas dissolver.

As a carbon dioxide gas dissolver used in this carbonated spring manufacturing apparatus, a carbon dioxide gas dissolver has a pipe body having a hot water inlet, a carbonated spring outlet, and a carbon dioxide gas inlet.
A perforated tube having a blocked tip is disposed, and a hollow fiber membrane is arranged around the perforated tube coaxially with the perforated tube, and at least one end of the hollow fiber membrane is maintained in an open state to introduce a carbon dioxide gas inlet. It is preferable that the inlet of hot water communicates with the inside of the porous tube, and the outlet of the carbonated spring communicates with the outer surface of the hollow fiber membrane and the outer surface of the porous tube.

The present invention will be described in more detail below with reference to the drawings.

FIG. 1 shows an example of an apparatus for producing carbonated spring according to the present invention. The hot water in the bathtub is forcibly circulated in the circulation flow path 2 outside the bathtub by the circulation pump 1. That is, the hot water discharged from the bath 3 is supplied to the filter 5 through the filter 4 and purified therein, and the sterilizer 6 sterilizes bacteria and the like in the hot water. After the temperature of the hot water flowing through the circulation channel is measured by the temperature sensor 7, it is heated by the heater 8,
After that, the carbon dioxide gas is introduced into the carbon dioxide gas dissolver 9, and the carbon dioxide gas is dissolved into a high-concentration carbonated spring, which is returned to the bath 3. In addition,
The installation positions of the circulation pump, the carbon dioxide gas dissolver and the like in the circulation passage are not limited to this example.

The filter 4 traps large dusts mixed in warm water to prevent the filter 5 from immediately closing or the hollow fiber membrane in the carbon dioxide gas dissolver from being contaminated. It is preferable to arrange it at the most upstream side of the circulation channel 2. A metal wire mesh, a sintered material, a plastic non-woven fabric, or a porous body can be used for the filter. The finer the pore size, the better it is, but if it is too fine, the resistance will increase. It is preferably in the range of μm.

The filter 5 has a function of removing wastes, scales, etc. that have come out of the body and mixed in the hot water, and for example, a filter using a filtering means such as ceramics, activated carbon or barley stone can be used. The filter 5, together with the filter 4, also plays a role of preventing the hollow fiber membrane in the carbon dioxide gas dissolver from being contaminated and lowering the carbon dioxide gas dissolving ability. Therefore, the filter is preferably arranged downstream of the filter in the circulation channel and upstream of the sterilizer and the carbon dioxide gas dissolver.

The sterilizing device 6 has a function of sterilizing bacteria and the like that enter the bathtub and corrode water to maintain the water quality of the carbonated spring. For example, ozone is generated or an ultraviolet ray irradiation means is provided. Things can be used.

The heater 8 is a heating source for heating hot water, and the heating source may be gas, petroleum, electricity or the like. Usually, the temperature sensor installed inside or upstream of the bath detects the temperature of hot water, and the amount of heat generated is controlled so that the temperature inside the bath maintains a predetermined temperature. The heater is preferably arranged upstream of the carbon dioxide dissolver.
If a heater is arranged downstream of the carbon dioxide gas dissolver, the dissolved carbon dioxide gas may precipitate in a gaseous state by heating, which is not preferable from the viewpoint of safety.

The carbon dioxide dissolver 9 contains a hollow fiber membrane,
It has a function of dissolving the carbon dioxide gas from the carbon dioxide gas cylinder 10 in warm water through the membrane surface of the hollow fiber membrane.
It is sectional drawing which shows an example of the carbon dioxide gas dissolver used for the carbonated spring manufacturing apparatus of this invention.

The hot water supplied from the hot water inlet 21 is first of all contained in the pipe body 22 which constitutes the main body of the carbon dioxide gas dissolver.
It is guided into the inner perforated tube 23 whose tip is blocked. Around the porous tube, hollow fiber membranes 24 are arranged coaxially with the porous tube, both ends of which are fixed with a potting agent 25 while maintaining an open state, and an outer porous tube 29 covers the outer periphery thereof. The hollow portion of the hollow fiber membrane communicates with the carbon dioxide gas inlet 26 and the drain outlet 27 and is liquid-tightly shut off from the flow path of the hot water. The warm water flowing out from the holes of the inner perforated pipe radially flows across the surface of the hollow fiber membrane in which the carbon dioxide gas supplied from the carbon dioxide gas inlet 26 flows into the hollow portion thereof, and when contacting the hollow fiber membrane surface, Carbon dioxide is dissolved in warm water, passes through the holes of the outer perforated pipe, and is taken out from the carbonated spring outlet 28.

In order to keep the carbon dioxide concentration of the carbonated spring in the bath 3 constant, a pH sensor 11 is provided in the bath, and the carbon dioxide cylinder 10 is measured by the carbon dioxide concentration measurement signal.
The supply amount of carbon dioxide gas to the carbon dioxide gas dissolver 9 can be adjusted by controlling the opening degree of the opening / closing valve 12 of FIG.

As the hollow fiber membrane used in the carbon dioxide gas dissolver 9, various hollow fiber membranes can be used as long as they have excellent gas permeability. A particularly preferred hollow fiber membrane is a composite hollow fiber membrane having a three-layer structure in which both sides of a thin film-like non-porous layer are sandwiched by porous layers. For example, a three-layer composite hollow fiber membrane (MHF) manufactured by Mitsubishi Rayon Co., Ltd. Is mentioned. FIG. 3 is a schematic view showing an example of such a composite hollow fiber membrane, 31 is a non-porous layer,
32 is a porous layer.

Here, the thin film non-porous layer (membrane) means
Any membrane may be used as long as it is a membrane through which a gas permeates a membrane substrate by a dissolution / diffusion mechanism and does not substantially include pores through which the gas is permeable like a Knudsen flow. By using a non-porous membrane with excellent gas permeability, gas can be supplied and dissolved without being released as bubbles at any pressure, efficient dissolution can be performed, and controllability to any concentration can be easily achieved. Can be dissolved. Also,
The hot water does not flow back to the gas supply side through the membrane.

As the membrane material of the hollow fiber membrane, silicone type, polyolefin type, polyester type, polyamide type, polyimide type, polysulfone type, cellulose type,
Polyurethane-based materials are preferred.

The inner diameter of the hollow fiber membrane is 50 μm or more and 1000 μm
m or less is desirable. If it is less than 50 μm, the flow path resistance of carbon dioxide gas flowing through the hollow fiber membrane becomes large, and sufficient carbon dioxide gas cannot be supplied. On the other hand, if it exceeds 1000 μm, the size of the dissolver becomes large and it cannot be made compact.

[0023]

The present invention will be described below in detail with reference to examples.

Example 1 A carbonated spring was manufactured using the carbonated spring manufacturing apparatus shown in FIG. The carbon dioxide gas dissolver 3 having the structure shown in FIG. 2 was used. The built-in hollow fiber membrane is a composite hollow fiber membrane with a three-layer structure, the inner diameter is 200 μm, and the inner layer and the outer layer are each 2
0 μm polyethylene porous membrane, intermediate layer has a thickness of 0.5
It consisted of a μm segmented polyurethane non-porous membrane and had an effective total membrane area of 1.8 m ² . The filter 4 is 100 mesh non-woven fabric, and the filter 5 is
What was filled with 5 kg of barley stone and 1 kg of granular activated carbon was used, and the sterilizer 6 provided with an ultraviolet irradiation lamp was used.

The hot water temperature in the bathtub is set to 40 ° C., hot water is sucked from the bathtub (hot water amount of about 200 liters) by the circulation pump 1,
It was circulated at a flow rate of 20 liter / min. At this time, the concentration of the carbonated spring was set to 500 ppm, and carbon dioxide gas was supplied from the carbon dioxide gas cylinder 10 to the carbon dioxide gas dissolver. When hot water was circulated under the above conditions to measure the carbonic acid concentration in the bath, it was found that the carbonated spring had a concentration of 500 ppm in 10 minutes. After that, four people took a bath in this bath for one day and continued this for 20 days, and continuously operated the carbonated spring manufacturing apparatus, but there was no problem in water quality, carbon dioxide concentration, and the like. The carbon dioxide concentration is from Toa Denpa Kogyo.
It was measured with an ion meter IM40S carbon dioxide gas electrode CE-235.

[0026]

EFFECT OF THE INVENTION According to the apparatus for producing carbonated spring of the present invention, it is possible to obtain a carbonated spring of high concentration at home, and since it has a heat-retaining function for purification, it is possible to take a bath in a clean hot spring at any time for 24 hours. .

[Brief description of drawings]

FIG. 1 is a schematic overall configuration diagram of a carbonated spring manufacturing apparatus of the present invention.

FIG. 2 is a schematic cross-sectional view of a carbon dioxide gas dissolver suitable for use in the present invention.

FIG. 3 is a schematic perspective sectional view showing a structure of a three-layer composite hollow fiber membrane suitable for use in the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Circulation pump 2 Circulation flow path 3 Bath 4 Filter 5 Filter 6 Sterilizer 7 Temperature sensor 8 Heater 9 Carbon dioxide dissolver 10 Carbon dioxide cylinder 11 PH sensor 12 Open / close valve 21 Hot water inlet 22 Tubular body 23 Internal porous pipe 24 Hollow fiber Membrane 25 Potting agent 26 Carbon dioxide gas inlet 27 Drain drain 28 Carbonate spring outlet 29 External porous tube 31 Non-porous layer 32 Porous layer

Claims (3)

[Claims] 1. A carbonated spring manufacturing apparatus comprising a circulation pump for forcibly circulating hot water in a bathtub outside the bathtub, and a circulation flow path therefor, wherein a filter and a filter are provided in the circulation flow path. An apparatus for producing carbonated spring, comprising: a sterilizer, a heater, and a carbon dioxide gas dissolver. 2. The manufacturing apparatus according to claim 1, wherein the heater is arranged upstream of the carbon dioxide gas dissolver. 3. The production apparatus according to claim 2, wherein the hollow fiber membrane is a composite hollow fiber membrane having a three-layer structure in which both sides of a thin film-like non-porous layer are sandwiched by porous layers.