JPH1177055A - Bath water sterilization apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To produce a stable concentration of hypochlorite ions irrespective of chlorine concentration in water by electrolysis and to generate hypochlorite ions having a high sterilization capacity in a short time in a bath water sterilization apparatus by hypochlorite ions generated by electrolysis which have high sterilization effects even in low concentration. SOLUTION: A means is provided which supplies hypochlorite ions 5 produced by electrolysis into a passage 15 for circulating bath water. An electrode 40 made from A1 is provided as a means for removing hypochlorite ions in the bath water after sterilization. Power is applied to the A1 electrode 40 immediately after the sterilization by hypochlorite ions to remove hypochlorite ions. A means is provided in which the surface 14 of a bathtub is added with ferrite ceramics and others to acquire antibacterial properties to control the generation of miscellaneous bacteria and protozoa.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bath water sterilizing apparatus for sterilizing and purifying bath water.

[0002]

2. Description of the Related Art In recent years, with the development of technology for sterilizing and purifying bath water, a device called a 24-hour bath has been widely used in ordinary households.

In a 24-hour bath, a. Keep bath water at a given temperature. B. Replenish when bath water is less than the prescribed amount. C. Remove trash in bath water. D. Perform sterilization to suppress the growth of bacteria. Such functions eliminate the need to replace (or reduce the frequency of) bath water cleaning, bathtub cleaning, and reheating.
It is possible to enjoy a clean bath anytime.

[0004] In particular, constant or periodic sterilization and purification of bath water is one of the important technologies from the viewpoint of hygiene.

[0005] As a sterilizing means, hypochlorite ion (C
lO ^-) methods are known by. Specifically, as shown in Japanese Patent Application Laid-Open No. 8-281280, sterilization with hypochlorous acid generated by performing electrolysis in tap water containing chlorine, and Japanese Patent Application Laid-Open No. 1-31587. There is a method in which sodium hypochlorite is added to bath water from a sodium hypochlorite tank and sterilized.

Further, JP-A-8-276185, a technique of the bath water circulating device by chlorine generated by non-diaphragm electrolysis are disclosed, ClO was mixed in the bath water ^- the concentration of ions and the chlorine Sufficient techniques have not been disclosed, such as the concentration of saline solution required for generation and the distance between electrodes.

As another means, Japanese Patent Application Laid-Open No. 4-2982
No. 99, a sterilization method using an ultraviolet lamp has been employed.

[0008]

The sterilization by hypochlorite ion can be sufficiently sterilized at a relatively low concentration.
Although it is one of the effective means for sterilizing bath water or the like because of its quickness, the above-mentioned conventional technology has the following problems.

First, when hypochlorite ions are generated by electrolysis using chlorine contained in tap water, there is an advantage that the apparatus is simplified, but the sterilization effect becomes unstable. There is. In other words, the chlorine concentration in tap water varies greatly depending on the distance from the water treatment plant and the season, especially in summer near the water treatment plant where the concentration is quite high, and conversely in winter it is far away from the water treatment plant. Then, even if the sterilization as tap water is sufficiently performed, the chlorine concentration is low to generate hypochlorite ion by electrolysis, the generation efficiency of hypochlorite ion is extremely reduced, and within a predetermined time Then, there is a possibility that sufficient sterilization is not performed. When well water is used, there is no chlorine, so that sterilization is not performed.

Furthermore, when sodium hypochlorite is added from a tank, sterilization can be performed regardless of tap water, well water, etc., but it is 50 to 100 times less than that of hypochlorite ion generated by electrolysis. If the concentration is not twice, the bactericidal effect is not sufficient, and a high concentration of sodium hypochlorite (hypochlorite ion) is required.

Further, sterilization by an ultraviolet lamp is easier to handle than sterilization by hypochlorite ions, but only the bath water coming near the ultraviolet lamp has a sterilizing effect. It has no effect on bacteria that have propagated, and it is difficult to cut off the breeding source of the bacteria.

Therefore, the present invention provides a bath water disinfection apparatus which has a high disinfection effect even at a low concentration and sterilizes by hypochlorite ions generated by electrolysis, and is stable regardless of the chlorine concentration in water. It is an object of the present invention to provide a bath water sterilizer capable of generating hypochlorite ions having a reduced concentration by electrolysis and capable of generating hypochlorite ions having high sterilizing ability in a short time. It is another object of the present invention to provide a bath water sterilizing apparatus that is effective against bacteria that have propagated on a bathtub wall, a filter, or the like.

[0013]

According to a first aspect of the present invention, there is provided a bath water circulation path in a bathtub, suction means provided in the circulation path for sucking the bath water, and the circulation system path. Sterilization means for sterilizing bath water provided therein, medicine supply means for supplying a medicine to the electrolytic cell, water supply means for supplying water to the electrolytic tank, water amount detection means for the bath water, In the circulating system, comprising a disinfecting component removing means configured to operate when removing the disinfecting component, wherein the disinfecting means is generated by electrolyzing a drug aqueous solution in an electrolytic cell. The electrolytic cell is configured to supply a sterilizing component, and the electrolytic cell is provided above the bath water level in the bathtub, and includes an anticorrosive electrode facing the electrolytic cell, and generates the sterilizing component by electrolysis in the electrolytic cell. When the electrolyzer is in the bath water Is configured to be substantially electrically insulated, and when supplying the sterilizing component generated in the electrolytic cell, the bath water is passed through the electrolytic cell in a state where the bath water is filled in the bath tub. A bath water sterilizer configured to supply water into the bathtub by watering is provided.

According to the present invention, the chemical agent is a water-soluble metal chloride such as sodium chloride, potassium chloride or calcium chloride, and the bactericidal component is mainly composed of hypochlorite ion. A bath water sterilizer according to claim 1 is configured.

According to a third aspect of the present invention, there is provided a bath water sterilizing apparatus according to the second aspect, wherein the supply means for supplying a chemical to the electrolytic cell is constituted by using a saturated solution of sodium chloride. It is characterized by.

Further, according to the present invention, the concentration of the alkali metal chloride and the alkaline earth metal chloride in the electrolytic cell is not less than 0.00171 mol / L and not more than the concentration of the saturated solution. A bath water disinfection device according to claim 3 is constituted.

Further, according to a fifth aspect of the present invention, in the corrosion-resistant electrode, at least the surface of the anode-side electrode is made of platinum;
5. The bath water sterilizer according to claim 2, wherein at least the surface of the cathode-side electrode is made of platinum or carbon.

According to a sixth aspect of the present invention, there is provided a bath water sterilizing apparatus according to any one of the second to fifth aspects, wherein a distance between the corrosion-resistant electrodes is 2 mm or more.

Further, the present invention according to claim 7 provides the above-mentioned corrosion-resistant material.
200A / m current density between conductive electrodes ^TwoClaims that are above
The bath water sterilizer according to any one of 2 to 6 was configured.
It is characterized by the following.

The present invention according to claim 8 is a bath water sterilizer according to any one of claims 2 to 7, further comprising means for issuing a warning when the electric conductivity in the electrolytic cell is less than a predetermined value. Is constituted.

According to a ninth aspect of the present invention, there is provided a bath water sterilizer according to any one of the second to eighth aspects, further comprising an electrolytic cell ventilation means which starts operating in conjunction with the start of hypochlorite ion generation. The apparatus is characterized in that the apparatus is configured.

Further, according to the present invention, the hypochlorite ion generated in the electrolytic cell in the bath water circulation path after the hypochlorite ion in the electrolytic cell reaches a predetermined value. The bath water according to any one of claims 2 to 9, wherein the bath water is supplied so that the hypochlorite ion concentration of the bath water in the bathtub is 4.85 x ^10-6 mol / L or more. It is characterized by comprising a sterilizer.

The present invention according to an eleventh aspect of the present invention is characterized in that the means for removing hypochlorite ion is aluminum, which constitutes the bath water sterilizing apparatus according to any one of the second to tenth aspects. .

According to a twelfth aspect of the present invention, the aluminum serves as an anode electrode, and further comprises a cathode, and the means for removing the hypochlorite ion by electrolysis is constituted.
The bath water disinfection device according to item 1 is constituted.

According to a thirteenth aspect of the present invention, the means for removing the germicidal component is a drug mainly composed of a reductive water-insoluble substance such as calcium oxalate or calcium sulfite. 13. A bath water disinfection device according to any one of the above items 12 to 12.

The present invention according to claim 14 is characterized in that the bath water containing the sterilizing component is overflowed from a bathtub, and the water amount detecting means detects that the bath water overflows. The bath water sterilizer according to any one of 1 to 13, is constituted.

According to a fifteenth aspect of the present invention, there is provided a bath water sterilizing apparatus according to any one of the first to fourteenth aspects, wherein a means for notifying that sterilization is being performed is provided in the bathroom. It is characterized by having done.

Further, the present invention according to claim 16 is provided with bathroom ventilation means provided in a bathroom, wherein the bathroom ventilation means is provided with the sterilizing component at the start of the production of the hypochlorite ion or in the bath water. The bath water sterilization apparatus according to any one of claims 2 to 15, wherein the operation is started in conjunction with the supply start time, and the bath water sterilization apparatus according to any one of claims 2 to 15 is configured to operate for a predetermined time from the supply start time of the sterilization component in the bath water. It is characterized by the following.

The present invention according to claim 17 is characterized in that at least the surface of the bath tub is made of a resin containing at least one of tourmaline, ferrite ceramics, and ceramics mainly containing calcium phosphate. A bath water sterilizer is constructed.

[0030]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A bath water sterilizer according to an embodiment of the present invention will be described below with reference to the drawings.

First, when the sterilized tap water is boiled to form bath water, the concentration of various bacteria in the bath water is measured after bathing two adults and two children on average, and almost no bacteria are present. However, after 10 hours, the measurement was about 10 ⁴
After 15 hours, it reaches about 10 < ⁶ > to 10 < ⁷ > cells / cc.

Bacteria that are not detected in the bath water immediately after bathing exist on the bathtub wall or on the scale of a filter or the like, and when bred to a certain extent, it is thought that they will float in the bath water and further propagate there. . Here, if sterilization is performed within several hours after bathing with hypochlorite ion by electrolysis, sterilization can be performed at a relatively low concentration and in a short time. That is,
When the concentration of hypochlorite ion is 0.25 ppm (0.25 ×
10 ⁻⁶ /51.5×1000=4.85×10 ⁻⁶ mol
/ L) and has a sufficient bactericidal effect. Hereinafter, specific embodiments will be described in detail.

(Embodiment 1) FIG. 1 is a schematic view of the configuration of a 24-hour bath incorporating a bath water sterilizer according to an embodiment of the present invention. The bathtub 1 is filled with bath water 13 and bathed. Although not shown in FIG. 1, in a bath that can be bathed at any time for 24 hours, a heater that keeps the temperature of the bath water 13 at a bathable temperature is installed in the middle of the circulation path. The bath water 13 entered through the entrance 16 is supplied to the pump 3 through the filter 2.
, When the valves 4 and 7 are closed,
It is returned into the bathtub 1 from the outlet 17 again. During this time, the scale, hair and the like contained in the bath water 13 are removed by the filter 2, but the scale, the hair and the bath wall 1 attached to the filter 2 are removed.
4 and slight bacteria attached to the circulation path wall cannot be removed.

After the family has taken a bath, the valve 4 and the valve 7 are opened, the inside of the electrolytic cell 5 is filled with bath water 13, and then the valve 4 and the valve 7 are closed. In the present embodiment, this capacity is about 1 L. Valve 8 and Valve 9
Is opened, and the saturated saline solution 10 is supplied to the electrolytic cell 5 by the supply pressure of fresh water 11 (tap water or the like) for a predetermined time so that the concentration of the saline solution in the electrolytic cell 5 becomes about 1000 ppm. Since the temperature of the concentration of the saturated saline solution is small, the concentration of the saline solution in the electrolytic cell 5 can be controlled even with such a configuration. After supplying the saturated saline by supplying fresh water 11 for a predetermined time, the valves 8 and 9 are closed. The concentration of the salt in the electrolytic cell 5 is 100 p
pm or more (100 × 10 ⁻⁶ /58.5×1000=1.
71 × 10 ⁻³ mol / L). At such a concentration, a sufficient concentration of hypochlorite ions can be generated by increasing the energizing current or shortening the energizing time somewhat.

Instead of determining the supply time of the fresh water, the concentration of the saline solution in the electrolytic cell is measured using a concentration sensor, and the supply of the fresh water is stopped when the concentration reaches a predetermined concentration. It may be.

In the electrolytic cell 5, a thin coat of platinum is coated on Ti.
25cm^TwoAbout 2 mm
It is attached at a distance. Electrode surface has excellent corrosion resistance
It is sufficient if it is coated with metal, for example, platinum or gold.
Those coated with metals are suitable. These metals are rare
Since they are small and expensive, they are usually used for Ni, Cr, Ti, etc.
Use precious metals thinly coated on sheet metal
You. With this configuration, a DC voltage of several volts is applied to the electrode 6,
If a current of 0.5 A or more is passed for about 10 minutes,
Produces less than 200 ppm of hypochlorite ion.
Electrode area 25cm ^Two0.5A or more current flows
And the current density is 0.5 A / 25 × 10^-Fourm^Two= 200A
/ M^TwoThat is all. If it is lower than this value, hypochlorite ion
Generation efficiency becomes extremely poor. Also, the distance between the electrodes is 2 m
If it is smaller than m, the generated bubbles will adhere,
The generation efficiency of chlorite ion becomes extremely poor. Between electrodes
If the distance is too far, the voltage applied between the electrodes will increase
This is not preferable from the viewpoint of insulation. Generally 2 to 30
mm is good.

When the concentration of the hypochlorite ion becomes 200 ppm or more, the application of the voltage to the electrode 6 is stopped, and the valves 4 and 7 are opened. The sodium hypochlorite generated in the electrolytic cell 5 is supplied into the circulation path, and the outlet 1
7 is supplied into the bathtub 1. The value of this concentration is different in different embodiments because the concentration of salt in the electrolytic cell 5, the amount of current, the area of the electrode, the interval between the electrodes, the capacity of the electrolytic cell, the temperature of the saline solution, and the like are different. In the case of the embodiment, it is almost determined by the time of 10 minutes. In addition, it is possible to detect the concentration of hypochlorite ion by detecting the current value. Conversely, the concentration of sodium chloride in the electrolytic cell 5, the amount of current, the area of the electrode,
If the distance between the electrodes, the capacity of the electrolytic cell, the temperature of the saline solution, and the like are known, the concentration of hypochlorite ion can be detected by detecting the time or current value. This eliminates the need for a hypochlorite ion sensor.

Usually, the bath water 13 in the bathtub 1 is about 200 liters, so that the concentration of sodium hypochlorite in the bath water 13 is 1 ppm (1 × 10 ⁻⁶ /51.5×100
0 = 1.94 × 10 −5 mol / L), and the salt concentration is 5 ppm or less. By circulating electrolytically generated hypochlorite ions (hereinafter referred to as electrolytic ClO ⁻ ) having a concentration of about 1 ppm, the wall of the bathtub 1, the filter 2, the pump 3
Among them, it was possible to sterilize all bacteria that proliferated in places where the bath water 13 was in contact, such as circulation paths.

[0039] after bathing, when it within a few hours, since the number of the generated bacteria is small, electrolytic ClO of a concentration of about 1ppm ^- it was found that even E. coli, the sterilization such as Legionella and other bacteria are effective.

Further, a quarter of this concentration, 0.25 pp
m (0.25 × 10 ⁻⁶ /51.5×1000=4.85)
In the case of (× 10 ⁻⁶ mol / L), the bacteria did not die much, but did not multiply and breed, and did not reach the problematic number of bacteria. Therefore, electrolytic ClO to this concentration ^- by setting the concentration of, it is possible to configure energy saving high 24-hour bath (bath water sterilizer).

[0041] (Embodiment 2) The method, also for tens of minutes after sterilization, electrolytic ClO into the bath water 13 ^- is left. Although hypochlorite ion is said to decompose at about 40 ° C., it may be unpleasant for a person who is sensitive to odor or who has allergic dermatitis when taking a bath. In the second embodiment, the electrolytic ClO ^- After sterilization, the residual electrolyte ClO ^- the bath water disinfection purification apparatus will be described to remove.

FIG. 2 is a schematic view of the configuration of a 24-hour bath incorporating a bath water sterilizer according to another embodiment of the present invention. The difference from the first embodiment is that in order to remove electrolytic ClO ⁻ in the bath water 13, the valve 21 branches off in the circulation path to form a dechlorinating agent (calcium sulfite) 23 and a valve 2.
2 is attached. Bath water 13 in this figure
Is omitted from the figure.

The method of sterilizing the bath water 13 is the same as in the first embodiment, and a description thereof will be omitted. After the sterilization is completed, the valve 21 is closed, the valve 22 is opened, and the bath water 13 is passed through a dechlorinating agent (calcium sulfite) 23. Bath water 13
The hypochlorite ion present in the water reacts with the dechlorinating agent (calcium sulfite) 23 to become CaSO ₄ and is removed from the bath water 13. That is, ClO ⁻ + CaSO ₃
→ CaSO ₄ + Cl ^- is removed becomes the reaction. In addition to calcium sulfite, any material may be used as long as it is mainly composed of a substance which is hardly soluble in reducing water such as calcium oxalate.

Even after sterilization, if hypochlorite ions are present in the bath water 13, although the concentration is relatively low, a smell of chlorine is obtained. However, since it is completely removed from the bath water 13, no chlorine smell is present. It has become possible to enjoy comfortable bathing.

[0045] In these embodiments, after bathing, within a few hours electrolysis ClO ^- the sterilization by the have been described to be effective, for a long time elapses after sterilization, bacteria, etc. floating in the air is bath water 13 and may breed. In order to prevent bacteria from growing in the bath water 13, it is necessary to periodically sterilize the bath water. In the case of the present embodiment, once sterilized, a sufficient sterilizing effect was obtained only by sterilizing about three times a day every eight hours.

The salt concentration in the electrolytic cell 5 is set to 1000 p.
pm, and a current of about 0.5 A is passed for 10 minutes to generate electrolytic ClO ⁻ by chlorine generated on the anode surface. Chlorine that has not contributed to the generation of electrolytic ClO ⁻ goes out as a gas. In this case, since the time is short, the amount of chlorine going out is very small.

In order to prolong the life of the electrode, as a method of adding to the electrode 6 in the electrolytic cell 5, a voltage pole is changed at each electrolysis, a voltage pole is randomly changed at each electrolysis, There is a way to change it inside. At this time, it is desirable that the surfaces of both electrodes are covered with platinum.

[0048] The salt concentration in the electrolytic cell 5 to about 100 ppm, even when the current value was about 0.5A, electrolytic ClO sufficient amount by extending the energization time ^- can be generated, energization Because the time is long, the salt concentration is 100
About 0 ppm is preferable. In this case, than to increase the current value, better to increase the energization time, the electrolytic ClO against input energy ^- generation efficiency was high.

(Embodiment 3) FIG. 3 is a schematic configuration diagram of a bath water sterilizer according to another embodiment of the present invention.
It described in Embodiment 2, but after the sterilization electrolytic ClO bath water ^- is attached branches calcium sulfite to remove in the circulation path.

In the control box 33, in addition to those connected by broken lines, control of an electromagnetic valve (not shown) is performed, but not shown. As shown in the figure, a switch 34 for starting sterilization provided in the control box 33 in the bathroom.
, Alarm display 35, etc., bathroom ventilation fan 31, electrolytic bath ventilation fan 32
And the electrodes 6 and the like in the electrolytic cell 5 are connected. Further, a water level sensor 36 is also connected.

The switch 34 for starting sterilization can be operated manually, or can be set to perform sterilization automatically.

In the case of performing sterilization automatically, the frequency of sterilization is set according to the number of people taking a bath and the bathing interval, or the sterilization is set to be performed automatically at a preset time or at a predetermined time interval. be able to.

By manually switching the switch 34, the sterilization can be started whenever desired, and the sterilization can be prevented from being automatically started during bathing. Immediately after bathing, that is, if to manually start the sterilization before bacteria proliferate, to less time time required for sterilization also, the low concentration of the electrolyte ClO ^- it is possible to sufficiently sterilized.

Whether sterilization is performed automatically or manually, an alarm display 35 during sterilization is turned on during sterilization.

When a saline solution is introduced into the electrolytic cell 5 and the electrode 6 is energized, the ventilating fan 32 is operated in conjunction therewith, and hydrogen gas and chlorine gas generated in the electrolytic cell 5 are stored in the electrolytic cell 5. I did not.

For example, when the salt concentration in the electrolytic cell 5 is 1000 p
When the voltage is applied to the electrode 6 at pm and a current of 0.5 A or more flows, the amount of hydrogen gas and chlorine gas generated at the maximum is about 5 to 10 cc / min. If the hydrogen gas concentration is more than 4% in an oxygen atmosphere, there is a risk of explosion.
The risk of explosion is eliminated by installing the electrolytic cell ventilation fan 32 that supplies the air of 00 cc or more to the periphery of the electrolytic cell 5.

[0057] Further, electrolytic ClO generated in the electrolytic cell 5 ^- a in conjunction with the feeding to the circulation path by opening the electromagnetic valve 7 moves the bathroom exhaust fan 31 installed in the bathroom, the odor of chlorine in the bathroom Prevent stagnation. In particular, when trying to sterilize not only the bath water 13 in the bath tub 1 but also the periphery of the bath tub 1 and overflowing the bath water 13, there may be a slight chlorine smell.
Ventilation by 1 is extremely important. Although the bathroom ventilation fan 31 may be operated manually, it is possible to prevent the ventilation from being insufficient by preventing the bathroom ventilation fan 31 from being stopped until a predetermined time has elapsed after the end of sterilization.

Although it seems that the bath water is wasted when the bath water overflows every time of sterilization, the amount is much smaller than that when the bath water 13 is discarded and the bathtub 1 and the periphery of the bathtub 1 are washed and sterilized. And sterilization and washing can be performed effectively with little effort.

The water level of the bath water 13 is sensed by installing electrode sensors at several places in the bathtub 1. Normally, bath water is not filled to fill the bathtub in consideration of the rise in water level when a person enters. In the present embodiment, an electrode sensor is provided near the upper end of the bathtub or on the outer wall, and the amount of bathwater is controlled to be larger than normal or overflow, thereby removing dirt that tends to collect near the water surface of the bathtub wall. It also makes it possible to sterilize the edge of the bathtub and the outer wall.

After sterilization, as described in (Embodiment 2), calcium sulphite is passed through to remove hypochlorite ions, and bath odor is removed during bathing. The effects of sterilization and the like are as described in the second embodiment.

Further, since the electrolytic bath 5 is installed at a position higher than the bath 1, even if the bath 1 is filled with bath water 13, the valve 7 is opened to completely drain the electrolytic water from the electrolytic bath 5. be able to. Therefore, the electrode 6 can be prevented from being contaminated or corroded by impurities, and the life of the electrode 6 can be extended.

When a predetermined conductivity is not reached when the electrolysis is started by supplying the saline solution to the electrolytic cell 5, the electrolytic solution necessary for sterilization due to lack of salt or contamination of the electrode 6 is obtained.
lO ^- because there may not be obtained, it was to inform the bather in the alarm display 35.

In the present embodiment, it is assumed that bath water is sterilized, and a conventional gas bath is used for reheating.

(Embodiment 4) FIG. 4 is a schematic configuration diagram of a 24-hour bath incorporating a bath water sterilizer according to a different embodiment of the present invention. In the second embodiment, a dechlorinating agent (calcium sulfite) 23 branches off from a valve 21 in a circulation path to remove electrolytic ClO ⁻ in bath water 13.
And is fitted with a valve 22, in this way, efficient electrolytic ClO ^- but is removed, since the calcium sulfite is the reaction proceeds by changing the calcium sulphate,
Calcium sulfite is consumed over time. Therefore, there is a need to regularly supplement calcium sulfite and the like.

Therefore, in the present embodiment, as shown in FIG. 4, an anode and a cathode composed of an Al electrode 40 are provided in the circulation path of bath water, and the bath water in the bath tub is supplied with electrolytic ClO ⁻ generated in the electrolytic bath 5. After sterilizing bacteria and the like that propagated in the bathtub wall and the circulation path of bath water for a predetermined period of time, a DC current was immediately passed through the anode and the cathode made of Al, so that Al ³⁺ ions and hypochlorite ions eluted from the anode were ^removed. (ClO ^- ion) to remove hypochlorite ion. The main reaction formula is 2Al ³⁺ + 3ClO ⁻ + 3H ₂ O → 2Al (OH) ₃ +
3Cl ^- we are. Since the concentration of hypochlorite ion is at most several ppm, if the amount of Al in the Al electrode 40 is several hundred g, it can be used for at least five years. The life of the anode and the cathode can be extended by alternately replacing the anode and the cathode after a predetermined time has elapsed. The same effect can be obtained by changing the polarity. Can be removed quickly, even simply have to not play only functions as aluminum plate does not energize the electrolytic ClO ^{- -} This electrode is better to energized electrolytic ClO can be removed.

[0066] Further, electrolytic ClO ^- in order to generate, in the electrolytic cell 5 had been supplying bathwater in (Embodiment 1-3), in the present embodiment (such as tap water) Shinmizu Is supplied. Because the bath water is rich in impurities, the electrolyte ClO ^- varies occurred concentration. Electrolytic ClO ^- after generating a valve 4, to open the valve 7, electrolytic ClO ^-
Mixed in the circulating water 15 and supplied into the bathtub 1.

Further, tourmaline 41 was added to the surface of bathtub 1.
Are selectively distributed. The bathtub shown in the first to third embodiments is made of only resin or stainless steel, and the bathtub itself has almost no sterilizing action. So electrolytic ClO ^-
Was used to sterilize bath water.

However, when taking an actual bath, the germs in the bath water are not so noticeable because the bacteria are not seen, but the slime and dirt on the bath wall are felt as unpleasant.

If the user forgets to turn on the power,
lO ^- in, such as malfunction of the generator, a long period of time if the sterilization of the bath water is not performed, bacteria breed, slime and dirt stick to the Yokukabe.

The main causes of slime are bacteria and products produced by the bacteria and dead bacteria, but it has recently been found that protozoa such as amoeba inhabit the bacteria in search of bacteria. Genus Acanth amoeba, Hartmannella
The genus or Vannella has become a social problem because it is a host for Legionella spp., But some species are pathogenic in the account amoeba itself. Most are protozoa that are not pathogenic, whereas Negrelia is pathogenic.
When these protozoa breed, they should enjoy comfortable bathing, but they would be unpleasant.

Therefore, the surface of the bath is made to have antibacterial properties by mixing not only resin but also powder of tourmaline 41, ferrite-based ceramic containing triiron tetroxide as a main component, or ceramic powder containing calcium phosphate as a main component. Thus, the generation of protists can be suppressed. Ferrite ceramics in particular, protein-based stains,
Since biofilms composed of polysaccharides were decomposed, no slime was generated. Therefore, it became possible to enjoy a comfortable bath without slime. These ceramics can be used semi-permanently. In addition, since no slime is generated, the bath wall is not stained, and it is not necessary to clean the inside of the bathtub.

[0072]

According to the bath water disinfection apparatus of the present invention, sodium hypochlorite is previously generated in the electrolytic cell before disinfecting the bath water. Sodium acid can be produced and the concentration of salt dissolved in bath water is low.

During the production of sodium hypochlorite,
By separating the electrolytic cell and the circulation path with two valves, there is no risk of electric shock even when bathing during the production of sodium chlorite.

Further, after the supply of sodium hypochlorite to the circulation path, the electrolysis water containing salt does not remain in the electrolytic cell, so that the life of the electrode can be extended.

Further, there is provided a means for monitoring whether the amount of salt required for generating sodium hypochlorite required for sterilization by monitoring the conductivity in the electrolytic cell is supplied, and issuing a warning when the amount is insufficient. This can prevent sterilization from becoming insufficient.

Further, by detecting the level of bath water in the bath tub, the bath tub is filled or overflowed with bath water.
It is possible to sterilize not only the bathtub but also around the bathtub.

Further, by providing means for ventilating the gas generated with the generation of sodium hypochlorite, the safety of the apparatus is improved.

Although calcium sulfite is consumed in a relatively short time, it must be replenished periodically.
By using the Al electrode, replenishment of calcium sulfite became unnecessary, and maintenance-free.

Further, since the bathtub has an antibacterial property,
The unpleasant slime disappeared, and comfortable bathing became possible.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram of a 24-hour bath incorporating a bath water sterilizer according to an embodiment of the present invention.

FIG. 2 is a schematic view of the configuration of a 24-hour bath incorporating a bath water sterilizer according to a different embodiment of the present invention.

FIG. 3 is a schematic configuration diagram of a bath water sterilizer according to a different embodiment of the present invention.

FIG. 4 is a schematic configuration diagram of a 24-hour bath incorporating a bath water sterilizer according to a different embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Bathtub 2 Filter 3 Pump 4,7,8,9,20,21,22 Valve 5 Electrolysis tank 6 Electrode 10 Saturated saline 11 Fresh water 12 Salt 13 Bath water 14 Bath wall 15 Circulating water 16 Entrance 17 Exit 23 Dechlorination Agent (calcium sulfite) 31 bathroom ventilation fan 32 electrolytic bath ventilation fan 33 control box 34 switch 35 alarm display 40 Al electrode 41 tourmaline

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁶ Identification code FI C02F 1/50 520 C02F 1/50 531P 531 540B 540 550H 550 550D 550L 560F 560 560Z 1/70 Z 1/70 1/76 A 1 / 76 C25B 1/26 C C25B 1/26 C02F 1/46 101Z

Claims (17)

[Claims] 1. A circulation path for bath water in a bathtub, suction means provided in the circulation path for sucking the bath water, and sterilization means provided in the circulation path for sterilizing bath water. A case in which the sterilizing component is removed from the medicine supply means for supplying a medicine to the electrolytic cell, the water supply means for supplying water to the electrolytic cell, the water amount detecting means for the bath water, and the circulating system. The sterilizing means is configured to supply a sterilizing component generated by electrolyzing a drug aqueous solution in an electrolytic cell, wherein the electrolysis is performed. The bath is provided above the bath water surface in the bath tub, and includes opposed corrosion-resistant electrodes.When the sterilizing component is generated by electrolysis in the electrolytic bath, the electrolytic bath is different from the bath water. Is configured to be substantially electrically insulated When supplying the sterilizing component generated in the electrolytic bath, the bath water is supplied to the bath by passing the bath water through the electrolytic bath in a state where the bath water is filled in the bath. Bath water sterilizer. 2. The drug is a water-soluble metal chloride such as sodium chloride, potassium chloride, calcium chloride, etc.,
The bath water disinfection device according to claim 1, wherein the disinfecting component is mainly composed of hypochlorite ion. 3. The bath water disinfection device according to claim 2, wherein the supply means for supplying the drug to the electrolytic cell is constituted by using a saturated solution of sodium chloride. 4. The concentration of an alkali metal chloride and an alkaline earth metal chloride in an electrolytic cell is 1.71 × 10 ⁻³ mol / L.
4. The method according to claim 3, wherein the concentration is not more than the concentration of the saturated solution.
The bath water sterilizer according to the above. 5. The bath water disinfection device according to claim 2, wherein the corrosion-resistant electrode has at least a surface of platinum on an anode side electrode and at least a surface of platinum or carbon on a cathode side electrode. 6. The bath water sterilizer according to claim 2, wherein a distance between the corrosion-resistant electrodes is 2 mm or more. 7. The current density between the corrosion-resistant electrodes is 200 A /
The bath water disinfection device according to any one of claims 2 to 6, which has a m ² or more. 8. The bath water sterilizer according to claim 2, further comprising means for issuing a warning when the conductivity in the electrolytic cell is less than a predetermined value. 9. An electrolytic cell ventilation means for starting operation in conjunction with the start of hypochlorite ion generation.
The bath water sterilizer according to any one of the above. 10. A method for supplying hypochlorite ion generated in said electrolytic cell to a bath water circulation path after hypochlorite ion in said electrolytic cell reaches a predetermined value. Bath water has a hypochlorite ion concentration of 4.85 × 10 ^-6 mo
The bath water sterilizer according to any one of claims 2 to 9, wherein the bath water sterilizer is configured to be 1 / L or more. 11. The bath water sterilizer according to claim 2, wherein said means for removing hypochlorite ions is aluminum. 12. The bath water disinfection apparatus according to claim 11, wherein said aluminum serves as an anode electrode, further comprising a cathode, and means for removing said hypochlorite ion by electrolysis. 13. The method according to claim 2, wherein the means for removing the bactericidal component is a drug mainly composed of a reductive water-insoluble substance such as calcium oxalate or calcium sulfite.
The bath water sterilizer according to any one of the above. 14. The bath according to any one of claims 1 to 13, wherein the bath water containing the sterilizing component is overflowed from a bathtub, and the water amount detecting means detects that the bath water overflows. Water sterilizer. 15. The bath water disinfection device according to claim 1, further comprising means for notifying that sterilization is being performed in the bathroom. 16. A bathroom ventilation means provided in a bathroom, wherein the bathroom ventilation means operates in conjunction with the start of generation of the hypochlorite ion or the start of supply of the sterilizing component to the bath water. 3. The apparatus according to claim 2, wherein the apparatus is configured to start and operate for a predetermined time from the start of supplying the sterilizing component to the bath water.
16. The bath water sterilizer according to any one of the above items 15 to 15. 17. A bath water sterilizer wherein at least the surface of the bathtub is made of a resin containing at least one of tourmaline, ferrite-based ceramics, and ceramics containing calcium phosphate as a main component.