JP2001170636A - Water cleaning device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To control residual chlorine concentration in a bath time, in a water cleaning device for producing electrolytic water by electrolysis and sterilizing and purifying water. SOLUTION: An adapter 20 having an inflow and outflow port of water, a pump 21 for feeding water, an electrolytic means 23 having a filter 22 removable suspended matter in water, valves 24, 25 and 26 for controlling inflow into and outflow of water from the electrolytic means, and a chlorine compound removing means 27, are provided in a circulation flow path 19. Since a water circuit by which water does not pass through the electrolytic means 23 but water is made to pass thorough the chlorine compound removing means 27 by switching the valves 24, 25 and 26, can be formed, the residual chlorine concentration in water can be controlled while sterilization performance by electrolyzed water is maintained.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to purification of domestic tap water and bathtub water, and more particularly to sterilization of water by electrolyzed water generated by electrolysis.

[0002]

2. Description of the Related Art A conventional water purification apparatus of this type is disclosed in
What was described in -77055 was common. As shown in FIG. 7, this water purifying device has a bathtub 1 and a water circulation flow path 4 having an inlet 2 and an outlet 3 in the bathtub 1.
, A pump 5, a filter 6, an electrolytic cell 7, and a dechlorinating agent 8 (calcium sulfite) as a disinfecting component removing means, and a valve 9, which is located upstream and downstream of the electrolytic cell 7, There are provided valves 11 and 12 on the upstream and downstream sides of the dechlorinating agent 10 and the dechlorinating agent 8, and a valve 13 provided in the circulation path in parallel with the dechlorinating agent. Also, a saline solution 14 is placed in the electrolytic cell 7.
The pipes 17 are provided with valves 15 and 16 for supplying tap water and salt water from the pipe 17 to the electrolytic cell 7.

At the time of water purification, the pump 5 is operated to allow water in the bathtub 1 to enter through the inlet 2, pass through the filter 6, and return to the bathtub to remove scale and the like. Then, when sterilizing water, the valves 9 and 10 on the upstream and downstream sides of the electrolytic cell 7 are opened to fill the electrolytic cell 7 with water, and then the valves 9 and 10 are closed.
5 and 16 are opened, and the saline solution 14 is sent to the electrolytic cell 7 to generate hypochlorous acid by electrolysis. The hypochlorous acid generated here was sent to the bathtub 1 from the outlet, and the water in the bathtub 1 was sterilized. Further, after the sterilization is completed, a dechlorinating agent 8
By opening the valves 11 and 12 on the upstream and downstream sides of the bathtub, the water in the bathtub 1 is circulated and brought into contact with a dechlorinating agent to remove hypochlorous acid in the bathtub water and use it for bathing.

[0004]

However, the above-mentioned conventional water purification apparatus has the following problems.

(1) In the case of continuously using bath water, if the sterilizing component is removed after each sterilization, the surviving bacteria immediately start to proliferate, and the water in the bath becomes turbid.

(2) By removing the germicidal components after sterilization, the chlorine odor of the sterilized water is reduced, but the time for microorganisms such as bacteria in the water to contact the germicidal components is shortened, so that the germicidal effect is reduced. I do.

(3) After removing the sterilizing components in the bath water,
When injecting the bactericidal component again and sterilizing bath water, it is necessary to inject a certain amount of bactericidal component each time to maintain the bactericidal component concentration at a level where sufficient bactericidal power is obtained,
The consumption of sterilizing components increases.

[0008]

In order to solve the above-mentioned problems, the present invention has a means for circulating water in a bathtub in a circulation flow path and at least a pair of electrodes therein, and the electrolytic solution containing a chlorine compound by electrolysis. In a configuration comprising an electrolytic means capable of generating water and a chlorine compound removing means capable of removing a chlorine compound of water, the sterilizing and purifying water in the bathtub is continuously performed by adding the electrolytic water to water. By controlling at least one of the circulating means, the electrolytic means, and the chlorine compound removing means by the control means, the operation control for reducing the concentration of the chlorine compound in the water for a certain time during the sterilization is performed.

According to the present invention, electrolyzed water having a bactericidal effect can always be maintained at a concentration equal to or higher than a certain level in bath water other than during bathing, so that microorganisms such as bacteria in the water are always damaged by acidic substances. As a result, the maximum sterilization (or growth suppression) effect can be obtained with a small amount of electrolyzed water. If it is determined that you will not take a bath before the next sterilization, leave the chlorine compound in the water without removing it and leave it for a long time to damage microorganisms such as bacteria in the water until the next sterilization Therefore, effective sterilization can be performed, and at the same time, a chlorine compound can be expected to remain in water. Therefore, the same effect can be expected even if the amount of electrolyzed water added during the next sterilization is reduced.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A water purifying apparatus according to a first aspect of the present invention has a circulating means for circulating water in a bathtub in a circulating flow path and at least a pair of electrodes inside, and contains a chlorine compound by electrolysis. A configuration including electrolysis means capable of generating electrolyzed water and chlorine compound removal means capable of removing a chlorine compound of water, and continuously sterilizing and purifying water in a bathtub by adding the electrolyzed water to water. Wherein the control means controls at least one of the circulating means, the electrolytic means, and the chlorine compound removing means to control the operation of reducing the concentration of the chlorine compound in the water for a certain period of time during sterilization.

[0011] Since electrolyzed water having a bactericidal effect can always be maintained at a concentration equal to or higher than a certain level in bath water other than when bathing, microorganisms such as bacteria in the water can always be damaged by acidic substances. The maximum sterilization (or growth suppression) effect can be obtained with a small amount of electrolyzed water.

[0012] The water purifying apparatus according to claim 2 of the present invention comprises:
It has a flow path switching means capable of controlling the flow of water into and out of the chlorine supply means.

[0013] The water purifying apparatus according to claim 3 of the present invention comprises:
The electrolysis means and the chlorine compound removing means are provided in parallel.

When the electrolyzed water is injected into the bath, the electrolyzed water can be supplied to the bath without passing through the chlorine compound removing means, so that the electrolyzed water generated by the electrolyzing means can be used effectively.

[0015] The water purifying apparatus according to claim 4 of the present invention comprises:
The control means controls the removal of chlorine compounds in the water by the chlorine compound removal means at any time after or after the water is injected into the bathtub.

[0016] It is also possible to remove chlorine compounds in tap water immediately after pouring (including pouring), so that comfortable bathing can be performed immediately after pouring.

According to a fifth aspect of the present invention, there is provided a water purifying apparatus.
The chlorine compound removing means is configured to store a reducing agent therein so as to be able to contact the electrolyzed water or the water to be treated.

The use of the reducing agent makes it possible to remove the chlorine compound inexpensively and effectively.

[0019] The water purifying apparatus according to claim 6 of the present invention comprises:
The chlorine compound removing means is a catalyst capable of decomposing a chlorine compound in the electrolytic water.

By using a specific catalyst, the chlorine compound removal performance can be maintained for a long period of time, so that a stable chlorine compound removal performance can be obtained.

[0021] The water purifying apparatus according to claim 7 of the present invention comprises:
The chlorine compound removing means is characterized by being an adsorbent capable of adsorbing a chlorine compound in the electrolytic water.

Since not only chlorine compounds but also organic substances in water at the same time as chlorine compounds can be removed, odors derived from these substances can be reduced.

[0023] The water purification apparatus according to claim 8 of the present invention comprises:
The chlorine compound removing means is an ultrasonic wave generating means capable of generating ultrasonic waves, and is characterized by decomposing chlorine compounds by ultrasonic waves.

By removing the chlorine compounds in the water by generating ultrasonic waves with the ultrasonic generator, not only the structure of the chlorine compound removing means can be simplified, but also the cluster of water can be reduced. So try bathing in water that is gentle on your skin.

According to a ninth aspect of the present invention, there is provided a water purifying apparatus.
The chlorine compound removing means is an ultraviolet light irradiating means for irradiating ultraviolet light, and is characterized in that the chlorine compound is decomposed by the ultraviolet light.

Since the chlorine compounds can be decomposed by ultraviolet rays and bacteria in water can be sterilized by ultraviolet rays, effective sterilization can be achieved.

[0027]

Embodiments of the present invention will be described below with reference to the drawings.

(Embodiment 1) FIG. 1 is a configuration diagram showing a water purification apparatus according to Embodiment 1 of the present invention.

In FIG. 1, reference numeral 18 denotes a bathtub,
9 includes an adapter 20 having an inlet and an outlet for water.
A pump 21 for feeding water into the circulation flow path 19; an electrolytic means 23 having a filter 22 capable of removing suspended substances in the water; and a flow for controlling inflow and outflow of water to the electrolytic means 23 and the chlorine compound removing means. Valves 24, 25, 26 of path switching means
And chlorine compound removing means 27. Valve 2
The channel 4 is connected to a drainage channel 29 connected to the valve 26 via a channel 28 and at the same time is connected to the electrolysis means 23 via a channel 30. Here, the electrolytic means 23 and the chlorine compound removing means 37 are arranged in parallel on the circulation channel 19.

The electrolytic means 23 has a filter 22 inside, and a bypass 31 is provided downstream of the filter 22, and electrodes 32 and 33 are provided here. A pump 37 for feeding the water in the circulation channel 19 into the salt tank 34 is provided in a salt channel 35 connecting the salt tank 34 and the electrolysis means 23 and a water supply channel 36 connecting the salt tank 34 and the circulation channel 19. I have. Valves 24, 25, 26, pumps 21, 37
Is controlled by the control device 38. By setting a time zone for taking a bath and the number of people taking a bath with the control device 38, it is possible to take a bath with clear water without turbidity in a time zone for taking a bath.

The filter 22 is a pleated filter, in which water entering from the outside is filtered and enters a hollow portion 39 inside.
A diaphragm 40 is disposed between the two.

FIGS. 2A to 2C are diagrams showing the structure of the chlorine compound removing means 27. In this embodiment, the chlorine compound removing means having the structure shown in FIG. 2A is used. The tank 41 is filled with an aqueous solution of ascorbic acid 44 as a reducing agent, and the aqueous solution of ascorbic acid 44 is sent to the circulation channel 19 through the channel 43 by the pump 42. In addition, ascorbic acid aqueous solution 44
Is controlled by controlling the valves 24, 25, 26 and the pump 42 by the control device 38. In this embodiment,
Add acid (citric acid, hydrochloric acid, etc.) to this ascorbic acid aqueous solution
To prevent the decomposition of ascorbic acid due to the propagation of bacteria in the aqueous solution.

By providing a check valve for preventing the backflow of water from the circulation passage 19 in the passage 42, the flow of water into the tank 41 in the circulation passage 19 can be suppressed.
It is desirable to install as necessary.

Next, the operation and operation will be described. Bathtub 1
The water in 8 is sent from pump 20 to circulation channel 19 by pump 21. Thereafter, the water in the circulation flow path 19 enters the electrolysis means 23, and the suspended matter contained in the water is filtered off by the filter 22 inside. And water is in circulation channel 1
By returning from 9 to the adapter 20 and being discharged into the bath 18, the turbidity of the water is kept below a certain level. However, this operation alone cannot suppress the growth of bacteria in the water, so that the water may become turbid. Assuming such a case, electrolysis is performed periodically to generate electrolyzed water (water containing chlorine compounds such as hypochlorous acid, hypochlorite ions, and active chlorine), and sterilize the water. I have. That is, in a state where the pump 21 is stopped, the pump 37 is operated, and the salt solution in the salt tank 34 is discharged from the salt channel 35 through the electrolysis means 23.
Between the electrodes 32 and 33. Then, the electrodes 32, 3
A direct current is applied to 3 to perform electrolysis. In electrolysis, not only electrolyzed water but also oxygen and hydrogen bubbles are generated. The air bubbles generated here pass through the bypass passage 31 above the electrode 32.
And water flows upward in the bypass passage 31. By this flow, a circulating flow is generated between the hollow portion 39 on the downstream side of the filter 22 and the bypass passage 31, and electrolysis is performed while circulating in a space formed by the hollow portion 39 and the bypass passage 31. Thereby, the generation efficiency of the electrolyzed water is improved. After generating the electrolyzed water, the valves 25, 2
By switching 6 and starting the pump 21, the electrolyzed water stored in the bypass 31 and the hollow portion 39 is sent to the bath 18, and sterilization is performed. At this time, since the electrolyzed water has a water circuit that does not pass through the chlorine compound removing means 27,
Since a chlorine compound having a sterilizing property such as hypochlorous acid in the electrolyzed water generated by the electrolysis can be supplied to the bath 18 without being removed, the electrolyzed water can be effectively used, and the sterilizing performance can be improved. .

In this manner, the water in the bathtub 18 is sterilized. Bacteria in the water start to proliferate immediately when the concentration of electrolyzed water in the water (particularly, the residual chlorine concentration) is reduced.
The water in 8 causes turbidity. Therefore, even if the number of bacteria in the bathtub water falls below the target level, the residual chlorine concentration in the water is kept at a constant level (specifically, the total residual chlorine concentration is kept at 0.2 ppm or more, preferably 0.3 ppm or more). You need to control. However, adding electrolyzed water to the bath water (bathing water)
Even if the residual chlorine concentration immediately after the addition is adjusted to be 1.0 to 2.0 ppm, the concentration will be reduced to 0.2 ppm or less within several hours after the addition. Therefore, it is necessary to add electrolytic water twice or more (preferably about three times) a day. However, when electrolyzed water is added so that the residual chlorine concentration is always 0.2 ppm or more, the residual chlorine concentration in the bath water during the bathing time may be close to 1.0 ppm due to a difference in water quality or a difference in bathing load. Yes. At a residual chlorine concentration of 1.0 ppm, bathers easily feel a chlorine odor, and bathers who do not like the chlorine odor may feel uncomfortable, or some bathers may feel a tingling sensation on the skin . Because it is sterilized with electrolyzed water, there is no hygienic problem, but considering bathers who do not like smell or irritation, the time period when the bathing time period is set by the control means is underwater. It is preferable to remove the residual chlorine concentration. Therefore, the following operation is programmed to reduce the residual chlorine concentration of the water in the bathtub 18 before the set bathing time period. That is, before the start of the bathing time, the valves 25 and 26 are switched, and the water sent to the circulation flow path 19 by the pump 21 passes through the chlorine compound removing means 27, passes through the valve 25, and returns to the bathtub 18 from the adapter 20. Return to the configuration. The detailed structure of the chlorine compound removing means 27 is as shown in FIG.
A certain amount (2 mg / L or more and 20 mg / L or less) of ascorbic acid in the tank 41 is injected into the circulation flow channel 19 by the action of (1). By this operation, the residual chlorine concentration of the water in the bathtub 18 can be reduced to 0.2 ppm or less (in some cases, 0.1 ppm or less) to reduce or eliminate chlorine odor and tingling skin irritation during bathing. Can be.

The water immediately after the hot water has chlorine odor and skin irritation due to residual chlorine contained in tap water. Therefore, the operation of the valves 25 and 26 and the pumps 21 and 42 is controlled during and immediately after the hot water is added, and ascorbic acid is added to the water in the bathtub 18 to reduce chlorine odor and tingling immediately after the hot water. The reduced skin irritation can be reduced or eliminated.

In this embodiment, since the diaphragm 40 is arranged between the electrodes 32 and 33 and the valve 24 is installed upstream of the electrode 33, the pH (hydrogen ion concentration) of the water in the bathtub 18 is lowered. To produce acidic water. That is, the control means 38 switches the valve 24 to form a water circuit in which the water fed by the pump 21 passes through the valve 24 and the flow path 30 and returns from the electrolytic means 23 to the bathtub 18 via the circulation flow path 19. Then, while circulating water, electrolysis is performed using the electrode 33 as an anode. Since the pH is lowered on the anode side by the electrolysis and acidic water is obtained, the pH of the water in the bathtub 18 is lowered, and the bath can be bathed with acidic water. On the other hand, since alkaline water having a high pH is produced on the cathode 32 side, organic dirt deposited on the filter 22 can be decomposed, so that the life of the filter 22 can be extended. After the electrolysis is completed, the valves 24, 25, and 26 are switched, the pump 21 is started, the alkaline water accumulated in the space 39 on the downstream side of the filter 22 and the bypass passage 31 is discharged from the drainage passage 28, and the valve 2 is turned on again.
Switch between 4, 25 and 26 and return to normal filtration operation.

When the backwash of the filter 22 is performed using the alkaline water obtained by this operation,
Can be further extended.

Since the acidic water obtained by the electrolysis contains residual chlorine, after electrolysis, the valves 24, 25, and 26 are switched, and the water is passed again through the chlorine compound removing means 27, so that the ascorbic acid is removed. By removing the residual chlorine in the water, the astringent effect by the acidic water and the residual chlorine removing effect by the ascorbic acid make it possible to take a comfortable and beauty bath.

By adding ascorbic acid as a reducing agent to bath water by means of a chlorine compound removing means, hypochlorous acid can be reduced (or decomposed) and at the same time ascorbic acid is damaged by sunlight (ultraviolet rays). Since it can reduce oxidized lipids formed on the skin surface, it has a unique effect that it is good for beauty. Ascorbic acid is a substance contained in natural plants (fruits, vegetables, etc.) and is extremely safe. Similarly, substances having a reducing action with vitamins (for example, vitamins A, B, D,
E) or a plant extract (eg, a tea extract such as catechin extract or chlorophyll) can be used in place of ascorbic acid to obtain the same effect. In addition, other than natural substances, calcium sulfite, sodium thiosulfate and the like may be used. When these are used, as shown in FIG. 2B, calcium sulfite or sodium thiosulfate is formed into granules 45, which are filled in a casing 47 having a flow-off preventing body 46, and
And flowing water as shown by the arrow, the water comes into contact with the granular material 45 in the casing, and residual chlorine can be removed.

When it is desired to use vitamins such as ascorbic acid and substances such as calcium sulfite and sodium thiosulfate in powder form, as shown in FIG. A powdered medicine 50 is put in a medicine container 49 to which a nonwoven fabric 48 is attached, and this is housed in a casing 51. The circulated water passes through the chlorine compound removing means as shown by the arrow. That is,
Part of the circulating water passes through the nonwoven fabric and contacts (dissolves depending on the substance) a part of the powder chemical 50, thereby enabling the residual chlorine in the water to be removed. In this method, the contact with the medicine or the dissolution condition can be easily changed by arbitrarily changing the material of the nonwoven fabric 48, the opening diameter, the area of the nonwoven fabric 48, and the gap (distance) between the casing 51 and the medicine storage section 50. Can be.
When the nonwoven fabric is used only in one direction, the check valve can be installed upstream or downstream to prevent leakage of the powdered chemical 49.

In this embodiment, the electrodes 32, 33
The diaphragm 40 is disposed between the electrodes, and the electrolytic water is produced by electrolysis, and at the same time, the acidic water can be produced. However, the diaphragm 40 is not necessary except when it is desired to supply the acidic water to the bath 18. The flow paths 29, 30 and the valve 24 for producing acidic water can be omitted.

(Embodiment 2) FIGS. 3A and 3B are configuration diagrams showing a chlorine compound removing means of a water purification apparatus according to Embodiment 2 of the present invention.

The second embodiment is different from the first embodiment in that a residual chlorine is decomposed and removed by a catalyst. A granular material 53 containing a catalyst 52 is filled in a casing 54, and an outflow preventing member 55 is used. Held in the casing 54,
Alternatively, a honeycomb carrier 56 carrying the catalyst 52 is incorporated.

The components having the same reference numerals as those of the first embodiment have the same structure, and the description is omitted.

Next, the operation and action will be described. When removing residual chlorine in water in the bathtub 18, the valves 25 and 26 are switched and the pump 21 is operated in the same manner as in the first embodiment, so that the water is removed by the chlorine compound removing means. A water circuit is formed to enter the bath 27 and return to the bath 18 again. In the configuration shown in FIG. 3A, the water that has entered the chlorine compound removing means 27 comes into contact with the catalyst 52 of the granular material 53, so that dissolved residual chlorine is decomposed and removed. Also,
By supporting the catalyst 52 on the surfaces (both sides) of the honeycomb carrier 56 as shown in FIG. 3B, the pressure loss of the chlorine compound removing means 27 can be reduced while maintaining the effect.

The catalyst 52 is desirably a metal-based catalyst such as Au, Ag, Pd, Pt, Fe, Mn, W, T
i, Mo system is desirable.

(Embodiment 3) FIGS. 4A and 4B are block diagrams showing a chlorine compound removing means 27 according to Embodiment 3 of the present invention. The third embodiment is different from the first or second embodiment in that a granular activated carbon 58 and an outflow prevention plate 59 as an adsorbing unit or a fibrous activated carbon 60 as an adsorbing unit are provided in a casing 57.

The components having the same reference numerals as in the first embodiment have the same structure, and the description is omitted.

Next, the operation and the operation will be described. When the residual chlorine in the water in the bathtub 18 is removed, as in the first embodiment,
By switching the valves 25 and 26, a water circuit passing through the chlorine compound removing means 27 is formed. After that, the pump 21 is started,
Water is passed through the chlorine compound removing means 27. In FIG. 4A, the water that has entered the chlorine compound removing means 27 comes into contact with the granular activated carbon 58, and the dissolved residual chlorine is adsorbed and removed. The residual chlorine concentration in the inside can be reduced. Further, as shown in FIG.
By mounting 0, the pressure loss increases, but the residual chlorine removal rate improves.

The use of granular activated carbon 58 or fibrous activated carbon 60 as an adsorbent makes it possible to remove not only residual chlorine in water but also organic substances that emit odors mixed in during bathing. However, it has a unique effect that a comfortable bath with little odor can be realized.

In this embodiment, the granular activated carbon 58 or the fibrous activated carbon 60 is used as the adsorbing means. However, the same effect can be obtained by using a granular or membrane ion exchange resin.

(Embodiment 4) FIG. 5 is a block diagram of a chlorine compound removing means 27 according to Embodiment 4 of the present invention. The fourth embodiment is different from the first, second or third embodiment in that
9 is provided with an ultrasonic transmitting element 61 as ultrasonic generating means.

The components having the same reference numerals as in the first embodiment have the same structure, and a description thereof will be omitted.

Next, the operation and the operation will be described. When the residual chlorine in the water in the bathtub 18 is removed, as in the first embodiment,
By switching the valves 25 and 26, a water circuit passing through the chlorine compound removing means 27 is formed. After that, the pump 21 is started,
Water is passed through the chlorine compound removing means 27. Thereafter, the operation of the ultrasonic wave transmitting element 61 is controlled by the control means 38, and the circulating water is irradiated with ultrasonic waves. Since the residual chlorine in the water is decomposed by the ultrasonic wave, the residual chlorine concentration of the water in the bathtub 18 can be reduced by continuing the circulation of the water by the pump 21.

Since the ultrasonic transmitting element 61 is used as the chlorine compound removing means 27 as in this embodiment, the residual chlorine is not decomposed except when the ultrasonic transmitting element 61 is energized. Since it is possible to connect in series with the apparatus, there are also effects that the apparatus can be simplified and the number of valves for switching the flow path can be reduced.

(Embodiment 5) FIG. 6 shows a configuration diagram of the chlorine compound removing means 27 of Embodiment 5 of the present invention. The difference from the first to fourth embodiments is that an ultraviolet lamp as an ultraviolet irradiation means is provided in the casing 62 as the chlorine compound removing means 27. Arrows indicate the flow of water.

The components having the same reference numerals as in the first embodiment have the same structure, and a description thereof will be omitted.

Next, the operation and the operation will be described. When the residual chlorine in the water in the bathtub 18 is removed, the same operation as in the first embodiment is performed.
By switching the valves 25 and 26, a water circuit passing through the chlorine compound removing means 27 is formed. After that, the pump 21 is started,
Water is passed through the chlorine compound removing means 27. Thereafter, the control unit 38 supplies electricity to the ultraviolet lamp 63, and the casing 62
The water inside is irradiated with ultraviolet rays. By this operation, the residual chlorine in the water is photochemically decomposed, and powder t that reduces the residual chlorine concentration in the bathtub 18 is produced by continuing the circulation of the water by the pump 21.

In this embodiment, the ultraviolet lamp 62 of the ultraviolet irradiation means is used to irradiate the water with the ultraviolet lamp 62 as the chlorine compound removing means. Since the bacterium can be sterilized, it has a specific effect that residual chlorine in water can be removed while maintaining the bactericidal performance.

[0061]

As described above, the water purifying apparatus according to the first aspect of the present invention comprises an electrolytic means capable of generating electrolyzed water by electrolysis and a chlorine compound removing means capable of removing chlorine compounds in water. Since the concentration of the chlorine compound in the water is reduced for a certain period of time by the control of the control means during the sterilization, electrolyzed water having a sterilizing effect can always be maintained at a concentration equal to or higher than a certain level in bath water other than bathing. Because it can always damage microorganisms such as bacteria in water with acidic substances, maximum sterilization (or growth suppression) with a small amount of electrolyzed water
There is an effect that an effect can be obtained.

Further, the water purifying apparatus according to claim 3 is characterized in that the electrolytic means and the chlorine compound removing means are installed in parallel, so that when the electrolytic water is injected into the bathtub, the electrolytic water is converted into the chlorine compound. Electrolyzed water can be used effectively without passing through the removing means.

Further, the water purifying apparatus according to the fourth aspect controls the removal of the chlorine compound in the water by the chlorine compound removing means at any point after the water injection into the bathtub or after the water injection. It is also possible to remove chlorine compounds in tap water existing in tap water (including pouring water), so that comfortable bathing can be performed immediately after pouring.

Further, since the water purifying apparatus according to the fifth aspect stores the reducing agent and is configured to be able to come into contact with the electrolyzed water or the water to be treated, the chlorine compound can be inexpensively and effectively removed.

Further, the water purifying apparatus according to claim 6 uses a catalyst capable of decomposing the chlorine compound in the electrolytic water, so that the performance of removing the chlorine compound can be maintained for a long time.
Stable chlorine compound removal performance can be obtained.

In the water purifying apparatus according to the present invention, the chlorine compound removing means is an adsorbent capable of adsorbing the chlorine compound in the electrolytic water. At the same time, organic substances in water can be removed, so that the odor derived from these substances can be reduced.

Further, in the water purifying apparatus according to the present invention, the chlorine compound removing means is an ultrasonic wave generating means capable of generating ultrasonic waves, and is characterized by decomposing chlorine compounds by ultrasonic waves. Not only can the structure of the compound removing means be simplified, but also the cluster of water can be reduced, so that bathing with water that is gentle on the skin becomes possible.

Further, in the water purifying apparatus according to the ninth aspect, since the chlorine compound is decomposed by the ultraviolet ray, the chlorine compound can be decomposed by the ultraviolet ray and the bacteria in the water can be sterilized by the ultraviolet ray, so that the effective sterilization can be performed. .

[Brief description of the drawings]

FIG. 1 is a configuration diagram of a water purification device according to a first embodiment of the present invention.

FIGS. 2A, 2B, and 2C are configuration diagrams of a chlorine compound removing unit of the water purification apparatus.

FIGS. 3A and 3B are configuration diagrams of a chlorine compound removing unit in Embodiment 2 of the present invention.

FIGS. 4A and 4B are configuration diagrams of a chlorine compound removing unit in Embodiment 3 of the present invention.

FIG. 5 is a configuration diagram of a chlorine compound removing unit according to a fourth embodiment of the present invention.

FIG. 6 is a configuration diagram of a chlorine compound removing unit according to a fifth embodiment of the present invention.

FIG. 7 is a configuration diagram of a conventional water purification device.

[Explanation of symbols]

 Reference Signs List 18 bathtub 19 circulation channel 21 pump 23 electrolytic means 24, 25, 26 valve 27 chlorine compound removing means 30 flow path 32, 33 electrode 38 control means 44 ascorbic acid aqueous solution 45 granular material 50 chemical powder 52 catalyst 58 granular activated carbon 60 fibrous Activated carbon 61 Ultrasonic transmitter 63 Ultraviolet lamp

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) C02F 1/50 520 C02F 1/50 520L 531 531M 1/70 1/70 Z (72) Inventor Tomohide Matsumoto Osaka 1006 Omon Kadoma, Fumonma-shi Matsushita Electric Industrial Co., Ltd.F-term (reference) CA06 CA07 CA10 CA15 4D061 DA03 DA07 DB01 DB10 EA03 EB39 ED13 FA06 FA07 FA13 FA17 FA20 GC01 GC02 GC12 GC18

Claims (9)

[Claims] 1. A bath water circulation means in a circulation flow path, an electrolysis means having at least a pair of electrodes therein and capable of producing electrolyzed water containing a chlorine compound by electrolysis, and a water chlorine compound being removable. And a sterilizing / purifying water in the bathtub by continuously adding the electrolyzed water to the water, wherein the controlling means includes a circulating means, an electrolytic means, and a chlorine compound removing means. A water purification device for controlling at least one operation to reduce the concentration of chlorine compounds in water for a certain period of time during sterilization. 2. The water purifying apparatus according to claim 1, further comprising a flow path switching means capable of controlling inflow and outflow of water to and from the chlorine supply means. 3. The water purifying apparatus according to claim 2, wherein said electrolytic means and said chlorine compound removing means are arranged in parallel. 4. The control means for controlling the removal of chlorine compounds in water by the chlorine compound removing means at any time after or after injection into the bathtub.
The water purification device according to any one of claims 1 to 4. 5. The water purifying apparatus according to claim 2, wherein the chlorine compound removing means stores a reducing agent therein and is configured to be able to contact the electrolyzed water or the water to be treated. 6. The chlorine compound removing means is a catalyst capable of decomposing a chlorine compound in electrolytic water.
The water purification device according to any one of claims 4 to 4. 7. The water purification apparatus according to claim 2, wherein the chlorine compound removing means is an adsorbent capable of adsorbing a chlorine compound in the electrolytic water. 8. The water purification apparatus according to claim 1, wherein the chlorine compound removing means is an ultrasonic wave generating means capable of generating ultrasonic waves, and decomposes the chlorine compound by ultrasonic waves. 9. The water purification apparatus according to claim 1, wherein the chlorine compound removing means is an ultraviolet ray irradiating means for irradiating ultraviolet rays, and decomposes the chlorine compound by the ultraviolet rays.