JP2000334458A - Device for changing water quality of bathtub water - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a device for changing water quality of bathtub water by which an electric power cost can be saved by enhancing electric conductivity of the bathtub water to be subjected to electrolysis. SOLUTION: This device is provided with an electrolytic bath 2 having a membrane 45. A salt water feeding tank 4 for feeding NaCl into one electrolytic room separated with the membrane 45 in the electrolytic bath 2 having the membrane is contained in the device. The device is also provided with a flow path of the bathtub water 31 to be subjected to the electrolysis and fed from the bathtub 1 to the electrolytic bath 2 having the membrane, and either one of alkaline ionized water and acidic ionized water which are generated with the electrolysis at the electrolytic bath 2 having the membrane is fed to the bathtub 1 and also another ionized water is discharged outside the bathtub 1. A circulation pump 5 for generating a water stream is provided in the flow path of the bathtub water 31.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bathtub water quality modifying device for adjusting the pH of bathtub water.

[0002]

2. Description of the Related Art Hot water in a bathtub is electrolyzed and circulated,
Various devices have been proposed as devices for enjoying the effect of sterilizing hot water having acidic ionized water, the astringent effect, or the treatment effect of alkaline ionized water. There are things that are. The apparatus disclosed in this publication includes a heat retaining means for heating and retaining hot water in a bathtub, and an electrolytic means for electrolyzing water to generate acidic ionized water and alkaline ionized water. Water and alkaline ionized water could be appropriately refluxed in the bathtub.

[0003]

However, such a conventional technique has the following problems. (1) Since bathtub water with low electric conductivity is electrolyzed, a high voltage must be applied between the electrodes in order to flow the current necessary for electrolysis, and the power cost is high. . (2) Since the ionized water that is not fed into the bathtub is continuously discharged out of the bathtub, the amount of drainage increases, and the bathtub water decreases sharply. (3) While the alkaline ionized water is being supplied to the bathtub, the alkaline ionized water does not contain chlorine, so that the hot water in the bathtub cannot be sterilized, and there is a hygiene problem. (4) When draining the acidic ionized water, there is a problem that harmful and odorous chlorine gas in the acidic ionized water is vaporized and released into the atmosphere.

[0004] The present invention has been made in view of the above points, and has as its object to provide a bathtub water quality modifying apparatus which can solve the above-mentioned problems.

[0005]

According to the first aspect of the present invention, there is provided an apparatus for modifying water quality of bath water, comprising: an electrolytic cell separated from a diaphragm electrolytic cell 2 and a diaphragm 45 in the electrolytic cell 2; A salt water supply tank 4 for supplying sodium chloride to the tank, and a bath water 31 to be subjected to electrolysis are supplied from the bath 1 to the diaphragm electrolysis tank 2, and alkaline ionized water generated by electrolysis in the diaphragm electrolysis tank 2. A bath water channel for supplying one of the acidic ion water to the bath 1 and discharging the other ion water out of the bath 1 and a circulation pump 5 for generating a water flow in the bath water flow. It is characterized by comprising.

According to a second aspect of the present invention, there is provided an apparatus for modifying water quality of bathtub water, wherein
During the electrolysis in the above, one of the alkaline ionic water and the acidic ionic water generated by the electrolysis in the diaphragm electrolyzer 2 is continuously supplied to the bath 1, and the electricity in the diaphragm electrolyzer 2 is supplied. It is characterized by comprising a bathtub water flow path for discharging the other ion water out of the bathtub 1 after the decomposition is completed.

Further, according to a third aspect of the present invention, there is provided an apparatus for modifying water quality of bathtub water, wherein sodium chloride is supplied to both the electrolytic chamber 2 and both electrolytic chambers separated by the diaphragm 45 in the electrolytic bath 2. The salt water supply tank 4 and the bath water 31 to be subjected to the electrolysis are supplied from the bath 1 to the diaphragm electrolysis tank 2, and after the electrolysis in the diaphragm electrolysis tank 2 is completed, the electrolysis is performed in the diaphragm electrolysis tank 2. One of the generated alkaline ionized water and the acidic ionized water is supplied to the bathtub 1 and the other ionized water is discharged out of the bathtub 1, and a water flow is generated in the bathtub water flow path. And a circulating pump 5 for performing the operation.

According to a fourth aspect of the present invention, there is provided an apparatus for modifying water quality of bath water, in addition to the constitution of any one of the first to third aspects, wherein alkaline ionic water generated by electrolysis in the diaphragm electrolyzer 2 is used. An operation of supplying alkaline ionized water of the acidic ionized water to the bathtub 1 and discharging the acidic ionized water out of the bathtub 1 and an operation of supplying both the alkaline ionized water and the acidic ionized water generated by electrolysis to the bathtub 1. Are alternately performed once each, or one operation is performed a plurality of times, while the other operation is performed once.

[0009] Further, in addition to the apparatus for modifying water quality of bathtub water according to claim 5 of the present invention,
Membrane electrolysis provided with a first electrolysis chamber 2a having a platinum-iridium mixture electrode 3a whose surface is formed of a platinum-iridium mixture and a second electrolysis chamber 2b having a platinum electrode 3b whose surface is formed of platinum. A tank 2 and an alkaline ionized water generated in the diaphragm electrolyzer 2 when electrolysis is performed using the platinum-iridium mixture electrode 3a as a cathode and the platinum electrode 3b as an anode, and supplying the acidic ionized water to the bath 1. It is discharged out of the bathtub 1 and both the alkaline ionized water and the acidic ionized water generated in the diaphragm electrolyzer 2 when the electrolysis is performed using the platinum electrode 3b as the cathode and the platinum-iridium mixture electrode 3a as the anode are used as the bath. 1 is provided with a flow path of bathtub water to be supplied to 1.

According to a sixth aspect of the present invention, there is provided an apparatus for modifying water quality of bathtub water according to any one of the first to fifth aspects, further comprising a platinum-iridium mixture electrode whose surface is formed of a platinum-iridium mixture. A separated electrolytic cell 2 provided with a first electrolytic chamber 2a having a first electrolytic chamber 3a and a second electrolytic chamber 2b having a platinum electrode 3b having a surface formed of platinum, a platinum-iridium mixture electrode 3a serving as a cathode, a platinum electrode 3b Is supplied to the bathtub 1 while the alkaline ionized water generated in the electrolytic cell 2 when the electrolysis is performed is discharged to the bathtub 1 and the acidic ionized water is discharged out of the bathtub 1. The platinum electrode 3 b is used as a cathode, and platinum-iridium is used as a cathode. Bath tub water for discharging alkaline ionic water generated in the diaphragm electrolyzer 2 when electrolysis is performed using the mixture electrode 3a as an anode and supplying acidic ionic water to the bath tub 1 It is characterized in that formed by including the flow path.

A water quality modifying device according to a seventh aspect of the present invention, in addition to the configuration according to any one of the first to sixth aspects, further comprises an alkaline ionized water and an acidic ionized water generated in the diaphragm electrolyzer 2. It is characterized by comprising a bath water flow path for supplying one ionized water to the bathtub 1 and diluting the other ionized water with the bathtub water and then discharging the diluted water out of the bathtub 1.

According to an eighth aspect of the present invention, in addition to the constitution of any one of the first to seventh aspects, the apparatus for modifying water quality of bathtub water further comprises a filter tank 7 for purifying the bathtub water 31 and a filter tank 7 for filtering the bathtub water 31. A bath water 31 is supplied as washing water for the tank, and one of alkaline ionized water and acidic ionized water generated in the diaphragm electrolyzer 2 is supplied to the bath 1 and the other ionized water is filtered into the filter tank 7. And a bath water channel for discharging the bath water after diluting with the bath water 31 after washing.

According to a ninth aspect of the present invention, there is provided an apparatus for modifying water quality of bathtub water, which further comprises a filtration tank 7 for purifying the bathtub water 31 in addition to any one of the first to eighth aspects. It is a feature.

According to a tenth aspect of the present invention, in addition to the constitution of the ninth aspect, the filter tank 7 provided with a hollow fiber membrane as the filtration membrane 46, and the water for washing the filtration tank 7 is provided in the filtration tank 7. And a bath water channel for supplying the acidic ion water generated in the diaphragm electrolyzer 2.

[0015]

Embodiments of the present invention will be described below.

FIG. 1 shows an example of a bathtub water quality modifying apparatus according to the present invention. The bathtub water quality modifying device includes a circulating pump 5 for generating a water flow in a flow path of a bathtub water 31 to be described later to transfer the bathtub water in the flow path, a diaphragm electrolyzer 2 and sodium chloride therein. A salt water supply tank 4 is provided. Here, the diaphragm electrolyzer 2 is provided therein with a first electrode chamber 2a and a second electrode chamber 2b which are separated by a diaphragm 45, and the first electrode chamber 2a and the second electrode chamber 2b have insoluble electrode plates 3 respectively. Are arranged. The insoluble electrode plate 3 provided in the first electrode chamber 2a is a platinum-iridium mixed electrode 3a in which a base material is titanium and a surface electrolytic surface is formed of a platinum-iridium mixture. The insoluble electrode plate 3 disposed in the second electrode chamber 2b is a platinum electrode 3b having a base material made of titanium and a surface electrolytic surface made of platinum. The salt water supply tank 4 has a double cylindrical structure, and has an inner cylinder 4 as an inner cylinder.
a is designed to store sodium chloride. The inner cylinder 4a has an upper surface opened and side surfaces opened in a lattice, and this opening is covered with a mesh. On the other hand, the outer cylinder 4b, which is the outer cylinder, is provided with a lid 4c,
By opening the lid 4c, the inner cylinder 4a is housed inside,
Alternatively, it can be detached. Among the flow paths connected to the salt water supply tank 4, the flow path for supplying the bath water 31 and the like to the salt water supply tank 4 is provided inside the outer cylinder 4 b with an inflow port 4 provided below the outer cylinder 4 b.
When the bathtub water 31 and the like are supplied from the flow path into the outer cylinder 4b, the sodium chloride in the inner cylinder 4a is dissolved in the bathtub water 31 and the like to generate salt water. A flow path for discharging the salt water generated in the salt water supply tank 4 is connected to the outer cylinder 4b through an outlet 4e provided at an upper portion of the outer cylinder 4b.

Further, a flow path through which the bathtub water 31 passes and an on-off valve such as a solenoid valve for opening and closing the flow of these flow paths are provided. The bathtub water 31 here is a bathtub water 3
1 includes salt water obtained by dissolving sodium chloride, and acidic ion water or alkaline ion water obtained by electrolyzing this salt water or bath water 31.

Of the flow paths through which bath water 31 passes, inflow path 11
The upstream side is disposed in the bathtub water 31 in the bathtub 1, the upstream end thereof is opened as an inflow port 43, and the downstream side is connected to the circulation pump 5. The upstream side of the electrolysis introduction path 12 is connected to the circulation pump 5, and the downstream side is branched into a salt water tank path 13 and an electrolysis tank path 30. The downstream side of the salt water tank path 13 is connected to the inlet 4 d of the salt water supply tank 4. The downstream side of the electrolytic cell path 30 is branched into a first electrode chamber path 14 and a second electrode chamber path 15, and the downstream side of the first electrode chamber path 14 is connected to the first electrode chamber 2 a of the diaphragm electrolyzer 2. The downstream side of the electrode chamber path 15 is connected to the second electrode chamber 2 b of the diaphragm electrolyzer 2. The upstream side of the first electrode chamber lead-out channel 22 is connected to the first electrode chamber 2 a of the diaphragm electrolyzer 2, and the downstream side is connected to the upstream side of the outflow channel 16. The bathtub 1 is located downstream of the outflow channel 16.
Is connected to the bathtub water 31 inside, and the downstream end is an outlet 44.
It is opened as. Further, the upstream side of the salt supply path 17 is connected to the outlet 4 e of the salt water supply tank 4, and the downstream side is connected to the middle of the second electrode chamber path 15 so as to join the second electrode chamber path 15. I have. The upstream side of the second electrode chamber outlet path 21 is connected to the second electrode chamber 2 b of the diaphragm electrolyzer 2, and the downstream side is connected to the upstream side of the drainage introduction path 19. The downstream side of the drainage introduction channel 19 is connected to the upstream side of the drainage channel 18. The upstream side of the bathtub water bypass 20 is an electrolysis introduction channel 1.
In the middle of the second pipe, it is connected so as to branch off from the electrolysis introduction path 12, and the downstream side is connected to the upstream side of the drainage path 18. The downstream side of the drainage channel 18 is led out of the bathtub 1.

Among the on-off valves, the first valve 32 is connected to the salt water tank passage 13, the second valve 33 is connected to the second electrode chamber passage 15 upstream of the connection position of the salt supply passage 17, and the third valve 34 is connected to the salt water supply passage 17. In the drainage introduction path 19, the fourth valve 35 is provided in the bathtub water bypass path 20, respectively, and opens and closes the flow of each flow path at the position where the on-off valve is disposed.

Here, the configuration of the salt water supply tank 4 is not limited to the above-described one. For example, the salt water supply tank 4 is provided as a tank for storing salt water. The second electrode chamber 2b may be connected, and the salt water in the salt water supply tank 4 may be supplied to the second electrode chamber 2b by a pump different from the circulation pump 5 described above. Also, the method of installing the on-off valve is not limited to the above, and for example, a three-way valve can be used.

The operation of the bath water quality modifying device is shown in FIGS.
4 will be described. Here, the open / closed valves shown in white in these drawings indicate open valves, the open / closed valves shown in black represent closed valves, and the arrows in the flow passages indicate the respective valves. The direction of the flow of the bathtub water 31 in the road is shown.

When the water quality of the bathtub water 31 is changed to alkaline, first, as shown in FIG. 2, a first valve 32, a second valve 33,
The third valve 34 and the fourth valve 35 are closed, and the circulating pump 5 operates in this state. At this time, the bath pump water 31 is circulated by the operation of the circulation pump 5 so that the bath water 31 flows through the circulation flow path composed of the inflow path 11, the electrolysis introduction path 12, the electrolysis tank path 30, the first electrode chamber path 14, the first electrode chamber outlet path 22, and the outflow path 16. Bath water 31 is circulated and the bath water 31 is supplied to the first electrode chamber 2a of the diaphragm electrolyzer 2, and excess bath water 31 in the first electrode chamber 2 a is discharged from the first electrode chamber lead-out channel 22 and the outflow channel 16. Is returned to the bathtub 1 via.

Next, as shown in FIG.
The valve 34 is in the open state, the second valve 33 and the fourth valve 35 are in the closed state, and the circulating pump 5 is continuously operated in this state. At this time, in addition to the water flow in the circulation flow path shown in FIG. 2, the water is introduced from the electrolysis introduction path 12 through the salt water tank path 13 into the salt water supply tank 4, and from the salt water supply tank 4 through the salt supply path 17, the diaphragm. A water flow is introduced into the second electrode chamber 2b of the electrolytic cell 2 and discharged from the second electrode chamber 2b to the outside of the bathtub 1 from the drainage channel 18 via the second electrode chamber lead-out channel 21 and the drainage channel 19. You. At this time, the sodium chloride in the salt water supply tank 4 is
3 dissolves in the bath water 31 supplied to the salt water supply tank 4 to generate salt water, and the salt water is supplied to the second electrode chamber 2b through the salt supply path 17 and excess salt water in the second electrode chamber 2b. The salt water is discharged out of the bathtub 1 through the second electrode chamber lead-out passage 21, the drain introduction passage 19, and the drain passage 18.

Next, the first valve 32, the second valve 33, the third valve 3
4. The fourth valve 35 is closed and returns to the state shown in FIG. 2, and in this state, the platinum-iridium mixed electrode 3
A voltage is applied between these electrodes so that a becomes a cathode and the platinum electrode 3b becomes an anode. In the diaphragm electrolyzer 2, alkaline ionized water is supplied to the first electrode chamber 2a by electrolysis and acidic water is supplied to the second electrode chamber 2b. Ionized water is generated. At this time, since sodium chloride is added to the bath water 31 which is electrolyzed in the diaphragm electrolyzer 2, the conductivity of the bath water 31 is improved, and the electric power required for the electrolysis is reduced. In addition, the concentration of chloride ions and sodium ions in the bath water 31 in the diaphragm electrolyzer 2 is improved, so that alkaline ionic water having a high sodium hydroxide concentration is generated on the cathode side by electrolysis, and It generates acidic ion water with high hydrochloric acid concentration on the side. Here, bathtub water is continuously supplied to the first electrode chamber 2a, and excess bathtub water is returned to the bathtub 1.
The bathtub water that has become the alkaline ionized water at a is continuously supplied into the bathtub 1. On the other hand, the second electrode chamber 2b
Inside, acidic ionized water is retained. Since the platinum electrode 3b provided in the second electrode chamber 2b has a high oxygen generation efficiency, the generation of chlorine in the acidic ionic water is suppressed.

Next, after the electrolysis is completed, as shown in FIG. 4, the second valve 33, the third valve 34, and the fourth valve 35 are opened, and the first valve 32 is closed. The pump 5 operates. At this time, in addition to the water flow in the circulation channel,
The bath is introduced from the electrolytic cell passage 30 to the second electrode chamber 2b through the second electrode chamber passage 15, and further from the second electrode chamber 2b to the second electrode chamber outlet passage 21, the drain introduction passage 19, and the drain passage 18. 1
A water flow that is discharged to the outside and a water flow that branches off from the electrolysis introduction path 12 and passes through the bathtub water bypass path 20 to join the drainage path 18 are formed. At this time, the acidic ionized water in the second electrode chamber 2b is pushed out into the bath water 31 introduced into the second electrode chamber 2b via the second electrode chamber path 15, and the second electrode chamber outlet path 21, The water is discharged out of the bathtub 1 through the drainage introduction channel 19 and the drainage channel 18. At this time, since the bath water 31 whose alkaline water quality has been modified is supplied to the drain 18 via the bath water bypass 20, the acidic ion water is neutralized and diluted by the bath water 31. It is discharged in a state. The chlorine concentration in this wastewater is kept low,
The generation of harmful and odorous chlorine gas is suppressed, and the discharged acidic ionized water is once held in the second electrode chamber 2b, and then the bath water 31 necessary for neutralization and dilution is removed. The water can be mixed and discharged, the amount of drainage from the device is suppressed, and the decrease in bath water 31 is suppressed.

Next, the circulation pump is stopped when the water quality of the bathtub water 31 is changed to alkaline. When the water quality of the bathtub water 31 is changed to be more alkaline, the above operation is repeatedly performed.

When the bath tub water 31 is modified to have an acidic water quality, the switching of the flow path is similar to the case where the water quality is modified to be alkaline, but the direction of application of the voltage in the diaphragm electrolyzer 2 is reversed. That is, first, as shown in FIG.
The valve 32, the second valve 33, the third valve 34, and the fourth valve 35 are closed, and the circulation pump 5 operates in this state. At this time, the bath pump water 31 is circulated by the operation of the circulation pump 5 so that the bath water 31 flows through the circulation flow path composed of the inflow path 11, the electrolysis introduction path 12, the electrolysis tank path 30, the first electrode chamber path 14, the first electrode chamber outlet path 22, and the outflow path 16. Circulates, and accordingly, the first electrode chamber 2a of the diaphragm electrolyzer 2
The bathtub water 31 is supplied to the first electrode chamber 2a, and the excess bathtub water 31 in the first electrode chamber 2a is returned to the bathtub 1 via the first electrode chamber lead-out passage 22 and the outflow passage 16.

Next, as shown in FIG.
The valve 34 is in the open state, the second valve 33 and the fourth valve 35 are in the closed state, and the circulating pump 5 is continuously operated in this state. At this time, in addition to the water flow in the circulation flow path shown in FIG. 2, the water is introduced from the electrolysis introduction path 12 through the salt water tank path 13 into the salt water supply tank 4, and from the salt water supply tank 4 through the salt supply path 17, the diaphragm. A water flow is introduced into the second electrode chamber 2b of the electrolytic cell 2 and discharged from the second electrode chamber 2b to the outside of the bathtub 1 from the drainage channel 18 via the second electrode chamber lead-out channel 21 and the drainage channel 19. You. At this time, the sodium chloride in the salt water supply tank 4 is
3 dissolves in the bath water 31 supplied to the salt water supply tank 4 to generate salt water, and the salt water is supplied to the second electrode chamber 2b through the salt supply path 17 and excess salt water in the second electrode chamber 2b. The salt water is discharged out of the bathtub 1 through the second electrode chamber lead-out passage 21, the drain introduction passage 19, and the drain passage 18.

Next, the first valve 32, the second valve 33, the third valve 3
4. The fourth valve 35 is closed and returns to the state shown in FIG. 2, and in this state, the platinum-iridium mixed electrode 3
a is an anode and a platinum electrode 3b is a cathode. A voltage is applied between these electrodes, and in the diaphragm electrolyzer 2, acid ion water is supplied to the first electrode chamber 2a by electrolysis, and the second electrode chamber 2
The alkaline ionized water is generated in b. At this time, bathtub water is continuously supplied to the first electrode chamber 2a, and excess bathtub water 31 is returned to the bathtub 1. Therefore, bathtub water that has become acidic ionized water in the first electrode chamber 2a. 31 will be continuously supplied into the bathtub 1. On the other hand, the second electrode chamber 2b
Inside, alkaline ionized water is held. Here, a platinum-iridium mixed electrode 3a provided in the first electrode chamber 2a
Since chlorine has a high chlorine generation efficiency, chlorine is generated efficiently in the acidic ionic water, and acidic ionic water having a high sterilizing effect is generated.

Next, after the electrolysis is completed, as shown in FIG. 4, the second valve 33, the third valve 34, and the fourth valve 35 are opened, and the first valve 32 is closed. The pump 5 operates. At this time, in addition to the water flow in the circulation channel,
The bath is introduced from the electrolytic cell passage 30 to the second electrode chamber 2b through the second electrode chamber passage 15, and further from the second electrode chamber 2b to the second electrode chamber outlet passage 21, the drain introduction passage 19, and the drain passage 18. 1
A water flow that is discharged to the outside and a water flow that branches off from the electrolysis introduction path 12 and passes through the bathtub water bypass path 20 to join the drainage path 18 are formed. At this time, the alkaline ionized water in the second electrode chamber 2b is pushed out to the bath water 31 introduced into the second electrode chamber 2b via the second electrode chamber path 15, and the second electrode chamber outlet path 21, The water is discharged out of the bathtub 1 through the drainage introduction channel 19 and the drainage channel 18. At this time, the bath water 31 whose acidic quality has been modified is supplied to the drain 18 through the bath water bypass 20, so that the alkaline ionized water is neutralized to some extent by the bath water 31 and diluted. It is discharged in the state where it was done. The alkaline ionized water discharged here is, once held in the second electrode chamber 2b, neutralized and diluted by a necessary amount and then discharged. The amount of drainage from the bathtub 1 is suppressed, The decrease of the water 31 is suppressed.

Next, when stopping the change of the bathtub water 31 to an acidic water quality, the circulation pump is stopped. In addition, bathtub water 31
When the water quality is further modified to be more acidic, the above operation is repeated.

FIG. 5 shows another example of the bathtub water quality modifying apparatus according to the present invention. This bath water quality modifying device includes a circulation pump 5, a diaphragm electrolyzer 2 and a salt water supply tank 4 similar to those shown in FIG.
Are provided, and a heater 6 and a filtration tank 7 are provided. The tub water 31 passing through the inside of the filtration tank 7 is provided in the filtration tank 7.
A filtration membrane 46 made of a hollow fiber membrane for filtering water is provided. The filtration membrane 46 is arranged so as to partition the inside of the filtration tank 7 into an upstream side and a downstream side of the water flow. In the filtration tank 7,
A nozzle 9 having a plurality of water outlets 10 is provided upstream of the filtration membrane 46. The nozzle 9 is configured to rotate the outer periphery on the upstream side of the filtration membrane 46 by the action of the motor 8, and simultaneously with this rotation, discharges a water flow from the water discharge port 10 to the surface on the upstream side of the filtration membrane 46, and 46 can be cleaned on the upstream side. Among the flow paths connected to the filtration tank 7, a flow path for supplying the bath water 31 and the like into the filtration tank 7 is a flow for leading the filtered bath water 31 and the like in the filtration tank 7 to the nozzle 9. The passage is provided with a filtration membrane 46 at a filtered water discharge port 7a provided at the upper portion on the downstream side of the filtration tank 7.
The flow paths for leading the water used for washing out of the filtration tank 7 out of the filtration tank 7 are connected at washing water discharge ports 7b provided at the lower portion on the upstream side of the filtration tank 7, respectively.

Further, there are provided a flow path through which the bathtub water flows, and an on-off valve such as an electromagnetic valve for opening and closing the flow of these flow paths. The bath water 31 referred to here includes salt water obtained by dissolving sodium chloride in the bath water 31, and acidic ion water and alkaline ion water obtained by electrolyzing the salt water and the bath water 31.

Of the bathtub water flow path, the downstream side of the flow path inflow path 11 is disposed in the bathtub water 31 in the bathtub 1, the downstream end thereof is open as an inlet 43, and the upstream side is upstream. It is connected to the circulation pump 5. The upstream of the electrolysis introduction path 12 is connected to the circulation pump 5, and the downstream of the electrolysis introduction path 12 is a salt water tank path 13.
And an electrolytic cell path 30. The downstream side of the salt water tank path 13 is connected to the inlet 4 d of the salt water supply tank 4. The first electrode chamber path 14 and the second electrode chamber path 15 are located downstream of the electrolytic cell path 30.
The downstream side of the first electrode chamber path 14 is connected to the first electrode chamber 2a of the diaphragm electrolyzer 2, and the downstream side of the second electrode chamber path 15 is connected to the second electrode chamber 2b of the diaphragm electrolyzer 2. It is connected. The upstream side of the first electrode chamber lead-out channel 22 is connected to the first electrode chamber 2a of the diaphragm electrolyzer 2, the downstream side is connected to the upstream side of the ion water channel 26, and the downstream side of the ion water channel 26 is the outflow channel 1.
6 upstream. The downstream side of the outflow channel 16 is connected to bath water 31 in the bathtub 1, and the downstream end is opened as an outlet 44. The heater 6 is disposed in the outflow passage 16, and when the heater 6 is operating, the water flow passing through the outflow passage 16 is heated by the heater 6. Further, the upstream side of the salt supply path 17 is connected to the outlet 4 e of the salt water supply tank 4, and the downstream side is connected to the middle of the flow path of the electrolytic tank path 30 so as to merge with the electrolytic tank path 30. The upstream side of the second electrode chamber outlet path 21 is connected to the second electrode chamber 2 b of the diaphragm electrolyzer 2, and the downstream side is connected to the upstream side of the drainage introduction path 19. The downstream side of the drainage introduction channel 19 is connected to the upstream side of the drainage channel 18. The downstream side of the drainage channel 18 is led out of the bathtub 1. The upstream side of the cleaning water discharge path 23 is connected to the cleaning water discharge port 7 b of the filtration tank 7, and the downstream side is connected to the upstream side of the drainage path 18 together with the drainage introduction path 19. In addition, the ion water bypass passage 24 connects the downstream side of the second electrode chamber outlet passage 21 and the downstream side of the first electrode chamber outlet passage 22.

Of the on-off valves, the first valve 32 is connected to the salt water tank passage 13, the third valve 34 is connected to the drainage introduction passage 19, the fourth valve 35 is connected to the electrolytic tank passage 30, and the fifth valve 36 is connected to the ionic water bypass. Road 24
The sixth valve 37 is provided in each of the washing water discharge passages 23, and opens and closes the flow of each flow passage at the position where the on-off valve is provided.

Here, the configuration of the salt water supply tank 4 is not limited to the above-described one. For example, the salt water supply tank 4 is provided as a tank storing salt water. The second electrode chamber 2b may be connected, and the salt water in the salt water supply tank 4 may be supplied to the second electrode chamber 2b by a pump different from the circulation pump 5 described above. The downstream side of the ion water channel 26 is upstream of the filtration tank 7 and the filtration channel 27
Or may be connected so as to merge in the middle of the inflow path 11,
It may be connected directly in the bathtub 1.

The operation of the bath water quality modifying device is shown in FIGS.
11 will be described. Here, the open / closed valves shown in white in these drawings indicate open valves, the open / closed valves shown in black represent closed valves, and the arrows in the flow passages indicate the respective valves. The direction of the flow of the bathtub water 31 in the road is shown.

When purifying the bath water 31 in the filtration tank 7, the first valve 32, the third valve 34, and the fourth valve 32 are used as shown in FIG.
The valve 35, the fifth valve 36, and the sixth valve 37 are closed, and the circulation pump 5 operates in this state. At this time, the circulation pump 5
By the action of the bathtub water 31, the inflow channel 11, the filtration channel 27,
It circulates through a circulation channel composed of the filtration water channel 25 and the outflow channel 16. At this time, the bath water 31 supplied from the filtration channel 27 to the filtration tank 7 is supplied from the water discharge port 10 of the nozzle 9 to the upstream side of the filtration tank 7, further passes through the filtration membrane 46, and is downstream of the filtration tank 7. The dirt, dust, bacteria, and the like mixed in the bathtub water 31 by bathing or the like in the filter tank 7 are filtered, and the bathtub water 31 is purified and can be kept clean. Further, at this time, when the temperature of the bathtub water 31 passing through the outflow passage 16 is lower than a predetermined set temperature, the heater 6 is operated to heat the bathtub water 31.

When the water quality of the bathtub water 31 is changed to alkaline, first, as shown in FIG.
Is opened, the third valve 34, the fourth valve 35, and the sixth valve 37 are closed, and the circulating pump 5 operates in this state. At this time, the bathtub water 31 is supplied by the operation of the circulation pump 5,
Electrolysis introduction path 12, salt water tank path 13, salt supply path 17, electrolytic tank path 30, first electrode chamber path 14, second electrode chamber path 15, first electrode chamber outlet path, first electrode chamber outlet path 22, ion A circulation flow path composed of a water bypass path 24, an ion water path 26, and an outflow path 16, an inflow path 11, a filtration flow path 27, a filtration water path 25,
It circulates through two circulation passages of the circulation passage constituted by the outflow passage 16. Inflow channel 11, filtration channel 27, filtration channel 2
5, in the circulation channel constituted by the outflow channel 16, FIG.
As in the case of (1), the bathtub water 31 is purified in the filtration tank 7. Further, sodium chloride in the salt water supply tank 4 is dissolved in the bath water 31 supplied to the salt water supply tank 4 from the salt water tank path 13 to generate salt water, and this salt water passes through the salt supply path 17 and the electrolytic tank path 30. Then, while being supplied from the first electrode chamber path 14 to the first electrode chamber 2a of the diaphragm electrolyzer 2, the second electrode chamber path 1
5 is supplied to the second electrode chamber 2b of the diaphragm electrolyzer 2, and the excess salt water in the first electrode chamber 2a and the second electrode chamber 2b passes through the first electrode chamber outlet passage 22, the ion water passage 26, and the outflow passage 16. Returned to bathtub 1 via

Next, as shown in FIG. 8, the fifth valve 36 is open, the first valve 32, the third valve 34, the fourth valve 35, and the sixth valve 37.
Is closed, and the circulation pump 5 continues to operate in this state. At this time, the circulation channel constituted by the inflow channel 11, the filtration channel 27, the filtration water channel 25, and the outflow channel 16 is maintained,
Purification of the bathtub water 31 is continued in the filtration tank 7. In this state, the platinum-iridium mixed electrode 3a is a cathode,
A voltage is applied between the electrodes so that the platinum electrode 3b becomes an anode, and alkaline ionized water is generated in the first electrode chamber 2a and acidic ionized water is generated in the second electrode chamber 2b by electrolysis in the diaphragm electrolyzer 2. I do. Here, since the platinum electrode 3b provided in the second electrode chamber 2b has a high oxygen generation efficiency, generation of chlorine in the acidic ionic water is suppressed. The ion water thus generated is held in the diaphragm electrolyzer 2.

Next, after the completion of the electrolysis, as shown in FIG. 9, the third valve 34, the fourth valve 35, and the sixth valve 37 are opened, the first valve 32, and the fifth valve 36 are closed, In this state, the circulation pump 5 operates continuously. In this state, the motor 8 is operated to rotate the nozzle 9. At this time, the inflow channel 11,
Bath water 31 is introduced from the first electrode chamber path 14 into the first electrode chamber 2a and from the second electrode chamber path 15 into the second electrode chamber 2b via the electrolysis introduction path 12 and the electrolytic cell path 30. Water flow occurs. The alkaline ionized water in the first electrode chamber 2a is pushed out into the bathtub water 31 and is supplied into the bathtub 1 from the outlet 44 through the first electrode chamber lead-out passage 22, the ion water passage 26, and the outflow passage 16, The water quality of the bathtub water 31 in the bathtub 1 is changed to alkaline. The acidic ion water in the second electrode chamber 2b is
The water is discharged out of the bathtub 1 via the second electrode chamber lead-out passage 21, the drain introduction passage 19, and the drain passage 18. On the other hand, the bath water 31 introduced into the filtration tank 7 through the filtration channel 27 is sprayed from the water discharge port 10 of the rotating nozzle 9 toward the filtration membrane 46, and adheres to the surface of the filtration membrane 46 by this water flow. The filtered dirt is stripped off and the filter membrane 46 is washed, and the washed bathtub water 31 containing the dirt does not pass through the filter membrane 46 having a high hydraulic resistance and the washing water outlet 7b is washed with the cleaning water having a low hydraulic resistance. The water passes through the discharge passage 23, is mixed with the acidic ion water in the drain passage 18, and dilutes the acidic ion water discharged to the outside of the bathtub 1.
At this time, chlorine in the acidic ionized water reacts with organic and inorganic substances such as dirt, dust, and bacteria contained in the bath water after the washing of the filtration tank and is decomposed, thereby suppressing the vaporization of harmful and odorous chlorine gas from the wastewater. You.

In this case, the operation of changing the water quality of the bathtub water 31 to alkaline and the operation of purifying the bathtub water 31 are performed simultaneously. Further, the acidic ionized water is temporarily stored in the second electrode chamber 2.
b, after being neutralized and diluted by a necessary amount and discharged, the discharge amount of the bath water 31 when discharging the acidic ionized water is reduced. Filtration membrane 46 originally discharged as it is for dilution of ion water
Since the bath water 31 after washing is used, the discharge amount of the bath water 31 is further reduced.

When the bathtub water 31 is to be sterilized, first, as shown in FIG. 7, the first valve 32 and the fifth valve 36 are opened, and the third valve 34, the fourth valve 35 and the sixth valve 37 are closed. State, and the circulation pump 5 operates in this state. At this time, the bath water 31 is supplied to the inflow channel 11 and the electrolysis introduction channel 1 by the operation of the circulation pump 5.
2, salt water tank path 13, salt supply path 17, electrolytic tank path 30, first electrode chamber path 14, second electrode chamber path 15, first electrode chamber lead-out path,
It is composed of a circulation flow path composed of the first electrode chamber lead-out path 22, an ion water bypass path 24, an ion water path 26, and an outflow path 16, and an inflow path 11, a filtration flow path 27, a filtration water path 25, and an outflow path 16. Circulates through two circulation channels.
Inflow channel 11, filtration channel 27, filtration water channel 25, outflow channel 16
In the circulating flow path constituted by, the bath water 31 is purified in the filtration tank 7 as in the case of FIG. Further, sodium chloride in the salt water supply tank 4 is dissolved in the bath water 31 supplied to the salt water supply tank 4 from the salt water tank path 13 to generate salt water, and this salt water passes through the salt supply path 17 and the electrolytic tank path 30. Then, the first electrode chamber 2 is supplied to the first electrode chamber 2 a of the diaphragm electrolyzer 2 from the first electrode chamber path 14, and the second electrode chamber 15 is supplied to the second electrode chamber 2 b of the diaphragm electrolyzer 2. Room 2a
The surplus salt water in the second electrode chamber 2b is returned to the bathtub 1 via the first electrode chamber outlet passage 22, the ion water passage 26, and the outflow passage 16.

Next, as shown in FIG. 8, the fifth valve 36 is open, the first valve 32, the third valve 34, the fourth valve 35, and the sixth valve 37.
Is closed, and the circulation pump 5 continues to operate in this state. At this time, the circulation channel constituted by the inflow channel 11, the filtration channel 27, the filtration water channel 25, and the outflow channel 16 is maintained,
Purification of the bathtub water 31 is continued in the filtration tank 7. In this state, the platinum-iridium mixed electrode 3a is an anode,
A voltage is applied between the electrodes so that the platinum electrode 3b becomes a cathode, and acidic ionized water is generated in the first electrode chamber 2a and alkaline ionized water is generated in the second electrode chamber 2b by electrolysis in the diaphragm electrolyzer 2. I do. Here, since the platinum-iridium mixed electrode 3a provided in the first electrode chamber 2a has a high chlorine generation efficiency, chlorine is generated efficiently in the acidic ionized water. The ion water thus generated is held in the diaphragm electrolyzer 2.

Next, after the end of the electrolysis, as shown in FIG. 10, the fourth valve 35 and the fifth valve 36 are open, and the first valve 32
The third valve 34 and the sixth valve 37 are closed, and in this state, the circulation pump 5 is continuously operated. At this time, the inflow channel 11,
The circulation flow path composed of the filtration flow path 27, the filtration water path 25, and the outflow path 16 is maintained, and the purification of the bath water 31 is continuously performed in the filtration tank 7. At this time, via the inflow path 11, the electrolysis introduction path 12, and the electrolytic cell path 30, the first electrode chamber path 14 enters the first electrode chamber 2a and the second electrode chamber path 15 enters the second electrode chamber 2b. A water flow into which the bath water 31 is introduced is generated. The acidic ionic water in the first electrode chamber 2a is pushed out by the bathtub water 31 and reaches the ion water channel 26 via the first electrode chamber lead-out passage 22, and the alkaline ionic water in the second electrode chamber 2b is Electrode chamber lead-out path 21, ion water bypass path 24
The ionized water channel 26 also reaches the ionized water channel 26, where the alkaline ionized water and the acidic ionized water are mixed. This mixed water is neutral or weakly alkaline ionized water, and has a high chlorine concentration because the acidic ionized water contains chlorine at a high concentration. This mixed water is mixed with the bath water 31 after being purified in the filtration tank 7 in the outflow passage 16, supplied into the bath tub 1 through the outflow passage 16 through the outflow passage 16, and mixed with chlorine in the mixed water. Bath water 31 in 1 is sterilized. In this case, bath water 31
Purification and sterilization of bathtub water 31 are performed simultaneously.

The operation of washing the filter membrane 46 while altering the bathtub water 31 to alkaline water quality and the operation of sterilizing the bathtub water 31 are alternately performed one time at a time, or one of the operations is repeated a plurality of times. The operation is performed once and the other operation is performed once. In this case, the bathtub water 31 can be maintained in an alkaline state, and can be maintained in a sterilized and sanitary state. In addition, the filtration membrane 46 is washed and filtered. The bath flow rate 31 is maintained by the filtration tank 7 at a high efficiency while the membrane flow rate of 46 is maintained.
Purification is performed.

When the bath tub water 31 is modified to have an acidic water quality, the first valve 32 and the fifth valve 36 are opened, the third valve 34, the fourth valve 35, and the sixth valve 37 are first opened as shown in FIG. Is closed, and the circulation pump 5 operates in this state. At this time, the bath water 31 is supplied by the circulation pump 5 so that the bath water 31 flows into the inflow passage 11, the electrolytic introduction passage 12, the electrolytic bath passage 30, the first electrode chamber passage 14, the first electrode chamber outlet passage, the first electrode chamber outlet passage 22, and the ionic water. A circulation channel composed of a bypass channel 24, an ion channel 26, and an outflow channel 16, the inflow channel 11, the filtration channel 27, and the filtration channel 2;
5. Circulate through two circulation passages of the circulation passage constituted by the outflow passage 16. In the circulation flow path constituted by the inflow path 11, the filtration flow path 27, the filtration water path 25, and the outflow path 16, the bath water 31 is purified in the filtration tank 7, as in the case of FIG. Also, the sodium chloride in the salt water supply tank 4
Bath water 31 supplied to the salt water supply tank 4 from the salt water tank path 13
To form salt water, which is supplied from the first electrode chamber line 14 to the first electrode chamber 2a of the diaphragm electrolyzer 2 via the salt supply channel 17 and the electrolytic cell channel 30 and the second electrode chamber 2a. It is supplied from the electrode chamber path 15 to the second electrode chamber 2 b of the diaphragm electrolyzer 2,
Excess salt water in the first electrode chamber 2a and the second electrode chamber 2b is returned to the bathtub 1 via the first electrode chamber lead-out passage 22, the ion water passage 26, and the outflow passage 16.

Next, as shown in FIG. 8, the fifth valve 36 is open, the first valve 32, the third valve 34, the fourth valve 35, and the sixth valve 37.
Is closed, and the circulation pump 5 continues to operate in this state. At this time, the circulation channel constituted by the inflow channel 11, the filtration channel 27, the filtration water channel 25, and the outflow channel 16 is maintained,
Purification of the bathtub water 31 is continued in the filtration tank 7. In this state, the platinum-iridium mixed electrode 3a is an anode,
A voltage is applied between the electrodes so that the platinum electrode 3b becomes a cathode, and acidic ionized water is generated in the first electrode chamber 2a and alkaline ionized water is generated in the second electrode chamber 2b by electrolysis in the diaphragm electrolyzer 2. I do. Here, since the platinum-iridium mixed electrode 3a provided in the first electrode chamber 2a has a high chlorine generation efficiency, chlorine is generated efficiently in the acidic ionized water. The ion water thus generated is held in the diaphragm electrolyzer 2.

Next, after the end of the electrolysis, as shown in FIG. 11, the first valve 32 and the fifth valve 36 are opened, the third valve 34, the fourth valve 35, and the sixth valve 37 are closed. In this state, the circulation pump 5 operates continuously. At this time, the circulation flow path composed of the inflow path 11, the filtration flow path 27, the filtration water path 25, and the outflow path 16 is maintained, and the purification of the bath water 31 in the filtration tank 7 is continued. Also, at this time, the first electrode chamber passage 1 passes through the inflow passage 11, the electrolysis introduction passage 12, and the electrolysis tank passage 30.
4, a water flow is generated in which the bath water 31 is introduced into the second electrode chamber 2 b from the second electrode chamber path 15 into the first electrode chamber 2 a. The acidic ionic water in the first electrode chamber 2a is pushed out by the bathtub water 31, and the first electrode chamber outlet passage 22, the ion water passage 26,
The water is supplied into the bathtub 1 from the outlet 44 via the outflow passage 16, and the water quality of the bathtub water 31 in the bathtub 1 is acidified. The alkaline ionized water in the second electrode chamber 2b is discharged to the outside of the bathtub 1 via the second electrode chamber outlet passage 21, the drain introduction passage 19, and the drain passage 18.

At this time, as shown in FIG.
7 may be opened, and the motor 8 may be operated to rotate the nozzle 9 in this state. In this case, the bath water 31 introduced into the filtration tank 7 via the filtration channel 27 is sprayed from the water discharge port 10 of the rotating nozzle 9 toward the filtration membrane 46, and the water flow causes the water to flow onto the surface of the filtration membrane 46. The attached dirt is stripped off, and the washed bathtub water 3 containing the dirt is removed.
1 passes the washing water outlet 7b through the washing water discharge passage 23 having a low hydraulic resistance without passing through the filtration membrane 46 having a high hydraulic resistance,
The water is mixed with the alkaline ionized water in the drain 18 to dilute the alkaline ionized water discharged out of the bathtub 1.

In the apparatus for modifying the quality of bath water, the bath water 31 is not supplied to the electrolytic cell 2 during electrolysis, so that the amount of bath water 31 supplied to the electrolytic cell 2 is reduced. Thus, contamination of the electrode surface and the diaphragm 45 by impurities and calcium contained in the bathtub water 31 can be suppressed.

FIG. 12 shows still another example of the bathtub water quality modifying apparatus according to the present invention. In this bathtub water quality modification device,
A circulation pump 5, a diaphragm electrolytic cell 2, a salt water supply tank filtration membrane 46 and a filtration tank 7 similar to those in FIG. 5 are provided.

Further, a flow path through which the bathtub water flows, and an on-off valve such as an electromagnetic valve for opening and closing the flow of these flow paths are provided. The bath water 31 referred to here includes salt water obtained by dissolving sodium chloride in the bath water 31, and acidic ion water and alkaline ion water obtained by electrolyzing the salt water and the bath water 31.

Of the flow path through which bath water 31 passes, inflow path 11
The downstream side is disposed in the bathtub water 31 in the bathtub 1, the downstream end thereof is opened as an inflow port 43, and the upstream side is connected to the circulation pump 5. The upstream side of the electrolysis introduction path 12 is connected to the circulation pump 5, and the downstream side is branched into a salt water tank path 13 and an electrolysis tank path 30. The downstream side of the salt water tank path 13 is connected to the inlet 4 d of the salt water supply tank 4. The downstream side of the electrolytic cell path 30 is branched into a first electrode chamber path 14 and a second electrode chamber path 15, and the downstream side of the first electrode chamber path 14 is connected to the first electrode chamber 2 a of the diaphragm electrolyzer 2. The downstream side of the electrode chamber path 15 is connected to the second electrode chamber 2 b of the diaphragm electrolyzer 2. The upstream side of the first electrode chamber lead-out passage 22 is connected to the first electrode chamber 2 a of the diaphragm electrolyzer 2, and the downstream side is the ion water passage 2.
6 and the downstream side of the ion water channel 26 is connected to the upstream side of the outflow channel 16. The downstream side of the outflow channel 16 is connected to bath water 31 in the bathtub 1, and the downstream end is opened as an outlet 44. The heater 6 is disposed in the outflow passage 16, and when the heater 6 is operating, the water flow passing through the outflow passage 16 is heated by the heater 6. Further, the upstream side of the salt supply path 17 is connected to the outlet 4 e of the salt water supply tank 4, and the downstream side is located in the middle of the flow path of the second electrode chamber path 15.
It is connected so as to merge with the second electrode chamber path 15. The upstream side of the second electrode chamber lead-out path 21 is connected to the second electrode chamber 2 b of the diaphragm electrolyzer 2, and the downstream side is connected to the upstream side of the cleaning ion path 28. The downstream side of the cleaning ion path 28 is connected to the filtration flow path 27 in the middle of the piping of the filtration flow path 27 so as to merge therewith. The filtration tank 7 is located upstream of the washing water discharge path 23.
The downstream side is connected to the upstream side of the drainage channel 18. The upstream side of the bathtub water bypass passage 29 is connected in the middle of the pipe of the inflow passage 11 so as to branch off from the inflow passage 11, and the downstream side is connected to the upstream side of the drainage passage 18 together with the washing water discharge passage 23. ing. Drainage 1
The downstream side of 8 is led out of the bathtub 1.

Among the on-off valves, the first valve 32 is connected to the salt water tank passage 13, and the second valve 33 is connected to the salt supply passage 17 of the second electrode chamber passage 15.
The fifth valve 36 is connected to the ion water bypass passage 24, the seventh valve 38 is connected to the first electrode chamber passage 14, the eighth valve 39 is connected to the cleaning ion passage 28, and the ninth valve 40 On the upstream side of the connection position of the filtration channel 27 with the washing ion channel 28,
The tenth valve 41 is connected to the bathtub water bypass passage 29 and the eleventh valve 42
Are respectively provided in the drainage passages 18 and open and close the flow of each flow passage at the position where the on-off valve is disposed.

Here, the downstream side of the ion channel 26 is the bathtub 1
You may connect directly inside.

FIG. 13 shows the operation of the bath water quality modifying device.
21 will be described. Here, in these drawings, the open / closed valves shown in white represent open valves, and the open / closed valves shown in black represent closed valves, respectively.
Arrows in the flow paths indicate the direction of the flow of bathtub water 31 in each flow path.

When purifying the bathtub water 31 in the filtration tank 7, the ninth valve 40 is open, the first valve 32, the second valve 33, the fifth valve 36, the seventh valve as shown in FIG. 38, 8th valve 3
The ninth, tenth and eleventh valves 41 and 42 are closed, and the circulation pump 5 operates in this state. At this time, the circulation pump 5
By the action of the bathtub water 31, the inflow channel 11, the filtration channel 27,
It circulates through a circulation channel composed of the filtration water channel 25 and the outflow channel 16. At this time, the bath water 31 supplied from the filtration channel 27 to the filtration tank 7 is supplied from the water discharge port 10 of the nozzle 9 to the upstream side of the filtration tank 7, further passes through the filtration membrane 46, and is downstream of the filtration tank 7. The dirt, dust, bacteria, and the like mixed in the bathtub water 31 by bathing or the like in the filter tank 7 are filtered, and the bathtub water 31 is purified and can be kept clean. Further, at this time, when the temperature of the bathtub water 31 passing through the outflow passage 16 is lower than a predetermined set temperature, the heater 6 is operated to heat the bathtub water 31.

When the water quality of the bathtub water 31 is changed to alkaline, first, as shown in FIG.
6, the ninth valve 40 is open, the second valve 33, the seventh valve 38, the eighth valve 39, the tenth valve 41, and the eleventh valve 42 are closed, and the circulation pump 5 operates in this state. At this time, the bath water 31 is supplied by the operation of the circulation pump 5 so that the bath water 31 flows into the inflow path 11, the electrolytic introduction path 12, the salt water tank path 13, the salt supply path 17, the second electrode chamber path 15, the second electrode chamber outlet path 21, the ionic water bypass path. 2
4. Two circulation flow paths: a circulation flow path composed of the ion water path 26 and the outflow path 16 and a circulation flow path composed of the inflow path 11, the filtration flow path 27, the filtration water path 25, and the outflow path 16. Circulate. In the circulation flow path including the inflow path 11, the filtration flow path 27, the filtration water path 25, and the outflow path 16, the bath water 31 is purified in the filtration tank 7, as in the case of FIG. Further, sodium chloride in the salt water supply tank 4 is dissolved in the bath water 31 supplied to the salt water supply tank 4 from the salt water tank path 13 to generate salt water, and this salt water passes through the salt supply path 17 and the electrolytic tank path 30. Then, the first electrode chamber 2 is supplied to the first electrode chamber 2 a of the diaphragm electrolyzer 2 from the first electrode chamber path 14, and the second electrode chamber 15 is supplied to the second electrode chamber 2 b of the diaphragm electrolyzer 2. Excess salt water in the chamber 2a and the second electrode chamber 2b is returned to the bathtub 1 via the first electrode chamber lead-out passage 22, the ion water passage 26, and the outflow passage 16.

Next, as shown in FIG. 15, the first valve 32, the fifth valve 36, and the ninth valve 40 are open, and the second valve 33, the seventh valve 3
The eighth, eighth, and thirty-ninth valve 41, the tenth valve 41, and the eleventh valve 42 are closed, and the circulation pump 5 continues to operate in this state.
At this time, the circulation channel constituted by the inflow channel 11, the filtration channel 27, the filtration water channel 25, and the outflow channel 16 is maintained, and the filtration tank 7 is maintained.
The purifying of the bathtub water 31 is continuously performed. In this state, the platinum-iridium mixed electrode 3a serves as a cathode and the platinum electrode 3
A voltage is applied between the electrodes so that b becomes an anode,
The first electrode chamber 2a is formed by electrolysis in the diaphragm electrolytic cell 2.
And alkaline ionized water is generated in the second electrode chamber 2b. The ion water thus generated is held in the diaphragm electrolyzer 2.

Next, after the electrolysis is completed, the seventh valve 38, the ninth valve 40, and the eleventh valve 42 are opened as shown in FIG.
The first valve 32, the second valve 33, the fifth valve 36, the eighth valve 39, and the tenth valve 41 are closed, and the circulation pump 5 continues to operate in this state. At this time, the inflow path 11 and the electrolysis introduction path 1
2. A water flow in which the bath water 31 is introduced into the first electrode chamber 2a from the first electrode chamber path 14 via the electrolytic cell path 30 is generated. The alkaline ionized water in the first electrode chamber 2a is pushed out into the bathtub water 31 and is supplied into the bathtub 1 from the outlet 44 through the first electrode chamber lead-out passage 22, the ion water passage 26, and the outflow passage 16, The water quality of the bathtub water 31 in the bathtub 1 is changed to alkaline. On the other hand, the bath water 31 introduced into the filtration tank 7 via the filtration channel 27 does not pass through the filtration membrane 46 having a high hydraulic resistance and flows through the cleaning water discharge path 23 having a low hydraulic resistance through the cleaning water discharge port 7b. The water passes through the drainage channel 18 and is discharged out of the bathtub 1.

Next, as shown in FIG. 17, the seventh valve 38, the eighth valve 39, and the eleventh valve 42 are open, and the first valve 32, the second valve 33, the fifth valve 36, the ninth valve 40, The tenth valve 41 is closed, and the circulation pump 5 continues to operate in this state.
At this time, via the inflow path 11, the electrolysis introduction path 12, and the electrolytic cell path 30, the first electrode chamber path 14 into the first electrode chamber 2a,
A water flow for introducing the bath water 31 from the second electrode chamber passage 15 into the second electrode chamber 2b is generated. The alkaline ionized water in the first electrode chamber 2a is continuously pushed out by the bath water 31 similarly to the case of FIG. 16, and is discharged through the first electrode chamber outlet passage 22, the ion water passage 26, the outflow passage 16 and the outlet 44. Is supplied into the bathtub 1 to change the water quality of the bathtub water 31 in the bathtub 1 to alkaline. The acidic ion water in the second electrode chamber 2b is
Second electrode chamber lead-out passage 21, cleaning ion passage 28, filtration passage 2
It is introduced into the filtration tank 7 via. The acidic ionized water is stored in the filtration tank 7, and excess acid ionized water in the filtration tank 7 passes through the washing water discharge passage 23 having a low hydraulic resistance, and is discharged to the outside of the bathtub 1 through the drainage passage 18. Here, instead of performing the operation shown in FIG. 16, the operation shown in FIG.
The discharge to alkaline ionized water and acidic ionized water from the diaphragm electrolyzer 2 may be started at the same time by shifting to the operation shown in FIG.

Next, as shown in FIG. 18, the ninth valve 40 and the tenth valve 41 are open, the first valve 32, the second valve 33, the fifth valve 36, the seventh valve 38, the eighth valve 39, The eleventh valve 42 is closed, and the circulation pump 5 is continuously operated in this state.
In this state, the motor 8 is operated to rotate the nozzle 9. At this time, a closed circulation flow path composed of the bathtub water bypass path 29, the filtration flow path 27, and the washing water discharge path 23 is formed, and the acidic ion water stored in the filtration tank 7 circulates through the closed circulation flow path. . The acidic ionized water circulating through the closed circulation flow path is introduced into the filtration tank 7 via the filtration flow path 27, and is sprayed from the water discharge port 10 of the rotating nozzle 9 toward the filtration membrane 46. Dirt adhering to the surface of the filtration membrane 46 is removed. The washed bathtub water 31 containing the dirt passes through the washing water outlet 7b through the washing water discharge passage 23 having a low hydraulic resistance without passing through the filtration membrane 46 having a high hydraulic resistance, and passes through the bathtub water bypass passage 29. Then, it is again introduced into the filtration tank 7 from the filtration channel 27. At this time, the organic substances attached to the filtration membrane 46 are decomposed and removed by chlorine in the acidic ionic water, and the metal salts attached to the filtration membrane 46 are dissolved by keeping the filtration membrane 46 under acidity.

Next, as shown in FIG. 19, the ninth valve 40 and the eleventh valve 42 are open, the first valve 32, the second valve 33, the fifth valve 36, the seventh valve 38, the eighth valve 39, The tenth valve 41 is closed, and the circulation pump 5 continues to operate in this state.
At this time, the inflow channel 11, the filtration channel 27, the washing water discharge channel 2
3. A flow path composed of the drainage channel 18 is formed, and the bath water 31 introduced from the outlet 44 pushes out acidic ionized water containing dirt that has been circulating in the closed circulation channel, and the drainage channel 1
The water is discharged out of the bathtub 1 via 8, and the flow path is further rinsed for cleaning. Then, it returns to the normal circulation state shown in FIG.

When the bathtub water 31 is to be sterilized, first, as shown in FIG. 14, the first valve 32, the fifth valve 36, the ninth valve 4
0 is in an open state, the second valve 33, the seventh valve 38, the eighth valve 39, the tenth valve 41, and the eleventh valve 42 are in a closed state, and the circulating pump 5 operates in this state. At this time, the bath water 31 is supplied by the operation of the circulation pump 5 so that the bath water 31 flows into the inflow path 11, the electrolytic introduction path 12, the salt water tank path 13, the salt supply path 17, the second electrode chamber path 15, the second electrode chamber outlet path 21, and the ionic water bypass path. 24, Ion waterway 2
6. Circulation flow path composed of outflow path 16 and inflow path 1
1. Circulation is performed in two circulation passages of a circulation passage composed of a filtration passage 27, a filtration water passage 25, and an outflow passage 16. In the circulation flow path including the inflow path 11, the filtration flow path 27, the filtration water path 25, and the outflow path 16, the bath water 31 is purified in the filtration tank 7, as in the case of FIG. Further, sodium chloride in the salt water supply tank 4 is dissolved in the bath water 31 supplied to the salt water supply tank 4 from the salt water tank path 13 to generate salt water, and this salt water passes through the salt supply path 17 and the electrolytic tank path 30. And
From the first electrode chamber path 14 to the first electrode chamber 2a of the diaphragm electrolyzer 2
And the excess salt water in the first electrode chamber 2a and the second electrode chamber 2b is supplied from the second electrode chamber path 15 to the second electrode chamber 2b of the diaphragm electrolyzer 2. 22,
The water is returned to the bathtub 1 via the ion water channel 26 and the outflow channel 16.

Next, as shown in FIG. 15, the first valve 32, the fifth valve 36, the ninth valve 40 are open, the second valve 33, the seventh valve 3
The eighth, eighth, and thirty-ninth valve 41, the tenth valve 41, and the eleventh valve 42 are closed, and the circulation pump 5 continues to operate in this state.
At this time, the circulation channel constituted by the inflow channel 11, the filtration channel 27, the filtration water channel 25, and the outflow channel 16 is maintained, and the filtration tank 7 is maintained.
The purifying of the bathtub water 31 is continuously performed. In this state, the platinum-iridium mixed electrode 3a serves as the anode and the platinum electrode 3
A voltage is applied between the electrodes so that b becomes a cathode,
The first electrode chamber 2a is formed by electrolysis in the diaphragm electrolytic cell 2.
Acidic ion water is generated, and alkaline ion water is generated in the second electrode chamber 2b. Here, since the platinum-iridium mixed electrode 3a provided in the first electrode chamber 2a has a high chlorine generation efficiency, chlorine is generated efficiently in the acidic ionized water. The ion water thus generated is held in the diaphragm electrolyzer 2.

Next, after the completion of the electrolysis, as shown in FIG. 20, the second valve 33, the seventh valve 38, the first valve 32, the fifth valve 3
6, the ninth valve 40 is open, the eighth valve 39, the tenth valve 41,
The eleventh valve 42 is closed, and the circulation pump 5 is continuously operated in this state. At this time, the inflow channel 11 and the filtration channel 2
The circulation flow path composed of the filtration water channel 25 and the outflow channel 16 is maintained, and the purification of the bath water 31 is continued in the filtration tank 7. At this time, the inflow path 11 and the electrolysis introduction path 1
2. Via the electrolytic cell channel 30, the first electrode channel 14 enters the first electrode chamber 2a, and the second electrode chamber channel 15 enters the second electrode chamber 2a.
A water flow into which the bathtub water 31 is introduced is generated in b. The acidic ionic water in the first electrode chamber 2a is pushed out by the bathtub water 31 and reaches the ion water channel 26 via the first electrode chamber lead-out passage 22, and the alkaline ionic water in the second electrode chamber 2b is It again reaches the ion water channel 26 via the electrode chamber lead-out channel 21 and the ion water bypass channel 24, and the alkaline ion water and the acidic ion water are mixed in the ion water channel 26. This mixed water is neutral or weakly alkaline ionized water, and has a high chlorine concentration because the acidic ionized water contains chlorine at a high concentration. This mixed water is mixed with the bath water 31 after being purified in the filtration tank 7 in the outflow passage 16, supplied into the bath tub 1 through the outflow passage 16 through the outflow passage 16, and mixed with chlorine in the mixed water. Bath water 31 in 1 is sterilized. In this case, purification of bath water 31 and sterilization of bath water 31 are performed simultaneously.

The operation of washing the filter membrane 46 while altering the water quality of the bathtub water 31 to alkaline and the operation of sterilizing the bathtub water 31 are alternately performed one time at a time, or one of the operations is repeated a plurality of times. The operation is performed once while the other operation is performed once. In this case, the bathtub water 31 can be maintained in an alkaline state, and can be maintained in a sterilized and sanitary state. The bath flow rate 31 is maintained at a high efficiency with the membrane flow rate of 46 maintained.
Purification is performed.

When the bath tub water 31 is modified to have an acidic water quality, first, as shown in FIG.
6, the ninth valve 40 is open, the second valve 33, the seventh valve 38, the eighth valve 39, the tenth valve 41, and the eleventh valve 42 are closed, and the circulation pump 5 operates in this state. At this time, the bath water 31 is supplied by the operation of the circulation pump 5 so that the bath water 31 flows into the inflow path 11, the electrolytic introduction path 12, the salt water tank path 13, the salt supply path 17, the second electrode chamber path 15, the second electrode chamber outlet path 21, the ionic water bypass path. 2
4. Two circulation flow paths: a circulation flow path composed of the ion water path 26 and the outflow path 16 and a circulation flow path composed of the inflow path 11, the filtration flow path 27, the filtration water path 25, and the outflow path 16. Circulate. In the circulation flow path including the inflow path 11, the filtration flow path 27, the filtration water path 25, and the outflow path 16, the bath water 31 is purified in the filtration tank 7, as in the case of FIG. Further, sodium chloride in the salt water supply tank 4 is dissolved in the bath water 31 supplied to the salt water supply tank 4 from the salt water tank path 13 to generate salt water, and this salt water passes through the salt supply path 17 and the electrolytic tank path 30. Then, the first electrode chamber 2 is supplied to the first electrode chamber 2 a of the diaphragm electrolyzer 2 from the first electrode chamber path 14, and the second electrode chamber 15 is supplied to the second electrode chamber 2 b of the diaphragm electrolyzer 2. Excess salt water in the chamber 2a and the second electrode chamber 2b is returned to the bathtub 1 via the first electrode chamber lead-out passage 22, the ion water passage 26, and the outflow passage 16.

Next, as shown in FIG. 15, the first valve 32, the fifth valve 36, and the ninth valve 40 are open, the second valve 33, the seventh valve 3
The eighth, eighth, and thirty-ninth valve 41, the tenth valve 41, and the eleventh valve 42 are closed, and the circulation pump 5 continues to operate in this state.
At this time, the circulation channel constituted by the inflow channel 11, the filtration channel 27, the filtration water channel 25, and the outflow channel 16 is maintained, and the filtration tank 7 is maintained.
The purifying of the bathtub water 31 is continuously performed. In this state, the platinum-iridium mixed electrode 3a serves as the anode and the platinum electrode 3
A voltage is applied between the electrodes so that b becomes a cathode,
The first electrode chamber 2a is formed by electrolysis in the diaphragm electrolytic cell 2.
And alkaline ionized water is generated in the second electrode chamber 2b. Here, since the platinum-iridium mixed electrode 3a provided in the first electrode chamber 2a has a high chlorine generation efficiency, chlorine is generated efficiently in the acidic ionized water. The ion water thus generated is held in the diaphragm electrolyzer 2.

Next, after the electrolysis is completed, the seventh valve 38, the ninth valve 40, and the eleventh valve 42 are opened as shown in FIG.
The first valve 32, the second valve 33, the fifth valve 36, the eighth valve 39, and the tenth valve 41 are closed, and the circulation pump 5 continues to operate in this state. At this time, the inflow path 11 and the electrolysis introduction path 1
2. A water flow in which the bath water 31 is introduced into the first electrode chamber 2a from the first electrode chamber path 14 via the electrolytic cell path 30 is generated. The acidic ionic water in the first electrode chamber 2a is pushed out by the bathtub water 31, and the first electrode chamber outlet passage 22, the ion water passage 26,
The water is supplied into the bathtub 1 from the outlet 44 via the outflow passage 16, and the water quality of the bathtub water 31 in the bathtub 1 is acidified. On the other hand, the bath water 31 introduced into the filtration tank 7 via the filtration flow path 27 does not pass through the filtration membrane 46 having high hydraulic resistance, and flows through the cleaning water discharge port 7b through the cleaning water discharge path 23 having low hydraulic resistance. The water passes through the drainage channel 18 and is discharged out of the bathtub 1.

Next, as shown in FIG. 17, the seventh valve 38, the eighth valve 39, and the eleventh valve 42 are open, and the first valve 32, the second valve 33, the fifth valve 36, the ninth valve 40, The tenth valve 41 is closed, and the circulation pump 5 continues to operate in this state.
At this time, via the inflow path 11, the electrolysis introduction path 12, and the electrolytic cell path 30, the first electrode chamber path 14 into the first electrode chamber 2a,
A water flow for introducing the bath water 31 from the second electrode chamber passage 15 into the second electrode chamber 2b is generated. The acidic ionic water in the first electrode chamber 2a continues to be supplied to the bath water 31 as in the case of FIG.
To the first electrode chamber outlet passage 22 and the ion water passage 2
6. The water is supplied into the bathtub 1 from the outlet 44 via the outflow passage 16, and the water quality of the bathtub water 31 in the bathtub 1 is changed to acidic. Further, the alkaline ionized water in the second electrode chamber 2b is supplied to the second electrode chamber outlet path 21, the cleaning ion path 28, the filtration path 27.
Through the filter tank 7. The alkaline ionized water in the filtration tank 7 passes through the washing water discharge passage 23 having a low hydraulic resistance, and is discharged out of the bathtub 1 through the drainage passage 18. Here, the operation shown in FIG. 15 is directly shifted to the operation shown in FIG. 17 without performing the operation shown in FIG. 16, so that the discharge of the alkaline ionized water and the acidic ionized water from the diaphragm electrolyzer 2 is started simultaneously. You may.

In the apparatus for modifying water quality of bath water, the bath water 31 is not supplied to the electrolytic cell 2 during electrolysis. Thus, contamination of the electrode surface and the diaphragm 45 by impurities and calcium contained in the bathtub water 31 can be suppressed.

[0074]

According to a first aspect of the present invention, there is provided an apparatus for modifying water quality of bath tub water, wherein the salt water supplies sodium chloride into a diaphragm electrolytic cell and one of the electrolytic chambers separated by a diaphragm in the diaphragm electrolytic cell. A supply tank and a bathtub water to be supplied to the electrolysis are supplied from the bathtub to the diaphragm electrolyzer, and one of the alkaline ionic water and the acidic ionic water generated by the electrolysis in the diaphragm electrolyzer is supplied to the bathtub. A bathtub water flow path for supplying and discharging the other ion water out of the bathtub, and a circulation pump for generating a water flow in the bathtub water flow path are provided. The conductivity can be improved by adding sodium chloride, the power required for electrolysis can be reduced, and the concentration of chloride ions and sodium ions in the bath water in the diaphragm electrolyzer is improved, resulting in electrolysis. The hydroxide on the cathode side In addition to generating alkaline ionized water having a high concentration of lithium, acidic ionized water having a high concentration of hydrochloric acid can be generated on the anode side, and such ionized water can be used for modifying the pH of bath water. .

The bath water quality modifying apparatus according to claim 2 of the present invention, in addition to the constitution of claim 1, further comprises an electrolysis in the diaphragm electrolyzer during electrolysis in the diaphragm electrolyzer. One of the generated alkaline ionized water and acidic ionized water is continuously supplied to the bath, and after the completion of the electrolysis in the diaphragm electrolyzer, the other is discharged out of the bath. The present invention can reduce the amount of drainage when discharging ionized water out of the bathtub, thereby suppressing a rapid decrease in bathtub water in the bathtub.

The bath water quality modifying apparatus according to claim 3 of the present invention is a salt water supply apparatus for supplying sodium chloride to a diaphragm electrolyzer and both electrolysis chambers separated by a diaphragm in the diaphragm electrolyzer. A tank and a bath water to be subjected to electrolysis are supplied from the bath to the diaphragm electrolyzer, and after the electrolysis in the diaphragm electrolyzer is completed, alkaline ionized water and acidic ionic water generated by electrolysis in the diaphragm electrolyzer are supplied. A tub water flow path for supplying one of the ion water to the bath tub and discharging the other ion water out of the bath tub, and a circulation pump for generating a water flow in the bath tub water flow path. Sodium chloride can be added to the bath water in a diaphragm electrolyzer to improve conductivity, reduce the power required for electrolysis, and reduce chloride ions and sodium in the bath water in the diaphragm electrolyzer. Ion concentration It is possible to generate alkaline ionized water having a high concentration of sodium hydroxide on the cathode side by electrolysis and to generate acidic ionized water having a high concentration of hydrochloric acid on the anode side by electrolysis. pH
It can also be used for modification of water, and can reduce the amount of effluent when discharging ionized water out of the bathtub, thereby suppressing the rapid decrease of bathtub water in the bathtub. The present invention can reduce the amount of bath water supplied to the diaphragm electrolyzer to suppress contamination of the electrode surface and the diaphragm due to impurities and calcium contained in the bath water.

The water quality modifying apparatus for bathtub water according to claim 4 of the present invention, in addition to the constitution according to any one of claims 1 to 3, further comprises an alkaline ionized water generated by electrolysis in a diaphragm electrolyzer and an acidic water. The operation of supplying the alkaline ionized water of the ionized water to the bathtub and discharging the acidic ionized water out of the bathtub, and the operation of supplying both the alkaline ionized water and the acidic ionized water generated by electrolysis to the bathtub once. Alternately, or one operation is performed a plurality of times, while the other operation is performed once, and the water quality of the bathtub in the bathtub is changed to alkaline by supplying alkaline ionized water to the bathtub. In addition, the bath water in the bath tub is made alkaline by supplying neutral or weakly alkaline mixed water having a high chlorine concentration, in which alkaline ion water and acidic ion water are mixed, to the bath tub. One in which it is possible to sterilize the bath water by keeping the as chlorine.

Further, in addition to the apparatus for modifying the quality of bathtub water according to claim 5 of the present invention,
A first electrolytic chamber having a platinum-iridium mixture electrode whose surface is formed of a platinum-iridium mixture, and a diaphragm electrolytic cell provided with a second electrolytic chamber having a platinum electrode whose surface is formed of platinum; -The alkaline ionic water generated in the diaphragm electrolyzer when the electrolysis is performed using the iridium mixture electrode as the cathode and the platinum electrode as the anode is supplied to the bath, and the acidic ion water is discharged out of the bath, and the platinum electrode is discharged. Cathode, comprising a bath water channel for supplying both alkaline ionized water and acidic ionized water generated in the diaphragm electrolyzer when electrolysis is performed using the platinum-iridium mixture electrode as the anode. Yes, when supplying alkaline ionized water to the bathtub, acidic ionized water is generated in the electrode chamber where a platinum electrode with high oxygen generation efficiency is installed, and the salt in the acidic ionized water discharged is discharged. It can prevent harmful and odorous chlorine gas from evaporating from wastewater by reducing the concentration and releasing it into the atmosphere.Also, neutral or mixed alkaline ionized water and acidic ionized water can be used. When supplying weakly alkaline mixed water to the bathtub, acidic ionized water is generated in the electrode chamber where the platinum-iridium mixture electrode with high chlorine generation efficiency is installed, and the chlorine concentration in the mixed water is improved to sterilize it. The performance can be improved, and the bath water can be sterilized with high-concentration chlorine while the bath water in the bath is kept alkaline.

According to a sixth aspect of the present invention, there is provided an apparatus for modifying water quality of bathtub water according to any one of the first to fifth aspects, further comprising a platinum-iridium mixture electrode whose surface is formed of a platinum-iridium mixture. A first electrolytic chamber having a first electrolytic chamber and a second electrolytic chamber having a platinum electrode whose surface is formed of platinum, and a diaphragm-equipped electrolytic cell provided with a platinum-iridium mixture electrode as a cathode and a platinum electrode as an anode for electrolysis. When the alkaline ionized water generated in the diaphragm electrolyzer is supplied to the bath and the acidic ionized water is discharged out of the bath, the electrolysis is performed using the platinum electrode as the cathode and the platinum-iridium mixture electrode as the anode. It is provided with a bath water channel for discharging the alkaline ionized water generated in the diaphragm electrolyzer to the outside of the bathtub and supplying the acidic ionized water to the bathtub,
When supplying alkaline ionized water to the bathtub, acidic ionized water is generated in an electrode chamber equipped with a platinum electrode with high oxygen generation efficiency, and the concentration of chlorine in the discharged acidic ionized water is reduced to be harmful from wastewater. It can prevent the odorous chlorine gas from evaporating and being released into the atmosphere. When supplying acidic ionized water to the bathtub, the acidic ionized water is converted into platinum-iridium having a high chlorine generation efficiency. It is generated in the electrode chamber where the mixture electrode is disposed, and can improve the sterilization performance by increasing the chlorine concentration in the acidic ionized water, and acidify the bath water in the bathtub with the acidic ionized water. In addition, bath water can be sterilized with high-concentration chlorine.

A water quality modifying device according to claim 7 of the present invention is characterized in that, in addition to any one of the constitutions of claims 1 to 6, one of alkaline ionic water and acidic ionic water generated in a diaphragm electrolyzer. Is provided with a bathtub water flow path for supplying the ionized water to the bathtub and diluting the other ionized water with the bathtub water and then discharging the ionized water out of the bathtub, and diluting the discharged ionized water with the bathtub water. Can be discharged after approaching neutrality, especially in the case of discharging acidic ionized water, by suppressing the vaporization of harmful and odorous chlorine gas from wastewater by diluting with bath water to approach neutrality The bathtub water quality modifying device according to claim 8 of the present invention is
In addition to the configuration according to any one of claims 1 to 7, a filtration tank for purifying bath water, and bath water supplied to the filtration tank as washing water for the filtration tank, and alkaline ionic water generated in the diaphragm electrolytic cell. And a bath water flow path for supplying one ion water of the acidic ion water to the bath and diluting the other ion water with the bath water after washing the filtration bath, and then discharging the water out of the bath. It can filter out dirt, dust, bacteria, etc. mixed in the bathtub water by bathing in a filter tank, etc., to keep the bathtub water clean, and it is also possible to wash the filter tank with the bathtub water. It is also possible to dilute the ionic water to be discharged with the bath water used for washing the filtration tank and bring it closer to neutrality, and to discharge the ion water and the bath water after washing the filtration tank. Reduce the amount of drainage compared to when discharging separately The rapid decrease of water can be suppressed, and especially in the case of discharging acidic ionized water, the chlorine in the acidic ionized water contains organic and inorganic substances such as dirt, dust, and bacteria contained in the bath water after washing the filtration tank. Is decomposed by reacting with
It can suppress the vaporization of harmful and odorous chlorine gas from wastewater.

According to a ninth aspect of the present invention, there is provided an apparatus for modifying water quality of bathtub water, further comprising: By filtering dirt, dust, bacteria and the like mixed in the bathtub water by bathing or the like, the bathtub water can be kept clean.

The water quality modifying apparatus according to claim 10 of the present invention is characterized in that, in addition to the constitution of claim 9, a filtration tank provided with a hollow fiber membrane as a filtration membrane, and a diaphragm having a filtration tank as washing water for the filtration tank. A bath tub water flow path for supplying the acidic ion water generated in the tank, the chlorine in the acidic ion water decomposes and removes organic substances attached to the hollow fiber membrane, and removes the hollow fiber membrane from the acidic fiber. By setting it below, the metal salt adhering to the hollow fiber membrane can be dissolved and discharged, and the washing property of the filtration tank can be improved.

[Brief description of the drawings]

FIG. 1 is a schematic diagram showing an example of an embodiment of the present invention.

FIG. 2 is a schematic diagram showing the operation of the above.

FIG. 3 is a schematic view showing another operation of the above.

FIG. 4 is a schematic view showing still another operation of the above.

FIG. 5 is a schematic diagram showing another example of the embodiment of the present invention.

FIG. 6 is a schematic diagram showing the operation of the above.

FIG. 7 is a schematic diagram showing another operation of the above.

FIG. 8 is a schematic diagram showing still another operation of the above.

FIG. 9 is a schematic diagram showing still another operation of the above.

FIG. 10 is a schematic diagram showing still another operation of the above.

FIG. 11 is a schematic diagram showing still another operation of the above.

FIG. 12 is a schematic diagram showing still another example of the embodiment of the present invention.

FIG. 13 is a schematic diagram showing the operation of the above.

FIG. 14 is a schematic diagram showing another operation of the above.

FIG. 15 is a schematic view showing still another operation of the above.

FIG. 16 is a schematic diagram showing still another operation of the above.

FIG. 17 is a schematic view showing still another operation of the above.

FIG. 18 is a schematic view showing still another operation of the above.

FIG. 19 is a schematic view showing still another operation of the above.

FIG. 20 is a schematic view showing still another operation of the above.

FIG. 21 is a schematic view showing still another operation of the above.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 bath tub 2 diaphragm electrolysis tank 3 a platinum-iridium mixed electrode 3 b platinum electrode 4 salt water supply tank 5 circulation pump 7 filtration tank 31 bath water 45 diaphragm 46 filtration membrane

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[Procedure amendment]

[Submission Date] October 25, 1999 (1999.10.
25)

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0039

[Correction method] Change

[Correction contents]

When the water quality of the bathtub water 31 is changed to alkaline, first, as shown in FIG.
Is opened, the third valve 34, the fourth valve 35, and the sixth valve 37 are closed, and the circulating pump 5 operates in this state. At this time, the bathtub water 31 is supplied by the operation of the circulation pump 5,
An electrolysis introduction path 12, a salt water tank path 13, a salt supply path 17, an electrolysis tank path 30, a first electrode chamber path 14, a second electrode chamber path 15, a first electrode chamber outlet path 22, a second electrode chamber outlet path 21 , A circulation flow path including an ion water bypass path 24, an ion water path 26, and an outflow path 16, the inflow path 11, the filtration flow path 27, and the filtration water path 2;
5. Circulate through two circulation passages of the circulation passage constituted by the outflow passage 16. In the circulation flow path constituted by the inflow path 11, the filtration flow path 27, the filtration water path 25, and the outflow path 16, the bath water 31 is purified in the filtration tank 7, as in the case of FIG. Also, the sodium chloride in the salt water supply tank 4
Bath water 31 supplied to the salt water supply tank 4 from the salt water tank path 13
To form salt water, which is supplied from the first electrode chamber line 14 to the first electrode chamber 2a of the diaphragm electrolyzer 2 via the salt supply channel 17 and the electrolytic cell channel 30 and the second electrode chamber 2a. It is supplied from the electrode chamber path 15 to the second electrode chamber 2 b of the diaphragm electrolyzer 2,
Excess salt water in the first electrode chamber 2a and the second electrode chamber 2b is returned to the bathtub 1 via the first electrode chamber outlet path 22 , the second electrode chamber outlet path 21 , the ion water path 26, and the outflow path 16. .

[Procedure amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0043

[Correction method] Change

[Correction contents]

When the bathtub water 31 is to be sterilized, first, as shown in FIG. 7, the first valve 32 and the fifth valve 36 are opened, and the third valve 34, the fourth valve 35 and the sixth valve 37 are closed. State, and the circulation pump 5 operates in this state. At this time, the bath water 31 is supplied to the inflow channel 11 and the electrolysis introduction channel 1 by the operation of the circulation pump 5.
2, salt water tank path 13, salt supply path 17, electrolytic tank path 30, first electrode chamber path 14, second electrode chamber path 15, first electrode chamber lead-out path 2
2, the second electrode chamber lead-out path 21 , an ion water bypass path 24,
It circulates through two circulation flow paths: a circulation flow path composed of the ion water path 26 and the outflow path 16 and a circulation flow path composed of the inflow path 11, the filtration flow path 27, the filtration water path 25, and the outflow path 16. I do. In the circulation flow path constituted by the inflow path 11, the filtration flow path 27, the filtration water path 25, and the outflow path 16, the bath water 31 is purified in the filtration tank 7, as in the case of FIG. Further, sodium chloride in the salt water supply tank 4 is dissolved in the bath water 31 supplied from the salt water tank path 13 to the salt water supply tank 4 to generate salt water.
0, is supplied from the first electrode chamber path 14 to the first electrode chamber 2a of the diaphragm electrolyzer 2 and from the second electrode chamber path 15 is supplied to the second electrode chamber 2b of the diaphragm electrolyzer 2; Excess salt water in the first electrode chamber 2a and the second electrode chamber 2b is discharged from the first electrode chamber outlet passage 22 , the second electrode chamber outlet passage 21 , the ion water passage 26,
It is returned to the bathtub 1 via the outflow channel 16.

[Procedure amendment 3]

[Document name to be amended] Statement

[Correction target item name] 0047

[Correction method] Change

[Correction contents]

When the bath tub water 31 is modified to have an acidic water quality, the first valve 32 and the fifth valve 36 are opened, the third valve 34, the fourth valve 35, and the sixth valve 37 are first opened as shown in FIG. Is closed, and the circulation pump 5 operates in this state. At this time, the bath water 31 is supplied by the operation of the circulation pump 5 to the inflow path 11, the electrolysis introduction path 12, the electrolysis tank path 30, the first electrode chamber path 14, and the second
Electrode chamber path 15, first electrode chamber lead-out path 22, second electrode chamber lead-out
The path 21 , the circulating flow path composed of the ion water bypass path 24, the ionic water path 26, and the outflow path 16, and the circulation flow path composed of the inflow path 11, the filtration flow path 27, the filtration water path 25, and the outflow path 16. Circulate through two circulation channels. In the circulation flow path constituted by the inflow path 11, the filtration flow path 27, the filtration water path 25, and the outflow path 16, the bath water 31 is purified in the filtration tank 7, as in the case of FIG. Further, sodium chloride in the salt water supply tank 4 is dissolved in the bath water 31 supplied to the salt water supply tank 4 from the salt water tank path 13 to generate salt water, and this salt water passes through the salt supply path 17 and the electrolytic tank path 30. Then, the first electrode chamber 2 is supplied to the first electrode chamber 2 a of the diaphragm electrolyzer 2 from the first electrode chamber path 14, and the second electrode chamber 15 is supplied to the second electrode chamber 2 b of the diaphragm electrolyzer 2. Chamber 2a and second electrode chamber 2
The excess salt water in b is discharged from the first electrode chamber outlet passage 22 and the second electrode chamber.
The water is returned to the bathtub 1 via the outlet channel 21 , the ion water channel 26, and the outflow channel 16.

[Procedure amendment 4]

[Document name to be amended] Statement

[Correction target item name] 0059

[Correction method] Change

[Correction contents]

When the water quality of the bathtub water 31 is changed to alkaline, first, as shown in FIG.
6, the ninth valve 40 is open, the second valve 33, the seventh valve 38, the eighth valve 39, the tenth valve 41, and the eleventh valve 42 are closed, and the circulation pump 5 operates in this state. At this time, the bath water 31 is supplied by the operation of the circulation pump 5 so that the bath water 31 flows into the inflow path 11, the electrolytic introduction path 12, the salt water tank path 13, the salt supply path 17, the second electrode chamber path 15, the second electrode chamber outlet path 21, the ionic water bypass path. 2
4. Two circulation flow paths: a circulation flow path composed of the ion water path 26 and the outflow path 16 and a circulation flow path composed of the inflow path 11, the filtration flow path 27, the filtration water path 25, and the outflow path 16. Circulate. In the circulation flow path including the inflow path 11, the filtration flow path 27, the filtration water path 25, and the outflow path 16, the bath water 31 is purified in the filtration tank 7, as in the case of FIG. Further, sodium chloride in the salt water supply tank 4 is dissolved in the bath water 31 supplied to the salt water supply tank 4 from the salt water tank passage 13 to generate salt water, and the salt water is formed in the salt supply passage 17 and the second electrode chamber passage 15. Is supplied to the second electrode chamber 2b of the diaphragm electrolyzer 2, and the excess salt water in the second electrode chamber 2b is returned to the bathtub 1 via the first electrode chamber outlet passage 22, the ion water passage 26, and the outflow passage 16. Is done.

[Procedure amendment 5]

[Document name to be amended] Statement

[Correction target item name] 0060

[Correction method] Change

[Correction contents]

Next, as shown in FIG. 15 , the fifth valve 36 and the ninth valve 40 are open, the first valve 32, the second valve 33, and the seventh valve 3
The eighth, eighth, and thirty-ninth valve 41, the tenth valve 41, and the eleventh valve 42 are closed, and the circulation pump 5 continues to operate in this state.
At this time, the circulation channel constituted by the inflow channel 11, the filtration channel 27, the filtration water channel 25, and the outflow channel 16 is maintained, and the filtration tank 7 is maintained.
The purifying of the bathtub water 31 is continuously performed. In this state, the platinum-iridium mixed electrode 3a serves as a cathode and the platinum electrode 3
A voltage is applied between the electrodes so that b becomes an anode,
The first electrode chamber 2a is formed by electrolysis in the diaphragm electrolytic cell 2.
And alkaline ionized water is generated in the second electrode chamber 2b. The ion water thus generated is held in the diaphragm electrolyzer 2.

[Procedure amendment 6]

[Document name to be amended] Statement

[Correction target item name] 0065

[Correction method] Change

[Correction contents]

When the bathtub water 31 is to be sterilized, first, as shown in FIG. 14, the first valve 32, the fifth valve 36, the ninth valve 4
0 is in an open state, the second valve 33, the seventh valve 38, the eighth valve 39, the tenth valve 41, and the eleventh valve 42 are in a closed state, and the circulating pump 5 operates in this state. At this time, the bath water 31 is supplied by the operation of the circulation pump 5 so that the bath water 31 flows into the inflow path 11, the electrolytic introduction path 12, the salt water tank path 13, the salt supply path 17, the second electrode chamber path 15, the second electrode chamber outlet path 21, and the ionic water bypass path. 24, Ion waterway 2
6. Circulation flow path composed of outflow path 16 and inflow path 1
1. Circulation is performed in two circulation passages of a circulation passage composed of a filtration passage 27, a filtration water passage 25, and an outflow passage 16. In the circulation flow path including the inflow path 11, the filtration flow path 27, the filtration water path 25, and the outflow path 16, the bath water 31 is purified in the filtration tank 7, as in the case of FIG. Further, sodium chloride in the salt water supply tank 4 is dissolved in the bath water 31 supplied to the salt water supply tank 4 from the salt water tank passage 13 to generate salt water, and the salt water is formed in the salt supply passage 17 and the second electrode chamber passage 15. Is supplied to the second electrode chamber 2b of the diaphragm electrolyzer 2, and the excess salt water in the second electrode chamber 2b is returned to the bathtub 1 via the first electrode chamber outlet passage 22, the ion water passage 26, and the outflow passage 16. Is done.

[Procedure amendment 7]

[Document name to be amended] Statement

[Correction target item name] 0067

[Correction method] Change

[Correction contents]

Next, after the completion of the electrolysis, as shown in FIG. 20, the second valve 33, the seventh valve 38, the first valve 32 , and the ninth valve 40
Is in an open state, the fifth valve 36, the eighth valve 39, the tenth valve 41, and the eleventh valve 42 are in a closed state. In this state, the circulating pump 5 continues to operate. At this time, the inflow channel 11 and the filtration channel 2
The circulation flow path composed of the filtration water channel 25 and the outflow channel 16 is maintained, and the purification of the bath water 31 is continued in the filtration tank 7. At this time, the inflow path 11 and the electrolysis introduction path 1
2. Via the electrolytic cell channel 30, the first electrode channel 14 enters the first electrode chamber 2a, and the second electrode chamber channel 15 enters the second electrode chamber 2a.
A water flow into which the bathtub water 31 is introduced is generated in b. The acidic ionic water in the first electrode chamber 2a is pushed out by the bathtub water 31 and reaches the ion water channel 26 via the first electrode chamber lead-out passage 22, and the alkaline ionic water in the second electrode chamber 2b is It again reaches the ion water channel 26 via the electrode chamber lead-out channel 21 and the ion water bypass channel 24, and the alkaline ion water and the acidic ion water are mixed in the ion water channel 26. This mixed water is neutral or weakly alkaline ionized water, and has a high chlorine concentration because the acidic ionized water contains chlorine at a high concentration. This mixed water is mixed with the bath water 31 after being purified in the filtration tank 7 in the outflow passage 16, supplied into the bath tub 1 through the outflow passage 16 through the outflow passage 16, and mixed with chlorine in the mixed water. Bath water 31 in 1 is sterilized. In this case, purification of bath water 31 and sterilization of bath water 31 are performed simultaneously.

[Procedure amendment 8]

[Document name to be amended] Statement

[Correction target item name] 0069

[Correction method] Change

[Correction contents]

When the bath tub water 31 is modified to have an acidic water quality, first, as shown in FIG.
6, the ninth valve 40 is open, the second valve 33, the seventh valve 38, the eighth valve 39, the tenth valve 41, and the eleventh valve 42 are closed, and the circulation pump 5 operates in this state. At this time, the bath water 31 is supplied by the operation of the circulation pump 5 so that the bath water 31 flows into the inflow path 11, the electrolytic introduction path 12, the salt water tank path 13, the salt supply path 17, the second electrode chamber path 15, the second electrode chamber outlet path 21, the ionic water bypass path. 2
4. Two circulation flow paths: a circulation flow path composed of the ion water path 26 and the outflow path 16 and a circulation flow path composed of the inflow path 11, the filtration flow path 27, the filtration water path 25, and the outflow path 16. Circulate. In the circulation flow path including the inflow path 11, the filtration flow path 27, the filtration water path 25, and the outflow path 16, the bath water 31 is purified in the filtration tank 7, as in the case of FIG. Further, sodium chloride in the salt water supply tank 4 is dissolved in the bath water 31 supplied to the salt water supply tank 4 from the salt water tank passage 13 to generate salt water, and the salt water is formed in the salt supply passage 17 and the second electrode chamber passage 15. Is supplied to the second electrode chamber 2b of the diaphragm electrolyzer 2, and the excess salt water in the second electrode chamber 2b is returned to the bathtub 1 via the first electrode chamber outlet passage 22, the ion water passage 26, and the outflow passage 16. Is done.

[Procedure amendment 9]

[Document name to be amended] Statement

[Correction target item name] 0070

[Correction method] Change

[Correction contents]

Next, as shown in FIG. 15, the first valve 32, the fifth valve 36, and the ninth valve 40 are open, the second valve 33, the seventh valve 3
The eighth, eighth, and thirty-ninth valve 41, the tenth valve 41, and the eleventh valve 42 are closed, and the circulation pump 5 continues to operate in this state.
At this time, the circulation channel constituted by the inflow channel 11, the filtration channel 27, the filtration water channel 25, and the outflow channel 16 is maintained, and the filtration tank 7 is maintained.
The purifying of the bathtub water 31 is continuously performed. In this state, the platinum-iridium mixed electrode 3a serves as the anode and the platinum electrode 3
A voltage is applied between the electrodes so that b becomes a cathode,
The first electrode chamber 2a is formed by electrolysis in the diaphragm electrolytic cell 2.
Acid ion water, alkaline ionized water to the second electrode chamber 2b is produced. Here, since the platinum-iridium mixed electrode 3a provided in the first electrode chamber 2a has a high chlorine generation efficiency, chlorine is generated efficiently in the acidic ionized water. The ion water thus generated is held in the diaphragm electrolyzer 2.

[Procedure amendment 10]

[Document name to be amended] Statement

[Correction target item name] 0072

[Correction method] Change

[Correction contents]

Next, as shown in FIG. 17, the second valve 33, the seventh valve 38, the eighth valve 39, and the eleventh valve 42 are open, and the first valve 32 , the fifth valve 36, the ninth valve 40, The tenth valve 41 is closed, and the circulation pump 5 is continuously operated in this state.
At this time, via the inflow path 11, the electrolysis introduction path 12, and the electrolytic cell path 30, the first electrode chamber path 14 into the first electrode chamber 2a,
A water flow for introducing the bath water 31 from the second electrode chamber passage 15 into the second electrode chamber 2b is generated. The acidic ionic water in the first electrode chamber 2a continues to be supplied to the bath water 31 as in the case of FIG.
To the first electrode chamber outlet passage 22 and the ion water passage 2
6. The water is supplied into the bathtub 1 from the outlet 44 via the outflow passage 16, and the water quality of the bathtub water 31 in the bathtub 1 is changed to acidic. Further, the alkaline ionized water in the second electrode chamber 2b is supplied to the second electrode chamber outlet path 21, the cleaning ion path 28, the filtration path 27.
Through the filter tank 7. The alkaline ionized water in the filtration tank 7 passes through the washing water discharge passage 23 having a low hydraulic resistance, and is discharged out of the bathtub 1 through the drainage passage 18. Here, the operation shown in FIG. 15 is directly shifted to the operation shown in FIG. 17 without performing the operation shown in FIG. 16, so that the discharge of the alkaline ionized water and the acidic ionized water from the diaphragm electrolyzer 2 is started simultaneously. You may.

[Procedure amendment 11]

[Document name to be amended] Drawing

[Correction target item name] FIG.

[Correction method] Change

[Correction contents]

FIG.

[Procedure amendment 12]

[Document name to be amended] Drawing

[Correction target item name] FIG.

[Correction method] Change

[Correction contents]

FIG. 13

[Procedure amendment 13]

[Document name to be amended] Drawing

[Correction target item name] FIG.

[Correction method] Change

[Correction contents]

FIG. 14

[Procedure amendment 14]

[Document name to be amended] Drawing

[Correction target item name] FIG.

[Correction method] Change

[Correction contents]

FIG.

[Procedure amendment 15]

[Document name to be amended] Drawing

[Correction target item name] FIG.

[Correction method] Change

[Correction contents]

FIG. 16

[Procedure amendment 16]

[Document name to be amended] Drawing

[Correction target item name] FIG.

[Correction method] Change

[Correction contents]

FIG.

[Procedure amendment 17]

[Document name to be amended] Drawing

[Correction target item name] FIG.

[Correction method] Change

[Correction contents]

FIG.

[Procedure amendment 18]

[Document name to be amended] Drawing

[Correction target item name] FIG.

[Correction method] Change

[Correction contents]

FIG.

[Procedure amendment 19]

[Document name to be amended] Drawing

[Correction target item name] FIG.

[Correction method] Change

[Correction contents]

FIG.

[Procedure amendment 20]

[Document name to be amended] Drawing

[Correction target item name] FIG.

[Correction method] Change

[Correction contents]

FIG. 21

Continued on the front page (72) Inventor Yoshihiko Ujiie 1048 Kazuma Kadoma, Kadoma City, Osaka Prefecture F-term in Matsushita Electric Works, Ltd. 4D061 DA07 DB07 DB08 EA02 EB01 EB05 EB12 EB30 ED13 FA09 FA13

Claims (10)

[Claims] 1. A diaphragm electrolytic cell, a salt water supply tank for supplying sodium chloride into one of the electrolytic chambers separated by a diaphragm in the diaphragm electrolytic cell, and a bath water for electrolysis from the bath. Bath water for supplying to the electrolytic bath and supplying one of alkaline ionic water and acidic ionic water generated by electrolysis in the electrolytic bath to the tub and discharging the other ionic water out of the tub. An apparatus for modifying water quality of bathtub water, comprising: a flow path; and a circulation pump for generating a water flow in the flow path of the bathtub water. 2. During the progress of electrolysis in a diaphragm electrolyzer, one of alkaline ionized water and acidic ionic water generated by electrolysis in the diaphragm electrolyzer is continuously supplied to the bath, 2. The bathtub water quality modifying device according to claim 1, further comprising a bathtub water flow path for discharging the other ion water out of the bathtub after the electrolysis in the diaphragm electrolyzer is completed. 3. A diaphragm electrolyzer, a salt water supply tank for supplying sodium chloride into both electrolysis chambers separated by a diaphragm in the diaphragm electrolyzer, and a bath for electrolysis from the bath. After the electrolysis in the diaphragm electrolyzer is completed, one of the alkaline ionic water and the acidic ionic water generated by electrolysis in the diaphragm electrolyzer is supplied to the bath and the other is supplied to the bath. A bathtub water quality modifying device comprising: a bathtub water flow path for discharging ionized water out of the bathtub; and a circulation pump for generating a water flow in the bathtub water flow path. 4. An operation of supplying an alkaline ionized water of an alkaline ionized water and an acidic ionized water generated by electrolysis in a diaphragm electrolyzer to a bathtub and discharging the acidic ionized water out of the bathtub; The operation of supplying both the generated alkaline ionized water and the acidic ionized water to the bath is alternately performed once each, or one operation is performed a plurality of times and the other operation is performed once. The water quality modifying device for bathtub water according to any one of claims 1 to 3. 5. A diaphragm provided with a first electrolytic chamber having a platinum-iridium mixture electrode whose surface is formed of a platinum-iridium mixture and a second electrolytic chamber having a platinum electrode whose surface is formed of platinum. Electrolyte, Platinum-Iridium mixture electrode as cathode, Platinum electrode as anode, and when electrolysis is performed, supply alkaline ionic water generated in the diaphragm electrolyzer to the bath and discharge acidic ion water out of the bath A bath water channel for supplying both alkaline ionized water and acidic ionized water generated in a diaphragm electrolytic cell when electrolysis is performed using a platinum electrode as a cathode and a platinum-iridium mixture electrode as an anode. The water quality modifying device for bathtub water according to any one of claims 1 to 4, comprising: 6. A diaphragm provided with a first electrolytic chamber having a platinum-iridium mixture electrode whose surface is formed of a platinum-iridium mixture and a second electrolytic chamber having a platinum electrode whose surface is formed of platinum. Electrolyte, Platinum-Iridium mixture electrode as cathode, Platinum electrode as anode, and when electrolysis is performed, supply alkaline ionic water generated in the diaphragm electrolyzer to the bath and discharge acidic ion water out of the bath A tub that discharges alkaline ionized water generated in a diaphragm electrolyzer when electrolysis is performed using a platinum electrode as a cathode and a platinum-iridium mixture electrode as an anode, and supplies acidic ionized water to the bathtub. The bathtub water quality modifying apparatus according to any one of claims 1 to 5, further comprising a water flow path. 7. An alkaline ionized water and an acidic ionized water generated in a diaphragm electrolyzer are supplied to a bathtub, and the other ionized water is diluted with the bathtub water and then discharged out of the bathtub. The water quality modifying device for bathtub water according to any one of claims 1 to 6, further comprising a bathtub water flow path. 8. A filter tank for purifying bath water, and bath water is supplied to the filter tank as washing water for the filter tank, and one of alkaline ionized water and acidic ionized water generated in the diaphragm electrolyzer is supplied. 8. A bathtub flow path for supplying water to the bathtub, diluting the other ionized water with the bathtub water after washing the filtration bath, and discharging the diluted bathwater to the outside of the bathtub. The water quality modifying device for bathtub water according to any one of the above. 9. The apparatus for modifying water quality of bathtub water according to claim 1, further comprising a filtration tank for purifying bathtub water. 10. A filtration tank provided with a hollow fiber membrane as a filtration membrane, and a bath water flow path for supplying acidic ionic water generated in a diaphragm electrolysis tank as washing water for the filtration tank to the filtration tank. The water quality modifying device for bathtub water according to claim 9, wherein the water quality modifying device comprises: