JP2001096278A - Bathtub water cleaning device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a bathtub water cleaning device automatically and exactly optimizing a chlorine concentration of bathtub water and being capable of comfortable bathing with an effective sterilizing work. SOLUTION: In the bathtub water cleaning device by which the bathtub water 2 in a bathtub 1 is sucked with a pump 3 and is sterilized with chlorine generated by a chlorine generation means 4, and the bathtub water 2 is returned into the bathtub 1, and is circulated, a chlorine sensor 5 for detecting a chlorine concentration in the bathtub water 2 is provided on the device, and a chlorine generation quantity by the chlorine generation means 4 is varied and controlled in accordance with the chlorine concentration detected by the chlorine sensor 5.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bathtub water purifying apparatus which circulates and purifies bathtub water in a bathtub to enable long-term use of the bathtub water.

[0002]

2. Description of the Related Art Conventionally, bathtub water in a bathtub has been sucked by a pump, the sucked bathtub water has been sterilized with chlorine generated by chlorine generating means, and the sterilized bathtub water has been again removed from the bathtub. Bath tub water purification devices that are returned to and circulated within are known. In the bathtub water purification device, a filtration means is provided in the middle of the circulation path, and a chlorine generation means is provided upstream of the filtration means, and the chlorine generation means generates chlorine at regular intervals. And returned to the bathtub through the same filtration means.

[0003] In this case, the filter means is sterilized and the bathtub water is sterilized, whereby the bathtub water is circulated and purified so that the bathtub water purification apparatus can be used for a long time without changing the bathtub water. , The propagation of harmful bacteria such as Legionella can be suppressed.

[0004]

In the households using this type of bathtub water purification apparatus, the number of persons using the bathtub and the degree of bathtub water contamination are different from each other. However, in the above-described conventional bathtub water purification device, the amount of chlorine generated by the chlorine generating means is constant, so that when a large number of people use or the degree of dirt is severe, the amount of chlorine generated is low. It may not be possible to expect a sufficient bacteriostatic effect because it is too small, and when a small number of people use it or the degree of dirt is not so bad, etc., it is said that chlorine is excessively used because it generates too much chlorine. There was a problem.

[0005] Therefore, in the above-mentioned conventional bath water purifier, the user can adjust the amount of chlorine generation by himself based on the instruction manual. The only way to know that there is too much is to make a sensory judgment based on the strong chlorine odor when the user takes a bath. In addition, in order to adjust the amount of chlorine generation to an appropriate amount, it is set appropriately according to the number of bathers, but in this case, it is necessary to manually adjust the setting, which requires cumbersome work, and It was difficult to adjust the chlorine generation amount accurately.

[0006] Here, when the amount of chlorine is adjusted by setting the number of bathers, if the load is small at home or when there is a day when bathing is not performed, chlorine may not be consumed and the chlorine may accumulate. Conceivable. In addition, in households where the load is large relative to the set amount of generated chlorine, even if chlorine is added, the remaining load consumes the chlorine, and the amount of chlorine required for bacteriostatic control is not secured, resulting in slime. And other problems. vice versa,
In a home where the load is small with respect to the set amount of generated chlorine, as described above, this may cause accumulation of chlorine or generation of chlorine odor during bathing.

SUMMARY OF THE INVENTION The present invention has been made in order to solve all the problems in the prior art described above, and an object of the present invention is to automatically and accurately set the chlorine concentration in a bathtub water to an appropriate concentration without relying on the senses. It is an object of the present invention to provide a bath tub water purification device capable of performing comfortable bathing with an effective bacteriostatic action.

[0008]

According to a first aspect of the present invention, there is provided a bathtub water purifying apparatus, wherein the bathtub water in the bathtub is sucked by a pump, and the sucked bathtub water is converted into chlorine generated by chlorine generating means. A bathtub water purification device for removing bacteria and returning the removed bathtub water to the same bathtub again so as to be circulated, comprising a chlorine sensor for detecting a chlorine concentration in the bathtub water, The amount of chlorine generated by the chlorine generating means is changed and controlled according to the chlorine concentration detected by the sensor.

Therefore, in this case, the chlorine concentration in the bathtub water is accurately detected by the chlorine sensor, and the amount of chlorine generated in the chlorine generating means is automatically changed and controlled according to the detected chlorine concentration. The chlorine concentration of bath water can be automatically and accurately adjusted to the appropriate concentration without relying on it.
A comfortable bath becomes possible with an effective bacteriostatic action.

According to a second aspect of the present invention, there is provided a bathtub water purification apparatus according to the first aspect, wherein the chlorine generated by the chlorine generating means is periodically supplied to the bathtub water. None, the chlorine concentration in the bathtub water is detected by a chlorine sensor before the chlorine injection, and when the chlorine concentration detected by the chlorine sensor is equal to or greater than a predetermined value, the chlorine generation is controlled to change to zero and the chlorine generation is controlled. It is characterized in that no input is made.

Therefore, in this case, particularly, a state in which the chlorine concentration is high before the introduction of chlorine indicates that the chlorine amount is excessive with respect to the load. Not only will it be excessive, but not only will chlorine be wasted, but it will also cause unpleasant chlorine odor during bathing. This is easily prevented by not performing the injection.

According to a third aspect of the present invention, there is provided the bathtub water purification apparatus according to the first aspect, wherein the chlorine generated by the chlorine generating means is periodically supplied to the bathtub water. None, the chlorine concentration in the bathtub water is detected by the chlorine sensor after the chlorine input, and if the chlorine concentration detected by the chlorine sensor drops to a predetermined value or less after a certain period after the input, the chlorine generation in the next chlorine input. It is characterized in that the change is controlled so as to increase the amount.

Therefore, in this case, in particular, the fact that the chlorine concentration is not maintained higher than a predetermined value (for example, 0.5 ppm) for a certain period (for example, 15 minutes) after the introduction of chlorine means that the load is excessive with respect to the chlorine amount. This indicates that the amount of chlorine is insufficient and needs to be replenished, and this is easily implemented by controlling the change so that the amount of chlorine generated in the next chlorine injection is increased. You.

According to a fourth aspect of the present invention, there is provided the bathtub water purification apparatus according to the first aspect, wherein the chlorine generated by the chlorine generating means is periodically supplied to the bathtub water. None, the chlorine concentration of the bathtub water is detected by the chlorine sensor after the chlorine input, and if the chlorine concentration detected by the chlorine sensor is equal to or higher than the predetermined upper limit even after a predetermined time after the same input, the chlorine in the next chlorine input is It is characterized in that change control is performed so as to reduce the amount of generation.

Therefore, in this case, even if a predetermined time (for example, one hour) has passed after the introduction of chlorine, the fact that the chlorine amount remains higher than a predetermined upper value (for example, 1 ppm) means that the chlorine amount is higher than the load. If the same amount of chlorine is added the next time, indicating that the amount is excessive, the amount of chlorine becomes more excessive, which not only wastes chlorine but also causes unpleasant chlorine odor during bathing. This can be easily prevented by controlling the change so that the amount of chlorine generated in the next chlorine injection is reduced.

According to a fifth aspect of the present invention, there is provided a bathtub water purification apparatus as set forth in the third or fourth aspect, wherein a plurality of control ranks having different chlorine generation amounts in the chlorine generation means are set. By selectively changing the control rank, the change in the level of chlorine generation is controlled.

Therefore, in this case, in particular, a plurality of control ranks having different chlorine generation amounts in the chlorine generation means are set, and by selectively changing the control rank, the change in the level of the chlorine generation is controlled. Therefore, the optimum amount of chlorine generated is easily changed and controlled by selecting the rank, and as a result, salt is effectively consumed without wasteful consumption of salt. Done.

According to a sixth aspect of the present invention, there is provided a bathtub water purification apparatus according to the first aspect, wherein the chlorine concentration detected by the chlorine sensor is equal to or higher than a predetermined upper value. An alert display means for displaying an alert is provided.

Therefore, in this case, in particular, the time-dependent change in the chlorine concentration after the chlorine is introduced is determined by the balance between the chlorine amount and the load amount, so that the time during which the concentration falls below a certain predetermined concentration cannot be said to be constant. Judgment is made not by the time but by the chlorine concentration detected by the chlorine sensor, and when the chlorine concentration is equal to or higher than a predetermined upper value (for example, 1 ppm), the caution display means is used to quantify a person with weak skin such as atopy. Relevant and accurate alerts are always given.

According to a seventh aspect of the present invention, there is provided a bathtub water purification apparatus according to the first aspect, wherein the pump is operated when the chlorine concentration detected by the chlorine sensor is equal to or higher than a predetermined upper limit. Will be stopped,
In this case, an error display means for displaying an error is provided.

Therefore, in this case, particularly, the chlorine concentration detected by the chlorine sensor is set to a predetermined upper limit (for example, 5 ppm).
The operation of the pump is stopped when the above is reached, so that the chlorine concentration is prevented from abnormally increasing when the above-mentioned control or other device is broken down, and is safe.
At this time, an error display by the error display means accurately calls attention to maintenance.

[0022]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows an embodiment corresponding to all of claims 1 to 7 of the present invention. In the bathtub water purification apparatus of this embodiment, a bathtub water 2 in a bathtub 1 is pumped by a pump 3. The sucked bathtub water 2 is sanitized with chlorine generated by the chlorine generating means 4, and the sanitized bathtub water 2 is returned to the bathtub 1 again to be circulated. It is a bathtub water purification device, which is provided with a chlorine sensor 5 for detecting the chlorine concentration of the bathtub water 2, and the amount of chlorine generated in the chlorine generating means 4 is changed and controlled according to the chlorine concentration detected by the chlorine sensor 5. It is something that has been done.

In the bathtub water purification device of the embodiment,
The chlorine generated by the chlorine generating means 4 is supplied to the bathtub water 2 periodically, and the chlorine concentration of the bathtub water 2 is detected by the chlorine sensor 5 before the chlorine is supplied, and the chlorine sensor 5 detects the chlorine concentration. When the chlorine concentration to be supplied is equal to or more than a predetermined value (0.5 ppm), the amount of chlorine generation is controlled so as to be zero so that the chlorine injection is not performed.

In this case, the chlorine concentration in the bathtub water 2 is detected by the chlorine sensor 5 after the chlorine is introduced, and the chlorine concentration detected by the chlorine sensor 5 becomes a predetermined value (0.5 ppm) after a certain period (15 minutes) after the introduction. ) When it falls below, the change is controlled so that the amount of chlorine generated in the next chlorine injection is increased. Further, the chlorine concentration of the bathtub water 2 is detected by the chlorine sensor 5 after the chlorine is supplied, and the chlorine concentration detected by the chlorine sensor 5 is not less than a predetermined upper value (1 ppm) even after a predetermined time (1 hour) has passed. In some cases, change control is performed so that the amount of chlorine generated in the next chlorine injection is reduced. In this case, a plurality of control ranks having different chlorine generation amounts in the chlorine generation means 4 are set, and the control rank is selectively changed to control the change in the level of the chlorine generation amount. I have.

In the bath water purifying apparatus of this embodiment, when the chlorine concentration detected by the chlorine sensor 5 is equal to or higher than a predetermined upper value (1 ppm), a caution display means (not shown) for displaying this caution. Zu). Further, the chlorine concentration detected by the chlorine sensor 5 is a predetermined upper limit (5 ppm).
In the above case, the operation of the pump 3 is stopped, and an error display means (not shown) for displaying an error in the same case is provided.

Further, the bathtub water purification apparatus of this embodiment is provided with a circulation flow path 6, one end of which has a water absorption section 7 and the other end has a water discharge section 8. The water absorbing section 7 and the water discharging section 8 are immersed in the bathtub water 2 of the bathtub 1. In this case, the water absorbing / water discharging block 9 is provided with a water absorbing part 7 and a water discharging part 8 so that the water absorbing / water discharging block 9 is immersed in the bath water 2 of the bathtub 1. Is provided with a pre-filter (not shown) for capturing hair, scale, and the like.

In the circulation channel 6, the pump 3, the main solenoid valve 10, the heater 11,
A flow sensor 12 and a chlorine sensor 5 are provided.
A bypass flow path 13 is branched from the downstream side of the pump 3 in the circulation flow path 6. In the bathtub water purification apparatus of this embodiment, the downstream end of the bypass flow path 13 is connected to the circulation flow path 6 by the water discharge section 8. However, the communication connection may be made immediately upstream or immediately downstream of the heater 11. The bypass passage 13 is provided with a filtering means 15, a filtration solenoid valve 16, and a flow rate sensor 17 in which a filter 14 is provided in order from the upstream side to the downstream side. A primary side of the filter 14 of the filtering means 15 and an upstream side of the pump 3 of the circulation flow path 6 are communicated with each other by a circulating water channel 18 for cleaning.
A drain 20 is connected via 19.

A branch passage 21 is provided downstream of the branch of the circulation passage 6 with the bypass passage 13 and upstream of the main solenoid valve 10. A downstream end of the branch passage 21 is It communicates with the bypass flow path 13 immediately upstream of the filtering means 15. The branch passage 21 is a first branch passage through a ball valve 22 on the way.
21a and a second branch 21b.
The second branch 21b is connected to the electrolytic cell 23, the second branch 21b is provided with a salt dissolving tank 24 in the middle thereof, and the downstream end is connected to the electrolytic cell 23. Are connected by the latter half of the branch passage 21. In this case, the electrolytic cell 23 and the salt dissolving tank 24 constitute the chlorine generating means 4.

In the bath water purifier of the embodiment, the bath water 2 circulates through the circulation flow path 6 and the bypass flow path 13 and is purified by the filtering means 15 in the middle of the bypass flow path 13. During the normal cleaning operation, the bathtub water 2 flows through the path of the pump 3, the bypass flow path 13, the primary side of the filter 14 of the filtering means 15, the washing circulation water path 18, and the pump 3 and the same.
Washing, and then a filter washing operation for discharging the drained water after washing from the drainage channel 20 to the outside, a circulation flow washing operation for flowing the cleaning liquid only through the circulation flow passage 6 for cleaning, During the flow in the passage 13, a bacteriostatic operation is performed in which chlorine generated by the chlorine generating means 4 is injected into the bathtub water 2 on the upstream side of the filtering means 15.

Each of these operations is automatically controlled for 24 hours by control means (not shown) built in the control panel, and the caution display means and error display means are arranged on the control panel. Established,
The change control of the chlorine generation amount in the chlorine generation means 4 is also executed by the control means. Further, in the bathtub water purification apparatus of the present embodiment, when changing the chlorine generation amount in the chlorine generation means 4, for example, the time for energizing the electrode of the electrolytic cell 23 to perform electrolysis is adjusted, Adjust the amount of salt to be supplied (that is, from the salt dissolving tank 24 to the electrolytic tank 23).
By adjusting the supply amount of the saline solution supplied to the electrolytic cell 23 and changing the target salt concentration of the electrolytic cell 23). By doing so, there is no waste of salt consumption, and the bacteria can be effectively controlled according to the number of users and the state of contamination.

By the way, in the bath water purifier of this embodiment, as shown in FIG. 2, the normal chlorine amount (free chlorine amount)
If the load and the load are in a proper balance, the chlorine concentration increases during the first three minutes when chlorine is introduced, and the organic matter is decomposed. At that time, chlorine is consumed and the concentration rapidly decreases, but after about 30 minutes, the chlorine concentration gradually decreases and hardly decreases. Further, as shown in FIG. 3, when the chlorine amount is excessive with respect to the load, the chlorine concentration decreases slowly when chlorine is introduced, and the chlorine is not consumed for a long time. Conversely, as shown in FIG. 4, when the load is excessive with respect to the chlorine amount, chlorine is consumed before diffusing, and the concentration does not increase. Such a change in the chlorine concentration at the time of chlorine input is detected and grasped by the chlorine sensor 5, and the amount of chlorine generated in the chlorine generating means 4 is changed and controlled.

Further, in the bathtub water purification apparatus of this embodiment, chlorine is supplied twice a day. Specifically, chlorine is generated at 3:30 and 15:30. The process starts. Immediately before each of 3:30 and 15:30, the chlorine concentration in the bath water 2 is measured and detected by the chlorine sensor 5. If the chlorine concentration exceeds 0.5 ppm, the chlorine is not generated this time. As mentioned above, 3:30 and 1 day a day
Chlorine is produced twice at 5:30, but at 4:40, 16:
The ball valve 22 operates for each of the 40, and chlorine is discharged to the bathtub 1 via the filtering means 15. Fifteen minutes after the time of this discharge, the chlorine concentration in the bathtub water 2 is measured and detected by the chlorine sensor 5, respectively. If the chlorine concentration is 0.5 ppm or less, the control rank of the chlorine generation amount in the next chlorine injection is shifted up by one rank. Is done. Similarly, one hour after the time of the discharge, the chlorine concentration of the bath water 2 is measured and detected by the chlorine sensor 5 and 1 pp.
If it exceeds m, the control rank of the chlorine generation amount in the next chlorine injection is shifted one rank lower.

Immediately after each chlorine input, each chlorine sensor 5
Then, the chlorine concentration of the bathtub water 2 is measured and detected, and when it is 1 ppm or more, [PP] is displayed on the caution display means of the control panel. As described above, when the concentration is 1 ppm or more immediately after the introduction, the display of [PP] is continued for 30 minutes, and after 30 minutes, the chlorine concentration is measured and detected again. If it is still 1 ppm or more, the display of [PP] is continued for 30 minutes in the same manner, and if it does not exceed 1 ppm, the display returns to the normal display state and the chlorine concentration measurement detection 30 minutes after this Is not done.

In the bath tub water purifying apparatus of this embodiment, the chlorine sensor 5 measures and detects the free chlorine concentration in the bath tub water 2 immediately before each electrolysis in which hypochlorite ions are generated twice a day. In this case, if the free chlorine concentration is, for example, the average of four times is less than 0.2 ppm, increase the next chlorine generation by 30 mg, and if it is 0.2 ppm or more, reduce the next chlorine generation by 30 mg. Also, if the concentration of free chlorine exceeds, for example, 0.4 ppm, the next chlorine generation amount 100mg
May be reduced. Depending on the amount of organic matter and water quality from the family, the set amount of generated hypochlorite ion may not be appropriate, but by doing so, the adjustment is automatically adjusted to the appropriate amount instead of manually. It is possible to easily cope with load fluctuations caused by an increase or decrease in the number of persons.
When it is absent for a day, the amount of generated hypochlorite ions can be immediately reduced, the concentration of free chlorine can be suppressed, and the generation of chlorine odor can be prevented.

Therefore, in the bathtub water purifying apparatus of the present embodiment, the chlorine concentration in the bathtub water 2 is accurately detected by the chlorine sensor 5, and the amount of chlorine generated in the chlorine generating means 4 is determined according to the detected chlorine concentration. Since the change is controlled automatically, the chlorine concentration in the bathtub water can be automatically and accurately adjusted to an appropriate concentration without relying on the senses, and comfortable bathing can be performed with an effective bacteriostatic action.

In the bath tub water purifying apparatus of the present embodiment, a state in which the chlorine concentration is high before the chlorine injection indicates that the chlorine amount is excessive with respect to the load. However, the amount of chlorine is not only excessive, but not only wastes chlorine, but also causes unpleasant chlorine odor during bathing, which is changed so that the amount of chlorine generated becomes zero. This is easily prevented by not controlling the chlorine injection under control.

In the bathtub water purifying apparatus of this embodiment, the fact that the chlorine concentration is not maintained higher than a predetermined value (for example, 0.5 ppm) for a certain period (for example, 15 minutes) after the introduction of chlorine means that the load is a chlorine amount. It indicates that the amount of chlorine is excessive, and the amount of chlorine is in short supply and needs to be replenished. Performed easily.

In the bath tub water purifying apparatus of the present embodiment, even if a predetermined time (for example, one hour) has passed after chlorine injection, the fact that the water content is still higher than a predetermined upper value (for example, 1 ppm) means that the chlorine amount is high. When the same amount of chlorine is added the next time, the amount of chlorine becomes excessive, and not only is chlorine wasted, but also an unpleasant chlorine odor during bathing. Which can cause
This is easily prevented by performing the change control so that the chlorine generation amount in the next chlorine injection is reduced.

In the bath water purifier of the present embodiment, a plurality of control ranks in which the amount of chlorine generated by the chlorine generating means 4 is different from high and low are set. Since the change in the amount of high and low amounts is controlled, the optimum amount of chlorine generation is easily changed and controlled by selecting the rank. As a result, there is no waste of salt and the salt is effectively consumed, and the number of employees is large. Despite severe dirt, reliable germ control is performed.

Further, in the bathtub water purifying apparatus of the present embodiment, the change with time of the chlorine concentration after the chlorine input is determined by the balance between the chlorine amount and the load amount. In this case, the determination is made not based on the time but on the chlorine concentration detected by the chlorine sensor 5, and when the chlorine concentration is equal to or higher than a predetermined upper value (for example, 1 ppm), the warning display means, For those who are vulnerable, quantitative and always accurate alerts are provided.

In the bath tub water purifier of this embodiment, when the chlorine concentration detected by the chlorine sensor 5 exceeds a predetermined upper limit (for example, 5 ppm), the operation of the pump 3 is stopped. It is safe to prevent the chlorine concentration from rising abnormally when the other device breaks down, etc., and at that time, an error display by the error display means accurately calls attention to maintenance. .

[0042]

As described above, in the bathtub water purifying apparatus according to the first aspect of the present invention, the amount of chlorine generated by the chlorine generating means is automatically changed according to the chlorine concentration accurately detected by the chlorine sensor. In addition, the chlorine concentration of the bathtub water can be automatically and accurately adjusted to an appropriate concentration without relying on the senses, and a comfortable bathing can be performed with an effective bacteriostatic action.

In the bath water purifying apparatus according to the second aspect of the present invention, especially when the chlorine amount is excessive with respect to the load, the chlorine is wasted or an unpleasant chlorine smell when bathing. Is controlled so that the chlorine generation amount becomes zero, and the chlorine injection is not performed this time, so that it is reliably and easily prevented.

In the bath water purifying apparatus according to the third aspect of the present invention, especially when the load is excessive with respect to the chlorine amount, the change is controlled so that the chlorine generation amount in the next chlorine injection becomes high. By doing so, the shortage of chlorine is reliably and easily replenished.

In the bath water purifying apparatus according to the fourth aspect of the present invention, particularly when the chlorine amount is excessive with respect to the load, the chlorine is wasted or the unpleasant chlorine odor at the time of bathing. Is reliably and easily prevented by controlling the change so that the chlorine generation amount in the next chlorine injection is reduced.

Further, in the bathtub water purifying apparatus according to the fifth aspect of the present invention, particularly, by selectively changing the control rank, the level of the chlorine generation is controlled to change, and the optimum chlorine generation is determined by the rank. Change can be easily controlled by selection.

In the bath water purifying apparatus according to the sixth aspect of the present invention, the determination is made not by the time but by the chlorine concentration detected by the chlorine sensor, and attention is paid when the chlorine concentration is equal to or higher than a predetermined upper value. The display means provides a quantitative and always accurate alert.

In the bath tub water purifying apparatus according to claim 7 of the present invention, the operation of the pump is stopped when the chlorine concentration detected by the chlorine sensor exceeds a predetermined upper limit.
It is safe because abnormal increase of chlorine concentration is prevented.
Maintenance is also properly prompted by the error display means.

[Brief description of the drawings]

FIG. 1 is a schematic piping diagram illustrating a bathtub water purification device according to an embodiment of the present invention.

FIG. 2 is a line graph showing a temporal change in chlorine concentration in the bathtub water purification device when the chlorine amount and the load are balanced.

FIG. 3 is a line graph showing a temporal change in chlorine concentration in the bathtub water purification device when the chlorine amount is excessive with respect to the load.

FIG. 4 is a line graph showing a change in chlorine concentration over time when the load is excessive with respect to the chlorine amount in the bathtub water purification device.

[Explanation of symbols]

 Reference Signs List 1 bathtub 2 bathtub water 3 pump 4 chlorine generating means 5 chlorine sensor

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) C02F 1/76 C02F 1/76 A G01N 27/416 G01N 27/46 316Z (72) Inventor Noriyuki Sako Osaka 1048 Kadoma-shi Kadoma, Matsushita Electric Works, Ltd.

Claims (7)

[Claims] 1. A bathtub water in a bathtub is sucked by a pump, the sucked bathtub water is sterilized by chlorine generated by chlorine generating means, and the sanitized bathtub water is returned to the bathtub again. A bathtub water purification device that is designed to be circulated and provided with a chlorine sensor that detects a chlorine concentration in the bathtub water,
A bath tub water purification apparatus wherein the amount of chlorine generated by the chlorine generating means is changed and controlled according to the chlorine concentration detected by the chlorine sensor. 2. The chlorine generated by the chlorine generating means is periodically supplied to the bathtub water, and the chlorine concentration in the bathtub water is detected by the chlorine sensor before the chlorine is supplied, and the chlorine sensor detects the chlorine concentration. 2. The bathtub water purifying apparatus according to claim 1, wherein when the chlorine concentration is equal to or higher than a predetermined value, the chlorine generation amount is controlled to change to zero so that the chlorine injection is not performed. 3. The chlorine generated by the chlorine generating means is periodically supplied to the bathtub water, and after the chlorine is supplied, the chlorine concentration in the bathtub water is detected by a chlorine sensor, and the chlorine concentration is detected by the chlorine sensor. 2. The bathtub according to claim 1, wherein when the chlorine concentration falls below a predetermined value after a certain period of time after the introduction, the change is controlled so that the amount of chlorine generated in the next chlorine introduction is increased. Water purification device. 4. The chlorine generated by the chlorine generating means is periodically charged into the bathtub water, and after the chlorine is charged, the chlorine concentration of the bathtub water is detected by a chlorine sensor, and the chlorine concentration is detected by the chlorine sensor. 2. The method according to claim 1, wherein when the chlorine concentration is equal to or higher than a predetermined upper value even after a predetermined time has passed after the same charging, the change control is performed so that the amount of chlorine generated in the next chlorine charging is reduced. Bathtub water purification equipment. 5. The method according to claim 1, wherein a plurality of control ranks having different chlorine generation amounts in the chlorine generation means are set, and the control rank is selectively changed to control the change in the level of the chlorine generation amount. The bathtub water purification device according to claim 3 or 4, wherein 6. The bathtub water purifying apparatus according to claim 1, further comprising caution display means for cautionarily displaying when the chlorine concentration detected by the chlorine sensor is equal to or higher than a predetermined upper value. 7. When the chlorine concentration detected by the chlorine sensor is equal to or higher than a predetermined upper limit, the operation of the pump is stopped, and an error display means for displaying an error in the same case is provided. The bathtub water purification device according to claim 1, wherein: