JP3210909B2 - Bathtub water purification equipment - Google Patents

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 that circulates and purifies bathtub water in a bathtub, thereby enabling long-term use of bathtub water.

[0002]

2. Description of the Related Art There has been known a bathtub water purifying apparatus which circulates hot water in a bathtub and purifies it by a filter, thereby enabling long-term use of bathtub water. In this bathtub water purification device, when the filter is clogged, there is a problem that the purification ability is reduced and bacteria grow. Therefore, it is necessary to clean the filter. Conventionally, a filter cleaning operation has been performed periodically at regular intervals during a normal purification operation in which bath water is passed through a filter to purify the filter. For example, the cleaning operation of the filter is periodically performed every 12 hours (that is, twice a day).

However, the clogged state of the filter is not constant due to the number of users and other factors. Therefore, the filter flow rate (membrane flow rate) cannot be effectively recovered only by periodically cleaning the filter. However, there is a problem that the purification ability is reduced.

[0004] Conventionally, specifications such as "Let the filter be cleaned with a detergent after a certain period of time has passed since the filter was set," Then, it is replaced. ", And the management of these periods is left to the user, and the user forgets that it is time to clean with a detergent or it is necessary to replace it. In addition, there is a problem that the user who is actually using cannot determine whether cleaning with detergent is required or whether it is time to replace the cleaning agent, and the purification ability has been reduced. There is a problem that operation is performed in the state.

[0005]

DISCLOSURE OF THE INVENTION The present invention has been made in view of the above points, and automatically displays a message indicating that the user must take care of a vehicle, and automatically stops driving when the user leaves the display. At the same time, it is possible to stop the operation with the reduced capacity, to automatically display the filter replacement time to notify the user, and to store the filter replacement count even at the time of power failure. It is an object of the present invention to provide a bathtub water purification device capable of continuing counting accurately.

[0006]

According to the present invention, there is provided a bath tub water purifying apparatus, comprising: a circulating flow for sucking and circulating bath water in a bath tub 1 by a pump 2 and returning the tub water to the bath tub 1 again; A bypass channel 3 branching from the downstream side of the pump 2 is provided in the passage 6, and a filtration tank 5 provided with a filter 4 for filtering bath water is provided in the middle of the bypass channel 3.
Primary side of filter 4 of filtration tank 5 and pump 2 of circulation channel 6
A bath tub water purification device A in which the upstream side is communicated with the cleaning circulation channel 9 and the drainage channel 11 is connected to the cleaning circulation channel 9.
A purifying operation means 31 for purifying the bath water by circulating the bath water through the circulation flow path 6 and the bypass flow path 3; It is necessary to clean the filter 4 by cleaning the filter 4 by flowing along a path of the side → the circulation water channel 9 for cleaning → the pump 2 and then to discharge the drained water after the cleaning from the drainage channel 11 to the outside. A maintenance display section 15 is provided, and a timer is provided for stopping the operation after a predetermined time has elapsed without performing maintenance after the display on the maintenance display section 15. With such a configuration, even if the user needs to be groomed, the operation is automatically stopped after a certain period of time without performing grooming, and in a state where the purification capacity remains reduced. Operation can be prevented.

Further, it is preferable to provide a filter replacement display unit for displaying the replacement time by counting the time from the setting of the filter 4 into the filtration tank 5 by a timer. With such a configuration, the user can be automatically notified that the filter needs to be replaced after a certain period of time has elapsed since the filter 4 was set.

Further, it is preferable to provide a nonvolatile memory for storing the count of a timer for replacing the filter 4 even at the time of a power failure. With such a configuration, the timer can be accurately counted and the filter
Can be automatically and accurately notified that the replacement is required.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below based on embodiments shown in the accompanying drawings.

FIG. 1 is a schematic piping diagram of a bathtub water purification apparatus A. The bathtub water purification device A is provided with a circulation flow path 6. One end of the circulation flow path 6 has a water absorption section 19, and the other end has a water discharge section 20. The water absorption section 19 and the water discharge section 20 have a bathtub. One can be immersed in bath water. In the embodiment shown in the accompanying drawings, the water absorption / water discharge block 52 is provided with a water absorption part 19 and a water discharge part 20, and the water absorption / water discharge block 52 is immersed in the bathtub water of the bathtub 1. Although not shown, the water absorbing section 19 is provided with a pre-filter for capturing hair, scale, and the like.

The circulation passage 6 has a water discharge section 2 from the water absorption section 19 side.
The pump 2, the first valve 7, and the heater 21 are provided in this order from the 0 side. A bypass flow path 3 is branched from a downstream side of the pump 2 in the circulation flow path 6, and a downstream end of the bypass flow path 3 is slightly connected to the circulation flow path 6 in the embodiment shown in FIG. Although the connection is made in the near side, the connection may be made immediately upstream or immediately downstream of the heater 21. A third valve 10, a filter tank 5 having a filter 4 therein, and a flow sensor 2 are arranged in the bypass passage 3 in order from the upstream side to the downstream side.
3, a second valve 8 is provided.

The primary side of the filter 4 in the filtration tank 5 and the upstream side of the pump 2 in the circulation flow path 6 are communicated by the cleaning circulation water passage 9, and the cleaning circulation water passage 9 is connected to the cleaning circulation water passage 9 via the fourth valve 12. Drainage channel 11 is connected.

A branch passage 24 is provided on the downstream side of the branch of the circulation passage 6 with the bypass passage 3 and on the upstream side of the first valve 7. The downstream end of the branch passage 24 has a bypass. It is connected between the third valve 10 of the flow path 3 and the filtration tank 5. The branch passage 24 branches into a first branch passage 26a and a second branch passage 26b via a fifth valve 25 on the way.
The branch path 26a is connected to the electrolytic cell 27, the second branch path 26b is provided with a salt dissolving tank 28 on the way, and the downstream end is connected to the electrolytic cell 27. The road 3 is connected to the branch passage 24 at the latter half thereof. The electrolytic cell 27 and the salt dissolving tank 28 constitute a chlorine generator B.

As shown in FIG. 3, the control means 30 controls the pump 2, the heater 21, and the valves (the first valve 7, the second valve 8, the third valve) in the bath water purifying apparatus A having the above configuration. 10, the fourth valve 12, the fifth valve 25), and various display units to be described later. The control means 30 includes a purifying operation means 31 for circulating and purifying bath water through the circulation flow path 6 and the bypass flow path 3, and a pump 4 → a bypass flow path 3 → a filter 4 of the filtration tank 5. Primary side → Circulating water channel 9 for cleaning
→ The filter 4 is washed by flowing through the path of the pump 2, and then the filter washing means 32 for discharging the drained water after washing from the drainage channel 11 to the outside, and the circulation flow for washing by flowing the washing liquid only to the circulation passage 6. A road cleaning means 33 and a chlorine water supply means 34 are provided.

FIG. 2 shows an operation panel 35 provided in the bathtub water purification apparatus A. An operation switch 36 for turning the operation on and off, and an operation lamp 36a which is turned on when the operation switch 36 is turned on. Switch 37 for turning on and off the heater 21 and a selection switch 3 for adjusting the amount of chlorine generation in accordance with the number of users (bathers).
8, a pre-filter cleaning display 39 for indicating that maintenance by cleaning the pre-filter is required as a maintenance display 15, and a bath water exchange display for displaying that bath water replacement is required. 40, a salt replenishment display section 41 for displaying that salt replenishment to the salt dissolving tank 28 is necessary, and a filter detergent cleaning display section 13 for displaying that the filter 4 needs to be cleaned with detergent, An operation switch 43 for cleaning the filter detergent, a circulation channel cleaning display section 16 for indicating that the circulation channel 6 needs to be cleaned, an operation switch 45 for cleaning the circulation channel, and a message for indicating that the filter 4 needs to be replaced. When the filter replacement display section 14 and the filter 4 are replaced, a reset switch 47 for resetting a timer and the like to be described later is provided. Display unit 48 for displaying over de in letters or figures are provided. Here, in the pre-filter cleaning display section 39, when three days have passed since the last pre-filter cleaning, a lamp is turned on to indicate that pre-filter cleaning is necessary. In addition, bath water exchange indication section 4
In the case of 0, the lamp is turned on to indicate that the bathtub water needs to be replaced after 30 days have passed since the last bathtub water replacement.

The main operation modes in the present invention include:
It has a normal circulation mode by the purification operation means 31, a filter cleaning mode by the filter cleaning means 32, a circulation flow path cleaning mode by the circulation flow path cleaning means 33, and a bacteriostatic mode by the chlorine water supply means.

In the normal circulation mode, the first valve 7, the second valve 8, and the third valve 10 are opened by the purifying operation means 31, the fourth valve 12, the fifth valve 25 are closed, and the heater is operated. 21
Is turned on and the pump 2 is turned on, so that the bathtub water in the bathtub 1 is sucked into the circulation flow path 6 from the water absorbing portion 19, and a part of the bathtub water flows to the heater 21 side, The water is heated by 21 and sent to the water discharge section 20 side, and the other bath water flows through the bypass flow path 3 and passes through the filtration tank 5 to be filtered by the filter 4 composed of a microfiltration filter such as a hollow fiber membrane. The water is sent to the water discharging section 20 side, merged and returned to the bathtub 1. In this way, the bathtub water is purified while circulating. During the operation in the normal circulation mode, the temperature of the hot water circulating on the display unit 48 is displayed, and the temperature of the bathtub water heated by the heater 21 is detected by a temperature detecting means provided in the heater 21. It is what is displayed.

Next, the filter cleaning operation includes a filter cleaning mode using bath water and a filter cleaning mode using detergent.

The filter cleaning mode using bathtub water includes a filter regular cleaning in which the operation of the filter 4 using the bathtub water is always performed at regular time intervals, and a clogging state of the filter 4 that is not less than a predetermined value by the filter 4 clogging state detecting means. When the state is detected, there is a temporary cleaning of the filter that is temporarily operated.

In both the regular cleaning of the filter and the extraordinary cleaning of the filter, the cleaning and cleaning operation is performed as shown in the flowchart of FIG. That is, the first valve 7, the second valve 8, and the fifth valve 25 are closed, the third valve 10 is opened, the fourth valve 12 is opened by the filter cleaning means 32, and the cleaning circulation water passage 9 is opened. By closing the drainage channel 11, turning off the heater 21 and turning on the pump 2 for high-speed operation, the bathtub water is pumped 2 → the bypass channel 3 → the primary side of the filter 4 of the filtration tank 5 → the circulation channel 9 for washing. → Pump 2
The filter 4 is cleaned by removing dirt, bacteria, and the like attached to the primary side of the filter 4 such as a microfiltration filter while circulating in the closed loop. This is the operation in the “filter circulation cleaning mode” indicated by reference numeral 100 in the flowchart of FIG. Here, in the case of a type in which the nozzle 50 that injects the water flowing through the bypass channel 6 in the filter tank 5 to the filter 4 injects the primary outer periphery of the filter 4 while rotating around the primary outer periphery of the filter 4, The "filter circulation cleaning mode" is operated while rotating the cleaning motor 51 for rotating the nozzle 50. After the operation in the “filter circulation cleaning mode”, the first operation is performed by the filter cleaning means 32.
, The second valve 8 and the fifth valve 25 are closed, and the third valve 10
Is opened, the fourth valve 12 is closed, the circulating water passage 9 for washing is closed, the drainage passage 11 is opened, the heater 21 is turned off, the pump 2 is turned on, and the pump 2 is operated at a low speed. The dirt, bacteria, and the like are discharged from the drainage channel 11 to the outside. This is the operation of the “drain rinsing mode” indicated by reference numeral 101 in the flowchart of FIG.

During operation in the filter cleaning mode using bath water, the display unit 48 indicates that the filter is being cleaned. For example, the display unit 48 displays "CL" (abbreviation for cleaning).

The filter cleaning mode using detergent is as follows.
When a message indicating that the filter 4 needs to be cleaned with detergent is displayed on the filter detergent cleaning display unit 13 (for example, displayed by blinking of the filter detergent cleaning display unit 13), the operation switch 43 for filter detergent cleaning is turned on. In a mode in which the water absorbing section 19 and the water discharging section 20 are arranged in the bath water in the bath tub 1 and a detergent is put in the bath tub water, or the water absorbing section 19 and the water discharging section 20 are changed to the detergent and the water. When the operation switch 43 for cleaning the filter detergent is turned on in a state in which the filter is put in the bucket, the first valve 7 and the second valve 8 are closed by the filter cleaning means 32, and the third valve 10 is opened. The circulating water passage 9 for cleaning the fourth valve 12 and the drain passage 11 are closed, and the first branch passage 2 that connects the fifth valve 25 to the electrolytic cell 27.
6a is open and the second branch passage 26 communicating with the salt dissolving tank 28
b, the heater 21 is turned off, the pump 2 is turned on, and the bath water is operated by the pump 2 → the bypass channel 3 →
Salt dissolving tank 28 → bypass channel 3 → filter 4 of filtration tank 5
Flows through the path of the primary side → the circulating water channel 9 for washing → the pump 2 and circulates through this closed loop to remove dirt, bacteria, etc. attached to the primary side of the filter 4 such as a microfiltration filter, thereby removing the detergent of the filter 4. Washing is performed. Next, the water in the bathtub 1 or the bucket containing the detergent is drained, fresh water is poured into the bathtub or the bucket, and then the first valve 7 and the second valve 8 are closed by the filter cleaning means 32. , The third valve 10 is opened, the fourth valve 12 is closed, the cleaning circulation channel 9 is closed and the drainage channel 11 is opened, and the fifth valve 25 is connected to the electrolytic cell 2.
7 is open and the salt dissolution tank 28 is open.
The second branch passage 26b communicating with the filter is closed, the heater 21 is turned off, the pump 2 is turned on, and the pump 2 is turned on to perform rinsing. It is discharged to the outside. Even in the operation of the filter cleaning mode using the detergent, in the case of the type in which the nozzle 50 rotates, the operation in the above-mentioned "filter circulation cleaning mode using the detergent" is performed while the cleaning motor 51 is rotating. During the operation in the filter circulation cleaning mode using the detergent, the display unit 48 indicates that the filter is being cleaned. For example, “CL” is displayed on the display unit 48. At the same time, the flashing filter detergent cleaning display section 13 is switched to continuous lighting, which also indicates that the filter circulation cleaning mode using detergent is in operation.

In the circulation channel washing mode, when the necessity of washing of the circulation channel 6 is displayed on the circulation channel cleaning display section 16 (for example, it is displayed by blinking of the filter detergent cleaning display section 13). ), Operation switch 4 for cleaning the circulation channel
In a mode in which the operation is performed by turning on the water bath 5, the detergent is put into the bathtub water while the water absorbing unit 19 and the water discharging unit 20 are arranged in the bathtub water in the bathtub 1, or the water absorbing unit 1 is placed in the bathtub water.
9. Put the spouting part 20 in a bucket containing detergent and water,
Thereafter, the first switch 7 and the second valve 8 are opened by the circulation channel cleaning means 33 by turning on the operation switch 45 of the circulation channel cleaning, and the third valve 10, the fourth valve 12, The fifth valve 25 is closed, the heater 21 is turned on, and the pump 2 is turned on so that the bathtub water in the bathtub 1 is drained.
The water is sucked into the circulation channel 6, and all the bathtub water passes through the heater 21 and is returned from the water discharger 20 into the bathtub 1. By repeating this circulation, the inside of the circulation channel 6 is washed with a detergent. When the washing with the detergent is completed, the water containing the detergent is drained from the bathtub 1 or the bucket, new rinsing water is put into the bathtub 1 or the bucket, and then the circulation channel 6 is similarly washed and drained. Thereby, the circulation channel can be cleaned. During the operation of the circulation channel cleaning mode, the display unit 48 indicates that the circulation channel is being cleaned. For example, “CL” is displayed on the display unit 48. In addition, the circulation channel cleaning display section 16, which has been blinking at the same time, is switched to continuous lighting, which also indicates that the operation in the circulation channel cleaning mode is being performed.

The bacteriostatic mode operation is composed of four stages of electrolytic cell water supply operation mode 102 → salt water supply operation mode 103 → electrolysis operation mode 104 → chlorine water supply operation mode 105 , as shown in the flowcharts of FIGS. Is performed in a simple operation.

That is, in the sterilization mode operation, first, FIG.
As shown in the figure, the first valve 7 and the second valve 8 are opened, the third valve 10 and the fourth valve 12 are closed, and the fifth valve
When the pump 2 is operated with the first branch 26a communicating the valve 25 with the electrolytic cell 27 open and the second branch 26b communicating with the salt dissolving tank 28 closed, the heater 21 is heated. Electrolyte bath 2
7. This is the electrolytic cell water supply operation mode 102.

Next, the first valve 7, the second valve 8, and the third valve 10 are opened by the chlorine water supply means 34, and the circulating water passage 9 for cleaning the fourth valve 12 is opened and the drainage passage 11 Closed, fifth valve 2
5 is controlled so that the first branch 26a communicating with the electrolytic tank 27 is closed and the second branch 26b communicating with the salt dissolving tank 28 is opened, and the pump 2 is operated at a low speed and the electrodes are energized. In this case, by detecting the current value between the electrodes in the electrolytic cell 27, the salt concentration in the electrolytic cell 27 is measured, and the operation of the pump 2 is jogged until the constant salt concentration is reached. The salt solution is supplied from the salt dissolving tank 28 to the electrolytic tank 27 by repeating the low-speed operation at regular intervals so that the concentration of the salt solution in the electrolytic tank 27 becomes a target. Next, the first
, The second valve 8 and the third valve 10 are opened, and the fourth valve 1 is opened.
2. Close the fifth valve 25. This is the saline solution supply operation mode 103. When the voltage in the electrolytic cell 27 is measured in the above-described saline solution supply operation mode 103 and the excessive salt is detected, an error is displayed on the display unit 48 and the operation is automatically stopped. During the saline supply operation, there is a possibility that the user may feel uneasy because the operation sound is different from that in the normal circulation mode operation. However, in the present invention, the saline supply is displayed on the display unit 48 during the saline supply operation. The display during driving is displayed so that the user can understand. Here, since the high-temperature bath water is supplied into the electrolytic cell 27 in advance by the electrolytic-water supply operation as described above, the salt solution is supplied from the salt dissolving tank 28, and the high-temperature water is supplied to the high-temperature water in the electrolytic cell 27. Even after mixing, the salt solution in the electrolytic tank 27 maintains a certain high temperature state, and effective electrolysis can be performed by electrolyzing the high temperature salt solution in the next electrolysis operation. .

Next, the pump 2 is operated at medium speed with the first valve 7, the second valve 8, and the third valve 10 opened and the fourth valve 12, fifth valve 25 closed. A current is passed between the electrodes in the electrolytic cell 2 (that is, the electrolysis is turned on) while generating chlorine in the electrolytic cell 27 while the above-described normal circulation is being performed). This electrolysis time is, for example, about one hour. This is the electrolytic operation. When the operation switch is operated in the middle of the electrolysis operation to stop the operation, first, the bathtub water is supplied from the first branch passage 26a to remove the liquid contained in the electrolysis tank 27 before the operation is stopped. The liquid is extruded into the bypass flow path 3, the liquid in the electrolytic cell 2 is replaced with bath water, and thereafter the operation is controlled by the control means so that the operation is actually stopped. In this way, even if the operation is stopped during the electrolysis, the liquid contained in the electrolytic cell 27 is pushed out of the electrolytic cell 27 to the bypass channel 3 and discharged. As a result,
When the operation is restarted, even if saline is supplied again from the salt dissolving tank to the electrolytic tank, the electrolytic tank does not become a high-concentration saline or electrolytic water, and an overcurrent flows during electrolysis. The control element for electrolysis is prevented from being destroyed.

After the chlorine is generated in the electrolytic cell 27 as described above, the first valve 7 and the second valve 8 are opened by the chlorine water supply means 34 as shown in FIG. Closed, 4th
Is closed, the first branch passage 26a connecting the fifth valve 25 to the electrolytic cell 27 is open, and the second branch connecting the salt dissolving tank 28 is opened.
By closing the branch passage 26b, turning off the heater, and operating the pump 2 at a medium speed, the chlorine water is supplied to the bathtub 1 through the bypass passage 3 through the filtration tank 5 having the filter 4 therein. Is sterilized by the chlorine water and the bath water in the bathtub 1 is sterilized. Thereafter, the pump 2 is stopped, the first valve 7, the second valve 8, and the third valve 10 are opened, and the fourth valve 12, and the fifth valve 25 are closed. The above operation mode is the chlorine water supply operation mode 10
5

As described above, the salt dissolving tank 28
When supplying the saline solution from the salt dissolving tank 28 to the electrolytic tank 27, the operation of the pump 2 is repeated at a low speed, a stop, and a low speed until the inside of the electrolytic tank 27 reaches a certain salt concentration. A saline solution is supplied into the tank 27 and the electrolytic cell 2
7, but even if the number of low-speed operations is equal to or more than a predetermined number (30 in the embodiment of FIG. 7), the target salt concentration (that is, the target salt concentration is determined by the table current value). If not, it is determined that the salt in the salt dissolving tank 28 is insufficient, and the lamp of the salt replenishment display 41 that indicates that salt replenishment to the salt dissolving tank 28 needs to be flashed. Is displayed. When the salt replenishment display section 41 is shorter than a certain time (three days in the embodiment) from the start of the blinking display, the operation returns to the normal operation. ) When the above time elapses, the electrolysis is turned off, the pump 2 stops, and the operation lamp 36
a turns off. In this case, the lamp of the salt replenishment display section 41 keeps blinking as described above. In any of the above cases, the operation switch 36 is turned off while the lamp of the salt replenishment display section 41 is blinking, and thereafter, the user replenishes the salt into the salt dissolving tank 28. When the operation switch 36 is turned off during the display of the replenishment display section 41 (that is, while the lamp of the salt replenishment display section 41 is blinking), the second branch path 26b side in which the fifth valve 25 communicates with the salt dissolving tank 28 is opened. The liquid in the salt dissolving tank 28 is drained from the side of the second branch 26b, and the water level of the salt dissolving tank 28 is lowered (by disposing the salt dissolving tank 28 in the bath tub water circulation device A at a high position, (The water level is lowered by the level difference.) When replenishing the salt by opening the lid of the upper opening of the salt dissolving tank 28, the liquid does not overflow from the upper opening of the salt dissolving tank 28, Something that won't pollute After the salt replenishment is performed as described above, when the operation switch 36 is turned on, the operation lamp 36a is turned on, the lamp of the salt replenishment display unit 41 is turned off, and the electrolytic cell initial operation mode is set.

The electrolytic cell initial operation mode is operated by the operation shown in the flow chart of FIG. 9. When the power switch is on, the operation switch 36 is turned on.
The first valve 7, the second valve 8, and the third valve 10 are opened, the fourth valve 12, and the fifth valve 25 are closed, and the pump 2 is turned on to perform a pump initial water supply operation. Next, the first valve 7, the second valve 8, and the third valve 10 are opened, the fourth valve 12 is closed, and the fifth valve 2
By operating the pump 2 in a state where the first branch passage 26a communicating the electrode 5 with the electrolytic tank 27 is open and the second branch passage 26b communicating with the salt dissolving tank 28 is closed, water is supplied into the electrolytic tank 27. Do.

Next, the first valve 7, the second valve 8, and the third valve 10 are opened, the fourth valve 12 is opened with the circulating water passage 9 for cleaning and the drain passage 11 closed, and the fifth valve is closed. The pump 2 is operated with the first branch 26a connecting the valve 25 communicating with the electrolytic cell 27 closed and the second branch 26b communicating with the salt dissolving tank 28 opened, thereby supplying water to the salt dissolving tank 28. I do. Here, by supplying water from the first branch passage 26a to the electrolytic tank 27 as described above before supplying water from the second branch passage 26b to the salt dissolving tank 28,
When the water is supplied to the salt dissolving tank 28, a large amount of the concentrated salt solution in the salt dissolving tank 28 can be prevented from flowing out to the electrolytic tank 27, and the waste of the salt is eliminated. In supplying water to the salt dissolving tank 28, in the present invention, when an electric current is applied to the electrode of the electrolytic tank 27 and the electrolytic current becomes a certain value or more, the second branch path 26b
The water supply from is stopped. With such a configuration, when water is supplied from the salt dissolving tank 28 to the electrolytic tank 27 when the power switch is turned on and after the salt dissolving tank 28 is replenished with salt, the saline solution is supplied to the electrolytic tank 27 via the salt dissolving tank 28. Flows into the electrode of the electrolytic cell 27, so that the electrolytic current becomes equal to or higher than a predetermined value, and is detected at an initial stage of the inflow of the saline solution, and the water supply from the second branch passage 26b is stopped. A large amount of saline can be prevented from entering the electrolytic tank 27 from the salt dissolving tank 28. In particular, when a power failure occurs when the saline solution is contained in the electrolytic cell 27, when the power is turned on and the initial operation is performed, a current of a certain value or more immediately flows through the electrode in the electrolytic cell 27. Is detected, the pump is stopped, and water supply from the salt dissolving tank 28 can be stopped immediately. Further, since the inside of the electrolytic cell 27 does not become a high-concentration saline solution, it is possible to prevent the salt from being wasted and to prevent an overcurrent caused by a current flowing between the electrodes to damage the electrolysis control element. Things. Further, in this case, when water is supplied from the second branch passage 26b to the salt dissolving tank 28, the pump 2 is first slightly moved several times, and then the pump 2 is operated for the time set by the timer to perform the second branch. The control means controls the supply of water from the passage 26b to the salt dissolving tank 28. That is, when the power switch is turned on and after the salt is supplied to the salt dissolving tank 28, the salt dissolving tank 28
In order to prevent a large amount of saline solution from entering the electrolytic tank 27 from the salt dissolving tank 28 when water is supplied to the electrolytic tank 27 from the above, when the saline solution is contained in the electrolytic tank 27 (for example, a power outage occurs). In the case, when the power is turned on and the initial operation is performed, the electrolytic solution is controlled so that the current value flowing through the electrode becomes equal to or more than a certain value and the pump 2 is stopped as described above. However, at this time, since the pump 2 is stopped when the pump 2 is inching, the salt dissolving tank is inert after the stop, such as when the pump 2 is stopped while the pump 2 is continuously operated. The water supply from 28 to the electrolytic cell 27 side is not continued.

Next, the first valve 7, the second valve 8, and the third valve 10 are opened, and the fourth valve 12 is opened with the cleaning circulation channel 9 open and the drain channel 11 closed. By operating the pump 2 with the first branch 26a connecting the valve 25 to the electrolytic cell 27 open and the second branch 26b communicating with the salt dissolving tank 28 closed, water is supplied into the electrolytic tank 27. Then, the water in the electrolytic cell 27 is extruded from the electrolytic cell 27 so that the electrolytic cell 27 is in a state of only bath water not containing salt water. This is because a large amount of the concentrated salt solution in the salt dissolving tank 28 flows into the electrolytic tank 27 at the time of initial water supply,
When the operation is shifted to the normal operation with the accumulated water and the electrolysis operation is performed, the electronic components may be broken because the saline solution is too concentrated. To prevent this, water was supplied from the second branch passage 26b to the salt dissolving tank 28. Later, water is supplied to the electrolytic cell 27 from the first branch passage 26a, so that the electrolytic cell 27 is made only of bath water not mixed with saline.

Next, the first valve 7, the second valve 8, and the third valve 10 are opened, the fourth valve 12, and the fifth valve 25 are closed, and the pump 2 is operated to perform normal circulation. It shifts to operation.

In the above-described example, the example of the initialization of the electrolytic cell 27 at the time of salt replenishment has been described. The initial operation of the electrolytic cell after the power switch is turned off operates as shown in the flowchart of FIG. That is, the basic operation of the initial operation of the electrolytic cell shown in FIG. 10 is the same as that of the initial operation mode of the electrolytic cell at the time of replenishing the salt. If the operation switch is turned on before entering the mode, the fourth valve 12 and the fifth valve 25 are immediately initialized, and then the electrolytic cell initial operation mode similar to the above is entered. The difference is that when the mode is ended and the operation shifts to the normal circulation operation, the electrode is aged for a fixed period of time (for example, 10 minutes) in the initial period of the normal purification operation mode. By performing the electrode aging in this manner, chlorine can be stably generated from the saline solution in the subsequent electrolytic operation. Inrush current occurs when the electrodes are reversed due to the above-mentioned aging of the electrodes.However, when the electrodes are reversed during the aging, the control is performed so that the detection of the current between the electrodes is stopped for a certain period of time. An electric current is detected, and an erroneous operation is performed based on the detection of the electric current between the electrodes by erroneously detecting that the electric current is excessively flowing between the electrodes.

In the present invention, the dirt condition of the bathtub water in the bathtub 1 in which the bathtub water purifying apparatus A of the present invention is installed differs depending on the place of use, depending on the number of users and the degree of dirt. Therefore, in the present invention, the amount of chlorine generated can be adjusted in a plurality of stages. According to the number of users and the degree of dirt, the selection switch 38 is operated to adjust the number of users and the degree of dirt. It is adjusted so that the corresponding chlorine generation amount becomes optimal. Here, in changing the amount of chlorine generation, for example, the time for conducting electrolysis by energizing the electrodes of the electrolytic cell 27 or
Or the amount of salt supplied to the electrolytic bath 27 (that is, by adjusting the supply amount of the saline solution supplied from the salt dissolving bath 28 to the electrolytic bath 27 to change the target salt concentration of the electrolytic bath 27). Is what you do. By doing so, there is no waste of salt consumption, and the bacteria can be effectively controlled in accordance with the number of users and the state of contamination.

FIG. 4 is a flowchart showing the operation of the bathtub water purification apparatus of the present invention in one day (24 hours). Note that which mode to start the day in FIG. 4 can be adjusted by setting the time.

Thus, in the present invention, the purifying operation of the bathtub water in the normal circulation mode is repeated every predetermined time within one day (four times a day in the embodiment of FIG. 4). The filter cleaning in the filter cleaning mode is set during the operation in the normal circulation mode. In this filter cleaning, the filter regular cleaning and the filter temporary cleaning are set to be alternately repeated every other time. In addition, the operation in the bacteriostatic mode is performed as described above in the electrolytic cell water supply operation mode 102 → the saline solution supply operation mode 103 →
Although the operation is divided into four stages of electrolysis operation mode 104 → chlorine water supply operation mode 105, the saline solution supply operation → electrolysis operation is performed before the above-mentioned filter regular cleaning, and the chlorine water supply operation is performed after the filter regular cleaning. It is set to be performed. That is, in the flowchart shown in FIG. 4, within one day, the normal circulation mode → (extra filter cleaning mode) → normal circulation mode → bacteriostatic mode (electrolyte tank water supply operation → saline solution supply operation → electrolysis operation operation) → filter Regular cleaning mode → Bacteria control mode (chlorine water supply operation) → Normal circulation mode → (Filter temporary cleaning mode) → Normal circulation mode → Bacteria control mode (Electrolysis tank water supply operation → Salt solution supply operation → Electrolysis operation operation) →
The operation mode is automatically switched in the order of the filter regular cleaning mode → the bacteria control mode (chlorine water supply operation), and the operation is performed.

Here, in the present invention, the operation in the filter temporary cleaning mode is a temporary operation only when the clogging state detecting means of the filter 4 detects that the filter has clogged to a certain degree or more. In the present embodiment, the flow rate sensor 23 detects the flow rate flowing through the bypass flow path 3, and when the flow rate is equal to or more than a fixed value (1.0 liter / min in the embodiment), the filter 4 is clogged more than a certain value. When the flow rate by the flow rate sensor 23 is equal to or less than a fixed value (1.0 liter / min in the embodiment), the filter 4 is regarded as not clogged, and The operation in the temporary purification mode operation is not performed.
As described above, when the clogging of the filter 4 is equal to or more than a certain value, the filter temporary cleaning mode operation is performed to automatically increase the number of times the filter 4 is washed, so that the filter 4 is more effectively washed. The bathtub water can be stably purified by the filter 4 in the normal circulation.

Further, in the present invention, after the filter regular cleaning mode ends (before the chlorine water supply operation), the control means performs the “care and display processing”. "Care / display processing" is as shown in the flowchart of FIG. That is, the timer counts the filter detergent cleaning time (for example, 30 days),
The filter replacement time is counted (for example, one year), and when the filter 4 is set in the filter tank 5 and the filter replacement time (one year) or more is reached, the filter 4 needs to be replaced. This is displayed on the filter replacement display unit 14. On the other hand, if it is one year or less, the clogged state is detected by the flow rate sensor 23 as the clogged state detecting means of the filter 4 and clogging is performed at a predetermined value or less (for example, 1.0 liter / min or more). At the time of the flow rate), it is determined that cleaning of the filter 4 with the detergent is not necessary, and the process shifts to the next normal circulation mode. On the other hand, when the clogging state is detected by the flow rate sensor 23 and the clogging is equal to or more than a predetermined value (for example, at a flow rate of 1.0 liter / min or less), if 30 days or more have elapsed, the second time Is determined, and if it is not the second time, that is, the first time, it is displayed on the filter detergent cleaning display section 13 that the filter 4 needs to be cleaned by detergent cleaning. At this time, in the embodiment shown in FIG. 5, when the detergent cleaning due to the clogging of the filter 4 is required, the circulation flow path 6 is also indicated as dirty and the cleaning is necessary on the circulation flow path cleaning display section 16 at the same time. It has become. Further, when the clogging state is detected by the flow rate sensor 23 and the clogging is equal to or more than a predetermined value (for example, when the flow rate is 1.0 liter / min or less), 30 days or more have passed, and the second time or more Is displayed on the filter replacement display section 14 that the filter 4 needs to be replaced.

Here, by flashing the lamp of the filter detergent washing display section 13, it is displayed that the filter 4 needs to be washed with detergent. When this is displayed, the user operates the operation switch 36. Turn off the bathtub 1
Alternatively, the detergent is put in the bucket, and then the operation switch 43 for cleaning the filter detergent is turned on to perform the above-described filter cleaning mode operation using the detergent. At this time, the filter detergent cleaning display section 13 is lit to indicate that the filter detergent cleaning is being performed. When the cleaning is completed, the filter detergent cleaning display section 1 is turned off, and the "30 day count" is cleared.

Although not described in the flowchart of FIG. 5, the lamp of the circulation channel cleaning display section 16 blinks to indicate that the circulation channel 6 needs to be cleaned. When this is displayed, the user turns off the operation switch 36, puts the detergent in the bathtub 1 or the bucket,
Thereafter, the operation switch 45 for cleaning the circulation channel is turned on to perform the above-described circulation channel cleaning mode operation. At this time, the circulation channel cleaning display unit 16 is lit to indicate that the circulation channel cleaning is being performed. When the cleaning is completed, the circulation channel cleaning display unit 16 is turned off, and the “30 day count” is cleared. . Here, the cleaning operation of the circulation flow path 6 includes one cleaning and two subsequent rinses, and the control time is set by a timer. The operation switch 45 for circulating channel cleaning performs the above-described operation in the first operation, but the operation switch 45 for circulating channel cleaning operates after the first operation, during the cleaning or rinsing. When the second operation of the cleaning operation switch 45 is performed, the next rinse is performed at the time of cleaning, and the second rinse is performed at the time of the first rinse.
At the time of the second rinsing, it is controlled to end. Accordingly, when the user visually determines that the bathtub 1 or the water in the bucket is clean during the cleaning of the circulation channel, and determines that the water is in a clean state during the cleaning or rinsing, as described above. By performing the second operation of the operation switch 45 for road cleaning,
The next operation can be skipped, and the cleaning time can be reduced by the user's will. In particular, when the bathtub 1 is being washed with water, the washing is performed using a large amount of water, so that the washing can be performed in a shorter time than in the case where a bucket is used. The cleaning time can be shortened.

When the lamp of the filter replacement display section 14 blinks, it is displayed that the filter 4 needs to be replaced. When this is displayed, the user turns off the operation switch 36 to turn off the filter 4. After that, the operation switch 36 is turned on, and the reset switch 47 is turned on to reset the timer. As a result, the lamp of the filter replacement display section 14 is turned off, the count of 30 days / year (365 days) is cleared, and the operation is restarted.

In the present invention, a non-volatile memory for storing a timer for counting the time for replacing the filter 4, a timer for counting bath water replacement, and a timer for counting circulation channel cleaning. A memory (EEPROM) is provided so that the timer can be accurately counted even if a power failure occurs.

In the present invention, when it is necessary to clean the filter 4 with a detergent, replace the filter 4, or clean the circulation channel 6, the maintenance display unit 15 is provided as described above. The lamps of the filter detergent cleaning display unit 13, the circulation channel cleaning display unit 16, and the filter replacement display unit 14 are displayed by blinking. After the lapse of time (that is, when the maintenance display section 15 indicates that maintenance is required, the operation switch 43 for cleaning the filter detergent, the operation switch 45 for cleaning the circulation channel, and the reset switch 47 are not operated. (After a certain period of time has elapsed), the operation is controlled to be automatically stopped by a timer. In this way, even if the user needs maintenance, the operation is automatically stopped after a certain period of time without maintenance, and the operation is not performed in a state where the purification capacity is reduced. To do so.

In the present invention, when the operation is stopped during the operation of the filter 4 in the cleaning mode, the first
, The second valve 8 and the fifth valve 25 are closed, and the third valve 10
Is opened, the fourth valve 12 is closed, the washing circulation channel 9 is closed, and the drainage channel 11 is opened, and drainage containing dirt, bacteria, and the like peeled off by washing the filter 4 is discharged from the drainage channel 11 to the outside. After the drainage is completed, the operation is controlled to be stopped. Thus, even if the operation is stopped during the operation of the filter 4 in the cleaning mode, the water in the filtration tank 5 is drained from the drainage channel 1.
By being drained from the filter 1, the dirt on the filter 4 which has been peeled off and removed can be prevented from adhering to the filter 4 again.

[0046]

According to the first aspect of the present invention, there is provided a purifying operation means for purifying bath water by circulating the bath water through a circulation flow path and a bypass flow path; Filter → primary side of the filter of the filtration tank → circulating water channel for cleaning → pump to clean the filter, and then filter cleaning means to discharge the drained water from the drainage channel to the outside, and care for the filter A necessary maintenance display section is provided, and a timer is provided to stop the operation after a certain period of time without performing maintenance after the display on the maintenance display section. If left unchecked, the operation is continued in a state where the purification performance is degraded and becomes unsanitary, so that such a situation can be avoided.

According to the second aspect of the present invention, in addition to the effects of the first aspect of the present invention, a filter replacement display for displaying a replacement time by counting with a timer from the setting of the filter in the filtration tank. Since a unit is provided, it is possible to automatically notify the user that the filter needs to be replaced after a certain period of time from the setting of the filter, and to replace the filter to stably purify the bathtub water by the filter. Is what you can do.

According to the third aspect of the present invention, in addition to the effects of the first or second aspect of the present invention, a non-volatile memory for storing a count of a timer for replacing a filter even during a power failure. Since the memory is provided, the count of the timer for replacing the filter can be stored even if a power failure occurs, so that it is possible to automatically and accurately notify that the filter needs to be replaced.

[Brief description of the drawings]

FIG. 1 is a schematic piping diagram of a bathtub water purification device of the present invention.

FIG. 2 is a front view of the same operation panel.

FIG. 3 is a control block diagram of the above.

FIG. 4 is a flowchart showing a daily operation of the bathtub water purification device.

FIG. 5 is a flowchart of an operation in a care and display processing mode according to the embodiment.

FIG. 6 is a flowchart of an operation in a filter cleaning mode according to the embodiment.

FIG. 7 is a flowchart showing an operation of an electrolytic cell water supply operation mode → a saline solution supply operation mode → an electrolysis operation mode in the sterilization mode operation of the embodiment.

FIG. 8 is a flowchart showing an operation in a chlorine water supply operation mode in the bacteriostatic mode operation.

FIG. 9 is a flowchart showing an operation of initializing the electrolytic cell at the time of salt replenishment according to the embodiment.

FIG. 10 is a flowchart showing the operation of the electrolytic cell initial operation when the operation is started at the beginning of installation of the above bathtub water purification device, when the operation is restarted at the time of a power failure, or after the power switch is turned off.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Bath tub 2 Pump 3 Bypass flow path 4 Filter 5 Filtration tank 6 Circulation flow path 9 Cleaning circulating water path 11 Drainage path 15 Maintenance display unit 31 Purification operation means 32 Filter cleaning means

────────────────────────────────────────────────── ─── Continued on the front page (51) Int.Cl. ⁷ Identification code FI C02F 1/50 531 C02F 1/50 560F 560 560Z B01D 35/02 J (72) Inventor Tsutomu Amaki 1048 Okadoma, Kadoma-shi, Osaka No. Matsushita Electric Works Co., Ltd. (72) Inventor Keiichiro Kato 207, Nagoya Matsushita Electric Works, Nagoya Matsushita Electric Works Co., Ltd. Kaihei 8-281270 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) A47K 3/00 B01D 35/027 C02F 1/46 C02F 1/50

Claims (3)

(57) [Claims] 1. A bypass flow path that branches from the downstream side of a pump is provided in a circulation flow path for sucking and circulating bath water from a bath by a pump and returning the bath water to the bath again. Providing a filtration tank equipped with a filter for filtration, the primary side of the filter of the filtration tank and the upstream side of the pump of the circulation flow path are communicated with the cleaning circulation water channel,
A bathtub water purification device in which a drainage channel is connected to a cleaning circulation channel, a purification operation means for circulating and purifying the bathtub water through a circulation channel and a bypass channel, and a bath → a bypass channel. → Primary side of filter in filter tank → Circulation channel for washing →
A filter cleaning means that flows through a path called a pump to clean the filter, and then discharges the drained water after the cleaning from the drainage channel to the outside, and a maintenance display unit that requires maintenance of the filter is provided, and after the display in the maintenance display unit, A bathtub water purification device comprising a timer for stopping operation after a certain period of time without maintenance. 2. The bathtub water purifying apparatus according to claim 1, further comprising a filter replacement display section for displaying a replacement time by counting a timer from a time when the filter is set in the filtration tank. 3. The bathtub water purifying apparatus according to claim 1, further comprising a non-volatile memory for storing a count of a timer for replacing a filter even when a power failure occurs.