JPH11108440A - Bath water purifying device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the occurrence of microbial contamination, in a bath water purifying device having a purifying unit to purify bathtub water as circulation and heat insulation is effected. SOLUTION: The presence of water is confirmed by a water level detecting part 28 to detect a water level in a bathtub 15, and when a bathtub 15 is filled with water, a storage (using) time of water is measured by a time determinating part 28a, and a time in which bath water is contaminated by bacterium is reliably announced to a user by a water replacement announcing lamp 27b. Thus, even when bath water is clean visually, the user detects a state of microbial contamination. Namely, the user is prevented from bathing in bacteriologically contaminated bathwater.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water purification apparatus for purifying bath water for business use or home use.

[0002]

2. Description of the Related Art Conventional bath water purifying apparatuses of this type include:
As shown in FIG. 3, there is a type in which bath water is maintained at a constant temperature using a gas water heater as a heat source, and a hot water purifying means using an organic matter decomposing action of microorganisms is provided (for example,
JP-A-8-5141).

In FIG. 1, reference numeral 1 denotes a gas water heater having a gas tap 2 and a water tap 3, and includes a gas burner 4, a hot water supply heat exchanger 6 for a hot water supply terminal 5, and a heat retaining heat exchanger 7 for keeping bath water warm. doing. Reference numeral 8 denotes a circulation pump that circulates hot water in the bathtub 9, and is provided in a circulation path 10 including the heat-retaining heat exchanger 7. Reference numeral 11 denotes hot water purification means for purifying bath water, and a porous microorganism propagation member 12 is provided therein. Reference numeral 13 denotes control means for controlling the gas heater 1.

[0004] In this configuration, when the hot water supply terminal 5 is opened, the control means 13 operates to open the gas tap 2 and the water tap 3, and hot water of a predetermined temperature boiled by the hot water heat exchanger is supplied from the hot water supply terminal 5. Released.

The operation of the circulating pump 8 circulates the bath water and heats the bath water to a constant temperature by the heat-retaining heat exchanger 7, and passes the microorganisms propagated on the microorganism propagation member 12 by passing through the hot water purification means 11. Ammonia and proteins contained in the bath water are decomposed to purify the bath water.

[0006]

However, in the above-mentioned conventional bath water purifying apparatus, the bath water is purified by the action of decomposing microorganisms. In the circulation path 10 and the hot water purifying means 11, microorganisms form a microbial membrane. They have their own reservations. This microbial membrane propagates not only microorganisms for purifying bath water, but also Pseudomonas aeruginosa, Escherichia coli, Legionella spp., Amoeba which is a host of Legionella spp.
Bacteriologically contaminated. However, at present, the user uses the bath water without changing the bath water if it looks beautiful. In addition, the manufacturer and distributor of the equipment are only conducting enlightenment activities to change the water if they are concerned about dirt (or periodically), and when and how can the user change the bath water? There was a problem that it was difficult to judge.

[0007]

According to the present invention, in order to solve the above-mentioned problems, a purifying unit for purifying water in a bathtub while circulating and maintaining the temperature thereof is provided with a water replacement timing notifying means.

[0008] According to the above invention, it is possible to notify the user of the water replacement time, and the user can know the water replacement time. Therefore, the user can bathe in a bacteriologically free bath by replacing the bath.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A bath water purifying apparatus according to a first aspect of the present invention has a purifying unit for purifying water in a bath tub while keeping the temperature of the bath circulated, and has a means for informing a bath tub of water replacement timing.

[0010] Then, the water replacement time informing means,
Inform the user when to change the water. In other words, the user determines the water replacement time by the water replacement time notification means, and replaces the water before the bacterial contamination of the bath water progresses. Therefore, the user can bathe in the bath water which is bacteriologically free.

In the bath water purifying apparatus according to a second aspect of the present invention, the water replacement time notifying means measures a water level in the bath tub and a water detecting unit for determining a water level in the bath tub, and determines a water replacement time. It has a timekeeping determination unit to determine and a notification unit that visually and / or audibly notifies the water replacement time determined by the timekeeping determination unit.

[0012] Then, the presence or absence of water is detected by the water detecting section, and when the water level in the bathtub becomes zero, the timer of the timer section is reset and the water storage time in the bathtub is set to zero. When a predetermined water level in the bathtub is detected, the timing determination unit starts measuring time from that point, and the water storage time in the bathtub is measured. Further, when the water storage time elapses a predetermined time set beforehand, that is, a time before the bacteria contamination, the user is notified that the water replacement time is required by the notification means. Therefore, as long as the water in the bathtub is not completely drained, the water level detection unit determines that water is stored in the bathtub, so that the time until bacterial contamination is reliably measured, and automatically before the bacterial contamination. Will be informed. Therefore, the user can recognize the bacterial contamination of the bathtub water by the notification means, and can surely drain the water to enter the bathwater free of bacterial contamination.

A bath water purifying apparatus according to a third aspect of the present invention has a function of notifying a water replacement time.

[0014] By operating the notice function, the user can be informed in advance of the bath water replacement time.
This allows the user to determine the schedule of daily activities such as cleaning time of the bathtub, reuse of the bath water in the washing machine and the like.

According to a fourth aspect of the present invention, there is provided a bath water purifying apparatus, comprising: a drain valve connected to a drain port or a downstream side of a bathtub; a drain pump for forcibly draining bath water; It has a drainage control means for automatically draining bath water by operating a drainage valve and a drainage pump.

After the water-replacement-time notifying means is activated, the drain control means opens the drain valve and operates the drain pump to forcibly drain the water in the bathtub out of the bathtub. Therefore, the water is automatically drained even if the user does not drain the water, and the user does not have to take the time to drain the water, and the time for cleaning the bathtub can be reduced.

A bath water purifying apparatus according to a fifth aspect of the present invention comprises a purifying unit for purifying water in a bathtub while circulating and maintaining the water, comprising: an aggregating means for aggregating suspended substances with an electrolytic substance to form agglomerated flocs; It has a filter medium provided downstream of the aggregating means for filtering and separating agglomerated flocs.

Then, the electrolyzed substance generated by the aggregating means is mixed with the water to be purified by circulating heat. Suspended substances contained in the water to be purified are electrochemically adsorbed with the electrolyzed substances to form large aggregated flocs. The formed flocculated floc is separated by filtration with a filter medium provided on the downstream side, and water is clarified. In particular, when the purifying means is a purifying method mainly utilizing the decomposing action of microorganisms, it takes 10 days to 2 weeks for the purifying bacteria exhibiting the purifying ability to propagate, and a good purifying performance can be obtained immediately after replacing the water. Although not required, the provision of the aggregating means makes it possible to obtain good purification performance on the same day. In addition, when a suspended substance is mechanically (physically) filtered and separated by a filter medium, dirt having a relatively small particle size such as bacteria is electrically adsorbed and enlarged to be filtered and separated by the filter medium. It becomes possible.

A bath water purifying apparatus according to a sixth aspect of the present invention is based on a signal from a water detecting section for detecting a water level in a bathtub.
When the water level falls below a predetermined value, the operation of the drain pump is controlled to be stopped.

When the drain pump discharges the bath water to the outside, the water in the bath tub gradually decreases, and finally the water level in the bath tub becomes zero. At this time, the water level detecting unit provided at the drain port of the bathtub or on the downstream side determines that the water in the bathtub has reached almost zero, and reduces the operation capacity of the drainpump to gradually stop. Therefore, the water in the bathtub can be completely drained, the idle operation of the drainage pump is prevented, and the reliability of the drainage pump can be maintained.

In the bath water purifying apparatus according to a seventh aspect of the present invention, before draining the water in the bathtub, the bath water is circulated through the purifying unit of the purifying unit for purifying the bath by circulating and maintaining the temperature in a direction opposite to the direction of the purifying. The filter means is washed with water.

Then, the water in the bathtub is passed through the filtration means in a direction opposite to that at the time of purification, and the suspended matter trapped in the filtration means is separated by the energy of the fluid flowing backward from the filtration means and discharged to the outside. Is done. Therefore, when the drainage operation is completed, no dirt serving as nutrients for the bacteria remains in the filtering means, so that it is possible to reduce the proliferation of bacteria in the filtering means. In addition, since the drained water is reused, the washing can be performed without using excess water for washing the filtering means.

The bath water purifying apparatus according to claim 8 of the present invention is provided with an automatic cleaning means including a cleaning liquid supply section and a cleaning liquid storage section, and cleans the bath tub and the circulation circuit before draining the water in the bath tub. It is controlled as follows.

Then, the cleaning liquid is sent from the cleaning liquid storage section to the circulation circuit by the cleaning supply section, and circulates in the circulation circuit. When the cleaning liquid circulates in the circulation circuit and the bathtub, the dirt attached to the circulation circuit and the inner surface of the bathtub is decomposed or peeled off by the cleaning action of the cleaning liquid. Therefore, the bathtub and the circulation circuit can be automatically cleaned without bothering the user.

According to a ninth aspect of the present invention, there is provided a water purifying apparatus.
It has a cleaning notification function to notify that the bathtub is being cleaned.

If the bathtub and the circulation circuit are being washed, the user recognizes that washing is being performed by the washing notification function.
Therefore, it is not necessary to open the lid of the bathtub to confirm that washing is being performed, and it is possible to prevent a bath from being accidentally taken during washing.

A bath water purification apparatus according to a tenth aspect of the present invention has a hot water supply means for supplying hot water to the bathtub, and controls the bathtub to be automatically filled with water after the automatic cleaning of the bathtub and the circulation circuit is completed. It was done.

After the inside of the bathtub and the circulation circuit are cleaned by the automatic cleaning means, the bathtub is automatically filled with hot water by the hot water supply means. Therefore, cleaning of the bathtub and replacement of fresh hot water can be performed automatically without bothering the user.

In the bath water purifying apparatus according to the eleventh aspect of the present invention, the bath tub water is circulated for a predetermined period of time after the bath tub is cleaned by the automatic cleaning means and the hot water is supplied by the hot water supply means, and the drain water and the hot water are further circulated at least once. It is controlled to perform the operation.

After completion of filling the bathtub, the water in the bathtub is circulated by the circulating means. When the water in the bathtub is circulated, the washing liquid component remaining in the circulation circuit is discharged into the bathtub. Further, the cleaning liquid component discharged into the bath is almost discharged to the outside by at least one drainage operation performed next. Thereafter, hot water is automatically poured into the bath tub that has been completely cleaned by the hot water supply means. Therefore, by performing rinsing subsequent to the cleaning of the bathtub and the circulation circuit, the cleaning can be performed without the cleaning liquid component remaining, and fresh hot water is applied to the bathtub. Therefore, the user can always take a comfortable bath without preparing for the bath.

A bath water purifying apparatus according to a twelfth aspect of the present invention has a bathing time zone setting function, and controls so as to perform bathing water drainage, bath tub cleaning, and filling operation other than the bathing setting time zone. It is.

By the bathing time zone setting function, drainage of bath water, bath tub washing, and hot water filling operation are performed except for the bathing time zone. Therefore, at the time of bathing, always the predetermined water level,
Temperature and water quality bath water is secured, and comfortable bathing can be realized.

[0033]

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

(Embodiment) FIG. 1 is a schematic structural view showing an operation state of a bath water purifying apparatus according to an embodiment of the present invention. In FIG. 1, reference numeral 14 denotes a circulation pump for circulating water in a bathtub 15;
Is a circulation circuit. Reference numeral 17 denotes an aggregating means provided in the circulation circuit 11, and includes a positive electrode 17a made of aluminum, a negative electrode 17b made of stainless steel, and a power supply 17c. Reference numeral 18 denotes a filtering unit provided downstream of the aggregating unit 17 for filtering agglomerated flocs obtained by aggregating suspended substances contained in circulating water. Reference numeral 19 denotes an electric heater for controlling the temperature of the circulating water, and reference numeral 20 denotes an ultraviolet lamp which is a means for sterilizing bacteria contained in the circulating water. Also 21
Is a first flow path switching valve (electrically operated three-way valve) which also functions as a drain valve, and is provided between the circulation pump 14 and the coagulation means 17. A second flow path switching valve (electrically operated three-way valve) 22 is provided between the downstream side of the filtering means 18 and the return side to the bathtub 15. A drain 23 is connected to the remaining switching direction of the first flow path switching valve 21. Further, a bypass path 24 is provided so as to connect the circulation pump 14 and the second flow path switching valve 22 so as to bypass the first flow path switching valve 21, the aggregating means 17 and the filtering means 18.

Reference numeral 25 denotes hot water supply means for generating hot water using gas, oil or electric energy for supplying fresh hot water to the bathtub 15, and is connected to the circulation circuit 16. Reference numeral 26 denotes an automatic cleaning means for cleaning the bathtub 15 and the circulation circuit 16, and is constituted by a liquid feed pump 26a as a cleaning liquid supply unit and a cleaning liquid storage unit 26a. Reference numeral 27 denotes a remote control installed in the bathroom, which includes an operation switch 27a, a water change notification lamp 27b, a washing warning display lamp 27c, a washing display lamp 27d, and a bathing time zone setting switch 27e.
Is provided. Reference numeral 28 is a controller that controls the components of the bath water circulation device, and includes a circulating heat retention function, a water replacement notification function, a cleaning notification function, a cleaning delay function, a filtering means cleaning function, a bathtub automatic cleaning function, a cleaning notification function, It controls an automatic hot water supply (hot water filling) function and a bathing time zone setting function. Reference numeral 29 denotes a water level detection unit provided on the downstream side of the bathtub discharge port 15 a of the circulation circuit 16, and sends a signal of the water level state in the bathtub 15 to a timing determination unit 28 a in the controller 28. The circulating pump 14 is used as a drain pump when switching the water circuit to drain the water in the bathtub 15.

FIG. 2 is a flowchart showing the operation of the bath water purifying apparatus. The operation will be described with reference to FIG. 1 and FIG.

First, the operation and operation at the time of filling the bathtub 15 automatically will be described. Operation switch 27a
Is turned on, the first flow path switching valve 21
And the aggregating means 17 and the second flow path switching valve 22 is connected to the bathtub 1.
The discharge side of No. 5 and the filtering means 18 are switched to a communication state, and hot water is supplied from the hot water supply means 25 to the bathtub 15. When hot water is supplied, the first flow path switching valve 21, the filtering means 18,
Bathtub 1 via electric heater 19 and second flow path switching valve 22
5 and is supplied to the bathtub 15 through the circulation pump 14, the water level detection unit 29, and the drain port of the bathtub 15. Further, in order to perform automatic hot water filling to the set water level, the supply of hot water from the hot water supply means 25 is stopped at predetermined time intervals, and hot water is filled while the water detecting section 29 detects the water level in the bathtub 15. . Further, when the filling of the water to the predetermined water level is completed, the time determination unit 28a starts measuring the water storage time (water use time) in the bathtub 15 and performs a circulation purification operation for purifying and keeping the water in the bathtub 15 warm. .

Next, the operation and action at the time of circulating purification for purifying water in the bathtub 15 by circulating heat will be described. Circulation pump 14
Is operated, as shown by the solid arrow 30, the bathtub 15
The water inside circulates in the circulation circuit 16. Further, by setting a predetermined time, the aggregating means 17 operates, that is, a current flows between the positive electrode 17a and the negative electrode 17b by the power supply 17c, and aluminum ions elute from the positive electrode 17a. When the aluminum ions are eluted, a chemical reaction occurs with water to form electrically positively charged aluminum hydroxide. In addition, since the circulating water contains suspended substances that are electrically negatively charged, they are electrically adsorbed and form aggregate flocs having a diameter of 10 μm. The formed floc is flowed downstream and is filtered by a filtering means 18 provided with a filter medium to remove (clarify) suspended substances, and is further heated by an electric heater 19 so that the inside of the bath 15 becomes a predetermined temperature. And the UV lamp 20
And returned to the bathtub 15. In this circulation purifying operation, when a predetermined time (T1) has elapsed after the operation of the circulation pump 14, the circulation pump 14 is stopped, the water circuit is switched, and the washing operation of the filtration means 18 is performed.

Next, the operation and action of the filtering means 18 during cleaning will be described. When the purifying operation is performed for a predetermined time (T1), the controller 28 causes the first flow path switching valve 21 to set the drainage path 2
3 so that the second flow path switching valve 22 communicates with the bypass path 24 and the filtration means 18.
To work. When the circulation pump 14 operates, water in the bathtub 15 flows from the drain port of the bathtub 15 to the circulation circuit 16, the circulation pump 14, the bypass passage 24, as indicated by a broken arrow 31.
After passing through the second flow path switching valve 22, it flows in from the lower side of the filtering means 18 and flows in a direction opposite to that during the filtering operation. In this case, the flocculated floc that has been separated by filtration in the filtering means 18 flows upward together with the water flow, and the first flow path switching valve 21,
The water is discharged to the outside through the drain pipe 23. In this backwashing operation, when a predetermined time (T2) has elapsed, the circulation pump 14 is stopped, the water circuit is switched, and the hot water supply means 25 performs the hot water operation to the bathtub.

Next, the operation and action when the hot water is added to the bathtub 15 will be described. When the backwashing operation is performed for a predetermined time (T2), the controller 28 causes the first flow path switching valve 21 to communicate the circulation pump 14 and the aggregating means 17, and the second flow path switching valve 2
2 is switched to a state where the discharge side of the bathtub 15 and the filtering means 18 are in communication. Further, the water level detection unit 29 detects the water level after backwashing, and calculates the required amount of added hot water up to the set water level.
From the hot water supply means 25 to the circulation circuit 1 based on the calculated amount of added hot water
The water is sent to the bath 15 through 6 and is added to a predetermined water level. When the hot water is added, the above-mentioned circulation cleaning operation and the backwashing operation of the filtering means are repeatedly performed.

Next, an operation and an action at the time of the notification of the cleaning notice and the notification of the water replacement will be described. When a predetermined time (T3), that is, a time before the bath water reaches the bacterial contamination, which has been measured by the timing determination means 28a, that is, before the bath water reaches the bacterial contamination, the controller 28 causes the remote controller 27 to display a water change notice. The lamp 27c is turned on to notify the user that the time to replace the water is approaching. After the notice is displayed,
After a predetermined time (T4), that is, when the water replacement time has elapsed, the water replacement notification lamp 27c is turned on, the circulating pump 14 is stopped, the water circuit is switched, and the backwashing operation of the filtration means 18 is performed. You will replace the water.

Next, the operation and action of the cleaning operation of the bathtub 15 and the circulation circuit 16 will be described. Water replacement notification lamp 27c
Is displayed, the controller 28 controls the circulation pump 1
4 is stopped. Further, the liquid sending pump 26a operates,
The cleaning liquid is supplied to the circulation circuit 16 from the cleaning liquid storage unit 26b. When a predetermined amount of the cleaning liquid is supplied, the liquid feed pump 26a
Is stopped, and the circulation pump 14 is operated (the electric heater 19 and the ultraviolet lamp 20 are stopped). Circulation pump 14
Is operated, the water mixed with the cleaning liquid circulates in the water circuit similar to that during the circulation purification for a predetermined time (T5) while cleaning the inside of the bathtub 15 and the circulation circuit 16. At this time, a biofilm composed of general bacteria, Legionella spp., And amoeba is formed in the circulation circuit 16, but the biofilm is cleanly cleaned by the cleaning action of the cleaning liquid and circulates together with the circulating water. If it is circulated for a predetermined time (T5) in the cleaning operation,
The circulation pump 14 is stopped, the water circuit is switched, and the operation shifts to drainage operation.

Next, the operation and operation of the bath water drainage operation will be described. When the cleaning operation is completed, the controller 28
The first flow path switching valve 21 communicates the circulation pump 14 with the drainage path 19, and the second flow path switching valve 22 switches the communication between the discharge side of the bathtub 15 and the filtration means 18, and operates the circulation pump 14. . When the circulation pump 14 is operated, water in the bathtub 14 is discharged to the outside through the drain port of the bathtub 15, the first flow switching valve of the circulation pump 14, and the drainage channel 19. When the bath water is drained and the water level in the bathtub 15 becomes extremely close to zero, the water level detector 29 detects that there is no water in the bathtub 15 and the controller 28 gradually increases the rotation speed of the motor of the circulation pump 14. Will lower it. Then circulation pump 1
4 is stopped, the water circuit is switched, and the hot water filling operation is performed.

Next, the operation and action of the rinsing operation will be described. After draining the bath water, the controller 28 performs a hot water filling operation. When the filling operation is completed, the controller 2
8, the circulation operation is performed in the same manner as the cleaning operation without supplying the cleaning liquid. At this time, the cleaning liquid and the contaminants remaining in the circulation circuit 16 and the bathtub 15 circulate together with the circulating water. This operation is performed for a predetermined time (T6). Thereafter, a drainage operation, a hot water filling operation, a washing operation of the filtration means 18 and a hot water operation are performed at least once, and a circulation cleaning operation is performed.

Further, when the bathing time zone is set by the bathing time setting switch 28e, the controller 28 controls so as not to shift to the cleaning operation. Therefore, when the bathing time period ends, the operation shifts to the cleaning operation.

When the user stops the operation switch 27a, the operation is terminated in any operation state, and the backwashing operation, the bathtub cleaning operation, the rinsing operation, and the drainage operation of the filtering means are sequentially executed and stopped.

In this embodiment, the following effects can be obtained. (1) Just by turning on the operation switch 27a, the bathtub 15 can be automatically filled with hot water, and the operation is continuously shifted to the circulating heat retention operation to perform the purifying operation, so that the user can easily prepare for bathing.

(2) Prior to the notification by the water replacement notification lamp 27b, the water replacement is notified by the water replacement notification lamp 27c, so that the bath water can be reused before bacterial contamination occurs.

(3) Since the backwashing of the filtering means 18 is automatically performed before draining the bath water, the filtering means 18 can be washed without increasing the amount of water used.

(4) By cleaning the bathtub 15 and the circulation circuit using the drained bath water, cleaning can be performed without increasing the amount of water used.

(5) Since the cleaning liquid is automatically injected by the cleaning liquid supply section 26a to clean the circulation circuit 16, the circulation circuit 16 which is difficult to clean can be cleaned.

(6) When the operation switch 27a is turned off, the operation until the cleaning of the bathtub 15 and the circulation circuit 16 is automatically performed. Therefore, even if the bathtub 15 is not used for a long period of time, it is used again. Can be used with confidence. Also, bath preparation can be performed without washing.

(7) Since the bathing time zone setting switch 27e is provided, it is possible to reliably take a bath at the set hot water temperature, water level, and water quality during the bathing time setting time zone.

[0054]

The bath water purifying apparatus according to the first aspect of the present invention has the water replacement timing notifying means, so that the user can determine and notify the water replacement timing. This allows the user to replace the bath water before the bacterial contamination of the bath water progresses. Therefore, the user can bathe in the bath water which is bacteriologically free.

A bath water purifying apparatus according to a second aspect of the present invention has a water detecting section, a timing determining section, and a notifying section, and unless the water level in the bathtub becomes zero, that is, unless the water is completely drained, the timing determining section. Do not set the timer to zero. Therefore, the time until bacterial contamination is reliably measured, and the user can be automatically notified before the bacterial contamination. Therefore, the user can take a bath in bath water free of bacterial contamination.

The bath water purifying apparatus according to the third aspect of the present invention has a notice function, and by operating the notice function, it becomes possible for the user to know in advance the timing for changing the bath water.
Therefore, the user can determine a living activity schedule such as bathtub cleaning schedule, bathwater reuse for washing and the like.

A bath water purifying apparatus according to a fourth aspect of the present invention includes a drain valve, a drain pump for draining the bath water, and a drain control means, and automatically drains the bath water after informing the water replacement timing. be able to. Therefore, the user can save the trouble of draining and can perform bathtub cleaning in a short time. The user can also avoid bathing in bacteriologically contaminated water.

A bath water purifying apparatus according to a fifth aspect of the present invention is provided with an aggregating means for aggregating a suspended substance by an electrolysis substance to form an agglomerated floc, and provided downstream of the aggregating means for filtering and separating the agglomerated floc. Suspended substances contained in the bath water having a filter medium and being circulated and purified are electrically adsorbed with the electrolysis substance to increase the size thereof, and can be separated by filtration with the filter medium. Therefore, rapid purification is possible even in the case of water containing relatively small contaminants such as bacteria.

The bath water purifying apparatus according to claim 6 of the present invention is based on a signal from a water detecting section for detecting the water level in the bathtub.
By controlling the operation of the drain pump to be stopped when the water level becomes equal to or lower than the predetermined value, the idle operation of the drain pump is prevented, and the reliability of the drain pump can be improved.

The bath water purifying apparatus according to claim 7 of the present invention is controlled so that the filtering means of the purifying unit is washed before draining the bath water. The filtration means has been washed. That is, the nutrients that cause the propagation of bacteria in the filtering means can be discharged to the outside without remaining. Therefore, even when the device is not used for a long time, it is possible to reduce the proliferation of bacteria.

The bath water purifying apparatus according to claim 8 of the present invention has an automatic cleaning means including a cleaning liquid supply section and a cleaning liquid storage section, and cleans the bath tub and the circulation circuit before draining the water in the bath tub. By performing the control, the bathtub and the circulation circuit can be automatically cleaned using the drained water and without bothering the user.

[0062] The water purifying apparatus according to claim 9 of the present invention comprises:
It has a cleaning notification function to notify that the bathtub is being cleaned, and notifies the user that the bathtub and the circulation circuit are being cleaned. In other words, the user can know that the washing is being performed by the washing notification function, and there is no need to open the bathtub to confirm that the washing is being performed. In addition, it is possible to prevent bathing during washing by mistake.

A bath water purifying apparatus according to a tenth aspect of the present invention has a hot water supply means for supplying hot water to the bathtub, and controls the bathtub to be automatically filled with water after the automatic cleaning of the bathtub and the circulation circuit is completed. Therefore, it is possible to automatically clean the bathtub and replace it with fresh hot water without bothering the user.

In the bath water purifying apparatus according to the eleventh aspect of the present invention, the bath tub water is circulated for a predetermined time after the bath tub washing by the automatic washing means and the hot water filling by the hot water supply means are completed.
It is controlled to perform the operation of drainage and hot water more than once,
Rinsing in the bathtub and circulation circuit can be performed. Therefore, the bathtub can be cleaned without leaving the cleaning liquid component in the bathtub and the circulation circuit. That is, the user can comfortably take a bath with fresh hot water or clarified hot water without preparing for bathing.

A bath water purifying apparatus according to a twelfth aspect of the present invention has a bathing time zone setting function, and controls so as to perform bathing water drainage, bathtub cleaning, and filling operation other than the bathing setting time zone. In the bathing time zone, bathing water of a predetermined water level, temperature and quality can always be secured, and comfortable bathing can be realized.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram showing an operation state of a bath water purification device according to an embodiment of the present invention.

FIG. 2 is a flowchart showing an operation state of the bath water purification device.

FIG. 3 is a schematic configuration diagram of a conventional water purification device.

[Explanation of symbols]

 Reference Signs List 14 circulation pump (drain pump) 15 bath 16 circulation circuit 17 coagulation means 17a positive electrode (aluminum) 17b positive electrode (stainless steel) 17c power supply 18 filtration means 19 electric heater 20 ultraviolet lamp 21 first flow path switching valve (drain valve) Reference Signs List 22 Second flow path switching valve 23 Drainage passage 24 Bypass passage 25 Hot water supply means 26 Cleaning liquid supply unit 26a Liquid supply pump 26b Cleaning liquid storage unit 27 Remote control 27a Operation switch 27b Water replacement notification lamp 27c Cleaning notification lamp 27d Cleaning display lamp 27e Bathing time zone setting switch 28 Controller 28a Time measuring unit 29 Water level detecting unit

──────────────────────────────────────────────────の Continuation of the front page (51) Int.Cl. ⁶ Identification code FI C02F 1/463 C02F 1/46 102 1/465 F24H 1/00 602X (72) Inventor Yuko Fujii 1006 Kadoma Oaza, Kadoma-shi, Osaka Matsushita Electric Industrial Co., Ltd.

Claims (12)

[Claims] 1. A bath water purifying apparatus comprising: a purifying unit for purifying water in a bath tub while keeping the temperature of the bath circulated; 2. A water replacement time notifying means for detecting a water level in a bathtub, a water determination unit for measuring a water storage time in the bathtub and determining a water replacement time, and a time determination unit. The bath water purifying apparatus according to claim 1, further comprising a notification unit that visually and / or audibly notifies of the water replacement time determined in (1). 3. The bath water purifying apparatus according to claim 1, further comprising a function of notifying of a time for changing water. 4. A drain valve connected to a drain port or a downstream side of a bathtub, a drain pump for forcibly draining bath water, and after notifying a water replacement time, operating the drain valve and the drain pump to automatically operate the drain valve. 4. The bath water purifying apparatus according to claim 1, further comprising a drain control means for draining the bath water. 5. A purifying unit for purifying water in a bath tub while circulating and keeping heat, a flocculating means for flocculating suspended substances to form flocculated flocs, and a flocculating floc provided downstream of said flocculating means to filter and separate flocculated flocs. The bath water purifier according to any one of claims 1 to 4, further comprising a filter medium. 6. The bath water purifying apparatus according to claim 4, wherein the operation of the circulating pump is stopped when the water level falls below a predetermined value, based on a signal from a water detecting section for detecting the water level in the bathtub. . 7. Before draining the water in the bathtub, control is performed such that the water is passed through the filtration means of the purification unit for purifying the bath water by circulating and maintaining the temperature in a direction opposite to that of the purification so as to wash the filtration means. The bath water purifying apparatus according to at least one of claims 4 to 6. 8. An automatic washing means comprising a washing liquid supply unit and a washing liquid storage unit, wherein the bath and the circulation circuit are controlled to be washed before draining the water in the bath.
A bath water purifying apparatus according to at least one of the preceding claims. 9. The bath water purifying apparatus according to claim 8, further comprising a washing notification function for notifying that the bath tub is being washed. 10. The bath water purifying apparatus according to claim 8, further comprising hot water supply means for supplying hot water to the bath tub, wherein after the automatic cleaning of the bath tub and the circulation circuit is completed, the bath tub is automatically filled with hot water. . 11. The bath tub is cleaned by an automatic cleaning means, and after the hot water is supplied by the hot water supply means, the water in the bath tub is circulated for a predetermined time, and drainage and hot water are controlled at least once. Item 11. The bath water purification device according to Item 10. 12. The bath water purifying apparatus according to claim 4, further comprising a bath time setting function, wherein the bath water is drained, the bathtub is washed, and the bathing operation is performed outside the set bath time.