JP3530446B2 - Water treatment equipment - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is stored in various water tanks, from large water tanks such as pools and bathtubs to water tanks arranged on rooftops of buildings and small water tanks such as baths for general households. The present invention relates to a novel water treatment device capable of sterilizing treated water.

[0002]

2. Description of the Related Art For example, a pool installed indoors or outdoors, a bathtub in an inn, a public bathhouse, or the like has a so-called bleaching powder to maintain its water quality. However, it is necessary to sterilize it by adding an aqueous solution of high-grade coconut powder) or sodium hypochlorite (NaClO). However, in the past, this work has been done manually by employees at pools and baths, and since the aqueous solution of bleach and sodium hypochlorite is irritating, especially when it is put in during business hours. There has been a problem that it requires a great deal of effort to perform the processing, such as having to perform the work with sufficient caution.

[0003] In particular, since chlorinated powder is a solid powder, it takes a long time to dissolve and become uniform in concentration after being charged,
During that time, there was also the problem that the pool and bathtub could not be used. In addition, in the case of a water tank placed on the rooftop of a building, or in the case of a bathtub for general household use, the current situation is that it depends only on the sterilizing power of chlorine ions contained in tap water, especially in the case of a water tank. One of the social problems is that the water quality deteriorates due to the growth of algae inside.

Further, in the case of a bathtub for general household use, it is usually considered that there is no problem in terms of water quality because the water is replaced approximately every 1 to 2 days. However, in the boiler connected to the bathtub, Since it cannot be cleaned frequently, bacteria and fungi easily proliferate, and there is a concern that the water quality will deteriorate. An object of the present invention is to provide a novel water treatment device that can easily and efficiently sterilize the water to be treated stored in the above various water tanks.

[0005]

The invention according to claim 1 is connected to a water tank for storing water to be treated,
After introducing the water to be treated from the water tank and energizing the first electrode set consisting of at least two electrode plates in the electrolytic tank provided on the way, the water is sterilized by the electrochemical reaction and then placed in the water tank. It has a water treatment path for reflux and an auxiliary electrolysis cell containing a second electrode set consisting of at least two electrode plates, branched from the water treatment path, and passed through the auxiliary electrolysis cell.
After that, the auxiliary electrolysis tank, which is formed so as to join the water treatment path again, is filled with an aqueous solution of an electrolyte containing chlorine ions and having the action of promoting the electrochemical reaction. A sterilizing solution having a sterilizing effect is produced by energizing the second electrode set to electrolyze the electrolyte, and a supply route for supplying the produced sterilizing solution to a water treatment route; A water treatment device, comprising: a water treatment route and a control unit that actuates a supply route while individually controlling the energization of the two electrode sets.

According to a second aspect of the invention, the control means is the first
2. The water treatment apparatus according to claim 1, further comprising a switching unit that controls the energization of the second electrode set by energizing one of the second electrode sets and energizing the other when the energization of one is stopped by using the same power supply device. Is. According to a third aspect of the invention, the control means stores the sterilizing liquid produced by energizing the second electrode set to electrolyze the electrolyte in the auxiliary electrolytic cell during the operation stop time of the water treatment route. Incidentally, during the operation time of the water treatment route , the stored sterilizing liquid is supplied to the water treatment route at any time through the supply route and the first electrode set is energized to sterilize the water to be treated. The water treatment apparatus according to claim 1, further comprising a time zone-dependent operation function for performing the above.

The invention according to claim 4 is connected to a water tank for storing water to be treated, and the water to be treated is introduced from the water tank,
In an electrolysis tank provided on the way, by energizing an electrode set consisting of at least two electrode plates, the water treatment path is returned to the water tank after being sterilized by an electrochemical reaction, and the electrolysis of the water treatment path is performed. Connected to the downstream side of the tank, a supply path having a storage tank, and the operation stop time zone of the water treatment path ,
Sterilization having a sterilizing action by energizing the electrode set to electrolyze the electrolyte in a state where the electrolytic bath contains chloride ions and is filled with an aqueous solution of an electrolyte having an action of promoting the electrochemical reaction. A liquid is produced, and the produced sterile liquid is stored in a storage tank without being returned to the water tank.
During the operating hours of the water treatment route, the stored sterile liquid is
A water treatment apparatus comprising: a control unit that energizes the electrode set to sterilize the water to be treated while supplying the water to the water treatment route at any time through the supply route.

[0008]

According to the structure of claim 1, first from the water tank,
The first electrode consisting of at least two electrode plates, with sodium chloride (NaCl), potassium chloride (CaCl2), hydrochloric acid (HCl), etc. added as necessary to the water to be treated introduced through the water treatment route. Energize the set.

Then, hypochlorous acid (HClO) and hypochlorite ion (C
lO ^-), or chlorine-containing compounds such as chlorine gas (Cl _2), or a very short time in the reaction process, occurs to active oxygen (O ₂ ^-) after the treatment water is sterilized, such as by,
It is returned to the water tank through the water treatment route again. (Anode side) 4H ₂ O-4e ⁻ → 4H ⁺ + O ₂ ↑ + 2H ₂ O 2Cl ⁻ → Cl ₂ + 2e ⁻ H ₂ O + Cl ₂ ⇔ HClO + H ⁺ + Cl ⁻ (Cathode side) 4H ₂ O + 4e ⁻ → 2H ₂ ↑ + 4OH ⁻ ( Anode side + cathode side) H ⁺ + OH ⁻ → H ₂ O For example, the operator manually operates a pump for circulating water through the water treatment path and energizes the first electrode set. Then, it is performed with almost no human intervention and without the operator directly touching the water to be treated. Further, the water treatment can be completely automated by automatically operating the pump and energizing the first electrode set using a timer or a residual chlorine sensor described later.

Therefore, according to the first aspect of the invention, the water to be treated stored in the water tank can be sterilized easily and efficiently. Moreover, after the sterilization treatment, the water to be recirculated to the water tank contains only extremely low concentration of ions as compared with the conventional treatment agents such as solid powder calcination or an aqueous solution of sodium hypochlorite. The above treatment can be performed regularly even during business hours such as at a pool or a bath, or arbitrarily according to the water quality of the water to be treated, which changes depending on the number of visitors, weather, temperature, and the like.

Therefore, in a pool or bath tub, it is possible to completely omit the work of sterilizing by adding chlorinated material, or to significantly reduce the number of times, and to remarkably reduce the burden on the operator. In addition, good water quality can be maintained. Further, in a water tank or the like arranged on the rooftop of a building, for example, if the above-mentioned series of work is performed manually or automatically at a certain amount of water used or at a certain period regardless of the amount of water used. It is possible to prevent the algae from growing, which is a problem, and prevent the deterioration of water quality.

Further, in a general domestic bathtub,
For example, at the end of a day's bathing or prior to draining the bath water, if the above series of operations is performed manually or automatically, bacteria and mold in the boiler connected to the bathtub, etc. It is possible to prevent the reproduction of water and prevent the deterioration of water quality. Moreover, in the structure of claim 1, the auxiliary electrolytic cell is arranged in the auxiliary electrolytic cell in a state of being filled with an aqueous solution of an electrolyte containing chlorine ions and having an action of promoting the electrochemical reaction described above. Second
Produced by electrolyzing the electrolyte by energizing the electrode set of, the hypochlorous acid or its ions, or containing a chlorine-containing compound such as chlorine gas, a sterilizing liquid having a sterilizing action, water through a supply route. It can be supplied to the processing path.

Therefore, not only can the concentration of chlorine ions in the electrolytic cell be increased to improve the efficiency of the electrochemical reaction by the first electrode group, but the second electrode group can be energized in advance to manufacture the auxiliary electrolytic cell. By supplying the sterilizing liquid stored in the water treatment path to the water treatment route at any time, the treatment capacity of the equipment can be increased according to the water quality of the treated water that changes depending on the number of visitors, weather and temperature as described above. It can be adjusted arbitrarily. Therefore, for example, even if the number of visitors increases sharply during business hours such as in a pool, the water quality can be kept almost constant, and the first electrode assembly can be suspended when the number of visitors is small. As a result, it is possible to suppress the consumption of the electrode plates forming the first electrode set.

Further, according to the second aspect of the invention, since the first and second electrode sets can be energized by using the same common power source device, the configuration of the entire device can be simplified.
It is possible to save space and reduce the cost of the device. According to the configuration of claim 3, a sterilizing solution can be produced by electrolysis by the second electrode set and stored in the auxiliary electrolytic cell by utilizing idle time of the apparatus, for example, at night. Therefore, it is possible to suppress an increase in power consumption during a time period when power conditions are likely to be tight, such as during the daytime in the summer when the pool is most prosperous, thereby contributing to stable power usage.

Moreover, the operating cost of the apparatus can be reduced by using the inexpensive electric power at night. Claim 4
According to the configuration, the sterilizing liquid, which is manufactured by energizing the electrode set in the electrolytic bath and stored in the storage tank, is used by utilizing the idle time of the apparatus such as at night. It can be supplied to the water treatment route at any time through the supply route during the operation time period of.

Therefore, as in the first aspect, the chlorine ion concentration in the electrolytic cell is increased to increase the efficiency of the electrochemical reaction by the electrode set, or the treated material is changed depending on the number of visitors, weather, temperature, etc. The processing capacity of the equipment can be adjusted arbitrarily according to the water quality, and even if the number of visitors increases rapidly during business hours such as at pools, the water quality can be kept almost constant. it can. In addition, it can contribute to stable power use by suppressing the rise in power consumption during times when power conditions are likely to be tight, such as during the daytime in summer when pools are most prosperous, and at a low cost at night. By using electric power, the operating cost of the device can be reduced.

Salt is preferable as the electrolyte used in the water treatment route according to the above-mentioned claim 1 or 4 in consideration of easiness of handling and low price.

[0019]

[0020]

[0021]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be specifically described below with reference to the drawings. FIG. 1 is a simplified view showing a structure in which a water treatment device 1 according to an embodiment of the present invention is incorporated in a large water tank 2 such as a pool or a bath tub. As shown in the figure, a large amount of water W to be treated is constantly provided in the figure by a circulation pump 23 in which a filter 21 for sand filtration and a heat exchanger 22 for heating the water to be treated are incorporated in the water tank 2. A main circulation path 20 for circulating in the direction indicated by the dashed-dotted line arrow is installed in the water treatment apparatus 1. The water treatment path 10 of the water treatment device 1 is a branch point J1 of the main circulation path 20 downstream of the filter 21. After passing through the electrolytic cell T1 in which the first electrode set E1 composed of a plurality of electrode plates E1a ... Is built in, the main circulation path 20 is re-entered at the confluence J2 on the downstream side of the heat exchanger 22. Connected to meet.

Along the way from the branch point J1 to the electrolytic cell T1 of the water treatment path 10, a stop valve B1, a pressure reducing valve B2 for reducing pressure, a circulation pump P1 for circulating the water to be treated, and a flow rate adjusting device are provided in order. A regulating valve B3, a conductivity sensor S1 for measuring the total concentration of ions in the water to be treated, a filter F1 for filtering the water to be treated, and an ion exchange resin F2 for removing ions causing scale. Has been done. Further, among the above, a drain port 10a is provided at a position between the adjusting valve B3 and the conductivity sensor S1 via the adjusting valve B4 for adjusting the flow rate and the residual chlorine sensor S2 for measuring the residual chlorine concentration. Is connected to the branch route 10b.

Due to its structure, the residual chlorine sensor S2 is arranged as described above because it is necessary to constantly keep a very small amount of water to be treated, which is smaller than the amount of water flowing through the water treatment passage 10. A stop valve B5, a circulation pump P2 for circulating the water to be treated, and a check valve B6 for preventing backflow are arranged in this order on the water treatment path 10 from the electrolytic cell T1 to the confluence J2. A pressure gauge S3 for measuring the water pressure of the water to be treated is connected between the electrolytic cell T1 and the stop valve B5.

In the illustrated example, the water treatment path 10 has an auxiliary electrolytic cell T2 containing a second electrode set E2 composed of a plurality of electrode plates E2a. The auxiliary electrolytic cell T2 has the above-mentioned auxiliary electrolytic cell T2. As described above, the second electrode set E2 is energized in a state of being filled with an aqueous solution of an electrolyte containing chloride ions and having an action of promoting an electrochemical reaction, for a certain period of time,
By electrolytically treating the electrolyte, a sterilizing solution having a sterilizing action is produced, and the produced sterilizing solution is treated with a water treatment route 10.
Is connected to a supply path 11.

Specifically, the ion exchange resin F2 and the electrolytic cell T
1 is branched from the water treatment route 10 at a position between the pressure gauge S3 and the stop valve B5 after passing through the electric valve B7, the auxiliary electrolytic cell T2, and the constant flow rate pump P3. The supply path 11 is formed so as to join the water treatment path 10 again. Of this supply path 11, the auxiliary electrolytic cell T2
On the upstream side, the electric valve B7 is opened when the amount of the sterilizing liquid in the auxiliary electrolytic cell T2 is reduced to a certain level or when the amount of the sterilizing liquid is exhausted, and the water treatment path is opened as indicated by a broken arrow in the figure. It is used for taking in the water to be treated from 10 and dissolving the electrolyte in the auxiliary electrolytic cell T2 to prepare an electrolytic solution. The motor-operated valve B7 is always closed except for the above.

A portion of the supply path 11 on the downstream side of the auxiliary electrolytic cell T2 is provided with a constant flow rate of a sterilizing solution produced by energizing the second electrode set E2 to electrolyze the electrolyte. It is used by the pump P3 to supply the water treatment path 10 at a constant flow rate as indicated by a double solid arrow in the figure. The electrolyte is supplied to the auxiliary electrolytic cell T2 by opening the motor operated valve B7 as described above, and
It may be performed each time the treated water is taken into the auxiliary electrolytic bath T2, but in the case of a solid electrolyte such as salt, a large amount of electrolyte for several times to several tens of times is supplied to the auxiliary electrolytic bath T2 in advance. Therefore, there is an advantage that the labor at the time of replenishing the electrolyte can be saved.

That is, the solid electrolyte is commensurate with the amount when the water to be treated is injected into the auxiliary electrolytic cell T2.
That is, a sufficient amount of the electrolyte is dissolved in the water to be treated, but since it is not dissolved any more and remains as a solid content, the electrolyte for several times to several tens of times is preliminarily stored in the auxiliary electrolytic cell T2 as described above. In addition to reducing the number of times of replenishment, the concentration of the aqueous solution produced by dissolving the electrolyte is almost constant as described above, although there are some differences depending on temperature. Therefore, it is not necessary to adjust the amount of the electrolyte and the like to keep the concentration constant, and it is possible to save the trouble in replenishing the electrolyte.

The electrolysis of the above-mentioned electrolyte by the second electrode set E2 proceeds in the same manner as the above-mentioned electrochemical reaction, and as a result, sterilization containing hypochlorous acid or its ion or a chlorine-containing compound such as chlorine gas is carried out. A sterile liquid with action is produced. Electrode plate E1 constituting first and second electrode sets E1 and E2
As a and E2a, for example, titanium (T
i) gold (Au), platinum (Pt),
Palladium (Pd), platinum-iridium (Pt-Ir)
A thin film of a noble metal such as that coated by a plating method or a baking treatment is used.

FIG. 2 is a block diagram showing the electrical construction of the water treatment device 1 of FIG. As shown in the figure, the water treatment device 1 serves as a control unit that operates each part of the water treatment route 10 and the supply route 11 while individually controlling the energization of the first and second electrode sets E1 and E2. The control unit 30 of FIG. The outputs of the conductivity sensor S1, the residual chlorine sensor S2, and the pressure gauge S3 are given to the control unit 30. The control unit 30 is provided with a timer 31 for defining an operating time period and an operation stop time period of the device, and a memory 32 in which initial values such as the amount of water stored in the pool 2 and the reference chlorine concentration are registered. Has been.

The control unit 30 performs the following calculation based on the outputs of the sensors S1 to S3, the time zone defined by the timer 31, and the initial value registered in the memory 32. Control signal to driver 33
Give to. Then, the driver 33, based on the given signal, outputs the energization (energization current) to the electrode sets E1 and E2.
Energization control such as energization time is performed, and each valve B1 to B5, B
7, opening and closing and adjustment, and drive control of the pumps P1 to P3.

For controlling the energization of the first and second electrode sets E1 and E2, both electrode sets E1 and E2 are energized to the other when the energization to one is stopped by using the same power supply device (not shown). Therefore, it is performed through the switching unit 34 that switches and controls energization. FIG. 3 is a flowchart showing the control contents performed by the control unit 30. The control operation of the control unit 30 will be described according to the flow of this flowchart.
When the person in charge turns on the power of the water treatment device 1, the control unit 30
Actuates the circulation pumps P1 and P2 and stops the stop valve B.
1, B5 is opened, the motor-operated valve B7 is closed, and the other valves B2 to B4 are adjusted so that the water W to be treated is supplied to the main circulation path 2
The circulation from the 0 to the water treatment route 10 and back to the main circulation route 20 via the electrolytic cell T1 is started, and the initial value registered in the memory 32 is read (step S
P1), and then the timer 31 determines whether the present time is the operation time zone or the operation stop time zone (step SP2).

If it is in the operation time zone, after confirming that the operation switch is not turned off (step SP
3), residual chlorine concentration x measured by residual chlorine sensor S2
(Ppm) is taken in (step SP4). Next, the residual chlorine concentration x taken in is compared with the reference concentration (0.5 ppm in this case) of the sterilizing liquid supply registered in the memory 32 (step SP5), and when x <0.5 ppm, , For example, during the operation stop time of the previous day, by energizing the second electrode set E2, a fixed amount of the sterilizing solution stored in the auxiliary electrolytic cell T2 is operated by operating the constant flow rate pump P3, The water is supplied to the water treatment path 10 through the supply path 11 (step SP6).

On the other hand, the residual chlorine concentration x is x ≧ 0.5 ppm
If this is the case, after skipping this step SP6, in steps SP7 to SP10, the residual chlorine concentration x is
This is also another reference concentration for output adjustment registered in the memory 32 (in this case, 0.45 ppm, 0.5 ppm,
0.55 ppm and 0.6 ppm), and according to the comparison result, in steps SP11 to SP15, the first
Output to the electrode set E1 of 100%, 75%, 50%, 2
Water to be treated W supplied into the electrolytic cell T1 through the water treatment route 10 while switching between 5% and OFF (0%)
, After performing the sterilization process by the electrochemical reaction described above,
The water is again supplied to the main circulation path 20 through the water treatment path 10 and is returned to the water tank 2 through the main circulation path 20.

The above operation is repeated during the set operating hours of the device such as the opening hours of the pool and the bathhouse. Further, when the control unit 30 determines in step SP2 that the current operation is not in operation, the control unit 30 performs a process of stopping the normal operation of each of the above-mentioned units (step SP16), and then FIG.
Then, the process shifts to the subroutine A shown in. This subroutine A
In, the control unit 30 first determines whether or not the auxiliary electrolytic cell T2 is full of water (step SP17).

If the water is not full, step SP18
Then, the motor-operated valve B7, which has been closed for a long time, is opened, and a fixed amount of water W to be treated is supplied to the auxiliary electrolytic cell T2. At this time, if the solid electrolyte is supplied to the auxiliary electrolysis tank T2 by the amount corresponding to several times to several tens of times as described above, it is almost automatically performed only by supplying the water W to be treated as described above. At the same time, a saturated aqueous solution of the electrolyte is produced. When the water is full, step SP18 is skipped.

Next, after the energization time T to the second electrode set E2 is reset to 0 (step SP19), the second electrode set E2
Energization to the electrode set E2 of (step SP2
0) After continuing the electrolysis of the electrolyte until the energization time T reaches a certain time (30 minutes in this case) (step SP21), the energization to the second electrode set E2 is stopped (step SP22). . As a result, the auxiliary electrolytic cell T2
A full dose of sterile liquid is produced.

After that, the control unit 30 proceeds to step SP23.
Then, again, it is determined whether the present time is the operation time zone or the operation stop time zone. If the operation time is the operation stop time zone, the standby is continued in this state. Normal operation control is performed again. Also step SP3
When it is confirmed that the operation switch is turned off in step S30, the control unit 30 proceeds to the subroutine B shown in FIG. 4B and performs an ending process of stopping the driving of all members (step SP24). A series of water treatment operations is completed.

FIG. 5 is a diagram showing the structure of a water treatment device 1 according to another embodiment of the present invention. Illustrated water treatment device 1
The difference from the above example is that, instead of the supply path 11 provided with the auxiliary electrolytic tank T2, the supply path 12 having the storage tank T3 is connected to the water treatment path 10 on the downstream side of the electrolytic tank T1. In point. Specifically, the water treatment path 10 is branched at a position between the pressure gauge S3 and the stop valve B5, and the delivery pump P4 and
After passing through the motor-operated valve B8, the storage tank T3, and the constant flow rate pump P5, the supply path 12 is provided so as to join the water treatment path 10 again at a position between the stop valve B5 and the circulation pump P2.
Are formed.

A portion of the supply path 12 on the upstream side of the storage tank T3 has an electrolytic cell T1 during the operation stop time of the apparatus.
A sterilizing solution produced by energizing the electrode set E1 to electrolyze the electrolyte in a state where the inside thereof is filled with an aqueous solution of an electrolyte such as salt is shown by a dashed arrow in the figure by operating the delivery pump P4. Is sent from the electrolytic cell T1 to the storage tank T3 and stored in the storage tank T3.
Are always closed except for the above.

Further, in the portion of the supply path 12 on the downstream side of the storage tank T3, the stored sterilizing liquid is kept constant by a constant flow rate pump P5 provided in the middle thereof, as indicated by a double solid line arrow in the figure. Used to feed the water treatment path 10. Since the configuration of the portion other than the supply path 12 in this example is the same as that of the previous example, the same members in the same places will be denoted by the same reference numerals and description thereof will be omitted. The electric configuration of the water treatment device 1 in FIG. 5 is such that the motor operated valve B7 is replaced by B8, the constant flow rate pump P3 is replaced by P5, the delivery pump P4 is added, and the second electrode set E2 and the switching unit 34 are connected. 2 is the same as FIG. 2 except that the (first) electrode set E1 is directly connected to the driver 33.

Further, the controller 30 of the water treatment device 1 of FIG.
3 is the same as the main routine shown in FIG. 3 and the sub-routine B for ending shown in FIG. 4 (b) is the same, and only the sub-routine A for producing the sterilizing liquid and storing it in the storage tank T3 is performed. , Are set as shown in FIG.
That is, step SP2 in the main routine of FIG.
Then, when the control unit 30 determines that it is currently in the operation stop time period, it performs a process of stopping the normal operation of each unit (step SP16), and then the subroutine A shown in FIG.
Move to.

Then, in this subroutine A, the control section 30 first determines whether or not the electrolytic cell T1 is full (step SP25). If the water is not full, in step SP26, the circulation pumps P1 and P2 are operated to supply the electrolytic tank T1 with a certain amount of water W to be treated. At the same time, the electrolyte is supplied to the electrolytic cell T1 to produce an aqueous solution of the electrolyte having a predetermined concentration (preferably saturation concentration).

When the water is full, only the electrolyte is supplied and step SP26 is skipped. Next, the electrode set E
After resetting the energization time T to 1 to 0 (step S
P27), starting energization to the electrode group E1 (step SP28), and after continuing the electrolysis of the electrolyte until the energization time T reaches a certain time (30 minutes in this case) (step SP29), The power supply to the electrode set E1 is stopped (step SP30). As a result, a sterilizing solution for one electrolytic cell T1 is manufactured.

Thereafter, the control unit 30 closes the stop valve B5,
Further, the electrically operated valve B8, which has been closed for a long time, is opened and the delivery pump P4 is operated to inject the manufactured sterilizing solution from the electrolytic cell T1 into the storage tank T3 (step SP31), and again in step SP32. It is determined whether the present time is the operation time zone or the operation stop time zone, and if it is the operation stop time zone, the standby is continued in this state, and if it is the operation time zone, the process returns to step SP1 in FIG. Operation control.

FIG. 7 is a diagram showing the configuration of a water treatment device 1 according to still another embodiment of the present invention. The difference of the water treatment apparatus 1 of the figure from the example of FIG. 1 is that instead of the supply path 11 having the auxiliary electrolysis tank T2, a storage tank T4 is provided on the upstream side of the electrolysis tank T1 of the water treatment path 10. It is at the point where the supply path 13 that it has is connected. Specifically, the water treatment path 10 is branched at a position between the ion exchange resin 12 and the electrolytic cell T1,
The supply path 13 is formed so as to reach the storage tank T4 via the constant flow pump P6.

The supply path 13 contains chlorine ions such as hypochlorite stored in the storage tank T4,
And with the action of promoting the electrochemical reaction, an aqueous solution of an electrolyte which itself has a sterilizing action,
The constant flow rate pump P6 is used to supply the water treatment path 10 at a constant flow rate as indicated by a double solid line arrow in the figure. Further, as shown by the chain double-dashed line in the figure, on the downstream side of the electrolytic cell T1 of the water treatment route 10, an aqueous solution of an electrolyte such as hypochlorite as described above is used as a sterilizing solution for the water to be treated. You may connect the 2nd supply path 14 supplied to 10.

The second supply passage 14 branches off from the water treatment passage 10 at a position between the stop valve B5 and the circulation pump P2 as shown in FIG. Is formed so as to reach a storage tank T5 that stores the aqueous solution of. Since the configuration of the portion other than the supply path 13 in this example is the same as that of the example of FIG. 1 described above, the same reference numerals are given to the same members in the same portions, and description thereof will be omitted. Further, the electrical configuration of the water treatment device 1 of FIG.
3 is replaced with P6, and the motor operated valve B7 and the second electrode set E
2 is the same as that of FIG. 2 except that 2 and the switching unit 34 are omitted and the (first) electrode set E1 is directly connected to the driver 33.

The contents of control performed by the controller 30 of the water treatment device 1 shown in FIG. 7 are as shown in FIG. 8 (a). That is, when the person in charge turns on the power of the water treatment device 1, the control unit 30 operates the circulation pumps P1 and P2, opens the stop valves B1 and B5, and other valves B2 to B4.
Is adjusted to take in the water to be treated W from the main circulation passage 20 to the water treatment passage 10 and start the circulation to return to the main circulation passage 20 via the electrolytic cell T1 and is registered in the memory 32. After reading the initial value (step SP33) and then confirming whether the operation switch is OFF (step SP34), the residual chlorine concentration x (ppm) measured by the residual chlorine sensor S2 is taken in (step SP).
35).

Next, the taken-in residual chlorine concentration x is compared with the reference concentration (0.5 ppm in this case) of the sterilizing liquid supply registered in the memory 32 (step SP36), and x
When it is <0.5 ppm, a fixed amount of an aqueous solution of an electrolyte having a sterilizing action, which is stored in the storage tank T4,
The constant flow rate pump P6 is operated to supply it to the processing path 10 through the supply path 13 (step SP37). on the other hand,
When the residual chlorine concentration x is x ≧ 0.5 ppm, after skipping this step SP37, step SP3
8 to SP41, the residual chlorine concentration x is also stored in the memory 32.
Is compared with other reference concentrations (0.45 ppm, 0.5 ppm, 0.55 ppm and 0.6 ppm in this case) for output adjustment registered in step S42 to SP46, and in accordance with the comparison result, Output to electrode set E1 is 1
00%, 75%, 50%, 25% and OFF (0%)
Electrolyzer T1 through the water treatment route 10 while switching to
After the sterilization treatment of the water W to be treated supplied therein by the above-mentioned electrochemical reaction, the water W is again supplied to the main circulation passage 20 through the water treatment passage 10 and is returned to the water tank 2 through the main circulation passage 20. .

The above operation is repeated during the operating hours of the apparatus, such as the opening hours of the pool and the bath. Then, when it is confirmed in step SP34 that the operation switch is off, the control unit 30 proceeds to the subroutine C shown in FIG. 8B and performs an ending process of stopping the driving of all the members (step S34). (SP47), a series of water treatment operations are completed.

The present invention is not limited to the embodiments described above, and various modifications can be made within the scope of the claims.

[Brief description of drawings]

FIG. 1 shows a water treatment device according to an embodiment of the present invention,
It is a figure which simplifies and shows the structure incorporated in a large-sized water tank, such as a pool and a bathtub of a bathhouse.

FIG. 2 is a block diagram showing an electrical configuration of the water treatment device of FIG.

FIG. 3 is a flowchart showing a main routine of control contents performed by a control unit.

4A and 4B are both a flowchart showing a subroutine of control contents performed by a control unit.

FIG. 5 is a simplified view showing a structure in which a water treatment device according to another embodiment of the present invention is incorporated in a large-sized water tank such as a pool or a bath tub.

FIG. 6 is a flowchart showing a subroutine of control contents performed by a control unit in the water treatment device of FIG.

FIG. 7 is a simplified view showing a structure in which a water treatment device according to still another embodiment of the present invention is incorporated in a large-sized water tank such as a pool or a bath tub.

8 (a) is a flowchart showing a main routine of control contents performed by a controller in the water treatment apparatus of FIG. 7, and FIG. 8 (b) is a flowchart showing a subroutine.

[Explanation of symbols]

1 Water treatment device 10 Water treatment route T1 electrolyzer E1 First electrode set E1a electrode plate 11 Supply route T2 auxiliary electrolyzer E2 Second electrode set E2a electrode plate 2 aquarium 30 control unit (control means) W treated water

Continuation of front page (51) Int.Cl. ⁷ Identification code FI C02F 1/50 550 C02F 1/50 550C 550D 560 560F (72) Inventor Kazushi Kawamura 2-5-5 Keihanhondori, Moriguchi-shi, Osaka Sanyo Inside the Electric Co., Ltd. (72) Inventor Minoru Nakanishi 2-5-5 Keihan Hon-dori, Moriguchi-shi, Osaka Sanyo Electric Co., Ltd. (72) In-house Yoshihiro Inamoto 2-5-5 Keihan-hondori, Moriguchi-shi, Osaka Sanyo (56) Reference JP-A-3-258392 (JP, A) JP-A-8-126889 (JP, A) JP-A-11-90440 (JP, A) JP-A-7-256264 (JP , A) JP-A-7-163982 (JP, A) JP-A-10-99614 (JP, A) JP-A-10-328668 (JP, A) JP-A-10-118654 (JP, A) (58) Fields surveyed (Int.Cl. ⁷ , DB name) C02F 1/46 C02F 1/50

Claims (4)

(57) [Claims] 1. A first electrode set comprising at least two electrode plates, which is connected to a water tank for storing water to be treated, introduces the water to be treated from the water tank, and which is provided in the middle of the electrolyzer. By energizing, after sterilization by electrochemical reaction,
A water treatment path for returning to the water tank, and an auxiliary electrolysis cell containing a second electrode set consisting of at least two electrode plates, and branching from the water treatment path,
After passing through the auxiliary electrolyzer, rejoin the water treatment route
In the state of being formed and filled with an aqueous solution of an electrolyte containing chlorine ions and having an action of promoting the electrochemical reaction, the auxiliary electrode is energized to electrolyze the electrolyte. With this, a sterilizing liquid having a sterilizing action is produced, and a supply route for supplying the produced sterilizing liquid to the water treatment route and a water treatment route while individually controlling energization of the first and second electrode sets, And a control means for activating the supply path, and a water treatment device. 2. The control means connects the first and second electrode sets to each other.
2. The water treatment apparatus according to claim 1, further comprising a switching unit for switching and controlling energization so that the other power source is energized when the one power source device is deenergized by using the same power supply device. 3. A sterilizing solution produced by electrolyzing an electrolyte by energizing a second electrode set during an operation stoppage time of the water treatment route , wherein the control means stores the sterilizing solution in an auxiliary electrolytic cell. ,
During the operating hours of the water treatment route, the stored sterilizing liquid is supplied to the water treatment route at any time through the supply route,
The water treatment device according to claim 1, wherein the water treatment device has a time zone-specific operation function of energizing the first electrode set to sterilize the water to be treated. 4. A method of connecting to a water tank for storing water to be treated, introducing the water to be treated from the water tank, and energizing an electrode set consisting of at least two electrode plates in an electrolytic cell provided on the way. in, was sterilized by an electrochemical reaction, a supply path having a water processing path for recirculating the water tank, where the water treatment path, connected to the downstream side of the electrolytic cell, a storage tank, the
During the operation stop time of the water treatment route, the electrolytic cell is electrolyzed by energizing the electrode set in a state where the electrolytic cell contains an aqueous solution of an electrolyte containing chlorine ions and having an action of promoting the electrochemical reaction. By processing, a sterilizing liquid having a sterilizing action is produced, and the produced sterilizing liquid is stored in a storage tank without being returned to the water tank, and the stored sterilizing liquid is stored during the operation time of the water treatment route. And a control means for supplying electricity to the electrode set to sterilize the water to be treated while supplying the water to the water treatment route at any time through the supply route.