JP3495680B2 - 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,
On the above-mentioned water treatment path, a water treatment path is provided in which water to be treated is introduced from the water tank and the electrode set consisting of at least two electrode plates is energized to sterilize by an electrochemical reaction and then returned to the water tank. In addition, although the water to be treated is passed through, the function of separating and removing from the water to be treated by accumulating and enlarging the fine bubbles generated by the electrochemical reaction and mixed in the water to be treated without passing through A water treatment characterized by arranging a gas-liquid separation tank whose inside is divided into a plurality of gas-liquid separation areas by a filter having a filter, and attaching the filter to the gas-liquid separation tank detachably. It is a device.

The invention according to claim 2 is the water treatment apparatus according to claim 1, further comprising control means for activating the water treatment path while controlling the energization of the electrode set. Claim 3
The invention described, in the gas-liquid separation tank, in the gas-liquid separation area on the most upstream side partitioned by the filter, while arranging a water level detection sensor for detecting the water level of the water to be treated in the area, in the control means , Based on the rising or falling speed of the water level detected by the water level detection sensor, the filter, and the water treatment route, the clogging detection unit for detecting the presence or absence of clogging in the upstream portion of the gas-liquid separation tank The water treatment device according to claim 2, wherein the water treatment device is provided.

According to a fourth aspect of the invention, in the gas-liquid separation tank,
In the gas-liquid separation area on the most downstream side divided by the filter, a water level detection sensor for detecting the water level of the water to be treated in the area is arranged, and the control means is passed from the gas-liquid separation tank through the water treatment path. When the water level detected by the water level detection sensor does not reach the predetermined water level, the water treatment route is reached until the detected water level reaches the predetermined water level in order to prevent air from being trapped in the water to be recirculated to the water tank. 3. The water treatment apparatus according to claim 2, further comprising an air bite prevention control unit that stops the flow of the water to be treated by the portion on the downstream side of the gas-liquid separation tank and restores the water level.

In the invention according to claim 5, the air clogging prevention control portion also serves as a clogging detection portion for detecting the presence or absence of clogging in a portion of the filter and the water treatment path upstream of the gas-liquid separation tank. The water treatment device according to claim 4. In the invention according to claim 6, a flow rate sensor for detecting the flow rate of the water to be treated flowing through the water treatment route is arranged on the downstream side of the gas-liquid separation tank in the water treatment route, and the flow rate sensor is provided in the control means. From the flow rate detected by
3. The water treatment apparatus according to claim 2, further comprising a filter and a clogging detection unit that detects the presence or absence of clogging in a portion of the water treatment path upstream of the gas-liquid separation tank.

According to a seventh aspect of the present invention, a pressure gauge for detecting the water pressure of the water to be treated flowing through the water treatment passage is arranged on the upstream side or the downstream side of the gas-liquid separation tank in the water treatment passage, and the control is performed. To the means, from the water pressure detected by the pressure gauge,
3. The water treatment apparatus according to claim 2, further comprising a filter and a clogging detection unit that detects the presence or absence of clogging in a portion of the water treatment path upstream of the gas-liquid separation tank.

According to the invention of claim 8, on the water treatment route,
A regulating valve for adjusting the flow rate of the treated water flowing through the water treatment route, and a connection portion to which a flow meter for measuring the flow rate of the treated water flowing through the water treatment route is connected when adjusting the flow rate by the regulating valve. The water treatment device according to claim 1, wherein the water treatment device is provided. According to a ninth aspect of the present invention, the control means automatically controls the energization of the electrode set and the operation of the water treatment route on the basis of output signals from sensors arranged on the water treatment route, 3. An automatic-manual switching unit is provided for switching between energization of the electrode set and manual operation for forcibly activating the water treatment path regardless of the output signals from the sensors. Water treatment equipment.

According to a tenth aspect of the present invention, electricity is supplied by 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 composed of at least two electrode plates. After sterilization by a chemical reaction, a water treatment path to be refluxed to the water tank, a supply path connected to the water treatment path on the downstream side of the electrode set, for supplying the sterilized liquid stored in the chemical solution tank to the water treatment path, The water treatment device is characterized by further comprising: a bypass route that branches upstream of the electrode set of the water treatment route and joins upstream of a joining portion of the supply route.

The invention according to claim 11 is characterized by comprising control means for operating the water treatment path, the supply path and the bypass path while controlling the energization of the electrode set.
0 is a water treatment device. The invention according to claim 12 is
In the control means, an electrolytic operation is performed in which the water to be treated is circulated in the water treatment route to energize the electrode set to perform sterilization, and while the water to be treated is passed in the bypass route, a sterilizing liquid is supplied from the supply route to sterilize Electrolysis for switching between medication operation for processing-
The water treatment device according to claim 11, further comprising a medication switching unit.

According to a thirteenth aspect of the present invention, the control means is configured to energize the electrode set based on output signals from sensors arranged on the water treatment route, and to control the water treatment route, the supply route and the bypass route. Automatic switching between automatic operation for automatic control of operation and manual operation for forcibly energizing the electrode set and activating the water treatment route, supply route, and bypass route independently of the output signals from the sensors The water treatment device according to claim 11, further comprising a manual switching unit.

According to a fourteenth aspect of the present invention, a main circulation path is provided in a water tank for storing water to be treated, and the water to be treated is introduced from the water tank to carry out a treatment such as sand filtration and then to return to the water tank. The water to be treated is introduced from the water tank through the main circulation path, and the electrode set consisting of at least two electrode plates is energized to sterilize by an electrochemical reaction, and then to the water tank through the main circulation path. A water treatment path for reflux is provided, and on-off valves are provided on the water treatment path at positions near the branch point from the main circulation path and near the confluence point to the main circulation path, respectively. It is a water treatment device.

According to the structure of claim 1, first from the water tank,
If necessary, sodium chloride (NaCl), calcium chloride (CaC) may be added to the water to be treated introduced through the water treatment route.
l ₂ ), hydrochloric acid (HCl) and the like are added, and the first electrode set including at least two electrode plates is energized. Then, chlorine-containing compounds such as hypochlorous acid (HClO), hypochlorite ion (ClO ⁻ ) and chlorine gas (Cl ₂ ) generated by the following electrochemical reaction, or generated for a very short time in the reaction process After the water to be treated is sterilized by active oxygen (O ₂ ⁻ ), 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 The above series of operations is to operate the equipment, and the operator directly touches the water to be treated with almost no human intervention. Done without.

Moreover, after sterilization, the water to be recirculated to the water tank contains cations, which are solid powders, or ions having a remarkably low concentration as compared with conventional treatment agents such as an aqueous solution of sodium hypochlorite. Therefore, the above treatment can be performed regularly even during business hours such as at pools and baths, or arbitrarily depending on the quality of the treated water that changes depending on the number of visitors, weather and temperature. it can. Therefore, in a pool or bath tub, etc., it is possible to omit the work of sterilizing treatment by adding chlorinated material, or to significantly reduce the number of times, while significantly reducing the burden on the operator. Good water quality can be maintained.

Further, in a water tank or the like arranged on the roof of a building, for example, the above-mentioned series of work is performed manually or automatically every fixed amount of water used, or every fixed period regardless of the amount of water used. By doing so, it is possible to prevent the algae from growing, which is a problem, and prevent the deterioration of water quality. Further, in a bathtub for general household use, for example, when the bathing for one day is completed or before draining the bath water, the above-mentioned series of work is manually performed.
Alternatively, if it is automatically performed, it is possible to suppress the growth of various bacteria and mold in the boiler connected to the bathtub and prevent the deterioration of water quality.

Further, in the structure of claim 1, fine bubbles such as hydrogen gas (H ₂ ) and oxygen gas (O ₂ ) generated by the electrochemical reaction are reliably separated from the water to be treated by the filter, Can be removed. That is, the filter allows the water to be treated to pass through,
It has a function to store the fine air bubbles mixed in the water to be treated without passing through, and this function allows the fine air bubbles stored in the partitioned gas-liquid separation area of the gas-liquid separation tank to , Which are too small to be separated from water, generate a buoyancy due to the large number of them being combined and increasing in diameter by storage, and rise from the water to be treated to the surface of the water. Then, it moves to the gas phase side on the water surface and is separated and removed from the water to be treated.

Therefore, when the water to be treated after sterilization is returned to the water tank again, it is possible to prevent the phenomenon that the water in the water tank becomes cloudy due to the fine bubbles.
It is possible to always supply clear, clean-looking water to the aquarium. Further, since the filter is detachably attached to the gas-liquid separation tank, maintenance is easy, for example, when clogging occurs due to dust mixed in the water to be treated, and the above clogging does not occur. A good condition can always be maintained.

Therefore, the filter is clogged and the water level in the gas-liquid separation tank on the upstream side of the filter becomes too high, causing water leakage, or the water level on the downstream side of the filter becomes too low, resulting in gas-liquid separation. It is possible to more reliably prevent the water in the water tank from becoming clouded due to air trapping in the water to be treated which flows back from the separation tank to the water tank through the water treatment route. Further, it is desirable that the respective parts constituting the water treatment device are integrally controlled by the control means as described in claim 2.

According to the third aspect of the invention, the degree of increase or decrease of the water level detected by the water level detection sensor arranged in the most upstream gas-liquid separation area partitioned by the filter in the gas-liquid separation tank. Therefore, the clogging detection section provided in the control means can automatically detect the presence or absence of clogging of the filter and the water treatment path on the upstream side of the gas-liquid separation tank in real time. For example, when the water level in the gas-liquid separation area on the most upstream side divided by the filter in the gas-liquid separation tank rises when the operation of the device is started, the water level detected by the water level detection sensor starts from a predetermined water level, By measuring the time required to rise to another higher water level and comparing this measured time with a preset standard time, it is possible to judge whether the rising speed of the water level is slow or slow. When the detector is configured, the presence or absence of clogging is detected as follows.

That is, when the actual measurement time is shorter than the standard time, the rising speed of the water level in the gas-liquid separation area on the most upstream side is higher than a predetermined value, so that the gas-liquid separation area on the most upstream side is supplied. It is found that the treated water thus treated does not smoothly flow into the gas-liquid separation region on the downstream side through the filter, and it can be determined that the filter is clogged. On the other hand, when the actual measurement time is longer than the standard time, the rising speed of the water level in the gas-liquid separation region on the most upstream side is slower than a predetermined value,
It can be seen that the water to be treated is not supplied to the gas-liquid separation region on the most upstream side from the upstream side of the gas-liquid separation tank in the water treatment route at a required flow rate. From this, it can be determined that clogging has occurred at the upstream side of the gas-liquid separation tank in the water treatment route, particularly at the portion such as the filter for removing organic substances.

The same applies to the case where the clogging detection unit is adapted to judge clogging by slowing down the descending speed of the water level, for example, when the operation of the apparatus is stopped. That is, at this time, when the water level in the gas-liquid separation area on the most upstream side is lowered, it is necessary for the water level detected by the water level detection sensor to increase from a predetermined water level to another water level lower than that. The measured time is measured, and this measured time is compared with a preset standard time.

When the measured time is longer than the standard time, the descending speed of the water level in the gas-liquid separation area on the most upstream side is slower than a predetermined value, so that the gas-liquid separation area on the most upstream side is supplied. It is found that the treated water thus treated does not smoothly flow into the gas-liquid separation region on the downstream side through the filter, and it can be determined that the filter is clogged. On the other hand, if the actual measurement time is shorter than the standard time, the descending speed of the water level in the gas-liquid separation region on the most upstream side will be faster than a predetermined value.
It can be seen that the water to be treated is not supplied to the gas-liquid separation region on the most upstream side from the upstream side of the gas-liquid separation tank in the water treatment route at a required flow rate. From this, it can be determined that clogging has occurred at the upstream side of the gas-liquid separation tank in the water treatment route, particularly at the portion such as the filter for removing organic substances.

As described in claim 6, a flow sensor arranged downstream of the gas-liquid separation tank in the water treatment path, and a clogging detection unit for detecting the presence or absence of clogging from the flow rate detected by the flow sensor. By combining and, it is possible to detect clogging of the filter and the like. That is, when the flow rate detected by the flow rate sensor becomes smaller than the preset flow rate during normal operation, the water to be treated supplied to the gas-liquid separation tank is not flowing smoothly through the filter to the downstream side, or From the water treatment route on the upstream side of the liquid separation tank, it can be seen that either the water to be treated is not being supplied at the required flow rate,
It can be determined that clogging has occurred at any of these portions.

Further, as described in claim 7, a pressure gauge arranged upstream or downstream of the gas-liquid separation tank in the water treatment route, and an eye for detecting the presence or absence of clogging from the water pressure detected by the pressure gauge. By combining with a clogging detection unit, clogging of a filter or the like can be similarly detected.
That is, in the water treatment route, when the pressure gauge is arranged on the downstream side of the gas-liquid separation tank, during normal operation, when the water pressure detected by the pressure gauge becomes smaller than the preset water pressure,
The water to be treated supplied to the gas-liquid separation tank is not flowing smoothly through the filter to the downstream side, or the required amount of water to be treated is supplied to the gas-liquid separation tank from the upstream water treatment route. It can be determined that any one of these parts has not been supplied, and it is possible to determine that clogging has occurred in any of these parts.

Further, when a pressure gauge is arranged upstream of the gas-liquid separation tank in the water treatment route and downstream of the above-mentioned filter for removing organic substances, the water pressure detected by the pressure gauge during normal operation is When it becomes smaller than the preset water pressure, the gas-liquid separation tank, from the upstream water treatment route,
It was found that the water to be treated was not supplied at the required flow rate, and it can be judged that the filter for removing organic substances is clogged.

Further, in the above arrangement, when the water pressure detected by the pressure gauge becomes larger than the preset water pressure during normal operation, the water to be treated supplied to the gas-liquid separation tank passes smoothly through the filter on the downstream side. It can be determined that the filter in the gas-liquid separation tank is clogged because it is not flowing into the tank. Further, in the case of arranging the pressure gauge upstream of the gas-liquid separation tank of the water treatment route and upstream of the filter for removing organic matter, during normal operation,
When the water pressure detected by the pressure gauge becomes higher than the preset water pressure, the water to be treated supplied to the gas-liquid separation tank is flowing smoothly through the filter to the downstream side.
Or to the gas-liquid separation tank, from the water treatment route on the upstream side,
It can be seen that either the water to be treated is not being supplied at the required flow rate, and it can be determined that clogging has occurred at any of these portions.

According to the structure of claim 4, for example, when the operation of the apparatus is started, the delay of the flow of the water to be treated caused by the flow resistance when the water to be treated passes through the filter in the gas-liquid separation tank, Or, ・ During normal operation of the equipment, due to a decrease in the flow rate of the water to be treated that is caused by clogging of the filter, etc., it is necessary to communicate with the water treatment route of the gas-liquid separation tank downstream of the gas-liquid separation tank. When the water level in the gas-liquid separation area on the downstream side is lower than a predetermined water level is detected by the water level detection sensor arranged in the gas-liquid separation area on the most downstream side, the water treatment on the upstream side of the gas-liquid separation tank is performed. By the supply of the water to be treated from the path, the air bite prevention control unit operates to temporarily stop the flow of the water to be treated by the downstream portion until the water level is restored to the predetermined water level.

As a result, air is prevented from being bitten by the water to be treated which flows back from the gas-liquid separation tank to the water tank through the water treatment path, so that the water in the water tank is more reliably prevented from becoming clouded. be able to. Further, during normal operation of the device, the reason why the water level in the gas-liquid separation region on the most downstream side is lowered is because of the clogging of the filter or the like as described above. The air bite prevention control unit may also function as a clogging detection unit.

According to the structure of claim 8, the flow rate of the water to be treated flowing through the water treatment route is adjusted by the adjusting valve in accordance with the capacity of the water tank and the treatment capacity of the apparatus at the time of installation or maintenance of the apparatus. The flow meter can be connected to the connection part provided in the water treatment path only when the operation is performed, and the other flow meter which is not necessary during the actual operation of the device can be removed. Simplification of equipment by reducing
And the cost can be reduced.

According to the structure of claims 10 to 12, for example, at the time of maintenance or failure of the electrode assembly, or when the residual chlorine concentration sharply decreases due to a rapid increase in the number of visitors to the pool, etc., Since the water to be treated is circulated through a bypass route with less pressure loss, a sterilizing treatment can be performed by supplying a sterilizing liquid such as an aqueous solution of sodium hypochlorite stored in a chemical liquid tank to the supplying route. It is possible to minimize the decrease in the residual chlorine concentration of the treated water and stabilize the water quality.

According to the ninth and thirteenth aspects, the residual chlorine concentration is expected to drop sharply due to, for example, a rapid increase in the number of visitors to the pool or the like, or an increase in the temperature and water temperature due to changes in the weather. For example, you can switch to manual operation to forcibly sterilize the water to be treated and prepare for the sudden decrease in the residual chlorine concentration. When the temperature drops to 0, the residual chlorine concentration can be recovered as quickly as possible by switching to manual operation and continuously operating the device, which enables more flexible operation.

According to the structure of claim 14, for example, at the time of installation or maintenance of the device, while continuing the operation of the main circulation path, near the branch point from the main circulation path on the water treatment path, Also, these operations can be performed by simply closing the on-off valves respectively provided at positions near the confluence point to the main circulation path, and workability is improved. In particular, since the above-mentioned work can be performed during business hours such as a pool during the daytime, the burden on the worker can be reduced. In addition, since each on-off valve is located as close as possible to the main circulation path on the water treatment path, unnecessary pressure loss occurs in the main circulation path or air is trapped in the water to be treated flowing through the main circulation path. Is prevented from occurring.

[0036]

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 diagram showing a simplified structure in which a water treatment device 1 according to an embodiment of the present invention is incorporated in a large-sized water tank 2 such as a pool or a bath tub. As shown in the figure, the circulation pump 2 has a filter 21 for sand filtration incorporated in the water tank 2.
2, a main circulation path 20 for constantly circulating a large amount of water W to be treated in the direction indicated by the double solid line arrow in the figure is installed, and the water treatment path 10 of the water treatment device 1 is the solid line in the figure. As indicated by the arrow, the main circulation path 20 is branched from the branch point J1 on the downstream side of the filter 21 and includes an electrode set 11 including a plurality of electrode plates 110 ... After passing through the gas-liquid separation tank 13 which also incorporates the filters 12 and 12 and the two water level detection sensors S1 and S2 and also serves as an electrolysis tank, the main circulation is performed again at the confluence J2 on the downstream side of the branch J1. It is connected to join the path 20.

On the way from the branch point J1 of the water treatment route 10 to the gas-liquid separation tank 13, the on-off valve B1, the regulating valve B2 for adjusting the flow rate, and the water to be treated are filtered to remove organic substances and the like. A filter 14 and a solenoid valve B3 for performing the operation are arranged. Further, on the way from the gas-liquid separation tank 13 to the confluence J2, a flow sensor S3 for measuring the flow rate of the water to be treated sent from the gas-liquid separation tank 13 and a circulation pump P are sequentially arranged.
1, a check valve B7 for preventing backflow, an adjusting valve B8 for adjusting the flow rate, and an opening / closing valve B9 are arranged.

Of these, the open / close valves B1 and B9 are provided in order to perform work such as installation and maintenance of the apparatus 1 with good workability without causing pressure loss in the main circulation path 20, air entrapment, etc., as described above. , Branch point J on water treatment route 10
1. It is arranged as close as possible to the confluence J2. At a position between the filter 14 and the solenoid valve B3, the solenoid valve B4 is branched at a branch point J3 as shown by a dashed arrow in the figure.
Via a pressure reducing valve B5 for reducing pressure and a regulating valve B6 for regulating the flow rate, and connected to a residual chlorine sensor S4 for measuring the residual chlorine concentration in the water to be treated, from which a gas-liquid separation tank is connected. A branch path 10a reaching 13 is connected.

Due to its structure, the residual chlorine sensor S4 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. That is, when the water treatment device 1 is in operation, the residual chlorine sensor S4 is maintained in a normal state by continuously flowing water through the branch path 10a. Adjustment valve B
As described above, between the filter 2 and the filter 14, the adjusting valve B2 extends from the branch point J1 to the gas-liquid separation tank 13 in the water treatment route 10 at the time of installation or maintenance of the device 1. When adjusting the flow rate of the water to be treated flowing through the upstream side portion, there is provided a connecting portion U1 to which a flow meter for actually measuring the flow rate is detachably connected.

Similarly, between the check valve B7 and the adjusting valve B8, the adjusting valve B8 causes a downstream portion of the water treatment path 10 from the gas-liquid separation tank 13 to the confluence J2. When adjusting the flow rate of the water to be treated, there is provided a connecting portion U2 to which a flow meter for actually measuring the flow rate is detachably connected. Both of these connecting portions U1 and U2 are configured, for example, by disposing a pair of union joints in the middle of the pipes forming the water treatment route 10 and making the pipes between them detachable.

After the pipe between the union joints is connected to the one to which a flow meter is connected, the device 1 is operated, and the upstream and downstream flow rates are adjusted by the adjusting valves B2 and B8. , Stop the device and open / close valve B
By closing B1 and B9 to stop the water flow, and then disconnecting the flow meter and connecting a normal pipe, a normal operating state is achieved. Between the check valve B7 and the connecting portion U2, a sterilizing liquid L such as an aqueous solution of sodium hypochlorite, a metering pump P2 is supplied from the chemical liquid tank 15 as indicated by a double-dashed arrow in the figure. A supply path 10b for supplying the water treatment path 10 is connected at the confluence J4.

A branch point J5 is provided between the connecting portion U1 and the filter 14 as shown by an alternate long and short dash line arrow in the figure, and a check valve B7 and a confluence point are provided via a solenoid valve B10. A bypass route 10c is connected to a junction J6 with J4. As described above, during maintenance or failure of the electrode assembly 11, or when the residual chlorine concentration drops sharply, the solenoid valve B that is always open during normal operation is used.
3 is closed and the electromagnetic valve B10 that is always closed is opened so that the water to be treated is bypassed through the bypass path 10c with less pressure loss.
Through the supply path 10b, while circulating through
The sterilization process is performed by supplying the sterilizing liquid L stored in the chemical liquid tank 15.

This switching may be performed manually, or the latter switching when the residual chlorine concentration sharply decreases may be automatically performed based on the measured value of the residual chlorine concentration by the residual chlorine sensor S4. Further, a pressure gauge S5 for measuring the water pressure of the water to be treated is provided between the confluence J4 and the connecting portion U2.
Are connected. As shown in FIG. 2, the gas-liquid separation tank 13 has a box-shaped tank body 130 as a main body, and a large lid that closes an upper opening of the tank body 130 and constitutes an upper surface portion of the gas-liquid separation tank 13. The inside of the tank main body 130 includes three gas-liquid separation regions 13 by the two filters 12 for removing fine bubbles described above.
It is divided into 0a to 130c.

The three gas-liquid separation regions 130a-
In the gas-liquid separation region 130a on the most upstream side of 130c, the electrode set 1 including the plurality of electrode plates 110 described above.
1 is arranged, and the gas-liquid separation tank 13 is also used as an electrolytic tank for electrochemical reaction. Further, at the bottom of the gas-liquid separation region 130c on the most downstream side, the outlet 130 for the water to be treated is provided.
d is formed, and the circulation pump P1 is arranged on the pipe 101 forming the latter half of the water treatment route 10 from the delivery port 130d.

On the other hand, a large lid 131 is provided above the water surface of the treated water W in each of the gas-liquid separation areas 130a to 130c in the gas-liquid separation tank 13 and above the upper side of the filters 12, 12. A gap is formed between the gas-liquid separation tank 13 and the gas-liquid separation area 13
A gas flow passage extending from 0a to 130c is formed. Further, of the large lid 131, the filter 12 for water flow,
Due to the effect of the resistance of 12, the water level becomes the lowest as shown in the figure, so that there is sufficient space above the water surface, and the filter 12, 12 is located immediately above the most downstream gas-liquid separation region 130c. An exhaust pipe F2 in which a suction type blower F1 is disposed in the middle for forcibly discharging the gas originating from fine bubbles separated from the water to be treated W is connected, while the uppermost stream is connected. At the position immediately above the gas-liquid separation area 130a on the side, instead of the gas discharged to the outside of the tank by the blower F1 as shown by the black arrow in the figure, air is introduced into the tank as shown by the white arrow in the figure. Air inlet 1 for introducing
31a is formed, and the pipe 100 forming the first half of the water treatment route 10 is connected.

Each of the filters 12 and 12 is formed in a plate shape as shown in FIG. 3, and its two peripheral edges are formed on the inner wall surface and the inner bottom surface of the tank main body 130. By removing and inserting between 130e from above,
As shown by the two-dot chain line arrow in each figure, the tank body 13
It is detachably attached to 0. When the filter 12 is clogged, the large lid 131
An opening 13 formed above the filters 12, 12.
The separable small lid body 132 that covers the 1b is removed, and with the opening 131b open, the filter 12 is pulled out upward to be removed, and instead, a new filter 12 without clogging or After inserting the original filter 12 that has been cleaned and cleared of clogging, and then simply closing the opening 131b with the small lid body 132, the filter 12 is always kept clean without clogging. To be done.

The small lid body 132 allows the large lid body 131 to
In the state of FIG. 2 in which the opening 131b of the small lid 1 is closed,
A seal material 133 interposed between the flange portion 132a of 32 and the upper surface of the large lid 131 seals the gap between the two so as not to cause water leakage or gas leakage. In addition, a plurality of electrode plates 110 forming the electrode set 11
, Are collectively arranged on the small lid member 134 that can be separated from the large lid member 131 so as to facilitate maintenance and replacement.

In the state of FIG. 2 in which the small lid body 134 is attached to the large lid body 131, the flange portion 134 thereof is also formed.
A seal member 135 interposed between a and the upper surface of the large lid 131 seals the gap between the two so as not to cause water leakage or gas leakage. Water level sensor S1
Is the water W to be treated in the gas-liquid separation region 130a on the most upstream side.
By detecting the change in the water level of the filter 12, the clogging of the filters 12, 12 and the water treatment route 10 on the upstream side of the gas-liquid separation tank 13, in particular, the filter 14 for removing organic substances is detected. Used for.

Further, the water level detection sensor S1 detects the water level in the gas-liquid separation area 130a on the most upstream side, and when the water level is not sufficient, the plurality of electrode plates 110 forming the electrode set 11 ... It can also be used to prevent energization or to adjust the amount of water to be treated that flows into and out of the gas-liquid separation tank 13 in order to keep the water level in the gas-liquid separation region 130a constant. On the other hand, as described above, the water level detection sensor S2 has the most downstream gas-liquid separation region 130c.
By controlling the circulation pump P1 by detecting the water level of the water W to be treated, the air is prevented from being trapped in the water to be treated which is returned from the gas-liquid separation tank 13 to the water tank 2 through the water treatment route 10. Used to With it, filter 1
It can also be used to detect the clogging of the filters 12, 2 and 12 or the water treatment route 10 on the upstream side of the gas-liquid separation tank 13, particularly the filter 14 for removing organic substances.

Further, the gas-liquid separation area 13 of the large lid 131
The pipe 102 forming the branch path 10a described above is connected to a position directly above 0c. Below the gas-liquid separation tank 13, a tray 16 for the leaked untreated water is arranged.
Even if a water leak occurs in the gas-liquid separation tank 13,
It is possible to minimize the risk of short circuit or electric leakage due to leaked water to be treated. In the figure, reference numeral 10d is a drainage path for sending leaked water to be treated received by the tray 16 to a drain port (not shown), and reference numeral B11 is this drainage path 1
It is an adjusting valve for adjusting the flow rate of the water to be treated passing through 0d.

Reference numeral 10e is a drainage path for draining the water to be treated remaining in the gas-liquid separation tank 13 and the water treatment path 10 and sending it to the drain port at the time of maintenance, for example. It is an on-off valve for always closing the drainage path 10e. As the electrode plate 110 constituting the electrode set 11, for example, gold (Au), platinum (Pt), palladium (P) is formed on the entire surface of a substrate made of titanium (Ti).
d), a thin film of a noble metal such as platinum-iridium (Pt-Ir) coated by a plating method or a firing treatment is used.

As the filter 12 for removing fine air bubbles and the filter 14 for removing organic substances, a non-woven fabric made of natural or chemical fiber is used. Among them, particularly as the filter 12 for removing fine bubbles, since the filter 12 is arranged immediately after the electrochemical reaction by the electrode set 11, a chlorine-containing compound such as polypropylene fiber or active oxygen generated by the electrochemical reaction, etc. A fine-meshed non-woven fabric is preferably used because it is formed of a fiber having sufficient resistance to, and fine bubbles are not easily permeated.

The size of the through holes is not particularly limited, but the average diameter of the through holes is preferably about 1 to 100 μm, more preferably about 10 to 50 μm.
If the average diameter of the through holes is less than this range, the resistance of the filter 12 to the water flow may become too large, and the efficiency of sterilizing the water to be treated may decrease. Conversely, if the average diameter exceeds this range, Has an insufficient effect of storing the fine bubbles without allowing them to pass through, which may reduce the efficiency of removing the fine bubbles.

On the other hand, the filter 14 for removing organic substances and the like
As the material, a non-woven fabric formed of fibers such as polypropylene fiber is preferably used in consideration of its durability. However, as the filter 14, in order not to reduce the flow rate of the water to be treated passing through the water treatment route 10,
It is preferable to use a nonwoven fabric having a larger average diameter of the through holes than that of the filter 12, that is, an average diameter of more than 100 μm. FIG. 4 is a block diagram showing an electrical configuration of the water treatment device 1 of FIG.

As shown in the figure, the water treatment device 1 includes an electrode set 1
1, the water treatment path 10, the supply path 10b,
The control unit 30 is provided as a control unit that operates each unit that configures the bypass path 10c and the like. The outputs of the water level detection sensors S1 and S2, the flow rate sensor S3, the residual chlorine sensor S4 and the pressure gauge S5 are given to the control unit 30. The control unit 30 is provided with a timer 31 for defining the timing of various operations 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.

The control unit 30 performs various calculations based on the outputs of the sensors S1 to S5, the timing defined by the timer 31, and the initial value registered in the memory 32, and the control signal is sent to the driver based on the calculation. Give to 33. Then, the driver 33 controls energization output (energization current) to the electrode set 11 based on the applied signal, energization control such as energization time, and opens / closes the solenoid valves B3, B4, B10.
In addition, drive control of each pump P1, P2 and blower motor F1 is performed.

In the figure, reference numeral SW is the control unit 3 described above.
An automatic-manual switch that switches between automatic operation using 0 and manual operation for forcibly energizing the electrode set 11 and actuating the water treatment path 10 etc. regardless of the output signals from the sensors. is there. FIG. 5 is a flowchart showing a flow of clogging detection using the water level detection sensor S1 in the control performed by the control unit 30. When the power of the water treatment device 1 is turned on, each part constituting the water treatment path 10 is activated, and the water to be treated flows into the gas-liquid separation region 130a on the most upstream side of the gas-liquid separation tank 13, the control unit is first operated. Thirty
Confirms whether or not the water level has reached a predetermined water level H ₀ within the detection range of the water level detection sensor S1 (step SP).
1).

Next, when the water level reaches H ₀ , the timer 31 is reset (T ← 0) to start time measurement (step SP2), and the time T ₁ required until the water level reaches H ₁ is obtained ( Steps SP3 to SP4). And this time T ₁
Is compared with a threshold value recorded in the memory 32 in advance, and the time T ₁ is longer than the upper limit threshold value T _L (T ₁ >).
_TL ), it is determined that clogging has occurred on the upstream side of the gas-liquid separation tank 13, and a message to that effect is displayed (steps SP5 to SP6).

On the other hand, when the time T ₁ is shorter than the lower limit threshold T _S (T ₁ <T _S ), the filter 1 in the gas-liquid separation tank 13
It is determined that any one of 2 and 12 is clogged, and a display to that effect is displayed (steps SP7 to SP8). Further, the time T ₁ is within the range between the thresholds T _L and T _S (T _S ≦
When T ₁ ≦ T _L ), it is determined that the clogging has not occurred in any part (step SP7), and the clogging detection control ends without displaying anything.

Next, FIG. 6 is a flow chart showing a flow of clogging detection using the flow rate sensor S3 in the control performed by the control unit 30. When the power of the water treatment device 1 is turned on, each part constituting the water treatment path 10 is activated, and the water to be treated starts to circulate in the water treatment path 10, the controller 30 causes the flow rate sensor S3 to operate. The flow rate F is measured (step SP9). Then, it is compared with the threshold value F ₁ recorded in the memory 32 in advance, and when the measured value F is smaller than the threshold value F ₁ (F <F ₁ ), the filter 12 in the gas-liquid separation tank 13 is compared. , 12, or it is determined that clogging has occurred on the upstream side of the gas-liquid separation tank 13 and a message to that effect is displayed (steps SP10 to SP11).

On the other hand, the measured value F is not less than the threshold value F ₁ (F ≧
When F ₁ ), nothing is displayed and this detection is continued until the operation of the device 1 is completed (steps SP10, S).
P12). Next, FIG. 7 is a flowchart showing a flow of clogging detection using the pressure gauge S5 in the control performed by the control unit 30. When the power of the water treatment device 1 is turned on, each part constituting the water treatment route 10 is activated, and the water to be treated starts circulating in the water treatment route 10, the control unit 30 causes the pressure gauge S5 to The water pressure is measured (step SP13).

Then, it is compared with the threshold value P ₁ recorded in the memory 32 in advance, and when the measured value P is smaller than the threshold value P ₁ (P <P ₁ ), the inside of the gas-liquid separation tank 13 is It is judged that clogging has occurred on the upstream side of any of the filters 12 and 12 or the gas-liquid separation tank 13 (steps SP14 to SP1).
5). On the other hand, when the measured value P is greater than or equal to the threshold value P ₁ (P ≧ P ₁ ), nothing is displayed and this detection is continued until the operation of the device 1 is completed (steps SP14 and SP1).
6).

The above-mentioned clogging detection in FIGS. 5 to 7 may be carried out by any one of them. For safety,
You may use together 2 or more types. Next, FIG. 8 is a flowchart showing a flow of air bite prevention using the water level detection sensor S2 in the control performed by the control unit 30.
When the power of the water treatment device 1 is turned on, each part constituting the water treatment path 10 is activated, and the water to be treated starts to circulate in the water treatment path 10, the controller 30 causes the water level detection sensor S to operate.
2, the water level h of the water to be treated in the gas-liquid separation area 130c on the most downstream side of the gas-liquid separation tank 13 is measured (step SP18).

Next, this measured value is stored in advance in the memory 32.
When the measured value h is smaller than the threshold value h ₁ (h <h ₁ ) compared with the threshold value h ₁ recorded in the above, it is judged that air trapping may occur, and the circulation pump P1 Is stopped (step SP19). Then, when the measured value h exceeds the threshold value h ₁ (h ≧ h ₁ ), the circulation pump P1
Is restarted (step SP20), and the series of operations described above is continued until the operation of the device 1 is completed (step S20).
P21).

Next, the water treatment device 1 shown in FIG. 9 will be described. The water treatment device 1 of this example is used by being incorporated in a large-sized water tank 2 such as a pool or a bath tub, as in the case of FIG. 1 described above. The water tank 2 has a filter 21 for sand filtration and a heat exchanger 23 for heat exchange (mainly for heating the water W to be treated) incorporated therein. A main circulation path 20 is provided to constantly circulate in the direction indicated by the double solid line arrow in the figure.

The water treatment route 10 of the water treatment device 1 is branched from a branch point J7 between the filter 21 and the heat exchanger 23 of the main circulation route 20 as shown by a solid line arrow in the figure, After passing through the electrolysis tank 17 having the electrode set 11 composed of a plurality of electrode plates 110 ..., It is connected so as to join the main circulation path 20 again at the joining point J8 on the downstream side of the heat exchanger 23. . On the way from the branch point J7 to the electrolytic cell 17 of the water treatment route 10, a regulating valve B13 for regulating the flow rate, a filter 14 for filtering the water to be treated to remove organic substances, an ion exchange resin in order. 18, open / close valve B
14 and the conductivity sensor S6 are arranged.

On the way from the electrolytic cell 17 to the confluence J8, the circulation pump P1 and the adjusting valve B for adjusting the flow rate are sequentially provided.
15 and a check valve B16 are arranged. Open / close valve B
14 and the conductivity sensor S6 branch at a branch point J9 as indicated by a dashed arrow in the figure, and the residual chlorine concentration in the water to be treated is adjusted via a regulating valve B17 for regulating the flow rate. Is connected to a residual chlorine sensor S4 for measuring the temperature, and a branch path 10f from there to a drain port (not shown) is connected. The reason for this is as described above.

Between the adjusting valve B15 and the check valve B16,
A sterilizing liquid L such as an aqueous solution of sodium hypochlorite is supplied from the chemical liquid tank 15 as shown by double-dashed arrows in the figure to the metering pump P.
A supply path 10b for supplying the water treatment path 10 at the confluence J10 is connected via 2. Adjustment valve B
13 and the filter 14 are branched at a branch point J11 as indicated by an alternate long and short dash line in the figure, and a confluence point between the regulating valve B15 and the confluence point J10 is provided via a solenoid valve B18. A bypass route 10c leading to J12 is connected.

As described above, at the time of maintenance or failure of the electrode assembly 11, or when the residual chlorine concentration drops sharply, the solenoid valve B14 that is always open during normal operation is used.
And the solenoid valve B18 that is closed at all times is opened to circulate the water to be treated through the bypass passage 10c with less pressure loss, and the sterilizing liquid L stored in the chemical liquid tank 15 is supplied thereto from the supply passage 10b. Then, sterilization is performed. This switching may be performed manually, or the latter switching when the residual chlorine concentration sharply decreases may be automatically performed based on the measured value of the residual chlorine concentration by the residual chlorine sensor S4.

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 schematic sectional view of a gas-liquid separation tank, which is a main part of the water treatment device.

FIG. 3 is a partially cutaway perspective view showing a filter attachment / detachment structure in the gas-liquid separation tank.

FIG. 4 is a block diagram showing an electrical configuration of the water treatment device of FIG.

FIG. 5 is a flowchart showing a flow of a clogging detection operation using a water level detection sensor among control contents performed by a control unit.

FIG. 6 is a flowchart showing a flow of a clogging detection operation using a flow rate sensor among control contents performed by a control unit.

FIG. 7 is a flowchart showing a flow of a clogging detection operation using a pressure gauge among control contents performed by a control unit.

FIG. 8 is a flow chart showing a flow of an air bite prevention operation using a water level detection sensor among the control contents performed by the control unit.

FIG. 9 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.

[Explanation of symbols]

1 Water treatment device 10 Water treatment route 11 electrodes 110 electrode plate 12 filters 13 Gas-liquid separation tank 130a, 130b, 130c Gas-liquid separation area 2 aquarium W treated water

Continued Front Page (72) Inventor Kazushi Kawamura 2-5-5 Keihan Hondori, Moriguchi City, Osaka Prefecture Sanyo Electric Co., Ltd. (72) Minoru Nakanishi 2-5-5 Keihan Hondori, Moriguchi City, Osaka Prefecture Sanyo Denki Co., Ltd. (72) Inventor Minoru Kishi 2-5-5 Keihan Hondori, Moriguchi City, Osaka Sanyo Denki Co., Ltd. (56) Reference JP 2001-219167 (JP, A) JP 2001-170639 (JP, A) JP 2001-170641 (JP, A) JP 2000-70948 (JP, A) JP 8-39071 (JP, A) JP 9-56614 (JP, A) JP JP 7-171568 (JP, A) (58) Fields investigated (Int.Cl. ⁷ , DB name) C02F 1/46 A47K 3/00 A61L 2/02 A61L 2/18 B01D 19/00

Claims (14)

(57) [Claims] 1. After sterilization by an electrochemical reaction by 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 A water treatment path for returning to the water tank is provided, and the water to be treated is allowed to pass through the water treatment path, but the fine bubbles generated by the electrochemical reaction and mixed in the water to be treated are stored without passing through. By increasing the diameter, a gas-liquid separation tank whose inside is divided into a plurality of gas-liquid separation regions is arranged by a filter that has a function of separating and removing from the water to be treated, and A water treatment device that is detachably attached to the tank. 2. The water treatment apparatus according to claim 1, further comprising control means for activating the water treatment path while controlling energization of the electrode set. 3. A water level detection sensor for detecting the water level of the water to be treated in the gas-liquid separation tank in the most upstream side of the gas-liquid separation tank, which is divided by a filter, is arranged in the gas-liquid separation area. , Based on the rising or falling speed of the water level detected by the water level detection sensor, the filter, and the water treatment route, the clogging detection unit for detecting the presence or absence of clogging in the upstream portion of the gas-liquid separation tank The water treatment device according to claim 2, wherein the water treatment device is provided. 4. A water level detection sensor for detecting the water level of the water to be treated in the gas-liquid separation area on the most downstream side, which is partitioned by a filter, is arranged in the gas-liquid separation tank. , In order to prevent air from being trapped in the water to be treated that flows back from the gas-liquid separation tank to the water tank through the water treatment route, when the water level detected by the water level detection sensor does not reach the predetermined water level, the detected water level is detected. Until the water level reaches the predetermined water level, an air bite prevention control unit is provided to stop the flow of the water to be treated by the portion of the water treatment path on the downstream side of the gas-liquid separation tank to restore the water level. The water treatment device according to claim 2. 5. The air bite prevention control unit also functions as a filter and a clogging detection unit for detecting the presence or absence of clogging in a portion of the water treatment route upstream of the gas-liquid separation tank. 4. The water treatment device according to 4. 6. A water treatment path downstream of the gas-liquid separation tank,
A flow rate sensor for detecting the flow rate of the water to be treated flowing through the water treatment route is arranged, and the control means is a part of the filter and the water treatment route upstream of the gas-liquid separation tank from the flow rate detected by the flow rate sensor. The water treatment apparatus according to claim 2, further comprising a clogging detection unit that detects the presence or absence of clogging of the water. 7. A pressure gauge for detecting the water pressure of the water to be treated flowing through the water treatment passage is arranged upstream or downstream of the gas-liquid separation tank in the water treatment passage, and the pressure gauge is provided in the control means. 3. The water treatment apparatus according to claim 2, further comprising a clogging detection unit that detects the presence or absence of clogging in a portion of the filter and the water treatment path upstream of the gas-liquid separation tank based on the detected water pressure. . 8. A control valve for adjusting the flow rate of water to be treated flowing through the water treatment route on the water treatment route, and a flow rate of the water to be treated flowing through the water treatment route when adjusting the flow rate by the regulation valve. The water treatment device according to claim 1, further comprising: a connection part to which a flowmeter to be measured is connected. 9. An automatic operation for automatically controlling the energization of the electrode set and the operation of the water treatment path based on the output signals from the sensors arranged on the water treatment path, and the control means. 3. The water treatment system according to claim 2, further comprising an automatic-manual switching unit for switching between energization of the electrode set and manual operation for forcibly activating the water treatment path regardless of the output signal of the water treatment system. apparatus. 10. After sterilization by an electrochemical reaction by 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 composed of at least two electrode plates A water treatment route for returning to the water tank, a supply route connected to the downstream side of the electrode set of the water treatment route for supplying the sterilizing liquid stored in the chemical solution tank to the water treatment route, and a water treatment route for the water treatment route, And a bypass path that branches on the upstream side of the electrode set and joins on the upstream side of the joining portion of the supply path. 11. The water treatment apparatus according to claim 10, further comprising control means for operating the water treatment route, the supply route, and the bypass route while controlling the energization of the electrode set. 12. An electrolytic operation in which electric power is supplied to the electrode set to perform sterilization treatment while circulating water to be treated in the water treatment passage, and sterilization liquid is supplied from a supply passage while circulating water to be treated in the bypass passage. The water treatment apparatus according to claim 11, further comprising an electrolysis-medication switching unit that switches between a medication operation of supplying sterilization treatment and a medication operation. 13. An automatic control means for automatically controlling the energization of an electrode set and the operation of a water treatment route, a supply route and a bypass route based on output signals from sensors arranged on the water treatment route. An automatic / manual switching unit was provided to switch between operation and energization of the electrode set regardless of the output signals from the sensors, and manual operation for forcibly operating the water treatment route, supply route, and bypass route. The water treatment device according to claim 11, which is characterized in that. 14. A water tank for storing water to be treated,
After performing the treatment such as sand filtration by introducing the water to be treated from the water tank, it is connected to the main circulation path to return to the water tank, from the water tank, introduce the water to be treated through the main circulation path,
By providing electricity to the electrode set consisting of at least two electrode plates to sterilize by an electrochemical reaction, a water treatment route for returning to the water tank through the main circulation route is provided, and from the main circulation route on the water treatment route. An on-off valve is provided in the vicinity of each of the branch points and in the vicinity of the confluence with the main circulation path.