JP2657944B2 - Flow-through water electrolyzer - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flow-through type water electrolysis disinfector used for electrolyzing stored water stored in a water storage tank for additional disinfection.

[0002]

2. Description of the Related Art Conventionally, when disinfecting tap water for drinking,
In general, a method has been adopted in which a disinfectant is directly injected into water to be disinfected and disinfected. However, this requires replenishment of the disinfecting solution at all times, and has problems in operation and maintenance of the injection device. Further, if the injection amount of the disinfecting solution is incorrect, there is a problem of carcinogenicity due to excessive disinfection, a problem of poor disinfection due to insufficient injection, and a problem of increasing running cost.

Therefore, the present inventor has disclosed in Japanese Patent Application No. Hei.
As disclosed in Japanese Patent Publication No. 87, a technique relating to an underwater immersion-type electrolytic disinfection apparatus that electrolyzes salt contained in water and additionally disinfects water to be disinfected has been developed and proposed. This electrolytic disinfection device is equipped with a pair of electrodes in the disinfector body, immersed it in the water to be disinfected, electrolyzes the salts contained in the water for disinfection, and converts sodium hypochlorite from the contained chlorine ions. The water to be disinfected is generated and disinfected by this sodium hypochlorite.

[0004]

This electrolytic disinfection device is
Since the salt contained in tap water etc. can be used directly, there is no need to inject or add a disinfectant solution, which has the advantage of eliminating excessive disinfection and other problems.
There are advantages such as running cost reduction as well as labor saving.

[0005] However, this electrolytic disinfection device is simply put in and immersed in an arbitrary location in the water to be disinfected in the water tank.
The disadvantage is that it only generates sodium hypochlorite by electrolyzing the salts contained in the water to be disinfected, so that it is not possible to disinfect the entire water to be disinfected uniformly and sufficiently unless electrolysis is continued for a long time. There is.

[0006] Further, since the electrolytic disinfection device is merely immersed in the water to be disinfected in the water storage tank, the residual chlorine cannot be diffused uniformly over the entire water to be disinfected. To diffuse quickly throughout the target water, a separate chlorine diffusion device is required. In addition, this electrolytic disinfection device has a disadvantage that the amount of water to be subjected to electrolytic disinfection is very large, and thus residual chlorine is often re-decomposed.

Furthermore, since the electrolytic disinfection device is immersed in the water to be disinfected in the water storage tank, the state of electrolysis can be confirmed.
Alternatively, there is a disadvantage that maintenance, inspection, cleaning, and the like of the electrolytic disinfection device itself are very troublesome. In view of such a conventional problem, the present invention can be installed outside a water storage tank or the like, and allows water to be disinfected to flow from one end side to the other end side of the closed container so that the water to be disinfected is closed container. It is an object of the present invention to provide a flowing water electrolysis type disinfecting apparatus that can electrolyze and sterilize water to be disinfected while passing through the inside.

[0008]

According to the first aspect of the present invention, an inflow port 18 is formed at one end and an outflow port 45 is formed at an upper portion of the other end, and the inside is an electrolysis chamber 15. Closed container 12
In the electrolysis chamber 15 of this closed container 12, the disinfection target water flowing from the inflow port 18 is arranged in the vertical direction along the flow direction of the disinfection target water so that the water to be disinfected flows through the electrolysis chamber 15 to the outflow port 45 side. A plurality of the electrodes 22 and 23 are provided at predetermined intervals in a direction orthogonal to the flow direction, and the electrodes 22 and 23 are connected to the power cable 28 in the closed vessel 12 closer to the outlet 45 than the electrolytic chamber 15. A waterproof power supply terminal section 16 is provided, and an inflow port 18 and an electrolysis chamber 15 are provided.
A rectifying means 13 for rectifying water to be disinfected flowing from the inflow port 18 to the electrolysis chamber 15 side,
Filter means 14 for filtering the water to be disinfected downstream of 13 is provided.

According to a second aspect of the present invention, in the first aspect of the present invention, chloride is added to the water to be disinfected in the closed vessel 12 on the inlet 18 side of the electrolytic chamber 15. Means 14 are provided.

According to a third aspect of the present invention, in the first or second aspect of the present invention, the outflow pipe 10 is connected to the outflow port 45, and the water to be disinfected after electrolysis flows out of the outflow pipe 14. Water outlet part 47 and gas discharge part 48 for discharging gas generated during electrolysis
It is provided with.

The present invention described in claim 4 is the first and second aspects of the present invention.
In the present invention described in 3 or 3, an interval holding member 2 for holding the electrodes 22, 23 at predetermined intervals above and below the closed container 12 is provided.
4, 25 are provided, and a gas passage 38 in the flow direction of the water to be disinfected is formed between the upper spacing member 24 and the upper wall 36 of the sealed container 12.

[0012]

According to the first aspect of the present invention, the inflow port on one end side is provided.
The water to be disinfected flows into the closed container 12 from 18, and the water to be disinfected is rectified by the rectification means 13, filtered by the filter means 14, and then electrolyzed between the electrodes 22 and 23 of the electrolysis chamber 15 to disinfect the water. Disinfect the target water. Then, discharge the water to be disinfected after electrolysis into the outlet 45
From the closed container 12. A voltage is applied to each of the electrodes 22 and 23 from the power cable 28 via the power terminal 16.

According to the second aspect of the present invention, when the amount of chloride is short, the amount of chloride added to the water to be disinfected in the closed vessel 12 between the inlet 18 and the electrolytic chamber 15 by the chloride adding means 14. Is added, and thereafter, electrolysis is performed between the electrodes 22 and 23 of the electrolysis chamber 15.

According to the third aspect of the present invention, when water to be disinfected after electrolysis is caused to flow out of the outlet pipe 10 connected to the outlet 45, gas generated during electrolysis and water to be disinfected are separated from each other.
Water to be disinfected is discharged from a water outlet 47, and gas is discharged from a gas discharge unit 48.

According to the fourth aspect of the present invention, the closed container 12
The electrodes 22, 23 are held at predetermined intervals by interval holding members 24, 25 provided above and below. The gas generated during the electrolysis is discharged in the flow direction of the water to be disinfected from a gas passage 38 provided between the upper spacing member 24 and the upper wall 36 of the closed vessel 12.

[0016]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below in detail with reference to the drawings. 1 to 6 show a first embodiment in which the present invention is used for supplementary disinfection of tap water. In FIG.
1 is an elevated water storage tank installed on the roof of a building or the like, and the water storage tank 1 is connected to a tap water supply system via an inlet pipe 2 and an outlet pipe 3 at a lower part. The stored tap water is stored, and the stored water 6 is supplied to each faucet 4 from the outlet pipe 3.

5 is a running water type water electrolysis disinfecter for drinking water,
Installed on water tank 1. The disinfecting device 5 pumps up a part of the stored water 6 in the water tank 1 as the water to be disinfected by the pump 7 through the pumping pipe 8 and the inflow pipe 9, and disinfects the water after passing through the disinfecting device 5. While circulating the water to be disinfected with the water storage tank 1 so that the water is returned to the stored water 6 of the water storage tank 1 through the outflow pipe 10 and the return pipe 11, the concentration of the chloride contained in the water to be disinfected is reduced. When the level is above a certain level,
Electrolyze the chlorides in the water to be disinfected to generate hypochlorite, and when the concentration of chlorides decreases and the generation of hypochlorite becomes impossible, electrolyze the water to be sterilized to generate oxygen. Therefore, electrolytic disinfection of the water to be disinfected is performed.

The disinfecting apparatus 5 is configured as shown in FIGS. That is, in FIGS. 2 to 5, reference numeral 12 denotes a horizontally long rectangular closed container formed in a rectangular parallelepiped shape, and this closed container 12 is interposed in the middle of a circulation path from the pumping pipe 9 to the return pipe 11. The closed container 12 has an inflow port 18 formed at the lower end of one end in the longitudinal direction and an outflow port 45 formed at the upper surface on the other end side. , A filter means 14, an electrolysis chamber 15, and a power supply terminal 16 are provided in series along the longitudinal direction.

The rectifying means 13 has a grid-shaped rectifying plate 17 divided into a large number in the vertical and horizontal directions, and is configured to rectify the water to be disinfected which flows in from the inlet 18 and flows to the electrolytic chamber 15 side. Have been. Note that a pre-filter that also serves as a rectifier may be provided in each grid of the rectifier plate 17. The inflow port 18 is formed at a lower portion of the side wall 19 of the closed casing 12 so as to face the current plate 17, and the inflow pipe 9 is fixed to the inflow port 18. A pumping pipe 8 is detachably connected to the inflow pipe 9.

The filter means 14 includes a filter holding frame 20.
Is provided on the filter holding frame 20, for mineral reinforcement for eluting chloride ions to be mineralized,
Alternatively, the structure is such that an element 21 for filtration or the like can be inserted as needed. When the mineral reinforcing element 21 is inserted into the filter holding frame 20 of the filter means 14, the filter means 14 also serves as a chloride adding means for adding chloride to the water to be disinfected.

The electrolytic chamber 15 is a filter means in the closed vessel 12.
A plurality of sets of electrodes 22 and 23 are incorporated in the electrolysis chamber 15 between the power supply terminal section 14 and the power supply terminal section 16. The electrodes 22 and 23 are arranged vertically along the flow direction of the water to be disinfected, that is, in the longitudinal direction of the closed vessel 12, so that the water to be disinfected flowing from the inlet 18 flows through the electrolytic chamber 15 toward the outlet 45. And a plurality of sheets are arranged at predetermined intervals in a direction orthogonal to the flow direction.

The electrodes 22 and 23 are formed, for example, by mixing a titanium plate with a platinum layer formed on one or both sides of the surface of the titanium plate, and a pair of upper and lower spacing members 24,24 at both ends in the longitudinal direction. 25 are held at substantially equal intervals. The spacing members 24 and 25 are not limited to both ends in the longitudinal direction, and may be provided at required intervals in the middle.

Terminals 26 and 27 are integrally formed on the electrodes 22 and 23 at the ends on the flow direction side of the water to be disinfected, and the terminals 26 and 27 are connected to the power cable 28 in the power terminal section 16. Each line 29, 30 is connected. The power supply terminal section 16 has an insulating filler 31 in the closed container 12 so that the terminals 26 and 27 of the electrodes 22 and 23 are completely sealed in a waterproof manner.
And the power cable 28 is a bush 32
Through the other side plate 33 of the sealed container 12.

The pair of upper and lower spacing members 24, 25 are made of an insulating material, and a plurality of fitting recesses 34, 35 are formed at regular intervals corresponding to the electrodes 22, 23, and the upper wall 36 of the closed container 12 is formed. Between the bottom wall 37 and the gas passages 38, 39 in the flow direction of the water to be disinfected.
The notches 40, 41 are formed to form the notch. And
The spacing members 24 and 25 are fitted up and down in the closed container 12, and the electrodes 22 and 23 are fitted in the fitting recesses 34 and 35, respectively. When the electrodes 22 and 23 are 0.8 mm, each fitting recess 34 and 3
5 has a width of about 1 mm and a depth of about 3 mm.
The spacing between 5 is 2-3 mm.

On the upper wall 36 of the closed container 12, a residual salt meter, PH
A hole 42 for inserting a measuring element such as a meter or a conductivity meter is formed corresponding to the rectifying means 13, and hatch type inspection windows 43 and 44 for visually inspecting the inside are provided with a filter means 14 and an electrolytic chamber. An outlet 45 is formed near the power supply terminal 16 of the electrolysis chamber 15. The outflow pipe 10 is fixed to the outflow port 45.

The outflow pipe 10 has a water outlet portion 47 from which the water to be disinfected after electrolysis flows out, and a gas exhaust portion 48 for separating gas generated during electrolysis from the water to be disinfected and discharging it to the atmosphere.
The return pipe 11 is connected to the water outlet 47. Gas exhaust unit 48
Can be automatically opened and closed continuously so that gas generated during electrolysis can be automatically extracted. Reference numeral 49 denotes a sampling unit which is provided on the side surface of the sealed container 12 so as to be freely opened and closed.

The power cable 28 is a power control unit in the control box 50.
Connected to 51. As shown in FIG. 6, the power control unit 51 includes a phase inversion unit 52, a large capacity power unit 53, a small capacity power unit 54,
It comprises a control unit 55, a main switch 56 with a safety device, and the like. The phase inverting section 52 is for intermittently inverting the phase (plus or minus) of the power supply applied between the electrodes 22 and 23, and the duration of the inversion and the applied voltage at that time are controlled by the control section 55. You.

The large-capacity power supply section 53 is for applying a large voltage between the electrodes 22 and 23 via the phase inverting section 52. The small-capacity power supply section 54 is provided when the large-capacity power supply section 53 is turned off. 22,23
This is for applying a small voltage therebetween. The large-capacity power supply unit 53 and the small-capacity power supply unit 54 are alternately turned on and off by a timer function or the like of the control unit 55, and when the control unit 55 receives an ON signal, the large-capacity power supply unit 53 outputs A small voltage is applied between the electrodes 22 and 23 from the small-capacity power supply unit 54 when a large voltage is applied between the electrodes 22 and 23 and an off signal is received from the control unit 55.

The control unit 55 includes a timer function for turning on / off the large-capacity power supply unit 53 and the small-capacity power supply unit 54, and a phase inversion unit based on an external signal from a running water meter 57, a residual salt meter 58, and the like.
52 and the power supply units 53 and 54 are controlled. The main switch 56 is connected to a commercial AC power supply of AC100 (V) via a power cord 59 and the like. In addition, 60 is an ammeter and 62 is a monitor lamp.

By using the disinfecting device 5 having the above configuration, the stored water 6 in the water storage tank 1 can be additionally disinfected as follows. That is, the flow meter when the inflow water into the water tank 1 is stopped
The control unit 55 operates according to the detection signal from 57 or the detection signal from the residual salt meter 58 when the residual chlorine value of the stored water 6 in the storage tank 1 decreases, and the pump 7 is operated.
Pumps up a part of the stored water 6 in the water storage tank 1 through the pumping pipe 8 as the water to be disinfected.
The gas is allowed to flow into the closed container 12 from the inlet 18.

It should be noted that the controller 55 may be activated when a predetermined time is reached by on / off control by a timer function. Then, the water to be disinfected which has flowed into the closed container 12 is rectified by the rectifying plate 17 of the rectifying means 13, then filtered by the filter means 14 and flows to the electrolysis chamber 15 side. At this time, the filter means 14 is provided on the downstream side of the rectifying means 13, and the filter means 14 can provide an appropriate resistance to the flow of the water to be disinfected. Even if the length from the water to the electrolysis chamber 15 is shortened, the water to be disinfected can flow toward the electrolysis chamber 15 while the rectification means 13 sufficiently rectifies the water. For this reason, sterilizer 5
The whole can be reduced in size, and the electrolysis chamber 15 can be made sufficiently long.

With the water to be disinfected flowing into the electrolytic chamber 15 of the sealed container 12, a voltage is applied between the electrodes 22 and 23 from the large-capacity power supply unit 53 or the small-capacity power supply unit 54 by the control unit 55. 12
The chloride contained in the water to be disinfected passing through the
Electrolyze between. That is, since the water to be disinfected is tap water and salt remains in the water to be disinfected, each of the electrodes 22, 23
When a direct current is applied between the electrodes 22, 23, Cl ₂ is generated at the anode and NaOH is generated at the cathode, and both react to form sodium hypochlorite NaClO, which is dissolved in the water to be disinfected. I do. Then, since the water to be disinfected after electrolysis is returned to the stored water 6 in the water tank 1, the residual chlorine value of the water to be disinfected can be increased by utilizing the salt in the stored water 6, and the residual chlorine can be increased. It is possible to prevent the chlorine value from decreasing over time.

Therefore, even in the case of tap water, if the residual chlorine value becomes 0.1 ppm or less and the disinfecting power is reduced while staying in the water storage tank 1, if pathogenic bacteria in the air enter together with the rainwater. The water quality decreases as it breeds,
The sodium chloride that is generated during electrolysis of the water to be disinfected by directly using the chlorides remaining in the water
For example, the residual chlorine value of the stored water 6 in the storage tank 1 is always kept at, for example, 0.15 ppm or more, and the deterioration of the quality of the stored water 6 in the water storage tank 1 can be prevented.

A detection signal from the flow meter 57 when the inflow of water into the storage tank 1 is stopped, or a detection signal from the residual salt meter 58 when the residual chlorine value of the storage water 6 in the storage tank 1 is reduced. According to the signal, the stored water 6 in the water storage tank 1 is automatically pumped up by the pump 7 and the chloride contained in the water to be disinfected is directly electrolyzed.
Operation and management are very easy.

In addition, a part of the stored water 6 in the water storage tank 1 is pumped up by the pump 7 to be used as the water to be disinfected.
The stored water 6 can be selectively disinfected, and the accumulated water can be purified. In particular, by selecting a pumping point and a return point of the storage water 6, the storage water 6 in the water storage tank 1 can be efficiently treated.

When the residual chlorine concentration of the tap water is low and the salt content is insufficient during electrolysis at the terminal side of the water supply, or the water is stored for a long time without flowing into the water storage tank 1. When the stored water 6 is stored in the tank 1, the element 21 of the filter means 14 is used for strengthening minerals. When the water to be disinfected passes through the element 21, chloride ions are contained in the water to be disinfected. By eluted, chlorine ions can be added to the water to be disinfected to strengthen the minerals.

For this reason, even if the chlorine ions in the water to be disinfected tend to be insufficient, the electrolysis effect at the time of electrolysis in the electrolysis chamber 15 is improved, and the hypochlorite can be generated. The disinfection effect can be stably maintained or continued for a long period of time.

When the inflow water is stopped and the stored water 6 remains in the water storage tank 1, if the electrolysis is continued for a long time, the residual salt in the stored water 6 is consumed. At the end, the concentration gradually decreases, and eventually the production of sodium hypochlorite becomes impossible. Therefore, if the stored water 6 in the water storage tank 1 is left in a state where the disinfection is stopped, the disinfecting power of the stored water 6 is rapidly reduced, and water quality is deteriorated due to contamination with pathogenic bacteria and the like, resulting in pollution. There is fear.

Accordingly, even after the salt water in the storage water 6 in the water storage tank 1 has been depleted and the production of sodium hypochlorite has become impossible,
The application of voltage to each of the electrodes 22 and 23 is continued to switch from electrolysis of chloride to electrolysis of the water to be disinfected itself, and oxygen and hydrogen are generated by the electrolysis. Then, while performing the disinfection of the water to be disinfected by the oxygen generated during the electrolysis (oxidative disinfection by contact oxidation), the water to be disinfected containing a large amount of oxygen after the electrolysis is returned to the storage water 6 in the water storage tank 1. Then, the stored water 6 in the water storage tank 1 is entirely disinfected. Among the oxygen generated during electrolysis, the oxygen atoms in the generation stage have particularly strong oxidizing power, and can instantaneously and directly oxidize and disinfect the water to be disinfected.

Therefore, the stored water 6 having a reduced residual chlorine concentration
Even if water is stored in the water storage tank 1 for a long time while the inflow water is stopped, the oxidative disinfection of oxygen generated at the time of electrolysis prevents or suppresses the propagation of pathogenic bacteria, etc. Water tank 1
There is no problem even if the stored water 6 is used as drinking water.

If the oxygen generated by the electrolysis is left open to the atmosphere, it diffuses into the atmosphere while bubbling through the water and disappears. However, since the water to be disinfected is electrolyzed in the closed container 12, it is electrolyzed. The water moves along with the water to be disinfected in the closed container 12 while bubbling in the water to be disinfected to disinfect the water to be disinfected.

Therefore, the water to be disinfected can be sufficiently disinfected by oxygen, and a large amount of oxygen dissolves in the water to be disinfected, so that the dissolved oxygen concentration in the water to be disinfected becomes large, and the water to be disinfected becomes effective for living organisms. Good water can be transferred to the product.
In addition, the water particles to be disinfected are made finer by the electrolysis, and the water can be made more effective for living organisms.

Then, the water to be disinfected after the electrolysis is returned from the sealed container 12 into the stored water 6 in the water storage tank 1, and is sequentially circulated between the water storage tank 1 and the disinfecting device 5.
Electrolyze the water to be disinfected pumped in step 7 to disinfect and improve the quality of the stored water 6 in the water tank 1.

At the time of electrolysis, a DC voltage is applied between the electrodes 22 and 23. On / off control is performed by a signal from the control unit 55. That is, if there is an ON signal from the control unit 55, a large voltage is supplied between the electrodes 22 and 23 from the large-capacity power supply unit 53 and a large current flows.
A small voltage is supplied between 2,23 and a small current flows. For this reason, it is possible to prevent wasteful consumption of electric power and to prevent the electrodes 22, 23 from being consumed.
It is possible to prevent its own deterioration and wear.

Further, at the time of ON, the phase inverting section 52 operates by an inversion signal from the control section 55 to intermittently invert the phase of the voltage applied to the electrodes 22 and 23, so that the scale of the hardness component attached to the cathode side is reduced. Can be electrically eluted, and the initial performance can be maintained while reducing maintenance. Hydrogen and oxygen are generated in the electrolysis chamber 15 during electrolysis of the water to be disinfected.Especially oxygen can be used to improve the water quality, but the state of the bubbling of oxygen and the condition of the electrodes 22 and 23 can be seen through the inspection window 44. For example, it can be easily visually inspected even from the outside of the sealed container 12.

If the disinfecting device 5 having such a configuration is used,
The stored water 6 in the water storage tank 1 can be stably disinfected with residual chlorine, and even after the residual chlorine concentration decreases and the disinfecting power due to residual chlorine is lost, the water to be disinfected is disinfected with oxygen and Good water can be obtained. Therefore,
It is easy to sanitize the stored water 6 in the water storage tank 1 at the end of the water supply, and when natural water is used as drinking water, the raw water is passed through the disinfector 5 to prevent accidents caused by waterborne pathogens. Can be prevented.

FIG. 7 illustrates a second embodiment of the present invention. As shown in FIG. 7, a part of the stored water 6 entering the water storage tank 1 from the inlet pipe 2 is treated as water to be disinfected by the pipe 75 to the disinfecting apparatus 5, and then treated through the pipe 76 into the outlet pipe 3. Alternatively, the stored water 6 from the water storage tank 1 and the water to be disinfected after treatment may be mixed and sent to a water faucet.

FIG. 8 illustrates a third embodiment of the present invention. When the well 63 is used as a drinking water source, as shown in FIG. 8, the well water 64 is pumped up by a pump 66 via a pump pipe 65.
A disinfector is installed in the middle of the pipe that supplies water to each hydrant via the water pipe 67.
You only need to interpose 5. In the case of the well water 64, usually, there is no chloride contained, or even if there is a very small amount of the contained chloride, if the element 21 of the filter means 14 is used for adding chloride, the electrode 22 can be used. , 23 during the electrolysis, the well water 64 can be disinfected.

If no chloride is added, the well water 64 itself is electrolyzed, and the oxygen generated during the electrolysis can disinfect the well water 64 and improve the water quality. In any of these cases, the well water 64 can be disinfected in the middle of the piping while the well water 64 is being pumped and supplied. In addition,
In the case of the well 63 as well, similarly to the water storage tank 1 in FIG. 1, the disinfecting device 5 may be provided in a circulation path in which the well water 64 pumped from the well 63 is returned to the well 63 again.

FIG. 9 illustrates a fourth embodiment of the present invention. In fields other than drinking water, it can be used to purify water in appreciation ponds and pools. For example, as shown in FIG. 9, water 78 from a pond 77 or the like is dispensed by a water pump 79 through a water pipe 80 by a water pump 79.
The water is then electrolyzed by the disinfecting device 5, and the sterilized water having an increased dissolved oxygen concentration is returned to the pond via the return pipe 81. If this is continued, the water 78 in the pond 77 and the like can be purified by the circulation.

FIG. 10 illustrates a fifth embodiment of the present invention, which is used for agricultural purposes. That is, as shown in FIG. 10, the water from the water tap 82 is led to the disinfecting device 5 via the hose 83, and the water treated by the disinfecting device 5 is supplied to the hose 84 and the solenoid valve.
The water is sent to a watering pipe 86 via 85, and water is sprayed on the plant from the nozzle 87. Watering control is performed by turning on / off the electromagnetic valve 85 with a timer or the like.

By doing so, it is possible to promote plant growth and enhance health. Therefore, there is an advantage that the amount of pesticide sprayed at the golf course can be saved. In addition, the present invention
In addition to those shown in each embodiment, the present invention can be used for applications such as binary water supply, miscellaneous water, sewage treatment water, industrial water, and the like, whereby additional disinfection can be performed. It can also be used for disinfecting drinking water in an installed drinking water tank at a disaster recovery site or the like.

[0053]

According to the first aspect of the present invention, the closed vessel in which the inflow port 18 is formed on one end side and the outflow port 45 is formed on the upper end on the other end side, and the inside is the electrolysis chamber 15. 12 and in the electrolysis chamber 15 of this closed container 12, in the longitudinal direction along the flow direction of the water to be disinfected, so that the water to be disinfected flowing from the inlet 18 flows toward the outlet 45 through the electrolysis chamber 15. Placed electrodes 22,2
3 are provided at predetermined intervals in a direction orthogonal to the flow direction, and a waterproof power supply for connecting the electrodes 22 and 23 to the power cable 28 in the closed vessel 12 closer to the outlet 45 than the electrolysis chamber 15. A terminal portion 16 is provided, in a closed vessel 12 between the inflow port 18 and the electrolysis chamber 15, a rectification means 13 for rectifying the water to be disinfected flowing from the inflow port 18 to the electrolysis chamber 15 side, and a downstream of the rectification means 13. Since the filter means 14 for filtering the water to be disinfected is provided on the side, the following remarkable effects are obtained.

An inflow port 18 is formed at one end, and an outflow port 45 is formed at an upper portion of the other end. The closed vessel 12 has an electrolysis chamber 15 inside. , The water to be disinfected that flows in through the inlet 18 flows out through the electrolytic chamber 15 and outflows.
A plurality of electrodes 22, 23, which are arranged in the vertical direction along the flow direction of the water to be disinfected at predetermined intervals in a direction orthogonal to the flow direction so as to flow toward the 45th side, and hermetically close the electrolytic chamber 15. Since the water to be disinfected is passed from one end side of the closed container 12 to the other end side, the disinfected water is electrolyzed and disinfected while the water to be disinfected passes through the closed container 12. Can be.

Since it is a closed type using the closed container 12, it is not necessary to immerse it in the water to be disinfected as in the related art.
It can be easily installed at any location, such as outside the water storage tank 1, etc., and maintenance such as maintenance, inspection, and cleaning is easy.

Since the outlet 45 is formed in the upper part of the closed container 12, the gas generated during the electrolysis between the electrodes 22 and 23 is supplied to the outlet 45 despite the closed type using the closed container 12. The gas can be easily extracted from the side, and the accumulation of gas in the sealed container 12 and the decrease in electrolysis efficiency due to an increase in gas in the sealed container 12 can be prevented.

Since the waterproof power supply terminal 16 for connecting the electrodes 22 and 23 to the power cable 28 is provided in the closed container 12, the power supply terminal 16 is attached to the outside of the closed container 12 as in the case where the power supply terminal 16 is attached to the outside. It is not necessary to separately provide a box for a power supply terminal or the like, and the entire structure can be simplified.

Since the power supply terminal 16 is closer to the outlet 45 than the electrolytic chamber 15, the power supply terminal 16 is
Despite being inside 12, the power terminal 16 is the inlet
There is no obstruction of the water to be disinfected coming in from 18. Therefore, the power supply terminal section
It is also possible to provide 16, so that the electrodes 22, 23 and the power cable 28 can be easily connected.

A sealed container between the inlet 18 and the electrolytic chamber 15
Within 12, there is provided a rectifying means 13 for rectifying the water to be disinfected flowing from the inflow port 18 to the electrolysis chamber 15 side, and a filter means 14 for filtering the water to be disinfected on the downstream side of the rectifying means 13,
The water to be disinfected without foreign substances can be evenly flowed between the electrodes 22 and 23 in the electrolysis chamber 15.

The filter means 14 is located downstream of the rectifying means 13, and the filter means 14 can provide resistance to the flow of the water to be disinfected. The rectification effect of the rectification means 13 can be improved while shortening the length up to 15. For this reason, the whole can be reduced in size, and at the same time, the drift of the water to be disinfected in the electrolytic chamber 15 can be prevented.

According to the second aspect of the present invention, in the first aspect of the present invention, chloride is added to the water to be disinfected in the closed vessel 12 on the inflow port 18 side of the electrolytic chamber 15. The provision of the substance adding means 14 provides the following remarkable effects.

Since there is water 14 to be disinfected with chloride,
Even in the case of the water to be disinfected, where chlorides tend to be insufficient, hypochlorite can be generated by the electrolysis to obtain a disinfecting power.

Since chloride is added to the water to be disinfected in the closed vessel 12 on the inlet 18 side of the electrolysis chamber 15 by the chloride adding means 14, the chloride is added to the water in the water storage tank 1. In comparison, the consumption of chloride is reduced, and wasteful consumption of chloride can be prevented.

According to the third aspect of the present invention, in the first or second aspect of the present invention, the outlet 45 is connected to the outlet pipe 10.
The outlet pipe 14 is provided with a water outlet portion 47 through which water to be disinfected after electrolysis is discharged, and a gas discharge portion 48 that discharges gas generated during electrolysis. To play.

When the gas generated during the electrolysis leaves the outflow pipe 10, it can be separated into the water to be disinfected and the gas by the outflow pipe 10.

According to the fourth aspect of the present invention, in the first, second or third aspect of the present invention, the electrodes 22 and 23 are held at predetermined intervals above and below the closed container 12. Since the members 24 and 25 are provided and the gas passage 38 in the flow direction of the water to be disinfected is formed between the upper spacing member 24 and the upper wall 36 of the closed container 12, the following remarkable effects are obtained. To play.

The vertical spacing member 2 in the closed container 12
4, 25, and each of the electrodes 22,
Since the distance between the electrodes 23 and 23 is maintained from both upper and lower sides, the distance between the electrodes 22 and 23 can be easily maintained constant.

Since the gas passage 38 in the flow direction of the water to be disinfected is formed between the upper spacing member 24 and the upper wall 36 of the closed container 12, the spacing member 24 is provided above the electrodes 22 and 23.
Gas can be prevented from accumulating on the upper wall 36 side in the sealed container 12 and gas generated during electrolysis can be discharged to the outlet 45.
Can be easily removed from

[Brief description of the drawings]

FIG. 1 is a partially broken front view in the case of additional disinfection showing a first embodiment of the present invention.

FIG. 2 is a perspective view of the disinfecting device showing the first embodiment of the present invention.

FIG. 3 is a cross-sectional view of the disinfecting apparatus according to the first embodiment of the present invention.

FIG. 4 is a perspective view showing the inside of the disinfecting apparatus according to the first embodiment of the present invention.

FIG. 5 is an enlarged view shown by an arrow AA in FIG. 3;

FIG. 6 is a block diagram of a power control unit according to the first embodiment of the present invention.

FIG. 7 is a configuration diagram showing a second embodiment of the present invention.

FIG. 8 is a configuration diagram showing a third embodiment of the present invention.

FIG. 9 is a configuration diagram showing a fourth embodiment of the present invention.

FIG. 10 is a configuration diagram showing a fifth embodiment of the present invention.

[Description of sign]

 1 Reservoir 10 Outflow pipe 12 Closed vessel 13 Rectifying means 14 Filter means (chloride adding means) 15 Electrolysis chamber 18 Inlet 22,23 Electrode 24,25 Spacing member 28 Power cable 36 Upper wall 38 Gas passage 45 Outlet 47 Water outlet

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁶ Identification number Agency reference number FI Technical indication location C02F 1/50 550 C02F 1/50 550D 560 560F 1/76 1/76 A

Claims (4)

(57) [Claims] A closed vessel (12) having an inflow port (18) at one end and an outflow port (45) at the top of the other end, and having an interior as an electrolysis chamber (15). In the electrolysis chamber (15) of the closed vessel (12), the flow direction of the water to be disinfected is such that the water to be disinfected flowing from the inlet (18) flows through the electrolysis chamber (15) to the outlet (45) side. A plurality of electrodes (22) and (23) arranged vertically along the flow direction are provided at predetermined intervals in a direction orthogonal to the flow direction, and a closed vessel closer to the outlet (45) than the electrolytic chamber (15). (12) Within the electrode
(22) A waterproof power supply terminal (16) for connecting the power supply (28) to the power supply cable (28) is provided.In a sealed container (12) between the inlet (18) and the electrolytic chamber (15), Rectifying means (13) for rectifying the water to be disinfected flowing from the inflow port (18) to the electrolysis chamber (15), and filter means for filtering the water to be disinfected downstream of the rectifying means (13)
(14) A flowing water type water electrolysis type disinfecting apparatus characterized in that: 2. Chloride addition means (14) for adding chloride to water to be disinfected in a closed vessel (12) closer to the inlet (18) than the electrolysis chamber (15) is provided. A running water type water electrolysis disinfector according to claim 1. 3. An outflow pipe (10) is connected to an outflow port (45), and a water outlet section (47) through which the water to be disinfected after electrolysis is discharged.
The flowing water type electrolyzer according to claim 1 or 2, further comprising a gas discharge part (48) for discharging gas generated during electrolysis. 4. An electrode (22) (2)
3) Provide interval holding members (24) and (25) for holding at a predetermined interval,
3. A gas passage (38) in the direction of flow of water to be disinfected is formed between the upper spacing member (24) and the upper wall (36) of the closed vessel (12). Or a running water type water disinfecting apparatus according to item 3.