JP3477908B2 - Ion water generator - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention electrolyzes tap water to obtain drinking alkaline ionized water, weakly acidic ionized water having an astringent effect, and various strongly acidic ionized water having disinfecting and sterilizing effects. The present invention relates to an ionized water generator for producing water, and more particularly to a technology of a flow path switching mechanism, a salt adding means, an electrolytic cell, and the like.

[0002]

2. Description of the Related Art In recent years, alkaline ionized water purifiers are more effective than alkaline ionized water due to indigestion, excessive gastric acid, antacid, chronic diarrhea, abnormal gastrointestinal fermentation, and acidic skin tightening effect of astringent. , Is attracting attention as a medical device. The alkaline ionized water conditioner is, for example, a batch type disclosed in Japanese Utility Model Application Laid-Open No. 50-64643, which also serves as a tank for storing the generated alkaline ionized water and acidic ionized water, and is disclosed in, for example, Japanese Patent Laid-Open No. 5
The continuous type and the like disclosed in JP-A-1-18276 are known.

On the other hand, an acidic ionized water generator for producing strongly acidic ionized water (sterilized water) has been conventionally used for foods, kitchens and sanitary conditions for hand washing. Recently, this acidic ionized water generator has been attracting attention as a substitute for agricultural chemicals for hospitals and golf courses related to MRSA.

[0004]

However, in spite of the useful effects of various kinds of ionized water as described above, the conventional alkaline ionized water conditioner has a conventional alkaline ionized water and a weakly acidic ionized water ( Astringent water), whereas conventional acidic ionized water generators (sterilized water generators) only generate strongly acidic ionized water (sterilized water). Technically, both alkaline ionized water conditioner and acidic ionized water generator produce various kinds of ionized water by applying electrolysis of water, but alkaline ionized water, weakly acidic ionized water, strongly acidic ionized water There was no device capable of producing all the ionized water of the above, and selectively producing each of the ionized water as required. The reason is that the alkaline ionized water conditioner is approved as a medical device, but the acidic ionized water generator is not approved as a medical device.
However, further technical problems include the following salt addition method, particularly in connection with chlorine generation, and the reason related to the electrolytic cell.

(1) Since the salt addition means for increasing the residual chlorine concentration in the sterilized water (strongly acidic ionized water) is a pump injection method, it has the advantage of being easy to control the addition amount, but at the cost Also, it was necessary to perform frequent maintenance. (2) In the electrolytic cell for an alkaline ionized water conditioner, when sterilized water is generated, electrolyzing electrolyzed water having a high conductivity to which salt is added increases the current by about 10 times, which increases the size of the power supply device. . On the other hand, when alkaline ionized water is generated in the electrolytic cell for the acidic ionized water generator, the current value is about 1/10, and the electrolytic performance is poor.

The present invention has been made in view of the above conventional problems, and an object thereof is an electrolytic cell capable of controlling salt addition with a simple structure and efficiently generating chlorine by the structure of an electrode material. The alkaline ionized water for drinking, the weakly acidic ionized water having the astringent effect, and the strongly acidic ionized water having the disinfecting and sterilizing effect can be efficiently produced, and each of the ionized water can be produced as needed. It is to provide an ionized water generator that can be selectively generated.

[0007]

In order to solve the above problems, the present invention relates to an ion water generator equipped with an electrolytic cell 2 for electrolyzing tap water or the like to generate alkaline ionized water and acidic ionized water. While the salt adding means 3 for adding salt to the electrolyzed water is arranged upstream of the inlets 9 and 10 of the electrolytic cell 2, and downstream of the outlets 25 and 26 of the electrolytic cell 2,
A residual chlorine removing means 4 for decomposing and removing residual chlorine in the electrolyzed water is arranged in a bypass flow passage 33 branched from a part of the water discharge side flow passage 30, and the water discharge side flow passage 30 and the bypass flow passage 33 are mutually connected. It is characterized in that the flow path switching valve 6 for switching to is arranged.

Here, the salt adding means 3 has a salt filling portion 3a filled with salt and a lead-out pipe 15 connecting the salt filling portion 3a and the flow passage 12 of the electrolyzed water, and the lead-out pipe. It is preferable that 15 is composed of a thin tube. Further, the salt adding means 3 connects the salt filling portion 3a filled with salt and the lead-out pipe 1 connecting the salt filling portion 3a and the flow passage 12 of the electrolyzed water.
5, and the inside of the outlet pipe 15 is a porous ceramic 50.
It is preferable to shield with.

The salt adding means 3 has a salt filling portion 3a filled with salt, and a lead-out pipe 15 connecting the salt filling portion 3a and the flow path 12 of the electrolyzed water, and the lead-out pipe 1
It is preferable that the inside of 5 is covered with a non-woven fabric 51. Further, the salt adding means 3 has a salt filling portion 3a filled with salt, and a lead-out pipe 15 connecting the salt filling portion 3a and the flow path 12 of the electrolyzed water, and the inside of the lead-out pipe 15 is filled with salt water. It is preferable that the salt water permeation member 52 that permeates the water is shielded, and a part of the salt water permeation member 52 is projected into the water flow path 12 of the electrolyzed water.

Further, the salt adding means 3 has a salt filling portion 3a filled with salt, a lead-out pipe 15 connecting the salt filling portion 3a and the flow path 12 of the electrolyzed water, and the salt filling portion 3a. A cylinder 54 having a built-in piston 55 for pushing out salt is provided in a part of the cylinder 54.
Preferably, the end portion 54a of a side connecting the ends 54b of the opposite side to the upstream portion P ₂ than the connecting point P ₁ between the outlet pipe 15 in the water flow path 12 of the electrolytic water.

Further, the flowing passage 12 for the electrolyzed water is branched from a part of the main flowing water system passage 8 on the downstream side of the inflow ports 9 and 10 of the electrolytic cell 2, and the branched flowing passage for the electrolyzed water is provided. 12
It is preferable to have an opening / closing valve 11 for passing or shutting off water. The electrolytic cell 2 is divided into an anode chamber 21 and a cathode chamber 22 by an electrolytic diaphragm 20, and an electrode 23 in which a titanium base material is surface-treated with a mixture of platinum and a platinum group oxide in the anode chamber 21.
It is preferable that the cathode 24 be accommodated in the cathode chamber 22 and the electrode 24 in which the titanium base material is surface-treated with platinum is accommodated in the cathode chamber 22.

[0012]

According to the present invention, since the salt adding means 3 for adding salt to the electrolyzed water is arranged on the upstream side of the inflow ports 9 and 10 of the electrolysis tank 2, when strongly acidic ionized water is to be produced, By adding salt to the electrolyzed water and sending it to the electrolytic bath 2 to generate acidic ionized water in the electrolytic bath 2, the acidic ionized water flowing out from the electrolytic bath 2 contains a large amount of chlorine, and the discharge side flow passage 30 Water can be discharged as sterilized water having a high residual chlorine concentration.

Further, a residual chlorine removing means for decomposing and removing residual chlorine in the electrolyzed water is provided in a bypass passage 33 branched from a part of the water discharge side passage 30 on the downstream side of the outlets 25, 26 of the electrolytic cell 2. 4 and the flow path switching valve 6 for switching between the water discharge side flow path 30 and the bypass flow path 33 are arranged. Therefore, when weak acidic ionized water is to be generated, electrolyzed water to which salt is not added is electrolyzed. By sending to the tank 2 to generate acidic ionized water in the electrolytic tank 2 and operating the flow path switching valve 6 to send the acidic ionized water to the bypass flow path 33, the residual chlorine removing means 4 allows the residual chlorine ionized water to remain. Since chlorine is decomposed and removed, water can be discharged as astringent water having a low residual chlorine concentration. On the other hand, when it is desired to generate alkaline ionized water, the electrolyzed water to which salt is not added is sent to the electrolytic bath 2, alkaline ionized water is generated in the electrolytic bath 2, and the flow path switching valve 6 is not operated. Alkaline ionized water suitable for drinking can be discharged from the flow path 30.

[0014]

Embodiments of the present invention will be described below with reference to the drawings. The ion water generator 1 of the present embodiment is an electrolytic cell 2 for electrolyzing tap water or the like with a diaphragm to generate alkaline ionized water and acidic ionized water, and salt used for increasing the residual chlorine concentration in the acidic ionized water. Addition means 3, residual chlorine removal means 4 used when decomposing and removing residual chlorine in acidic ionized water, alkaline ionized water, weakly acidic ionized water (hereinafter referred to as "astrinsent water"), and strong acid from spout 5. The flow path switching valve 6 is configured to select and discharge water of ionized water (hereinafter referred to as “sterilized water”).

In FIG. 1, raw water such as tap water is introduced from the lower part of the water purification cartridge 7 and, after being purified, from the upper part of the water purification cartridge 7 to the main running water passage 8 of the electrolytic cell 2.
Is discharged to. A part of the main flowing water passage 8 of the electrolytic cell 2 is branched upstream of the inlets 9 and 10 of the electrolytic cell 2, and an electromagnetic opening / closing valve 11 is arranged at this branching portion. A flow passage 12 of the electrolyzed water branched from the main flowing water passage 8 (hereinafter, referred to as "saline addition bypass passage 12") is opened or closed by opening / closing 11.

A salt filling section 3a, which is the salt adding means 3, is disposed in the salt adding bypass passage 12. In this embodiment, as shown in FIG. 2, the salt filling portion 3a is detachably attached to a salt solution addition cylinder 13 filled with salt and an upper opening of the salt solution addition cylinder 13 and is airtight by an O-ring 40. And a lead-out pipe 15 drawn out from the bottom surface of the saline-water addition cylinder 13. The lead-out pipe 15 is composed of a thin pipe, and the lower end of the thin pipe is connected to the thin pipe portion 12a of the salt addition bypass flow passage 12, and the salt water addition cylinder 13 and the salt addition bypass flow passage 12 are connected by the thin pipe. It also has a so-called alpirator structure.

The main running water system passage 8 is connected to the inflow port 10 on the cathode chamber 22 side of the electrolytic cell 2 on the downstream side of the salt addition bypass passage 12 and also downstream of the salt addition bypass passage 12. On the side, a part of the main running water system passage 8 is branched,
It is connected to the inflow port 9 on the anode chamber side of the electrolytic cell 2 via the calcium adding means 16. The electrolytic cell 2 has an electrolytic diaphragm 20.
Is separated into an anode chamber 21 and a cathode chamber 22, and platinum and platinum group oxides (RuO ₂ , Pd) are added to a titanium substrate in the anode chamber 21.
An electrode 23 whose surface is treated with a mixture of O and IrO ₂ ) is built in, while an electrode 24 whose surface is treated with platinum on a titanium base material is built in the cathode chamber 22. Each electrode chamber 2
Inlet ports 9 and 10 at the bottom of 1, 22 and outlet port 25 at the top,
26 are provided respectively. As standard, the diameters of the inlets 9 and 10 and the outlets 25 and 26 are adjusted so that the flow rate on the cathode chamber 22 side is 3.0 L / min and the flow rate on the anode chamber 21 side is 1.0 L / min. There is. Also, each electrode 2
The polarities of 3 and 24 can be reversed by the polarity reversing device 27 (FIG. 1). Reference numeral 28 in FIG. 1 denotes a DC power supply unit.

A first flow path switching valve 6a for switching the discharge side flow path 30 and the drain side flow path 31 of the electrolytic cell 2 to each other is provided downstream of the outlets 25 and 26 of the electrolytic cell 2. A bypass flow passage 33 that is arranged and is branched from a part of the water discharge side flow passage 30 is provided. The bypass flow path 33 is provided with an activated carbon filling section 4a that constitutes the residual chlorine removing means 4. The activated carbon filling portion 4a is filled with fibrous activated carbon, and when the electrolyzed water passes through the fibrous activated carbon, residual chlorine in the electrolyzed water is decomposed and removed. In addition, the water discharge side flow path 3 is provided at the branch portion of the water discharge side flow path 30.
No. 2 for switching between 0 and the bypass channel 33 mutually
The flow path switching valve 6b is arranged.

Next, the operation will be described. First, when it is desired to generate alkaline ionized water, the polarity reversing device 27 of the electrodes 23 and 24 is not operated, and a voltage is applied so that the electrode 23 on the left side in FIG. 3 serves as an anode and the electrode 24 on the right side serves as a cathode. At this time, the on-off valve 11 is closed and the first flow path switching valve 6a is
The second flow path switching valve 6b is not operated, and the electrolytic water is not supplied to the bypass flow path 33 in which the activated carbon filling section 4a is arranged. As a result, the tap water passes through the purification cartridge 7, is electrolyzed with a diaphragm in the electrolytic cell 2 without adding salt, and (+) ions containing a mineral component such as calcium are collected in the cathode 24, and the electrolytic cell is electrolyzed. Outlet 2 of 2
Alkaline ionized water flows out from 6, and is discharged to the water discharge port 5 from the water discharge side flow passage 30 without passing through the activated carbon filling portion 4a. This alkaline ionized water is suitable as drinking water or food as mineral water. In addition, in the electrolytic bath 2, (−) ions are generated at the anode 23 at the same time when the alkaline ionized water is generated.
The acidic ionized water is generated by gathering at, and this acidic ionized water is drained from the drain side flow path 31 to the drain port 32.

Next, when it is desired to generate astringent water, the polarity reversing device 27 is operated to apply a voltage so that the electrode 23 on the left side of FIG. 3 becomes the cathode and the electrode 24 on the right side thereof becomes the anode. At this time, the on-off valve 11 is closed, the first flow path switching valve 6a is not operated, and only the second flow path switching valve 6b is operated, and the electrolytic water is bypassed with the activated carbon filling section 4a. Supply to the flow path 33. As a result, tap water passes through the purification cartridge 7, is electrolyzed with a diaphragm in the electrolytic cell 2 without adding salt, and the outlet 26 of the electrolytic cell 2 is discharged.
The acidic ionized water flows out from the above, and further passes through the bypass channel 33 to the activated carbon filling portion 4a. At this time, since the electrolyzed water passes through the inside of the activated carbon filling portion 4a, the residual chlorine in the electrolyzed water is decomposed and removed by the fibrous activated carbon.
From the spout 5, astringent water (weakly acidic ionic water)
Is spouted. This alkaline ionized water has, for example, an astringent effect for tightening the skin, and can be widely used for medical purposes.

Next, when it is desired to generate sterilized water, the on-off valve 11 of the salt-adding bypass passage 12 is switched from closed to open. At this time, the polarity reversing device 27 is not operated, and
A voltage is applied so that the electrode 23 on the left side of FIG. Further, the first flow path switching valve 6a is operated to switch between the water discharge side flow path 30 and the drainage side flow path 31. On the other hand, the second flow path switching valve 6b is not switched, and electrolytic water is not supplied to the bypass flow path 33 in which the activated carbon filling section 4a is arranged. As a result, the electrolyzed water that has passed through the purification cartridge 7 flows into the salt addition bypass flow passage 12, and the salt water filled in the salt addition cylinder 13 passes through the thin pipe-derived pipe 15 and the salt addition bypass flow passage 12 is added. It flows in and is added to the electrolyzed water. Therefore, the acidic ionized water flowing out from the outlet 25 of the electrolytic cell 2 contains a large amount of chlorine, and since the acidic ionized water is not passed through the activated carbon filling portion 4a, it is discharged from the outlet 5 as sterilizing water. . This sterilized water is a strongly acidic ionized water having a high residual chlorine concentration, and is widely used for food, kitchens, hand washing hygiene, etc.

Therefore, the alkaline ionized water, the astringent water, and the sterilized water can be operated by one ionized water generator 1 by the opening / closing operation of the opening / closing valve 11 and the switching operation of the first and second flow path switching valves 6a and 6b. Can be selectively discharged from the water discharge port 5. Further, in this embodiment, when the open / close valve 11 is opened to add salt, the outlet pipe 15 of the saline solution addition cylinder 13 is made of a thin tube, so that it is possible to prevent excessive addition of salt and to add salt. As the flow rate of the electrolyzed water in the bypass passage 12 for salt increases, the bypass passage 1 for salt addition
The amount of salt sucked into 2 increases, and the amount of salt added can be automatically adjusted according to the flow rate of electrolyzed water, which is also an advantage that it can sufficiently cope with continuous discharge of sterilized water. is there.

Next, Table 1 shows the experimental results under the same applied voltage, in the case where the surface treatment of the anode is platinum + IrO _{2 and in} the case where only platinum is used.

[0024]

[Table 1]

In Table 1, the residual chlorine concentration in the case of astringent water is shown in parentheses (), when the cathode is the same surface-treated as the anode and the fibrous activated carbon in the activated carbon-filled cylinder is removed. Is the value of. From this experimental result, the current value of the electrode containing IrO ₂ was slightly smaller, and the residual chlorine was generated about twice as much as that containing IrO ₂ .
This is because the overvoltage of IrO ₂ is smaller than that of platinum. This difference in overvoltage is noticeable in the difference in chlorine generation efficiency. Further, it can be seen that when IrO _{2 is} contained, the residual chlorine concentration is higher and the load on the chlorine decomposition in the activated carbon filled cylinder is larger. As a result, it has been confirmed that the combination of the electrode materials of this example can produce the ion water most efficiently.

Another embodiment of the salt adding means 3 is shown in FIGS. It should be noted that the salt filling portion 3a includes a salt water addition cylinder 13 filled with salt, and an addition cylinder lid 14 that is detachably and airtightly sealed in an upper opening of the salt water addition cylinder 13.
It is the same as the embodiment of FIG. 1 in that it is constituted by a lead-out pipe 15 drawn out from the bottom surface of the salt water addition cylinder 13. Figure 4
4A shows the inside of the lead-out pipe 15 of the saline solution addition cylinder 13 shielded by the porous ceramic 50, and FIG. 4B shows the inside of the lead-out pipe 15 of the salt water addition cylinder 13 shielded by the non-woven fabric 51. This porous ceramic 50 or non-woven fabric 51
As a result, too much salt is not added by the method, and as the flow rate of the electrolyzed water in the salt-adding bypass channel 12 increases,
The amount of salt that passes through the porous ceramic 50 or the nonwoven fabric 51 and is sucked into the salt-adding bypass channel 12 increases, and the amount of salt added can be automatically adjusted according to the flow rate of the electrolyzed water.

In FIG. 5A, the inside of the outlet pipe 15 of the salt solution addition cylinder 13 is shielded by a saline solution permeation member 52 for permeating the saline solution, and a part of the saline solution permeation member 52 is bypassed for salt addition. It is made to project into the passage 12. 80 in the figure
Is a holding plate. In the present embodiment, the core 52a impregnated with salt such as felt material is shown as the salt water permeation member 52, but other than this, for example, a bag-shaped cylindrical body such as a mesh or porous ceramic 50 that exudes salt water. Such a thing may be arrange | positioned in the lead-out pipe 15 so that the salt solution addition cylinder 13 and the salt addition bypass flow path 12 may not be short-circuited. Further, by projecting a part 52b of the core 52a toward the salt addition bypass flow passage 12, the diameter of the salt addition bypass flow passage 12 can be reduced, and the salt addition amount can be increased.

FIG. 5B shows a portion of the saline-added cylinder 13.
A system with a built-in piston 55 and spring 53 that push out salt.
The cylinder 54 is provided with a salt filling portion 3a of the cylinder 54.
The end 54b on the side opposite to the end 54a on the side
With the outlet pipe 15 in the thin tube portion 12a of the ipas flow path 12,
Connection point P₁Upstream of P₂Connected to
It In this way, the bypass flow path 12 for salt addition and the silin
Connection point P with da 54 ₂By-pass flow path 1 for salt addition
Connection point P between 2 and outlet pipe 15₁Placed more upstream
Therefore, the flow rate of the electrolyzed water in the salt addition bypass channel 12
Is larger, both connection points P₁, P₂Large pressure difference
As a result, the pressure applied to the piston 55 is also large.
Therefore, the salt addition amount also increases, and
Therefore, the amount of salt added can be adjusted automatically.

[0029]

As described above, the invention of claim 1 is an ion water generator equipped with an electrolytic cell for electrolyzing tap water or the like to generate alkaline ionized water and acidic ionized water. While arranging a salt addition means for adding salt to the electrolyzed water on the upstream side of the inlet, on the downstream side of the outlet of the electrolytic cell, in the bypass flow path branched from a part of the discharge side flow path Since the residual chlorine removing means for decomposing and removing the residual chlorine is arranged, and the flow passage switching valve for switching between the water discharge side flow passage and the bypass flow passage is arranged, salt is added to the electrolyzed water to produce an electrolytic cell. To generate strong acidic ionized water (sterilized water) with a high residual chlorine concentration from the water discharge side flow path, by generating acidic ionized water in the electrolytic cell,
In addition, the electrolyzed water to which salt is not added is sent to the electrolyzer to generate acidic ionized water in the electrolyzer, and the flow path switching valve is operated to send the acidic ionized water to the bypass channel, thereby removing residual chlorine. The residual chlorine in the acidic ionized water is decomposed and removed by this, and it can be discharged as weak acidic ionized water with low residual chlorine concentration (astrindent water). Also, the electrolyzed water to which salt is not added is sent to the electrolytic cell and By generating the alkaline ionized water and not operating the flow path switching valve, the alkaline ionized water suitable for drinking can be discharged from the water discharge side flow path. Therefore, the alkaline ionized water, the astringent water, and the sterilized water can be selectively discharged from the water discharge port with one ionized water generator.

According to a second aspect of the present invention, the salt adding means according to the first aspect includes a salt filling portion filled with salt, and a lead-out pipe connecting the salt filling portion and a flowing passage of the electrolyzed water. In addition to the effect according to claim 1, since the lead-out pipe is constituted by a thin tube, the salt is not excessively added by the thin tube, and the electrolyzed water is increased as the flow rate of the electrolyzed water is increased. The amount of salt that is sucked into the running water channel of the system increases, and the amount of salt added can be automatically adjusted according to the flow rate of the electrolyzed water, which is sufficient for continuously discharging sterilized water. Is.

According to a third aspect of the present invention, the salt adding means according to the first aspect includes a salt filling portion filled with salt, and a lead-out pipe connecting the salt filling portion and the flowing passage of the electrolyzed water. In addition to the effect according to claim 1, since the inside of the outlet pipe is shielded by the porous ceramic, too much porous ceramic salt is not added, and the flow rate of the electrolyzed water increases, The amount of salt that passes through the porous ceramic or non-woven fabric and is sucked into the flow path of the electrolyzed water increases, and the salt addition amount can be automatically adjusted according to the flow rate of the electrolyzed water. It becomes possible to sufficiently cope with the case where water is continuously discharged.

According to a fourth aspect of the present invention, the salt adding means according to the first aspect includes a salt filling portion filled with salt, and a lead-out pipe connecting the salt filling portion and a flowing passage of the electrolyzed water. Since the inside of the outlet pipe is covered with a non-woven fabric, in addition to the effect of claim 1, too much salt is not added by the non-woven fabric, and the flow rate of the electrolyzed water increases,
The amount of salt that passes through the porous ceramic or non-woven fabric and is sucked into the flow path of the electrolyzed water increases, and the salt addition amount can be automatically adjusted according to the flow rate of the electrolyzed water. It becomes possible to sufficiently cope with the case where water is continuously discharged.

According to a fifth aspect of the present invention, the salt adding means according to the first aspect includes a salt filling portion filled with salt, and a lead-out pipe connecting the salt filling portion and a flowing passage of the electrolyzed water. In addition to the effect according to claim 1, since the inside of the outlet pipe is shielded by a saline water permeation member that permeates saline water, and part of the saline water permeation member is projected into the flow passage of the electrolyzed water. As a result, it is possible to increase the amount of salt to be added by preventing excessive addition of salt by the salt water permeation member and by projecting a part of the salt water permeation member toward the flow passage of the electrolyzed water. .

According to the invention of claim 6, the salt adding means according to claim 1 is a salt filling portion filled with salt, and a lead-out pipe connecting the salt filling portion and a flowing passage of the electrolyzed water. And a cylinder having a built-in piston for pushing out salt in a part of the salt filling portion, and the end of the cylinder opposite to the salt filling portion side end is a lead-out pipe in the flow passage of the electrolyzed water. Since it was connected to the upstream position rather than the connection point with
In addition to the effect according to claim 1, as the flow rate of the electrolyzed water increases, the pressure difference between the two connection points increases, and as a result, the pressure applied to the piston of the cylinder also increases. The salt addition amount can be automatically adjusted according to the flow rate of the electrolyzed water, and it is possible to sufficiently cope with the case where the sterilized water is continuously discharged.

According to the invention of claim 7, the flowing passage of the electrolyzed water according to any one of claims 2 to 3 is formed from a part of a main flowing water passage communicating with the inlet of the electrolytic cell. In addition to the effect according to any one of claims 2 to 6, opening and closing in addition to the effect according to any one of claims 2 to 6, which is branched and has an opening / closing valve for passing or blocking a flowing water channel of the branched electrolyzed water. You can easily select whether to add salt by opening and closing the valve,
Operability is improved.

According to the invention of claim 8, the anode of the electrolytic cell according to claim 1 is formed by surface-treating a titanium base material with a mixture of platinum and a platinum group oxide, and the cathode is a titanium base material. The surface treatment is performed with platinum, and thus,
In addition to the effects described, the difference in residual chlorine concentration between the cathode side and the cathode side becomes large, which is optimal for efficiently producing strongly acidic ion water and weakly acidic ion water.

[Brief description of drawings]

FIG. 1 is a block diagram of an ionized water generator according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view of the same saline addition cylinder.

FIG. 3 is a sectional view of the electrolytic cell of the above.

4A is a sectional view of another embodiment of the present invention, FIG.
[Fig. 8] is a sectional view of still another embodiment.

FIG. 5A is a sectional view of still another embodiment of the present invention.
(B) is sectional drawing of other Example.

[Explanation of symbols]

2 Electrolyzer 3 Salt Addition Means 3a Salt Filling Section 4 Residual Chlorine Removal Means 6 Channel Switching Valve 8 Main Flow System Channels 9, 10 Inlet 11 On-off Valve 12 Electrolyzed Water Flow Channel 15 Outlet Pipe 20 Electrolytic Diaphragm 21 Anode Chamber 22 Cathode chamber 23, 24 Electrode 25, 26 Outflow port 33 Bypass flow path 50 Porous ceramic 51 Nonwoven fabric 52 Salt water permeation member 54 Cylinder 55 Piston P ₁ , P ₂ Connection location

─────────────────────────────────────────────────── --- Continuation of front page (56) References JP-A-4-330987 (JP, A) JP-A-5-123676 (JP, A) JP-A-6-346266 (JP, A) JP-A-6- 63540 (JP, A) JP 6-39381 (JP, A) JP 6-71261 (JP, A) Actual flat 5-44286 (JP, U) Actual flat 7-21187 (JP, U) (58) Fields investigated (Int.Cl. ⁷ , DB name) C02F 1/46 A61L 2/00

Claims (8)

(57) [Claims] 1. An ion water generator equipped with an electrolytic cell for electrolyzing tap water or the like to generate alkaline ionized water and acidic ionized water, wherein salt is added to electrolyzed water upstream of an inlet of the electrolytic cell. And a residual chlorine removing means for decomposing and removing residual chlorine in the electrolyzed water in a bypass flow path branched from a part of the discharge side flow path, on the downstream side of the outlet of the electrolytic cell. And a flow path switching valve for switching between the water discharge side flow path and the bypass flow path. 2. The salt adding means has a salt filling portion filled with salt and a lead-out pipe connecting the salt filling portion and a flow passage of the electrolyzed water, and the lead-out pipe is constituted by a thin tube. The ionized water generator according to claim 1, wherein 3. The salt adding means has a salt filling portion filled with salt and a lead-out pipe connecting the salt filling portion and a flow passage of the electrolyzed water, and the inside of the lead-out pipe is shielded by a porous ceramic. The ionized water generator according to claim 1, wherein 4. The salt adding means has a salt filling part filled with salt and a lead-out pipe connecting the salt filling part and a flow passage of the electrolyzed water, and the inside of the lead-out pipe is shielded by a non-woven fabric. The ionized water generator according to claim 1, wherein 5. The salt adding means has a salt filling portion filled with salt and a lead-out pipe connecting the salt filling portion and a flow passage of the electrolyzed water, and the salt water is permeated into the lead-out pipe. The ion water generator according to claim 1, wherein the salt water permeation member is shielded, and a part of the salt water permeation member is projected into the flow passage of the electrolyzed water. 6. The salt adding means has a salt filling section filled with salt, and a lead-out pipe connecting the salt filling section and a flow path of the electrolyzed water, and the salt adding section has a salt filling section. A cylinder with a built-in piston for pushing out is provided, and the end opposite to the salt-filled part side end of this cylinder is connected to a position upstream of the connection point with the outlet pipe in the flow path of the electrolyzed water. The ionized water generator according to claim 1, which is characterized in that. 7. The flow channel of the electrolyzed water is branched from a part of the main flow system passage communicating with the inflow port of the electrolysis tank, and the flow channel of the branched electrolyzed water is passed or blocked. 7. The ionized water generator according to claim 2, wherein the ionized water generator has the on-off valve. 8. The electrolytic cell is divided into an anode chamber and a cathode chamber by an electrolytic diaphragm, an electrode having a titanium base material surface-treated with a mixture of platinum and a platinum group oxide is contained in the anode chamber, and titanium is contained in the cathode chamber. The ion water generator according to claim 1, wherein an electrode whose surface is treated with platinum on the substrate is housed.