JP2014008433A - Electrolytic water generator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electrolyzed water generating apparatus capable of generating alkaline ion water having an appropriate pH value and a large amount of dissolved hydrogen.
SOLUTION: Cathode chamber electrode plates 16a and 16b, electrodes for anode chamber, which are divided into a cathode chamber 14a and an anode chamber 14b by diaphragms 15a and 15b and perform electrolysis in each of the cathode chamber 14a and the anode chamber 14b. An electrolytic cell 14 in which a plate 17 is inserted and electrolyzed raw water is generated by electrolysis to generate alkaline ionized water and acidic ionized water, a cathode chamber introducing channel 11 for introducing the raw water into the electrolytic cell 14, and an anode introducing channel 12, a discharge channel 18 for discharging alkaline ionized water generated in the cathode chamber 14a in the electrolytic cell 14, a drain channel 19b for discharging acidic ionized water generated in the anode chamber 14b in the electrolytic cell 14, and an introduction A pH buffer supply unit 10 that supplies the pH buffer to the supplied raw water or alkaline ionized water, and a control unit that controls the strength of electrolysis applied to the electrodes of the electrolytic cell 14. 2 6.
[Selection] Figure 1

Description

  The present invention relates to an electrolyzed water generating device that generates electrolyzed water.

  With the recent increase in interest in safe water and health, an electrolyzed water generating apparatus that generates alkaline ionized water and acidic ionized water by electrolyzing raw water such as tap water in an electrolytic cell is known. This electrolyzed water generating apparatus discharges one of alkaline ionized water and acidic ionized water so as to be usable from the water discharge channel, and discharges the other from the drainage channel. Alkaline water, which is particularly good for health, is used for drinking.

  In recent years, there have been research reports that drinking water with a large amount of dissolved hydrogen is effective in preventing or improving Parkinson's disease, metabolic syndrome, lifestyle-related diseases, and the like. For this reason, an electrolyzed water generator capable of generating alkaline ionized water with a large amount of dissolved hydrogen is desired.

  However, the amount of dissolved hydrogen depends on the strength of electrolysis in the electrolytic cell. For this reason, even if it is going to produce | generate alkali ion water with much dissolved hydrogen amount, pH value becomes high. In order to change alkaline ionized water having a high pH value to water having a pH value suitable for drinking of less than 10, it is necessary to suppress the strength of electrolysis to some extent. This makes it difficult to increase the amount of dissolved hydrogen in alkaline ionized water.

  Therefore, for example, in the technology described in Patent Document 1 below, an electrolyzed water generating device is proposed in which a pH adjuster is added to the alkaline ionized water generated at the cathode to adjust the pH value of the alkaline ionized water to less than 10. Has been.

JP 2009-160503 A

  The electrolyzed water generating apparatus described in Patent Document 1 uses an acidic substance such as citric acid, trisodium citrate, and lemon as a pH adjuster. For this reason, when there is too much addition amount of a pH adjuster with respect to the pH intensity | strength of the produced | generated alkaline ionized water, the produced | generated alkaline ionized water will be neutralized and will become neutral. Furthermore, when there is much addition amount of a pH adjuster, possibility that it may become acidic water also arises.

  Then, this invention is proposed in view of the above-mentioned situation, and it aims at providing the electrolyzed water production | generation apparatus which can produce | generate the alkali ion water with an appropriate pH value and many dissolved hydrogen amounts. And

  The electrolyzed water generating apparatus according to the first aspect of the present invention is divided into a cathode chamber and an anode chamber by a diaphragm, and an electrode for electrolysis for performing electrolysis is inserted into each of the cathode chamber and the anode chamber, An electrolytic cell that electrolyzes the raw water that has been passed through to generate alkaline ionized water and acidic ionized water, an introduction path that introduces the raw water into the electrolytic cell, and alkaline ionized water generated in the cathode chamber in the electrolytic cell PH of the raw water or alkaline ionized water provided in the water supply path for discharging the acidic ion water generated in the anode chamber in the electrolytic cell, and the supplied raw water or alkaline ionized water provided in the water supply path. A pH buffer supply unit for supplying a buffer, and a control unit for controlling the strength of electrolysis applied to the electrode for electrolysis of the electrolytic cell are provided.

  The electrolyzed water generating apparatus according to the second aspect of the present invention is the electrolyzed water generating apparatus according to the first aspect, wherein the pH buffering agent by the pH buffering agent supply unit is based on the pH value of the alkaline ionized water. And an on-off valve capable of adjusting the amount of addition.

  According to the present invention, since the pH buffer is supplied to the raw water or alkaline ionized water, it is possible to generate alkaline ionized water having an appropriate pH value and a large amount of dissolved hydrogen.

It is a block diagram which shows the structure of the electrolyzed water generating apparatus shown as 1st Embodiment of this invention. It is a block diagram which shows the other structure in the electrolyzed water generating apparatus shown as 1st Embodiment of this invention. It is a block diagram which shows the structure of the electrolyzed water generating apparatus shown as 2nd Embodiment of this invention. It is a block diagram which shows the other structure in the electrolyzed water generating apparatus shown as 2nd Embodiment of this invention.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

[First Embodiment]
The electrolyzed water generating apparatus shown as the first embodiment of the present invention is configured, for example, as shown in FIG.

  The electrolyzed water generating apparatus has a main body 3 to which raw water is supplied via a raw water pipe 1 and a faucet 2. A water discharge path 18 for discharging alkaline ion water as electrolyzed water is provided on the upper portion of the main body 3. A drainage channel 19 b for discharging acidic ion water of electrolyzed water is provided at the lower part of the main body 3. The main body 3 is connected to a commercial power supply by a power plug 24 and is driven to generate electrolyzed water.

  In the main body 3, raw water supplied from the raw water pipe 1 via the faucet 2 is introduced into the water purification unit 4. The water purification unit 4 includes an activated carbon that adsorbs residual chlorine, trihalomethane, mold odor, and the like in raw water, a hollow fiber membrane that accurately removes general bacteria and impurities, and the like. The raw water filtered by the water purification unit 4 is introduced into the introduction paths 5a, 5b, and 5c.

  The flow rate of the filtered raw water is detected by the flow rate detection unit 6. The flow rate detection unit 6 outputs the detected flow rate value of the raw water to the control unit 26. The flow rate detection unit 6 also has a function of detecting water flow to the main body unit 3.

  The filtered raw water branches into the introduction path 5c and the introduction path 5b. A portion of the raw water is supplied to the calcium supply unit 8 through the calcium supply unit restriction 7 provided in the introduction path 5c. The calcium supply unit 8 applies calcium ions such as calcium glycerophosphate and calcium lactate to the raw water. Thereby, the calcium supply part 8 raises the electrical conductivity of raw | natural water. The opening 7 of the calcium supply portion restriction 7 is restricted, and restricts the flow rate through the introduction path 5c. The raw water that has passed through the calcium supply unit 8 merges with the raw water in the introduction path 5b and is guided to the introduction path 5d.

  The raw water of the introduction path 5d branches into the introduction path 5e and the introduction path 5f. A part of the raw water is supplied to the pH buffer agent supply unit 10 via the pH buffer agent supply unit throttle 9 provided in the introduction path 5f. The pH buffer supply unit 10 supplies the pH buffer to the raw water. pH buffering agent is pH buffering performance such as bicarbonate such as sodium bicarbonate and potassium bicarbonate, phosphate such as sodium dihydrogen phosphate and potassium dihydrogen phosphate, and acetate such as sodium acetate and potassium acetate. It is an agent having Thereby, the pH buffer supply part 10 exhibits the pH buffering effect on the introduced raw water. The opening of the pH buffer agent supply section throttle 9 is restricted, and restricts the flow rate of the raw water introduced into the pH buffer agent supply section 10. The raw water that has passed through the pH buffering agent supply unit 10 merges with the raw water in the introduction path 5e and is guided to the introduction path 5g.

  The raw water guided to the introduction path 5g is branched from the introduction path 5g and introduced into the first electrode chamber introduction path 11 and the second electrode chamber introduction path 12. A second electrode chamber diaphragm 13 is provided in the second electrode chamber introduction path 12. The second electrode chamber restriction 13 adjusts the flow rate flowing through the second electrode chamber introduction passage 12.

  The raw water that has passed through the first electrode chamber introduction passage 11 and the second electrode chamber introduction passage 12 is supplied to the electrolytic cell 14. The electrolytic cell 14 electrolyzes the raw water that has been passed through. Thereby, the electrolytic cell 14 produces | generates the alkali ion water and acidic ion water as electrolyzed water. The electrolytic cell 14 includes diaphragms 15a and 15b, a first electrode chamber 14a, a second electrode chamber 14b, first electrode chamber electrode plates 16a and 16b, and a second electrode chamber electrode plate 17. The first electrode chamber electrode plates 16a and 16b and the second electrode chamber electrode plate 17 function as electrode chamber electrodes. The diaphragms 15a and 15b divide the electrolytic cell 14 to form a first electrode chamber 14a and a second electrode chamber 14b.

  The electrode plates 16a and 16b for the first electrode chamber are disposed in the first electrode chamber 14a. A voltage is applied to the first electrode chamber electrode plates 16 a and 16 b under the control of the control unit 26. The electrode plates 16a and 16b for the first electrode chamber electrolyze raw water when voltage is applied to generate electrolyzed water. The electrolyzed water in the first electrode chamber 14 a is introduced from the first electrode chamber 14 a into the water discharge path 18 and the water discharge bypass path 21. When the first electrode chamber electrode plates 16a and 16b are cathodes, the water discharge channel 18 discharges alkaline ionized water.

  The water discharge bypass 21 branches from the water discharge 18. The water discharge bypass 21 is provided with a discharge bypass throttle 22 and a pH sensor unit 23. The discharge bypass passage restriction 22 restricts the flow rate through the water discharge bypass passage 21. The pH sensor unit 23 measures the pH value of the water in the first electrode chamber 14a. The measured pH value is output to the control unit 26.

  The second electrode chamber electrode plate 17 is disposed in the second electrode chamber 14b. A voltage is applied to the second electrode chamber electrode plate 17 under the control of the control unit 26. The electrode plate 17 for 2nd electrode chambers electrolyzes raw | natural water when a voltage is applied, and produces | generates electrolyzed water. The electrolyzed water in the second electrode chamber 14b is supplied to the drainage channel 19a. When the electrode plate 17 for 2nd electrode chambers is an anode, the drainage channel 19a discharges acidic ion water.

A drainage channel throttle 20 is provided in the drainage channel 19a. The drainage channel restrictor 20 restricts the flow rate through the drainage channel 19a. The acidic ionized water that has passed through the drainage restrictor 20 is discharged through the drainage channel 19b.
Further, the main body unit 3 is provided with a power supply unit 25. The power supply unit 25 is connected to the power plug 24. The power supply unit 25 converts AC power supplied from the power plug 24 into DC power and supplies the DC power to the control unit 26. The control unit 26 applies the power supplied from the power supply unit 25 to the first electrode chamber electrode plates 16 a and 16 b and the second electrode chamber electrode plate 17. Thereby, the control part 26 supplies the electrolytic cell 14 with the electrolysis energy for performing electrolysis. Further, the control unit 26 controls the strength of electrolysis applied to the first electrode chamber electrode plates 16 a and 16 b and the second electrode chamber electrode plate 17 of the electrolytic cell 14.

  Further, the main body unit 3 is provided with an operation display unit 27. The operation display unit 27 includes operation buttons, a liquid crystal display, and the like. The operation display unit 27 receives an operation by a user and displays settings and a state of the electrolyzed water generating device. The operation display unit 27 can be set so that the electrolyzed water generating device generates alkaline ionized water or acidic ionized water. Further, the operation display unit 27 can set the quality of the purified water by the water purification unit 4. Further, the operation display unit 27 can set the pH intensity of alkaline ionized water. In addition, the operation display unit 27 can select and set various functions.

  The electrolyzed water generating apparatus described above operates as follows to generate alkaline ionized water having an appropriate pH value and a large amount of dissolved hydrogen.

  The user of the electrolyzed water generating device selects a desired water quality mode and pH intensity, such as an alkaline ionized water generating mode, an acidic ionized water generating mode, or a purified water mode, by operating a button on the operation display unit 27. Next, when the faucet 2 is opened by the user, raw water is passed from the raw water pipe 1 to the main body 3.

  The raw water introduced from the faucet 2 to the main body 3 is freed of impurities such as residual chlorine, trihalomethane, mold odor, and general bacteria in the raw water by the water purification unit 4.

  The filtered raw water passes through the flow rate detection unit 6 through the introduction channel 5a, and then a part of the raw water is branched to the introduction channel 5c side, and the flow rate is restricted to an appropriate amount by the calcium supply unit throttle 7. This raw water is processed into water that is easily electrolyzed by dissolving calcium glycerophosphate, calcium lactate, and the like in the calcium supply section 8, and merges with the raw water in the introduction path 5b. The calcium supply unit 8 may have a structure in which calcium glycerophosphate, calcium lactate, or the like is directly added and turbidly dissolved in running water, or is inserted into a supply unit after being put in a housing having a mesh, and is flown at the interface with the mesh. A structure to be dissolved may be used. Further, the shape of these calcium glycerophosphate and calcium lactate may be any of powder, granule, and tablet, but it is desirable to make it granular from the viewpoint of stable dissolution of the agent.

  Part of the combined raw water is again branched to the introduction path 5 f side, and the flow rate is restricted to an appropriate amount by the pH buffer agent supply restrictor 9. This raw water is merged with the raw water in the introduction path 5e after the pH buffer is dissolved in the pH buffer supply 10. The pH buffer supply unit 10 may have a structure in which a pH buffer agent is added and turbidly dissolved in running water, or after being put into a housing having a mesh, it is inserted into the supply unit and dissolved by water flow at the interface with the mesh. The structure to be allowed may be used. These pH buffering agents may be in the form of powder, granules or tablets, but are preferably granulated from the viewpoint of stable dissolution of the agent.

  Thereafter, the raw water is introduced into the first electrode chamber 14a and the second electrode chamber 14b through the first electrode chamber introduction passage 11 and the second electrode chamber introduction passage 12, respectively. Here, the second electrode chamber restriction 13 adjusts the internal pressure balance of the first electrode chamber 14a and the second electrode chamber 14b. For this purpose, the second electrode chamber restriction 13 has the first electrode chamber introduction path 11 and the second electrode with respect to the flow rate ratio passing through the outlet side of the first electrode chamber 14a and the outlet side of the second electrode chamber 14b. The flow rate ratio passing through the room introduction path 12 is changed. In this embodiment, (flow rate on the outlet side of the first electrode chamber 14a) / (flow rate on the outlet side of the second electrode chamber 14b) ≈ (flow rate of the introduction path 11 for the first electrode chamber) / (introduction path for the second electrode chamber) 12 flow rate). As a result, the water in the first electrode chamber 14a and the water in the second electrode chamber 14b are not mixed.

  AC 100 V is supplied from the power plug 24 to the power supply unit 25. The transformer in the power supply unit 25 and the control DC power supply generate energy necessary for electrolysis. The necessary energy is supplied to the first electrode chamber electrode plates 16 a and 16 b and the second electrode chamber electrode plate 17 of the electrolytic cell 14 through the control unit 26. At this time, assuming that the electrode to which a relatively positive voltage is applied is an anode and the electrode to which a negative voltage is applied is a cathode, an anode chamber and a cathode chamber partitioned by diaphragms 15a and 15b are formed in the electrolytic cell 14. The In the alkaline ion water generation mode, the first electrode chamber electrode plates 16a and 16b serve as cathodes, and the second electrode chamber electrode plate 17 serves as an anode.

  As described above, when water flow is started in the main body unit 3, the control unit 26 reads an output signal from the flow rate detection unit 6. When the flow rate level flowing per unit time exceeds a certain amount, the control unit 26 determines that water is flowing. The control unit 26 supplies predetermined electrolytic energy to the electrolytic cell 14 based on the electrolysis conditions corresponding to the water quality mode and pH intensity selected in advance.

  Thus, in the alkaline ion water generation mode, the first electrode chamber electrode plates 16 a and 16 b serve as cathodes, and alkaline ion water is generated and discharged from the water discharge path 18. On the other hand, the electrode plate 17 for the second electrode chamber serves as an anode, and acid ion water is generated. After passing through the drainage channel 19a, the flow rate is restricted to an appropriate amount by the drainage channel throttle 20, and is discharged from the drainage channel 19b.

  The alkaline ionized water thus generated is discharged from the water discharge channel 18 and used for drinking. A part of the alkaline ionized water is branched into the water discharge bypass passage 21, the flow amount is restricted to an appropriate amount by the water discharge bypass passage restrictor 22, and introduced into the pH sensor unit 23 to measure the pH value. The control unit 26 reads the output signal from the pH sensor unit 23 and performs control to sequentially adjust the electrolysis energy so that the pH intensity set by the operation display unit 27 is obtained.

  The alkaline ionized water that has passed through the pH sensor unit 23 is discharged as drainage after joining the drainage channel 19b. The pH buffer is dissolved in the raw water to be electrolyzed by the pH buffer supply unit 10. For this reason, in order to raise the pH value of alkaline ionized water to desired pH intensity | strength, more electrolysis energy can be applied with respect to the raw | natural water in which the pH buffer agent is not melt | dissolved. This is because when the pH buffering agent is dissolved in alkaline ionized water containing OH negative ions generated by the electrolysis reaction, hydrogen ions deviating from the pH buffering agent are neutralized to OH negative ions. Specifically, OH negative ions are neutralized as shown in (3) by the hydrogen ions emerging from dissociated sodium hydrogen carbonate as shown in (1) and dissociated hydrogen carbonate as shown in (2). This is because the pH value of the ionized water is returned to neutral.

NaHCO ₃ → Na ⁺ + HCO ₃ ⁻ (1)
HCO ₃ ⁻ → H ⁺ + CO ₃ ²⁻ (2)
OH ⁻ + H ⁺ → H ₂ O (3)
In addition, since the hydrogen gas generated by electrolysis is not in an ionic state, it is not affected by the electrolysis reaction. Thereby, even if it is pH intensity of the same setting, more hydrogen gas is generated and the amount of dissolved hydrogen in alkaline ionized water can be increased.

  In order to increase the amount of dissolved hydrogen in the alkaline ionized water as much as possible, the control unit 26 may adjust the energy of electrolysis so that the pH value is as high as possible within a range where the pH value does not become 10 or more. desirable.

  When the flow rate level of the raw water flowing per unit time falls below a certain amount, the control unit 26 determines that the state is water stop and ends the supply of electrolysis energy to the electrolytic cell 14. The controller 26 applies a positive voltage relatively to the first electrode chamber electrode plates 16 a and 16 b and applies a negative voltage to the second electrode chamber electrode plate 17 for a certain time after the water stoppage. Thereby, scales, such as calcium adhering to the electrode plates 16a and 16b for the first electrode chamber, are washed and removed.

  As described above, according to the electrolyzed water generating device shown as the first embodiment, the pH buffer supply unit 10 is provided in the introduction path 5 f that is the front stage of the electrolytic cell 14. The electrolyzed water generating device can generate alkali ion water with high electrolysis energy in order to obtain alkali ion water having an appropriate pH value. Thereby, the electrolyzed water production | generation apparatus can produce | generate alkali ion water with much dissolved hydrogen amount. Moreover, since the electrolysis water production | generation apparatus has injected | thrown-in the pH buffer agent to raw | natural water, it does not neutralize the produced | generated alkali ion water too much.

  In addition, as shown in FIG. 2, the electrolyzed water generating apparatus shown as the first embodiment includes the pH buffer agent supply section throttle 9 and the pH buffer agent supply section 10 in a water discharge path 18 a branched from the water discharge path 18. Also good. The electrolyzed water generator adds a pH buffer to the water discharged from the water discharge path 18 a and mixes the water discharged with the water discharged from the water discharge path 18. Thereby, the electrolyzed water generating device suppresses the pH value of the alkaline ionized water discharged from the water discharge path 18. Such an electrolyzed water generating apparatus can generate alkali ion water with a large amount of dissolved hydrogen without excessively neutralizing the generated alkali ion water and without excessively increasing the pH value. .

[Second Embodiment]
Next, an electrolyzed water generating apparatus shown as a second embodiment of the present invention will be described with reference to FIG. The same parts as those in the first embodiment described above are denoted by the same reference numerals, and detailed description thereof is omitted.

  The electrolyzed water generating apparatus shown as the second embodiment includes an on-off valve 28 that can adjust the amount of pH buffering agent added by the pH buffering agent supply unit 10 based on the pH value of the discharged water. Different from water generator. The opening / closing valve 28 is operated by the actuator 28a according to the control of the control unit 26, and its opening degree is adjusted. The control unit 26 supplies a control signal for adjusting the addition amount of the pH buffering agent by the pH buffering agent supply unit to the on-off valve 28 based on the pH value of the alkaline ionized water detected by the pH sensor unit 23.

  In this electrolyzed water generating device, it is desirable to supply the maximum electrolysis energy of the electrolyzed water generating device in order to maximize the amount of hydrogen that can be drunk and dissolved in alkaline ionized water. Since the pH value increases when the electrolysis energy is maximized, the control unit 26 desirably adjusts the opening degree of the on-off valve 28 within a range where the pH value does not become 10 or more based on the electrolysis energy.

  The control unit 26 appropriately controls the opening degree of the on-off valve 28 while detecting the pH value of the alkaline ionized water. Thereby, even if the melt | dissolution performance of the pH buffer of alkaline ionized water changes, the pH value of discharged water can be stabilized.

  In addition, even when the desired pH intensity is set by the operation display unit 27, the control unit 26 is detecting the pH value detected by the pH sensor unit 23 while supplying the maximum electrolysis energy. The opening degree of the on-off valve 28 is adjusted until the desired pH intensity is reached. When it is set to increase the pH value, the control unit 26 decreases the opening degree of the on-off valve 28. On the other hand, when the pH value is set to be low, the control unit 26 increases the opening degree of the on-off valve 28.

  As described above, the electrolyzed water generating apparatus shown as the second embodiment is provided with the pH buffering agent supply unit 10 in the introduction path 5f, which is the front stage of the electrolytic cell 14, as in the first embodiment. Thereby, even if electrolysis energy is maximized, the electrolyzed water production | generation apparatus can adjust the addition amount of a pH buffer agent, and can discharge the alkaline ionized water of desired pH intensity | strength. Furthermore, it can further suppress that the alkali ion water is neutralized too much, and the alkali ion water with a large amount of dissolved hydrogen can be generated.

  Moreover, as shown in FIG. 4, the electrolyzed water generating apparatus shown as the second embodiment may include the on-off valve 28 and the pH buffering agent supply unit 10 in the water discharge path 18 a branched from the water discharge path 18. The electrolyzed water generator adds a pH buffer to the water discharged from the water discharge path 18 a and mixes the water discharged with the water discharged from the water discharge path 18. At this time, the control unit 26 opens and closes the open / close valve 28 so as to obtain a desired pH value based on the pH value of the alkaline ionized water detected by the pH sensor unit 23. Thereby, the electrolyzed water generating device suppresses the pH value of the alkaline ionized water discharged from the water discharge path 18. Such an electrolyzed water generating apparatus can generate alkali ion water with a large amount of dissolved hydrogen without excessively neutralizing the generated alkali ion water and without excessively increasing the pH value. .

  The above-described embodiment is an example of the present invention. For this reason, the present invention is not limited to the above-described embodiment, and various modifications can be made depending on the design and the like as long as the technical idea according to the present invention is not deviated from this embodiment. Of course, it is possible to change.

DESCRIPTION OF SYMBOLS 10 pH buffer supply part 11 1st electrode chamber introduction path 14 Electrolytic tank 14a 1st electrode chamber 14b 2nd electrode chamber 15a, 15b Diaphragm 16a, 16b Electrode plate for 1st electrode chambers (electrode for electrolysis)
17 Electrode plate for second electrode chamber (electrode for electrolysis)
18 Water discharge channel 19 Drainage channel 26 Control unit 28 On-off valve

Claims (2)

It is divided into a cathode chamber and an anode chamber by a diaphragm, and an electrode for electrolysis is inserted into each of the cathode chamber and the anode chamber, and the raw water passed through is electrolyzed to produce alkaline ionized water and acidic water. An electrolytic cell for producing ionic water;
An introduction path for introducing raw water into the electrolytic cell;
A water discharge channel for discharging alkaline ionized water generated in the cathode chamber in the electrolytic cell;
A drainage channel for discharging acidic ion water generated in the anode chamber in the electrolytic cell;
A pH buffer agent supply unit that is provided in the introduction channel or the water discharge channel and supplies a pH buffer agent to the supplied raw water or alkaline ionized water;
A control unit for controlling the strength of electrolysis applied to the electrolysis electrode of the electrolytic cell;
An electrolyzed water generating apparatus comprising:   The electrolyzed water generating apparatus according to claim 1, further comprising an on-off valve capable of adjusting an addition amount of the pH buffering agent by the pH buffering agent supply unit based on a pH value of the alkaline ionized water.

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