JP6196528B2 - Dissolved hydrogen concentration measuring method and electrolyzed water generator - Google Patents

Description

  The present invention relates to a method for measuring the dissolved hydrogen concentration of generated hydrogen water in an electrolyzed water generating apparatus that generates electrolyzed water by electrolyzing water, and a function of calculating the dissolved hydrogen concentration in hydrogen water. The present invention relates to an electrolyzed water generating apparatus.

  An electrolyzed water generating device that generates electrolyzed water by electrolyzing water includes an electrolytic cell in which a cathode chamber and an anode chamber are partitioned with a diaphragm interposed therebetween, and hydrogen water (reduced water) is supplied from the cathode chamber to the anode chamber. Acid water is discharged from each.

  Hydrogen water obtained by electrolyzing water (hereinafter, also referred to as “electrolytic hydrogen water”) has alkalinity. Therefore, hydrogen ion concentration (pH) of electrolytic hydrogen water is used as an index indicating the production state of electrolytic hydrogen water. ) Is an electrolyzed water generating device having a function of displaying (Patent Document 1).

  In recent years, active hydrogen is considered to have an action (antioxidant property) for removing active oxygen in a human body, and the concentration of dissolved hydrogen contained in electrolytic hydrogen water has attracted attention. Even if the hydrogen ion concentration (pH) in the electrolytic hydrogen water is the same, the value of the dissolved hydrogen concentration may be different. To obtain electrolytic hydrogen water having a predetermined dissolved hydrogen concentration by electrolysis of water, the dissolved hydrogen concentration Must be measured accurately.

  For measuring the dissolved hydrogen concentration, there is a dissolved hydrogen sensor using a diaphragm type polarographic method. For this, a gas permeable membrane is used at the tip opening of the sensor body, and hydrogen penetrates and diffuses into the electrolyte inside the sensor through this membrane, so that the oxidation reaction of hydrogen gas between the electrodes in the electrolyte The electric current resulting from is generated, and the dissolved hydrogen concentration is obtained from the electric current value. However, since this type of dissolved hydrogen sensor is very expensive, it is difficult to adopt it in terms of manufacturing cost to attach it to the electrolyzed water generator.

  On the other hand, Oxidation Reduction Potential (ORP) is an index indicating the oxidizability and reducibility of an aqueous solution. Therefore, the redox potential in electrolytic hydrogen water is measured and dissolved hydrogen in electrolytic hydrogen water based on a calibration table. A method for obtaining the concentration has been proposed (Patent Document 2).

JP-A-11-64274 JP 2002-248471 A

  Since the oxidation-reduction potential is an index indicating the oxidizability and reducibility of an aqueous solution, it has a certain correlation with the dissolved hydrogen concentration. The measurement of the dissolved hydrogen concentration based on the oxidation-reduction potential is based on the dissolved polarimeter method. Compared to the case where a sensor is used, it can be performed at a relatively low cost.

  However, if the electrolytic hydrogen water contains an oxidizing substance or reducing substance other than hydrogen, the oxidation-reduction potential of hydrogen alone cannot be measured, and the measurement of the dissolved hydrogen concentration based on the oxidation-reduction potential is not necessarily performed. May not show exact value. Therefore, in order to accurately measure the dissolved hydrogen concentration of electrolyzed hydrogen water based on the oxidation-reduction potential, it is necessary to measure the oxidation-reduction potential before and after electrolysis, which complicates the configuration of the electrolyzed water generator. Incurs an increase in manufacturing costs.

  In addition, in order to measure the oxidation-reduction potential of electrolytic hydrogen water, it is necessary to put an electrode in a water discharge pipe for discharging electrolytic hydrogen water, but during electrolysis, minerals such as Ca are plated (scale). When attached to the electrode, the measurement accuracy of the oxidation-reduction potential decreases. Therefore, in order to maintain measurement accuracy, it is necessary to frequently perform electrode maintenance.

  The present invention has been made in order to solve the above-mentioned problems, and its main object is to provide a method for measuring the dissolved hydrogen concentration which can measure the dissolved hydrogen concentration in the electrolytic hydrogen water by an easy and inexpensive method. Is to provide. Moreover, it aims at providing the electrolyzed water generating apparatus provided with the function which calculates the dissolved hydrogen concentration in electrolyzed hydrogen water by such a measuring method.

  The present invention measures in advance the correlation between the current during electrolysis of water and the discharge flow rate of electrolytic hydrogen water and the dissolved hydrogen concentration in the electrolytic hydrogen water, and based on the measurement data, the measured current and A method of calculating the dissolved hydrogen concentration in the electrolytic hydrogen water according to the discharged water flow rate is adopted.

That is, the dissolved hydrogen concentration measuring method according to the present invention measures the dissolved hydrogen concentration of hydrogen water generated in the cathode chamber by electrolyzing water supplied to an electrolytic cell having a cathode chamber and an anode chamber. a method, electrolysis is carried out in two electrode mode by inverting the polarity of the voltage applied to the anode plate disposed to the cathode plate and anode chamber disposed in the cathode chamber, and the negative electrode plate and measuring step of measuring the water discharge flow rate of the hydrogen water produced by the current, and cathode chamber flows between the positive electrode plate, pre-measured current, the type of the water discharge flow rate, and the electrode mode, the dissolved hydrogen concentration of the hydrogen-water And a calculation step of calculating the dissolved hydrogen concentration in the hydrogen water generated in the cathode chamber according to the current and the water discharge flow rate measured in the measurement step and the type of the electrode mode based on the data representing the correlation with It is characterized by that.

Furthermore, electrolytic water generation apparatus according to the present invention, by electrolysis of water supplied to the electrolytic cell having a cathode compartment and an anode compartment, a electrolytic water generation apparatus for generating electrolytic water, to the cathode chamber e Bei two electrodes modes obtained by inverting the polarity of the voltage applied to the anode plate disposed disposed cathodic plate and anode compartment, a current meter for measuring the current flowing between the cathode plate and the anode plate And a flow meter that measures the discharge flow rate of hydrogen water generated in the cathode chamber, and stores data representing the correlation between the pre-measured current, discharge flow rate, electrode mode type, and dissolved hydrogen concentration in the hydrogen water And dissolved in the hydrogen water generated in the cathode chamber according to the current measured by the ammeter, the discharge flow rate measured by the flow meter, and the type of electrode mode based on the data stored in the storage unit. An arithmetic unit for calculating the hydrogen concentration And wherein the door.

  According to the present invention, the concentration of the dissolved water tank in the electrolytic hydrogen water can be measured by an easy and inexpensive method. Moreover, according to the present invention, it is possible to provide an electrolyzed water generating device having a function of calculating the dissolved hydrogen concentration in the electrolyzed hydrogen water by an inexpensive method that is easy to maintain.

It is the graph which showed the dependence with respect to the electric current of dissolved hydrogen concentration. It is the graph which showed the dependence with respect to the discharged water flow rate of dissolved hydrogen concentration. It is the flowchart which showed the method of measuring the dissolved hydrogen concentration in the electrolytic hydrogen water in this invention. It is the block diagram which showed typically the structure of the electrolyzed water generating apparatus in this invention. (A) And (b) is the figure which showed the mechanism in which the characteristic (hydrogen water and acidic water) discharged from a water discharge pipe does not change even if the polarity of the voltage applied to an electrode plate is reversed. . It is the graph which showed the correlation with an electric current and dissolved hydrogen concentration when changing an electrode mode. It is the graph which showed the correlation of the discharged water flow rate and dissolved hydrogen concentration when changing an electrode mode.

  Before explaining the present invention, the background to the idea of the present invention will be described first.

  The electrolytic hydrogen water is generated by applying a voltage between a cathode plate and an anode plate disposed in the electrolytic cell, and electrolyzing the water supplied in the electrolytic cell. Therefore, it is expected that the dissolved hydrogen concentration in the electrolytic hydrogen water depends on the current value during electrolysis. In addition, in the case of a system in which water is continuously supplied into the electrolytic cell to generate electrolytic hydrogen water continuously, the dissolved hydrogen concentration in the electrolytic hydrogen water may depend on the discharge water flow rate of the electrolytic hydrogen water. is expected.

  Therefore, in order to investigate the dependence of the dissolved hydrogen concentration in the electrolytic hydrogen water on the current and the amount of discharged water, the inventors of the present application investigated the current flowing between the cathode plate and the anode plate and the hydrogen water generated in the cathode chamber. Electrolytic hydrogen water was generated by changing the water discharge flow rate, respectively, and the dissolved hydrogen concentration of the generated electrolytic hydrogen water was measured using a dissolved hydrogen sensor by a diaphragm type polarographic method. The discharge water flow rate of the electrolytic hydrogen water was changed by changing the flow rate of water supplied to the electrolytic cell.

  1 and 2 are graphs showing the results. FIG. 1 is a graph showing the dependence of the dissolved hydrogen concentration [ppb] on the current [A]. The curves indicated by A to E indicate the water discharge flow rate to 1, 2, 3, 4, 5 L / min in order. It shows the dissolved hydrogen concentration when changed. As shown in FIG. 1, when the current is 1 A, the curve A (water discharge flow rate is 1 L / min) shows about 350 ppb, and the curve E (water discharge flow rate is 5 L / min) shows about 90 ppb. When the current is 5 A, the curve A shows about 920 ppb, and the curve E shows about 390 ppb.

  FIG. 2 is a graph showing the dependence of the dissolved hydrogen concentration [ppb] on the discharged water flow rate [L / min]. The curves indicated by O to R indicate currents of 5, 4, 3.2, in order. The dissolved hydrogen concentration when changed to 1A is shown. As shown in FIG. 2, when the water discharge flow rate is 1 L / min, the curve O (current is 5 A) shows about 930 ppb, and the curve R (current is 1 A) shows about 340 ppb. Further, when the water discharge flow rate is 5 L / min, the curve O shows about 390 ppb, and the curve R shows about 90 ppb.

  As shown in FIGS. 1 and 2, it has been found that the dissolved hydrogen concentration of the electrolytic hydrogen water shows a certain correlation that increases when the current increases or when the discharge water flow rate decreases. It was also found that this correlation is reproducible.

  From such knowledge, the inventors of the present application measured the current flowing between the cathode plate and the anode plate, and the discharge flow rate of the electrolytic hydrogen water, so that the current and discharge flow rate measured in advance and the dissolved water in the hydrogen water were dissolved. It was found that the dissolved hydrogen concentration in the hydrogen water can be easily calculated based on the data representing the correlation with the hydrogen concentration.

  In addition, since the current flowing between the cathode plate and the anode plate and the meter for measuring the discharge flow rate of the electrolyzed hydrogen water are inherently provided in the electrolyzed water generation device, the current and discharge flow rate, By preparing data representing the correlation with the dissolved hydrogen concentration in the hydrogen water, the dissolved hydrogen concentration in the electrolytic hydrogen water can be obtained easily and inexpensively.

  FIG. 3 is a flowchart showing a method for measuring the dissolved hydrogen concentration in the electrolytic hydrogen water in the present invention. In addition, the dissolved hydrogen concentration measuring method in this invention is applied to the electrolyzed water production | generation apparatus which produces | generates electrolyzed water by electrolyzing the water supplied to the electrolytic cell provided with the cathode chamber and the anode chamber.

  First, a voltage is applied between the cathode plate and the anode plate to generate electrolyzed water (step S10). At this time, hydrogen water is discharged from the cathode chamber, and acidic water is discharged from the anode chamber.

  Next, the current flowing between the cathode plate and the anode plate is measured (step S11). Further, the flow rate of discharged hydrogen water generated in the cathode chamber is measured (step S12). Here, the current and water discharge flow rate can be measured using, for example, an ammeter and a flow meter. In addition, you may perform simultaneously, regardless of the order of process S11 and process S12.

  Next, data representing a correlation between the current and flow rate of water measured in advance and the dissolved hydrogen concentration in the electrolytic hydrogen water is prepared (step S13). This data uses the same electrolyzed water generating device to generate electrolyzed hydrogen water by changing the current flowing between the cathode plate and the anode plate and the discharge flow rate of the hydrogen water generated in the cathode chamber. This is data obtained by measuring the dissolved hydrogen concentration of the generated electrolytic hydrogen water using a dissolved hydrogen sensor by a diaphragm type polarographic method. Therefore, step S13 may be performed in advance before steps S10 to S12. Note that data representing the correlation between the current and water discharge flow rate and the dissolved hydrogen concentration in the hydrogen water may be prepared as an arithmetic expression representing the curve shown in FIG. 1 or FIG.

  Next, based on the data prepared in step S13, the dissolved hydrogen concentration in the hydrogen water generated in the cathode chamber is calculated according to the current measured in steps S11 and S12 and the discharge water flow rate (step S14).

  As described above, the dissolved hydrogen concentration measuring method according to the present invention calculates the dissolved hydrogen concentration of the electrolytic hydrogen water based on the data representing the correlation between the current and discharge water flow prepared in advance and the dissolved hydrogen concentration in the hydrogen water. Therefore, the dissolved hydrogen concentration can be easily determined as compared with the conventional method of measuring the redox potential and determining the dissolved hydrogen concentration.

  In addition, the oxidation-reduction potential needs to be measured by putting an electrode in a water discharge pipe for discharging electrolytic hydrogen water. However, in the measurement method according to the present invention, an ammeter or a flow rate originally provided in the electrolyzed water generating apparatus is used. Since it can measure using a meter, the dissolved hydrogen concentration in electrolytic hydrogen water can be calculated | required cheaply.

  Furthermore, if the scale is attached to the electrode used for measuring the oxidation-reduction potential, the measurement accuracy of the oxidation-reduction potential decreases, and therefore it is necessary to frequently perform maintenance of the electrode. In the measurement method of the present invention, such maintenance is performed. Is unnecessary. Therefore, the dissolved hydrogen concentration measuring method in the present invention can perform a stable measurement as compared with the conventional method for obtaining the dissolved hydrogen concentration by measuring the oxidation-reduction potential.

  FIG. 4 is a configuration diagram schematically showing the configuration of the electrolyzed water generating apparatus 1 in the present invention, which has a function of calculating the dissolved hydrogen concentration in the electrolyzed hydrogen water by the dissolved hydrogen concentration measuring method in the present invention.

  As shown in FIG. 4, the electrolyzed water generating apparatus 1 generates electrolyzed water by electrolyzing water supplied to an electrolyzer 10 having a cathode chamber 11 and an anode chamber 12. The electrolytic cell 10 is partitioned into a cathode chamber 11 and an anode chamber 12 by a diaphragm 15, and a cathode plate 13 and an anode plate 14 are disposed respectively. The water supplied from the supply pipe 20 is supplied into the cathode chamber 11 and the anode chamber 12 through supply pipes 21 and 22 branched in the middle. The amount of water supplied is adjusted by opening and closing a valve 25 provided in the supply pipe 20.

  A DC voltage is applied between the cathode plate 13 and the anode plate 14 from the power source 30, and the water supplied to the cathode chamber 11 and the anode chamber 12 is electrolyzed to generate electrolyzed water. The hydrogen water generated in the cathode chamber 11 flows out through the water discharge pipe 23, and the acidic water generated in the anode chamber 12 flows out through the water discharge pipe 24.

  An ammeter 35 is provided on the conductive wire connecting the cathode plate 13 and the anode plate 14 and the power source 30, and the current flowing between the cathode plate 13 and the anode plate 14 is measured by the ammeter 35. The water discharge pipe 23 connected to the cathode chamber 11 is provided with a flow meter 80, and the flow rate of the hydrogen water generated in the cathode chamber 11 is measured by the flow meter 80.

  Data representing the correlation between the current and discharge flow rate measured in advance and the dissolved hydrogen concentration in the hydrogen water is stored in the storage unit 50. The current and water discharge flow rate measured by the ammeter 35 and the flow meter 80 are generated in the cathode chamber 11 according to the measured current and water discharge flow rate based on the data input to the calculation unit 40 and stored in the storage unit 50. The dissolved hydrogen concentration in the generated hydrogen water is calculated.

  As described above, the electrolyzed water generating apparatus 1 according to the present invention stores the data representing the correlation between the pre-measured current and the discharged water flow rate and the dissolved hydrogen concentration in the hydrogen water in the storage unit 50. Based on the data, the dissolved hydrogen concentration in the hydrogen water generated in the cathode chamber can be easily calculated according to the measured current and discharged water flow rate. Thereby, it is possible to realize an electrolyzed water generating device having a function of calculating the dissolved hydrogen concentration in the electrolyzed hydrogen water by an inexpensive method that is easy to maintain.

  In the present invention, the dissolved hydrogen concentration in the hydrogen water calculated by the calculation unit 40 may be displayed on the display unit 70. In this case, the dissolved hydrogen concentration in the hydrogen water displayed on the display unit 70 is controlled by the control unit 60. The display unit 70 may not only display the value of the dissolved hydrogen concentration (ppb), but also may be written in characters or the like that indicate the dissolved hydrogen concentration (ppb) in a stepwise manner.

  Further, based on the dissolved hydrogen concentration in the hydrogen water calculated by the calculation unit 40, the direct current applied from the power source 30 by the control unit 60 so that the dissolved hydrogen concentration in the hydrogen water generated in the cathode chamber 11 becomes a predetermined value. The current flowing between the cathode plate 13 and the anode plate 14 may be controlled by adjusting the voltage. Alternatively, the controller 60 may adjust the opening and closing of the valve 25 provided in the supply pipe 20 to control the discharge flow rate of the hydrogen water generated in the cathode chamber 11.

  Here, the water discharge flow rate of the hydrogen water generated in the cathode chamber 11 is measured using the flow meter 80 provided in the water discharge pipe 23 on the downstream side of the electrolytic cell 10, but on the upstream side of the electrolytic cell 10. You may measure using the flowmeter provided in the supply pipe | tube 20. FIG. In this case, the flow meter provided in the supply pipe 20 measures the total supply flow rate of water, but if the electrolyzed water generating device 1 has previously determined the generation ratio of hydrogen water and acidic water, According to this ratio, the discharge flow rate of the hydrogen water generated in the cathode chamber 11 can be obtained.

  By the way, when electrolyzing water, if minerals and the like contained in the water are in a plated state (scale) and adhere to the cathode plate 13 and the anode plate 14, the electrolytic hydrogen water cannot be generated stably. Therefore, in order to prevent the scale from adhering to the cathode plate 13 and the anode plate 14, the electrolyzed water generating apparatus 1 includes two types of electrode modes for controlling the polarity of the voltage applied to the cathode plate 13 and the anode plate 14. May have been. Specifically, the electrolyzed water generating apparatus 1 includes an electrode mode (referred to as a first electrode mode) in which the cathode plate 13 is used as a cathode and the anode plate 14 is used as an anode, and the cathode plate 13 is used as an anode. There is an electrode mode (referred to as a second electrode mode) for controlling as a cathode. In the second electrode mode, the polarity of the voltage applied to the cathode plate 13 and the anode plate 14 in the first electrode mode is reversed. At this time, even if the polarity of the voltage applied to the cathode plate 13 and the anode plate 14 is reversed, it is preferable that the characteristics (hydrogen water and acidic water) of the electrolyzed water discharged from the water discharge pipes 23 and 24 do not change.

  FIGS. 5A and 5B show characteristics of electrolyzed water (hydrogen water and acidic water) discharged from the water discharge pipes 23 and 24 even when the polarities of voltages applied to the cathode plate 13 and the anode plate 14 are reversed. It is the block diagram which showed the mechanism in which () does not change.

  When the cathode chamber 11 and the anode chamber 12 in the electrolytic cell 10 are arranged as shown in FIG. 5A (first electrode mode), the water supplied from the supply pipe 20a is supplied from the switching valve 90a. Through the supply pipe 21 and into the cathode chamber 11. Moreover, the water supplied from the supply pipe 20b flows into the anode chamber 12 from the supply pipe 22 through the switching valve 90a. On the other hand, the hydrogen water generated in the cathode chamber 11 is taken out from the water discharge pipe 23 via the water discharge pipe 24b and the switching valve 90b. The acidic water generated in the anode chamber 12 is taken out from the water discharge pipe 24 via the water discharge pipe 24a and the switching valve 90b.

  Next, as shown in FIG. 5B, when the polarity of the voltage applied to the cathode plate 13 and the anode plate 14 is reversed and the arrangement of the cathode chamber 11 and the anode chamber 12 is switched (second electrode mode). ) The two switching valves 90a and 90b are operated at the same time, and the flow paths of water and electrolyzed water are switched. That is, the water supplied from the supply pipe 20a flows into the cathode chamber 11 from the supply pipe 22 via the switching valve 90a. Moreover, the water supplied from the supply pipe 20b flows into the anode chamber 12 from the supply pipe 21 via the switching valve 90a. On the other hand, the hydrogen water generated in the cathode chamber 11 is taken out from the water discharge pipe 23 via the water discharge pipe 24a and the switching valve 90b. The acidic water generated in the anode chamber 12 is taken out from the water discharge pipe 24 via the water discharge pipe 24b and the switching valve 90b.

  As described above, when the polarities of the voltages applied to the cathode plate 13 and the anode plate 14 are reversed, the water supplied from the supply pipe 20a is always kept in the cathode chamber by simultaneously operating the two switching valves 90a and 90b. 11, the water supplied from the supply pipe 20 b is controlled so as to always flow into the anode chamber 12. Further, among the electrolyzed water discharged from the electrolytic cell 10, hydrogen water is always taken out from the water discharge pipe 23, and acidic water is controlled to be always taken out from the water discharge pipe 24. Thereby, when the amount of water flowing into the cathode chamber 11 and the anode chamber 12 is adjusted and the generation amount of hydrogen water and acidic water is set, even if the polarity of the voltage supplied to the electrodes is reversed, The amount of water flowing into the switched cathode chamber 11 and anode chamber 12 can be made constant, and electrolyzed water having the same characteristics can always be taken out from the same water discharge pipe with the same amount of generation.

  However, electrolyzed hydrogen water was generated using the electrolyzed water generator controlled in this way, and the dissolved hydrogen concentration in the electrolyzed hydrogen water was measured using a dissolved hydrogen sensor by a diaphragm type polarographic method. It was found that the concentration of dissolved hydrogen in the electrolytic hydrogen water varies depending on the type of electrode mode even for the electrolytic hydrogen water generated at the discharge water flow rate.

  6 and 7 are graphs showing the results.

  FIG. 6 is a graph showing the correlation between the current [A] and the dissolved hydrogen concentration [ppb]. The curves A to E shown by solid lines are the same as the curves shown by A to E in FIG. The dissolved hydrogen concentration in 1 electrode mode is shown. Curves A ′ to E ′ indicated by broken lines indicate the dissolved hydrogen concentration in the second electrode mode in which the polarity of the voltage applied to the cathode plate 13 and the anode plate 14 is reversed. Curves A to E and A 'to E' indicate dissolved hydrogen concentrations when the water discharge flow rate is changed to 1, 2, 3, 4, 5 L / min, respectively. For example, as shown in FIG. 6, when the current is 5 A and the water discharge flow rate is 1 L / min, the first electrode mode (curve A) shows about 920 ppb, and the second electrode mode (curve A ′) About 800 ppb. When the current is 5 A and the water discharge flow rate is 2 L / min, the first electrode mode (curve B) shows about 700 ppb, and the second electrode mode (curve B ′) shows about 580 ppb.

  FIG. 7 is a graph showing the correlation between the water discharge flow rate [L / min] and the dissolved hydrogen concentration [ppb], and the curves O to R shown by solid lines are the same as the curves shown by O to R of FIG. The dissolved hydrogen concentration in the first electrode mode is shown. Curves O ′ to R ′ indicated by broken lines indicate dissolved hydrogen concentrations in the second electrode mode in which the polarities of the voltages applied to the cathode plate 13 and the anode plate 14 are reversed. Curves O to R and O 'to R' indicate dissolved hydrogen concentrations when the current is changed to 5, 4, 3.2, and 1 A, respectively. For example, as shown in FIG. 7, when the water discharge flow rate is 1 L / min and the current is 5 A, in the first electrode mode (curve O), about 920 ppb is shown, and in the second electrode mode (curve O ′). About 800 ppb. When the water discharge flow rate is 1 L / min and the current is 4 A, the first electrode mode (curve P) shows about 900 ppb, and the second electrode mode (curve P ′) shows about 690 ppb.

  As shown in FIG.6 and FIG.7, it turns out that the dissolved hydrogen concentration in electrolytic hydrogen water changes with the kind of electrode mode. The cause is not clear, but is presumed as follows.

  For example, in the case of five electrode plates, in one electrode mode, the cathode, anode, cathode, anode, and cathode are sequentially from the outermost side, and in the other electrode mode, the polarity is reversed and In order from the outermost side, there are an anode, a cathode, an anode, a cathode, and an anode. In addition, there is a gap between the outermost two electrode plates and the side walls of the outer electrolytic cell. Therefore, the water supplied into the electrolytic cell also flows into the gap between the outermost electrode plate and the side wall of the electrolytic cell. At this time, in the electrode mode in which the outermost side is a cathode, the water flowing in the gap between the outermost cathode and the side wall of the electrolytic cell is not electrolyzed. Therefore, the hydrogen water discharged from the electrolytic cell includes water that is not electrolyzed, so it is presumed that the dissolved hydrogen concentration has decreased. On the other hand, in the electrode mode in which the outermost side is the anode, the hydrogen water discharged from the electrolytic cell is all hydrogen water electrolyzed in the cathode chamber, so that the dissolved hydrogen concentration did not decrease. Guessed.

  Therefore, when the electrolyzed water generating apparatus has two types of electrode modes for controlling the polarity of the voltage applied to the cathode plate 13 and the anode plate 14, the type of the electrode mode is added to the current and the water discharge flow rate. Based on the data representing the correlation between the two parameters and the dissolved hydrogen concentration in the electrolytic hydrogen water, the dissolved hydrogen in the hydrogen water generated in the cathode chamber 11 according to the measured current and water discharge flow rate and the type of electrode mode It is preferable to calculate the concentration.

  As mentioned above, although this invention was demonstrated by suitable embodiment, such description is not a limitation matter and of course various modifications are possible. For example, in the above embodiment, the measured current and discharge flow rate based on the data representing the correlation between the current and discharge flow rate, or the current, discharge flow rate, and the type of electrode mode and the dissolved hydrogen concentration in the electrolytic hydrogen water. Alternatively, the dissolved hydrogen concentration in the electrolytic hydrogen water was calculated according to the measured current, discharged water flow rate, and type of electrode mode, but other parameters (for example, electrical conductivity of water, number of electrode plates, etc.) If the dissolved hydrogen concentration in the electrolytic hydrogen water changes due to the change in the value, data indicating the correlation with the dissolved hydrogen concentration in the electrolytic hydrogen water including the parameter is prepared in advance, and based on this data, the electrolytic hydrogen The dissolved hydrogen concentration in water may be calculated. Thereby, the dissolved hydrogen concentration in the electrolytic hydrogen water can be calculated with higher accuracy.

1 Electrolyzed water generator
10 Electrolysis tank
11 Cathode chamber
12 Anode chamber
13 Cathode plate
14 Anode plate
15 Diaphragm
20, 21, 22 Supply pipe
23, 24 Water discharge pipe
25 Valve
30 power supply
35 Ammeter
40 Calculation unit
50 storage unit
60 Control unit
70 Display section
80 Flow meter
90a, 90b switching valve

Claims (4)

A method for measuring a dissolved hydrogen concentration of hydrogen water generated in the cathode chamber by electrolyzing water supplied to an electrolytic cell including a cathode chamber and an anode chamber,
The electrolysis is performed in two types of electrode modes in which the polarity of the voltage applied to the cathode plate disposed in the cathode chamber and the anode plate disposed in the anode chamber is reversed,
A measurement step of the current flowing between the front Kikage plate and yang plate, and a water discharge flow rate of the hydrogen water produced in the cathode chamber measurements,
Based on the data representing the correlation between the current measured in advance, the water discharge flow rate, and the type of the electrode mode, and the dissolved hydrogen concentration in the hydrogen water, the current and water discharge flow rate measured in the measurement step, and the electrode mode And a calculating step of calculating a dissolved hydrogen concentration in the hydrogen water generated in the cathode chamber according to the type of the dissolved hydrogen concentration. An electrolyzed water generating device for generating electrolyzed water by electrolyzing water supplied to an electrolyzer having a cathode chamber and an anode chamber,
Comprising two types of electrode modes in which the polarity of a voltage applied to the cathode plate disposed in the cathode chamber and the anode plate disposed in the anode chamber is reversed ;
A current meter for measuring the current flowing between the front Kikage plate and yang plate,
A flow meter for measuring the water discharge flow rate of hydrogen water generated in the cathode chamber;
A storage unit storing data representing a correlation between the current measured in advance, the water discharge flow rate, and the type of the electrode mode, and the dissolved hydrogen concentration in the hydrogen water;
Based on the data stored in the storage unit, dissolved in the hydrogen water generated in the cathode chamber according to the current measured by the ammeter, the water discharge flow rate measured by the flow meter, and the type of the electrode mode An electrolyzed water generating apparatus comprising an arithmetic unit that calculates a hydrogen concentration.   The electrolyzed water production | generation apparatus of Claim 2 further provided with the display part which displays the dissolved hydrogen concentration in the hydrogen water computed by the said calculating part.   Based on the dissolved hydrogen concentration in the hydrogen water calculated by the calculation unit, the current flowing between the cathode plate and the anode plate so that the dissolved hydrogen concentration in the hydrogen water generated in the cathode chamber becomes a predetermined value and / or Or the electrolyzed water generating apparatus of Claim 2 further provided with the control part which controls the discharge flow rate of the hydrogenous water produced | generated in the said cathode chamber.

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