JP2018030042A - Electrolytic water generator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electrolytic water generator excellent in electrolysis efficiency.SOLUTION: There is provided an electrolytic water generator provided with an electrolytic cell having an anode and a cathode, an anode chamber 15b which faces the anode and covers the anode and a cathode chamber which faces the cathode and covers the cathode. The electrolytic cell has a plurality of passages which are provided in the anode chamber and face the anode, respectively, and the plurality of passages have a first passage P1 for flowing water at a first flow rate in a state of being in contact with the anode and a second passage P2 for flowing water at a second flow rate higher than the first flow rate in a state of being in contact with the anode.SELECTED DRAWING: Figure 5

Description

  Embodiments described herein relate generally to an electrolyzed water generating apparatus.

  In recent years, there has been provided an electrolyzed water generating apparatus that generates electrolyzed water having various functions by electrolyzing water, for example, alkaline ionized water, ozone water, or hypochlorous acid water. As an electrolyzed water generating apparatus for generating such hypochlorous acid water, there are electrolyzers having a one-diaphragm two-chamber electrolytic cell and a two-diaphragm three-chamber electrolytic cell. The one-diaphragm two-chamber type electrolytic cell includes an electrolytic cell in which an anode chamber containing an anode and a cathode chamber containing a cathode are opposed to each other with a diaphragm passing only specific ions. The 1-diaphragm 2-chamber electrolytic cell is one in which, for example, water mixed with salt is allowed to flow as an electrolyte, so that acidic water is generated in the anode chamber and alkaline water is generated in the cathode chamber. The acidic water is water in which hypochlorous acid and hydrochloric acid are mixed, and the alkaline water is water containing sodium hydroxide water or dissolved hydrogen.

  In the two-diaphragm three-chamber electrolytic cell, an intermediate chamber filled with an electrolytic solution such as salt water is disposed between the anode chamber and the cathode chamber in order to prevent salt from being mixed into the generated acidic water and alkaline water. The intermediate chamber and the anode chamber are separated by an anion exchange membrane, and the intermediate chamber and the cathode chamber are separated by a cation exchange membrane. And only the anion or cation required for electrolysis from salt water is passed through the anode chamber or the cathode chamber.

Japanese Patent No. 3287649 Japanese Patent No. 3500173 Japanese Patent No. 3113645 Japanese Patent No. 4090665

  In such an electrolyzed water generating apparatus, in the anode chamber, chlorine ions that permeate the anion exchange membrane react with the anode to generate chlorine gas. However, when the chlorine ion concentration is low, an oxygen generating reaction that is a competitive reaction occurs. End up. Therefore, it is necessary to increase the chlorine ion concentration in the vicinity of the anode. On the other hand, if the flowing speed of the water flowing through the anode chamber is high, chlorine ions near the electrode will flow without being able to contribute to the reaction. As a result, there was a problem that a sufficient hypochlorous acid concentration could not be obtained due to a decrease in chlorine concentration, and electrolysis efficiency was low.

  This invention is made | formed in view of the above point, The subject is providing the electrolyzed water generating apparatus which is excellent in electrolysis efficiency.

  According to the embodiment, the electrolyzed water generating apparatus includes an electrolytic cell having an anode and a cathode, an anode chamber facing the anode and covering the anode, and a cathode chamber facing the cathode and covering the cathode, The electrolytic cell includes a plurality of channels that are provided in the anode chamber and face the anode, and the plurality of channels are a first channel that allows water to flow at a first flow rate in contact with the anode. And a second flow path that allows water to flow at a second flow rate that is faster than the first flow rate in contact with the anode.

FIG. 1 is a block diagram schematically showing an electrolyzed water generating apparatus according to the first embodiment. FIG. 2 is a perspective view showing an electrolytic cell of the electrolyzed water generating apparatus according to the first embodiment. FIG. 3 is an exploded perspective view of the electrolytic cell. FIG. 4 is a cross-sectional view of the electrolytic cell taken along line AA in FIG. FIG. 5 is a perspective view showing an anode cover of the electrolytic cell. FIG. 6 is an enlarged perspective view showing a part of the anode cover. FIG. 7 is a plan view of the cathode cover schematically showing the flow path and water flow provided in the cathode chamber of the electrolytic cell. FIG. 8 is a graph showing the relationship between the amount of flowing anode water and the effective chlorine concentration. FIG. 9 is a perspective view showing an anode cover of an electrolytic cell according to a modification.

  Various embodiments will be described below with reference to the drawings. In addition, the same code | symbol shall be attached | subjected to a common structure through embodiment, and the overlapping description is abbreviate | omitted. In addition, each drawing is a schematic diagram for promoting the embodiment and its understanding, and its shape, dimensions, ratio, etc. are different from the actual device, but these are considered in consideration of the following description and known techniques. The design can be changed as appropriate.

(First embodiment)
Drawing 1 is a figure showing roughly the composition of the whole electrolyzed water generating device which has the electrolysis tank concerning a 1st embodiment. First, the configuration of the entire electrolyzed water generating device will be described. As shown in FIG. 1, the electrolyzed water generating apparatus includes a so-called three-chamber electrolytic tank 11. The electrolytic cell 11 is formed in a flat rectangular box shape, and the inside thereof is composed of an intermediate chamber 15a and an intermediate chamber 15a by an anion exchange membrane (first diaphragm) 16 and a cation exchange membrane (second diaphragm) 18. It is partitioned into an anode chamber 15b and a cathode chamber 15c located on both sides. An anode 14 is provided in the anode chamber 15 b and faces the anion exchange membrane 16. A cathode 20 is provided in the cathode chamber 15 c and faces the cation exchange membrane 18. The anode 14 and the cathode 20 are formed in a rectangular plate shape having substantially the same size, and face each other with the intermediate chamber 15a interposed therebetween.

  The electrolyzed water generator includes an electrolyte supply unit 19 that supplies an electrolytic solution, for example, saturated brine, to the intermediate chamber 15a of the electrolytic cell 11, and a raw water supply that supplies raw electrolytic water, for example, water to the anode chamber 15b and the cathode chamber 15c. And a power source 23 for applying a positive voltage and a negative voltage to the anode 14 and the cathode 20, respectively.

  The electrolyte supply unit 19 includes a salt water tank 25 that generates saturated salt water, a supply pipe 19a that guides the saturated salt water from the salt water tank 25 to the lower portion of the intermediate chamber 15a, a liquid feed pump 29 provided in the supply pipe 19a, And a drain pipe 19b for sending the electrolytic solution flowing in the intermediate chamber 15a from the upper portion of the intermediate chamber 15a to the salt water tank 25.

  The raw water supply unit 21 includes a water supply source (not shown) for supplying water, a water supply pipe 21a for guiding water from the water supply source to the lower portions of the anode chamber 15b and the cathode chamber 15c, and water flowing through the anode chamber 15b above the anode chamber 15b. A first drain pipe 21b that discharges from the cathode chamber 15c, a second drain pipe 21c that drains water flowing through the cathode chamber 15c from the upper part of the cathode chamber 15c, a gas-liquid separator 27 provided in the second drain pipe 21c, It has.

  A description will be given of an operation in which the salt water is actually electrolyzed to generate acidic water (hypochlorous acid and hydrochloric acid) and alkaline water (sodium hydroxide) by the electrolyzed water generating apparatus configured as described above.

  As shown in FIG. 1, the liquid feeding pump 29 is operated to supply saturated salt water to the intermediate chamber 15a of the electrolytic cell 11, and water is supplied to the anode chamber 15b and the cathode chamber 15c. At the same time, a positive voltage and a negative voltage are applied from the power source 23 to the anode 14 and the cathode 20, respectively. Sodium ions ionized in the brine flowing into the intermediate chamber 15a are attracted to the cathode 20, pass through the cation exchange membrane 18, and flow into the cathode chamber 15c. In the cathode chamber 15c, water is electrolyzed at the cathode 20 to generate hydrogen gas and a sodium hydroxide aqueous solution. The sodium hydroxide aqueous solution and hydrogen gas generated in this way flow out from the cathode chamber 15c to the second drain pipe 21c, and are separated into the sodium hydroxide aqueous solution and hydrogen gas by the gas-liquid separator 27. The separated sodium hydroxide aqueous solution (alkaline water) is discharged through the second drain pipe 21c.

  Moreover, the chlorine ion ionized in the salt water in the intermediate chamber 15a is attracted to the anode 14, passes through the anion exchange membrane 16, and flows into the anode chamber 15b. Then, chlorine ions are reduced at the anode 14 to generate chlorine gas. Thereafter, the chlorine gas reacts with water in the anode chamber 15b to produce hypochlorous acid and hydrochloric acid. The acidic water (hypochlorous acid water and hydrochloric acid) thus generated flows out from the anode chamber 15b through the first drain pipe 21b.

Next, the configuration of the electrolytic cell 11 will be described in more detail. 2 is a perspective view of the electrolytic cell, FIG. 3 is an exploded perspective view of the electrolytic cell, and FIG. 4 is a cross-sectional view of the electrolytic cell along line AA in FIG.
As shown in FIGS. 2 to 4, the electrolytic cell 11 has a rectangular frame-like intermediate frame 22 that functions as a partition, and a rectangular plate shape that has an outer diameter dimension substantially equal to the intermediate frame 22 and covers one side of the intermediate frame. An anode cover (first cover member) 24 and a rectangular plate-like cathode cover (second cover member) 26 having an outer diameter dimension substantially equal to that of the intermediate frame 22 and covering the other side surface of the intermediate frame. Yes. The intermediate frame 22 forms an intermediate chamber 15a with its inner peripheral surface. The anode cover 24 forms an anode chamber 15b by a recess formed in the inner surface thereof, and the cathode cover 26 forms a cathode chamber 15c by a recess formed in the inner surface thereof.

  A first inflow port 34 communicating with the intermediate chamber 15a is formed at the lower end of the intermediate frame 22, and a first outflow port 36 communicating with the intermediate chamber 15a is provided at the upper end. A supply pipe 19a and a drain pipe 19b are connected to the first inlet 34 and the first outlet 36, respectively.

  An anion exchange membrane 16 is disposed between the intermediate frame 22 and the anode cover 24 as a first diaphragm that separates the intermediate chamber 15a and the anode chamber 15b. The anode 14 is disposed in the anode chamber 15 b and is in close proximity to the anion exchange membrane 16. A cation exchange membrane 18 is disposed as a second diaphragm between the intermediate frame 22 and the cathode cover 26, and the cation exchange membrane 18 separates the intermediate chamber 15a and the cathode chamber 15c. The cathode 20 is disposed in the cathode chamber 15 c and is in close proximity to the cation exchange membrane 18.

  Between each component, that is, between the peripheral edge of the anode cover 24 and the peripheral edge of the anode 14, between the peripheral edge of the anode 14 and the anion exchange membrane 16 and the intermediate frame 22, and between the intermediate frame 22, the cathode 20 and the positive electrode. A planar sealing material 40 for preventing water leakage is disposed between the periphery of the ion exchange membrane 18 and between the periphery of the cathode 20 and the periphery of the cathode cover 26.

  A plurality of fixing bolts 50 are inserted through the peripheral edge of each constituent member, for example, inserted from the anode cover 24 side, and the leading end thereof protrudes from the cathode cover 26. A nut 52 is screwed into the tip of each fixing bolt 50. The fixing bolts 50 and nuts 52 as fastening members fasten the peripheral portions of the constituent members to each other, and maintain the water tightness of the intermediate chamber 15a and the electrode chambers 15b and 15c.

Next, each component will be described in more detail.
As shown in FIGS. 2 to 4, the anion exchange membrane 16 and the cation exchange membrane 18 each have an outer diameter substantially equal to that of the intermediate frame 22 and are formed in a thin rectangular plate shape having a thickness of about 100 to 200 μm. Is formed. The anion exchange membrane 16 and the cation exchange membrane 18 have a characteristic of allowing only specific ions to pass therethrough. A plurality of through holes through which the fixing bolts 50 are inserted are formed in the peripheral portions of the anion exchange membrane 16 and the cation exchange membrane 18.

  The anion exchange membrane 16 is disposed to face one side of the intermediate frame 22, and the peripheral edge thereof is in close contact with the intermediate frame 22 via the sealing material 40. Similarly, the cation exchange membrane 18 is disposed to face the other surface side of the intermediate frame 22, and the peripheral edge thereof is in close contact with the intermediate frame 22 via the sealing material 40. The first diaphragm and the second diaphragm are not limited to ion exchange membranes, and may be porous membranes having water permeability.

  The anode 14 and the cathode 20 are formed of a metal flat plate having a thickness of about 1 mm, and are formed in a rectangular shape having an outer diameter substantially the same as the outer diameter of the intermediate frame 22. A fine through-hole for allowing liquid to pass through is formed in the central part (effective area) of the anode 14 and the cathode 20, and a plurality of through-holes for inserting the fixing bolt 50 are formed in the peripheral part of the electrode. Yes. The anode 14 has a connection terminal 14b protruding from one side edge thereof. Similarly, the cathode 20 has a connection terminal 20b protruding from one side edge thereof. The connection terminals 14b and 20b are connected to the power source 23.

  The anode 14 is disposed to face the anion exchange membrane 16 and is in close contact with the anion exchange membrane 16. The cathode 20 is disposed to face the cation exchange membrane 18 and is in close contact with the cation exchange membrane 18.

FIG. 5 is a perspective view showing the inner surface side of the anode cover, and FIG. 6 is an enlarged perspective view showing a part of the anode cover. As shown in FIGS. 4 to 6, the anode cover 24 has an inner surface 24 a that faces the anode 14 and an outer surface on the opposite side. A rectangular recess 60 is formed in the inner surface 24 a of the anode cover 24, and the anode chamber 15 b is formed by the recess 60. The anode chamber 15b is provided with a plurality of channels through which water flows. That is, a plurality of linear ribs 64 are erected on the bottom surface of the recess 60 and extend, for example, in the vertical direction (second direction Y). These ribs 64 are provided in parallel to each other and at a predetermined interval. Between the two adjacent ribs 64, linear flow grooves 65 extending in the vertical direction are formed. The plurality of flow grooves 65 are opposed to the central portion of the anode 14 and form first flow paths P1 through which water flows. The width W1 and the depth D1 of the flow groove 65 are, for example, W1: 8 mm and D1: 2 mm. Thereby, the cross-sectional area of the direction orthogonal to the flow direction of the 1st flow path P1 is about 16 mm < ² >.

In the anode chamber 15b, enlarged flow grooves 66b are provided adjacent to the left and right ends of the flow grooves 65. These enlarged flow grooves 66b are opposed to the peripheral edge of the anode 14 and form second flow paths P2 through which water flows. The width W2 and the depth D2 of the enlarged flow groove 66b are, for example, W2: 5 mm and D2: 8 mm. Thereby, the cross-sectional area of the direction orthogonal to the flow direction of the 2nd flow path P2 is about 40 mm < ² >, and is more than twice the cross-sectional area of the 1st flow path P1.

  Further, in the anode chamber 15b, a pair of upper and lower lateral grooves 66a are formed at the ends of the flow grooves 65 and the enlarged flow grooves 66b. The lateral groove 66a is a portion that receives water supply and drainage to the anode chamber 15b, and serves as a buffer portion for water pressure by providing a large capacity. Thereby, the horizontal groove 66a functions so that the difference in the amount of flowing water between the respective circulation grooves 65 and the difference in the amount of flowing water between the right and left enlarged circulation grooves 66b are eliminated.

  A second inlet 37 is formed on the lower side surface of the anode cover 24 and communicates with one end of the lower lateral groove 66a. A second outlet 38 is formed on the upper side surface of the anode cover 24 and communicates with one end of the upper lateral groove 66a. A water supply pipe 21a and a first drain pipe 21b are connected to the second inlet 37 and the second outlet 38, respectively.

  As shown in FIGS. 3 and 4, in the present embodiment, the cathode cover 26 is configured in the same manner as the anode cover 24 described above. A third inlet 39 is formed at the lower side of the cathode cover 26 and communicates with the cathode chamber 15c. A third outlet 41 is formed on the upper side of the cathode cover 26 and communicates with the cathode chamber 15c. A water supply pipe 21a and a second drain pipe 21c are connected to the third inlet 39 and the third outlet 41, respectively.

  In the electrolytic cell 11 configured as described above, during the electrolysis operation, water supplied from the water supply pipe 21a to the anode chamber 15b through the second inflow port 37 spreads to the lateral groove 66a as shown by an arrow in FIG. Then, the flow is divided into the first flow path P1 and the second flow path P2. At this time, as described above, since the cross-sectional area of the first flow path P1 is relatively smaller than the cross-sectional area of the second flow path P2, the amount of flowing water is reduced in the first flow path P1 according to the cross-sectional area ratio, The flow is diverted so that the amount of flowing water becomes large in the two flow paths P2. That is, the flow speed of the first flow path P1 is slower than the flow speed of the second flow path P2. The inflowing water flows through the first flow path P1 and the second flow path P2 while being in contact with the anode 17, and then merges in the upper lateral groove 66a and is sent from the second outlet 38 to the first drain pipe 21b. It is done.

  Thus, most of the anode 14, in particular, chlorine ions that have permeated through the anion exchange membrane by flowing water at a relatively slow first flow rate (flow rate) through the first flow path P <b> 1 facing the central portion. However, the concentration of the first flow path is higher than when the second flow path is not provided, and chlorine gas can be generated efficiently. On the other hand, in the second flow path P2, on the contrary, the chlorine ion concentration is lowered and the generation efficiency is lowered, but the area where the second flow path P2 is in contact with the anode 14 is smaller than the area where the first flow path P1 is in contact with the anode 14. For this reason, the generation efficiency improvement effect in the first flow path P1 relatively dominates the overall efficiency. Further, hypochlorous acid water having different concentrations is obtained in the first flow path P1 and the second flow path P2, but is mixed and discharged by the lateral groove 66a. As a result, electrolysis efficiency is improved, and hypochlorous acid water having a sufficient chlorine concentration is obtained. Further, the second flow path P2 has a high flow rate of flowing water (flowing water speed), and can increase the flow rate. Therefore, the total flow rate of the water in the anode chamber 15b can be kept at a sufficient flow rate or the total flow rate can be increased while reducing the flow velocity of the main first flow path P1.

  FIG. 8 shows the relationship between the flow rate (flow rate) of the water flowing through the first flow path P1 and the effective chlorine concentration of the generated acidic water. In the present embodiment, when 6 L / min, which is a standard flow rate, flows through the anode chamber 15b, the flow rate of water flowing through the first flow path P1 and the flow rate of water flowing through the second flow path P2 having a large cross-sectional area The effective chlorine concentration during electrolysis was measured using anode chambers with different flow path structures.

  As shown in FIG. 8, when the flow rate of water flowing through the first flow path P1 is as large as 4 L / min or more, the effective chlorine concentration is as low as 70% or less. This is because when chlorine ions that have passed through the anion exchange membrane move to the anode, if the flow rate of water flowing through the first flow path is large, the chlorine ions immediately diffuse in the water, and chlorine in the vicinity of the anode This is because the ion concentration decreases. When a constant current is passed through the anode, if the amount of chlorine ions necessary for the reaction is insufficient, oxygen ions are generated by reacting with hydroxide ions instead. If a large amount of oxygen gas that does not contribute to the generation of hypochlorous acid is generated, the generation efficiency of the effective chlorine concentration is lowered.

  On the other hand, as shown in FIG. 8, when the flow rate of the water flowing through the first flow path P1 is as small as 4 L / min or less, the effective chlorine concentration is as high as 70 to 80%. This is because when the flow rate is small, the diffusion of chlorine ions by water is small, so that the chlorine ion concentration in the vicinity of the anode can be maintained high. If a sufficient amount of chlorine ions required for the reaction is present when a constant current is passed through the anode, generation of oxygen gas, which is a side reaction, can be suppressed, and the production efficiency of effective chlorine concentration can be increased.

  In the anode 14 facing the first flow path P1 and the second flow path P2, the area of the portion in contact with the first flow path P1, which is the main body of the reaction, is larger than the area of the portion in contact with the second flow path P2 having a large cross-sectional area. Is preferably twice or more. Since the ratio of the area in contact with the anode 14 of the first flow path P1 is relatively large, the area of the anode in contact with the high concentration chlorine ions is increased, and the effective chlorine concentration can be increased.

In order to increase the total flow rate of the water flowing in the anode chamber 15b, it is necessary to increase the cross-sectional area of the second flow path P2, and this can be dealt with by deepening the groove forming the second flow path P2. By increasing the groove depth D2, the area in contact with the anode 14 can be reduced while increasing the cross-sectional area of the second flow path P2. Thereby, the area which contacts the anode 14 of the 1st flow path P1 can be increased relatively, and the production | generation efficiency of hypochlorous acid water can be raised. The cross-sectional area of the groove forming the second flow path P2 is preferably at least twice as large as the cross-sectional area of the groove forming the first flow path P1, and more preferably at least three times. In the embodiment, the cross-sectional area of the shallow first flow path P1 is 8 mm × 2 mm = 16 mm ^2, and the cross-sectional area of the deep second flow path is 5 mm × 8 mm = 40 mm ² . In addition, the relationship between the width and depth of the flow channel groove is narrower and deeper in the second flow channel P2 than in the first flow channel P1, as in the embodiment. In this case, it is possible to reduce the area where the second flow path P2 is in contact with the anode 14, and to reduce the influence of the efficiency reduction of the second flow path P2.

  The second flow path P2 having a large cross-sectional area is provided to face the periphery of the anode 14 having a relatively low chlorine ion concentration. Therefore, the first flow path P1, which is the main component of the reaction, can be disposed so as to face the central portion of the anode 14 having a high chlorine ion concentration, and the efficiency of hypochlorous acid production can be increased. The shape of the first flow path P1 is desirably a linear flow path in order to reduce the resistance of the water flow.

  As described above, according to the first embodiment, there is provided an electrolyzed water generating device in which the ion concentration is increased without reducing the flow rate of water flowing through the anode chamber, and electrolysis efficiency and electrolyzed water generation efficiency are improved. can do.

  Next, an electrolyzed water generating apparatus according to a modification will be described. In the modification described below, the same parts as those of the first embodiment described above are denoted by the same reference numerals, and the detailed description thereof is omitted, and the parts different from those of the first embodiment are mainly described. This will be explained in detail.

  FIG. 9 is a perspective view showing an anode cover of an electrolyzed water generating apparatus according to a modification. As shown in this figure, according to the modification, the first flow path P1 provided in the anode chamber 15b of the anode cover 24 is formed by one flow groove 65 extending in a bellows shape. The first flow path P1 extends over substantially the entire area of the anode chamber 15b so as to be in contact with the substantially entire area of the anode 14. The lower end of the first flow path P1 communicates with the lower lateral groove 66a. The upper end of the first flow path P1 communicates with the upper lateral groove 66a.

  Also in the modified example configured as described above, it is possible to obtain the same operational effects as those of the first embodiment described above. That is, even when the first flow path P1 is a single long flow path, the flow rate of the water flowing through the first flow path P can be lowered and the flow rate can be reduced.

The present invention is not limited to the above-described embodiments as they are, and can be embodied by modifying the constituent elements without departing from the scope of the invention in the implementation stage. In addition, various inventions can be formed by appropriately combining a plurality of components disclosed in the embodiment. For example, some components may be deleted from all the components shown in the embodiment. Furthermore, constituent elements over different embodiments may be appropriately combined.
For example, the electrolytic cell is not limited to a three-chamber type, and may have a two-chamber configuration as long as it has an anode chamber. The electrolytic solution may be other than salt water, and the generated electrolytic water may be electrolytic water other than hypochlorous acid water.

10 ... electrolytic cell, 14 ... anode, 15a ... intermediate chamber, 15b ... anode chamber, 15c ... cathode chamber,
14 ... anode, 16 ... anion exchange membrane, 18 ... cation exchange membrane, 20 ... cathode,
22 ... Intermediate frame (partition wall), 24 ... Anode cover (first cover member),
26 ... Anode cover (second cover member), 40 ... Sealing material, 40a ... Through hole,
40b ... annular part, 40c ... connecting part, 50 ... fixing bolt, 52 ... nut,
70 ... Pressing rib, 70a ... Cylindrical part, 70b ... Connecting part

Claims (10)

An electrolytic cell having an anode and a cathode; an anode chamber facing the anode and covering the anode; and a cathode chamber facing the cathode and covering the cathode;
The electrolytic cell includes a plurality of channels that are provided in the anode chamber and face the anode, and the plurality of channels are a first channel that allows water to flow at a first flow rate in contact with the anode. And a second flow path for flowing water at a second flow rate higher than the first flow rate in a state where the water is in contact with the anode.   2. The electrolyzed water generating device according to claim 1, wherein an area of a region in contact with the first flow path in the anode is at least twice as large as an area of a region in contact with the second flow path.   3. The electrolyzed water generating device according to claim 1, wherein a cross-sectional area in a direction orthogonal to the flow direction of the second flow path is larger than a cross-sectional area in a direction orthogonal to the flow direction of the first flow path.   The electrolyzed water generating apparatus according to claim 3, wherein a cross-sectional area in a direction orthogonal to the flow direction of the second flow path is twice or more larger than a cross-sectional area in a direction orthogonal to the flow direction of the first flow path.   5. The electrolysis according to claim 1, wherein the first flow path is provided to face a central portion of the anode, and the second flow path is opposed to a peripheral edge portion of the anode. Water generator.   6. The electrolyzed water generation according to claim 1, wherein the first flow path includes a plurality of first flow paths that are provided to face the central portion of the anode and extend linearly. apparatus.   The plurality of flow paths are provided to face the central portion of the anode, respectively, and are respectively positioned to face the plurality of first flow paths that extend linearly and the peripheral edge of the anode. The electrolyzed water generating apparatus according to claim 1, further comprising: the second flow path provided on both sides of the one flow path.   6. The electrolyzed water generating device according to claim 1, wherein the first flow path continuously extends in a bellows shape and faces the central portion of the anode.   The width of the second flow path is smaller than the width of the first flow path, and the depth of the second flow path is deeper than the depth of the first flow path. The electrolyzed water generating apparatus described in 1. An intermediate chamber, an anode chamber having an anode partitioned by a first diaphragm in one of the intermediate chambers, and a cathode chamber having a cathode partitioned by a second diaphragm in the other of the intermediate chambers. In an electrolyzed water generating apparatus for flowing an electrolytic solution and flowing water to the anode chamber and the cathode chamber to generate acidic water and alkaline water,
An electrolyzed water generating apparatus characterized in that a plurality of channels are provided in the anode chamber, the first channel is a main channel, and the second channel is a channel having a large cross-sectional area.

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