JP6650586B2 - Electrolyzed water generator - Google Patents

Description

  The present disclosure relates to an electrolyzed water generation device.

  It is known that alkaline water contributes to maintenance and promotion of physical health. For example, alkaline water having a pH of about 9.5 is effective in improving gastrointestinal conditions. Alkaline water having a pH higher than 10 is used for cooking and the like. Alkaline water with a high dissolved hydrogen concentration is thought to contribute to the removal of active oxygen, which is presumed to cause aging and disease.

  Patent Literature 1 discloses an example of an electrolyzed water generator for generating alkaline water having a high dissolved hydrogen concentration. The electrolyzed water generating apparatus includes a first anode cell, a first cathode cell, and a second anode cell to which the acidic water generated in the first anode cell is supplied, in addition to the diaphragm, a first cathode cell. A second cathode vessel to which the alkaline water generated in the vessel is supplied, and an ion exchange membrane that partitions the second anode vessel and the second cathode vessel. In the second anode cell and the second cathode cell, water is electrolyzed by a solid polymer membrane (SPE) method.

JP 2005-40781 A

  According to the electrolyzed water generator of Patent Document 1, since the alkaline water generated in the first cathode cell is supplied to the second cathode cell, scale such as calcium carbonate adheres to the second cathode cell. There is. The attached scale can be removed using acidic water, but in that case, the electrode of the second cathode tank, the ion exchange membrane, and the like may be chemically damaged. In addition, since the acidic water generated in the first anode cell is supplied to the second anode cell separately from the second cathode cell, there is a possibility that the components of the second anode cell may be chemically damaged. is there.

  An object of the present disclosure is to provide an electrolyzed water generation apparatus that can generate alkaline water having a high dissolved hydrogen concentration and that is less likely to chemically damage components.

  One embodiment of the electrolyzed water generation device according to the present disclosure includes a first water tank, a second water tank, a third water tank, a fourth water tank, and a first water tank that can be connected to a raw water channel that supplies raw water. A first electrode provided in the second water tank, a second electrode corresponding to the first electrode, a third electrode provided in the third water tank, and a fourth electrode provided in the fourth water tank. , A fourth electrode corresponding to the third electrode, an ion exchange membrane for partitioning the first water tank and the second water tank, and a first communication path communicating the second water tank and the fourth water tank. And

  An alkaline water having a high dissolved hydrogen concentration can be generated, and an electrolyzed water generating apparatus in which constituent elements are hardly damaged chemically can be provided.

FIG. 1 is an overall schematic diagram of the electrolyzed water generation device according to the first embodiment. FIG. 2 is an overall schematic diagram of the electrolyzed water generation device of the second embodiment. FIG. 3 is an overall schematic diagram of the electrolyzed water generation device of the third embodiment. FIG. 4 is an overall schematic diagram of the electrolyzed water generation device of the fourth embodiment.

(Example of the form that the electrolyzed water generation device can take)
One embodiment of the electrolyzed water generation device according to the present disclosure includes a first water tank, a second water tank, a third water tank, a fourth water tank, and a first water tank that can be connected to a raw water channel that supplies raw water. A first electrode provided in the second water tank, a second electrode corresponding to the first electrode, a third electrode provided in the third water tank, and a fourth electrode provided in the fourth water tank. , A fourth electrode corresponding to the third electrode, an ion exchange membrane for partitioning the first water tank and the second water tank, and a first communication path communicating the second water tank and the fourth water tank. And

  According to the above electrolyzed water generation device, when a voltage is applied to the first electrode and the second electrode such that the potential of the first electrode is higher than the potential of the second electrode, Hydrogen water with a high dissolved hydrogen concentration is generated. Next, when a voltage is applied to the third electrode and the fourth electrode so that the potential of the third electrode is higher than the potential of the fourth electrode, an alkaline solution having an increased pH in the fourth water tank. Hydrogen water is generated. As described above, by performing the water treatment for increasing the dissolved hydrogen concentration in the first water tank and the second water tank provided on the upstream side of the third water tank and the fourth water tank, the alkaline hydrogen water is reduced. No water is supplied to the first water tank and the second water tank. Therefore, scale such as calcium carbonate does not easily adhere to the first water tank and the second water tank, and the necessity of dissolving the scale with acidic water is reduced, and the first water tank and the second water tank are chemically damaged. Hard to do. Further, since the acidic water generated in the third water tank is not supplied to the first water tank and the second water tank, the ion exchange membrane, the first water tank, and the second water tank may be chemically damaged. It is further reduced.

  According to one example of the electrolyzed water generation device, the electrolyzed water generation device further includes a second communication path that communicates the first water tank and the third water tank.

  According to the above-mentioned electrolyzed water generator, the water used in the first water tank is reused in the third water tank, so that the amount of raw water used in the electrolyzed water generator is reduced.

  According to one example of the electrolyzed water generating apparatus, the electrolyzed water generating apparatus further includes a first pressurizing unit that can pressurize the water in the second water tank.

  According to Henry's law, when a gas having low solubility and not reacting with a solvent is dissolved in a fixed temperature and a fixed volume of the solvent, the amount of the gas dissolved in the solvent is proportional to the partial pressure of the gas. Hydrogen has low solubility in water and follows Henry's law. For this reason, according to the above-mentioned electrolyzed water generating apparatus having a pressurizing unit, by increasing the water pressure of the water in the second water tank, the amount of hydrogen dissolved in the water increases, and the dissolved hydrogen concentration of the hydrogen water increases. Can be further enhanced.

  According to one example of the electrolyzed water generation device, the first pressurizing unit is provided in the first communication path.

  According to the above-mentioned electrolyzed water generating apparatus, since the alkaline water does not pass through the pressurizing section, the scale hardly adheres to the pressurizing section.

  According to an example of the electrolyzed water generation device, the electrolyzed water generator further includes a first water passage for extracting the electrolyzed water from the fourth water tank, and the first pressurizing unit is provided in the first water passage.

  According to the above electrolyzed water generation device, the water in the second water tank and the water in the fourth water tank can be pressurized by limiting the flow rate in the first water path. For this reason, water with a higher dissolved hydrogen concentration can be generated in the second water tank.

  According to an example of the electrolyzed water generation device, the third water tank can be connected to a raw water channel that supplies raw water.

  According to the above electrolyzed water generation device, when a voltage is applied to the third electrode and the fourth electrode such that the potential of the third electrode is higher than the potential of the fourth electrode, An oxidation reaction of water occurs, and a reduction reaction of water occurs in the fourth water tank. Since raw water is supplied to the third water tank instead of water having a high dissolved oxygen concentration, an oxidation reaction in the third water tank is likely to occur. Accordingly, a reduction reaction in the fourth water tank is likely to occur, and the pH of the alkaline hydrogen water generated in the fourth water tank is easily increased.

  According to an example of the electrolyzed water generation apparatus, the electrolyzed water generation apparatus further includes a salinity passage capable of supplying water in which the electrolyte is dissolved to the third water tank.

  According to the above electrolyzed water generation device, electrolysis can be promoted without adding an electrolyte to water supplied to the fourth water tank. For this reason, when the electrolyte to be added is a salt, the water supplied to the fourth water tank hardly contains a salt, and alkaline hydrogen water more suitable for drinking can be generated.

  According to one example of the electrolyzed water generation device, the electrolyzed water generation device further includes a second pressurizing unit provided in the second communication passage and capable of pressurizing water in the first water tank.

  According to the above-mentioned electrolyzed water generation device, the water pressure in the first water tank and the water pressure in the second water tank can be made substantially equal. Thereby, it is possible to prevent the load based on the internal pressure difference between the first water tank and the second water tank from being applied to the ion exchange membrane.

  According to an example of the electrolyzed water generation device, the raw water channel is branched into a first water tank connection channel connected to the first water layer and a second water tank connection channel connected to the second water layer, and the first water tank connection is formed. A third pressure unit is further provided in the path. Further, a fourth pipe is provided on the first pipe for taking out the electrolyzed water from the third water tank and capable of pressurizing the water in the third water tank.

  According to the above electrolyzed water generating apparatus, the supply ratio between the raw water supplied to the first water tank and the second water tank through the raw water channel can be adjusted. Thereby, the amount of water passing through the first water tank 31 can be adjusted to a desired amount. Further, the amount of water mixed from the third water tank to the fourth water tank is suppressed, and the possibility of chemically damaging the fourth water tank is reduced.

(Embodiment 1)
As shown in FIG. 1, the electrolyzed water generator 10 includes a hydrogen water tank 30 having a first water tank 31 and a second water tank 35 partitioned by an ion exchange membrane 39, and a third water tank 30 separated by a diaphragm 49. And an alkaline water tank 40 having a fourth water tank 45 and a fourth water tank 45. The hydrogen water tank 30 and the alkaline water tank 40 are stored in the case 20.

  A faucet 1 and a flow path switch 2 are provided outside the electrolyzed water generator 10. Faucet 1 discharges tap water. The flow path switch 2 is attached to the faucet 1 and supplies tap water to the water supply port 11 according to a user's operation.

  The electrolyzed water generation device 10 includes a water supply port 11, a first water discharge port 12, and a second water discharge port 13 protruding toward the outside of the case 20. The water supply port 11 supplies tap water to the inside of the electrolyzed water generator 10. The first water outlet 12 discharges alkaline water or alkaline hydrogen water having a higher pH than tap water from the electrolyzed water generator 10. Alkaline hydrogen water has a higher dissolved hydrogen concentration than alkaline water. The second water outlet 13 discharges acidic water having a lower pH than tap water from the electrolyzed water generator 10.

  The case 20 includes a water purification unit 21, a first power supply 24, a second power supply 25, a first switch 26, a second switch 27, a raw water passage 50, a first communication passage 51, and a second communication passage. 52, a first water channel 53, and a first pipe 54 are stored. The water purification unit 21 is an activated carbon type and a filtration membrane type water purifier, and purifies tap water. Raw water that is water purified by the water purification unit 21 passes through the raw water channel 50 and is supplied to the hydrogen water tank 30. The water purification unit 21 includes an activated carbon unit 22 and a filtration membrane unit 23. The activated carbon unit 22 has activated carbon and removes organic substances, odors, residual chlorine and the like from tap water. The filtration membrane unit 23 has, as an example, a hollow fiber membrane made of polyethylene, and removes particles of 0.1 μm or more, germs, red rust, and the like from water that has passed through the activated carbon unit 22.

  The first power supply 24 and the second power supply 25 are DC power supplies used for performing electrolysis in the hydrogen water tank 30 and the alkaline water tank 40. The potential V1A of the anode 24X of the first power supply 24 is higher than the potential V1B of the cathode 24Y of the first power supply 24. The potential V2A of the anode 25X of the second power supply 25 is higher than the potential V2B of the cathode 25Y of the second power supply 25.

  The first switch 26 includes a first input terminal 26A, a second input terminal 26B, a first switch 26E, a first output terminal 26X, and a second output terminal 26Y. The first input terminal 26A and the second input terminal 26B are connected to the anode 24X and the cathode 24Y of the first power supply 24, respectively. The first switch 26 sets the potentials of the first output terminal 26X and the second output terminal 26Y to the potential V1A and the potential V1B according to the operation of the first switch 26E. Further, by operating the first changeover switch 26E, the mode can be switched to the normal mode, the reverse power mode, and the insulation mode. In the normal mode, the potential of the first output terminal 26X is set to the potential V1A, and the potential of the second output terminal 26Y is set to the potential V1B. In the reverse power mode, the potential of the first output terminal 26X is set to the potential V1B, and the potential of the second output terminal 26Y is set to the potential V1A. In the insulation mode, the first input terminal 26A and the second input terminal 26B are not electrically connected to the anode 24X and the cathode 24Y of the first power supply. The first changeover switch 26E is, for example, a button provided on the outer surface of the case 20.

  The second switch 27 includes a third input terminal 27A, a fourth input terminal 27B, a second switch 27E, a third output terminal 27X, and a fourth output terminal 27Y. Third input terminal 27A and fourth input terminal 27B are connected to anode 25X and cathode 25Y of second power supply 25, respectively. The second switch 27 sets the potentials of the third output terminal 27X and the fourth output terminal 27Y to the potential V2A and the potential V2B according to the operation of the second switch 27E. The mode can be switched between the normal mode and the reverse power mode by operating the second switch 27E. In the normal mode, the potential of the third output terminal 27X is set to the potential V2A, and the potential of the fourth output terminal 27Y is set to the potential V2B. In the reverse power mode, the potential of the third output terminal 27X is set to the potential V2B, and the potential of the fourth output terminal 27Y is set to the potential V2A. The second changeover switch 27E is, for example, a button provided on the outer surface of the case 20.

  The hydrogen water tank 30 electrolyzes raw water by the first power supply 24 and generates hydrogen water having a higher dissolved hydrogen concentration than the raw water. The hydrogen water tank 30 includes a first water tank 31, a second water tank 35, and an ion exchange membrane 39. The first water tank 31 includes a first inlet 32, a first outlet 33, and a first electrode 34. The second water tank 35 includes a second inlet 36, a second outlet 37, and a second electrode 38. The first water tank 31 and the second water tank 35 are formed integrally and are partitioned by the ion exchange membrane 39. The ion exchange membrane 39 is a cation exchange membrane, and can pass cations contained in water in the first water tank 31 and the second water tank 35. The shape of the hydrogen water tank 30 is preferably such that water easily passes from the first inlet 32 and the second inlet 36 to the first outlet 33 and the second outlet 37. The first electrode 34 and the first output terminal 26X are electrically connected. The second electrode 38 and the second output terminal 26Y are electrically connected. The first electrode 34 and the second electrode 38 are arranged so as to be in contact with the ion exchange membrane 39, and have a structure in which generated gas is easily released, for example, a porous structure. As a material for the electrode, it is preferable to use a corrosion-resistant material such as titanium for the base material and a platinum-based material plated on the surface as a catalyst.

  The alkaline water tank 40 electrolyzes the hydrogen water generated in the hydrogen water tank 30 by the second power supply 25 to generate alkaline hydrogen water. The alkaline water tank 40 includes a third water tank 41, a fourth water tank 45, and a diaphragm 49. The third water tank 41 includes a third inlet 42, a third outlet 43, and a third electrode 44. The fourth water tank 45 includes a fourth inlet 46, a fourth outlet 47, and a fourth electrode 48. The third water tank 41 and the fourth water tank 45 are formed integrally, and are isolated by a diaphragm 49. The shape of the alkaline water tank 40 is preferably such that water easily passes from the third inlet 42 and the fourth inlet 46 to the third outlet 43 and the fourth outlet 47. The third electrode 44 and the fourth electrode 48 have a shape in which the contact area with water passing through the alkaline water tank 40 is widened, for example, along the inner surface of the third water tank 41 and the inner surface of the fourth water tank 45. An elongated shape is preferred. The third electrode 44 and the third output terminal 27X are electrically connected. The fourth electrode 48 and the fourth output terminal 27Y are electrically connected.

  The first communication passage 51 connects the second outlet 37 and the fourth inlet 46. The second communication passage 52 connects the first outlet 33 and the third inlet 42. The raw water channel 50 communicates the filtration membrane unit 23 with the first inlet 32 and the second inlet 36. The first water channel 53 communicates the fourth outlet 47 with the first water outlet 12. The first pipe 54 connects the third outlet 43 and the second water outlet 13.

  The operation of the hydrogen water tank 30 of the electrolyzed water generator 10 will be described.

  Tap water discharged from the faucet 1 passes through the water supply port 11 and is supplied to the water purification unit 21. The raw water purified by the water purification unit 21 is supplied to the first water tank 31 and the second water tank 35 of the hydrogen water tank 30.

  When the first switch 26 is in the normal mode, the potential of the first electrode 34 is set to about V1A, and the potential of the second electrode 38 is set to about V1B. Since the potential of the first electrode 34 is higher than the potential of the second electrode 38, an oxidation reaction of raw water represented by the following equation [1] occurs in the first water tank 31.

  Formula [1] is a chemical reaction formula showing that water molecules H2O in raw water are oxidized to generate hydrogen ions H + and oxygen O2. The generated hydrogen ions H + move to the second water tank 35 via the ion exchange membrane 39.

  In the second water tank 35, the hydrogen ions H + transferred from the first water tank 31 undergo a reduction reaction represented by the following equation [2].

  Formula [2] is a chemical reaction formula showing that hydrogen ion H + is reduced to generate hydrogen H2. As the degree of progress of the electrolysis increases, the generated hydrogen H2 dissolves into the raw water in the first water tank 31, and the dissolved hydrogen concentration increases.

  Here, when the number of electrons e− is equal in the equations [1] and [2], the number of hydrogen ions H + is also equal. That is, the total number of hydrogen ions H + in the water in the first water tank 31 and the water in the second water tank 35 does not depend on the progress of the electrolysis. Since the hydrogen ions H + can move through the first water tank 31 and the second water tank 35 via the ion exchange membrane 39, theoretically, the water in the first water tank 31 and the water in the second water tank 35 Does not change. For this reason, the water generated in the second water tank 35 has a dissolved hydrogen concentration higher than that of the raw water, and has substantially the same pH as the raw water.

  The operation of the alkaline water tank 40 of the electrolyzed water generator 10 will be described.

  The water generated in the first water tank 31 is sent to the third water tank 41 via the second communication path 52. The water generated in the second water tank 35 is sent to the fourth water tank 45 via the first communication path 51. When the second switch 27 is in the normal mode, the potential of the third electrode 44 is set to about V2A, and the potential of the fourth electrode 48 is set to about V2B. Since the potential of the third electrode 44 is higher than the potential of the fourth electrode 48, an oxidation reaction of raw water represented by the following equations [3] and [4] occurs in the third water tank 41.

  Formula [3] is a chemical reaction formula showing that water molecules H2O in raw water are oxidized to generate hydrogen ions H + and oxygen O2. As the electrolysis proceeds, the concentration of hydrogen ions H + increases, and acidic water is generated. Formula [4] is a chemical reaction formula showing that chloride ion Cl- in raw water is oxidized to generate chlorine Cl2. The reaction of the formula [4] has priority over the reaction of the formula [3]. The generated chlorine Cl2 causes a chemical reaction represented by the following equation [5]. Formula [5] is a chemical reaction formula showing that hypochlorite HClO and hydrochloric acid HCl are generated from water molecules H2O and chlorine Cl2 in raw water.

  The acidic water generated in the third water tank 41 contains hypochlorite HClO. The generated water containing hypochlorite HClO is strongly acidic. Strongly acidic water may chemically damage components such as a water tank. Therefore, the electrolyzed water generator 10 discharges the acidic water contained in the hypochlorite HClO from the second water outlet 13 to the outside of the electrolyzed water generator 10 through the first pipe 54.

  On the other hand, in the fourth water tank 45, a reduction reaction of hydrogen water represented by the following equation [6] occurs.

  Formula [6] is a chemical reaction formula in which water molecules H2O in hydrogen water are reduced to generate hydroxide ions OH- and hydrogen H2. As the electrolysis proceeds, the concentration of hydroxide ion OH- increases, and alkaline hydrogen water is generated. The electrolysis of the alkaline water tank 40 is controlled so that the pH of the alkaline hydrogen water becomes a value suitable for drinking, for example, the pH becomes about 9.5.

  When the pH of water is alkaline, a chemical reaction represented by the following formula [7] occurs.

  Formula [7] is a chemical reaction formula showing that calcium carbonate CaCO3 is generated from calcium ion Ca2 + and carbonate ion CO32- in alkaline water. The generated alkaline hydrogen water is discharged from the first water outlet 12 to the outside via the first water channel 53.

  When the alkaline hydrogen water is supplied to a component such as a water tank, the generated calcium carbonate CaCO3 adheres to the component as a scale. It should be noted that the reaction of the formula [7] is not related to the dissolved hydrogen concentration of the hydrogen water, but is a property as alkaline water.

  Since the alkaline water is not supplied to the first water tank 31 and the second water tank 35 of the electrolyzed water generator 10, the scale does not easily adhere. For this reason, there is little need to dissolve the scale attached to the first water tank 31 and the second water tank 35 with acidic water, and the first water tank 31 and the second water tank 35 are not easily chemically damaged.

  Moreover, since the acidic water generated in the third water tank 41 when increasing the pH is not supplied to the first water tank 31 and the second water tank 35, the ion exchange membrane 39, the first water tank 31, and the second water tank 31 are not supplied. The risk of chemically damaging the water tank 35 is reduced, and the life of the electrolyzed water generator 10 is extended.

  In addition, since the electrolyzed water generator 10 includes the second communication path 52 that connects the first water tank 31 and the third water tank 41, the water used in the first water tank 31 is used for the third water tank 41. Can be used again for electrolysis. For this reason, the amount of raw water used by the electrolyzed water generator 10 decreases.

(Embodiment 2)
The electrolyzed water generator 10A according to the second embodiment has substantially the same configuration as the electrolyzed water generator 10 according to the first embodiment. The second embodiment is different from the configuration of the first embodiment in that a first pressurizing unit 60 is further provided and a first communication path 51A is provided instead of the first communication path 51.

  As shown in FIG. 2, a first pressurizing section 60 is provided in the first communication path 51A. The first pressurizing section 60 can pressurize the water in the second water tank 35. In one example, the first pressurizing section 60 includes an orifice 61 and pressurizes the water in the second water tank 35 by restricting the flow rate of the first communication passage 51A. As an example, when the water pressure in the first communication passage 51 is 100 kPa, the water pressure upstream of the orifice 61 in the first communication passage 51A increases to about 150 kPa.

  When the water pressure in the second water tank 35 increases, the amount of hydrogen dissolved in the water increases based on Henry's law. For this reason, the dissolved hydrogen concentration of the hydrogen water in the second water tank 35 is further increased. Further, since the first pressurizing section 60 is provided in the first communication path 51, non-alkaline water passes through the first pressurizing section 60. For this reason, it is difficult for the scale to adhere to the first pressure unit 60.

(Embodiment 3)
The electrolyzed water generator 10B of the third embodiment has substantially the same configuration as the electrolyzed water generator 10 of the first embodiment. The third embodiment is different from the configuration of the first embodiment in that a second water passage 55 and a third water passage 56 are provided instead of the second communication passage 52 and a third water outlet 14 is further provided. .

  As shown in FIG. 3, the third water outlet 14 penetrates the case 20. The second water channel 55 communicates the first outlet 33 and the third water outlet 14. The third water channel 56 connects the third inlet 42 and the raw water channel 50.

  When the first switch 26 is in the normal mode, an oxidation reaction expressed by the formula [3] occurs in the first water tank 31. Therefore, the water generated in the first water tank 31 has a high dissolved oxygen concentration. The generated water having a high dissolved oxygen concentration is discharged to the outside via the second water channel 55.

  The third water channel 56 supplies raw water from the raw water channel 50 to the third water tank 41. When the second switch 27 is in the normal mode, the supplied raw water undergoes an oxidation reaction represented by the formula [3]. An oxidation reaction is more likely to occur in the third water tank 41 of the electrolyzed water generator 10B to which raw water is supplied than in the third water tank 41 of the electrolyzed water generator 10 to which water having a high dissolved oxygen concentration is supplied. For this reason, a reduction reaction easily occurs in the fourth water tank 45 that forms a pair with the third water tank 41, and the pH of the fourth water tank 45 tends to increase.

(Embodiment 4)
The electrolyzed water generator 10C of the fourth embodiment has substantially the same configuration as the electrolyzed water generator 10A of the second embodiment. The fourth embodiment is different from the configuration of the second embodiment in further including a second pressing unit 70, a third pressing unit 80, and a fourth pressing unit 90. Further, a point that a raw water channel 50A is provided in place of the raw water channel 50, a point that a second communication channel 52A is provided in place of the second communication channel 52, and a point that a first pipe 54A is provided in place of the first pipe 54. Is different from the configuration of the second embodiment.

  As shown in FIG. 4, a second pressurizing section 70 is provided in the second communication path 52A. The second pressurizing unit 70 can pressurize the water in the first water tank 31. In one example, the second pressurizing unit 70 includes the orifice 71 and pressurizes the water in the first water tank 31 by restricting the flow rate of the second communication passage 52A. Thereby, the water pressure of the water in the first water tank 31 can be made substantially equal to the water pressure of the water in the second water tank 35 pressurized by the first pressurizing unit 60. Therefore, it is possible to prevent the load based on the internal pressure difference between the first water tank 31 and the second water tank 35 from being applied to the ion exchange membrane 39.

  As shown in FIG. 4, the raw water passage 50A is located upstream of the hydrogen water tank 30 and has a first water tank connection passage 50B connected to the first water tank 31 and a second water tank connection passage 50C connected to the second water tank 35. Branched to A third pressurizing section 80 is provided in the first water tank connection path 50B. In one example, the third pressing section 80 includes an orifice 81. The third pressurizing unit 80 can adjust the supply ratio between the raw water supplied to the first water tank 31 and the second water tank 35 through the raw water passage 50A. As a result, the amount of water passing through the first water tank 31 can be adjusted to a desired amount.

  Further, as shown in FIG. 4, a fourth pressurizing section 90 is provided in the first tube 54A. In one example, the fourth pressurizing section 90 includes an orifice 91 and can pressurize the water in the third water tank 41. Thereby, the water pressure in the third water tank 41 can be increased, and the difference between the internal pressure of the third water tank 41 and the internal pressure of the fourth water tank 45 can be reduced. As a result, the amount of water mixed from the third water tank 41 to the fourth water tank 45 can be suppressed. As described above, since the acidic water generated in the third water tank 41 contains hypochlorous acid HCLO, the fourth water tank 45 is controlled by suppressing the amount of water mixed in the fourth water tank 45. Is less likely to be chemically damaged.

  In the present embodiment, the configuration in which the second pressing unit 70, the third pressing unit 80, and the fourth pressing unit 90 are provided has been described, but the present invention is not limited to this. At least one of the second pressing unit 70, the third pressing unit 80, and the fourth pressing unit 90 may be provided. For example, a configuration in which only the second pressing unit 70 is provided among the second pressing unit 70, the third pressing unit 80, and the fourth pressing unit 90 is exemplified.

(Modification)
The description of each of the above embodiments is an example of a form that the electrolyzed water generation device according to the present disclosure can take, and is not intended to limit the form. The electrolyzed water generation device according to the present disclosure may take a form other than the embodiment, in which, for example, a modification of each of the above-described embodiments described below and at least two modifications that do not contradict each other are combined.

  -The method of preparing raw water can be arbitrarily changed. In the first example, well water or mineral water is purified by the water purification section 21 and purified water is supplied to the electrolyzed water generator 10. In the second example, the water purification unit 21 is omitted, and tap water is directly supplied to the electrolyzed water generator 10 as raw water.

  An addition unit for adding an electrolyte to raw water can be added to the electrolyzed water generator 10. The addition unit adds, for example, a salt, which is an example of an electrolyte, to raw water discharged from the water purification unit 21. Since the added salt becomes sodium ion Na + and chloride ion Cl− in water, electrolysis of raw water is promoted. For this reason, the pH of the generated alkaline water is easily increased.

  The third water channel 56 of the third embodiment can be changed to a salt water channel that can supply the water in which the electrolyte is dissolved to the third water tank 41. In this case, an adding section for adding the electrolyte is provided in the salt-water channel, or water in which the electrolyte is dissolved is supplied to the salt-water channel from the outside. The water in which the electrolyte is dissolved is easily electrolyzed. However, when the water supplied to the fourth water tank 45 contains salt, the taste of the alkaline water may change. According to the above-described modified example including the salting channel, since the water supplied to the fourth water tank 45 hardly contains a salt, it is possible to generate alkaline hydrogen water more suitable for drinking.

  -The installation place of the 1st pressurization part 60 is not restricted to the 1st communication path 51, but can be changed to arbitrary places in the downstream of the 2nd water tank 35. In the first example, the first pressure unit 60 is provided in the first water channel 53. In this case, the water pressure in the second water tank 35 and the fourth water tank 45 upstream of the first pressurizing unit 60 increases. In the second example, the first pressurizing unit 60 is provided in an external pipe connected to the first water outlet 12. In the third example, the first pressurizing section 60 is provided in the second water tank 35. In this case, for example, an orifice 61 is provided in the second water tank 35.

  -The structure of the 1st press part 60, the 2nd press part 70, the 3rd press part 80, and the 4th press part 90 can be changed arbitrarily. In a first example, these pressurizers include valves that regulate the flow of water. In a second example, these pressurizations include protrusions that provide resistance to water flowing in the tube.

  -The configuration of the first communication path 51 can be arbitrarily changed. In one example, the first communication path 51 further connects the second water tank 35 and the third water tank 41. In this case, there is no need to provide a separate water passage from the first communication passage 51 between the first water tank 31 and the second water tank 35 and the third water tank 41 and the fourth water tank 45. The configuration can be simplified.

  The electrolyzed water generation device according to the present disclosure can be applied to home electric appliances that use a large amount of water, or that are difficult to repair the components, because the components are hardly damaged chemically and the life of the device can be extended. .

Reference Signs List 10 electrolyzed water generator 10A electrolyzed water generator 10B electrolyzed water generator 10C electrolyzed water generator 31 first water tank 34 first electrode 35 second water tank 38 second electrode 39 ion exchange membrane 41 third water tank 44 Third electrode 45 Fourth water tank 48 Fourth electrode 50 Raw water path 50A Raw water path 50B First water tank connection path 50C Second water tank connection path 51 First communication path 51A First communication path 52 Second communication path 52A 2nd communication path 53 1st waterway 54 1st pipe 54A 1st pipe 60 1st pressurization part 70 2nd pressurization part 80 3rd pressurization part 90 4th pressurization part

Claims (9)

A first water tank and a second water tank connectable to a raw water channel for supplying raw water;
A third aquarium,
A fourth aquarium,
A first electrode provided in the first water tank;
A second electrode provided in the second water tank and corresponding to the first electrode;
A third electrode provided in the third water tank;
A fourth electrode provided in the fourth water tank and corresponding to the third electrode;
An ion exchange membrane that partitions the first water tank and the second water tank;
A first communication passage communicating between the second water tank and the fourth water tank;
An electrolyzed water generating apparatus, wherein the first electrode and the second electrode are in contact with the ion exchange membrane, and the third electrode and the fourth electrode are separated from the diaphragm .   The electrolyzed water generation device according to claim 1, further comprising a second communication path that communicates the first water tank and the third water tank.   The electrolyzed water generation device according to claim 1 or 2, further comprising a first pressurizing unit capable of pressurizing water in the second water tank.   The electrolyzed water generating apparatus according to claim 3, wherein the first pressurizing unit is provided in the first communication path.   5. The electrolytic water generation according to claim 3, further comprising a first water passage for taking out the electrolyzed water from the fourth water tank, wherein the first pressurizing unit is provided in the first water passage. apparatus.   The electrolyzed water generator according to any one of claims 1 to 5, wherein the third water tank is connectable to the raw water channel.   The electrolyzed water generation device according to any one of claims 1 to 6, further comprising a salting channel capable of supplying water in which an electrolyte is dissolved to the third water tank.   The electrolyzed water generating apparatus according to claim 3, further comprising a second pressurizing unit provided in the second communication passage and capable of pressurizing water in the first water tank.   The raw waterway is branched into a first water tank connection path connected to the first water layer and a second water tank connection path connected to the second water layer, and the first water tank connection path is connected to a third tank. A pressure part is further provided, provided in the first pipe which takes out electrolyzed water from the third water tank, and further comprising a fourth pressure part capable of pressurizing the water in the third water tank. Item 9. An electrolyzed water generator according to item 8.

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