Electrolytic solution generation device

Abstract

To provide an electrolytic solution generation device capable of improving efficiency of generating an electrolytic solution in an electrolysis unit.SOLUTION: An electrolytic solution generation device 100 comprises an electrolysis unit 1, an elastic body 2, and a housing 3. The electrolysis unit 1 includes a first electrode 13 and a second electrode 11 that are arranged in a first direction D1, and electrolyzes liquid. The elastic body 2 presses the first electrode 13 of the electrolysis unit 1 in the first direction D1. The electrolysis unit 1 and the elastic body 2 are disposed inside the housing 3. The housing 3 has an inflow port through which liquid to be fed to the electrolysis unit 1 flows in and an outflow port through which an electrolytic solution generated in the electrolysis unit 1 flows out. The housing 3 includes a cover 32 having a plurality of protrusion rows on an inner surface 33 facing the inside. Each of the plurality of protrusion rows includes a plurality of protrusions 332 arranged to be spaced apart from one another in a second direction D2. The plurality of protrusion rows is arranged to be spaced apart from one another in a third direction D3. The plurality of protrusion rows presses the second electrode 11 of the electrolysis unit 1 in the first direction D1.SELECTED DRAWING: Figure 3

Description

[Technical field]

[0001] The present disclosure relates to an electrolytic liquid generating device. [Background technology]

[0002] Conventionally, as an electrolytic liquid generating device, an ozone water generating device that generates ozone water (electrolytic liquid) in which ozone (electrolysis product) is dissolved in water is known. The electrolysis unit has a pair of electrodes and a conductive film disposed between the pair of electrodes. Then, by generating a potential difference between the pair of electrodes while the electrolysis unit is immersed in water, an electrolytic process is performed in which an electrochemical reaction occurs in the water, and ozone water is generated (for example, see Patent Document 1). The electrolysis unit is contained in a housing equipped with an electrode case lid (cover). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2017-176993 A Summary of the Invention [Problem to be solved by the invention]

[0004] In the electrolytic liquid production device of Patent Document 1, a protrusion provided on the electrode case lid presses the electrodes of the electrolytic unit. However, if the force with which the protrusion on the electrode case lid presses the electrolytic unit is uneven in a direction perpendicular to the direction in which the pair of electrodes face each other, the electrodes may warp, causing a bias in the electrical resistance of the electrolytic unit and reducing the efficiency of production of the electrolytic liquid.

[0005] An object of the present disclosure is to provide an electrolytic liquid generation device capable of improving the efficiency of generating electrolytic liquid in an electrolysis section. [Means for solving the problem]

[0006] An electrolytic liquid generating device according to one aspect of the present disclosure includes an electrolytic unit, an elastic body, and a housing. The electrolytic unit has a first electrode and a second electrode aligned in a first direction, which is a lamination direction, and electrolytically processes a liquid. The elastic body presses the first electrode of the electrolytic unit in the first direction. The housing has the electrolytic unit and the elastic body disposed therein. The housing has an inlet and an outlet. The inlet is through which the liquid supplied to the electrolytic unit flows in. The outlet is through which the electrolytic liquid generated in the electrolytic unit flows out. The housing includes a cover having a plurality of rows of protrusions on an inner surface facing the interior. Each of the plurality of rows of protrusions includes a plurality of protrusions aligned at intervals in a second direction intersecting the first direction. The plurality of rows of protrusions are aligned at intervals in a third direction intersecting the first direction and the second direction. The plurality of rows of protrusions press the second electrode of the electrolytic unit in the first direction. Effect of the Invention

[0007] According to an electrolytic liquid production device according to one aspect of the present disclosure, it is possible to improve the efficiency of production of the electrolytic liquid in the electrolysis section. [Brief description of the drawings]

[0008] [Figure 1] FIG. 1 is an exploded perspective view of an electrolytic liquid generating device according to an embodiment. [Diagram 2] FIG. 2 is a perspective view of a cover of the electrolytic liquid generating device. [Diagram 3] FIG. 3 is an end view of the electrolytic liquid production device of the above with the second direction as the normal direction. [Figure 4] FIG. 4 is a partial end view of the electrolytic liquid generating device of the above, with the first direction being the normal direction. [Diagram 5] FIG. 5 is a partial end view of the electrolytic liquid generation device, the normal direction of which is the third direction. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] Hereinafter, the electrolytic liquid generating device according to the embodiment will be described in detail with reference to the drawings. However, each figure described in the following embodiment is a schematic diagram, and the size and thickness ratio of each component do not necessarily reflect the actual dimensional ratio. In addition, the embodiment implemented below is merely one example of the embodiment of the present disclosure. The present disclosure is not limited to the following embodiment, and various modifications are possible depending on the design, etc., as long as the effect of the present disclosure can be achieved.

[0010] (Embodiment) (1) Overview First, an overview of an electrolytic liquid generating apparatus 100 according to an embodiment will be described with reference to FIGS. 1 to 3. FIG.

[0011] The electrolytic liquid generating device 100 according to the embodiment generates an electrolytic liquid by subjecting a liquid to electrolytic processing. In the present embodiment, as an example, the electrolytic liquid generating device 100 is an ozone water generating device that uses tap water supplied from a waterworks as the liquid and generates ozone water as the electrolytic liquid. The electrolytic liquid generating device 100, which is an ozone water generating device, generates ozone (electrolysis product) by electrolytic processing that electrolyzes tap water, and generates ozone water by dissolving the ozone in the tap water. Ozone water is effective for sterilization, deodorization, and decomposition of organic matter, and is therefore widely used in various fields such as water treatment, hygiene, food, and medicine.

[0012] As shown in Figs. 1 and 3, the electrolytic liquid generating device 100 according to the embodiment includes an electrolysis unit 1, an elastic body 2, a housing 3, and a power supply unit 4. The electrolysis unit 1 includes a pair of electrodes, a first electrode and a second electrode, and a conductive film 12 located between the pair of electrodes. In the embodiment, the first electrode is an anode 13, and the second electrode is a cathode 11. The electrolysis unit 1 electrolyzes a liquid. The electrolysis unit 1 is disposed inside the housing 3. The power supply unit 4 supplies power to the electrolysis unit 1 for electrolyzing the liquid.

[0013] The housing 3 includes a case 31 and a cover 32. The case 31 includes a case body 311 having a storage section 3110. As shown in Figs. 2 and 3, the cover 32 has a plurality of convex rows 331 arranged in the third direction D3 on an inner surface 33 that closes the opening 3111 of the storage section 3110 of the case body 311. Each of the plurality of convex rows 331 includes a plurality of convex sections 332 arranged at intervals in the second direction D2. The plurality of convex rows 331 press the cathode 11, which is the second electrode of the electrolysis section 1. This allows the cover 32 to hold the electrolysis section 1 so as not to interfere with the flow of the liquid in the vicinity of the electrolysis section 1. This improves the efficiency of generating the electrolytic liquid.

[0014] (2) Details Next, the details of the electrolytic liquid generating device 100 according to the embodiment will be described with reference to Figs. 1 to 5. In the following description, the stacking direction of the cathode 11, the conductive film 12, and the anode 13 in the electrolytic section 1 described later is defined as a first direction D1, the longitudinal direction of the housing 3 described later is defined as a second direction D2, and the short side direction (width direction) of the housing 3 is defined as a third direction D3. However, these directions are not intended to limit the directions in which the electrolytic liquid generating device 100 is used. Also, the arrows indicating "D1", "D2", and "D3" in the drawings are merely indicated for the purpose of explanation, and none of them have any substance.

[0015] The electrolytic liquid generating device 100 according to the embodiment includes an electrolysis section 1, an elastic body 2, a housing 3, a power supply section 4, and a plurality of O-rings 5 ​​(two in the illustrated example), as shown in FIG.

[0016] (2.1) Housing The electrolysis unit 1 and the elastic body 2 are disposed inside the housing 3. The housing 3 includes a case 31 and a cover 32, as shown in FIG.

[0017] The case 31 includes a case body 311. The case body 311 is formed in a hollow rectangular parallelepiped shape with one end (upper surface in FIG. 1) in the first direction D1 open. That is, the case body 311 has a storage section 3110. In addition, a connection section 312 and a connection section 313 are formed at both ends of the case 31 in the second direction D2. The connection section 312 is formed with an inlet for liquid, and the inlet is connected to the storage section 3110. In addition, the connection section 313 is formed with an outlet for the electrolytic liquid, and the outlet is connected to the storage section 3110. That is, the liquid that flows in from the inlet is electrolytically treated in the storage section 3110 and flows out from the outlet as the electrolytic liquid.

[0018] The cover 32 is a rectangular plate as shown in Figures 1 and 2. The cover 32 contacts the case body 311 along the first direction D1 and covers the opening 3111 of the case body 311. In addition, a plurality of convex rows 331 (see Figures 2 and 3) are formed on the inner surface 33 of the cover 32 that faces the opening 3111 of the case body 311. Details will be described later.

[0019] Furthermore, the case body 311 has a pair of through holes 3112 for allowing the pair of electrode pins 41 to pass therethrough.

[0020] The case 31 and the cover 32 are made of a non-conductive resin such as acrylic.

[0021] (2.2) Elastic body and electrolytic part The housing portion 3110 of the case 31 houses the elastic body 2, the power supply body 44 of the power supply unit 4, the anode 13, the conductive film 12, and the cathode 11. More specifically, the elastic body 2, the power supply body 44, the anode 13, the conductive film 12, and the cathode 11 are layered in this order along the first direction D1.

[0022] The elastic body 2 is formed in a rectangular parallelepiped shape using an elastic material such as rubber. The elastic body 2 includes a rectangular parallelepiped main body 21 and a plurality of protrusions 22 and protrusions 23. The plurality of (six in FIG. 1) protrusions 22 are formed at one end (first end) of the main body 21 in the first direction D1, at an end in the third direction D3. The plurality of (two in FIG. 1) protrusions 23 are formed at one end (first end) of the main body 21 in the first direction D1, at an end in the second direction D2. One end (first end) of the elastic body 2 is in contact with a power feeder 44 of the power feed unit 4 described later, and the other end (second end) is in contact with an inner surface facing the housing unit 3110 of the case main body 311. The elastic body 2 presses the power feeder 44 and the anode 13 in the first direction D1.

[0023] The anode 13 is a first electrode of the electrolysis unit 1. The anode 13 is formed in a rectangular shape that is elongated in the second direction D2. One surface (first surface) of the anode 13 contacts a power feeder 44 of the power feed unit 4 described below, and at least a portion of the other surface (second surface) contacts the conductive film 12. The anode 13 is formed, for example, by forming a conductive diamond film on a rectangular plate-shaped conductive substrate made of silicon.

[0024] The conductive film 12 is located between the anode 13 and the cathode 11. The conductive film 12 is, for example, a proton conductive ion exchange film. The conductive film 12 has a plurality of slits extending in the third direction D3. The conductive film 12 is, for example, comb-shaped. The conductive film 12 includes a main piece 121 having a longitudinal shape in the second direction D2 and a plurality of protruding pieces 122 having the third direction D3 as a longitudinal direction. The plurality of protruding pieces 122 are arranged at equal intervals along the second direction D2. Note that the extension direction of each of the plurality of protruding pieces 122 may be a direction intersecting the second direction D2, and does not necessarily have to coincide with the third direction D3. The length of the protruding piece 122 in the third direction D3 is greater than the width of the anode 13 in the third direction D3. That is, the length of the slit of the conductive film 12 in the third direction D3 is greater than the width of the anode 13 in the third direction D3.

[0025] The cathode 11 is a second electrode of the electrolysis unit 1. The cathode 11 is integrally formed with an electrode plate 42A and a spring portion 43A, which will be described later. The cathode 11 has a rectangular shape that is elongated in the second direction D2, and is in contact with the conductive film 12 in the first direction D1. The cathode 11 is made of a conductive material, such as a titanium alloy.

[0026] The cathode 11 has a plurality of through holes 111 arranged at equal intervals along the second direction D2. Each of the plurality of through holes 111 has the same shape, for example, a V-shape. As a result, at least a part of the interface between the cathode 11 and the conductive film 12 comes into contact with the liquid (tap water). As a result, the interface between the anode 13 and the conductive film 12 also comes into contact with the liquid (tap water). Therefore, ozone generated on the surface of the anode 13 is easily dissolved in the liquid (tap water) in the space between the cathode 11 and the cover 32 (hereinafter referred to as the "main flow path"). In addition, it is possible to reduce a decrease in the efficiency of ozone generation caused by ozone gas remaining inside the electrolysis unit.

[0027] Furthermore, the width of the multiple through holes 111 of the cathode 11 in the third direction D3 is larger than the width of the slits of the conductive film 12 in the third direction D3. Therefore, in a plan view from the first direction D1, the inside of the through hole 111 has a portion that does not overlap with either the conductive film 12 or the anode 13. That is, the electrolysis unit 1 has a through hole that penetrates the electrolysis unit 1 in the first direction D1. Therefore, since the liquid (tap water) can pass through the electrolysis unit 1 along the first direction D1, the ozone concentration in the ozone water in the storage unit 3110 of the case 31 is made uniform, and the generation efficiency of the ozone water is improved.

[0028] (2.3) Power supply section The power supply unit 4 supplies power for electrolyzing the liquid to the electrolysis unit 1. As shown in Fig. 1, the power supply unit 4 includes a plurality of (two in the illustrated example) electrode pins 41, a plurality of (two in the illustrated example) electrode plates 42A, 42B, a plurality of (two in the illustrated example) spring portions 43A, 43B, a power supply body 44, a plurality of (two in the illustrated example) nuts 45, a plurality of (two in the illustrated example) spring washers 46, and a plurality of (two in the illustrated example) washers 47. The electrode pins 41, the nuts 45, the spring washers 46, and the washers 47 are in one-to-one correspondence.

[0029] Each of the electrode pins 41 is elongated in the first direction D1. That is, the longitudinal direction of each electrode pin 41 is parallel to the first direction D1. Each electrode pin 41 has a flange portion 411, a threaded portion 412, and a shaft portion 413. In each electrode pin 41, the flange portion 411 is provided at a first end (upper end in FIG. 1) in the first direction D1. In each electrode pin 41, the threaded portion 412 is provided in a predetermined range including a second end (lower end in FIG. 1) in the first direction D1.

[0030] The electrode plates 42A and 42B have a through hole 421 through which the electrode pin 41 penetrates in the first direction D1. More specifically, in a plan view from the first direction D1, the through hole 421 has a shape that allows the shaft portion 413 to pass through but does not allow the flange portion 411 to pass through. As a result, in the electrode plates 42A and 42B, at least the flange portion 411 abuts against the electrode plates 42A and 42B when the shaft portion 413 of the electrode pin 41 is positioned in the through hole 421. The electrode plate 42A is electrically connected to the cathode 11 via the spring portion 43A. The electrode plate 42B is electrically connected to the power supply 44 via the spring portion 43B.

[0031] (3) Cover composition (3.1) Relationship with liquids 2 and 3, the cover 32 has an inner surface 33 that closes the opening 3111 of the storage section 3110 of the case body 311. That is, the inner surface 33 of the cover 32 faces the storage section 3110 of the case body 311. The cover 32 also has a plurality of (three in FIG. 2) protrusion rows 331 on the inner surface 33. The plurality of protrusion rows 331 are aligned in the third direction D3.

[0032] Each of the multiple convex portion rows 331 includes multiple convex portions 332 aligned in the second direction D2, as shown in Fig. 2. Each convex portion 332 presses the cathode 11 in the first direction D1, as shown in Fig. 3. That is, the electrolysis unit 1 is sandwiched between the elastic body 2 and the multiple convex portions 332 of the cover 32 in the first direction D1.

[0033] In each of the plurality of convex rows 331, the plurality of convex sections 332 are arranged at intervals in the second direction D2. As a result, in the main flow path 61 (see FIG. 3) of the liquid located between the electrolysis unit 1 and the inner surface 33 of the cover 32, the liquid can also flow in the third direction D3 across at least one of the convex rows 331. As a result, the ozone water generated in the vicinity of the through hole 111 of the cathode 11 in the electrolysis unit 1 and the tap water and ozone water flowing in the main flow path 61 are easily mixed. Therefore, the ozone is diffused in the main flow path 61, and the ozone in the vicinity of the through hole 111 of the cathode 11 can be diluted. Therefore, the ozone generated in the electrolysis unit 1 is easily dissolved in the tap water flowing in the main flow path 61, so that the ozone concentration of the electrolytic liquid can be improved. In addition, the decrease in the electrolysis efficiency caused by the ozone remaining inside the electrolysis unit 1 can be reduced.

[0034] Here, among the multiple convex portion rows 331, each of the two convex portion rows 331 arranged at both ends in the third direction D3 is referred to as an end row 331A. As shown in FIG. 3, the multiple convex portions 332A included in the end row 331A are located inward of the end 34 of the inner surface 33 in the third direction D3. In other words, the end row 331A is located inward of the end 34 of the inner surface 33 in the third direction D3. Here, the end 34 refers to the edge of the inner surface 33 extending in the second direction D2, and "the end row 331A is located inward of the end 34 of the inner surface 33 in the third direction D3" means that the end row 331A is not in contact with the end 34 of the inner surface 33 in the third direction D3.

[0035] As a result, between the end row 331A and the inner circumferential surface of the storage section 3110 of the case body 311, there is a sub-channel 62 through which the liquid flows. Here, the main channel 61 and the sub-channel 62 are adjacent to each other in the third direction D3 and are partitioned by the end row 331A. The end row 331A also has convex parts 332 arranged at intervals in the second direction D2. In other words, the main channel 61 and the sub-channel 62 communicate with each other in the second direction D2. Therefore, the ozone water in the main channel 61 and the tap water in the sub-channel 62 are easily mixed. As a result, the ozone in the ozone water near the electrolysis unit 1 is diluted, so that the ozone is easily dissolved near the electrolysis unit 1. In addition, the decrease in electrolysis efficiency caused by the ozone remaining inside the electrolysis unit 1 can be reduced. Furthermore, the ozone concentration of the ozone water in the sub-channel 62 increases, so that the ozone concentration of the ozone water generated by the electrolytic liquid generating device 100 can be improved.

[0036] (3.2) Relationship between the anode and the elastic body Moreover, the end row 331A is arranged at a position overlapping the anode 13 in the first direction D1. Here, "the end row 331A is arranged at a position overlapping the anode 13 in the first direction D1" means that a part of the anode 13 and the end row 331A are arranged in the first direction D1 in a plan view from the second direction D2. As a result, the force with which the multiple convex rows 331 press the electrolysis unit 1 in the first direction D1 is uniform in the third direction D3. Therefore, the cathode 11 is less likely to warp in the first direction D1. Furthermore, the end row 331A is arranged at a position overlapping the elastic body 2 in the first direction D1. More specifically, the end row 331A is located between two imaginary lines X1 passing through both ends of the elastic body 2 in the third direction D3 in a plan view from the second direction D2.

[0037] Here, for example, when the position where the end row 331A and the cathode 11 are in contact does not overlap with the anode 13, the balance between the force of the multiple convex rows 331 of the cover 32 pressing the electrolysis unit 1 in the first direction D1 and the force of the elastic body 2 pressing the electrolysis unit 1 in the first direction D1 is not uniform in the third direction D3. For example, when the end row 331A and the elastic body 2 do not overlap with each other in the first direction D1, the end row 331A is located outside the elastic body 2 in the third direction D3. That is, at a position outside the elastic body 2 in the third direction D3, the electrolysis unit 1 is pressed by a weak force from the elastic body 2 and is pressed by the cover 32 strongly. Therefore, in a plan view from the second direction D2, the cathode 11 may be warped such that the part in contact with the multiple convex rows 331 approaches the anode 13 and the other part moves away from the anode 13.

[0038] When such a warp occurs in the cathode 11, the distance between the cathode 11 and the anode 13 in the electrolysis unit 1 becomes biased, and the current density becomes biased. Therefore, in the portion where the distance between the cathode 11 and the anode 13 is wide, the current density decreases, and the ozone generation efficiency decreases. In addition, if there is a gap between the cathode 11 and the conductive film 12, or between the conductive film 12 and the anode 13, calcium compounds contained in tap water, for example, tend to accumulate in the gap as scale. Therefore, when there is a gap between the cathode 11 and the conductive film 12, or between the conductive film 12 and the anode 13, the electrical resistance of the portion where the distance between the cathode 11 and the anode 13 is widened tends to increase due to the accumulation of scale. Therefore, the bias in the current density becomes more noticeable in the electrolysis unit 1, the generation efficiency of ozone water decreases, and the life of the electrolytic liquid generation device 100 becomes shorter.

[0039] In contrast, in the electrolytic liquid generation device 100 according to the embodiment, the end row 331A is arranged at a position overlapping the anode 13 in the first direction D1. Also, in the electrolytic liquid generation device 100 according to the embodiment, the end row 331A is arranged at a position overlapping the elastic body 2 in the first direction D1. This makes it difficult for the cathode 11 to warp in the first direction D1, thereby making it possible to increase the ozone generation efficiency.

[0040] (3.3) Relationship with the cathode through-hole As shown in FIG. 4, the plurality of protrusions 332 included in the plurality of protrusion rows 331 press the cathode 11 in the first direction D1.

[0041] Here, in the multiple convex rows 331, the width in the second direction D2 of the multiple convex portions 332 differs between the end row 331A and the convex row 331B other than the end row. More specifically, the width d1 in the second direction D2 of each of the multiple convex portions 332B included in the convex row 331B other than the end row 331A is larger than the width d2 in the second direction D2 of each of the multiple convex portions 332A included in the end row 331A. As a result, in the convex row 331B other than the end row 331A among the multiple convex rows 331, the contact area between each of the multiple convex portions 332B and the cathode 11 is large, so that the cathode 11, the conductive film 12, and the anode 13 of the electrolysis unit 1 can be more uniformly contacted. Therefore, the current density in the electrolysis unit 1 can be made uniform. On the other hand, in the end row 331A, the distance between two adjacent convex portions 332A in the second direction D2 is wider, making it easier for the liquid and electrolyte liquid to move between the main flow path 61 and the sub-flow path 62, and making it possible to make the concentration of the ozone water uniform and thus facilitate the dissolution of ozone.

[0042] Moreover, each of the multiple protrusions 332 is in contact with a portion of the cathode 11 other than the through hole 111. More specifically, in each of the multiple protrusion rows 331, the width d2 of the protrusion 332A in the second direction D2 and the width d1 of the protrusion 332B in the second direction D2 are each narrower than or equal to the interval d3 of the multiple through holes 111 of the cathode 11 in the second direction D2. As a result, the multiple protrusions 332 included in the multiple protrusion rows 331 do not block the multiple through holes 111 of the cathode 11. Therefore, the multiple protrusions 332 do not hinder the flow of liquid between the interface between the cathode 11 and the conductive film 12 and the main flow path 61.

[0043] Here, the multiple protrusions 332 included in each of the multiple protrusion rows 331 are formed to have a polygonal shape with R portions formed at the apexes when viewed in a plan view from the first direction D1, so that the protrusions 332 are less likely to obstruct the flow of liquid.

[0044] (3.4) Relationship with the power supply As shown in FIG. 2, a pair of protrusions 35 are formed on the inner surface 33 of the cover 32. When the multiple protrusions 332 are defined as first protrusions, the protrusions 35 correspond to second protrusions. The pair of protrusions 35 can press the power supply unit 4 in the first direction D1. One of the pair of protrusions 35 can press the electrode pin 41 of the power supply unit 4 that is electrically connected to the anode 13 in the first direction D1. The other of the pair of protrusions 35 can press the electrode pin 41 that is electrically connected to the cathode 11 in the first direction D1.

[0045] When assembling the electrolytic liquid generating device 100, the elastic body 2, the power supply unit 4, and the electrolysis unit 1 are arranged in the accommodation unit 3110 with the opening 3111 of the accommodation unit 3110 of the case body 311 of the housing 3 facing upward. After that, the cover 32 is fixed to the case 31 so as to close the opening 3111 of the accommodation unit 3110, and then the housing 3 is turned over so that the cover 32 faces downward, and the O-ring 5, the washer 47, the spring washer 46, and the nut 45 are attached to each of the pair of electrode pins 41, and each of the multiple nuts 45 is tightened. Here, when the housing 3 is turned over, since the electrode pin 41 is not fixed in the first direction D1, there is a possibility that the electrode pin 41 will move toward the cover 32. Here, if the shaft portion 413 of the electrode pin 41 comes off the through hole 421 of the electrode plates 42A and 42B, it may be difficult to fix the electrode pin 41.

[0046] Each of the pair of protrusions 35 can press each of the pair of electrode pins 41. More specifically, each of the pair of protrusions 35 can hold the electrode pin 41 so that the shaft portion 413 of the electrode pin 41 does not come out of the through-holes 421 of the electrode plates 42A and 42B. This makes it easy to assemble the electrolytic liquid generating device 100.

[0047] The protrusion 35 may be in contact with the electrode pin 41 so that the electrode pin 41 does not move. Alternatively, the protrusion 35 may not be in contact with the electrode pin 41. In this case, the protrusion 35 has a height that prevents the shaft portion 413 of the electrode pin 41 from coming out of the through holes 421 of the electrode plates 42A and 42B when the electrode pin 41 and the protrusion 35 are in contact with each other. In other words, the distance between the protrusion 35 and the electrode plates 42A and 42B in the first direction D1 is shorter than the length of the shaft portion 413 of the electrode pin 41.

[0048] The height of each of the multiple protrusions 35 in the first direction D1 may be the same as or different from the height of the multiple convex portions 332. Also, the height of each of the multiple protrusions 35 may be the same as or different from each other. In this embodiment, the height of the protrusion 35 on the electrode plate 42A side is lower than the height of the protrusion 35 on the electrode plate 42B side.

[0049] (4) Effects The electrolytic liquid generating device 100 according to the embodiment includes an electrolysis unit 1, an elastic body 2, and a housing 3. The electrolysis unit 1 has an anode 13 and a cathode 11 arranged in a first direction D1, and electrolyzes a liquid. The elastic body 2 presses the first electrode 13 of the electrolysis unit 1 in the first direction D1. The electrolysis unit 1 and the elastic body 2 are arranged inside the housing 3. The housing 3 has an inlet through which tap water supplied to the electrolysis unit 1 flows in, and an outlet through which ozone water generated in the electrolysis unit 1 flows out. The housing 3 includes a cover 32 having a plurality of convex rows 331 on an inner surface 33 facing the inside. Each of the plurality of convex rows 331 includes a plurality of convex portions 332 arranged at intervals in the second direction D2. The plurality of convex rows 331 are arranged at intervals in the third direction D3. The plurality of convex rows 331 presses the cathode 11 of the electrolysis unit 1 in the first direction D1.

[0050] Therefore, according to the electrolytic liquid generation device 100 of this embodiment, flow of tap water and ozone water in the third direction D3 is likely to occur inside the housing 3, and ozone is likely to diffuse and dissolve inside the housing 3. Furthermore, since ozone generated in the electrolysis unit 1 is unlikely to remain in the vicinity of the electrolysis unit 1, the efficiency of ozone generation is unlikely to decrease. Therefore, the efficiency of ozone water generation is improved, and it is possible to generate highly concentrated ozone water.

[0051] In the electrolytic liquid generating device 100 according to the embodiment, in the third direction D3, the two end rows 331A located at both ends of the multiple convex portion rows 331 are both located inside the two ends 34 of the inner surface 33. A flow path, which is a path through which the liquid passes inside the housing 3, includes a main flow path 61 and a sub flow path 62 located between the electrolysis unit 1 and the cover 32. In the third direction D3, the main flow path 61 is located between the two end rows 331A. In the third direction D3, the sub flow path 62 is located outside the two end rows 331A. The main flow path 61 and the sub flow path 62 are in communication with each other.

[0052] Therefore, in the electrolytic liquid production device 100 according to the embodiment, water tends to move between the main flow path 61 in which the ozone water is produced and the sub-flow path 62 in which tap water flows, and therefore ozone tends to diffuse inside the housing 3. This improves the efficiency of production of ozone water, making it possible to produce highly concentrated ozone water.

[0053] Furthermore, in the electrolytic liquid production device 100 according to the embodiment, both of the two end rows 331A are arranged at positions overlapping the anode 13 in the third direction D3. This makes it difficult for the force with which the cover 32 presses the cathode 11 in the first direction D1 to become biased in the third direction. Therefore, the cathode 11 is unlikely to warp in the first direction D1, and therefore the electrical resistance of the electrolysis unit 1 is unlikely to become biased in the third direction D3. This improves the efficiency of production of ozone water.

[0054] Furthermore, in the electrolytic liquid generating device 100 according to the embodiment, both of the two end rows 331A are disposed at positions overlapping the elastic body 2 in the third direction D3. This makes it difficult for the forces of the cover 32 and the elastic body 2 pressing the electrolysis unit 1 in the first direction D1 to become biased in the third direction. This makes it even more difficult for the cathode 11 to warp in the first direction D1.

[0055] Moreover, in the electrolytic liquid generation device 100 according to the embodiment, the cathode 11 has a plurality of through holes 111 arranged at intervals in the second direction D2. In the second direction D2, the widths d1 and d2 of the plurality of protrusions 332 included in each of the plurality of protrusion rows 331 are narrower than or equal to the interval d3 between the plurality of through holes 111 of the cathode 11. This makes it possible to arrange the plurality of protrusions 332 so as not to block the through holes 111 of the cathode 11. Therefore, the ozone water is more likely to move along the third direction D3, making it possible to reduce a decrease in the generation efficiency of the ozone water.

[0056] In the electrolytic liquid generating device 100 according to the embodiment, in the second direction D2, the width d1 of the protrusions 332B included in each of the protrusion rows 331B other than those at both ends in the third direction D3 among the multiple protrusion rows 331 is larger than the width d2 of each of the multiple protrusions 332A included in the end row 331A located at both ends in the third direction D3 among the multiple protrusion rows 331. This allows the protrusion rows 331B to press the electrolysis unit 1 in the first direction D1 so as not to warp the cathode 11. Also, in each of the end rows 331A, it is possible to reduce the hindrance of the flow of ozone water in the third direction D3 and reduce the decrease in the generation efficiency of ozone water.

[0057] Moreover, in the electrolytic liquid generation device 100 according to the embodiment, the anode 13 and the cathode 11 are connected to the power supply unit 4. The cover 32 further has a protrusion 35 on the inner surface 33 that can press the power supply unit 4 in the first direction D1. This makes it possible to temporarily press the power supply unit 4 when assembling the electrolytic liquid generation device 100, improving assembly efficiency.

[0058] Furthermore, in the electrolytic liquid generation device 100 according to this embodiment, the height of the protrusion 35 from the inner surface 33 of the cover 32 is different from the height of the plurality of convex portion rows 331 from the inner surface 33 of the cover 32. This makes it possible to temporarily hold the power supply unit 4 in a suitable position in the first direction D1 when assembling the electrolytic liquid generation device 100, improving assembly efficiency.

[0059] (Modification) (1) In the electrolytic liquid generation device 100 according to the embodiment, the end row 331A is located inward of the end 34 of the inner surface 33 in the third direction D3. However, the end row 331A may be provided at the end 34 of the inner surface 33. Even in this configuration, the end row 331A does not impede the movement of the liquid and the electrolytic liquid in the third direction D3. Therefore, the efficiency of generating ozone water is improved, and it is possible to generate highly concentrated ozone water.

[0060] (2) In the electrolytic liquid generating apparatus 100 according to the embodiment, the cover 32 has three protrusion rows 331, but the cover 32 may have four or more protrusion rows 331. In this case, the two or more protrusion rows 331 other than the end row 331A have, for example, a configuration similar to the above-mentioned protrusion row 331B. This allows each of the multiple protrusion rows 331B to press the electrolysis unit 1 in the first direction D1 to prevent the cathode 11 from warping.

[0061] (3) In the electrolytic liquid generation device 100 according to this embodiment, the cover 32 has a pair of protrusions 35 , but the cover 32 may be provided with only one protrusion 35 .

[0062] (4) In the electrolytic liquid generating device 100 according to the embodiment, the liquid is tap water, and the electrolytic liquid is ozone water. However, the liquid and the electrolytic liquid are not limited to this, and the liquid and the electrolytic liquid may be any liquid as long as the electrolytic liquid is generated by electrolytic processing of a liquid.

[0063] (Aspect) The electrolytic liquid generating device (100) according to the first aspect includes an electrolysis unit (1), an elastic body (2), and a housing (3). The electrolysis unit (1) has a first electrode (13) and a second electrode (11) arranged in a first direction (D1) that is a stacking direction, and electrolyzes a liquid. The electrolysis unit (1) has a first electrode (13) and a second electrode (11) arranged in the first direction (D1), and electrolyzes a liquid. The elastic body (2) presses the first electrode (13) of the electrolysis unit (1) in the first direction (D1). The electrolysis unit (1) and the elastic body (2) are disposed inside the housing (3). The housing (3) has an inlet through which the liquid supplied to the electrolysis unit (1) flows in, and an outlet through which the electrolytic liquid generated in the electrolysis unit (1) flows out. The housing (3) includes a cover (32) having a plurality of protrusion rows (331) on an inner surface (33) facing the inside. Each of the plurality of protrusion rows (331) includes a plurality of protrusions (332) arranged at intervals in a second direction (D2) intersecting with a first direction (D1). The plurality of protrusion rows (331) are arranged at intervals in a third direction (D3) intersecting with the first direction (D1) and the second direction (D2). The plurality of protrusion rows (331) press the second electrode (11) of the electrolysis unit (1) in the first direction (D1).

[0064] According to the electrolytic liquid generating device (100) of the above aspect, the liquid and the electrolytic liquid are likely to flow in the third direction (D3) inside the housing (3), so that the concentration of the electrolytic liquid is likely to be uniform inside the housing (3). In addition, the concentration of the electrolytic liquid is unlikely to become excessively high near the electrolysis unit (1), so that the electrolytic efficiency is unlikely to decrease. Therefore, the efficiency of generating the electrolytic liquid is improved, and it is possible to generate an electrolytic liquid with a high concentration.

[0065] In the electrolytic liquid generating device (100) according to the second aspect, in the first aspect, the two end rows (331A) located at both ends of the plurality of convex portion rows (331) are both located inside the two end rows (34) of the inner surface (33) in the third direction (D3). A flow path, which is a path through which the liquid passes through the inside of the housing (3), includes a main flow path (61) and a sub-flow path (62) located between the electrolysis unit (1) and the cover (32). In the third direction (D3), the main flow path (61) is located between the two end rows (331A). In the third direction (D3), the sub-flow path (62) is located outside the two end rows (331A). The main flow path (61) and the sub-flow path (62) are in communication with each other.

[0066] In the electrolytic liquid generating device (100) according to the above aspect, mixing of the liquid is likely to occur between the main flow path (61) in which the electrolytic liquid is generated and the sub-flow path (62) in which the liquid flows, so that the concentration of the electrolytic liquid tends to become uniform inside the housing (3). This improves the efficiency of generating the electrolytic liquid, making it possible to generate an electrolytic liquid with a high concentration.

[0067] In the electrolytic liquid generation device (100) according to the third aspect, in the second aspect, both of the two end rows (331A) are arranged at positions overlapping with the first electrode (13) in the third direction (D3).

[0068] According to the electrolytic liquid production device (100) of the above aspect, the force with which the cover (32) presses the second electrode (11) in the first direction (D1) is unlikely to become biased in the third direction (D3). Therefore, the cathode (11) is unlikely to warp in the first direction (D1), and therefore the electrical resistance of the electrolytic unit (1) is unlikely to become biased in the third direction (D3). This improves the efficiency of production of the electrolytic liquid.

[0069] In the electrolytic liquid generation device (100) of the fourth aspect, in the second or third aspect, both of the two end rows (331A) are arranged at positions overlapping with the elastic body (2) in the third direction (D3).

[0070] According to the electrolytic liquid generation device (100) of the above aspect, the force with which the cover (32) and the elastic body (2) press the electrolysis unit (1) in the first direction (D1) is less likely to become biased in the third direction (D3), and thus the cathode (11) is even less likely to warp in the first direction (D1).

[0071] In the electrolytic liquid generation device (100) according to the fifth aspect, in any one of the first to fourth aspects, the second electrode (11) has a plurality of through holes (111) arranged at intervals in the second direction (D2). In the second direction (D2), the widths (d1, d2) of the plurality of convex portions (332) included in each of the plurality of convex portion rows (331) are narrower than or equal to the intervals (d3) between the plurality of through holes (111) in the second electrode (11).

[0072] According to the electrolytic liquid generation device (100) of the above aspect, it is possible to arrange the multiple protrusions (332) so as not to block the through-holes (111) of the second electrode (11). This makes it easier for the electrolytic liquid to move along the third direction (D3), thereby making it possible to reduce any decrease in the efficiency of generation of the electrolytic liquid.

[0073] In the electrolytic liquid generation device (100) according to the sixth aspect, in the fifth aspect, the plurality of convex rows (331) includes three or more convex rows (331). In the second direction (D2), the width (d1) of each of the plurality of convex portions (332B) included in a convex row (331B) other than those at both ends in the third direction (D3) of the plurality of convex rows (331) is greater than the width (d2) of each of the plurality of convex portions (332A) included in a convex row (331A) located at both ends in the third direction (D3) of the plurality of convex rows (331).

[0074] In the electrolytic liquid generation device (100) according to the above aspect, the protrusion row (331B) can press the electrolytic section (1) in the first direction (D1) to prevent the cathode (11) from warping. Moreover, each of the protrusion rows (331A) can reduce the hindrance of the flow of the electrolytic liquid in the third direction (D3), thereby reducing the decrease in the generation efficiency of the electrolytic liquid.

[0075] In the electrolytic liquid generation device (100) according to the seventh aspect, in any one of the first to sixth aspects, at least one of the first electrode (13) and the second electrode (11) is connected to a power supply part (4). The cover (32) further has a protrusion (35) on an inner surface (33) capable of pressing the power supply part (4) in a first direction (D1).

[0076] According to the electrolyte liquid generation apparatus (100) of the above aspect, when assembling the electrolyte liquid generation apparatus (100), the power supply portion (4) can be temporarily held down, thereby improving the assembly efficiency.

[0077] In the electrolytic liquid generation device (100) of the eighth aspect, in the seventh aspect, the height of the protrusion (35) from the inner surface (33) of the cover (32) is different from the height of the multiple convex rows (331) from the inner surface (33) of the cover (32).

[0078] According to the electrolyte liquid generation apparatus (100) of the above aspect, when assembling the electrolyte liquid generation apparatus (100), it is possible to temporarily hold the power supply portion (4) in a suitable position in the first direction (D1), thereby improving assembly efficiency. [Explanation of symbols]

[0079] 100 Electrolyte liquid generation device 1 Electrolytic section 11 Cathode (second electrode) 111 Through hole 13 Anode (first electrode) 2 Elastic body 3. Housing 32 Cover 33 Inside 331, 331A, 331B Convex row 332, 332A, 332B Convex part 4 Power supply unit 61 Main channel 62 Subchannel D1 1st direction D2 2nd direction D3 Third direction d1 Width of the protrusion d2 Width of the protrusion d3 Through hole spacing

Claims

1. an electrolysis unit in which the first electrode and the second electrode are arranged in a first direction that is a lamination direction and which electrolyzes a liquid; an elastic body pressing the first electrode of the electrolysis unit in the first direction; a housing in which the electrolysis unit and the elastic body are disposed, The housing includes: an inlet through which the liquid to be supplied to the electrolysis unit flows; An outlet through which the electrolytic liquid generated in the electrolysis unit flows out, the housing includes a cover having a plurality of rows of protrusions on an inner surface facing the interior; Each of the plurality of convex portion rows includes a plurality of convex portions arranged at intervals in a second direction intersecting the first direction, the plurality of protrusion rows are aligned at intervals in a third direction intersecting the first direction and the second direction, The plurality of protruding portions press the second electrode of the electrolysis unit in the first direction. Electrolyte liquid generation device.

2. In the third direction, two end rows located at both ends of the plurality of convex portion rows are both located inside two ends of the inner surface, a flow path through which the liquid passes through the interior of the housing includes a main flow path and a sub flow path located between the electrolysis unit and the cover, In the third direction, The main flow path is located between the two end rows, The sub-flow passage is located outside the two end rows, The main flow path and the sub flow path are in communication with each other. The electrolytic liquid generating device according to claim 1 .

3. In the third direction, each of the two end rows is disposed at a position overlapping with the first electrode. The electrolytic liquid generating device according to claim 2 .

4. In the third direction, each of the two end rows is disposed at a position overlapping the elastic body. The electrolytic liquid generating device according to claim 3 .

5. the second electrode has a plurality of through holes spaced apart from one another in the second direction; In the second direction, a width of the plurality of protrusions included in each of the plurality of protrusion rows is narrower than or equal to an interval between the plurality of through holes of the second electrode. The electrolytic liquid generating device according to any one of claims 1 to 4.

6. The plurality of protruding portions include three or more protruding portions, In the second direction, a width of each of the plurality of convex portions included in the convex portion rows other than those at both ends in the third direction among the plurality of convex portion rows is larger than a width of each of the plurality of convex portions included in the convex portion rows located at both ends in the third direction among the plurality of convex portion rows. The electrolytic liquid generating device according to claim 5 .

7. At least one of the first electrode and the second electrode is connected to a power supply unit, the cover further includes a protrusion on the inner surface capable of pressing the power supply unit in the first direction. The electrolytic liquid generating device according to any one of claims 1 to 4.

8. a height of the protrusion from the inner surface of the cover is different from a height of the rows of the plurality of protrusions from the inner surface of the cover; 8. The electrolytic liquid generating device according to claim 7.

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