Electrolyte generating device

Abstract

To obtain an electrolytic liquid generation device that can be assembled more easily. [Solution] The electrolytic liquid generating apparatus 1 has a laminate 81 in which conductive films 86 are interposed between adjacent electrodes 84, 85, and comprises an electrolytic unit 80 for electrolytically treating a liquid, and a housing 10 in which the electrolytic unit 80 is arranged. The housing 10 also comprises a case 20 that houses the electrolytic unit 80 and has an opening 332a through which the electrolytic unit 80 can be inserted, and a lid 60 that covers the opening 332a of the case 20. A first connection part 40 that connects to an upstream external flow path 71 is provided protruding in the direction of liquid flow at one end of the case 20 in the direction of liquid flow, and a second connection part 50 that connects to a downstream external flow path 72 is provided protruding in the direction of liquid flow at the other end of the case 20 in the direction of liquid flow.

Description

Technical Field

[0001] The present invention relates to an electrolytic liquid generation device.

Background Art

[0002] Conventionally, as an electrolytic liquid generation device, there is known one having an electrolytic electrode device composed of an anode, a conductive membrane, and a cathode, and generating ozone (an electrolytic product) by the electrolytic electrode device to obtain ozone water (an electrolytic liquid) (see, for example, Patent Document 1).

[0003] In the electrolytic electrode device described in this Patent Document 1, a groove portion composed of a hole formed in the cathode and a hole formed in the conductive membrane is formed, and the water introduced by introducing water into the groove portion is electrolytically treated.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] However, in the above conventional technology, since the electrolytic liquid generation device is formed by supporting the electrolytic electrode device on a support structure formed in the piping, there is a risk that the assembly process of the electrolytic liquid generation device becomes complicated.

[0006] The present invention solves the above conventional problems, and an object thereof is to obtain an electrolytic liquid generation device that can be assembled more easily.

Means for Solving the Problems

[0007] To achieve the above objective, the electrolytic liquid generating apparatus of the present invention comprises an electrolytic unit for electrolytically treating a liquid, having a laminate in which conductive films are interposed between adjacent electrodes, and a housing in which the electrolytic unit is disposed.

[0008] Furthermore, the housing has a flow channel formed in which the direction of liquid flow intersects with the stacking direction of the laminate.

[0009] Furthermore, the flow path has an inlet that is connected to an upstream external flow path and through which liquid supplied to the electrolytic unit flows in, and an outlet that is connected to a downstream external flow path and through which the electrolytic liquid produced in the electrolytic unit flows out.

[0010] Furthermore, the electrolytic section has a groove formed therein that opens into the flow path and exposes at least a portion of the interface between the conductive film and the electrode.

[0011] Furthermore, the housing comprises a case having an opening through which the electrolytic unit can be inserted and which houses the electrolytic unit, and a lid that covers the opening of the case.

[0012] Furthermore, a first connection portion is provided protruding in the direction of fluid flow at one end of the case in the direction of fluid flow, which connects to an upstream external flow path, and a second connection portion is provided protruding in the direction of fluid flow at the other end of the case in the direction of fluid flow, which connects to an downstream external flow path. [Effects of the Invention]

[0013] According to the present invention, an electrolytic liquid generation apparatus that can be assembled more easily can be obtained. [Brief explanation of the drawing]

[0014] [Figure 1] This is a perspective view of an electrolytic water generator according to an embodiment of the present invention, viewed from above. [Figure 2] This is a perspective view of an electrolytic water generator according to an embodiment of the present invention, viewed from below. [Figure 3]It is a plan view showing an electrolyzed water generator according to an embodiment of the present invention. [Figure 4] It is a side view showing an electrolyzed water generator according to an embodiment of the present invention. [Figure 5] It is a rear view showing an electrolyzed water generator according to an embodiment of the present invention. [Figure 6] It is a front view showing an electrolyzed water generator according to an embodiment of the present invention. [Figure 7] It is a sectional view taken along the line A-A of FIG. 3. [Figure 8] It is a sectional view taken along the line B-B of FIG. 4. [Figure 9] It is a sectional view taken along the line C-C of FIG. 4. [Figure 10] It is a sectional view taken along the line D-D of FIG. 5. [Figure 11] It is a sectional view taken along the line E-E of FIG. 5. [Figure 12] It is an exploded perspective view of the electrolyzed water generator according to an embodiment of the present invention viewed from above. [Figure 13] It is an exploded perspective view of the electrolyzed water generator according to an embodiment of the present invention viewed from below. [Figure 14] It is a perspective view of the electrode case of the electrolyzed water generator according to an embodiment of the present invention viewed from one side. [Figure 15] It is a perspective view of the electrode case of the electrolyzed water generator according to an embodiment of the present invention viewed from the other side. [Figure 16] It is a perspective view showing the electrolysis section of the electrolyzed water generator according to an embodiment of the present invention. [Figure 17] It is a perspective view showing a part of the electrolysis section of the electrolyzed water generator according to an embodiment of the present invention in an enlarged manner. [Figure 18] It is a perspective view showing the state where the electrolysis sections of the electrolyzed water generator according to an embodiment of the present invention are laminated in the electrode case. [Figure 19] It is a perspective view showing the state where the electrolysis section of the electrolyzed water generator according to an embodiment of the present invention is housed in the second recess of the electrode case. [Figure 20]This is a schematic side cross-sectional view showing the groove and flow path of an electrolytic water generator according to an embodiment of the present invention. [Figure 21] This is a schematic perspective view showing the relationship between the groove and the projection of the electrolytic water generator according to an embodiment of the present invention. [Figure 22] This is an exploded perspective view showing a first modified example of an electrolytic water generator according to an embodiment of the present invention. [Figure 23] This is an exploded perspective view showing a second modified example of an electrolytic water generator according to an embodiment of the present invention. [Modes for carrying out the invention]

[0015] An electrolytic liquid generating apparatus according to an embodiment of the present invention comprises an electrolytic unit for electrolytically treating a liquid, having a laminate in which conductive films are interposed between adjacent electrodes, and a housing in which the electrolytic unit is disposed.

[0016] Furthermore, the housing has a flow channel formed in which the direction of liquid flow intersects with the stacking direction of the laminate.

[0017] Furthermore, the flow path has an inlet that is connected to an upstream external flow path and through which liquid supplied to the electrolytic unit flows in, and an outlet that is connected to a downstream external flow path and through which the electrolytic liquid produced in the electrolytic unit flows out.

[0018] Furthermore, the electrolytic section has a groove formed therein that opens into the flow path and exposes at least a portion of the interface between the conductive film and the electrode.

[0019] Furthermore, the housing comprises an electrode case having a recess with an opening through which the electrolytic unit can be inserted, and an electrode case lid that covers the opening of the electrode case.

[0020] The electrolytic unit is housed within the recess with the stacking direction of the laminate substantially aligned with the opening direction of the opening.

[0021] This allows the attachment direction of the electrode case lid to the electrode case to roughly coincide with the stacking direction of the laminate, and the electrolytic liquid generation device can be assembled by moving each component relative to the stacking direction. As a result, the electrolytic liquid generation device can be assembled more easily.

[0022] Furthermore, the flow path is formed between the electrolytic unit and the electrode case lid.

[0023] This allows for the formation of a flow channel by covering the opening of the electrode case with the electrode case lid while the electrolytic unit is housed in the recess, making it easier to assemble an electrolytic liquid generation device with a flow channel.

[0024] Furthermore, the electrodes and the conductive film are laminated such that at least the sides extending in the longitudinal direction are substantially the same plane.

[0025] This allows the lamination to be positioned in the channel width direction by making the longitudinally extending sides of each component flush with the surface, thus making it easier to position the lamination in the channel width direction.

[0026] Furthermore, the electrode case is provided with an introduction guide portion that extends in the stacking direction of the laminate and guides the insertion of the electrolytic portion into the recess.

[0027] This method helps to prevent the positional shift of individual components in the laminate from occurring during assembly, making it easier to assemble the electrolytic liquid generator.

[0028] Furthermore, an elastic body is arranged within the housing that is in contact with one side of the laminate in the stacking direction of the electrolytic unit.

[0029] In this way, by pressing one side of the stacking direction of the electrolytic unit with an elastic material, it becomes possible to absorb dimensional variations in the stacking direction of the electrolytic unit with the elastic material, making it easier to position the stacked structure in the stacking direction.

[0030] Furthermore, the elastic body is positioned between the electrolytic unit and the electrode case.

[0031] This makes it possible to place an elastic material inside the electrode case, allowing for easier assembly of the electrolyte liquid generation device.

[0032] Furthermore, a welded portion is formed on the peripheral edge of the opening in the housing, where the electrode case and the electrode case lid are welded together.

[0033] This makes it easier to attach the electrode case lid to the electrode case, thus simplifying the assembly of the electrolytic liquid generation device.

[0034] Furthermore, the electrode comprises an anode and a cathode, and the electrolytic unit comprises an anode-side power supply shaft electrically connected to the anode and applying a voltage to the anode, and a cathode-side power supply shaft electrically connected to the cathode and applying a voltage to the cathode.

[0035] Furthermore, the anode-side power supply shaft and the cathode-side power supply shaft extend in the stacking direction.

[0036] This makes it possible to uniquely determine the size and position of each component that makes up the electrolytic unit, thereby suppressing misalignment of the components during lamination. As a result, the assembly of the electrolytic unit and the alignment of each component become easier, and electrolytic products can be generated more stably.

[0037] Furthermore, the anode-side power supply shaft and the cathode-side power supply shaft extend toward the opposite side of the flow path.

[0038] This prevents the anode-side power supply shaft and the cathode-side power supply shaft from being positioned within the flow path, thereby suppressing stagnation of the liquid flowing through the flow path.

[0039] Furthermore, either the anode-side power supply shaft or the cathode-side power supply shaft is provided on the inlet side of the electrolytic unit, and the other is provided on the outlet side of the electrolytic unit.

[0040] This approach allows for maximizing the distance between the anode-side power supply shaft and the cathode-side power supply shaft while suppressing the need for a larger electrolytic liquid generation device. As a result, it becomes possible to suppress short circuits between the anode and cathode while keeping the electrolytic liquid generation device from becoming too large.

[0041] Furthermore, the electrolytic unit has a substantially rectangular shape when viewed from the stacking direction, with the liquid flow direction being the longitudinal direction, and the anode-side power supply shaft and the cathode-side power supply shaft are provided at diagonal points of the electrolytic unit.

[0042] This eliminates the directional constraints of the electrode case's inlet and outlet sides, allowing for a more efficient assembly of the electrolyte liquid generation device.

[0043] Furthermore, at least one of the anode-side power supply shaft and the cathode-side power supply shaft is provided separately from the electrodes.

[0044] This eliminates the need to weld the anode and cathode power supply shafts. As a result, each component of the electrolytic unit can be processed more easily, leading to cost reductions.

[0045] Furthermore, at least one of the components constituting the electrolytic unit has a shape that is curved in the direction of stacking.

[0046] This design allows for stable pressure to be applied to the electrodes when assembling the electrolytic liquid generation device. As a result, a more stable current-carrying area can be secured, leading to a more stable electrolytic product generation capacity. Furthermore, since the electrolytic unit located within the electrode case does not need to be tightened with screws or other fasteners, assembly variations can be suppressed, further stabilizing the electrolytic product generation capacity. In addition, the number of parts can be reduced, leading to cost savings.

[0047] Furthermore, the groove is formed to have a depth smaller than at least one of the opening width of the groove in the liquid flow direction and the height of the flow path in the stacking direction.

[0048] This prevents the liquid flowing through the channel from accumulating in the grooves, thereby improving the solubility of the electrolytic products in the liquid.

[0049] Furthermore, the flow channels are formed such that the height in the stacking direction is smaller than the width of the flow channel.

[0050] This allows for a faster surface flow velocity at the interface, enabling the more rapid dissolution of the generated electrolytic products and thus improving the concentration of the electrolytic products in the liquid.

[0051] Furthermore, the protrusion is in contact with the surface of the electrolytic unit on the flow path side.

[0052] This allows the protrusions to press against the electrolytic section, thus ensuring more reliable contact between the conductive film and the electrode. As a result, the current density flowing through the electrolytic section can be made more uniform, further improving the efficiency of electrolytic product generation.

[0053] Furthermore, the projection is formed in the center of the flow path in the width direction.

[0054] In this way, by pressing the central part of the electrolytic section with the protrusion, the conductive film and the electrode can be brought into more uniform contact. As a result, the current density of the current flowing through the electrolytic section can be made more uniform, and the efficiency of electrolytic product generation can be further improved.

[0055] Furthermore, multiple protrusions are formed so as to be aligned in the direction of fluid flow.

[0056] In this way, the protrusions press against the electrolytic section along the direction of liquid flow, allowing for more uniform contact between the conductive film and the electrode. As a result, the current density of the current flowing through the electrolytic section can be made more uniform, thereby improving the efficiency of electrolytic product generation.

[0057] Furthermore, the projection is formed such that, when viewed from the stacking direction, at least the contact portion with the electrolytic portion does not overlap with the groove.

[0058] This prevents protrusions from being positioned on the grooves, thereby suppressing obstruction of the liquid flow within the grooves. As a result, the accumulation of air bubbles near the groove interface is suppressed, and the solubility of electrolytic products in the liquid can be further improved.

[0059] Furthermore, multiple grooves are formed so as to be aligned in the direction of liquid flow, and the width of the projection in the direction of liquid flow at least in the contact portion with the electrolytic unit is smaller than the width of the grooves in the direction of liquid flow between adjacent grooves in the electrolytic unit.

[0060] This way, even if the position of the protrusions is slightly misaligned during the assembly of the electrolytic liquid generation device, the protrusions will not be positioned on the grooves.

[0061] Furthermore, the projection is formed such that, when viewed from the stacking direction, its contour shape is a polygonal shape with rounded edges.

[0062] In this way, by forming a rounded (R) portion at the apex of the contour shape of the protrusion, the flow of liquid near the protrusion can be made smoother, which suppresses the accumulation of air bubbles and allows for a further improvement in the solubility of electrolytic products in the liquid.

[0063] Embodiments of the present invention will be described below with reference to the drawings. However, the present invention is not limited to these embodiments.

[0064] Furthermore, the following example illustrates an ozone water generator that produces ozone (an electrolytic product) and dissolves it in water (a liquid) to produce ozonated water (an electrolytic liquid). Ozone water is widely used in water treatment, food, and medical fields because it is effective for sterilization and decomposition of organic matter, and it has the advantages of being non-residual and not producing by-products.

[0065] Furthermore, in the following explanation, the direction of extension of the flow path will be described as the liquid flow direction (front-to-back direction) X, the width direction of the flow path as the width direction (flow path width direction) Y, and the direction in which electrodes and conductive films are stacked as the stacking direction (up-down direction) Z.Then, the up-down direction when the electrolytic liquid generation device is positioned with the electrode case lid on the upper side will be described as the up-down direction Z.

[0066] (Embodiment) The ozone water generator (electrolytic liquid generator) 1 according to this embodiment has a housing 10 with a flow path 11 formed inside, and is configured to be connected to the middle of a pipe 70 that supplies liquid to electrical equipment, liquid reforming equipment, etc. (between the upstream pipe 71 and the downstream pipe 72) (see Figure 7).

[0067] Then, by connecting an ozone water generator (electrolyte liquid generator) 1 in the middle of the piping 70 and connecting the flow path 11 to an external flow path (water channel 71a of the upstream piping 71 and water channel 72a of the downstream piping 72), the ozone water (electrolyzed water: electrolyte liquid) generated in the ozone water generator (electrolyte liquid generator) 1 can be supplied to electrical equipment, liquid reforming equipment, etc.

[0068] Furthermore, the ozone water generator (electrolytic liquid generator) 1 does not need to be connected in the middle of the piping 70. For example, the downstream side of the ozone water generator (electrolytic liquid generator) 1 can be directly connected to electrical equipment or liquid reforming equipment. In this case, the flow path formed inside the electrical equipment or liquid reforming equipment becomes the external flow path on the downstream side.

[0069] Furthermore, inside the housing 10 in which the flow path 11 is formed, the electrolytic unit 80 is positioned facing the flow path 11, so that the water (liquid) flowing in the flow path 11 is electrolytically treated by the electrolytic unit 80.

[0070] In this embodiment, the electrolytic unit 80 is positioned inside the housing 10 such that its upper surface (one side in the stacking direction Z) 80a faces the flow path 11 (see Figure 20).

[0071] As shown in Figures 12 and 13, the electrolytic unit 80 has a laminate 81 in which a conductive film 86 is interposed between the anode (electrode) 84 and the cathode (electrode) 85 (between adjacent electrodes).

[0072] On the other hand, the flow path 11 is formed in the housing 10 such that the direction of liquid flow X intersects with the stacking direction Z of the laminate 81.

[0073] This flow path 11 has an inlet 11a into which liquid supplied to the electrolysis unit 80 flows, which is connected to the water channel (upstream external flow path) 71a of the upstream piping 71, and an outlet 11b into which ozonated water (electrolyte liquid) produced in the electrolysis unit 80 flows out, which is connected to the water channel (downstream external flow path) 72a of the downstream piping 72.

[0074] Furthermore, the laminate 81 has grooves 82 that open to the flow channel 11 and expose at least a portion of the interfaces 87 and 88 between the conductive film 86 and the electrodes (anode 84 and cathode 85) (see Figure 20).

[0075] In this embodiment, by forming such grooves 82 in the laminate 81, water (liquid) supplied into the flow path 11 from the inlet 11a can be introduced into the grooves 82.

[0076] Then, power supplied from the power supply unit 100 is used to perform an electrochemical reaction on the water (liquid) mainly introduced into the groove 82, thereby generating ozonated water (electrolyzed water: electrolytic liquid) in which ozone (electrolytic product) is dissolved.

[0077] Thus, the ozone water generator (electrolyte liquid generator) 1 according to this embodiment produces ozone water (electrolyte water: electrolyte liquid) in which ozone (electrolytic product) is dissolved by subjecting water (liquid) to an electrolytic treatment that causes an electrochemical reaction.

[0078] The ozonated water (electrolyzed water: electrolyzed liquid) generated in the ozonated water generator (electrolyzed liquid generator) 1 is discharged from the outlet 11b via the flow path 11 to the outside of the ozonated water generator (electrolyzed liquid generator) 1 (into the water channel 72a of the downstream piping 72).

[0079] The housing 10 can be formed using, for example, a non-conductive resin such as acrylic, and comprises an electrode case 20 in which an electrolytic unit 80 is housed, with a recess 34 having an opening 332a through which the electrolytic unit 80 can be inserted, and an electrode case lid 60 that covers the opening 332a of the electrode case 20 (see Figures 12 and 13).

[0080] As shown in Figures 14 and 15, the electrode case 20 includes a roughly hollow box-shaped main body 30 in which the electrolytic unit 80 is arranged. On one side (upstream side) of the main body 30 in the longitudinal direction (liquid flow direction: front-to-back direction X), a roughly cylindrical first connection part (upstream connection part) 40 is formed, which is connected to the upstream piping 71. On the other side (downstream side) of the main body 30 in the longitudinal direction (liquid flow direction: front-to-back direction X), a roughly cylindrical second connection part (downstream connection part) 50 is formed, which is connected to the downstream piping 72.

[0081] Furthermore, the first connection section (upstream connection section) 40 has a first connecting channel (upstream channel) 12 that communicates with the channel 71a of the upstream pipe 71 when the first connection section (upstream connection section) 40 is connected to the upstream pipe 71 (see Figure 7). In this embodiment, this first connecting channel (upstream channel) 12 constitutes a part of the channel 11, and the upstream end of the first connecting channel (upstream channel) 12 is the inlet 11a. Also, a tapered section 40a is formed at the upstream end of the first connection section (upstream connection section) 40, which widens as it goes upstream. Thus, in this embodiment, the inlet 11a is formed to be wider than the downstream channel of the first connecting channel (upstream channel) 12.

[0082] On the other hand, the second connection section (downstream connection section) 50 has a second connecting channel (downstream channel) 16 that communicates with the water channel 72a of the downstream pipe 72 when the second connection section (downstream connection section) 50 is connected to the downstream pipe 72 (see Figure 7). In this embodiment, this second connecting channel (downstream channel) 16 also constitutes part of the channel 11, and the downstream end of the second connecting channel (downstream channel) 16 is the outlet 11b. In addition, a tapered section 50a that widens towards the downstream side is also formed at the downstream end of the second connection section (downstream connection section) 50. Thus, in this embodiment, the outlet 11b is also formed to be wider than the upstream channel of the second connecting channel (downstream channel) 16.

[0083] Furthermore, in this embodiment, the first connection portion (upstream connection portion) 40 and the second connection portion (downstream connection portion) 50 are formed such that their respective upper ends (ends on the electrode case lid 60 side) 41 and 51 protrude above the main body portion 30. By making each of the upper ends 41 and 51 protrude above the main body portion 30 in this way, when the electrode case lid 60 is attached to the electrode case 20, the electrode case lid 60 is held between the upper ends 41 and 51.

[0084] As shown in Figures 14 and 15, the main body 30 comprises a bottom wall portion 31, a peripheral wall portion 32 connected to the periphery of the bottom wall portion 31, and a top wall portion 33 connected to the upper end of the peripheral wall portion 32. The top wall portion 33 has a through hole 332 that penetrates in the vertical direction Z.

[0085] Furthermore, a recess 34 is formed inside the main body portion 30, defined by the inner surface 311 of the bottom wall portion 31, the inner surface 321a in the width direction and the inner surface 321b in the longitudinal direction of the peripheral wall portion 32, and the inner surface 331 of the top wall portion 33. Thus, in this embodiment, the recess 34 is formed to open upward. Therefore, the opening 332a formed in the top wall portion 33 is the opening of the recess 34.

[0086] The electrolytic unit 80 is then inserted into the recess 34 from the side of the opening 332a, thereby housing the electrolytic unit 80 within the recess 34. The opening 332a is formed to be larger than the contour shape of the electrolytic unit 80 as viewed from the stacking direction Z, so that the electrolytic unit 80, with its stacking direction aligned with the vertical direction Z, can be inserted into the recess 34 in its original orientation.

[0087] Furthermore, in this embodiment, stepped portions 35 are formed at both ends of the main body portion 30 in the longitudinal direction (liquid flow direction: front-to-back direction X) inside the main body portion 30.

[0088] This stepped portion 35 is formed integrally with the bottom wall portion 31 and the peripheral wall portion 32, and is located between the inner surface 311 of the bottom wall portion 31 and the opening 332a in the vertical direction Z. It has an intermediate surface 351 that extends horizontally and a stepped surface 352 that extends vertically and connects the intermediate surface 351 and the inner surface 311 of the bottom wall portion 31.

[0089] Furthermore, by forming such a stepped portion 35, the recess 34 becomes a two-tiered recess structure.

[0090] Specifically, the recess 34 has a first recess (space for planned flow path formation) 341 formed on the opening side, in which a part of the flow path 11 is formed, and a second recess (space for accommodating electrolytic unit) 342 formed further back (below) than the first recess (space for planned flow path formation) 341, in which the electrolytic unit 80 is accommodated.

[0091] Furthermore, the second recess (electrolytic unit housing space) 342 has a main body housing recess 342a in which the main body 80b of the electrolytic unit 80 is housed, and a power supply unit housing space 342b which is connected to one side in the width direction Y at both ends of the main body housing recess 342a in the longitudinal direction (liquid flow direction: front-to-back direction X), and in which the power supply unit 80c of the electrolytic unit 80, which will be described later, is housed.

[0092] In other words, the stepped surface 352 of the stepped portion 35 has an inner stepped surface 352a located on the inside in the longitudinal direction (liquid flow direction: front-to-back direction X), an outer stepped surface 252b located on the outside in the longitudinal direction (liquid flow direction: front-to-back direction X), and a connecting stepped surface 352c that connects the inner stepped surface 352a and the outer stepped surface 252b. The intermediate surface 351 is formed such that, when viewed from the vertical direction Z, the inner boundary line in the longitudinal direction (liquid flow direction: front-to-back direction X) is bent in a crank shape.

[0093] Thus, in this embodiment, the first recess (space intended to form a flow path) 341 is defined by the inner surface 331 of the top wall portion 33, the upper part of the inner surface 321a on the width direction side and the inner surface 321b on the longitudinal direction side of the peripheral wall portion 32, and the intermediate surface 351 of the stepped portion 35.

[0094] Furthermore, the second recess (electrolytic unit housing space) 342 is defined by the inner surface 311 of the bottom wall portion 31, the stepped surface 352 of the stepped portion 35, and the lower part of the inner surface 321a in the width direction.

[0095] As described above, the electrolytic unit 80 is housed within this second recess (electrolytic unit housing space) 342. At this time, the electrolytic unit 80 is housed with its stacking direction aligned with the vertical direction Z.

[0096] Furthermore, in this embodiment, the electrolytic unit 80 is housed in the second recess (electrolytic unit housing space) 342 via an elastic body 90. That is, the electrolytic unit 80 is housed in the second recess (electrolytic unit housing space) 342 with the elastic body 90 interposed between the electrolytic unit 80 and the electrode case 20, and with the elastic body 90 in contact with the lower surface 80d of the electrolytic unit 80. This elastic body 90 can be formed using, for example, an elastic material such as rubber, plastic, or a metal spring.

[0097] Furthermore, in this embodiment, when the electrode case lid 60 is attached to the electrode case 20, the electrolytic section side flow path 14 is formed on the upper surface (one side in the stacking direction Z) 80a and on the intermediate surface 351 of the electrolytic section 80. Thus, in this embodiment, the flow path 11 is formed between the electrolytic section 80 and the electrode case lid 60.

[0098] Furthermore, in this embodiment, upwardly projecting guide protrusions (introduction guide portions) 353 are formed on both sides in the width direction Y of the inner boundary portion in the longitudinal direction (liquid flow direction: front-to-back direction X) of the intermediate surface 351 of the stepped portion 35. That is, guide protrusions (introduction guide portions) 353 are provided at the four corners of the second recess (electrolytic unit housing space) 342 to guide the insertion of the electrolytic unit 80 into the second recess (electrolytic unit housing space) 342.

[0099] Furthermore, a first main body side channel 13 is formed on the peripheral wall 32 on one side (upstream side) in the longitudinal direction (liquid flow direction: front-to-back direction X), which communicates with the first connecting channel (upstream channel) 12. And, a second main body side channel 15 is formed on the peripheral wall 32 on the other side (downstream side) in the longitudinal direction (liquid flow direction: front-to-back direction X), which communicates with the second connecting channel (downstream channel) 16.

[0100] As described above, in this embodiment, the flow path 11 is formed by a first connecting flow path (upstream flow path) 12, a first main body side flow path 13, an electrolytic unit side flow path 14, a second main body side flow path 15, and a second connecting flow path (downstream flow path) 16 (see Figure 7). At this time, the flow path 11 is formed such that its cross-sectional area is substantially the same, except for the portion where the inlet 11a is formed and the portion where the outlet 11b is formed.

[0101] Furthermore, as shown in Figures 6 and 8, the channel 11 is formed in a rectangular shape that is wider in the width direction Y. That is, the channel 11 is formed such that the height H1 in the stacking direction Z is smaller than the channel width W1. In this embodiment, the channel 11 is formed such that the channel width W1 is approximately 10 mm and the height H1 in the stacking direction Z is approximately 2 mm. In this way, for example, when water (liquid) is supplied into the channel 11 at a flow rate of 2 L / min, the flow velocity of the water (liquid) flowing in the channel is approximately 1.67 m / s.

[0102] Furthermore, in this embodiment, a power supply unit housing space 342b located on one side (upstream side) in the longitudinal direction (liquid flow direction: front-to-back direction X) is formed on one side in the width direction Y, and a power supply unit housing space 342b located on the other side (downstream side) in the longitudinal direction (liquid flow direction: front-to-back direction X) is formed on the other side in the width direction Y. In other words, a pair of power supply unit housing spaces 342b are formed at diagonal portions of the main body housing recess 342a.

[0103] Therefore, in this embodiment, the recess 34 is formed to be point-symmetric with respect to the center of the main body 30 when viewed from the vertical direction Z.

[0104] In this embodiment, the housing 10 itself (electrode case 20 and electrode case lid 60) is also formed to be point-symmetric with respect to the center of the housing 10 when viewed from the vertical direction Z.

[0105] The electrode case lid 60 comprises a roughly rectangular plate-shaped lid body 61 and a fitting projection 62 that protrudes downward from the lower center of the lid body 61 and fits into the opening 332a of the electrode case 20.

[0106] Furthermore, a welding projection 63 that protrudes downward is formed around the entire circumference of the fitting projection 62 on the lid body 61. When attaching the electrode case lid 60 to the electrode case 20, this welding projection 62 is inserted into a groove 333a formed around the entire circumference of the peripheral edge 333 of the opening 332a in the top wall portion 33 of the electrode case 20.

[0107] Then, with the fitting projection 62 fitted into the opening 332a and the welding projection 62 inserted into the groove 333a, the electrode case lid 60 and the electrode case 20 are welded together by vibration welding, heat welding, or the like, so that the recess 34 of the electrode case 20 is sealed by the electrode case lid 60. At this time, a welded portion 17 is formed in the area between the welding projection 62 and the groove 333a.

[0108] Furthermore, it is also possible to ensure that the recess 34 of the electrode case 20 is sealed by the electrode case lid 60 by screwing the electrode case lid 60 to the electrode case 20 with a sealing material in between the electrode case lid 60 and the electrode case 20.

[0109] Furthermore, at both ends of the lower surface 62a of the fitting projection 62, extension walls 62b are formed that extend in the longitudinal direction (liquid flow direction: front-to-back direction X). When the electrode case lid 60 is attached to the electrode case 20, these extension walls 62b define both ends of the electrolytic unit side flow path 14 in the width direction Y.

[0110] Furthermore, in this embodiment, the extension wall 62b is formed to be positioned inward in the longitudinal direction (liquid flow direction: front-to-back direction X) from the guide projections (introduction guide sections) 353 provided at the four corners of the second recess (electrolytic unit housing space) 342. The extension wall 62b is formed to overlap with the guide projections (introduction guide sections) 353 when viewed from the longitudinal direction (liquid flow direction: front-to-back direction X).

[0111] In this embodiment, by providing such an extended wall 62b, it is possible to suppress the occurrence of turbulence in the vicinity of the guide projection (introduction guide section) 353.

[0112] Furthermore, a plurality of projections 64 are formed in the center of the width direction Y on the lower surface 62a of the fitting projection 62, aligned along the longitudinal direction (fluid flow direction: front-to-back direction X).

[0113] The electrolytic unit 80 is housed in the second recess (electrolytic unit housing space) 342 via the elastic body 90, and when the electrode case lid 60 is attached to the electrode case 20, the electrolytic unit 80 is pressed downward by the projection 64 provided on the electrode case lid 60.

[0114] Thus, in this embodiment, by pressing the electrolytic unit 80 downward, a constant pressure is applied to the entire electrolytic unit 80 by the elastic body 90, thereby further improving the adhesion between the various components constituting the electrolytic unit 80.

[0115] Furthermore, when the electrode case lid 60 is attached to the electrode case 20, the upper surface 80a of the electrolytic unit 80 (one side in the stacking direction Z) is made to be approximately flush with the intermediate surface 351. This prevents the formation of steps in the flow path 11. In addition, the cross-sectional area of ​​the flow path formed on the upper part of the electrolytic unit 80 (electrolytic unit side flow path 14) is made to be approximately the same as the cross-sectional area of ​​the other flow paths.

[0116] In this way, by making the cross-sectional area of ​​the channel 11 nearly the same, it is possible to suppress turbulence in the flow of water (liquid) within the channel 11. As a result, the formation of stagnant areas within the channel 11 is suppressed, preventing the generated ozone (electrolytic product) from growing into bubbles, and thus the concentration of ozone (electrolytic product) in the ozonated water (electrolytic liquid) discharged from the outlet 11b can be further improved.

[0117] Next, we will describe the specific configuration of the electrolytic unit 80.

[0118] As shown in Figures 16 and 17, the electrolytic unit 80 has a substantially rectangular shape, with the liquid flow direction X being the longitudinal direction when viewed from the stacking direction Z. The electrolytic unit 80 comprises a laminate 81 formed by stacking an anode 84, a conductive film 86, and a cathode 85 in that order. Thus, in this embodiment, the laminate 81 is stacked such that the conductive film 86 is interposed between adjacent electrodes (anode 84 and cathode 85). In this embodiment, for example, a power supply 83 made of titanium is stacked below the anode 84, and electricity is supplied to the anode 84 via this power supply 83.

[0119] Furthermore, in this embodiment, the laminate 81 has a groove 82 having an opening 82a that opens into the flow channel 11, and this groove 82 is configured so that at least a portion of the interface 88 between the conductive film 86 and the cathode 85 can come into contact with water (liquid). Also, at least a portion of the interface 87 between the conductive film 86 and the anode 84 can come into contact with water (liquid).

[0120] Specifically, the cathode 85 has a cathode-side hole 85c, and the conductive film 86 has a conductive film-side hole 86c. When the cathode 85 and the conductive film 86 are stacked, the cathode-side hole 85c and the conductive film-side hole 86c are made to communicate with each other.

[0121] Therefore, the inner surface 86d of the conductive film 86 and the inner surface 85d of the cathode 85 become the side surface 82c of the groove 82, and the upper surface (surface) 84a of the anode 84 becomes the bottom surface 82b of the groove 82 (see Figure 20). By forming such a groove 82, at least a portion of the interface 88 between the conductive film 86 and the cathode 85 (the interface between the conductive film and the electrode) is exposed to the groove 82, allowing water to freely come into contact with the interface 87 exposed to the groove 82. In addition, at least a portion of the interface 87 between the conductive film 86 and the anode 84 (the interface between the conductive film and the electrode) is also exposed to the groove 82, allowing water to freely come into contact with the interface 87 exposed to the groove 82.

[0122] In this embodiment, the groove portion 82 is formed such that the groove portion, which extends elongatedly in the width direction Y, has both ends in the width direction Y bent upstream. That is, the cathode side hole 85c formed in the cathode 84 and penetrating in the stacking direction Z is formed in a V-shape with the bending point located downstream.

[0123] Furthermore, the conductive film side holes 86c formed in the conductive film 86 and penetrating in the stacking direction Z are also formed in a V-shape with the bending point portion positioned downstream, and the cathode side holes 85c and the conductive film side holes 86c are connected to form a V-shaped groove 82.

[0124] Furthermore, the shape of the groove 82 is not limited to the V-shape described above, but can be various shapes. For example, it can be a long, narrow rectangle in the width direction Y.

[0125] Furthermore, although this embodiment illustrates a configuration in which multiple grooves 82 are arranged along the longitudinal direction X, it is sufficient to have at least one groove 82.

[0126] In this embodiment, the interface 88 between the conductive film 86 and the cathode 85 is the boundary line between the side surface of the cathode 85 and the side surface of the conductive film 86. Furthermore, the interface 87 between the conductive film 86 and the anode 84 is the intersection line between the surface of the anode 84 and the side surface of the conductive film 86.

[0127] Furthermore, the conductive film 86 and the cathode 85 may be the same size or different in size, but at least their respective pores (cathode-side pores 85c and conductive film-side pores 86c) must be in communication with each other, and a sufficient electrical contact area must be ensured. Considering these factors, it is preferable that the conductive film 86 and the cathode 85 have approximately the same projected dimensions (they are approximately the same size when viewed from the stacking direction Z).

[0128] Furthermore, the anode 84 may be the same size as the conductive film 86 and the cathode 85, or it may be different in size, but it is preferable that it be large enough to be visible from all the grooves 82 when viewed from the stacking direction Z.

[0129] In this embodiment, the anode 84, cathode 85, and conductive film 86 are made to have approximately the same projected dimensions.

[0130] This ensures that when the laminate 81 is formed, the sides of the anode 84, cathode 85, and conductive film 86 are substantially on the same plane.

[0131] In other words, when the laminate 81 is formed, the sides 84b, 85b, and 86b of the anode 84, cathode 85, and conductive film 86 that extend in at least in the longitudinal direction are made substantially the same plane.

[0132] Furthermore, in this embodiment, the power supply body 83 and the elastic body 90 are also made to have approximately the same projected dimensions as the anode 84, cathode 85, and conductive film 86.

[0133] The electrolytic unit 80 receives ions from the conductive film 86 and current from the power supply unit 100 to perform an electrolytic treatment that electrochemically generates ozone at the interface 87 between the anode 84 and the conductive film 86.

[0134] This electrochemical reaction is as follows:

[0135] Anode side: 3H2O → O3 + 6H + +6e- 2H₂O → O₂ + 4H + +4e- Cathode side: 2H + +2e- → H2 The power supply body 83 can be formed using, for example, titanium, and is configured to contact the anode 84 on the side opposite to the conductive film 86. A shaft mounting piece 83a is formed at one end of the power supply body 83, and the anode-side power supply shaft 83b is attached to this shaft mounting piece 83a by welding or the like. In this way, the anode-side power supply section 80c is formed by attaching the anode-side power supply shaft 83b to the shaft mounting piece 83a.

[0136] The power supply unit 83 is electrically connected to the power supply unit 100 via the conductor 102a on the anode side, which is connected to the anode-side power supply shaft 83b.

[0137] In this embodiment, the anode-side power supply shaft 83b is attached to the shaft mounting piece 83a so as to extend in the stacking direction Z. The power supply body 83 is inserted into the second recess (electrolytic unit housing space) 342 with the anode-side power supply shaft 83b extending toward the opposite side (downward) from the flow path 11. At this time, a pair of power supply insertion holes 313a are formed in the bottom wall portion 31 of the electrode case 20 so as to communicate with each power supply unit housing space 342b through which the shaft of the power supply unit 80c is inserted, and the anode-side power supply shaft 83b is inserted through one of the power supply insertion holes 313a. A conductor 102a is connected to the portion of the anode-side power supply shaft 83b that is exposed to the outside of the electrode case 20.

[0138] The anode 84 can be formed, for example, by depositing a conductive diamond film on a conductive substrate approximately 10 mm wide and 50 mm long, which is formed using silicon. This conductive diamond film has boron-doped conductivity. The conductive diamond film is formed on the conductive substrate with a thickness of approximately 3 μm by plasma CVD.

[0139] In this embodiment, the anode 84 and cathode 85 are plate-shaped, but the anode 84 and cathode 85 may also be film-shaped, mesh-shaped, or linear.

[0140] The conductive film 86 is placed on the anode 84 on which the conductive diamond film is formed. This conductive film 86 is a proton-conductive ion exchange film and has a thickness of approximately 100 to 200 μm. As shown in Figures 12 and 13, the conductive film 86 has multiple conductive film side holes 86c that penetrate in the thickness direction (Z direction).

[0141] In this embodiment, each conductive film side pore 86c is provided with the same shape. Furthermore, multiple conductive film side pores 86c are arranged in a line along the longitudinal direction X. Note that the shape and arrangement of the conductive film side pores 86c may be in a different form.

[0142] The cathode 85 is placed on a conductive film 86. The cathode 86 is made of, for example, a stainless steel electrode plate with a thickness of about 0.5 mm. As shown in Figures 12 and 13, the cathode 85 has multiple cathode side holes 85c that penetrate in the thickness direction.

[0143] The cathode side holes 85c have the same or similar opening shape as the conductive film side holes 86c. Furthermore, the cathode side holes 85c are arranged in rows with the same pitch and in the same direction as the conductive film side holes 86c.

[0144] Furthermore, a shaft mounting piece 85e is formed at one end of the cathode 85, and the cathode-side power supply shaft 85f is attached to this shaft mounting piece 85e by welding or the like. In this way, by attaching the cathode-side power supply shaft 85f to the shaft mounting piece 85e, the cathode-side power supply section 80c is formed.

[0145] The cathode 85 is electrically connected to the power supply unit 100 via the conductor 101a on the cathode 101 side, which is connected to the cathode-side power supply shaft 85f.

[0146] In this embodiment, the cathode-side power supply shaft 85f is also attached to the shaft mounting piece 85e so as to extend in the stacking direction Z. The cathode 85 is inserted into the second recess (electrolytic unit housing space) 342 with the cathode-side power supply shaft 85f extending toward the opposite side (downward) from the flow path 11. At this time, the cathode-side power supply shaft 85f is inserted through the other power supply unit insertion hole 313a, and the conductor 101a is connected to the portion of the cathode-side power supply shaft 85f that is exposed to the outside of the electrode case 20.

[0147] In this embodiment, as described above, a pair of power supply unit housing spaces 342b are formed in the diagonal portions of the main body housing recess 342a.

[0148] Therefore, in this embodiment, the anode-side power supply shaft 83b and the cathode-side power supply shaft 85f are provided on the diagonal portions 80e of the electrolytic unit 80.

[0149] Furthermore, in this embodiment, the anode-side power supply shaft 83b, which is one of the anode-side power supply shaft 83b and the cathode-side power supply shaft 85f, is provided on the inlet 11a side of the electrolytic unit 80. The other, the cathode-side power supply shaft 85f, is provided on the outlet 11b side of the electrolytic unit 80.

[0150] Furthermore, the electrolytic unit 80 is positioned within the recess 34 with the direction in which the multiple grooves 82 are arranged substantially aligned with the front-to-back direction X.

[0151] The power supply unit 100 generates a potential difference between the anode 84 and the cathode 85 via a conductive film 86. The anode 84 is electrically connected to the anode 102 side of the power supply unit 100 via a conductor 102a, and the cathode 85 is electrically connected to the cathode 101 side of the power supply unit 100 via a conductor 101a (see Figure 4). The power supply unit 100 can be electrically connected to a control unit (not shown) via wiring (not shown), and by connecting to the control unit, the power supply unit 100 can be switched on and off, and its output can be changed.

[0152] In this embodiment, the groove 82 is formed such that its depth D1 is smaller than at least one of the opening width L1 in the liquid flow direction X of the groove 82 and the height H1 in the stacking direction Z of the flow path 11 (see Figures 8 and 20).

[0153] In other words, the groove 82 is formed such that the height H1 of the flow path 11 in the stacking direction Z > the depth D1 of the groove 82, or the opening width L1 of the groove 82 in the liquid flow direction X > the depth D1 of the groove 82.

[0154] In this embodiment, the height H1 of the flow path 11 in the stacking direction Z is set to approximately 2 mm, as described above.

[0155] Furthermore, the depth D1 of the groove 82 is the sum of the thickness of the conductive film 86 and the thickness of the cathode 85, and in this embodiment, it is approximately 0.6 mm to approximately 0.7 mm.

[0156] Furthermore, the opening width L1 of the groove 82 in the fluid flow direction X is approximately 1.5 mm.

[0157] Thus, in this embodiment, the groove 82 is formed such that the height H1 of the flow path 11 in the stacking direction Z > the depth D1 of the groove 82, and the opening width L1 of the groove 82 in the liquid flow direction X > the depth D1 of the groove 82.

[0158] Furthermore, in this embodiment, the projection 64 is configured to contact only the upper surface (one side in the stacking direction Z) 80a of the electrolytic unit 80. In other words, when viewed from the stacking direction Z, at least the contact portion 64a of the projection 64 that contacts the electrolytic unit 80 does not overlap with the groove 82.

[0159] Specifically, as shown in Figure 21, the liquid flow width L2 at least the contact portion 64a of the projection 64 with the electrolytic unit 80 is made smaller than the liquid flow width L3 between adjacent grooves 82 in the electrolytic unit 80, so that the projection 64 contacts only the upper surface (one side in the stacking direction Z) 80a of the electrolytic unit 80.

[0160] In this embodiment, the liquid flow width L2 at the contact portion 64a of the projection 64 with the electrolytic portion 80 is approximately 1.5 mm.

[0161] Furthermore, the liquid flow width L3 between adjacent grooves 82 in the electrolytic section 80 is approximately 2.0 mm.

[0162] In this embodiment, the projection 64 is formed such that the fluid flow width at all points from the tip (lower end) to the base (upper end) of the projection 64 is smaller than the fluid flow width L3 between the grooves 82.

[0163] Furthermore, in this embodiment, the upper surface (one side in the stacking direction Z) 80a of the electrolytic unit 80 is located so as to surround the entire circumference of the contact portion 64a of the projection 64 with the electrolytic unit 80. This ensures that even if the projection 64 is displaced in any direction on the XY plane, the entire surface of the contact portion 64a of the projection 64 with the electrolytic unit 80 can be brought into contact with the upper surface (one side in the stacking direction Z) 80a of the electrolytic unit 80.

[0164] Furthermore, in this embodiment, the projection 64 is formed such that, when viewed from the stacking direction Z, the contour shape 64b is a quadrilateral shape (polygon shape) with R-shaped portions 64d formed at the vertex portions 64c.

[0165] An ozone water generator (electrolyte liquid generator) 1 with such a configuration can be assembled, for example, by the method shown below.

[0166] First, the elastic body 90 is inserted into the recess 34 from the opening 332a side of the electrode case 20, and the elastic body 90 is positioned in the second recess (electrolytic unit housing space) 342.

[0167] Next, with the tip of the anode-side power supply shaft 83b pointing downwards, the power supply body 83 is inserted into the recess 34 from the opening 332a side of the electrode case 20, while the anode-side power supply shaft 83b is inserted through one of the power supply insertion holes 313a, thereby stacking the main body portion of the power supply body 83 on the elastic body 90.

[0168] Next, the anode 84 is inserted into the recess 34 from the opening 332a side of the electrode case 20, and the anode 84 is stacked on the power supply body 83.

[0169] Next, the conductive film 86 is inserted into the recess 34 from the opening 332a side of the electrode case 20, and the conductive film 86 is laminated on the anode 84.

[0170] Next, with the cathode 85 positioned so that the tip of the cathode-side power supply shaft 85f faces downward, the cathode 85 is inserted into the recess 34 from the opening 332a side of the electrode case 20, while the cathode-side power supply shaft 85f is inserted into the other power supply insertion hole 313a, thereby laminating the main body portion of the cathode 85 onto the conductive film 86.

[0171] At this time, each component constituting the elastic body 90 and the electrolytic unit 80 is inserted into the second recess (electrolytic unit housing space) 342 while being guided by the guide projection (introduction guide portion) 353.

[0172] However, if the components constituting the elastic body 90 and the electrolytic unit 80 are simply stacked within the recess 34, the elastic body 90 remains in a nearly free state (a state with almost no elastic deformation).

[0173] Therefore, at least the cathode 85 of the electrolytic section 80 is floating above the intermediate surface 351 (see Figure 18). However, the relative movement of the cathode 85 floating above the intermediate surface 351 in the longitudinal direction X is suppressed by the guide projection (introduction guide section) 353. In this embodiment, each component constituting the elastic body 90 and the electrolytic section 80 is positioned in the width direction Y by the inner surface 321a on the width direction side.

[0174] Subsequently, by moving the electrode case lid 60 relative to the electrode case 20 in the stacking direction Z, the fitting projection 62 is fitted into the opening 332a, and the welding projection 62 is inserted into the groove 333a.

[0175] Then, with the fitting projection 62 fitted into the opening 332a and the welding projection 62 inserted into the groove 333a, the electrode case lid 60 and the electrode case 20 are welded together by vibration welding, heat welding, or the like.

[0176] In this way, the recess 34 of the electrode case 20 is sealed by the electrode case lid 60.

[0177] At this time, the upper surface (one side in the stacking direction Z) 80a of the electrolytic unit 80 is pressed downward by the extended wall 62b and the projection 64, so that the electrolytic unit 80 is inserted into the second recess (electrolytic unit housing space) 342 as the elastic body 90 is elastically deformed (see Figure 19).

[0178] Next, the O-ring 314 is inserted from the tip of the shaft of the power supply unit 80a (anode-side power supply shaft 83b and cathode-side power supply shaft 85f) that is exposed to the outside of the tip electrode case 20, and placed in the O-ring insertion groove 313b formed in the retaining plate housing recess 313.

[0179] Then, the tips of the shafts of the power supply unit 80a (anode-side power supply shaft 83b and cathode-side power supply shaft 85f) are inserted into the shaft insertion holes 316a formed in the retaining plate 316, and the retaining plate 316 is housed in the retaining plate housing recess 313.

[0180] Then, the retaining plate 316 is fixed to the electrode case 20 by inserting screws 315 into the screw insertion holes 316b formed in the retaining plate 316 and the screw holes 313c formed in the retaining plate housing recess 313 and fastening them with screws.

[0181] In this way, the ozone water generator (electrolyte liquid generator) 1 is assembled. Thus, the ozone water generator (electrolyte liquid generator) 1 according to this embodiment can be assembled simply by moving each component relative to the electrode case 20 in the stacking direction Z.

[0182] In the above embodiment, the anode-side power supply shaft 83b and the cathode-side power supply shaft 85f are shown as examples of being welded to the shaft mounting pieces 83a and 85e, but a configuration as shown in Figure 22 is also possible.

[0183] In Figure 22, the anode-side power supply shaft 83b is provided separately from the power supply unit 83 (anode 84), and the cathode-side power supply shaft 85f is provided separately from the cathode 85.

[0184] When assembling the ozone water generator (electrolyte liquid generator) 1, each shaft is made to contact the power supply unit 83 and the cathode 85.

[0185] Although Figure 22 shows an example where both the anode-side power supply shaft 83b and the cathode-side power supply shaft 85f are separate components, it is also possible to have only one of the anode-side power supply shaft 83b or the cathode-side power supply shaft 85f as a separate component.

[0186] Furthermore, as shown in Figure 23, it is also possible to have at least one of the components constituting the electrolytic unit 80 be curved in the stacking direction Z.

[0187] Figure 23 illustrates an example in which the power supply 83 and cathode 85, which are components of the electrolytic unit 80 and are located at both ends in the stacking direction Z, are curved in the stacking direction Z. Although not shown in Figure 23, the cathode 85 has a cathode side hole that communicates with the conductive film side hole 86c.

[0188] Furthermore, when assembling the ozone water generator (electrolyte liquid generator) 1 using these curved members, the curved members are made to be almost flat like a plate.

[0189] This ensures that when the ozone water generator (electrolyte liquid generator) 1 is assembled, a pressing pressure is generated against the conductive film 86.

[0190] In other words, in Figure 23, the power supply 83 and cathode 85 are given a curved shape in the stacking direction Z, thereby providing the power supply 83 and cathode 85 with the function of the elastic body 90 shown in the above embodiment.

[0191] In this way, by making the shapes of the power supply body 83 and the cathode 85 curved in the stacking direction Z, and by making the power supply body 83 and the cathode 85 press against the conductive film 86, as shown in Figure 23, the adhesion between each component constituting the electrolytic unit 80 can be further improved even when the ozone water generator (electrolytic liquid generator) 1 is assembled without using the elastic body 90.

[0192] Although Figure 23 illustrates an example of an ozone water generator (electrolytic liquid generator) 1 assembled without using the elastic body 90, it is also possible to arrange the power supply body 83 and cathode 85 in a curved shape in the stacking direction Z, while placing the elastic body 90 below the power supply body 83.

[0193] Furthermore, the curved shape of the components constituting the electrolytic unit 80 can be any shape as long as it generates pressing pressure against the conductive film 86 when the ozone water generator (electrolytic liquid generator) 1 is assembled. For example, in Figure 23, it is curved in a direction perpendicular to the longitudinal direction X (liquid flow direction) (lamination direction Z) and is curved so as to be convex toward the conductive film 86 side, but it may also be curved so as to be convex toward the opposite side from the conductive film 86 side. It may also be a shape that is curved in multiple places, such as a wave shape.

[0194] Furthermore, it is possible to bend only one of the power supply body 83 and the cathode 85, or to bend other components that make up the electrolytic unit 80. In other words, as long as the ozone water generator (electrolytic liquid generator) 1 is assembled in a way that creates pressing pressure on the conductive film 86, any component of the components that make up the electrolytic unit 80 can be made into a curved shape.

[0195] Next, we will explain the operation and function of the ozone water generator (electrolytic liquid generator) 1 with the above configuration.

[0196] First, in order to supply water (liquid) to the ozone water generator (electrolyte liquid generator) 1, water (liquid) is supplied from the inlet 11a to the flow path 11.

[0197] Then, some of the water supplied to the flow path 11 flows into the groove 82 and comes into contact with the interfaces 87 and 88 of the groove 82.

[0198] In this state (with the electrolytic unit 80 immersed in water by the supplied water), when the power supply unit 100 is turned on and a voltage is applied between the anode 84 and cathode 85 of the electrolytic unit 80 by the power supply unit 100, a potential difference is generated between the anode 84 and cathode 85 via the conductive film 86. By generating a potential difference between the anode 84 and cathode 85 in this way, the anode 84, conductive film 86 and cathode 85 are energized, electrolytic treatment is performed in the water in the groove 82, and ozone (electrolytic product) is generated near the interfaces 87 and 88 between the conductive film 86 and the anode 84.

[0199] The voltage applied at this time is several volts to tens of volts, and the higher the voltage (the higher the current value), the greater the amount of ozone (electrolytic product) generated.

[0200] Then, the ozone (electrolytic product) generated near the interfaces 87 and 88 between the conductive film 86 and the anode 84 is carried downstream along the flow of water (liquid) to the downstream side of the channel 11 and dissolves in the water (liquid). In this way, dissolved ozonated water (ozonated water: electrolytic liquid) is produced by dissolving ozone (electrolytic product) in water (liquid).

[0201] Such an ozone water generator (electrolyte liquid generator) 1 can be applied to electrical equipment that utilizes the electrolyte liquid produced by the electrolyte liquid generator, or to liquid modification equipment equipped with the electrolyte liquid generator.

[0202] Examples of electrical equipment and liquid modification devices include water treatment equipment such as water purifiers, washing machines, dishwashers, heated toilet seats, refrigerators, hot water supply systems, sterilization equipment, medical equipment, air conditioning equipment, and kitchen equipment.

[0203] As described above, the ozone water generator (electrolytic liquid generator) 1 according to this embodiment has a laminate 81 in which conductive films 86 are interposed between adjacent electrodes 84 and 85, and comprises an electrolytic unit 80 for electrolytically treating water (liquid) and a housing 10 in which the electrolytic unit 80 is arranged.

[0204] Furthermore, the housing 10 has a flow channel 11 formed in which the liquid flow direction X intersects with the stacking direction Z of the laminate 81.

[0205] This flow path 11 has an inlet 11a into which liquid supplied to the electrolysis unit 80 flows, which is connected to the water channel (upstream external flow path) 71a of the upstream piping 71, and an outlet 11b into which ozonated water (electrolyte liquid) produced in the electrolysis unit 80 flows out, which is connected to the water channel (downstream external flow path) 72a of the downstream piping 72.

[0206] Furthermore, the electrolytic section 80 has a groove 82 that opens to the flow path 11 and exposes at least a portion of the interfaces 87 and 88 between the conductive film 86 and the electrodes 84 and 85.

[0207] Furthermore, the housing 10 includes an electrode case 20 in which a recess 34 is formed having an opening 332a through which the electrolytic unit 80 can be inserted, and the electrolytic unit 80 is housed in the recess 34, and an electrode case lid 60 that covers the opening 332a of the electrode case 20.

[0208] The electrolytic unit 80 is housed within the recess 34 with the stacking direction Z of the laminate 81 substantially aligned with the opening direction of the opening 332a.

[0209] This makes it possible to make the mounting direction of the electrode case lid 60 to the electrode case 20 substantially coincide with the stacking direction Z of the laminate 81. As a result, the ozone water generator (electrolyte liquid generator) 1 can be assembled by moving each component constituting the electrolytic unit 80 and the electrode case lid 60 relative to the electrode case 20 in the stacking direction Z. Thus, according to this embodiment, an ozone water generator (electrolyte liquid generator) 1 that can be assembled more easily can be obtained.

[0210] Furthermore, in this embodiment, the flow path 11 is formed between the electrolytic unit 80 and the electrode case lid 60.

[0211] This allows the flow path 11 to be formed by covering the opening 332a of the electrode case 20 with the electrode case lid 60 while the electrolytic unit 80 is housed in the recess 34. Therefore, it becomes easier to assemble the ozone water generator (electrolytic liquid generator) 1 having the flow path 11.

[0212] Incidentally, in the electrolytic liquid generation apparatus disclosed in Patent Document 1 mentioned above, an electrolytic electrode device is formed by simply stacking an anode, a conductive film, and a cathode. Therefore, when stacking the anode, conductive film, and cathode, there is a risk that the positional relationship of each component may shift in a direction intersecting the stacking direction Z (on the XY plane).

[0213] Furthermore, when stacking the anode, conductive film, and cathode, if the relative positions of each component shift in a direction intersecting the stacking direction Z (on the XY plane), the contact area between the anode, conductive film, and cathode may increase or decrease, potentially causing the concentration of ozone (electrolytic product) in the ozonated water (electrolyte) to become unstable.

[0214] In particular, if each component shifts in the Y direction of the flow path width, the amount of surface exposure of the interface within the groove will fluctuate significantly, which may lead to a more unstable concentration of ozone (electrolytic product) in the ozonated water (electrolyte).

[0215] Therefore, in this embodiment, the electrodes 84, 85 and the conductive film 86 are laminated such that at least the longitudinally extending side surfaces 84b, 85b, and 86b are substantially the same plane.

[0216] In this way, the positioning of the laminated body 81 in the flow path width direction Y can be performed simply by making the longitudinally extending side surfaces 84b, 85b, and 86b of each component flush, thus making the positioning of the laminated body 81 in the flow path width direction Y easier.

[0217] Furthermore, by suppressing the positional displacement in the Y direction of the flow path width, which has a significant impact on the ozone (electrolytic product) generation capacity, the concentration of ozone (electrolytic product) in ozonated water (electrolyte) can be made more stable.

[0218] Furthermore, the electrode case 20 is provided with an introduction guide portion 353 that extends in the stacking direction Z of the laminate 81 and guides the insertion of the electrolytic portion 80 into the recess 34.

[0219] As described above, by providing the introduction guide section 353, when assembling the ozone water generator (electrolyte liquid generator) 1, the displacement of the individual components constituting the laminate 81 during assembly is suppressed, making it easier to assemble the ozone water generator (electrolyte liquid generator) 1.

[0220] Furthermore, in the electrolytic liquid generation apparatus disclosed in Patent Document 1, as described above, the electrolytic electrode device is formed by simply stacking the anode, conductive film, and cathode, which may result in gaps forming between the stacked components. If gaps form between the components, the current flow across the stacked surface of the laminate may become uneven. If the current flow across the stacked surface of the laminate becomes uneven in this way, the efficiency of ozone (electrolytic product) generation may decrease, and the lifespan of the electrodes and conductive film may be shortened.

[0221] Therefore, in this embodiment, an elastic body 90 is placed inside the housing 10 that is in contact with one side of the laminate 81 in the stacking direction Z of the electrolytic unit 80.

[0222] In this way, by providing the elastic body 90, one side of the electrolytic unit 80 in the stacking direction Z can be pressed by the elastic body 90, and dimensional variations in the stacking direction Z of the electrolytic unit 80 can be absorbed by this elastic body 90. As a result, positioning of the electrolytic unit 80 in the stacking direction Z becomes easier.

[0223] Furthermore, by providing the elastic body 90, a constant pressure can be applied to the entire electrolytic section 80, thereby improving the adhesion between each component. By improving the adhesion between each component in this way, the efficiency of ozone (electrolytic product) generation can be further improved, and the lifespan of the electrodes and conductive film can be extended.

[0224] Furthermore, by using the elastic body 90 to improve the adhesion between each component, it becomes possible to simplify the structure and more easily assemble the electrolytic unit 80 with improved adhesion between each component.

[0225] In this embodiment, an elastic body 90 is placed between the electrolytic unit 80 and the electrode case 20.

[0226] This allows the elastic body 90 to be placed inside the electrode case 20 (in the recess 34) when assembling the ozone water generator (electrolyte liquid generator) 1, making it easier to assemble the ozone water generator (electrolyte liquid generator) 1.

[0227] Furthermore, a welded portion 17 is formed at the peripheral edge 333 of the opening 332a in the housing 10, where the electrode case 20 and the electrode case lid 60 are welded together.

[0228] This makes it possible to easily attach the electrode case lid 60 to the electrode case 20, and thus makes it easier to assemble the ozone water generator (electrolytic liquid generator) 1.

[0229] Furthermore, in this embodiment, the electrodes include an anode 84 and a cathode 85. In addition, the electrolytic unit 80 includes an anode-side power supply shaft 83b that is electrically connected to the anode 84 and applies a voltage to the anode 84, and a cathode-side power supply shaft 85f that is electrically connected to the cathode 85 and applies a voltage to the cathode 85.

[0230] Furthermore, the anode-side power supply shaft 83b and the cathode-side power supply shaft 85f extend in the stacking direction Z.

[0231] This makes it possible to uniquely determine the size and position of each component that makes up the electrolytic unit 80, thereby suppressing misalignment of the components during lamination. As a result, the assembly of the electrolytic unit 80 and the alignment of each component can be made easier, and ozone (electrolytic product) can be generated more stably.

[0232] Furthermore, in this embodiment, the anode-side power supply shaft 83b and the cathode-side power supply shaft 85f are extended toward the opposite side from the flow path 11.

[0233] By doing so, the anode-side power supply shaft 83b and the cathode-side power supply shaft 85f are not positioned within the flow path 11, thereby preventing the water (liquid) flowing within the flow path 11 from accumulating.

[0234] In this embodiment, the anode-side power supply shaft 83b, which is one of the anode-side power supply shaft 83b and the cathode-side power supply shaft 85f, is provided on the inlet 11a side of the electrolytic unit 80. The other, the cathode-side power supply shaft 85f, is provided on the outlet 11b side of the electrolytic unit 80.

[0235] This allows the ozone water generator (electrolyte liquid generator) 1 to remain large while maximizing the distance between the anode-side power supply shaft 83b and the cathode-side power supply shaft 85f. As a result, it becomes possible to prevent the ozone water generator (electrolyte liquid generator) 1 from becoming large while also preventing a short circuit between the anode 84 and the cathode 85.

[0236] Furthermore, the electrolytic unit 80 has a roughly rectangular shape, with the liquid flow direction X being the longitudinal direction when viewed from the stacking direction Z, and the anode-side power supply shaft 83b and the cathode-side power supply shaft 85f are provided at the diagonal portions 80b of the electrolytic unit 80.

[0237] This eliminates the directionality of the inlet and outlet sides of the electrode case 20, allowing for more efficient assembly of the ozone water generator (electrolyte liquid generator) 1.

[0238] In this case, it is possible to provide at least one of the anode-side power supply shaft 83b and the cathode-side power supply shaft 85f separately from the electrodes 84 and 85.

[0239] This eliminates the need to weld the anode-side power supply shaft 83b and the cathode-side power supply shaft 85f. As a result, each component constituting the electrolytic unit 80 can be processed more easily, making it possible to reduce costs.

[0240] Furthermore, it is also possible to make at least one of the components constituting the electrolytic unit 80 (the power supply 83 and the cathode 85) curved in the stacking direction Z.

[0241] This allows for stable pressure to be applied to electrodes 84 and 85 when assembling the ozone water generator (electrolyte liquid generator) 1. As a result, the current-carrying area of ​​the electrolytic unit 80 can be secured more stably, and the ozone (electrolytic product) generation capacity can be made more stable. In addition, since it is no longer necessary to fasten the electrolytic unit 80 located inside the electrode case 20 with screws or the like, assembly variations can be suppressed, and the ozone (electrolytic product) generation capacity can be made more stable. Furthermore, the number of parts can be reduced, which makes it possible to reduce costs.

[0242] Furthermore, Patent Document 1 discloses an electrolytic liquid generation apparatus equipped with a baffle structure for creating turbulence in the tap water passing through the electrolytic electrode device. By providing such a baffle structure, the tap water is electrolyzed more efficiently.

[0243] However, simply generating turbulence is not enough to obtain sufficient hydraulic force to forcibly detach the microbubbles of the electrolytic products from the electrode interface. As a result, the generated electrolytic products may not detach from the electrode interface and may grow into large bubbles.

[0244] Thus, if the bubbles of the electrolytic product grow large, even if they detach from the electrode interface, they may not dissolve in the liquid and may float in the liquid, potentially reducing the solubility of the electrolytic product in the liquid.

[0245] Therefore, in this embodiment, the groove 82 is formed such that its depth D1 is smaller than at least one of the opening width L1 in the liquid flow direction X of the groove 82 and the height H1 in the stacking direction Z of the flow path 11.

[0246] Thus, if the height H1 of the flow path 11 in the stacking direction Z > the depth D1 of the groove 82, or the opening width L1 of the groove 82 in the liquid flow direction X > the depth D1 of the groove 82, the water flow in the area where ozone (electrolytic products) is generated (near the interface 87) becomes faster, making it possible to strip off the generated ozone (electrolytic products) in the form of ultrafine bubbles. As a result, the ozone (electrolytic products) that floats in the liquid without dissolving in it is suppressed, and the dissolved concentration of ozone (electrolytic products) in the water (liquid) can be further improved.

[0247] Furthermore, since it becomes possible to suppress the accumulation of water (liquid) flowing in the channel 11 within the groove 82, the dissolved concentration of ozone (electrolytic product) in the water (liquid) can be further improved from this perspective as well.

[0248] Furthermore, Patent Document 1 discloses an electrolytic liquid generation device in which an anode, a conductive film, and a cathode are stacked, and water passages are provided in the conductive film and the cathode, with a single water passage (flow channel). This configuration aims to miniaturize and reduce the cost of the electrolytic liquid generation device.

[0249] However, Patent Document 1 does not specify anything regarding the height of the flow path. Therefore, depending on the configuration of the flow path, the flow velocity of the liquid flowing through the path may become significantly slower. Thus, with the structure of Patent Document 1, there is a risk that the solubility of the electrolytic products in the liquid will decrease.

[0250] Therefore, in this embodiment, the flow channel 11 is formed such that the height H1 in the stacking direction Z is smaller than the flow channel width W1.

[0251] Thus, by forming the channel 11 such that the height H1 in the stacking direction Z is smaller than the channel width W1, the surface flow velocity near interfaces 87 and 88 can be increased. As a result, the generated ozone (electrolytic product) can be dissolved in water (liquid) more quickly, and the dissolved concentration of ozone (electrolytic product) in water (liquid) can be increased.

[0252] Furthermore, in the structure of Patent Document 1, as described above, the anode, conductive film, and cathode are simply stacked on top of each other, which may result in uneven contact between the anode and the conductive film, and between the conductive film and the cathode.

[0253] Thus, if the contact between the anode and the conductive film, and between the conductive film and the cathode, becomes uneven, the dissolution concentration of the electrolytic product becomes unstable, which may reduce the efficiency of electrolytic product generation.

[0254] Therefore, in this embodiment, the projection 64 is made to come into contact with the surface 80a of the electrolytic unit 80 on the flow path 11 side.

[0255] By bringing such protrusions 64 into contact with the surface 80a of the electrolytic unit 80 on the channel 11 side, the electrolytic unit 80 can be pressed by the protrusions 64, thereby making the contact between the conductive film 86 and the electrodes 84 and 85 more uniform. As a result, the current density of the current flowing through the electrolytic unit 80 can be made more uniform, and the efficiency of ozone (electrolytic product) generation can be further improved. In addition, the dissolved concentration of ozone (electrolytic product) in water (liquid) can be made more stable.

[0256] Furthermore, in this embodiment, a projection 64 is formed in the center of the flow path 11 in the flow path width direction Y.

[0257] In this way, by pressing the central part of the electrolytic unit 80 with the projection 64, the conductive film 86 and the electrodes 84 and 85 can be brought into more uniform contact. As a result, the current density of the current flowing through the electrolytic unit 80 can be made more uniform, and the efficiency of ozone (electrolytic product) generation can be further improved. In addition, the dissolved concentration of ozone (electrolytic product) in water (liquid) can be made more stable.

[0258] Furthermore, in this embodiment, multiple protrusions 64 are formed so as to be aligned in the direction of fluid flow X.

[0259] In this way, by causing the projection 64 to press against the electrolytic unit 80 along the liquid flow direction X, the conductive film 86 and the electrodes 84 and 85 can be brought into more uniform contact. As a result, the current density of the current flowing through the electrolytic unit 80 can be made more uniform, thereby improving the efficiency of ozone (electrolytic product) generation. In addition, the dissolved concentration of ozone (electrolytic product) in water (liquid) can be made more stable.

[0260] Furthermore, in this embodiment, the projection 64 is formed such that, when viewed from the stacking direction Z, at least the contact portion 64a with the electrolytic portion 80 does not overlap with the groove portion 82.

[0261] This prevents the protrusions 64 from being positioned on the grooves 82, thereby suppressing obstruction of the water (liquid) flow within the grooves 82 by the protrusions 64. As a result, the accumulation of air bubbles near the interfaces 87 and 88 of the grooves 82 is suppressed, and the solubility of ozone (electrolytic products) in the water (liquid) can be further improved.

[0262] Furthermore, in this embodiment, multiple grooves 82 are formed so as to be aligned in the liquid flow direction X. The liquid flow direction width L2 at least the contact portion 64a of the projection 64 with the electrolytic unit 80 is made smaller than the liquid flow direction width L3 between adjacent grooves 82 in the electrolytic unit 80.

[0263] This ensures that even if the position of the protrusion 64 is slightly misaligned during the assembly of the ozone water generator (electrolyte liquid generator) 1, the protrusion 64 will not be positioned on the groove 82. As a result, the accumulation of air bubbles near the interfaces 87 and 88 of the groove 82 can be more reliably suppressed, and the solubility of ozone (electrolytic product) in water (liquid) can be further improved.

[0264] Furthermore, in this embodiment, when viewed from the stacking direction Z, the protrusions 64 are formed such that the contour shape 64b becomes a polygonal shape with R-shaped portions 64d formed at the vertex portions 64c.

[0265] In this way, by forming an R-shaped portion 64d at the apex portion 64c of the contour shape 64b of the projection 64, the flow of liquid near the projection 64 can be made smoother, thereby more reliably suppressing the accumulation of air bubbles and improving the dissolved concentration of ozone (electrolytic product) in water (liquid).

[0266] Although preferred embodiments of the present invention have been described above, the present invention is not limited to the above embodiments and various modifications are possible.

[0267] For example, the above embodiment illustrates an ozone water generator that generates ozone and dissolves the ozone in water to produce ozonated water. However, the substance to be produced is not limited to ozone; for example, hypochlorous acid may be produced and used for sterilization or water treatment. It is also possible to have a device that produces oxygenated water, hydrogen water, chlorine-containing water, hydrogen peroxide water, etc.

[0268] In addition, the anode 84 can be made of, for example, conductive silicon, conductive diamond, titanium, platinum, lead oxide, tantalum oxide, etc., and any material can be used as long as it is an electrode having conductivity and durability capable of generating electrolyzed water. Also, when the anode 84 is a diamond electrode, the manufacturing method thereof is not limited to the manufacturing method by film formation. Further, it is also possible to configure the substrate using a material other than metal.

[0269] In addition, the cathode 85 may be an electrode having conductivity and durability, and can be made of, for example, platinum, titanium, stainless steel, conductive silicon, etc.

[0270] Also, the housing, the electrolysis section, and other detailed specifications (shape, size, layout, etc.) can be appropriately changed.

Industrial Applicability

[0271] As described above, the electrolyzed liquid generating device according to the present invention can increase the concentration of electrolyzed products in the electrolyzed liquid, and thus can be applied to, for example, water treatment equipment such as a water purification device, a washing machine, a dishwasher, a warm water washing toilet seat, a refrigerator, a hot water supply device, a sterilization device, a medical device, an air conditioning device, or a kitchen device.

Explanation of Signs

[0272] 1 Ozone water generating device (electrolyzed liquid generating device) 10 Housing (electrode case 20 and electrode case lid 60) 11 Flow path 11a Inlet 11b Outlet 17 Welded part 20 Electrode case 34 Concave part 60 Electrode case lid 71a Water path (external flow path) 72a Downstream water path (external flow path) 80 Electrolysis section 80a Surface 80e Diagonal part 81 Laminate 82 Groove 82a aperture 83b Anode-side power supply shaft 84 Anode (electrode) 85 Cathode (electrode) 85f cathode-side power supply shaft 86 Conductive film 87 Interface between anode 84 and conductive film 86 88 Interface between cathode 85 and conductive film 86 90 Elastic body 332a opening 333 Peripheral area 353 Introduction Guide Section D1 Depth of groove H1 Height in the stacking direction of the flow channel L1 Opening width in the fluid flow direction of the groove L2 Width in the liquid flow direction at the contact portion of the projection L3 Width of liquid flow direction between grooves in the electrolytic section W1 channel width X Flow direction (longitudinal direction: front-to-back direction) Y width direction (flow channel width direction) Z stacking direction (vertical direction)

Claims

1. The device has a laminate in which conductive films are interposed between adjacent electrodes, and an electrolytic unit for electrolytically treating a liquid, The housing in which the electrolytic unit is arranged, Equipped with, The housing has a flow channel formed in which the direction of liquid flow intersects the stacking direction of the laminate. The aforementioned flow path has an inlet that communicates with an upstream external flow path and through which liquid supplied to the electrolytic unit flows in, and an outlet that communicates with a downstream external flow path and through which the electrolytic liquid generated in the electrolytic unit flows out. The electrolytic section has a groove formed therein that opens into the flow path and exposes at least a portion of the interface between the conductive film and the electrode. The housing comprises a case having an opening through which the electrolytic unit can be inserted and which houses the electrolytic unit, and a lid that covers the opening of the case. An electrolytic liquid generating apparatus characterized in that a first connection portion is provided protruding in the direction of liquid flow at one end of the case in the direction of liquid flow, which connects to an upstream external flow path, and a second connection portion is provided protruding in the direction of liquid flow at the other end of the case in the direction of liquid flow, which connects to a downstream external flow path.

2. The electrolytic liquid generating apparatus according to claim 1, characterized in that the first connecting portion and the second connecting portion are provided such that their respective central axes are located in the same straight line.

3. The electrolytic liquid generating apparatus according to claim 1 or 2, characterized in that the first connection portion and the second connection portion are provided such that their respective central axes are located within the flow path when viewed from the direction of liquid flow.

4. The electrolytic liquid generating apparatus according to any one of claims 1 to 3, characterized in that the first connecting portion and the second connecting portion are provided such that their respective upper ends are located above the upper end of the case.

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