JP6937475B2 - Electrolytic liquid generator - Google Patents

Description

The present disclosure relates to an electrolytic liquid generator.

Conventionally, as an electrolytic liquid generator, it has an electrolytic part formed by laminating an anode, a conductive film, and a cathode, and the electrolytic part generates ozone (electrolytic product) to generate ozone water (electrolytic liquid). Is known (see, for example, Patent Document 1).

The electrolytic portion described in Patent Document 1 has a groove portion in which a hole formed in a cathode as an electrode and a hole formed in a conductive film are communicated with each other. Then, by applying a voltage to the electrolytic portion, the water introduced into the groove portion is electrolyzed to generate ozone.

Japanese Unexamined Patent Publication No. 2017-176993

In the above-mentioned conventional technique, the holes formed in the cathode and the holes formed in the conductive film have the same shape. That is, the holes formed in the cathode and the holes formed in the conductive film are formed so that the contour shapes and sizes in a plan view are the same. Then, the groove portion is formed by laminating the cathode and the conductive film so as to overlap the contour lines of the holes.

However, in the above-mentioned conventional technique, when the cathode is displaced relative to the conductive film in the direction intersecting the stacking direction, the electrolytic area (contact area) between the cathode and the conductive film changes. The current density of the current flowing through the circuit changes and the efficiency of ozone production fluctuates.

Therefore, an object of the present disclosure is to obtain an electrolytic liquid generating apparatus capable of further stabilizing the production efficiency of an electrolytic product.

The electrolytic liquid generator of the present disclosure has a laminated body in which a conductive film is interposed between electrodes adjacent to each other, and an electrolytic portion for electrolytically treating a liquid and the electrolytic portion are arranged inside. It has a housing and. Further, the housing has an inflow port into which the liquid supplied to the electrolytic part flows in and an outflow port into which the electrolytic liquid generated in the electrolytic part flows out, and the liquid passing direction is the said. A flow path is formed that intersects the stacking direction of the laminated body. Further, the electrolytic portion is formed with a groove portion that opens into the flow path and exposes at least a part of the interface between the conductive film and the electrode. Further, the groove portion includes a conductive film side groove portion formed on the conductive film and an electrode side groove portion formed on the electrode and communicating with the conductive film side groove portion. The shape of the conductive film-side gutter and the shape of the electrode-side gutter are different when viewed along the stacking direction of the laminate.

According to the present disclosure, it is possible to obtain an electrolytic liquid generator capable of further stabilizing the production efficiency of the electrolytic product.

It is a perspective view which shows the electrolyzed water generator which concerns on one Embodiment by disassembling. It is sectional drawing which cut in the plane orthogonal to the liquid passage direction of the electrolyzed water generator which concerns on one Embodiment. It is sectional drawing which enlarges and shows the part where the conductive film side groove part of the electrolytic part which concerns on one Embodiment was formed. It is a partially enlarged plan view which shows the state in which the conductive film which concerns on one Embodiment is laminated on the anode. It is a partially enlarged plan view which shows the state in which the cathode which concerns on one Embodiment is laminated on the conductive film. FIG. 4 is a plan view showing a further enlarged view of FIG. FIG. 5 is a plan view showing a further enlarged view of FIG. It is a figure which shows the state which the conductive film is displaced relative to the cathode in the liquid passage direction, and is the top view which corresponds to FIG. 7. It is a figure which shows the state which the conductive film is displaced relative to the cathode in the width direction, and is the top view which corresponds to FIG. 7.

Hereinafter, embodiments of the present disclosure will be described with reference to the drawings. The present disclosure is not limited by this embodiment.

In the following, as an electrolytic liquid generator, an ozone water generator that generates ozone (electrolyzed product) and dissolves the ozone in water (liquid) to generate ozone water (electrolyzed water: electrolytic liquid) will be illustrated. .. Since ozone water is effective for sterilization and decomposition of organic substances, it is widely used in the fields of water treatment, foods, and medicine, and has the advantages of having no persistence and not producing by-products. ..

Further, in the following, the extending direction of the flow path is the liquid passing direction (the direction in which the liquid flows) X, the width direction of the flow path is the width direction (the direction crossing the liquid passing direction) Y, and the electrodes and the conductive film are laminated. The direction will be described as the stacking direction Z. In the present embodiment, the stacking direction Z is the stacking direction Z in the vertical direction when the electrolytic liquid generator is arranged so that the electrode case lid is on the upper side.

As shown in FIGS. 1 and 2, the ozone water generator 1 according to the present embodiment has a housing 10, and a flow path 11 is formed inside the housing 10.

Further, inside the housing 10 in which the flow path 11 is formed, the electrolytic unit 50 is arranged so as to face the flow path 11. Then, the water flowing in the flow path 11 is electrolyzed by the electrolyzing unit 50. In the present embodiment, as shown in FIGS. 2 and 3, the electrolytic unit 50 is arranged in the housing 10 so that the upper surface (one side surface of the stacking direction Z) 50a faces the flow path 11.

As shown in FIGS. 1 and 2, the electrolytic unit 50 is laminated so that the conductive film 56 is interposed between the anode (electrode) 54 and the cathode (electrode) 55, that is, between the electrodes adjacent to each other. It has the laminated body 51.

On the other hand, the flow path 11 includes an inflow port 111 into which the liquid supplied to the electrolysis unit 50 flows in, and an outflow port 112 in which the ozone water generated by the electrolysis unit 50 flows out, and the liquid passage direction X is set. The housing 10 is formed so as to intersect the stacking direction Z of the laminated body 51.

Further, the laminated body 51 is formed with a plurality of groove portions 52 that are open to the flow path 11 and that expose at least a part of the interfaces 57 and 58 between the conductive film 56 and the electrodes (anode 54 and cathode 55). (See FIG. 3). It is sufficient that at least one groove portion 52 is formed in the laminated body 51.

In the present embodiment, by forming such a groove portion 52 in the laminated body 51, water supplied from the inflow port 111 into the flow path 11 can be introduced into the groove portion 52. Then, by subjecting the water introduced into the groove 52 to an electrolytic treatment that causes an electrochemical reaction, ozone water in which ozone 70 as an electrolytic product is dissolved is generated.

The housing 10 can be formed using, for example, a non-conductive resin such as PPS. In the present embodiment, the housing 10 includes an electrode case 20 which is opened upward and has a recess 23 in which the electrolytic portion 50 is housed, and an electrode case lid 40 which covers the opening of the electrode case 20.

As shown in FIG. 1, the electrode case 20 includes a bottom wall portion 21 and a peripheral wall portion 22 connected to the peripheral edge of the bottom wall portion 21, and has a substantially box shape that opens upward. There is. That is, the electrode case 20 is formed with a recess 23 that is defined by the inner surface 21a of the bottom wall portion 21 and the inner surface 22a of the peripheral wall portion 22 and opens upward.

Then, the electrolytic portion 50 is introduced into the recess 23 from the opening side (upper side) so that the electrolytic portion 50 is housed in the recess 23. The opening of the recess 23 is formed so as to be larger than the contour shape of the electrolytic portion 50 viewed along the stacking direction Z, and the electrolytic portion 50 whose stacking direction is aligned with the vertical direction Z is in the same posture. It can be inserted into the recess 23 with.

Further, in the present embodiment, the electrolytic unit 50 is housed in the recess 23 via the elastic body 60. That is, the electrolytic unit 50 is housed in the recess 23 with the elastic body 60 interposed between the electrolytic unit 50 and the electrode case 20 and the elastic body 60 in contact with the lower surface 50b of the electrolytic unit 50. Has been done. The elastic body 60 can be formed by using an elastic material such as rubber, plastic, or a metal spring.

Further, in the present embodiment, when the electrode case lid 40 is attached to the electrode case 20, the flow path 11 is formed between the electrolytic unit 50 and the electrode case lid 40. The flow path 11 is preferably formed so that the cross-sectional area (the area of the flow path 11 when cut on a plane orthogonal to the liquid flow direction X) at the portion facing the electrolytic portion 50 is substantially the same.

The electrode case lid 40 includes a substantially rectangular plate-shaped lid main body 41, and a protruding portion 42 that protrudes downward from the lower center of the lid main body 41 and is inserted into the recess 23 of the electrode case 20. ing.

Further, a fitting recess 411 for welding is formed on the peripheral edge of the protrusion 42 in the lid body 41 over the entire circumference. When the electrode case lid 40 is attached to the electrode case 20, the welding fitting protrusion 241 formed around the entire circumference of the opening of the electrode case 20 is inserted into the fitting recess 411. (See Fig. 2).

In the present embodiment, a flange portion 24 extending substantially horizontally toward the outside is continuously provided at the upper end of the peripheral wall portion 22 of the electrode case 20 over the entire circumference, and is fitted into the flange portion 24 so as to project upward. The collision portion 241 is formed so as to surround the opening of the electrode case 20. Then, the electrode case lid 40 and the electrode case 20 are welded in a state where the fitting protrusion 241 is inserted into the fitting recess 411 while the protrusion 42 is inserted into the recess 23.

It is also possible to attach the electrode case lid 40 to the electrode case 20 by screwing the electrode case lid 40 to the electrode case 20 with a sealing material interposed between the electrode case lid 40 and the electrode case 20. Is.

Further, protrusions 421 that press the electrolytic portion 50 downward are formed at both ends and the center of the protrusion 42 on the lower surface side in the width direction Y. Specifically, when the electrolytic portion 50 is housed in the recess 23 via the elastic body 60 and the electrode case lid 40 is attached to the electrode case 20, the electrolytic portion 421 is provided by the protrusion 421 provided on the electrode case lid 40. The 50 is pressed downward.

As described above, in the present embodiment, by pressing the electrolytic portion 50 downward, a constant pressure is applied to the entire electrolytic portion 50 by the elastic body 60, and the adhesion of each member constituting the electrolytic portion 50 is adhered. Is being made higher.

In the present embodiment, the elastic body 60 is formed with a plurality of through holes 61 penetrating in the stacking direction Z along the longitudinal direction (liquid passing direction X), and when pressed by the electrolytic unit 50, the elastic body 60 is formed. The elastic body 60 can be deformed to the through hole 61 side as well. By deforming the elastic body 60 to the through hole 61 side in this way, the compression of the electrode case 20 by the elastic body 60 pressed by the electrolytic unit 50 is suppressed.

Further, in the present embodiment, a groove 412 is provided on the upper surface of the lid main body 41 so that the groove 412 can be used for positioning, catching, preventing reverse insertion, etc. when fixing the ozone water generator 1. There is. If such a groove 412 is provided, the ozone water generator 1 can be more easily incorporated into a device that needs to generate ozone 70 without making a mistake.

As described above, the ozone water generator 1 can be used in a state of being incorporated in other equipment or equipment. When incorporating the ozone water generator 1 into other equipment or equipment, it is preferable to arrange the ozone water generator 1 in an upright position so that the inflow port 111 is on the bottom and the outflow port 112 is on the top. If the ozone water generator 1 is arranged so that the inflow port is on the bottom and the outflow port is on the top, the ozone generated at the electrode interface can be quickly separated from the electrode interface by buoyancy. That is, ozone generated at the electrode interface can be quickly separated from the electrode interface before bubbles grow. As a result, ozone is easily dissolved in water, and the efficiency of ozone water generation is improved. The arrangement state of the ozone water generation device 1 is not limited to this, and an appropriate arrangement is possible.

Next, a specific configuration of the electrolytic unit 50 will be described.

The electrolytic unit 50 has a substantially rectangular shape in which the liquid passing direction X is the longitudinal direction in a plan view (state viewed from the stacking direction Z). The electrolytic unit 50 includes a laminated body 51 formed by laminating the anode 54, the conductive film 56, and the cathode 55 in this order. As described above, in the present embodiment, the laminated body 51 is laminated so that the conductive film 56 is interposed between the anode 54 and the cathode 55, which are electrodes adjacent to each other.

Further, a feeding body 53 is laminated on the lower side of the anode 54, and electricity is supplied to the anode 54 via the feeding body 53.

In the present embodiment, the feeding body 53, the anode 54, the conductive film 56, and the cathode 55 all have a rectangular planar shape with the liquid passing direction X as the longitudinal direction and the width direction Y as the lateral direction. , It has a flat plate shape having a thickness in the stacking direction Z. The anode 54 and the cathode 55 may be film-like, mesh-like, or linear.

The feeding body 53 can be formed of titanium, for example, and is in contact with the anode 54 on the opposite side of the conductive film 56. Further, a power feeding shaft 53b for the anode is electrically connected to one end of the power feeding body 53 in the longitudinal direction (upstream side in the liquid passing direction X) via a spiral spring portion 53a. The power feeding shaft 53b is inserted into a through hole 211 formed on one end side of the bottom wall portion 21 in the liquid passing direction X. The portion of the power feeding shaft 53b that protrudes to the outside of the electrode case 20 is electrically connected to the positive electrode of the power supply unit (not shown).

The anode 54 can be formed, for example, by forming a conductive diamond film on a conductive substrate having a width of about 10 mm and a length of about 100 mm formed of silicon. Further, for example, two sheets having a width of about 10 mm and a length of about 50 mm may be formed side by side. This conductive diamond film has boron dove conductivity. The conductive diamond film is formed on the conductive substrate with a film thickness of about 3 μm by the plasma CVD method.

The conductive film 56 is arranged on the anode 54 on which the conductive diamond film is formed. The conductive film 56 is a proton conductive type ion exchange film and has a thickness of about 100 to 200 μm. The conductive film 56 is formed with a plurality of conductive film side holes (conductive film side grooves) 56c penetrating in the thickness direction (stacking direction Z).

In the present embodiment, each conductive film side hole 56c has substantially the same shape. Specifically, each conductive film side hole 56c has an elongated hole shape in the width direction Y. The plurality of conductive film side holes 56c are provided so as to be arranged in a row at a predetermined pitch along the longitudinal direction (liquid flow direction X). The shape and arrangement of the conductive film side holes 56c may be different. Further, at least one conductive film side hole 56c may be formed.

The cathode 55 is arranged on the conductive film 56. The cathode 55 is made of, for example, a titanium electrode plate having a thickness of about 0.5 mm. Further, a power feeding shaft 55b for the cathode is electrically connected to the other end of the cathode 55 in the longitudinal direction (downstream side in the liquid flow direction X) via a spiral spring portion 55a. The power feeding shaft 55b is inserted into a through hole 211 formed on the other end side of the bottom wall portion 21 in the liquid passing direction X. A portion of the power feeding shaft 55b that protrudes to the outside of the electrode case 20 is electrically connected to the negative electrode of a power supply unit (not shown).

Further, the cathode 55 is formed with a plurality of cathode side holes (cathode side groove portion: electrode side groove portion) 55e penetrating in the thickness direction. In the present embodiment, each cathode side hole 55e has substantially the same shape. Specifically, each cathode side hole 55e has a V shape in which the bent portion 55f is arranged on the downstream side in a plan view. The plurality of cathode side holes 55e are provided so as to line up in a row at a predetermined pitch along the longitudinal direction (liquid flow direction X). The pitch of the cathode side holes 55e may be the same as the pitch of the conductive film side holes 56c, or may be different from the pitch of the conductive film side holes 56c. Further, the shape and arrangement of the cathode side holes 55e may be different. Further, at least one cathode side hole 55e may be formed.

Further, when the conductive film 56 and the cathode 55 are laminated, at least a part of the mutual holes (cathode side hole 55e and the conductive film side hole 56c) must communicate with each other, and the conductive film 56 and the cathode 55 must be electrically connected with each other. It is necessary that a sufficient contact area is secured. The conductive film 56 and the cathode 55 may have the same projected dimensions (sizes in a plan view) or may be different as long as they satisfy the above conditions.

In the present embodiment, the cathode 55 has a larger width in the width direction Y than the conductive film 56.

The projected dimensions of the anode 54 may be the same as or different from those of the conductive film 56 and the cathode 55, but when laminated, the conductive film side holes 56c can be closed from below. The size is preferable.

In the present embodiment, the anode 54 and the conductive film 56 have substantially the same projection dimensions.

By doing so, when the laminated body 51 is formed, both ends of the cathode 55 in the width direction are made to protrude outward from the anode 54 and the conductive film 56.

If both ends of the cathode 55 in the width direction are projected outward from the anode 54 and the conductive film 56, at least the inner surface 22a and the anode 54 of the peripheral wall portion 22 are formed when the laminated body 51 is housed in the recess 23. The space portion S is formed between the two. The space portion S is a space formed to prevent water from staying between the outer edge portion of the laminated body 51 and the peripheral wall portion 22. By forming such a space portion S, it is possible to prevent scales composed of calcium components and the like generated by electrolysis of water from accumulating between the laminated body 51 and the peripheral wall portion 22.

Further, in the present embodiment, as shown in FIGS. 2 and 3, a space portion S is also formed between the inner surface 22a of the peripheral wall portion 22 and the cathode 55.

The cathode 55, the conductive film 56, and the anode 54 may have substantially the same projection dimensions, and a gap larger than the manufacturing tolerance may not be formed between the peripheral wall portion 22 and the outer edge portion of the laminated body 51.

Further, it is preferable that the feeding body 53 efficiently supplies electricity to the anode 54, and the elastic body 60 is pressed by the entire lower surface of the feeding body 53 (lower surface 50b of the electrolytic unit 50). It is preferable to use the projected dimension of.

In the present embodiment, the dimension of the power feeding body 53 in the width direction Y is smaller than that of the anode 54 and the conductive film 56, and the dimension of the elastic body 60 in the width direction Y is substantially the same as the anode 54 and the conductive film 56. I am trying to be. The projected dimensions of the feeding body 53 and the elastic body 60 can be various.

The electrolytic unit 50 having such a configuration can be housed in the recess 23 of the electrode case 20 by the method shown below, for example.

First, the feeding body 53 is arranged on the elastic body 60 inserted in the recess 23 of the electrode case 20. Specifically, the feeding body 53 is inserted into the recess 23 of the electrode case 20 with the tip of the feeding shaft 53b facing downward, and the feeding shaft 53b is inserted into one of the through holes 211. Then, the feeding body 53 is laminated on the elastic body 60.

Next, the anode 54 is inserted into the recess 23 of the electrode case 20, and the anode 54 is laminated on the feeding body 53. In the present embodiment, a plurality of positioning protrusions 221 extending in the vertical direction (stacking direction Z) are formed inside the peripheral wall portion 22 of the electrode case 20 along the longitudinal direction (liquid flow direction X). .. Then, the positional deviation of the anode 54 at the time of stacking is suppressed by the positioning projection 221.

Next, the conductive film 56 is inserted into the recess 23 of the electrode case 20, and the conductive film 56 is laminated on the anode 54. At this time, the conductive film 56 is placed on the anode 54 so that the concave relief portion 56b formed on the outer peripheral portion (contour line in a plan view) 56a of the conductive film 56 faces the positioning projection 221 of the peripheral wall portion 22. They are laminated (see FIG. 4). By doing so, it is possible to prevent the conductive film 56 that has expanded containing water from interfering with the positioning projection 221.

Next, the cathode 55 is inserted into the recess 23 of the electrode case 20 with the tip of the feeding shaft 55b facing downward, and the feeding shaft 55b is inserted into the other through hole 211 to allow the cathode 55 to pass through the other through hole 211. 55 is laminated on the conductive film 56. At this time, the cathode 55 is laminated on the conductive film 56 so that the concave relief portion 55d formed on the outer peripheral portion (contour line in a plan view) 55c of the cathode 55 faces the positioning projection 221 of the peripheral wall portion 22. (See Fig. 5). By doing so, it is possible to prevent the cathode 55 having a larger dimension in the width direction Y from interfering with the positioning projection 221. That is, the relief portion 55d is formed so that the interference between the cathode 55 and the positioning projection 221 can be suppressed while increasing the surface area of the cathode 55 as much as possible.

Next, the O-ring 31, the washer 32, the washer 33, and the O-ring 31, the washer 32, and the washer 33, respectively And insert the hexagon nut 34. In this way, the electrolytic portion 50 is housed and fixed in the recess 23 in a state of being pressed against the elastic body 60 by tightening the hexagon nut 34.

In the present embodiment, by moving the electrode case lid 40 relative to the electrode case 20 in the stacking direction Z, the protrusion 42 is inserted into the recess 23, and the protrusion 42 is inserted into the fitting recess 411 for welding. Is inserted.

As described above, the ozone water generator 1 according to the present embodiment can be assembled simply by moving each member relative to the electrode case 20 in the vertical direction (stacking direction Z).

Here, in the present embodiment, the production efficiency of ozone 70 can be further stabilized.

Specifically, the shapes (contour shape and size) of the conductive film side hole 56c and the cathode side hole 55e are different from each other in a plan view (when viewed along the stacking direction of the laminated body 51). ..

In the present embodiment, the conductive film side hole 56c is formed into an elongated hole shape in the width direction Y, and the cathode side hole 55e is formed into a V shape in which the bent portion 55f is arranged on the downstream side in a plan view. , The contour shapes of the conductive film side hole 56c and the cathode side hole 55e in a plan view are different.

By forming the conductive film side hole 56c into an elongated hole in the width direction Y in this way, the conductive film side hole 56c extends in a direction (width direction Y) orthogonal to the liquid flow direction X in a plan view. This is the case (see FIG. 6). That is, the angle formed by the extending direction and the liquid passing direction X in the plan view of the conductive film side hole 56c is 90 degrees.

On the other hand, the cathode side hole 55e has a shape in which two elongated holes extending from the outside of the upstream side and the width direction Y toward the bent portion 55f located on the downstream side and the center of the width direction Y are communicated with each other by the bent portion 55f. doing. That is, the two elongated holes extending from the bent portion 55f toward the tip on the upstream side extend in the direction intersecting the liquid passage direction X in a plan view (see FIG. 7).

Here, in the present embodiment, the cathode side hole 55e is formed so that the tip is located outside in the width direction on the upstream side of the bent portion 55f. Therefore, the two elongated holes forming the cathode side hole 55e extend in a direction that intersects the liquid passing direction X and intersects the width direction Y (the direction orthogonal to the liquid passing direction X), respectively. That is, in the extending directions of the two elongated holes forming the cathode side hole 55e, the absolute value of the acute angle formed with the liquid passing direction X is larger than 0 degrees and smaller than 90 degrees, respectively.

Therefore, the cathode side hole 55e has, for example, the extending direction of one elongated hole inclined by 30 degrees with respect to the liquid passing direction X, and the extending direction of the other elongated hole with respect to the liquid passing direction X. It can be a V-shaped groove that is tilted by -30 degrees. The absolute value of the acute angle formed by the extending direction of one elongated hole and the liquid passing direction X is set to the same value as the absolute value of the acute angle formed by the extending direction of the other elongated hole and the liquid passing direction X. No need. That is, it is not necessary for the shape of the cathode side hole 55e in a plan view to be line-symmetric with respect to a straight line extending through the bent portion 55f and extending in the liquid passage direction X.

As described above, in the present embodiment, in the plan view in the state where the cathode 55 is laminated on the conductive film 56, the extending directions of the two elongated holes forming the cathode side hole 55e are the conductive film side holes, respectively. It is non-parallel to the extending direction of 56c.

Then, in a state where the cathode 55 is laminated on the conductive film 56, the conductive film side hole 56c and the cathode side hole 55e are partially communicated with each other. That is, a part of the elongated holes extending in different directions is communicated with each other. In this way, the conductive film 56 and the cathode 55 are formed in a plan view with the outer peripheral portion (contour line in the plan view) 56d of the conductive film side hole 56c and the outer peripheral portion (contour line in the plan view) of the cathode side hole 55e. It will be laminated so as to have an intersection 59 where 55 g intersects (see FIG. 7).

Further, in the present embodiment, a plurality of conductive film side holes 56c are formed in the conductive film 56 so as to be lined up in a line along the liquid passage direction X, and the cathode side holes 55e pass through the cathode 55. A plurality of them are formed so as to be lined up in a line along the liquid direction X. In the two cathode side holes 55e adjacent to each other in the liquid flow direction X, the bent portion 55f of the cathode side hole 55e arranged on the upstream side is located on the downstream side of the tip of the cathode side hole 55e arranged on the downstream side. It is arranged so that it is located. Further, in a state where the cathode 55 is laminated on the conductive film 56, a plurality of conductive film side holes 56c are arranged so as to intersect one cathode side hole 55e.

Therefore, in the present embodiment, in a plan view in which the cathode 55 is laminated on the conductive film 56, a plurality of communication regions R1 with the conductive film side holes 56c are formed in one cathode side hole 55e, and a plurality of communication regions R1 are formed. A plurality of exposed regions R2 where the conductive film 56 is exposed will be formed. That is, in the present embodiment, a plurality of intersections 59 are formed in one cathode side hole 55e.

At this time, the shapes of the plurality of conductive film side holes 56c are the same, and the shapes of the plurality of cathode side holes 55e are the same, so that the pitch of the conductive film side holes 56c in the liquid passage direction X and the passage of the cathode side holes 55e are the same. It is preferable that the pitch of the liquid direction X is the same. In this way, the communication region R1 and the exposed region R2 appear regularly along the liquid passage direction X.

Further, as described above, in the present embodiment, the cathode 55 has a larger width in the width direction Y than the conductive film 56. Therefore, the contact area (electrolysis area) between the cathode 55 and the conductive film 56 is exposed from the area of the upper surface of the conductive film 56 (the portion above the conductive film 56 where the conductive film side hole 56c is not formed). It can be approximated by subtracting the total area of the region R2.

In this way, if the cathode 55 and the conductive film 56 are configured as described above, the conductive film 56 is displaced relative to the cathode 55 when the laminated body 51 is formed. Also, the amount of change in the contact area (electrolysis area) between the cathode 55 and the conductive film 56 can be reduced. That is, when the positions are displaced by the same amount, the amount of change in the electrolytic area can be made smaller in the configuration shown in the present embodiment than in the configuration shown in the above-mentioned conventional technique.

For example, as shown in FIG. 8, when the conductive film 56 is displaced relative to the cathode 55 in the liquid flow direction X when the laminated body 51 is formed, the area of one exposed region R2 (1). The area of one communication region R1) changes slightly in the vicinity of the bent portion 55f of the cathode side hole 55e. However, the area of one exposed region R2 hardly changes in the other regions. Therefore, the amount of change in the total area of the exposed region R2 in one cathode side hole 55e is substantially the same as the amount of change in the vicinity of the bent portion 55f.

Further, in the present embodiment, even if the conductive film 56 is displaced relative to the cathode 55 in the liquid flow direction X, the outer peripheral portion of the conductive film 56 (in a plan view) is provided as long as the amount of displacement is to some extent. The contour line) 56a can come into contact with the cathode 55. Therefore, it is possible to prevent the contact area of the conductive film 56 from changing with the cathode 55 due to the outer peripheral portion (contour line in a plan view) 56a protruding from the cathode 55. As described above, in the case of the configuration shown in the present embodiment, the contact area of the conductive film 56 with the cathode 55 after the displacement in the liquid flow direction X is the case where the conductive film 56 is laminated at a regular position. There is only a slight change from the contact area of the conductive film 56 with the cathode 55 in.

Further, as shown in FIG. 9, when the conductive film 56 is displaced relative to the cathode 55 in the width direction Y when forming the laminated body 51, the area of one exposed region R2 (one). The area of the communication region R1) basically does not change. However, the length of the conductive film side hole 56c in the width direction Y is slightly shorter at the portion where the relief portion 56b is formed, and the area of one exposed region R2 is slightly changed at this portion. In this way, when the position is relatively displaced in the width direction Y, the amount of change in the total area of the exposed region R2 in one cathode side hole 55e is substantially the same as the amount of change in the portion where the relief portion 56b is formed. Become.

Further, in the present embodiment, as shown in FIG. 9, even if the conductive film 56 is displaced relative to the cathode 55 in the width direction Y, the conductive film 56 is provided with a certain amount of misalignment. The outer peripheral portion (contour line in a plan view) 56a can come into contact with the cathode 55. Therefore, in the case of the configuration shown in the present embodiment, the contact area of the conductive film 56 with the cathode 55 after the displacement in the width direction Y is the conductivity when the conductive film 56 is laminated at a regular position. Only a slight change is made from the contact area of the film 56 with the cathode 55.

As described above, in the configuration shown in the present embodiment, even if the conductive film 56 is displaced relative to the cathode 55 in the horizontal direction (liquid flow direction X and width direction Y), the conductive film 56 Only the contact area with the cathode 55 changes slightly.

On the other hand, as shown in the above-mentioned conventional technique, when a groove is formed by superimposing holes having the same shape, if the conductive film 56 is displaced with respect to the cathode 55, it is not formed in a normal state. The exposed region R2 is formed in each groove. Therefore, the total area of the exposed regions R2 formed in each groove is the amount of change in the contact area between the conductive film 56 and the cathode 55. When the conductive film 56 is displaced by the same amount with respect to the cathode 55, the exposed region R2 newly formed in each groove is formed by the conductive film 56 and the cathode 55 in the configuration shown in the present embodiment. The value is larger than the amount of change in the contact area.

For example, when the conductive film 56 is displaced with respect to the cathode 55 by the same amount in the liquid passing direction X, the exposed region R2 only changes in the vicinity of the bent portion 55f in the configuration shown in the present embodiment. However, in the configuration shown by the above-mentioned conventional technique, an exposed region R2 is formed in substantially the entire width direction Y of the groove portion 52 so as to protrude by the amount of displacement in the liquid passing direction X. In this way, when the conductive film 56 is displaced with respect to the cathode 55 by the same amount, the configuration shown in the present embodiment has the conductive film 56 and the cathode 55 more than the configuration shown in the conventional technique. The amount of change in the contact area of is small.

Further, in the present embodiment, arcuate curved portions 56e are formed at both ends of the conductive film side hole 56c in the width direction Y in a plan view. By doing so, an edge is prevented from being formed on the outer peripheral portion (contour line in a plan view) 56d of the conductive film side hole 56c.

Further, an arcuate curved portion 55h is formed at the bent portion 55f and the tip of the cathode side hole 55e in a plan view. By doing so, an edge is not formed on the outer peripheral portion (contour line in a plan view) 55 g of the cathode side hole 55e.

As described above, if the outer peripheral portion (contour line in the plan view) 56d of the conductive film side hole 56c and the outer peripheral portion (contour line in the plan view) 55g of the cathode side hole 55e are made into a smooth shape, the electrolytic treatment is performed. It is possible to alleviate the local electric field concentration. As a result, ozone 70 can be generated more evenly in the entire portion exposed to the groove 52 at the interface 57, and the production efficiency of ozone 70 can be further stabilized.

Next, the operation and operation of the ozone water generator 1 shown in the present embodiment will be described.

First, in order to supply water to the ozone water generator 1, water is supplied from the inflow port 111 to the flow path 11. Then, a part of the water supplied to the flow path 11 flows into the groove 52 and comes into contact with the interfaces 57 and 58 of the groove 52.

In such a state (a state in which the electrolytic unit 50 is immersed in water by the supplied water), when a voltage is applied between the anode 54 and the cathode 55 of the electrolytic unit 50 by a power supply unit (not shown), the anode 54 and A potential difference is generated between the cathode 55 and the cathode 55 via the conductive film 56. By creating a potential difference between the anode 54 and the cathode 55 in this way, the anode 54, the conductive film 56, and the cathode 55 are energized, and electrolysis treatment is mainly performed in the water in the groove 52, so that the conductivity is conductive. Ozone 70 is generated in the vicinity of the interface 57 between the film 56 and the anode 54.

Then, the ozone 70 generated in the vicinity of the interface 57 between the conductive film 56 and the anode 54 dissolves in water while being carried to the downstream side of the flow path 11 along the flow of water. In this way, dissolved ozone water (ozone water: electrolytic liquid) is generated by dissolving ozone 70 in water.

Such an ozone water generator 1 can be applied to an electric device that utilizes an electrolytic liquid generated by the electrolytic liquid generator, a liquid reformer including an electrolytic liquid generator, and the like.

The electrical equipment and liquid reformer include water treatment equipment such as water purification equipment, washing machines, dishwashers, hot water washing toilet seats, refrigerators, hot water supply and water supply equipment, sterilizers, medical equipment, air conditioning equipment, or kitchens. Equipment etc. can be mentioned.

As described above, the ozone water generator (electrolytic liquid generator) 1 according to the present embodiment is laminated so that the conductive film 56 is interposed between the anode 54 and the cathode 55 (between the electrodes adjacent to each other). It has a laminated body 51, and includes an electrolytic unit 50 that electrolyzes water (liquid). Further, the ozone water generator 1 includes a housing 10 in which the electrolytic unit 50 is arranged inside.

Further, the housing 10 has an inflow port 111 into which water supplied to the electrolysis unit 50 flows in, and an outflow port 112 in which ozone water (electrolyzed water: electrolytic liquid) generated by the electrolysis unit 50 flows out. A flow path 11 is formed in which the liquid direction X intersects the stacking direction Z of the laminated body 51.

Further, the electrolytic portion 50 is formed with a groove portion 52 that opens into the flow path 11 and exposes at least a part of the interfaces 57 and 58 between the conductive film 56 and the electrode.

The groove 52 includes a conductive film side hole (conductive film side groove) 56c formed in the conductive film 56 and a cathode side hole (electrode) 54 formed in the cathode (electrode) 54 and communicating with the conductive film side hole 56c. The electrode side groove portion) 55e and the like.

Then, the shape of the conductive film side hole 56c and the shape of the cathode side hole 55e are different from each other when viewed along the stacking direction Z of the laminated body 51.

In this way, even if the conductive film 56 is displaced relative to the cathode (electrode) 55 in the direction intersecting the stacking direction Z, the contact area between the conductive film 56 and the cathode (electrode) 55 Change can be suppressed. That is, the electrolytic area (energized area) between the conductive film 56 and the cathode (electrode) 55 can be secured more stably.

In this way, if the electrolytic area (energization area) of the conductive film 56 and the cathode (electrode) 55 can be stably secured, the current density of the current flowing through the electrolytic unit 50 can be made more uniform. .. That is, it is possible to prevent the current density of the current flowing through the electrolytic unit 50 from changing for each individual product. As a result, the production efficiency of ozone (electrolytic product) 70 can be further stabilized.

As described above, according to the present embodiment, the production efficiency of ozone (electrolytic product) 70 can be further stabilized even when the conductive film 56 and the cathode (electrode) 55 are misaligned. .. That is, it is possible to obtain an ozone water generator 1 in which the production efficiency of ozone (electrolytic product) 70 is substantially constant.

Further, in the present embodiment, the conductive film 56 and the cathode 55 are viewed along the stacking direction Z of the laminated body 51, and the outer peripheral portion 56d of the conductive film side hole 56c and the outer peripheral portion of the cathode side hole 55e. It is laminated so as to have an intersection 59 where 55 g intersects.

By doing so, when the conductive film 56 and the cathode (electrode) 55 are misaligned, the change in the contact area between the conductive film 56 and the cathode (electrode) 55 can be more reliably suppressed.

Further, in the present embodiment, the conductive film side hole 56c extends in a direction intersecting the liquid passing direction (liquid passing direction) X.

In this way, the ozone 70 generated in the vicinity of the interface 57 between the conductive film 56 and the anode 54 can be quickly peeled off from the interface 57. That is, it is possible to prevent the bubbles of ozone 70 generated in the vicinity of the interface 57 from becoming large.

If bubbles of ozone 70 grow large, even if they are peeled off from the interface 57, they may float in water (in liquid) without being dissolved in water (liquid), and ozone (electrolysis) in water (in liquid) may drift. The dissolved concentration of product) 70 may decrease.

However, if the conductive film side hole 56c is formed so as to extend in the direction intersecting the liquid flow direction X as in the present embodiment, the ozone 70 bubbles can be quickly peeled off from the interface 57 before they grow large. Can be done. As a result, the dissolution of ozone (electrolytic product) 70 in water (liquid) can be further improved.

Further, in the present embodiment, the conductive film side hole 56c extends in a direction orthogonal to the liquid passage direction X.

In this way, the ozone 70 generated in the vicinity of the interface 57 between the conductive film 56 and the anode 54 can be more quickly peeled off from the interface 57.

Further, in the present embodiment, the electrodes adjacent to each other are the cathode 55 and the anode 54. The electrode side groove portion has a cathode side hole (cathode side groove portion) 55e formed in the cathode 55, and the cathode side hole 55e extends in a direction intersecting the liquid passage direction X.

By doing so, it is possible to suppress the retention of ozone (electrolytic product) 70 in the groove 52, and the ozone 70 can be more efficiently flowed into the flow path 11.

Further, in the present embodiment, the cathode side hole 55e has a V shape in which the bent portion 55f is arranged on the downstream side in a state of being viewed along the stacking direction Z of the laminated body 51.

In this way, the generated ozone (electrolytic product) 70 moves along the inclination of the cathode side hole 55e to the central portion where the flow velocity becomes relatively large, and the retention of ozone (electrolytic product) 70 is further increased. It can be suppressed. As a result, the ozone concentration (electrolytic product concentration) can be further increased.

Further, the shapes of the plurality of conductive film side holes 56c are the same, and the shapes of the plurality of cathode side holes 55e are the same. It is preferable that the pitch in the direction X is the same.

By doing so, the communication region R1 and the exposed region R2 appear regularly along the liquid passage direction X, so that the influence of the misalignment can be reduced more reliably.

Further, it is preferable that arcuate curved portions 56e are formed at both ends of the conductive film side hole 56c in the width direction Y in a plan view.

Further, it is preferable that an arcuate curved portion 55h is formed in the bent portion 55f and the tip of the cathode side hole 55e in a plan view.

By doing so, it is possible to alleviate the local electric field concentration during the electrolytic treatment, and it is possible to generate ozone 70 more evenly over the entire portion exposed to the groove 52 at the interface 57. can. As a result, the production efficiency of ozone 70 can be further stabilized.

Although the preferred embodiment of the present invention has been described above, the present invention is not limited to the above embodiment, and various modifications are possible.

For example, in the above embodiment, an ozone water generator that generates ozone and dissolves the ozone in water to generate ozone water has been exemplified, but the substance to be generated is not limited to ozone, for example, hypochlorite. Chloric acid may be generated and used for sterilization, water treatment, or the like. It is also possible to use a device that produces oxygen water, hydrogen water, chlorine-containing water, hydrogen peroxide water, and the like.

It should be noted that these electrolytic liquid generators can also be used in a state of being incorporated in other equipment or equipment. When incorporating the electrolytic liquid generator into other equipment or equipment, it is preferable to arrange the electrolytic liquid generator in an upright state so that the inlet is at the bottom and the outlet is at the top, as in the ozone generator 1. The arrangement is not limited to this, and an appropriate arrangement is possible.

Further, the anode 54 can be made of, for example, conductive silicon, conductive diamond, titanium, platinum, lead oxide, tantalum oxide, etc., and is an electrode having conductivity and durability capable of generating electrolyzed water. Any material may be used as long as it is used. Further, when the anode 54 is a diamond electrode, the manufacturing method thereof is not limited to the manufacturing method by film formation. It is also possible to construct the substrate using a material other than metal.

Further, the cathode 55 may be any electrode having conductivity and durability, and may be made of, for example, platinum, titanium, stainless steel, conductive silicon, or the like.

Further, the cathode side hole 55e is formed in an elongated shape extending along the liquid passage direction X so that the cathode side hole 55e and the conductive film side hole 56c intersect in a cross shape in a plan view at the time of stacking. You may.

Further, the extending direction of the conductive film side hole 56c may be a direction intersecting the liquid passing direction X and the width direction Y (the direction orthogonal to the liquid passing direction X). At this time, the extending direction of the conductive film side hole 56c and the extending direction of the cathode side hole 55e are made non-parallel, and the conductive film side hole 56c and the cathode side hole 55e intersect at the time of stacking. preferable.

Further, the conductive film side hole 56c and the cathode side hole 55e may have similar shapes so that the entire small hole exists in the large hole at the time of stacking.

Further, the conductive film side hole 56c may be V-shaped, and the cathode side hole 55e may be elongated.

In addition, the electrode case, the electrode case lid, and other detailed specifications (shape, size, layout, etc.) can be changed as appropriate.

1 Ozone water generator (electrolytic liquid generator)
10 Housing 11 Flow path 111 Inlet 112 Outlet 50 Electrolyzer 51 Laminated body 52 Groove 54 Anode (electrode)
55 Cathode (electrode)
55e Cathode gutter (cathode gutter: electrode gutter)
55f Bent part 56 Conductive film 56a Outer peripheral part 56c Conductive film gutter (conductive film gutter)
57 Interface (interface between conductive membrane and anode)
58 Interface (interface between conductive membrane and cathode)
59 Intersection X Liquid flow direction Y Width direction (direction orthogonal to the liquid flow direction)
Z stacking direction

Claims (6)

An electrolytic unit that has a laminated body in which a conductive film is interposed between electrodes adjacent to each other and electrolyzes a liquid, and an electrolytic unit.
The housing in which the electrolytic part is arranged and
With
The housing has an inflow port into which the liquid supplied to the electrolytic part flows in and an outflow port from which the electrolytic liquid generated in the electrolytic part flows out, and the liquid passing direction intersects the laminating direction of the laminated body. A flow path is formed in the direction of
The electrolytic portion is formed with a groove portion that opens into the flow path and exposes at least a part of the interface between the conductive film and the electrode.
The groove portion includes a conductive film side groove portion formed on the conductive film and an electrode side groove portion formed on the electrode and communicating with the conductive film side groove portion.
An electrolytic liquid generator characterized in that the shape of the conductive film-side gutter and the shape of the electrode-side gutter are different when viewed along the stacking direction of the laminate. The conductive film and the electrode have an intersecting portion where the outer peripheral portion of the conductive film side groove portion and the outer peripheral portion of the electrode side groove portion intersect when viewed along the stacking direction of the laminated body. The electrolytic liquid generator according to claim 1, wherein the electrolytic liquid generator is laminated on the same surface. The electrolytic liquid generating apparatus according to claim 1 or 2, wherein the conductive film side groove portion extends in a direction intersecting the liquid passing direction. The electrolytic liquid generating apparatus according to claim 3, wherein the conductive film side groove portion extends in a direction orthogonal to the liquid passing direction. The electrodes adjacent to each other are a cathode and an anode, and the electrode side groove portion has a cathode side groove portion formed on the cathode, and the cathode side groove portion extends in a direction intersecting the liquid passage direction. The electrolytic liquid generator according to any one of claims 1 to 4. The electrolytic liquid generation according to claim 5, wherein the cathode gutter has a V shape in which the bent portion is arranged on the downstream side when viewed along the stacking direction of the laminated body. Device.

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