JP3498076B2 - Electrolytic ozone water production equipment - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electrolytic ozone water producing apparatus, and more specifically, it is adapted to electrolyze water to obtain water in which ozone is dissolved (hereinafter referred to as ozone water). The present invention relates to an electrolytic ozone water producing device.

[0002] Conventionally, as a method for obtaining ozone water, an ozone aeration method and an electrolysis method (electrolysis method) for electrolyzing water are known, and the ozone aeration method is a method of producing oxygen gas (air It may also be used as a raw material) to make ozone a high concentration of ozone gas, and this ozone gas and water are brought into gas-liquid contact to dissolve ozone in water. However, this method requires a large equipment (a large power supply device is required because a high voltage is required for silent discharge), and since ozone gas of high concentration is generated once and then dissolved in water, There is a risk of harmful ozone gas leakage, and in the obtained ozone water, a considerable amount of undissolved gas phase ozone remains in the water, and this ozone may be released into the air at the place of use. Therefore, it has a problem of ozone odor and a problem of polluting the air where ozone water is used with the released ozone.

Further, in the electrolysis type ozone water producing apparatus, ozone is directly dissolved in water during electrolysis because ozone is mixed into oxygen generated on the anode electrode side by electrolyzing water. Is. In the conventional electrolytic ozone water producing device, if a thin ion exchange membrane is interposed between both electrodes for electrolysis to make the electrolysis more efficient, the ozone concentration increases, and the anode electrode has a catalyst function for ozone generation. It is also known that the efficiency of ozone generation is enhanced by using platinum or the like.

Further, it has been known that more efficient electrolysis occurs when both electrodes for electrolysis are formed in a wire mesh shape. Conventionally, platinum electrodes made of wire mesh are formed on both sides of a flat plate ion exchange membrane. The most efficient is an ozonizer (hereinafter, referred to as a flat plate electrolytic ozonizer) in which water is passed through the anode electrode side in contact with both the electrode and the exposed surface of the ion exchange membrane. It is said to be an electrolytic ozone water production device.

Since the generated ozone is immediately dissolved in water, the plate type electrolytic ozonizer has the advantage that the risk of ozone gas leakage is less than that of the ozone gas aeration method and the apparatus is downsized. There is a problem that the ozone concentration of the ozone water used is still low. The inventors of the present invention have made various proposals in order to solve this problem in the past, such as electrolyzing the raw material water while passing through a narrow flow path, or using a wire mesh electrode not in a direction orthogonal to the surface to form a wire mesh. It was possible to obtain ozone water with a high ozone concentration by passing through the wavy bending wire portion that composes intricately and flowing the raw material water in the direction parallel to the surface of the wire mesh. However, in this method, water is forced to flow through a narrow channel, so that there is a problem that pressure loss is very large, the pressure-feeding device for raw material water becomes large, and power consumption also becomes large.

[0006] Even when this electrolytic ozonizer is used, minute bubbles of ozone are suspended and remain in the ozone water although they are in a very small amount, and the ozone water immediately after being obtained has an ozone odor. It has been pointed out that there are doubts about its use in closed spaces such as medical examination rooms.

Incidentally, the conventional electrolytic ozone water producing apparatus is
Although it has the feature that the device is simpler than the silent discharge ozone gas dissolution method, a large current of several tens of amperes is still required for the power supply device. It has a problem that it is not suitable for miniaturization. That is, when a small electric power source is used and the electrode area for electrolysis is reduced for downsizing, the ozone concentration of the obtained ozone water is extremely lowered, and downsizing cannot be realized. As a result of investigating the reason for this, it is difficult for the conventional method to make a uniform flow in which the raw material water efficiently contacts the electrode surface of a small area when the size is reduced, and the ozone generation efficiency is extremely low. It was the cause. Further, in the case of a small area anode electrode, it is of course that the contact time is short, but gas-liquid contact is likely to be insufficient, so that bubbles of undissolved ozone gas are suspended in ozone water and an ozone odor is generated. It was also found that the ozone water generation efficiency was reduced accordingly.

On the other hand, there is a growing demand for electrolysis type ozone water production equipment of low power consumption, and if ozone water can be obtained with low power, water purification combined with solar cells on a floating body for purification of lakes and the like. It is possible to put the device into practical use, and it is also possible to install a solar cell driven ozone water sterilizer even when using rainwater such as on remote islands and mountain peaks, which can greatly contribute to environmental purification.

[0009]

Therefore, in view of the above problems and demands, the present invention is small and easy to manufacture, and moreover, even minute ozone bubbles suspended in ozone water are efficiently used in ozone water. It is an object of the present invention to provide an electrolytic ozone water production apparatus which can be dissolved to obtain high-concentration ozone water with a small pressure loss.

[0010]

In order to achieve the above object, the present invention provides a platinum having an ozone generating catalytic function on an inner surface of an ion exchange membrane 11 on a part or all of a peripheral surface of an ozonizer body 20 having a circular cross section. An anode electrode 12 made of a metal such as metal and having a porous surface shape such as a wire mesh is superposed, and a cathode electrode 13 made of a corrosion resistant metal and having a porous surface shape such as a wire mesh is superposed on the outer surface of the ion exchange membrane 11. The ozonizer body 20 is provided with a raw water inlet 21 and an ozone water outlet 22 and the raw water in the ozonizer body 20 swirls to swirl to the electrolysis generating surface 10. The technical means is provided by providing the swirling flow generation device 30 in which the raw material water to be pressed is caused to flow by centrifugal force.

Therefore, in the electrolytic ozone water producing apparatus of the present invention, the water in contact with the electrolysis generating surface portion 10 is electrolyzed, oxygen is generated on the side of the anode 12, and a part of the generated oxygen is ozoned. Since ozone is easily dissolved in water, it has the same function as immediately dissolving in water to obtain ozone water, as in the conventional flat plate type electrolytic ozone water producing apparatus.

Further, the electrolysis generating surface portion 10 of the present invention forms a part or the whole of the peripheral surface of the ozonizer body 20 having a circular cross section, and the swirling flow generating device 30 swirls the raw material water in the ozonizer body 20, Since the raw material water which swirls on the electrolysis generating surface portion 10 is arranged to flow under pressure by centrifugal force, the electrolysis generating surface portion 10 has the first action of increasing the flow velocity of the raw material water and generating oxygen and ozone. Is immediately moved to another place from the place where it is generated, and has a function of maintaining smooth electrolysis to improve ozone generation efficiency and ozone dissolution efficiency. In addition, as a second action, the water in the portion close to the electrolysis generating surface portion 10 is subjected to a centrifugal force by the swirling flow and is pressured (local internal pressure).
Is increased, and the action of improving the solubility of ozone is exhibited.

Next, in the second aspect of the present invention, a part or all of the peripheral surface of the ozonizer main body 20 having a circular cross section is made of metal such as platinum having an ozone generating catalytic function on the inner surface of the ion exchange membrane 11 to form a metal mesh. The anode electrodes 12 in the form of porous surfaces such as
On the outer surface of the ion exchange membrane 11, an electrolytic generation surface portion 1 is formed by stacking a cathode electrode 13 made of a corrosion-resistant metal and having a porous surface shape such as a wire mesh shape.
0, the ozonizer body 20 is provided with a raw water inlet 21 on the central axis of the circle and an ozone water outlet 22 in the tangential direction of the circle, and the ozonizer body 20 is further provided with the inlet 21. Ozone water outlet 2 by sucking more raw water
2. A swirl flow generator 30 including a rotary vane 31 and a drive source 32 for pumping and discharging from the rotary vane 2 is provided, and the raw material water sucked by the rotary vane 31 swirls inside the ozonizer body 20 to the electrolysis generating surface portion 10. It is a technical measure that is made to flow by pressing with centrifugal force.

Therefore, according to the present invention, in addition to the operation of claim 1, the swirl flow generating device 30 is constituted by the rotary blade 31 and the drive source 32 thereof. It exhibits an action capable of obtaining a desired flow velocity and centrifugal force of water.

Next, in the third aspect of the present invention, a part or all of the peripheral surface of the ozonizer body 20 having a circular cross section is made of metal such as platinum having an ozone generating catalytic function on the inner surface of the ion exchange membrane 11 and has a wire mesh shape. The anode electrodes 12 in the form of porous surfaces such as
On the outer surface of the ion exchange membrane 11, an electrolytic generation surface portion 1 is formed by stacking a cathode electrode 13 made of a corrosion-resistant metal and having a porous surface shape such as a wire mesh shape.
0, the raw water flow pressure inlet 21a is provided in the circular tangential direction in the ozonizer body 20, and the ozone water outlet 22 is provided at a proper position.
The raw material water pressure-fed into the ozonizer main body 20 from the raw water flow pressure inlet 21a is swirled in the ozonizer main body 20 and pressed against the electrolysis generating surface portion 10 by centrifugal force to flow through. It is a technical measure.

Therefore, according to the present invention, in addition to the function of the first aspect, the raw water flow pressure inlet 21a is provided in a circular tangential direction, and the ozone water flow outlet 22 is provided at an appropriate position.
The raw material water pumped into the ozonizer main body 20 is swirled in the ozonizer main body 20 so as to flow by being pressed against the electrolysis generating surface portion 10 by centrifugal force, that is, swirling according to claim 1. Since the flow generator 30 is composed of the raw water flow pressure inlet 21 provided in the circular tangential direction, when pressure water such as commercial tap water can be used as the raw water, the swirling is performed without using any power source. It has the effect of obtaining a flow.

Next, in the invention of claim 4, a part or all of the peripheral surface of a cylindrical ozonizer body 20 having a circular cross section and allowing raw material water to flow from one end to the other end is ion-exchange membrane. On the inner surface of 11, an anode electrode 12 made of metal such as platinum having a function of generating ozone and having a porous surface shape such as a wire mesh shape is superposed.
On the outer surface of the ion exchange membrane 11, an electrolytic generation surface portion 1 is formed by stacking a cathode electrode 13 made of a corrosion-resistant metal and having a porous surface shape such as a wire mesh shape.
0, the swirl flow generation device 30 including the fin blades 33 for turning the raw material water flowing in the axial direction into a swirl flow is housed in the ozonizer body 20. The technical means is provided so that the raw material water flowing through the inside is swirled, and by this swirling, the electrolytic generation surface portion 10 is brought into pressure contact with the electrolytic generation surface portion 10 to flow through.

Therefore, in addition to the function of claim 1, the present invention provides:
Since the swirl flow generating means 30 including the fin blades 33 is used, when pressure water such as commercial tap water can be used as raw material water as in the case of claim 3, the swirl flow can be used without using any power source. Exhibits the action of obtaining

[0019]

Embodiments of the present invention will now be described in detail with reference to the accompanying drawings. In the figure, 20 is an ozonizer main body which constitutes a casing part of the invention electrolysis type ozone water production apparatus. The ozonizer body 20 has a circular cross section. That is, the ozonizer body 20 has a substantially disc-like shape in the embodiments of FIGS. 1 to 3, and a circular pipe shape in the embodiment of FIG.

An anode electrode in which a part or all of the peripheral surface of the ozonizer body 20 is made of metal such as platinum having an ozone generating catalytic function on the inner surface of the ion exchange membrane 11 and has a wire mesh shape or other porous surface shape. 12 are stacked, and the outer surface of the ion exchange membrane 11 is an electrolytic generation surface portion 10 in which a cathode electrode 13 made of a corrosion resistant metal and having a porous surface shape such as a wire mesh shape is stacked. That is, as shown most clearly in FIG. 3, when the direct current voltage is applied between the electrodes 12 and 13 to bring the anode electrode 12 side into contact with the raw material water, the electrolytic generation surface portion 10 is electrolyzed. It is the same as the electrolysis section of the conventional electrolytic ozone water production apparatus.

As the ion exchange membrane 11, a Nafion (registered trademark) membrane or the like can be used.
1 is a solid but electrolyte, and an anode electrode 12 for electrolysis
It is a known technique that the cathode electrode 13 and the cathode electrode 13 are overlapped on both sides of the ion exchange membrane 11 so that the distance between them can be reduced and violent electrolysis can be performed at a low voltage. In addition, the anode electrode 12 and the cathode electrode 13
Means that electrolysis is most likely to occur at the interface between the portion that is in contact with the ion exchange membrane 11 and the portion that is not in contact therewith, so that it is a wire mesh or a porous surface such as a plate provided with a large number of through holes or slits. It is also known in the art that it is desirable to use

Further, the above-mentioned anode electrode 12 and cathode electrode 13
Means that the material may be a corrosion resistant metal, but platinum,
It is empirically known that the use of gold, silver or the like enhances the ozone generation efficiency due to the catalytic function. It should be noted that the titanium net plated with platinum has excellent corrosion resistance and high ozone generation efficiency, and even if it is used for a long period of time, platinum does not melt and it can be handled practically like platinum. there were.

Further, the ozonizer main body 20 is provided with a raw material water inflow port 21 and an ozone water outflow port 22, and the raw material water in the ozonizer main body 20 swirls to swirl to the electrolysis generating surface portion 10. Is provided with a swirling flow generating device 30 which is pressed against the centrifugal force to flow. That is, the reason why the ozonizer main body 20 has a circular cross section is that the raw water is swirled in the ozonizer main body 20, so that the swirl flow generator 30 swirls the raw water along its inner peripheral surface. I am doing it.

The swirl flow generator 30 is conventionally
Various types are known, and in the embodiment shown in FIGS. 1 and 2, a so-called centrifugal pump is applied, and a circular central axis of a disk-shaped ozonizer main body 20 (a container having a predetermined thickness) is used. A raw water inlet 21 is provided on the top, and a ozone tangential outlet 22 is provided in a circular tangential direction. Further, the raw water is sucked into the ozonizer main body 20 from the inlet 21 and pumped out from the ozone water outlet 22. A swirl flow generating device 30 including a rotary blade 31 and a drive source 32 thereof is provided substantially concentrically with the circular portion of the ozonizer body 20. This rotor 3
Various shapes (a flat plate or a curved plate as shown in the figure) are prepared for 1 but it is composed of a plurality of radial rotary blades 31, 31, 31 ... ，
.. are rotated (rotated in the direction of arrow P1 in FIG. 1) to be supplied from the inflow port 21 (supplied from the front side to the rear side in FIG. 1, but positively pumped). There is no need, the raw material water is the inlet 21 and the ozonizer body 2
It suffices if it is satisfied within 0. ) The raw material water is sequentially sent out in the centrifugal direction as shown by arrows P1, P1, P1 ... In FIG. 1, and eventually shown by arrows P2, P2, P2 ... along the inner peripheral surface of the ozonizer body 20. And the arrow P3 from the ozone water outlet 22 in the tangential direction.
It is designed to be ejected (exhaled) as shown in.

In the swirling flow generator 30 of FIG. 3, the raw water flow pressure inlet 21a is provided in a circular tangential direction, and the ozone water flow outlet 22 is provided at an appropriate position. The raw water flow pressure inlet 21a is fed into the ozonizer body 20 by pressure. The raw material water is swirled in the ozonizer body 20 and is brought into pressure contact with the electrolysis generating surface portion 10 by centrifugal force so as to flow. That is, in the present embodiment, in particular, the swirling flow is generated at the raw water flow pressure inlet 21a provided in the tangential direction without providing the swirling flow generating device 30.

The example of FIG. 3 described above is suitable when pressure water such as commercial tap water is previously obtained as raw material water, and a plurality of ozone water outlets 22 may be provided. And FIG.
In order to avoid disturbing the swirling flow, the ozone water outlet 22 is arranged opposite to the raw water flow pressure inlet 21a in the tangential direction, but the ozone water outlet 22 does not necessarily have to be oriented in the tangential direction. Instead, it may be provided at an appropriate position of the ozonizer main body 20 (for example, so as to face the back direction in FIG. 3). In addition, in FIG. 3, reference numeral 23 is for facilitating reliable swirl flow in the rectifying body.

In the example of FIG. 4, the ozonizer body 20 has a circular cross section, and has a cylindrical shape in which the raw material water flows from one end to the other end (from the upper end side to the lower end side in FIG. 4).
Swirl flow generator 30 housed in the ozonizer body 20
Is composed of a fin blade 33 that makes the raw material water flowing in the axial direction into a swirling flow. This finelli wing body 33 is used to give a twist to a fluid flowing in a straight direction in a conventional cylindrical flow path to swirl it, and is mainly used for the purpose of mixing fluids. What is called a static mixer may be used. Good. Then, the fluid (raw material water) becomes a swirl flow by passing through this portion of the fin blade body 33, and in the illustrated example, when the raw water flowing downward passes through the portion of the fin blade body 33, the fluid flows from the lower portion. Is a swirling flow.

In the present invention, the raw material water can be fed to the raw material water inlet 21 or the raw material water pressure inlet 21a, and a DC voltage is applied to the anode electrode 12 and the cathode electrode 13. Then, the raw material water is electrolyzed on the side of the anode electrode 12, oxygen and ozone are generated, and the generated ozone is more easily dissolved in water than oxygen, so that the raw material water is dissolved in the raw material water to become ozone water. Even if the outer surface side (cathode electrode 13 side) of the electrolysis generating surface portion 10 is left exposed to the atmosphere as it is, when a DC voltage is applied to the anode electrode 12 and the cathode electrode 13, part of the raw material water is ion-exchanged. Since it passes through the membrane 11 and moves to the cathode electrode side to some extent, electrolysis occurs and ozone water can be obtained.

However, if the outer surface side (cathode electrode 13 side) of the electrolysis generating surface portion 10 is also immersed in water of another water system, electrolysis occurs more efficiently. In the example of FIG. The side is covered with a tank 40, and the tank 40 is filled with water and a hydrogen decomposition catalyst 41 is provided at the opening. In addition, when the electrolytic solution is stored in the tank 40, even if hard water such as tap water is used as the raw material water, calcium ions and the like are generated on the surface of the ion exchange membrane 11 by the anode electrode 12 and the cathode electrode 13.
It does not precipitate between the electrode and the electrode, so that the electrode part is not contaminated even after a long time operation (Japanese Patent Application No. 2000-256 previously).
Proposed as 852 etc.). In the ion exchange membrane of the present example (Dupont, USA, trade name: Nafion 450), in the electrolysis, calcium ions and magnesium ions moved from the anode side to the cathode side through the ion exchange membrane 11. . Then, when the calcium ions and the magnesium ions move to the cathode side, the hydrogen that has moved at the same time is gasified and continuously separated from the ion exchange membrane 11 and easily released. It stays and accumulates on the periphery of the ion exchange membrane 11 and the cathode electrode 13, and eventually the deposited layer of calcium or magnesium interferes with the passage of the electric current for electrolysis. As a result, in this type of electrolysis type ozone water producing apparatus, the electric resistance value increased with the progress of electrolysis. In addition, since it is difficult for calcium ions and magnesium ions to be released from the side of the cathode electrode 13 of the ion exchange membrane 11, smooth movement of calcium ions and magnesium ions in the ion exchange membrane 11 is hindered and the ion exchange membrane on the anode side. Calcium ions and magnesium ions were also deposited around the surface of No. 11 and the anode electrode 12.

Therefore, the cathode electrode 13 of the ion exchange membrane 11
From the side, it is convinced that the calcium ion and the magnesium ion can be efficiently released, and the deposition can be prevented by adjusting the smooth transfer condition of the calcium ion and the magnesium ion. I tried circulating the pure water as cleaning water to continue cleaning the cathode side.
Calcium ions and magnesium ions hardly moved in pure water. However, when this washing water (which does not necessarily need to be circulated) is used as an electrolyte such as an aqueous solution of sodium chloride, it has been confirmed that calcium ions and magnesium ions have an effect of efficiently moving into the washing water. It is a thing.

That is, in the usual electrolysis, the raw material water for the electrolyte must be used, but when the ion exchange membrane 11 is used, pure water is used because the ion exchange membrane 11 functions as an electrolyte. Also electrolysis occurs. However, since it is complicated to use pure water as raw material water,
It is convenient if hard water such as easily available commercial tap water can be used, and electrolysis occurs more efficiently than pure water. However, when hard water is used as raw material water by electrolysis using the ion exchange membrane 11, calcium ions and magnesium ions tend to be deposited at the boundary portion between the electrode and the ion exchange membrane. Therefore, when the water of the electrolyte in which sodium chloride or the like is dissolved (the water of the electrolyte in which sodium chloride or the like is dissolved and the conductivity is 300 μS · cm micro Sievert · cm or more) is stored in the tank 40 of the present embodiment, electrolysis is performed. At this time, it is possible to prevent calcium ions and magnesium ions in the raw material water from passing through the ion exchange membrane 11 and sequentially dissolving in the water of the electrolyte in the tank 40 to deposit calcium ions and magnesium ions on the electrode parts. Is.

Next, in the second aspect of the present invention, a part or all of the peripheral surface of the ozonizer body 20 having a circular cross section is made of metal such as platinum having an ozone generating catalytic function on the inner surface of the ion exchange membrane 11 and has a metal mesh shape. The anode electrodes 12 in the form of porous surfaces such as
On the outer surface of the ion exchange membrane 11, an electrolytic generation surface portion 1 is formed by stacking a cathode electrode 13 made of a corrosion-resistant metal and having a porous surface shape such as a wire mesh shape.
0 is the same configuration as in claim 1.

The present invention is based on the ozonizer body 20.
Is provided with a raw water inlet 21 on the central axis of the circle and an ozone water outlet 22 in the tangential direction of the circle. Further, the raw water is sucked from the inlet 21 into the ozonizer main body 20 to generate ozone. A swirl flow generating device 30 including a rotary blade 31 that is pumped and discharged from the water outlet 22 and a drive source 32 thereof is provided, and the raw material water sucked by the rotary blade 31 is supplied to the ozonizer main body 2
It is designed such that it swirls in the inside of 0 and comes into pressure contact with the electrolysis generating surface portion 10 by centrifugal force to flow. That is, the present invention is realized by applying the conventional so-called centrifugal pump to the ozonizer body 20 and the rotary vanes 31.

Explaining a more concrete embodiment of the invention of claim 2, the ozonizer body 20 has an outer diameter of 60 mm,
Use a width of 25 mm, 10c on the outer peripheral surface
The m ² electrolytic generation surface portion 10 was arranged. The electrolysis generating surface portion 10 includes a 55 mesh mesh platinum wire mesh on the anode electrode 12,
A 0.8 mm-thick titanium holding plate that holds the anode electrode and uses a grating plate (not shown) that is curved to match the peripheral surface and has a large number of small holes in a mesh shape with an aperture ratio of 50% or more is used.
As the ion exchange membrane 11, a Nafion (registered trademark) 450 membrane manufactured by DuPont, USA is used, and the cathode electrode 1 is provided on the outside thereof.
As No. 3, a platinum mesh of 80 mesh was used, and the outside thereof was pressed by a grating plate (not shown) having a thickness of 0.6 mm.

Although not shown in FIGS. 1 and 2, the tank 40 shown in FIG. 3 was also used in this embodiment. The tank 40 accommodates electrolyte water in which sodium chloride and citric acid are dissolved (electrolyte water having conductivity of 300 μS · cm microsievert · cm or more). A small sealless AC 100V electric motor is used as the drive source 32 shown in FIG. 2, and the actual number of revolutions is about 1150 rpm in 50 cycles. p. m. When water was sucked from a water tank (not shown), the water flowed out of the ozone water outlet 22 with a capacity of about 20 liters per minute. In this state, both electrodes 12,
When a DC power supply was applied between 13 and 1 at a voltage of 9V
The current of A flowed, and the ozone concentration at the ozone water outlet 22 was about 1.8 ppm. When the tank 40 is not used, the ozone concentration only drops by a few percent at the beginning of the operation, but the ozone generation efficiency is extremely reduced to a half level in continuous operation for several tens of hours.

Ozone water of 1.8 ppm at 20 liters per minute is just the optimum and sufficient capacity for use for cleaning and sterilizing foodstuffs and floors. For comparison, about 20 liters / min. When a commercially available electrolytic ozonizer (plate type) having an output of 0.5 ppm was used, a current of about 15 A was required at a voltage of about 14V. Therefore, the present invention has high efficiency and low power consumption that power consumption is about half that of the conventional device, and it is convinced that flowing the centrifugal water flow in pressure contact with the electrodes contributes to high efficiency. It was

Next, in the third aspect of the present invention, a part or all of the peripheral surface of the ozonizer main body 20 having a circular cross section is formed on the inner surface of the ion exchange membrane 11 by a metal wire mesh made of metal such as platinum having an ozone generating catalytic function. The anode electrodes 12 in the form of porous surfaces such as
On the outer surface of the ion exchange membrane 11, an electrolytic generation surface portion 1 is formed by stacking a cathode electrode 13 made of a corrosion-resistant metal and having a porous surface shape such as a wire mesh shape.
0 is the same configuration as in claim 1.

The present invention is based on the ozonizer body 20.
Is provided with a raw water flow pressure inlet 21a in a circular tangential direction, and an ozone water flow outlet 22 is provided at a proper position.
The raw material water pumped into the ozonizer main body 20 is swirled in the ozonizer main body 20 and is pressed against the electrolysis generating surface portion 10 by centrifugal force to flow therethrough. That is, according to the present invention, a swirling flow is generated by supplying the pressure water tangentially.

A more specific embodiment of the present invention will be described. The ozonizer body 20 has a diameter of 60 mm and a thickness of 10 mm.
3 shown in FIG. 3 was used, and the electrolysis generating surface part 10 had the same structure as that of claim 2 and had a size of 5 cm ² . And tap water is supplied from the raw water flow pressure inlet 21a at 4 minutes per minute.
A liter was flown in and a DC voltage was applied between both electrodes. When the voltage was set to 6 V, a current of about 1.2 A flowed, and the ozone concentration at the ozone water outlet 22 outlet was about 1.2 ppm. For comparison, an ordinary flat plate type was trial-manufactured with the same electrode structure and operated, and it was proved that it was very difficult to reduce the electrode area because the current flowed only 0.5 A. When the applied voltage was increased so that a current of 1.2 A, which is the same as that of the embodiment of the present invention, flows in the prototype, a current of 1.2 A flows at about 11.5V.
However, the ozone concentration at this time was 0.3 ppm, which was only about 1/4 that of the present invention.

Next, according to the invention of claim 4, a part or all of the peripheral surface of the cylindrical ozonizer main body 20 having a circular cross-section so that the raw material water flows from one end to the other end is ion-exchange membrane. On the inner surface of 11, an anode electrode 12 made of metal such as platinum having a function of generating ozone and having a porous surface shape such as a wire mesh shape is superposed.
On the outer surface of the ion exchange membrane 11, an electrolytic generation surface portion 1 is formed by stacking a cathode electrode 13 made of a corrosion-resistant metal and having a porous surface shape such as a wire mesh shape.
0 is the same configuration as in claim 1.

The present invention is based on the ozonizer body 20.
A swirl flow generation device 30 including a fin blade 33 that makes the raw water flowing in the axial direction into a swirl flow is housed in the inside, and the raw water flowing in the ozonizer body 20 is stored in the fin blade 33. It is configured to swirl, and by this swirling, the electrolytic generation surface portion 10 is pressed against the electrolytic generation surface portion 10 by a centrifugal force to flow. That is, in the present invention, the raw material water flowing through the cylindrical flow path is made into a swirling flow by a static mixer.

As a further specific example of the present invention, a ceramic pipe having an inner diameter of 11 mm is used for the ozonizer body 20, and the finelli wing body 33 has an outer diameter of about 10 mm and a length of about 25 mm.
In the above, one piece was used that caused water to rotate about 360 ° to cause a turning motion. Then, the above-mentioned finelli wing body 33 is mounted inside the ozonizer main body 20, and 5 m is attached to the outlet side of the hineri wing body 33.
The electrolytic generation surface portion 10 was provided on the peripheral surface portion of the ozonizer body 20 with a space of m. The electrolysis generating surface portion 10 having the same structure as described above and having a size of about 3 cm ² was used. And
Tap water 4 liters per minute from the top, both electrodes 12,1
When a 6V DC power supply was applied between the three, the current was about 0.8.
It was A. This current is smaller than that in the specific embodiment of claim 2, but it is considered that the reason is that the centrifugal force of the swirling flow is small, and the ozone concentration at the outlet is 0.
It was 7 ppm.

The ozone concentration of 0.7 ppm of ozone water is sufficient to sterilize Escherichia coli and Gram-negative bacteria in a short time. By the way, in an ozone water producing apparatus using an air-based discharge type ozonizer, 0.5 to 0.6 ppm of ozone water can be produced under a low water temperature of 10 ° C. or less, but in the present invention, a high voltage for discharge is used. Without this, about 0.7 ppm of ozone water can be obtained at room temperature (about 15 to 25 ° C.), the power source can be 6 V · 1 A or less, and it can be realized with a simple configuration that can be directly connected to the tap of the water supply.

[0044]

As described above, the present invention can provide a very simple and compact ozone water producing apparatus. In particular, an ozone water production apparatus having a small electrode area for compactness has been extremely difficult to put into practical use due to an extremely low ozone concentration. However, in the present invention, the swirl flow is used to impede practical use. It is possible to provide an electrolytic ozone water producing apparatus that can realize a non-existent ozone concentration as shown in the specific examples.

According to the invention of claim 2, the rotary blade 3
The speed of the swirling flow or the centrifugal force of the raw material water can be adjusted by changing the rotation speed of No. 1 and by changing the supply pressure of the raw material water in the invention of claim 3, and the pressure and flow velocity of the appropriate raw material water can be adjusted. It is possible to provide an electrolytic ozone water producing apparatus capable of obtaining

In the invention of claim 4 as well, the swirling flow speed or the centrifugal force of the raw material water can be adjusted by changing the supply pressure of the raw material water. However, this fin blade 33 is surprisingly large in pressure loss and simple. It is not practical to adjust the ozone generation efficiency by changing the feed pressure of the raw material water, but as described above, the configuration is extremely simple and has sufficient practical efficiency compared with the flat plate type. The use range is wide, and it is possible to provide an electrolytic ozone water production apparatus which is considered to have a great utility value.

[Brief description of drawings]

FIG. 1 is a front view showing an embodiment of an electrolytic ozone water producing apparatus of the present invention.

FIG. 2 is a left side view.

FIG. 3 is a vertical sectional view of another embodiment.

FIG. 4 is a vertical sectional view of still another embodiment.

[Explanation of symbols]

10 Electrolytic generation surface 11 Ion exchange membrane 12 Anode electrode 13 Cathode electrode 20 Ozonizer body 21 Inlet 21a Raw water flow pressure inlet 22 Ozone water outlet 30 Swirling flow generator 31 rotor 32 drive source 33 Hinelli Wing

─────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP 2001-198574 (JP, A) JP 2000-169989 (JP, A) JP 10-230264 (JP, A) JP 11-300360 ( JP, A) JP 2000-42565 (JP, A) JP 2000-201645 (JP, A) (58) Fields investigated (Int.Cl. ⁷ , DB name) C02F 1/46 B01F 1/00 B01F 5 / 00 C01B 13/10 C02F 1/78

Claims (4)

(57) [Claims] 1. A porous surface, such as a wire mesh, made of a metal such as platinum having an ozone generating catalytic function on the inner surface of the ion exchange membrane (11) on a part or all of the peripheral surface of the ozonizer body (20) having a circular cross section. (1) in the form of a corrugated anode (12), and the outer surface of the ion exchange membrane (11) is covered with a cathode electrode (13) made of a corrosion-resistant metal and having a porous surface such as a wire mesh.
0), the raw water inlet (2) is provided in the ozonizer body (20).
1) and an ozone water outlet (22) are provided, the raw material water in the ozonizer body (20) swirls, and the swirling raw material water is brought into pressure contact with the electrolytic generation surface portion (10) by centrifugal force to flow. An electrolytic ozone water producing apparatus provided with a swirling flow generator (30) adapted to do so. 2. A perforated metal mesh-like porous surface such as platinum having an ozone generating catalytic function on the inner surface of the ion exchange membrane (11) on a part or all of the peripheral surface of the ozonizer body (20) having a circular cross section. (1) in the form of a corrugated anode (12), and the outer surface of the ion exchange membrane (11) is covered with a cathode electrode (13) made of a corrosion-resistant metal and having a porous surface such as a wire mesh.
0), the ozonizer body (20) is provided with a raw water inlet (21) on a circular central axis and an ozone water outlet (22) in a tangential direction of the circle, and further, the ozonizer body (20) is provided. Two
0) A swirl flow generator (30) including a rotor (31) for sucking raw material water from the inlet (21) and pumping and discharging it from an ozone water outlet (22) and a drive source (32) thereof.
Is provided, and the raw material water sucked by the rotary vane (31) is swirled in the ozonizer body (20) and is pressed against the electrolysis generating surface portion (10) by centrifugal force to flow therethrough. Ozone water production equipment. 3. A perforated metal mesh-like porous surface such as platinum having an ozone generating catalytic function on the inner surface of the ion exchange membrane (11) on part or all of the peripheral surface of the ozonizer body (20) having a circular cross section. (1) in the form of a corrugated anode (12), and the outer surface of the ion exchange membrane (11) is covered with a cathode electrode (13) made of a corrosion-resistant metal and having a porous surface such as a wire mesh.
0), the raw water flow pressure inlet (21a) is provided in the circular tangential direction in the ozonizer body (20) at an appropriate position, and the ozone water outlet (2) is provided.
2) is provided, and the raw material water pressure-fed into the ozonizer body (20) from the raw water flow pressure inlet (21a) swirls in the ozonizer body (20) and the electrolysis generating surface portion (10).
An electrolytic ozone water production device that is designed to flow under pressure by centrifugal force. 4. A part or all of the peripheral surface of a cylindrical ozonizer body (20) having a circular cross section and allowing water to flow from one end to the other end is provided on the inner surface of the ion exchange membrane (11). An anode electrode (12) made of a metal such as platinum having a catalyst function for ozone generation and having a metal wire mesh-like porous surface is superposed, and the outer surface of the ion exchange membrane (11) is made of a corrosion-resistant metal and has a metal wire mesh-like pore. Electrolytic generation surface part (1) on which planar cathode electrodes (13) are stacked
0), the swirl flow generator (30) including a swirl vane body (33) for swirling the raw material water flowing in the axial direction is housed in the ozonizer body (20). Body (33)
The raw material water flowing through the ozonizer body (20) is swirled, and the swirling causes the electrolytic water to flow by being pressed against the electrolysis generating surface portion (10) by centrifugal force. apparatus.