JP2013212485A - Ozone water generating apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an ozone water generating apparatus having high ozone dissolving efficiency with a simple structure, and reducing an amount of ozone discharged to the atmosphere.SOLUTION: An ozone water generating apparatus is composed of a sealed ozone generating container 1 that generates and contains ozone, and an ozone dissolving/separating device 2 that dissolves ozone into tap water by sucking ozone by tap water pressure. An S-shaped trap is provided in the ozone dissolving/separating device to provide water seal, and ozone gas not dissolved into water in the ozone dissolving/separating device is gathered to one place and is discharged from an ozone gas discharging hole 58. Furthermore, in order to increase the ozone dissolving efficiency and suck ozone gas from the ozone gas generating container, a nozzle plate that forms tap water flow into a gas/liquid mixed flow comprising minute water droplets in the ozone dissolving/separating device is provided, and the gas/liquid mixed flow is made to pass through a wire mesh to generate negative pressure in the ozone dissolving/separating device.

Description

  The present invention relates to an apparatus for connecting to a water pipe and generating ozone water using tap water pressure, and disinfecting and disinfecting foods and fingers with the generated ozone water.

The device that generates ozone water by connecting to a water pipe includes a method of generating ozone gas from oxygen in the air by a discharge type or ultraviolet type ozone generator, dissolving the generated ozone gas in water, and water. There is a method of generating ozone water by electrolysis.
In this method, ozone gas is generated and dissolved in water, generally using an ejector, an aspirator, etc., and mixing with running water while sucking ozone gas, generating fine ozone bubbles and dissolving in water. A method is employed (see, for example, Patent Document 5 and Patent Document 6).
However, because this method creates a high-speed water flow and inhales ozone gas, the ozone gas has a short contact time with water and the contact area is small, so the amount of ozone gas that dissolves in water is small and most ozone gas is in the atmosphere. There is a drawback of being released.

For this reason, in order to produce practical ozone water with high ozone water concentration, after mixing ozone gas with high concentration and water, the ozone gas that was not dissolved by the gas-liquid separator is separated and recirculated and dissolved ( For example, see Patent Document 1.)
A method of increasing the amount of ozone gas taken in by installing a bubble liquid flow generation spray nozzle (for example, see Patent Document 2) in the liquid and supplying tap water to the spray nozzle (for example, see Patent Document 3).
There has been proposed a method for generating ozone water by supplying finely supplied water and bringing ozone gas into contact with the finely divided water in the dissolution tank (see, for example, Patent Document 4), but the effect of dissolving ozone is sufficient. That's not true.

Japanese Patent No. 3381705 Japanese Patent No. 4133021 Japanese Patent No. 4156435 Japanese Patent No. 3391560 JP 2009-226323 A Republished 2008-042662

As described above, in the conventional ejector-type ozone water generating device that generates ozone water by sucking ozone gas and dissolving it in tap water only by tap water pressure, the amount of ozone gas sucked is small, and ozone gas and water Since the contact area and the contact time are short, the ozone dissolution efficiency is poor and only low-concentration ozone water can be produced, resulting in inferior bactericidal action.
If you try to produce ozone water with a sterilizing concentration and increase the concentration of the ozone gas to be supplied, the ozone gas in the form of bubbles that did not dissolve in the water will be released into the atmosphere when the ozone water is discharged. There was a hygiene problem.

  The present invention is intended to solve such a problem, and an object of the present invention is to realize an ozone water generator that improves the efficiency of ozone gas dissolution in the ozone dissolution chamber and eliminates the release of ozone gas to the atmosphere. It is what.

  In order to achieve the above object, the present invention generates ozone from oxygen in the air inside an airtight container containing an ozone lamp and attached with an air inflow valve. An ozone gas generation container, a water supply apparatus that supplies tap water supplied from the outside to the ozone dissolution separator, and ozonized air is sucked from the ozone gas generation container. It is possible to safely produce high-concentration ozone water by comprising an ozone gas dissolution separator configured to dissolve a part of ozonized air in the tap water and to separate and recover excess ozonated air from ozone water. Each of these components will be described below.

First, the ozone gas generation container is an airtight container equipped with an air inflow valve that prevents air from flowing in from outside but does not flow out ozonized air from the container. Ozone is generated by lighting.
An ozonized air supply hole is drilled in the base of the ozone gas generation container, and an ozonized air supply pipe is connected to it.
The ozonated air generated by the ozone lamp is sent to the ozone gas dissolving separator through the ozonized air supply pipe due to the negative pressure generated inside the ozone gas dissolving separator, and the ozonized air that has not been dissolved by the ozone gas dissolving separator Is discharged from the ozonated air discharge hole and properly processed.
The volume of the gas reduced by this action flows from the outside through the air inflow valve, and new air flows into the ozone gas generation container.

  The water supply is a device that keeps the inflow of tap water constant so that the water level of ozone water collected in the gas-liquid separation chamber provided inside the ozone gas dissolution separator does not rise too much. A pressure reducing valve is used.

  The ozone gas dissolution separator has a water supply hole on the upper surface, an ozone water discharge hole on the lower surface, and a cylindrical ozone dissolution chamber in the middle of the flow path from the water supply hole to the ozone water discharge hole. A gas-liquid separation chamber having a large space and an S-shaped flow path (referred to as an S-shaped trap) are formed from the gas-liquid separation chamber, and an ozonized air suction hole is provided in the ozone dissolution chamber. An ozonized air discharge hole is formed in the upper part of the chamber, a nozzle plate, and a wire mesh. The nozzle plate is attached to the upper part of the ozone dissolution chamber, and the wire mesh is attached to the lower part.

The action of the ozone gas dissolving / separating device is to suck the ozonated air stored in the ozone gas generating container with the tap water supplied from the water supply device, dissolve the ozonized air in the tap water, and generate ozone water. Excess ozonized air that did not dissolve in water is separated from the ozone water, collected in one place so that it can be properly treated, and discharged from the ozone dissolution separator.
A nozzle plate, a wire mesh, and a gas-liquid separation chamber are provided as means for achieving these things. Next, these actions will be described.

A plurality of frustoconical holes are perforated in the nozzle plate. The water flow discharged from these holes is a fan-shaped water flow that collides with the water flow discharged from other flow paths and dissolves ozone. It becomes a fine water droplet flow in the room, and it flows toward the wire net installed below as a gas-liquid mixed flow involving ozonized air.
The amount of gas dissolved in the liquid is proportional to the gas-liquid contact area, contact time, gas pressure, etc., so the surface area of fine water particles is larger than that of large water particles, and the total surface area becomes larger, and it is ozonized. Since the contact area between air and water increases, the amount of ozonized air dissolved in water increases and ozone water with a higher concentration is generated.

Next, when the gas-liquid mixed flow passes through the lattice holes formed in the wire mesh, which explains the operation of the wire mesh, the water droplet flow generates bubbles entrained with ozonized air and flows out of the wire mesh.
The phenomenon of generating bubbles is the same as that of a commercially available foam plug (for example, JP-A-8-309234), and the space in the ozone dissolution chamber between the nozzle plate and the wire mesh becomes negative pressure. The amount of ozonated air corresponding to the volume of the gas flowing out is sucked into the ozone gas dissolving / separating device through the ozonized air supply pipe from the ozone gas generation container.

Since the S-shaped S-shaped trap is formed in the flow path from the gas-liquid separation chamber to the ozone water discharge port, which explains the operation of the gas-liquid separation chamber, water is stored at a constant water level and ozonized. Water is sealed so that air does not flow out from the ozone water discharge port.
When a gas-liquid mixed flow containing bubbles that have passed through a wire mesh is discharged onto the surface of the ozone water stored in the gas-liquid separation chamber, the bubbles are destroyed and separated into a liquid and a gas. It is discharged to the outside of the ozone gas dissolution separator from the chemical air discharge hole.
On the other hand, the separated liquid accumulates in the lower part of the gas-liquid separation chamber and raises the water level. When the water level rises, it flows out from the ozone water outlet through the S-shaped trap.

  As described above, the ozone water generation apparatus of the present invention can provide an ozone water generation apparatus that can generate ozone water of high concentration with a simple structure and can eliminate the release of ozone gas into the atmosphere. .

The block diagram which shows the structure of the ozone water generating apparatus which concerns on one Example of this invention. The block diagram for demonstrating the detoxification of the exhaust ozone gas which concerns on the ozone water generating apparatus of this invention. The block diagram for demonstrating the collection | recovery and reuse of ozone which concerns on the ozone water production | generation apparatus of this invention. Sectional drawing which shows the structure of the ozone gas production | generation container of this invention Sectional drawing which shows the structure of the ozone gas dissolution separator of this invention Sectional drawing which shows the other Example of the case of the ozone gas melt | dissolution separator of this invention Sectional drawing which shows the Example of the nozzle plate of the ozone gas melt | dissolution separator of this invention Sectional drawing which shows the other Example of the nozzle plate of this invention

  Hereinafter, embodiments of the present invention will be described with reference to FIGS.

In FIG. 1, tap water is supplied from the upper part of the ozone gas dissolution separator 2 after having a constant flow rate through a water supply 6.
Reference numeral 1 denotes an ozone gas generation container that generates ozone from oxygen contained in the air and stores it in a container. Reference numeral 2 denotes an ozone dissolution separator that dissolves ozonated air in water and did not dissolve it. Separate excess ozonated air and ozone water.
The ozonized air is supplied from the ozone gas generation container 1 through the ozonized air supply pipe 3, excess ozonated air that has not been dissolved is discharged from the ozonized air discharge hole 58, and the generated ozone water is ozone water. It is discharged from the discharge port 53.

In FIG. 2, the ozonized air recovery pipe 4 is connected to the ozonized air discharge hole 58 so that the discharged excess ozonized air is rendered harmless by the ozone decomposer 5 and then released into the atmosphere.
FIG. 3 shows that the excess ozonized air discharged from the ozone gas dissolving separator 2 is returned to the ozone gas generating container 1 through the ozone gas recovery pipe 4, and the ozonized air generated in the ozone gas generating container 1 is converted into the ozone gas dissolving separator 2. Cycled between.
By doing so, high-concentration ozone water can be safely generated without releasing ozone gas to the outside of the apparatus.

FIG. 4 is a diagram showing the structure of the ozone gas generation container 1. In FIG. 4, the cover 41 and the base 42 have an airtight structure, and an ozone lamp 43 is arranged inside.
The base 42 has an ozonized air supply hole 44 connected to the ozone gas supply pipe 3 and an ozonized air recovery hole 45 connected to the ozonized air recovery pipe 4 in order to properly process the ozonized air. An air inflow valve 46 is installed to prevent outside air from flowing in but outflowing gas from the container.
The ozone lamp 43 is attached to the base 42 via a socket 47 so that it can be replaced.
In the case of the embodiment in which ozone is made harmless by the ozonolysis device 5 without collecting ozone in FIG. 2, the ozonation air recovery pipe 45 is connected to the ozonizer 5, so that the ozonization air recovery hole 45 is unnecessary. .

  FIG. 5 is a cross-sectional view showing the structure of the ozone gas deseparator 2. In the figure, the ozone gas dissolution separator 2 is separated from the nozzle plate 51 having a plurality of holes by a few cm below the nozzle plate 51. And the nozzle plate 51 and a case 56 for holding the wire mesh 52.

The case 56 has a water supply hole 54 in the upper part, followed by a dissolution chamber 50 formed by the nozzle plate 51 and the wire mesh 52, and a gas-liquid separation chamber 59 below the dissolution chamber 50. An S-shaped trap 55 having an S-shape is formed from the lower part of the separation chamber 59 and communicates with the ozone water discharge port 53.
Water is stored and sealed between the S-shaped upper surface B and the S-shaped lower surface C of the S-shaped trap.
Since the water level H of the stored ozone water varies depending on the amount of water flowing into the gas-liquid separation chamber 59 and the amount of water flowing out of the ozone water discharge port 53, the water surface H is made constant by the water feeder 6.

Further, the case 56 has an ozonized air suction hole 57 perforated immediately below the nozzle plate 51, and an ozonized air discharge hole 58 perforated above the gas-liquid separation chamber 59.

FIG. 6 shows another embodiment of the case 53 of the ozone gas dissolution separator 2.
The central axis E of the dissolution chamber 50 is not perpendicular to the surface H of the ozone water stored in the gas-liquid separation chamber, but has an inclination of about 80 to 50 degrees. This is separated by the gas-liquid separation chamber 59. This is to prevent the ozonized air from being involved in the gas-liquid mixed flow discharged from the dissolution chamber 50 and from flowing out from the ozone water discharge port 53.
The ozonized air intake hole 57 is drilled from the ozone dissolution chamber 50, and the ozonized air discharge hole 58 is drilled from the gas-liquid separation chamber 59 to the upper surface of the case 56, respectively, for the convenience of design when designing the apparatus. There is no change in the operating principle, and there is no problem if the ozone water discharge port 53 is provided anywhere below the B surface of the S-shaped trap.

  FIG. 7 is a cross-sectional view of the nozzle plate 51, and a plurality of frustoconical holes 71 shown in FIG. 7 are perforated. The water flow discharged from these holes is a water flow spreading downward in a fan shape, It collides with the water flow discharged from other flow paths and generates fine water particles.

FIG. 8 shows another embodiment of the nozzle plate 51. The frustoconical holes 71 are formed so as to intersect with each other toward the central axis E of the ozone dissolution chamber 50 so that the water flows collide with each other. .
71 Cone-shaped hole E Ozone dissolution chamber central axis B S-shaped trap upper surface C S-shaped trap lower surface H Water surface of ozone water stored in gas-liquid separation chamber

The device that generates ozone water by connecting to a water pipe includes a method of generating ozone gas from oxygen in the air by a discharge type or ultraviolet type ozone generator, dissolving the generated ozone gas in water, and water. There is a method of generating ozone water by electrolysis.
In this method, ozone gas is generated and dissolved in water, generally using an ejector, an aspirator, etc., and mixing with running water while sucking ozone gas, generating fine ozone bubbles and dissolving in water. A method is employed (see, for example, Patent Document 5 and Patent Document 6).
The method of sucking ozone with this ejector (Benchery tube) is an application of "Benoului's theorem that the pressure of the fast-flowing part is lower in the steady flow of incompressible and non-viscous fluid". In order to increase the suction amount, it is necessary to increase the flow velocity of the reduced diameter portion, and it is necessary to increase the water pressure.
In addition, since multiple orifices cannot be installed in one flow path, the only way to increase the flow rate is to use a large number of ejectors or increase the water pressure.
Furthermore, since this method creates a high-speed water stream and inhales ozone gas, the time for ozone gas to contact with water is short and the contact area is small, so the amount of ozone gas that dissolves in water is small and most ozone gas is in the atmosphere. There is a drawback of being released.

Next, when the gas-liquid mixed flow passes through the lattice holes formed in the wire mesh, which explains the operation of the wire mesh, the water droplet flow generates bubbles entrained with ozonized air and flows out of the wire mesh.
The phenomenon of generating bubbles is the same as that of a commercially available foam plug (for example, JP-A-8-309234), and the space in the ozone dissolution chamber between the nozzle plate and the wire mesh becomes negative pressure. The amount of ozonated air corresponding to the volume of the gas flowing out is sucked into the ozone gas dissolving / separating device through the ozonized air supply pipe from the ozone gas generation container.
The difference between the ozonized air suction action and the suction action by the ejector will be described in detail.
In the present invention, the flowing water that has passed through the orifice collides with the wire mesh to form a water curtain on the lattice surface of the wire mesh, and when the water curtain moves to the gas-liquid separation chamber, the size is proportional to the opening area of the wire mesh lattice. Bubbles are generated, and part of the gas in the dissolution chamber becomes bubbles and is discharged from the dissolution chamber.
That is, if the area s of the orifice hole s, the velocity v of the water passing through the orifice, and the volume m of the fluid passing per unit time, m = sv.
When the area S of the openings of the mesh of the wire mesh, the velocity V of the bubbles passing through the wire mesh, and the volume M of the fluid passing per unit time, M = SV.
Mm = SV-sv is the volume of the sucked gas. Therefore, set the water pressure of the tap water, the hole diameter of the orifice, and the area of the opening of the wire mesh so that SV-sv becomes positive.

Claims (5)

A nozzle plate and a wire mesh are held in which a water supply hole is formed on the upper surface, an ozone water discharge hole is formed on the lower surface, and a plurality of frustoconical holes are formed in the middle of the flow path from the water supply hole to the ozone water discharge hole. There is a large gas-liquid separation chamber below the dissolution chamber, and an S-shaped channel is connected from the bottom of the gas-liquid separation chamber to the ozone water discharge hole. A case in which an ozonized air suction hole is formed in the side wall of the dissolution chamber and an ozonization air discharge hole is formed in the upper portion of the gas-liquid separation chamber, and the nozzle plate and the nozzle held in the dissolution chamber An ozone gas dissolution separator composed of the wire mesh held in the dissolution chamber below the plate;
An ozone gas generation container that contains ozone generated by containing an ozone generator that generates ozone from oxygen in the air;
A water supply device for supplying pressurized water supplied from the outside to the ozone gas dissolution separator at a constant flow rate, and ozonized air connected so that ozone gas flows from the ozone gas generation container toward the ozone gas dissolution separator Ozone water generator characterized by comprising a supply pipe   2. The ozone water generator according to claim 1, wherein the nozzle plate is perforated so that the liquid flows discharged from the nozzle plate collide with each other on the central axis of the dissolution chamber.   2. The ozone water generator according to claim 1, further comprising an ozonized air recovery pipe connected so that ozone gas flows from the ozone gas dissolution separator toward the ozone gas generation container.   The ozone water generator according to claim 1, further comprising an ozonized air recovery pipe provided with an ozonizer and connected so that ozonized air flows from the ozone gas dissolution separator toward the ozonizer. .   The ozone gas generation container has a base to which an ozone lamp is attached and an ozonized air supply hole and an ozonized air recovery hole are perforated, and a cover that is detachable from the base but covers the whole so as to maintain airtightness. The ozone water generator according to claim 3, further comprising an air inflow valve that allows outside air to be inhaled but prevents internal gas from flowing out.

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